High-precision longitudinal beam punching positioning device

Abstract

A guide sleeve is mounted on an oil cylinder seat, a guide block matched with the guide sleeve is mounted on a piston rod, a positioning pin with a conical head is mounted on the upper side of the guide block, a top plate is arranged on the upper portion of the guide sleeve, and a positioning hole matched with the positioning pin is formed in the top plate. High-precision positioning of vertical movement of the positioning pin can be achieved through the guide sleeve, the guide block, the conical head and the positioning hole which are matched with each other, limiting supporting of an oil cylinder piston rod is not needed independently, positioning floating deviation in the punching operation process is reduced to the maximum extent, normal vertical lifting of the positioning pin is guaranteed, and high-precision punching operation on a longitudinal beam is achieved.

Description

Technical Field

[0001] The utility model relates to auxiliary positioning equipment for longitudinal beam processing, in particular to a high-precision longitudinal beam punching positioning device. Background Art

[0002] The longitudinal beam is one of the key load-bearing components in the frame. It is usually stamped from low-alloy steel plates, and its cross-section is generally groove-shaped, Z-shaped or box-shaped. During the longitudinal beam punching operation, a punching positioning device is usually used to improve the accuracy of the hole position. Most of the existing punching positioning devices install a positioning pin at the end of the piston rod of the cylinder, and the positioning pin is extended into the hole on the longitudinal beam through the vertical lifting of the piston rod. During the subsequent punching operation, the longitudinal beam will vibrate when impacted. The positioning of the positioning pin by the cylinder piston rod alone is prone to floating deviation beyond the preset range, and may even affect the normal vertical lifting of the cylinder piston rod, making it impossible to achieve high-precision punching operations. Summary of the invention

[0003] The utility model aims to provide a high-precision longitudinal beam punching positioning device, which realizes high-precision positioning of the vertical movement of the positioning pin through matching guide sleeves and guide blocks, cone heads and positioning holes, thereby solving the problems in the prior art.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a high-precision longitudinal beam punching positioning device, including a frame, a cylinder seat installed on the frame, a guide sleeve installed on the upper end of the cylinder seat, a cylinder installed in the cylinder seat, a positioning pin installed on the top of the piston rod of the cylinder, the top of the positioning pin is a cone head, a guide block matching with the guide sleeve is provided on the outer periphery of the piston rod at the lower end of the positioning pin, wherein a guide groove is provided on the inner periphery of the guide sleeve, a moving wheel matching with the guide groove is installed on the guide block, a top plate is installed on the upper part of the guide sleeve, a positioning hole matching with the positioning pin is provided on the top plate, and the piston rod of the cylinder can drive the positioning pin to pass through the positioning hole when it is extended. A wheel axle is installed on the guide block, a bearing is provided at the end of the wheel axle, a moving wheel is provided on the outer periphery of the bearing, and a rubber ring is installed between the moving wheel and the bearing. Both sides of the oil cylinder seat and the guide sleeve are installed on the frame through an L-shaped plate, wherein a first long groove is provided on the plate body of the L-shaped plate close to the frame, a first bolt is installed in the first long groove, a screw hole matching the first bolt is provided on the frame, a second long groove is provided on the plate body of the L-shaped plate close to the guide sleeve, a second bolt is installed in the second long groove, and a screw hole matching the second bolt is provided on the oil cylinder seat and the guide sleeve. A threaded hole is provided on the top of the piston rod, and a stud matching the threaded hole is provided at the bottom of the positioning pin. A detachable screw sleeve is installed on the top plate, a limiting convex edge is provided on the upper end of the screw sleeve, and a positioning hole is provided at the center of the screw sleeve.

[0005] The positive effect of the utility model is that a high-precision longitudinal beam punching positioning device described in the utility model has a guide sleeve installed on the cylinder seat, a guide block matching the guide sleeve installed on the piston rod, a locating pin with a cone head installed on the upper side of the guide block, a top plate is arranged on the upper part of the guide sleeve, and a locating hole matching the locating pin is opened on the top plate. The vertical movement of the locating pin can be positioned with high precision through the matching guide sleeve and guide block, cone head and locating hole, and no longer relies solely on the limit support of the cylinder piston rod, thereby minimizing the positioning floating deviation during the punching operation, ensuring the normal vertical lifting of the locating pin, and realizing high-precision punching operation on the longitudinal beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0007] Figure 2 It is the front view of the utility model;

[0008] Figure 3 yes Figure 2 Left view of

[0009] Figure 4 yes Figure 2 A top view of

[0010] Figure 5 yes Figure 2 Middle AA section view;

[0011] Figure 6 yes Figure 5 An enlarged view of the BB section view;

[0012] Figure 7 yes Figure 2 Enlarged view of the CC section view. DETAILED DESCRIPTION

[0013] The utility model discloses a high-precision longitudinal beam punching positioning device, such as Figure 1-5 As shown, it includes a frame 1, on which the longitudinal beam to be processed is placed, and the longitudinal beam is positioned and installed on the frame 1 through a punching positioning device. A cylinder seat 2 is installed on the frame 1, and a guide sleeve 3 is installed on the upper end of the cylinder seat 2. A cylinder 4 is arranged in the cylinder seat 2, and a positioning pin 5 is installed at the top of the piston rod of the cylinder 4, and the top of the positioning pin 5 is a cone head.

[0014] In order to realize the vertical guidance of the locating pin 5, a guide block 6 cooperating with the guide sleeve 3 is provided on the outer periphery of the piston rod at the lower end of the locating pin 5, wherein a guide groove 7 is opened on the inner periphery of the guide sleeve 3, and a moving wheel 8 cooperating with the guide groove 7 is installed on the guide block 6. The setting of the guide groove 7 and the moving wheel 8 can not only play a necessary guiding role in the vertical movement of the locating pin 5, but also effectively reduce the friction of the guide block 6 when it is vertically lifted and lowered along the guide sleeve 3, thereby extending the service life of the guide block 6 and the piston rod.

[0015] A top plate 9 is installed on the upper part of the guide sleeve 3. A positioning hole 10 matching with the positioning pin 5 is provided on the top plate 9. When the piston rod of the oil cylinder 4 is extended, the positioning pin 5 can be driven to pass through the positioning hole 10. The top end of the positioning pin 5 is a cone head. Even if there is a certain deviation between the positioning pin 5 and the positioning hole 10 when the piston rod drives the positioning pin 5 to move vertically upward, the position can be automatically corrected through the vertical contact between the cone head and the outer periphery of the positioning hole 10. The support and positioning of the positioning pin 5 are realized through the positioning hole 10 on the top plate 9 and the matching guide sleeve 3 and guide block 6, and no longer rely solely on the positioning support of the piston rod, thereby effectively improving the punching positioning accuracy of the longitudinal beam.

[0016] Furthermore, in order to facilitate the automatic deviation correction when the positioning pin 5 passes through the positioning hole 10, so that the guide block 6 can float within the guide sleeve 3 within the allowable range, the guide block 6 is installed with a wheel shaft 11, such as Figure 6 As shown, a bearing 12 is provided at the end of the wheel shaft 11 , a moving wheel 8 is sleeved on the outer periphery of the bearing 12 , and a rubber ring 13 is installed between the moving wheel 8 and the bearing 12 .

[0017] The rubber ring 13 is an elastic compressible component, which can withstand the lateral and longitudinal squeezing force when the guide block 6 moves relative to the guide sleeve 3, so that the guide block 6 can shake or float within the guide sleeve 3 within a certain range, so as to achieve the guide deviation correction of the positioning pin 5 in the positioning hole 10, and ensure that the positioning pin 5 extends out of the positioning hole 10 to limit the longitudinal beam with high precision. The elastic deformation of the rubber ring 13 itself will only cause the moving wheel 8 to shake within a small range in the guide groove 7, and will not increase the friction between the guide block 6 and the guide sleeve 3.

[0018] Furthermore, in order to facilitate the punching positioning device to adjust its position on the frame 1 so as to be suitable for different types of longitudinal beams and ensure the high-precision positioning of the positioning pin 5, both sides of the oil cylinder seat 2 and the guide sleeve 3 are installed on the frame 1 through the L-shaped plate 14. The L-shaped plate 14 is provided with a first long groove 15 on the plate body close to the frame 1, and a first bolt 16 is installed in the first long groove 15, and a screw hole matching the first bolt 16 is provided on the frame 1. The L-shaped plate 14 is provided with a second long groove 17 on the plate body close to the guide sleeve 3, and a second bolt 18 is installed in the second long groove 17, and a screw hole matching the second bolt 18 is provided on the oil cylinder seat 2 and the guide sleeve 3.

[0019] After loosening the first bolt 16, the lateral position of the high-precision longitudinal beam punching positioning device on the frame 1 can be adjusted. After the adjustment is completed, the first bolt 16 can be tightened to achieve locking of the lateral position on the frame 1. After loosening the second bolt 18, the longitudinal position of the high-precision longitudinal beam punching positioning device on the frame 1 can be adjusted. After the adjustment is completed, the second bolt 18 can be tightened to achieve locking of the longitudinal position on the frame 1.

[0020] During the vertical lifting of the locating pin 5, contact friction is mainly generated between the locating pin 5 and the locating hole 10 on the top plate 9. The rolling friction of the moving wheel 8 between the guide block 6 and the guide sleeve 3 will not affect the normal use of the component. After long-term use, the matching accuracy of the locating pin 5 and the locating hole 10 decreases and cannot meet the use requirements. It is necessary to replace the locating pin 5 on the top plate 9 and the piston rod.

[0021] In order to facilitate the removal and replacement of the positioning pin 5, Figure 7 As shown, a threaded hole is provided at the top of the piston rod, and a stud 19 matching the threaded hole is provided at the bottom of the positioning pin 5. In order to avoid replacing the entire top plate 9, a detachable screw sleeve 20 is installed on the top plate 9, and a limiting convex edge 21 is provided at the upper end of the screw sleeve 20, and a positioning hole 10 is provided at the center of the screw sleeve 20. The detachable positioning pin 5 and screw sleeve 20 can be replaced regularly after a set use cycle as wearing parts. The above components are not only easy to disassemble and replace, improve maintenance efficiency, reduce the maintenance cost of the overall device, and extend the service life of the device, but also ensure high-precision positioning of the longitudinal beam punching during subsequent use.

[0022] The technical solution of the present invention is not limited to the scope of the embodiments described in the present invention. The technical contents not described in detail in the present invention are all known technologies.

Claims

1. A high-precision longitudinal beam punching positioning device, characterized in that: The invention comprises a frame (1), a cylinder seat (2) is mounted on the frame (1), a guide sleeve (3) is mounted on the upper end of the cylinder seat (2), a cylinder (4) is arranged in the cylinder seat (2), a positioning pin (5) is mounted on the top end of the piston rod of the cylinder (4), the top end of the positioning pin (5) is a cone head, a guide block (6) matching with the guide sleeve (3) is arranged on the outer periphery of the piston rod at the lower end of the positioning pin (5), a guide groove (7) is arranged on the inner periphery of the guide sleeve (3), a moving wheel (8) matching with the guide groove (7) is mounted on the guide block (6), a top plate (9) is mounted on the upper part of the guide sleeve (3), a positioning hole (10) matching with the positioning pin (5) is arranged on the top plate (9), and the piston rod of the cylinder (4) can drive the positioning pin (5) to pass through the positioning hole (10) when it is extended.

2. A high-precision longitudinal beam punching and positioning device according to claim 1, characterized in that: A wheel axle (11) is mounted on the guide block (6), a bearing (12) is provided at the end of the wheel axle (11), a moving wheel (8) is sleeved on the outer periphery of the bearing (12), and a rubber ring (13) is mounted between the moving wheel (8) and the bearing (12).

3. A high-precision longitudinal beam punching and positioning device according to claim 1, characterized in that: Both sides of the oil cylinder seat (2) and the guide sleeve (3) are mounted on the frame (1) via an L-shaped plate (14), wherein a first long groove (15) is provided on a plate body of the L-shaped plate (14) close to the frame (1), a first bolt (16) is mounted in the first long groove (15), a screw hole matching the first bolt (16) is provided on the frame (1), a second long groove (17) is provided on a plate body of the L-shaped plate (14) close to the guide sleeve (3), a second bolt (18) is mounted in the second long groove (17), and screw holes matching the second bolt (18) are provided on the oil cylinder seat (2) and the guide sleeve (3).

4. A high-precision longitudinal beam punching and positioning device according to claim 1, characterized in that: A threaded hole is provided at the top of the piston rod, and a stud (19) matching the threaded hole is provided at the bottom of the positioning pin (5).

5. The high-precision longitudinal beam punching and positioning device according to claim 1, characterized in that: A detachable screw sleeve (20) is mounted on the top plate (9), a limiting convex edge (21) is provided at the upper end of the screw sleeve (20), and a positioning hole (10) is provided at the center of the screw sleeve (20).

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