A cutting and pipe reducing machine

Abstract

The utility model relates to pipe processing technical field, especially cut pipe shrinking machine. The problem of unstable feeding, poor cooperation and low efficiency is solved. Including: feeding assembly, conveying pipe material, cutting pipe shrinking assembly is set downstream in feeding assembly, receives and processes pipe material, wherein, feeding assembly includes: support, conveying mechanism sets up on the support, drives pipe material axial movement, positioning mechanism sets up opposite conveying mechanism, and pipe material is positioned on conveying mechanism by compacting, cutting pipe shrinking assembly includes: first clamping mechanism, slidingly sets up in linear guide rail by motor drive, clamps and drives pipe material to move, material blocking mechanism sets up downstream in first clamping mechanism, and the front end of pipe material is positioned by stopping, second clamping mechanism sets up downstream in material blocking mechanism, and pipe material is fixed and clamped during processing, pipe shrinking mechanism sets up downstream in second clamping mechanism, and pipe shrinking is formed to pipe material end, cutting mechanism sets up above pipe shrinking mechanism, and pipe material is cut.

Description

Technical Field

[0001] This utility model relates to the field of pipe processing technology, and in particular to a pipe cutting and shrinking machine. Background Technology

[0002] Pipe cutting and end shrinking are common processes in pipe fitting manufacturing. Traditional processing methods typically involve separating cutting and shrinking operations. This means that long pipes are first cut into fixed-length sections using cutting equipment, and then transported to shrinking equipment for end forming. This method suffers from low production efficiency, large footprint, and the potential for positioning errors due to multiple loading and unloading operations, affecting product consistency.

[0003] To address the aforementioned issues, existing technologies have developed automated equipment that integrates cutting and tube shrinking functions. This type of equipment typically includes a feeding mechanism, a clamping mechanism, a cutting mechanism, and a tube shrinking mechanism. The feeding mechanism transports the tube to the processing station, where it is clamped and then cut before shrinking, or vice versa.

[0004] However, existing integrated equipment of this type still has many limitations. First, its feeding accuracy and stability are insufficient. It often uses a single friction wheel feeding method, which is prone to slippage during feeding, making it difficult to guarantee the fixed length accuracy. Second, the coordination between the clamping mechanism, cutting mechanism, and tube shrinking mechanism is poor, which limits the further improvement of the overall machine efficiency. In addition, when processing slender tubes, the lack of effective auxiliary support and precise end positioning can easily cause the tubes to vibrate or shift position during transportation and processing, which can also affect the processing quality. Utility Model Content

[0005] The purpose of this invention is to provide a cutting and shrinking machine that solves the problems of unstable feeding, poor coordination between clamping, cutting and shrinking processes, and low overall production efficiency in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a tube cutting and shrinking machine, comprising: A feeding assembly for conveying the pipe to be processed; A tube cutting and shrinking assembly is disposed downstream of the feeding assembly and is used to receive and process the tube to be processed from the feeding assembly. The feeding assembly includes: support; A conveying mechanism, which is mounted on the support, is used to drive the pipe to move axially. A positioning mechanism is provided opposite to the conveying mechanism and is used to press and position the pipe on the conveying mechanism to achieve stable conveying. The cutting and shrinking assembly is arranged sequentially along the feeding direction as follows: The first clamping mechanism is slidably mounted on the linear guide rail and driven by the first servo motor, and is used to clamp and drive the tube to move during feeding. A material-stopping mechanism is located downstream of the first clamping mechanism and is used to stop and position the front end of the pipe. The second clamping mechanism is fixedly disposed downstream of the material blocking mechanism and is used to clamp the tube during processing. A tube shrinking mechanism is located downstream of the second clamping mechanism and is used to shrink and shape the end of the tube. A cutting mechanism is disposed above the tube shrinking mechanism and is used to cut the tube formed by tube shrinking to a fixed length.

[0007] Furthermore, the conveying mechanism includes a second servo motor and a conveying wheel assembly that is drivenly connected to the second servo motor. The conveying wheel assembly includes a plurality of contouring conveying wheels spaced apart along the pipe conveying direction. The wheel surface of the contouring conveying wheel is provided with contouring grooves that are adapted to the outer contour of the pipe, so as to provide close support and drive for the pipe.

[0008] Furthermore, the positioning mechanism includes a positioning roller group and a positioning cylinder for driving the positioning roller group to press the pipe onto the conveying mechanism.

[0009] Furthermore, the first clamping mechanism includes a first clamping guide rail and a first movable clamping seat slidably mounted on the first clamping guide rail. The first movable clamping seat is provided with a first movable clamping jaw and a first fixed clamping jaw that is symmetrically arranged with the first movable clamping jaw and located on the side of the first movable clamping jaw away from the first movable clamping seat. A first hydraulic cylinder is connected to the side of the first movable clamping seat away from the first movable clamping jaw.

[0010] Furthermore, the material blocking mechanism includes an L-shaped material blocking plate, which is slidably mounted on a guide rail, and one end of the L-shaped material blocking plate is connected to a lifting cylinder.

[0011] Furthermore, the second clamping mechanism includes a second clamping guide rail and a second movable clamping jaw slidably mounted on the second clamping guide rail. The second movable clamping jaw is provided with a second movable clamping jaw and a second fixed clamping jaw located symmetrically arranged with the second movable clamping jaw and on the side of the second movable clamping jaw away from the second movable clamping jaw. A second hydraulic cylinder is connected to the side of the second movable clamping jaw away from the second movable clamping jaw.

[0012] Furthermore, the tube shrinking mechanism includes a head, a tube shrinking die sleeve detachably installed in the head, and a main hydraulic cylinder for driving the head to slide back and forth.

[0013] Furthermore, the cutting mechanism includes a column, a lifting guide rail disposed inside the column, a cutting motor slidably mounted on the lifting guide rail, and a cutting blade that is drivenly connected to the cutting motor; a lifting cylinder is installed on the top of the column, and the cutting motor is connected to the piston rod of the lifting cylinder.

[0014] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model discloses a tube cutting and shrinking machine that uses a servo motor-driven conveying mechanism and a movable first clamping mechanism to feed materials in coordination, combined with the clamping effect of a positioning mechanism on the tube, thereby effectively avoiding the slippage phenomenon that easily occurs when feeding with a traditional single friction wheel, and achieving stable axial transmission of the tube.

[0015] By setting up a movable first clamping mechanism and a fixed second clamping mechanism, and adopting an alternating clamping working logic, the parallel operation of feeding reset and cutting and shrinking processing is realized, which significantly shortens the production time and improves the overall production efficiency.

[0016] By setting up a material-stopping mechanism, the front end of the pipe is physically stopped, ensuring the positioning accuracy of the pipe and providing a stable foundation for subsequent cutting and pipe shrinking processes, thereby improving the consistency of processing quality. Attached Figure Description

[0017] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings: Figure 1 This is a schematic diagram of the overall structure of a tube cutting and shrinking machine provided by this utility model; Figure 2 This is a schematic diagram of the structure of the conveying mechanism and the positioning mechanism provided by this utility model; Figure 3 This is a schematic diagram of the structure of the first clamping mechanism, the material blocking mechanism, and the second clamping mechanism provided by this utility model; Figure 4 This is a schematic diagram of the cutting mechanism and tube shrinking mechanism provided by this utility model; The reference numerals in the attached figures are explained as follows: 1. Feeding assembly; 10. Support frame; 11. Conveying mechanism; 110. Second servo motor; 111. Transmission wheel assembly; 12. Positioning mechanism; 120. Positioning roller assembly; 121. Positioning cylinder; 2. Cutting and shrinking assembly; 20. First clamping mechanism; 200. First clamping guide rail; 201. First movable clamp seat; 202. First movable clamp jaw; 203. First fixed clamp jaw; 204. First hydraulic cylinder; 21. Material blocking mechanism; 210. L-shaped material blocking plate; 211. Guide rail; 212. Lifting cylinder; 22. Second clamping mechanism; 220. Second clamping guide rail; 221. Second movable clamp seat; 222. Second movable clamp jaw; 223. Second fixed clamp jaw; 224. Second hydraulic cylinder; 23. Shrinking mechanism; 230. Machine head; 231. Shrinking die sleeve; 232. Main hydraulic cylinder; 24. Cutting mechanism; 240. Column; 241. Lifting guide rail; 242. Cutting motor; 243. Cutting blade; 244. Lifting cylinder. Detailed Implementation

[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] See Figures 1 to 4 This example discloses a tube-cutting and shrinking machine that integrates feeding, positioning, tube shrinking and forming to fixed-length cutting. Specifically, the tube-cutting and shrinking machine includes a feeding assembly 1 and a tube-cutting and shrinking assembly 2. The feeding assembly 1 is used to transport the tube to be processed; the tube-cutting and shrinking assembly 2 is located downstream of the feeding assembly 1 and is used to receive and process the tube transported by the feeding assembly 1.

[0020] Specifically, the feeding assembly 1 includes a support 10, on which a conveying mechanism 11 is provided for driving the pipe to be processed to move axially. A positioning mechanism 12 is provided opposite to the conveying mechanism 11. In this example, the positioning mechanism 12 is positioned above the conveying mechanism 11, and is used to press and position the pipe on the conveying mechanism 11 to achieve stable conveying of the pipe.

[0021] like Figure 2As shown, the conveying mechanism 11 includes a second servo motor 110 and a conveying wheel assembly 111 that is connected to the second servo motor 110 for transmission. The conveying wheel assembly 111 includes a plurality of contouring conveying wheels spaced apart along the pipe conveying direction. The number of contouring conveying wheels and the spacing between adjacent contouring conveying wheels can be adaptively adjusted according to the length and rigidity of the pipe to ensure the straightness and stability of the conveying. In addition, the wheel surface of the contouring conveying wheels is provided with contouring grooves that are adapted to the outer contour of the pipe, thereby forming a close support for the pipe and driving the pipe to be fed stably.

[0022] The positioning mechanism 12 includes a positioning roller group 120 and a positioning cylinder 121 that drives the positioning roller group 120. The positioning cylinder 121 is fixed on the crossbeam on the bracket 10 by a cylinder seat. The piston rod end is connected to the mounting bracket of the positioning roller group 120. The positioning roller group 120 and the conveying wheel group 111 are arranged vertically and vertically respectively. The positioning cylinder 121 drives the positioning roller group 120 to move up and down, thereby pressing the pipe onto the conveying mechanism 11. Thus, together with the conveying mechanism 11, they form a stable clamping system to achieve precise axial conveying of the pipe.

[0023] The aforementioned tube-cutting and shrinking assembly 2 is provided with a first clamping mechanism 20, a material-blocking mechanism 21, a second clamping mechanism 22, a tube-shrinking mechanism 23, and a cutting mechanism 24 in sequence along the feeding direction of the tube. All mechanisms are installed on the same worktable.

[0024] Specifically, such as Figure 3 As shown, the first clamping mechanism 20 is slidably mounted on a straight guide rail via a slider and is driven by a first servo motor, enabling it to reciprocate along the guide rail as a movable clamping unit, clamping and moving the pipe during feeding. In this example, the first clamping mechanism 20 includes a first clamping guide rail 200, a first movable clamping seat 201 slidably mounted on the first clamping guide rail 200, a first movable clamping jaw 202 embedded in the first movable clamping seat 201, and a first fixed clamping jaw 203 symmetrically arranged with the first movable clamping jaw 202 and located on the side of the first movable clamping jaw 202 away from the first movable clamping seat 201. The clamping surfaces of both the first movable clamping jaw 202 and the first fixed clamping jaw 203 are machined with arc-shaped grooves adapted to the outer diameter of the pipe. Meanwhile, a first hydraulic cylinder 204 is connected to the side of the first movable clamp seat 201 away from the first movable clamp jaw 202. Its piston rod is connected to the first movable clamp seat 201 and is used to drive the first movable clamp jaw 202 to perform clamping and releasing actions.

[0025] The material-stopping mechanism 21 is located downstream of the first clamping mechanism 20 and is used to stop and position the front end of the pipe. Specifically, the material-stopping mechanism 21 includes an L-shaped baffle plate 210, which is slidably mounted on the guide rail 211. One end of the L-shaped baffle plate 210 is connected to the lifting cylinder 212. In a preferred embodiment, a pressure sensor (not shown in the figure) is installed at the stopping end of the L-shaped baffle plate 210. When the front end of the pipe contacts the baffle plate and reaches a preset pressure value, the pressure sensor sends a signal to control the feeding mechanism 11 to stop feeding, thereby achieving precise positioning.

[0026] The second clamping mechanism 22 is fixedly disposed downstream of the stop mechanism 21 and is used to fix and clamp the pipe during processing. Similar in structure to the first clamping mechanism 20, the second clamping mechanism 22 includes a second clamping guide rail 220, a second movable clamping seat 221 slidably mounted on the second clamping guide rail 220, a second movable clamping jaw 222 embedded in the second movable clamping seat 221, and a second fixed clamping jaw 223 symmetrically arranged with the second movable clamping jaw 222 and located on the side of the second movable clamping jaw 222 away from the second movable clamping seat 221. Simultaneously, a second hydraulic cylinder 224 is connected to the side of the second movable clamping seat 221 away from the second movable clamping jaw 222 to ensure reliable clamping of the pipe during pipe shrinking processing.

[0027] The tube-shrinking mechanism 23 is located downstream of the second clamping mechanism 22 and is used to shrink and shape the end of the tube. For example... Figure 4 As shown, the tube shrinking mechanism 23 includes a head 230, a tube shrinking mold sleeve 231 detachably installed inside the head 230 (the tube shrinking mold sleeve 231 contains a tube shrinking mold not shown in the figure), and a main hydraulic cylinder 232 for driving the head 230 to slide back and forth. The head 230 is mounted on a linear guide rail via a slider. The piston rod of the main hydraulic cylinder 232 is rigidly connected to the head 230. A pressure sensor (not shown in the figure) and a flow control valve (not shown in the figure) are installed in its hydraulic circuit to achieve pressure and speed control during the tube shrinking process. The tube shrinking mold sleeve 231 is quickly and accurately installed and replaced with the head 230 via locating pins and bolts. The interior of the mold sleeve can be designed with areas divided into a guide section, a forming section, and a calibration section according to the forming process. The specific length of each area can be molded according to actual needs.

[0028] The cutting mechanism 24 is positioned above the tube shrinking mechanism 23 and is used to cut the tube into fixed lengths after the tube shrinking process is completed. Specifically, the cutting mechanism 24 includes a column 240, a lifting guide rail 241 disposed inside the column 240, a cutting motor 242 slidably mounted on the lifting guide rail 241, and a cutting blade 243 that is drivenly connected to the cutting motor 242. A lifting cylinder 244 is also mounted on the top of the column 240, and the cutting motor 242 is connected to the piston rod of the lifting cylinder 244 to realize the up and down feeding movement of the cutting blade 243.

[0029] Work process The working process of the tube cutting and shrinking machine disclosed in this example is as follows: 1. Fixed-length feeding: The first clamping mechanism 20 clamps the pipe and, driven by the first servo motor, works in conjunction with the conveying mechanism 11 to feed the pipe forward until the front end of the pipe abuts against the L-shaped baffle of the lowered baffle mechanism 21. The pressure sensor sends a signal, the feeding stops, and the fixed-length feeding is completed.

[0030] 2. Handover and Preparation for Processing: The baffle plate is raised to make way under the drive of the lifting cylinder. The second clamping mechanism 22 clamps the pipe at the processing station.

[0031] 3. Parallel Processing and Reset: After the second clamping mechanism 22 clamps, the first clamping mechanism 20 releases. Subsequently, the main hydraulic cylinder 232 of the tube shrinking mechanism 23 drives the machine head 230 forward, causing the tube shrinking mold sleeve 231 (which contains a tube shrinking mold not shown in the figure) to shrink the end of the tube fixed by the second clamping mechanism 22. After tube shrinking is completed, the lifting cylinder 244 of the cutting mechanism 24 drives the cutting motor 242 and the cutting blade 243 downward to cut the tube to a fixed length. At the same time, the released first clamping mechanism 20 returns to its initial position under the drive of the first servo motor.

[0032] 4. Cycle Start: Cutting is complete, the second clamping mechanism 22 releases, and the processed pipe falls. At this time, the first clamping mechanism 20 has reset and clamped the pipe again, and the equipment enters the next working cycle.

[0033] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A tube cutting and shrinking machine, characterized in that, include: Feeding assembly (1), the feeding assembly (1) is used to convey the pipe to be processed; Cutting and shrinking assembly (2), the cutting and shrinking assembly (2) is located downstream of the feeding assembly (1) and is used to receive and process the pipe to be processed from the feeding assembly (1); The feeding assembly (1) includes: Support (10); A conveying mechanism (11) is mounted on the support (10) and is used to drive the pipe to move axially. Positioning mechanism (12), which is arranged opposite to the conveying mechanism (11), is used to press and position the pipe on the conveying mechanism (11) to achieve stable conveying; The cutting and shrinking assembly (2) is provided with the following components sequentially along the feeding direction: The first clamping mechanism (20) is slidably mounted on the linear guide rail and driven by the first servo motor, and is used to clamp and drive the pipe to move during feeding. A material blocking mechanism (21) is provided downstream of the first clamping mechanism (20) and is used to stop and position the front end of the pipe. The second clamping mechanism (22) is fixedly disposed downstream of the material blocking mechanism (21) and is used to clamp the tube during processing; Tube shrinking mechanism (23), which is located downstream of the second clamping mechanism (22), is used to shrink and shape the end of the tube; The cutting mechanism (24) is located above the tube shrinking mechanism (23) and is used to cut the tube formed by tube shrinking to a fixed length.

2. The tube cutting and shrinking machine according to claim 1, characterized in that, The conveying mechanism (11) includes a second servo motor (110) and a conveying wheel assembly (111) that is connected to the second servo motor (110) for transmission. The conveying wheel assembly (111) includes a plurality of contour conveying wheels that are spaced apart along the pipe conveying direction. The wheel surface of the contour conveying wheel is provided with a contour groove that is adapted to the outer contour of the pipe to form a close fit support and drive for the pipe.

3. The tube cutting and shrinking machine according to claim 1, characterized in that, The positioning mechanism (12) includes a positioning roller group (120) and a positioning cylinder (121) for driving the positioning roller group (120) to press the pipe onto the conveying mechanism (11).

4. The tube cutting and shrinking machine according to claim 1, characterized in that, The first clamping mechanism (20) includes a first clamping guide rail (200) and a first movable clamping seat (201) slidably mounted on the first clamping guide rail (200). The first movable clamping seat (201) is provided with a first movable clamping jaw (202) and a first fixed clamping jaw (203) symmetrically arranged with the first movable clamping jaw (202) and located on the side of the first movable clamping jaw (202) away from the first movable clamping seat (201). A first hydraulic cylinder (204) is connected to the side of the first movable clamping seat (201) away from the first movable clamping jaw (202).

5. The tube cutting and shrinking machine according to claim 1, characterized in that, The material blocking mechanism (21) includes an L-shaped material blocking plate (210), which can slide up and down on the guide rail (211). One end of the L-shaped material blocking plate (210) is connected to the lifting cylinder (212).

6. The tube cutting and shrinking machine according to claim 1, characterized in that, The second clamping mechanism (22) includes a second clamping guide rail (220) and a second movable clamping seat (221) slidably mounted on the second clamping guide rail (220). The second movable clamping seat (221) is provided with a second movable clamping jaw (222) and a second fixed clamping jaw (223) symmetrically arranged with the second movable clamping jaw (222) and located on the side of the second movable clamping jaw (222) away from the second movable clamping seat (221). A second hydraulic cylinder (224) is connected to the side of the second movable clamping seat (221) away from the second movable clamping jaw (222).

7. The tube cutting and shrinking machine according to claim 1, characterized in that, The tube shrinking mechanism (23) includes a head (230), a tube shrinking die sleeve (231) detachably installed in the head (230), and a main hydraulic cylinder (232) for driving the head (230) to slide back and forth.

8. The tube cutting and shrinking machine according to claim 1, characterized in that, The cutting mechanism (24) includes a column (240), a lifting guide rail (241) disposed inside the column (240), a cutting motor (242) slidably mounted on the lifting guide rail (241), and a cutting blade (243) that is connected to the cutting motor (242) in a transmission. A lifting cylinder (244) is installed on the top of the column (240), and the cutting motor (242) is connected to the piston rod of the lifting cylinder (244).

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