Telescopic turnover mechanism for long U-shaped pipe bending machine

Abstract

The utility model provides a telescopic turnover mechanism for a long U-shaped pipe bender, which comprises a telescopic component capable of rotating relative to an equipment base, the telescopic component consists of a plurality of telescopic frames which are sequentially connected in a sliding manner, and a driving structure capable of pushing adjacent telescopic frames to be close to or far away from each other is arranged between the adjacent telescopic frames. The telescopic frame is connected with a plurality of holding frames capable of sliding relative to the telescopic frame, and each holding frame is correspondingly provided with a material guiding pipe for the pipe fitting to pass through. The telescopic assembly is provided with an adjusting and positioning structure capable of pushing the retainers to be far away from each other or close to each other in the extending or shortening process of the telescopic assembly. The telescopic turnover mechanism for the long U-shaped pipe bending machine aims at overcoming the defects in the prior art, and is flexible, accurate, stable and efficient for pipe fittings.

Description

Technical Field

[0001] The utility model specifically relates to a telescopic turning mechanism for a long U-tube bending machine. Background Art

[0002] In modern industrial production, especially in the field of pipe manufacturing and processing, long U-shaped pipe bending machines are an indispensable part, which directly affects the precision, efficiency and cost control of pipe forming. Traditional long U-shaped pipe bending machines often have certain limitations in the feeding process, especially when dealing with pipes of different sizes and lengths. The fixed feeding mechanism is difficult to adapt flexibly, which not only limits production efficiency, but also in the process of bending pipes, if the pipes cannot be bent while being stretched, it is easy to cause deformation and bending of other parts of the pipes, affecting the straightness of the pipes and the quality of the finished products, especially for slender pipes.

[0003] In order to solve the above problems, there have been many attempts in the market, such as manually adjusting the feeding distance, but this is not only cumbersome to operate, but also difficult to ensure the consistency and accuracy of each feeding. The author of the utility model has previously developed a long U-shaped pipe bending machine, with reference patent number CN201711173811.1, named a long U-shaped pipe bending machine, and patent number CN201711173760.2, named a method for bending a pipe with a long U-shaped pipe bending machine. This traditional long U-shaped pipe bending machine cannot hold and support long pipes. If the pipe is long, it is easy to cause deformation of the pipe during the bending process, affecting the straightness.

[0004] The utility model is produced based on the above-mentioned shortcomings. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and provide a flexible, accurate, stable and efficient retractable turning mechanism for a long U-tube bending machine for pipe fittings.

[0006] The utility model is realized by the following technical solutions:

[0007] A telescopic flip mechanism for a long U-shaped pipe bending machine includes a telescopic component that can rotate relative to a base of the equipment, the telescopic component is composed of a plurality of telescopic frames that are slidably connected in sequence, and a driving structure that can push each other to be closer or farther away is provided between adjacent telescopic frames, thereby enabling the telescopic component to be extended or shortened, the telescopic frame is connected to a plurality of retaining frames that can slide relative to it, each retaining frame is correspondingly provided with a material guide channel for pipe fittings to pass through, and the telescopic component is provided with an adjustment and positioning structure that can push each retaining frame to be away from or closer to each other during the extension or shortening process.

[0008] As described above, the telescopic flip mechanism for the long U-tube bender comprises a telescopic assembly consisting of a fixed frame connected to the equipment base, a first telescopic frame slidably connected to the fixed frame, and a second telescopic frame slidably connected to the first telescopic frame.

[0009] As described above, the retractable flipping mechanism for a long U-tube bender, the adjustment and positioning structure is a scissors-fork mechanism, the head end of the scissors-fork mechanism is connected to a fixed frame, and the tail end of the scissors-fork mechanism is connected to a second telescopic frame, the retaining frame is rotatably connected to the scissors-fork mechanism, and the retaining frame is equidistantly distributed on the scissors-fork mechanism along the telescopic direction of the scissors-fork mechanism.

[0010] The telescopic flipping mechanism for a long U-shaped pipe bending machine as described above, the driving structure includes a first screw sleeve rotatably connected to a first telescopic frame, the fixed frame is connected to a first screw rod which is inserted into the first screw sleeve and can move axially when the first screw sleeve rotates, the driving structure also includes a second screw rod rotatably connected to the first telescopic frame, the second telescopic frame is connected to a second screw sleeve which is sleeved on the second screw rod and can move axially when the second screw rod rotates, and the driving structure also includes a driving member which is arranged on the second telescopic frame and can drive the first screw sleeve and the second screw rod to rotate.

[0011] As described above, the retractable flipping mechanism for a long U-tube bending machine, the driving member is connected to the first pulley and can drive the first pulley to rotate, the first screw rod sleeve is connected to the second pulley, the second screw rod is connected to the third pulley, and the first pulley, the second pulley and the third pulley are sleeved with a transmission belt.

[0012] As described above, the telescopic flip mechanism for a long U-tube bender has a top of the telescopic frame provided with a guide rib arranged along the telescopic direction of the telescopic assembly, and a bottom of the retaining frame provided with a clamping groove clamped on the guide rib, so that the telescopic frame can slide along the telescopic direction of the telescopic assembly.

[0013] As described above, the retractable flip mechanism for a long U-tube bending machine is provided with a first side slide groove on the fixed frame, the first telescopic frame is provided with a first side convex rib arranged along the telescopic direction of the telescopic component and inserted into the first side slide groove, the first telescopic frame is provided with a second side slide groove, and the second telescopic frame is provided with a second side convex rib arranged along the telescopic direction of the telescopic component and inserted into the second side slide groove, so that adjacent telescopic frames can slide with each other.

[0014] As described above, the retractable flipping mechanism for a long U-tube bender has a first auxiliary retaining frame on the fixed frame, a second auxiliary retaining frame on the second telescopic frame, a head end of the scissors mechanism rotatably connected to the first auxiliary retaining frame, and a tail end of the scissors mechanism rotatably connected to the second auxiliary retaining frame.

[0015] As described above, in the retractable flipping mechanism for a long U-tube bender, the retaining frame is connected to the hinged position of the scissor arms of the scissor mechanism.

[0016] The retaining frame is provided with a material guiding pipe, the inner cavity of the material guiding pipe constitutes the material guiding channel, and both ends of the material guiding pipe are provided with trumpet-shaped material guiding sections.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. When the telescopic turning mechanism for the long U-tube bending machine of the utility model is adapted to pipes of different sizes, the driving structure drives the telescopic assembly to extend or shorten. At the same time, the positioning structure is adjusted to push each retainer away from or close to each other, so that the distribution range of the retainer is expanded or reduced along the telescopic direction of the telescopic assembly. When adapting to pipes of different lengths, it can maintain good support at different length positions of the pipe. Under the premise of not affecting the normal transportation of the pipe, it ensures that the entire pipe will not be bent or damaged during the bending process, ensures the straightness of the pipe, has good flexibility, and the whole process can be fully mechanized, with a stable structure, improved processing accuracy, reduced manual replacement operations, and improved production efficiency;

[0019] 2. The adjustment and positioning structure of the utility model adopts a scissor mechanism, which improves the stability of the structure and the production efficiency, and can stably and accurately make each cage spread out or close to each other at equal distances;

[0020] 3. The driving structure of the utility model can simultaneously drive the first telescopic frame to slide relative to the fixed frame and the second telescopic frame to slide relative to the first telescopic frame through one driving member, and ingeniously achieves precise and equidistant sliding through a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a simplified structural diagram of the long U-tube bending machine of the utility model;

[0022] Figure 2 It is a structural schematic diagram of a retractable flipping mechanism for a long U-tube bending machine of the utility model;

[0023] Figure 3 It is an exploded schematic diagram of the telescopic flipping mechanism for the long U-tube bending machine of the utility model;

[0024] Figure 4 It is a partial structural decomposition of the telescopic flip mechanism of the utility model for the long U-tube bending machine Figure 1 ;

[0025] Figure 5It is a partial structural decomposition of the telescopic flip mechanism of the utility model for the long U-tube bending machine Figure 2 . DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings:

[0027] The directions described in the specification of the present invention, such as "up", "down", "left", "right", "front", "rear", etc., are based on the directions of the accompanying drawings and are intended to facilitate description of the relationship between the various components. In this embodiment, the upstream of the long tube conveying is the front, the downstream of the long tube conveying is the rear, and the vertical direction of the long tube conveying direction is the left and right direction. It does not indicate a unique or absolute positional relationship between the various components, but is only one implementation method of the utility model and is not a limitation on its implementation method.

[0028] This embodiment provides a retractable flip mechanism for a long U-tube bender, such as Figure 1 As shown, it includes a telescopic assembly 1 that can rotate relative to the equipment base A. The equipment base A is provided with a flip driving motor A1 for driving the fixing frame 11 of the telescopic assembly 1 to flip relative to the equipment base A, so that the telescopic assembly 1 can flip relative to the equipment base A, thereby realizing the pipe bending function. Figures 2 to 5 As shown, the telescopic assembly 1 is composed of a plurality of telescopic frames 10 that are slidably connected in sequence, and a driving structure 2 that can push each other closer or farther away is provided between adjacent telescopic frames 10, so that the telescopic assembly 1 can be extended or shortened, and a plurality of retaining frames 3 that can slide relative to the telescopic frames 10 are connected, and each retaining frame 3 is correspondingly provided with a guide pipe 31 for the pipe to pass through, as shown in FIG. Figure 2As shown, the inner cavity of the guide tube 31 constitutes a guide channel 300 for the pipe to pass through. Of course, in order to simplify the structure and facilitate production, a through hole can be opened on the retainer 3 to constitute the guide channel 300, or a groove can be opened on the retainer 3 to constitute the guide channel 300. In order to make the pipe guide smooth, trumpet-shaped guide sections 311 can also be opened at both ends of the guide tube 31. That is, each retainer 3 is provided with a corresponding number of guide tubes 31, and the guide tubes 31 on different retainers 3 are aligned. The telescopic assembly 1 is provided with an adjustment and positioning structure 4 that can push each retainer 3 away from or close to each other during its extension or shortening. When in use, the pipe passes through the guide tubes 31 on each retainer 3 at a time to realize the transportation of the pipe material and transport it to the bending station; when bending the pipe, the telescopic assembly 1 is flipped, and the entire pipe follows the telescopic assembly 1 to flip; when adapting to pipes of different sizes, the telescopic assembly 1 is driven to extend or shorten by the driving structure 2. or shortened, and at the same time, the positioning structure 4 is adjusted to push the various retainers 3 away from or close to each other, so that the distribution range of the retainers 3 is expanded or reduced along the telescopic direction of the telescopic component 1. When adapting to pipes of different lengths, it can maintain good support at different length positions of the pipes. Under the premise of not affecting the normal transportation of the pipes, it is ensured that the entire pipe will not be bent or damaged during the bending process, the straightness of the pipe is guaranteed, and it has good flexibility. Moreover, the whole process can be fully mechanized, the structure is stable, the processing accuracy is improved, the manual replacement operation is reduced, and the production efficiency is improved.

[0029] like Figure 5 As shown, the present embodiment adopts three telescopic frames 10 to form the telescopic assembly 1, namely, the three telescopic frames 10 of the fixed frame 11, the first telescopic frame 12 and the second telescopic frame 13. Of course, considering the actual production needs, two telescopic frames 10 can be set, or four or more telescopic frames 10 can be set.

[0030] As a preference, Figure 4As shown, the adjustment and positioning structure 4 is a scissor mechanism. The scissor mechanism can adopt, for example, the patented structural scheme of the patent number CN201820586860.1, which is named a scissor arm reinforcement structure of a scissor lifting mechanism, or the patented structural scheme of the patent number CN201320096293.9, which is named a scissor rod and a scissor mechanism made of the scissor mechanism. The scissor mechanism is a simple and effective mechanical device, which is mainly used to realize the conversion from linear motion to linear motion, and is particularly suitable for lifting and lowering heavy objects. Its basic structure is two or more groups of crossed connecting rods, also known as the scissor arms of the scissor mechanism, which are similar in shape to the blades of scissors, hence the name scissor mechanism. These connecting rods are usually made of metal materials, such as rectangular steel pipes or steel plates, to ensure sufficient strength and stability. The head end is connected to the fixed frame 11, and the tail end of the scissor mechanism is connected to the second telescopic frame 13. The retaining frame 3 is rotatably connected to the scissor mechanism, and the retaining frame 3 is equidistantly distributed on the scissor mechanism along the telescopic direction of the scissor mechanism. Preferably, the retainer 3 can be connected to the hinged position of the scissor arm of the scissor mechanism to simplify the structure, improve the stability of the structure, and improve production efficiency. Of course, the retainer 3 can also be connected to the scissor arm, and it is only necessary for the retainer 3 to be rotatably connected to the scissor arm. Through the above structure, each retainer 3 can be stably and accurately spread out or approached at equal distances. Of course, it is also possible to use a differential mechanism instead of a scissor mechanism to achieve this.

[0031] As a preference, Figure 5 As shown, the driving structure 2 includes a first screw sleeve 21 rotatably connected to the first telescopic frame 12, the fixed frame 11 is connected with a first screw 22 that is penetrated by the first screw sleeve 21 and can move axially when the first screw sleeve 21 rotates, the driving structure 2 also includes a second screw 23 rotatably connected to the first telescopic frame 12, the second telescopic frame 13 is connected with a second screw sleeve 24 that is sleeved on the second screw 23 and can move axially when the second screw 23 rotates, the driving structure 2 also includes a driving member 25 that is arranged on the second telescopic frame 13 and can drive the first screw sleeve 21 and the second screw 23 to rotate, the driving member 25 can adopt a general motor or a rotary cylinder, so that the first telescopic frame 12 can be driven to slide relative to the fixed frame 11 and the second telescopic frame 13 can be driven to slide relative to the first telescopic frame 12 by the same driving member 25, and precise and equidistant sliding can be cleverly achieved through a simple structure. Of course, the driving structure 2 can also adopt other structures, such as gear transmission.

[0032] In more detail, Figure 5As shown, the driving member 25 is connected to the first pulley 26 and can drive the first pulley 26 to rotate, the first screw sleeve 21 is connected to the second pulley 27, the second screw 23 is connected to the third pulley 28, and the first pulley 26, the second pulley 27 and the third pulley 28 are provided with a transmission belt 29.

[0033] In more detail, Figure 3 and Figure 4 As shown, the top of the telescopic frame 10 is provided with a guide rib 101 arranged along the telescopic direction of the telescopic component 1, and the bottom of the retaining frame 3 is provided with a clamping groove 32 clamped on the guide rib 101, so that the telescopic frame 10 can slide along the telescopic direction of the telescopic component 1.

[0034] In more detail, Figure 3 and Figure 5 As shown, the fixed frame 11 is provided with a first side groove 111, the first telescopic frame 12 is provided with a first side convex rib 121 arranged along the telescopic direction of the telescopic component 1 and inserted into the first side groove 111, the first telescopic frame 12 is provided with a second side groove 122, and the second telescopic frame 13 is provided with a second side convex rib 131 arranged along the telescopic direction of the telescopic component 1 and inserted into the second side groove 122, so that adjacent telescopic frames 10 can slide with each other.

[0035] In more detail, Figure 4 As shown, the fixed frame 11 is provided with a first auxiliary retaining frame 5, the second telescopic frame 13 is provided with a second auxiliary retaining frame 6, the head end of the scissors mechanism is rotatably connected to the first auxiliary retaining frame 5, and the tail end of the scissors mechanism is rotatably connected to the second auxiliary retaining frame 6. Of course, the first auxiliary retaining frame 5 and the second auxiliary retaining frame 6 can be provided with a material guide tube 31.

[0036] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A retractable turning mechanism for a long U-tube bending machine, characterized in that: The invention comprises a telescopic assembly (1) which can rotate relative to a base of the equipment, the telescopic assembly (1) being composed of a plurality of telescopic frames (10) which are slidably connected in sequence, a driving structure (2) which can push the adjacent telescopic frames (10) to move closer to or farther from each other is provided between adjacent telescopic frames (10), thereby enabling the telescopic assembly (1) to extend or shorten, the telescopic frames (10) being connected to a plurality of retaining frames (3) which can slide relative to the telescopic frames, each retaining frame (3) being correspondingly provided with a material guide channel (300) for pipes to pass through, and the telescopic assembly (1) being provided with an adjusting positioning structure (4) which can push the retaining frames (3) to move away from or closer to each other during the process of extending or shortening the telescopic frame.

2. The retractable turning mechanism for a long U-tube bending machine according to claim 1, characterized in that: The telescopic assembly (1) is composed of a fixed frame (11) connected to the equipment base, a first telescopic frame (12) slidably connected to the fixed frame (11), and a second telescopic frame (13) slidably connected to the first telescopic frame (12).

3. The retractable turning mechanism for a long U-tube bender according to claim 2 is characterized in that: The adjustment and positioning structure (4) is a scissor-type mechanism, the head end of the scissor-type mechanism is connected to the fixed frame (11), and the tail end of the scissor-type mechanism is connected to the second telescopic frame (13), the retaining frame (3) is rotatably connected to the scissor-type mechanism, and the retaining frame (3) is equidistantly distributed on the scissor-type mechanism along the telescopic direction of the scissor-type mechanism.

4. The retractable turning mechanism for a long U-tube bender according to claim 2 is characterized in that: The driving structure (2) comprises a first screw sleeve (21) rotatably connected to the first telescopic frame (12); the fixed frame (11) is connected with a first screw (22) which is inserted into the first screw sleeve (21) and can move axially when the first screw sleeve (21) rotates; the driving structure (2) further comprises a second screw (23) rotatably connected to the first telescopic frame (12); the second telescopic frame (13) is connected with a second screw sleeve (24) which is sleeved on the second screw (23) and can move axially when the second screw (23) rotates; the driving structure (2) further comprises a driving member (25) which is arranged on the second telescopic frame (13) and can drive the first screw sleeve (21) and the second screw (23) to rotate.

5. The retractable turning mechanism for a long U-tube bending machine according to claim 4, characterized in that: The driving member (25) is connected to a first pulley (26) and is capable of driving the first pulley (26) to rotate; the first screw rod sleeve (21) is connected to a second pulley (27); the second screw rod (23) is connected to a third pulley (28); and a transmission belt (29) is sleeved on the first pulley (26), the second pulley (27) and the third pulley (28).

6. The retractable turning mechanism for a long U-tube bender according to claim 1, characterized in that: The top of the telescopic frame (10) is provided with a guide convex rib (101) arranged along the telescopic direction of the telescopic assembly (1), and the bottom of the retaining frame (3) is provided with a clamping groove (32) clamped on the guide convex rib (101), so that the telescopic frame (10) can slide along the telescopic direction of the telescopic assembly (1).

7. The retractable turning mechanism for a long U-tube bender according to claim 2, characterized in that: The fixed frame (11) is provided with a first side slide groove (111), the first telescopic frame (12) is provided with a first side convex rib (121) arranged along the telescopic direction of the telescopic assembly (1) and inserted into the first side slide groove (111), the first telescopic frame (12) is provided with a second side slide groove (122), and the second telescopic frame (13) is provided with a second side convex rib (131) arranged along the telescopic direction of the telescopic assembly (1) and inserted into the second side slide groove (122), so that adjacent telescopic frames (10) can slide relative to each other.

8. The retractable turning mechanism for a long U-tube bender according to claim 3 is characterized in that: The fixed frame (11) is provided with a first auxiliary retaining frame (5), the second telescopic frame (13) is provided with a second auxiliary retaining frame (6), the head end of the scissor mechanism is rotatably connected to the first auxiliary retaining frame (5), and the tail end of the scissor mechanism is rotatably connected to the second auxiliary retaining frame (6).

9. The retractable turning mechanism for a long U-tube bender according to claim 3, characterized in that: The retaining frame (3) is connected to the hinged position of the scissor arms of the scissor mechanism.

10. The retractable turning mechanism for a long U-tube bender according to claim 1, characterized in that: The retaining frame (3) is provided with a material guide tube (31), the inner cavity of the material guide tube (31) constitutes the material guide channel (300), and both ends of the material guide tube (31) have trumpet-shaped material guide sections (311).

Images