A punch structure for a cold upset locking and strengthening connection

Abstract

The utility model discloses a kind of punch structures of cold upsetting reinforced connection of seal lock, including workbench, the top of workbench is fixedly installed with support frame, the top of support frame is fixedly installed with multiple hydraulic cylinders being arranged equidistantly, the bottom of multiple hydraulic cylinder telescopic end is fixedly installed with punch assembly, the top of workbench is fixedly installed with the lower die below punch assembly;The punch assembly includes butt joint and punch main body, the bottom of butt joint is provided with slot, two right-angle grooves are provided on the inner side wall of slot in annular equidistant, the outer side wall of punch main body is fixedly connected with the clamping block corresponding with right-angle groove, and punch main body is movably connected in the inside of slot;The punch structure of cold upsetting reinforced connection of seal lock can achieve the purpose that fragile part is separately and quickly replaced, cost is reduced, it is convenient to use, and punch part is overall quickly disassembled.

Description

Technical Field

[0001] This utility model relates to the field of cold heading technology, and specifically to a punch structure for cold heading reinforcement connection with sealing. Background Technology

[0002] A sealing block is a device used to ensure the safety of goods during railway transportation and prevent unauthorized opening or tampering. It can prevent goods from being illegally opened or tampered with during transportation, ensuring the integrity and safety of the goods. In the processing of sealing blocks, the head structure (such as bolts, screws, etc.) is usually processed by cold heading. The cold heading process achieves material deformation through high pressure forming in a mold, which has the characteristics of high steel utilization, high production efficiency, and high part dimensional accuracy.

[0003] The existing patent authorization announcement number CN220239948U discloses a cold heading machine for bolt processing. When it is necessary to replace the punch head, the fixing steel pin is loosened, the punch assembly is pushed, and the punch assembly slides left and right in the connecting slide until the corresponding punch head is selected. Then the fixing steel pin is locked to prevent it from loosening during use. This makes it convenient to adjust and replace the punch head during use. It is not only convenient to operate, but also very time-saving and labor-saving. In the aforementioned patent, multiple punches are fixedly connected by a connecting plate and fixed as a whole to the bottom of the connecting protrusion, making the multiple punches a single unit. Since the forming section of the punch head is a vulnerable part, it is inconvenient to replace a part of the punch head independently when it is damaged, which increases the cost of use and makes it more troublesome to use. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing a punch structure with a cold forging reinforcement and sealing, so as to facilitate the quick and easy replacement of vulnerable parts, reduce costs, facilitate use, and make it easy to quickly disassemble and assemble the punch as a whole. To achieve the above objectives, this utility model provides the following technical solution: a punch structure for cold forging and strengthening a sealing connection, comprising a worktable, a support frame fixedly mounted on the top of the worktable, a plurality of hydraulic cylinders equidistantly arranged fixedly mounted on the top of the support frame, punch assemblies fixedly mounted at the bottom of the telescopic ends of the plurality of hydraulic cylinders, and a lower die located below the punch assembly fixedly mounted on the top of the worktable; the punch assembly includes a connector and a punch body, a slot is provided at the bottom of the connector, and two right-angled grooves are equidistantly arranged in a ring on the inner sidewall of the slot. A locking block corresponding to a right-angle groove is fixedly connected to the outer wall of the punch body. The punch body is movably locked inside the slot, and the locking block is movably locked inside the right-angle groove. Circular grooves are opened on both the left and right sides of the connector. A sliding column is slidably installed inside each circular groove. A locking rod located in the right-angle groove is fixedly connected to the side of the sliding column near the slot. The locking rod is inserted into the locking block. A threaded sleeve is movably installed on the side of the circular groove away from the slot. A support spring located in the circular groove is movably sleeved on the outside of the sliding column. A pull rod is movably installed on the end of the sliding column away from the locking rod.

[0005] Preferably, a retaining ring is fixedly connected to the outer wall of the sliding column near the clamping rod, and the support spring is disposed between the retaining ring and the threaded sleeve.

[0006] Preferably, the threaded sleeve is threaded into the inside of the circular groove, and a hexagonal head is provided on the side of the threaded sleeve away from the clamp rod.

[0007] Preferably, the pull rod is threaded to the end of the slide column.

[0008] Preferably, the size of the right-angle groove is adapted to the card block, and the card rod is located at the end of the right-angle groove.

[0009] Preferably, the bottom of the hydraulic cylinder is fixedly connected to a mating sleeve, the top of the mating sleeve is fixedly connected to a threaded post, the top of the mating joint is provided with a threaded hole, the threaded post is threadedly connected to the inside of the threaded hole, and the left and right sides of the mating sleeve and the mating joint are provided with matching locking holes, and locking bolts are installed in the internal threads of the locking holes.

[0010] Preferably, the mating sleeve, mating joint, threaded post, and threaded hole are all disposed on the same axis.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. By pushing the pull rods on both sides of the connector outward, the sliding column in the circular groove slides towards the threaded sleeve, causing the locking rod to slide and disengage from the locking block. Then, the punch body is rotated to move the locking block along the right-angle groove and disengage, which facilitates the quick and independent replacement of its vulnerable parts and reduces maintenance costs.

[0012] 2. Insert the connector into the bottom of the mating sleeve to engage the threaded hole with the threaded post. Tighten the locking bolt into the locking hole that coincides with the outer side of the connector and the mating sleeve to strengthen the connection between the two, which facilitates quick fixing and disassembly of the connector and the lower part. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is an exploded view of the structure of the butt joint and the butt sleeve of this utility model when they are separated; Figure 3 This is a cross-sectional schematic diagram of the connection structure of the butt joint and the mating sleeve of this utility model; Figure 4 This is a schematic diagram of the right-angle groove of this utility model; Figure 5 This is a schematic diagram of the internal structure of the circular groove of this utility model.

[0014] In the diagram: 1. Workbench; 2. Support frame; 3. Hydraulic cylinder; 4. Punch assembly; 41. Connecting joint; 42. Slot; 43. Right-angle slot; 44. Punch body; 45. Locking block; 46. Circular slot; 47. Sliding column; 48. Locking rod; 49. Threaded sleeve; 410. Support spring; 411. Pull rod; 412. Connecting sleeve; 413. Threaded column; 414. Threaded hole; 415. Locking hole; 416. Locking bolt; 5. Lower die. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1 , Figure 3 , Figure 4 and Figure 5This utility model provides a technical solution: a punch structure for cold forging and strengthening connection, including a worktable 1, a support frame 2 fixedly installed on the top of the worktable 1, a plurality of hydraulic cylinders 3 equidistantly arranged fixedly installed on the top of the support frame 2, a punch assembly 4 fixedly installed at the bottom of the telescopic ends of the plurality of hydraulic cylinders 3, and a lower mold 5 located below the punch assembly 4 fixedly installed on the top of the worktable 1; the punch assembly 4 includes a connector 41 and a punch body 44, a slot 42 is provided at the bottom of the connector 41, two right-angle grooves 43 are provided in a ring at equal intervals on the inner side wall of the slot 42, a locking block 45 corresponding to the right-angle groove 43 is fixedly connected to the outer side wall of the punch body 44, the punch body 44 is movably engaged in the inside of the slot 42, the locking block 45 is movably engaged in the inside of the right-angle groove 43, and circular grooves 46 are provided on both the left and right sides of the connector 41, and sliding columns 47 are slidably installed in the inside of the circular grooves 46. 7. A locking rod 48 is fixedly connected to the side of the slot 42, which is located in the right-angle groove 43. The locking rod 48 is inserted into the inside of the locking block 45. A threaded sleeve 49 is movably installed on the side of the circular groove 46 away from the slot 42. A support spring 410 located in the circular groove 46 is movably sleeved on the outside of the sliding column 47. A pull rod 411 is movably installed on the end of the sliding column 47 away from the locking rod 48. By pushing the pull rods 411 on the left and right sides of the outside of the connector 41 outward, the pull rods 411 drive the sliding column 47 in the circular groove 46 to slide towards the threaded sleeve 49, compressing the support spring 410. The sliding column 47 drives the locking rod 48 to slide, causing the locking rod 48 to disengage from the locking block 45. Then, the punch body 44 is rotated, causing the locking block 45 to rotate along the right-angle groove 43 to the right angle, and the punch body 44 is pulled out downward. This facilitates the quick and independent replacement of the punch body 44, reduces maintenance costs, and allows for quick replacement of different punch bodies 44, improving efficiency.

[0017] A retaining ring is fixedly connected to the outer wall of the sliding column 47 near the clamping rod 48. The support spring 410 is set between the retaining ring and the threaded sleeve 49. When the sliding column 47 slides in the circular groove 46, the retaining ring can effectively limit the support spring 410, preventing the support spring 410 from shifting or falling off during compression or rebound. The threaded sleeve 49 provides a stable support surface for the support spring 410, so that the elastic potential energy of the support spring 410 can act more accurately on the sliding column 47, ensuring that the clamping rod 48 can always maintain a stable engagement with the clamping block 45 when it is not pulled by external force, thereby ensuring the connection stability of the punch body 44 during operation and preventing the impact on stamping accuracy and equipment operation safety due to loose connection.

[0018] The threaded sleeve 49 is threaded into the inside of the circular groove 46. A hexagonal head is provided on the side of the threaded sleeve 49 away from the clamp 48, which makes the replacement and maintenance of the support spring 410 more convenient. The support spring 410 can be inspected and replaced simply by unscrewing the threaded sleeve 49, which further improves the practicality and durability of the entire punch structure.

[0019] The pull rod 411 is threaded to the end of the slide column 47. The threaded connection between the pull rod 411 and the slide column 47 ensures the stability of the connection and also facilitates the removal of the pull rod 411 and the unscrewing of the threaded sleeve 49 for maintenance. This effectively improves the efficiency of disassembly and assembly and meets the needs of rapid maintenance and replacement in actual production processes.

[0020] The dimensions of the right-angle groove 43 are adapted to the locking block 45. The locking rod 48 is located at the end of the right-angle groove 43 and has an arc surface that matches the locking block 45. The contact surface between the arc surface and the locking block 45 is precision polished, which effectively reduces the frictional resistance during locking. Under the action of the support spring 410, the locking rod 48 can quickly and accurately lock with the locking block 45. At the same time, it avoids the jamming phenomenon caused by the rough contact surface, and further ensures the connection stability and smooth operation of the punch body 44 in frequent stamping operations.

[0021] Please see Figure 1 , Figure 2 and Figure 3 A mating sleeve 412 is fixedly connected to the bottom of the hydraulic cylinder 3. A threaded post 413 is fixedly connected to the top of the mating sleeve 412. A threaded hole 414 is opened on the top of the connector 41. The threaded post 413 is threaded into the inside of the threaded hole 414. Matching locking holes 415 are opened on both the left and right sides of the mating sleeve 412 and the connector 41. Locking bolts 416 are installed in the internal threads of the locking holes 415. The connector 41 is inserted into the mating sleeve 412 from the bottom, so that the threaded hole 414 and the threaded post are aligned. After aligning and fitting 413, rotate the connector 41, and the threaded post 413 will connect to the inside of the threaded hole 414, thereby completing the connection and fixation between the connector 41 and the mating sleeve 412. After the threaded post 413 and the threaded hole 414 are rotated and fixed, the locking hole 415 on the outside of the connector 41 will coincide with the locking hole 415 on the outside of the mating sleeve 412. Then, use the locking bolt 416 to screw into the locking hole 415 to strengthen the connection between the connector 41 and the mating sleeve 412, thereby facilitating the quick and easy fixing and disassembly of the connector 41.

[0022] The mating sleeve 412, mating joint 41, threaded post 413, and threaded hole 414 are all located on the same axis, which can effectively ensure that the force on each component is uniform during the mating process, avoid local stress concentration caused by installation deviation, thereby improving the stability and service life of the overall connection structure. It also facilitates the precise installation of the subsequent locking bolt 416 and ensures that the locking hole 415 can be accurately aligned.

[0023] Working principle: During installation and use, the connector 41 is inserted into the mating sleeve 412 from the bottom and the threaded hole 414 and threaded post 413 are aligned. Then, the connector 41 is rotated so that the threaded post 413 is connected to the inside of the threaded hole 414, thus completing the connection and fixation between the connector 41 and the mating sleeve 412. After the threaded post 413 and the threaded hole 414 are rotated and fixed, the locking hole 415 on the outside of the connector 41 coincides with the locking hole 415 on the outside of the mating sleeve 412. Then, the locking bolt 416 is screwed into the locking hole 415 to strengthen the connection between the connector 41 and the mating sleeve 412, thereby facilitating the quick fixing and disassembly of the connector 41. By placing the workpiece in the lower mold 5 and controlling the hydraulic cylinder 3 to drive the punch assembly 4 to descend, the workpiece is pressed and deformed for cold heading. When the punch body 44 is damaged, the pull rods 411 on the left and right sides of the connector 41 can be pushed outwards, causing the pull rods 411 to drive the sliding column 47 in the circular groove 46 to slide towards the threaded sleeve 49. During this process, the retaining ring on the outer wall of the circular groove 46 moves outwards synchronously, squeezing the support spring 410 located between it and the threaded sleeve 49. The sliding of the sliding column 47 causes the locking rod 48 to slide out of the locking block 45. Then, the punch body 44 is rotated, causing the locking block 45 to rotate along the right-angle groove 43 to the right angle and pull the punch body 44 downwards. The above steps are repeated to reinstall other punch bodies 44. The support spring 410 pushes the sliding column 47 to drive the locking rod 48 to slide and re-lock into the locking block 45 to limit the punch body 44, which facilitates the quick replacement of the punch body 44. The above is the working process of the whole device. All contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A punch structure for cold forging and strengthening connection by sealing, comprising a worktable (1), wherein a support frame (2) is fixedly mounted on the top of the worktable (1), characterized in that: The top of the support frame (2) is fixedly installed with multiple hydraulic cylinders (3) arranged at equal intervals. The bottom of the telescopic ends of the multiple hydraulic cylinders (3) is fixedly installed with punch assembly (4). The top of the worktable (1) is fixedly installed with a lower mold (5) located below the punch assembly (4). The punch assembly (4) includes a connector (41) and a punch body (44). A slot (42) is provided at the bottom of the connector (41). Two right-angled slots (43) are equidistantly spaced in a ring on the inner wall of the slot (42). A locking block (45) corresponding to the right-angled slot (43) is fixedly connected to the outer wall of the punch body (44). The punch body (44) is movably engaged inside the slot (42), and the locking block (45) is movably engaged inside the right-angled slot (43). Circular slots (45) are provided on both the left and right sides of the connector (41). 6) Sliding pins (47) are slidably installed inside the circular groove (46). A locking rod (48) located in the right angle groove (43) is fixedly connected to the side of the sliding pin (47) near the slot (42). The locking rod (48) is inserted into the inside of the locking block (45). A threaded sleeve (49) is movably installed on the side of the circular groove (46) away from the slot (42). A support spring (410) located in the circular groove (46) is movably sleeved on the outside of the sliding pin (47). A pull rod (411) is movably installed on the end of the sliding pin (47) away from the locking rod (48).

2. The punch structure for cold heading reinforcement connection according to claim 1, characterized in that: A retaining ring is fixedly connected to the outer wall of the sliding column (47) near the clamp rod (48), and the support spring (410) is disposed between the retaining ring and the threaded sleeve (49).

3. The punch structure for cold heading reinforcement connection according to claim 1, characterized in that: The threaded sleeve (49) is threaded into the inside of the circular groove (46), and a hexagonal head is provided on the side of the threaded sleeve (49) away from the clasp (48).

4. The punch structure for cold heading reinforcement connection according to claim 1, characterized in that: The pull rod (411) is threaded to the end of the slide (47).

5. The punch structure for cold heading reinforcement connection according to claim 1, characterized in that: The dimensions of the right-angle groove (43) are adapted to the card block (45), and the card rod (48) is located at the end of the right-angle groove (43).

6. The punch structure for cold heading reinforcement connection according to claim 1, characterized in that: The bottom of the hydraulic cylinder (3) is fixedly connected to a mating sleeve (412), and the top of the mating sleeve (412) is fixedly connected to a threaded column (413). The top of the connector (41) is provided with a threaded hole (414), and the threaded column (413) is threadedly connected to the inside of the threaded hole (414). The left and right sides of the mating sleeve (412) and the connector (41) are provided with matching locking holes (415), and the locking holes (415) are threaded with locking bolts (416).

7. The punch structure for cold heading reinforcement connection according to claim 6, characterized in that: The mating sleeve (412), mating joint (41), threaded post (413), and threaded hole (414) are all located on the same axis.

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