Feeding device of pipe cutting machine

Abstract

The utility model relates to the technical field of machining, in particular to a pipe cutting machine feeding device which comprises a base, a support, a feeding trolley and a walking mechanism used for driving the feeding trolley to move in a reciprocating mode in the machining axis direction. The clamping mechanism comprises a first oil cylinder, a first swing arm and a second swing arm, the first swing arm and the second swing arm are symmetrically arranged along the machining center line, a pair of feeding clamping jaws are correspondingly arranged at the tail end of the first swing arm and the tail end of the second swing arm, and a proximity switch and a signaling block are arranged at the tail end of the first swing arm or the tail end of the second swing arm. According to the feeding device of the pipe cutting machine, workpieces can be automatically conveyed to the pipe cutting machine through electrical control according to the required lengths of the workpieces, the feeding device can be suitable for different coupling sizes and coupling lengths, the automation degree is high, and the flexibility is high. The servo motor drives the lead screw nut mechanism to drive the feeding trolley to feed, feeding is more stable, and product quality and production efficiency are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a feeding device for a pipe cutting machine. Background Art

[0002] Steel pipe couplings are parts used to connect steel pipes. During the production of couplings, a long pipe needs to be transported to a pipe cutter, which cuts the long pipe into the required length. Currently, most pipe cutters require manual feeding and tail material unloading, and cannot accurately feed according to the required length of the pipe cutter. In addition, the feeding is unstable, which wastes human resources and affects production efficiency.

[0003] Therefore, it is necessary to propose an improvement to overcome the defects of the prior art. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art and provide a feeding device for a pipe cutting machine with high automation and good stability.

[0005] The technical solution of the utility model is:

[0006] A feeding device for a pipe cutting machine comprises: a bracket, a feeding trolley movably arranged on the bracket, and a walking mechanism for driving the feeding trolley to reciprocate along the machining axis direction; the feeding trolley is provided with a clamping mechanism for clamping a workpiece to be cut; the clamping mechanism comprises a first oil cylinder, a first swing arm and a second swing arm symmetrically arranged along the machining center line; the first swing arm is connected to the output end of the first oil cylinder, the second swing arm is connected to the input end of the first oil cylinder, a pair of feeding claws are correspondingly arranged at the ends of the first swing arm and the second swing arm, the first oil cylinder is telescopically extended to drive the feeding claws on the first swing arm and the second swing arm to clamp and release the steel pipe, and a proximity switch and a signal transmitting block are arranged at the end of the first swing arm or the second swing arm.

[0007] The steel pipe is clamped by the clamping mechanism, the signal block moves, the proximity switch sends a signal, and the walking mechanism drives the feeding trolley to transport the steel pipe according to the required length of the pipe cutting machine. The feeding trolley then returns to the initial position and continues to clamp the steel pipe and feed it forward. This process is repeated until the proximity switch does not send a signal after the feeding claws are clamped. The feeding trolley moves forward to clamp the tailings, returns, and the bracket slides to drive the feeding trolley to move to the unloading position to unload the tailings. The entire process is automatically controlled with a high degree of automation.

[0008] As a preferred technical solution, the travel mechanism includes a guide rail fixed on a bracket, a lead screw, a lead screw nut matched with the lead screw, and a driving mechanism for driving the lead screw to rotate. The guide rail is extended along the processing axis direction, a slider matched with the guide rail is fixed on the feeding trolley, the lead screw nut is fixedly connected to the slider, and the rotation of the lead screw drives the feeding trolley to reciprocate along the guide rail. Using the lead screw nut mechanism as the travel mechanism has high transmission efficiency and stable operation, making the feeding process more stable.

[0009] As a preferred technical solution, the first swing arm is provided with a first gear, the second swing arm is correspondingly provided with a second gear, and the first gear and the second gear are meshed with each other. The meshing of the first gear and the second gear can improve the clamping accuracy.

[0010] As a preferred technical solution, the bracket is slidably arranged on the base, a second oil cylinder is arranged between the bracket and the base, the input end of the second oil cylinder is connected to the base, the output end of the second oil cylinder is connected to the bracket, and the second oil cylinder is telescopic to drive the bracket to slide on the base. It is convenient for the bracket to drive the feeding trolley to return to the unloading device for tail material unloading.

[0011] As a further preferred technical solution, the driving mechanism is a servo motor, which is connected to the lead screw via a coupling. Using a servo motor as a driving mechanism has higher motion accuracy, smoother operation, and faster response speed.

[0012] As a preferred technical solution, the two feeding jaws are fixed to the ends of the first swing arm and the second swing arm respectively by screws, so that the feeding jaws can be easily replaced after being worn out after long-term use.

[0013] The beneficial effects of the utility model are as follows:

[0014] The utility model provides a feeding device for a pipe cutting machine. Through electrical control, the workpiece can be automatically conveyed to the pipe cutting machine according to the required workpiece length, and can be adapted to different coupling sizes and coupling lengths. The device has a high degree of automation and flexibility. The servo motor drives the lead screw nut mechanism to drive the feeding trolley to feed the material, and the feeding is more stable, thereby ensuring product quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the feeding device of the pipe cutting machine of the utility model;

[0016] Figure 2 For this utility model Figure 1 Partial magnified image;

[0017] Among them, 1. the first cylinder; 2. the feeding trolley; 3. the guide rail; 4. the lead screw; 5. the servo motor; 6. the first swing arm; 7. the proximity switch; 8. the signal block; 9. the feeding claw; 10. the first gear; 11. the second gear; 12. the second swing arm; 13. the second cylinder; 14. the bracket; 15. the base; 16. the slide block; 17. the positioning baffle; 18. the steel card; 19. the tool center. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1 and Figure 2 As shown, a feeding device for a pipe cutting machine in this embodiment includes a base 15, a bracket 14 slidably arranged on the base 15, a feeding trolley 2 movably arranged on the bracket 14, and a traveling mechanism for driving the feeding trolley 2 to reciprocate along the processing axis direction. A second oil cylinder 13 is arranged between the base 15 and the bracket 14, the input end of the second oil cylinder 13 is connected to the base 15, the output end of the second oil cylinder 13 is connected to the bracket 14, and the second oil cylinder 13 is telescopic to drive the bracket 14 to slide on the base 15.

[0022] The feeding trolley 2 is provided with a clamping mechanism for clamping the workpiece to be cut, and the clamping mechanism includes a first oil cylinder 1, a first swing arm 6 and a second swing arm 12 symmetrically arranged along the machining center line, the first swing arm 6 is connected to the output end of the first oil cylinder 1, and the second swing arm 12 is connected to the input end of the first oil cylinder 1. A first gear 10 is provided on the first swing arm 6, and a second gear 11 is correspondingly provided on the second swing arm 12, and the first gear 10 and the second gear 11 are meshed with each other. A pair of feeding claws 9 are correspondingly provided at the ends of the first swing arm 6 and the second swing arm 12, and the two feeding claws 9 are fixed by screws. The first oil cylinder 6 is telescopically driven to drive the feeding claws 9 on the first swing arm 6 and the second swing arm 12 to clamp and release the steel pipe. A proximity switch 7 and a signal block 8 are provided at the end of the first swing arm 6 or the second swing arm 12.

[0023] The traveling mechanism can be a linear transmission mechanism such as a linear motor or a hydraulic cylinder. Any structure that can meet the use requirements of the present invention is within the protection scope of the present invention. In order to make the measurement result more accurate, the transmission device in this embodiment is preferably a screw nut mechanism.

[0024] The walking mechanism of this embodiment includes a guide rail 3 fixed on a bracket 14, a lead screw 4, a lead screw nut matched with the lead screw 4, and a driving mechanism for driving the lead screw 4 to rotate. In this embodiment, the driving mechanism is preferably a servo motor 5, which is connected to the lead screw 4 via a coupling. The guide rail 3 is extended along the machining axis direction, a slider 16 matched with the guide rail 3 is fixed on the feeding trolley 2, the lead screw nut is fixedly connected to the slider 16, and the rotation of the lead screw 4 drives the feeding trolley 2 to reciprocate along the guide rail 3.

[0025] Working principle: The first oil cylinder 1 extends, driving the first swing arm 6 and the second swing arm 12 to clamp the steel pipe under the meshing action of the first gear 10 and the second gear 11. The signal block 8 on the feeding claw 9 moves to the proximity switch 7 to send a signal, and the servo motor 5 starts to work. The feeding trolley 2 moves horizontally on the guide rail 3 driven by the lead screw 4. For the first time, the steel pipe is transported to the position of the positioning baffle 17 to determine the initial position of the steel pipe. The maximum forward stroke of the feeding trolley 2 is L1, and the distance between the positioning baffle 17 and the tool center 19 is L. The feeding trolley 2 retreats to the starting position B, and the feeding claw 9 clamps the steel pipe and continues to move and feed to the end position C of the feeding trolley 2 (at this time, the steel pipe is fed a distance of L1). The feeding trolley 2 retreats a distance of L-L1+the length of a coupling, and the feeding trolley 2 moves forward a distance of L-L1+the length of a coupling. The steel clamp 18 is clamped by the spring, and the feeding claw 9 is released and retreats by a coupling length, and the pipe cutting begins. After cutting, the feeding trolley 2 continues to feed the pipe forward by a coupling length, and this process is repeated until the feeding trolley 2 retreats by a coupling length, and the proximity switch 7 does not send a signal after the feeding claw 9 is clamped, and the feeding trolley 2 advances by a coupling length to clamp the coupling, and returns to the starting position B, the second oil cylinder 13 extends, and the feeding trolley 2 delivers the tailings to the unloading device A.

[0026] The above description is only a preferred embodiment of the utility model, and is not intended to limit the scope of implementation of the utility model. That is, all equivalent changes and modifications made according to the content of the patent application scope of the utility model should belong to the technical scope of the utility model.

Claims

1. A feeding device for a pipe cutting machine, It is characterized in that include: A support (14), a feeding trolley (2) movably arranged on the support (14), and a walking mechanism for driving the feeding trolley (2) to reciprocate along the machining axis direction. The feeding trolley (2) is provided with a clamping mechanism for clamping a workpiece to be cut. The clamping mechanism comprises a first oil cylinder (1), a first swing arm (6) and a second swing arm (12) symmetrically arranged along the machining center line. The first swing arm (6) is connected to the output end of the first oil cylinder (1), and the second swing arm (12) is connected to the input end of the first oil cylinder (1). A pair of feeding claws (9) are correspondingly arranged at the ends of the first swing arm (6) and the second swing arm (12). The first oil cylinder (1) is telescopically driven to drive the feeding claws (9) on the first swing arm (6) and the second swing arm (12) to clamp and release the steel pipe. A proximity switch (7) and a signal sending block (8) are arranged at the ends of the first swing arm (6) or the second swing arm (12).

2. A pipe cutting machine feeding device according to claim 1, It is characterized in that The walking mechanism comprises a guide rail (3) fixed on a bracket (14), a lead screw (4), a lead screw nut cooperating with the lead screw (4), and a driving mechanism for driving the lead screw (4) to rotate. The guide rail (3) is extended along the processing axis direction. A slider (16) cooperating with the guide rail (3) is fixed on the feeding trolley (2). The lead screw nut is fixedly connected to the slider (16). The rotation of the lead screw (4) drives the feeding trolley (2) to reciprocate along the guide rail (3).

3. A pipe cutting machine feeding device according to claim 1, It is characterized in that The first swing arm (6) is provided with a first gear (10), and the second swing arm (12) is correspondingly provided with a second gear (11), and the first gear (10) and the second gear (11) are meshed with each other.

4. A pipe cutting machine feeding device according to claim 2, It is characterized in that The driving mechanism is a servo motor (5), and the servo motor (5) is connected to the lead screw (4) via a coupling.

5. A pipe cutting machine feeding device according to any one of claims 1 to 4, It is characterized in that The bracket (14) is slidably arranged on the base (15); a second oil cylinder (13) is arranged between the bracket (14) and the base (15); an input end of the second oil cylinder (13) is connected to the base (15); an output end of the second oil cylinder (13) is connected to the bracket (14); the second oil cylinder (13) is telescopically driven to drive the bracket (14) to slide on the base (15).

6. A pipe cutting machine feeding device according to claim 5, It is characterized in that The two feeding claws (9) are respectively fixed to the ends of the first swing arm (6) and the second swing arm (12) by screws.

Images