Pipe bending mechanism

Abstract

The application discloses a pipe bending mechanism, which comprises a blanking fixing base, a blanking groove is arranged in the blanking fixing base, the blanking groove is through from top to bottom, and three groups of blanking rollers are arranged in the blanking groove, and each group of blanking rollers is provided with a plurality of blanking rollers arranged in a top-to-bottom mode, and the pipe to be bent is placed between two adjacent groups of blanking rollers.

Description

Technical Field

[0001] This invention relates to the field of bending technology, specifically a pipe bending mechanism. Background Technology

[0002] In existing technologies, pipe bending is a process that uses external force or molds to process straight pipes into pipes with specific angles and curvatures. It is widely used in fields such as machinery manufacturing, construction, automobiles, and aerospace. The key aspects of pipe bending involve multiple factors such as material properties, process parameters, mold design, equipment precision, and operating procedures.

[0003] There are many types of technical equipment for bending pipe fittings in the existing technology, including roller bending machines, cantilever bending machines, hydraulic bending machines, vertical bending machines, horizontal bending machines, and more complex CNC bending machines. Furthermore, there are many types of pipe fitting bending structures in the existing technology. For example, the "pipe fitting bending structure" disclosed in Publication (Announcement) No. CN203817120U uses annular grooves and semi-circular grooves to cooperate, allowing the straight pipe fitting to gradually deform within the curved, enclosed space. This ensures that the straight pipe fitting is subjected to uniform stress in all parts of the curved, enclosed space, preventing localized bulging at the bend and extending the service life of the exhaust pipe.

[0004] For example, the "Bending Device for Pipe Fittings" disclosed in Publication No. CN217528832U uses a bending drive component adapted to drive a turntable to rotate and perform bending operations on the pipe fittings. This ensures that the bent pipe will not flatten, guaranteeing product quality requirements.

[0005] However, the aforementioned pipe bending structures and existing pipe bending equipment still have certain drawbacks. The first is the positioning problem during pipe bending, especially for some horizontal bending equipment. The pipe needs to be positioned during bending and its position cannot be moved. Existing technologies require relatively complex positioning and fixing fixtures, which increases the overall cost of the equipment and the difficulty of use.

[0006] Secondly, there is the issue of the bending length of pipe fittings. The bending length of the pipe fitting end is usually different depending on the requirements. However, the bending equipment in the existing technology usually cannot effectively adjust the bending length, and even if the bending length can be adjusted, it can only be done with relatively complex tooling, which is not convenient.

[0007] The third issue is the cutting of pipe fittings. In particular, for vertical bending equipment, how to cut the pipe fittings after bending is a technical problem, and it is not easy to cut the bent pipe fittings.

[0008] Therefore, in order to solve the above problems, it is necessary to develop a pipe bending mechanism that is structurally sound and easy to use. Summary of the Invention

[0009] The purpose of this invention is to address the shortcomings of existing technologies by providing a pipe bending mechanism; the technical solution is as follows:

[0010] A pipe bending mechanism includes a feeding fixing seat, a feeding groove provided in the feeding fixing seat, the feeding groove being vertically connected, and three sets of feeding rollers installed in the feeding groove, each set of feeding rollers having several vertically arranged, and the pipe to be bent being placed between two adjacent sets of feeding rollers.

[0011] A reciprocating bending mechanism is installed on the lower left side of the feeding fixing seat. The reciprocating bending mechanism is arranged horizontally, and the bending main shaft of the reciprocating bending mechanism extends horizontally. A positioning sleeve is installed on the lower right side of the feeding fixing seat. The bending main shaft is inserted into the positioning sleeve and can move left and right within the positioning sleeve. The position of the bending main shaft corresponds to the position of the feeding fixing seat, so that the two tubes between the three sets of feeding rollers fall on the bending main shaft.

[0012] The bending spindle is also equipped with three vertical rods, and each rod end is equipped with a bending roller. The three bending rollers on the bending spindle correspond to the three sets of feeding rollers in the feeding trough. When the pipe falls on the bending spindle, it also falls between the three bending rollers. When the reciprocating bending mechanism drives the bending spindle to move to the left or right, the pipe is bent by the bending rollers.

[0013] Furthermore, the feeding rollers in the feeding trough are correspondingly embedded, and each group of feeding rollers has three evenly spaced rollers.

[0014] Furthermore, the feeding roller and the bending roller are the same size and shape, and the roller body surfaces of the feeding roller and the bending roller are provided with arc-shaped roller grooves, and the pipe is placed in the roller grooves accordingly.

[0015] Furthermore, two circular positioning lifting seats are also installed on the bending spindle of the reciprocating bending mechanism. The two positioning lifting seats are correspondingly arranged between the three bending rollers, and their positions correspond to the positions of the two pipes above. The two pipes fall on the positioning lifting seats.

[0016] Furthermore, a threaded rod is installed at the lower end of the positioning lifting seat, and a corresponding threaded hole is provided on the bending spindle. The threaded rod is installed in the threaded hole, and the height of the positioning lifting seat is adjusted by rotating the position of the threaded rod in the threaded hole.

[0017] Furthermore, a vertical pushing mechanism is also installed on the reciprocating bending mechanism and the positioning sleeve. The position of the vertical pushing mechanism is perpendicular to the position of the reciprocating bending mechanism and the positioning sleeve. Under the action of the vertical pushing mechanism, the reciprocating bending mechanism and the positioning sleeve can be driven to move forward or backward, thereby driving the bending spindle to move forward or backward, so that the bending spindle moves away from below the unloading fixed seat.

[0018] After the pipe falls onto the bending spindle, the reciprocating bending mechanism drives the bending spindle to move. After being bent by the bending rollers, the bending spindle is then moved forward or backward by the vertical moving mechanism. The bent pipe is then removed from the bending rollers and falls down accordingly.

[0019] Furthermore, a receiving frame is provided below the reciprocating bending mechanism, the positioning sleeve, and the bending spindle, and the pipe fittings that fall after being bent fall into the receiving frame accordingly.

[0020] Furthermore, both the reciprocating bending mechanism and the vertical pushing mechanism are configured as linearly moving electric push rod devices.

[0021] Beneficial effects: The present invention has the following beneficial effects:

[0022] 1) In this invention, two or more pipes can be bent at the same time. Multiple sets of feeding rollers can be set in the feeding trough, and multiple sets of bending rollers can be set on the reciprocating bending mechanism. Therefore, multiple pipes can be bent at the same time, effectively improving the bending efficiency of the pipes.

[0023] 2) In this invention, by setting a feeding groove in the feeding fixing seat and a feeding roller in the feeding groove, the feeding of the pipe can be conveniently achieved by relying on the gravity of the pipe, and the structure is reasonable.

[0024] 3) In this device, the bending spindle is set directly below the unloading fixed seat, corresponding to the unloading roller, which can realize the positioning of the pipe. The pipe is positioned by gravity, so there will be no movement or offset during the actual bending.

[0025] 4) This device is also equipped with an adjustable positioning and lifting seat on the bending spindle, which can adjust the length of the bent end of the pipe fitting, and the structure is reasonable.

[0026] 5) The device is reasonably designed by setting corresponding bending rollers on the bending spindle and using a reciprocating bending mechanism to bend multiple sets of pipes; at the same time, the vertical pushing mechanism is used to solve the problem of unloading the bent pipes, which is quite ingenious. Attached Figure Description

[0027] Figure 1 This is a structural diagram of the present invention;

[0028] Figure 2 for Figure 1 Sectional view of AA;

[0029] Figure 3 for Figure 1 BB section view;

[0030] Figure 4 for Figure 2 Position diagram of the main bending shaft after vertical movement;

[0031] The components include: 1. Feeding fixing seat; 2. Feeding groove; 3. Feeding roller; 4. Pipe fitting; 5. Reciprocating bending mechanism; 6. Bending spindle; 7. Positioning sleeve; 8. Vertical rod; 9. Bending roller; 10. Roller groove; 11. Lifting seat; 12. Threaded rod; 13. Threaded hole; 14. Vertical pushing mechanism; and 15. Receiving frame. Detailed Implementation

[0032] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. These embodiments are implemented based on the technical solutions of the present invention, and it should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0033] like Figure 1 As shown, a pipe bending mechanism includes a feeding fixing seat 1, a feeding groove 2 is provided in the feeding fixing seat 1, the feeding groove 2 is vertically connected, and three sets of feeding rollers 3 are also installed in the feeding groove 2. Each set of feeding rollers 3 is provided with several vertically connected rollers, and the pipe fitting 4 to be bent is placed between two adjacent sets of feeding rollers 3.

[0034] like Figure 2 As shown, a reciprocating bending mechanism 5 is installed on the lower left side of the feeding fixing seat 1. The reciprocating bending mechanism 5 is arranged horizontally, and the bending main shaft 6 of the reciprocating bending mechanism 5 extends horizontally. A positioning sleeve 7 is installed on the lower right side of the feeding fixing seat 1. The bending main shaft 6 is inserted into the positioning sleeve 7 and can move left and right within the positioning sleeve 7. The position of the bending main shaft 6 corresponds to the position of the feeding fixing seat 1, so that the two pipes 4 between the three sets of feeding rollers 3 fall on the bending main shaft 6.

[0035] like Figure 3 As shown, three vertical rods 8 are also installed on the bending spindle 6, and bending rollers 9 are installed at the ends of the rods 8. The three bending rollers 9 on the bending spindle 6 correspond to the three sets of feeding rollers 3 in the feeding trough 2. When the pipe 4 falls on the bending spindle 6, it also falls between the three bending rollers 9. When the reciprocating bending mechanism 5 drives the bending spindle 6 to move to the left or right, the pipe 4 is bent by the bending rollers 9.

[0036] The feeding rollers 3 in the feeding trough 2 are correspondingly embedded, and each set of feeding rollers 3 has three evenly spaced rollers.

[0037] The feeding roller 3 and the bending roller 9 have the same size and shape. The roller body surfaces of the feeding roller 3 and the bending roller 9 are provided with arc-shaped roller grooves 10, and the pipe 4 is placed in the roller grooves 10 accordingly.

[0038] Two circular positioning lifting seats 11 are also installed on the bending spindle 6 of the reciprocating bending mechanism 5. The two positioning lifting seats 11 are respectively arranged between the three bending rollers 9, and their positions correspond to the positions of the two pipe parts 4 above. The two pipe parts 4 fall on the positioning lifting seats 11.

[0039] Furthermore, a threaded rod 12 is installed at the lower end of the positioning lifting seat 11, and a corresponding threaded hole 13 is provided on the bending spindle 6. The threaded rod 12 is installed in the threaded hole 13, and the height of the positioning lifting seat 11 is adjusted by rotating the position of the threaded rod 12 in the threaded hole 13.

[0040] like Figure 4 As shown, a vertical pushing mechanism 14 is also installed on the reciprocating bending mechanism 5 and the positioning sleeve 7. The position of the vertical pushing mechanism 14 is perpendicular to the position of the reciprocating bending mechanism 5 and the positioning sleeve 7. Under the action of the vertical pushing mechanism 14, the reciprocating bending mechanism 5 and the positioning sleeve 7 can be driven to move forward or backward, thereby driving the bending spindle 6 to move forward or backward, so that the bending spindle 6 moves away from below the unloading fixed seat 1.

[0041] After the pipe fitting 4 falls onto the bending spindle 6, the reciprocating bending mechanism 5 drives the bending spindle 6 to move. After being bent by the bending roller 9, the bending spindle 6 is then moved forward or backward by the vertical moving mechanism. The bent pipe fitting 4 is disengaged from the bending roller 9, causing the bent pipe fitting 4 to fall down accordingly.

[0042] Below the reciprocating bending mechanism 5, the positioning sleeve 7, and the bending spindle 6, there is also a receiving frame 15, into which the bent pipe 4 falls.

[0043] Both the reciprocating bending mechanism 5 and the vertical pushing mechanism 14 are configured as linearly moving electric push rod devices.

[0044] The specific working principle and process of this device are as follows: This device is a vertical pipe bending mechanism. The feeding fixing seat is set vertically, and there is a vertically penetrating feeding groove inside. Three sets of feeding rollers are set in the feeding groove, one above the other. The surface of the feeding rollers is set with roller grooves. When the pipe is placed between two adjacent sets of feeding rollers, the pipe can roll down under the restriction of the feeding rollers on both sides. The position of the bending main shaft of the reciprocating bending mechanism below corresponds to the position of the pipe. After the pipe falls from above, it falls onto the bending main shaft. The bending main shaft is also equipped with a corresponding positioning lifting seat. The pipe falls onto the positioning lifting seat after falling. The bending main shaft is also equipped with bending rollers. The position of the bending rollers corresponds to the position of the feeding rollers above. Therefore, the pipe falls not only onto the positioning lifting seat, but also between the three sets of feeding rollers.

[0045] In this device, the bending spindle of the reciprocating bending mechanism extends laterally, with the other end installed in the positioning sleeve. Therefore, when the pipe falls onto the positioning lifting seat, the bending spindle can be moved left or right by the reciprocating bending mechanism. The bending roller on the bending spindle can then bend the lower end of the pipe to the left or right. Since the pipe is placed vertically downwards, it does not need to be fixed by tooling under its own weight. Furthermore, the positioning lifting seat itself can be raised and lowered, so the bending height of the lower end of the pipe can be adjusted. By adjusting the height of the positioning lifting seat, the length of the bent end can be adjusted accordingly, without the need for additional complex tooling. The structure is quite ingenious.

[0046] Furthermore, when the pipe is bent, it is actually installed in the roller grooves of the three bending rollers. At this time, the pipe needs to be unloaded. Since the pipe is in a bent state at this time, it is normally impossible to unload it from inside the bending rollers. The technical solution of this device is to set a vertical pushing mechanism at the vertical position of the reciprocating bending mechanism and the positioning sleeve.

[0047] like Figure 4 As shown, during actual operation, the reciprocating bending mechanism, the positioning sleeve, and the lateral bending spindle are pushed forward or backward by the vertical pushing mechanism, so that the bending spindle is pushed from directly below the unloading fixed seat to the front or rear side. Then, the bent workpiece is separated from the bending roller on the bending spindle, and the tube is pulled out from the bending roller. At this time, after the tube is released from the control of the bending roller, the tube naturally falls into the receiving frame, completing the falling of the tube.

[0048] After the pipe falls, the reciprocating bending mechanism is reset by the vertical pushing mechanism, so that the bending spindle moves to the bottom of the blanking fixing seat. Then, the bending of the pipe is achieved by the bending spindle and the reciprocating bending mechanism. The overall structure design is quite reasonable.

[0049] The above-described specific embodiments are merely preferred embodiments of the present invention and are not intended to limit the implementation of the present invention or the scope of the claims. All equivalent changes and modifications made in accordance with the scope of patent protection of the present invention should be included within the scope of the present invention patent application.

Claims

1. A pipe bending mechanism, characterized in that: Includes a feeding fixing seat (1), which is provided with a feeding groove (2) which is vertically connected, and three sets of feeding rollers (3) are installed in the feeding groove (2). Each set of feeding rollers (3) is provided with several vertically connected, and the pipe fittings (4) to be bent are placed between two adjacent sets of feeding rollers (3). A reciprocating bending mechanism (5) is installed on the lower left side of the feeding fixing seat (1). The reciprocating bending mechanism (5) is arranged horizontally, and the bending main shaft (6) of the reciprocating bending mechanism (5) extends horizontally. A positioning sleeve (7) is installed on the lower right side of the feeding fixing seat (1). The bending main shaft (6) is inserted into the positioning sleeve (7) and can move left and right within the positioning sleeve (7). The position of the bending main shaft (6) corresponds to the position of the feeding fixing seat (1), so that the two pipes (4) between the three sets of feeding rollers (3) fall on the bending main shaft (6). The bending spindle (6) is also equipped with three vertical rods (8), and each of the rods (8) is equipped with a bending roller (9). The three bending rollers (9) on the bending spindle (6) correspond to the three sets of feeding rollers (3) in the feeding groove (2). When the pipe (4) falls on the bending spindle (6), it also falls between the three bending rollers (9). When the reciprocating bending mechanism (5) drives the bending spindle (6) to move to the left or right, the pipe (4) is bent by the bending rollers (9). The reciprocating bending mechanism (5) and the positioning sleeve (7) are also equipped with a vertical pushing mechanism (14). The position of the vertical pushing mechanism (14) is perpendicular to the position of the reciprocating bending mechanism (5) and the positioning sleeve (7). Under the action of the vertical pushing mechanism (14), the reciprocating bending mechanism (5) and the positioning sleeve (7) can be driven to move forward or backward, thereby driving the bending spindle (6) to move forward or backward, so that the bending spindle (6) moves away from the bottom of the unloading fixed seat (1). After the pipe fitting (4) falls onto the bending spindle (6), the reciprocating bending mechanism (5) drives the bending spindle (6) to move. After being bent by the bending roller (9), the bending spindle (6) is moved forward or backward by the vertical moving mechanism. The bent pipe fitting (4) is disengaged from the bending roller (9), so that the bent pipe fitting (4) falls down accordingly.

2. The pipe bending mechanism according to claim 1, characterized in that: The feeding rollers (3) in the feeding trough (2) are correspondingly embedded, and each group of feeding rollers (3) has three evenly spaced rollers.

3. The pipe bending mechanism according to claim 2, characterized in that: The feeding roller (3) and bending roller (9) are the same size and shape. The roller body surfaces of the feeding roller (3) and bending roller (9) are provided with arc-shaped roller grooves (10), and the pipe (4) is placed in the roller grooves (10).

4. The pipe bending mechanism according to claim 1, characterized in that: The reciprocating bending mechanism (5) also has two circular positioning lifting seats (11) installed on the bending spindle (6). The two positioning lifting seats (11) are respectively set between the three bending rollers (9) and their positions correspond to the positions of the two pipes (4) above. The two pipes (4) fall on the positioning lifting seats (11). Furthermore, a threaded rod (12) is installed at the lower end of the positioning lifting seat (11), and a corresponding threaded hole (13) is provided on the bending spindle (6). The threaded rod (12) is installed in the threaded hole (13), and the height of the positioning lifting seat (11) is adjusted by rotating the position of the threaded rod (12) in the threaded hole (13).

5. A pipe bending mechanism according to claim 1, characterized in that: Below the reciprocating bending mechanism (5), positioning sleeve (7) and bending spindle (6), there is also a receiving frame (15), and the pipe fitting (4) that falls after being bent falls into the receiving frame (15).

6. A pipe bending mechanism according to claim 1, characterized in that: The reciprocating bending mechanism (5) and the vertical pushing mechanism (14) are both configured as linearly moving electric push rod devices.

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