Continuous stamping die for machining automobile motor parts

Abstract

The utility model relates to the technical field of stamping dies, in particular to a continuous stamping die for machining automobile motor parts, which comprises a lower die plate, an upper die plate, a piston tube and a piston rod, a lower die holder is in threaded connection with the outer wall of the upper end of the lower die plate, and the upper die plate is arranged on the outer wall of the upper end of the lower die plate. Piston pipes are arranged on the outer walls of the two sides of the lower mold plate, air inlet pipes are in threaded connection with the outer walls of the lower ends of the piston pipes, piston rods are movably installed in the piston pipes, air storage covers are welded to the outer walls of the upper ends of the piston rods, and pressure release valves used for exhausting air are installed on the outer walls of the air storage covers in an inserted mode; and the pressure release valve is used for discharging and releasing pressure of gas in the gas storage cover and enabling the gas to impact the interior of the die cavity of the lower die base through the ventilation flow channel, so that residual metal powder on the inner wall of the die cavity is blown out, the relative cleanliness of the interior of the die cavity is kept, and the punch forming precision of a workpiece is ensured.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, specifically to a continuous stamping die for processing automotive motor parts. Background Technology

[0002] Automotive motor components mainly include mechanical parts, electromagnetic parts, and electronic control parts. Among the electromagnetic parts are stator cores, stator windings, rotor cores, rotor windings, and permanent magnets. The stator core is usually made of silicon steel sheets with a thickness of 0.35-0.5 mm, which are stamped and stacked. The surface has an insulating layer. The inner circle of the core has evenly distributed slots for embedding the stator windings. The silicon steel sheets are usually stamped and formed by stamping dies during the manufacturing process.

[0003] Continuous stamping dies for automotive motor parts are high-efficiency, precision dies used for continuous stamping of silicon steel sheets in automotive motor parts. Their structure consists of an upper die holder and a lower die holder. The upper die holder secures other upper die parts and connects to the slide block of the stamping equipment, moving up and down with the slide block during stamping. The backing plate primarily bears the pressure from the punch, preventing damage to the upper die holder. The punch fixing plate secures the punch, ensuring its positional accuracy. The punch is the part that directly stamps the material; its shape and dimensions are designed according to the specific stamping process requirements of the parts. The lower die holder is the foundation part of the lower die, supporting and securing other lower die parts and mounted on the worktable of the stamping equipment. The die cavity works in conjunction with the punch to complete the stamping operation. Its working surface forms a stamping cavity with the punch, where the material is stamped and formed.

[0004] While existing stamping dies offer numerous advantages during use, they still suffer from several problems. Firstly, they are not sufficiently effective at cleaning the interior of the die cavity. As the strip reciprocates within the die, a significant amount of metal powder is shed. This metal powder reduces the precision of the strip's placement within the die cavity, thus impacting the stamping quality of the workpiece. Utility Model Content

[0005] To address the problems in the existing technology, this utility model provides a continuous stamping die for processing automotive motor parts.

[0006] The technical solution adopted by this utility model to solve its technical problem is a continuous stamping die for processing automotive motor parts, including a lower die plate, an upper die plate, a piston tube, and a piston rod. A lower die base is screwed to the upper outer wall of the lower die plate, and an upper die plate is provided on the upper outer wall of the lower die plate. Piston tubes are provided on both outer walls of the lower die plate, and an air inlet pipe is threaded to the lower outer wall of the piston tube. A piston rod is movably installed inside the piston tube, and an air storage cover is welded to the upper outer wall of the piston rod. A pressure relief valve for discharging gas is inserted and installed on the outer wall of the air storage cover.

[0007] By adopting the above technical solution, the strip material, after being restricted by the pad, can move within the mold cavity inside the lower mold base. The upper mold plate, through the connecting shaft, is vertically reciprocated by a hydraulic drive device, causing the die head to work in conjunction with the mold cavity to cyclically stamp the strip material, thus achieving the purpose of stamping and forming parts. The gas storage hood moves vertically along with the upper mold plate, and gas is delivered to the inside of the gas storage hood through the piston rod and piston tube. After the piston plate reciprocates three times, the gas pressure delivered to the inside of the gas storage hood reaches the set threshold of the pressure relief valve. Thus, during the mold closing process of the upper and lower mold plates, the gas inside the gas storage hood is discharged and depressurized through the pressure relief valve, and the gas impacts the inside of the mold cavity of the lower mold base through the air passage, causing the residual metal powder on the inner wall of the mold cavity to be blown out, maintaining the relative cleanliness of the inside of the mold cavity, and ensuring the stamping and forming accuracy of the workpiece.

[0008] Specifically, a pad is screwed to the upper outer wall of the lower mold base, and the pad has equidistant parallel air passages inside, and the air passages correspond to the position of the pressure relief valve.

[0009] By adopting the above technical solution, the design of the pad and the air passage allows the gas discharged from the pressure relief valve to flow orderly into the mold cavity inside the lower mold base through the air passage, thereby achieving the purpose of blowing away metal debris in the mold cavity of the lower mold base, keeping the stamping environment clean, ensuring the product molding quality, and reducing the defect rate.

[0010] Specifically, a mold head is screwed to the lower outer wall of the upper template, and the mold head is inserted into a pre-set mold cavity inside the lower mold base. A connecting shaft is screwed to the upper outer wall of the upper template, and guide rods that are equally spaced and parallel are screwed to the upper outer wall of the lower mold base. The upper template is movably installed on the outside of the guide rods.

[0011] By adopting the above technical solution, the cooperation between the die head and the die cavity is the key to realizing the stamping of parts, ensuring the shape and dimensional accuracy of the product. The connecting shaft facilitates the connection between the upper die plate and the matching hydraulic equipment, so that the hydraulic equipment can drive the upper die plate to move vertically back and forth. The guide rod provides precise guidance for the up and down movement of the upper die plate, ensuring that the upper die plate runs smoothly during stamping and that the die head is accurately inserted into the die cavity.

[0012] Specifically, the lower outer wall of the upper template is screwed with a rectangular array of extrusion rods. The extrusion rods are located at the upper end of the gas storage hood, and a protective pad is glued and fixed to the end of the extrusion rod facing the gas storage hood.

[0013] By adopting the above technical solution, during the stamping process, when the upper die moves downward, the extrusion rod can apply pressure to the gas storage hood, pushing the piston rod to move. The piston plate delivers gas to the inside of the gas storage hood through quick-connect fittings and rubber tubing, thereby increasing the gas pressure inside the gas storage hood. The protective pad can effectively buffer the rigid contact between the extrusion rod and the gas storage hood, preventing damage to the surface of the gas storage hood.

[0014] Specifically, quick-connect fittings are threaded to both sides of the lower end of the piston tube and both sides of the lower end of the gas storage cover. Rubber tubing is inserted into the quick-connect fittings, and the piston tube is connected to the inside of the gas storage cover through the rubber tubing and the quick-connect fittings. One-way valves are provided on the outer walls of the rubber tubing and the air inlet pipe.

[0015] By adopting the above technical solution, the quick-connect coupling enables the rapid assembly and disassembly of the rubber tubing. The length of the rubber tubing is greater than the distance between the lower and upper templates after they are unfolded, thus accommodating the reciprocating movement of the upper template. The one-way valve is used to control the unidirectional flow of gas, preventing backflow of gas from causing pressure instability. External gas enters the piston tube unidirectionally through the inlet pipe, while the gas inside the piston tube enters the gas storage hood unidirectionally through the rubber tubing.

[0016] Specifically, a piston plate is screwed to the lower outer wall of the piston rod. The piston plate is located in the piston tube. A sealing ring is bonded to the outer wall of the piston plate and contacts the inner wall of the piston tube. A spring is sleeved on the outer side of the piston rod. The upper and lower ends of the spring contact the upper outer wall of the piston tube and the lower outer wall of the gas storage cover, respectively. The gas storage cover is elastically connected to the piston tube through the spring.

[0017] By adopting the above technical solution, the cooperation between the piston plate and the sealing ring ensures the airtightness of the piston tube and prevents gas leakage. As the upper template moves, the piston plate can push the gas inside the piston tube out. When the upper template moves down and then moves up to reset, the spring force is released and pushes the gas storage cover to move up and reset with the upper template, preparing for the next gas storage.

[0018] Specifically, connectors are installed on both sides of the lower end of the outer wall of the piston tube, and the piston tube is connected to the upper end face of the lower template by screws through the connectors.

[0019] By adopting the above technical solution, the connectors and screws ensure that the piston tube is stably positioned on the upper end face of the lower template, ensuring that the piston tube can withstand the vibration and pressure during the stamping process, and facilitating the disassembly and maintenance of the piston tube by the staff.

[0020] The beneficial effects of this utility model are:

[0021] The present invention discloses a continuous stamping die for processing automotive motor parts. The upper die plate is vertically reciprocated by a hydraulic drive device connected to a connecting shaft, so that the die head and the die cavity cyclically stamp the strip material, thereby achieving the purpose of stamping and forming the parts.

[0022] The present invention discloses a continuous stamping die for processing automotive motor parts. The pressure relief valve discharges and relieves the pressure of the gas inside the gas storage hood, and the gas impacts the cavity of the lower die base through the air passage, causing the residual metal powder on the inner wall of the die cavity to be blown out, maintaining the relative cleanliness of the die cavity and ensuring the stamping accuracy of the workpiece. Attached Figure Description

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

[0024] Figure 1 This is a schematic diagram of the main body of the lower template structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the unfolded upper template structure of this utility model;

[0026] Figure 3 This is an exploded view of the lower mold base structure of this utility model;

[0027] Figure 4 This is an exploded view of the piston tube structure of this utility model;

[0028] Figure 5 This is a schematic diagram of the flipping structure of the gas storage hood of this utility model.

[0029] In the diagram: 1. Lower template; 11. Lower mold base; 12. Pad; 13. Guide rod; 14. Air passage; 2. Upper template; 21. Connecting shaft; 22. Die head; 23. Extrusion rod; 3. Piston tube; 31. Air inlet pipe; 32. One-way valve; 33. Connector; 34. Quick connector; 4. Piston rod; 41. Piston plate; 42. Air reservoir; 43. Spring; 44. Rubber hose; 45. Pressure relief valve. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0031] To save manpower and improve efficiency, as one embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the continuous stamping die for processing automotive motor parts of this utility model includes a lower die plate 1, an upper die plate 2, a piston tube 3, and a piston rod 4. A lower die base 11 is screwed to the upper outer wall of the lower die plate 1. The upper die plate 2 is provided on the upper outer wall of the lower die plate 1. Piston tubes 3 are provided on both outer walls of the lower die plate 1. An air inlet pipe 31 is threaded to the lower outer wall of the piston tube 3. A piston rod 4 is movably installed inside the piston tube 3. An air storage cover 42 is welded to the upper outer wall of the piston rod 4. A pressure relief valve 45 for discharging gas is inserted and installed on the outer wall of the air storage cover 42.

[0032] During use, the strip material, restricted by the pad 12, can move within the mold cavity of the lower mold base 11. The upper mold plate 2, via the connecting shaft 21, is vertically reciprocated by a hydraulic drive device, causing the die head 22 to work in conjunction with the mold cavity to stamp the strip material, thus achieving the purpose of stamping and forming parts. The gas storage hood 42 moves vertically along with the upper mold plate 2, and gas is supplied to the inside of the gas storage hood 42 via the piston rod 4 and piston tube 3. After the piston plate 41 reciprocates three times, the gas pressure supplied to the inside of the gas storage hood 42 reaches the set threshold of the pressure relief valve 45. Thus, during the mold closing process of the upper mold plate 2 and the lower mold plate 1, the gas inside the gas storage hood 42 is discharged and depressurized through the pressure relief valve 45, and the gas impacts the inside of the mold cavity of the lower mold base 11 through the air passage 14, causing the residual metal powder on the inner wall of the mold cavity to be blown out, maintaining the relative cleanliness of the inside of the mold cavity, and ensuring the stamping and forming accuracy of the workpiece.

[0033] To control the airflow trajectory, for example, such as Figure 3 As shown, a pad 12 is screwed to the upper outer wall of the lower mold base 11. The pad 12 has equidistant parallel air passages 14 inside, and the air passages 14 correspond to the position of the pressure relief valve 45.

[0034] During use, the design of the pad 12 and the air passage 14 allows the gas discharged from the pressure relief valve 45 to flow orderly into the mold cavity inside the lower mold base 11 through the air passage 14, achieving the purpose of blowing away metal debris in the mold cavity of the lower mold base 11, keeping the stamping environment clean, ensuring the product molding quality, and reducing the defect rate.

[0035] For stamping, for example, such as Figure 2As shown, a mold head 22 is screwed to the lower outer wall of the upper template 2. The mold head 22 is inserted into the mold cavity inside the lower mold base 11. A connecting shaft 21 is screwed to the upper outer wall of the upper template 2. A guide rod 13 is screwed to the upper outer wall of the lower mold base 11 and is equally spaced and parallel. The upper template 2 is movably installed on the outside of the guide rod 13.

[0036] During use, the cooperation between the die head 22 and the mold cavity is the key to realizing the stamping of parts, ensuring the shape and dimensional accuracy of the product. The connecting shaft 21 facilitates the connection between the upper template 2 and the matching hydraulic equipment, so that the hydraulic equipment can drive the upper template 2 to move vertically back and forth. The guide rod 13 provides precise guidance for the up and down movement of the upper template 2, ensuring that the upper template 2 runs smoothly during stamping and that the die head 22 is accurately inserted into the mold cavity.

[0037] For example, to enable coordinated movement, such as... Figure 2 As shown, the lower outer wall of the upper template 2 is screwed with a rectangular array of extrusion rods 23. The extrusion rods 23 are located at the upper end of the gas storage hood 42, and a protective pad is glued and fixed to the end of the extrusion rods 23 facing the gas storage hood 42.

[0038] During use, when the upper template 2 moves downward, the extrusion rod 23 can apply pressure to the gas storage hood 42, pushing the piston rod 4 to move. The piston plate 41 delivers gas to the inside of the gas storage hood 42 through the quick-connect joint 34 and the rubber tube 44, thereby increasing the gas pressure inside the gas storage hood 42. The protective pad can effectively buffer the rigid contact between the extrusion rod 23 and the gas storage hood 42, preventing damage to the surface of the gas storage hood 42.

[0039] To control the airflow path, for example, such as Figure 4 As shown, quick-connect fittings 34 are threadedly connected to both sides of the lower end of the outer wall of the piston tube 3 and both sides of the lower end of the outer wall of the gas storage cover 42. A rubber tube 44 is inserted into the quick-connect fitting 34, and the piston tube 3 is connected to the inside of the gas storage cover 42 through the rubber tube 44 and the quick-connect fitting 34. A one-way valve 32 is provided on the outer wall of both the rubber tube 44 and the air inlet pipe 31.

[0040] In use, the quick-connect coupling 34 enables the rapid assembly and disassembly of the rubber tubing 44, and the length of the rubber tubing 44 is greater than the distance between the lower template 1 and the upper template 2 after they are unfolded, so as to accommodate the reciprocating movement of the upper template 2. The one-way valve 32 is set to control the one-way flow of gas and prevent gas backflow from causing pressure instability. External gas enters the piston tube 3 through the air inlet pipe 31, while the gas inside the piston tube 3 enters the gas storage hood 42 through the rubber tubing 44.

[0041] For gas storage, for example, such as Figure 4As shown, a piston plate 41 is screwed to the lower outer wall of the piston rod 4. The piston plate 41 is located in the piston tube 3. A sealing ring is glued and fixed to the outer wall of the piston plate 41, and the sealing ring is in contact with the inner wall of the piston tube 3. A spring 43 is sleeved on the outer side of the piston rod 4. The upper and lower ends of the spring 43 are in contact with the upper outer wall of the piston tube 3 and the lower outer wall of the gas storage cover 42, respectively. The gas storage cover 42 is elastically connected to the piston tube 3 through the spring 43.

[0042] During use, the cooperation between the piston plate 41 and the sealing ring ensures the airtightness of the piston tube 3 and prevents gas leakage. As the upper template 2 moves, the piston plate 41 can push the gas inside the piston tube 3 out. When the upper template 2 moves down and then moves up to reset, the spring 43 releases its elasticity and pushes the gas storage cover 42 to move up and reset with the upper template 2, preparing for the next gas storage.

[0043] To maintain the usage location, for example, such as Figure 4 As shown, connectors 33 are installed on both sides of the lower end of the outer wall of the piston tube 3, and the piston tube 3 is connected to the upper end face of the lower template 1 by screws through the connectors 33.

[0044] During use, the connector 33 and screws ensure that the piston tube 3 is stably positioned on the upper end face of the lower template 1, ensuring that the piston tube 3 can withstand the vibration and pressure during the stamping process, and making it easy for workers to disassemble and maintain the piston tube 3.

[0045] In use, the hydraulic drive device drives the upper template 2 to descend vertically along the guide rod 13, and the die head 22 at the lower end of the upper template 2 is precisely inserted into the mold cavity of the lower mold base 11 to stamp the material strip and realize the forming of the parts.

[0046] When the upper template 2 moves downward, the extrusion rod 23 installed at its lower end will extrude the gas storage hood 42, pushing the piston rod 4 and piston plate 41 downward within the piston tube 3. Due to the action of the one-way valve 32, the compressed gas below the piston plate 41 can only enter the gas storage hood 42 through the rubber tube 44, causing the gas pressure inside the gas storage hood 42 to continuously increase. At the same time, the spring 43 on the outside of the piston rod 4 is compressed to store energy.

[0047] After the upper template 2 completes three reciprocating movements, the gas pressure inside the gas storage hood 42 reaches the set value of the pressure relief valve 45, and the pressure relief valve 45 opens. The high-pressure gas is then directed and injected into the mold cavity through the air passage 14 in the pad 12, forcefully blowing away residual metal powder and other impurities.

[0048] After stamping is completed, the hydraulic drive unit moves the upper template 2 upward to reset, and the extrusion rod 23 releases the pressure on the gas storage hood 42. At this time, the spring 43 releases its elastic potential energy, pushing the gas storage hood 42 and piston rod 4 upward to reset, and the piston plate 41 returns to its initial position. The one-way valve 32 controls the gas flow, allowing external gas to enter the piston tube 3 through the air inlet pipe 31, preparing for the pneumatic energy storage of the next stamping cycle.

[0049] It should be noted that this utility model is a continuous stamping die for processing automotive motor parts. All components in this utility model are known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A progressive stamping die for processing automotive motor parts, characterized in that, It includes a lower template (1), an upper template (2), a piston tube (3) and a piston rod (4). The lower template (1) is screwed to the outer wall of the upper end and a lower mold base (11). The upper template (2) is provided on the outer wall of the upper end of the lower template (1). Piston tubes (3) are provided on both outer walls of the lower template (1). An air inlet pipe (31) is threaded to the outer wall of the lower end of the piston tube (3). A piston rod (4) is movably installed inside the piston tube (3). An air storage cover (42) is welded to the outer wall of the upper end of the piston rod (4). A pressure relief valve (45) for discharging gas is inserted into the outer wall of the air storage cover (42).

2. The continuous stamping die for processing automotive motor parts according to claim 1, characterized in that, The upper outer wall of the lower mold base (11) is screwed with a pad (12). The pad (12) has equidistant parallel air passages (14) inside, and the air passages (14) correspond to the position of the pressure relief valve (45).

3. The continuous stamping die for processing automotive motor parts according to claim 1, characterized in that, The upper template (2) is screwed to the outer wall of the lower end and has a mold head (22). The mold head (22) is inserted into the mold cavity inside the lower mold base (11). The upper template (2) is screwed to the outer wall of the upper end and has a connecting shaft (21). The lower mold base (11) is screwed to the outer wall of the upper end and has guide rods (13) that are equally spaced and parallel. The upper template (2) is movably installed on the outside of the guide rods (13).

4. The continuous stamping die for processing automotive motor parts according to claim 1, characterized in that, The upper template (2) is screwed to the lower outer wall with a rectangular array of extrusion rods (23). The extrusion rods (23) are located at the upper end of the gas storage hood (42), and the ends of the extrusion rods (23) facing the gas storage hood (42) are bonded and fixed with protective pads.

5. A progressive stamping die for processing automotive motor parts according to claim 1, characterized in that, The piston tube (3) and the gas storage cover (42) are both threaded with quick-connect fittings (34) on both sides of the lower end of the outer wall. A rubber tube (44) is inserted inside the quick-connect fitting (34), and the piston tube (3) is connected to the inside of the gas storage cover (42) through the rubber tube (44) and the quick-connect fitting (34). A one-way valve (32) is provided on the outer wall of the rubber tube (44) and the air inlet pipe (31).

6. The continuous stamping die for processing automotive motor parts according to claim 1, characterized in that, The piston rod (4) is screwed to the outer wall of the lower end of the piston plate (41), the piston plate (41) is located in the piston tube (3), the outer wall of the piston plate (41) is bonded with a sealing ring, and the sealing ring is in contact with the inner wall of the piston tube (3). The piston rod (4) is fitted with a spring (43) on the outer side, and the upper and lower ends of the spring (43) are in contact with the outer wall of the upper end of the piston tube (3) and the outer wall of the lower end of the gas storage cover (42) respectively. The gas storage cover (42) is elastically connected to the piston tube (3) through the spring (43).

7. A progressive stamping die for processing automotive motor parts according to claim 1, characterized in that, The piston tube (3) is equipped with connectors (33) on both sides of the lower end of the outer wall, and the piston tube (3) is connected to the upper end face of the lower template (1) by screws through the connectors (33).

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