Automobile bolt machining mold convenient to demold

Abstract

The invention relates to the field of automobile bolt machining molds, in particular to an automobile bolt machining mold convenient to demold, and solves the problems that in the stamping process, a bolt and a mold are forcibly separated only through ejection, stress is uneven, and the bolt can be possibly damaged. The stamping die comprises a top plate and a bottom plate which are arranged up and down, a stamping mechanism is arranged on the top plate, an upper die part and a lower die part are arranged on the bottom plate, the lower die part is fixedly arranged on the bottom plate, an inner threaded sleeve is arranged on the bottom plate, the inner threaded sleeve is in threaded connection with a lifting ring, and the lifting ring is fixedly connected with the upper die part. A control mechanism for controlling the upper die part to rotate is arranged; the pressing mechanism is used for pressing the interior of the upper die part and comprises a movably arranged pressing piece and a transmission mechanism used for controlling the pressing piece to move; a bolt semi-finished product can be separated from the upper mold part and the lower mold part through relative movement, the adhesion problem is solved, stress is reasonable, therefore, bolt damage is reduced, and demolding is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of automobile bolt processing dies, and in particular to an automobile bolt processing die which is easy to demould. Background Art

[0002] Hexagonal bolts are highly versatile. Their reliability has been verified under actual working conditions in key applications such as automobile chassis connections and load-bearing parts of construction machinery. Hexagonal bolts consist of a hexagonal head and a threaded shank. During production, the steel bar is first heated and stamped, the head and shank of the bolt are stamped into shape, and finally the threads of the shank are processed. During the stamping process, demolding is somewhat inconvenient.

[0003] After searching, the Chinese utility model patent with patent number CN209139635U discloses an automobile bolt processing mold that is easy to demold, including a base, a lower mold, an upper mold and a demolding assembly. The top of the base is fixedly connected to the lower mold, the surface of the lower mold is provided with a guide column, the top of the guide column is provided with an upper mold, the top of the upper mold is fixedly connected to the mounting joint, the top of the upper mold is evenly distributed with positioning grooves, the surface of the lower mold is provided with a mold cavity, the interior of the mold cavity is provided with a mold core, the interior of the mold cavity is symmetrically distributed with notches, the interior of the lower mold is provided with a demolding assembly, and the demolding assembly includes a push rod, a hydraulic rod, a hydraulic base and a hydraulic cylinder; this automobile bolt processing mold that is easy to demold, by providing a demolding assembly at the bottom of the mold core, can be used to push the finished product out of the mold core through the push rod after the automobile bolt processing is completed, without damaging the bolt itself, and at the same time, the mold opening speed is fast, which is convenient for demolding.

[0004] However, during the stamping process, adhesion may occur between the bolt and the die. Forcible separation by ejection alone will result in uneven force and may damage the bolt.

[0005] Therefore, the present invention provides a mold for processing automobile bolts that is easy to demould, so as to solve the above problems. Summary of the Invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an automobile bolt processing mold that is easy to demold. The problem to be solved is: to provide an automobile bolt processing mold that is easy to demold, which can solve the problem of mold adhesion, uniform force during demolding, and reduce bolt damage.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is: A mold for processing automobile bolts that is easy to demould comprises a top plate and a bottom plate arranged above and below, the top plate being provided with a punching mechanism, the bottom plate being provided with an upper mold portion and a lower mold portion, the lower mold portion being fixedly mounted on the bottom plate, the bottom plate being provided with an internally threaded sleeve, the internally threaded sleeve being threadedly connected to a lifting ring, the lifting ring being fixedly connected to the upper mold portion, and provided with a control mechanism for controlling the rotation of the upper mold portion; It also includes a pressing mechanism for pressing the interior of the upper mold part, which includes a movably arranged pressing member and a transmission mechanism for controlling the movement of the pressing member. When the upper mold part rotates and moves away from the lower mold part, the pressing member is driven to move by the transmission mechanism, so that the pressing member presses the interior of the upper mold part.

[0008] Preferably, the pressing mechanism includes a sliding rod fixedly connected to the upper mold part, the sliding rod is horizontal, a first support member is fixedly provided on the sliding rod, a rotating rod is hinged on the first support member, and the pressing member is fixedly provided at one end of the rotating rod.

[0009] Preferably, the rotating rod is a telescopic structure, and the transmission mechanism includes a sliding member slidably arranged on the slide rod and a second support member fixedly arranged on the slide rod. The sliding member is hinged to the rotating rod, and the sliding member is connected to a push-pull rod. The push-pull rod is arranged on the second support member. When the upper mold part rotates and moves away from the lower mold part, the push-pull rod drives the bottom end of the rotating rod, driving the rotating rod to rotate, so that the pressing member presses the upper mold part.

[0010] Preferably, the push-pull rod is a telescopic structure, including an internally threaded sleeve and an externally threaded sleeve connected by threads. The internally threaded sleeve is fixedly connected to the sliding member, and the externally threaded sleeve is rotatably set on the second support member. The externally threaded sleeve is provided with a gear and also includes an annular rack adapted to and meshing with the gear. When the push-pull rod rotates, it drives the externally threaded sleeve to rotate, driving the gear to move along the annular rack. The gear and the externally threaded sleeve rotate themselves, driving the internally threaded sleeve to extend and retract.

[0011] Preferably, the control mechanism includes a first rotating handle fixedly connected to the upper mold part and a limiting baffle fixedly arranged on the bottom plate. When the first rotating handle contacts the limiting baffle, the upper mold part and the stamping mechanism correspond in angle.

[0012] Preferably, the limit baffle is provided with a slide groove, a positioning block is slidingly provided in the slide groove, and the positioning block is provided with a slot adapted to the first turning handle, the slide groove is rotatably connected to a threaded rod, the threaded rod is threadedly connected to a connecting plate, the connecting plate is fixedly connected to a connecting shaft, the connecting shaft slides through the slide groove and is fixedly connected to the positioning block, and the threaded rod is also fixedly connected to the second turning handle. When the first turning handle contacts the limit baffle, the positioning block can be controlled to approach the first turning handle and fix the first turning handle in position.

[0013] Preferably, the bottom of the lower mold part is provided with a lifting mechanism, and the lifting mechanism includes a push rod that slides through the lower mold part in the vertical direction. When the push rod drops to the lowest position, the top of the push rod is flush with the bottom of the lower mold part, and the bottom of the push rod is fixedly connected to a push plate.

[0014] Preferably, a vertical plate is provided between the top plate and the bottom plate, and a support plate is provided at the bottom of the bottom plate.

[0015] Preferably, the punching mechanism includes a cylinder and a punching head.

[0016] The beneficial effects of the present invention are: 1. During stamping, the present invention first brings the upper die part and the lower die part close to form a die cavity, then puts the steel bar into the die cavity, and punches the steel bar into shape through the stamping mechanism to form a bolt semi-finished product. Subsequently, the stamping mechanism is reset to complete the stamping; during demoulding, it is only necessary to drive the upper die part to rotate through the control mechanism, so that the upper die part rotates and moves away from the lower die part. When the upper die part rotates, it drives the bolt head to rotate, and then drives the bolt rod part to rotate, so that the bolt rod part and the lower die part move relative to each other, which can separate the bolt rod part from the lower die part, and at the same time drive the pressing part to move, so that the pressing part presses the bolt head in the upper die part, so that the bolt head and the upper die part move relative to each other, which can separate the bolt head from the upper die part. The present invention can separate the bolt semi-finished product from the upper die part and the lower die part through relative movement, solve the adhesion problem, and the force is reasonable, thereby reducing bolt damage and facilitating demoulding.

[0017] 2. The present invention only needs to control the rotation and reset of the upper mold part through the control mechanism during demoulding. It has a simple structure, is easy to operate, can effectively improve the demoulding efficiency, and has low production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 A magnified schematic diagram of point A in the middle; Figure 3 for Figure 1 A magnified schematic diagram of point B in the middle; Figure 4 for Figure 1 Enlarged schematic diagram of point C in the middle; Figure 5 Schematic diagram of the specific structure of the pressing member and the transmission mechanism in the present invention; Figure 6 for Figure 5 Schematic diagram of the structure in motion; Figure 7 Schematic diagram of the internal structure of the lower mold part of the present invention.

[0019] In the figure: 1. top plate, 2. cylinder, 3. punch head, 4. vertical plate, 5. bottom plate, 6. support plate, 7. first rotating handle, 8. threaded sleeve, 9. lower die, 10. lifting ring, 11. upper die, 12. limit baffle, 13. second rotating handle, 14. threaded rod, 15. connecting plate, 16. connecting shaft, 17. slide, 18. positioning block, 19. pressing member, 20. rotating rod, 21. first supporting member, 22. sliding member, 23. internally threaded sleeve, 24. sliding rod, 25. second supporting member, 26. externally threaded sleeve, 27. annular rack, 28. gear, 29. support block, 30. push plate, 31. ejector rod. DETAILED DESCRIPTION

[0020] The following will refer to the attached Figures 1 to 7 The embodiments of the present invention are described in detail. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0021] A mold for processing automobile bolts that is easy to demould includes a top plate 1 and a bottom plate 5 arranged up and down, a vertical plate 4 is provided between the top plate 1 and the bottom plate 5, a support plate 6 is provided at the bottom of the bottom plate 5, and a stamping mechanism is provided below the top plate 1. The stamping mechanism includes a cylinder 2 and a stamping head 3. The stamping head 3 is a hexagonal prism. An upper mold part 11 and a lower mold part 9 are provided on the bottom plate 5. The upper mold part 11 and the lower mold part 9 are arranged up and down. The upper mold part 11 is hollow, and the hollow part is adapted to the stamping head 3. The lower mold part 9 is a cylindrical shape with an open top. When the upper mold part 11 and the lower mold part 9 are in close contact, a mold cavity is formed. During stamping, after the steel bar is placed in the mold cavity, the stamping head 3 can be controlled by the cylinder 2 to move in the up and down direction to stamp the steel bar. A bolt semi-finished product with a hexagonal prism head and a cylindrical rod can be produced. This part is existing technology and will not be described in detail here.

[0022] As attached Figure 1 、 Figure 3 、 Figure 7 As shown, the lower mold part 9 is fixedly set on the base plate 5, and the top of the lower mold part 9 is flush with the top of the base plate 5. An internal threaded sleeve 8 is provided on the base plate 5, and the internal threaded sleeve 8 is threadedly connected to a lifting ring 10. The lifting ring 10 is fixedly connected to the upper mold part 11 and is provided with a control mechanism for controlling the rotation of the upper mold part 11. When the lifting ring 10 and the upper mold part 11 rotate, the height will also change. When the bottom of the upper mold part 11 contacts the base plate 5, a mold cavity is formed, and the upper mold part 11 corresponds to the stamping mechanism at this time; it also includes a pressing mechanism for pressing the inside of the upper mold part 11, the pressing mechanism includes a movably arranged pressing member 19 and a transmission mechanism for controlling the movement of the pressing member 19. When the upper mold part 11 rotates and moves away from the lower mold part 9, the pressing member 19 is driven to move by the transmission mechanism, so that the pressing member 19 presses the inside of the upper mold part 11.

[0023] When in use, before stamping, the upper die part 11 is driven to rotate by the control mechanism, so that the upper die part 11 rotates and descends to the bottom. At this time, the bottom of the upper die part 11 is in close contact with the bottom plate 5 and corresponds to the punching head 3 of the punching mechanism. A mold cavity with no upper opening is formed by the upper die part 11, the bottom plate 5 and the lower die part 9. Then the heated steel bar is put into the mold cavity, the punching mechanism is started for stamping, and the punching head 3 is pushed downward by the cylinder 2 so that the punching head 3 enters from the upper die part 11 to punch the steel bar and punch the steel bar into a semi-finished bolt. Then the punching mechanism is reset to complete the stamping. When the semi-finished bolt is demoulded, the upper die part 11 is driven to rotate by the control mechanism, so that the upper die part 11 rotates and moves upward. Raise to a certain height. Due to the shape of the upper die 11 and the bolt head, the upper die 11 will drive the bolt head to rotate, and then drive the entire bolt semi-finished product to rotate. Due to the shape of the lower die and the bolt rod, the bolt rod will move relative to the lower die 9, thereby removing the adhesion between the bolt rod and the lower die 9, and separating the bolt rod from the lower die 9. In this process, the pressing part 19 will also be driven to move by the transmission mechanism, so that the pressing part 19 presses the upper die 11, so that the bolt head moves relative to the upper die 11, thereby removing the adhesion between the bolt head and the upper die 11, and separating the bolt head from the upper die 11. Finally, the bolt semi-finished product is taken out, and the upper die 11 is reset to complete the entire stamping demoulding.

[0024] The present invention can separate the bolt semi-finished product from the upper mold part 11 and the lower mold part 9 through relative movement, solve the adhesion problem, and reasonably apply force, thereby reducing bolt damage and facilitating demoulding; and the present invention has a simple structure, is easy to operate, can effectively improve demoulding efficiency, and has low production costs.

[0025] As attached Figure 1 、 Figure 3 As shown, the pressing mechanism in this embodiment includes a sliding rod 24 fixedly connected to the upper mold part 11. The sliding rod 24 is horizontally arranged, and a first support member 21 is fixed on the sliding rod 24. A rotating rod 20 is hinged on the first support member 21. The pressing member 19 is fixedly arranged at one end of the rotating rod 20. The transmission mechanism drives the rotating rod 20 to move, and then drives the pressing member 19 to move, thereby driving the pressing member 19 to press the upper mold part 11.

[0026] As attached Figure 1 、 Figure 3As shown, in this embodiment, the rotating rod 20 is a telescopic structure, and the transmission mechanism includes a sliding member 22 slidably arranged on the sliding rod 24 and a second support member 25 fixedly arranged on the sliding rod 24. The sliding member 22 is located between the first support member 21 and the second support member 25. The sliding member 22 is hinged to a part of the rotating rod 20, and the first support member 21 is hinged to another part of the rotating rod 20. The sliding member 22 is connected to a push-pull rod, and the push-pull rod is arranged on the second support member 25. When the upper mold part 11 rotates and moves away from the lower mold part 9, the push-pull rod is driven to pull the bottom end of the rotating rod 20, driving the rotating rod 20 to rotate, so that the pressing member 19 approaches the upper mold part 11 and presses the upper mold part 11.

[0027] As attached Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 As shown, in this embodiment, the push-pull rod is a telescopic structure, including an internal threaded sleeve rod 23 and an external threaded sleeve rod 26 that are threadedly connected. The internal threaded sleeve rod 23 is fixedly connected to the sliding member 22, and the external threaded sleeve rod 26 is rotatably set on the second support member 25. A gear 28 is provided on the external threaded sleeve rod 26, and the axis of the gear 28 is horizontal. It also includes an annular rack 27 that is adapted and meshed with the gear 28. The annular rack 27 is horizontally arranged with the teeth facing upward, and a support block 29 is provided on the vertical plate 4 corresponding to the annular rack 27. The annular rack 27 is fixedly arranged It is placed on the support block 29. During operation, when the push-pull rod rotates, that is, when the entire push-pull rod rotates with the upper mold part 11 in the horizontal plane, it drives the external threaded sleeve 26 to rotate, and drives the gear 28 to move along the annular rack 27. The gear 28 will rotate around its own axis at the same time, thereby driving the external threaded sleeve 26 to rotate around its own axis, and then driving the internal threaded sleeve 23 to extend and retract, changing the position of the sliding member 22 on the sliding rod 24, and realizing the push-pull of the corresponding end of the rotating rod 20, so that the rotating rod 20 rotates and adaptably retracts and retracts. The state of the pressing member 19 can be referred to the attached Figure 5 、 Figure 6 , thereby enabling the pressing member 19 to press the inside of the upper mold portion 11 .

[0028] As attached Figure 1 、 Figure 2As shown, in this embodiment, the control mechanism includes a first rotating handle 7 fixedly connected to the upper mold part 11 and a limit baffle 12 fixedly arranged on the bottom plate 5. The upper mold part 11 is controlled to rotate by rotating the first rotating handle 7. By utilizing the principle of leverage, when force is applied from the end of the first rotating handle 7 away from the upper mold part 11, effort can be saved, thereby ensuring the force and performing demoulding. Moreover, when the first rotating handle 7 contacts the limit baffle 12, the upper mold part 11 corresponds to the angle of the stamping mechanism. During specific use, the first rotating handle 7 is rotated by holding the end of the first rotating handle 7 away from the upper mold part 11 so that the first rotating handle 7 contacts the limit baffle 12. At this time, the steel bar is inserted and stamping is performed. After the stamping is completed, the first rotating handle 7 is moved away from the limit baffle 12, and at the same time, the upper mold part 11 is driven away from the lower membrane part 9. In addition, it should be noted that the first rotating handle 7 can also be connected to a certain electric control device for driving to improve the intelligence of the device.

[0029] As attached Figure 1 、 Figure 2 The second handle 13 is fixed to the upper mold part 11, and the second handle 13 is fixed to the upper mold part 11.

[0030] As attached Figure 1 、 Figure 7 As shown, in this embodiment, a lifting mechanism is provided at the bottom of the lower mold part 9, and the lifting mechanism includes a push rod 31 that slides through the lower mold part 9 in the vertical direction. When the push rod 31 drops to the lowest position, the top of the push rod 31 is flush with the bottom of the lower mold part 9. A push plate 30 is fixedly connected to the bottom of the push rod 31. After stamping, the push plate 30 can be pushed upward, and the push plate 30 drives the push rod 31 to lift the stamped semi-finished bolt, thereby facilitating the removal of the semi-finished bolt. In addition, it should be noted that the push plate 30 can also be connected to a certain electronic control device for drive to improve the intelligence of the device.

[0031] It should be noted that in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A mold for processing automobile bolts that is easy to demould, comprising a top plate (1) and a bottom plate (5) arranged above and below, wherein the top plate (1) is provided with a punching mechanism, and the bottom plate (5) is provided with an upper mold portion (11) and a lower mold portion (9), characterized in that: The lower mold part (9) is fixedly arranged on the bottom plate (5), and the bottom plate (5) is provided with an internal threaded sleeve (8), and the internal threaded sleeve (8) is threadedly connected to a lifting ring (10), and the lifting ring (10) is fixedly connected to the upper mold part (11) and is provided with a control mechanism for controlling the rotation of the upper mold part (11); The invention also includes a pressing mechanism for pressing the interior of the upper mold part (11), wherein the pressing mechanism includes a movably arranged pressing member (19) and a transmission mechanism for controlling the movement of the pressing member (19). When the upper mold part (11) rotates and moves away from the lower mold part (9), the pressing member (19) is driven to move by the transmission mechanism, so that the pressing member (19) presses the interior of the upper mold part (11).

2. The automobile bolt processing mold that is easy to demould according to claim 1 is characterized in that: The pressing mechanism includes a sliding rod (24) fixedly connected to the upper mold part (11), the sliding rod (24) is horizontally arranged, a first support member (21) is fixedly provided on the sliding rod (24), a rotating rod (20) is hinged on the first support member (21), and the pressing member (19) is fixedly arranged on one end of the rotating rod (20).

3. The automobile bolt processing mold that is easy to demould according to claim 2 is characterized in that: The rotating rod (20) is a telescopic structure. The transmission mechanism includes a sliding member (22) slidably arranged on the slide rod (24) and a second support member (25) fixedly arranged on the slide rod (24). The sliding member (22) is hinged to the rotating rod (20). The sliding member (22) is connected to a push-pull rod. The push-pull rod is arranged on the second support member (25). When the upper mold part (11) rotates and moves away from the lower mold part (9), the push-pull rod is driven to pull the bottom end of the rotating rod (20), driving the rotating rod (20) to rotate, so that the pressing member (19) presses the upper mold part (11).

4. The automobile bolt processing mold that is easy to demould according to claim 3 is characterized in that: The push-pull rod is a telescopic structure, comprising an internally threaded sleeve rod (23) and an externally threaded sleeve rod (26) connected by threads, wherein the internally threaded sleeve rod (23) is fixedly connected to the sliding member (22), and the externally threaded sleeve rod (26) is rotatably arranged on the second support member (25). The externally threaded sleeve rod (26) is provided with a gear (28) and also comprises an annular rack (27) adapted to and meshingly connected with the gear (28). When the push-pull rod rotates, the externally threaded sleeve rod (26) is driven to rotate, and the gear (28) is driven to move along the annular rack (27). The gear (28) and the externally threaded sleeve rod (26) rotate themselves, driving the internally threaded sleeve rod (23) to telescope.

5. The automobile bolt processing mold that is easy to demould according to claim 1 is characterized in that: The control mechanism comprises a first rotating handle (7) fixedly connected to the upper die portion (11) and a limit baffle (12) fixedly arranged on the bottom plate (5); when the first rotating handle (7) contacts the limit baffle (12), the upper die portion (11) corresponds to the stamping mechanism angle.

6. The automobile bolt processing mold that is easy to demould according to claim 5, characterized in that: The limit baffle (12) is provided with a slide groove (17), a positioning block (18) is slidably provided in the slide groove (17), and a card slot adapted to the first rotating handle (7) is provided on the positioning block (18). The slide groove (17) is rotatably connected to a threaded rod (14), the threaded rod (14) is threadedly connected to a connecting plate (15), and the connecting plate (15) is fixedly connected to a connecting shaft (16). The connecting shaft (16) is slidably provided in the slide groove (17) and is fixedly connected to the positioning block (18). The threaded rod (14) is also fixedly connected to the second rotating handle (13). When the first rotating handle (7) contacts the limit baffle (12), the positioning block (18) can be controlled to approach the first rotating handle (7) and fix the first rotating handle (7) in position.

7. The automobile bolt processing mold that is easy to demould according to any one of claims 1 to 7, characterized in that: The bottom of the lower mold part (9) is provided with a lifting mechanism, and the lifting mechanism includes a push rod (31) that slides in the vertical direction and penetrates the lower mold part (9). When the push rod (31) is lowered to the lowest position, the top of the push rod (31) is flush with the bottom of the lower mold part (9), and the bottom of the push rod (31) is fixedly connected to a push plate (30).

8. The automobile bolt processing mold that is easy to demould according to any one of claims 1 to 7, characterized in that: A vertical plate (4) is provided between the top plate (1) and the bottom plate (5), and a support plate (6) is provided at the bottom of the bottom plate (5).

9. The automobile bolt processing mold that is easy to demould according to any one of claims 1 to 7, characterized in that: The punching mechanism comprises a cylinder (2) and a punching head (3).

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