Convex rib dotting tong head

Abstract

The utility model relates to the field of plier heads, and discloses a convex rib dotting plier head which comprises a fixing plate connected with a lower plier handle and an upper plier handle, the lower plier handle and the upper plier handle are rotationally arranged on the fixing plate, an extrusion assembly used for dotting a pipe is arranged on the fixing plate, and a bearing assembly used for bearing the pipe is arranged at the bottom of the extrusion assembly; the vertical downward force can be generated by jacking the upper plier handle upwards and transmitted to the extrusion assemblies, the vertical downward force can more effectively apply the force of the extrusion assemblies to a pipe, the dotting definition and depth are ensured, meanwhile, the close distance between the extrusion assemblies can be adjusted, and the efficiency of dotting is improved. Therefore, the forming depth and shape of the convex rib can be controlled, the uniformity and consistency of the convex rib are guaranteed, meanwhile, the arc-shaped supporting plate can be better attached to the curved surface of a pipe, stable supporting is provided, unnecessary movement or rolling of the pipe in the extrusion process is avoided, and the forming precision of the convex rib is further guaranteed.

Description

Technical Field

[0001] The present application relates to the field of pliers heads, and in particular to a rib-dotting pliers head. Background Art

[0002] In the production and processing of pipes, rib clamps are used to locally squeeze the pipes to form ribs. The ribs can significantly improve the bending and compression resistance of the pipes, making them more able to withstand external loads.

[0003] Existing rib dotting pliers often fix the upper and lower clamps through a scissor-type connection. The two clamps are brought close to each other to apply pressure to the local part of the pipe to form a rib. The scissor-type connection utilizes the principle of leverage and can generate greater pressure under a smaller force. However, due to the nonlinear change of the lever force, the force transmission path of the scissor-type connection is longer, which will cause the pressure to disperse, thereby affecting the depth and clarity of the dotting. At the same time, considering that the dotting pipes are often of higher hardness, the dispersed pressure cannot provide uniform and sufficient force, which affects the dotting effect and further affects the quality of the pipe output. In order to solve the above problems, a rib dotting pliers is proposed.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problem of pliers heads, the present application provides a pliers head with convex ribs.

[0006] The present application provides a rib dotting pliers head adopting the following technical solution:

[0007] A rib dotting pliers head, comprising a fixing plate connecting a lower pliers handle and an upper pliers handle, the lower pliers handle and the upper pliers handle are respectively rotated on the fixing plate, the fixing plate is provided with an extrusion assembly for dotting a pipe, the bottom of the extrusion assembly is provided with a supporting assembly for supporting the pipe, when the tails of the upper pliers handle and the lower pliers handle are away from each other, the extrusion assembly extrude the pipe inwardly;

[0008] The supporting assembly includes a bracket, an electric push rod, and an arc-shaped support plate. The bracket is fixed on the lower clamp handle, the electric push rod is located in the bracket, the telescopic end of the electric push rod is fixed to the arc-shaped support plate, and the arc surface of the arc-shaped support plate fits the surface of the pipe.

[0009] Preferably, the extrusion assembly includes an extrusion block, an extrusion groove, a support shaft, and a protrusion. The extrusion block is fixed on the upper clamp handle, the extrusion groove is opened in the extrusion block, the support shaft is fixed on the lower clamp handle, and the protrusion is fixed on the support shaft. When the tails of the upper clamp handle and the lower clamp handle move away from each other, the extrusion groove and the protrusion approach each other and fit together.

[0010] Preferably, a detachable elastic component is provided between the lower clamp handle and the upper clamp handle;

[0011] The elastic component comprises a spring sheet and a spring. The spring sheet is tightly fitted with the lower clamp handle and the upper clamp handle. The two ends of the spring are respectively fixed to the lower clamp handle and the upper clamp handle.

[0012] Preferably, the lower clamp handle and the upper clamp handle are both provided with a rotating groove for the connecting column to rotate, a rotating column is rotatably provided inside the connecting column, a limit block is provided on the rotating column, notches are provided at the notch of the rotating groove for the limit block to pass through, and a limit groove is provided at the bottom of the rotating groove for the limit block to rotate, a torsion block is provided on the rotating column, the torsion block and the limit block are in the same direction, and the two ends of the spring are respectively fixed to the connecting columns on the lower clamp handle and the upper clamp handle.

[0013] Preferably, a limiting plate for limiting the position of the pipe is provided on the lower clamp handle.

[0014] Preferably, the extrusion block is fixed to the upper clamp handle by means of fastening bolts, and the fastening bolts are threadedly connected to the upper clamp handle and the extrusion block respectively.

[0015] Preferably, a roller is rotatably provided on the arc-shaped supporting plate.

[0016] In summary, compared with the related art, the utility model has the following beneficial effects:

[0017] By rotating the lower clamp handle and the upper clamp handle on the fixed plate respectively, a supporting assembly for supporting the pipe is provided at the bottom of the extrusion assembly. When the tails of the upper clamp handle and the lower clamp handle move away from each other, the extrusion assembly extrudes the pipe inward, and the electric push rod pushes the arc-shaped support plate to fit the bottom of the pipe. Compared with the related technology, a vertical downward force can be generated by lifting the upper clamp handle upward and transmitted to the extrusion assembly. The vertical downward force can more effectively apply the force of the extrusion assembly to the pipe, ensuring the clarity and depth of the dot. At the same time, the distance between the extrusion assemblies can be adjusted, so as to control the depth and shape of the rib forming, and ensure the uniformity and consistency of the rib. At the same time, the arc-shaped support plate can better fit the curved surface of the pipe, provide stable support, avoid unnecessary movement or rolling of the pipe during the extrusion process, and further ensure the accuracy of the rib forming. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a side cross-sectional structure of an embodiment of the application in an extruded state;

[0019] Figure 2 It is a schematic diagram of the overall extrusion state structure of the embodiment of the application;

[0020] Figure 3 It is a schematic diagram of the overall exploded structure of the embodiment of the application;

[0021] Figure 4 is a schematic diagram of a side cross-sectional structure of a lower clamp handle according to an embodiment of the application;

[0022] Figure 5 yes Figure 4 Enlarged structural diagram at A in the middle.

[0023] Explanation of the reference numerals: 101, pipe; 1, fixing plate; 2, lower clamp handle; 3, upper clamp handle; 4, rotating shaft; 5, extrusion block; 6, extrusion groove; 7, supporting shaft; 8, protrusion; 9, limit plate; 10, bracket; 11, electric push rod; 12, arc-shaped support plate; 13, roller; 14, fastening bolt; 15, spring; 16, spring; 17, connecting column; 18, rotating column; 19, limit block; 20, torsion block; 21, rotating groove; 22, limit groove. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-5 This application is described in further detail.

[0025] The present application embodiment discloses a rib-dotting pliers head. Figure 1-5 A rib dotting pliers head, comprising a fixing plate 1 connecting a lower pliers handle 2 and an upper pliers handle 3, the lower pliers handle 2 and the upper pliers handle 3 are respectively rotated on the fixing plate 1, an extrusion assembly for dotting a pipe 101 is provided on the fixing plate 1, a supporting assembly for supporting the pipe 101 is provided at the bottom of the extrusion assembly, when the tails of the upper pliers handle 3 and the lower pliers handle 2 are away from each other, the extrusion assembly extrudes the pipe 101 inwardly;

[0026] The supporting assembly includes a bracket 10, an electric push rod 11, and an arc-shaped supporting plate 12. The bracket 10 is fixed on the lower clamp handle 2, the electric push rod 11 is located in the bracket 10, the telescopic end of the electric push rod 11 is fixed to the arc-shaped supporting plate 12, and the arc surface of the arc-shaped supporting plate 12 is in contact with the surface of the pipe 101;

[0027] It should be noted that the upper clamp handle 3 and the lower clamp handle 2 are both rotated on the fixed plate 1 via the rotating shaft 4;

[0028] It should be further explained that the setting of the arc-shaped support plate 12 can better fit the curved surface of the tube 101, provide a stable support, avoid unnecessary movement or rolling of the tube 101 during the extrusion and dotting process, and further ensure the accuracy of the rib forming;

[0029] By adopting the above technical solution, when in use, the upper clamp handle 3 is first pressed down to insert the extrusion assembly into the pipe 101, and the electric push rod 11 is started to make the arc-shaped support plate 12 fit tightly with the outer surface of the pipe 101. When the upper clamp handle 3 is pushed upward so that the tails of the upper clamp handle 3 and the lower clamp handle 2 are away from each other, the extrusion assembly extrude and dot the pipe 101.

[0030] Reference Figure 1 The extrusion assembly includes an extrusion block 5, an extrusion groove 6, a support shaft 7, and a protrusion 8. The extrusion block 5 is fixed on the upper clamp handle 3, the extrusion groove 6 is provided in the extrusion block 5, the support shaft 7 is fixed on the lower clamp handle 2, and the protrusion 8 is fixed on the support shaft 7. When the tails of the upper clamp handle 3 and the lower clamp handle 2 are away from each other, the extrusion groove 6 and the protrusion 8 are close to each other and fit together;

[0031] It should be noted that the tube 101 is sleeved on the support shaft 7, and when the extrusion groove 6 and the protrusion 8 are close to each other and fit together, there is a gap between the tube 101 and the support shaft 7 that is greater than the height of the formed rib;

[0032] By adopting the above technical solution, the tube 101 is sleeved on the support shaft 7. When the tails of the upper clamp handle 3 and the lower clamp handle 2 move away from each other, the groove 6 and the protrusion 8 approach each other until they are fitted together, so that the part of the tube 101 located between the groove 6 and the protrusion 8 is squeezed and deformed to form a rib. After the rib is formed, the maximum diameter of the tube 101 increases, but the gap between the support shaft 7 and the tube 101 can meet the need to pull out the tube 101 after the rib is generated.

[0033] Reference Figure 2 , 4 5. A detachable elastic component is provided between the lower clamp handle 2 and the upper clamp handle 3;

[0034] The elastic component includes a spring 15 and a spring 16. The spring 15 is tightly fitted with the lower clamp handle 2 and the upper clamp handle 3. The two ends of the spring 16 are respectively fixed to the lower clamp handle 2 and the upper clamp handle 3.

[0035] By adopting the above technical solution, the cooperation of the spring 15 and the spring 16 can provide better stability, ensuring that the lower clamp handle 2 and the upper clamp handle 3 are firmly fixed as a whole during the squeezing and dotting operation, avoiding dotting deviation or uneven depth caused by instability.

[0036] Reference Figure 1 , 4 5. A rotating groove 21 for the connection column 17 to rotate is provided on the lower clamp handle 2 and the upper clamp handle 3. A rotating column 18 is rotatably provided inside the connecting column 17. A stop block 19 is provided on the rotating column 18. A notch for the stop block 19 to pass through is provided at the notch of the rotating groove 21. A stop groove 22 for the stop block 19 to rotate is provided at the bottom of the rotating groove 21. A torsion block 20 is provided on the rotating column 18. The torsion block 20 is in the same direction as the stop block 19. Both ends of the spring 16 are fixed to the connection columns 17 on the lower clamp handle 2 and the upper clamp handle 3, respectively.

[0037] By adopting the above technical solution, the spring 16 will gradually lose its original elasticity and performance due to frequent expansion and contraction. The torsion block 20 is twisted to make the limit block 19 correspond to the notch at the notch of the rotating groove 21. The connecting column 17 and the rotating column 18 are pulled out of the rotating groove 21 to replace the spring 16, thereby reducing maintenance time and cost.

[0038] Reference Figure 1 The lower clamp handle 2 is provided with a limiting plate 9 for limiting the position of the pipe 101;

[0039] By adopting the above technical solution, the pipe 101 is sleeved on the support shaft 7, and the pipe mouth of the pipe 101 is against the limit plate 9, which cooperates with the arc-shaped supporting plate 12 to keep the pipe 101 stable.

[0040] Reference Figure 1 , the extrusion block 5 is fixed to the upper clamp handle 3 by a fastening bolt 14, and the fastening bolt 14 is threadedly connected to the upper clamp handle 3 and the extrusion block 5 respectively;

[0041] By adopting the above technical solution, the extrusion block 5 is fixed to the upper clamp handle 3 by the fastening bolts 14 , which facilitates the replacement and maintenance of the extrusion block 5 .

[0042] Reference Figure 1 , a roller 13 is rotatably provided on the arc-shaped support plate 12;

[0043] By adopting the above technical solution, the roller 13 can reduce the friction between the arc-shaped support plate 12 and the surface of the tube 101 when moving longitudinally, so as to facilitate the extraction of the tube 101 after the ribs are formed.

[0044] The implementation principle of a rib dotting pliers head according to an embodiment of the present application is as follows: when in use, the upper pliers handle 3 is first pressed down to move the extrusion block 5 away from the support shaft 7, and the support shaft 7 is inserted into the pipe 101 so that the pipe mouth of the pipe 101 is against the limit plate 9, the electric push rod 11 is started to make the arc-shaped support plate 12 support the pipe 101, and then the upper pliers handle 3 is pushed upward to make the tails of the upper pliers handle 3 and the lower pliers handle 2 move away from each other, so that the pressing groove 6 and the protrusion 8 are close to each other, and the part of the pipe 101 located between the pressing groove 6 and the protrusion 8 is squeezed and deformed to form a rib.

[0045] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0046] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0047] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rib-dotting pliers head, comprising a fixing plate (1) connecting a lower pliers handle (2) and an upper pliers handle (3), characterized in that: The lower clamp handle (2) and the upper clamp handle (3) are respectively rotated on the fixed plate (1), and the fixed plate (1) is provided with an extrusion assembly for dotting the pipe (101), and a supporting assembly for supporting the pipe (101) is provided at the bottom of the extrusion assembly. When the tails of the upper clamp handle (3) and the lower clamp handle (2) move away from each other, the extrusion assembly squeezes the pipe (101) inwardly; The supporting assembly comprises a bracket (10), an electric push rod (11), and an arc-shaped supporting plate (12); the bracket (10) is fixed on the lower clamp handle (2); the electric push rod (11) is located in the bracket (10); the telescopic end of the electric push rod (11) is fixed to the arc-shaped supporting plate (12); and the arc-shaped surface of the arc-shaped supporting plate (12) is in contact with the surface of the pipe (101).

2. A rib-dotting pliers head according to claim 1, characterized in that: The extrusion assembly comprises an extrusion block (5), an extrusion groove (6), a support shaft (7), and a protrusion (8); the extrusion block (5) is fixed on the upper clamp handle (3); the extrusion groove (6) is arranged in the extrusion block (5); the support shaft (7) is fixed on the lower clamp handle (2); and the protrusion (8) is fixed on the support shaft (7); when the tails of the upper clamp handle (3) and the lower clamp handle (2) move away from each other, the extrusion groove (6) and the protrusion (8) move closer to each other until they fit together.

3. The rib-dotting pliers according to claim 1, characterized in that: A detachable elastic component is provided between the lower clamp handle (2) and the upper clamp handle (3); The elastic component comprises a spring sheet (15) and a spring (16); the spring sheet (15) is tightly fitted with the lower clamp handle (2) and the upper clamp handle (3); and the two ends of the spring (16) are respectively fixed to the lower clamp handle (2) and the upper clamp handle (3).

4. A rib-dotting pliers head according to claim 3, characterized in that: The lower clamp handle (2) and the upper clamp handle (3) are both provided with a rotating groove (21) for the connecting column (17) to rotate, a rotating column (18) is rotatably provided inside the connecting column (17), a limiting block (19) is provided on the rotating column (18), a notch is provided at the notch of the rotating groove (21) for the limiting block (19) to pass through, a limiting groove (22) is provided at the bottom of the rotating groove (21) for the limiting block (19) to rotate, a torsion block (20) is provided on the rotating column (18), and the torsion block (20) and the limiting block (19) are oriented in the same direction, and the two ends of the spring (16) are respectively fixed to the connecting columns (17) on the lower clamp handle (2) and the upper clamp handle (3).

5. The rib-dotting pliers according to claim 1, characterized in that: The lower clamp handle (2) is provided with a limiting plate (9) for limiting the position of the pipe (101).

6. The rib-dotting pliers according to claim 2, characterized in that: The extrusion block (5) is fixed to the upper clamp handle (3) via a fastening bolt (14), and the fastening bolt (14) is threadedly connected to the upper clamp handle (3) and the extrusion block (5) respectively.

7. The rib-dotting pliers according to claim 1, characterized in that: A roller (13) is rotatably provided on the arc-shaped supporting plate (12).

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