Double-end punching positioning tool for cylinder guardrail rod

Abstract

The utility model discloses a kind of double-end punching positioning tool of cylindrical guardrail rail, is related to guardrail auxiliary processing device technical field, including fixed frame and bracket set on fixed frame;Bracket is provided with the supporting groove for the guardrail rail clamping into;The supporting height of supporting groove is consistent with the clamping height of puncher, so that the guardrail rail supported between the two is kept horizontal;Two side walls of supporting groove are oppositely provided with positioning hole, and the diameter of positioning hole is same with the diameter of punching;Positioning pin is detachably installed in positioning hole;When the punching of one end of guardrail rail is completed, punch the other end, overturn guardrail rail, adjust the punching of guardrail rail to make it align with positioning hole, then install positioning pin between the two again.By setting fixed frame and bracket, bracket is provided with supporting groove, positioning hole is set on the two side walls of supporting groove, and positioning pin is detachably installed in positioning hole, solve the problem of error existing in manual visual inspection or measurement, improve guardrail rail processing precision and installation quality.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary processing devices for guardrails, and in particular to a double-end punching and positioning fixture for cylindrical guardrails. Background Technology

[0002] In the production and processing of guardrails, guardrails are typically cylindrical structures with mounting holes punched at both ends. These mounting holes are through holes that penetrate the entire guardrail for subsequent installation of posts. Currently, during the punching process, the guardrail is laid flat, with its ends clamped by jigs, and punches are made simultaneously from both sides towards the middle to punch a hole at one end. However, when punching the other end, it is crucial to ensure that the holes at both ends are aligned in a straight line, which is essential for the installation quality of the guardrail.

[0003] Existing methods for ensuring that the punched holes at both ends are aligned mainly rely on manual visual inspection or measurement. However, manual visual inspection is subject to significant subjective errors, and while measurement methods are relatively accurate, in practice, factors such as the precision of measuring tools, the operator's skill level, and environmental interference make it difficult to completely eliminate errors. These errors can cause the punched holes at both ends to be misaligned, leading to improper installation of the posts, affecting the overall stability and aesthetics of the guardrail, and potentially posing safety hazards. Utility Model Content

[0004] The purpose of this utility model is to provide a double-end punching positioning fixture for cylindrical guardrails, so as to solve the problem that errors exist in the existing technology of manually visually inspecting or measuring to ensure that the punching holes at both ends are on a straight line, resulting in the incomplete installation of the posts. It can accurately and efficiently ensure that the punching positions at both ends of the cylindrical guardrail correspond, thereby improving the processing quality and installation accuracy of the guardrail.

[0005] To achieve the above objectives, this utility model provides a double-end punching and positioning fixture for a cylindrical guardrail, including a fixed frame and a bracket mounted on the fixed frame. The fixed frame is fixed to the ground and located at the end of the guardrail away from the punching machine. The bracket is provided with a groove for the guardrail to be inserted. The support height of the groove is consistent with the clamping height of the punching machine, so that the guardrail supported between the two remains horizontal. Positioning holes are provided on opposite sides of the groove. The axial height of the positioning holes is parallel to the axis of the punch and located on the same horizontal plane. The diameter of the positioning holes is the same as the diameter of the punching holes. A positioning pin is detachably installed in the positioning holes. When punching one end of the guardrail is completed, when punching the other end, the guardrail is flipped over, the punching of the guardrail is adjusted to align with the positioning holes, and then the positioning pin is installed between the two.

[0006] With the above structure, by setting up a fixed frame and a bracket, the fixed frame is fixed to the ground and located at the end of the guardrail away from the punching machine. The bracket is provided with a support groove, and the support height of the support groove is consistent with the clamping height of the punching machine, which can keep the guardrail horizontal and help ensure the verticality and positional accuracy of the punching. The two side walls of the support groove are provided with positioning holes that are parallel to the axis of the punch and located on the same horizontal plane, with the same diameter as the punching diameter. Positioning pins can be detachably installed in the positioning holes. When the guardrail is punched at one end and flipped to punch the other end, the position of the punching at the other end can be accurately fixed, ensuring that the punching at both ends is on the same straight line. This effectively solves the problem of errors caused by manual visual inspection or measurement, and improves the processing accuracy and installation quality of the guardrail.

[0007] Preferably, a roller conveyor line is also installed between the fixed frame and the punching machine. The roller conveyor line is supported at the bottom of the guardrail, and the height of the roller surface of the conveyor line is consistent with the support height of the tray and the clamping height of the punching machine. This structural design provides support and conveying during the punching process, increases the intermediate support of the guardrail, and prevents deformation. It also reduces the difficulty of clamping the guardrail onto the punching machine, reduces the intensity of handling work, and improves work efficiency.

[0008] Preferably, each end of the guardrail has two punched holes, and two sets of positioning holes are provided accordingly. This structural design reduces stress concentration in single-hole positioning, better ensures positioning effect, and guarantees accurate correspondence between the punched holes at both ends.

[0009] Preferably, one end of the locating pin is equipped with a lifting ring. This design facilitates the installation and removal of the locating pin by the operator, improving operational efficiency and reducing operation time. Preferably, limiting rollers are rotatably installed on both side walls of the tray, with the guardrail clamped between the limiting rollers on both sides; a support roller is rotatably installed at the bottom of the tray, supporting the guardrail above the support roller. This structural design limits the guardrail from both sides, preventing lateral swaying during punching; the rotatable support roller at the bottom of the tray, with the guardrail supported above the support roller, reduces friction between the guardrail and the bottom of the tray, allowing for smoother movement and position adjustment of the guardrail within the tray.

[0010] Preferably, two sets of limiting rollers are provided along the extension direction of the guardrail, and positioning pins are installed between the two sets of limiting rollers. This structural design further enhances the limiting effect on the guardrail and improves its stability during the punching process.

[0011] Preferably, two sets of rollers are provided along the extension direction of the guardrail. This structural design further enhances the support for the guardrail, making it more stable during the punching process.

[0012] Preferably, the top of the limiting roller is provided with a guide slope that slopes inward toward the groove to facilitate the insertion of the guardrail. This structural design makes it easier for the guardrail to be inserted into the groove, reducing the difficulty of operation and shortening the operation time.

[0013] Preferably, the mounting bracket is fixed to the ground by bolts. This structural design ensures a stable connection between the mounting bracket and the ground, providing reliable support for the entire tooling.

[0014] Preferably, a fastener can be selectively installed at one end of the locating pin that protrudes from the locating hole. This structural design further enhances the fixing effect of the locating pin, preventing it from loosening or falling off during punching, thus ensuring punching accuracy and quality.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are: This utility model provides a double-end punching positioning fixture for cylindrical guardrails, which solves the problem in the prior art where manual visual inspection or measurement to ensure that the punching holes at both ends are on a straight line results in errors, leading to improper installation of the posts. It can accurately and efficiently ensure that the punching holes at both ends of the cylindrical guardrail correspond, improving the processing quality and installation accuracy of the guardrail. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the installation position of a double-end punching positioning fixture for a cylindrical guardrail according to this utility model; Figure 2 This is a schematic diagram of the structure of a cylindrical guardrail double-end punching positioning fixture according to the present invention; Figure 3 yes Figure 2 A schematic diagram of a conveyor line without rollers; Figure 4 yes Figure 3 Side view; Figure 5 yes Figure 2 A vertical sectional view is taken along the central axis of the guardrail.

[0017] In the diagram, 1 is the fixed frame, 11 is the base plate, 12 is the column, 2 is the bracket, 21 is the positioning pin, 211 is the lifting ring, 22 is the limiting roller, 221 is the guide slope, 23 is the idler roller, 3 is the guardrail, 4 is the punching machine, and 5 is the roller conveyor line. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] The orientations mentioned in this specification are based on the orientation of the cylindrical guardrail double-end punching positioning fixture when it is working normally. They do not limit the orientation during storage and transportation, and only represent relative positional relationships, not absolute positional relationships.

[0020] like Figure 1 , Figure 2 and Figure 3 As shown in the figure, a double-end punching positioning fixture for a cylindrical guardrail includes a fixed frame 1 and a bracket 2 mounted on the fixed frame 1.

[0021] The fixing frame 1 is fixed to the ground and located at the end of the guardrail 3 furthest from the punching machine 4. The fixing frame 1 includes a base plate 11 and uprights 12 fixed to the base plate 11; a bracket 2 is fixed to the top of the uprights 12. As the supporting foundation for the entire tooling, the stability of the fixing frame 1 directly affects the tooling's performance. The fixing frame 1 is fixed to the ground by bolts. Bolt connections offer advantages such as convenient installation and disassembly, and a secure connection, ensuring a stable connection between the fixing frame 1 and the ground, providing reliable support for the entire tooling.

[0022] The bracket 2 is provided with a slot for the guardrail 3 to be inserted; in this embodiment, the slot is a U-shaped slot. The slot design allows the guardrail 3 to be placed conveniently on the tooling and also plays a certain role in positioning and fixing. The support height of the slot is consistent with the clamping height of the punching machine 4, so that the guardrail 3 supported between the two remains horizontal; during the punching process, keeping the guardrail 3 horizontal is crucial to ensuring the verticality and positional accuracy of the punching. Only when the guardrail 3 is horizontal can the punch be ensured to be evenly stressed during punching and the punched hole position be accurate. Positioning holes are provided on the two side walls of the slot, with the axis height of the positioning holes parallel to the axis of the punch of the punching machine 4 and located on the same horizontal plane. The diameter of the positioning holes is the same as the diameter of the punching hole. This design makes the positioning holes correspond to the punch of the punching machine 4 in spatial position. When the guardrail 3 is placed in the slot, the positioning holes can accurately correspond to the punching position on the guardrail 3. A positioning pin 21 is detachably installed inside the positioning hole. The function of the positioning pin 21 is to flip the guardrail 3 after punching a hole at one end of the guardrail 3 and then punch a hole at the other end, adjust the punching of the guardrail 3 to align it with the positioning hole, and then install the positioning pin 21 between the two.

[0023] By setting positioning holes corresponding to the position of the punch of the punching machine 4 and detachable positioning pins 21, the position of the punch at the other end can be accurately fixed after punching at one end of the guardrail 3, ensuring that the punches at both ends are on the same straight line. This effectively solves the problem of errors caused by manual visual inspection or measurement in the prior art, and greatly improves the processing accuracy and installation quality of the guardrail 3.

[0024] Because each end of the existing guardrail 3 has two punched holes, in order to reduce the stress concentration of single hole positioning, two sets of positioning holes are also set on the bracket, and correspondingly, two positioning pins 21 are also set.

[0025] One end of the locating pin 21 protruding from the locating hole can be optionally fitted with a fastener. The installation of the fastener further enhances the fixing effect of the locating pin 21, preventing it from loosening or falling off during punching, thus ensuring the accuracy and quality of the punching. The fastener can be a spring pin, nut, or cotter pin, etc., as long as it allows for quick disassembly; this embodiment does not impose any restrictions on this.

[0026] Furthermore, a lifting ring 211 is provided at one end of the positioning pin 21. The design of the lifting ring 211 facilitates the installation and removal of the positioning pin 21 by the operator, improving operating efficiency and reducing operating time.

[0027] To further optimize the tooling, the following additional technical features can be set: A roller conveyor line 5 is installed between the fixed frame 1 and the punching machine 4, and the roller conveyor line 5 is supported at the bottom of the guardrail 3. The height of the roller surface of the roller conveyor line 5 is consistent with the support height of the tray and the clamping height of the punching machine. The roller conveyor line 5 can play a supporting and conveying role during the punching process of the guardrail 3, increase the intermediate support of the guardrail 3, and prevent the guardrail 3 from deforming; at the same time, it reduces the difficulty of clamping the guardrail 3 onto the punching machine 4, reduces the labor intensity of handling the guardrail 3, and improves work efficiency.

[0028] Example 2: This embodiment is a further improvement on Embodiment 1.

[0029] Limiting rollers 22 are rotatably installed on both sides of the tray, and the guardrail 3 is clamped between the limiting rollers 22 on both sides; a support roller 23 is rotatably installed on the bottom of the tray, and the guardrail 3 is supported above the support roller 23. The limiting rollers 22 can limit the guardrail 3 from both sides to prevent the guardrail 3 from swaying left and right during the punching process; the support roller 23 can reduce the friction between the guardrail 3 and the bottom of the tray, so that the guardrail 3 can move and adjust its position more smoothly in the tray.

[0030] Furthermore, two sets of limiting rollers 22 are arranged along the extension direction of the guardrail 3, and positioning pins 21 are installed between the two sets of limiting rollers 22. Two sets of support rollers 23 are arranged along the extension direction of the guardrail 3. The arrangement of multiple sets of limiting rollers 22 and support rollers 23 can further enhance the limiting and supporting effect on the guardrail 3, and improve the stability of the guardrail 3 during the punching process.

[0031] Furthermore, such as Figure 4 As shown, the top of the limiting roller 22 is provided with a guide slope 221 that slopes inward toward the inside of the slot, so that the guardrail 3 can be easily inserted. The design of the guide slope 221 makes it easier and more accurate for the operator to put the guardrail 3 into the slot, reducing the difficulty and time of operation.

[0032] In this embodiment, the installation of components such as the roller conveyor line 5, the limiting roller 22, and the idler roller 23 makes the movement of the guardrail 3 during the punching process smoother, further improving production efficiency.

[0033] like Figures 1-5 As shown in the figure, the operation process of a double-end punching and positioning fixture for a cylindrical guardrail is as follows: Place the cylindrical guardrail 3 to be punched on the roller conveyor line 5, and push one end into the punching machine 4 for clamping and fixing; insert the other end into the bracket. At this time, do not install the positioning pin 21. Start the punching machine 4, and the punch will punch holes in the middle from both sides simultaneously to complete the punching process at one end of the guardrail 3.

[0034] After punching one end, remove the guardrail 3 from the punching machine 4 and flip it so that the other end faces the punching machine 4. Insert the flipped guardrail 3 into the bracket and adjust its position so that the punched end aligns with the positioning holes on both sides of the bracket. Then, insert the positioning pin 21 into the positioning hole and the punched hole, ensuring the positioning pin 21 is securely installed. If a fastener needs to be installed at the end of the positioning pin 21 protruding from the positioning hole, it can be installed to further enhance the positioning effect. Start the punching machine 4 to complete the punching process at the other end. Due to the precise positioning function of the positioning pin 21, it is ensured that the punched holes at both ends are on the same straight line.

[0035] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A double-end punching and positioning fixture for a cylindrical guardrail, characterized in that: Includes a mounting frame and a bracket mounted on the mounting frame; The fixing frame is fixed to the ground and located at the end of the guardrail away from the punching machine; The bracket is provided with a groove for the guardrail to be inserted; the support height of the groove is consistent with the clamping height of the punching machine, so that the guardrail supported between the two remains horizontal; positioning holes are provided on the two side walls of the groove, the axis height of the positioning holes is parallel to the punch axis of the punching machine and located on the same horizontal plane, and the diameter of the positioning holes is the same as the diameter of the punch; a positioning pin is detachably installed in the positioning hole; After punching holes at one end of the guardrail, when punching holes at the other end, flip the guardrail over, adjust the punching holes of the guardrail so that they are aligned with the positioning holes, and then install the positioning pins between the two.

2. The cylindrical guardrail double-end punching and positioning fixture according to claim 1, characterized in that: A roller conveyor line is also provided between the fixed frame and the punching machine, and the roller conveyor line is supported at the bottom of the guardrail; the roller surface height of the roller conveyor line is consistent with the support height of the groove and the clamping height of the punching machine.

3. The cylindrical guardrail double-end punching and positioning fixture according to claim 1, characterized in that: Each end of the guardrail has two punched holes, and two sets of positioning holes are provided accordingly.

4. The cylindrical guardrail double-end punching and positioning fixture according to claim 1, characterized in that: One end of the positioning pin is provided with a lifting ring.

5. The cylindrical guardrail double-end punching and positioning fixture according to claim 1, characterized in that: Limiting rollers are rotatably installed on both sides of the tray, and the guardrail is clamped between the two limiting rollers. The bottom of the tray is rotatably mounted with a roller, and the guardrail is supported above the roller.

6. The cylindrical guardrail double-end punching and positioning fixture according to claim 5, characterized in that: Two sets of limiting rollers are provided along the extension direction of the guardrail, and the positioning pin is installed between the two sets of limiting rollers.

7. A double-end punching and positioning fixture for a cylindrical guardrail according to claim 5, characterized in that: Two sets of rollers are provided along the extension direction of the guardrail.

8. A double-end punching and positioning fixture for a cylindrical guardrail according to claim 5, characterized in that: The top of the limiting roller is provided with a guide slope that is inclined inward toward the groove, so that the guardrail can be engaged.

9. A double-end punching and positioning fixture for a cylindrical guardrail according to claim 1, characterized in that: The mounting bracket is fixedly connected to the ground by bolts.

10. A double-end punching and positioning fixture for a cylindrical guardrail according to claim 1, characterized in that: One end of the positioning pin that protrudes from the positioning hole can be used to selectively install fasteners.

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