Thermoplastic composite material spiral stirrup device

Abstract

The invention discloses a thermoplastic composite material spiral stirrup device, and belongs to the technical field of composite material stirrup devices, the thermoplastic composite material spiral stirrup device comprises an equipment box and thermoplastic ribs, the equipment box is provided with a driving mechanism and an electric push rod, the driving mechanism is provided with a hooping and winding frame, the hooping and winding frame comprises a hollow shaft, and a pushing mechanism is movably arranged in the hollow shaft; the pushing mechanism is connected with the electric push rod, hooping and winding mechanisms are arranged on the upper left portion, the lower left portion, the upper right portion and the lower right portion of the hollow shaft, fixing rods are arranged on the hooping and winding mechanisms, the distance between the fixing rods and the hollow shaft is larger than the distance between the inner supporting rods and the hollow shaft, a plurality of limiting wheels are evenly fixed to the fixing rods, and thermoplastic ribs are spirally hooped and wound on wheel grooves of the limiting wheels. When the thermoplastic rib needs to be taken down in the forming process, the inner supporting rod replaces an original limiting wheel to conduct inner supporting on the thermoplastic rib, the thermoplastic rib can be directly taken down, workers or equipment do not need to lift the thermoplastic rib and then pull the thermoplastic rib out, operation is easy, the operation process is greatly saved, and work efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of thermoplastic composite material stirrup devices, specifically a thermoplastic composite material spiral stirrup device. Background Technology

[0002] In marine engineering, spiral-wound thermoplastic reinforcing bars are required. These bars are primarily composed of composite materials such as resin, carbon fiber, and initiators. When freshly produced, they are extruded linearly using an extruder. Because the resin and carbon fiber mixture is heated and extruded, it possesses a certain degree of flexibility, allowing for easy bending and shaping. To meet engineering requirements, the thermoplastic reinforcing bars are spirally wound. After winding and allowing them to cool and solidify, the spiral thermoplastic reinforcing bars are removed. During the winding process, the winding frame rotates at a very low speed under the drive of a drive unit. The flexible thermoplastic reinforcing bars extruded from the extruder are pulled laterally by a reciprocating mechanism on the side of the winding frame. Combined with the rotation of the winding frame, the thermoplastic reinforcing bars are gradually wound from left to right. The thermoplastic rebar is wound around the grooves of the limiting wheels of the hoop frame. However, after the hoop is finished and the thermoplastic rebar cools and solidifies, it is difficult to remove because it is embedded in the grooves of the limiting wheels. Existing technology uses the limiting wheels of the thermoplastic rebar to shrink inward and support outward, so that the thermoplastic rebar can be freed from the constraint of the limiting wheels and thus be easy to remove from the hoop frame. However, when the limiting wheels shrink radially inward in the hoop frame, the bottom and left and right parts of the thermoplastic rebar are separated from the limiting wheels, while the upper part is still wound in the groove of the upper limiting wheel due to gravity. Lifting equipment is required to lift or raise the thermoplastic rebar so that all the grooves of the limiting wheels are freed from the thermoplastic rebar. Then the thermoplastic rebar is pulled out from the entire hoop frame from right to left. The whole operation process is complicated and affects production efficiency. Summary of the Invention

[0003] To address the technical problems mentioned in the background section, the present invention provides a thermoplastic composite spiral stirrup device, the technical solution of which is as follows:

[0004] The device includes an equipment box and thermoplastic reinforcing bars. The equipment box is equipped with a drive mechanism and an electric actuator. The drive mechanism is equipped with a hoop frame, which includes a hollow shaft. The drive mechanism is connected to the hollow shaft, and a pushing mechanism is movably installed inside the hollow shaft. The pushing mechanism is connected to the electric actuator. An inner support mechanism is installed on the hollow shaft at four positions: top, bottom, left, and right. One end of the pushing mechanism movably passes through the inner support mechanism and cooperates with it. An inner support rod is installed on the inner support mechanism. A hoop frame is installed on the hollow shaft at four positions: upper left, lower left, upper right, and lower right. A fixing rod is installed on the hoop frame. The distance between the fixing rod and the hollow shaft is greater than the distance between the inner support rod and the hollow shaft. Several limiting wheels are evenly fixed on the fixing rod. The thermoplastic reinforcing bars are spirally wound around the grooves of each limiting wheel.

[0005] Furthermore, the drive mechanism includes a motor fixed on the equipment box, a drive pulley fixedly connected to the output end of the motor, a belt connected to the drive pulley, a driven pulley connected to the other end of the belt, the driven pulley fixed on a hollow shaft, a first bearing connected to the hollow shaft, and the first bearing embedded in the equipment box.

[0006] Furthermore, the pushing mechanism includes a push rod movably connected within a hollow shaft. One end of the push rod is connected to a second bearing, and a push cylinder is connected to the second bearing. The push cylinder is connected to the telescopic end of the electric push rod. The hollow shaft has first sliding grooves in four directions (upper, lower, left, and right) that communicate with the push rod. A first slider is slidably disposed within the first sliding grooves, and a first pushing component is disposed on the first slider. The hollow shaft also has second sliding grooves in four directions (upper left, lower left, upper right, and lower right) that communicate with the push rod. A second slider is slidably disposed within the second sliding grooves, and a second pushing component is disposed on the second slider.

[0007] Furthermore, the first pusher includes a first square rod fixedly connected to the first slider, and a wedge-shaped block is provided at both the front end and the rear end of the first square rod.

[0008] Furthermore, the second pusher includes a second square rod fixedly connected to the second slider, and both the front and rear ends of the second square rod are provided with wedge-shaped openings.

[0009] Furthermore, the inner support mechanism includes a first square sleeve, a first push rod is movably connected inside the first square sleeve, the first push rod is fixedly connected to the inner support rod, a first fixed plate is fixedly connected inside the first square sleeve, a first round rod is fixedly connected to the bottom of the first square sleeve, the first round rod movably passes through the first fixed plate, a first groove block is fixedly connected to the end of the first round rod, a first roller is rotatably connected inside the first groove block, a first spring is sleeved on the first round rod, and the two ends of the first spring are fixedly connected to the first fixed plate and the first groove block respectively.

[0010] Furthermore, the first square sleeve has a first through hole at both the front and rear, the first square rod moves through the first through hole, and the first roller rolls in contact with the first square rod.

[0011] Furthermore, the hooping mechanism includes a second square sleeve, a second push rod is movably connected inside the second square sleeve, the second push rod is fixedly connected to a fixed rod, a second fixed plate is fixedly connected inside the second square sleeve, a second round rod is fixedly connected to the bottom of the second square sleeve, the second round rod movably passes through the second fixed plate, a second groove block is fixedly connected to the end of the second round rod, a second roller is rotatably connected inside the second groove block, a second spring is sleeved on the second round rod, and the two ends of the second spring are fixedly connected to the second fixed plate and the second groove block respectively.

[0012] Furthermore, the second square sleeve has a second through hole at both the front and rear, the second square rod moves through the second through hole, and the second roller rolls in contact with the second square rod.

[0013] Furthermore, the limit wheel is fixed to the fixed rod by bolts.

[0014] This invention has the following advantages: When it is necessary to remove the thermoplastic rib, the telescopic end of the electric push rod retracts, driving the pushing mechanism to move horizontally towards the end closest to the electric push rod. The pushing mechanism first drives the inner support mechanisms in the four directions (upper, lower, left, and right) to move outwards, stopping when the inner support rods on the inner support mechanisms contact the thermoplastic rib. Then, the pushing mechanism drives the hooping mechanisms in the four directions (upper left, lower left, upper right, and lower right) to move inwards, causing the wheel grooves of the limiting wheels of the hooping mechanisms in all four directions to disengage from the thermoplastic rib. At this point... The thermoplastic rib is fitted onto the inner support rods in the four directions of top, bottom, left, and right. The inner support rods have smooth surfaces and provide unlimited support for the thermoplastic rib. Workers only need to easily pull out the spirally wound thermoplastic rib from right to left on the inner support rods. The thermoplastic rib is then detached from the hoop frame. When the thermoplastic rib needs to be removed after molding, the inner support rods replace the original limiting wheels for supporting the thermoplastic rib, allowing the thermoplastic rib to be removed directly without the need for workers or equipment to lift and pull it out. The operation is simple, greatly saving on the operation process and improving work efficiency. Attached Figure Description

[0015] Figure 1 The structure of the present invention Figure 1 ;

[0016] Figure 2 For the present invention Figure 1 A magnified view of a portion of point a.

[0017] Figure 3 The structure of the present invention Figure 2 ;

[0018] Figure 4 For the present invention Figure 3 A magnified view of a section at point b in the middle;

[0019] Figure 5 This is an exploded view of part of the structure of the present invention;

[0020] Figure 6 The present invention removes the thermoplastic rib, the first sleeve, and the second sleeve structure. Figure 1 ;

[0021] Figure 7 For the present invention Figure 6 A magnified view of a section at point c in the middle;

[0022] Figure 8 This is a structural diagram of the thermoplastic rib of the present invention;

[0023] Figure 9 The present invention removes the thermoplastic rib, the first sleeve, and the second sleeve structure. Figure 2 ;

[0024] Figure 10 For the present invention Figure 9 A magnified view of a portion at point d in the middle;

[0025] Figure 11 The present invention removes the thermoplastic rib, the first sleeve, and the second sleeve structure. Figure 3 ;

[0026] Figure 12 For the present invention Figure 11 A magnified view of a section at point e in the middle;

[0027] Figure 13 For the present invention Figure 12 A magnified view of a portion at point f.

[0028] Attached Figures: 1. Equipment Box; 2. Thermoplastic Rib; 3. Electric Actuator; 5. Hollow Shaft; 4. Hoop Frame; 6. Inner Support Rod; 7. Fixing Rod; 8. Limiting Wheel; 9. Motor; 10. Drive Pulley; 11. Belt; 12. Driven Pulley; 13. First Bearing; 14. Push Rod; 15. Second Bearing; 16. Push Cylinder; 17. First Slide Groove; 18. First Slider; 19. Second Slide Groove; 20. Second Slider; 21. First Square Rod; 22. 23. Wedge block, 24. Second square rod, 25. Wedge opening, 26. First square sleeve, 27. First top rod, 28. First fixing plate, 29. First round rod, 30. First groove block, 31. First roller, 32. First spring, 33. First through hole, 34. Second square sleeve, 35. Second top rod, 36. Second fixing plate, 37. Second round rod, 38. Second groove block, 39. Second roller, 40. Second spring, 31. Second through hole. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please refer to Figure 1-13This invention provides a thermoplastic composite spiral stirrup device, including an equipment box 1 and a thermoplastic stirrup 2. The equipment box 1 houses a power control device, and a drive mechanism and an electric push rod 3 are mounted on the equipment box 1. The electric push rod 3 is fixed to the equipment box 1. The drive mechanism is equipped with a stirrup frame 4, which includes a hollow shaft 5 with a hollow circular hole inside. The drive mechanism is connected to the hollow shaft 5, and the drive mechanism drives the hollow shaft 5 to rotate slowly. A pushing mechanism is movably mounted inside the hollow shaft 5, and the pushing mechanism is connected to the electric push rod 3. The electric push rod 3 drives the pushing mechanism to move horizontally. An inner support mechanism is provided on the hollow shaft 5 at four positions: top, bottom, left, and right. One end of the pushing mechanism movably passes through the inner support mechanism and cooperates with it. When the pushing mechanism moves, it drives the inner support mechanism. The mechanism moves to the outer or inner circle. The inner support mechanism is equipped with an inner support rod 6. The hollow shaft 5 is equipped with a hooping mechanism in four positions: upper left, lower left, upper right, and lower right. The pushing mechanism drives the hooping mechanism to move to the outer or inner circle. The hooping mechanism is equipped with a fixing rod 7. The distance between the fixing rod 7 and the hollow shaft 5 is greater than the distance between the inner support rod 6 and the hollow shaft 5. Several limiting wheels 8 are evenly fixed on the fixing rod 7. When the thermoplastic rib 2 is hooped in the groove of the limiting wheel 8, the inner support rod 6 does not contact the thermoplastic rib 2. The inner support rod 6 is located inside the thermoplastic rib 2. The thermoplastic rib 2 is spirally hooped on the groove of each limiting wheel 8. After hooping, the thermoplastic rib 2 is square in shape. The limiting wheel 8 is fixed to the fixing rod 7 with bolts, which makes it easy to disassemble or adjust the position of the limiting wheel 8 on the fixing rod 7.

[0031] The drive mechanism includes a motor 9 fixed on the equipment box 1. A drive pulley 10 is fixedly connected to the output end of the motor 9. A belt 11 is connected to the drive pulley 10. The other end of the belt 11 is connected to a driven pulley 12. The driven pulley 12 is fixed on a hollow shaft 5. A first bearing 13 is connected to the hollow shaft 5. The first bearing 13 is embedded in the equipment box 1. The motor 9 drives the drive pulley 10 to rotate. The drive pulley 10 drives the belt 11 to rotate. The belt 11 drives the driven pulley 12 to rotate. The driven pulley 12 drives the hollow shaft 5 to rotate on the first bearing 13.

[0032] The pushing mechanism includes a push rod 14 movably connected within a hollow shaft 5. The push rod 14 can move horizontally within the hollow shaft 5. One end of the push rod 14 is connected to a second bearing 15, and a push cylinder 16 is connected to the second bearing 15. The push cylinder 16 is connected to the telescopic end of the electric push rod 3. When the push rod 14 rotates synchronously under the drive of the hollow shaft 5, the push rod 14 rotates within the second bearing 15, while the push cylinder 16 fixes the second bearing 15. Since the push cylinder 16 is fixed to the electric push rod 14, it does not rotate. However, when the hollow shaft 5 does not rotate, and the electric push rod 14 drives the push cylinder 16 and the second bearing 15 to move, the second bearing 15 drives the push rod 14 to move within the hollow shaft 5. The hollow shaft 5 moves in four directions: up, down, left, and right. A first slide groove 17 connected to the push rod 14 is provided at each of the four positions of the hollow shaft 5. A first slider 18 is slidably disposed in the first slide groove 17. The first slider 18 is fixed on the push rod 14 and can slide within the first slide groove 17. A first pusher is provided on the first slider 18. When the first slider 18 slides, it drives the first pusher to move. A second slide groove 19 connected to the push rod is provided at the four positions of the upper left, lower left, upper right and lower right on the hollow shaft 5. A second slider 20 is slidably disposed in the second slide groove 19. The second slider 20 is fixed on the push rod 14 and can slide within the second slide groove 19. A second pusher is provided on the second slider 20 and drives the second pusher to move.

[0033] The first pusher includes a first square rod 21 fixedly connected to the first slider 18. A wedge block 22 is provided at both the front and rear ends of the first square rod 21. During the stage of the thermoplastic rib 2 winding, the first roller 30 contacts the first square rod 21.

[0034] The second pusher includes a second square rod 23 fixedly connected to the second slider 20. The front and rear ends of the second square rod 23 are provided with wedge-shaped openings 24. During the stage of the thermoplastic rib 2 being wrapped, the second roller 38 contacts the second square rod 23.

[0035] The internal support mechanism includes a first square sleeve 25, which is fixed to a hollow shaft 5. A first push rod 26 is movably connected inside the first square sleeve 25 and can rise and fall within it. The first push rod 26 is fixedly connected to an internal support rod 6. A first fixing plate 27 is fixedly connected inside the first square sleeve 25. A first round rod 28 is fixedly connected to the bottom of the first square sleeve 25 and movably passes through the first fixing plate 27. A first groove block 29 is fixedly connected to the end of the first round rod 28, and a first roller 30 is rotatably connected within the first groove block 29. A first spring 31 is sleeved on the first round rod 28. The two ends of the first spring 31 are fixedly connected to the first fixed plate 27 and the first groove block 29, respectively. When the wedge block 22 contacts the first roller 30, the first roller 30 gradually moves upward. The first roller 30 drives the first groove block 29, the first round rod 28, the first top rod 26 and the inner support rod 6 to rise. The first spring 31 is compressed. The first square sleeve 25 has a first through hole 32 at both the front and rear. The first square rod 21 moves through the first through hole 32. The first roller 30 rolls in contact with the first square rod 21.

[0036] The hooping mechanism includes a second square sleeve 33, a second top rod 34 movably connected inside the second square sleeve 33, the second top rod 34 being fixedly connected to the fixed rod 7, a second fixed plate 35 fixedly connected inside the second square sleeve 33, a second round rod 36 fixedly connected to the bottom of the second square sleeve 33, the second round rod 36 movably passing through the second fixed plate 35, a second groove block 37 fixedly connected to the end of the second round rod 36, a second roller 38 rotatably connected inside the second groove block 37, a second spring 39 sleeved on the second round rod 36, the two ends of the second spring 39 being fixedly connected to the second fixed plate 35 and the second groove block 37 respectively, when the second roller 38 moves into the wedge-shaped opening 24, the second spring 39 is released, and the second roller 38, the second round rod 36, the second top rod 34, the fixed rod 7 and the limiting wheel 8 descend, the second square sleeve 33 has a second through hole 40 at both the front and rear, the second square rod 23 movably passes through the second through hole 40, and the second roller 38 rolls in contact with the second square rod 23.

[0037] Working principle of the invention:

[0038] Thermoplastic reinforcement 2-stage

[0039] Motor 9 drives the drive pulley 10 to rotate. Driven by belt 11, the driven pulley 12 also rotates slowly. The driven pulley 12 drives the hollow shaft 5 to rotate on the first bearing 13. The hollow shaft 5 drives the entire hoop frame 4 to rotate. Since the first slider 18 is connected to the push rod 14 and extends to the outside of the first slide groove 17 and is connected to the first square rod 21, and the second slider 20 is connected to the push rod 14 and extends to the outside of the second slide groove 19 and is connected to the second square rod 23, under the limitation of the first slider 18 and the second slider 20, the push rod 14, the first slider 18, the first square rod 21, the second slider 20 and the second square rod 23 also rotate with the hollow shaft 5. The other end of the push rod 14 rotates in the second bearing 15. The above description is only a partial description of the improved solution. The thermoplastic rib 2 and the reciprocating movement mechanism are hooped on the limiting wheel 8, which has been described in the prior art of the background art and will not be described here.

[0040] Thermoplastic reinforcement 2 removal stage

[0041] After the thermoplastic reinforcing bar 2 has finished winding and the equipment has stopped operating and cooled and solidified, when it is necessary to remove the thermoplastic reinforcing bar 2, the electric actuator 3 is activated. The output end of the electric actuator 3 retracts inward, driving the push cylinder 16 to move towards the end closer to the electric actuator 3. The push cylinder 16 drives the second bearing 15, push rod 14, first slider 18, first square rod 21, second slider 20, and second square rod 23 to move synchronously towards the end closer to the electric actuator 3. At this time, the wedge block 22 first engages with the first roller 30. Upon contact, the first roller 30 and the slope of the wedge block 22 move from the bottom to the top, and the first roller 30 gradually rises. The first roller 30 drives the first groove block 29, the first round rod 28, the first top rod 26 and the inner support rod 6 to rise. The first spring 31 is compressed, and all the inner support rods 6 move outward. When the inner support rod 6 contacts the thermoplastic rib 2, the first roller 30 moves to the flat slope of the wedge block 22. At this time, although the first square rod 21 is still moving, the first roller 30 rolls on the flat slope and no longer rises.

[0042] In the above description, when the first roller 30 just contacts the flat slope of the wedge block 22, the second roller 38 moves into the wedge opening 24 and moves from the high end to the low end of the slope of the wedge opening 24. The second spring 39 is released, and the second roller 38, the second round rod 36, the second top rod 34, the fixed rod 7 and the limiting wheel 8 all descend. The limiting wheel 8 moves inward, and the groove of the limiting wheel 8 disengages from the thermoplastic rib 2. At this time, the thermoplastic rib 2 is fitted onto the inner support rods 6 in the four directions of upper, lower, left and right. At this time, the worker only needs to pull the thermoplastic rib 2 out from the inner support rod 6 from right to left, and the thermoplastic rib 2 can be separated from the hoop frame 4.

[0043] This invention is simple to operate, convenient to use, and suitable for widespread promotion and application. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thermoplastic composite spiral stirrup device, comprising an equipment box (1) and thermoplastic stirrups (2), characterized in that, The equipment box (1) is equipped with a drive mechanism and an electric push rod (3). The drive mechanism is equipped with a hoop frame (4). The hoop frame (4) includes a hollow shaft (5). The drive mechanism is connected to the hollow shaft (5). A push mechanism is movably arranged inside the hollow shaft (5). The push mechanism is connected to the electric push rod (3). An inner support mechanism is arranged on the hollow shaft (5) in the four directions of upper, lower, left, and right. One end of the push mechanism movably passes through the inner support mechanism and is arranged in cooperation with the inner support mechanism. An inner support rod (6) is arranged on the inner support mechanism. A hoop mechanism is arranged on the hollow shaft (5) in the four directions of upper left, lower left, upper right, and lower right. A fixed rod (7) is arranged on the hoop mechanism. The distance between the fixed rod (7) and the hollow shaft (5) is greater than the distance between the inner support rod (6) and the hollow shaft (5). Several limit wheels (8) are evenly fixed on the fixed rod (7). Thermoplastic ribs (2) are spirally wound on the grooves of each limit wheel (8).

2. The thermoplastic composite spiral stirrup device according to claim 1, characterized in that, The drive mechanism includes a motor (9) fixed on the equipment box (1), a drive pulley (10) fixedly connected to the output end of the motor (9), a belt (11) connected to the drive pulley (10), a driven pulley (12) connected to the other end of the belt (11), the driven pulley (12) fixed on the hollow shaft (5), a first bearing (13) connected to the hollow shaft (5), and the first bearing (13) embedded in the equipment box (1).

3. The thermoplastic composite spiral stirrup device according to claim 1, characterized in that, The pushing mechanism includes a push rod (14) movably connected inside the hollow shaft (5). One end of the push rod (14) is connected to a second bearing (15). A push cylinder (16) is connected to the second bearing (15). The push cylinder (16) is connected to the telescopic end of the electric push rod (3). The hollow shaft (5) has a first slide groove (17) connected to the push rod (14) in the four directions of upper, lower, left, and right. A first slider (18) is slidably arranged in the first slide groove (17). A first pusher is arranged on the first slider (18). A second slide groove (19) connected to the push rod is opened in the four directions of upper left, lower left, upper right, and lower right. A second slider (20) is slidably arranged in the second slide groove (19). A second pusher is arranged on the second slider (20).

4. The thermoplastic composite spiral stirrup device according to claim 3, characterized in that, The first pusher includes a first square rod (21) fixedly connected to the first slider (18), and a wedge block (22) is provided at both the front end and the rear end of the first square rod (21).

5. The thermoplastic composite spiral stirrup device according to claim 3, characterized in that, The second pusher includes a second square rod (23) fixedly connected to the second slider (20), and the front and rear ends of the second square rod (23) are provided with wedge-shaped openings (24).

6. The thermoplastic composite spiral stirrup device according to claim 1, characterized in that, The inner support mechanism includes a first square sleeve (25), a first top rod (26) is movably connected inside the first square sleeve (25), the first top rod (26) is fixedly connected to the inner support rod (6), a first fixing plate (27) is fixedly connected inside the first square sleeve (25), a first round rod (28) is fixedly connected to the bottom of the first square sleeve (25), the first round rod (28) movably passes through the first fixing plate (27), a first groove block (29) is fixedly connected to the end of the first round rod (28), a first roller (30) is rotatably connected inside the first groove block (29), and a first spring (31) is sleeved on the first round rod (28), the two ends of the first spring (31) are fixedly connected to the first fixing plate (27) and the first groove block (29) respectively.

7. The thermoplastic composite spiral stirrup device according to claim 4 or 6, characterized in that, The first square sleeve (25) has a first through hole (32) at both the front and rear. The first square rod (21) moves through the first through hole (32) and the first roller (30) rolls in contact with the first square rod (21).

8. The thermoplastic composite spiral stirrup device according to claim 1, characterized in that, The hooping mechanism includes a second square sleeve (33), a second top rod (34) is movably connected inside the second square sleeve (33), the second top rod (34) is fixedly connected to the fixed rod (7), a second fixed plate (35) is fixedly connected inside the second square sleeve (33), a second round rod (36) is fixedly connected to the bottom of the second square sleeve (33), the second round rod (36) movably passes through the second fixed plate (35), a second groove block (37) is fixedly connected to the end of the second round rod (36), a second roller (38) is rotatably connected inside the second groove block (37), and a second spring (39) is sleeved on the second round rod (36), the two ends of the second spring (39) are fixedly connected to the second fixed plate (35) and the second groove block (37) respectively.

9. A thermoplastic composite spiral stirrup device according to claim 5 or 8, characterized in that, The second square sleeve (33) has a second through hole (40) at both the front and rear. The second square rod (23) moves through the second through hole (40) and the second roller (38) rolls in contact with the second square rod (23).

10. The thermoplastic composite spiral stirrup device according to claim 1, characterized in that, The limiting wheel (8) is fixed to the fixing rod (7) by bolts.

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