A traction mechanism for a regenerative plastic extruder
Through innovative design of the adjustment and feeding components, the problems of unstable plastic strip traction and adhesion in recycled plastic extruders have been solved, achieving dynamic tension adjustment and efficient feeding.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU SIKESAIS PLASTIC PROD CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-06-05
AI Technical Summary
The traction mechanism of existing recycled plastic extruders cannot adjust the tension according to the elastic changes of the plastic strip during the traction process, resulting in unstable traction. At the same time, the plastic strip is prone to sticking together, which affects the conveying efficiency.
A traction mechanism including an adjustment component and a feeding component was designed. The tension of the plastic strip is adjusted by driving a U-shaped slider and a connecting plate through an electric push rod. Combined with the design of a vibration motor and a spring, the tension can be dynamically adjusted and adhesion can be prevented.
It improves the stability and controllability of plastic strip traction, avoids breakage and adhesion problems, and improves material feeding efficiency.
Smart Images
Figure CN224323540U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of recycled plastic extrusion processing, specifically a traction mechanism for a recycled plastic extruder. Background Technology
[0002] Recycled plastics are plastic raw materials obtained by processing waste plastics through physical or chemical methods. It represents the reuse of plastics. Recycled plastics refer to the process of processing waste plastics through physical or chemical methods such as pretreatment, melt granulation, and modification to reconstruct usable plastic raw materials. Its core objective is to achieve the recycling of plastics, reduce resource waste and environmental pollution. During the extrusion process, recycled plastics require traction devices to assist in the processing.
[0003] In the prior art, such as in CN220219607U, a traction mechanism for a recycled plastic extruder is disclosed. It includes a traction table, a fixed frame installed on the top of the traction table, an adjusting frame installed above the fixed frame, a drive roller and a driven roller rotatably connected to the front and rear ends of the inner sides of the fixed frame and the adjusting frame, a conveyor belt sleeved on the outer sides of the drive roller and the driven roller, an adjusting mechanism installed on the top of the traction table and on the back of the adjusting frame, a cooling box installed on the front of the traction table, and an air-cooled box installed on the front of the cooling box.
[0004] While the aforementioned patent improves the toughness of the plastic strip after cooling to prevent breakage during traction, and then uses a fixed frame and an adjusting frame to stably and evenly traction the plastic strip to prevent breakage during traction, multiple plastic strips are tractioned together during plastic extrusion. During traction, the plastic strips have a certain degree of elasticity, and it is impossible to adjust the traction tension according to the changes in elasticity, thereby reducing the stability of traction. At the same time, the plastic strips stick together during traction, affecting traction and conveying. Therefore, to address the above problems, a traction mechanism for a recycled plastic extruder is proposed. Utility Model Content
[0005] To overcome the shortcomings of existing technologies, during plastic extrusion traction, multiple plastic strips are tractioned together. During traction, the plastic strips have a certain degree of elasticity, and the traction tension cannot be adjusted according to the changes in elasticity, thereby reducing the stability of traction. At the same time, the plastic strips stick together during traction, affecting the traction and conveying problem. This utility model proposes a traction mechanism for a recycled plastic extruder.
[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The traction mechanism of the recycled plastic extruder of this utility model includes a box body, the front and back of which are open. The box body is characterized by: support plates provided on both sides of the back edge of the box body; an adjustment assembly provided on the top of the support plates; and a feeding assembly provided on the bottom edge of the front edge of the box body. The adjustment assembly includes an electric push rod fixed to the top of the support plate; a U-shaped slider is movably connected to the top of the electric push rod; a connecting plate is slidably connected inside the U-shaped slider; a fixed cylinder with a guide rail groove is provided at one end of the connecting plate; and the other end is rotatably connected to the side of the box body. The feeding assembly includes a U-shaped plate fixed to the front of the box body; springs are provided at the four corners of the inner bottom surface of the U-shaped plate; a receiving plate is provided at the top of the springs; a limiting groove is provided on the top surface of the receiving plate; a vibration motor is provided at the bottom of the receiving plate; limiting rods are provided on both sides of the receiving plate; and limiting holes are provided on both sides of the U-shaped plate. The limiting rods are slidably sleeved inside the limiting holes, and the diameter of the limiting holes is larger than the diameter of the limiting rods.
[0007] Preferably, the box body is symmetrically arranged with moving rollers at the top and bottom. One end of the moving roller is rotatably connected to the inner wall of the box body, and the other end of the moving roller passes through the side wall of the box body through a transmission rod.
[0008] Preferably, a motor plate is provided at the bottom of the housing, a motor is installed on the top of the motor plate, an A gear is provided at the output end of the motor, a B gear is meshed with the surface of the A gear, and the transmission rod of the moving roller is fixedly connected to the A gear and the B gear respectively.
[0009] Preferably, the connecting plate has grooves on both sides, and the inner wall of the U-shaped slider is provided with a limiting block, which is slidably connected to the inside of the groove.
[0010] Preferably, a movable gap is formed between the limiting rod and the limiting hole, and the diameter of the limiting rod is smaller than the diameter of the limiting hole.
[0011] Preferably, the transmission rods of the upper and lower moving rollers extend to the outer walls of both sides of the housing, and the transmission rods form a synchronous rotation structure with gear A and gear B.
[0012] The advantages of this utility model are:
[0013] 1. This utility model achieves dynamic adjustment of the traction tension of the plastic strip through the structural design of the adjustment component. Specifically, an electric push rod drives the U-shaped slider to rise and fall, causing the connecting plate to rotate around the side wall of the housing, thus displacing the fixed cylinder vertically and adjusting the tension of the plastic strip in the guide groove. This design solves the problem of tension instability caused by changes in the elasticity of the plastic strip in the prior art, improves the controllability and stability of the traction process, and avoids the risk of breakage of the plastic strip due to slackness or excessive tightness.
[0014] 2. This utility model achieves both anti-sticking and efficient feeding of plastic strips through the structural design of the feeding assembly. The receiving plate, in conjunction with a spring and a vibration motor, generates high-frequency micro-amplitude vibrations guided by the movement gap between the limiting rod and the limiting hole, causing the plastic strips within the limiting groove to continuously separate. This design solves the problem of plastic strip sticking due to static placement or friction in traditional traction methods, improving feeding efficiency. Simultaneously, the vibration amplitude is controlled by the diameter difference between the limiting hole and the limiting rod, ensuring a stable movement trajectory of the receiving plate. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the box structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the adjustment component structure of this utility model;
[0019] Figure 4 This is a schematic diagram of the feeding component structure of this utility model.
[0020] In the diagram: 1. Box body; 2. Support plate; 3. Adjustment component; 31. Electric push rod; 32. U-shaped slider; 33. Connecting plate; 34. Fixed cylinder; 35. Guide rail groove; 4. Feeding component; 41. U-shaped plate; 42. Spring; 43. Receiving plate; 44. Limiting groove; 45. Vibration motor; 46. Limiting rod; 47. Limiting hole; 5. Slide groove; 6. Limiting block; 7. Motor plate; 8. Motor; 9. Gear A; 10. Gear B; 11. Moving roller. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0022] Please see Figures 1-4 As shown, a traction mechanism for a recycled plastic extruder includes a housing 1, with both the front and back sides of the housing 1 being open. The housing 1 is characterized by: support plates 2 positioned along the two edges of the back side of the housing 1; an adjustment assembly 3 positioned at the top of the support plates 2; and a feeding assembly 4 positioned at the bottom edge of the front side of the housing 1. The adjustment assembly 3 includes an electric push rod 31 fixed to the top of the support plates 2; a U-shaped slider 32 movably connected to the top of the electric push rod 31; a connecting plate 33 slidably connected inside the U-shaped slider 32; and a fixed cylinder with a guide rail groove 35 positioned at one end of the connecting plate 33. 34, the other end is rotatably connected to the side of the box 1; the unloading assembly 4 includes a U-shaped plate 41 fixed to the front of the box 1, springs 42 are provided at the four corners of the inner bottom surface of the U-shaped plate 41, a receiving plate 43 is provided at the top of the springs 42, a limiting groove 44 is provided on the top surface of the receiving plate 43, a vibration motor 45 is provided at the bottom of the receiving plate 43, limiting rods 46 are provided on both sides of the receiving plate 43, and limiting holes 47 are provided on both sides of the U-shaped plate 41. The limiting rods 46 are slidably sleeved inside the limiting holes 47 and the diameter of the limiting holes 47 is larger than the diameter of the limiting rods 46.
[0023] During operation, the support plate 2 of the housing 1 controls the tension of the plastic strips via the top adjustment component 3. The electric push rod 31 of the adjustment component 3 drives the U-shaped slider 32 to rise and fall, causing the connecting plate 33 to rotate around the side of the housing 1, thus displacing the fixed cylinder 34 vertically. The guide rail groove 35 limits and adjusts the tension of multiple plastic strips. The principle is that the electric push rod 31 extends and retracts to change the angle of the connecting plate 33, thereby adjusting the height of the fixed cylinder 34. At the same time, the receiving plate 43 is supported by a spring 42 inside the U-shaped plate 41 of the feeding component 4. The vibration motor 45 drives the receiving plate 43 to vibrate, and the limiting rod 46 slides in the limiting hole 47, causing the plastic strips in the limiting groove 44 to separate. By linking the electric push rod 31 and the connecting plate 33 of the adjustment component 3, the tension of the plastic strips is dynamically adjusted, solving the problem of tension instability caused by elastic changes during traction. The feeding component 4, through the cooperation of the vibration motor 45 and the spring 42, causes the receiving plate 43 to vibrate and separate the adhered plastic strips, improving the feeding efficiency.
[0024] Furthermore, movable rollers 11 are symmetrically arranged inside the box 1, with one end of the movable roller 11 rotatably connected to the inner wall of the box 1, and the other end of the movable roller 11 passing through the side wall of the box 1 via a transmission rod.
[0025] During operation, the symmetrically arranged moving rollers 11 inside the housing 1 pass through the side wall of the housing via a transmission rod. When the plastic strip passes through the gap between the upper and lower moving rollers 11, the moving rollers 11 rotate to assist in traction. The moving rollers 11 are driven to rotate by an external power source, forming a clamping and conveying force on the plastic strip. The bidirectional clamping effect of the upper and lower moving rollers 11 enhances the uniformity of the plastic strip traction and avoids slippage or deviation caused by single-point traction.
[0026] Furthermore, a motor plate 7 is provided at the bottom of the housing 1, a motor 8 is installed on the top of the motor plate 7, an A gear 9 is provided at the output end of the motor 8, a B gear 10 is meshed with the surface of the A gear 9, and the transmission rod of the moving roller 11 is fixedly connected to the A gear 9 and the B gear 10 respectively.
[0027] During operation, motor 8 drives the transmission rod of moving roller 11 to rotate synchronously in opposite directions through gear A 9 and gear B 10 meshing. The synchronous transmission design of the gears ensures that the upper and lower moving rollers 11 rotate at the same speed, forming a stable clamping traction force and preventing the plastic strip from deforming or breaking due to speed differences.
[0028] Furthermore, the connecting plate 33 has grooves 5 on both sides of its edge, and the inner sidewall of the U-shaped slider 32 is provided with a limiting block 6, which is slidably connected to the inside of the groove 5.
[0029] During operation, the groove 5 of the connecting plate 33 cooperates with the limiting block 6 of the U-shaped slider 32 to restrict the horizontal displacement of the connecting plate 33. The limiting block 6 slides along the groove 5, allowing the connecting plate 33 to rise and fall vertically around the rotating end. The cooperation structure of the groove 5 and the limiting block 6 ensures the stability of the adjustment component 3 during the lifting process and avoids tension adjustment deviation caused by the offset of the connecting plate 33.
[0030] Furthermore, a movable gap is formed between the limiting rod 46 and the limiting hole 47, and the diameter of the limiting rod 46 is smaller than the diameter of the limiting hole 47.
[0031] During operation, the gap design between the limiting rod 46 and the limiting hole 47 allows the receiving plate 43 to swing slightly horizontally during vibration. The design that the diameter of the limiting hole 47 is larger than the diameter of the limiting rod 46 not only ensures the vibration freedom of the receiving plate 43, but also prevents the plastic strip from falling out of the limiting groove 44 due to excessive amplitude through the limiting structures 46 and 47.
[0032] Furthermore, the transmission rods of the upper and lower moving rollers 11 extend to the outer walls of both sides of the housing 1, and the transmission rods form a synchronous rotation structure with gear A 9 and gear B 10.
[0033] During operation, the transmission rod of the moving roller 11 extends to the outer walls of both sides of the housing 1 and is fixedly connected to gear A 9 and gear B 10 respectively, forming a synchronous rotation structure. The gears and transmission rods rotate coaxially, driving the moving roller 11 to rotate in the opposite direction. Through the rigid connection between the gears and the transmission rods, the synchronous reverse rotation of the upper and lower moving rollers 11 is ensured, further improving the stability and synchronicity of the plastic strip traction.
[0034] Working principle: The traction mechanism of this recycled plastic extruder drives the U-shaped slider 32 to rise and fall through the electric push rod 31 on the support plate 2 on the back of the housing 1. This causes the connecting plate 33 to rotate around the side of the housing 1, and the fixed cylinder 34 to move up and down along the guide rail groove 35 to adjust the tension of the plastic strip. At the same time, the up and down moving roller 11 inside the housing 1 passes through the side wall through the transmission rod and rotates synchronously in opposite directions with gears A 9 and B 10, clamping and traction plastic strip. The plastic strip then enters the receiving plate 43 limiting groove 44 in the front U-shaped plate 41. The vibration motor 45 drives the receiving plate 43 to vibrate under the support of the spring 42. The limiting rod 46 slides along the limiting hole 47 to guide the receiving plate 43 to sway slightly, realizing the separation of the plastic strip. The sliding groove 5 of the connecting plate 33 cooperates with the limiting block 6 of the U-shaped slider 32 to limit the horizontal displacement and ensure the stability of the vertical adjustment trajectory of the fixed cylinder 34. The gap design between the limiting hole 47 and the limiting rod 46 controls the vibration amplitude of the receiving plate 43. The gear is driven to rotate synchronously in opposite directions through the motor 8, driving the moving roller 11 to form a uniform traction force.
[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A traction mechanism for a recycled plastic extruder, characterized in that: Includes a box body (1), the front and back of the box body (1) are open, the back of the box body (1) is provided with support plates (2) on both sides, the top of the support plates (2) is provided with an adjustment component (3), and the bottom edge of the front of the box body (1) is provided with a feeding component (4). The adjustment component (3) includes an electric push rod (31) fixed on the top of the support plate (2). A U-shaped slider (32) is movably connected to the top of the electric push rod (31). A connecting plate (33) is slidably connected inside the U-shaped slider (32). One end of the connecting plate (33) is provided with a fixed cylinder (34) with a guide rail groove (35), and the other end is rotatably connected to the side of the box body (1). The feeding assembly (4) includes a U-shaped plate (41) fixed to the front of the box (1). Springs (42) are provided at the four corners of the inner bottom surface of the U-shaped plate (41). A receiving plate (43) is provided at the top of the springs (42). A limiting groove (44) is opened on the top surface of the receiving plate (43). A vibration motor (45) is provided at the bottom of the receiving plate (43). Limiting rods (46) are provided on both sides of the receiving plate (43). Limiting holes (47) are opened on both sides of the U-shaped plate (41). The limiting rods (46) are slidably sleeved inside the limiting holes (47) and the diameter of the limiting holes (47) is larger than the diameter of the limiting rods (46).
2. The traction mechanism of a recycled plastic extruder according to claim 1, characterized in that: The box (1) is symmetrically arranged with moving rollers (11) inside. One end of the moving roller (11) is rotatably connected to the inner wall of the box (1), and the other end of the moving roller (11) passes through the side wall of the box (1) through a transmission rod.
3. The traction mechanism of a recycled plastic extruder according to claim 2, characterized in that: The bottom of the box (1) is provided with a motor plate (7), the top of the motor plate (7) is provided with a motor (8), the output end of the motor (8) is provided with an A gear (9), the surface of the A gear (9) is meshed with a B gear (10), and the transmission rod of the moving roller (11) is fixedly connected to the A gear (9) and the B gear (10) respectively.
4. The traction mechanism of a recycled plastic extruder according to claim 1, characterized in that: The connecting plate (33) has grooves (5) on both sides of its edge, and the inner wall of the U-shaped slider (32) is provided with a limiting block (6), which is slidably connected to the inside of the groove (5).
5. The traction mechanism of a recycled plastic extruder according to claim 1, characterized in that: A movable gap is formed between the limiting rod (46) and the limiting hole (47), and the diameter of the limiting rod (46) is smaller than the diameter of the limiting hole (47).
6. The traction mechanism of a recycled plastic extruder according to claim 3, characterized in that: The transmission rods of the upper and lower moving rollers (11) extend to the outer walls of both sides of the housing (1), and the transmission rods form a synchronous rotation structure with gear A (9) and gear B (10).