An automatic punching device for galvanized highway guardrail

Abstract

The present invention relates to the field of automatic punching technology, and specifically to an automatic punching device for galvanized highway guardrails, comprising a base, a rotating device, a punching device, and a distance-adjusting device. The present invention adopts a distance-adjusting device to control the position of the punching device, a directional slider to control the position of the support block, and a replaceable punch and support block, thereby being able to punch holes in different types of galvanized highway guardrails; after the first round of punching is completed, the motor drives the base to rotate 180° and then performs a second round of processing to achieve processing at both ends of the galvanized highway guardrail; when the punching device reaches the working position, the clamping block clamps the galvanized highway guardrail under the action of pushing the slider, making the punching more accurate; the fitting protrusion above the support block adopts a hollow structure, and is provided with a punching hole corresponding to the punch position, and the support plate in the middle of the rotating base can support the middle of the guardrail, making the guardrail more accurate during punching without deformation.

Description

Technical Field

[0001] The invention relates to the technical field of automatic punching, in particular to an automatic punching device for a galvanized highway guardrail. Background Art

[0002] Galvanized highway guardrails are often constructed from ordinary carbon structural steel, referred to as guardrails. These guardrails consist of two corrugated steel panels, with two posts clamped between them. The two posts are clamped between the panels, requiring perforations. Due to the large size and structural carbon steel construction of the guardrails, perforations can be difficult to accurately position, deform, and require repeated drilling at both ends.

[0003] In response to the above-mentioned problem, the utility model patent with publication number CN217749421U discloses a punching device for the production and processing of road guardrails. This technology sets two positioning devices and baffles, rotates two cranks and adjusting screws, and the two cranks rotate simultaneously to drive the two limit plates to move toward the middle, thereby limiting the two sides of the guardrail board. The adjusting screw rotates to drive the baffle to move to limit the end of the guardrail board, so that the punching position of the end of the guardrail board is located directly below the three drill bits, thereby achieving precise fixation of the punching position of the guardrail board, thereby solving the problem of deviation in the punching position; however, it does not address the problems of deformation of the guardrail and punching at both ends of the guardrail.

[0004] In addition, the following problems exist when punching holes in the guardrail: 1. Since the guardrail material is structural carbon steel and is large in size, when punching holes at both ends of the guardrail, the punching force of the processing punch is very large, causing the guardrail to deform, affecting production efficiency; 2. Since the guardrails have different sizes, the punching positions of the guardrails will be different, and the existing punching processing of guardrails of different models will result in inaccurate punching positions; 3. When punching holes in the guardrail, since there are no infinite positions at both ends, there will be displacement when punching holes in the guardrail. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: an automatic punching device for a galvanized highway guardrail, comprising a base, a rotating device, and a punching device. The base is connected to a rotating device above the base, and two punching devices are located at the left and right ends above the rotating device, and the positions of the two punching devices are arranged symmetrically with respect to the base. The tops of the two punching devices are both connected to the lower end of the distance adjusting device, and the upper mounting end of the distance adjusting device is connected to the free end.

[0006] The rotating device includes a rotating base arranged on the base, the lower end of the rotating base is connected to a motor, the motor is arranged inside the base, a support plate is provided on the upper side of the middle part of the rotating base, and directional slide grooves are respectively provided at the front and rear ends of the rotating base, and two directional sliders are respectively arranged at the left and right ends of the rotating base, and the front and rear ends of the directional sliders are respectively slidably installed with the directional slide grooves, a support block is connected above the directional slider, and a support position adjustment screw is connected to the middle of the two directional sliders by threaded cooperation, and one end of the support position adjustment screw passes through the rotating base and is connected to the operating handle.

[0007] The punching device includes a T-shaped plate located above the rotating device, and an adjustment slot is provided in the vertical section of the T-shaped plate. A punch push rod is fixedly installed at the bottom of the end of the T-shaped plates on the two punching devices that are away from each other, and a number of punches are provided at the bottom of the end of the T-shaped plates on the two punching devices that are close to each other. Two punch slides are provided on the side of the vertical section of the T-shaped plate close to the punch, and a punch slider is slidably installed inside each punch slide. Two punches are fixedly connected to the inner side of each punch slider, and a square telescopic rod is connected between the corresponding two punch sliders on each T-shaped plate, the middle part of the square telescopic rod is a fixed end, and its two ends are telescopic ends. The telescopic ends of the square telescopic rod are respectively connected to the punch sliders, and the fixed end of the square telescopic rod is connected to the punch push rod through a connecting rod.

[0008] The lower end of the punch corresponding to the punch slider on the left end is tilted inward, and the lower end of the punch corresponding to the punch slider on the right end is tilted outward. Two punches are also installed at the bottom of the T-shaped plate at the left end, and the punch on the T-shaped plate is located between the punches corresponding to the two punch sliders.

[0009] Preferably, two positioning grooves are provided on the lower side of the rotating base, and convex plates are fixedly installed on the left and right ends of the base respectively. Two positioning triangular blocks are installed inside the convex plates. The upper ends of the positioning triangular blocks are positioned and inserted in the positioning grooves, and the lower ends of the positioning triangular blocks are provided with insertion rods, which pass through the convex plates, and the middle part of the positioning triangular blocks is an elastic telescopic structure.

[0010] Preferably, pushing sliders are fixedly installed at both ends of the rotating base, and a clamping block corresponding to the position of the pushing slider is installed at the lower end of the outer side of the T-shaped plate, and the end where the clamping block and the pushing slider are close to each other is set as an inclined surface. The clamping block and the T-shaped plate are slidingly connected. When the punching device moves downward, the clamping block and the pushing slider drive the clamping block to move inward and clamp the guardrail under the cooperation of the inclined surface.

[0011] Preferably, the middle portion of the clamping block is an elastic telescopic structure, and a pushing plate is installed at one end of the clamping block away from its inclined structure.

[0012] Preferably, the distance adjusting device includes a distance adjusting support connected to the upper free end, and distance adjusting sliders are slidably provided at the left and right ends inside the distance adjusting support, and a stamping position adjusting screw is provided between the two distance adjusting sliders. One end of the stamping position adjusting screw passes through the distance adjusting support and is connected to a manipulation handle, and the lower ends of the distance adjusting sliders at both ends are connected to distance adjusting push rods, and the lower ends of the distance adjusting push rods are respectively connected to the punching devices.

[0013] Preferably, the distance-adjusting support and the rotating base are respectively provided with scale marks, and the distance-adjusting slider and the directional slider are respectively provided with scale pointers.

[0014] Preferably, the support block is mounted on the directional slider in a detachable connection manner, and the upper side of the support block, the upper side of the support plate and the upper side of the rotating base are all located in the same horizontal plane.

[0015] Preferably, the upper part of the support block is provided with a plurality of fitting protrusions corresponding to the guardrail structure, the interior of the fitting protrusion is set to be hollow, and punching holes are opened at positions corresponding to the punch heads. The support blocks are provided with a variety of models, and the fitting protrusions on each model of support block can be punched for different models of guardrails.

[0016] Preferably, the punching head of the punch is configured as a threaded detachable structure, thereby facilitating replacement of punching heads of different models.

[0017] The beneficial effects of the present invention are:

[0018] 1. The present invention adopts a method of setting a support plate on the upper side of the middle part of the base, and setting fitting protrusions that fit the shape of the guardrail at both ends of the guardrail that needs to be punched, and the interior of the fitting protrusion is set to be hollow, and a punching hole is opened at the position corresponding to the punch head, so that punching deformation will not occur during punching, thereby increasing the accuracy of the guardrail punching and preventing the problem of installation deviation caused by poor punching accuracy during the later installation of the guardrail.

[0019] 2. The present invention adopts a replaceable support block, so that the fitting protrusions on the support block can support guardrails of different models, thereby increasing the applicability of the present invention. The present invention also adjusts the position of the support block synchronously, so that the present invention can process guardrails with different punching positions. The rotating base and the distance-adjusting support are both provided with scale marks, which can accurately control the punching positions of guardrails of different models.

[0020] 3. The present invention adopts a clamping block provided at both ends to clamp the guardrail when punching the guardrail, thereby preventing the guardrail from shifting during the punching and making the punching position more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and examples.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the rotating device of the present invention.

[0024] Figure 3 It is a top view of the rotating device of the present invention.

[0025] Figure 4 This invention Figure 3 AA cross-sectional view.

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the punching device of the present invention.

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the left punching device of the present invention.

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the punching device on the right side of the present invention.

[0029] Figure 8 This invention Figure 1 Enlarged view of point B.

[0030] Figure 9 It is a right side plan view of the present invention.

[0031] Figure 10 This invention Figure 9 Enlarged view of point C.

[0032] Figure 11 It is a schematic diagram of the three-dimensional structure of the distance adjustment device of the present invention.

[0033] Figure 12 It is a cross-sectional view of the punch of the present invention.

[0034] Figure numerals: 1. base; 11. positioning triangle block; 12. convex plate; 13. interpenetrating rod; 2. rotating device; 21. rotating base; 22. positioning groove; 23. directional slider; 24. support block; 241. fitting convex block; 25. pushing slider; 26. support plate; 27. motor; 28. directional slide; 3. punching device; 31. T-plate; 32. adjusting groove; 33. punch; 34. punch slide; 35. punch slider; 36. square telescopic rod; 37. connecting rod; 38. clamping block; 381. pushing plate; 39. punch push rod; 4. distance adjusting device; 41. distance adjusting support; 42. distance adjusting push rod; 43. distance adjusting slider. DETAILED DESCRIPTION

[0035] The following embodiments of the present invention are described in detail. The embodiments described below are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product instructions shall be followed.

[0036] See Figure 1 , a galvanized highway guardrail automatic punching device, including a base 1, a rotating device 2, and a punching device 3. The rotating device 2 is connected to the top of the base 1, and the two punching devices 3 are located at the left and right ends above the rotating device 2, and the positions of the two punching devices 3 are symmetrically arranged with the base 1 as the reference. The tops of the two punching devices 3 are both connected to the lower end of the distance adjusting device 4, and the upper mounting end of the distance adjusting device 4 is connected to the free end; by clamping guardrails of different models on the rotating device 2, and adjusting the positions of the two punching devices 3 through the distance adjusting device 4 according to the model of the guardrail, the guardrail is punched, and thus the present invention can punch guardrails of different models.

[0037] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The rotating device 2 includes a rotating base 21 arranged on the base 1, and the lower end of the rotating base 21 is connected to a motor 27, and the motor 27 is arranged inside the base 1. A support plate 26 is provided on the upper side of the middle part of the rotating base 21, and a directional slide 28 is provided at the front and rear ends of the rotating base 21 respectively. Two directional sliders 23 are respectively provided at the left and right ends of the rotating base 21, and the front and rear ends of the directional slider 23 are respectively slidably installed with the directional slide 28. A support block 24 is connected to the top of the directional slider 23, and the middle part of the two directional sliders 23 is connected to a support position adjustment screw by threaded fitting. One end of the support position adjustment screw passes through the rotating base 21 and is connected to the operating handle; rotating Device 2 can support and position guardrails of different types, increasing the scope of application of the present invention. Specifically, by rotating the operating handle of the support position adjustment screw, the directional slider 23 is driven to adjust the internal and external positions synchronously. The directional slider 23 is adjusted to the left and right positions under the action of the directional slide groove 28, thereby adjusting the position of the support block 24 connected above the directional slider 23. By adjusting the position of the support block 24, different types of guardrails are supported, which prevents deviations in the punching position when punching different types of guardrails and increases the accuracy of punching. After the first round of punching is completed, the motor 27 can drive the rotating base 21 to rotate 180°, and then perform a second round of punching on the guardrail to achieve punching at both ends of the guardrail.

[0038] See Figure 2The support block 24 is installed on the directional slider 23 in a detachable connection manner, and the upper side of the support block 24, the upper side of the support plate 26 and the upper side of the rotating base 21 are all located in the same horizontal plane; the detachable support block 24 is used to support and punch guardrails of different types, and the upper side of the support block 24, the upper side of the support plate 26 and the upper side of the rotating base 21 are all located in the same horizontal plane, which makes the guardrail more stable during punching and increases the accuracy of punching.

[0039] See Figure 2 、 Figure 3 and Figure 4 The upper part of the support block 24 is provided with a plurality of fitting protrusions 241 corresponding to the guardrail structure. The interior of the fitting protrusion 241 is set to be hollow, and punching holes are opened at the position corresponding to the punch 33. The support block 24 is provided with a variety of models. The fitting protrusion 241 on each model of the support block 24 can be used for punching holes for guardrails of different models; specifically, when punching holes for guardrails of different models, it is only necessary to replace the support block 24 according to the model of the guardrail to be punched, so that the fitting protrusion 241 on the support block 24 is adapted to the guardrail to be punched, thereby solving the problem of deviation in the punching position of guardrails of different models. At the same time, the fitting protrusion 241 fits the guardrail, thereby preventing deformation of the guardrail during punching.

[0040] See Figure 1 、 Figure 8 、 Figure 9 and Figure 10 The lower side of the rotating base 21 is provided with two positioning grooves 22. A protruding plate 12 is fixedly mounted on each end of the base 1. Two positioning triangles 11 are mounted inside the protruding plates 12. The upper ends of the positioning triangles 11 are positioned and inserted into the positioning grooves 22. The lower ends of the positioning triangles 11 are provided with insertion rods 13. The insertion rods 13 pass through the protruding plates 12 and have an elastic and retractable structure at the center. The present invention ensures that the rotating device 2 is accurately positioned after rotating 180 degrees by positioning the positioning triangles 11 and inserting them into the positioning grooves 22, thereby increasing the accuracy of the punching.

[0041] See Figure 1 and Figure 11The distance adjustment device 4 includes a distance adjustment support 41 connected to the upper free end. Distance adjustment sliders 43 are slidably disposed at the front and rear ends of the distance adjustment support 41. A punching position adjustment screw is disposed between the two distance adjustment sliders 43. One end of the punching position adjustment screw passes through the distance adjustment support 41 and is connected to an operating handle. Distance adjustment push rods 42 are connected to the lower ends of the distance adjustment sliders 43 at both ends. The lower ends of the distance adjustment push rods 42 are respectively connected to the punching device 3. The distance adjustment device 4 can synchronize the position of the punching device 3 with the position adjustment of the support block 24, thereby increasing the accuracy of guardrail punching. When different types of guardrails need to be processed, the position of the distance adjustment sliders 43 can be adjusted by rotating the operating handle on the punching position adjustment screw to rotate the punching position adjustment screw. The distance adjustment slider 43 adjusts the position of the punching device 3 through the distance adjustment push rods 42.

[0042] See Figure 1 、 Figure 2 and Figure 5 Pushing sliders 25 are fixedly mounted on both ends of the rotating base 21. A clamping block 38 corresponding to the position of the pushing slider 25 is mounted on the outer lower end of the T-shaped plate 31. The end of the clamping block 38 that is closest to the pushing slider 25 is configured as an inclined surface. The clamping block 38 and the T-shaped plate 31 are slidably connected. When the punching device 3 moves downward, the clamping block 38 and the pushing slider 25 cooperate with each other to drive the clamping block 38 inward and clamp the guardrail. When the punching device 3 is pushed downward by the distance adjustment push rod 42 into the punching position, the clamping block 38 slidably connected to the T-shaped plate 31 clamps the guardrail inward under the action of the pushing slider 25 fixed to the rotating base 21, thereby increasing the stability of the guardrail during the punching operation and improving the punching accuracy of the guardrail.

[0043] See Figure 6 The middle part of the clamping block 38 is an elastic telescopic structure, and a pushing plate 381 is installed at the end of the clamping block 38 away from its inclined structure; the middle part of the clamping block 38 is an elastic telescopic structure, which adds a buffer when the pushing plate 381 clamps the guardrail, so that the guardrail will not be squeezed and deformed when clamped.

[0044] See Figure 2 and Figure 11 The distance adjustment support 41 and the rotating base 21 are respectively provided with scale marks, and the distance adjustment slider 43 and the directional slider 23 are respectively provided with scale pointers. The scale marks increase the accuracy of adjusting the distance adjustment slider 43 and the directional slider 23, making the guardrail punching more accurate.

[0045] See Figure 1 、 Figure 5 and Figure 6The punching device 3 includes a T-shaped plate 31 located above the rotating device 2, and an adjustment slot 32 is provided on the vertical section of the T-shaped plate 31. A punch push rod 39 is fixedly installed at the bottom of the end of the T-shaped plates 31 on the two punching devices 3 that are away from each other. A plurality of punches 33 are provided at the bottom of the end of the T-shaped plates 31 on the two punching devices 3 that are close to each other. Two punch slides 34 are provided on the side of the vertical section of the T-shaped plate 31 close to the punch 33. A punch slider 35 is slidably installed inside each punch slide 34. The inner side of each punch slider 35 is fixedly connected to two punches 33. The two punch sliders 35 corresponding to each T-shaped plate 31 are fixed to each other. A square telescopic rod 36 is connected in between, the middle part of the square telescopic rod 36 is a fixed end, and its two ends are telescopic ends. The telescopic ends of the square telescopic rod 36 are respectively connected to the punch slider 35, and the fixed end of the square telescopic rod 36 is connected to the punch push rod 39 through the connecting rod 37; when processing the guardrail, the position of the square telescopic rod 36 is adjusted by the punch push rod 39 and the connecting rod 37. Under the action of the punch slide 34, the punch sliders 35 connected to the two ends of the square telescopic rod 36 can be adjusted at the same height, and then the position of the punch 33 connected to the punch slider 35 can be adjusted, so that accurate punching operations can be performed on guardrails of different models.

[0046] See Figure 6 and Figure 7 The lower end of the punch 33 corresponding to the punch slider 35 on the left end is tilted inward, while the lower end of the punch 33 corresponding to the punch slider 35 on the right end is tilted outward. Two punches 33 are also installed at the bottom of the T-shaped plate 31 on the left end, and the punch 33 on the T-shaped plate 31 is located between the punches 33 corresponding to the two punch sliders 35. In the present invention, the punch 33 on the left end can punch a hole in the middle part of one end of the guardrail, and the punch 33 on the right end can punch holes on both sides of the other end of the guardrail. Punching is performed after the rotating device 2 rotates 180 degrees, thereby achieving punching of holes at both ends of the guardrail.

[0047] See Figure 12 The punching head of the punch 33 is set as a threaded detachable structure, which makes it easy to replace punching heads of different models; the punching head required for different types of guardrails is replaced to solve the problem of inaccurate punching positioning of different types of guardrails.

[0048] When the present invention performs punching processing on the guardrail, the corresponding model of the punch 33 and the support block 24 are selected according to the model of the guardrail to be processed, the distance between the directional sliders 23 is adjusted, and the distance between the distance-adjusting sliders 43 is adjusted at the same time. The distance-adjusting slider 43 drives the punching device 3 to the corresponding position through the distance-adjusting push rod 42, and the processed guardrail is placed on the rotating device 2. The punching device 3 moves downward to the punching position under the action of the distance-adjusting push rod 42, and at the same time, the clamping block 38 pushes the pushing plate 381 inward under the action of the pushing slider 25 to clamp the guardrail, and the punch 33 punches holes in the guardrail. After the first round of punching is completed, the motor 27 drives the rotating base 21 to rotate 180°, and the clamping block 38 again pushes the pushing plate 381 inward under the action of the pushing slider 25 to clamp the guardrail, and the punch 33 punches holes in the guardrail, thereby completing the punching of both ends of the guardrail.

[0049] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An automatic punching device for a galvanized highway guardrail, comprising a base (1), a rotating device (2), and a punching device (3), characterized in that: A rotating device (2) is connected above the base (1), and two punching devices (3) are located at the left and right ends above the rotating device (2), and the positions of the two punching devices (3) are arranged symmetrically with respect to the base (1). The tops of the two punching devices (3) are both connected to the lower end of the distance adjusting device (4), and the upper mounting end of the distance adjusting device (4) is connected to the free end. The rotating device (2) comprises a rotating base (21) arranged on the base (1), the lower end of the rotating base (21) is connected to a motor (27), the motor (27) is arranged inside the base (1), a support plate (26) is arranged on the upper side of the middle part of the rotating base (21), and the front and rear ends of the rotating base (21) are respectively provided with directional sliding grooves (28), two directional sliders (23) are respectively arranged at the left and right ends of the rotating base (21), and the front and rear ends of the directional sliders (23) are respectively slidably installed with the directional sliding grooves (28), the upper part of the directional slider (23) is connected to a support block (24), the middle part of the two directional sliders (23) is connected to a support position adjustment screw by threaded engagement, and one end of the support position adjustment screw passes through the rotating base (21) and is connected to a manipulation handle; The punching device (3) comprises a T-shaped plate (31) located above the rotating device (2), an adjusting slot (32) is provided on the vertical section of the T-shaped plate (31), a punch push rod (39) is fixedly installed on the bottom of the ends of the T-shaped plates (31) on the two punching devices (3) that are away from each other, a plurality of punches (33) are provided on the bottom of the ends of the T-shaped plates (31) on the two punching devices (3) that are close to each other, and two punch slides (34) are provided on the side of the vertical section of the T-shaped plate (31) close to the punch (33), each punch slide A punch slider (35) is slidably mounted inside the groove (34), and two punches (33) are fixedly connected to the inner side of each punch slider (35). A square telescopic rod (36) is connected between the two corresponding punch sliders (35) on each T-shaped plate (31). The middle part of the square telescopic rod (36) is a fixed end, and its two ends are telescopic ends. The telescopic ends of the square telescopic rod (36) are respectively connected to the punch slider (35), and the fixed end of the square telescopic rod (36) is connected to the punch push rod (39) through a connecting rod (37); The lower end of the punch (33) corresponding to the punch slider (35) at the left end is tilted inward, and the lower end of the punch (33) corresponding to the punch slider (35) at the right end is tilted outward, and two punches (33) are installed at the bottom of the T-shaped plate (31) at the left end, and the punch (33) on the T-shaped plate (31) is located between the punches (33) corresponding to the two punch sliders (35); The middle part of one end of the guardrail is punched by the punch head (33) at the left end, and the two side parts of the other end of the guardrail are punched by the punch head (33) at the right end. The punching is performed again after the rotating device (2) rotates 180 degrees, thereby achieving punching of holes at both ends of the guardrail.

2. The automatic punching device for galvanized highway guardrail according to claim 1 is characterized in that: The lower side of the rotating base (21) is provided with two positioning grooves (22), and the left and right ends of the base (1) are respectively fixedly installed with convex plates (12), and two positioning triangular blocks (11) are installed inside the convex plates (12). The upper ends of the positioning triangular blocks (11) are positioned and inserted into the positioning grooves (22), and the lower ends of the positioning triangular blocks (11) are provided with insertion rods (13), which pass through the convex plates (12), and the middle part of the insertion rods is an elastic telescopic structure.

3. The automatic punching device for galvanized highway guardrail according to claim 1 is characterized in that: The left and right ends of the rotating base (21) are fixedly mounted with push sliders (25); the lower end of the outer side of the T-shaped plate (31) is mounted with a clamping block (38) corresponding to the position of the push slider (25); and one end of the clamping block (38) and the push slider (25) close to each other is set as an inclined surface. The clamping block (38) and the T-shaped plate (31) are slidably connected. When the punching device (3) moves downward, the clamping block (38) and the push slider (25) cooperate with each other on the inclined surface to drive the clamping block (38) to move inward and clamp the guardrail.

4. The automatic punching device for galvanized highway guardrail according to claim 3 is characterized in that: The middle portion of the clamping block (38) is an elastic telescopic structure, and a pushing plate (381) is installed at one end of the clamping block (38) away from its inclined surface structure.

5. The automatic punching device for galvanized highway guardrail according to claim 1, characterized in that: The distance adjustment device (4) comprises a distance adjustment support (41) connected to the upper free end, and distance adjustment sliders (43) are respectively slidably provided at the left and right ends of the distance adjustment support (41), and a punching position adjustment screw is provided between the two distance adjustment sliders (43), one end of the punching position adjustment screw passes through the distance adjustment support (41) and is connected to a manipulation handle, and the lower ends of the distance adjustment sliders (43) at both ends are connected to distance adjustment push rods (42), and the lower ends of the distance adjustment push rods (42) are respectively connected to the punching device (3).

6. The automatic punching device for galvanized highway guardrail according to claim 5, characterized in that: The distance adjustment support (41) and the rotating base (21) are respectively provided with scale marks, and the distance adjustment slider (43) and the directional slider (23) are respectively provided with scale pointers.

7. The automatic punching device for galvanized highway guardrail according to claim 1, characterized in that: The support block (24) is mounted on the directional slider (23) in a detachable connection manner, and the upper side of the support block (24), the upper side of the support plate (26) and the upper side of the rotating base (21) are all located on the same horizontal plane.

8. The automatic punching device for galvanized highway guardrail according to claim 7, characterized in that: The upper portion of the support block (24) is provided with a plurality of fitting protrusions (241) corresponding to the guardrail structure. The fitting protrusions (241) are hollow inside and punching holes are provided at positions corresponding to the punches (33). The support block (24) is provided with a plurality of models. The fitting protrusions (241) on each model of the support block (24) can be punched for different models of guardrails.

9. The automatic punching device for galvanized highway guardrail according to claim 1, characterized in that: The punching head of the punch (33) is configured as a threaded detachable structure, thereby facilitating replacement of punching heads of different models.

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