Limiting clamp suitable for production of steel pipes with different hole diameters

Abstract

The utility model discloses a limiting clamp suitable for production of steel pipes with different hole diameters, and relates to the technical field of steel pipe machining. The device comprises a U-shaped block, the inner wall of the U-shaped block is rotatably matched with a two-way screw rod, the two-way screw rod is in threaded fit with two tightening blocks, operation cavities are formed in the two tightening blocks, one sides of the inner walls of the two operation cavities are rotatably matched with driving rods, and the close sides of the two driving rods are fixedly connected with hollow rings. A plurality of sliding openings are formed in the sides, close to each other, of the two hollow rings. Through the arrangement of the first worm, the first worm gear and the driving rod, the pulling rod can be held by hand to be separated from the pulling rod, the stepping motor is started to drive the first worm to rotate the first worm gear, the first worm gear drives the corresponding driving rod and the hollow ring to rotate, then the fixed steel pipe can be turned over directly, and the steel pipe does not need to be disassembled to be fixed. And the operation process and time are relatively saved, so that the efficiency in the production process is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel pipe processing, and in particular relates to a production limiting clamp suitable for steel pipes with different apertures. Background Art

[0002] The limit clamp used in the steel pipe production of the prior art is a specially designed tool used to fix and position the steel pipe during the processing to ensure processing accuracy and product quality. The main function of the limit clamp is to fix the steel pipe to prevent it from moving or shaking during the processing, thereby ensuring the stability and accuracy of the processing.

[0003] Chinese patent application number CN202322556399.9 discloses a clamping and positioning workbench for steel pipe processing, including a base plate, a first side plate and a second side plate are fixedly connected on both sides of the upper end of the base plate, a motor is fixedly installed on the inner wall of the first side plate, a coupling is sleeved on the motor, a screw rod is sleeved on the coupling, a slider is provided on the screw rod, and a rotating shaft is provided at the end of the screw rod, a clamping mechanism is provided on the upper end of the first side plate and the slider, and a support leg is provided at the lower end of the base plate.

[0004] The above existing technology, through the contraction of the bidirectional cylinder, that is, the two output ends are brought closer to each other, thereby driving the clamping plate and the arc plate above them to approach each other until the steel pipe can be clamped. The rubber pad compressed by the extrusion spring can restrain the surface of the steel pipe and increase the friction, and can protect the steel pipe from shaking. However, in actual use, after clamping, when processing different positions of the steel pipe, it is necessary to loosen the fixation of the steel pipe again, and then rotate the steel pipe to the corresponding direction and then fix it again before processing. As a result, when processing different positions of the steel pipe, the operation process is complicated, which greatly affects the processing efficiency.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a production limit clamp suitable for steel pipes with different apertures.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0008] A limit clamp for the production of steel pipes with different apertures, comprising a U-shaped block, the inner wall of the U-shaped block being rotatably engaged with a bidirectional screw rod, the threads on the bidirectional screw rod being engaged with two tightening blocks, an operating cavity being provided inside the two tightening blocks, a driving rod being rotatably engaged on one side of the inner wall of the two operating cavities, a hollow ring being fixedly connected to the adjacent sides of the two driving rods, a plurality of sliding openings being provided on the adjacent sides of the two hollow rings, a tensioning block being slidably engaged with the inner walls of the plurality of sliding openings, and a driving assembly cooperating with the tensioning block being rotatably engaged on one side of the inner wall of the hollow ring;

[0009] A first worm gear is fixedly connected to one of the two driving rods, and a first worm gear meshing with the first worm gear is rotated on the lower side of the inner wall of the operating chamber. A stepping motor fixedly connected to the first worm gear is fixedly connected to the upper side of one of the two tightening blocks, and a locking assembly is provided inside the other of the two tightening blocks.

[0010] Optionally, in order to facilitate the expansion or contraction driving of the tensioning block, the driving assembly includes a rotating rod rotatably engaged with the inner walls of the two hollow rings, a driving disk fixedly connected to the rotating rod, a push-pull block rotatably engaged with one side of the driving disk and rotatably engaged with multiple tensioning blocks, a second worm gear fixedly connected to the rotating rod, an extension plate fixedly connected to one side of the driving disk, and a second worm gear rotatably engaged with the upper side of the extension plate and meshing with the second worm gear.

[0011] Optionally, in order to fix the other tightening block, the locking assembly includes a hollow block fixedly connected to the other upper side of the tightening block, a linkage block slidingly fitted in the hollow block, a pull rod fixedly connected to the upper side of the linkage block, a spring fixedly connected to the upper side of the linkage block and sleeved on the pull rod, a pin fixedly connected to the lower side of the linkage block, and a clamping port opened on the other of the two driving rods and cooperating with the pin.

[0012] Optionally, in order to facilitate the operation of the second worm, an operating button is fixedly connected to the upper side of the second worm, and the upper end of the second worm extends to the outside of the hollow ring and rotates together.

[0013] Optionally, in order to increase the stability of the tightening block during movement, a guide groove is provided on the lower side of the inner wall of the U-shaped block, and the inner wall of the guide groove is slidably fitted with a guide block fixedly connected to the two tightening blocks.

[0014] Optionally, in order to reduce scratch damage to the steel pipe when it is fixed, a hard rubber sheet is fixedly connected to one side of the multiple tensioning blocks, and the multiple hard rubber sheets are bonded to the tensioning blocks.

[0015] Optionally, in order to drive the bidirectional lead screw, a drive motor is fixedly connected to one side of the U-shaped block, and an output end of the drive motor is fixed to one end of the bidirectional lead screw.

[0016] Optionally, in order to improve the convenience of operating the pull rod, a force button is fixedly connected to the upper side of the pull rod, and the upper end of the pull rod extends to one side of the hollow ring and slides together.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described below at the same time:

[0018] 1. The utility model is provided with a first worm, a first worm wheel and a driving rod, which can be separated by pulling the rod by hand, and the stepping motor is started to drive the first worm to rotate the first worm wheel, and the first worm wheel drives the corresponding driving rod and the hollow ring to rotate, so that the fixed steel pipe can be directly turned over without disassembling and flipping and then fixing, which relatively saves the operation process and time, thereby improving the efficiency of the production process.

[0019] 2. The utility model is provided with a driving assembly, a sliding port and a tensioning block, so that the steel pipe sleeve can be arranged on the outside of the corresponding tensioning block, and the corresponding tensioning block is driven by the driving assembly to support the inner wall of the steel pipe sleeve. Steel pipes of different sizes can be fixed according to the degree of tension. At the same time, after being fixed, there will be no obstruction to the outer wall of the steel pipe, which improves the convenience for subsequent all-round processing.

[0020] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described below are only some embodiments. A person skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the overall three-dimensional cross-sectional structure of an embodiment of the present utility model;

[0024] Figure 3 This is a schematic side cross-sectional structural diagram of an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of a three-dimensional cross-sectional structure of a hollow ring according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of a three-dimensional cross-sectional structure of a tightening block according to an embodiment of the present invention;

[0027] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0028] 1. U-shaped block; 2. Bidirectional screw; 3. Tightening block; 4. Operating chamber; 5. Drive rod; 6. Hollow ring; 7. Sliding mouth; 8. Tensioning block; 9. Drive assembly; 901. Rotating rod; 902. Drive disk; 903. Push-pull block; 904. Second worm gear; 905. Extension plate; 906. Second worm; 10. First worm gear; 11. First worm; 12. Stepper motor; 13. Locking assembly; 131. Hollow block; 132. Linkage block; 133. Pull rod; 134. Spring; 135. Latch; 136. Clamping mouth; 14. Operating button; 15. Guide groove; 16. Guide block; 17. Hard rubber; 18. Drive motor; 19. Force button.

[0029] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0030] The present invention will now be described in further detail with reference to the accompanying drawings.

[0031] See also Figure 1-5 As shown, in this embodiment, a limit clamp for the production of steel pipes with different apertures is provided, including a U-shaped block 1, the inner wall of the U-shaped block 1 is rotatably matched with a bidirectional screw rod 2, and two tightening blocks 3 are threadedly matched on the bidirectional screw rod 2. An operating cavity 4 is provided inside the two tightening blocks 3, and a driving rod 5 is rotatably matched on one side of the inner wall of the two operating cavities 4. A hollow ring 6 is fixedly connected to the adjacent side of the two driving rods 5, and a plurality of sliding openings 7 are provided on the adjacent side of the two hollow rings 6. The inner walls of the plurality of sliding openings 7 are slidably matched with a tensioning block 8, and a driving assembly 9 that cooperates with the tensioning block 8 is rotatably matched on one side of the inner wall of the hollow ring 6;

[0032] A first worm gear 10 is fixedly connected to one of the two driving rods 5, and a first worm 11 that is rotatably engaged with the first worm gear 10 is rotatably coupled to the lower side of the inner wall of the operating chamber 4. A stepping motor 12 that is fixedly connected to the first worm gear 11 is fixedly connected to the upper side of one of the two tightening blocks 3, and a locking assembly 13 is provided inside the other of the two tightening blocks 3.

[0033] See also Figure 4The driving assembly 9 includes a rotating rod 901 rotatably engaged with the inner walls of the two hollow rings 6, a driving disk 902 fixedly connected to the rotating rod 901, a push-pull block 903 rotatably engaged with one side of the driving disk 902 and rotatably engaged with multiple tensioning blocks 8, a second worm gear 904 fixedly connected to the rotating rod 901, an extension plate 905 fixedly connected to one side of the driving disk 902, and a second worm 906 rotatably engaged with the upper side of the extension plate 905 and meshed with the second worm gear 904. By rotating the second worm 906, the second worm gear 904 can be driven to rotate, and the rotating rod 901 is driven to rotate by the second worm gear 904. The driving disk 902 is mobilized to rotate by the rotating rod 901, and then the push-pull block 903 pushes the corresponding tensioning block 8 to move in the sliding port 7, thereby achieving the movement of the tensioning block 8. By moving the tensioning block 8 to different distances, the inner diameters of different steel pipes can be stretched and clamped.

[0034] See also Figure 5 The locking assembly 13 includes a hollow block 131 fixedly connected to the other upper side of the tightening block 3, a linkage block 132 slidingly fitted in the hollow block 131, a pulling rod 133 fixedly connected to the upper side of the linkage block 132, a spring 134 fixedly connected to the upper side of the linkage block 132 and sleeved on the pulling rod 133, a latch 135 fixedly connected to the lower side of the linkage block 132, and a clamping mouth 136 opened on the other of the two driving rods 5 and cooperating with the latch 135. When rotation is not required, the linkage block 132 is squeezed by the spring 134 so that the latch 135 on the lower side of the linkage block 132 is inserted into the clamping mouth 136 to fix the corresponding driving rod 5. When the steel pipe needs to be flipped, the linkage block 132 can be moved by pulling the pulling rod 133, so that the latch 135 is separated from the clamping mouth 136 to release the restriction.

[0035] See also Figure 3 The upper side of the second worm 906 is fixedly connected with an operating button 14, and the upper end of the second worm 906 extends to the outside of the hollow ring 6 and rotates to cooperate, in order to facilitate the operation of the second worm 906 and improve the convenience of operation.

[0036] See also Figure 3 and Figure 5 A guide groove 15 is provided on the lower side of the inner wall of the U-shaped block 1. The inner wall of the guide groove 15 is slidably fitted with a guide block 16 fixedly connected to the two tightening blocks 3. When the tightening block 3 moves, the guide block 16 slides in the guide groove 15, and the tightening block 3 improves its stability during movement.

[0037] See also Figure 3 A hard rubber sheet 17 is fixedly connected to one side of the multiple tensioning blocks 8. The multiple hard rubber sheets 17 are bonded to the tensioning blocks 8. The hard rubber sheets 17 can reduce the scratch damage caused to the steel pipe when the tensioning blocks 8 are fixed to the steel pipe.

[0038] See also Figure 2 and Figure 3 A drive motor 18 is fixedly connected to one side of the U-shaped block 1, and the output end of the drive motor 18 is fixed to one end of the bidirectional screw rod 2. The bidirectional screw rod 2 can be driven by the drive motor 18.

[0039] See also Figure 3 and Figure 5 The upper side of the pull rod 133 is fixedly connected with a force button 19, and the upper end of the pull rod 133 extends to one side of the hollow ring 6 and slides together. The force button 19 can increase the hand-held contact area when pulling the pull rod 133, thereby improving the convenience of operation.

[0040] The implementation principle of the limit clamp for the production of steel pipes with different apertures in the embodiment of the present application is as follows: when in use, the U-shaped block 1 is first fixed in the corresponding position, and then the inner diameter of the steel pipe to be processed is sleeved on the upper side of the tensioning block 8, and then the second worm gear 904 and the rotating rod 901 are driven to rotate by rotating the second worm gear 906 respectively, and the driving disk 902 is driven to rotate accordingly by the rotating rod 901, pushing the corresponding push-pull block 903, so that the push-pull block 903 expands the tensioning block 8 outward from the inside of the sliding port 7, thereby achieving the expansion and fixation of steel pipes with different inner diameters, and at the same time, after being fixed, it will not cause obstruction to the outer wall of the steel pipe, thereby improving the convenience for subsequent all-round processing;

[0041] When the steel pipe needs to be changed during the processing, 125 and 126 can be separated by hand-held pulling rod 133, and the stepper motor 12 can be started to drive the first worm 11 to rotate the first worm gear 10, and the corresponding drive rod 5 and hollow ring 6 are driven to rotate through the first worm gear 10, so that the fixed steel pipe can be directly turned over without disassembly and then fixed, which saves operation process and time, thereby improving the efficiency of the production process. After flipping to the appropriate position, by loosening the pulling rod 133, it is inserted into the clamping mouth 136 under the action of the spring 134. If there is no overlap between them, the stepper motor 12 can be rotated to fine-tune the drive rod 5, so that the pin 135 is inserted into the corresponding clamping entrance 146, and the corresponding drive rod 5 is fixed.

[0042] The present invention is not limited to the above-described embodiments. Any structural changes made under the guidance of the present invention should be understood by anyone. Any technical solution that is the same or similar to the present invention falls within the scope of protection of the present invention. The technology, shape, and structure not described in detail in the present invention are all known technologies.

Claims

1. A limit clamp suitable for the production of steel pipes with different apertures, characterized in that: include: A U-shaped block (1) is provided, wherein the inner wall of the U-shaped block (1) is rotatably engaged with a bidirectional screw rod (2), and the upper thread of the bidirectional screw rod (2) is engaged with two tightening blocks (3), and an operating cavity (4) is provided inside the two tightening blocks (3), and a driving rod (5) is rotatably engaged on one side of the inner wall of the two operating cavities (4), and a hollow ring (6) is fixedly connected to the adjacent side of the two driving rods (5), and a plurality of sliding openings (7) are provided on the adjacent side of the two hollow rings (6), and the inner walls of the plurality of sliding openings (7) are slidably engaged with a tensioning block (8), and a driving assembly (9) that is engaged with the tensioning block (8) is rotatably engaged on one side of the inner wall of the hollow ring (6); A first worm gear (10) is fixedly connected to one of the two driving rods (5); a first worm (11) is rotatably matched with the first worm gear (10) on the lower side of the inner wall of the operating chamber (4); a stepping motor (12) fixedly connected to the first worm gear (11) is fixedly connected to the upper side of one of the two tightening blocks (3); and a locking assembly (13) is provided inside the other of the two tightening blocks (3).

2. The limit clamp for producing steel pipes with different apertures according to claim 1, characterized in that: The driving assembly (9) comprises a rotating rod (901) rotatably engaged with the inner walls of the two hollow rings (6), a driving disk (902) fixedly connected to the rotating rod (901), a push-pull block (903) rotatably engaged with one side of the driving disk (902) and rotatably engaged with a plurality of tensioning blocks (8), a second worm gear (904) fixedly connected to the rotating rod (901), an extension plate (905) fixedly connected to one side of the driving disk (902), and a second worm gear (906) rotatably engaged with the upper side of the extension plate (905) and meshed with the second worm gear (904).

3. The limit clamp for producing steel pipes with different apertures according to claim 1, characterized in that: The locking assembly (13) comprises a hollow block (131) fixedly connected to the other upper side of the tightening block (3), a linkage block (132) slidingly fitted in the hollow block (131), a pulling rod (133) fixedly connected to the upper side of the linkage block (132), a spring (134) fixedly connected to the upper side of the linkage block (132) and sleeved on the pulling rod (133), a latch (135) fixedly connected to the lower side of the linkage block (132), and a clamping port (136) provided on the other of the two driving rods (5) and fitted with the latch (135).

4. The limit clamp for producing steel pipes with different apertures according to claim 2, characterized in that: An operating button (14) is fixedly connected to the upper side of the second worm (906), and the upper end of the second worm (906) extends to the outside of the hollow ring (6) and rotates in engagement.

5. The limit clamp for producing steel pipes with different apertures according to claim 1, characterized in that: A guide groove (15) is provided on the lower side of the inner wall of the U-shaped block (1), and a guide block (16) fixedly connected to the two tightening blocks (3) is slidably matched with the inner wall of the guide groove (15).

6. The limiting fixture for producing steel pipes with different apertures according to claim 1, characterized in that: A hard rubber sheet (17) is fixedly connected to one side of the plurality of tensioning blocks (8), and the plurality of hard rubber sheets (17) are bonded to the tensioning blocks (8).

7. The limit clamp for producing steel pipes with different apertures according to claim 1, characterized in that: A driving motor (18) is fixedly connected to one side of the U-shaped block (1), and an output end of the driving motor (18) is fixed to one end of a bidirectional screw rod (2).

8. The limiting fixture for producing steel pipes with different apertures according to claim 3 is characterized in that: The upper side of the pulling rod (133) is fixedly connected with a force button (19), and the upper end of the pulling rod (133) extends to one side of the hollow ring (6) and is slidably fitted.

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