Machine for drawing rod out of cylinder

Abstract

The utility model relates to the technical field of insertion and extraction of steel pipes, in particular to a rod extraction cylinder outlet machine which comprises a rack, a driving assembly arranged on the rack, a rod extraction assembly in transmission connection with the driving assembly and an inflation assembly. The rod drawing assembly comprises a pull rod and a silica gel head, one end of the pull rod is connected with the driving assembly, and the other end of the pull rod is fixedly connected with the silica gel head. A through inflation groove is formed in the pull rod in the length direction of the pull rod, and the inflation assembly communicates with the inflation groove in the pull rod. The driving assembly is used for driving the pull rod and the silica gel head to reciprocate in the length direction of the steel pipe so as to drive the steel pipe to be fed or pulled out to the corresponding set position. The pull rod sends the silica gel head into the steel pipe, then air is blown into the silica gel head from the air inflation groove through the air inflation assembly, the silica gel head is inflated to expand and extrudes the inner side wall of the steel pipe, when the pull rod pulls the silica gel head out, the silica gel head drives the steel pipe to be pulled out together under the action of friction force, full-automatic operation is achieved, time and labor are saved, and efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe plugging and pulling, in particular to a rod-pulling and cylinder-pulling machine. Background Art

[0002] During industrial production, steel pipes can be pre-buried within workpieces to form through-channel structures. Inserting and removing the pipes after processing typically relies on manual labor, which is difficult, time-consuming, and labor-intensive, resulting in low work efficiency. Utility Model Content

[0003] In order to solve the technical defects raised in the above background technology, the purpose of the present utility model is to provide a rod-pulling and cylinder-extracting machine.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A rod-pulling machine comprises a frame, a driving assembly arranged on the frame, a rod-pulling assembly and an inflation assembly in transmission connection with the driving assembly; the rod-pulling assembly comprises a pull rod and a silicone head, one end of the pull rod is connected to the driving assembly, and the other end of the pull rod is fixedly connected to the silicone head; the pull rod is provided with a through inflation groove along its length, and the inflation assembly is connected to the inflation groove in the pull rod for inflating the silicone head; when the silicone head is inflated, the outer peripheral side of the silicone head is interference-connected with the inner side wall of the steel pipe, and the driving assembly is used to drive the pull rod and the silicone head to reciprocate along the length direction of the steel pipe to drive the steel pipe in or out to the corresponding set position.

[0006] By adopting the above technical solution, the pull rod sends the silicone head into the steel pipe, and then blows air from the inflation groove into the silicone head through the inflation component. The silicone head inflates and expands and squeezes against the inner wall of the steel pipe. When the pull rod pulls the silicone head out, under the action of friction, the silicone head drives the steel pipe to be pulled out together. It is a fully automatic operation, saving time and effort and being more efficient.

[0007] Furthermore, when the silicone head is not inflated, the distance between the circumference of the silicone head and the inner wall of the steel pipe is set to 3mm-6mm, which facilitates the transportation of the silicone head into the steel pipe. The inflated silicone head can be interference-connected with the steel pipe, generating sufficient friction to drive the steel pipe to be pulled out.

[0008] Furthermore, the silicone head includes a connector, a silicone airbag and a sealing head. One end of the connector is located in the outlet of the inflation groove. The other end of the connector is sealed and connected to the end of the pull rod. The other end of the pull rod is sealed and connected to the silicone airbag, and the other end of the silicone airbag is sealed and connected to the sealing head. The silicone airbag and the pull rod are rigidly connected by a connector, which can provide pull-out resistance. The silicone airbag is set as a cylindrical structure, and the sealing head is set as a truncated cone structure. The side with a larger end face area of ​​the sealing head is sealed and connected to the silicone airbag, thereby improving the efficiency of the silicone head in inserting into the steel pipe.

[0009] Furthermore, the connector, the silicone airbag, and the sealing head are integrally formed, which improves processing efficiency, facilitates replacement, and improves operating efficiency.

[0010] Furthermore, a working platform, a working box arranged on the working platform, and a pushing cylinder are provided above the frame. Two guide rails are provided on the working platform along the direction of movement perpendicular to the pull rod, and the working box is slidably provided on the guide rails. The output shaft of the pushing cylinder is fixedly connected to the working box, which can improve work efficiency and realize the rapid docking of the silicone head and the steel pipe. The rod extraction assembly and the driving assembly are both arranged in the working box, which can play the role of dust prevention and noise reduction, protect the environment, and have higher safety performance.

[0011] Furthermore, the drive assembly includes a motor, a driving wheel, a driven wheel, a chain, and a connecting unit. The output shaft of the motor passes through the side wall of one end of the working box and is connected to the driving wheel. The driven wheel is arranged at the other end inside the working box. The driving wheel and the driven wheel are meshed with the chain. This simple structure and the meshed connection transmission are more stable, allowing for flexible start and stop, and improving stability and braking performance. One end of the connecting unit is fixedly connected to the chain, and the other end of the connecting unit is connected to the pull rod.

[0012] Furthermore, the connecting unit includes a plurality of chain plates fixed to the chain, a connecting block connected to the plurality of chain plates, and a fixing plate connected to the connecting block, which are arranged in a staggered manner, resulting in a more compact structure. The end of the pull rod away from the silicone head is fixed to the fixing plate.

[0013] Furthermore, two slide rails are spaced apart along the height of the inner sidewall of the work box, and the lengths of the two slide rails are arranged parallel to the lengths of the pull rods. Therefore, one end of the fixed plate is slidably connected to the slide rail, and the other end of the fixed plate is slidably connected to the other slide rail. The side of the fixed plate facing the chain is screwed to the connecting block, and a fixed block is protruding from the other side of the fixed plate, which is fixedly connected to the end of the pull rod. The sliding of the fixed plate on the two slide rails allows the two ends of the fixed plate to operate synchronously, ensuring the stability of the pull rod operation and the accuracy of directional control.

[0014] Furthermore, the drive assembly further includes a first sensor, a second sensor, and a third sensor spaced apart along the direction of movement of the pull rod. The first sensor, the second sensor, and the third sensor are all used to detect the depth to which the silicone head is embedded in the steel pipe driven by the pull rod, thereby improving control accuracy and operation efficiency, and facilitating equipment protection.

[0015] In summary, the beneficial effects of the present invention are:

[0016] The utility model sends the silicone head into the steel pipe through the pull rod, and then blows air from the inflation groove into the silicone head through the inflation component. The silicone head is inflated and squeezed against the inner wall of the steel pipe. When the pull rod pulls the silicone head out, under the action of friction, the silicone head drives the steel pipe to be pulled out together. The operation is fully automatic, saving time and effort and being more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the rod-pulling-out-cylinder machine of the present utility model.

[0018] Figure 2 It is a schematic diagram of the internal structure of an embodiment of the rod-pulling-out-cylinder machine of the present invention.

[0019] Figure 3 yes Figure 2 main view.

[0020] Figure 4 It is a structural schematic diagram of an embodiment of the silicone head of the rod-pulling-out-cylinder machine of the present invention.

[0021] Figure 5 It is an enlarged structural diagram of an embodiment of the connecting block and chain piece installation structure of the rod-pulling-out-cylinder machine of the present invention.

[0022] Description of reference numerals in the figures:

[0023] 1. Rod extraction machine; 2. Frame; 21. Working platform; 22. Working box; 221. Avoidance groove; 23. Guide rail; 24. Push cylinder; 25. Slide rail; 3. Driving assembly; 31. Motor; 32. Driving wheel; 33. Driven wheel; 34. Chain; 351. Chain plate; 352. Connecting block; 353. Fixing plate; 354. Fixing block; 36. First sensor; 37. Second sensor; 38. Third sensor; 4. Rod extraction assembly; 41. Pull rod; 411. Push plate; 42. Silicone head; 421. Connecting piece; 422. Silicone airbag; 423. Sealing head; 43. Sealing piece; 5. Steel pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0025] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which 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 operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0026] In the description of this utility model, if the word "several" or "several" is used, it means one or more, and "more" means two or more. "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the words "first," "second," and "third" is only for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, or implicitly indicating the number of the indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] The following is combined with Figure 1-5 , the embodiments of the utility model are further described in detail.

[0028] A rod extraction machine 1, such as Figure 1 、 Figure 2 、 Figure 3As shown, it includes a frame 2, a driving assembly 3 arranged on the frame 2, a rod-drawing assembly 4 that is transmission-connected to the driving assembly 3, and an inflation assembly. The rod-drawing assembly 4 includes a pull rod 41 and a silicone head 42. One end of the pull rod 41 is connected to the driving assembly 3, and the other end of the pull rod 41 is fixedly connected to the silicone head 42. The pull rod 41 is provided with a through inflation groove along its length. The inflation assembly is connected to the inflation groove in the pull rod 41 and is used to inflate the silicone head 42. When the silicone head 42 is inflated, the outer peripheral side of the silicone head 42 is interference-connected with the inner side wall of the steel pipe 5. The driving assembly 3 is used to drive the pull rod 41 and the silicone head 42 to reciprocate along the length direction of the steel pipe 5 to drive the steel pipe 5 to be fed in or pulled out to the corresponding set position.

[0029] Among them, the pull rod 41 sends the silicone head 42 into the steel pipe 5, and then blows air from the inflation tank into the silicone head 42 through the inflation component. The silicone head 42 inflates and expands and squeezes against the inner wall of the steel pipe 5. When the pull rod 41 pulls the silicone head 42 out, under the action of friction, the silicone head 42 drives the steel pipe 5 to be pulled out together. It is a fully automatic operation, which saves time and effort and is more efficient.

[0030] In this embodiment, when the silicone head 42 is not inflated, the spacing between the circumference of the silicone head 42 and the inner sidewall of the steel tube 5 is set to 3mm-6mm, which facilitates the delivery of the silicone head 42 into the steel tube 5. After inflation, the silicone head 42 can be interference-fitted with the steel tube 5, generating sufficient friction to drive the steel tube 5 out. Different silicone heads 42 can be replaced according to the actual inner diameter of the steel tube 5. The spacing between the circumference of the silicone head 42 and the inner sidewall of the steel tube 5 can be set to 5mm, which facilitates the rapid insertion of the silicone head 42 into the steel tube 5 and ensures the friction generated by the inflation pressure between the two, allowing the steel tube 5 to be smoothly pulled out.

[0031] In some embodiments, please refer to Figure 3 、 Figure 4 The silicone head 42 includes a connector 421, a silicone airbag 422 and a sealing head 423. One end of the connector 421 is located in the outlet of the inflation groove. The other end of the connector 421 is sealed and connected to the end of the pull rod 41. The other end of the pull rod 41 is sealed and connected to the silicone airbag 422, and the other end of the silicone airbag 422 is sealed and connected to the sealing head 423. The silicone airbag 422 and the pull rod 41 are rigidly connected by the connector 421, which can provide pull-out resistance. The silicone airbag 422 is set to a cylindrical structure, and the sealing head 423 is set to a truncated cone structure. The side with a large end face area of ​​the sealing head 423 is sealed and connected to the silicone airbag 422, thereby improving the efficiency of the silicone head 422 being inserted into the steel pipe 5.

[0032] Specifically, the connecting piece 421, the silicone airbag 422, and the sealing head 423 are integrally formed, which improves processing efficiency, facilitates replacement, and improves operating efficiency.

[0033] The end of the connector 421 located inside the tie rod 41 is also fitted with a seal 43, enhancing the seal between the connector 421 and the tie rod 41 and effectively preventing air leakage. Furthermore, an annular push plate 411 can be protruding from the end of the tie rod 41. The end surface area of ​​the push plate 411 is equal to or greater than the end surface area of ​​the steel tube 5. The push plate 411 can be used to push the steel tube 5 into the desired position, allowing the tie rod 41 to be removed.

[0034] In this embodiment, please refer to Figure 1 A working platform 21, a working box 22 arranged on the working platform 21, and a pushing cylinder 24 are provided above the frame 2. Two guide rails 23 are provided on the working platform 21 along the direction of movement perpendicular to the pull rod 41, and the working box 22 is slidably provided on the guide rails 23. The output shaft of the pushing cylinder 24 is fixedly connected to the working box 22, which can improve work efficiency and realize the rapid docking of the silicone head 42 and the steel pipe 5. The rod drawing assembly 4 and the driving assembly 3 are both arranged in the working box 22, which can play a role in dust prevention and noise reduction, protect the environment, and have higher safety performance. The interior of the working box 22 is hollow, and a avoidance groove 221 is provided at one end thereof facing the steel pipe 5. The pull rod 41 is arranged opposite to the avoidance groove 221, which is convenient for the pull rod 41 to enter and exit.

[0035] In some embodiments, please refer to Figure 2 、 Figure 3 The drive assembly 3 includes a motor 31, a driving wheel 32, a driven wheel 33, a chain 34, and a connecting unit. The output shaft of the motor 31 passes through the sidewall of one end of the work box 22 and connects to the driving wheel 32. The driven wheel 33 is located at the other end of the work box 22. The driving wheel 32 and the driven wheel 33 are meshed with a chain 34. This simple structure and meshing connection provide a more stable transmission, allowing for flexible start and stop, and improved stability and braking performance. One end of the connecting unit is fixedly connected to the chain 34, and the other end is connected to the pull rod 41.

[0036] Please refer to Figure 2 、 Figure 3 、 Figure 5 The connecting unit includes multiple chain plates 351 fixed to the chain 34, a connecting block 352 connected to the multiple chain plates 351, and a fixing plate 353 connected to the connecting block 352. These are staggered and arranged for a more compact structure. The end of the pull rod 41 away from the silicone head 42 is fixed to the fixing plate 353. The connecting plate is configured as an L-shaped structure, which can increase the connection area between the connecting plate and the fixing plate 353, improving stability, load-bearing strength, and the firmness of the connection.

[0037] To improve the precision of the reciprocating motion of the pull rod 41, two slide rails 25 are spaced apart along the height direction on the inner sidewall of the work box 22. The length direction of the two slide rails 25 is arranged parallel to the length direction of the pull rod 41. Therefore, one end of the fixed plate 353 is slidably connected to the slide rail 25, and the other end of the fixed plate 353 is slidably connected to the other slide rail 25. The side of the fixed plate 353 facing the chain 34 is screwed to the connecting block 352. The other side of the fixed plate 353 is protruding from a fixed block 354, which is fixedly connected to the end of the pull rod 41. The sliding of the fixed plate 353 on the two slide rails 25 allows the two ends of the fixed plate 353 to operate synchronously, ensuring the stability of the operation of the pull rod 41 and the precision of directional control.

[0038] Please refer to Figure 3 The drive assembly 3 further includes a first sensor 36, a second sensor 37, and a third sensor 38 spaced apart along the direction of movement of the pull rod 41. The first sensor 36, the second sensor 37, and the third sensor 38 are all used to detect the depth to which the silicone head 42 driven by the pull rod 41 is embedded in the steel pipe 5, thereby improving control accuracy and operation efficiency and facilitating equipment protection.

[0039] The first sensor 36, the second sensor 37 and the third sensor 38 are arranged in sequence close to the steel pipe 5. The first sensor 36 is used to limit the maximum distance that the pull rod 41 can run when it is pulled out. The distance between the second sensor 37 and the third sensor 38 is equal to the length of the rod body of the pull rod 41. The third sensor 38 is used to control the maximum depth of the pull rod 41 penetrating into the steel pipe 5. The distance that the pull rod 41 penetrates into the steel pipe 5, the inflation amount of the silicone head 42, etc. can all be uniformly controlled by the system. The inflation component is not drawn in the figure. The inflation component is connected to the pull rod 41 through an inflation pipe and a joint to inflate the silicone head 42.

[0040] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A rod extraction machine (1), characterized in that: The invention comprises a frame (2), a driving assembly (3) arranged on the frame (2), a rod-drawing assembly (4) connected to the driving assembly (3) in a transmission manner, and an inflation assembly; the rod-drawing assembly (4) comprises a pull rod (41) and a silicone head (42), one end of the pull rod (41) is connected to the driving assembly (3), and the other end of the pull rod (41) is fixedly connected to the silicone head (42); the pull rod (41) is provided with a through inflation groove along its length direction, and the inflation assembly is connected to the inflation groove in the pull rod (41) and is used to inflate the silicone head (42); when the silicone head (42) is inflated, the outer peripheral side of the silicone head (42) is interference-connected with the inner side wall of the steel pipe (5), and the driving assembly (3) is used to drive the pull rod (41) and the silicone head (42) to reciprocate along the length direction of the steel pipe (5) to drive the steel pipe (5) to be fed in or pulled out to the corresponding set position.

2. The rod-pulling machine (1) according to claim 1, characterized in that: When the silicone head (42) is not inflated, the distance between the circumference of the silicone head (42) and the inner wall of the steel pipe (5) is set to 3mm-6mm.

3. The rod-pulling machine (1) according to claim 1, characterized in that: The silicone head (42) includes a connector (421), a silicone airbag (422) and a sealing head (423); one end of the connector (421) is located in the outlet of the inflation groove; the other end of the connector (421) is sealed and connected to the end of the pull rod (41); the other end of the pull rod (41) is sealed and connected to the silicone airbag (422), and the other end of the silicone airbag (422) is sealed and connected to the sealing head (423); the silicone airbag (422) is set to a cylindrical structure, and the sealing head (423) is set to a truncated cone structure, and the side with a larger end face area of ​​the sealing head (423) is sealed and connected to the silicone airbag (422).

4. The rod-pulling machine (1) according to claim 3, characterized in that: The connecting piece (421), the silicone airbag (422), and the sealing head (423) are integrally formed.

5. The rod-pulling machine (1) according to claim 1, characterized in that: A working platform (21), a working box (22) arranged on the working platform (21), and a pushing cylinder (24) are arranged above the frame (2); two guide rails (23) are arranged on the working platform (21) along the movement direction perpendicular to the pull rod (41), and the working box (22) is slidably arranged on the guide rails (23); the output shaft of the pushing cylinder (24) is fixedly connected to the working box (22); the rod drawing assembly (4) and the driving assembly (3) are both arranged in the working box (22).

6. The rod-pulling machine (1) according to claim 5, characterized in that: The driving assembly (3) includes a motor (31), a driving wheel (32), a driven wheel (33), a chain (34) and a connecting unit; the output shaft of the motor (31) passes through the side wall of one end of the working box (22) and is connected to the driving wheel (32); the driven wheel (33) is arranged at the other end inside the working box (22); the driving wheel (32) and the driven wheel (33) are meshed and connected with the chain (34); one end of the connecting unit is fixedly connected to the chain (34), and the other end of the connecting unit is connected to the pull rod (41).

7. The rod-pulling machine (1) according to claim 6, characterized in that: The connecting unit comprises a plurality of chain plates (351) fixed on the chain (34), a connecting block (352) connected to the plurality of chain plates (351), and a fixing plate (353) connected to the connecting block (352); one end of the pull rod (41) away from the silicone head (42) is fixed on the fixing plate (353).

8. The rod-pulling-out-cylinder machine (1) according to claim 7, characterized in that: Two slide rails (25) are also spaced apart on the inner side wall of the working box (22) along the height direction, and the length direction of the two slide rails (25) is arranged parallel to the length direction of the pull rod (41); so one end of the fixed plate (353) is slidably connected to the slide rail (25), and the other end of the fixed plate (353) is slidably connected to the other slide rail (25), and the side of the fixed plate (353) facing the chain (34) is screwed to the connecting block (352), and a fixed block (354) is protruding from the other side of the fixed plate (353), and the fixed block (354) is fixedly connected to the end of the pull rod (41).

9. The rod-pulling machine (1) according to claim 1, characterized in that: The driving assembly (3) further includes a first sensor (36), a second sensor (37) and a third sensor (38) spaced apart along the direction of movement of the pull rod (41); the first sensor (36), the second sensor (37) and the third sensor (38) are all used to detect the depth to which the pull rod (41) drives the silicone head (42) to be buried in the steel pipe (5).

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