A cold extrusion shaft die for automobile parts

Abstract

The present invention relates to the technical field of forging dies, and in particular to a cold extrusion shaft die for automotive accessories, comprising an upper die and a lower die, wherein a base assembly is provided below the lower die, a ejector assembly is provided on the lower side of the lower die, the ejector assembly is used to eject the workpiece after forming, a guide assembly is provided between the upper die and the lower die, the guide assembly is used to guide when the upper die rises or falls, a connecting assembly is provided on the upper side of the upper die, and two sides of the upper die that are far from each other are provided with in-place self-locking assemblies, the in-place self-locking assemblies are used to position the upper die after the upper die and the lower die are closed, and a lifting self-unlocking assembly is provided between the ejector assembly and the connecting assembly. The present invention has the functions of facilitating groove pressing, continuous processing, and automatic locking by arranging the upper die, and has high processing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of forging dies, in particular to a cold extrusion shaft die for automobile accessories. Background Art

[0002] A forging die refers to a tool that can form a blank into a die forging. The forging die is a key process equipment necessary for the production of die forgings. It is a tool that needs to be used in every stroke of the equipment and plays a vital role in the production of die forgings. The forging die is a die used in the forging process. The raw material undergoes plastic deformation in the forging die under the action of external force, thereby obtaining parts of the desired shape and size. The forging die can be divided into hot forging dies, warm forging dies and cold forging dies according to the forging temperature. A forging press is a device used for cold processing of metals and machinery. It only changes the shape of the metal. Forging presses include plate rolling machines, shearing machines, punching machines, presses, hydraulic presses, oil presses, bending machines, etc. At present, many automotive shaft parts require the use of forging presses and forging dies in combination for forging and forming processing during production and processing.

[0003] Although the existing forging dies can forge shafts into shape, it is not convenient to extrude keyways on the shafts. After the shafts are forged into shape, another device is needed to process the keyways, which is rather cumbersome and will result in high processing costs. Moreover, this method of processing shafts is inefficient. Therefore, we propose a cold extrusion shaft die for automotive accessories to solve the above problems. Summary of the invention

[0004] The present invention proposes a cold extrusion shaft die for automotive parts to solve the problem that the existing forging die can forge shafts into shape but is not convenient for extruding keyways on the shafts. After the shafts are forged into shape, another device is needed to process the keyways, which is cumbersome and leads to high processing costs. In addition, this method of processing shafts has low efficiency.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A cold extrusion shaft mold for automotive accessories is designed, comprising an upper mold and a lower mold. A base assembly is provided below the lower mold, and the base assembly is used for installing the lower mold. A ejector assembly is provided on the lower side of the lower mold, and the ejector assembly is used to eject the formed workpiece. A guide assembly is provided between the upper mold and the lower mold, and the guide assembly is used to guide when the upper mold rises or falls. A connecting assembly is provided on the upper side of the upper mold, and two sides of the upper mold that are away from each other are provided with in-place self-locking assemblies, and the in-place self-locking assemblies are used to position the upper mold after the upper mold and the lower mold are closed. A lifting self-unlocking assembly is provided between the ejector assembly and the connecting assembly, and the lifting self-unlocking assembly is used to drive the in-place self-locking assembly to automatically unlock. A keyway pressing assembly is provided on one side of the lower mold, and the keyway pressing assembly is used to press a keyway on the workpiece, and the guide assembly is used to drive the keyway pressing assembly.

[0007] Preferably, the base assembly includes two base frames, the lower mold is fixed on the upper side of the base frames, one side of the base frames is provided with a long hole, and the lower side of the base frames is provided with a plurality of mounting holes.

[0008] Preferably, the ejection assembly includes a T-shaped ejector frame, the lower mold includes a lower chamber, a square hole is provided on the lower side of the lower mold, the T-shaped ejector frame slides on the inner side of the square hole and the lower chamber, a lifting plate is slidably provided on the outer periphery of the T-shaped ejector frame, a tension spring is fixed between the upper side of the lifting plate and the lower side of the lower mold, a retaining ring is fixed on the outer periphery of the T-shaped ejector frame, the retaining ring is located on the upper side of the lifting plate, and the lifting plate slides on the inner side of the long hole.

[0009] Preferably, the guide assembly comprises two square tubes, square grooves are provided on two sides of the upper mold, the square tube is fixed on the inner side of the square groove, a guide sleeve is fixed on one end of the square tube away from the upper mold, a guide frame is slidably provided on the inner side of the guide sleeve, connecting plates are fixed on two sides of the lower mold, a guide hole is provided on the upper side of the connecting plate, the guide frame slides on the inner side of the guide hole, a U-shaped frame is fixed on one side of the guide frame, a fixing rod and two C-shaped sleeves are fixed on the upper side of the square tube, driving grooves are provided on the corresponding two sides of the U-shaped frame, the fixing rod slides on the inner side of the driving groove, the U-shaped frame slides on the inner side of the C-shaped sleeve, two through holes are provided on the upper and lower sides of the square tube, and the U-shaped frame can be slidably fitted on the inner side of the through holes.

[0010] Preferably, the connecting assembly includes a top plate, a connecting frame is fixedly provided on the upper side of the top plate, a connecting hole is provided on the upper side of the connecting frame, a cross plate is provided on the lower side of the top plate, two T-shaped blocks are fixedly provided on the upper side of the cross plate, two through holes are provided on the lower side of the top plate, the T-shaped blocks slide on the inner side of the through holes, and the cross plate is fixed between the two U-shaped frames.

[0011] Preferably, the in-place self-locking assembly includes a double-fork plate, which is fixed on one side of the lower mold, a movable plate is slidably provided on the inner side of the square tube, a plurality of springs are fixed between one side of the movable plate and one side of the guide sleeve, L-shaped clamps are fixed on two sides of the movable plate that are away from each other, the L-shaped clamps are in contact with the double-fork plate, two grooves are provided on one side of the double-fork plate, the L-shaped clamps can be snap-fitted on the inner side of the grooves, movable holes are provided on two sides of the square tube that are away from each other, the L-shaped clamps slide on the inner side of the movable holes, through grooves are provided on two sides of the movable plate that are away from each other, and the through grooves match the U-shaped frame.

[0012] Preferably, the lifting self-unlocking assembly includes a plurality of upright frames, the upright frames are fixed on the upper side of the lifting plate, a beveled unlocking frame is fixed on the upper end of the upright frames, and beveled unlocking rods are fixed on two sides of the movable plate that are away from each other, the beveled unlocking rods slide on the inner side of the movable hole, the beveled unlocking rods are located on the upper side of the beveled unlocking frame, the beveled unlocking frame matches the beveled unlocking rod, a lower pressure frame is provided on the upper side of the beveled unlocking frame, the lower pressure frame is fixed on the top plate, and the beveled unlocking frame can contact the lower pressure frame.

[0013] Preferably, the keyway pressing assembly includes a keyway pressing block, a sliding block is fixedly provided on one side of the keyway pressing block, a pressing hole is provided on one side of the lower mold, the pressing hole is communicated with the lower chamber, the keyway pressing block slides on the inner side of the pressing hole, the sliding block slides on the upper side of a connecting plate, a receiving hole is provided on one side of the guide frame, the sliding block is located in the receiving hole, driving grooves are provided on the corresponding two sides of the receiving hole, two driving wheels are rotatably provided on the two sides away from each other, and the driving wheels are in contact with the inner wall of the driving groove.

[0014] Preferably, the drive wheels are at the same level and have the same diameter.

[0015] The cold extrusion shaft die for automobile parts proposed by the present invention has the following beneficial effects:

[0016] (1) By arranging the upper mold, the lower mold, the guide assembly, and the keyway pressing assembly, the present invention has a convenient groove pressing function. After the upper mold and the lower mold are closed, the keyway can be pressed out by continuing to press down. In addition, during the rising process of the guide frame, the keyway pressing block can automatically withdraw and reset, thereby facilitating the removal of the shaft. This is more convenient, can reduce processing costs, and has higher processing efficiency.

[0017] (2) By arranging an upper die, a lower die, a guide assembly, a connecting assembly, a material ejecting assembly, a self-locking assembly in place, a self-unlocking assembly when lifted, and a keyway pressing assembly, the present invention has a continuous processing function. The connecting assembly can complete forging, pressing out the keyway, and automatically resetting by moving up and down once, thereby having a high processing efficiency.

[0018] (3) By setting up the lower mold and the ejector assembly, the present invention has an automatic ejection function, and the shaft can be automatically ejected after the mold is opened, thereby facilitating material removal.

[0019] (4) By setting up the upper mold, the lower mold, the guide assembly, and the self-locking assembly, the present invention has an automatic locking function. After the molds are closed, the position of the upper mold can be automatically locked to prevent the upper mold from moving during the extrusion of the keyway, thereby ensuring that the shaft can be accurately formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the front three-dimensional structure of a cold extrusion shaft die for automobile parts proposed by the present invention;

[0021] Figure 2 This is a front cutaway three-dimensional structural schematic diagram of a cold extrusion shaft die for automotive parts proposed by the present invention;

[0022] Figure 3 The present invention proposes Figure 2 A schematic diagram of the partial enlarged structure of the middle A area;

[0023] Figure 4 This is a schematic diagram of a side cutaway three-dimensional structure of a cold extrusion shaft die for automotive parts proposed by the present invention;

[0024] Figure 5 The present invention proposes Figure 4 A schematic diagram of the partial enlarged structure of the middle B area;

[0025] Figure 6 This is a front cutaway isometric structural schematic diagram of a cold extrusion shaft die for automotive parts proposed by the present invention;

[0026] Figure 7 The present invention proposes Figure 6 A schematic diagram of the partial enlarged structure of the middle C area;

[0027] Figure 8 This is a schematic diagram of a top cutaway three-dimensional structure of a cold extrusion shaft die for automotive parts proposed by the present invention;

[0028] Fig. 9 The present invention proposes Figure 8 A schematic diagram of the partial enlarged structure of the middle D area;

[0029] Fig.10 This is a schematic diagram of the top cutaway isometric structure of a cold extrusion shaft die for automotive parts proposed by the present invention;

[0030] Fig.11 The present invention proposes Fig.10 A schematic diagram of the partial enlarged structure of the middle E area;

[0031] Fig.12 This is a front isometric structural schematic diagram of a cold extrusion shaft die for automotive parts proposed by the present invention;

[0032] Fig.13 This is a schematic diagram of the partial front three-dimensional structure of a cold extrusion shaft die for automobile accessories proposed by the present invention.

[0033] In the figure: 1. upper mold; 2. lower mold; 3. bottom frame; 4. mounting hole; 5. T-shaped top frame; 6. lifting plate; 7. tension spring; 8. retaining ring; 9. square tube; 10. guide sleeve; 11. guide frame; 12. connecting plate; 13. U-shaped frame; 14. fixing rod; 15. C-shaped sleeve; 16. driving groove; 17. top plate; 18. connecting frame; 19. cross plate; 20. T-block; 21. double fork plate; 22. moving plate; 23. spring; 24. L-shaped clamp; 25. clamping groove; 26. vertical frame; 27. bevel unlocking frame; 28. bevel unlocking rod; 29. ​​through groove; 30. lower pressure frame; 31. keyway pressure block; 32. sliding block; 33. receiving hole; 34. driving groove; 35. driving wheel. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Reference Figures 1 to 13 A cold extrusion shaft mold for automotive accessories includes an upper mold 1 and a lower mold 2. The lower mold 2 includes a lower chamber. A base assembly is provided below the lower mold 2. The base assembly is used to install the lower mold 2. The base assembly includes two base frames 3. The lower mold 2 is fixed on the upper side of the base frame 3. A plurality of mounting holes 4 are provided on the lower side of the base frame 3. Before using the mold, the lower mold 2 needs to be installed and fixed first. When installing the lower mold 2, the base frame 3 can be fixed to the processing table by bolts by inserting the bolts into the mounting holes 4.

[0036] like Figure 1 , Figure 2 , Fig.12As shown, a connecting assembly is provided on the upper side of the upper die 1, and the connecting assembly includes a top plate 17, a connecting frame 18 is fixedly provided on the upper side of the top plate 17, a connecting hole is provided on the upper side of the connecting frame 18, and the connecting frame 18 is an inverted U-shaped structure. A number of triangular reinforcing plates are fixedly provided between the top plate 17 and the connecting frame 18, and a cross plate 19 is provided on the lower side of the top plate 17. Two T-blocks 20 are fixedly provided on the upper side of the cross plate 19, and two through holes are provided on the lower side of the top plate 17. The T-blocks 20 slide on the inner side of the through holes. Before use, after the lower die 2 is fixedly installed, it is also necessary to connect the lifting head of the forging press to the connecting frame 18. At this time, the lifting head of the forging press can be connected to the connecting frame 18 through the connecting hole. After the connection is completed, the lifting head of the forging press can drive the connecting frame 18 to move up and down to complete the forging work.

[0037] like Figure 1 , Figure 2 , Figures 5 to 11 , Fig.13 As shown, a guide assembly is provided between the upper mold 1 and the lower mold 2, and the guide assembly is used to guide when the upper mold 1 rises or falls. The guide assembly can enable the upper mold 1 to be accurately molded with the lower mold 2. The guide assembly includes two square tubes 9. The two sides of the upper mold 1 that are far away from each other are provided with square grooves. The square tube 9 is fixed on the inner side of the square groove. A guide sleeve 10 is fixedly provided at one end of the square tube 9 away from the upper mold 1. A guide frame 11 is slidably provided on the inner side of the guide sleeve 10. Connecting plates 12 are fixedly provided on the two sides of the lower mold 2 that are far away from each other. The connecting plates 12 are fixed on the upper side of the base frame 3. A guide hole is provided on the upper side of the connecting plate 12. The guide frame 11 slides on the guide To the inner side of the hole, the guide frame 11 is an inverted L-shaped structure, a U-shaped frame 13 is fixed on one side of the guide frame 11, and the cross plate 19 is fixed between the two U-shaped frames 13. The U-shaped frame 13 is an inverted U-shaped structure. A fixing rod 14 and two C-shaped sleeves 15 are fixed on the upper side of the square tube 9. A driving groove 16 is provided on the corresponding two sides of the U-shaped frame 13. The fixing rod 14 slides on the inner side of the driving groove 16, and the U-shaped frame 13 slides on the inner side of the C-shaped sleeve 15. Two through holes are provided on the upper and lower sides of the square tube 9. The through holes match the U-shaped frame 13, and the U-shaped frame 13 can be slidably matched on the inner side of the through hole. After the lower mold 2 and the connecting frame 18 are installed (such as Figures 1 to 11As shown, which is the initial state of the mold before use), a predetermined amount of blank can be placed in the lower chamber of the lower mold 2, and then the lifting head of the forging machine is controlled to drive the connecting frame 18 to descend. During the descent of the connecting frame 18, the cross plate 19, the top plate 17, the T-block 20, the guide frame 11, the U-frame 13, the square tube 9 and the upper mold 1 will descend together. The guide frame 11 will play a guiding role, so that the upper mold 1 can accurately fit the lower mold 2. When the upper mold 1 contacts the blank in the lower chamber, the upper mold 1 will stop descending. At this time, the top plate 17 will gradually approach and contact the cross plate 19. After the top plate 17 contacts the cross plate 19, the upper mold 1 will continue to follow the connecting frame 18 to descend, and the blank will be gradually extruded into shape.

[0038] like Figure 2 , Figures 5 to 9 As shown, the two sides of the upper mold 1 that are away from each other are provided with a self-locking assembly in place, and the self-locking assembly in place is used to position the upper mold 1 after the upper mold 1 and the lower mold 2 are closed. The self-locking assembly in place includes a double-fork plate 21, and the double-fork plate 21 is fixed on one side of the lower mold 2. A movable plate 22 is slidably provided on the inner side of the square tube 9, and a plurality of springs 23 are fixedly provided between one side of the movable plate 22 and one side of the guide sleeve 10. L-shaped clamps 24 are fixedly provided on the two sides of the movable plate 22 that are away from each other, and the L-shaped clamps 24 are in contact with the double-fork plate 21. Two card grooves 25 are provided on one side of the double-fork plate 21, and the L-shaped clamps 24 can be snap-fitted on the inner side of the card groove 25. Movable holes are provided on the two sides of the square tube 9 that are away from each other, and the L-shaped clamps 24 slide on the inner side of the movable holes. Through grooves 29 are provided on the two sides of the movable plate 22 that are away from each other, and the through grooves 29 match the U-shaped frame 13, and the U-shaped frame 13 can slide and fit in through grooves On the inner side of the groove 29, the lower end of the U-shaped frame 13 can contact the upper side of the movable plate 22. During the period when the upper mold 1 follows the connecting frame 18 to descend and extrude the blank to gradually form, the U-shaped frame 13 will press on the movable plate 22, so the U-shaped frame 13 can press down the movable plate 22, the square tube 9 and the upper mold 1, and the upper mold 1 will also be close to the lower mold 2. When the upper mold 1 and the lower mold 2 complete the mold closing, it means that most of the blank has been formed. At the same time, the L-shaped clamping head 24 will automatically snap into the clamping groove 25 due to the tension of the spring 23, thereby completing self-locking. At this time, the movable plate 22 will slide, and at this time, it can be automatically aligned with the U-shaped frame 13 through the groove 29. At this time, the U-shaped frame 13 can pass through the groove 29, and the U-shaped frame 13 can continue to descend, while the upper mold 1 and the square tube 9 will stop moving, and then the U-shaped frame 13 will continue to descend to complete the subsequent extrusion key groove work.

[0039] like Figures 1 to 3 , Fig.12As shown, a ejection assembly is provided on the lower side of the lower mold 2, and the ejection assembly is used to eject the workpiece after molding. The ejection assembly includes a T-shaped ejector frame 5, a square hole is provided on the lower side of the lower mold 2, and the square hole is connected to the lower chamber. The T-shaped ejector frame 5 slides on the inner side of the square hole and the lower chamber, and a lifting plate 6 is slidably provided on the outer periphery of the T-shaped ejector frame 5. A tension spring 7 is fixedly provided between the upper side of the lifting plate 6 and the lower side of the lower mold 2. The tension of the tension spring 7 is much greater than the sum of the tensions of the spring 23. A retaining ring 8 is fixedly provided on the outer periphery of the T-shaped ejector frame 5, and the retaining ring 8 is located on the upper side of the lifting plate 6. The retaining ring 8 can contact the lifting plate 6, and one side of the bottom frame 3 is A long hole is provided, and the lifting plate 6 slides on the inner side of the long hole. The bottom frame 3 is slidably connected with the lifting plate 6. A plurality of spline bars are fixedly provided at the bottom of the lower chamber. A plurality of spline grooves matching the spline bars are provided on the outer periphery of the T-shaped top frame 5, so that a spline can be formed at the lower end of the shaft. During the period when the upper mold 1 gradually extrudes the blank into shape, the blank will press down the T-shaped top frame 5, causing the T-shaped top frame 5 to descend, and at the same time, the tension spring 7 will be stretched. After the downward pressure is completed, after the upper mold 1 and the lower mold 2 are opened, the T-shaped top frame 5 will automatically rise due to the tension of the tension spring 7, so that the shaft in the lower mold 2 can be ejected, thereby facilitating material removal.

[0040] like Figure 2 , Figure 3 , Figure 6 , Figures 10 to 13 As shown, a keyway pressing assembly is provided on one side of the lower mold 2, and the keyway pressing assembly is used to press a keyway on a workpiece, and a guide assembly is used to drive the keyway pressing assembly, and the keyway pressing assembly includes a keyway pressing block 31, and a sliding block 32 is fixedly provided on one side of the keyway pressing block 31, and a pressing hole is provided on one side of the lower mold 2, and the pressing hole is connected to the lower chamber, and the keyway pressing block 31 slides on the inner side of the pressing hole, and the sliding block 32 slides on the upper side of a connecting plate 12, and a receiving hole 33 is provided on one side of a guide frame 11, and the sliding block 32 is located in the receiving hole 33, and driving grooves 34 are provided on the corresponding two sides of the receiving hole 33, and two driving wheels 35 are rotatably provided on the two sides away from the sliding block 32, and the driving wheels 35 At the same horizontal height and with the same diameter, the driving wheel 35 contacts the inner wall of the driving groove 34. After the L-shaped clamping head 24 is clamped into the clamping groove 25, and while the U-shaped frame 13 and the guide frame 11 continue to descend, the driving wheel 35 will stick to the inner wall of the driving groove 34 and rotate. The driving wheel 35 and the driving groove 34 cooperate, so that the sliding block 32 can automatically approach the lower mold 2. At the same time, the sliding block 32 will drive the keyway pressing block 31 to be inserted into the lower chamber, so that the keyway can be pressed on the shaft, and automatic keyway pressing can be realized. After the keyway is pressed, the connecting frame 18 can be controlled to start rising. During the rising period of the connecting frame 18, the keyway pressing block 31 and the sliding block 32 will automatically move away from the lower mold 2 for reset.

[0041] like Figure 1 , Figure 4 , Figure 8 , Fig.12 , Fig.13 As shown, a lifting self-unlocking component is provided between the ejecting component and the connecting component, and the lifting self-unlocking component is used to drive the self-locking component in place to automatically unlock. After the mold is closed, only when the connecting component rises, the lifting self-unlocking component will drive the self-locking component in place to automatically unlock. The lifting self-unlocking component includes a plurality of vertical frames 26, and the vertical frames 26 are fixed on the upper side of the lifting plate 6. The upper end of the vertical frames 26 is fixed with a bevel unlocking frame 27, and the two sides of the moving plate 22 that are away from each other are fixed with bevel unlocking rods 28. The bevel unlocking rods 28 slide on the inner side of the movable hole, and the bevel unlocking rods 28 are located on the upper side of the bevel unlocking frame 27. The bevel unlocking frame 27 matches the bevel unlocking rods 28. 7 can contact and cooperate with the bevel unlocking rod 28. A lower pressing frame 30 is provided on the upper side of the bevel unlocking frame 27. The lower pressing frame 30 is fixed on the top plate 17. The bevel unlocking frame 27 can contact the lower pressing frame 30. After the blank is placed in the lower chamber of the lower mold 2, when the top plate 17 descends, the lower pressing frame 30 will descend along with the top plate 17, and the lower pressing frame 30 will gradually approach and contact the bevel unlocking frame 27. After the lower pressing frame 30 contacts the bevel unlocking frame 27, the bevel unlocking frame 27 and the lifting plate 6 will be pressed down together, so that the bevel unlocking frame 27 cannot contact the bevel unlocking rod 28, thereby not affecting the L-shaped clamping head 24 from being clamped into the clamping slot 25. When all the extrusion work is completed (such as Fig.12 As shown, Fig.12 To achieve this goal, the mold completes all the extrusion work, that is, the guide frame 11, the U-shaped frame 13 and the lifting plate 6 are in the state of descending to the lowest point). When the connecting frame 18 needs to rise, the connecting frame 18 can be controlled to start rising. During the rising period of the connecting frame 18, the top plate 17 will first move away from the cross plate 19. At this time, the lower pressing frame 30 will rise first with the top plate 17. When the lower pressing frame 30 rises, the lifting plate 6 and the bevel unlocking frame 27 will also rise due to the tension of the tension spring 7. The top plate 17 contacts the top lower part of the T-block 20. After turning sideways, the top plate 17 will pull the cross plate 19, the guide frame 11 and the U-shaped frame 13 up together through the T-block 20. When the lower surface of the U-shaped frame 13 is about to be flush with the upper surface of the movable plate 22, the bevel unlocking frame 27 will contact the bevel unlocking rod 28. When the lower surface of the U-shaped frame 13 moves to be flush with the upper surface of the movable plate 22, the movable plate 22 can slide, and the bevel of the bevel unlocking frame 27 will also squeeze the bevel of the bevel unlocking rod 28, so that the L-shaped card head 24 exits the card slot 25 (the state at this time is as shown in FIG. Fig.13 As shown), the automatic unlocking can be completed, and then the top plate 17 and the U-shaped frame 13 continue to rise, and then the fixing rod 14 will contact the bottom of the driving groove 16, and then the U-shaped frame 13 will drive the fixing rod 14, the square tube 9, the guide frame 11 and the upper mold 1 to rise together. After rising to the right position, the initial state can be reached (as shown). Figure 1As described above, during the rising of the upper mold 1, the lifting plate 6 will rise due to the tension of the tension spring 7. When the lifting plate 6 contacts the retaining ring 8, the lifting plate 6 can drive the retaining ring 8 and the T-shaped top frame 5 to rise together. When the T-shaped top frame 5 rises, the shaft can be ejected to facilitate material removal.

Claims

1. A cold extrusion shaft die for automobile parts, comprising an upper die (1) and a lower die (2), characterized in that: A base assembly is provided below the lower mold (2), and the base assembly is used for installing the lower mold (2). A ejector assembly is provided on the lower side of the lower mold (2), and the ejector assembly is used for ejecting a workpiece after molding. A guide assembly is provided between the upper mold (1) and the lower mold (2), and the guide assembly is used for guiding when the upper mold (1) rises or falls. A connecting assembly is provided on the upper side of the upper mold (1). Two sides of the upper mold (1) that are separated from each other are provided with in-position self-locking assemblies, and the in-position self-locking assemblies are used for positioning the upper mold (1) after the upper mold (1) and the lower mold (2) are closed. A lifting self-unlocking assembly is provided between the ejector assembly and the connecting assembly, and the lifting self-unlocking assembly is used for driving the in-position self-locking assembly to automatically unlock. A keyway pressing assembly is provided on one side of the lower mold (2), and the keyway pressing assembly is used for pressing a keyway on a workpiece. The guide assembly is used for driving the keyway pressing assembly. The base assembly comprises two base frames (3), the lower mold (2) is fixed on the upper side of the base frames (3), one side of each base frame (3) is provided with a long hole, and the lower side of the base frame (3) is provided with a plurality of mounting holes (4); The ejector assembly comprises a T-shaped ejector frame (5), the lower mold (2) comprises a lower chamber, a square hole is provided on the lower side of the lower mold (2), the T-shaped ejector frame (5) slides on the inner side of the square hole and the lower chamber, a lifting plate (6) is slidably provided on the outer periphery of the T-shaped ejector frame (5), a tension spring (7) is fixedly provided between the upper side of the lifting plate (6) and the lower side of the lower mold (2), a retaining ring (8) is fixedly provided on the outer periphery of the T-shaped ejector frame (5), the retaining ring (8) is located on the upper side of the lifting plate (6), and the lifting plate (6) slides on the inner side of the long hole.

2. A cold extrusion shaft die for automobile parts according to claim 1, characterized in that: The guide assembly comprises two square tubes (9), two sides of the upper mold (1) are provided with square grooves, the square tube (9) is fixed on the inner side of the square grooves, one end of the square tube (9) away from the upper mold (1) is fixed with a guide sleeve (10), the inner side of the guide sleeve (10) is slidably provided with a guide frame (11), and two sides of the lower mold (2) are fixed with connecting plates (12), the upper side of the connecting plates (12) is provided with guide holes, and the guide frame (11) slides on the inner side of the guide holes, so that A U-shaped frame (13) is fixedly provided on one side of the guide frame (11), a fixing rod (14) and two C-shaped sleeves (15) are fixedly provided on the upper side of the square tube (9), driving grooves (16) are provided on the corresponding two sides inside the U-shaped frame (13), the fixing rod (14) slides on the inner side of the driving groove (16), the U-shaped frame (13) slides on the inner side of the C-shaped sleeve (15), and two through holes are provided on the upper and lower sides of the square tube (9), and the U-shaped frame (13) can be slidably fitted on the inner side of the through holes.

3. A cold extrusion shaft die for automobile parts according to claim 2, characterized in that: The connection assembly comprises a top plate (17), a connection frame (18) is fixedly provided on the upper side of the top plate (17), a connection hole is provided on the upper side of the connection frame (18), a cross plate (19) is provided on the lower side of the top plate (17), two T-shaped blocks (20) are fixedly provided on the upper side of the cross plate (19), two through holes are provided on the lower side of the top plate (17), the T-shaped blocks (20) slide inside the through holes, and the cross plate (19) is fixed between the two U-shaped frames (13).

4. A cold extrusion shaft die for automobile parts according to claim 3, characterized in that: The in-position self-locking component comprises a double-fork plate (21), the double-fork plate (21) being fixed on one side of the lower mold (2), a movable plate (22) being slidably provided on the inner side of the square tube (9), a plurality of springs (23) being fixedly provided between one side of the movable plate (22) and one side of the guide sleeve (10), L-shaped clamping heads (24) being fixedly provided on two sides of the movable plate (22) being away from each other, the L-shaped clamping heads (24) being in contact with the double-fork plate (21), two clamping grooves (25) being provided on one side of the double-fork plate (21), the L-shaped clamping heads (24) being able to be clamped and matched on the inner sides of the clamping grooves (25), movable holes being provided on two sides of the square tube (9) being away from each other, the L-shaped clamping heads (24) sliding on the inner sides of the movable holes, through grooves (29) being provided on two sides of the movable plate (22) being away from each other, the through grooves (29) being matched with the U-shaped frame (13).

5. A cold extrusion shaft die for automobile parts according to claim 4, characterized in that: The lifting self-unlocking assembly comprises a plurality of vertical frames (26), wherein the vertical frames (26) are fixed on the upper side of the lifting plate (6), and a bevel unlocking frame (27) is fixedly provided at the upper end of the vertical frames (26), and bevel unlocking rods (28) are fixedly provided on two sides of the movable plate (22) that are away from each other, and the bevel unlocking rods (28) slide on the inner side of the movable hole, and the bevel unlocking rods (28) are located on the upper side of the bevel unlocking frame (27), and the bevel unlocking frame (27) matches the bevel unlocking rods (28), and a lower pressing frame (30) is provided on the upper side of the bevel unlocking frame (27), and the lower pressing frame (30) is fixed on the top plate (17), and the bevel unlocking frame (27) can contact the lower pressing frame (30).

6. The cold extrusion shaft die for automobile parts according to claim 2, characterized in that: The keyway pressing assembly comprises a keyway pressing block (31), a sliding block (32) is fixedly provided on one side of the keyway pressing block (31), a pressing hole is provided on one side of the lower mold (2), the pressing hole is communicated with the lower chamber, the keyway pressing block (31) slides on the inner side of the pressing hole, the sliding block (32) slides on the upper side of a connecting plate (12), a receiving hole (33) is provided on one side of the guide frame (11), the sliding block (32) is located in the receiving hole (33), driving grooves (34) are provided on two corresponding sides of the receiving hole (33), and two driving wheels (35) are rotatably provided on two sides away from each other of the sliding block (32), and the driving wheels (35) are in contact with the inner wall of the driving groove (34).

7. A cold extrusion shaft die for automobile parts according to claim 6, characterized in that: The driving wheels (35) are at the same level and have the same diameter.

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