Automatic conveying and pushing device for steel wire mesh framework plastic composite pipe

Abstract

The invention relates to the technical field of pipe conveying, in particular to a steel wire mesh framework plastic composite pipe automatic conveying and pushing device which comprises a base and a pipe body, the upper end of the base is rotationally connected with two first rods through four supports, and the side walls of the two first rods are both fixedly connected with conveying rollers; the side walls of the two conveying rollers are jointly connected with a conveying belt, and one support is fixedly connected with a first motor for driving the first rod to rotate. And the centering mechanism comprises a plurality of U-shaped plates fixedly connected to the side wall of the conveying belt, supporting plates are fixedly connected to the inner bottoms of the U-shaped plates, and balance plates are rotationally connected to the upper ends of the supporting plates. The U-shaped plates are arranged, the inner bottoms of the U-shaped plates are in an arc shape, a pipe body can automatically enter the inner bottoms of the two U-shaped plates, the pipe body is kept in a horizontal state in the conveying process, the centering mechanism, the driving mechanism and the triggering mechanism are arranged, and the pipe body can be automatically centered.

Description

Technical Field

[0001] The invention relates to the technical field of pipe transmission, and in particular to an automatic transmission and pushing device for a steel wire mesh skeleton plastic composite pipe. Background Art

[0002] Wire mesh skeleton plastic composite pipe is a new type of improved steel skeleton plastic composite pipe.

[0003] At present, after the production of wire mesh skeleton plastic composite pipes, in order to facilitate the subsequent processing, such as cutting and grinding the two ends of the wire mesh skeleton plastic composite pipes, the wire mesh skeleton plastic composite pipes are conveyed one by one through a conveyor belt. However, when the wire mesh skeleton plastic composite pipes are placed on the conveyor belt, the position of the wire mesh skeleton plastic composite pipes will change, that is, the wire mesh skeleton plastic composite pipes are not necessarily in a horizontal state, and may also be in an inclined state, resulting in inconvenience in the subsequent processing of the wire mesh skeleton plastic composite pipes. At the same time, when the wire mesh skeleton plastic composite pipes are transported on the conveyor belt, as the conveyor belt shakes during the movement, the wire mesh skeleton plastic composite pipes may not be centered along the conveyor belt, which affects the subsequent processing position of the wire mesh skeleton plastic composite pipes. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose an automatic transmission and pushing device for a steel wire mesh skeleton plastic composite pipe.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A wire mesh skeleton plastic composite pipe automatic transmission and pushing device, comprising:

[0007] A base and a tube body, wherein the upper end of the base is rotatably connected to two first rods through four brackets, the side walls of the two first rods are fixedly connected to conveying rollers, the side walls of the two conveying rollers are commonly connected to a conveyor belt, and one of the brackets is fixedly connected to a first motor that drives the first rod to rotate;

[0008] A centering mechanism, the centering mechanism includes a plurality of U-shaped plates fixedly connected to the side walls of the conveyor belt, a support plate fixedly connected to the inner bottom of the U-shaped plate, a balance plate rotatably connected to the upper end of the support plate, the lower end of the balance plate is elastically connected to the inner bottom of the U-shaped plate through a plurality of first springs, two U-shaped plates are fixedly connected to the upper end of the balance plate, the inner bottom of the U-shaped plate is arc-shaped, a through groove is provided on the side wall of the U-shaped plate, the top of the through groove is connected to the inner bottom part of the U-shaped plate, two second rods are rotatably connected to the inner walls of the two through grooves, one of the second rod side walls is fixedly connected to the first adjusting roller, and the other second rod side wall is fixedly connected to the second adjusting roller.

[0009] Preferably, it also includes a driving mechanism, which includes a first one-way bearing and a second one-way bearing, the side wall of the U-shaped plate is fixedly connected to the second motor through a support plate, the inner ring side wall of the first one-way bearing and the inner ring side wall of the second one-way bearing are both fixedly connected to the side wall of the movable shaft of the second motor, the side wall of the first one-way bearing is fixedly connected to the first wheel, the side wall of the second one-way bearing is fixedly connected to the second wheel, the side wall of the second rod corresponding to the first adjusting roller is fixedly connected to the third wheel, the side wall of the second rod corresponding to the second adjusting roller is fixedly connected to the fourth wheel, a synchronous belt is connected between the first wheel and the third wheel, and a synchronous belt is connected between the second wheel and the fourth wheel.

[0010] Preferably, the side wall of the U-shaped plate is provided with two arc-shaped grooves corresponding to the two second rods one by one, and the second rods pass through the corresponding arc-shaped grooves.

[0011] Preferably, a trigger mechanism for starting the forward and reverse rotation of the output end of the second motor is provided in the U-shaped plate, and the trigger mechanism includes two grooves opened at the bottom of the U-shaped plate, and the two grooves are respectively arranged close to the two U-shaped plates, and two pressure sensors are respectively installed at the bottom of the two grooves, and the inner walls of the grooves are slidably connected with the first plate and the second plate, and a plurality of second springs are elastically connected between the first plate and the second plate, and the lower end of the balance plate is rotatably connected to the upper end of the first plate through the trigger plate, and the two pressure sensors are electrically connected to the second motor through an external PLC control mechanism.

[0012] Preferably, the U-shaped plate is provided with two clamping mechanisms for clamping the tube body, and the two clamping mechanisms correspond one-to-one to the two U-shaped plates. The clamping mechanism includes two clamping plates slidably connected to the side walls of the U-shaped plate, and the side walls of the two clamping plates close to each other cooperate with the side walls of the tube body. The side walls of the U-shaped plate are provided with two sliding grooves, and a slide plate is slidably connected to the inner walls of the sliding grooves. The lower end of the slide plate is elastically connected to the bottom of the sliding groove by a plurality of third springs, and the side walls of the two clamping plates far away from each other are fixedly connected to a fixed plate, and the side walls of the slide plate are rotatably connected to the side walls of the fixed plate by a rotating rod.

[0013] Preferably, the side wall of the slide plate away from the slide groove is rotatably connected with a roller, and the upper end of the base is fixedly connected to two arched plates through two L-shaped plates, and the lower end of the arched plate is convex.

[0014] Preferably, two vertical plates are fixedly connected to the upper end of the base, a feed tray is rotatably connected between the side walls of the two vertical plates via a friction rod, three feed troughs are evenly distributed on the side walls of the feed tray, and two vertical plates are located at the upper end of the feed tray and are fixedly connected to a storage box, and the outlet of the storage box is opposite to one of the feed troughs.

[0015] Preferably, an incomplete gear is fixedly connected to a side wall of the first rod away from the first motor, and a complete gear is fixedly connected to a side wall of the friction rod, and the incomplete gear meshes with the complete gear during rotation.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. A U-shaped plate is provided, and the bottom of the U-shaped plate is in an arc shape, so that the tube body will automatically enter the bottom of the two U-shaped plates, so that the tube body remains in a horizontal state during the transportation process, avoiding the change in the position of the tube body when the tube body is placed on the conveyor belt in the prior art, that is, the tube body is not necessarily in a horizontal state, and may also be in an inclined state, resulting in inconvenience in subsequent handling of the tube body.

[0018] 2. A centering mechanism, a driving mechanism and a triggering mechanism are provided to automatically center the tube body, thereby avoiding the shaking of the conveyor belt during movement in the prior art. The tube body may not be centered along the conveyor belt, which affects the subsequent processing position of the tube body.

[0019] 3. Set up a clamping mechanism. When the roller moves and contacts the arched plate, the roller will move downward, driving the slide plate to move downward. At this time, the slide plate will drive the two clamping plates to approach each other through two rotating rods and two fixed plates to clamp the tube body. In this process, the cutting and grinding of the clamped tube body can be completed to achieve efficient transmission of the tube body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of an automatic transmission and pushing device for a steel wire mesh skeleton plastic composite pipe proposed by the present invention;

[0021] Figure 2 for Figure 1 A vertical cross-sectional structural schematic diagram of ;

[0022] Figure 3 for Figure 1 Schematic diagram of the centering mechanism, driving mechanism, triggering mechanism and clamping mechanism;

[0023] Figure 4 for Figure 3 A vertical cross-sectional structural schematic diagram of ;

[0024] Figure 5 for Figure 3 A schematic diagram of the structure enlarged at B in the middle;

[0025] Figure 6 for Figure 4 A schematic diagram of the structure enlargement at the center A;

[0026] Figure 7 It is a schematic diagram of the state structure of the two clamping plates after the roller is located under the arch plate;

[0027] Figure 8 for Figure 1 Schematic diagram of the rear view structure.

[0028] In the figure: 1, base; 2, first rod; 3, conveyor roller; 4, conveyor belt; 5, first motor; 6, U-shaped plate; 7, tube body; 8, support plate; 9, balance plate; 10, first spring; 11, U-shaped plate; 12, through groove; 13, second rod; 14, first adjustment roller; 15, second adjustment roller; 16, second motor; 17, first one-way bearing; 18, second one-way bearing; 19, first wheel; 20, second wheel; 21, third wheel; 22 , fourth wheel; 23, groove; 24, pressure sensor; 25, first plate; 26, second spring; 27, second plate; 28, trigger plate; 29, clamping plate; 30, slide groove; 31, slide plate; 32, third spring; 33, fixed plate; 34, rotating rod; 35, arched plate; 36, roller; 37, storage box; 38, friction rod; 39, feed tray; 40, feed trough; 41, complete gear; 42, incomplete gear; 43, arc groove. DETAILED DESCRIPTION

[0029] 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 described embodiments 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 without creative work are within the scope of protection of the present invention.

[0030] Reference Figure 1 - Figure 8 A wire mesh skeleton plastic composite pipe automatic transmission and pushing device comprises a base 1 and a pipe body 7. The upper end of the base 1 is rotatably connected to two first rods 2 through four brackets. The side walls of the two first rods 2 are fixedly connected to conveying rollers 3. The side walls of the two conveying rollers 3 are commonly connected to a conveyor belt 4. A first motor 5 that drives the first rod 2 to rotate is fixedly connected to one of the brackets.

[0031] The upper end of the base 1 is fixedly connected to two vertical plates, and a feed tray 39 is rotatably connected between the side walls of the two vertical plates through a friction rod 38, which can ensure that the feed tray 39 will not rotate without external drive. The side wall of the feed tray 39 is evenly provided with three feed slots 40 (such as Figure 2 As shown), two vertical plates are located at the upper end of the feed tray 39 and are fixedly connected to a storage box 37, and the outlet of the storage box 37 is directly opposite to one of the feed troughs 40.

[0032] An incomplete gear 42 is fixedly connected to the side wall of the first rod 2 away from the first motor 5, and a complete gear 41 is fixedly connected to the side wall of the friction rod 38. The incomplete gear 42 meshes with the complete gear 41 during the rotation process (such as Figure 8 As shown), during the rotation of the incomplete gear 42, the feed tray 39 can be intermittently driven to rotate 120°.

[0033] The centering mechanism includes a plurality of U-shaped plates 6 fixedly connected to the side walls of the conveyor belt 4, a support plate 8 is fixedly connected to the inner bottom of the U-shaped plate 6, a balance plate 9 is rotatably connected to the upper end of the support plate 8, and the lower end of the balance plate 9 is elastically connected to the inner bottom of the U-shaped plate 6 through a plurality of first springs 10. Two U-shaped plates 11 are fixedly connected to the upper end of the balance plate 9, and the inner bottom of the U-shaped plate 11 is arc-shaped, so that the tube body 7 will automatically enter the inner bottom of the two U-shaped plates 11, so that the tube body 7 remains in a horizontal state during the conveying process, avoiding the change in the position of the tube body 7 when the tube body 7 is placed on the conveyor belt 4 in the prior art, that is, the tube body 7 is not necessarily in a horizontal state, and may also be in an inclined state, resulting in inconvenience in subsequent handling of the tube body 7.

[0034] A through slot 12 is provided on the side wall of the U-shaped plate 11, and the top of the through slot 12 is connected to the bottom part of the U-shaped plate 11. Two second rods 13 are rotatably connected to the inner walls of the two through slots 12, one of the side walls of the second rod 13 is fixedly connected to a first adjusting roller 14, and the other side wall of the second rod 13 is fixedly connected to a second adjusting roller 15 (such as Figure 4 and Figure 5 shown).

[0035] like Figure 4 and Figure 5 As shown, the side walls of the first adjusting roller 14 and the second adjusting roller 15 are both in contact with the side walls of the tube body 7. When the first adjusting roller 14 rotates counterclockwise, it can drive the tube body 7 to move toward the direction of the second adjusting roller 15. When the second adjusting roller 15 rotates clockwise, it can drive the tube body 7 to move toward the direction of the first adjusting roller 14. The position of the tube body 7 can be automatically adjusted to be centered, which is convenient for subsequent cutting, grinding and other processing of the tube body 7.

[0036] It should be noted that if Figure 1 As shown, after each rotation of the feeding tray 39 , the tube body 7 fed out of the feeding trough 40 can accurately fall into the two U-shaped plates 11 .

[0037] It also includes a driving mechanism, which includes a first one-way bearing 17 and a second one-way bearing 18. The side wall of the U-shaped plate 6 is fixedly connected to the second motor 16 through a support plate. The inner ring side wall of the first one-way bearing 17 and the inner ring side wall of the second one-way bearing 18 are both fixedly connected to the side wall of the movable shaft of the second motor 16. The side wall of the first one-way bearing 17 is fixedly connected to the first wheel 19, the side wall of the second one-way bearing 18 is fixedly connected to the second wheel 20, the side wall of the second rod 13 corresponding to the first adjusting roller 14 is fixedly connected to the third wheel 21, the side wall of the second rod 13 corresponding to the second adjusting roller 15 is fixedly connected to the fourth wheel 22, a synchronous belt is connected between the first wheel 19 and the third wheel 21, and a synchronous belt is connected between the second wheel 20 and the fourth wheel 22.

[0038] The side wall of the U-shaped plate 6 is provided with two arc-shaped grooves 43 corresponding to the two second rods 13. The second rods 13 penetrate the corresponding arc-shaped grooves 43 (such as Figure 6 shown).

[0039] It should be noted that when the balance board 9 is tilted under the action of the support board 8, the tilt angle is not large, and the second rod 13 rotates at a small angle around the rotation connection between the support board 8 and the balance board 9, which will not affect the connection of the synchronous belts between the first wheel 19 and the third wheel 21 and between the second wheel 20 and the fourth wheel 22.

[0040] like Figure 4 - Figure 6 As shown, when the second motor 16 rotates counterclockwise, the inner ring of the first one-way bearing 17 drives its outer ring to rotate, and the inner ring of the second one-way bearing 18 does not drive its outer ring to rotate. At this time, the first adjusting roller 14 is driven to rotate counterclockwise through the first wheel 19, the synchronous belt, the third wheel 21 and the second rod 13. When the second motor 16 rotates clockwise, the inner ring of the first one-way bearing 17 does not drive its outer ring to rotate, and the inner ring of the second one-way bearing 18 drives its outer ring to rotate. At this time, the second adjusting roller 15 is driven to rotate clockwise through the second wheel 20, the synchronous belt, the fourth wheel 22 and the second rod 13.

[0041] A trigger mechanism for starting the forward and reverse rotation of the output end of the second motor 16 is provided in the U-shaped plate 6. The trigger mechanism includes two grooves 23 opened at the bottom of the U-shaped plate 6. The two grooves 23 are respectively arranged close to the two U-shaped plates 11. Two pressure sensors 24 are respectively installed at the bottom of the two grooves 23. The inner walls of the grooves 23 are slidably connected with the first plate 25 and the second plate 27. A plurality of second springs 26 are elastically connected between the first plate 25 and the second plate 27. The lower end of the balance plate 9 is rotatably connected to the upper end of the first plate 25 through the trigger plate 28. The two pressure sensors 24 are electrically connected to the second motor 16 through an external PLC control mechanism.

[0042] It should be noted that when the tube body 7 is in the center state, the pressure signals on the two pressure sensors 24 are both zero, and the second motor 16 does not rotate.

[0043] When the tube body 7 is placed in the two U-shaped plates 11 and is not at the center of the balance plate 9, the tube body 7 will tilt under the action of the support plate 8. When the tube body 7 tilts downward toward the first adjustment roller 14, the balance plate 9 will drive the first plate 25 near the first adjustment roller 14 to move downward through the trigger plate 28. At this time, the first plate 25 will drive the second plate 27 to move downward through multiple second springs 26. The second plate 27 will squeeze the pressure sensor 24 at this location. At this time, the pressure signal sensed by the pressure sensor 24 at this location will be transmitted to the external PLC control mechanism, thereby driving the second motor 16 to rotate counterclockwise, so that the first adjustment roller 14 rotates counterclockwise, driving the tube body 7 to move toward the second adjustment roller 15. The rotation disappears when the tube body 7 remains horizontal, and the tube body 7 is in a centered state at this time.

[0044] Similarly, when the tube body 7 tilts downward toward the direction of the second adjusting roller 15, the balance plate 9 will drive the first plate 25 near the second adjusting roller 15 to move downward through the trigger plate 28. At this time, the first plate 25 will drive the second plate 27 to move downward through multiple second springs 26. The second plate 27 will squeeze the pressure sensor 24 at this location. At this time, the pressure signal sensed by the pressure sensor 24 at this location will be transmitted to the external PLC control mechanism, thereby driving the second motor 16 to rotate clockwise, so that the second adjusting roller 15 rotates clockwise, driving the tube body 7 to move toward the direction of the first adjusting roller 14. The rotation disappears when the tube body 7 remains horizontal, and the tube body 7 is in a centered state at this time.

[0045] In this way, the tube body 7 can be automatically centered, avoiding the shaking of the conveyor belt 4 during movement in the prior art. The tube body 7 may not be centered along the conveyor belt 4, which affects the subsequent processing position of the tube body 7.

[0046] Two clamping mechanisms for clamping the tube body 7 are provided on the U-shaped plate 6, and the two clamping mechanisms correspond one to one with the two U-shaped plates 11. The clamping mechanism includes two clamping plates 29 slidably connected to the side walls of the U-shaped plate 6, and the side walls of the two clamping plates 29 close to each other cooperate with the side walls of the tube body 7. Two sliding grooves 30 are provided on the side walls of the U-shaped plate 6, and a slide plate 31 is slidably connected to the inner wall of the sliding groove 30. The lower end of the slide plate 31 is elastically connected to the bottom of the sliding groove 30 through a plurality of third springs 32. The side walls of the two clamping plates 29 away from each other are fixedly connected to a fixed plate 33, and the side wall of the slide plate 31 is rotatably connected to the side wall of the fixed plate 33 through a rotating rod 34.

[0047] The slide plate 31 is rotatably connected to the side wall of the slide groove 30 with a roller 36. The upper end of the base 1 is fixedly connected to two arched plates 35 through two L-shaped plates. The lower end of the arched plate 35 is convex (such as Figure 1 and Figure 7 shown).

[0048] like Figure 1 , Figure 4 , Figure 5 and Figure 7 As shown, the arched plate 35 is arranged in the middle of the conveyor belt 4, and before the roller 36 moves from right to left and contacts the arched plate 35, the tube body 7 can be automatically centered at this time, and when the roller 36 moves and contacts the arched plate 35, the roller 36 will move downward, driving the slide plate 31 to move downward, and the slide plate 31 will drive the two clamping plates 29 to approach each other through the two rotating rods 34 and the two fixed plates 33 to clamp the tube body 7. In this process, the cutting and grinding of the clamped tube body 7 can be completed, so as to realize efficient transmission of the tube body 7, and when the roller 36 continues to move to the left and separates from the arched plate 35, under the action of multiple third springs 32, the slide plate 31 is driven to move upward to the original position, and the two clamping plates 29 are driven to move away from each other to the original position, and the staff can remove the processed tube body 7.

[0049] During the transmission of the steel mesh skeleton plastic composite pipe, firstly, a plurality of pipe bodies 7 are placed in the storage box 37. At this time, there will always be a pipe body 7 entering the feed trough 40, and at this time, the first motor 5 is driven to rotate counterclockwise (such as Figure 1 As shown), the two first rods 2 and the two conveying rollers 3 will drive the conveyor belt 4 to move from right to left (as shown in FIG. Figure 1 shown);

[0050] The conveyor belt 4 will drive a plurality of U-shaped plates 6 to move on its surface during the movement. When one of the first rods 2 rotates to drive the incomplete gear 42 to rotate and to separate from the complete gear 41, the feed tray 39 will rotate 120 degrees. At this time, the tube body 7 in the feed trough 40 will fall into the two U-shaped plates 11 corresponding thereto.

[0051] When the tube body 7 is located in the two U-shaped plates 11, since the bottom of the U-shaped plates 11 is in an arc shape, the tube body 7 will automatically enter the bottom of the two U-shaped plates 11, so that the tube body 7 remains in a horizontal state during the transportation process;

[0052] When the tube body 7 is placed in the two U-shaped plates 11 and is not at the center of the balance plate 9, the tube body 7 will tilt under the action of the support plate 8. When the tube body 7 tilts downward toward the first adjusting roller 14, the balance plate 9 will drive the first plate 25 near the first adjusting roller 14 to move downward through the trigger plate 28. At this time, the first plate 25 will drive the second plate 27 to move downward through multiple second springs 26. The second plate 27 will squeeze the pressure sensor 24 at this location. At this time, the pressure signal sensed by the pressure sensor 24 at this location will be transmitted to the external PLC control mechanism, thereby driving the second motor 16 to rotate counterclockwise. At this time, the inner ring of the first one-way bearing 17 drives its outer ring to rotate, and the first adjusting roller 14 will rotate counterclockwise through the first wheel 19, the synchronous belt, the third wheel 21 and the second rod 13, driving the tube body 7 to move toward the second adjusting roller 15. The rotation disappears when the tube body 7 remains horizontal, and the tube body 7 is in a centered state at this time.

[0053] Similarly, when the tube body 7 tilts downward toward the direction of the second adjusting roller 15, the balance plate 9 will drive the first plate 25 near the second adjusting roller 15 to move downward through the trigger plate 28. At this time, the first plate 25 will drive the second plate 27 to move downward through multiple second springs 26. The second plate 27 will squeeze the pressure sensor 24 at this location. At this time, the pressure signal sensed by the pressure sensor 24 at this location will be transmitted to the external PLC control mechanism, thereby driving the second motor 16 to rotate clockwise, and the inner ring of the second one-way bearing 18 drives its outer ring to rotate, and the second adjusting roller 15 is driven to rotate clockwise through the second wheel 20, the synchronous belt, the fourth wheel 22 and the second rod 13, driving the tube body 7 to move toward the direction of the first adjusting roller 14. The rotation disappears when the tube body 7 remains horizontal, and the tube body 7 is in a centered state at this time.

[0054] In this way, the tube body 7 can be automatically centered, avoiding the shaking of the conveyor belt 4 during the movement of the prior art, and the tube body 7 may not be centered along the conveyor belt 4, which affects the subsequent processing position of the tube body 7;

[0055] When the roller 36 moves from right to left and contacts the arched plate 35, the roller 36 will move downward, driving the slide plate 31 to move downward. At this time, the slide plate 31 will drive the two clamping plates 29 to approach each other through the two rotating rods 34 and the two fixed plates 33 to clamp the tube body 7. In this process, the cutting, grinding and other processing operations of the clamped tube body 7 can be completed to achieve efficient transmission of the tube body 7. When the roller 36 continues to move to the left and separates from the arched plate 35, under the action of multiple third springs 32, the slide plate 31 is driven to move upward to the original position, driving the two clamping plates 29 away from each other to the original position. At this time, the staff can remove the processed tube body 7, and then repeat the above steps to complete the automatic conveying and pushing of the tube body 7 and subsequent processing.

[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic transmission and pushing device for steel wire mesh skeleton plastic composite pipe, characterized in that: include: A base (1) and a tube body (7), wherein the upper end of the base (1) is rotatably connected to two first rods (2) via four brackets, the side walls of the two first rods (2) are fixedly connected to conveying rollers (3), the side walls of the two conveying rollers (3) are commonly connected to a conveyor belt (4), and a first motor (5) for driving the first rods (2) to rotate is fixedly connected to one of the brackets; A centering mechanism, the centering mechanism comprises a plurality of U-shaped plates (6) fixedly connected to the side walls of the conveyor belt (4), the inner bottom of the U-shaped plates (6) being fixedly connected to a support plate (8), the upper end of the support plate (8) being rotatably connected to a balance plate (9), the lower end of the balance plate (9) being elastically connected to the inner bottom of the U-shaped plates (6) through a plurality of first springs (10), the upper end of the balance plate (9) being fixedly connected to two U-shaped plates (11), the inner bottom of the U-shaped plates (11) being arc-shaped, the side walls of the U-shaped plates (11) being provided with through grooves (12), the top of the through grooves (12) being connected to the inner bottom of the U-shaped plates (11), the inner walls of the two through grooves (12) being rotatably connected to two second rods (13), one of the side walls of the second rods (13) being fixedly connected to a first adjusting roller (14), and the other side wall of the second rods (13) being fixedly connected to a second adjusting roller (15).

2. The automatic transmission and pushing device for steel wire mesh skeleton plastic composite pipe according to claim 1 is characterized in that: The invention also comprises a driving mechanism, wherein the driving mechanism comprises a first one-way bearing (17) and a second one-way bearing (18); the side wall of the shaped plate (6) is fixedly connected to the second motor (16) through a support plate; the inner ring side wall of the first one-way bearing (17) and the inner ring side wall of the second one-way bearing (18) are both fixedly connected to the side wall of the movable shaft of the second motor (16); the side wall of the first one-way bearing (17) is fixedly connected to the first wheel (19); the side wall of the second one-way bearing (18) is fixedly connected to the second wheel (20); the side wall of the second rod (13) corresponding to the first adjusting roller (14) is fixedly connected to the third wheel (21); the side wall of the second rod (13) corresponding to the second adjusting roller (15) is fixedly connected to the fourth wheel (22); a synchronous belt is connected between the first wheel (19) and the third wheel (21); and a synchronous belt is connected between the second wheel (20) and the fourth wheel (22).

3. The automatic transmission and pushing device for steel wire mesh skeleton plastic composite pipe according to claim 1 is characterized in that: The side wall of the U-shaped plate (6) is provided with two arc-shaped grooves (43) corresponding to the two second rods (13) one by one, and the second rods (13) pass through the corresponding arc-shaped grooves (43).

4. The automatic transmission and pushing device for steel wire mesh skeleton plastic composite pipe according to claim 2 is characterized in that: The U-shaped plate (6) is provided with a trigger mechanism for starting the output end of the second motor (16) to rotate forward and reverse. The trigger mechanism comprises two grooves (23) provided at the bottom of the U-shaped plate (6). The two grooves (23) are respectively arranged close to the two U-shaped plates (11). Two pressure sensors (24) are respectively installed at the bottom of the two grooves (23). The inner walls of the grooves (23) are slidably connected with a first plate (25) and a second plate (27). A plurality of second springs (26) are elastically connected between the first plate (25) and the second plate (27). The lower end of the balance plate (9) is rotatably connected to the upper end of the first plate (25) through a trigger plate (28). The two pressure sensors (24) are both electrically connected to the second motor (16) through an external PLC control mechanism.

5. The automatic transmission and pushing device for steel wire mesh skeleton plastic composite pipe according to claim 4 is characterized in that: The U-shaped plate (6) is provided with two clamping mechanisms for clamping the tube body (7), and the two clamping mechanisms correspond to the two U-shaped plates (11) one by one. The clamping mechanism includes two clamping plates (29) slidably connected to the side walls of the U-shaped plate (6), and the side walls of the two clamping plates (29) close to each other cooperate with the side walls of the tube body (7). The side walls of the U-shaped plate (6) are provided with two sliding grooves (30), and the inner walls of the sliding grooves (30) are slidably connected with a slide plate (31). The lower end of the slide plate (31) is elastically connected to the bottom of the sliding groove (30) through a plurality of third springs (32), and the side walls of the two clamping plates (29) away from each other are fixedly connected with a fixed plate (33), and the side wall of the slide plate (31) is rotatably connected to the side wall of the fixed plate (33) through a rotating rod (34).

6. The automatic transmission and pushing device for steel wire mesh skeleton plastic composite pipe according to claim 5 is characterized in that: The slide plate (31) is rotatably connected to a roller (36) at a side wall away from the slide groove (30), and the upper end of the base (1) is fixedly connected to two arched plates (35) via two L-shaped plates, respectively, and the lower end of the arched plate (35) is convex.

7. The automatic transmission and pushing device for steel wire mesh skeleton plastic composite pipe according to claim 1 is characterized in that: Two vertical plates are fixedly connected to the upper end of the base (1); a feed tray (39) is rotatably connected between the side walls of the two vertical plates via a friction rod (38); three feed troughs (40) are evenly distributed on the side walls of the feed tray (39); a material storage box (37) is fixedly connected to the upper end of the two vertical plates located on the feed tray (39); an outlet of the material storage box (37) is directly opposite to one of the feed troughs (40).

8. The automatic transmission and pushing device for steel wire mesh skeleton plastic composite pipe according to claim 7 is characterized in that: An incomplete gear (42) is fixedly connected to the side wall of the first rod (2) away from the first motor (5), and a complete gear (41) is fixedly connected to the side wall of the friction rod (38), and the incomplete gear (42) meshes with the complete gear (41) during rotation.

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