girder

Abstract

The application discloses a girder, comprising: a main body provided with a first cavity for a double-row pointed-tooth chain to pass through, the main body being made of aluminum; a limiting block detachably and fixedly connected with the main body, the limiting block being located at the top of the first cavity, the limiting block being made of iron; and a supporting block detachably and fixedly connected with the main body, the supporting block being at least partially located in the first cavity, one side of the supporting block facing the limiting block forming two convex portions, the convex portions supporting the double-row pointed-tooth chain, and the supporting block being made of iron. The limiting block and the supporting block are arranged on the main body, the limiting block and the supporting block can support the double-row pointed-tooth chain respectively, and the limiting block and the supporting block are both made of iron, so that the wear resistance can be improved, and the debris and dust can be reduced compared with the aluminum.

Description

Technical Field

[0001] This utility model generally relates to the field of vacuum forming machines, and more particularly to a main beam. Background Technology

[0002] A vacuum forming machine, also known as a thermoforming machine, is a machine that uses heated and plasticized thermoplastic plastic rolls such as PVC, PE, PP, PET, and HIPS to form various shapes of high-end packaging boxes, frames, and other products. It utilizes the vacuum suction generated by a vacuum pump to mold heated and softened thermoplastic plastic sheets such as PVC and PET into various shapes of vacuum covers, blister trays, and other packaging materials.

[0003] When a vacuum forming machine is in operation, it needs to use a main beam. Support bars are set on the main beam to support the rollers of the chain. The rollers roll on the support bars to reduce the friction between the chain and the main beam, thereby realizing the material transfer.

[0004] In existing technologies, the main beam is usually made of aluminum. With the use of the vacuum forming machine, the rollers continuously roll on the main beam. Since the aluminum support strips are not very hard, aluminum shavings will be generated, which will affect the service life of the main beam and reduce its reliability. Utility Model Content

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a beam with high reliability.

[0006] Firstly, the main beam of this utility model includes:

[0007] The main body has a first cavity through which a double-row toothed chain passes, and the main body is made of aluminum;

[0008] A limiting block, which is detachably fixed to the main body, is located at the top of the first cavity, and the limiting block is made of iron;

[0009] A support block is detachably and fixedly connected to the main body. The support block is at least partially located within the first cavity. Two protrusions are formed on the side of the support block facing the limiting block. The protrusions support a double-row toothed chain. The support block is made of iron.

[0010] According to the technical solution provided in the embodiments of this application, a limiting block and a support block are provided on the main body. The limiting block and the support block can support the double-row toothed chain respectively. Both the limiting block and the support block are made of iron, which can improve wear resistance and reduce debris and dust compared to aluminum. Attached Figure Description

[0011] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0012] Figure 1 This is a schematic diagram of the main beam structure of an embodiment of the present utility model;

[0013] Figure 2 This is a schematic diagram of the main body of the beam in an embodiment of the present invention. Detailed Implementation

[0014] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] Please refer to Figure 1 and 2 The main beam of this utility model includes: a main body 100, which has a first cavity 110 through which a double-row toothed chain passes, the main body 100 being made of aluminum; a limiting block 200, which is detachably fixedly connected to the main body 100, the limiting block 200 being located at the top of the first cavity 110, the limiting block 200 being made of iron; and a support block 300, which is detachably fixedly connected to the main body 100, the support block 300 being at least partially located within the first cavity 110, and two protrusions 310 forming on the side of the support block 300 facing the limiting block 200, the protrusions 310 supporting the double-row toothed chain, the support block 300 being made of iron.

[0017] In an embodiment of this invention, the vacuum forming machine uses a double-row toothed chain to transport the material sheet. The double-row toothed chain is equipped with double-row chain links, which makes the transmission more stable.

[0018] A double-row toothed chain passes through the first cavity 110. The chain includes a first roller and a second roller. The first roller is located at the chain link, and the second roller is opposite the teeth. The first roller rolls on the protrusion 310, and the second roller rolls on one side of the limiting block 200, thereby reducing friction during the movement of the double-row toothed chain. Both the limiting block 200 and the support block 300 are made of iron, which, compared to aluminum, improves wear resistance and reduces debris and dust. The main body 100 is made of aluminum, which reduces the weight of the main beam.

[0019] Since the limiting block 200 and the support block 300 are made of iron and the main body 100 is made of aluminum, the limiting block 200 and the support block 300 are detachably fixed to the main body 100, which facilitates the assembly of the main beam.

[0020] Furthermore, a first positioning groove 111 is provided at the top of the first cavity 110, and the limiting block 200 is partially placed in the first positioning groove 111.

[0021] In an embodiment of this utility model, when the limiting block 200 is fixedly connected to the main body 100, a portion of the limiting block 200 is placed into the first positioning groove 111, which facilitates the connection between the limiting block 200 and the main body 100. This also ensures the reliability of the fixed connection between the limiting block 200 and the main body 100.

[0022] Furthermore, the side wall of the first cavity 110 is provided with a second positioning groove 112, and the support block 300 is partially placed into the second positioning groove 112.

[0023] In this embodiment of the invention, when the support block 300 is fixedly connected to the main body 100, a portion of the support block 300 is placed into the second positioning groove 112, which facilitates the connection between the support block 300 and the main body 100. This also ensures the reliability of the fixed connection between the support block 300 and the main body 100.

[0024] Furthermore, the support block 300 is detachably fixed to the main body 100 by a plurality of first bolts.

[0025] In the embodiments of this utility model, the support block 300 is detachably fixed to the main body 100 by a plurality of first bolts, which facilitates the fixed connection between the support block 300 and the main body 100 and also ensures the reliability of the connection between the support block 300 and the main body 100.

[0026] Furthermore, the first bolt is provided with a bolt head, and the main body 100 is provided with a second cavity 120. The second cavity 120 is provided with a stop part 121. The bolt head is inserted into the second cavity 120, and the stop part 121 stops the bolt head.

[0027] In this embodiment of the invention, the first bolt is placed inside the second cavity 120 and screwed onto the limiting block 200. The stop portion 121 can stop the bolt head, thereby fixing the limiting block 200 to the main body 100 and ensuring the reliability of the connection between the support block 300 and the main body 100. A through hole can be provided on the second cavity 120 directly opposite the bolt head, allowing tools to pass through the through hole and tighten the first bolt inside the second cavity 120, reducing the difficulty of disassembly and assembly.

[0028] Furthermore, it also includes multiple second bolts, which pass through the main body 100 and are screwed to the limiting block 200.

[0029] In the embodiments of this utility model, the limiting block 200 is detachably fixed to the main body 100 by a plurality of second bolts, which facilitates the fixed connection between the limiting block 200 and the main body 100 and also ensures the reliability of the connection between the limiting block 200 and the main body 100.

[0030] Furthermore, the limiting block 200 has a notch 210 on the side facing the side wall of the first cavity 110.

[0031] In an embodiment of this invention, when the double-row toothed chain passes through the first cavity 110, the second roller rolls on the side of the limiting block 200 facing the sidewall of the first cavity 110. By providing a notch 210 on the side of the limiting block 200 facing the sidewall of the first cavity 110, the second roller can be avoided.

[0032] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A girder, characterized in that include: The main body has a first cavity through which a double-row toothed chain passes, and the main body is made of aluminum; A limiting block, which is detachably and fixedly connected to the main body, is located at the top of the first cavity, and the limiting block is made of iron; A support block is detachably and fixedly connected to the main body. The support block is at least partially located within the first cavity. Two protrusions are formed on the side of the support block facing the limiting block. The protrusions support a double-row toothed chain. The support block is made of iron.

2. The girder of claim 1, wherein The top of the first cavity is provided with a first positioning groove, and the limiting block is partially placed into the first positioning groove.

3. The girder of claim 1, wherein The sidewall of the first cavity is provided with a second positioning groove, and the support block is partially placed into the second positioning groove.

4. The beam according to claim 1, characterized in that, The support block is detachably fixed to the main body by a plurality of first bolts.

5. The beam according to claim 4, characterized in that, The first bolt is provided with a bolt head, and the main body is provided with a second cavity. The second cavity is provided with a stop part, the bolt head is placed into the second cavity, and the stop part stops the bolt head.

6. The main beam according to claim 1, characterized in that, It also includes a plurality of second bolts, which pass through the body and are screwed to the limiting block.

7. The beam according to claim 1, characterized in that, The limiting block has a notch on the side facing the first cavity sidewall.

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