Welding clamp for plastic bent pipe and straight pipe

Abstract

The utility model discloses a welding clamp for a plastic bent pipe and a straight pipe. A first straight pipe supporting assembly comprises a first support and a first pressing assembly, wherein the first support is used for supporting the middle of a first straight pipe, and the first pressing assembly is located on one side of the first support. The bent pipe supporting assembly comprises a second support for supporting the middle of the bent pipe and a second pressing assembly, and the second pressing assembly is located on one side of the second support. The second straight pipe supporting assembly comprises a third support and a third pressing assembly, wherein the third support is used for supporting the end of a second straight pipe, and the third pressing assembly is located on one side of the third support. The first straight pipe is positioned on the first support through the first pressing assembly, the supporting bent pipe is positioned on the second support through the second pressing assembly, after the second straight pipe is positioned on the third support through the third pressing assembly, one end of the supporting bent pipe is in butt joint with the first straight pipe, and the other end of the supporting bent pipe is in butt joint with the second straight pipe. And the other end of the supporting bent pipe is matched with a connecting hole formed in the peripheral surface of the second straight pipe. According to the utility model, the bending pipe and the straight pipe can be uniformly stressed.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic products, in particular to a welding fixture for a plastic bent pipe and a straight pipe. Background Art

[0002] Plastic pipes are widely used in industrial and agricultural production and life, and the most common connection method between pipes is hot-melt butt welding. For two straight pipes butted in the axial direction, the welding of the two straight pipes can be done by local heating with a heater and then butting. However, for a pipe with a mounting hole on the circumference of one pipe and the other pipe matched with the mounting hole before welding, this method of butting the two pipes by local heating has limited bonding strength between the two pipes, and cracks are easily generated during later use. Therefore, this kind of curved pipe and straight pipe are usually welded by ultrasonic method after being matched in an axially intersecting manner. However, during the ultrasonic welding operation of the pipe joint, if the support structure of the pipe is not designed reasonably, it will cause uneven force on the pipe, and the welding will still be loose. When the pressure in the pipe is too high, it is very easy to leak and seep. Utility Model Content

[0003] The utility model provides a welding clamp for a plastic bent pipe and a straight pipe. The utility model can make the bent pipe and the straight pipe receive stress uniformly.

[0004] The technical solutions to the above problems are as follows:

[0005] A welding fixture for a plastic bent tube and a straight tube comprises a first straight tube support assembly, a bent tube support assembly, and a second straight tube support assembly, wherein the first straight tube support assembly comprises a first support seat supporting the middle of the first straight tube and a first clamping assembly, wherein the first clamping assembly is located on one side of the first support seat;

[0006] The bending tube support assembly includes a second support seat supporting the middle part of the bending tube and a second clamping assembly, wherein the second clamping assembly is located on one side of the second support seat;

[0007] The second straight pipe supporting assembly includes a third support supporting the end of the second straight pipe and a third clamping assembly, wherein the third clamping assembly is located on one side of the third support;

[0008] The first straight tube is positioned on the first support by the first clamping assembly, the supporting bent tube is positioned on the second support by the second clamping assembly, and after the second straight tube is positioned on the third support by the third clamping assembly, one end of the supporting bent tube is connected to the first straight tube, and the other end of the supporting bent tube cooperates with the connecting hole set on the circumferential surface of the second straight tube.

[0009] Furthermore, a first groove for cooperating with the first straight tube is provided on the first support, and the cross section of the first groove is V-shaped.

[0010] Furthermore, the second support includes a first support seat and a second support seat. The first support seat is provided with a second groove that cooperates with the bending tube. The second groove is arranged along an arc path. The second support seat is located on one side of the first support seat. The second support seat is provided with a third groove. The cross-section of the third groove is arc-shaped.

[0011] Furthermore, the third support is provided with a fourth groove for cooperating with the end of the second straight pipe, and the cross section of the fourth groove is V-shaped.

[0012] Further, the first clamping assembly, the second clamping assembly, and the third clamping assembly each include:

[0013] A fixing seat, wherein a groove is provided on the fixing seat;

[0014] A driving arm, the driving arm is hinged to a fixing seat;

[0015] A handle, the handle is hinged to the driving arm;

[0016] A connecting rod, one end of which is hinged to the fixing seat, and the other end of which is hinged to the handle;

[0017] A pressure head is connected to the driving arm.

[0018] Furthermore, it also includes a bent tube end support assembly for supporting one end of the bent tube, the bent tube end support assembly includes a support plate, a fourth support, and a fourth clamping assembly, one end of the support plate is provided with a through hole for cooperating with one end of the bent tube, the other end of the support plate is hinged to the fourth support, the fourth clamping assembly is located on one side of the fourth support, and the fourth clamping assembly presses the support plate onto the fourth support after cooperating with the support plate.

[0019] When the utility model is used, the first straight tube is matched with the first groove, the bent tube is matched with the second groove and the third groove, the second straight tube is matched with the fourth groove, one end of the bent tube is plugged with the first straight tube, and the other end of the bent tube is plugged with the connection hole set on the circumference of the second straight tube. After that, the first straight tube is positioned on the first support by the first clamping assembly, the supported bent tube is positioned on the second support by the second clamping assembly, and after the second straight tube is positioned on the third support by the third clamping assembly, one end of the supported bent tube is connected with the first straight tube, and the other end of the supported bent tube is matched with the connection hole set on the circumference of the second straight tube. The utility model can well support the first straight tube, the bent tube and the second straight tube through the above structure, so that the first straight tube, the bent tube and the second straight tube are evenly stressed, so that the welding parts are firmly welded during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a three-dimensional diagram of the welding fixture for the plastic bent tube and the straight tube.

[0021] Figure 2For Figure 1 A schematic diagram with some parts hidden on the basis of the model.

[0022] Figure 3 A schematic diagram of a first clamping assembly.

[0023] Figure 4 For Figure 3 A schematic diagram with some parts hidden on the basis of the model.

[0024] Markings in the accompanying drawings:

[0025] The first straight tube is A, the bent tube is B, and the second straight tube is C.

[0026] The first support 1, the first groove 1a, the first clamping assembly 2, the second support 3, the first supporting seat 3a, the second supporting seat 3b, the second groove 3c, the third groove 3d, the second clamping assembly 4, the third support 5, the third clamping assembly 6, the support plate 7, the through hole 7a, the fourth support 8, the fourth clamping assembly 9, the base plate 10, the fixed seat 11, the groove 12, the driving arm 13, the handle 14, the connecting rod 15, and the pressing head 16. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] like Figures 1 to 3 The welding fixture of the plastic bent tube and straight tube of the utility model comprises a first straight tube support assembly, a bent tube support assembly, a second straight tube support assembly, and a bottom plate 10. The first straight tube support assembly comprises a first support 1 supporting the middle part of the first straight tube A and a first clamping assembly 2, and the first clamping assembly 2 is located on one side of the first support 1. One end of the first support 1 is fixed to the bottom plate 10, and the first support 1 is a rectangular parallelepiped. The first support 1 is provided with a first groove 1a for matching with the first straight tube A, and the first groove 1a is located at the other end of the first support 1, and the cross section of the first groove 1a is V-shaped.

[0029] The bent tube support assembly includes a second support 3 for supporting the middle portion of the bent tube B and a second clamping assembly 4 , wherein the second clamping assembly 4 is located on one side of the second support 3 .

[0030] The second support 3 includes a first support seat 3a and a second support seat 3b. The first support seat 3a is provided with a second groove 3c that matches the bent tube B. The second groove 3c is arranged along an arc path. The second support seat 3b is located on one side of the first support seat 3a. The second support seat 3b is provided with a third groove 3d. The cross section of the third groove 3d is arc-shaped. One end of the first support seat 3a and the second support seat 3b is fixed to the bottom plate 10. The second groove 3c is arranged at the other end of the first support seat 3a, and the third groove 3d is arranged at the other end of the second support seat 3b. The second groove 3c is an arc groove, and the third groove 3d is an arc groove.

[0031] The second straight tube support assembly includes a third support 5 supporting the end C of the second straight tube and a third clamping assembly 6, and the third clamping assembly 6 is located on one side of the third support 5. One end of the third support 5 is fixed to the bottom plate 10, and the third support 5 is provided with a fourth groove 5a for matching with the end C of the second straight tube, and the cross section of the fourth groove 5a is V-shaped. The fourth groove 5a is located at the other end of the third support 5.

[0032] In this embodiment, there are two third supports 5 , each of which supports the end of the second straight tube C. Each end of the second straight tube C is also configured with a third clamping assembly 6 , so that both ends of the second straight tube C are positioned on the third support 5 .

[0033] Match the first straight tube A with the first groove 1a, match the bent tube B with the second groove 3c and the third groove 3d, match the second straight tube C with the fourth groove 5a, plug one end of the bent tube B with the first straight tube A, and plug the other end of the bent tube B with the connecting hole set on the circumferential surface of the second straight tube C. After that, the first straight tube A is positioned on the first support 1 by the first clamping component 2, the supported bent tube B is positioned on the second support 3 by the second clamping component 4, and the second straight tube C is positioned on the third support 5 by the third clamping component 6. Then, one end of the supported bent tube B is connected to the first straight tube A, and the other end of the supported bent tube B is matched with the connecting hole set on the circumferential surface of the second straight tube C.

[0034] It also includes a bent tube end support assembly for supporting one end of the bent tube B, the bent tube end support assembly includes a support plate 7, a fourth support 8, and a fourth clamping assembly 9. One end of the support plate 7 is provided with a through hole 7a for cooperating with the end of the bent tube B, the other end of the support plate 7 is hinged to the fourth support 8, the fourth clamping assembly 9 is located on one side of the fourth support 8, and the fourth clamping assembly 9 presses the support plate 7 onto the fourth support 8 after cooperating with the support plate 7.

[0035] The first clamping assembly 2, the second clamping assembly 4, the third clamping assembly 6, and the bending tube end support assembly all include a fixed seat 11, a driving arm 13, a handle 14, a connecting rod 15, and a pressing head 16. The fixed seat 11 is provided with a groove 12, the driving arm 13 is hinged to the fixed seat 11, the handle 14 is hinged to the driving arm 13, one end of the connecting rod 15 is hinged to the fixed seat 11, the other end of the connecting rod 15 is hinged to the handle 14, and the pressing head 16 is connected to the driving arm 13.

[0036] By applying power to the handle 14, since the handle 14 is hinged to the fixed seat 11 through the connecting rod 15, the driving arm 13 is hinged to the fixed seat 11, and the handle 14 is hinged to the driving arm 13, the handle 14 rotates, and the handle 14 drives the driving arm 13 to rotate, thereby driving the pressure head 16 to move, thereby applying pressure to the bent tube and the straight tube, or moving the pressure head 16 away from the bent tube and the straight tube.

[0037] Finally, it should be noted that the above embodiments are merely preferred embodiments of the present invention and are used to illustrate the technical solution of the present invention, rather than limiting it, let alone limiting the protection scope of the present invention. Although the utility model has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features therein may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solution from the protection scope of the claims.

Claims

1. A welding fixture for a plastic bent tube and a straight tube, comprising a first straight tube support assembly, a bent tube support assembly, and a second straight tube support assembly, characterized in that: The first straight tube support assembly comprises a first support (1) supporting the middle part of the first straight tube (A) and a first clamping assembly (2), wherein the first clamping assembly (2) is located on one side of the first support (1); The bending tube support assembly comprises a second support (3) supporting the middle part of the bending tube (B) and a second clamping assembly (4), wherein the second clamping assembly (4) is located on one side of the second support (3); The second straight pipe supporting assembly comprises a third support (5) supporting the end of the second straight pipe (C) and a third clamping assembly (6), wherein the third clamping assembly (6) is located on one side of the third support (5); The first straight tube (A) is positioned on the first support (1) by the first clamping assembly (2), the supporting bent tube (B) is positioned on the second support (3) by the second clamping assembly (4), and after the second straight tube (C) is positioned on the third support (5) by the third clamping assembly (6), one end of the supporting bent tube (B) is connected to the first straight tube (A), and the other end of the supporting bent tube (B) is matched with a connecting hole provided on the circumferential surface of the second straight tube (C).

2. The welding fixture for plastic bent tube and straight tube according to claim 1 is characterized in that: The first support (1) is provided with a first groove (1a) for matching with the first straight tube (A), and the cross section of the first groove (1a) is V-shaped.

3. The welding fixture for plastic bent tube and straight tube according to claim 1, characterized in that: The second support (3) comprises a first support seat (3a) and a second support seat (3b); the first support seat (3a) is provided with a second groove (3c) matched with the bending tube (B); the second groove (3c) is arranged along an arc-shaped path; the second support seat (3b) is located on one side of the first support seat (3a); the second support seat (3b) is provided with a third groove (3d); and the cross section of the third groove (3d) is arc-shaped.

4. The welding fixture for plastic bent tube and straight tube according to claim 1, characterized in that: The third support (5) is provided with a fourth groove (5a) for matching with the end of the second straight tube (C); the cross section of the fourth groove (5a) is V-shaped.

5. The welding fixture for plastic bent tube and straight tube according to claim 1, characterized in that: The first pressing assembly (2), the second pressing assembly (4), and the third pressing assembly (6) all include: A fixing seat (11), wherein a groove (12) is provided on the fixing seat (11); A driving arm (13), the driving arm (13) is hinged to the fixing seat (11); A handle (14), the handle (14) being hinged to the driving arm (13); A connecting rod (15), one end of the connecting rod (15) is hinged to the fixing seat (11), and the other end of the connecting rod (15) is hinged to the handle (14); A pressure head (16), the pressure head (16) is connected to the driving arm (13).

6. The welding fixture for plastic bent tube and straight tube according to any one of claims 1 to 5, characterized in that: It also includes a bent tube end support assembly for supporting one end of the bent tube (B), the bent tube end support assembly including a support plate (7), a fourth support (8), and a fourth clamping assembly (9), one end of the support plate (7) is provided with a through hole (7a) for cooperating with the end of the bent tube (B), the other end of the support plate (7) is hinged to the fourth support (8), the fourth clamping assembly (9) is located on one side of the fourth support (8), and the fourth clamping assembly (9) is pressed against the support plate (7) after cooperating with the support plate (7).

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