An inline homogenous tube clamping mechanism and method of use

Abstract

The application relates to a pipe processing connecting piece, in particular to an embedded same-type pipe clamping mechanism and a use method, which comprises an insertion rod, a ball groove is formed in the length direction of the left end face of the insertion rod, the diameter of the ball groove increases from left to right, a through groove is formed in the side wall of the ball groove and extends to the left end face of the insertion rod, the insertion rod is divided into four same elastic sheets through the through groove; a plurality of balls are arranged in the ball groove, an inner screw hole is formed in the side face of the insertion rod and communicates with the ball groove, when the right side ball side face is located in the inner screw hole, the outer wall of the left side ball is in contact with the inner wall of the ball groove, an outer screw hole is formed in the pipe, and an inner hexagonal jack screw is matched with the outer screw hole and passes into the inner screw hole. The application is used to internally expand the pipe, so that the clamping function is realized, the structure can be completely embedded into the pipe with a diameter of less than 22 mm, the pipe has no protrusion on the outside, so that the pipe can pass through the front chuck, the end of the raw material is sent to the cutting nozzle to complete cutting, the clamping is completed, the generation of waste is reduced, and waste is reduced.

Description

Technical Field

[0001] This invention pertains to pipe processing connectors, specifically an embedded, homogeneous pipe clamping mechanism. Background Technology

[0002] In the design of pipe cutting machines, this problem inevitably arises: if the rear chuck, which clamps the pipe, cannot pass through the front chuck to ensure stable rotation of the pipe, a cutting blind zone will be created. This blind zone is caused by the following factors: 1. The portion clamped by the rear chuck. 2. The thickness of the front chuck. 3. The distance from the front end of the front chuck to the center of the cutting nozzle. 4. The safety distance reserved to prevent chuck impact. Typically, the combined length of these four parts exceeds 20cm. With commonly used raw materials being 6 meters long, this results in waste accounting for 3%-4% of the raw material. Such waste is generally unacceptable to producers in actual processing. The usual solution is to pneumatically open the front chuck when the rear chuck reaches a certain position, allowing the rear chuck to pass through. This reduces the cutting blind zone to around 5cm. However, these hollow pneumatic chucks are typically expensive (around 20,000 RMB), making them unaffordable for small and medium-sized producers. Summary of the Invention

[0003] This invention provides an embedded, homogeneous tube clamping mechanism to address the deficiencies in the prior art.

[0004] This invention is achieved through the following technical solution:

[0005] An embedded, identical tube clamping mechanism includes an insertion rod. A ball groove is formed on the left end face of the insertion rod along its length. The diameter of the ball groove increases from left to right. A through groove is formed on the side wall of the ball groove, extending to the left end face of the insertion rod. The insertion rod is divided into four identical spring pieces through the through groove. Several balls are provided in the ball groove. An internal threaded hole communicating with the ball groove is formed on the side of the insertion rod. When the side of the right ball is located in the internal threaded hole, the outer wall of the left ball contacts the inner wall of the ball groove. An external threaded hole is formed on the tube. An internal hexagonal set screw that passes through the external threaded hole and enters the internal threaded hole is fitted into the external threaded hole.

[0006] In use, the left end of the insertion rod is inserted into the pipe behind it, and the right end of the insertion rod is inserted into the pipe being processed. Then, the internal hexagonal set screw is inserted into the internal threaded hole through the external threaded hole. Since the right ball is located in the internal threaded hole and the left ball is in contact with the inner wall of the ball groove, rotating the internal hexagonal set screw compresses the right ball and rotates it into the external threaded hole. The right ball is pushed to the left by the internal hexagonal set screw, which in turn drives the left ball to move to the left. Since the left ball is in contact with the inner wall of the ball groove and the ball groove increases in size from left to right, the spring is pushed outward by the ball, and thus the elastic energy supports the inner wall of the pipe, realizing the compression of the pipe. According to the friction force, the pipe and the spring generate friction, thus realizing the connection of the two pipes.

[0007] Preferably, the device also includes the insert, the outer wall of which is adapted to the inner wall of the tube, and the insert has a slot adapted to the spring. A blocking block is fixedly connected to the spring of the insert, and the height of the blocking block is greater than the height of the gap between the insert and the spring.

[0008] Preferably, the insertion rod includes a long rod and a short rod, the diameter of the short rod being larger than that of the long rod, the short rod and the long rod being connected and fixedly connected by a frustum-shaped intermediate rod, the internal threaded hole being opened on the short rod, and the ball groove extending from the long rod to the short rod.

[0009] Preferably, the internal threaded hole extends through the short rod. This allows the short rod to be rotated within 180 degrees to align with the external threaded hole, making the threaded hole easier to align.

[0010] A method for using an embedded, homogeneous tube clamping mechanism includes the following steps:

[0011] (1) Insert the short rod into the processed tube, then fit the corresponding insert according to the shape of the tube behind, and insert the insert together with the insert into the tube behind;

[0012] (2) Then rotate the internal hexagon set screw, starting from the external threaded hole and rotating it into the internal threaded hole. While rotating in the internal threaded hole, the internal hexagon set screw squeezes the ball to move away from the internal hexagon set screw. The ball then pushes the spring piece outwards and makes the insert contact with the inner wall of the pipe behind, thus realizing the connection between the front and rear pipes.

[0013] The beneficial effects of this invention are as follows: The use of this application tightens the pipe from the inside, thereby realizing the clamping function. Since this structural design can be completely embedded in pipes with a diameter of less than 22mm, there are no protrusions on the outside of the pipe. Therefore, it can be used as a pipe of the same type. The raw material end is sent to the vicinity of the cutting nozzle through the front chuck to complete the cutting. While completing the clamping, the generation of waste material is reduced, thereby reducing waste. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 yes Figure 1 AA section diagram;

[0017] Figure 3 It is a diagram showing the fit between the spring and the insert.

[0018] As shown in the figure:

[0019] 1. Insert rod, 2. Ball groove, 3. Through groove, 4. Spring, 5. Ball, 6. Internal threaded hole, 7. Insert, 8. Slot, 9. Block, 11. Long rod, 12. Short rod, 13. Intermediate rod. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] An embedded, homogeneous tube clamping mechanism and its usage method, such as Figure 1-3 As shown. It includes an insertion rod 1 and an insert 7. The insertion rod 1 includes a long rod 11 and a short rod 12. The diameter of the short rod 12 is larger than that of the long rod 11. The short rod 12 and the long rod 11 are connected and fixedly connected by a frustum-shaped intermediate rod 13. A ball groove 2 is formed on the left end face of the long rod 11 along its length direction. The diameter of the ball groove 2 increases from left to right. A through groove 3 is formed on the side wall of the ball groove 2, extending to the left end face of the long rod 11. The long rod 11 is divided into four identical spring pieces 4 by the through groove 3. Two balls 5 are provided in the ball groove 2. An internal threaded hole 6 communicating with the ball groove 2 is formed on the side of the short rod 12. When the side of the right ball 5 is located in the internal threaded hole 6, the outer wall of the left ball 5 contacts the inner wall of the ball groove 2. An external threaded hole is formed on the tube, and an internal hexagonal set screw that passes through the external threaded hole and into the internal threaded hole 6 is fitted into the external threaded hole.

[0022] The outer wall of the insert 7 is adapted to the inner wall of the tube. Therefore, the outer wall of the insert 7 can be rectangular or a quarter-circle arc. When the insert 7 is rectangular, the corner away from the ball groove 2 is cut with a bevel, so that it can be better accommodated in the rectangular tube when the spring 4 is unfolded. The insert 7 has a slot 8 that is adapted to the spring 4. A blocking block 9 is fixedly connected to the spring 4 of the insert 7. The height of the blocking block 9 is greater than the height of the gap between the insert 7 and the spring 4.

[0023] In use, this application first involves fitting the corresponding insert 7 according to the type of pipe. Then, the spring 4 and insert 7 are inserted into the pipe to be processed. The right end of the end rod is inserted into the pipe being processed. Next, the internal hexagonal set screw is inserted into the internal threaded hole 6 through the external threaded hole. Since the right ball 5 is partially located within the internal threaded hole 6 and the left ball 5 is in contact with the inner wall of the ball groove 2, rotating the internal hexagonal set screw simultaneously compresses the right ball 5 and rotates it into the external threaded hole, thus achieving the desired result. In the connection of the pipes, the right ball bearing 5 is moved to the left by the internal hexagonal set screw, which in turn drives the left ball bearing 5 to move to the left. Since the left ball bearing 5 is in contact with the inner wall of the ball groove 2 and the ball groove 2 increases in size from left to right, the spring piece 4 is pried open outward under the action of the ball bearing 5. The spring piece 4 then drives the insert 7 to support on the inner wall of the pipe, thereby squeezing the pipe. According to the principle of friction and under the action of the blocking plate, friction is generated between the pipe and the insert 7, thus connecting the two pipes.

[0024] The internal threaded hole 6 passes through the short rod 12. This allows the short rod 12 to be rotated within 180 degrees to align with the external threaded hole, making the threaded hole easier to align.

[0025] The use of this application tightens the pipe from the inside, thereby achieving the clamping function. Since this structural design can be completely embedded in pipes with a diameter of less than 22mm, there are no protrusions on the outside of the pipe. Therefore, it can be used as a pipe of the same type. The material end is sent to the vicinity of the cutting nozzle through the front chuck to complete the cutting. While completing the clamping, the generation of waste is reduced, thereby reducing waste.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to 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 the present invention.

Claims

1. An inline, same-type tube clamping mechanism, characterized by: The insertion rod comprises a left end face, a ball groove is formed in the length direction of the left end face, the diameter of the ball groove increases from left to right, a through groove is formed in the side wall of the ball groove, the through groove extends to the left end face of the insertion rod, the insertion rod is divided into four identical elastic pieces through the through groove, a plurality of balls are arranged in the ball groove, an inner screw hole is formed in the side face of the insertion rod and communicates with the ball groove, when the right side ball is located in the inner screw hole, the outer wall of the left side ball is in contact with the inner wall of the ball groove, an outer screw hole is formed in the pipe, an inner hexagonal jack is screwed into the inner screw hole through the outer screw hole, the pipe further comprises an insert piece, the outer wall of the insert piece is matched with the inner wall of the pipe, an insertion groove is formed in the insert piece and matched with the elastic piece, a blocking piece is fixedly connected to the elastic piece of the insert piece, and the height of the blocking piece is greater than the height of the gap between the insert piece and the elastic piece.

2. The inline, homogenous tube clamping mechanism of claim 1, wherein: The insertion rod comprises a long rod and a short rod, the diameter of the short rod is greater than that of the long rod, the short rod and the long rod are fixedly connected through a circular truncated cone-shaped middle rod, the inner screw hole is formed in the short rod, and the ball groove extends to the short rod through the long rod.

3. The inline, homogenous tube clamping mechanism of claim 2, wherein: The inner screw hole penetrates the short rod.

4. A method of using the inline same-type tube clamping mechanism according to any one of claims 1-3, characterized in that, The method comprises the following steps: (1) inserting the short rod into the processed pipe, then according to the shape of the rear pipe, the corresponding insert piece is sleeved and inserted into the rear pipe together with the insert piece; (2) then rotating the inner hexagonal jack, the inner hexagonal jack is rotated from the outer screw hole and into the inner screw hole, while the inner hexagonal jack rotates in the inner screw hole, the balls are pressed to move away from the inner hexagonal jack, then the balls are expanded to the four sides and make the insert piece contact with the inner wall of the rear pipe, thereby realizing the connection between the front and rear pipes.

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