Machine head of pipe bending machine

Abstract

The utility model discloses a machine head of a pipe bending machine. The machine head comprises a supporting frame; the swing arm assembly comprises a rotating shaft, a swing frame and a bending mechanism, the rotating shaft is rotationally supported on the supporting frame, the swing frame is installed on the rotating shaft, and the bending mechanism is installed on the swing frame; the profiling assembly comprises a sliding seat, a supporting seat, a profiling part, a driving device and a sliding driving device, the sliding seat is installed on the supporting frame in a sliding mode, the supporting seat is installed on the sliding seat in a sliding mode, and the profiling part is installed on the supporting seat in a sliding mode; the driving device comprises a first servo motor, and the first servo motor is connected with the profiling piece; the sliding driving device is connected with the sliding seat; and the swing arm driving assembly comprises a second servo motor, and the second servo motor is connected with the rotating shaft. The utility model solves the problem that the feed amount of the linear part of the machine head of the existing pipe bending machine cannot be accurately matched with the length required by the bending mechanism, and realizes the universal installation of a leftward bent pipe and a rightward bent pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe bending machines, and in particular mainly relates to a pipe bending machine head. Background Art

[0002] A pipe bender is a mechanical device used to process metal pipes or tubes. It can bend straight pipes into the desired shape to meet the needs of various engineering and manufacturing fields. Pipe bender is commonly used to make pipes, pipe connectors, frame structures, etc.

[0003] The head of a pipe bender generally includes a feeding mechanism that can move the pipe in a straight line, and a bending mechanism for bending the pipe. Different molds are installed on the corresponding mechanisms during operation, so that pipes of different sizes can be bent. In existing pipe bender heads, the linear feeding mechanism and the bending mechanism are mostly controlled by hydraulic cylinders or by springs. However, since the oil supply of the hydraulic system is often unstable, the spring coefficient will also change after long-term use, resulting in the feeding mechanism and the bending mechanism having unstable speeds within the stroke, so that the feeding amount of the pipe by the linear feeding mechanism and the bending length of the pipe required by the bending mechanism cannot be accurately matched, which leads to errors in shape and size, or defects such as wrinkles when the pipe is bent, affecting the quality of the product.

[0004] In view of this, it is necessary to improve the head of the existing pipe bending machine. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a pipe bending machine head to solve the problem that the feed amount of the straight part of the existing pipe bending machine head and the required length of the bending mechanism cannot be accurately matched, thereby improving the quality of pipe products.

[0006] The utility model discloses a pipe bending machine head, comprising: a support frame; a swing arm assembly, the swing arm assembly comprising a rotating shaft, a swing frame and a bending mechanism, the rotating shaft is rotatably supported on the support frame, the swing frame is installed on the rotating shaft, and the bending mechanism is installed on the swing frame; a mold assembly, the mold assembly comprising a sliding seat, a support seat, a mold part, a driving device and a sliding driving device, the sliding seat is slidably installed on the support frame, the support seat is slidably installed on the sliding seat, and the mold part is slidably installed on the support seat; the driving device comprises a first servo motor, the first servo motor is connected to the mold part; the sliding driving device is connected to the sliding seat; a swing arm driving assembly, the swing arm driving assembly comprises a second servo motor, and the second servo motor is connected to the rotating shaft.

[0007] Preferably, a rack is mounted on the mold member, and the driving device includes a reducer and a gear. The reducer is connected to the first servo motor, and the gear is mounted on the reducer, and the gear is meshed with the rack.

[0008] Preferably, the swing arm drive assembly includes a sprocket and a chain, at least two sprockets are provided, and one part of the sprockets is installed on the rotating shaft, and the other part of the sprockets is installed on the second servo motor, and the chain is connected to the two parts of the sprockets.

[0009] Preferably, the bending mechanism includes a driving member, a connecting rod group, a supporting member and a bending abutment member, the driving member and the connecting rod group are installed on the swing frame, the driving member is connected to the connecting rod group, the connecting rod group is connected to the supporting member, and the bending abutment member is installed on the supporting member.

[0010] Preferably, the bending abutment member is slidably connected to the support member, a first adjusting screw is mounted on the support member, and the first adjusting screw is connected to the bending abutment member.

[0011] Preferably, a guide roller is mounted on the sliding seat, and the guide roller is connected to the supporting member.

[0012] Preferably, the mold assembly includes a second adjusting screw, the second adjusting screw is mounted on the sliding seat, and the second adjusting screw is connected to the supporting seat.

[0013] Preferably, the bending abutment member has a first abutment surface, and the support member has a second abutment surface. When the swing frame is not driven to move, the second abutment surface and the first abutment surface are parallel to each other.

[0014] Preferably, two guide rollers are provided, and the two guide rollers are adjacently arranged along the sliding direction of the supporting member.

[0015] Preferably, the sliding drive device adopts a hydraulic cylinder.

[0016] The beneficial effects of the present invention are:

[0017] The feed rates of the first servo motor and the second servo motor are precisely controllable. Therefore, when bending a pipe, the first servo motor and the second servo motor cooperate with each other to ensure that the feeding mechanism and the bending mechanism of the pipe are precisely synchronized, ensuring that the feed rate required for bending is the same as the feed rate of the pipe moving in the linear direction, thereby avoiding errors in the shape and size of the pipe caused by the asynchronous bending and feeding of the pipe. In addition, by installing guide rollers on the sliding seat, when the supporting mold feeds the pipe through the mold, the guide rollers can provide rolling support, making the position of the supporting mold more stable, thereby also avoiding the occurrence of bending defects to a certain extent.

[0018] It can be seen that the utility model solves the problem that the feed amount of the straight part of the existing pipe bending machine head and the length required by the bending mechanism cannot be accurately matched, thereby improving the quality of pipe products.

[0019] The utility model adopts servo motor control and rotating shaft rotation operation through servo data transmission control matching, which can complete the bending forming of products with thin pipe wall thickness and small pipe bending radius in the industry.

[0020] In addition, the swing arm assembly and the mold assembly are both detachable structures and can be installed on the left-hand rotating or right-hand rotating pipe bending machine head, which realizes the universal installation of left-hand bending and right-hand bending pipes, so that the pipe fittings can be bent in both left and right directions when bending the pipes, which has better versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of the utility model, from a first perspective;

[0023] Figure 2 This is a schematic diagram of the overall structure of the utility model, from the second viewing angle;

[0024] Figure 3 It is a partial structural diagram of the utility model, used to illustrate the bending mechanism;

[0025] Figure 4 This is a schematic diagram of the overall structure of the utility model, from a third perspective;

[0026] Figure 5 This is an exploded view of the support member and the support seat.

[0027] Explanation of the accompanying drawings: 1. Support frame; 11. Connecting plate; 2. Swing arm assembly; 21. Rotating shaft; 22. Swing frame; 23. Bending mechanism; 231. Driving member; 232. Connecting rod group; 233. Support member; 234. Bending abutment member; 2341. First abutment surface; 235. First adjusting screw; 3. Backing member; 31. Sliding seat; 311. Roller frame; 312. Guide roller; 32. Support seat; 33. Backing member; 331. Rack; 332. Second abutment surface; 34. Driving device; 341. First servo motor; 342. Reducer; 343. Gear; 35. Second adjusting screw; 36. Sliding driving device; 4. Swing arm driving assembly; 41. Second servo motor; 42. Sprocket; 43. Chain. DETAILED DESCRIPTION

[0028] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0029] Reference Figure 1-5 , is a pipe bending machine head disclosed in the utility model, including a support frame 1, a swing arm assembly 2, a mold assembly 3 and a swing arm drive assembly 4, wherein the support frame 1 is used for the installation and connection of various components, the support frame 1 has a connecting plate 11, and a plurality of through holes are opened on the connecting plate 11. When in use, the support frame 1 is installed on the frame of the pipe bending machine through the connecting plate 11 as a whole; the swing arm assembly 2 includes a rotating shaft 21, a swing frame 22 and a bending mechanism 23. When working, the rotating shaft 21 is vertically arranged, and the rotating shaft 21 is rotatably supported on the support frame 1 through a bearing, and the swing frame 22 is fixedly installed on the rotating shaft 21, so that the rotation of the rotating shaft 21 can drive the swing frame 22 to rotate to perform the bending action.

[0030] Reference Figure 1-5 The bending mechanism 23 includes a driving member 231, a connecting rod group 232, a support member 233, a bending abutment member 234 and a first adjusting screw 235. The driving member 231 adopts a hydraulic cylinder or an air cylinder. The driving member 231 is rotatably connected to the swing frame 22. The driving member 231 has a retractable driving rod. The connecting rod group 232 includes a plurality of connecting rods rotatably connected to each other. Some connecting rods of the connecting rod group 232 are rotatably supported on the swing frame 22, and the other part of the connecting rod is rotatably connected to the support member 233. The retractable driving rod of the driving member 231 is rotatably connected to the connecting rod group 232, so that the driving rod of the driving member 231 can drive the support member 233 to move by telescoping, and can be driven to the corresponding work station when performing the pipe bending operation; the bending abutment member 234 is slidably connected to the support member 233, and the sliding direction is perpendicular to the rotating shaft 21. When in use, the bending abutment member 234 is slid to a suitable position and then fixedly connected to the support member 233 through a fixing member.

[0031] Reference Figure 1-5Specifically, the bending abutment 234 is a bracket for installing a bending mold (not shown in the figure), and the bending abutment 234 has a first abutment surface 2341, which is a plane. When in use, the above-mentioned bending mold is installed on the first abutment surface 2341 and faces the pipe to be bent. The first adjusting screw 235 is rotatably supported on the support member 233. The first adjusting screw 235 is parallel to the sliding direction of the bending abutment 234 and is threadedly connected to the bending abutment 234 through a preset threaded hole on the bending abutment 234. Then, by rotating the first adjusting screw 235, the position of the bending abutment 234 can be changed, which is convenient for fine-tuning the bending position of the bending mold.

[0032] Reference Figure 1-5 The backing mold assembly 3 includes a sliding seat 31, a support seat 32, a backing mold member 33, a driving device 34, a second adjusting screw 35 and a sliding driving device 36, wherein the sliding seat 31 is slidably connected to the support frame 1 through a linear slider mechanism, and the sliding direction is perpendicular to the rotating shaft 21, the support seat 32 is slidably installed on the sliding seat 31, and the sliding direction is consistent with the sliding direction of the sliding seat 31, and the support seat 32 can be fixedly connected to the sliding seat 31 by fixing parts such as bolts; the backing mold member 33 is a long strip plate, and the backing mold member 33 is used to install the mold for clamping the pipe fitting. The backing mold member 33 is slidably installed on the support seat 3 through a linear slider mechanism 2, and the sliding direction of the support mold member 33 is the same as the length direction of the support mold member 33 itself and is perpendicular to the sliding direction of the support seat 32. A rack 331 is installed on one side surface of the support mold member 33. The rack 331 is a linear structure and is arranged along the length direction of the support mold member 33. The surface of the support mold member 33 away from the rack 331 is a second abutment surface 332, which is used to install a mold for clamping the pipe fitting. When the swing frame 22 is not driven to move, the second abutment surface 332 and the first abutment surface 2341 are in a state parallel to each other, so that the mold on the support mold member 33 and the mold on the bending abutment member 234 can be in a corresponding state.

[0033] Reference Figure 1-5The driving device 34 includes a first servo motor 341, a reducer 342 and a gear 343. The first servo motor 341 is connected to the reducer 342 to form a reduction motor module. The first servo motor 341 and the reducer 342 are installed on the support base 32. The gear 343 is installed on the output shaft of the reducer 342, and the gear 343 is engaged with the rack 331 on the mold member 33. When the first servo motor 341 is powered on and rotated, it can drive the gear 343 to rotate, thereby driving the mold member 33 to move through the rack 331, and then achieving the purpose of pushing the pipe to feed through the mold holding the pipe; in addition, the sliding base 31 is A roller frame 311 is installed, and the position of the roller frame 311 can be adjusted on the sliding seat 31. A number of guide rollers 312 are rotatably supported on the roller frame 311. The guide rollers 312 are cylindrical rollers. Preferably, two guide rollers 312 are provided. The two guide rollers 312 are adjacently arranged along the sliding direction of the support mold 33, and the guide rollers 312 are both attached to the surface of the support mold 33 away from the second abutment surface 332. When the support mold 33 is driven to move, the guide rollers 312 can rotate relative to the support mold 33 to provide rolling support for the support mold 33, so that the moving state of the support mold 33 is more stable, thereby avoiding the occurrence of bending defects.

[0034] Reference Figure 1-5 The second adjusting screw 35 is rotatably supported on the sliding seat 31, and the second adjusting screw 35 is parallel to the sliding direction of the support seat 32. A threaded hole that cooperates with the second adjusting screw 35 is preset on the support seat 32, and the second adjusting screw 35 is threadedly connected to the support seat 32 through the threaded hole. When it is necessary to fine-tune the clamping amount of the mold member 33 or to replace the mold of the pipe fitting, rotating the second adjusting screw 35 can fine-tune the installation position of the support seat 32 on the sliding seat 31. After adjusting to the right position, the support seat 32 and the sliding seat 31 are fixed, so that the clamping mold can produce a suitable clamping amount for the pipe fitting; the sliding drive device 36 adopts a hydraulic cylinder or a cylinder. The sliding drive device 36 is installed on the support frame 1. The sliding drive device 36 has a retractable drive rod, whose direction is parallel to the sliding direction of the sliding seat 31. The drive rod of the sliding drive device 36 is connected to the sliding seat 31, so that the sliding drive device 36 can drive the sliding seat 31 to slide on the support frame 1, thereby realizing the action of clamping the pipe fitting.

[0035] Reference Figure 1-5The swing arm drive assembly 4 includes a second servo motor 41, a sprocket 42 and a chain 43. The second servo motor 41 is installed on the support frame 1. A plurality of sprockets 42 are provided, wherein a part of the sprockets 42 is installed on the output shaft of the servo motor, and the other part of the sprockets 42 is installed on the rotating shaft 21. The chain 43 is connected between the above-mentioned two parts of the sprockets 42 and bypasses the sprockets 42 to realize transmission between the two parts of the sprockets 42. When the second servo motor 41 is energized, the rotating shaft 21 can be driven to rotate through the sprocket 42 and chain 43 mechanism, thereby achieving the purpose of driving the swing frame 22 to rotate as a whole to perform the action of bending the pipe.

[0036] The implementation principle of this utility model is:

[0037] When it is necessary to bend the pipe, first install a mold suitable for the pipe of that size on the bending abutment 234 and the support mold part 33, then drive the sliding seat 31 forward through the sliding drive device 36, so that the above-mentioned mold installed on the support mold part 33 can clamp the pipe to be bent, and then start the first servo motor 341, the support mold part 33 can push the pipe to move in the direction of the swing arm assembly 2, and then push the support part 233 to move through the connecting rod group 232 through the driving part 231, so that the bending abutment 234 and the mold installed thereon are pressed against the pipe, and then keep the first servo motor 341 and the second servo motor 41 working at the same time, the swing frame 22 will rotate while the pipe is fed, and the pipe is bent.

[0038] The beneficial effects of the utility model are:

[0039] Since the feed amount of the first servo motor 341 and the second servo motor 41 is precisely controllable, when bending the pipe, the first servo motor 341 and the second servo motor 41 cooperate with each other, so that the feeding mechanism and the bending mechanism 23 of the pipe can be precisely synchronized, ensuring that the feed amount required for bending is the same as the feed amount of the pipe moving in the straight direction, thereby avoiding errors in the shape and size of the pipe caused by the asynchronous bending and feeding of the pipe; in addition, by installing the guide roller 312 on the sliding seat 31, when the supporting mold part 33 feeds the pipe through the mold, the guide roller 312 can provide rolling support, making the position of the supporting mold part 33 more stable, thereby also avoiding the occurrence of bending defects to a certain extent; it can be seen that the utility model solves the problem that the feed amount of the straight part of the existing pipe bending machine head and the length required by the bending mechanism 23 cannot be precisely matched, thereby improving the quality of the pipe products.

[0040] The utility model adopts servo motor control and rotating shaft rotation operation through servo data transmission control matching, which can complete the bending forming of products with thin pipe wall thickness and small pipe bending radius in the industry.

[0041] In addition, the swing arm assembly and the mold assembly are both detachable structures and can be installed on the left-hand rotating or right-hand rotating pipe bending machine head, which realizes the universal installation of left-hand bending and right-hand bending pipes, so that the pipe fittings can be bent in both left and right directions when bending the pipes, which has better versatility.

[0042] The above is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims of the present invention.

Claims

1. A pipe bending machine head, characterized in that: include: Support frame (1); A swing arm assembly (2), the swing arm assembly (2) comprising a rotating shaft (21), a swing frame (22) and a bending mechanism (23), the rotating shaft (21) being rotatably supported on the support frame (1), the swing frame (22) being mounted on the rotating shaft (21), and the bending mechanism (23) being mounted on the swing frame (22); A backing mold assembly (3), the backing mold assembly (3) comprising a sliding seat (31), a supporting seat (32), a backing mold member (33), a driving device (34) and a sliding driving device (36), the sliding seat (31) being slidably mounted on the supporting frame (1), the supporting seat (32) being slidably mounted on the sliding seat (31), and the backing mold member (33) being slidably mounted on the supporting seat (32); the driving device (34) comprising a first servo motor (341), the first servo motor (341) being connected to the backing mold member (33); the sliding driving device (36) being connected to the sliding seat (31); A swing arm driving assembly (4), wherein the swing arm driving assembly (4) comprises a second servo motor (41), wherein the second servo motor (41) is connected to the rotating shaft (21).

2. The pipe bending machine head according to claim 1, characterized in that: A rack (331) is installed on the support member (33), and the driving device (34) comprises a reducer (342) and a gear (343), wherein the reducer (342) is connected to the first servo motor (341), the gear (343) is installed on the reducer (342), and the gear (343) is meshed with the rack (331).

3. The pipe bending machine head according to claim 1, characterized in that: The swing arm driving assembly (4) comprises a sprocket (42) and a chain (43), wherein at least two sprockets (42) are provided, and a part of the sprockets (42) is mounted on the rotating shaft (21), and another part of the sprockets (42) is mounted on the second servo motor (41), and the chain (43) is connected to the two parts of the sprockets (42).

4. The pipe bending machine head according to claim 1, characterized in that: The bending mechanism (23) comprises a driving member (231), a connecting rod group (232), a supporting member (233) and a bending abutting member (234); the driving member (231) and the connecting rod group (232) are mounted on the swing frame (22); the driving member (231) is connected to the connecting rod group (232); the connecting rod group (232) is connected to the supporting member (233); and the bending abutting member (234) is mounted on the supporting member (233).

5. The pipe bending machine head according to claim 4, characterized in that: The bending abutment member (234) is slidably connected to the support member (233); a first adjusting screw (235) is mounted on the support member (233); and the first adjusting screw (235) is connected to the bending abutment member (234).

6. The pipe bending machine head according to any one of claims 1 to 5, characterized in that: A guide roller (312) is installed on the sliding seat (31), and the guide roller (312) is connected to the supporting mold member (33).

7. The pipe bending machine head according to any one of claims 1 to 5, characterized in that: The mold assembly (3) comprises a second adjusting screw (35), wherein the second adjusting screw (35) is mounted on the sliding seat (31), and the second adjusting screw (35) is connected to the supporting seat (32).

8. The pipe bending machine head according to claim 4 or 5, characterized in that: The bent abutment member (234) has a first abutment surface (2341), and the support member (33) has a second abutment surface (332). When the swing frame (22) is not driven to move, the second abutment surface (332) and the first abutment surface (2341) are parallel to each other.

9. The pipe bending machine head according to claim 6, characterized in that: Two guide rollers (312) are provided, and the two guide rollers (312) are arranged adjacent to each other along the sliding direction of the supporting mold member (33).

10. The pipe bending machine head according to any one of claims 1 to 5, characterized in that: The sliding drive device (36) adopts a hydraulic cylinder.

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