A notching die

Abstract

This utility model discloses a grooving die, including a die base, a mounting part on the die base, an insert connected to the die, a mating unit on the insert, and a connecting unit on the mounting part. The mating unit and the connecting unit are fitted together. The insert has a punched hole, and the die base has a discharge hole. When the insert is connected to the die base, the punched hole communicates with the discharge hole. This utility model provides a grooving die that reduces damage to the die base during use, lowers costs by replacing the insert, and ensures that scrap material can fall smoothly.

Description

Technical Field

[0001] This utility model relates to the field of stamping manufacturing technology, and in particular to a slotting die. Background Technology

[0002] With the diversification of motor development, the size of sunroof motors is becoming increasingly smaller. This smaller size necessitates a relatively large area for the punched openings on the motor housing to accommodate other parts. For example, publication number "CN211758008U" discloses a "stamping die for motor housing production," comprising an upper die and a lower die. The upper die includes a first upper template and a second upper template, with a stamping rod connected to the first upper template. The second upper template has a die cavity and a first positioning through hole fitted with a first positioning rod. The first upper template also has a second positioning through hole. The lower die includes a first lower template and a second lower template. The first lower template has a blank groove and a hollow groove. The second lower template has a punch and an assembly groove fitted with a second positioning rod and a die spring. The first lower template also has a first through hole and a second through hole. However, in practical applications, when side punching is used, the thickness of the die cavity at the punch stamping point varies, making the die less durable during the stamping process, frequently chipping and requiring frequent replacement. Summary of the Invention

[0003] In view of the problems mentioned in the background art, such as the lack of durability of the die and the frequent chipping of corners, this utility model provides a punching die that can reduce damage to the die base during use, reduce costs by replacing the inserts, and ensure that the scrap material can fall smoothly.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] A grooving die includes a die base, a mounting part on the die base, an insert connected to the die base, a mating unit on the insert, and a connecting unit on the mounting part. The mating unit and the connecting unit are fitted together. The insert has a punched hole, and the die base has a discharge hole. When the insert is connected to the die base, the punched hole connects to the discharge hole. With the diversification of motor development, the size of sunroof motors is becoming increasingly smaller. Due to the smaller size, the grooving opening on the motor housing needs to be relatively large to accommodate other parts. Scrap material from side punching needs to be discharged within the die. Due to product limitations, the die must meet both the grooving requirements and the need for material discharge. However, side punching dies have complex shapes and high costs. Furthermore, the thickness difference at the contact point between the die and the punch after the die is hollowed out makes the die less durable during the stamping process, leading to frequent corner chipping and replacement. When corner chipping occurs, the entire die needs to be replaced; otherwise, the stamped shape will not meet the usage requirements. Replacement costs are high. Therefore, to address this issue, this application divides the die into a die base and an insert. The insert is detachable from the die base. A punch is set on the insert, and a discharge hole is provided on the die base, communicating with the punch. During operation, the press repeatedly punches the waste material and discharges it through the discharge hole. If the punch is damaged or chipped during stamping, the insert is removed from the die base, and a new insert is installed. Work can continue through the new, undamaged punch. Since only one insert is replaced, the cost of replacing the die base is saved. The insert and die base are connected by mating and connecting units to ensure connection stability and ease of disassembly. The sliding direction of the mating is controlled to be perpendicular to the stamping direction to prevent the insert from sliding during stamping.

[0006] Preferably, the die base is provided with an axial pin hole, and the mating sliding direction of the docking unit and the connecting unit is parallel to the axial direction of the axial pin hole. A portion of the docking unit is located within the axial pin hole. An axial small hole is provided on the die base, parallel to the mating sliding direction. Since a portion of the docking unit is not located within the axial pin hole, the entire axial pin hole is not a complete mounting hole structure. It needs to be fitted with the docking unit to form a complete mounting hole. This allows fasteners such as screws connected to the axial pin hole to simultaneously abut against both the axial pin hole and the docking unit. This provides a limiting constraint effect on the docking unit in the axial direction (mating sliding direction), preventing the insert from coming out in the axial direction. Simultaneously, because a portion of the docking unit is located within the axial pin hole, fasteners such as pins connected to the axial pin hole can complete the limiting of the docking unit within the axial pin hole, preventing the screw from protruding from the axial pin hole and ensuring the surface flatness of the entire die.

[0007] Preferably, the axial pin hole has a stepped surface, and the mating unit includes a mating edge with a notch. The notch has a bottom surface, and when the mating unit and the connecting unit are engaged, the bottom surface of the notch is flush with the stepped surface. The stepped surface in the axial pin hole is used to abut against fasteners such as screws. Since the mating unit is partially located in the axial pin hole, and the mating edge of the mating unit has a notch with the bottom surface of the notch flush with the stepped surface, it is ensured that when the screw is connected in the axial pin hole and the nut abuts against the stepped surface, it will simultaneously abut against the bottom surface of the notch, thus providing an axial limiting effect for the mating unit.

[0008] Preferably, the axial pin hole includes an inner wall of an upper pin hole, and the notch includes a notch side. When the mating unit and the connecting unit are engaged, the notch side is flush with the inner wall of the upper pin hole. The notch includes a notch side, and by configuring the notch side to match the inner wall of the upper pin hole, the notch side is controlled to be flush with the inner wall of the upper pin hole. This ensures that fasteners such as screws will not interfere with installation, guaranteeing a smooth inner wall of the mounting hole structure formed by the axial pin hole and the mating unit.

[0009] Preferably, the discharge hole includes a connecting port on the mounting part, the mounting part includes a radial pin hole above the connecting port, and the insert includes a mating pin hole above the punch. When the mating unit and the connecting unit are engaged, the radial pin hole and the mating pin hole are aligned. The connecting port on the discharge hole communicates with the punch on the insert for waste discharge. A radial small hole is provided above the connecting port, and the radial pin hole corresponds to the mating pin hole on the insert. When the insert is connected to the die base, the radial pin hole and the mating pin hole are aligned. The connection stability between the insert and the die base can be further improved by using fasteners such as connecting screws.

[0010] Preferably, the mounting portion includes a connecting side, on which the connecting unit is located. The mounting portion also includes a supporting bottom surface, whereby the bottom surface of the insert fits against the supporting bottom surface when the insert is connected to the die base. The mounting portion includes a connecting side, where the connecting unit is disposed and connected to the mating unit on the insert. The mounting portion also includes a supporting bottom surface, which fits against the bottom surface of the insert, allowing the insert to be quickly positioned during the connection process. Simultaneously, since the mating unit and the connecting unit are interlocked, similar to a mortise and tenon joint, the mating unit is embedded in the connecting unit. A "T"-shaped groove and protrusion structure prevent the mating unit from detaching from the connecting unit, ensuring the stability of the connection.

[0011] Preferably, the die base includes a bottom plate with a plurality of mounting pin holes. The mounting pin holes on the bottom plate of the die base ensure the fixation of the bottom plate and guarantee the stability of the die base.

[0012] Preferably, the mounting pin holes are evenly distributed along the circumferential direction of the bottom plate. Evenly distributed mounting pin holes improve the stability of the die base.

[0013] Preferably, the discharge orifice is an enlarged orifice. Setting the discharge orifice as an enlarged orifice improves discharge efficiency and prevents jamming.

[0014] Preferably, the discharge orifice includes a rectangular half-orifice and a circular half-orifice, which are joined and connected. The rectangular half-orifice is the area extending downwards from the connecting unit. Since the connecting unit and the docking unit are interlocked, generally with a rectangular structure, its extended area forms the rectangular half-orifice. The remaining area of ​​the discharge orifice is set as a circular half-orifice structure, and the circular and rectangular half-orifices are connected. This allows for a larger discharge space for the waste material, ensures smooth discharge, and reduces jamming.

[0015] The beneficial effects of this utility model are as follows: (1) By separating the insert and the die base and connecting them by fitting, the stability of the connection and the ease of disassembly are ensured. At the same time, the punching is set on the insert, which reduces the cost of replacement after the punching is damaged. (2) By partially setting the docking unit in the axial pin hole and connecting the docking unit and the axial pin hole with screws, the insert is limited and connected with the radial pin hole and the docking pin hole to prevent the insert from coming out. (3) By setting an enlarged hole structure in the discharge hole and setting the enlarged hole as a combination of a circular half hole and a rectangular half hole, it is possible to facilitate the processing of the connecting unit while ensuring the smooth discharge of the discharge hole. Attached Figure Description

[0016] Figure 1 This is the first isometric drawing of this utility model.

[0017] Figure 2 This is the first exploded view of this utility model.

[0018] Figure 3 This is the second exploded view of this utility model.

[0019] Figure 4 This is the second isometric drawing of this utility model.

[0020] Figure 5 This is the third axonometric drawing of this utility model.

[0021] Figure 6 This is an isometric view of the insert in this utility model.

[0022] In the picture: 1. Die base, 11. Mounting part, 12. Connecting unit, 13. Discharge center hole, 131. Rectangular half hole, 132. Circular half hole, 14. Axial pin hole, 141. Stepped surface, 142. Inner wall of upper pin hole, 15. Connecting port, 16. Radial pin hole, 17. Connecting side, 18. Support bottom surface, 19. Bottom plate, 191. Mounting pin hole. 2. Insert, 21. Connecting unit, 211. Connecting edge, 212. Notch, 213. Notch bottom surface, 214. Notch side surface, 22. Punch, 23. Connecting pin hole. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1: like Figure 1 , 2As shown in Figure 3, a punching die insert 2 structure includes a die base 1, a mounting part 11 on the die base 1, an insert 2 connected to the die base 1, a docking unit 21 on the insert 2, and a connecting unit 12 on the mounting part 11. The docking unit 21 and the connecting unit 12 are fitted together. The insert 2 has a punch 22, and the die base 1 has a discharge hole 13. When the insert 2 is connected to the die base 1, the punch 22 connects to the discharge hole 13. With the diversification of motor development, the size of sunroof motors is becoming smaller. Due to the smaller size, the punching opening on the motor housing needs to be relatively large to accommodate other parts. The waste material after punching the side hole 22 needs to be discharged within the die. Due to product limitations, the die must meet both the punching requirements and the discharge requirements. Side-punch dies have complex shapes and high costs. Because the center is hollowed out, the thickness of the die at the contact point with the punch varies, making the die less durable during the stamping process. This often results in chipping and frequent replacements. Once chipping occurs, the entire die needs to be replaced; otherwise, the stamped shape will not meet the requirements. Replacement costs are high. Therefore, to address the aforementioned issues, this application divides the die into a die base 1 and an insert 2. The insert 2 can be detached from the die base 1. A punch 22 is set on the insert 2, and a discharge hole 13 is provided on the die base 1. The punch 22 communicates with the discharge hole 13, so that during operation, the press punches the waste material repeatedly through the punch 22 and discharges it through the discharge hole 13. If the punch 22 is damaged or chipped during the stamping process, the insert 2 can be removed from the die base 1, and a new insert 2 can be replaced to continue working through the new, undamaged punch 22. Since only one insert 2 needs to be replaced, the cost of replacing the die base 1 is saved. The insert 2 and the die base 1 are connected by a mating unit 21 and a connecting unit 12 to ensure the stability of the connection and the ease of disassembly. It is necessary to control the sliding direction of the mating to be perpendicular to the stamping direction to prevent the insert 2 from sliding during the stamping process.

[0025] like Figure 2 , 3 As shown, the discharge hole 13 includes a connecting port 15 located on the mounting part 11. The mounting part 11 includes a radial small hole 16 located above the connecting port 15. The insert 2 includes a mating pin hole 23 located above the punch 22. When the mating unit 21 and the connecting unit 12 are engaged, the radial small hole 16 is aligned with the mating pin hole 23. The connecting port 15 on the discharge hole 13 communicates with the punch 22 on the insert 2 for waste discharge. A radial small hole is provided above the connecting port 15. The radial small hole 16 is correspondingly provided with the mating pin hole 23 on the insert 2. When the insert 2 is connected to the die base 1, the radial small hole 16 is aligned with the mating pin hole 23. The connection stability between the insert 2 and the die base 1 can be further improved by using fasteners such as connecting screws.

[0026] like Figure 2 As shown, the mounting part 11 includes a connecting side 17, and the connecting unit 12 is located on the connecting side 17. The mounting part 11 also includes a supporting bottom surface 18. When the insert 2 is connected to the die base 1, the bottom surface of the insert 2 fits against the supporting bottom surface 18. The mounting part 11 includes a connecting side 17, wherein the connecting unit 12 is disposed on the connecting side 17 and connected to the mating unit 21 on the insert 2. The mounting part 11 also has a supporting bottom surface 18, which can fit against the bottom surface of the insert 2, so that the insert 2 can be quickly positioned through the supporting bottom surface 18 during the connection process. At the same time, since the mating unit 21 and the connecting unit 12 are interlocked, similar to the mortise and tenon structure, the mating unit 21 is embedded in the connecting unit 12. The mating unit 21 is prevented from coming out of the connecting unit 12 by a T-shaped groove and protrusion structure, ensuring the stability of the connection.

[0027] like Figure 1 , 4 As shown, the die base 1 includes a bottom plate 19, on which a plurality of mounting pin holes 191 are provided, and the mounting pin holes 191 are evenly distributed along the circumferential direction of the bottom plate 19. The mounting pin holes 191 on the bottom plate 19 of the die base 1 ensure the fixation of the bottom plate and guarantee the stability of the die base 1. The even distribution of the mounting pin holes 191 improves the stability of the die base 1.

[0028] like Figure 3 , 4 As shown, the discharge orifice 13 is an enlarged orifice. The discharge orifice 13 includes a rectangular half-orifice 131 and a circular half-orifice 132, which are joined and connected. Setting the discharge orifice 13 as an enlarged orifice improves discharge efficiency and prevents jamming. The discharge orifice 13 includes a rectangular half-orifice 131 and a circular half-orifice 132. The rectangular half-orifice 131 is the area extending downwards from the connecting unit 12. Since the connecting unit 12 and the docking unit 21 are interlocked, generally a rectangular structure, its extended area forms the rectangular half-orifice 131. The remaining area of ​​the discharge orifice 13 is set as a circular half-orifice 132 structure, and the circular half-orifice 132 and the rectangular half-orifice 131 are connected, thereby allowing for a larger discharge space for the waste material and ensuring smooth discharge, reducing jamming.

[0029] Example 2: like Figure 5 , 6As shown, the die base 1 has an axial pin hole 14. The sliding direction of the mating unit 21 and the connecting unit 12 is parallel to the axial direction of the axial pin hole 14. The mating unit 21 is partially located inside the axial pin hole 14. A stepped surface 141 is provided inside the axial pin hole 14. The mating unit 21 includes a mating edge 211, and a notch 212 is provided on the mating edge 211. The notch 212 includes a notch bottom surface 213. When the mating unit 21 and the connecting unit 12 are mated, the notch bottom surface 213 is flush with the stepped surface 141. The axial pin hole 14 includes an upper pin hole inner wall 142, and the notch 212 includes a notch side surface 214. When the mating unit 21 and the connecting unit 12 are mated, the notch side surface 214 is flush with the upper pin hole inner wall 142.

[0030] An axial hole is provided on the die base 1, which is parallel to the mating sliding direction. The docking unit 21 is not partially placed in the axial pin hole 14. Therefore, the entire axial pin hole 14 is not a complete mounting hole structure. It needs to be matched with the docking unit 21 to form a complete mounting hole. This allows the axial pin hole 14 and the docking unit 21 to be simultaneously abutted after the fasteners such as screws are connected to the axial pin hole 14. This enables the docking unit 21 to obtain a limiting constraint effect in the axial direction (matting sliding direction), preventing the insert 2 from coming out in the axial direction. At the same time, since the part of the docking unit 21 is located in the axial pin hole 14, the fasteners such as pins connected to the axial pin hole 14 can complete the limiting of the docking unit 21 in the axial pin hole 14, preventing the screw from protruding from the axial pin hole 14 and ensuring the surface flatness of the entire die. A stepped surface 141 is provided inside the axial pin hole 14 for abutting fasteners such as screws. Since the mating unit 21 is partially located inside the axial pin hole 14, and a notch 212 is provided on the mating edge 211 of the mating unit 21, with the bottom surface 213 of the notch 212 flush with the stepped surface 141, it is ensured that when the screw is connected inside the axial pin hole 14 and the nut abuts against the stepped surface 141, it will simultaneously abut against the bottom surface 213 of the notch, thus providing an axial limiting effect for the mating unit 21. The notch 212 includes a notch side 214, which is configured to match the inner wall 142 of the upper pin hole. By controlling the notch side 214 to be flush with the inner wall 142 of the upper pin hole, interference will not occur when fasteners such as screws are installed, ensuring a smooth inner wall of the mounting hole structure formed by the axial pin hole 14 and the mating unit 21.

[0031] The device includes a die base 1, a mounting part 11, an insert 2 connected to the die base 1, a docking unit 21 on the insert 2, and a connecting unit 12 on the mounting part 11. The docking unit 21 and the connecting unit 12 are fitted together. The insert 2 has a punch 22, and the die base 1 has a discharge hole 13. When the insert 2 is connected to the die base 1, the punch 22 communicates with the discharge hole 13. The discharge hole 13 includes a connecting opening 15 on the mounting part 11. The mounting part 11 includes a radial small hole 16 above the connecting opening 15. The insert 2 includes a docking pin hole 23 above the punch 22. When the docking unit 21 and the connecting unit 12 are fitted together, the radial small hole 16 is aligned with the docking pin hole 23. The mounting part 11 includes a connecting side 17, on which the connecting unit 12 is located. The mounting part 11 includes a supporting bottom surface 18. When the insert 2 is connected to the die base 1, the bottom surface of the insert 2 fits against the supporting bottom surface 18. The die base 1 includes a bottom plate 19, on which a plurality of mounting pin holes 191 are provided. The discharge hole 13 is an enlarged hole. The discharge hole 13 includes a rectangular half-hole 131 and a circular half-hole 132, which are joined and connected.

[0032] In this application, the die is divided into a die base 1 and an insert 2. The insert 2 can be detached from the die base 1. A punch 22 is set on the insert 2. A discharge hole 13 is set on the die base 1, and the punch 22 is connected to the discharge hole 13. Thus, during the operation, the press punches the waste material repeatedly through the punch 22 and discharges it through the discharge hole 13. If the punch 22 is damaged or chipped during the stamping process, the insert 2 can be removed from the die base 1 and a new insert 2 can be replaced. The work can continue through the new undamaged punch 22. Since only one insert 2 is replaced, the cost of replacing the die base 1 is saved. The insert 2 and the die base 1 are connected by a mating unit 21 and a connecting unit 12 to ensure the stability of the connection and the ease of disassembly. It is necessary to control the sliding direction of the mating to be perpendicular to the stamping direction to avoid the insert 2 sliding during the stamping process.

[0033] The connecting port 15 on the discharge hole 13 is connected to the punch hole 22 on the insert 2 for waste discharge. A radial hole 16 is provided above the connecting port 15 and is correspondingly set with the mating pin hole 23 on the insert 2. When the insert 2 is connected to the die base 1, the radial hole 16 is aligned with the mating pin hole 23. The connection stability between the insert 2 and the die base 1 can be further improved by connecting screws and other fasteners.

[0034] The mounting part 11 includes a connecting side 17, on which a connecting unit 12 is disposed and connected to the mating unit 21 on the insert 2. A supporting bottom surface 18 is also provided on the mounting part 11, which can fit against the bottom surface of the insert 2, so that the insert 2 can be quickly positioned by the supporting bottom surface 18 during the connection process. At the same time, since the mating unit 21 and the connecting unit 12 are interlocked, similar to the mortise and tenon structure, the mating unit 21 is embedded in the connecting unit 12, and the mating unit 21 is prevented from coming out of the connecting unit 12 by a T-shaped groove and protrusion structure, thus ensuring the stability of the connection.

[0035] Mounting pin holes 191 are provided on the bottom plate 19 of the die base 1. These mounting pin holes 191 ensure the fixation of the base and guarantee the stability of the die base 1. The mounting pin holes 191 are evenly distributed along the circumferential direction of the bottom plate 19. The even distribution of the mounting pin holes 191 improves the stability of the die base 1.

[0036] Setting the discharge orifice 13 as an enlarged structure can improve discharge efficiency and prevent jamming. The discharge orifice 13 includes a rectangular half-hole 131 and a circular half-hole 132. The rectangular half-hole 131 is the area extending downward from the connecting unit 12. Since the connecting unit 12 and the docking unit 21 are interlocked, they are generally rectangular structures, so their extended area forms the rectangular half-hole 131. The remaining area of ​​the discharge orifice 13 is set as a circular half-hole 132 structure, and the circular half-hole 132 and the rectangular half-hole 131 are connected. This allows the waste material to have a larger discharge space and ensures smooth discharge, reducing jamming.

Claims

1. A slotting die, characterized in that, The device includes a die base, a mounting part on the die base, an insert connected to the die base, a docking unit on the insert, a connecting unit on the mounting part, the docking unit and the connecting unit being fitted together, a punch on the insert, and a discharge hole on the die base. When the insert is connected to the die base, the punch communicates with the discharge hole.

2. A slotting die according to claim 1, characterized in that, The die base is provided with an axial pin hole, and the mating sliding direction of the docking unit and the connecting unit is parallel to the axial direction of the axial pin hole. The docking unit is partially located inside the axial pin hole.

3. A slotting die according to claim 2, characterized in that, The axial pin hole is provided with a stepped surface, the docking unit includes a docking edge, the docking edge is provided with a notch, the notch includes a bottom surface, and when the docking unit and the connecting unit are fitted together, the bottom surface of the notch is flush with the stepped surface.

4. A slotting die according to claim 3, characterized in that, The axial pin hole includes an inner wall of the upper pin hole, and the notch includes a side notch. When the docking unit and the connecting unit are fitted together, the side notch is flush with the inner wall of the upper pin hole.

5. A slotting die according to claim 1, characterized in that, The discharge hole includes a connecting port on the mounting part, the mounting part includes a radial pin hole above the connecting port, and the insert includes a docking pin hole above the punch. When the docking unit and the connecting unit are fitted together, the radial pin hole and the docking pin hole are aligned.

6. A slotting die according to claim 1, characterized in that, The mounting part includes a connecting side, the connecting unit is located on the connecting side, and the mounting part includes a supporting bottom surface. When the insert is connected to the die base, the bottom surface of the insert fits against the supporting bottom surface.

7. A slotting die according to any one of claims 1-6, characterized in that, The die base includes a bottom plate, and the bottom plate is provided with a plurality of mounting pin holes.

8. A slotting die according to claim 7, characterized in that, Each of the mounting pin holes is evenly distributed along the circumferential direction of the bottom plate.

9. A slotting die according to any one of claims 1-6, characterized in that, The discharge hole is an enlarged hole.

10. A slotting die according to claim 9, characterized in that, The discharge hole includes a rectangular half-hole and a circular half-hole, which are connected and joined together.

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