design
Unit 1.
Die alignment unit is also known as the fitting and guiding device of die blade.For the purpose of maintaining the alignment of the upper and lower die and shortening the preparation time, according to the requirements of product precision and production quantity and other conditions, there are five main types of mold alignment units:
(1) there is no guide type: when the mold is installed in the punch press, it will directly perform the matching operation of the blade part, without using the guiding device.
(2). External guidance type: this device is the most standard structure. The guidance device is installed in the upper mold base and the lower die block.
(3). External guidance and internal guidance and use (1): this device is the most commonly used structure for continuous molds, and the internal guidance device is installed between the punch plate and the pressing plate.Use of fixed pin and external guide for punch and die.The other function of the inner guidance device is to prevent the pressure plate slanting and protect the small punch.
(4). External guidance and internal guidance and use (2): this device is the use structure of high precision high speed continuous mold, and the internal guidance device runs through the punch plate, pressboard and die plate, etc.The inner guidance device itself also has the mold blade to the joint and protect the small punch.The main function of the external guide is to disassemble the mould and install it in the punching machine.
(5). The guiding type: this structure does not use outside guidance device, inner guidance device through the punch fixed plate fixed plate, pressure plate and concave die, and so on, properly keep the position of each board to protect the punch.
2. Guide column and guide sleeve unit.
There are two types of guide and guide elements of the guide and guide unit of the mould :(A). External guidance type (mold seat type or leading lead), (B). Internal guidance type (or auxiliary guide).With the requirement of precision mould, external guidance and inner guidance are used.
(1). Guidance type: generally used for does not require high precision mould, mostly with mold base form of a unit to sell, main effect is mould mounted at the edge of a punch involution, almost no the dynamic accuracy of stamping processing effect.
(2) internal guidance type: due to the progress of die processing machine, rapid popularization.The main function of the die is to be mounted on the edge of the punching machine, and the dynamic precision of the stamping process is maintained.
(3). External guidance and internal guidance and use: a set of die with external guidance and internal guidance.
3. Punch and die unit (circle)
(1). Punch unit: the round punch unit is convenient for the shape (shoulder type and straight type), length and maintenance, and the punch unit should be used with the pressure plate guide unit.
(2). Die unit: circular die units guide bush also called concave die, its form has the whole block type and separated type, in accordance with the production, and products service life or the place of stampings rationally, die unit combination of series have: (A). Use the template processing die shape directly, (B). Have 2 bevel fled gap, (C). Whether or not to use the back, (D) shape must be turning to prevent irregular concave die design.
4. Press bolt and spring unit.
(1) pressure bolt element :(A). External screw type, (B). Sleeve type, (C). Internal screw type.In order to keep the pressure plate in parallel state at the specified position, the stop method of the press bolt (shoulder contact):(A). The concave of the die socket, (B). The head of the punch holder is fixed, (C).
(2) pressure material spring unit: the movable type pressure material spring unit can be roughly divided into :(A). Single use type, (B).
When selecting the loading spring unit, it is best to consider the following points to decide:
(A) to ensure the free length of the spring and the necessary compressibility (the spring with A large compression capacity shall be placed in the cavity of the pressing plate).
(B) there is no need for the initial spring compression (precompression) or the adjustment of the load.
(C) to consider the tolerance of mold group or maintenance.
(D) consideration of the relationship between punch or pressure bolt length.
(E) consider safety (to prevent the spring from flying out).
5. Guide pin unit (positioning of material strip feeding direction)
(1) guide pin unit: the main function of the guide pin is to get the correct feed pitch during continuous stamping.The stamping die is in two forms: indirect type (guide pin alone) and direct type (guide pin is installed inside the punch).
(2) the assembly mode of the guide pin is the same as the punch punch (installed in the punch holder plate).Use springs to hold it hostage to the punch plate.
(3), guide pin and installed in the form of pressure plate, due to demand guide pin to highlight the amount of pressure plate reaches a certain and easy to take to prevent mold rises by processing materials, pressure plate rigidity and guidance form is necessary to pay attention to.
(4), guide pin unit directly, its installed in the punch, is mainly used for shape cutting processing (cutting) or extended engineering of trimming processing, its positioning system using the products of the hole and extension of inner diameter.
6. Guide unit
(1) in order to make the width of the processed materials be guided and get the correct feeding pitch, the guide element is used to guide the width direction of the processed materials.
Article (2), the width direction of the guide, the guide ways are: (A). The fixed plate guide pin type, (B). Movable guide pin type, (C). The guide plate tunnel type (single board), (D) guided by plate type (two), (E). L type pin guide (with both, fixed type and movable type.
(3) the guiding device of the starting stop is as follows :(1). Sliding block type, (2). Movable pin type and so on, the main function is to locate the material in the initial position of the mold.
(4), stop feeding device, can correctly determine the feed pitch, it is mainly used for hand feeding of occasions, the form is: (A). The fixed stop pin, (B). Stop pin, movable type (C). Stop cutting way, (D). Link to stop institutions, (E). Automatic stop mechanism.
(5) the lateral push material mechanism, the material is pressed to the side during stamping, which can prevent the phenomenon that the material is caused by the difference between the width of the material and the width of the guide.
Positioning guide (6), sheet material, its form is: (A). The fixed pin type feed (using the shape of the embryo), (B). The fixed pin type feed (using the cavity of the embryo), (C). The guide plate (big), (D). The guide plate (A body), (E). The guide plate (division).
7. Lifting material and top material unit.
(1), pin unit: its main function is continuous on stamping process will be expected to die (position height is called feed height, and to achieve smooth feeding, its form has (A). The litres of pin type (circular, pure rise is expected to use), is the most common pin unit.(B). Lifting pin type (round, with guide pin hole), the lifting pin is provided with the guide pin hole to prevent the material from bearing the deformation of the guide pin and make the guide pin do work.(C). Lifting material and guide pin type, with the function of the guide material, the guide material of continuous mould is most commonly used in this form of lifting pin type.(D). The lifting pin type (square) shall be provided with air blow hole if necessary.(E). Lifting and guide pin type (square).
(2) jacking unit: it is necessary to prevent the cutting products or debris from jumping on the die surface to avoid mold damage and the production of bad stamping parts.
(3) ejection unit: the main function of ejection unit is to extrude the product or waste material from the inner surface of the die in each stamping process.The installation site of the ejection unit is 2 :(A), the reverse configuration mold fashion is set in the upper part, (B). The moulding moulds are set in the lower part.
8. Fixed pin unit.
Fixed pin units need designed shape and size according to the standard specifications, when using the matters needing attention are: (A). The fixed pin Kong Yi for through hole, can't, consider easy to use design method of screw unloading.(B). The fixed pin length is the best and must not exceed the necessary length.(C). Fixed pin holes should be necessary to escape from the department.(D) in the case of the upper part, the mechanism should be designed to prevent falling.(E). The fixed pin hole of the sliding side is slightly larger than the fixed pin in the case where one side is pressed to cooperate with the other.(F). The number of fixed pins is based on two principles, and the same size shall be chosen.
9. Pressure plate unit.
The special important point of the pressure plate unit is the correct parallelism and cushioning pressure of the pressing surface and the concave die.
10. Error sending detection unit.
In the case of continuous die stamping, the die must be designed to detect whether the change of the feed pitch exceeds its benchmark and stop the operation of the punch.Error detection unit is installed within the mold and based on the detection method has the following two installed forms: (A). The upper die installed in detection of pin form, when the deviation from expected A cavity, will contact with the article material phase detector.(B). Check out the form of check out in the lower mold, and check if one of the materials is in contact with the check out pin.
11. Waste cutting unit.
There are two kinds of processing methods :(A). Using the winding machine to take it, (B). The cutting device is used to refine it.There are two ways to do this :(A). Use A dedicated scrap cutter (set on the outside of the stamping machine), (B). The unit is installed in the final project of the continuous mold.
12. Height stop block unit.
Highly stop block unit's main role is correctly decision under the upper die dead point position, the form has the following two: (A). The stamping process are also often contact way, (B). Contact assembly, stamping processing when no contact way.Also, when mold handling and storage, in order to prevent the upper and lower mold contact, it is better to put the block between the upper and lower die.When the accuracy requirement is not necessary, the standard can be adjusted by screws.