Motor core piece blanking die with blank guiding structure

Abstract

The utility model discloses a motor core piece blanking mould with blanking guide structure, and the movable mould structure includes movable module, blanking punch and center guide block, the blanking punch is installed in the first installation hole of movable module, and the blanking forming end of blanking punch has the state of protruding from the unloading surface of movable module, and the center guide block is installed in the second installation hole of the center position on blanking punch, and the guide end of center guide block is set up protrudingly on the forming surface of blanking punch, the fixed mould structure includes fixed module and blanking recessed mould, is provided with blanking channel on fixed module, and the blanking recessed mould is installed in the third installation hole of fixed module, and blanking punch and blanking channel all are coaxial with the forming hole of blanking recessed mould and are set up with the diameter of adaptation, and it is the motor core piece production that meets the requirement to improve production qualified rate.

Description

Technical Field

[0001] This utility model relates to the technical field of positioning during the blanking and forming of motor iron chips, and particularly to a blanking mold for motor iron chips with a blanking guide structure. Background Technology

[0002] In the traditional method, the manufacturing of motor iron cores generally uses a progressive die for continuous feature punching and finally blanking to form the core. The blanked motor iron cores are stacked in the blanking channel to form the motor iron core. However, during the progressive die punching process, the strip is prone to deviation, which leads to the deviation of the shaft hole center of the blanked motor iron core. This results in the punched motor iron cores being unqualified, unable to meet production requirements, and having a low production qualification rate. Utility Model Content

[0003] The purpose of this utility model is to design a motor iron chip blanking mold with a blanking guide structure to overcome the shortcomings of the above-mentioned technology.

[0004] The present invention relates to a blanking die for motor iron chips with a blanking guide structure, comprising: A moving mold structure includes a movable module, a blanking punch, and a center guide block. The blanking punch is installed in a first mounting hole of the movable module, and the blanking forming end of the blanking punch protrudes from the unloading surface of the movable module. The center guide block is installed in a second mounting hole at the center position of the blanking punch, and the guiding end of the center guide block is provided protruding from the forming surface of the blanking punch. A fixed mold structure includes a fixed module and a blanking die. The fixed module is provided with a blanking channel. The blanking die is installed in the third mounting hole of the fixed module. The blanking punch and the blanking channel are both coaxial with the forming hole of the blanking die and are adapted to each other in diameter. The blanking punch has a blanking forming end shape and the blanking die has a forming hole shape that are adapted to the shape of the motor iron chip. The center guide block has a guide end shape that is adapted to the shaft hole already formed on the motor iron chip.

[0005] According to the above-described blanking die for motor iron chips with blanking guide structure, the guiding end of the central guiding block is a frustum structure with an upper diameter larger than the lower diameter.

[0006] According to the above-described blanking die for motor iron chips with blanking guide structure, the guide end edge of the central guide block is formed with a rounded chamfer or a beveled chamfer.

[0007] According to the above-described blanking die with blanking guide structure for motor iron chips, a guide through hole communicating with the second mounting hole is formed at the center position of the blanking punch. An assembly hole coaxially arranged with the guide through hole and a guide cavity located below the assembly hole are formed on the movable module. A movable pad is movably arranged in the guide cavity. A guide block is arranged in the guide through hole. The two ends of the guide block are fixedly connected to the center guide block and the movable pad, respectively. A support spring is arranged in the assembly hole. The two ends of the support spring abut against the inner wall of the end of the movable pad and the assembly hole, respectively. Alternatively, a spring pad is fixed on the movable pad and inserted into the assembly hole. The two ends of the support spring abut against the end face of the spring pad and the inner wall of the end of the assembly hole, respectively, so that the guiding end of the center guide block remains elastically protruding on the forming surface of the blanking punch.

[0008] According to the above-described blanking die for motor iron chips with blanking guide structure, the movable module includes a movable die base and a blanking assembly. The movable die base and the blanking assembly are parallel to each other and spaced apart to form an movable space. A first mounting hole is formed on the blanking assembly, and an assembly hole is formed on the movable die base. The blanking punch has a T-shaped structure, and its longitudinal part and transverse part are respectively located in the first mounting hole and the movable space. The transverse part of the blanking punch is fixed on the movable die base, and the transverse part of the blanking punch and the opposite side of the movable die base form a recess. The two recesses are joined together to form a guide cavity. The transverse part of the blanking punch is also provided with at least one guide hole. A height equalizer is inserted in the guide hole, and one end of the height equalizer is fixedly connected to the movable pad. In the mold-closed state, the other end of the equal-height block abuts against the side of the unloading assembly facing the mold base, and there is a gap between the upper and lower sides of the movable pad and the upper and lower inner walls of the guide cavity, respectively. The blanking forming end of the blanking punch protrudes from the unloading surface of the movable module and fits into the forming hole of the blanking die. In the mold-open state, there is a gap between the other end of the equal-height block and the side of the unloading assembly facing the mold base, and there is a gap between the upper side of the movable pad and the upper inner wall of the guide cavity, and the blanking forming end of the blanking punch retracts into the first mounting hole. However, during the mold opening process, since the guiding end of the central guide block always maintains an elastic protrusion on the forming surface of the blanking punch, the guiding end of the central guide block always positions the motor iron chip of the blanking channel during the mold opening process until it is completely removed.

[0009] According to the above-described motor iron chip blanking mold with blanking guide structure, the unloading group has a height equalization pad embedded and fixed on the side facing the moving mold base, and the position of the height equalization pad corresponds to the height equalization block.

[0010] According to the above-described blanking die with blanking guide structure for motor iron chips, the unloading group forms a recessed part that matches the transverse part of the blanking punch, and the equal height pad is embedded and fixed in the bottom inner wall of the recessed part.

[0011] According to the above-described motor iron chip blanking mold with blanking guide structure, the unloading group includes a blanking seat and a blanking plate that are stacked and fixedly arranged. The blanking seat is located on the side close to the moving mold seat, and the blanking plate is located on the side close to the fixed mold structure. The recess is formed on the side of the blanking seat facing the moving mold seat.

[0012] According to the above-described blanking die with blanking guide structure for motor iron chips, the blanking forming end of the blanking punch and the guiding end of the central guide block are both circular.

[0013] According to the above-described blanking die for motor iron chips with blanking guide structure, the fixed module includes a fixed die base and a recessed plate that are stacked and fixedly arranged. The recessed plate is located on the side close to the moving die structure. A third mounting hole for embedding and installing the blanking die is formed on the recessed plate. The forming hole of the blanking die is circular.

[0014] The advantages of the motor iron chip blanking mold with blanking guidance structure designed in this utility model are as follows: By using a protruding center guide block on the blanking punch, the shaft hole at the blanking position on the strip is pre-positioned during blanking and punching of the motor iron chip. Then, the blanking and punching of the motor iron chip is performed to form a motor iron chip with the shaft hole center meeting the production requirements, thereby improving the production qualification rate. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the mold in its open state.

[0016] Figure 2 yes Figure 1 A magnified view of a portion of the image.

[0017] Figure 3 This is a schematic diagram of the mold closing state when the stripper plate contacts the strip material.

[0018] Figure 4 This is a schematic diagram of the mold-closed state structure where the equal-height blocks and equal-height pads are in contact.

[0019] Figure 5 This is a schematic diagram of a blanking punch that only passes through the strip material.

[0020] Figure 6 This is a schematic diagram of the blanking punch entering the forming hole after passing through the strip material.

[0021] Figure 7 This is a schematic diagram of the blanking punch passing through the strip material, entering the forming hole, and completing the blanking process.

[0022] In the diagram: 1. Movable module; 10. Movable pad; 11. Moving mold base; 12. Unloading assembly; 13. Blanking punch; 14. Center guide block; 15. Guide block; 16. Support spring; 17. Spring pad; 18. Equal height block; 19. Guide cavity; 111. Assembly hole; 112. Recess; 121. Unloading seat; 122. Unloading plate; 123. First mounting hole; 124. Recessed part; 125. Equal height pad; 131. Longitudinal part; 132. Transverse part; 133. Second mounting hole; 134. Guide through hole; 141. Guide end; 2. Fixed module; 21. Concave fixing plate; 22. Fixed mold base; 23. Blanking die; 231. Forming hole; 100, strip material; 200, motor iron chip. Detailed Implementation

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

[0024] Example: As shown in the attached figure, the blanking die for motor iron chips with blanking guide structure described in this embodiment includes a moving die structure and a fixed die structure. When the moving die structure and the fixed die structure are closed, the blanking punch 13 and the forming hole 231 cooperate with each other to blank and punch the strip material to form a motor iron chip. When the moving die structure and the fixed die structure are closed, the blanking punch 13 and the forming hole 231 are separated.

[0025] In this embodiment, the moving mold structure includes a movable module 1, a blanking punch 13, and a center guide block 14. The blanking punch 13 is installed in the first mounting hole 123 of the movable module 1. The blanking forming end of the blanking punch 13 protrudes from the unloading surface of the movable module 1. The center guide block 14 is installed in the second mounting hole 133 at the center position of the blanking punch 13. The guiding end 141 of the center guide block 14 is set protruding from the forming surface of the blanking punch 13. Its structure is set so that after the unloading surface of the unloading plate 122 contacts the upper side of the strip 100 on the fixed mold structure, the guiding end 141 of the center guide block 14 self-centers and inserts into the already formed shaft hole on the strip 100, thereby pre-centering the area on the strip where the motor iron chip 200 needs to be formed. Preferably, the guiding end 141 of the center guiding block 14 is a frustum structure with an upper diameter larger than the lower diameter. The edge of the guiding end 141 of the center guiding block 14 is formed with a rounded chamfer or a beveled chamfer. The guiding end 141 of the center guiding block 14 is self-centeringly inserted into the pre-formed shaft hole on the strip material through the setting of the frustum structure and the chamfer structure, so that the shaft hole can be self-centered easily when the mold is closed. The self-centering is more convenient, especially for the self-positioning of the strip material after it has been offset.

[0026] Furthermore, a guide hole 134 communicating with the second mounting hole 133 is formed at the center position of the blanking punch 13. An assembly hole 111 coaxially arranged with the guide hole 134 and a guide cavity 19 located below the assembly hole 111 are formed on the movable module 1. A movable pad 10 is movably disposed within the guide cavity 19. A guide block 15 is disposed within the guide hole 134. Both ends of the guide block 15 are fixedly connected to the center guide block 14 and the movable pad 10, respectively. A support spring 16 is disposed within the assembly hole 111. Both ends of the support spring 16 abut against the inner walls of the movable pad 10 and the assembly hole 111, respectively. Alternatively, a spring pad 17 inserted into the assembly hole 111 is fixed on the movable pad 10. The two ends of the support spring 16... The ends respectively abut against the end face of the spring pad 17 and the inner wall of the end of the mounting hole 111, so that the guiding end 141 of the center guide block 14 keeps elastically protruding on the forming surface of the blanking punch 13. The center guide block 14 is supported by the support spring 16, so that the center guide block 14 has an elastic extension function, thereby preventing the eccentric strip from having a hard collision with the guiding end 141 of the center guide block 14. When the guiding end 141 of the center guide block 14 contacts the strip, it has elastic buffering to avoid damage to the strip. The support spring 16 is a spring with an elastic force less than the strength of the strip. The diameter of the guide through hole 134 is smaller than the diameter of the second mounting hole 133, and there is a movable gap between the bottom inner wall of the second mounting hole 133 and the upper side wall of the center guide block 14.

[0027] Furthermore, the movable module 1 includes a movable mold base 11 and an unloading assembly 12. The movable mold base 11 and the unloading assembly 12 are parallel to each other and spaced apart to form an active space. A first mounting hole 123 is formed on the unloading assembly 12, and an assembly hole 111 is formed on the movable mold base 11. The blanking punch 13 has a T-shaped structure, and its longitudinal portion 131 and transverse portion 132 are respectively located in the first mounting hole 123 and the active space. The transverse portion 132 of the blanking punch 13 is fixed to the movable mold base 11, and the transverse portion 132 of the blanking punch 13 is fixed to the movable mold base 11. The opposing sides of the die 13 and the moving die base 11 form recesses 112, which fit together to form a guide cavity 19. The transverse part 132 of the blanking punch 13 is also provided with at least one guide hole, and an equalizing block 18 passes through the guide hole. One end of the equalizing block 18 is fixedly connected to the movable pad 10. In the mold closing state, the other end of the equalizing block 18 abuts against the side of the unloading assembly 12 facing the moving die base 11, and the upper and lower sides of the movable pad 10 respectively contact the guide cavity. There is a gap between the upper and lower inner walls of 19. The guiding end 141 of the center guide block 14 is inserted into the shaft hole that has been formed on the strip. Then, the blanking forming end of the blanking punch 13 protrudes from the unloading surface of the movable module 1 and fits into the forming hole 231 of the blanking die 23, thereby forming the motor iron chip after the shaft hole is centered. In the mold-opening state, there is a gap between the other end of the equalizing block 18 and the side of the unloading group 12 facing the movable mold base 11. The support spring 16 drives the movable pad 10 to move towards The downward movement creates a gap between the upper side of the movable pad 10 and the upper inner wall of the guide cavity 19, and the lower side of the movable pad 10 abuts against the lower inner wall of the guide cavity 19. The blanking forming end of the blanking punch 13 retracts into the first mounting hole 123, causing the formed motor iron chip to separate from the blanking forming end of the blanking punch 13 under the action of the unloading surface of the unloading group 12, thus preventing the blanking punch 13 from carrying out the formed motor iron chip. In addition, the guiding end 141 of the center guiding block 14 also separates from the shaft hole on the motor iron chip.

[0028] During the mold opening process, since the guiding end of the central guide block always maintains an elastic protrusion on the forming surface of the blanking punch, the guiding end of the central guide block always positions the motor iron chip of the blanking channel during the mold opening process until it is completely separated, thus achieving positioning function in both mold opening and mold closing.

[0029] More preferably, the unloading assembly 12 includes an unloading seat 121 and an unloading plate 122 that are stacked and fixedly arranged. The unloading seat 121 is located on the side closer to the moving mold base 11, and the unloading plate 122 is located on the side closer to the fixed mold structure. The side of the unloading seat 121 facing the moving mold base 11 forms a recessed portion 124 that matches the transverse portion 132 of the blanking punch 13. The leveling block 125 is embedded and fixed in the bottom inner wall of the recessed portion 124. The position of the leveling block 125 is... Corresponding to the equalizing block 18, the unloading assembly 12 is embedded and fixed with an equalizing pad 125 on the side facing the moving mold base 11 to prevent the equalizing block 18 from wearing the unloading base 121. The hardness of the equalizing pad 125 is higher than that of the unloading base 121. The equalizing pad 125 is fixed by bolts, which facilitates the replacement of the equalizing block 18. The unloading base 121 and the unloading plate 122 are provided with through holes so that the two through holes are coaxially arranged to form the first mounting hole 123.

[0030] In this embodiment, the fixed mold structure includes a fixed module 2 and a blanking die 23. The fixed module 2 is provided with a blanking channel. The blanking die 23 is installed in the third mounting hole of the fixed module 2. The blanking punch 13 and the blanking channel are both coaxial with the forming hole 231 of the blanking die 23 and are adapted to the diameter. Specifically, the fixed module 2 includes a fixed mold base 22 and a recessed plate 21 that are stacked and fixedly arranged. The recessed plate 21 is located on the side close to the moving mold structure. The recessed plate 21 has a third mounting hole for embedding and installing the blanking die 23. Its structural arrangement makes the blanking fit with the moving mold structure more reasonable.

[0031] In this embodiment, the blanking forming end of the blanking punch 13 and the forming hole 231 of the blanking die 23 are both adapted to the shape of the motor iron chip. The guiding end 141 of the central guide block 14 is adapted to the shaft hole already formed on the motor iron chip. The forming hole 231 of the blanking die 23 is circular. The blanking forming end of the blanking punch 13 and the guiding end 141 of the central guide block 14 are both circular.

Claims

1. A blanking die for motor iron chips with a blanking guide structure, characterized in that, include: The moving mold structure includes a movable module (1), a blanking punch (13), and a center guide block (14). The blanking punch (13) is installed in the first mounting hole (123) of the movable module (1). The blanking forming end of the blanking punch (13) protrudes from the unloading surface of the movable module (1). The center guide block (14) is installed in the second mounting hole (133) at the center position of the blanking punch (13). The guiding end (141) of the center guide block (14) is provided protruding from the forming surface of the blanking punch (13). The fixed mold structure includes a fixed module (2) and a blanking die (23). The fixed module (2) is provided with a blanking channel. The blanking die (23) is installed in the third mounting hole of the fixed module (2). The blanking punch (13) and the blanking channel are both coaxial with and have the same diameter as the forming hole (231) of the blanking die (23). The blanking forming end shape of the blanking punch (13) and the forming hole (231) shape of the blanking die (23) are both adapted to the shape of the motor iron chip, and the guiding end (141) shape of the center guiding block (14) is adapted to the shaft hole already formed on the motor iron chip.

2. The blanking die for motor iron chips with blanking guidance structure according to claim 1, characterized in that, The guiding end (141) of the central guiding block (14) is a frustum structure with an upper diameter larger than a lower diameter.

3. The blanking die for motor iron chips with a blanking guide structure according to claim 2, characterized in that, The edge of the guiding end (141) of the central guiding block (14) is rounded or beveled.

4. The blanking die for motor iron chips with a blanking guide structure according to any one of claims 1-3, characterized in that, The blanking punch (13) has a guide hole (134) at its center that communicates with the second mounting hole (133). The movable module (1) has an assembly hole (111) coaxially arranged with the guide hole (134) and a guide cavity (19) located below the assembly hole (111). A movable pad (10) is movably arranged in the guide cavity (19). A guide block (15) is arranged in the guide hole (134). The two ends of the guide block (15) are respectively connected to the center guide block (14) and the movable pad (10). The assembly hole (111) is fixedly connected and a support spring (16) is provided inside the assembly hole (111). The two ends of the support spring (16) abut against the inner wall of the end of the movable pad (10) and the assembly hole (111), respectively. Alternatively, a spring pad (17) is fixed on the movable pad (10) and inserted into the assembly hole (111). The two ends of the support spring (16) abut against the end face of the spring pad (17) and the inner wall of the end of the assembly hole (111), respectively, so that the guiding end (141) of the center guide block (14) remains elastically protruding on the forming surface of the blanking punch (13).

5. The blanking die for motor iron chips with a blanking guide structure according to claim 4, characterized in that, The movable module (1) includes a movable mold base (11) and an unloading assembly (12). The movable mold base (11) and the unloading assembly (12) are parallel to each other and spaced apart to form an active space. A first mounting hole (123) is formed on the unloading assembly (12), and an assembly hole (111) is formed on the movable mold base (11). The blanking punch (13) has a T-shaped structure, and its longitudinal part (131) and transverse part (132) are located in the first mounting hole (123) and the active space, respectively. The transverse part (132) of the die (13) is fixed on the moving die base (11), and the transverse part (132) of the blanking punch (13) and the opposite side of the moving die base (11) form a recess (112). The two recesses (112) are joined together to form a guide cavity (19). The transverse part (132) of the blanking punch (13) is also provided with at least one guide hole. A height equalizer (18) is inserted in the guide hole. One end of the height equalizer (18) is fixedly connected to the movable pad (10). In the closed state, the other end of the equal height block (18) of the moving mold structure and the fixed mold structure abuts against the side of the unloading group (12) facing the moving mold base (11), and there is a gap between the upper and lower sides of the movable pad (10) and the upper and lower inner walls of the guide cavity (19), respectively. The blanking forming end of the blanking punch (13) protrudes from the unloading surface of the movable module (1) and is adapted to the forming hole (231) of the blanking die (23). In the open mold state, there is a gap between the other end of the equal height block (18) and the side of the unloading group (12) facing the moving mold base (11), and there is a gap between the upper side of the movable pad (10) and the upper inner wall of the guide cavity (19). The blanking forming end of the blanking punch (13) retracts into the first mounting hole (123).

6. The blanking die for motor iron chips with a blanking guide structure according to claim 5, characterized in that, The unloading assembly (12) has a height equalization block (125) embedded and fixed on the side facing the moving mold base (11), and the position of the height equalization block (125) corresponds to the height equalization block (18).

7. The blanking die for motor iron chips with a blanking guide structure according to claim 6, characterized in that, The unloading assembly (12) forms a recess (124) that is adapted to the transverse portion (132) of the unloading punch (13), and the equal height pad (125) is embedded and fixed in the bottom inner wall of the recess (124).

8. The blanking die for motor iron chips with a blanking guide structure according to claim 7, characterized in that, The unloading assembly (12) includes an unloading seat (121) and an unloading plate (122) that are stacked and fixedly arranged on each other. The unloading seat (121) is located on the side close to the moving mold base (11), and the unloading plate (122) is located on the side close to the fixed mold structure. A recess (124) is formed on the side of the unloading seat (121) facing the moving mold base (11).

9. The blanking die for motor iron chips with a blanking guide structure according to claim 8, characterized in that, The blanking forming end of the blanking punch (13) and the guiding end (141) of the center guiding block (14) are both circular.

10. The motor iron chip blanking die with blanking guide structure according to claim 1 or 9, characterized in that, The fixed module (2) includes a fixed mold base (22) and a recessed plate (21) that are stacked and fixedly arranged on each other. The recessed plate (21) is located on the side close to the moving mold structure. A third mounting hole for embedding and installing the blanking die (23) is formed on the recessed plate (21). The forming hole (231) of the blanking die (23) is circular.

Images