Stamping trimming die structure and trimming method thereof

Abstract

The invention discloses a stamping and trimming die structure and a trimming method thereof. The stamping and trimming die structure comprises an upper die base and a lower die base, and a trimming tool matched for operation is arranged between the upper die base and the lower die base; the trimming tool comprises a trimming male die arranged on the lower die base, a positioning block is arranged on the upper portion of the trimming male die, a plurality of trimming female dies capable of being buckled with one another are arranged on the peripheral side of the positioning block, and the outer wall of the positioning block is attached to the inner wall of a workpiece to be trimmed so that the workpiece to be trimmed can be positioned and placed on the trimming male die. The pressing plate is arranged on the side, facing the lower die base, of the upper die base and used for pressing the trimming female die to transmit downward pressure needed by stamping during trimming. The trimming tool further comprises a power assembly used for driving the multiple trimming female dies to synchronously get close to or deviate from the positioning block and to ascend and descend. The trimming tool, the wedge guide plate and the material returning spring assembly are integrated, the whole trimming tool is of a movable structure, and the problem that a trimming female die of a conventional product is not provided with a strength structure and cannot be designed can be solved, so that the situation that trimming needs to be achieved through machining can be avoided, and online production of a punching machine can be achieved.

Description

Technical Field

[0001] The invention relates to a stamping and trimming die structure and a trimming method thereof, belonging to the technical field of stamping dies. Background Art

[0002] Stamping dies are specialized equipment used in cold stamping to process materials (metal or non-metal) into parts (or semi-finished products). Stamping is a process in which a die mounted on a press applies pressure to the material at room temperature, causing it to separate or plastically deform, thereby producing the desired part. With increasingly stringent automotive quality standards and the resulting pressure on stamping costs, the cost of stamping products is being pushed higher, not only to ensure quality, but also to meet higher cost requirements.

[0003] When the product trimming cannot be achieved tangent, it is necessary to use a stamping die to trim the product, such as Figure 1 As shown, in the existing stamping die edge trimming process, (refer to Figure 2 ) Generally, the trimming die B is driven by the upper die base A, which contacts the trimming punch F through up and down movement, and at the same time drives the pressure plate D. The pressure plate D presses the product to be trimmed placed on the lower die positioning block E under the action of the spring C, and continues to press the trimming die C down to cut into the trimming punch F to complete the trimming action. The trimming punch F is connected to the lower die base G through bolts and pins, and the spring C plays a role in pressing the material.

[0004] However, when using the traditional punch trimming method, the width of both sides of the product must be greater than about 15MM to ensure the strength of the die, thereby reducing material utilization. In addition, the stamping and trimming molds mentioned above usually require additional machining, which increases the machining cost and cannot realize punch line production. Summary of the Invention

[0005] The purpose of the present invention is to make up for the defects of the existing technology and provide a stamping and trimming die structure and a trimming method thereof. The die has high strength, does not require machining, reduces machining costs, and is more efficient than machining. It can realize the production of punch presses and reduce the overall processing cost of the product. At the same time, it can reduce the amount of trimming that is not necessarily added to the product design and improve material utilization.

[0006] To achieve the above technical objectives and effects, this application is implemented through the following technical solutions:

[0007] In a first aspect, the present invention provides a stamping and trimming die structure, comprising an upper die base and a lower die base disposed opposite to each other, wherein a trimming tooling is disposed between the upper die base and the lower die base for cooperative operation, wherein the upper die base is connected to an external stamping device to move toward or away from the lower die base to drive the trimming tooling to perform stamping and trimming operations;

[0008] The trimming tooling includes a trimming punch, a positioning block, a trimming die and a pressing plate, the trimming punch is arranged on the lower die seat, the positioning block is arranged on the upper part of the trimming punch, the outer wall of the positioning block is in contact with the inner wall of the workpiece to be trimmed so as to position the workpiece to be trimmed on the trimming punch, the trimming die is provided with a plurality of and respectively arranged around the positioning block, the trimming die is a snap-fit structure, the workpiece to be trimmed is placed between the positioning block and the plurality of trimming dies, the part to be trimmed of the workpiece to be trimmed is located between the bottom wall of the trimming die and the top surface of the trimming punch, the pressing plate is arranged on the side of the upper die seat facing the lower die seat to press the trimming die tightly to transmit the downward pressure required for stamping during trimming;

[0009] The trimming tooling also includes a power component for driving multiple trimming dies to synchronously approach or move away from the positioning block and to lift and lower. During the trimming operation, multiple trimming dies approach the positioning block and engage with each other to clamp the workpiece to be trimmed on the positioning block. After clamping, the pressing plate continues to press down to drive the trimming dies down, so that the trimming punch cuts upward into the trimming punch to complete the trimming.

[0010] Preferably, the power assembly includes an inclined wedge driving block, an inclined wedge block, an inclined wedge guide plate and a spring-pressing piece. The inclined wedge driving block, the inclined wedge block and the inclined wedge guide plate are all provided in plurality corresponding to the trimming die. The trimming die is limited to rise and fall by at least one of the spring-pressing pieces and is set on the inclined wedge block. The inclined wedge block is limited to slide on the lower die base by the inclined wedge guide plate to drive the trimming die to approach or move away from the positioning block. The inclined wedge driving block is provided on the upper module and is lifted and lowered with the upper module. The inclined wedge driving block has a driving inclined surface adapted to the inclined surface on the inclined wedge block, and the sliding of the inclined wedge block is driven by the lifting and lowering of the inclined wedge driving block.

[0011] Furthermore, a plurality of inclined wedge backrests are provided on the lower die base corresponding to the trimming die, and the inclined wedge backrests are arranged on the side of the inclined wedge block away from the positioning block. The inclined wedge backrests are provided with a material return spring assembly connected to the corresponding inclined wedge block, and the material return spring assembly is used to pull the trimming die away from the positioning block after the inclined wedge drive block drives the stamping to return.

[0012] Furthermore, the material withdrawal spring assembly includes a material withdrawal bolt and a material withdrawal spring component. The material withdrawal bolt passes through the inclined wedge backer and is screwed to the inclined wedge block. The head of the material withdrawal bolt is located on the side of the inclined wedge backer away from the positioning block. The material withdrawal spring component is sleeved outside the material withdrawal bolt and is located between the head of the material withdrawal bolt and the side wall of the inclined wedge backer.

[0013] Furthermore, a guide groove is provided on the inclined wedge backrest to drive and guide the inclined wedge driving block, and a limiting groove is provided at the bottom end of the inclined wedge driving block to avoid the stripping bolt.

[0014] Furthermore, a lower fixed plate is provided on the lower die base, and the inclined wedge backer, the inclined wedge block and the trimming punch are all embedded in the lower fixed plate.

[0015] Furthermore, the elastic member is a nitrogen spring, and the inclined wedge block is provided with a die guide block plugged into the trimming die to guide the lifting and lowering of the trimming die.

[0016] Furthermore, the oblique wedge block and the oblique wedge guide plate are slidingly connected through a dovetail groove and a dovetail block.

[0017] Preferably, the positioning block and the trimming punch can be detachably arranged on the lower die base.

[0018] In a second aspect, the present invention provides a stamping and trimming method, which uses the above-mentioned stamping and trimming die structure to perform trimming processing on automobile parts products, comprising the following steps:

[0019] Assembling the stamping and trimming die structure, connecting the upper die base to the external stamping equipment slider;

[0020] Taking out the product to be trimmed, and positioning the product to be trimmed on the trimming punch by means of the positioning block;

[0021] The upper die seat is pressed downward, and the plurality of trimming dies are synchronously moved toward the direction close to the positioning block and locked together, and the pressing plate drives the trimming dies to press the product to be trimmed;

[0022] After the upper die seat, the trimming die and the trimming punch are fully in contact, they continue to descend until the upper die seat, the pressure plate, the product profile and the trimming die surface are completely in contact and cut into the trimming punch, completing the trimming action;

[0023] The upper die seat rises along with the slider of the stamping equipment, and the pressing plate separates from the trimming die to complete the part removal.

[0024] The present invention provides a stamping and trimming die structure and a trimming method thereof, which have the following advantages:

[0025] The trimming fixture of the device of the present invention is integrated with the inclined wedge guide plate and the material withdrawal spring assembly. The overall structure is a movable structure, which can solve the problem that the conventional product trimming die has no strength structure and cannot be designed, thus avoiding the need for machining to achieve trimming. Therefore, the present invention solves the problem that the traditional punch trimming must be greater than 15MM in width to ensure the strength of the die. Compared with the traditional solution of machining after stamping, which is unable to trim, the machining cost is reduced and it is more efficient than machining. It can realize the production of punches in a line, reduce the overall processing cost of the product, and at the same time reduce the amount of trimming that is not necessary in product design and improve material utilization. It can be widely used in similar Figure 1 Structural products are usually bushing outer tubes and other products that cannot be trimmed by conventional structures and achieve cost reduction effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the cross-sectional structure of the product to be trimmed;

[0027] Figure 2 It is a schematic diagram of the punching and trimming structure of the prior art;

[0028] Figure 3 An axial schematic diagram of a stamping and trimming die structure provided by an embodiment of the present invention;

[0029] Figure 4 A diagram showing the connection structure between the trimming tool and the lower die base provided in an embodiment of the present invention;

[0030] Figure 5 A structural diagram of a stamping and trimming die structure provided by an embodiment of the present invention in a die opening and parting state;

[0031] Figure 6 A diagram showing a working state of a trimming die pressing a product in a stamping and trimming die structure provided by an embodiment of the present invention;

[0032] Figure 7 A diagram showing a working state of a trimming die cutting into a punch in a stamping and trimming die structure provided by an embodiment of the present invention;

[0033] Figure 8 A schematic diagram of the trimming completion state of a stamping and trimming die structure provided in an embodiment of the present invention.

[0034] In the picture:

[0035] 1-upper die base; 2-lower die base; 3-trimming tooling; 31-trimming punch; 32-positioning block; 33-trimming die; 34-pressing plate; 35-power assembly; 351-angled wedge drive block; 3511-limiting groove; 352-angled wedge block; 353-angled wedge guide plate; 354-spring-pressing member; 4-lower fixed plate; 5-upper fixed plate; 6-die guide block; 7-angled wedge backer; 71-guide groove; 8-ejection spring assembly; 81-ejection bolt; 82-ejection spring member. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technical personnel in this field without making creative efforts are within the scope of protection of this invention.

[0037] Reference Figure 3 and Figure 4A stamping and trimming die structure includes an upper die base 1 and a lower die base 2 arranged opposite to each other, and a trimming tooling 3 for cooperating operation is installed between the upper die base 1 and the lower die base 2. The upper die base 1 is connected to an external stamping equipment to move toward or away from the lower die base 2 to drive the trimming tooling 3 to realize stamping and trimming operations.

[0038] Reference Figure 3-Figure 8 The trimming tooling 3 includes a trimming punch 31, a positioning block 32, a trimming die 33 and a pressing plate 34. A lower fixing plate 4 is welded and fixed to the lower die base 2. The trimming punch 31 is embedded in the lower fixing plate 4 and one end extends out of the lower fixing plate 4. The positioning block 32 is installed on the upper surface of the trimming punch 31, and the projection area of the positioning block 32 on the trimming punch 31 is smaller than the upper surface area of the trimming punch 31 to form a stepped structure. The positioning block 32 and the trimming punch 31 are simultaneously detachably fixed to the lower die base 2 by a bolt pin, and the corresponding trimming punch 31 can be replaced according to different products to be trimmed, thereby improving the adaptability and practicality of the trimming tooling 3.

[0039] The outer wall of the positioning block 32 fits with the inner wall of the workpiece to be trimmed so as to position the workpiece to be trimmed on the trimming punch 31. Multiple trimming dies 33 are installed and arranged around the positioning block 32. The trimming dies 33 are a snap-fit structure. The workpiece to be trimmed is placed between the positioning block 32 and the multiple trimming dies 33. The part to be trimmed of the workpiece to be trimmed is located between the bottom wall of the trimming die 33 and the top surface of the trimming punch 31; an upper fixed plate 5 is welded and fixed to the side of the upper die base 1 facing the lower die base 2, and a pressing plate 34 is welded or screwed on the upper fixed plate 5 and has an avoidance groove for avoiding the workpiece to be trimmed. The pressing plate 34 is used to press the trimming die 33 to transmit the downward pressure required for stamping during trimming.

[0040] Reference Figure 3-Figure 8 The trimming tooling 3 also includes a power assembly 35 for driving multiple trimming dies 33 to synchronously approach or move away from the positioning block 32 and to lift and lower. During the trimming operation, multiple trimming dies 33 approach the positioning block 32 and engage with each other to clamp the workpiece to be trimmed on the positioning block 32. After clamping, the pressing plate 34 continues to press down to drive the trimming dies 33 to descend, so that the trimming punch 31 cuts upward into the trimming punch 31 to complete the trimming, and the trimming dies 33 that engage with each other have high operating intensity.

[0041] Furthermore, the power assembly 35 includes an inclined wedge driving block 351, an inclined wedge block 352, an inclined wedge guide plate 353 and a spring-pressing member 354. The inclined wedge driving block 351, the inclined wedge block 352 and the inclined wedge guide plate 353 are all installed in correspondence with the trimming die 33. The trimming die 33 is limited in lifting and lowering by at least one spring-pressing member 354 and is set on the inclined wedge block 352. The inclined wedge block 352 is limited in sliding on the lower die base 2 by the inclined wedge guide plate 353 to drive the trimming die 33 to approach or move away from the positioning block 32. The inclined wedge driving block 351 is embedded in the upper fixed plate 5. The inclined wedge drive block 351 has a driving inclined surface that is compatible with the inclined surface on the inclined wedge block 352, and the inclined wedge block 352 is driven to slide by the lifting and lowering of the inclined wedge drive block 351. In this embodiment, the spring-pressing member 354 adopts a nitrogen spring, and the inclined wedge block 352 is integrally formed with a die guide block 6 that is plugged into the trimming die 33 to guide the lifting and lowering of the trimming die 33; the inclined wedge block 352 and the inclined wedge guide plate 353 are slidably connected by a dovetail groove and a dovetail block, thereby ensuring the stability of the inclined wedge block 352 during the sliding process.

[0042] Reference Figure 3-Figure 8 In a further embodiment, a plurality of inclined wedge backers 7 are installed on the lower die base 2 corresponding to the trimming die 33. The inclined wedge backers 7 are welded or screwed to the side of the inclined wedge block 352 away from the positioning block 32. The inclined wedge backers 7 are installed with a material withdrawal spring assembly 8 connected to the corresponding inclined wedge block 352. The material withdrawal spring assembly 8 is used to pull the trimming die 33 away from the positioning block 32 after the inclined wedge driving block 351 drives the stamping to return.

[0043] The material stripping spring assembly 8 includes a material stripping bolt 81 and a material stripping spring part 82. The material stripping bolt 81 passes through the inclined wedge support 7 and is screwed to the inclined wedge block 352. The head of the material stripping bolt 81 is located on the side of the inclined wedge support 7 away from the positioning block 32. The material stripping spring part 82 is sleeved outside the material stripping bolt 81 and is located between the head of the material stripping bolt 81 and the side wall of the inclined wedge support 7. When trimming, the inclined wedge block 352 moves toward the direction close to the positioning block 32 under the drive of the inclined wedge driving block 351. At the same time, the inclined wedge block 352 drives The head of the material-removing bolt 81 moves and compresses the material-removing spring 82 to generate elastic potential energy; after the trimming is completed, the inclined wedge driving block 351 rises with the upper die base 1 to separate from the inclined wedge block 352 and push out the inclined wedge backer 7. At this time, the material-removing spring 82 loses the compression force and releases the elastic potential energy to push the head of the material-removing bolt 81 in the direction away from the inclined wedge backer 7. The material-removing bolt 81 drives the inclined wedge block 352 back to its original position, and the trimming die 33 opens from the locked state and returns to the starting height under the action of the spring-pressing piece 354.

[0044] Furthermore, a guide groove 71 is provided on the inclined wedge support 7 to drive and guide the inclined wedge driving block 351, and a limiting groove 3511 is provided at the bottom end of the inclined wedge driving block 351 to avoid the material withdrawal bolt 81. During the downward movement, the inclined wedge driving block 351 is first introduced into the limiting groove 3511 of the inclined wedge support 7. During the continued descent, the inclined wedge driving block 351 is completely introduced into the inclined wedge support 7, and the inclined wedge block 352 is driven by the inclined wedge driving block 351 to move toward the middle position in the horizontal direction.

[0045] Reference Figure 3 and Figure 5 The inclined wedge backer 7, the inclined wedge block 352 and the trimming punch 31 are all embedded in the lower fixed plate 4. A sliding groove is provided in the lower fixed plate 4 to guide the sliding of the inclined wedge block 352, thereby further improving the stability of the stamping and trimming operation of the trimming tooling 3.

[0046] The present invention provides a stamping and trimming method, which uses the above-mentioned stamping and trimming die structure to perform trimming processing on automobile parts products, including the following steps:

[0047] S1, assemble the stamping and trimming die structure and connect the upper die base 1 to the slider of the external stamping equipment;

[0048] S2, take out the product to be trimmed, and position it on the trimming punch 31 through the positioning block 32. Specifically, align the product to be trimmed with the positioning block 32 on the trimming punch 31, and press it downward along the vertical direction to fit the trimming surface of the trimming punch 31;

[0049] S3, the upper die base 1 is pressed down, and the multiple trimming dies 33 move synchronously toward the positioning block 32 and lock together. The pressing plate 34 drives the trimming dies 33 to press the product to be trimmed;

[0050] Specifically, the wedge driving block 351 is introduced into the wedge support 7 and continues to press downward. The wedge block 352 is subjected to the downward pressure of the wedge driving block 351 and moves horizontally toward the middle until the multiple trimming dies 33 are locked together. At this time, the trimming dies 33 are in a spring-loaded state under the action of the spring-pressing member 354. The upper die holder 1 continues to press downward. The trimming dies 33 press the outer surface of the product to be trimmed. The pressing plate 34 on the upper die holder 1 begins to contact the trimming dies 33.

[0051] S4, after the upper die holder 1, the trimming die 33 and the trimming punch 31 are fully in contact, they continue to descend until the upper die holder 1, the pressure plate 34, the product surface and the trimming die 33 are fully in contact and cut into the trimming punch 31, completing the trimming operation;

[0052] Specifically, after the pressing plate 34 contacts the trimming die 33, the upper die holder 1 continues to press down, and the trimming die 33 is moved downward under the pressure of the pressing plate 34 to cut into the trimming punch 31 until it cuts into the trimming punch 313 to about 5mm, completing the trimming action;

[0053] S5, the upper die base 1 rises along with the slider of the stamping equipment, the pressing plate 34 is separated from the trimming die 33, and the part is removed;

[0054] Specifically, after the trimming is completed, the stamping equipment drives the upper die base 1, the pressure plate 34 and the inclined wedge driving block 351 to rise, the pressure plate 34 separates from the trimming die 33, and the inclined wedge driving block 351 introduces the inclined wedge support 7 and partially rises to exit the inclined wedge support 7. The trimming die 33 is floated by the nitrogen spring pressure part 354 built into the inclined wedge block 352. At the same time, the inclined wedge block 352 is pulled by the material withdrawal spring assembly 8 and the inclined wedge block 352 is opened outward in the horizontal direction. After the inclined wedge block 352 is completely opened, the trimmed product can be removed.

[0055] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form or substance. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be regarded as the scope of protection of the present invention. Any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the spirit and scope of the present invention by using the technical content disclosed above are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A stamping and trimming die structure, comprising an upper die base and a lower die base arranged opposite to each other, characterized in that: The trimming tooling is provided between the upper die seat and the lower die seat for cooperating with the workpiece, and the upper die seat is connected to the external stamping equipment to move in the direction close to or away from the lower die seat to drive the trimming tooling to realize the stamping and trimming operation; the trimming tooling comprises a trimming punch, a positioning block, a trimming die and a pressing plate, the trimming punch is arranged on the lower die seat, the positioning block is provided on the upper part of the trimming punch, the outer wall of the positioning block is in contact with the inner wall of the workpiece to be trimmed so as to position the workpiece to be trimmed on the trimming punch, and the trimming die is provided with a plurality of and respectively arranged on the side of the positioning block. The trimming die is a snap-fit structure, and the workpiece to be trimmed is placed between the positioning block and the plurality of trimming dies, and the trimming portion of the workpiece to be trimmed is located between the bottom wall of the trimming die and the top surface of the trimming punch, and the pressing plate is arranged on the side of the upper die seat facing the lower die seat to press the trimming die tightly during trimming to transmit the downward force required for stamping; The trimming tooling also includes a power component for driving multiple trimming dies to synchronously approach or move away from the positioning block and to lift and lower. During the trimming operation, multiple trimming dies approach the positioning block and engage with each other to clamp the workpiece to be trimmed on the positioning block. After clamping, the pressing plate continues to press down to drive the trimming dies down, so that the trimming punch cuts upward into the trimming punch to complete the trimming.

2. The stamping and trimming die structure according to claim 1, characterized in that: The power assembly includes an inclined wedge driving block, an inclined wedge block, an inclined wedge guide plate and a spring-pressing piece. The inclined wedge driving block, the inclined wedge block and the inclined wedge guide plate are all provided in plurality corresponding to the trimming die. The trimming die is limited to rise and fall by at least one of the spring-pressing pieces and is set on the inclined wedge block. The inclined wedge block is limited to slide on the lower die base by the inclined wedge guide plate to drive the trimming die to approach or move away from the positioning block. The inclined wedge driving block is provided on the upper module and is lifted and lowered with the upper module. The inclined wedge driving block has a driving inclined surface adapted to the inclined surface on the inclined wedge block, and the sliding of the inclined wedge block is driven by the lifting and lowering of the inclined wedge driving block.

3. The stamping and trimming die structure according to claim 2, characterized in that: A plurality of inclined wedge backers are provided on the lower die base corresponding to the trimming die, and the inclined wedge backer is provided on the side of the inclined wedge block away from the positioning block. The inclined wedge backer is provided with a material return spring assembly connected to the corresponding inclined wedge block, and the material return spring assembly is used to pull the trimming die away from the positioning block after the inclined wedge drive block drives the stamping to return.

4. The stamping and trimming die structure according to claim 3, characterized in that: The material withdrawal spring assembly includes a material withdrawal bolt and a material withdrawal spring component. The material withdrawal bolt passes through the inclined wedge backer and is screwed to the inclined wedge block. The head of the material withdrawal bolt is located on the side of the inclined wedge backer away from the positioning block. The material withdrawal spring component is sleeved outside the material withdrawal bolt and is located between the head of the material withdrawal bolt and the side wall of the inclined wedge backer.

5. The stamping and trimming die structure according to claim 4, characterized in that: A guide groove is provided on the inclined wedge backrest to drive and guide the inclined wedge driving block, and a limiting groove is provided at the bottom end of the inclined wedge driving block to avoid the stripping bolt.

6. The stamping and trimming die structure according to claim 3, characterized in that: A lower fixed plate is provided on the lower die seat, and the inclined wedge backer, the inclined wedge block and the trimming punch are all embedded in the lower fixed plate.

7. The stamping and trimming die structure according to claim 2, characterized in that: The elastic member is a nitrogen spring, and the inclined wedge block is provided with a die guide block plugged with the trimming die to guide the lifting and lowering of the trimming die.

8. The stamping and trimming die structure according to claim 2, characterized in that: The oblique wedge block and the oblique wedge guide plate are slidably connected via a dovetail groove and a dovetail block.

9. The stamping and trimming die structure according to claim 1, wherein: The positioning block and the trimming punch can be detachably arranged on the lower die base.

10. A stamping and trimming method, characterized in that: Using the stamping and trimming die structure according to any one of claims 1 to 9 to perform trimming processing on automobile parts products comprises the following steps: Assembling the stamping and trimming die structure, connecting the upper die base to the external stamping equipment slider; The product to be trimmed is taken out and positioned on the trimming punch by the positioning block; the upper die seat is pressed downward, and the plurality of trimming dies are synchronously moved toward the positioning block and locked together, and the pressing plate drives the trimming dies to press the product to be trimmed; After the upper die seat, the trimming die and the trimming punch are fully in contact, they continue to descend until the upper die seat, the pressure plate, the product profile and the trimming die surface are completely in contact and cut into the trimming punch, completing the trimming action; The upper die seat rises along with the slider of the stamping equipment, and the pressing plate separates from the trimming die to complete the part removal.

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