A welding fixture for pipe sleeves

Abstract

The utility model relates to a kind of welding fixture of pipe sleeve, including base and the first positioning assembly being located at the top of base, first positioning assembly includes the first support block fixed on base, the baffle vertically fixed on the rear side outer wall of first support block, the first high stand fixed on base and located first support block front, the first positioning cylinder fixed on first high stand, and L type clamping block inverted fixed on the telescopic end of first positioning cylinder;First positioning assembly further includes the second support block fixed on base and located first support block left side, two vertical settings and respectively symmetrically fixed on the outer wall of second support block front and rear sides first side plate, and the first positioning pin vertically inserted in the top of second support block;The rear of second support block is further provided with second positioning assembly;The utility model improves positioning accuracy to reduce the welding defective rate;In addition, the disassembly of pipe sleeve can also be automatically completed, and then time-saving and labor-saving effect is achieved.

Description

Technical Field

[0001] This utility model relates to a welding fixture for pipe sleeves. Background Technology

[0002] In automobiles, pipe sleeves are mainly used to protect, fix, and optimize various piping systems. Specific applications include exhaust systems, air conditioning systems, fuel lines, and air lines. Most pipe sleeves are currently made of iron and require multiple iron fittings to be welded to the outside. In order to ensure that each fitting has accurate positional precision during welding, the pipe sleeve usually needs to be installed on a special fixture.

[0003] The existing pipe sleeve clamps have a limited number of positioning points and their distribution is not reasonable, making them prone to loosening during welding, which leads to low positioning accuracy and a high welding defect rate. In addition, the automation level is low, and the installation and removal of the pipe sleeves require manual operation, which is both time-consuming and labor-intensive, resulting in low welding efficiency. Further improvements are needed. Utility Model Content

[0004] In view of the current state of the prior art, the technical problem to be solved by this utility model is to provide a welding fixture for pipe sleeves that improves positioning accuracy to reduce welding defect rate and significantly improves automation so that the disassembly and assembly of pipe sleeves can be completed automatically, thereby achieving the effect of saving time and effort and improving welding efficiency.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a welding fixture for a pipe sleeve, characterized in that it includes a base and a first positioning component disposed on the top of the base. The first positioning component includes a first support block fixed on the base, a baffle vertically fixed on the outer wall of the rear side of the first support block, a first lifting frame fixed on the base and located in front of the first support block, a first positioning cylinder fixed on the first lifting frame, and an L-shaped clamping block inverted and fixed on the telescopic end of the first positioning cylinder. The telescopic end of the first positioning cylinder is arranged laterally and towards the direction of the first support block. The upper side of the baffle is higher than the top of the first support block and cooperates with the L-shaped clamping block. The first positioning component also includes a second support block fixed on the base and located to the left of the first support block, two first side plates vertically arranged and symmetrically fixed on the front and rear outer walls of the second support block, and a first positioning pin vertically inserted into the top of the second support block. The upper sides of the two first side plates are higher than the top of the second support block, and an extension plate symmetrically arranged is formed at the upper right corner of the two first side plates toward the first support block. The first positioning component also includes a first support frame fixed on the base and located in front of the second support block, a first rotary lifting cylinder fixed at an incline on the first support frame, a first pressure block fixed on the movable end of the first rotary lifting cylinder, and a first tail seat fixed at an incline on the left side of the second support block and cooperating with the first pressure block. The movable end of the first rotary lifting cylinder is inclined to the upper left.

[0006] Preferably, a second positioning component is provided behind the second support block. The second positioning component includes a third support block fixed to the top of the base, a support block fixed to the top of the third support block, a first connecting frame fixed to the outer right side wall of the third support block, a first pressing cylinder fixed to the bottom of the first connecting frame, a first pressing arm rotatably connected to the top of the first connecting frame, and a pressing beam horizontally fixed to the end of the first pressing arm and located above the support block. The telescopic end of the first pressing cylinder passes vertically upward through the first connecting frame and is rotatably connected to the middle of the first pressing arm.

[0007] Preferably, a number of limiting units are provided between both ends of the pressure beam and the support block. The limiting unit includes a second positioning pin vertically inserted into the top of the support block and a Z-shaped pressure plate horizontally fixed on the pressure beam. The end of each Z-shaped pressure plate is located directly above a corresponding second positioning pin.

[0008] Preferably, a third positioning component is provided behind the third support block. The third positioning component includes a fourth support block fixed to the top of the base, a pad fixed to the top of the fourth support block, a second side plate vertically fixed to the rear outer wall of the fourth support block, a Z-shaped stop block vertically fixed to the right outer wall of the fourth support block, and a third positioning pin vertically inserted into the top of the pad. The upper side of the second side plate is higher than the top of the pad.

[0009] Preferably, the third positioning component further includes a second tailstock that is obliquely fixed to the left outer wall of the fourth support block, a second support frame that is fixed to the top of the base and located behind the fourth support block, a second rotary lifting cylinder that is obliquely fixed to the second support frame, and a second pressure block that is fixed to the movable end of the second rotary lifting cylinder and cooperates with the top of the second tailstock. The movable end of the second rotary lifting cylinder is obliquely set to the upper left.

[0010] Preferably, the first positioning assembly further includes a second lifting frame fixed to the top of the base and located to the right of the first support block, a second positioning cylinder fixed to the second lifting frame, a locking head fixed to the telescopic end of the second positioning cylinder, a first upright fixed to the top of the base and located to the right rear of the first support block, a pin that is laterally and movably inserted into the first upright, a third positioning cylinder fixed to the rear outer wall of the first upright, and a core column concentrically fixed to the front end of the pin. The telescopic end of the second positioning cylinder is laterally arranged towards the first support block, the telescopic end of the third positioning cylinder is arranged parallel to the pin, the front end of the pin extends between the locking head and the first support block, and the end of the locking head is provided with a slot that cooperates with the core column.

[0011] Preferably, the second positioning assembly further includes a side frame fixed to the top of the base and located to the left of the third support block, a second connecting frame fixed to the left side of the side frame, a second pressing cylinder fixed to the bottom of the second connecting frame, a second pressure arm rotatably connected to the top of the second connecting frame, a swing block fixed to the end of the second pressure arm, a U-shaped seat block fixed to the right side of the side frame, and two U-shaped pressure blocks fixed to the swing block and symmetrically arranged above the U-shaped seat block. The telescopic end of the second pressing cylinder passes vertically upward through the second connecting frame and is rotatably connected to the middle of the second pressure arm.

[0012] Preferably, the third positioning component further includes a second upright fixed to the top of the base and located to the right of the fourth support block, a limiting rod inclined and movably inserted into the second upright, a pressure head concentrically fixed to the left end of the limiting rod, a locking plate inclinedly fixed to the second upright and located in front of or behind the limiting rod, and a locking bolt radially fixed to one side of the right end of the limiting rod. The upper side of the locking plate is provided with several limiting notches that cooperate with the locking bolt. The limiting rod is set with the left side lower than the right side.

[0013] Compared with the prior art, the advantages of this utility model are as follows: This utility model increases the number of positioning points and optimizes the distribution of positioning points to avoid loosening of the pipe sleeve during welding, thereby improving the positioning accuracy and reducing the welding defect rate; in addition, it significantly improves the degree of automation so that the disassembly and assembly of the pipe sleeve can be completed automatically without the need for manual operation, thereby achieving the effect of saving time and effort and improving welding efficiency. Attached Figure Description

[0014] The above and other features, advantages, and aspects of the embodiments of this application will become more apparent when taken in conjunction with the accompanying drawings and the following detailed description; throughout the drawings, the same or similar reference numerals denote the same or similar elements; it should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale; in the drawings: Figure 1 This is a structural diagram of the left front side of this utility model; Figure 2 This is a structural diagram of the right rear side of this utility model. Detailed Implementation

[0015] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0016] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0017] like Figures 1-2 As shown, a welding fixture for a pipe sleeve includes a base 1 and a first positioning assembly disposed on the top of the base 1. The first positioning assembly includes a first support block 2 fixed on the base 1, a baffle 3 vertically fixed on the rear outer wall of the first support block 2, a first lifting frame 4 fixed on the base 1 and located in front of the first support block 2, a first positioning cylinder 5 fixed on the first lifting frame 4, and an L-shaped clamping block 6 invertedly fixed on the telescopic end of the first positioning cylinder 5. The telescopic end of the first positioning cylinder 5 is horizontal and arranged towards the first support block 2. The upper side of the baffle 3 is higher than the top of the first support block 2 and cooperates with the L-shaped clamping block 6. The first positioning component also includes a second support block 7 fixed on the base 1 and located to the left of the first support block 2, two first side plates 8 vertically arranged and symmetrically fixed on the front and rear outer walls of the second support block 7, and a first positioning pin 9 vertically inserted into the top of the second support block 7. The upper sides of the two first side plates 8 are higher than the top of the second support block 7, and an extension plate 81 symmetrically arranged is formed at the upper right corner of the two first side plates 8 towards the first support block 2. The first positioning component also includes a first support frame 11 fixed on the base 1 and located in front of the second support block 7, a first rotary lifting cylinder 12 fixedly on the first support frame 11, a first pressure block 13 fixed on the movable end of the first rotary lifting cylinder 12, and a first tail seat 10 fixedly on the left side of the second support block 7 and cooperating with the first pressure block 13. The movable end of the first rotary lifting cylinder 12 is inclined to the upper left.

[0018] A second positioning assembly is also provided behind the second support block 7. The second positioning assembly includes a third support block 14 fixed to the top of the base 1, a support block 15 fixed to the top of the third support block 14, a first connecting frame 17 fixed to the outer right side wall of the third support block 14, a first pressing cylinder 18 fixed to the bottom of the first connecting frame 17, a first pressing arm 19 rotatably connected to the top of the first connecting frame 17, and a pressing beam 20 horizontally fixed to the end of the first pressing arm 19 and located above the support block 15. The telescopic end of the first pressing cylinder 18 passes vertically upward through the first connecting frame 17 and is rotatably connected to the middle of the first pressing arm 19.

[0019] Several limiting units are provided between the two ends of the pressure beam 20 and the support block 15. The limiting unit includes a second positioning pin 16 vertically inserted into the top of the support block 15 and a Z-shaped pressure plate 21 horizontally fixed on the pressure beam 20. The end of each Z-shaped pressure plate 21 is located directly above a corresponding second positioning pin 16.

[0020] A third positioning component is also provided behind the third support block 14. The third positioning component includes a fourth support block 23 fixed to the top of the base 1, a pad 24 fixed to the top of the fourth support block 23, a second side plate 25 vertically fixed to the rear outer wall of the fourth support block 23, a Z-shaped stop 26 vertically fixed to the right outer wall of the fourth support block 23, and a third positioning pin 27 vertically inserted into the top of the pad 24. The upper side of the second side plate 25 is higher than the top of the pad 24.

[0021] The third positioning component also includes a second tailstock 28 that is inclinedly fixed on the left outer wall of the fourth support block 23, a second support frame 29 that is fixed on the top of the base 1 and located behind the fourth support block 23, a second rotary lifting cylinder 30 that is inclinedly fixed on the second support frame 29, and a second pressure block 31 that is fixed on the movable end of the second rotary lifting cylinder 30 and cooperates with the top of the second tailstock 28. The movable end of the second rotary lifting cylinder 30 is inclined to the upper left.

[0022] The first positioning assembly also includes a second lifting frame 32 fixed to the top of the base 1 and located to the right of the first support block 2, a second positioning cylinder 33 fixed to the second lifting frame 32, a locking head 34 fixed to the telescopic end of the second positioning cylinder 33, a first upright frame 35 fixed to the top of the base 1 and located to the right rear of the first support block 2, a pin 36 that is laterally and movably inserted into the first upright frame 35, a third positioning cylinder 37 fixed to the rear outer wall of the first upright frame 35, and a core column 38 concentrically fixed to the front end of the pin 36. The telescopic end of the second positioning cylinder 33 is laterally arranged towards the first support block 2, and the telescopic end of the third positioning cylinder 37 is arranged parallel to the pin 36. The front end of the pin 36 extends between the locking head 34 and the first support block 2, and the end of the locking head 34 is provided with a slot 341 that cooperates with the core column 38.

[0023] The second positioning assembly also includes a side frame 49 fixed to the top of the base 1 and located to the left of the third support block 14, a second connecting frame 39 fixed to the left side of the side frame 49, a second pressing cylinder 40 fixed to the bottom of the second connecting frame 39, a second pressing arm 41 rotatably connected to the top of the second connecting frame 39, a swing block 42 fixed to the end of the second pressing arm 41, a U-shaped seat block 45 fixed to the right side of the side frame 49, and two U-shaped pressing blocks 43 fixed to the swing block 42 and symmetrically arranged above the U-shaped seat block 45. The telescopic end of the second pressing cylinder 40 passes vertically upward through the second connecting frame 39 and is rotatably connected to the middle of the second pressing arm 41.

[0024] The third positioning component also includes a second upright 44 fixed to the top of the base 1 and located to the right of the fourth support block 23, a limiting rod 45 that is inclined and movably inserted into the second upright 44, a pressure head 47 concentrically fixed to the left end of the limiting rod 45, a locking plate 46 that is inclinedly fixed on the second upright 44 and located in front of or behind the limiting rod 45, and a locking bolt 48 that is radially fixed to one side of the right end of the limiting rod 45. The upper side of the locking plate 46 is provided with several limiting notches 461 that cooperate with the locking bolt 48. The limiting rod 45 is set with the left side lower than the right side.

[0025] A horizontally arranged baffle 22 is also fixed to the top right side of the support block 15.

[0026] Working principle: Take a tube sleeve and place one end of it on top of the first support block 2 and in front of the baffle 3. Then place the root of one end of the tube sleeve on top of the second support block 7 and between the two first side plates 8. At the same time, insert the end of the first positioning pin 9 into the recess located below the root of one end of the tube sleeve. Then place the bent section located at the root of one end of the tube sleeve obliquely on top of the first tailstock 10.

[0027] Next, place the other end of the sleeve on top of the support block 15 and against the left side of the stop strip 22. Then, insert the end of the second positioning pin 16 in each limiting unit into the corresponding recess below the other end of the sleeve. At the same time, place the other end of the sleeve on top of the fourth support block 23 and in front of the second side plate 25. Place the bent section at the other end of the sleeve diagonally on top of the second tail seat 28. Finally, fit the opening of the other end of the sleeve against the upper left side of the Z-shaped stop block 26. At this time, the branch pipe outside the sleeve is just inserted into the U-shaped seat block 45.

[0028] Next, the telescopic end of the first positioning cylinder 5 is driven to extend outward to drive the L-shaped clamping block 6 to move backward until the L-shaped clamping block 6 cooperates with the first support block 2 and the baffle 3 to clamp one end of the sleeve; at the same time, the movable end of the first rotary lifting cylinder 12 is driven to rotate and then descend to press the bent section at the root of the sleeve with the help of the first pressure block 13.

[0029] Then, the telescopic end of the first pressing cylinder 18 is driven to retract inward, causing the end of the first pressing arm 19 to swing downward. This, in turn, is driven by the pressing beam 20 to swing the Z-shaped pressing plate 21 in each limiting unit downward, so that the end of each Z-shaped pressing plate 21 is pressed against the root of the other end of the tube sleeve. At the same time, the telescopic end of the second pressing cylinder 40 is also driven to retract inward, causing the end of the second pressing arm 41 to swing downward. This, in turn, is driven by the swing block 42 to swing the two U-shaped pressing blocks 43 downward, so that the branch pipe is gripped tightly with the cooperation of the U-shaped seat block 45.

[0030] Then, the movable end of the second rotary lifting cylinder 30 is driven to rotate and then descend to drive the second pressure block 31 to move down, thereby pressing the other end of the tube sleeve with the second tailstock 28 to bend the other end.

[0031] At this time, the opening at one end of the tube extends to the outside of the right side of the first support block 2, driving the telescopic end of the second positioning cylinder 33 to extend outward to drive the clamp 34 to move toward the tube until the clamp 34 is inserted into the opening at one end of the tube. Then, the telescopic end of the third positioning cylinder 37 is driven to extend outward to drive the core 38 forward with the help of the pin 36, so that the end of the core 38 passes through the through hole located at the opening at one end of the tube and also passes through the slot 341.

[0032] Next, hold the locking bolt 48 by hand and move the limiting rod 45 to the left until the pressure head 47 is inserted into the cavity above the opening at the other end of the sleeve. Then, swing the locking bolt 48 toward the locking plate 46 to rotate the limiting rod 45 until the locking bolt 48 is engaged in the nearest limiting notch 461. This completes the positioning of the sleeve, and then the sleeve can be welded with welding tools.

[0033] This invention increases the number of positioning points and optimizes their distribution to prevent the sleeve from loosening during welding, thereby improving positioning accuracy and reducing welding defect rate. In addition, it significantly improves the degree of automation so that the assembly and disassembly of the sleeve can be completed automatically without manual operation, thus saving time and effort and improving welding efficiency.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A welding fixture for pipe sleeves, characterized in that, The device includes a base and a first positioning component located on top of the base. The first positioning component includes a first support block fixed to the base, a baffle vertically fixed to the outer rear wall of the first support block, a first lifting frame fixed to the base and located in front of the first support block, a first positioning cylinder fixed to the first lifting frame, and an L-shaped clamping block inverted and fixed to the telescopic end of the first positioning cylinder. The telescopic end of the first positioning cylinder is horizontal and oriented towards the first support block. The upper side of the baffle is higher than the top of the first support block and cooperates with the L-shaped clamping block. The first positioning component also includes a second support block fixed on the base and located to the left of the first support block, two first side plates vertically arranged and symmetrically fixed on the front and rear outer walls of the second support block, and a first positioning pin vertically inserted into the top of the second support block. The upper sides of the two first side plates are higher than the top of the second support block, and an extension plate symmetrically arranged is formed at the upper right corner of the two first side plates toward the first support block. The first positioning component also includes a first support frame fixed on the base and located in front of the second support block, a first rotary lifting cylinder fixed at an incline on the first support frame, a first pressure block fixed on the movable end of the first rotary lifting cylinder, and a first tail seat fixed at an incline on the left side of the second support block and cooperating with the first pressure block. The movable end of the first rotary lifting cylinder is inclined to the upper left.

2. The welding fixture for a pipe sleeve according to claim 1, characterized in that, A second positioning component is also provided behind the second support block. The second positioning component includes a third support block fixed to the top of the base, a support block fixed to the top of the third support block, a first connecting frame fixed to the outer right side wall of the third support block, a first pressing cylinder fixed to the bottom of the first connecting frame, a first pressing arm rotatably connected to the top of the first connecting frame, and a pressing beam horizontally fixed to the end of the first pressing arm and located above the support block. The telescopic end of the first pressing cylinder passes vertically upward through the first connecting frame and is rotatably connected to the middle of the first pressing arm.

3. The welding fixture for a pipe sleeve according to claim 2, characterized in that, Several limiting units are provided between both ends of the pressure beam and the support block. Each limiting unit includes a second positioning pin vertically inserted into the top of the support block and a Z-shaped pressure plate horizontally fixed on the pressure beam. The end of each Z-shaped pressure plate is located directly above a corresponding second positioning pin.

4. The welding fixture for a pipe sleeve according to claim 2, characterized in that, A third positioning component is also provided behind the third support block. The third positioning component includes a fourth support block fixed to the top of the base, a pad fixed to the top of the fourth support block, a second side plate vertically fixed to the rear outer wall of the fourth support block, a Z-shaped stop block vertically fixed to the right outer wall of the fourth support block, and a third positioning pin vertically inserted into the top of the pad. The upper side of the second side plate is higher than the top of the pad.

5. The welding fixture for a pipe sleeve according to claim 4, characterized in that, The third positioning component also includes a second tailstock that is inclinedly fixed on the left outer wall of the fourth support block, a second support frame that is fixed on the top of the base and located behind the fourth support block, a second rotary lifting cylinder that is inclinedly fixed on the second support frame, and a second pressure block that is fixed on the movable end of the second rotary lifting cylinder and cooperates with the top of the second tailstock. The movable end of the second rotary lifting cylinder is inclined to the upper left.

6. The welding fixture for a pipe sleeve according to claim 1, characterized in that, The first positioning assembly further includes a second lifting frame fixed to the top of the base and located to the right of the first support block, a second positioning cylinder fixed to the second lifting frame, a clamp fixed to the telescopic end of the second positioning cylinder, a first upright fixed to the top of the base and located to the right rear of the first support block, a pin that is laterally and movably inserted into the first upright, a third positioning cylinder fixed to the rear outer wall of the first upright, and a core column concentrically fixed to the front end of the pin. The telescopic end of the second positioning cylinder is laterally positioned towards the first support block, the telescopic end of the third positioning cylinder is parallel to the pin, the front end of the pin extends between the clamp and the first support block, and the end of the clamp has a groove that cooperates with the core column.

7. The welding fixture for a pipe sleeve according to claim 2, characterized in that, The second positioning assembly also includes a side frame fixed to the top of the base and located to the left of the third support block, a second connecting frame fixed to the left side of the side frame, a second pressing cylinder fixed to the bottom of the second connecting frame, a second pressure arm rotatably connected to the top of the second connecting frame, a swing block fixed to the end of the second pressure arm, a U-shaped seat block fixed to the right side of the side frame, and two U-shaped pressure blocks fixed to the swing block and symmetrically arranged above the U-shaped seat block. The telescopic end of the second pressing cylinder passes vertically upward through the second connecting frame and is rotatably connected to the middle of the second pressure arm.

8. The welding fixture for a pipe sleeve according to claim 5, characterized in that, The third positioning component also includes a second upright fixed to the top of the base and located to the right of the fourth support block, a limiting rod that is inclined and movably inserted into the second upright, a pressure head concentrically fixed to the left end of the limiting rod, a locking plate that is inclinedly fixed on the second upright and located in front of or behind the limiting rod, and a locking bolt that is radially fixed to one side of the right end of the limiting rod. The upper side of the locking plate has several limiting notches that cooperate with the locking bolt. The limiting rod is set with the left side lower than the right side.

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