Large rubberized fabric splicing vulcanized metal / rubber composite soft mold device

Abstract

A large adhesive tape spliced vulcanized metal / rubber composite soft mold device belongs to the field of rubber molds and comprises two composite soft molds, each composite soft mold comprises a rubber soft mold and a galvanized plate, each rubber soft mold is composed of an adhesive tape strip A and two adhesive tape strips B. The two sides of each adhesive tape strip A are provided with sanding surface bonding areas, and the two sides of each adhesive tape strip B are provided with sanding surface bonding areas. The adhesive tape strip B is provided with a sueding surface bonding area matched with the sueding surface bonding area of the adhesive tape strip A, the inner side edge of the adhesive tape strip B is provided with a chamfer, the adhesive tape strip A and the adhesive tape strip B are mutually bonded, and the galvanized iron plate and the rubber soft film are bonded into a whole through a bonding layer. The adhesive tape has the advantages that when pressure is applied, the galvanized sheet forms a cavity structure similar to a splicing area under the action of the pressure, so that the peeling strength and the appearance quality of the splicing part of the adhesive tape are ensured, and the adhesive tape does not slip.

Description

Technical Field

[0001] The utility model belongs to the field of rubber molds, and particularly relates to a large-sized fabric splicing vulcanizing metal / rubber composite soft mold device. Background Art

[0002] For large-sized fabric splicing products such as rubber dams and fabric air bags, vulcanization is generally carried out by a large-sized gantry flat vulcanizer. The splicing width is generally about 50 - 150 mm, and the splicing length is 10 - 30 m.

[0003] For the splicing vulcanization molding of double-layer fabrics, the splicing part of the main body fabric can be ground into a single-layer fabric, and after forming a step, splicing can be carried out, and its appearance and quality can meet the standard requirements; for the splicing of single-layer fabrics, only the rubber coating layer on the surface of the fabric can be ground and then spliced. After traditional flat direct die pressing vulcanization, the transition at the splicing part is not smooth, and the appearance quality is not easy to meet the requirements; using a rubber-metal mold can solve the appearance quality problem, but the cost is high and the construction operability is poor; directly using a rubber soft mold, the transition corner part is prone to be spongy and not smooth, and due to reasons such as thermal aging and wear, the service life of the rubber soft mold is short. This poses relatively high technical requirements for the vulcanization mold. In patent CN203739082U, the fabric splicing mold uses a rubber soft film and a galvanized plate, which improves the vulcanization appearance and quality, and the manufacturing process is simple, but the process control is difficult, and it is extremely easy to cause the slippage of the rubber soft film and the metal galvanized plate. Summary of the Invention

[0004] The purpose of the utility model is to provide a large-sized fabric splicing vulcanizing metal / rubber composite soft mold device to overcome the above-mentioned defects. The metal and the rubber are combined into one body. When pressure is applied, the galvanized plate will form an approximate cavity structure in the splicing area under the action of the pressure, so as to ensure the peel strength and appearance quality of the fabric splicing part without slippage.

[0005] The purpose of the utility model is realized through the following technical solutions: A large-sized fabric splicing vulcanizing metal / rubber composite soft mold device, characterized in that: it includes upper and lower composite soft molds. Each composite soft mold includes a rubber soft mold and a galvanized plate. The rubber soft mold is composed of a fabric strip A and two fabric strips B located on both sides of the fabric strip A. The two sides of the fabric strip A are provided with abrasive surface bonding areas. The fabric strip B is provided with abrasive surface bonding areas that coincide with the abrasive surface bonding areas on both sides of the fabric strip A. The inner side edge of the fabric strip B is provided with a chamfer. The abrasive surface bonding areas of the fabric strip A and the fabric strip B and the chamfer of the fabric strip B are respectively coated with an adhesive layer. The fabric strip A and the fabric strip B are bonded to each other and vulcanized and bonded by heat. The galvanized plate is arranged above the rubber soft mold, and an adhesive layer is arranged between the galvanized plate and the rubber soft mold. The galvanized plate and the rubber soft mold are bonded into one body through the adhesive layer.

[0006] The advantages of the present utility model are as follows:

[0007] 1. Under the action of flat pressure, the galvanized sheet of the metal / rubber composite soft mold device can form a cavity structure similar to it under the extrusion of the rubber soft mold, which can avoid the rubber at the splicing part presenting a spongy state, and the transition part is gentle and smooth, thus ensuring the peel strength and overall appearance quality of the splicing part of the adhesive tape;

[0008] 2. Protected by the galvanized sheet, the rubber soft mold can be effectively protected, and the service life of the rubber soft mold is prolonged;

[0009] 3. Since the galvanized sheet and the rubber soft mold are bonded together, the relative displacement of the two under pressure is effectively inhibited, the process control is simple and effective, the process feasibility and splicing quality are improved. At the same time, the composite soft mold device can be reused, the recycling rate is high, the use effect is obvious, the operation is convenient, and the labor cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is the top view of the present utility model.

[0011] Figure 2 is the cross-sectional view of the present utility model.

[0012] Wherein:

[0013] 1 - adhesive tape strip, 2 - adhesive tape strip, 3 - abrasive surface bonding area, 4 - chamfer, 5 - galvanized sheet, 6 - bonding layer. DETAILED DESCRIPTION OF THE INVENTION

[0014] Example: As Figure 1 、 2As shown, taking a single-layer adhesive tape with a thickness of 3.5 mm, a splicing width of 100 mm, and a splicing length of 10 m as an example, a large-scale adhesive tape splicing vulcanized metal / rubber composite soft mold device includes upper and lower composite soft molds. Each composite soft mold includes a rubber soft mold and a galvanized sheet. The rubber soft mold is composed of a strip of adhesive tape (numbered A) 1 cut from an adhesive tape with a thickness of 4 mm, having a length of 10 m and a width of 200, and two strips of adhesive tape (numbered B) 2 cut from adhesive tapes with a thickness of 2 mm, having a length of 10 m and a width of 45 mm, located on both sides of the adhesive tape strip A. Grinding and roughened bonding areas 3 are provided on both sides of the adhesive tape strip A, and the adhesive tape strip B is provided with grinding and roughened bonding areas 3 that coincide with the grinding and roughened bonding areas on both sides of the adhesive tape strip A. Chamfers 4 are provided on the inner sides of the adhesive tape strip B. Bonding layers 6 are respectively coated on the grinding and roughened bonding areas of the adhesive tape strip A and the adhesive tape strip B and at the chamfers of the adhesive tape strip B. The adhesive tape strip A and the adhesive tape strip B are bonded to each other and hot vulcanized and bonded on a gantry flatbed machine. The galvanized sheet 5 is a long strip cut from a galvanized sheet with a thickness of 0.2 - 0.5 mm, having a length of 10 m and a width of 250 mm, and is bent into a structure approximately similar to the cross-section of the rubber soft mold. The galvanized sheet 5 is installed on the upper surface of the rubber soft mold, and a bonding layer 6 is provided between the galvanized sheet 5 and the rubber soft mold. The bonding layer 6 bonds the galvanized sheet 5 and the rubber soft mold into one body.

[0015] Process flow:

[0016] (1) Rubber part: as follows Figure 1 、 2 As shown, cut a strip of adhesive tape (numbered A) 1 with a length of 10 m and a width of 200 mm from an adhesive tape with a thickness of 4 mm, and cut two strips of adhesive tape (numbered B) 2 with a length of 10 m and a width of 45 mm from adhesive tapes with a thickness of 2 mm. Grind the splicing area of the adhesive tape strips A and B into a rough surface, and grind the area C of the adhesive tape strip B into a chamfer. Coat an adhesive layer and bond them together, and then hot vulcanize and bond them on a gantry flatbed machine. In this way, the rubber part of the upper template metal / rubber composite soft mold device is made;

[0017] (2) Composite: Take a galvanized sheet with a thickness of 0.2 - 0.5 mm, cut it into a long strip with a length of 10 m and a width of 250 mm, and bend the galvanized sheet into a structure approximately similar to the cross-section of the rubber soft mold;

[0018] (3) After grinding, cleaning, and drying the above rubber soft mold part, perform a cold bonding treatment with the bent galvanized sheet to become one body, and make a metal / rubber composite soft mold device;

[0019] (4) Use the same method to make the lower flatbed metal / rubber soft mold device.

[0020] (5) Installation: First, hoist the upper flat metal / rubber soft mold device onto the upper flat plate, and then fixedly install the lower flat metal / rubber soft mold device on the lower flat plate, ensuring that the centers of the upper and lower molds are aligned.

Claims

1. A large-sized rubberized cloth splicing vulcanization metal / rubber composite soft mold device, characterized in that: It includes upper and lower composite soft dies. Each composite soft die includes a rubber soft die and a galvanized sheet. The rubber soft die is composed of a tape strip A and two tape strips B located on both sides of the tape strip A. The two sides of the tape strip A are provided with abrasive surface bonding areas. The tape strip B is provided with abrasive surface bonding areas that coincide with the abrasive surface bonding areas on both sides of the tape strip A. The inner side edge of the tape strip B is provided with a chamfer. Adhesive layers are respectively coated on the abrasive surface bonding areas of the tape strip A and the tape strip B and at the chamfer of the tape strip B. The tape strip A and the tape strip B are adhesively bonded to each other and vulcanized by heat. The galvanized sheet is arranged above the rubber soft film, and an adhesive layer is arranged between the galvanized sheet and the rubber soft film. The galvanized sheet and the rubber soft film are adhesively bonded into one body through the adhesive layer.

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