Clamping device for keeping pultrusion plate horizontal

Abstract

The utility model relates to the technical field of composite material pultrusion, in particular to a clamping device for keeping a pultrusion plate horizontal, which comprises a main frame, a height adjusting assembly, a thickness adjusting assembly, an upper compression roller and a lower compression roller, the lower pressing roller is arranged at the lower end of the interior of the height adjusting assembly, the two ends of the lower pressing roller are correspondingly and rotationally connected with the two sides of the interior of the height adjusting assembly, the upper pressing roller is arranged at the upper end of the interior of the height adjusting assembly, and the thickness adjusting assemblies are arranged at the two ends of the upper pressing roller. Through the arrangement of the main frame, the height adjusting assembly, the thickness adjusting assembly, the upper pressing roller and the lower pressing roller, the gap between the pressing rollers can be adjusted by adjusting the thickness adjusting bolts so as to adapt to pultrusion plates with different thicknesses, and the vertical height of pultrusion products can be adjusted by adjusting the height adjusting bolts so as to adjust the thickness of the pultrusion plates. And the height change of different pultrusion products can be adapted.

Description

Technical Field

[0001] This application relates to the field of composite material pultrusion technology, and more specifically, to a clamping device for keeping pultruded sheets horizontal. Background Technology

[0002] In the pultrusion molding process, the straightness of pultruded products is one of the key parameters for assessing the stability of the pultrusion process and whether the pultruded products meet the standards. This is particularly evident in the sheet production process of pultrusion molding, where poor straightness leads to significant sheet waste, resulting in scrap products. Many factors influence the straightness of pultruded sheets throughout the entire pultrusion process. Current problems arise when the straightness of pultruded sheets exceeds the standard. Applying a force to the left or right using straightness clamps to force a change in straightness and thus correct the product's straightness is problematic. Applying this force causes the sheet to tilt, and if this tilt cannot be corrected, it significantly affects the accurate adjustment of straightness, leading to ineffective straightness control and ultimately compromising product straightness. Utility Model Content

[0003] The purpose of this utility model is to provide a clamping device for keeping pultruded sheets horizontal. It is provided with a main frame, a height adjustment component, a thickness adjustment component, an upper pressure roller and a lower pressure roller. The height adjustment component is located in the middle of the main frame and is slidably connected to the main frame. The lower pressure roller is located in the lower end of the height adjustment component and its two ends are rotatably connected to the two sides of the height adjustment component. The upper pressure roller is located in the upper end of the height adjustment component and its two ends are provided with thickness adjustment components.

[0004] Furthermore, the height adjustment component includes a movable frame and a height adjustment bolt. The two ends of the movable frame are slidably connected to the two sides of the front end of the main frame. The lower end of the height adjustment bolt passes through the middle of the upper end of the main frame and engages with the upper end of the main frame for rotation. The lower end of the height adjustment bolt is connected to the middle of the upper end of the movable frame.

[0005] Furthermore, the thickness adjustment assembly includes a thickness adjustment bolt and a piston block. Piston blocks are provided on both sides of the upper pressure roller, and a thickness adjustment bolt is provided on the outer side of each piston block. The upper end of each thickness adjustment bolt passes through both sides of the upper end of the moving frame and meshes with the moving frame to rotate accordingly.

[0006] Furthermore, sliders are provided on both sides of the rear end of the mobile frame, and straightness guide rails are provided on both sides of the front end of the main frame. Each slider is slidably connected to each straightness guide rail.

[0007] Furthermore, a handwheel is provided at the top of both the height adjusting bolt and the two thickness adjusting bolts.

[0008] Furthermore, fixing through holes are provided on both sides of the lower end of the main frame.

[0009] Compared with existing technologies, this utility model features a main frame, a height adjustment component, a thickness adjustment component, an upper pressure roller, and a lower pressure roller. Through a simple upper and lower pressure roller structure, it ensures that pultruded products remain continuously horizontal, resolving the adverse effects of uneven pultruded sheets on product straightness. This device can adjust the gap between the pressure rollers by adjusting the thickness adjustment bolt to accommodate pultruded sheets of different thicknesses, and it can also adjust the vertical height of the pultruded products by adjusting the height adjustment bolt to accommodate variations in product height. This device meets the needs of multiple applications and scenarios, saves tooling manufacturing costs, and improves production efficiency and yield. Its advantages include: 1. Comprehensive product range and complete functions; 2. Precise adjustment and positioning; 3. Relatively simple principle and low manufacturing cost; 4. Easy to operate and highly efficient; 5. Sturdy, durable, and easy to maintain. Attached Figure Description

[0010] Figure 1 This is an assembly drawing of a clamping device for keeping pultruded sheets horizontal, provided by this utility model;

[0011] Figure 2 This utility model provides a schematic diagram of the use of a clamping device for keeping pultruded sheets horizontal. Figure 1 ;

[0012] Figure 3 This utility model provides a schematic diagram of the use of a clamping device for keeping pultruded sheets horizontal. Figure 2 .

[0013] Reference numerals used in the above figures:

[0014] 1. Main frame; 2. Height adjustment bolt; 3. Thickness adjustment bolt; 4. Upper pressure roller; 5. Lower pressure roller; 6. Moving frame; 7. Slider; 8. Straightness guide rail; 9. Piston block; 10. Pultruded plate. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0017] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model 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. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0018] Reference Figure 1-3 The image shown is a preferred embodiment of the present invention.

[0019] A clamping device for keeping pultruded sheet material horizontal includes a main frame 1, a height adjustment component, a thickness adjustment component, an upper pressure roller 4, and a lower pressure roller 5. The height adjustment component is located inside the middle of the main frame 1 and is slidably connected to the main frame 1. The lower pressure roller 5 is located inside the lower end of the height adjustment component, and its two ends are rotatably connected to the two sides inside the height adjustment component. The upper pressure roller 4 is located inside the upper end of the height adjustment component, and both ends of the upper pressure roller 4 are provided with thickness adjustment components.

[0020] The height adjustment assembly includes a movable frame 6 and a height adjustment bolt 2. The two ends of the movable frame 6 are slidably connected to the front sides of the main frame 1. The lower end of the height adjustment bolt 2 passes through the middle of the upper end of the main frame 1 and engages with the upper end of the main frame 1 for rotation. The lower end of the height adjustment bolt 2 is connected to the middle of the upper end of the movable frame 6. The movable frame 6 is a steel structure, and its main function is to fix the upper and lower pressure rollers to provide structural support. It is connected to the height adjustment bolt 2, the straightness guide rail 8, and the slider 7, thereby connecting the movable frame 6 to the main frame 1 to form a stable and adjustable overall structure. The height adjustment bolt 2 is connected to the main frame 1 and the movable frame 6. Rotating the height adjustment bolt 2 allows the movable frame 6 to move up and down as a whole. The adjustment method can be a screw, gear, or hydraulic system, or any structure capable of vertical adjustment.

[0021] The thickness adjustment assembly includes a thickness adjustment bolt 3 and a piston block 9. Piston blocks 9 are located on both sides of the upper pressure roller 4, and a thickness adjustment bolt 3 is located on the outer side of each piston block 9. The upper end of each thickness adjustment bolt 3 passes through both sides of the upper end of the moving frame 6 and meshes with and rotates with the moving frame 6. The thickness adjustment bolt 3 is connected to the moving frame 6 and the piston block 9. The piston block 9 is placed inside the moving frame 6 and connected to the upper pressure roller 4. By adjusting the thickness adjustment bolt 3, the piston block 9 moves up and down, thereby realizing the up and down movement of the upper pressure roller 4. The piston block 9, placed inside the moving frame 6, is a simple piston motion structure that can smoothly move the upper pressure roller 4 up and down. This structure can also use a cylinder or pads of different thicknesses to achieve stepless adjustment of the upper pressure roller 4.

[0022] The movable frame 6 has sliders 7 on both sides of its rear end, and the main frame 1 has straightness guide rails 8 on both sides of its front end. Each slider 7 is slidably connected to each straightness guide rail 8. The straightness guide rails 8 and sliders 7 can be selected as flat rail sliders or circular rail sliders according to design requirements. Their main function is to connect the movable frame 6 to the main frame 1, allowing for movement while making the structure more stable. In addition, a scale or a vernier caliper can be designed on the straightness guide rail 8, that is, the vernier caliper plate and the reading moving block are fixed on the straightness guide rail 8 and the slider 7 respectively.

[0023] Handwheels are provided at the top of both the height adjusting bolt 2 and the two thickness adjusting bolts 3.

[0024] The main frame 1 has fixing through holes on both sides of its lower end. The main frame 1 is a steel structure, and its strength is sufficient to support the entire device. The main frame 1 is fixed to the pultrusion platform by bolts passing through the fixing through holes on the base plate.

[0025] Without horizontal clamping, when the straightness of the composite material sheet produced by pultrusion exceeds the tolerance, it is necessary to adjust the straightness clamping rollers in the die exit direction to move the pultruded plate 10 to the left or right, forcing a change in the straightness of the pultruded plate 10, thereby adjusting the straightness of the pultruded plate 10. However, when adjusting the pultruded plate 10 left or right, because the pultruded product is a sheet material, the pultruded plate 10 will twist and tilt horizontally when subjected to the left or right thrust of the straightness clamping. This phenomenon will partly gradually recover flatness over time, and partly continue to remain in this state. However, the unevenness of the pultruded plate 10 will have a significant impact on the accuracy of straightness adjustment. Different degrees of twisting of the pultruded plate 10 result in different straightness adjustment feedback, leading to relatively large straightness adjustment errors. This horizontal clamping is to provide a horizontal clamping force to the pultruded plate 10 by the upper pressure roller 4 and the lower pressure roller 5 when adjusting the straightness of the pultruded plate 10, ensuring that the pultruded plate 10 is horizontal and avoiding the influence of twisting on the straightness.

[0026] This device can adapt to pultruded plates 10 of different thicknesses. By rotating the thickness adjustment bolt 3, the piston block 9 is driven to move up and down. At the same time, the piston block 9 is connected to both ends of the upper pressure roller 4, thereby realizing the adjustment of the up and down movement of the upper pressure roller 4. At this time, the lower pressure roller 5 is in a fixed state, thus realizing the change of the gap height between the two pressure rollers to adapt to the process control of pultruded plates 10 of different thicknesses.

[0027] This device can adapt to process control of different pultrusion die heights or thicknesses. By rotating the height adjustment bolt 2, the moving frame 6 drives the slider 7 to move up and down in the vertical direction within the main frame 1 along the straightness guide rail 8 with a scale. At the same time, the upper pressure roller 4 and the lower pressure roller 5 are placed within the moving frame 6, thereby realizing the overall up and down movement of the upper and lower pressure rollers. That is, the vertical height position of the pultrusion plate 10 is adjustable to adapt to the problem of inconsistent die cavity (i.e., pultrusion plate 10) height caused by different die heights or different die thicknesses.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A clamping device for keeping pultruded sheets horizontal, characterized in that, It includes a main frame (1), a height adjustment component, a thickness adjustment component, an upper pressure roller (4), and a lower pressure roller (5). The height adjustment component is located in the middle of the main frame (1) and is slidably connected to the main frame (1). The lower pressure roller (5) is located in the lower end of the height adjustment component, and both ends of the lower pressure roller (5) are rotatably connected to the two sides inside the height adjustment component. The upper pressure roller (4) is located in the upper end of the height adjustment component, and both ends of the upper pressure roller (4) are provided with thickness adjustment components.

2. The clamping device for keeping pultruded sheet horizontal according to claim 1, characterized in that, The height adjustment assembly includes a movable frame (6) and a height adjustment bolt (2). The two ends of the movable frame (6) are slidably connected to the front sides of the main frame (1). The lower end of the height adjustment bolt (2) passes through the middle of the upper end of the main frame (1) and meshes with the upper end of the main frame (1) and rotates accordingly. The lower end of the height adjustment bolt (2) is connected to the middle of the upper end of the movable frame (6).

3. A clamping device for keeping pultruded sheets horizontal according to claim 2, characterized in that, The thickness adjustment assembly includes a thickness adjustment bolt (3) and a piston block (9). The upper pressure roller (4) is provided with piston blocks (9) on both sides. Each piston block (9) is provided with a thickness adjustment bolt (3) on its outer side. The upper end of each thickness adjustment bolt (3) passes through both sides of the upper end of the moving frame (6) and meshes with the moving frame (6) to rotate.

4. A clamping device for keeping pultruded sheets horizontal according to claim 3, characterized in that, The movable frame (6) has sliders (7) on both sides of its rear end, and the main frame (1) has straightness guide rails (8) on both sides of its front end. Each slider (7) is slidably connected to each straightness guide rail (8).

5. A clamping device for keeping pultruded sheet horizontal according to claim 4, characterized in that, The height adjusting bolt (2) and the two thickness adjusting bolts (3) are each equipped with a handwheel at the top.

6. A clamping device for keeping pultruded sheet horizontal according to claim 5, characterized in that, The main frame (1) has fixing through holes on both sides of its lower end.

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