A cylinder built-in welding tool

Abstract

The present invention discloses a cylinder built-in welding tool, and relates to the technical field of cylinder welding. The present invention comprises a frame, a bracket is arranged on the top of the frame, a fixed guide assembly is fixedly installed on the left side of the bracket, a lateral movement assembly is arranged on the top of the frame, a mobile frame is fixedly installed on the top of the lateral movement assembly, a mobile guide assembly is fixedly installed on the right side of the mobile frame, the fixed guide assembly has the same structure as the mobile guide assembly, and also comprises a clamping spiral tube, the clamping spiral tube is connected with the fixed tube, and an inner spiral support bar is arranged inside the clamping spiral tube. The present invention increases the support strength of the clamping spiral tube by injecting high-pressure water flow into the clamping spiral tube, and limits the two ends of the clamping spiral tube on the bracket and the mobile frame, the inner support rod provides the vertical support force of the clamping spiral tube, and can stably clamp the cylinder internally, the clamping part is spiral, the force on the inner wall of the cylinder is more uniform, and the clamping quality is high.

Description

Technical Field

[0001] The invention relates to the technical field of cylinder welding, and in particular to a cylinder built-in welding tool. Background Art

[0002] A cylinder is a cylindrical metal part that guides the piston to perform linear reciprocating motion in the cylinder. In the manufacturing process of the cylinder, welding is a common process. Some cylinders need to be welded with accessories during processing, such as sensor brackets or mounting brackets and other supporting parts to enhance the stability and support of the structure.

[0003] Since the process accuracy of the inner wall of the cylinder is crucial to its performance, the process accuracy of the inner wall of the cylinder is required to be high. Therefore, the existing cylinder welding clamping tooling currently clamps the cylinder from the outside. The external surface clamping is likely to interfere with the bracket welding. At the same time, the temperature is high during the welding process, and the cylinder material undergoes thermal deformation. This deformation may affect the inner diameter and geometry of the cylinder, and thus affect its performance and sealing. In addition, some tooling that uses built-in clamping has either point or line clamping contact positions. During the welding process, there is still a gap between the thermal deformation of the clamping position and other positions, which seriously affects the process accuracy of the inner wall of the cylinder. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems and provide a cylinder built-in welding tool.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A cylinder built-in welding tool comprises a frame, a bracket is arranged on the top of the frame, a fixed guide assembly is fixedly installed on the left side of the bracket, a transverse movement assembly is arranged on the top of the frame, a mobile frame is fixedly installed on the top of the transverse movement assembly, and a mobile guide assembly is fixedly installed on the right side of the mobile frame, the fixed guide assembly has the same structure as the mobile guide assembly, the fixed guide assembly comprises a fixed tube fixedly installed on the left side of the bracket, a plurality of groups of sliding frames are annularly arranged on the outer side of the fixed tube, a guide block is slidably connected to the inside of the sliding frame, a top spring is arranged between the guide block and the fixed tube, a locking assembly is arranged on the side of the guide block away from the fixed tube, and the locking assembly can lock the guide block in the sliding frame, and an inner support rod is fixedly installed on the left side of the guide block in the fixed guide assembly, and the inner support rod passes through the guide block in the movable guide assembly;

[0007] It also includes a clamping spiral tube, which is connected to the fixed tube, and an inner spiral strut is arranged inside the clamping spiral tube. A cooling water tank is fixedly installed on the left side of the frame, and a high-pressure water pump is fixedly installed on the left side of the cooling water tank. The water inlet end of the high-pressure water pump is connected to the cooling water tank, and the water outlet end of the high-pressure water pump is connected to the fixed tube in the fixed guide assembly through the water outlet pipe. A pressure valve is arranged on the top of the cooling water tank, and the pressure valve is connected to the fixed tube in the movable guide assembly through a return pipe.

[0008] Furthermore, the transverse movement assembly includes a slide rail, a slider, a drive motor, a movable screw and a movable nut. The slide rail is fixedly mounted on the top of the frame, the slider is slidably connected to the slide rail, the movable frame is fixedly mounted on the slider, the drive motor is fixedly mounted on the top of the frame, the movable screw is fixedly connected to the output end of the drive motor, and the movable nut is fixedly mounted on the bottom of the movable frame.

[0009] Furthermore, the locking assembly includes a hydraulic box fixedly mounted on the guide block, the hydraulic box is connected to the fixed tube through a hydraulic pipe, both ends of the hydraulic box are slidably connected with hydraulic clamping rods, a tension spring is arranged between the two groups of hydraulic clamping rods, and the inner wall of the sliding frame is provided with multiple groups of locking grooves, and the hydraulic clamping rods can be inserted into the locking grooves.

[0010] Furthermore, a baffle is fixedly mounted on the outer side of the sliding frame by bolts.

[0011] Furthermore, a through opening is provided inside the baffle, and the hydraulic box can pass through the through opening.

[0012] Furthermore, the cross section of the clamping spiral tube is rectangular.

[0013] Furthermore, a nut joint is provided at the right end of the clamping spiral tube, and a threaded joint is provided at the left side of the fixed tube in the fixed guide assembly, and the nut joint can be threadedly connected to the threaded joint.

[0014] Furthermore, a quick-connect connector is provided at the left end of the clamping spiral tube, and a quick-connect sleeve is provided at the right side of the fixed tube in the movable guide assembly.

[0015] Furthermore, a branch pipe is arranged on the outer side of the reflux pipe, and the branch pipe is connected to the cooling water tank through a drain valve.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The present invention increases the supporting strength of the clamping spiral tube by injecting high-pressure water into the clamping spiral tube, and limits the two ends of the clamping spiral tube by the bracket and the movable frame. The inner support rod provides vertical supporting force for the clamping spiral tube, which can stably clamp the cylinder internally. The clamping part is spiral-shaped, the force on the inner wall of the cylinder is more uniform, and the clamping quality is high.

[0018] 2. During welding, the high-pressure water flows through the inner wall of the cylinder in a spiral shape, which can quickly take away the heat generated during welding and effectively prevent the inner wall of the cylinder from thermal deformation.

[0019] 3. The present invention pulls the clamping spiral tube, which drives the inner support rods to be folded together, making loading and unloading convenient. Moreover, through the design of the clamping spiral tube, it can be applied to the clamping of cylinders with different lengths and inner diameters, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of welding clamping of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 3 It is an exploded view of the present invention;

[0023] Figure 4 is an exploded view of the fixed guide assembly of the present invention;

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the hydraulic box of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the mobile frame and the mobile guide assembly of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the clamping spiral tube of the present invention.

[0027] Figure numerals: 1. frame; 2. fixed guide assembly; 21. slide frame; 22. locking slot; 23. guide block; 24. top spring; 25. hydraulic box; 26. hydraulic pipe; 27. hydraulic clamping rod; 28. tension spring; 29. ​​baffle; 3. movable frame; 31. movable nut; 4. movable guide assembly; 5. clamping spiral tube; 51. inner spiral support bar; 52. nut joint; 53. quick connector; 6. inner support rod; 7. cooling water tank; 8. high-pressure water pump; 9. water outlet pipe; 10. pressure valve; 11. return pipe; 12. branch pipe; 13. drain valve; 14. slide rail; 15. slider; 16. movable screw. DETAILED DESCRIPTION

[0028] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] Embodiment 1, as Figure 1-Figure 7As shown, a cylinder built-in welding tool comprises a frame 1, a bracket is arranged on the top of the frame 1, a fixed guide assembly 2 is fixedly installed on the left side of the bracket, a transverse movement assembly is arranged on the top of the frame 1, a mobile frame 3 is fixedly installed on the top of the transverse movement assembly, a mobile guide assembly 4 is fixedly installed on the right side of the mobile frame 3, the fixed guide assembly 2 has the same structure as the mobile guide assembly 4, the fixed guide assembly 2 comprises a fixed tube fixedly installed on the left side of the bracket, a plurality of groups of slide frames 21 are arranged in an annular manner on the outer side of the fixed tube, four groups are preferably arranged, a guide block 23 is slidably connected inside the slide frame 21, a top spring 24 is arranged between the guide block 23 and the fixed tube, a locking assembly is arranged on the side of the guide block 23 away from the fixed tube, and the locking assembly can lock the guide block 23 in the slide frame 21, an inner support rod 6 is fixedly installed on the left side of the guide block 23 in the fixed guide assembly 2, and the inner support rod 6 passes through the guide block 23 in the mobile guide assembly 4;

[0030] It also includes a clamping spiral tube 5, which is connected to the fixed tube, and an inner spiral support bar 51 is arranged inside the clamping spiral tube 5. A cooling water tank 7 is fixedly installed on the left side of the frame 1, and a high-pressure water pump 8 is fixedly installed on the left side of the cooling water tank 7. The water inlet end of the high-pressure water pump 8 is connected to the cooling water tank 7, and the water outlet end of the high-pressure water pump 8 is connected to the fixed tube in the fixed guide assembly 2 through the water outlet pipe 9. A pressure valve 10 is arranged on the top of the cooling water tank 7, and the pressure valve 10 is connected to the fixed tube in the movable guide assembly 4 through the return pipe 11.

[0031] Loading: The left end of the clamping spiral tube 5 is separated from the fixed tube on the movable guide assembly 4, and the movable frame 3 and the movable guide assembly 4 are moved to the leftmost side through the lateral movement assembly. The left end of the inner support rod 6 is open, and there is enough loading spacing between the inner support rod 6 and the movable guide assembly 4. At this time, the left end of the clamping spiral tube 5 is passed through the cylinder, and then the clamping spiral tube 5 is pulled to the left. The clamping spiral tube 5 is extended to gather multiple groups of inner support rods 6 together, and then the cylinder is sleeved on the clamping spiral tube 5 and the inner support rod 6 to complete the loading, which is convenient for loading;

[0032] Welding clamping: Loosen the clamping spiral tube 5, and the clamping spiral tube 5 is reset under the action of the internal spiral support bar 51. The clamping spiral tube 5 is spirally attached to the inner wall of the cylinder, and the top spring 24 on the fixed guide assembly 2 pushes the guide block 23 outward. The guide block 23 drives the inner support rod 6 to support the inner side of the clamping spiral tube 5, and then the mobile frame 3 and the mobile guide assembly 4 are moved to the left end of the clamping spiral tube 5 through the transverse movement assembly, and the clamping spiral tube 5 is connected with the fixed pipe on the mobile guide assembly 4. At this time, the high-pressure water pump 8 is started, and the high-pressure water pump 8 injects high-pressure water into the clamping spiral tube 5 through the outlet pipe 9. The rigidity of the clamping spiral tube 5 is increased. Since the two ends of the clamping spiral tube 5 are restricted by the bracket and the mobile frame 3, the two ends will not stretch out due to pressure, ensuring the clamping spiral tube 5 The spiral structure is stable. At the same time, the guide block 23 is locked in the slide frame 21 by the locking assembly. The inner support rod 6 gives the clamping spiral tube 5 a vertical support force to prevent the clamping spiral tube 5 from bending vertically, ensuring the structural stability of the clamping spiral tube 5. The material of the clamping spiral tube 5 is made of PVC. When the high-pressure water flow is passed, a certain amount of deformation will be generated, so that the clamping spiral tube 5 is tightly attached to the inner wall of the cylinder, and the clamping is stable. When the internal pressure of the clamping spiral tube 5 reaches the threshold, the water flow is discharged into the cooling water tank 7 through the pressure valve 10. At this time, the inner wall of the clamping spiral tube 5 maintains a certain pressure, and the internal water flow is in a flowing state. During welding, the cooling water passes through the inner wall of the cylinder in a spiral shape, which can effectively take away the heat generated by the cylinder due to welding, and can prevent the inner wall of the cylinder from thermal deformation;

[0033] Unloading: The left end of the clamping spiral tube 5 is separated from the fixed tube on the movable guide assembly 4, and the movable frame 3 and the movable guide assembly 4 are moved to the leftmost side by the transverse movement assembly to complete the rapid unloading.

[0034] Compared with the existing clamping tools, the clamping surface of this welding clamping tool is more uniform, and the impact on the inner wall of the cylinder is smaller. The clamping is achieved by water pressure, and the pressure control is more convenient and stable. At the same time, the high-pressure water flow can also take away the heat generated during welding, which can effectively prevent the thermal deformation of the inner wall of the cylinder. The simple structural design can effectively eliminate the error of the inner wall of the cylinder caused by welding. The process accuracy of the cylinder welded by this device can meet the use requirements.

[0035] Embodiment 2, based on the above embodiment, provides a transverse movement component structure;

[0036] like Figure 3-Figure 6 As shown, the transverse movement assembly includes a slide rail 14, a slider 15, a driving motor, a movable screw 16 and a movable nut 31. The slide rail 14 is fixedly mounted on the top of the frame 1, the slider 15 is slidably connected to the slide rail 14, the movable frame 3 is fixedly mounted on the slider 15, the driving motor is fixedly mounted on the top of the frame 1, the movable screw 16 is fixedly connected to the output end of the driving motor, and the movable nut 31 is fixedly mounted on the bottom of the movable frame 3.

[0037] By controlling the driving motor to be energized, the driving motor drives the movable screw 16 to rotate, and the movable screw 16 drives the movable frame 3 to move through the movable nut 31. When the driving motor is not energized, the movable frame 3 will not move, and the two ends of the clamping spiral tube 5 can be stably restricted.

[0038] Embodiment 3, based on the above embodiment, provides a locking assembly structure;

[0039] like Figure 4 , Figure 5 As shown, the locking assembly includes a hydraulic box 25 fixedly mounted on the guide block 23. The hydraulic box 25 is connected to the fixed tube through a hydraulic tube 26. Both ends of the hydraulic box 25 are slidably connected with hydraulic clamping rods 27. A tension spring 28 is arranged between the two groups of hydraulic clamping rods 27. The inner wall of the slide frame 21 is provided with multiple groups of locking grooves 22, and the hydraulic clamping rods 27 can be inserted into the locking grooves 22.

[0040] Start the high-pressure water pump 8, and the high-pressure water pump 8 injects high-pressure water into the clamping spiral tube 5 through the water outlet pipe 9. The rigidity of the clamping spiral tube 5 is increased. Since the two ends of the clamping spiral tube 5 are restricted by the bracket and the movable frame 3, the two ends will not extend due to pressure, thereby ensuring the stability of the spiral structure of the clamping spiral tube 5. At the same time, the high-pressure water flow enters the hydraulic box 25 through the hydraulic pipe 26. Under the action of the hydraulic pressure, the hydraulic clamping rod 27 is inserted into the locking slot 22. At this time, the guide block 23 is locked in the slide frame 21, and the inner support rod 6 gives the clamping spiral tube 5 a vertical support force to prevent the clamping spiral tube 5 from vertical bending. The present embodiment can simultaneously increase the strength of the clamping spiral tube 5 and fix the guide block 23 by using the high-pressure water flow, and the structure is more compact.

[0041] Furthermore, a baffle plate 29 is fixedly mounted on the outer side of the slide frame 21 by bolts, and the design of the baffle plate 29 facilitates the disassembly and assembly of the guide block 23 .

[0042] Furthermore, a through hole is opened inside the baffle 29, and the hydraulic box 25 can pass through the through hole. Through this design, the height of the hydraulic box 25 itself has little effect on the sliding distance of the guide block 23, and the design length of the slide frame 21 is reduced.

[0043] Embodiment 4, based on the above embodiment, further includes that the cross-section of the clamping spiral tube 5 is rectangular. Through this design, the contact area between the clamping spiral tube 5 and the inner wall of the cylinder is larger, the clamping is more stable, and after the high-pressure water flow is passed through, the strength of the clamping spiral tube 5 is also greater and the shape is more stable.

[0044] Embodiment 5, based on the above embodiment, further includes that a nut joint 52 is provided at the right end of the clamping spiral tube 5, and a threaded joint is provided on the left side of the fixed tube in the fixed guide assembly 2, and the nut joint 52 can be threadedly connected to the threaded joint. Through this design, the right end of the clamping spiral tube 5 is stably connected to the fixed tube on the fixed guide assembly 2, and the sealing is better.

[0045] Furthermore, a quick-connect connector 53 is provided at the left end of the clamping spiral tube 5, and a quick-connect sleeve is provided on the right side of the fixed tube in the movable guide assembly 4. Through this design, the left end of the clamping spiral tube 5 can be quickly connected and separated from the fixed tube in the movable guide assembly 4.

[0046] Embodiment 6, based on the above embodiment, further includes that a branch pipe 12 is arranged outside the return pipe 11 , and the branch pipe 12 is connected to the cooling water tank 7 through a drain valve 13 .

[0047] When unloading, since there is high-pressure water in the clamping spiral tube 5, the left end of the clamping spiral tube 5 is separated from the fixed tube on the movable guide assembly 4, which will cause water spraying and waste of water resources. Therefore, through the arrangement of this embodiment, before falling, the drain valve 13 is opened first, and the water in the clamping spiral tube 5 can be quickly put into the cooling water tank 7, and then the left end of the clamping spiral tube 5 is separated from the fixed tube on the movable guide assembly 4, and then the movable frame 3 and the movable guide assembly 4 are moved to the far left through the transverse movement assembly to complete the rapid unloading.

[0048] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cylinder built-in welding tool, comprising a frame (1), characterized in that: The frame (1) is provided with a bracket at the top, a fixed guide assembly (2) is fixedly installed on the left side of the bracket, a transverse movement assembly is provided at the top of the frame (1), a mobile frame (3) is fixedly installed on the top of the transverse movement assembly, and a mobile guide assembly (4) is fixedly installed on the right side of the mobile frame (3). The fixed guide assembly (2) and the mobile guide assembly (4) have the same structure. The fixed guide assembly (2) comprises a fixed tube fixedly installed on the left side of the bracket, a plurality of groups of sliding frames (21) are arranged in an annular manner on the outer side of the fixed tube, a guide block (23) is slidably connected inside the sliding frame (21), a top spring (24) is arranged between the guide block (23) and the fixed tube, a locking assembly is arranged on the side of the guide block (23) away from the fixed tube, and the locking assembly can lock the guide block (23) in the sliding frame (21), and an inner support rod (6) is fixedly installed on the left side of the guide block (23) in the fixed guide assembly (2), and the inner support rod (6) passes through the guide block (23) in the mobile guide assembly (4); It also comprises a clamping spiral tube (5), the clamping spiral tube (5) being connected to the fixed tube, the interior of the clamping spiral tube (5) being provided with an inner spiral support bar (51), a cooling water tank (7) being fixedly installed on the left side of the frame (1), a high-pressure water pump (8) being fixedly installed on the left side of the cooling water tank (7), a water inlet end of the high-pressure water pump (8) being connected to the cooling water tank (7), a water outlet end of the high-pressure water pump (8) being connected to the fixed tube in the fixed guide assembly (2) via a water outlet pipe (9), a pressure valve (10) being provided on the top of the cooling water tank (7), the pressure valve (10) being connected to the fixed tube in the movable guide assembly (4) via a return pipe (11).

2. The cylinder built-in welding tool according to claim 1, characterized in that: The transverse movement assembly comprises a slide rail (14), a slider (15), a drive motor, a movable lead screw (16) and a movable nut (31); the slide rail (14) is fixedly mounted on the top of the frame (1); the slider (15) is slidably connected to the slide rail (14); the movable frame (3) is fixedly mounted on the slider (15); the drive motor is fixedly mounted on the top of the frame (1); the movable lead screw (16) is fixedly connected to the output end of the drive motor; and the movable nut (31) is fixedly mounted on the bottom of the movable frame (3).

3. The cylinder built-in welding tool according to claim 1, characterized in that: The locking assembly comprises a hydraulic box (25) fixedly mounted on the guide block (23); the hydraulic box (25) is connected to a fixed tube via a hydraulic tube (26); both ends of the hydraulic box (25) are slidably connected to hydraulic clamping rods (27); a tension spring (28) is provided between the two groups of hydraulic clamping rods (27); the inner wall of the sliding frame (21) is provided with a plurality of groups of locking clamping grooves (22); the hydraulic clamping rods (27) can be inserted into the locking clamping grooves (22).

4. The cylinder built-in welding tool according to claim 3, characterized in that: A baffle (29) is fixedly mounted on the outer side of the sliding frame (21) by means of bolts.

5. The cylinder built-in welding tool according to claim 4, characterized in that: The baffle (29) is provided with a through opening inside, and the hydraulic box (25) can pass through the through opening.

6. The cylinder built-in welding tool according to claim 1, characterized in that: The cross section of the clamping spiral tube (5) is rectangular.

7. The cylinder built-in welding tool according to claim 1, characterized in that: The right end of the clamping spiral tube (5) is provided with a nut joint (52), and the left side of the fixed tube in the fixed guide assembly (2) is provided with a threaded joint, and the nut joint (52) can be threadedly connected to the threaded joint.

8. The cylinder built-in welding tool according to claim 7, characterized in that: A quick-connect connector (53) is provided at the left end of the clamping spiral tube (5), and a quick-connect sleeve is provided at the right side of the fixed tube in the movable guide assembly (4).

9. The cylinder built-in welding tool according to claim 1, characterized in that: A branch pipe (12) is provided on the outside of the return pipe (11), and the branch pipe (12) is connected to the cooling water tank (7) through a drain valve (13).

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