Press-fit welding device for plastic sheets

Abstract

The utility model discloses a press-fit welding device for plastic sheets. The press-fit welding device comprises a rack, an upper press-fit assembly, a lower press-fit assembly, a pair of downward pressing air cylinders and a fixing assembly, and the upper press-fit assembly comprises a first pressing roller rotationally arranged on the rack, a driven gear coaxially arranged on the first pressing roller in a sleeving mode and a pair of first press-fit discs; the lower pressing assembly is arranged below the upper pressing assembly, the lower pressing assembly comprises a second pressing roller rotationally arranged on the rack, a driving gear coaxially arranged on the second pressing roller in a sleeving mode and a pair of second pressing discs, and the driving gear and a driven gear are located on the outer side of the rack in an up-down opposite mode; the pair of pressing cylinders drives the first pressing roller to be switched between a first position where the driven gear is meshed with the driving gear and a second position where the driven gear is separated from the driving gear, and a pressure regulating valve is mounted at an air inlet of each pressing cylinder; when the first pressing roller is located at the first position, a gap is formed between the fixing assembly and the first pressing roller, and when the first pressing roller is located at the second position, the fixing assembly abuts against the first pressing roller.

Description

Technical Field

[0001] The present application relates to the technical field of plastic heating welding equipment, and in particular to a compression welding device for plastic sheets. Background Art

[0002] Currently, many plastic products need to be formed by hot pressing plastic sheets. The existing pressing device uses two upper and lower pressing discs to press the plastic sheets to achieve hot pressing. However, during the pressing process, the upper pressing disc may deviate when it is raised and lowered, and the gears may get stuck, affecting production efficiency and quality. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of this application is to provide a compression welding device for plastic sheets.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solution: a compression welding device for plastic sheets, comprising:

[0005] The frame includes a pair of wall panels arranged opposite to each other on the left and right sides;

[0006] An upper pressing assembly comprises a first pressing roller rotatably mounted on the frame, a driven gear coaxially sleeved on the first pressing roller, and a pair of first pressing discs, wherein the driven gear is located outside the pair of wall panels;

[0007] A lower pressing assembly is arranged below the upper pressing assembly, and the lower pressing assembly includes a second pressing roller rotatably arranged on the frame, a driving gear coaxially sleeved on the second pressing roller, and a pair of second pressing discs, the driving gear is located on the outside of the pair of wall panels, and the driven gear and the driving gear are arranged opposite to each other in an upper and lower direction;

[0008] a pair of downward pressure cylinders, respectively mounted on the pair of wall panels, the pair of downward pressure cylinders being in driving connection with the first pressure roller to drive the first pressure roller to switch between a first position where the driven gear is engaged with the driving gear and a second position where the driven gear is disengaged from the driving gear, and a pressure regulating valve being installed at an air inlet of each downward pressure cylinder; and

[0009] A fixing assembly is mounted on the frame and is located on the upper side of the first pressure roller. When the first pressure roller is in the first position, there is a gap between the fixing assembly and the first pressure roller. When the first pressure roller is in the second position, the fixing assembly abuts against the first pressure roller.

[0010] In the above technical solution, it is further preferred that the pair of first pressing discs are spaced apart along the extension direction of the first pressing roller and are located between the pair of wall panels.

[0011] In the above technical solution, it is further preferred that a first clamping seat is provided between the pair of first pressing discs.

[0012] In the above technical solution, it is further preferred that the pair of second pressing discs are spaced apart along the extension direction of the second pressing roller and are located between the pair of wall panels.

[0013] In the above technical solution, it is further preferred that a second clamping seat is provided between the pair of second pressing discs.

[0014] In the above technical solution, it is further preferred that the fixing assembly is located on the outside of the pair of wall panels, and the fixing assembly is arranged on the same side as the driving gear and the driven gear.

[0015] In the above technical solution, it is further preferred that the fixing assembly includes at least one supporting spring, a pad and a fixing plate connected to the bottom of the pad, the at least one supporting spring extends in the up and down directions, the at least one supporting spring is connected between the frame and the pad, the lower surface of the fixing plate is an arc-shaped surface that arches upward in the middle, and the lower surface of the fixing plate is in contact with the outer surface of the first pressure roller.

[0016] In the above technical solution, it is further preferred that the fixing plate is made of silicone material.

[0017] In the above technical solution, it is further preferred that the driven gear and the driving gear have the same number of teeth.

[0018] Compared with the prior art, this application achieves the following beneficial effects:

[0019] This application improves the problem of gear deviation by installing a pressure regulating valve at the air inlet of the downward pressure cylinder, and improves the problem of tooth sticking between the driven gear and the driving gear by adding a fixing component, thereby improving the working effect and efficiency of the pressing welding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a compression welding device provided in an embodiment of the present application, in which the first pressing roller is in the second position;

[0021] Figure 2 for Figure 1 A partial enlarged schematic diagram of point A in the middle;

[0022] Figure 3 for Figure 1 A front view of the press-fit welding device;

[0023] Figure 4 for Figure 1 A schematic three-dimensional structural diagram of the first pressing roller of the pressing welding device in the embodiment of the present invention is in a first position;

[0024] Figure 5 for Figure 4 Front view of the press-fit welding device in FIG.

[0025] Wherein: 100, pressing and welding device; 1, frame; 11, wall panel; 2, upper pressing assembly; 21, first pressing roller; 22, driven gear; 23, first pressing disc; 24, first clamping seat; 3, lower pressing assembly; 31, second pressing roller; 32, driving gear; 33, second pressing disc; 34, second clamping seat; 4, lower pressure cylinder; 5, fixing assembly; 51, support spring; 52, pad; 53, fixing plate. DETAILED DESCRIPTION

[0026] In order to describe the technical content, structural features, achieved purposes and effects of the application in detail, the technical solutions in the embodiments of the application will be described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all of the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but are not necessarily exclusive. For example, without departing from the inventive concept, the specific shape, structure and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0027] An embodiment of the present application provides a compression welding device for plastic sheets, which is used to heat and weld two plastic sheets stacked one above the other.

[0028] like Figure 1-3 As shown, the compression welding device 100 includes: a frame 1, an upper compression assembly 2, a lower compression assembly 3, a pair of downward pressure cylinders 4, and a fixing assembly 5. The upper compression assembly 2 and the lower compression assembly 3 are mounted on the frame 1 in an upper and lower position relative to each other. The pair of downward pressure cylinders 4 are mounted on the frame 1 and are in transmission connection with the upper compression assembly 2. The fixing assembly 5 is also mounted on the frame 1.

[0029] The frame 1 includes a pair of wall panels 11 arranged opposite to each other on the left and right sides.

[0030] The upper pressing assembly 2 includes a first pressing roller 21 rotatably set on the frame 1, a driven gear 22 coaxially sleeved on the first pressing roller 21, and a pair of first pressing discs 23. The first pressing roller 21 extends in the left and right directions, and the driven gear 22 is located on the outside of a pair of wall panels 11. The pair of first pressing discs 23 are spaced apart along the extension direction of the first pressing roller 21 and are located between the pair of wall panels 11. A first clamping seat 24 is provided between the pair of first pressing discs 23.

[0031] The lower pressing assembly 3 is arranged below the upper pressing assembly 2 and includes a second pressing roller 31 rotatably mounted on the frame 1, a driving gear 32 coaxially mounted on the second pressing roller 31, and a pair of second pressing discs 33. The second pressing roller 31 is arranged parallel to the first pressing roller 21, and the driving gear 32 is located outside the pair of wall panels 11. The driven gear 22 and the driving gear 32 are located on the same side and are arranged vertically opposite each other. The pair of second pressing discs 33 are spaced apart along the extension direction of the second pressing roller 31 and are located between the pair of wall panels 11. A second clamping seat 34 is provided between the pair of second pressing discs 33.

[0032] The two plastic sheets are stacked and inserted between the upper pressing assembly 2 and the lower pressing assembly 3. The upper pressing assembly 2 descends, and a pair of first pressing discs 23 and a pair of second pressing discs 33 press the two plastic sheets between the upper pressing assembly 2 and the lower pressing assembly 3. The pressing and welding device 100 is heated so that the two plastic sheets are heated and welded.

[0033] like Figure 3 、 5 As shown, a pair of downward pressure cylinders 4 are respectively installed on the top of a pair of wall panels 11, and the gas rods of the pair of downward pressure cylinders 4 are respectively connected to the first pressure roller 21. The pair of downward pressure cylinders 4 synchronously lift and lower the first pressure roller 21, so that the first pressure roller 21 switches between a first position in which the driven gear 22 is meshed with the driving gear 32 and a second position in which the driven gear 22 is disengaged from the driving gear 32. A pressure regulating valve (not shown in the figure) is installed 32 at the air inlet of each downward pressure cylinder 4. The pressure regulating valve fine-tunes the pressure of the downward pressure cylinder 4 when the driven gear 22 is meshed with the driving gear 32, thereby improving the problem of gear deviation.

[0034] In the embodiment of the present application, the driven gear 22 and the driving gear 32 have the same number of teeth. When the first pressure roller 21 is in the first position, the driving gear 32 and the driven gear 22 are engaged, and the driving gear 32 drives the driven gear 22 to rotate, so that the first pressure roller 21 and the second pressure roller 31 rotate synchronously.

[0035] The fixing assembly 5 is mounted on the frame 1 and is located on the upper side of the first pressing roller 21. Figure 4 、 5 As shown, when the first pressing roller 21 is in the first position, there is a gap between the fixing assembly 5 and the first pressing roller 21, as shown in FIG. Figure 1 、 3 As shown, when the first pressing roller 21 is in the second position, the fixing assembly 5 abuts against the first pressing roller 21 to prevent the first pressing roller 21 from rotating while the first pressing roller 21 is lifted, thereby avoiding the problem of tooth jamming.

[0036] like Figure 1-3 As shown, the fixing assembly 5 is located on the outside of a pair of wall panels 11, and the fixing assembly 5 is arranged on the same side as the driving gear 32 and the driven gear 22. The fixing assembly 5 includes at least one support spring 51, a pad 52, and a fixing plate 53 connected to the bottom of the pad 52. At least one support spring 51 extends in the up-down direction, and at least one support spring 51 is connected between the frame 1 and the pad 52. The lower surface of the fixing plate 53 is an arc-shaped surface with an upward arch in the middle. The lower surface of the fixing plate 53 is in contact with the outer surface of the first pressure roller 21. The fixing plate 53 is made of silicone material. When the fixing plate 53 abuts the first pressure roller 21, the silicone fixing plate 53 effectively increases the friction between the fixing plate 53 and the first pressure roller 21, thereby limiting the rotation of the first pressure roller 21.

[0037] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments. The above embodiments and descriptions are only for illustrative purposes. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. The scope of protection claimed in the present application is defined by the appended claims, the description and their equivalents.

Claims

1. A compression welding device for plastic sheets, characterized in that: include: The frame includes a pair of wall panels arranged opposite to each other on the left and right sides; An upper pressing assembly comprises a first pressing roller rotatably mounted on the frame, a driven gear coaxially sleeved on the first pressing roller, and a pair of first pressing discs, wherein the driven gear is located outside the pair of wall panels; A lower pressing assembly is arranged below the upper pressing assembly, and the lower pressing assembly includes a second pressing roller rotatably arranged on the frame, a driving gear coaxially sleeved on the second pressing roller, and a pair of second pressing discs, the driving gear is located on the outside of the pair of wall panels, and the driven gear and the driving gear are arranged opposite to each other in an upper and lower direction; a pair of downward pressure cylinders, respectively mounted on the pair of wall panels, the pair of downward pressure cylinders being in transmission connection with the first pressure roller to drive the first pressure roller to switch between a first position where the driven gear is engaged with the driving gear and a second position where the driven gear is disengaged from the driving gear, and a pressure regulating valve being installed at an air inlet of each downward pressure cylinder; as well as A fixing assembly is mounted on the frame and is located on the upper side of the first pressure roller. When the first pressure roller is in the first position, there is a gap between the fixing assembly and the first pressure roller. When the first pressure roller is in the second position, the fixing assembly abuts against the first pressure roller.

2. The compression welding device according to claim 1, characterized in that The pair of first pressing discs are spaced apart along the extending direction of the first pressing roller and are located between the pair of wall panels.

3. The compression welding device according to claim 2, characterized in that: A first clamping seat is provided between the pair of first pressing discs.

4. The compression welding device according to claim 1, wherein: The pair of second pressing discs are spaced apart along the extending direction of the second pressing roller and are located between the pair of wall panels.

5. The compression welding device according to claim 4, characterized in that: A second clamping seat is provided between the pair of second pressing discs.

6. The compression welding device according to claim 1, wherein: The fixing assembly is located on the outside of the pair of wall panels, and the fixing assembly is arranged on the same side as the driving gear and the driven gear.

7. The compression welding device according to claim 6, characterized in that: The fixing assembly includes at least one supporting spring, a pad and a fixing plate connected to the bottom of the pad, the at least one supporting spring extends in the up and down directions, the at least one supporting spring is connected between the frame and the pad, the lower surface of the fixing plate is an arc-shaped surface that arches upward in the middle, and the lower surface of the fixing plate is in contact with the outer surface of the first pressure roller.

8. The compression welding device according to claim 7, characterized in that: The fixing plate is made of silicone material.

9. The compression welding device according to claim 1, wherein: The driven gear and the driving gear have the same number of teeth.

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