Metal pipe punching equipment

Abstract

The utility model discloses a metal tube punching device, which relates to the technical field of castings and comprises a frame provided with a bottom plate. The positioning jig is used for positioning the metal pipe; the two sliding blocks are arranged on the left side and the right side of the positioning jig respectively, guide slopes are arranged on the sides, away from each other, of the two sliding blocks, the included angle formed by the two guide slopes faces downwards, and the two punches are arranged on the two opposite side faces of the two sliding blocks respectively; the punching device comprises a positioning jig, a pressing plate, a lifting air cylinder and two transmission blocks, and the two transmission blocks can downwards extrude the two guide slopes correspondingly, so that the two punches can punch holes in the pipe wall of the metal pipe on the positioning jig. And the two sliding blocks are connected with the positioning jig through the two springs correspondingly, and the springs are used for enabling the two springs to drive the two sliding blocks to be away from each other correspondingly. According to the metal tube punching equipment, the through hole can be punched in the metal tube only by using one lifting air cylinder, so that the manufacturing cost of the metal tube punching equipment can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metal pipe processing, and particularly relates to a metal pipe punching device. Background Art

[0002] A metal pipe punching device is a mechanical device specifically used for punching holes in metal pipes. A metal pipe punching device for processing through holes usually includes a positioning fixture, two cylinders, and two punches. The positioning fixture is arranged between the two cylinders. When a through hole needs to be processed on a metal pipe, an operator places the metal pipe on the positioning fixture, and then starts the two cylinders. The two cylinders will respectively drive the two punches to approach each other, so that the two punches can respectively punch two holes on the pipe wall of the metal pipe on the positioning fixture, that is, form a through hole, and thus complete the punching hole processing of the metal pipe. The method of processing through holes by driving the two punches respectively by the two cylinders is not conducive to reducing the manufacturing cost of the metal pipe punching device. Content of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a metal pipe punching device, which can not only process through holes, but also is beneficial to reducing the manufacturing cost of the metal pipe punching device.

[0004] The metal pipe punching device according to an embodiment of the utility model includes:

[0005] A frame, on which a bottom plate is provided;

[0006] A positioning fixture, which is arranged on the bottom plate and is used for positioning the metal pipe;

[0007] Two sliders and two columnar punches. The two sliders are respectively arranged on the left and right sides of the positioning fixture. The two sliders are both slidably connected to the bottom plate in the left-right direction. Guide slopes are provided on the sides of the two sliders away from each other, and the included angle formed by the two guide slopes faces downward. The two punches are coaxially arranged, both parallel to the left-right direction, and the two punches are respectively arranged on the opposite side surfaces of the two sliders;

[0008] A pressing plate, a lifting cylinder, and two transmission blocks. The pressing plate is slidably connected to the bottom plate in the vertical direction. The pressing plate is disposed above the positioning fixture. Both of the two transmission blocks are disposed on the lower surface of the pressing plate. The two transmission blocks are respectively disposed above the two guiding inclined surfaces. The cylinder body of the lifting cylinder is disposed on the frame, and the piston rod of the lifting cylinder is connected to the pressing plate. The lifting cylinder is used to drive the pressing plate to rise or fall. The two transmission blocks can respectively press downward on the two guiding inclined surfaces, so that the two sliders approach each other, and the two punches can punch holes in the pipe wall of the metal pipe on the positioning fixture.

[0009] Two springs. The two sliders are respectively connected to the positioning fixture through the two springs. The springs are used to stretch or compress when the pressing plate rises or falls, so that the two springs can respectively drive the two sliders to move away from each other.

[0010] It has at least the following beneficial effects:

[0011] When an operator needs to process a through hole on a metal pipe, the metal pipe to be punched can be placed on the positioning fixture, and the positioning fixture can position the metal pipe. Then the operator starts the lifting cylinder, and the lifting cylinder starts to drive the pressing plate and the two transmission blocks on the pressing plate to descend. The two transmission blocks can respectively press on the two guiding inclined surfaces on the two sliders. Due to the orientation of the included angle formed by the two guiding inclined surfaces, as the two transmission blocks continue to descend, the two sliders start to approach each other, so that the two sliders respectively drive the two punches to approach each other. At this time, the two springs are compressed, so that the two punches can punch holes in the pipe wall of the metal pipe on the positioning fixture. Since the two punches are coaxially arranged, after the two punches punch holes in the pipe wall of the metal pipe, a through hole can be processed on the metal pipe. After the through hole is processed, the lifting cylinder drives the pressing plate and the two transmission blocks on the pressing plate to rise. As the two transmission blocks gradually rise, the two springs start to stretch and recover. Under the elastic force of the two springs, the two sliders move away from each other, so that the two sliders respectively drive the two punches to move away from each other, and the two punches are reset to facilitate the processing of the through hole on the next metal pipe. This metal pipe punching device only needs to use one lifting cylinder to drive the two punches to approach each other or move away from each other, and then a through hole can be punched on the metal pipe, which is beneficial to reducing the manufacturing cost of the metal pipe punching device.

[0012] According to the metal pipe punching device of the embodiment of the present utility model, the positioning fixture includes a positioning block and a positioning post. The positioning block and the positioning post are both arranged on the bottom plate. A positioning groove is formed in the positioning block. First avoidance holes are formed in the left and right side walls of the positioning block. The two first avoidance holes are coaxially arranged and are both communicated with the positioning groove. The two first avoidance holes are respectively used for the two punching heads to pass through. The left and right side walls of the positioning block are respectively connected to one ends of the two springs. The positioning post is arranged in the positioning groove. A punching hole is formed in the positioning post. The punching hole is coaxially arranged with the two first avoidance holes. The positioning post is used for the metal pipe to be sleeved thereon. The gap between the inner wall of the positioning groove and the positioning post is used to accommodate the pipe wall of the metal pipe. The left and right ends of the punching hole are respectively used for the two punching heads to extend into, so that the two punching heads can punch the pipe wall of the metal pipe sleeved on the positioning post.

[0013] According to the metal pipe punching device of the embodiment of the present utility model, it further includes a limiting block. The limiting block is arranged on the bottom plate. The positioning post is connected to the limiting block. The limiting block is used to abut against the metal pipe sleeved on the positioning post.

[0014] According to the metal pipe punching device of the embodiment of the present utility model, a first guiding chamfer is arranged on one side of the inner wall of the positioning groove away from the limiting block.

[0015] According to the metal pipe punching device of the embodiment of the present utility model, a second guiding chamfer is arranged at one end of the positioning post away from the limiting block.

[0016] According to the metal pipe punching device of the embodiment of the present utility model, mounting grooves are formed in both of the two sliders. The two springs are respectively arranged in the two mounting grooves. The other ends of the two springs are respectively connected to the bottom walls of the two mounting grooves.

[0017] According to the metal pipe punching device of the embodiment of the present utility model, a second blanking hole is formed in the positioning post. The second blanking hole is communicated with the punching hole, so that the waste in the punching hole can fall into the second blanking hole. A first blanking hole is formed in the inner wall of the positioning groove. A third blanking hole is formed in the bottom plate. The second blanking hole, the first blanking hole and the third blanking hole are communicated with each other. The second blanking hole, the first blanking hole and the third blanking hole are all used for the waste to pass through.

[0018] According to the metal pipe punching device of the embodiment of the present utility model, it further includes a waste box. The waste box is arranged below the third blanking hole. The waste box is used to collect the waste falling from the third blanking hole.

[0019] The metal pipe punching device according to an embodiment of the present invention further includes two mounting seats, the two mounting seats are respectively arranged on the left and right sides of the positioning fixture, chutes parallel to the left-right direction are formed on both of the two mounting seats, second avoidance holes are formed on the bottom walls of the two chutes, the two sliders are respectively arranged in the two chutes in a slidable manner along the left and right directions, the two punching heads respectively penetrate through the two second avoidance holes, and the two chutes respectively allow the lower ends of the two transmission blocks to extend in.

[0020] The metal pipe punching device according to an embodiment of the present invention further includes a plurality of guide sleeves and a plurality of guide posts, the plurality of guide posts are all parallel to the up-down direction, the lower ends of the plurality of guide posts are all connected to the bottom plate, the plurality of guide sleeves are all arranged on the pressing plate, and the plurality of guide sleeves are respectively sleeved on the plurality of guide posts in a slidable manner up and down.

[0021] For the metal pipe punching device according to an embodiment of the present invention, a guiding chamfer is formed at one end of the second connecting air pipe.

[0022] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0023] The following further describes the present invention in conjunction with the drawings and embodiments, where:

[0024] Figure 1 is a schematic structural diagram of the metal pipe punching device and the metal pipe in the present application;

[0025] Figure 2 is Figure 1 a schematic structural diagram of the pressing plate and the transmission block of the metal pipe punching device in;

[0026] Figure 3 is Figure 1 a schematic structural diagram of the positioning fixture, the slider and the mounting seat of the metal pipe punching device in;

[0027] Figure 4 is Figure 1 a schematic cross-sectional view of the positioning fixture, the slider and the mounting seat of the metal pipe punching device in;

[0028] Figure 5 is Figure 1 a schematic cross-sectional view of the positioning block, the positioning post and the punching head of the metal pipe punching device in;

[0029] Reference Signs:

[0030] Bottom plate 100; guide post 110; mounting seat 120; chute 121; second relief hole 122; slider 130; guiding inclined surface 131; mounting groove 132; punch 140; spring 150;

[0031] Press plate 200; guide bushing 210; transmission block 220;

[0032] Positioning fixture 300; positioning block 310; positioning groove 311; first relief hole 312; first blanking hole 313; first guiding chamfer 314; positioning post 320; punching hole 321; second blanking hole 322; second guiding chamfer 323; limiting block 330. Specific embodiments

[0033] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0035] In the description of the present invention, "a plurality of" means more than two. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0037] Refer to Figures 1 to 5 , the metal pipe punching device of the embodiment of the present invention includes:

[0038] A frame (not shown in the figure), on which a bottom plate 100 is provided;

[0039] A positioning fixture 300, which is arranged on the bottom plate 100 and is used for positioning the metal pipe;

[0040] Two sliders 130 and two columnar punches 140. The two sliders 130 are respectively arranged on the left and right sides of the positioning fixture 300. The two sliders 130 are both slidably connected to the bottom plate 100 in the left-right direction. On the side of each of the two sliders 130 away from the other, a guiding inclined surface 131 is provided. The included angle formed by the two guiding inclined surfaces 131 faces downward. The two punches 140 are coaxially arranged, both parallel to the left-right direction, and the two punches 140 are respectively arranged on the opposite side surfaces of the two sliders 130;

[0041] A pressing plate 200, a lifting air cylinder (not shown in the figure), and two transmission blocks 220. The pressing plate 200 is slidably connected to the bottom plate 100 in the up-down direction. The pressing plate 200 is arranged above the positioning fixture 300. The two transmission blocks 220 are both arranged on the lower surface of the pressing plate 200, and the two transmission blocks 220 are respectively arranged above the two guiding inclined surfaces 131. The cylinder body of the lifting air cylinder is arranged on the frame, and the piston rod of the lifting air cylinder is connected to the pressing plate 200. The lifting air cylinder is used to drive the pressing plate 200 to rise or fall. The two transmission blocks 220 can respectively press down on the two guiding inclined surfaces 131, so that the two sliders 130 approach each other, and the two punches 140 can punch holes 321 in the pipe wall of the metal pipe on the positioning fixture 300;

[0042] Two springs 150. The two sliders 130 are respectively connected to the positioning fixture 300 through the two springs 150. The springs 150 are used to stretch or compress when the pressing plate 200 rises or falls, so that the two springs 150 can respectively drive the two sliders 130 to move away from each other.

[0043] It can be understood that when an operator needs to process a through hole on a metal tube, the metal tube with the punching hole 321 to be cut can be placed on the positioning fixture 300, and the positioning fixture 300 can play a positioning role for the metal tube. Then the operator starts the lifting cylinder, and the lifting cylinder starts to drive the pressing plate 200 and the two transmission blocks 220 on the pressing plate 200 to descend. The two transmission blocks 220 can respectively press against the two guiding inclined surfaces 131 on the two sliders 130. Due to the orientation of the included angle formed by the two guiding inclined surfaces 131, as the two transmission blocks 220 continue to descend, the two sliders 130 start to approach each other, causing the two sliders 130 to drive the two punches 140 to approach each other respectively. At this time, the two springs 150 are compressed, enabling the two punches 140 to punch the hole 321 in the tube wall of the metal tube on the positioning fixture 300. Since the two punches 140 are coaxially arranged, after the two punches 140 punch the hole 321 in the tube wall of the metal tube, a through hole can be processed on the metal tube. After the through hole is processed, the lifting cylinder drives the pressing plate 200 and the two transmission blocks 220 on the pressing plate 200 to rise. As the two transmission blocks 220 gradually rise, the two springs 150 start to stretch and recover. Under the elastic force of the two springs 150, the two sliders 130 move away from each other, causing the two sliders 130 to drive the two punches 140 to move away from each other respectively, resetting the two punches 140 for processing the through hole of the next metal tube. This metal tube punching device only needs to use one lifting cylinder to drive the two punches 140 to approach or move away from each other, and then a through hole can be punched on the metal tube, which is conducive to reducing the manufacturing cost of the metal tube punching device.

[0044] Reference Figures 3 to 5 , the positioning fixture 300 includes a positioning block 310 and a positioning column 320. The positioning block 310 and the positioning column 320 are both arranged on the bottom plate 100. A positioning groove 311 is formed in the positioning block 310. First avoidance holes 312 are formed on the left and right side walls of the positioning block 310. The two first avoidance holes 312 are coaxially arranged and both communicate with the positioning groove 311. The two first avoidance holes 312 are respectively used for the two punches 140 to pass through. The left and right side walls of the positioning block 310 are respectively connected to one end of the two springs 150. The positioning column 320 is inserted into the positioning groove 311. A punching hole 321 is formed in the positioning column 320. The punching hole 321 is coaxially arranged with the two first avoidance holes 312. The positioning column 320 is used for the metal tube to be sleeved. The gap between the inner wall of the positioning groove 311 and the positioning column 320 is used to accommodate the tube wall of the metal tube. The left and right ends of the punching hole 321 are respectively used for the two punches 140 to extend into, so that the two punches 140 can punch the hole 321 in the tube wall of the metal tube sleeved on the positioning column 320.

[0045] It can be understood that when punching holes 321 in the metal tube, the operator can insert the tube wall of the metal tube into the gap between the positioning post 320 and the inner wall of the positioning groove 311. At this time, the positioning post 320 is inserted into the metal tube. The inner walls of the positioning post 320 and the positioning groove 311 play a positioning role for the metal tube, preventing the metal tube from shaking during the process of punching holes 321. The two punch heads 140 are respectively inserted into the two first avoidance holes 312. After the metal tube is positioned, the lifting cylinder drives the pressing plate 200 to descend, and the two punch heads 140 approach each other and the metal tube. As the two punch heads 140 continue to approach, the two punch heads 140 will punch two holes respectively in the areas at the left and right ends of the metal tube corresponding to the punching holes 321, and the two punch heads 140 will respectively extend into the left and right ends of the avoidance holes, so that the waste generated by the punching holes 321 enters the punching holes 321, thus completing the processing of the through holes. It should be explained that after the two punch heads 140 approach each other, the two punch heads 140 will punch two holes in the tube wall of the metal tube. Since the punch heads 140 are coaxially arranged, the two punched holes are also coaxial, and these two holes form the through hole. On the other hand, the hole walls of the two first avoidance holes 312 can respectively support the two punch heads 140, enabling the two punch heads 140 to move smoothly left and right.

[0046] Reference Figure 3 and Figure 4 The metal tube punching device further includes a limit block 330. The limit block 330 is arranged on the bottom plate 100, and the positioning post 320 is connected to the limit block 330. The limit block 330 is used to abut against the metal tube sleeved on the positioning post 320. It can be understood that when the metal tube is sleeved on the positioning post 320, one end of the metal tube can abut against the limit block 330. The limit block 330 positions the metal tube in the front-back direction, ensuring that the punched through hole can be in the correct position on the metal tube. On the other hand, during the punching process of the metal tube, the operator can hold the metal tube and continuously push the metal tube in the direction close to the limit block 330, so that one end of the metal tube is fixed on the limit block 330, effectively preventing the metal tube from shaking during the process of punching holes 321.

[0047] Reference Figure 4 and Figure 5, a second blanking hole 322 is formed in the positioning post 320. The second blanking hole 322 communicates with the punching hole 321 so that the waste material in the punching hole 321 can fall into the second blanking hole 322. A first blanking hole 313 is formed in the inner wall of the positioning groove 311, and a third blanking hole (not shown in the figure) is formed in the bottom plate 100. The second blanking hole 322, the first blanking hole 313, and the third blanking hole communicate with each other, and the second blanking hole 322, the first blanking hole 313, and the third blanking hole are all used for the waste material to pass through. The metal pipe punching device further includes a waste box (not shown in the figure). The waste box is arranged below the third blanking hole and is used for collecting the waste material falling from the third blanking hole.

[0048] It can be understood that during the process of punching the punching hole 321 by the two punches 140, part of the material on the wall of the metal pipe will be removed to form a through hole, and the removed material is the waste material. Under the action of the two punches 140, the waste material will be pushed into the punching hole 321. A second blanking hole 322 is formed in the positioning post 320, a first blanking hole 313 is formed in the inner wall of the positioning groove 311, and a third blanking hole is formed in the bottom plate 100. Since the second blanking hole 322, the first blanking hole 313, and the third blanking hole communicate with each other, the waste material in the punching hole 321 can be pushed by the two punches 140 into the second blanking hole 322. The waste material in the second blanking hole 322 will pass through the second blanking hole 322, the first blanking hole 313, and the third blanking hole and fall into the waste box. Under the action of the second blanking hole 322, the first blanking hole 313, and the third blanking hole, the punching hole 321 is effectively prevented from being blocked by waste material, so that the processing of the punching hole 321 of the metal pipe can be carried out smoothly. On the other hand, the waste box can collect the fallen waste material, preventing the waste material from being scattered in the processing environment and facilitating the operator to centrally process the collected waste material.

[0049] Reference Figure 3 , a first guiding chamfer 314 is provided on the side of the inner wall of the positioning groove 311 away from the limiting block 330, and a second guiding chamfer 323 is provided at one end of the positioning post 320 away from the limiting block 330. It can be understood that under the action of the first guiding chamfer 314 and the second guiding chamfer 323, it enables the operator to more easily insert the wall of the metal pipe into the gap between the positioning post 320 and the inner wall of the positioning groove 311, and also enables the operator to more easily sleeved the metal pipe on the positioning post 320, improving the convenience of the operator in positioning the metal pipe.

[0050] Reference Figure 3, mounting grooves 132 are formed in both of the two sliding blocks 130, and two springs 150 are respectively disposed in the two mounting grooves 132. The other ends of the two springs 150 are respectively connected to the bottom walls of the two mounting grooves 132. It can be understood that the two springs 150 are respectively disposed in the mounting grooves 132 on the two sliding blocks 130, preventing the springs 150 from being fully exposed to the outside, which is beneficial to extending the service life of the springs 150.

[0051] Reference Figure 3 And Figure 4 , the metal tube punching device further includes two mounting seats 120 which are respectively disposed on the left and right sides of the positioning fixture 300. Parallel to the left-right direction, sliding grooves 121 are formed in both of the two mounting seats 120, and second avoidance holes 122 are formed in the bottom walls of the two sliding grooves 121. The two sliding blocks 130 are respectively slidably disposed in the two sliding grooves 121 along the left and right directions, and two punching heads 140 respectively pass through the two second avoidance holes 122. The lower ends of the two driving blocks 220 can respectively extend into the two sliding grooves 121. It can be understood that the inner walls of the sliding grooves 121 on the mounting seats 120 can guide the movement of the sliding blocks 130, enabling the sliding blocks 130 to move smoothly left and right. On the other hand, the hole walls of the two second avoidance holes 122 can respectively support the two punching heads 140, enabling the two punching heads 140 to move smoothly left and right.

[0052] Reference Figure 1 And Figure 2 , the metal tube punching device further includes a plurality of guide sleeves 210 and a plurality of guide posts 110. The plurality of guide posts 110 are all parallel to the up-down direction, the lower ends of the plurality of guide posts 110 are all connected to the bottom plate 100, and the plurality of guide sleeves 210 are all disposed on the pressing plate 200. The plurality of guide sleeves 210 are respectively slidably sleeved on the plurality of guide posts 110 in the up-down direction. It can be understood that a plurality of guide sleeves 210 are connected to the pressing plate 200, and the plurality of guide sleeves 210 are respectively slidably sleeved on the plurality of guide posts 110, thereby enabling the pressing plate 200 to slide up and down.

[0053] Reference Figure 2 , as an embodiment of the present invention, the lower ends of the two driving blocks 220 are respectively provided with driving inclined surfaces, and the included angle formed by the two driving inclined surfaces faces downward. The two driving blocks 220 can respectively abut against the two guiding inclined surfaces 131 through the two driving inclined surfaces, increasing the contact area between the driving blocks 220 and the sliding blocks 130, enabling the force transmitted by the driving blocks 220 to be more uniform, and further enabling the movement of the sliding blocks 130 and the punching heads 140 to be more stable.

[0054] In the present utility model, a positioning fixture 300, two transmission blocks 220, two sliders 130, two punches 140 and two sliding seats form a set of punching hole 321 modules. There are two sets of punching hole 321 modules in the metal pipe punching device according to the embodiment of the present utility model. The four transmission blocks 220 are all arranged on the lower surface of the pressing plate 200. That is, the metal pipe punching device can punch holes 321 in two metal pipes at a time, that is, only one lifting cylinder can be used to process through holes in two metal pipes, which is conducive to reducing the manufacturing cost of the metal pipe punching device.

[0055] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0056] Certainly, the present utility model is not limited to the above embodiments. Those skilled in the art can also make equivalent deformations or substitutions without departing from the spirit of the present utility model. These equivalent deformations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A metal tube punching device, characterized in that: include: A frame, wherein a bottom plate is provided on the frame; A positioning jig, the positioning jig is arranged on the bottom plate, and the positioning jig is used to position the metal pipe; Two sliders and two columnar punches, the two sliders are respectively arranged on the left and right sides of the positioning fixture, the two sliders can be connected to the bottom plate in a sliding manner along the left and right directions, the two sliders are provided with guide slopes on the sides away from each other, the angle formed by the two guide slopes is downward, the two punches are coaxially arranged, the two punches are parallel to the left and right directions, and the two punches are respectively arranged on two opposite side surfaces of the two sliders; A pressing plate, a lifting cylinder and two transmission blocks, the pressing plate can be connected to the bottom plate by sliding up and down, the pressing plate is arranged above the positioning fixture, the two transmission blocks are arranged on the lower surface of the pressing plate, the two transmission blocks are respectively arranged above the two guide inclined surfaces, the cylinder body of the lifting cylinder is arranged on the frame, the piston rod of the lifting cylinder is connected to the pressing plate, the lifting cylinder is used to drive the pressing plate to rise or fall, the two transmission blocks can respectively press the two guide inclined surfaces downward to make the two sliders close to each other, and enable the two punches to punch holes in the tube wall of the metal tube on the positioning fixture; Two springs, the two sliders are connected to the positioning fixture through the two springs respectively, and the springs are used to stretch or compress when the pressure plate rises or falls, so that the two springs can respectively drive the two sliders to move away from each other.

2. The metal tube punching device according to claim 1, characterized in that: The positioning fixture includes a positioning block and a positioning column, the positioning block and the positioning column are both arranged on the bottom plate, the positioning block is provided with a positioning groove, the left and right side walls of the positioning block are provided with first avoidance holes, the two first avoidance holes are coaxially arranged and are connected to the positioning groove, the two first avoidance holes are respectively used for the two punches to pass through, the left and right side walls of the positioning block are respectively connected to one end of the two springs, the positioning column is passed through the positioning groove, the positioning column is provided with a punching hole, the punching hole is coaxially arranged with the two first avoidance holes, the positioning column is used for the metal tube to be sleeved, the gap between the inner wall of the positioning groove and the positioning column is used to accommodate the tube wall of the metal tube, the left and right ends of the punching hole are respectively used for the two punches to extend into, so that the two punches can punch holes in the tube wall of the metal tube sleeved on the positioning column.

3. The metal tube punching device according to claim 2, characterized in that: It also includes a limit block, which is arranged on the bottom plate, the positioning column is connected to the limit block, and the limit block is used to abut against the metal tube sleeved on the positioning column.

4. The metal tube punching device according to claim 3, characterized in that: A first guide chamfer is provided on a side of the inner wall of the positioning groove away from the limiting block.

5. The metal tube punching device according to claim 3, characterized in that: A second guide chamfer is provided at one end of the positioning column away from the limiting block.

6. The metal tube punching device according to claim 2, characterized in that: The two sliding blocks are both provided with mounting grooves, the two springs are respectively arranged in the two mounting grooves, and the other ends of the two springs are respectively connected to the bottom walls of the two mounting grooves.

7. The metal tube punching device according to claim 2, characterized in that: A second blanking hole is provided on the positioning column, and the second blanking hole is connected with the punching hole so that the waste in the punching hole can fall into the second blanking hole. A first blanking hole is provided on the inner wall of the positioning groove, and a third blanking hole is provided on the bottom plate. The second blanking hole, the first blanking hole and the third blanking hole are connected with each other, and the second blanking hole, the first blanking hole and the third blanking hole are all used for allowing the waste to pass through.

8. The metal tube punching device according to claim 7, characterized in that: It also includes a waste box, which is arranged below the third material drop hole and is used to collect the waste dropped from the third material drop hole.

9. The metal tube punching device according to claim 1, characterized in that: It also includes two mounting seats, which are respectively arranged on the left and right sides of the positioning fixture, and the two mounting seats are each provided with a slide groove parallel to the left and right directions, and the bottom walls of the two slide grooves are each provided with a second avoidance hole, and the two sliding blocks can be slidably arranged in the two slide grooves along the left and right directions, and the two punches are respectively inserted into the two second avoidance holes, and the two slide grooves can respectively allow the lower ends of the two transmission blocks to extend therein.

10. The metal tube punching device according to claim 1, characterized in that: It also includes multiple guide sleeves and multiple guide columns, the multiple guide columns are parallel to the up and down directions, the lower ends of the multiple guide columns are connected to the bottom plate, the multiple guide sleeves are arranged on the pressure plate, and the multiple guide sleeves can be slidably mounted on the multiple guide columns up and down.

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