Clamping mechanism

Abstract

The utility model provides a clamping mechanism, and relates to the technical field of pipe machining. The clamping mechanism comprises a supporting arm body, a cam assembly, a pressing rod, a first clamping piece and a second clamping piece, the cam assembly is rotatably arranged on the supporting arm body, the pressing rod and the first clamping piece are movably arranged on the supporting arm body, the second clamping piece is connected with the supporting arm body, the cam assembly is used for pressing the pressing rod, and the pressing rod is movably arranged on the supporting arm body. According to the clamping mechanism, the first clamping piece is used for being matched with the second clamping piece to clamp the pipe, and the clamping mechanism can clamp the pipe conveniently and rapidly.

Description

Technical Field

[0001] This application relates to the field of pipe processing technology, and more specifically, to a clamping mechanism. Background Technology

[0002] Pipe threading is a pipe processing technique mainly used to process external threads on the ends of steel pipes and other pipe materials so that they can be connected to other components in the piping system. This technique can be achieved manually or mechanically.

[0003] Before using a threading machine to thread pipes, the pipes need to be clamped, and the current pipe clamping process is mostly quite cumbersome. Utility Model Content

[0004] The purpose of this application includes, for example, providing a clamping mechanism that can conveniently and quickly clamp pipes.

[0005] The embodiments of this application can be implemented as follows:

[0006] An embodiment of this application provides a clamping mechanism, which includes a support arm, a cam assembly, a pressure rod, a first clamping member, and a second clamping member. The cam assembly is rotatably disposed on the support arm, and the pressure rod and the first clamping member are movably disposed on the support arm. The second clamping member is connected to the support arm. The cam assembly is used to press the pressure rod so that the pressure rod abuts against the first clamping member and moves toward the second clamping member. The first clamping member is used to cooperate with the second clamping member to clamp the pipe.

[0007] Optionally, the clamping mechanism further includes an adjusting block, which is rotatably disposed on the surface of the first clamping member opposite to the second clamping member. The adjusting block has abutment surfaces of different heights along its circumference, and each abutment surface is used to abut against the pressure rod.

[0008] Optionally, the first clamping member is provided with a compression spring and a ball connected to the compression spring. The bottom surface of the adjusting block is provided with a plurality of countersunk holes along the circumferential direction. The ball is used to engage with one of the countersunk holes under the force of the compression spring.

[0009] Optionally, the adjustment block is rotatably mounted on the first clamping member by a screw.

[0010] Optionally, the support arm body has a through hole, the pressure rod is movably disposed in the through hole, and the support arm body is provided with a ball screw, the length direction of the ball screw is perpendicular to the length direction of the pressure rod, and the ball screw always abuts against the pressure rod.

[0011] Optionally, the clamping mechanism further includes a tension spring, the two ends of which are connected to the support arm and the first clamping member, respectively.

[0012] Optionally, a flat key is provided on the support arm, and the first clamping member slides in cooperation with the flat key.

[0013] Optionally, the cam assembly includes a cam and a handle connected together, the cam being rotatably mounted on the support arm via a pin.

[0014] Optionally, the opposing surfaces of the first clamping member and the second clamping member are provided with serrated protrusions.

[0015] Optionally, a support rod is provided on the support arm body, and the support rod is used to cooperate with the threading machine.

[0016] The beneficial effects of the clamping mechanism provided in this application include, for example, facilitating convenient and quick clamping of pipes. This clamping mechanism includes a support arm, a cam assembly, a pressure rod, a first clamping member, and a second clamping member. The cam assembly is rotatably mounted on the support arm, and the pressure rod and the first clamping member are movably mounted on the support arm. The second clamping member is connected to the support arm. The cam assembly presses the pressure rod, causing it to abut against the first clamping member and move towards the second clamping member. The first clamping member cooperates with the second clamping member to clamp the pipe. During the pipe clamping process, the pipe is placed between the first and second clamping members. Then, the cam assembly is rotated, pressing the pressure rod against the first clamping member and moving towards the second clamping member until the first clamping member cooperates with the second clamping member to clamp the pipe. The entire pipe clamping process is convenient and quick. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the clamping mechanism from a first-view perspective in an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the clamping mechanism from a second perspective in an embodiment of this application;

[0020] Figure 3 for Figure 2 A sectional view along the AA direction;

[0021] Figure 4 for Figure 3 Enlarged view of section B;

[0022] Figure 5 This is a schematic diagram of the structure of the adjustment block in an embodiment of this application.

[0023] Icons: 10-Clamping mechanism; 100-Support arm body; 110-Through hole; 120-Ball screw; 130-Flat key; 140-Pin; 150-Support rod; 200-Cam assembly; 210-Cam; 220-Handle; 300-Pressure rod; 400-First clamping member; 410-Compression spring; 420-Spherical body; 430-Protrusion; 500-Second clamping member; 600-Adjusting block; 610-Abutting surface; 620-Counterhole; 630-Pressing part; 700-Tension spring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0029] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0030] The inventors of this application have discovered that pipes need to be clamped before threading them using a threading machine, and the current pipe clamping process is mostly cumbersome. Embodiments of this application provide a clamping mechanism to at least solve this technical problem.

[0031] Please refer to Figures 1-5 The clamping mechanism 10 provided in the embodiments of this application includes a support arm 100, a cam assembly 200, a pressure rod 300, a first clamping member 400, and a second clamping member 500. The cam assembly 200 is rotatably disposed on the support arm 100. The pressure rod 300 and the first clamping member 400 are movably disposed on the support arm 100. The second clamping member 500 is connected to the support arm 100. The cam assembly 200 is used to press the pressure rod 300 so that the pressure rod 300 abuts against the first clamping member 400 and moves toward the second clamping member 500. The first clamping member 400 is used to cooperate with the second clamping member 500 to clamp the pipe.

[0032] The pressure rod 300 is located on the side of the first clamping member 400 away from the second clamping member 500. The moving direction of the pressure rod 300 and the first clamping member 400 is the same. The moving direction of the pressure rod 300 and the first clamping member 400 is along the line connecting the first clamping member 400 and the second clamping member 500. The second clamping member 500 is integrally formed with the support arm body 100.

[0033] During the pipe clamping process, the pipe is placed between the first clamping member 400 and the second clamping member 500. Then, the cam assembly 200 is rotated, and the cam assembly 200 presses the pressure rod 300. The pressure rod 300 abuts against the first clamping member 400 and moves toward the second clamping member 500 until the first clamping member 400 cooperates with the second clamping member 500 to clamp the pipe. The entire pipe clamping process is convenient and quick.

[0034] In this embodiment, the clamping mechanism 10 further includes an adjusting block 600, which is rotatably disposed on the surface of the first clamping member 400 away from the second clamping member 500. The adjusting block 600 has abutment surfaces 610 of different heights along its circumference, and each abutment surface 610 is used to abut against the pressure rod 300.

[0035] The rotation plane of the adjusting block 600 is perpendicular to the rotation plane of the cam assembly 200. When the pressure rod 300 abuts against the contact surface 610 at different heights, the distance between the first clamping member 400 and the second clamping member 500 is different. Thus, the distance between the first clamping member 400 and the second clamping member 500 can be pre-adjusted according to the pipe material of different diameters, thereby improving production efficiency.

[0036] In this embodiment, the first clamping member 400 is provided with a compression spring 410 and a ball 420 connected to the compression spring 410. The bottom surface of the adjusting block 600 is provided with a plurality of countersunk holes 620 along the circumferential direction. The ball 420 is used to engage with one of the countersunk holes 620 under the force of the compression spring 410.

[0037] The compression spring 410 is embedded inside the first clamping member 400. The top of the compression spring 410 is connected to the ball 420. Under the force of the compression spring 410, the ball 420 extends out of the first clamping member 400 away from the surface of the second clamping member 500 and engages with one of the countersunk holes 620, thereby positioning the adjusting block 600.

[0038] When the ball 420 is engaged with one of the countersunk holes 620, the pressure rod 300 is facing one of the abutment surfaces 610. The multiple countersunk holes 620 correspond one-to-one with the multiple abutment surfaces 610. When it is necessary to adjust the distance between the first clamping member 400 and the second clamping member 500, the adjusting block 600 is rotated so that the ball 420 is engaged with the corresponding countersunk hole 620, thereby allowing the pressure rod 300 to abut with the corresponding abutment surface 610.

[0039] In this embodiment, the adjustment block 600 is rotatably mounted on the first clamping member 400 by screws.

[0040] The screw can be a socket head cap screw. The socket head cap screw is passed through the adjusting block 600 and the first clamping member 400 in sequence, so that the adjusting block 600 and the first clamping member 400 are rotatably connected.

[0041] In other embodiments, the adjustment block 600 may also be rotatably mounted on the first clamping member 400 via a shaft or other component, as long as the smooth rotation of the adjustment block 600 can be ensured.

[0042] In this embodiment, a through hole 110 is provided on the support arm body 100, and the pressure rod 300 is movably disposed in the through hole 110. A ball screw 120 is provided on the support arm body 100, and the length direction of the ball screw 120 is perpendicular to the length direction of the pressure rod 300. The ball screw 120 always abuts against the pressure rod 300.

[0043] The axial direction of the through hole 110 is consistent with the line connecting the first clamping member 400 and the second clamping member 500, and the length direction of the pressure rod 300 is consistent with the axial direction of the through hole 110. A ball screw 120 is embedded on the support arm body 100. The ball head at the end of the ball screw 120 extends into the through hole 110 and abuts against the pressure rod 300, so that the pressure rod 300 remains stationary without external force, thus playing a positioning role for the pressure rod 300.

[0044] It should be noted that the ball screw 120 is also known as a ball head plunger, ball screw, ball screw, positioning ball, steel ball set spring screw, etc. It is a fastener that relies on a spring to push the front ball head out a certain stroke. The ball screw 120 is usually composed of a spring, steel ball and housing, and is widely used in mold, fixture, assembly and other fields.

[0045] In other embodiments, the wall of the pressure rod 300 may have a certain frictional force with the wall of the through hole 110. This frictional force must be greater than the weight of the pressure rod 300. In this case, the pressure rod 300 can remain relatively fixed with the support arm 100 even without the action of external force.

[0046] In this embodiment, the clamping mechanism 10 further includes a tension spring 700, the two ends of which are connected to the support arm 100 and the first clamping member 400, respectively.

[0047] There are two tension springs 700, which are symmetrically arranged on both sides of the support arm 100. The two ends of each tension spring 700 are connected to the support arm 100 and the first clamping member 400, respectively.

[0048] The adjusting block 600 is provided with a pressing part 630. When the distance between the first clamping member 400 and the second clamping member 500 is pre-adjusted according to the pipe material of different diameters, the pressing part 630 is pressed, the tension spring 700 is stretched, and the adjusting block 600 is rotated at the same time until the pressure rod 300 is aligned with the corresponding abutment surface 610. Then the pressing part 630 is released, and the pressure rod 300 can abut with the corresponding abutment surface 610 under the reset action of the tension spring 700, thus completing the pre-adjustment of the distance between the first clamping member 400 and the second clamping member 500.

[0049] Since the ball screw 120 always applies force to the pressure rod 300, the pressure rod 300 will not change position due to gravity when the adjusting block 600 is pressed down.

[0050] In other embodiments, the tension spring 700 may be replaced with other elastic elements, such as rubber or plastic elastic elements, as long as they can help the first clamping member 400 to reset.

[0051] In this embodiment, a flat key 130 is provided on the support arm 100, and the first clamping member 400 slides in cooperation with the flat key 130.

[0052] The flat key 130 can be fixed to the support arm 100 by bolts. The length direction of the flat key 130 is consistent with the line connecting the first clamping member 400 and the second clamping member 500. The first clamping member 400 is provided with a sliding groove. The first clamping member 400 slides with the flat key 130 through the sliding groove, which can improve the stability of the first clamping member 400 during movement.

[0053] In other embodiments, the flat key 130 can also be replaced by a slide rail, the length direction of which is consistent with the line direction connecting the first clamping member 400 and the second clamping member 500, and the slide groove on the first clamping member 400 can slide in cooperation with the slide rail.

[0054] In this embodiment, the cam assembly 200 includes a cam 210 and a handle 220 connected to each other. The cam 210 is rotatably mounted on the support arm 100 via a pin 140.

[0055] The pin 140 is inserted into the support arm 100. The pin 140 can be a knurled pin. The cam 210 is rotatably connected to the pin 140. The handle 220 is threadedly connected to the cam 210. Rotating the handle 220 will cause the cam 210 to rotate around the pin 140, and then the cam 210 will press against the pressure rod 300 and move downward.

[0056] In this embodiment, the opposing surfaces of the first clamping member 400 and the second clamping member 500 are both provided with serrated protrusions 430.

[0057] The first clamping member 400 and the second clamping member 500 each have multiple protrusions 430, which are arranged sequentially along the surface of the first clamping member 400 or the second clamping member 500. By providing serrated protrusions 430 on the opposing surfaces of the first clamping member 400 and the second clamping member 500, the first clamping member 400 and the second clamping member 500 can clamp the pipe more stably.

[0058] Understandably, the shape of the protrusion 430 can also be strip-shaped or wavy. As long as the first clamping member 400 and the second clamping member 500 can clamp the pipe more stably, the shape of the protrusion 430 can be determined according to the actual working conditions.

[0059] In this embodiment, a support rod 150 is provided on the support arm 100, and the support rod 150 is used to cooperate with the threading machine.

[0060] The extension direction of the support rod 150 is consistent with the extension direction of the pipe. Before threading the pipe, the support rod 150 is inserted into the mating hole on the threading machine so that the pipe clamped between the first clamping member 400 and the second clamping member 500 can be threaded later.

[0061] The working principle of the clamping mechanism 10 provided in this embodiment is as follows: During the clamping process of the pipe, the pipe is placed between the first clamping member 400 and the second clamping member 500. Then, the handle 220 is rotated, and the handle 220 drives the cam 210 to rotate. The cam 210 presses the pressure rod 300, and the pressure rod 300 abuts against the first clamping member 400 and moves toward the second clamping member 500 until the first clamping member 400 cooperates with the second clamping member 500 to clamp the pipe. After the pipe is threaded, the handle 220 is rotated in the opposite direction, and the handle 220 drives the cam 210 to rotate. The cam 210 releases the pressure on the pressure rod 300. The pressure rod 300, together with the adjusting block 600 and the first clamping member 400, moves upward under the reset action of the tension spring 700, thereby releasing the clamping of the pipe.

[0062] In summary, this application provides a clamping mechanism 10, which includes a support arm 100, a cam assembly 200, a pressure rod 300, a first clamping member 400, and a second clamping member 500. During the clamping process of the pipe, the pipe is placed between the first clamping member 400 and the second clamping member 500. Then, the handle 220 is rotated, which drives the cam 210 to rotate. The cam 210 presses the pressure rod 300, and the pressure rod 300 abuts against the first clamping member 400 and moves toward the second clamping member 500 until the first clamping member 400 cooperates with the second clamping member 500 to clamp the pipe. The first clamping member 400 and the second clamping member 500 clamp the pipe through the serrated protrusions 430 on their two opposing surfaces. The entire pipe clamping process is convenient and quick.

[0063] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A clamping mechanism, characterized in that, The device includes a support arm, a cam assembly, a pressure rod, a first clamping member, and a second clamping member. The cam assembly is rotatably mounted on the support arm, and the pressure rod and the first clamping member are movably mounted on the support arm. The second clamping member is connected to the support arm. The cam assembly is used to press the pressure rod so that the pressure rod abuts against the first clamping member and moves toward the second clamping member. The first clamping member is used to cooperate with the second clamping member to clamp the pipe.

2. The clamping mechanism according to claim 1, characterized in that, The clamping mechanism further includes an adjusting block, which is rotatably disposed on the surface of the first clamping member away from the second clamping member. The adjusting block has abutment surfaces of different heights along its circumference, and each abutment surface is used to abut against the pressure rod.

3. The clamping mechanism according to claim 2, characterized in that, The first clamping member is provided with a compression spring and a ball connected to the compression spring. The bottom surface of the adjusting block is provided with a plurality of countersunk holes along the circumferential direction. The ball is used to engage with one of the countersunk holes under the force of the compression spring.

4. The clamping mechanism according to claim 2, characterized in that, The adjustment block is rotatably mounted on the first clamping member by screws.

5. The clamping mechanism according to claim 1, characterized in that, The support arm has a through hole, and the pressure rod is movably disposed in the through hole. The support arm is provided with a ball screw, the length direction of which is perpendicular to the length direction of the pressure rod, and the ball screw always abuts against the pressure rod.

6. The clamping mechanism according to claim 1, characterized in that, The clamping mechanism also includes a tension spring, the two ends of which are connected to the support arm and the first clamping member, respectively.

7. The clamping mechanism according to claim 1, characterized in that, A flat key is provided on the support arm, and the first clamping member slides in cooperation with the flat key.

8. The clamping mechanism according to claim 1, characterized in that, The cam assembly includes a cam and a handle connected together, the cam being rotatably mounted on the support arm via a pin.

9. The clamping mechanism according to claim 1, characterized in that, The opposing surfaces of the first clamping member and the second clamping member are provided with serrated protrusions.

10. The clamping mechanism according to claim 1, characterized in that, A support rod is mounted on the support arm, and the support rod is used to cooperate with the threading machine.

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