Hydraulic locking mechanism for punching die seat

Abstract

The utility model relates to a die making base hydraulic locking mechanism which comprises a first locking oil cylinder, a bottom plate, a first wedge-shaped block and a second wedge-shaped block opposite to the first wedge-shaped block, the bottom plate is detachably installed on a machine body of a cold header, a locking groove is formed in the bottom plate, and the second wedge-shaped block is detachably installed at the bottom of a die making base; and the first wedge-shaped block and the second wedge-shaped block are accommodated in the locking groove. According to the designed hydraulic locking mechanism for the punching base, the first wedge-shaped block and the second wedge-shaped block installed at the bottom of the punching base are driven by the first locking oil cylinder to achieve wedge-caulking in the bottom plate locking groove, precise control and matching are achieved in combination with the base plate installation part, the limiting protrusion, the clamping groove and other structures, and the two ends of the punching base can be selectively locked; therefore, the locking reliability, the positioning precision and the overall rigidity of the die making base are improved, the stability of cold heading machining is guaranteed, and rapid die replacement is facilitated.

Description

Technical Field

[0001] This application relates to the field of cold heading machine technology, and in particular to a hydraulic locking mechanism for a die-forming base. Background Technology

[0002] In existing technologies, cold heading machines are key pieces of equipment widely used in the field of metal plastic forming. They apply strong impact or pressure to metal blanks through molds, causing them to undergo plastic deformation, thereby obtaining parts of the required shape and size. During the cold heading process, the die holder (or die holder) is the core component that supports and fixes the die. Its installation stability, locking reliability, and ease of replacement directly affect the accuracy of cold heading, die life, production efficiency, and equipment safety.

[0003] To securely mount the die holder onto the body of the cold heading machine and withstand the enormous working load, mechanical methods such as bolt tightening or manual wedge clamping are commonly used for locking. For example, directly fixing the die holder to the machine body with multiple high-strength bolts requires tightening or loosening each bolt or adjusting the wedges individually when changing the die. This operation is cumbersome and time-consuming. Furthermore, for large cold heading machines, the required locking force is enormous, and manual operation cannot guarantee sufficient and consistent locking force. Utility Model Content

[0004] To address the aforementioned issues, this application provides a hydraulic locking mechanism for the mold-making base that facilitates rapid mold changing.

[0005] To achieve the above objectives, this application designs a hydraulic locking mechanism for a die-forming base, applied to a cold heading machine. It includes a first locking cylinder, a base plate, a first wedge block, and a second wedge block opposite to the first wedge block. The base plate is detachably mounted on the body of the cold heading machine and has a locking groove. The second wedge block is detachably mounted on the bottom of the die-forming base. The first and second wedge blocks are housed within the locking groove, and the opposing sides of the first and second wedge blocks respectively contact different inner walls of the locking groove. The first locking cylinder is fixedly mounted on the body of the cold heading machine, and the piston rod of the first locking cylinder extends into the locking groove and is connected and fixed to the first wedge block, so as to drive the first wedge block to move between a locked position and a released position in the locking groove; wherein, in the locked position, the wedge surfaces of the first wedge block and the second wedge block are in contact, and their opposite sides press against the inner wall of the locking groove to form a locking fit; in the released position, a movable gap is formed between the wedge surfaces of the first wedge block and the second wedge block.

[0006] Preferably, a pad is fixedly installed on the front side of the molding base, and a mounting part is protruding from the bottom edge of the pad. The bottom plate has a notch on one side edge facing the mounting part, and the notch cooperates with the mounting part to jointly define the locking groove.

[0007] Preferably, the mounting part has a plurality of limiting protrusions on the side facing the base plate, the plurality of limiting protrusions extending vertically and arranged at intervals along the axial direction of the piston rod of the first locking cylinder; the second wedge block has a groove that cooperates with each of the limiting protrusions.

[0008] Preferably, a wedge cover plate is provided on the upper surface of the base plate, and the wedge cover plate covers the top opening of the notch; a positioning groove is provided on the bottom of the die-casting base corresponding to the position of the wedge cover plate, and the wedge cover plate is adapted to be accommodated in the positioning groove.

[0009] Preferably, the axial direction of the piston rod of the first locking cylinder is parallel to the length direction of the die-casting base.

[0010] Preferably, it further includes two opposing third wedge blocks and two second locking cylinders that drive the two third wedge blocks to move respectively. The second locking cylinders are fixedly installed on the body of the cold heading machine. The die-forming base is provided with wedge surfaces at both ends in its length direction, and each wedge surface is adapted to form a locking engagement with one of the third wedge blocks respectively.

[0011] Preferably, the locking engagement between the third wedge block and the wedge surface is achieved by forming a wedge groove between the wedge surface and the body of the cold heading machine, wherein the third wedge block is housed in the wedge groove and engages with the wedge surface under the drive of the second locking cylinder to achieve locking.

[0012] The hydraulic locking mechanism for the die-forming base designed in this application drives the first wedge block and the second wedge block installed at the bottom of the die-forming base to achieve wedge clamping in the locking groove of the base plate through the first locking cylinder. Combined with the pad mounting part, the limiting protrusion and the slot, etc., the mechanism is precisely controlled and coordinated. The die-forming base can also be locked at both ends, thereby improving the locking reliability, positioning accuracy and overall rigidity of the die-forming base, ensuring the stability of cold heading, and facilitating quick die change. Attached Figure Description

[0013] Figure 1 This is an assembly diagram of the hydraulic locking mechanism for the mold base provided in the embodiments of this application.

[0014] Figure 2 yes Figure 1 A three-dimensional exploded view.

[0015] Figure 3This is a three-dimensional structural schematic diagram of the hydraulic locking mechanism for the mold base provided in the embodiments of this application.

[0016] Figure 4 This is a three-dimensional structural schematic diagram of the hydraulic locking mechanism for the mold base provided in the embodiments of this application from another perspective.

[0017] Figure 5 This is a planar structural schematic diagram of the hydraulic locking mechanism for the mold base provided in the embodiments of this application.

[0018] Figure 6 yes Figure 5 Sectional view at point AA.

[0019] The components include: a first locking cylinder 10, a base plate 20, a first wedge block 30, a second wedge block 40, a die-casting base 50, a positioning groove 51, a wedge surface 52, a wedge groove 53, a pad 60, a mounting part 61, a limiting protrusion 62, a wedge block cover plate 70, a second locking cylinder 80, a third wedge block 90, and a machine body 100. Detailed Implementation

[0020] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0021] like Figures 1 to 6 As shown in the figure, this application embodiment provides a hydraulic locking mechanism for a die-forming base, applied to a cold heading machine. This mechanism is mainly used to reliably lock the die-forming base 50 onto the body 100 of the cold heading machine.

[0022] Specifically, the hydraulic locking mechanism of the die-forming base mainly includes a first locking cylinder 10, a base plate 20, a first wedge block 30, and a second wedge block 40 opposite to the first wedge block 30. The base plate 20 is detachably mounted on the body 100 of the cold heading machine, and a locking groove 21 is provided on the base plate 20. The second wedge block 40 is detachably mounted on the bottom of the die-forming base 50. The first wedge block 30 and the second wedge block 40 are housed in the locking groove 21, and the opposite sides of the first wedge block 30 and the second wedge block 40 respectively contact different inner walls of the locking groove 21. The first locking cylinder 10 is fixedly mounted on the body 100 of the cold heading machine, and the first... The piston rod of the locking cylinder 10 extends into the locking groove 21 and is connected and fixed to the first wedge block 30 to drive the first wedge block 30 to move between a locked position and a released position within the locking groove 21. In the locked position, the wedge surfaces of the first wedge block 30 and the second wedge block 40 are in contact, and their opposite sides press against the inner wall of the locking groove 21 to form a locking fit. In the released position, a movable gap is formed between the wedge surfaces of the first wedge block 30 and the second wedge block 40.

[0023] Using the above structure, during operation, for example: when it is necessary to lock the die-casting base 50, the piston rod of the first locking cylinder 10 extends and drives the first wedge block 30 to move to the locking position. During this process, the wedge surface of the first wedge block 30 and the wedge surface of the second wedge block 40 slide relative to each other and press against each other. Due to the action of the wedge surface, the first wedge block 30 and the second wedge block 40 are spread apart in a direction perpendicular to their movement, so that their opposite sides press tightly against the inner groove wall of the locking groove 21, forming a firm locking fit, thereby locking the die-casting base 50 (indirectly through the base plate 20) with the second wedge block 40 installed on it onto the machine body 100. When it is necessary to loosen the die holder 50 (for example, to change the die), the piston rod of the first locking cylinder 10 moves in the opposite direction, driving the first wedge block 30 to move to the loosened position. At this time, the clamping force between the wedge surface of the first wedge block 30 and the wedge surface of the second wedge block 40 is released, and an active gap is formed between the two. The top pressure between their opposing sides and the inner wall of the locking groove 21 also disappears. The locking fit is released, and the die holder 50 can be easily moved out or adjusted.

[0024] In some embodiments, such as Figure 3 , Figure 4As shown, a pad 60 is fixedly installed on the front side of the die-casting base 50. A mounting portion 61 protrudes from the bottom edge of the pad 60. A notch 22 is formed on the edge of the base plate 20 facing the mounting portion 61. The notch 22 mates with the mounting portion 61 to define the locking groove 21. That is, in the assembled state, the notch 22 of the base plate 20 and the mounting portion 61 of the pad 60 cooperate to enclose and define the locking groove 21. This makes part of the locking groove 21 formed by the base plate 20 and the other part by the mounting portion 61 of the pad 60 on the die-casting base 50 side, resulting in a more compact structure.

[0025] In some embodiments, such as Figure 4 , Figure 5 As shown, the mounting part 61 has a plurality of limiting protrusions 62 protruding on the side facing the base plate 20. These limiting protrusions 62 extend vertically and are spaced apart along the axial direction of the piston rod of the first locking cylinder 10. The second wedge block 40 has slots that mate with each of the limiting protrusions 62. During installation, the slots of the second wedge block 40 engage with the limiting protrusions 62 on the mounting part 61, thereby guiding and limiting the second wedge block 40, preventing it from shifting along the arrangement direction of the limiting protrusions 62 or rotating around the vertical axis. Furthermore, the engagement of the slots with the limiting protrusions 62 makes installation more convenient than using bolts or other fasteners.

[0026] In some embodiments, such as Figure 6 As shown, a wedge cover plate 70 is provided on the upper surface of the base plate 20, and the wedge cover plate 70 covers the top opening of the notch 22; a positioning groove 51 is formed on the bottom of the die-casting base 50 corresponding to the position of the wedge cover plate 70, and the wedge cover plate 70 is adapted to be accommodated in the positioning groove 51. When the die-casting base 50 is installed in place, the wedge cover plate 70 can be accommodated in the positioning groove 51, which not only plays a sealing role to prevent the movement of the first wedge block 30 from wearing the die-casting base 50, but also assists in the positioning of the die-casting base 50 during installation, making assembly easier.

[0027] In some embodiments, such as Figure 3 , Figure 5 As shown, the axial direction of the piston rod of the first locking cylinder 10 is parallel to the length direction of the die-casting base 50. This structure allows the first wedge block 30 and the second wedge block 40 to be made relatively long, thus facilitating force transmission and ensuring a stable lock.

[0028] In some embodiments, such as Figures 1 to 4As shown, it also includes two opposing third wedge blocks 90 and two second locking cylinders 80 that drive the two third wedge blocks 90 to move respectively. The second locking cylinders 80 are fixedly installed on the body 100 of the cold heading machine. The die-forming base 50 is provided with wedge surfaces 52 at both ends in its length direction. Each wedge surface 52 is adapted to form a locking engagement with one of the third wedge blocks 90 respectively.

[0029] In specific implementation, such as Figure 1 As shown, the locking engagement between the third wedge block 90 and the wedge surface 52 is such that a wedge groove 53 is formed between the wedge surface 52 and the body 100 of the cold heading machine. The third wedge block 90 is housed in the wedge groove 53 and, driven by the second locking cylinder 80, engages with the wedge surface 52 to achieve locking.

[0030] Thus, a wedge groove 53 is formed between the wedge-shaped surfaces 52 at each end of the die-forming base 50 and the corresponding parts of the body 100 of the cold heading machine, which can accommodate the additional second wedge block 80. When the additional second locking cylinder 90 drives the additional second wedge block 80 into this wedge groove and wedges it tightly with the wedge-shaped surfaces 52 of the die-forming base 50 and the corresponding contact surfaces of the body 100, a locking force is applied to the end of the die-forming base 50, effectively preventing the die-forming base 50 from displacing or vibrating in the length direction.

[0031] The hydraulic locking mechanism for the die-forming base provided in this application embodiment drives the first wedge block and the second wedge block installed at the bottom of the die-forming base to achieve wedge clamping in the locking groove of the base plate through the first locking cylinder. Combined with the pad mounting part, the limiting protrusion and the slot, etc., the mechanism is precisely controlled and coordinated. The two ends of the die-forming base can be locked, thereby improving the locking reliability, positioning accuracy and overall rigidity of the die-forming base, ensuring the stability of cold heading processing, and facilitating quick die change.

[0032] In the description of this application, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] Finally, it should be noted that the above descriptions are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A hydraulic locking mechanism for a die-setting base, applied to a cold heading machine, characterized in that, The assembly includes a first locking cylinder, a base plate, a first wedge block, and a second wedge block opposite to the first wedge block. The base plate is detachably mounted on the body of the cold heading machine and has a locking groove. The second wedge block is detachably mounted on the bottom of the die-forming base. The first and second wedge blocks are housed within the locking groove, and their opposite sides contact different inner walls of the locking groove. The first locking cylinder is fixedly mounted on the... On the body of the cold heading machine, the piston rod of the first locking cylinder extends into the locking groove and is connected and fixed to the first wedge block, so as to drive the first wedge block to move between a locked position and a released position in the locking groove; wherein, in the locked position, the wedge surfaces of the first wedge block and the second wedge block are in contact, and their opposite sides press against the inner groove wall of the locking groove to form a locking fit; in the released position, a movable gap is formed between the wedge surfaces of the first wedge block and the second wedge block.

2. The hydraulic locking mechanism for the die-casting base according to claim 1, characterized in that, A pad is fixedly installed on the front side of the molding base. A mounting part is protruding from the bottom edge of the pad. A notch is opened on the side edge of the base plate facing the mounting part. The notch and the mounting part cooperate to define the locking groove.

3. The hydraulic locking mechanism for the die-casting base according to claim 2, characterized in that, The mounting part has a plurality of limiting protrusions on the side facing the base plate. The plurality of limiting protrusions extend vertically and are arranged at intervals along the axial direction of the piston rod of the first locking cylinder. The second wedge block has a groove that cooperates with each of the limiting protrusions.

4. The hydraulic locking mechanism for the die-casting base according to claim 2, characterized in that, A wedge cover plate is provided on the upper surface of the base plate, and the wedge cover plate covers the top opening of the notch; a positioning groove is provided on the bottom of the die-casting base corresponding to the position of the wedge cover plate, and the wedge cover plate is adapted to be accommodated in the positioning groove.

5. The hydraulic locking mechanism for the die-casting base according to any one of claims 1-4, characterized in that, The axial direction of the piston rod of the first locking cylinder is parallel to the length direction of the die-casting base.

6. The hydraulic locking mechanism for the die-casting base according to claim 5, characterized in that, It also includes two opposing third wedge blocks and two second locking cylinders that drive the two third wedge blocks to move respectively. The second locking cylinders are fixedly installed on the body of the cold heading machine. The die-forming base is provided with wedge surfaces at both ends in its length direction. Each wedge surface is adapted to form a locking engagement with one of the third wedge blocks respectively.

7. The hydraulic locking mechanism for the die-casting base according to claim 6, characterized in that, The locking engagement between the third wedge block and the wedge surface is achieved by forming a wedge groove between the wedge surface and the body of the cold heading machine. The third wedge block is housed in the wedge groove and engages with the wedge surface under the drive of the second locking cylinder to achieve locking.

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