Hand-held lap weld gas clamp

Abstract

The utility model discloses a handheld lap welding gas retaining clamp, including support, first crimping knife subassembly, second crimping knife subassembly and two advance and retreat subassembly, two advance and retreat subassembly respectively with both sides symmetry swing joint of support, first crimping knife subassembly and second crimping knife subassembly are installed on two advance and retreat subassembly respectively, first crimping knife subassembly includes first crimping knife, and second crimping knife subassembly includes second crimping knife, and first crimping knife and second crimping knife are opposite, and the side of first crimping knife towards second crimping knife is first crimping knife blade, and the side of second crimping knife towards first crimping knife is second crimping knife blade, and first crimping knife blade and second crimping knife blade are all strip plane shape, and first crimping knife and second crimping knife are all wedge shape, and first crimping knife and second crimping knife are centrally symmetric setting. The clamp simple structure, convenient operation, save time and labour, have reduced the rejection rate, have improved work efficiency, have reduced production cost.

Description

Technical Field

[0001] This utility model relates to the field of aluminum-plastic PE-RT composite pipe production and processing technology, specifically to a handheld lap welding air-blocking clamp. Background Technology

[0002] In the production of aluminum-plastic PE-RT composite pipes, inflating the inside of the pipe is a common process. The main purpose of inflation is to maintain the shape and stability of the inner tube and ensure a secure bond between it and the intermediate aluminum tube layer. However, this process also brings some problems that urgently need to be addressed.

[0003] Currently, in the production of aluminum-plastic PE-RT composite pipes, it is necessary to seal the pipe ends to ensure stable internal air pressure. When the pipe reaches a certain length, such as 100 meters, the traditional process involves manually bending the pipe to seal it. Workers need to bend the pipe into a "Z" shape before cutting it. This method... Not only is the operation complex and inefficient, but it also requires extremely high physical strength from workers and results in a significant waste of pipe materials. It is estimated that each operation will result in the waste of approximately 1 meter of pipe material, increasing production costs. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a handheld lap welding air-blocking clamp. This clamp has a simple structure, is easy to operate, saves time and effort, reduces scrap rate, improves work efficiency, and lowers production costs.

[0005] The technical solution adopted to achieve the above-mentioned objectives of this utility model is as follows: A handheld lap welding gas-blocking clamp includes a bracket, a first crushing knife assembly, a second crushing knife assembly, and two advance / retracting assemblies. The two advance / retracting assemblies are symmetrically mounted on both sides of the bracket and are movably connected to the bracket. The first and second crushing knife assemblies are respectively mounted on the two advance / retracting assemblies. The first crushing knife assembly includes a first crushing knife, and the second crushing knife assembly includes a second crushing knife. The first and second crushing knives are directly opposite each other. The side of the first crushing knife facing the second crushing knife is the first crushing knife blade, and the side of the second crushing knife facing the first crushing knife is the second crushing knife blade. Both the first and second crushing knife blades are strip-shaped and wedge-shaped. The distance from the first crushing knife blade to the back of the first crushing knife is infinitely variable, and the distance from the second crushing knife blade to the back of the second crushing knife is infinitely variable. The first and second crushing knives are centrally symmetrically arranged.

[0006] The advancing and retreating assembly includes two screws, which are threadedly connected to the bracket. The first and second crushing knives are respectively mounted on the mutually facing ends of the two screws via bearings.

[0007] The first crushing knife assembly further includes a first knife holder, and the second crushing knife assembly further includes a second knife holder. Both the first and second knife holders are stacked. The opening of the first knife holder faces the back of the first crushing knife, and the back of the first crushing knife is fixed to both sides of the first knife holder. The opening of the second knife holder faces the back of the second crushing knife, and the back of the second crushing knife is fixed to both sides of the second knife holder. The middle parts of the first and second knife holders are respectively mounted on the mutually facing ends of the two screws through bearings, and retaining springs are respectively installed between the two bearings and the first and second knife holders.

[0008] The forward and backward assembly also includes handwheels, with two handwheels respectively mounted on the opposite ends of the two screws.

[0009] It also includes two guide posts, which are symmetrically arranged and located on both sides of the first knife holder. The two ends of each guide post are fixed to the bracket. Each guide post passes through the first and second crushing knives and is slidably connected to the first and second crushing knives.

[0010] The bracket includes two first support plates and two second support plates. The two first support plates are parallel to each other, and the two second support plates are also parallel to each other. The two second support plates are located between the two first support plates. The ends of the two second support plates on the same side are fixedly connected to the two ends of one of the first support plates, and the ends of the two second support plates on the same other side are fixedly connected to the two ends of the other first support plate. The two first support plates are perpendicular to the two second support plates, so that the bracket forms a U-shaped structure. The first and second crushing knife assemblies are located within the space of the bracket, and the two advance and retreat assemblies are movably connected to the middle part of the two first support plates.

[0011] The two second support plates are each provided with two guide rails, which are perpendicular to the two first support plates. The length direction of the first crushing knife is parallel to the first support plate. The two sides of the first crushing knife are each provided with a first slider, which is slidably connected to the two guide rails. The two sides of the second crushing knife are each provided with a second slider, which is slidably connected to the two guide rails.

[0012] Compared with the prior art, the beneficial effects and advantages of this utility model are as follows: This clamp uses a handwheel to push two collapsing knives to crush the aluminum-plastic PE-RT composite pipe, causing it to deflate without affecting the internal air pressure of the pipe, thus stabilizing production. It can also efficiently crush the pipe, saving time and labor, greatly reducing labor intensity and improving production efficiency. It can also reduce the length of waste pipe. According to practical production, each crushing operation only produces 10cm of waste pipe, greatly reducing the scrap rate and lowering production costs. Attached Figure Description

[0013] Figure 1This is a schematic diagram of a handheld lap welding gas-blocking clamp.

[0014] Figure 2 for Figure 1 The main view.

[0015] Figure 3 This is a schematic diagram of the internal structure of a handheld lap welding gas-blocking clamp. Figure 4 This is a schematic diagram of the use of a handheld lap welding air-blocking clamp.

[0016] Among them, 1-first support plate; 2-second support plate; 3-screw; 4-handwheel; 5-first crushing knife: 501-first crushing blade, 502-first crushing knife back; 6-first knife holder; 7-second crushing knife: 701-second crushing blade, 702-second crushing knife back; 8-second knife holder; 9-guide post; 10-guide rail; 11-first slider; 12-bearing; 13-circlip; 14-second slider; 15-aluminum-plastic PE-RT composite pipe; 16-traction machine; 17-coiler. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings.

[0018] The structure of the handheld lap welding air-blocking fixture provided in this embodiment is as follows: Figure 1-3 As shown, it includes a bracket, a first crushing knife assembly, a second crushing knife assembly, two advance and retreat assemblies, and two guide posts 9.

[0019] The support structure is symmetrical, comprising two first support plates 1 and two second support plates 2, both of which are strip-shaped. The two first support plates 1 are parallel to each other, and the two second support plates 2 are also parallel to each other. The two second support plates 2 are located between the two first support plates 1. The ends of the two second support plates 2 on the same side are fixedly connected to the two ends of one of the first support plates 1, and the ends of the two second support plates 2 on the same other side are fixedly connected to the two ends of the other first support plate 1. The two first support plates 1 are perpendicular to the two second support plates 2, thus forming a U-shaped structure.

[0020] The two forward and backward components are symmetrically arranged, and each component includes a screw 3 and a handwheel 4. The two screws 3 pass through the center of the two first support plates 1 respectively, and the two screws 3 are threadedly connected to the two first support plates 1 respectively. The two handwheels 4 are respectively installed on the opposite ends of the two screws 3.

[0021] The first and second crushing knife assemblies are located within the space of the support, facing each other. The first crushing knife assembly includes a first crushing knife 5 and a first knife holder 6, the first knife holder 6 being shaped like a stacked opening. The second crushing knife assembly includes a second crushing knife 7 and a second knife holder 8, the second knife holder 8 being shaped like a stacked opening. Both the first crushing knife 5 and the second crushing knife 7 are wedge-shaped. The distance from the first crushing knife edge 501 to the first crushing knife back 502 is infinitely variable, as is the distance from the second crushing knife edge 701 to the second crushing knife back 702.

[0022] The first crushing knife 5 and the second crushing knife 7 face each other, and their length directions are both parallel to the length direction of the first support plate 1. The side of the first crushing knife 5 facing the second crushing knife 7 is the first crushing blade 501, and the side of the first crushing knife 5 facing away from the second crushing knife 7 is the first crushing knife back 502. The side of the second crushing knife 7 facing the first crushing knife 5 is the second crushing blade 701, and the side of the second crushing knife 7 facing away from the first crushing knife 5 is the second crushing knife back 702. Both the first crushing blade 501 and the second crushing blade 701 are strip-shaped planes, and the first crushing knife 501 and the second crushing knife 701 are centrally symmetrically arranged.

[0023] The first cutter holder 6 is located between one of the first support plates 1 and the first crushing knife 5, with the opening of the first cutter holder 6 facing the back of the first crushing knife 502. The back of the first crushing knife 502 is fixed to both sides of the first cutter holder 6 by bolts. The second cutter holder 8 is located between the other first support plate 1 and the second crushing knife 7, with the opening of the second cutter holder 8 facing the back of the second crushing knife 702. The back of the second crushing knife 702 is fixed to both sides of the second cutter holder 8 by bolts.

[0024] The first tool holder 6 and the second tool holder 8 are respectively mounted on the opposite ends of the two screws 3 via bearings 12 at their center. Snap rings 13 are installed between the two bearings 12 and the first tool holder 6 and the second tool holder 8, respectively, to position the bearings 12 axially.

[0025] Two guide posts 9 are symmetrically arranged, located on both sides of the first cutter holder 6, with each end of the guide post 9 fixedly connected to the two first support plates 1. One guide post 9 passes through the same side of the length direction of the first crushing knife 5 and the second crushing knife 7, while the other guide post 9 passes through the other side of the length direction of the first crushing knife 5 and the second crushing knife 7, and each guide post 9 is slidably connected to the first crushing knife 5 and the second crushing knife 7.

[0026] Two guide rails 10 are respectively provided on the two second support plates 2, and the two guide rails 10 are perpendicular to the two first support plates 1. The two sides of the first crushing knife 5 are respectively provided with first sliders 11, and the two first sliders 11 are slidably connected to the two guide rails 10. The two sides of the second crushing knife 7 are respectively provided with second sliders 14, and the two second sliders 14 are slidably connected to the two guide rails 10.

[0027] like Figure 4 As shown, the aluminum-plastic PE-RT composite pipe 15 passes through the space between the first and second crushing blades 5 and 7 of the clamp after passing through the traction machine, and then enters the coiling machine. The clamp is hung on the outer shell of the traction machine (without affecting the normal passage of the pipe and without causing scratches). When a coil of meters is reached, the worker holds the clamp and moves it to the designated length. By rotating the two handwheels 4, the handwheels drive the screw 3 to rotate, thereby pushing the first and second crushing blades 5 and 7 closer to each other. When the first and second crushing blades 5 and 7 contact the pipe, the handwheels 4 are rotated to crush the pipe. When the pipe is completely crushed, the two handwheels 4 are rotated in the opposite direction to reset it.

Claims

1. A handheld lap welding gas-blocking clamp, characterized in that: The device includes a support frame, a first crushing knife assembly, a second crushing knife assembly, and two advance / retracting assemblies. The two advance / retracting assemblies are symmetrically mounted on both sides of the support frame and are movably connected to the support frame. The first and second crushing knife assemblies are respectively mounted on the two advance / retracting assemblies. The first crushing knife assembly includes a first crushing knife, and the second crushing knife assembly includes a second crushing knife. The first and second crushing knives are directly opposite each other. The side of the first crushing knife facing the second crushing knife is the first crushing blade, and the side of the second crushing knife facing the first crushing knife is the second crushing blade. Both the first and second crushing blades are strip-shaped and wedge-shaped. The distance from the first crushing blade to the back of the first crushing knife is infinitely variable, and the distance from the second crushing blade to the back of the second crushing knife is infinitely variable. The first and second crushing knives are centrally symmetrically arranged.

2. The handheld lap welding gas-blocking clamp according to claim 1, characterized in that: The advancing and retreating assembly includes two screws, which are threadedly connected to the bracket. The first and second crushing knives are respectively mounted on the mutually facing ends of the two screws via bearings.

3. The handheld lap welding gas-blocking clamp according to claim 2, characterized in that: The first crushing knife assembly further includes a first knife holder, and the second crushing knife assembly further includes a second knife holder. Both the first and second knife holders are stacked. The opening of the first knife holder faces the back of the first crushing knife, and the back of the first crushing knife is fixed to both sides of the first knife holder. The opening of the second knife holder faces the back of the second crushing knife, and the back of the second crushing knife is fixed to both sides of the second knife holder. The middle parts of the first and second knife holders are respectively mounted on the mutually facing ends of the two screws through bearings, and retaining springs are respectively installed between the two bearings and the first and second knife holders.

4. The handheld lap welding gas-blocking clamp according to claim 2, characterized in that: The forward and backward assembly also includes handwheels, with two handwheels respectively mounted on the opposite ends of the two screws.

5. The handheld lap welding gas-blocking clamp according to claim 1, characterized in that: It also includes two guide posts, which are symmetrically arranged and located on both sides of the first knife holder. The two ends of each guide post are fixed to the bracket. Each guide post passes through the first and second crushing knives and is slidably connected to the first and second crushing knives.

6. The handheld lap welding air-blocking clamp according to claim 1, characterized in that: The bracket includes two first support plates and two second support plates. The two first support plates are parallel to each other, and the two second support plates are also parallel to each other. The two second support plates are located between the two first support plates. The ends of the two second support plates on the same side are fixedly connected to the two ends of one of the first support plates, and the ends of the two second support plates on the same other side are fixedly connected to the two ends of the other first support plate. The two first support plates are perpendicular to the two second support plates, so that the bracket forms a U-shaped structure. The first and second crushing knife assemblies are located within the space of the bracket, and the two advance and retreat assemblies are movably connected to the middle part of the two first support plates.

7. The handheld lap welding gas-blocking clamp according to claim 6, characterized in that: The two second support plates are each provided with two guide rails, which are perpendicular to the two first support plates. The length direction of the first crushing knife is parallel to the first support plate. The two sides of the first crushing knife are each provided with a first slider, which is slidably connected to the two guide rails. The two sides of the second crushing knife are each provided with a second slider, which is slidably connected to the two guide rails.

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