Automatic clamping device of foaming machine

Abstract

The utility model relates to the technical field of automotive trim material production equipment, in particular to an automatic clamping device of a foaming machine, which comprises a power box and a clamping plate, the rear end of the power box is connected with a traction head, the two sides of the top and bottom in the power box are slidably connected with moving plates, and the front ends of the moving plates are connected with connecting plates. The adjacent sides of the front portions of the two connecting plates are rotationally connected with a connecting base, the clamping plates are fixedly connected with the connecting base, the connecting plates are clamped by the clamping plates, the separated sides of the two clamping plates are both connected with fixing bases, the middles of the fixing bases are in threaded connection with adjusting screws, the clamping plates are slidably connected with pressing plates, and the cambered surfaces of the side edges of the pressing plates are connected with protruding blocks. The protruding block is slidably connected into the clamping plate, the pressing plate is in extrusion fit with the connecting plate, and the end of the adjusting screw is rotationally connected with the pressing plate. The clamping plate can freely rotate around the axis through running fit of the connecting base and the connecting plate, the clamping plate can accurately avoid a mold protruding structure, it is ensured that the clamp is completely attached to the surface of a material, and the yield of the foaming technology is increased.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive interior material production equipment, and in particular to an automatic clamping device for a foaming machine. Background Technology

[0002] With the automotive industry's increasing demands for lightweighting and comfort, foamed materials such as polyurethane and polypropylene are widely used in the production of interior components such as car seats, dashboards, and door panels due to their lightweight, shock absorption, and sound insulation properties. The foaming molding process, which involves injecting liquid raw materials into a mold and allowing them to foam and solidify, allows for precise control of material density and structural morphology. However, this process requires stable clamping and traction of the material substrate to avoid problems such as uneven foam layer thickness and surface defects caused by displacement or deformation.

[0003] In the prior art, a traction device for a foaming machine for automotive interior materials (publication number CN221584296U) uses symmetrically arranged clamping arms in conjunction with a pneumatic drive mechanism to clamp and fix the substrate. This device employs a rigid clamp and a linear traction path design, which achieves basic clamping functionality. However, its clamping angle and contact surface direction are fixed, requiring manual adjustment of the relative position between the substrate and the clamp to adapt to different mold structures. In actual production, it has been found that automotive interior parts often have complex shapes with irregular contours or protruding structures. When the substrate surface has features such as injection-molded reinforcing ribs or embedded inserts, the fixed clamping arms are prone to spatial interference with adjacent parts, causing the clamping area to be forced to shift to a non-ideal position, significantly reducing the effective contact area.

[0004] Furthermore, existing clamping devices lack dynamic adjustment capabilities, requiring repeated calibration of the parallelism between the substrate and the clamp before clamping operations. Otherwise, excessive local clamping force can cause indentations or even tearing on the substrate surface. In addition, due to mold layout limitations, traditional clamps cannot avoid the range of motion of adjacent robotic arms or feeding mechanisms during multi-station collaborative operations, resulting in extended production line cycle times and restricting the efficiency of the foaming process and the yield of finished products. Utility Model Content

[0005] To overcome the drawback of non-adjustable angle, this utility model provides an automatic clamping device for a foaming machine, aiming to solve the above-mentioned shortcomings.

[0006] An automatic clamping device for a foaming machine includes a power box and clamping plates. A traction head is connected to the rear end of the power box. Movable plates are slidably connected to both the top and bottom sides of the power box. A power assembly for driving the two movable plates to move towards the center is provided inside the power box. A connecting plate is connected to the front end of each movable plate. A connecting seat is rotatably connected to the adjacent front sides of the two connecting plates. The clamping plate is fixedly connected to the connecting seat and clamps the connecting plate. A fixed seat is connected to the opposite side of each clamping plate. An adjusting screw is threadedly connected to the middle of the fixed seat. A pressure plate is slidably connected to the clamping plate. A protrusion is connected to the arc surface of the side of the pressure plate and slidably connected inside the clamping plate. The pressure plate and the connecting plate are pressed together. The end of the adjusting screw is rotatably connected to the pressure plate.

[0007] Furthermore, each of the two clamping plates is connected to a plurality of sleeve seats on an adjacent side. Each sleeve seat is slidably connected to a contact rod, and a return spring is provided inside the sleeve seat. One end of the return spring is connected to the contact rod, and the other end is connected inside the sleeve seat.

[0008] Furthermore, a protective pad is connected to the end of the contact rod away from the sleeve seat.

[0009] Furthermore, a spring pad is provided at the point where the connecting plate and the pressure plate are pressed together.

[0010] Furthermore, a baffle is connected to the adjacent side of the rear end of the two clamping plates.

[0011] Furthermore, both ends of the telescopic tube are connected to the two clamping plates.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] The clamping plate can rotate freely around the axis by rotating the connecting seat and the connecting plate. The adjusting screw drives the pressure plate to move axially, and the elastic deformation characteristics of the spring pad form an adjustable friction locking mechanism, thereby achieving stepless angle adjustment. This can accurately avoid the mold protrusion structure and ensure that the clamp and the material surface are completely in contact, ultimately significantly improving the yield and production efficiency of the foaming process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the installation structure of the clamping plate and telescopic tube of this utility model.

[0016] Figure 3 This is a cross-sectional view showing the connection relationship between the connecting plate and the connecting seat of this utility model.

[0017] Figure 4 This is a cross-sectional view showing the connection relationship between the pressure plate and the protrusion of this utility model.

[0018] Figure 5 This is a cross-sectional view showing the connection relationship between the contact rod and the return spring of this utility model.

[0019] Reference numerals: 1_Traction head, 2_Power box, 3_Moving plate, 4_Connecting plate, 5_Clamping plate, 6_Connecting seat, 7_Pressure plate, 8_Protrusion, 9_Fixed seat, 10_Adjusting screw, 11_Sleeve seat, 12_Contact rod, 13_Reset spring, 14_Protective pad, 15_Spring pad, 16_Baffle, 17_Telescopic tube. Detailed Implementation

[0020] The present invention will now be described more fully below with reference to the accompanying drawings, in which presently preferred embodiments of the invention are shown. However, the present invention can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and to fully convey the scope of the invention to those skilled in the art.

[0021] Example: An automatic clamping device for a foaming machine, such as Figures 1-4 As shown, the device includes a traction head 1, a power box 2, a movable plate 3, a connecting plate 4, a clamping plate 5, a connecting seat 6, a pressure plate 7, a protrusion 8, a fixed seat 9, and an adjusting screw 10. The traction head 1 is connected to the rear end of the power box 2. Movable plates 3 are slidably connected to both the top and bottom sides of the power box 2. The power box 2 is equipped with a power assembly for driving the two movable plates 3 to move towards the center. The traction head 1 is rigidly connected to the power box 2. After clamping, it drives the entire device to move along a preset track, accurately conveying the clamped material to the foaming station. Each plate 3 has a connecting plate 4 connected to its front end. The two connecting plates 4 are rotatably connected to a connecting seat 6 on their adjacent front sides. The clamping plate 5 is fixedly connected to the connecting seat 6 and clamps the connecting plate 4. The two clamping plates 5 are connected to a fixing seat 9 on their opposite sides. The fixing seat 9 is threaded with an adjusting screw 10 in the middle. The clamping plate 5 is slidably connected to a pressure plate 7. The pressure plate 7 has a protrusion 8 connected to its side arc surface. The protrusion 8 is slidably connected inside the clamping plate 5. The pressure plate 7 and the connecting plate 4 are pressed together. The end of the adjusting screw 10 is rotatably connected to the pressure plate 7.

[0022] like Figure 2 and Figure 5 As shown, it also includes a sleeve seat 11, a contact rod 12, and a return spring 13. Several sleeve seats 11 are connected to each other on one side of the two clamping plates 5. The sleeve seat 11 is slidably connected to the contact rod 12. The return spring 13 is provided inside the sleeve seat 11. One end of the return spring 13 is connected to the contact rod 12, and the other end is connected to the sleeve seat 11. This elastic connection structure can be adapted to materials of different shapes to ensure the clamping effect.

[0023] like Figure 2 As shown, it also includes a protective pad 14. The end of the contact rod 12 away from the sleeve seat 11 is connected to the protective pad 14, which is made of flexible material and covers the end of the contact rod 12 to prevent the metal parts from directly scratching the material surface, while increasing the friction to prevent slippage.

[0024] like Figure 3 and Figure 4 As shown, the spring pad 15 is located at the contact interface between the connecting plate 4 and the pressure plate 7. When the adjusting screw 10 is tightened, the pressure plate 7 axially presses the spring pad 15 to produce elastic deformation, which not only compensates for the assembly clearance of the rotating pair, but also achieves a self-locking function by increasing the friction coefficient, so that the adjusted clamping plate 5 can still maintain angular stability under vibration conditions.

[0025] like Figure 1 and Figure 2 As shown, it also includes a baffle 16. The baffle 16 is connected to the side of the two clamping plates 5 adjacent to each other at the rear end, which limits the maximum closing distance of the clamping plates 5, prevents the material from being excessively inserted into the power box 2, and protects components such as the telescopic tube 17 from mechanical interference.

[0026] like Figure 1 and Figure 2 As shown, it also includes a telescopic tube 17, both ends of which are connected to two clamping plates 5. It is located on the rear side of the baffle 16 and connects the two clamping plates 5. It extends and retracts synchronously during clamping / releasing to maintain the parallel movement of the clamping plates 5 on both sides and prevent external impurities from entering the device and affecting the transmission.

[0027] The staff places the interior material between two clamping plates 5. The power box 2 drives the moving plate 3 to slide towards the middle, which in turn drives the connecting plate 4 and clamping plate 5 to clamp the material in the middle. The protective pad 14 at the end of the contact rod 12 contacts the material. As the two clamping plates 5 approach each other, they squeeze the contact rod 12. The contact rod 12 slides along the sleeve seat 11, compressing the return spring 13. The sleeve assembly of the telescopic tube 17 moves axially with the opposite movement of the clamping plates 5. The baffle 16 limits the distance of the clamped material to prevent the material from being inserted into the power box 2, thus completing the clamping of the material. Finally, the traction head 1 moves the material clamped by the power box 2, and the foaming machine produces automotive interior foam material. Then, the clamped material is released. The power box 2 drives the connecting plate 4 and clamping plate 5 to separate to both sides through the moving plate 3. The return spring 13 rebounds and pushes the contact rod 12 to slide and reset in the sleeve seat 11.

[0028] If the clamping angle affects the insertion of the clamping plate 5, adjust the angle between the clamping plate 5 and the connecting plate 4, loosen the adjusting screw 10, reduce the pressure between the pressure plate 7 and the connecting plate 4, and allow the pressure plate 7 to slide within the clamping plate 5 via the protrusion 8. The pressure plate 7 releases the pressure on the spring pad 15, allowing the clamping plate 5 to rotate around the connecting plate 4 via the connecting seat 6. Adjust the angle of the clamping plate 5. After adjustment, tighten the adjusting screw 10, and the adjusting screw 10 moves towards the pressure plate 7 via the fixing seat 9. The pressure plate 7 slides within the clamping plate 5 via the protrusion 8. After adjustment, re-press the spring pad 15. The flexible spring pad 15 adheres to the connecting plate 4 and the pressure plate 7 through elastic deformation, generating sufficient friction to stabilize the connection between the connecting plate 4 and the clamping plate 5, thereby completing the adjustment of the angle of the clamping plate 5.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. An automatic clamping device for a foaming machine, characterized in that: The device includes a power box (2) and a clamping plate (5). A traction head (1) is connected to the rear end of the power box (2). Movable plates (3) are slidably connected to both the top and bottom sides of the power box (2). A power assembly for driving the two movable plates (3) to move towards the center is provided inside the power box (2). Connecting plates (4) are connected to the front ends of the movable plates (3). Connecting seats (6) are rotatably connected to the adjacent front sides of the two connecting plates (4). The clamping plate (5) is fixedly connected to the connecting seat (6). The clamping plate (5) clamps the connecting plate (4). The two clamping plates (5) are connected to a fixed seat (9) on the opposite side. The fixed seat (9) is threaded with an adjusting screw (10) in the middle. The clamping plate (5) is slidably connected to a pressure plate (7). The side arc surface of the pressure plate (7) is connected to a protrusion (8). The protrusion (8) is slidably connected inside the clamping plate (5). The pressure plate (7) and the connecting plate (4) are pressed together. The end of the adjusting screw (10) is rotatably connected to the pressure plate (7).

2. The automatic clamping device for a foaming machine according to claim 1, characterized in that: Each of the two clamping plates (5) is connected to a number of sleeve seats (11) on one side of each adjacent side. The sleeve seats (11) are slidably connected to contact rods (12). A return spring (13) is provided inside the sleeve seats (11). One end of the return spring (13) is connected to the contact rod (12), and the other end is connected inside the sleeve seats (11).

3. The automatic clamping device for a foaming machine according to claim 2, characterized in that: The end of the contact rod (12) away from the sleeve seat (11) is connected to a protective pad (14).

4. An automatic clamping device for a foaming machine according to claim 3, characterized in that: A spring pad (15) is provided at the point where the connecting plate (4) and the pressure plate (7) are pressed together.

5. An automatic clamping device for a foaming machine according to claim 4, characterized in that: A baffle (16) is connected to the adjacent side of the rear end of the two clamping plates (5).

6. An automatic clamping device for a foaming machine according to claim 5, characterized in that: Both ends of the telescopic tube (17) are connected to the two clamping plates (5).

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