Motor shell stamping die

Abstract

The invention belongs to the technical field of intelligent manufacturing dies, and particularly relates to a motor shell stamping die which comprises an upper die block and a lower die block, an auxiliary cavity is further formed in the upper die block and communicates with a die block cavity, and a demolding auxiliary assembly is installed in the auxiliary cavity. The demolding auxiliary assembly comprises a piston strip slidably installed in the upper die block and a rack fixedly installed on one side of the piston strip, the side edge of the rack is in meshed connection with a driven gear, and the lower portion of the driven gear is connected with an eccentric component through a shaft. The gas acts on one end of the piston strip, the piston strip is pushed by the gas to move, at the moment, the rack moves and drives the eccentric component to rotate, the rotating eccentric component knocks the upper mold through an eccentric structure, then the upper mold generates slight vibration, and the motor forming shell can be separated from the upper mold and the lower mold.

Description

Technical Field

[0001] The present invention belongs to the field of intelligent manufacturing molds, and specifically relates to a stamping mold for a motor housing. Background Art

[0002] As a key component in the motor structure, the manufacturing precision of the motor housing plays a decisive role in the overall performance and durability of the motor. Given the usually large production demand for such parts, if traditional machining techniques are relied on, not only will the production cost and material consumption increase, but it will also be difficult to achieve precise machining of complex shapes and internal cavities. Therefore, currently, the motor housing is usually manufactured by stamping it out with a stamping mold. By moving the upper module of the stamping mold downward, the metal plate is stamped in cooperation with the lower module. After the action of multiple stamping molds, the metal plate gradually forms the motor housing.

[0003] A patent document with the publication number CN111468659A discloses a forming mold for a motor housing, which includes a stamping part and a die part. The die part includes a lower die base, a lower backing plate, a die fixing ring, a die, a knockout rod, and a lower punch. The die fixing ring, the lower backing plate, and the lower die base are stacked in sequence. The die is located within the die fixing ring. The knockout rod penetrates through the central positions of the lower die base and the lower backing plate. The lower punch is located within the die. The stamping part includes a punch fixing plate, an upper backing plate, an upper die base, an upper filling block, and an upper punch. The upper die base, the upper backing plate, and the punch fixing plate are stacked in sequence. The upper filling block is placed at the central position of the upper die base and the upper backing plate. A circular groove is formed at the center of the punch fixing plate, and the upper punch is inserted into the circular groove of the punch fixing plate.

[0004] In the above technical solution, the upper die presses downward and cooperates with the lower module to form the motor housing after the metal plate is stamped time after time. However, in the traditional technical solution when manufacturing the motor housing, the upper die contacts the lower module, and the motor housing is tightly stamped between the two. At this time, the stamped housing fits tightly with the inside of the mold, resulting in difficult demolding and production defects, and unable to achieve the effect of intelligent manufacturing.

[0005] Therefore, the present invention provides a stamping mold for a motor housing. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A stamping die for a motor housing of the present invention includes an upper module and a lower module located directly below the upper module. A metal plate to be stamped is placed inside the lower module, and the metal plate to be stamped forms a motor forming shell after being stamped. Both the upper module and the lower module are movably installed inside a stamping table. A plurality of die guide columns are fixedly installed inside the stamping table. A module cavity is formed inside the upper module. An upper die is movably installed inside the module cavity. A telescopic column is fixedly installed inside the module cavity. One end of the telescopic column is fixedly connected to the top of the upper die. A first compression spring is installed outside the telescopic column. One end of the first compression spring is fixedly connected to the lower end of the telescopic column, and the other end of the first compression spring is fixedly connected to the top of the upper die; An auxiliary cavity is further formed inside the upper module. The auxiliary cavity is communicated with the module cavity. A demoulding auxiliary component is installed inside the auxiliary cavity. The demoulding auxiliary component includes a piston strip slidably installed inside the upper module and a rack fixedly installed on one side of the piston strip. A driven gear is meshed on the side of the rack. An eccentric member is connected to the lower part of the driven gear through a shaft. One end of the rack is fixedly connected to a connecting spring, and the connecting spring is fixedly connected to the inner wall of the upper module.

[0008] Preferably, the eccentric member includes a rotating block connected to the driven gear through a shaft. An eccentric block is movably installed on one side of the rotating block. A plurality of spring guide columns are movably installed between the eccentric block and the rotating block.

[0009] Preferably, a communicating air pipe is fixedly installed on the side of the upper module. A first limiting strip and a second limiting strip are fixedly installed inside the upper module. The piston strip slides inside the first limiting strip, and the rack slides inside the second limiting strip. The second limiting strip is open towards the side of the driven gear.

[0010] Preferably, the die guide column includes an upper guide column and a lower guide column installed inside the stamping table. The upper guide column and the lower guide column are on the same vertical axis. A connecting air pipe is fixedly installed at the upper end of the upper guide column, and the connecting air pipe is connected to the communicating air pipe.

[0011] Preferably, the lower guide column includes a fixed column and a lifting member slidably installed outside the fixed column. A limiting disc is fixedly installed at the upper end of the fixed column, and the limiting disc is used to prevent the lifting member from detaching. A second compression spring is fixedly installed on the lower side of the lifting member, and one end of the second compression spring is fixedly connected to the inside of the stamping table.

[0012] Preferably, a lifting ring is fixedly installed at the bottom of the lifting member. A first annular airbag is fixedly installed inside the lifting ring. A plurality of telescopic air pipes are installed inside the lifting member. One end of the telescopic air pipe is located inside the lifting ring, and one end of the telescopic air pipe is communicated with the first annular airbag.

[0013] Preferably, a plurality of hidden strip grooves are formed inside the fixed column. The plurality of telescopic air pipes are installed inside the corresponding hidden strip grooves.

[0014] Preferably, a second annular airbag is fixedly installed inside the limit disc. An air outlet pipe is also fixedly installed inside the limit disc. The second annular airbag is communicated with one end of the telescopic air pipe. An air supply device is fixedly installed inside the fixed column. The air supply device is connected to the air outlet pipe.

[0015] Preferably, a fitting groove is formed inside the upper guide post. The diameter of the fitting groove is larger than the diameter of the limit disc, and the diameter of the fitting groove is smaller than the diameter of the lifting ring.

[0016] Preferably, the end of the connecting air pipe is located inside the fitting groove. The connecting air pipe and the air outlet pipe are on the same vertical axis.

[0017] The beneficial effects of the present invention are as follows: 1. For a motor housing stamping die of the present invention, through the cooperation of the upper die and the lower module, a motor forming shell is stamped out. At this time, the motor forming shell is in close contact with the upper die and the lower module, and it is not easy to demold. By inputting gas into the upper module, this gas acts on one end of the piston bar, causing the piston bar slidably installed inside the upper module to be pushed by the gas and move. That is, at this time, the rack moves, and the connecting spring is compressed. When the rack moves, it drives the driven gear to rotate. The rotation of the driven gear drives the eccentric member to rotate. The rotating eccentric member will knock on the upper die through the eccentric structure, thereby causing the upper die to vibrate slightly, which is beneficial for the motor forming shell to separate from the upper die and the lower module.

[0018] 2. For a motor housing stamping die of the present invention, the movement of the rack drives the driven gear to rotate. The rotating driven gear drives the rotating block and the eccentric block to rotate. When the spring guide post is in the natural state, the rotation of the rotating block will cause the eccentric block to contact the side of the upper die that has risen to the limit position, thereby generating a knock. When the rotating block continues to rotate, the spring provided by the spring guide post will be compressed, causing the eccentric block to move towards the rotating block, facilitating the continuous rotation of the rotating block. The continuous rotation of the rotating block will cause the eccentric block to continuously knock on the upper die, thereby causing a slight vibration effect on the upper die. The vibration of the upper die will drive the motor forming shell to vibrate, causing the motor forming shell to separate from the lower module and also facilitating the separation of the motor forming shell from the upper die.

[0019] 3. When the stamping die for the motor housing according to the present invention performs stamping work by pressing down the upper module, the upper guide post will also descend. During the descent of the upper guide post, the bottom of the upper guide post will contact the bottom end of the lifting member, thereby driving the lifting member to descend outside the fixed column and compressing the second compression spring at this time. During the stamping step, the lower guide post slides inside the upper guide post to play a guiding role and avoid the situation of position deviation when the upper module descends. After stamping is completed, the upper module needs to rise. Under the action of the restoring force, the compressed second compression spring will exert an upward force on the upper module to assist the subsequent rising step of the upper module. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is an overall three-dimensional view of the present invention; Figure 2 is a schematic diagram of the second state of the whole of the present invention; Figure 3 is a front view plane schematic diagram of the upper module in the present invention; Figure 4 is a three-dimensional schematic diagram of the demoulding auxiliary component in the present invention; Figure 5 is a three-dimensional schematic diagram of the first limiting strip and the second limiting strip in the present invention; Figure 6 is a three-dimensional schematic diagram of the lower guide post in the present invention; Figure 7 is a three-dimensional schematic diagram of the second state of the lower guide post in the present invention; Figure 8 is a three-dimensional schematic diagram of the lifting member in the present invention; Figure 9 is a three-dimensional schematic diagram of the limiting disc and the fixed column in the present invention; Figure 10 is a three-dimensional schematic diagram of the upper guide post in the present invention.

[0022] In the figure: 1, stamping table; 2, upper module; 21, module cavity; 22, telescopic column; 23, first compression spring; 24, upper die; 25, auxiliary cavity; 26, connecting air pipe; 27, first limiting strip; 28, second limiting strip; 3, die guide post; 4, lower module; 5, motor forming shell; 6, upper guide post; 61, connecting air pipe; 62, mating groove; 7, lower guide post; 71, limiting disc; 711, second annular airbag; 712, air outlet pipe; 72, lifting member; 721, lifting ring; 722, first annular airbag; 723, telescopic air pipe; 73, fixed column; 731, hidden strip groove; 74, second compression spring; 8, demoulding auxiliary component; 81, piston strip; 82, rack; 83, driven gear; 84, eccentric member; 841, rotating block; 842, eccentric block; 843, spring guide post; 85, connecting spring. Detailed implementation manners

[0023] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0024] Example 1: As Figure 1-4 shown, a stamping die for a motor housing according to an embodiment of the present invention includes an upper module 2 and a lower module 4 located directly below the upper module 2. A metal plate to be stamped is placed inside the lower module 4, and the metal plate to be stamped forms a motor forming shell 5 after being stamped. Both the upper module 2 and the lower module 4 are movably installed inside a stamping table 1. A plurality of die guide posts 3 are fixedly installed inside the stamping table 1. A module cavity 21 is opened inside the upper module 2. An upper die 24 is movably installed inside the module cavity 21. A telescopic column 22 is fixedly installed inside the module cavity 21. One end of the telescopic column 22 is fixedly connected to the top of the upper die 24. A first compression spring 23 is installed outside the telescopic column 22. One end of the first compression spring 23 is fixedly connected to the lower end of the telescopic column 22, and the other end of the first compression spring 23 is fixedly connected to the top of the upper die 24; An auxiliary cavity 25 is further opened inside the upper module 2. The auxiliary cavity 25 is communicated with the module cavity 21. A demoulding auxiliary component 8 is installed inside the auxiliary cavity 25. The demoulding auxiliary component 8 includes a piston strip 81 slidably installed inside the upper module 2 and a rack 82 fixedly installed on one side of the piston strip 81. A driven gear 83 is meshed on the side of the rack 82. An eccentric member 84 is connected to the lower part of the driven gear 83 through a shaft. One end of the rack 82 is fixedly connected to a connecting spring 85, and the connecting spring 85 is fixedly connected to the inner wall of the upper module 2.

[0025] Specifically, in the traditional technical solution, the metal plate needs to be stamped multiple times to form. After each stamping, the metal plate is conveyed into the interior of the stamping table 1. The stamping inside the stamping table 1 is the last stamping. At this time, the metal plate is placed inside the lower module 4. With the die guide post 3 as the guiding structure, the upper module 2 descends until the upper die 24 contacts the die on the lower module 4, and the metal plate to be stamped is stamped. As the upper module 2 continues to descend, according to the compression stamping method, when the two dies initially contact the stamped part, through the compression of the upper die spring guide post above, the upper die continuously and powerfully stamps the stamped part again. This is the traditional stamping method. Therefore, the upper die 24 rises inside the module cavity 21. At this time, the telescopic column 22 serves as the guiding structure, and the first compression spring 23 is compressed. When the upper die 24 rises to the limit position inside the module cavity 21, with the cooperation of the upper die 24 and the lower module 4, the stamping of the metal plate is completed. At this time, the metal plate is formed into the motor forming shell 5. At this time, the motor forming shell 5 fits tightly with the upper die 24 and the lower module 4 and is not easy to be demolded. By pushing the piston bar 81 slidably installed inside the upper module 2 to move, that is, at this time, the rack 82 moves from the initial position, and the connecting spring 85 is compressed. When the rack 82 moves, it will drive the driven gear 83 to rotate. The rotation of the driven gear 83 drives the eccentric member 84 to rotate. The movement of the rack 82 can drive the driven gear 83 to rotate several circles. In the initial state, the eccentric structure of the eccentric member 84 does not contact the upper die 24. After rotation, the eccentric member 84 will strike the upper die 24 multiple times through the eccentric structure, thereby causing the upper die 24 to vibrate slightly. After no longer applying a driving force to the rack 82, the restored connecting spring 85 will drive the rack 82 back to the initial position, causing the eccentric member 84 to rotate again and strike the upper die 24 multiple times again, which is beneficial for the motor forming shell 5 to separate from the upper die 24 and the lower module 4, improving the problem that after stamping and forming the motor forming shell 5, it is not easy to be demolded because the motor forming shell 5 fits tightly with the upper die 24 and the lower module 4, and achieving the effect of intelligent manufacturing.

[0026] As Figure 4 shown, the eccentric member 84 includes a rotating block 841 connected to the driven gear 83 through a shaft. An eccentric block 842 is movably installed on one side of the rotating block 841. A plurality of spring guide posts 843 are movably installed between the eccentric block 842 and the rotating block 841.

[0027] Specifically, the movement of the rack 82 drives the driven gear 83 to rotate. The rotating driven gear 83 drives the rotating block 841 and the eccentric block 842 to rotate. When the spring guide post 843 is in its natural state, the rotation of the rotating block 841 causes the eccentric block 842 to contact the side of the upper mold 24 that has risen to the limit position, thereby generating a knock. When the rotating block 841 continues to rotate, the spring provided by the spring guide post 843 will be compressed, causing the eccentric block 842 to move towards the rotating block 841, facilitating the continuous rotation of the rotating block 841. The continuous rotation of the rotating block 841 causes the eccentric block 842 to continuously knock on the upper mold 24, thereby generating a slight vibration effect on the upper mold 24. The vibration of the upper mold 24 drives the motor forming shell 5 to vibrate, causing the motor forming shell 5 to disengage from the lower module 4 and also facilitating the disengagement of the motor forming shell 5 from the upper mold 24.

[0028] As Figure 5 shown, a connecting air pipe 26 is fixedly installed on the side of the upper module 2. A first limiting strip 27 and a second limiting strip 28 are fixedly installed inside the upper module 2. The piston strip 81 slides inside the first limiting strip 27, and the rack 82 slides inside the second limiting strip 28. The second limiting strip 28 is open on the side facing the driven gear 83.

[0029] Specifically, the gas is conveyed in through the upper mold 24. The gas enters inside the first limiting strip 27, thereby pushing the piston strip 81 located inside the first limiting strip 27 to slide. At this time, the rack 82 will slide inside the second limiting strip 28, and the sliding rack 82 drives the driven gear 83 to rotate to complete the subsequent demolding work.

[0030] As Figure 6-7 shown, the mold guide post 3 includes an upper guide post 6 and a lower guide post 7 installed inside the stamping table 1. The upper guide post 6 and the lower guide post 7 are on the same vertical axis. A connecting air pipe 61 is fixedly installed at the upper end of the upper guide post 6, and the connecting air pipe 61 is connected to the connecting air pipe 26. The lower guide post 7 includes a fixed column 73 and a lifting member 72 slidably installed outside the fixed column 73. A limiting disk 71 is fixedly installed at the upper end of the fixed column 73. The limiting disk 71 is used to prevent the lifting member 72 from detaching. A second compression spring 74 is fixedly installed on the lower side of the lifting member 72, and one end of the second compression spring 74 is fixedly connected to the inside of the stamping table 1.

[0031] Specifically, when the upper module 2 presses down for stamping work, the upper guide post 6 will also descend. During the descent of the upper guide post 6, the bottom of the upper guide post 6 will contact the bottom end of the lifting member 72, thereby driving the lifting member 72 to descend outside the fixed column 73 and compressing the second compression spring 74 at this time. During the stamping step, the lower guide post 7 slides inside the upper guide post 6, which can play a guiding role to prevent the upper module 2 from shifting in position when descending. After stamping is completed, the upper module 2 needs to rise. Under the action of the restoring force, the compressed second compression spring 74 will exert an upward force on the upper module 2 to assist the subsequent rising step of the upper module 2.

[0032] Embodiment 2: As Figure 8-10 shown, compared with Embodiment 1, another implementation manner of the present invention is as follows: A lifting ring 721 is fixedly installed at the bottom of the lifting member 72, a first annular airbag 722 is fixedly installed inside the lifting ring 721, and a plurality of telescopic air pipes 723 are installed inside the lifting member 72. One end of the telescopic air pipe 723 is located inside the lifting ring 721, and one end of the telescopic air pipe 723 is communicated with the first annular airbag 722. A plurality of hidden grooves 731 are formed inside the fixed column 73, and the plurality of telescopic air pipes 723 are installed inside the corresponding hidden grooves 731.

[0033] A second annular airbag 711 is fixedly installed inside the limit disk 71, and an air outlet pipe 712 is also fixedly installed inside the limit disk 71. The second annular airbag 711 is communicated with one end of the telescopic air pipe 723. A gas supply device is fixedly installed inside the fixed column 73, and the gas supply device is connected to the air outlet pipe 712 A mating groove 62 is formed inside the upper guide post 6. The diameter of the mating groove 62 is larger than the diameter of the limit disk 71, and the diameter of the mating groove 62 is smaller than the diameter of the lifting ring 721. The end of the connecting air pipe 61 is located inside the mating groove 62, and the connecting air pipe 61 and the air outlet pipe 712 are on the same vertical axis.

[0034] Specifically, when the upper module 2 descends, the upper guide post 6 will also descend accordingly. At this time, the limit disc 71 and the upper end of the lifting member 72 will be inside the fitting groove 62. When the end of the upper guide post 6 contacts the lifting ring 721, it will drive the lifting member 72 to descend. At this time, the second compression spring 74 is compressed, and the plurality of telescopic air pipes 723 are stretched. However, the telescopic air pipes 723 are always limited inside the hidden strip groove 731 and will not affect the lifting of the lifting member 72. After the lifting member 72 descends to the limit position, the continuous descent of the upper guide post 6 will cause the end of the upper guide post 6 to squeeze the first annular airbag 722 of the protruding part. The gas inside the first annular airbag 722 is transported to the inside of the second annular airbag 711 through the plurality of telescopic air pipes 723, causing the second annular airbag 711 to inflate and expand. The inflated second annular airbag 711 is in close contact with the inner wall of the fitting groove 62. By supplying gas to the inside of the air outlet pipe 712 through a gas supply device, the gas will enter the connecting air pipe 61 through the air outlet pipe 712. At this time, the inflated second annular airbag 711 can prevent gas leakage at the contact position between the air outlet pipe 712 and the connecting air pipe 61. The gas enters the first limiting strip 27 through the connecting air pipe 61 and the communicating air pipe 26, and then pushes the piston strip 81 to slide. Through the transmission of gas, the eccentric member 84 plays a role, thereby facilitating the demolding of the motor forming shell 5. After the stamping work is completed, the upper module 2 rises, driving the upper guide post 6 to rise. At this time, the upper mold 24 still contacts the lower module 4, and the motor forming shell 5 is between the lower module 4 and the upper mold 24. When the upper guide post 6 rises, there will be a gap between the connecting air pipe 61 and the air outlet pipe 712. The gas inside the first limiting strip 27 will be released through the communicating air pipe 26 and the connecting air pipe 61. Under the restoring force of the connecting spring 85, the rack 82 and the piston strip 81 move towards the communicating air pipe 26, driving the driven gear 83 and the rotating block 841 to rotate again, and knocking on the upper mold 24 again. The secondary knocking effectively improves the demolding effect of the motor forming shell 5. And in this process, there is no need for the gas supply device to supply gas again, that is, only one supply of gas is required to complete the two demolding assistance operations for the motor forming shell 5, avoiding the subsequent situation where the motor forming shell 5 is not easily demolded.

[0035] Working principle: After the metal plate is stamped time after time, it is conveyed to the inside of the stamping table 1. At this time, the metal plate is placed inside the lower module 4. Guided by the die guide post 3, the upper module 2 descends until the upper die 24 contacts the die on the lower module 4, and the metal plate to be stamped is stamped. As the upper module 2 continues to descend, the upper die 24 rises inside the module cavity 21. At this time, the telescopic column 22 serves as a guiding structure, and the first compression spring 23 is compressed. When the upper die 24 rises to the limit position inside the module cavity 21, with the cooperation of the upper die 24 and the lower module 4, the stamping of the metal plate is completed. At this time, the metal plate is formed into the motor forming shell 5. At this time, the motor forming shell 5 fits tightly with the upper die 24 and the lower module 4 and is not easy to be demolded. By inputting gas into the upper module 2, this gas acts on one end of the piston bar 81, causing the piston bar 81 slidably installed inside the upper module 2 to be pushed by the gas and move. That is, at this time, the rack 82 moves, and the connecting spring 85 is compressed. When the rack 82 moves, it drives the driven gear 83 to rotate. The rotation of the driven gear 83 drives the eccentric member 84 to rotate. The rotating eccentric member 84 knocks on the upper die 24 through the eccentric structure, thereby causing the upper die 24 to vibrate slightly, which is beneficial to the motor forming shell 5 to separate from the upper die 24 and the lower module 4, avoiding the situation that after the motor forming shell 5 is stamped and formed, it is not easy to be demolded because the motor forming shell 5 fits tightly with the upper die 24 and the lower module 4.

[0036] When the upper module 2 descends, the upper guide post 6 also descends accordingly. At this time, the limit disc 71 and the upper end of the lifting member 72 will be inside the fitting groove 62. When the end of the upper guide post 6 contacts the lifting ring 721, it will drive the lifting member 72 to descend. At this time, the second compression spring 74 is compressed, and multiple telescopic air pipes 723 are stretched. However, the telescopic air pipes 723 are always limited inside the hidden strip groove 731 and will not affect the lifting of the lifting member 72. After the lifting member 72 descends to the limit position, the continuous descent of the upper guide post 6 will cause the end of the upper guide post 6 to squeeze the first annular airbag 722 of the protruding part. The gas inside the first annular airbag 722 is transported through multiple telescopic air pipes 723 to the inside of the second annular airbag 711, causing the second annular airbag 711 to inflate and expand. The inflated second annular airbag 711 is in close contact with the inner wall of the fitting groove 62. The gas supply device supplies gas into the air outlet pipe 712, and the gas will enter the connecting air pipe 61 through the air outlet pipe 712. At this time, the inflated second annular airbag 711 can prevent gas leakage at the contact position between the air outlet pipe 712 and the connecting air pipe 61. The gas enters the first limit strip 27 through the connecting air pipe 61 and the communicating air pipe 26, thereby pushing the piston strip 81 to slide. Through the transmission of gas, the eccentric member 84 plays a role, thereby facilitating the demolding of the motor forming shell 5. After the stamping work is completed, the upper module 2 rises, driving the upper guide post 6 to rise. At this time, the upper mold 24 still contacts the lower module 4, and the motor forming shell 5 is between the lower module 4 and the upper mold 24. When the upper guide post 6 rises, there will be a gap between the connecting air pipe 61 and the air outlet pipe 712, and the gas inside the first limit strip 27 will be released through the communicating air pipe 26 and the connecting air pipe 61. Under the restoring force of the connecting spring 85, the rack 82 and the piston strip 81 move towards the communicating air pipe 26, driving the driven gear 83 and the rotating block 841 to rotate again, and knocking on the upper mold 24 again. The secondary knocking effectively improves the demolding effect of the motor forming shell 5, and in this process, it is not necessary for the gas supply device to supply gas again, that is, only one supply of gas is required to complete the two demolding assistance operations for the motor forming shell 5, avoiding the subsequent situation where the motor forming shell 5 is not easily demolded.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A stamping die for a motor housing, comprising an upper module (2) and a lower module (4) located directly below the upper module (2), wherein a metal plate to be stamped is placed inside the lower module (4), and the metal plate to be stamped forms a motor molded housing (5) after being stamped, wherein the upper module (2) and the lower module (4) are both movably mounted inside a stamping table (1), wherein a plurality of die guide pillars (3) are fixedly mounted inside the stamping table (1), wherein a module cavity (21) is provided inside the upper module (2), and an upper die (24) is movably mounted inside the module cavity (21), wherein: A telescopic column (22) is fixedly installed inside the module cavity (21), one end of the telescopic column (22) is fixedly connected to the top of the upper mold (24), a first compression spring (23) is installed on the outside of the telescopic column (22), one end of the first compression spring (23) is fixedly connected to the lower end of the telescopic column (22), and the other end of the first compression spring (23) is fixedly connected to the top of the upper mold (24); The upper module (2) is further provided with an auxiliary cavity (25) in the interior thereof, the auxiliary cavity (25) being in communication with the module cavity (21), a demoulding auxiliary component (8) being installed in the interior thereof, the demoulding auxiliary component (8) comprising a piston bar (81) slidably installed in the interior of the upper module (2) and a rack (82) fixedly installed on one side of the piston bar (81), a driven gear (83) being meshingly connected to the side of the rack (82), an eccentric member (84) being connected to the lower side of the driven gear (83) via a shaft, one end of the rack (82) being fixedly connected to a connecting spring (85), the connecting spring (85) being fixedly connected to the inner wall of the upper module (2).

2. The motor housing stamping die according to claim 1, characterized in that: The eccentric component (84) comprises a rotating block (841) connected to the driven gear (83) via a shaft, an eccentric block (842) being movably mounted on one side of the rotating block (841), and a plurality of spring guide columns (843) being movably mounted between the eccentric block (842) and the rotating block (841).

3. The motor housing stamping die according to claim 2, characterized in that: A communicating air pipe (26) is fixedly mounted on the side of the upper module (2), a first limiting strip (27) and a second limiting strip (28) are fixedly mounted inside the upper module (2), the piston strip (81) slides inside the first limiting strip (27), the rack (82) slides inside the second limiting strip (28), and the second limiting strip (28) is arranged with an opening on one side facing the driven gear (83).

4. The motor housing stamping die according to claim 3, characterized in that: The mold guide column (3) comprises an upper guide column (6) and a lower guide column (7) installed inside the punching platform (1), the upper guide column (6) and the lower guide column (7) are located on the same vertical axis, and a connecting air pipe (61) is fixedly installed on the upper end of the upper guide column (6), and the connecting air pipe (61) is connected to the connecting air pipe (26).

5. The motor housing stamping die according to claim 4, characterized in that: The lower guide column (7) comprises a fixed column (73) and a lifting member (72) slidably mounted on the outside of the fixed column (73); a limit plate (71) is fixedly mounted on the upper end of the fixed column (73); the limit plate (71) is used to prevent the lifting member (72) from detaching; a second compression spring (74) is fixedly mounted on the lower side of the lifting member (72); one end of the second compression spring (74) is fixedly connected to the inside of the punching table (1).

6. The motor housing stamping die according to claim 5, characterized in that: A lifting ring (721) is fixedly mounted on the bottom of the lifting component (72), a first annular airbag (722) is fixedly mounted inside the lifting ring (721), a plurality of telescopic air tubes (723) are mounted inside the lifting component (72), one end of the telescopic air tube (723) is located inside the lifting ring (721), and one end of the telescopic air tube (723) is connected to the first annular airbag (722).

7. The motor housing stamping die according to claim 6, characterized in that: A plurality of hidden slots (731) are provided inside the fixing column (73), and a plurality of the telescopic air pipes (723) are installed inside corresponding hidden slots (731).

8. The motor housing stamping die according to claim 6, characterized in that: A second annular airbag (711) is fixedly mounted inside the limiting plate (71), an air outlet pipe (712) is also fixedly mounted inside the limiting plate (71), the second annular airbag (711) is connected to one end of the telescopic air pipe (723), and an air supply device is fixedly mounted inside the fixing column (73), the air supply device is connected to the air outlet pipe (712).

9. The stamping die for a motor housing according to claim 8, characterized in that: A matching groove (62) is provided inside the upper guide column (6), the diameter of the matching groove (62) is larger than the diameter of the limiting plate (71), and the diameter of the matching groove (62) is smaller than the diameter of the lifting ring (721).

10. The motor housing stamping die according to claim 9, characterized in that: The end of the connecting air pipe (61) is located inside the matching groove (62), and the connecting air pipe (61) and the air outlet pipe (712) are located on the same vertical axis.

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