Multifunctional hydraulic cylinder welding clamp

Abstract

The utility model discloses a multifunctional hydraulic cylinder welding fixture, which relates to the technical field of welding fixtures and comprises a bottom plate, a fixed guide rail and a plurality of positioning guide rails are arranged on the bottom plate, a slidable fixed fixture is fixed on the positioning guide rails and comprises a clamping block, and the clamping block is attached to the top of a hydraulic cylinder. The fixed guide rail is provided with a fixed base, the fixed base is connected with a V-shaped block, and a plurality of slidable welding clamps are fixed on the positioning guide rail; and through cooperation of the V-shaped block and the clamping block, it is ensured that the hydraulic cylinder cannot rotate, it is ensured that the welding position is unchanged, and the welding precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding fixtures, in particular to a multifunctional hydraulic cylinder welding fixture. Background Art

[0002] Many oil ports or joints on hydraulic cylinders need to be welded on the cylinder barrel, and the angles are varied to best meet the location requirements for installing connecting pipes. Traditionally, the welding positioning of oil ports or joints is generally achieved by marking or a single positioning device, which requires different fixtures to operate, resulting in troublesome production management, high costs, and insufficient product precision.

[0003] As disclosed in Chinese patent CN108788591A, published on November 13, 2018, the utility model includes three guide rails: left, middle and right. The angle ruler base is fixed to the upper end of the left or right guide rail by bolt C, and one end of the angle ruler is fixedly connected to the angle ruler base by the angle ruler locking screw. The middle guide rail and the left and right guide rails are located in the middle of the left and right guide rails. The left, middle and right guide rails are all fixedly connected to the bottom plate. The front and rear ejector bases and the upper end of the middle guide rail are fixedly connected by bolts B, and the two ejectors are each fixedly connected to an ejector base. An arc groove is provided on the angle ruler, and the slider locking screw passes through the arc groove and is threadedly connected to the slider. One end of the slider is connected to the quick clamp, and a positioning device connecting rod is provided between the other end of the slider and the positioning device, one end of the positioning device connecting rod is fixedly connected to the slider, and the other end of the positioning device connecting rod is detachably fixedly connected to one end of the positioning device, and the other end of the positioning device is a cone, and the positioning device is arranged between the front and rear ejectors. Although the device can achieve positioning at various angles, during the welding process, the hydraulic cylinder may rotate due to external forces, causing the welding position to move and reducing the welding accuracy. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing hydraulic cylinder welding device may cause the hydraulic cylinder to rotate during the hydraulic cylinder welding process, thereby reducing the technical problem of welding accuracy. A multifunctional hydraulic cylinder welding fixture is proposed to fix the hydraulic cylinder to prevent the hydraulic cylinder from rotating during the welding process, thereby improving the welding accuracy.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a multifunctional hydraulic cylinder welding fixture, including a base plate, on which a fixed guide rail and a plurality of positioning guide rails are provided, and a slidable fixed fixture is fixed on the positioning guide rail, and the fixed fixture includes a clamping block, and the clamping block is fitted with the top of the hydraulic cylinder, the fixed guide rail is provided with a fixed base, and the fixed base is connected to the V-shaped block, and the positioning guide rail is fixed with a plurality of slidable welding fixtures.

[0006] A multifunctional hydraulic cylinder welding fixture is provided with a fixed guide rail and two positioning guide rails on the bottom plate. The fixed guide rail is between the two positioning guide rails. The fixed guide rail is used to place and fix the hydraulic cylinder. The positioning guide rail is used to set the fixing fixture and the welding fixture. The welding blocks at different positions are fixed by the welding fixtures distributed on the two positioning rails. The fixing fixture consists of a V-shaped block and a clamping block. The inner side of the V-shaped block is inclined and fits the lower two side surfaces of the hydraulic cylinder. The clamping block fits the top of the hydraulic cylinder. The hydraulic cylinder will not rotate through the forces in three directions, thereby improving the welding accuracy.

[0007] Preferably, the V-shaped block is connected to the fixed base by bolts, the fixed base is provided with a sliding groove, a spring is provided in the sliding groove, and the bolt is located in the sliding groove. The bolt is located at the top of the sliding groove, and the lower end is a spring. When the hydraulic cylinder presses on the V-shaped block, the bolt presses the spring downward, thereby adjusting the height of the V-shaped block, and the spring provides an upward force for support.

[0008] Preferably, the clamping block is connected to the bottom of the bracket, and the top of the bracket is connected to a quick clamp. The quick clamp can fix the clamping block at any height without changing.

[0009] Preferably, the two ends of the fixed rail are provided with ejector bases, the ejector base is slidably connected to the fixed rail by bolts, and the ejector base is provided with ejectors parallel to the fixed rail. The ejectors can resist the holes at the two ends of the hydraulic cylinder, thereby preventing the hydraulic cylinder from moving left and right.

[0010] Preferably, the inner sides of the ejector pins on both sides are semicircular ends, and the semicircular ends are embedded in the openings on both sides of the hydraulic cylinder. The ends are embedded in the hydraulic cylinder to prevent the hydraulic cylinder from moving up and down.

[0011] Preferably, the welding fixture is provided with an angle ruler base, the angle ruler base is connected to the slide groove of the positioning guide rail through a T-bolt, and the angle ruler base is connected to the angle ruler. The positioning position is changed by moving the angle ruler on the positioning slide rail.

[0012] Preferably, the bottom of the angle ruler is positioned at the connection position between the angle ruler and the angle ruler base by a positioning pin, and the angle ruler is fixed to the angle ruler base by screws. After the fixing position is determined by the positioning pin, the angle ruler is fixed to the angle ruler base by screws.

[0013] Preferably, the angle plate is provided with an arc-shaped slot, a slidable slider is fixed in the arc-shaped slot by screws, one end of the slider is connected to a quick clamp, and the other end of the slider is connected to a positioning device. The angle of the fixed point is determined by the movement of the slider in the arc-shaped slot, so that the welding blocks at different positions can be fixed.

[0014] The substantial effect of the utility model is that the utility model ensures that the hydraulic cylinder does not rotate through the cooperation of the V-shaped block and the clamping block, ensures that the welding position remains unchanged, and improves the welding accuracy; and realizes welding at different angles of the hydraulic cylinder through the design of the angle ruler. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of embodiment 1.

[0016] Figure 2 It is a top view of the first embodiment.

[0017] Figure 3 It is a left view of the first embodiment.

[0018] Wherein: 1. Base plate, 2. Fixed guide rail, 3. Positioning guide rail, 4. Fixed fixture, 401. Clamping block, 402. Bracket, 403. Quick clamp, 404. V-shaped block, 405. Sliding groove, 5. Welding fixture, 501. Angle ruler base, 502. Angle ruler, 503. Sliding block, 504. Arc-shaped sliding groove, 505. Positioning device, 506. Positioning pin, 507. Bolt, 6. Ejector base, 7. Ejector. DETAILED DESCRIPTION

[0019] The specific implementation of the utility model is further described below through specific embodiments and in conjunction with the accompanying drawings.

[0020] Embodiment one:

[0021] Multifunctional hydraulic cylinder welding fixture 5, such as Figure 1 , Figure 2 and Figure 3 As shown, the utility model mainly includes a base plate 1, on which a fixed guide rail 2 and two positioning guide rails 3 are arranged, the fixed guide rail 2 is located between the two positioning guide rails 3, and the three are parallel to each other and have the same spacing. The fixed guide rail 2 and the positioning guide rail 3 are provided with a T-shaped slide groove adapted to the bolt 507 head of the T-shaped bolt 507, and the cross-sections of the fixed guide rail 2 and the positioning guide rail 3 are congruent.

[0022] The components of the device include T-bolt 507, ejector base 6, T-bolt 507, ejector 7, positioning device 505, slider 503 locking screw, slider 503, quick clamp 403, angle ruler 502, angle ruler 502 locking screw, positioning pin 506, angle ruler base 501. The fixed guide rail 2 is provided with a T-shaped groove that matches the bolt 507 head of the T-bolt 507, and the positioning guide rail 3 is also provided with a T-shaped groove that matches the bolt 507 head of the T-bolt 507. As a preferred embodiment, the cross-sections of the fixed guide rail 2 and the positioning guide rail 3 are congruent. Furthermore, the left and right sides of the fixed guide rail 2 and the positioning guide rail 3 are also provided with corresponding T-shaped grooves, so that the overall replacement cycle of the corresponding guide rails can be increased by rotating the fixed guide rail 2 and the positioning guide rail 3 by 90°, thereby increasing the service life of the corresponding guide rails.

[0023] A thimble base 6 is provided at the front and rear ends of the fixed guide rail 2, respectively, and a thimble 7 is provided on the thimble base 6 parallel to the bottom plate 1. The front and rear thimble bases 6 and the upper end of the fixed guide rail 2 are fixedly connected by corresponding T-bolts 507, and the two thimbles 7 are fixedly connected to one thimble base 6 respectively. The thimble base 6 can move horizontally on the fixed guide rail 2, so as to fix hydraulic cylinders of different lengths. Preferably, the thimble 7 includes a thimble 7 body, a fixed thimble 7 screw and a semicircular end. In this embodiment, the thimble 7 body and the semicircular end of the thimble 7 screw are an integrated structure. The thimble base 6 includes an end wall of the thimble base 6 and a thimble base 6 fixing plate fixedly connected to the lower end of the end wall of the thimble base 6. In this embodiment, the end wall of the thimble base 6 and the thimble base 6 fixing plate are welded together. The specific structural details are simple and technical and will not be repeated here. The thimble base 6 and the upper end of the fixed guide rail 2 are fixedly connected to the thimble base 6 fixing plate by T-bolts 507. The end wall of the ejector base 66 is provided with a threaded hole adapted to the screw of the ejector 7, and the ejector 7 is fixedly connected by the threaded connection between the screw of the ejector 7 and the end wall of the ejector base 6. When the hydraulic cylinder is put on, the semicircular end surface of the ejector 7 will extend from both ends of the hydraulic cylinder. The diameter of the semicircular end surface is larger than the diameter of the hydraulic cylinder, thereby blocking the openings at both ends of the hydraulic cylinder to prevent the hydraulic cylinder from being displaced in the horizontal direction.

[0024] Preferably, the lower end of the ejector base 6 is provided with a base positioning recess, the upper end of the fixed guide rail 2 protrudes into the base positioning recess, the lower end of the angle ruler base 501 is provided with an angle ruler base 501 positioning recess that matches the upper end of the right guide rail, and the upper end of the right guide rail protrudes into the angle ruler base 501 positioning recess. The base positioning recess and the angle ruler base 501 positioning recess are conducive to the rapid positioning of related components and improve work reliability.

[0025] A fixing fixture 4 is provided on the positioning rail 3, and the fixing fixture 4 comprises a V-shaped block 404 provided on the fixed rail 2 and a clamping block 401 fixed on the positioning rail 3. The V-shaped block 404 is formed by two left and right plates perpendicular to the bottom plate 1 connected by screws at the bottom, and the inner sides of the two plates are inclined, which can be suitable for hydraulic cylinders of various diameters. The V-shaped block 404 is fixedly connected to the fixed slide rail through a fixed base, and the V-shaped block 404 is fixed to the fixed base by bolts 507, and the fixed base is fixed to the fixed slide rail by T-bolts 507, and the fixed base can move on the fixed slide rail. The bolt 507 connecting the V-shaped block 404 and the fixed base is located in a sliding groove 405 vertically opened in the fixed base, and a spring is provided in the sliding groove 405, and the spring is located at the lower end of the bolt 507. The spring can make the V-shaped block 404 move up and down, so as to adjust according to the size of the hydraulic cylinder actually welded. The clamping block 401 is connected to the bottom of the bracket 402, and the bracket 402 is connected to the quick clamp 403. The bracket 402 can be extended and retracted, thereby driving the clamping block 401 to move up and down. When the hydraulic cylinder is put on, the clamping block 401 can apply force to the hydraulic cylinder from three directions through the V-shaped block 404, thereby preventing the hydraulic cylinder from rotating.

[0026] After the hydraulic cylinder is fixed, the welding block is placed on the surface of the hydraulic cylinder where welding is required, the welding block is fixed by the welding fixture 5 on the positioning guide rail 3, and then the welding block is welded to the hydraulic cylinder.

[0027] In this embodiment, the hydraulic cylinder is prevented from moving left and right by the ejector pin 7. The semicircular end surface of the ejector pin 7 extends into the hydraulic cylinder to prevent the hydraulic cylinder from moving forward and backward. The V-shaped block 404 and the clamping block 401 are used in combination to prevent the hydraulic cylinder from rotating, thereby ensuring that the welding position will not move during welding and improving the overall welding accuracy.

[0028] Embodiment 2:

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, the utility model mainly includes a base plate 1, on which a fixed guide rail 2 and two positioning guide rails 3 are arranged, the fixed guide rail 2 is located between the two positioning guide rails 3, and the three are parallel to each other and have the same spacing. The fixed guide rail 2 and the positioning guide rail 3 are provided with a T-shaped slide groove adapted to the bolt 507 head of the T-shaped bolt 507, and the cross-sections of the fixed guide rail 2 and the positioning guide rail 3 are congruent.

[0030] The components of the device include T-bolt 507, ejector base 6, T-bolt 507, ejector 7, positioning device 505, slider 503 locking screw, slider 503, quick clamp 403, angle ruler 502, angle ruler 502 locking screw, positioning pin 506, angle ruler base 501. The fixed guide rail 2 is provided with a T-shaped groove that matches the bolt 507 head of the T-bolt 507, and the positioning guide rail 3 is also provided with a T-shaped groove that matches the bolt 507 head of the T-bolt 507. As a preferred embodiment, the cross-sections of the fixed guide rail 2 and the positioning guide rail 3 are congruent. Furthermore, the left and right sides of the fixed guide rail 2 and the positioning guide rail 3 are also provided with corresponding T-shaped grooves, so that the overall replacement cycle of the corresponding guide rails can be increased by rotating the fixed guide rail 2 and the positioning guide rail 3 by 90°, thereby increasing the service life of the corresponding guide rails.

[0031] A thimble base 6 is provided at the front and rear ends of the fixed guide rail 2, respectively, and a thimble 7 is provided on the thimble base 6 parallel to the bottom plate 1. The front and rear thimble bases 6 and the upper end of the fixed guide rail 2 are fixedly connected by corresponding T-bolts 507, and the two thimbles 7 are fixedly connected to one thimble base 6 respectively. The thimble base 6 can move horizontally on the fixed guide rail 2, so as to fix hydraulic cylinders of different lengths. Preferably, the thimble 7 includes a thimble 7 body, a fixed thimble 7 screw and a semicircular end. In this embodiment, the thimble 7 body and the semicircular end of the thimble 7 screw are an integrated structure. The thimble base 6 includes an end wall of the thimble base 6 and a thimble base 6 fixing plate fixedly connected to the lower end of the end wall of the thimble base 6. In this embodiment, the end wall of the thimble base 6 and the thimble base 6 fixing plate are welded together, and the specific structural details are not repeated here because of the simple technology. The thimble base 6 and the upper end of the fixed guide rail 2 are fixedly connected to the thimble base 6 fixing plate by T-bolts 507. The end wall of the ejector base 6 is provided with a threaded hole adapted to the screw of the ejector 7, and the ejector 7 is fixedly connected by the threaded connection between the screw of the ejector 7 and the end wall of the ejector base 6. When the hydraulic cylinder is put on, the semicircular end surface of the ejector 7 will extend from both ends of the hydraulic cylinder. The diameter of the semicircular end surface is larger than the diameter of the hydraulic cylinder, thereby blocking the openings at both ends of the hydraulic cylinder to prevent the hydraulic cylinder from being displaced in the horizontal direction.

[0032] Preferably, the lower end of the ejector base 6 is provided with a base positioning recess, the upper end of the fixed guide rail 2 protrudes into the base positioning recess, the lower end of the angle ruler base 501 is provided with an angle ruler base 501 positioning recess that matches the upper end of the right guide rail, and the upper end of the right guide rail protrudes into the angle ruler base 501 positioning recess. The base positioning recess and the angle ruler base 501 positioning recess are conducive to the rapid positioning of related components and improve work reliability.

[0033] A fixing fixture 4 is provided on the positioning rail 3, and the fixing fixture 4 comprises a V-shaped block 404 provided on the fixed rail 2 and a clamping block 401 fixed on the positioning rail 3. The V-shaped block 404 is formed by two left and right plates perpendicular to the bottom plate 1 connected by screws at the bottom, and the inner sides of the two plates are inclined, which can be suitable for hydraulic cylinders of various diameters. The V-shaped block 404 is fixedly connected to the fixed slide rail through a fixed base, and the V-shaped block 404 is fixed to the fixed base by bolts 507, and the fixed base is fixed to the fixed slide rail by T-bolts 507, and the fixed base can move on the fixed slide rail. The bolt 507 connecting the V-shaped block 404 and the fixed base is located in a sliding groove 405 vertically opened in the fixed base, and a spring is provided in the sliding groove 405, and the spring is located at the lower end of the bolt 507. The spring can make the V-shaped block 404 move up and down, so as to adjust according to the size of the hydraulic cylinder actually welded. The clamping block 401 is connected to the bottom of the bracket 402, and the bracket 402 is connected to the quick clamp 403. The bracket 402 can be extended and retracted, thereby driving the clamping block 401 to move up and down. When the hydraulic cylinder is put on, the clamping block 401 can apply force to the hydraulic cylinder from three directions through the V-shaped block 404, thereby preventing the hydraulic cylinder from rotating.

[0034] The welding fixture 5 includes an angle ruler base 501, which is fixed to the upper end of either of the two positioning rails 3 by a T-bolt 507. One end of the angle ruler 502 is fixedly connected to the angle ruler base 501 by a locking screw of the angle ruler 502. The fixed rail 2 and the positioning rail 3 are respectively fixedly connected to the bottom plate 1 by three T-bolts 507. An arc-shaped slide groove 504 is provided on the angle ruler 502, and the locking screw of the slider 503 passes through the arc-shaped slide groove 504 and is threadedly connected to the slider 503. One end of the slider 503 is connected to the quick clamp 403 [the specific structural details are known technologies and are not described here]. A positioning device 505 connecting rod is provided between the other end of the slider 503 and the positioning device 505. One end of the positioning device 505 connecting rod is fixedly connected to the slider 503 by a threaded structure not shown in the figure. The other end of the positioning device 505 connecting rod is detachably fixedly connected to one end of the positioning device 505 by a threaded structure. The other end of the positioning device 505 is a cone. The positioning device 505 is arranged between the front and rear ejector pins 7. By loosening the locking screw of the slider 503 appropriately, the cone can be rotated to the corresponding position along the arc-shaped slide groove 504 to perform the corresponding welding operation. It has the advantages of simple overall structure and easy use.

[0035] In this embodiment, two angle rulers 502 are provided between the front and rear ejector pins 7. The lower end of the angle ruler 502 is connected to the angle ruler base 501 by two positioning pins 506, and then the angle ruler 502 and the angle ruler base 501 are fixed together by the locking screws of the angle ruler 502. The positioning plane determined by the center line of the two positioning pins 506 is a horizontal plane, and the locking screws of the angle ruler 502 are located above the positioning plane. The specific structural details of the locking screws of the angle ruler 502 fixing the angle ruler 502 and the angle ruler base 501 together are simple technologies and are not described here.

[0036] The welding fixture 5 can move on the positioning rail 3 and move on the angle ruler 502 through the slider 503, so that the positioning device 505 can position the welding block at any position on the hydraulic cylinder. The two positioning rails 3 can be installed with the welding fixture 5. Since the angle ruler 502 has only 180 degrees, the welding fixtures 5 on the two positioning rails 3 can fix one side of the hydraulic cylinder respectively.

[0037] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. Multifunctional hydraulic cylinder welding fixture, characterized in that: It includes a bottom plate, on which a fixed guide rail and a plurality of positioning guide rails are arranged, the positioning guide rail is fixed with a slidable fixing fixture, the fixing fixture includes a clamping block, the clamping block is fitted with the top of the hydraulic cylinder, the fixed guide rail is provided with a fixed base, the fixed base is connected with a V-shaped block, and the positioning guide rail is fixed with a plurality of slidable welding fixtures.

2. The multifunctional hydraulic cylinder welding fixture according to claim 1, characterized in that: The V-shaped block is connected to the fixed base via bolts. The fixed base is provided with a sliding groove. A spring is provided in the sliding groove. The bolt is located in the sliding groove.

3. The multifunctional hydraulic cylinder welding fixture according to claim 1 or 2, characterized in that: The clamping block is connected to the bottom of the bracket, and the top of the bracket is connected to the quick clamp.

4. The multifunctional hydraulic cylinder welding fixture according to claim 1, characterized in that: Ejector bases are provided at both ends of the fixed guide rail. The ejector base is slidably connected to the fixed guide rail via bolts. The ejector base is provided with an ejector parallel to the fixed guide rail.

5. The multifunctional hydraulic cylinder welding fixture according to claim 4, characterized in that: The inner sides of the ejector pins on both sides are opposite to each other and are semicircular ends, and the semicircular ends are embedded in the openings on both sides of the hydraulic cylinder.

6. The multifunctional hydraulic cylinder welding fixture according to claim 1, characterized in that: The welding fixture is provided with an angle ruler base, the angle ruler base is connected to the slide groove of the positioning guide rail through a T-bolt, and the angle ruler base is connected to the angle ruler.

7. The multifunctional hydraulic cylinder welding fixture according to claim 6, characterized in that: The bottom of the angle ruler is positioned at a connection position between the angle ruler and the angle ruler base by a positioning pin, and the angle ruler is fixed to the angle ruler base by screws.

8. The multifunctional hydraulic cylinder welding fixture according to claim 6 or 7, characterized in that: The angle ruler is provided with an arc-shaped slide groove, in which a slidable slider is fixed by screws, one end of the slider is connected to a quick clamp, and the other end of the slider is connected to a positioning device.

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