Sheet traction mechanism
By introducing a limit ring and a positioning mechanism into the sheet traction mechanism, the problem of lateral offset during sheet traction is solved, achieving stable sheet conveying and improved product quality. It has a wide range of applications and is easy to maintain.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHUZHOU JINWEI EXTRUSION EQUIPMENT CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-14
AI Technical Summary
After prolonged use, the accuracy of existing sheet traction mechanisms decreases, causing lateral displacement of the sheet during traction, resulting in uneven force distribution and affecting product quality.
A sheet traction mechanism was designed, which uses a limit ring and a positioning mechanism in conjunction. By adjusting the spacing of the limit rings and the pressure adjustment device, the sheet is ensured not to tilt during the traction process and can adapt to sheets of different widths. The limit rings are detachable for easy maintenance.
It effectively prevents the sheet from tilting during the traction process, improves the consistency of product quality, has a wide range of applications, and the limit ring is detachable for easy maintenance.
Smart Images
Figure CN224116673U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection molding processing technology, and in particular to a sheet traction mechanism. Background Technology
[0002] In the production process of injection molded sheets, a traction mechanism is usually used. When the sheet is extruded from the die head and is in a soft state, the traction mechanism applies a constant tension to the sheet to prevent the sheet from stretching, deforming, or breaking due to its own weight or uneven tension.
[0003] Some traction mechanisms integrate cooling functions (such as water-cooled pipes connected inside the cooling aluminum rollers) to further cool the sheet during traction, accelerate shaping, and improve production efficiency. Existing traction mechanisms generally include upper and lower pressure rollers. The power roller, driven by a motor, rotates and works with the upper pressure roller to clamp the sheet. Friction propels the sheet forward, ensuring the conveying speed matches the extrusion speed. After prolonged use, the accuracy of the traction mechanism may decrease. Specifically, during guidance, the sheet may shift laterally. This lateral shift leads to uneven stress on the traction rollers, cooling rollers, and other equipment, causing localized stretching or compression deformation, thus affecting the quality of the processed product. Utility Model Content
[0004] To address the aforementioned problems, this utility model proposes a sheet traction mechanism to overcome the shortcomings of existing methods.
[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a sheet traction mechanism, including two side plates, a power roller between the two side plates, and a cooling aluminum roller in front of the power roller, both the power roller and the cooling aluminum roller being rotatably connected to the side plates;
[0006] A pressure roller is located directly above the power roller, and a lifting device for adjusting the pressure between the pressure roller and the power roller is located on the top of the side plate;
[0007] Two limiting rings are fitted on the outer side of the cooling aluminum roller. The limiting rings are slidably connected to the cooling aluminum roller. A positioning mechanism for adjusting the distance between the two limiting rings is provided between the two side plates. The positioning mechanism is detachably connected to the limiting rings, and the limiting rings are detachably connected to the cooling aluminum roller.
[0008] A further improvement is that the lifting device includes a cover plate, which is fixedly mounted on the upper end of two side plates. Two sets of cylinders are fixedly mounted on the upper end of the cover plate, and a slider is fixedly mounted on the output end of the cylinder. The slider is rotatably mounted on the left and right ends of the pressure roller.
[0009] A further improvement is that a guide rail is provided on the side of the side plate near the pressure roller, the guide rail is fixedly connected to the side plate, and the slider is slidably connected to the guide rail.
[0010] A further improvement is made in that: the positioning mechanism includes a double-ended screw and a screw motor. The screw motor is fixedly mounted on the outside of the side plate, and the double-ended screw is rotatably mounted between the two side plates. The output end of the screw motor is fixedly connected to the double-ended screw. Two nut seats are sleeved on the outside of the double-ended screw. The two nut seats are engaged with the positive and negative threads on the outside of the double-ended screw. The nut seats are detachably connected to the limiting ring.
[0011] A further improvement is that: the left and right sides of the nut seat are provided with first bolt lugs, the first bolt lugs are fixedly connected to the nut seat, the first bolt lugs are equipped with first fixing bolts, and the first fixing bolts are threadedly connected to bolt holes opened on the outside of the limiting ring.
[0012] A further improvement is that the limiting ring includes two mutually mating sleeves, and a second lug is provided on the side of the sleeve away from the nut seat. The second lug is fixedly connected to the sleeve, and the two second lugs are fixedly connected to each other by a second fixing bolt.
[0013] A further improvement is that the two side panels are equipped with multiple horizontal braces, and the left and right ends of the horizontal braces are fixedly connected to the side panels.
[0014] A further improvement is that a feeding plate is provided between the two side plates. The feeding plate is placed between the power roller and the cooling aluminum roller, and the left and right ends of the feeding plate are fixedly connected to the side plates.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] As the sheet passes over the cooling aluminum roller, the limiting rings limit it from both sides to prevent it from tilting when it is sent out. The distance between the two limiting rings is controlled by the positioning mechanism, which can match sheets of different widths. It has a wide range of applications, and the detachable installation method of the limiting rings facilitates subsequent maintenance and replacement. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a structural diagram of the cover plate in this utility model.
[0019] Figure 2 This is a structural diagram of the side plate in this utility model.
[0020] Figure 3 This is a structural diagram of the hoop in this utility model.
[0021] The components are: 1. Side plate; 2. Cross brace; 3. Cover plate; 4. Pressure roller; 5. Power roller; 6. Cooling aluminum roller; 7. Feeding plate; 8. Cylinder; 9. Guide rail; 10. Slider; 11. Double-ended screw; 12. Screw motor; 13. Limiting ring; 14. Nut seat; 16. First bolt lug; 17. First fixing bolt; 18. Hoop; 19. Second bolt lug; 20. Second fixing bolt. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0023] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a sheet traction mechanism, including two side plates 1, a power roller 5 between the two side plates 1, and a cooling aluminum roller 6 in front of the power roller 5. Both the power roller 5 and the cooling aluminum roller 6 are rotatably connected to the side plates 1.
[0024] A pressure roller 4 is provided directly above the power roller 5, and a lifting device for adjusting the pressure between the pressure roller 4 and the power roller 5 is provided on the top of the side plate 1.
[0025] The sheet material to be pulled passes between the pressure roller 4 and the power roller 5. The cooling aluminum roller 6 guides the sheet material and, through the connection of a water-cooling pipe, pre-cools it. The lifting device adjusts the preload between the pressure roller 4 and the power roller 5 to ensure that the sheet material is in close contact with both rollers. The motor on the outer side of the side plate 1 controls the rotation of the power roller 5, which, in turn, works with the pressure roller 4 to pull the sheet material.
[0026] Two limiting rings 13 are sleeved on the outer side of the cooling aluminum roller 6. The limiting rings 13 are slidably connected to the cooling aluminum roller 6. A positioning mechanism for adjusting the distance between the two limiting rings 13 is provided between the two side plates 1. The positioning mechanism is detachably connected to the limiting rings 13. The limiting rings 13 are detachably connected to the cooling aluminum roller 6.
[0027] When the sheet passes over the cooling aluminum roller 6, the limiting ring 13 will limit it from the left and right sides to prevent it from tilting when it is sent out. The distance between the two limiting rings 13 is controlled by the positioning mechanism, which can match sheets of different widths. It has a wide range of applications, and the detachable installation method of the limiting ring 13 facilitates subsequent maintenance and replacement.
[0028] Regarding the landing gear:
[0029] The lifting device includes a cover plate 3, which is fixedly mounted on the upper ends of two side plates 1. Two sets of cylinders 8 are fixedly mounted on the upper end of the cover plate 3, and sliders 10 are fixedly mounted on the output ends of the cylinders 8. The sliders 10 are rotatably mounted on the left and right ends of the pressure roller 4. The height of the pressure roller 4 is controlled by the cylinders 8 on the top of the cover plate 3. The two sets of cylinders 8 work together to ensure that the pressure roller 4 remains horizontal and the pressure is evenly distributed during adjustment.
[0030] To improve the stability of the pressure roller 4 adjustment, a guide rail 9 is provided on the side plate 1 near the pressure roller 4. The guide rail 9 is fixedly connected to the side plate 1, and the slider 10 is slidably connected to the guide rail 9. When the cylinder 8 pushes the slider 10 down, the slider 10 will slide along the guide rail 9. The guide rail 9, in cooperation with the slider 10, limits the pressure roller 4 from both the left and right ends.
[0031] Regarding positioning agencies:
[0032] The positioning mechanism includes a double-ended screw 11 and a screw motor 12. The screw motor 12 is fixedly mounted on the outside of the side plate 1, and the double-ended screw 11 is rotatably mounted between the two side plates 1. The output end of the screw motor 12 is fixedly connected to the double-ended screw 11. Two nut seats 14 are sleeved on the outside of the double-ended screw 11, and the two nut seats 14 engage with the positive and negative threads on the outside of the double-ended screw 11. The nut seats 14 are detachably connected to the limiting rings 13. The screw motor 12 controls the rotation of the double-ended screw 11. During the rotation of the double-ended screw 11, it engages with the two nut seats 14, causing the two nut seats 14 to move along its shaft. Due to the different directions of the threads on the outside of the double-ended screw 11, when the double-ended screw 11 rotates, the two nut seats 14 will move in opposite directions. By moving, the nut seats 14 adjust the distance between the two limiting rings 13, ensuring that the sheet material can be guided to the center of the cooling aluminum roller 6.
[0033] Specifically, the nut seat 14 has first lugs 16 on both the left and right sides, which are fixedly connected to the nut seat 14. First fixing bolts 17 are fitted onto the first lugs 16 and are threadedly connected to bolt holes on the outside of the limiting ring 13. When removing the limiting ring 13 from the nut seat 14, the first fixing bolts 17 on the first lugs 16 are simply unscrewed from the bolt holes on the outside of the limiting ring 13.
[0034] More specifically, the limiting ring 13 includes two mating sleeves 18. Each sleeve 18 has a second lug 19 on the side furthest from the nut seat 14. The second lug 19 is fixedly connected to the sleeve 18, and the two second lugs 19 are fixedly connected to each other by a second fixing bolt 20. When removing the limiting ring 13 from the nut seat 14, first release the first fixing bolt 17 from the sleeve 18, and then release the second fixing bolt 20 from the two sleeves 18.
[0035] To enhance the structural strength of the entire traction mechanism, multiple cross braces 2 are provided on the two side plates 1, with the left and right ends of the cross braces 2 fixedly connected to the side plates 1. Fixed connections include riveting, welding, bolting, and other connection methods, which will not be elaborated upon here.
[0036] To facilitate the feeding of the sheet onto the power roller 5, a sheet feeding support plate 7 is provided between the two side plates 1. The sheet feeding support plate 7 is placed between the power roller 5 and the cooling aluminum roller 6, and the left and right ends of the sheet feeding support plate 7 are fixedly connected to the side plates 1.
[0037] How this application works:
[0038] The sheet material to be pulled passes between the pressure roller 4 and the power roller 5. The cooling aluminum roller 6 guides the sheet material and, through the connection of a water-cooling pipe, pre-cools it. The lifting device adjusts the preload between the pressure roller 4 and the power roller 5 to ensure that the sheet material is in close contact with them. The motor on the outer side of the side plate 1 controls the rotation of the power roller 5, which, in turn, works with the pressure roller 4 to pull the sheet material. As the sheet material passes over the cooling aluminum roller 6, the limiting rings 13 limit it from both sides to prevent it from tilting when being delivered outwards. The distance between the two limiting rings 13 is controlled by a positioning mechanism, allowing it to match sheets of different widths. This wide applicability, combined with the detachable installation of the limiting rings 13, facilitates subsequent maintenance and replacement.
[0039] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0040] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.
Claims
1. A sheet traction mechanism, comprising two side plates (1), wherein a power roller (5) is disposed between the two side plates (1), characterized in that, A cooling aluminum roller (6) is provided in front of the power roller (5), and both the power roller (5) and the cooling aluminum roller (6) are rotatably connected to the side plate (1). A pressure roller (4) is provided directly above the power roller (5), and a lifting device is provided on the top of the side plate (1) for adjusting the pressure between the pressure roller (4) and the power roller (5); Two limiting rings (13) are sleeved on the outer side of the cooling aluminum roller (6). The limiting rings (13) are slidably connected to the cooling aluminum roller (6). A positioning mechanism for adjusting the distance between the two limiting rings (13) is provided between the two side plates (1). The positioning mechanism is detachably connected to the limiting rings (13). The limiting rings (13) are detachably connected to the cooling aluminum roller (6).
2. The sheet traction mechanism according to claim 1, characterized in that: The lifting device includes a cover plate (3), which is fixedly installed on the upper ends of the two side plates (1). Two sets of cylinders (8) are fixedly installed on the upper end of the cover plate (3). A slider (10) is fixedly installed at the output end of the cylinder (8). The slider (10) is rotatably installed on the left and right ends of the pressure roller (4).
3. The sheet traction mechanism according to claim 2, characterized in that: The side plate (1) is provided with a guide rail (9) on the side near the pressure roller (4). The guide rail (9) is fixedly connected to the side plate (1), and the slider (10) is slidably connected to the guide rail (9).
4. The sheet traction mechanism according to claim 1, characterized in that: The positioning mechanism includes a double-ended screw (11) and a screw motor (12). The screw motor (12) is fixedly disposed on the outside of the side plate (1). The double-ended screw (11) is rotatably disposed between the two side plates (1). The output end of the screw motor (12) is fixedly connected to the double-ended screw (11). Two nut seats (14) are sleeved on the outside of the double-ended screw (11). The two nut seats (14) are engaged with the positive and negative threads on the outside of the double-ended screw (11). The nut seats (14) are detachably connected to the limiting ring (13).
5. A sheet traction mechanism according to claim 4, characterized in that: The nut seat (14) has first bolt lugs (16) on its left and right sides. The first bolt lugs (16) are fixedly connected to the nut seat (14). A first fixing bolt (17) is mounted on the first bolt lugs (16). The first fixing bolt (17) is threadedly connected to the bolt hole opened on the outside of the limiting ring (13).
6. A sheet traction mechanism according to claim 5, characterized in that: The limiting ring (13) includes two mutually mating sleeves (18). The sleeves (18) are provided with a second lug (19) on the side away from the nut seat (14). The second lug (19) is fixedly connected to the sleeves (18), and the two second lugs (19) are fixedly connected to each other by a second fixing bolt (20).
7. A sheet traction mechanism according to claim 1, characterized in that: The two side plates (1) are provided with multiple cross braces (2), and the left and right ends of the cross braces (2) are fixedly connected to the side plates (1).
8. A sheet traction mechanism according to claim 1, characterized in that: A feeding plate (7) is provided between the two side plates (1). The feeding plate (7) is placed between the power roller (5) and the cooling aluminum roller (6). The left and right ends of the feeding plate (7) are fixedly connected to the side plates (1).