Square tube punching device

Abstract

The utility model discloses a square tube punching device which comprises a workbench, a portal frame is arranged on the top face of the workbench, a baffle is arranged at one end of the workbench, a guide rod is fixedly connected to the side face, close to the portal frame, of the baffle, a mold core is fixedly connected to the top end of the guide rod, a punching assembly is fixedly connected to a cross beam of the portal frame, and a lower module is arranged under the punching assembly. A punching hole matched with the punching assembly is formed in the lower module; a guide hole for guiding the square tube is formed in the lower module, and the mold core is suspended in the guide hole; clamping assemblies are arranged on the two sides of the guide hole and comprise first clamping plates and second clamping plates, the first clamping plates and the second clamping plates are located on the two sides of the guide hole, and a driving unit used for driving the first clamping plates and the second clamping plates to move reversely is further arranged on the side wall of the lower module. According to the square tube punching device, a square tube can be centered, clamped and fixed, the center line of the square tube and the center line of the mold core are aligned, the square tube punching device is suitable for punching square tubes with different widths, and the applicability and the punching precision of the device are improved.

Description

Technical Field

[0001] This utility model relates to the field of square tube production equipment technology, and in particular to a square tube punching device. Background Technology

[0002] Square tube is a type of rectangular tubing, meaning a steel pipe with equal side lengths, typically made from strip steel or steel plate through a rolling process. Square tubes are widely used in various fields such as construction, machinery, chemical industry, and automotive. They are often used as structural support materials; punching allows them to be connected to other components, such as by bolting or welding, thus creating a stable structural system. A square tube punching device is usually used when punching square tubes.

[0003] Existing square tube punching devices typically use a fixed-size core inserted into the square tube for positioning and support. Then, a punch is moved down to punch holes in the tube. This method of positioning the core requires a certain gap between the core and the inner wall of the square tube to facilitate insertion. During the production process, due to tolerances and other factors, the internal dimensions of the square tube may vary within a certain range, meaning that the internal dimensions of different square tubes are not completely consistent. Therefore, after the core is inserted into the square tube, the gap between the two may be too large, making it difficult to align the centerlines of the square tube and the core. During the punching process, especially during continuous punching, the position of the hole may deviate, thus affecting the production quality of the square tube.

[0004] Therefore, it is necessary to develop a square tube punching device to address the aforementioned defects. Utility Model Content

[0005] The purpose of this invention is to provide a square tube punching device that can clamp and fix the square tube in the center, align the center line of the square tube and the core, and is suitable for punching square tubes of different widths, thus improving the applicability and punching accuracy of the device.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model discloses a square tube punching device, comprising a workbench, a gantry frame fixedly connected to the top surface of the workbench, a baffle fixedly connected to one end of the workbench, a guide rod horizontally fixedly connected to the side of the baffle near the gantry frame, a core fixedly connected to the top of the guide rod, a punching assembly fixedly connected to the crossbeam of the gantry frame, a lower module disposed directly below the punching assembly, a punching hole vertically penetrating the top surface of the lower module to cooperate with the punching assembly, a guide hole penetrating the side wall of the lower module to guide the square tube to be punched, the guide hole communicating with the punching hole, the core being suspended in the guide hole and penetrating through a through hole to cooperate with the punching hole, clamping assemblies disposed on both sides of the guide hole, the clamping assemblies comprising a first clamping plate and a second clamping plate slidably connected to both ends of the side wall of the lower module, the first clamping plate and the second clamping plate being located on both sides of the guide hole, and a driving unit fixedly connected to the side wall of the lower module, the driving unit being used to drive the first clamping plate and the second clamping plate to move in opposite directions.

[0008] Furthermore, the punching assembly includes a hydraulic cylinder, which is fixedly connected to the top surface of the gantry beam. The telescopic end of the hydraulic cylinder passes through the gantry beam and is fixedly connected to a movable plate. A punching head is fixedly connected to the bottom surface of the movable plate, and the punching head cooperates with the punching.

[0009] Furthermore, a sliding cylinder is fixedly connected to both ends of the bottom surface of the movable plate, and a through hole is vertically opened at both ends of the movable plate, with the sliding cylinder coaxially connected to the through hole; a guide rod is vertically fixedly connected to both ends of the top surface of the workbench, and the guide rod is slidably connected to the sliding cylinder.

[0010] Furthermore, the drive unit includes a threaded rod, and a threaded hole is formed at one end of the second clamping plate away from the guide hole. One end of the threaded rod is threadedly connected to the threaded hole. A connecting seat is fixedly connected to the side wall of the lower module near the second clamping plate, and the other end of the threaded rod is rotatably connected to the connecting seat. A first rack is fixedly connected to both ends of the first clamping plate near the second clamping plate, and a second rack is fixedly connected to both ends of the second clamping plate near the first clamping plate. A first sliding groove is formed at both ends of the first clamping plate and the second clamping plate. The second rack is slidably connected to the first sliding groove on the first clamping plate, and the first rack is slidably connected to the first sliding groove on the second clamping plate. The first rack and the second rack located at the same end are connected by gear transmission, and the gear is rotatably connected to the side wall of the lower module.

[0011] Furthermore, limit rings are fixedly connected to the outer walls of the threaded rods on both sides of the connecting seat, and the limit rings are slidably connected to the side walls of the connecting seat.

[0012] Furthermore, a handwheel is fixedly connected to the end of the threaded rod away from the threaded hole.

[0013] Furthermore, the lower module is fixedly connected to horizontally arranged guide rails at both ends, and the side walls at both ends of the first clamping plate and the second clamping plate are respectively provided with second sliding grooves adapted to the guide rails. The first clamping plate and the second clamping plate are slidably connected to the guide rails through the second sliding grooves.

[0014] Furthermore, rollers are rotatably connected to the side walls of the first clamping plate and the second clamping plate that are close to each other, and the outer walls of the rollers are covered with rubber pads.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] This utility model uses the first and second clamping plates of the clamping assembly to clamp and fix the square tube in the guide hole. The driving unit can drive the first and second clamping plates to move in opposite directions at the same time, so that the square tube can be clamped and fixed in the center at the same time, aligning the center line of the square tube and the core. It is suitable for punching square tubes of different widths, improving the applicability and punching accuracy of the device. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a three-dimensional structural diagram of the square tube punching device of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the lower module of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the clamping component of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the clamping component of this utility model when disassembled.

[0022] Explanation of reference numerals in the attached drawings: 1. Workbench; 2. Gantry frame; 3. Punching assembly; 301. Hydraulic cylinder; 302. Moving plate; 303. Punching head; 304. Slide cylinder; 305. Guide rod; 4. Lower module; 5. Guide hole; 6. Clamping assembly; 601. First clamping plate; 602. Second clamping plate; 603. Threaded rod; 604. Threaded hole; 605. Connecting seat; 606. First rack; 607. Second rack; 608. First slide groove; 609. Gear; 610. Limiting ring; 611. Guide rail; 612. Second slide groove; 613. Roller; 614. Rubber pad; 615. Handwheel; 7. Punching; 8. Square tube; 9. Baffle; 10. Guide rod; 11. Core. Detailed Implementation

[0023] The core of this utility model is to provide a square tube punching device that can clamp and fix square tubes of different sizes in a centered manner, accurately position the center line of the square tube, and improve the applicability and punching efficiency of the device.

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. 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.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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 utility model 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 utility model.

[0026] In one specific implementation, such as Figures 1-4 As shown, the system includes a workbench 1, with a baffle 9 fixedly connected to one end. A guide rod 10 is horizontally fixedly connected to the side of the baffle 9 near the gantry frame 2. A core 11 is fixedly connected to the top of the guide rod 10. A punching assembly 3 is fixedly connected to the crossbeam of the gantry frame 2. A lower module 4 is located directly below the punching assembly 3. A punching hole 7 that mates with the punching assembly 3 is vertically opened through the top surface of the lower module 4. A guide hole 5 that guides the square tube 8 to be punched is opened through the side wall of the lower module 4. The guide hole 5 and the punching hole 7 are connected through the lower module 4. 7. The core 11 is suspended in the guide hole 5; the core 11 is also provided with a through hole that is coaxial with the punch 7; clamping components 6 are provided on both sides of the guide hole 5. The clamping components 6 include a first clamping plate 601 and a second clamping plate 602 that are slidably connected to both ends of the side wall of the lower module 4. The first clamping plate 601 and the second clamping plate 602 are located on both sides of the guide hole 5. A driving unit is also fixedly connected to the side wall of the lower module 4. The driving unit is used to drive the first clamping plate 601 and the second clamping plate 602 to move in opposite directions.

[0027] In one specific embodiment, the punching assembly 3 includes a hydraulic cylinder 301, which is fixedly connected to the top surface of the crossbeam of the gantry frame 2. The telescopic end of the hydraulic cylinder 301 passes through the crossbeam of the gantry frame 2 and is fixedly connected to a movable plate 302. A punching head 303 is fixedly connected to the bottom surface of the movable plate 302, and the punching head 303 cooperates with the punching 7.

[0028] Hydraulic cylinder 301 serves as the power source, driving punch head 303 to move up and down. Moving plate 302 is connected to the telescopic end of hydraulic cylinder 301, driving punch head 303 to move up and down linearly. Punching head 303 directly acts on square tube 8 to complete the punching operation.

[0029] In one specific embodiment, a slide cylinder 304 is fixedly connected to both ends of the bottom surface of the movable plate 302. A through hole is vertically opened at both ends of the movable plate 302, and the slide cylinder 304 is coaxially connected to the through hole. A guide rod 305 is vertically fixedly connected to both ends of the top surface of the workbench 1. The guide rod 305 is slidably connected to the slide cylinder 304, which can ensure the stable movement of the movable plate 302 in the vertical direction and improve the punching accuracy of the punching head 303.

[0030] In one specific embodiment, the drive unit includes a threaded rod 603, a threaded hole 604 is provided at the end of the second clamping plate 602 away from the guide hole 5, one end of the threaded rod 603 is threadedly connected to the threaded hole 604, a connecting seat 605 is fixedly connected to the side wall of the lower module 4 near the second clamping plate 602, and the other end of the threaded rod 603 is rotatably connected to the connecting seat 605; a first rack 606 is fixedly connected to both ends of the first clamping plate 601 near the second clamping plate 602, and the second clamping plate 602 is fixedly connected to the first rack 606 near the first rack 5. A second rack 607 is fixedly connected to both ends of one side of the clamping plate 601; a first groove 608 is opened at both ends of the first clamping plate 601 and the second clamping plate 602 respectively; the second rack 607 is slidably connected to the first groove 608 on the first clamping plate 601; the first rack 606 is slidably connected to the first groove 608 on the second clamping plate 602; the first rack 606 and the second rack 607 located at the same end are connected by a gear 609, and the gear 609 is rotatably connected to the side wall of the lower module 4.

[0031] Driven by an external power source, the threaded rod 603 rotates. Due to the friction and pressure of the inclined surface of the thread, the threaded rod 603 moves axially along the threaded hole 604, thereby pushing or pulling the second clamping plate 602. When the movement of the second clamping plate 602 drives the second rack 607 to move, the meshing of the gear 609 drives the first rack 606 to move in the opposite direction. This transmission method achieves synchronous and relative movement of the first clamping plate 601 and the second clamping plate 602.

[0032] Specifically, limit rings 610 are fixedly connected to the outer walls of the threaded rods 603 on both sides of the connecting seat 605, and the limit rings 610 are slidably connected to the side walls of the connecting seat 605. This allows the threaded rods 603 to rotate freely within the connecting seat 605 without axial movement, thereby ensuring that the threaded rods 603 can smoothly drive the second clamping plate 602 to move.

[0033] Specifically, a handwheel 615 is fixedly connected to the end of the threaded rod 603 away from the threaded hole 604. This facilitates manual operation of the threaded rod 603 and improves the ease of use of the device.

[0034] In one specific embodiment, horizontally arranged guide rails 611 are fixedly connected to both ends of the lower module 4. Second sliding grooves 612, adapted to the guide rails 611, are respectively formed on the side walls of the first clamping plate 601 and the second clamping plate 602 at both ends. The first clamping plate 601 and the second clamping plate 602 are slidably connected to the guide rails 611 through the second sliding grooves 612. The second sliding grooves 612 and the guide rails 611 ensure stable sliding of the first clamping plate 601 and the second clamping plate 602, improving the clamping accuracy and reliability.

[0035] In one specific embodiment, rollers 613 are rotatably connected to the sidewalls of the first clamping plate 601 and the second clamping plate 602 that are close to each other. Rubber pads 614 are wrapped around the outer walls of the rollers 613. The rollers 613 reduce friction between the first clamping plate 601 and the second clamping plate 602 and the square tube 8, thus reducing resistance during the movement of the square tube 8. The rubber pads 614 provide better anti-slip and cushioning effects, protecting the surface of the square tube 8 from damage.

[0036] The working principle of this utility model is as follows: When using the square tube punching device, the square tube 8 to be punched is aligned and placed into the guide hole 5 on the lower module 4 and sleeved on the core 11. The operator manually rotates the handwheel 615 to drive the threaded rod 603 to rotate. Through the cooperation with the threaded hole 604, the rotation of the threaded rod 603 is converted into the axial movement of the second clamping plate 602, driving the second clamping plate 602 to slide towards the square tube 8. As the second clamping plate 602 moves, through the meshing action of the gear 609, the first clamping plate 601 is driven to move in the opposite direction, thereby clamping and fixing the square tube 8 in the center with the second clamping plate 602, aligning the center line of the square tube 8 and the core 11. Finally, the hydraulic cylinder 301 is activated, and the extension end of the hydraulic cylinder 301 drives the punching head 303 to descend. The punching head 303 gradually approaches and finally penetrates the square tube 8, completing the punching operation. After punching is completed, the hydraulic cylinder 301 retracts, causing the punching head 303 to rise and leave the square tube 8. The operator can then remove the punched square tube 8 by rotating the handwheel 615 in the opposite direction to separate the first clamping plate 601 and the second clamping plate 602.

[0037] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0038] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A square tube punching device, comprising a workbench (1), a gantry frame (2) fixedly connected to the top surface of the workbench (1), a baffle (9) fixedly connected to one end of the workbench (1), a guide rod (10) horizontally fixedly connected to the side of the baffle (9) near the gantry frame (2), and a core (11) fixedly connected to the top end of the guide rod (10), characterized in that: A punching assembly (3) is fixedly connected to the crossbeam of the gantry frame (2). A lower module (4) is provided directly below the punching assembly (3). The top surface of the lower module (4) has a vertically penetrating punch (7) that mates with the punching assembly (3). The side wall of the lower module (4) has a guide hole (5) that guides the square tube (8) to be punched. The guide hole (5) communicates with the punch (7). The core (11) is suspended in the guide hole (5) and has a penetrating punch (7) that mates with the punch (7). The guide hole (5) has a through hole; clamping components (6) are provided on both sides of the guide hole (5). The clamping components (6) include a first clamping plate (601) and a second clamping plate (602) slidably connected to both ends of the side wall of the lower module (4). The first clamping plate (601) and the second clamping plate (602) are located on both sides of the guide hole (5). A driving unit is also fixedly connected to the side wall of the lower module (4). The driving unit is used to drive the first clamping plate (601) and the second clamping plate (602) to move in opposite directions.

2. The square tube punching device according to claim 1, characterized in that: The punching assembly (3) includes a hydraulic cylinder (301), which is fixedly connected to the top surface of the crossbeam of the gantry frame (2). The telescopic end of the hydraulic cylinder (301) passes through the crossbeam of the gantry frame (2) and is fixedly connected to a moving plate (302). A punching head (303) is fixedly connected to the bottom surface of the moving plate (302), and the punching head (303) cooperates with the punch (7).

3. The square tube punching device according to claim 2, characterized in that: Both ends of the bottom surface of the movable plate (302) are fixedly connected to the slide cylinder (304), and the two ends of the movable plate (302) are vertically provided with through holes. The slide cylinder (304) is coaxially connected to the through holes. Both ends of the top surface of the worktable (1) are vertically fixedly connected to the guide rod (305), and the guide rod (305) is slidably connected to the slide cylinder (304).

4. The square tube punching device according to claim 1, characterized in that: The drive unit includes a threaded rod (603), and a threaded hole (604) is provided at one end of the second clamping plate (602) away from the guide hole (5). One end of the threaded rod (603) is threadedly connected to the threaded hole (604). A connecting seat (605) is fixedly connected to the side wall of the lower module (4) near the second clamping plate (602), and the other end of the threaded rod (603) is rotatably connected to the connecting seat (605). A first rack (606) is fixedly connected to both ends of the first clamping plate (601) near the second clamping plate (602), and the second clamping plate (602) is close to the first clamping plate. (601) A second rack (607) is fixedly connected to both ends on one side; a first groove (608) is opened at both ends of the first clamping plate (601) and the second clamping plate (602); the second rack (607) is slidably connected to the first groove (608) on the first clamping plate (601); the first rack (606) is slidably connected to the first groove (608) on the second clamping plate (602); the first rack (606) and the second rack (607) located at the same end are connected by a gear (609); the gear (609) is rotatably connected to the side wall of the lower module (4).

5. The square tube punching device according to claim 4, characterized in that: Limiting rings (610) are fixedly connected to the outer walls of the threaded rods (603) on both sides of the connecting seat (605), and the limiting rings (610) are slidably connected to the side walls of the connecting seat (605).

6. The square tube punching device according to claim 4, characterized in that: A handwheel (615) is fixedly connected to the end of the threaded rod (603) away from the threaded hole (604).

7. The square tube punching device according to claim 1, characterized in that: The lower module (4) is fixedly connected to horizontally arranged guide rails (611) at both ends. The side walls of the first clamping plate (601) and the second clamping plate (602) are respectively provided with second sliding grooves (612) adapted to the guide rails (611). The first clamping plate (601) and the second clamping plate (602) are slidably connected to the guide rails (611) through the second sliding grooves (612).

8. The square tube punching device according to claim 1, characterized in that: Rollers (613) are rotatably connected to the side walls of the first clamping plate (601) and the second clamping plate (602) that are close to each other, and rubber pads (614) are wrapped on the outer walls of the rollers (613).

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