Processing device and processing method for die cutting piece made of conductive silicone rubber material

Abstract

The invention relates to a processing device and a processing method for a die cutting piece made of a conductive silicone rubber material. The processing device comprises a material piece feeding mechanism, a punching mechanism and a transmission mechanism, the punching mechanism is composed of a cutting die upper plate and a cutting die lower plate, two foams are attached to the cutting die lower plate, the foam and the moving direction of the material belt form a 90-degree angle, the foam comprises a double-faced adhesive tape area attached to the cutting die lower plate and a material belt feeding area connected with the double-faced adhesive tape area, and the double-faced adhesive tape area is connected with the cutting die lower plate. The material belt feeding areas and the cutting die lower plate form a channel for a material belt to pass through, and a punching area of the punching mechanism is arranged between the material belt feeding areas on two adjacent foams; in the working process, a material belt is fed and passes through a channel below a material belt feeding area of foam, the punching mechanism conducts punching, then the transmission mechanism drives the material belt to advance, and a punched product is obtained. Compared with the prior art, the production capacity can be improved through continuous punching, the production capacity can be improved by about 4 times, the labor cost is reduced, and the cutting die cost is also reduced by about 2 / 3.

Description

Technical Field

[0001] The invention belongs to the technical field of die cutting, and in particular relates to a processing device and a processing method for a die cutting piece of conductive silicone rubber material. Background Art

[0002] Conductive silicone rubber materials are common in the die-cutting industry and are widely used in electronic products. They are mostly used for electronic product buttons, electronic contacts, conductive seals, etc. Conductive silicone rubber comes in sheets, and the hardness varies according to the requirements of different products, generally ranging from 10 to 80 Shore hardness. Because it comes in sheets, it is also called conductive silicone rubber sheet. The surface of the material is slightly sticky, and it is easy to deform when stacked or squeezed by external force. Therefore, when processing the material, the material supplier will cover both sides with a layer of PET film for protection. The thickness of the PET film is usually about 0.06mm. When using a die-cutting machine to punch and cut products, because the original film is too thick, the edge of the product will be squeezed and deformed after punching.

[0003] After punching, it looks like this Figure 1 The area around the arrow position will be squeezed a bit (for example, if the thickness of the conductive silicone sheet is 1mm, there will only be about 0.7mm after the edge is punched. The shaded area is the silicone sheet, and the non-shaded area is the handle, which is for the customer's convenience in taking it).

[0004] This will make the appearance ugly. When debugging, you need to tear off the original film (PET film) of the thermal conductive silicone sheet and then use the die-cutting machine to punch it. Since the original PET film is torn off, there is no squeezing force on the edge of the cut during punching, and the edge deformation can be solved. However, since the material has weak adhesion, it will stick to the die when punching, so it cannot be punched continuously, but only punched once, and each time you punch, you have to take down the punched material and put another material to be punched.

[0005] This will result in very low production capacity. In order to increase production capacity, the number of knife lines on the die will be increased. For example, for this product, the die is directly opened to make 20 products each time. The die diagram is as follows: Figure 2 As shown, manual feeding is still required for single punching. Although 20 products can be made each time, the production capacity of a machine is only about 10K per day, which is still relatively slow and labor-intensive. In addition, the cost of the die will be very high. Once a position is broken, a knife needs to be scrapped. Otherwise, there will be defects every time punching is performed. The material itself is also very expensive. Summary of the invention

[0006] The purpose of the present invention is to provide a processing device and a processing method for die-cutting parts of conductive silicone rubber materials in order to overcome the defects of the above-mentioned prior art.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] The present invention provides a processing device for die-cutting parts made of conductive silicone rubber material, comprising a material feeding mechanism, a punching mechanism and a transmission mechanism arranged along the moving direction of the material belt;

[0009] The punching mechanism is composed of an upper die plate and a lower die plate. Two foams are attached to the lower die plate. The foams are 90 degrees to the moving direction of the material strip. The foams include a double-sided adhesive area that is tightly attached to the lower die plate and a material strip feeding area connected to the double-sided adhesive area. The material strip feeding area and the lower die plate form a channel for the material strip to pass through. The material strip feeding areas on two adjacent foams are the punching area of ​​the punching mechanism.

[0010] During operation, the material belt is fed and passes through the channel below the material belt feeding area of ​​the foam, the punching mechanism performs punching and then the transmission mechanism drives the material belt forward to obtain the punched product.

[0011] Furthermore, when the punching mechanism performs punching, the punching area satisfies the requirement that the blade of the punching mechanism does not touch the foam. When the punching mechanism performs continuous punching, the number of holes opened on the upper plate of the cutting die is greater than 2. Due to the effect of the foam, the product will not be moved upward by the upper plate of the cutting die due to its own viscosity. Therefore, in order to save costs, 2 or more product cutting lines are set.

[0012] Furthermore, the foam has a thickness of 0.8-1.4 mm and a Shore hardness of 40-70 HC, which is such a hardness that the foam will not be damaged during punching.

[0013] Furthermore, the material feeding mechanism includes a material feeding roller and a material feeding roller driving motor drivingly connected to the material feeding roller. The material feeding roller fixes the material belt to the starting position so that it can enter the channel between the material belt area and the lower plate of the knife die.

[0014] Furthermore, the material belt is used to transport the product that needs to be punched, and the product is a thermally conductive silicone sheet with the PET film removed.

[0015] Furthermore, the punching mechanism is connected to a driving motor, and the driving motor is used to drive the upper plate of the cutting die to perform upper and lower punching.

[0016] Furthermore, the punching mechanism uses continuous punching, and the punching speed is 50-80 times / min.

[0017] Furthermore, the transmission mechanism includes a transmission roller and a transmission roller servo motor transmission-connected to the transmission roller.

[0018] Furthermore, the transmission mechanism is used to drive the material strip to move and its transmission speed is set accordingly according to the punching speed.

[0019] The present invention also provides a processing method of a processing device for processing a die-cut piece of conductive silicone rubber material, comprising the following steps:

[0020] The material belt feeding mechanism feeds and transfers the product, and the knife die upper plate on the punching mechanism performs punching and cutting. During punching and cutting, the material belt is driven forward by the transmission mechanism, and the punching and cutting mechanism punches and cuts continuously, and finally the punched product is obtained.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] (1) In the present invention, foam is attached to the material feeding position of the lower plate on both sides of the knife die. When the upper plate of the knife die is punched down, the material belt is driven forward by the transmission mechanism in front. The foam pads on both sides press the silicone sheet. When the upper plate of the knife die is lifted, the silicone sheet is protected on the material belt and does not move upward with the upper plate of the knife die, thereby completing continuous punching.

[0023] (2) The device of the present invention can perform continuous punching, which can increase production capacity by about 4 times and reduce labor costs.

[0024] (3) Since the present invention can punch continuously, there is no need to open 20 cutting dies. The more cutting lines there are, the more complicated the debugging is, and the cost of the cutting die will be about 2 / 3 cheaper. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of a conductive silicone sheet in the prior art.

[0026] Figure 2 This is a schematic diagram of a cutting die using 20 cutting lines in the prior art.

[0027] Figure 3 Schematic diagram of the lower plate of the knife die of the present invention in Example 1

[0028] Figure 4 Schematic diagram of a processing device for die-cutting conductive silicone rubber materials of the present invention in Example 1.

[0029] Numbers in the figure:

[0030] 1- material belt, 2- material belt feeding area, 3- double-sided tape area, 4- transmission mechanism, 5- punching area, 6- foam, 7- material feeding mechanism, 8- punching mechanism, 9- upper die plate, 10- lower die plate. DETAILED DESCRIPTION

[0031] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0032] In the following implementation manners or examples, unless otherwise specified, functional components or structures are conventional components or conventional structures used in the art to achieve corresponding functions.

[0033] In order to improve product production capacity and enable continuous punching and cutting, saving labor costs, the present invention provides a processing device for die-cutting parts of conductive silicone rubber materials, the structure of which can be seen in Figure 3 and Figure 4 As shown, it includes a material feeding mechanism 7, a punching mechanism 8 and a transmission mechanism 4 arranged along the moving direction of the material belt 1;

[0034] The punching mechanism 8 is composed of a die upper plate 9 and a die lower plate 10. Two foams 6 are attached to the die lower plate 10. The foams 6 are 90 degrees to the moving direction of the material strip 1. The foams 6 include a double-sided adhesive area 3 that is tightly attached to the die lower plate 10 and a material strip feeding area 2 connected to the double-sided adhesive area. The material strip feeding area 2 and the die lower plate 2 form a channel for the material strip 1 to pass through. The material strip feeding area 2 on two adjacent foams 6 is the punching area 5 of the punching mechanism 8.

[0035] During operation, the material strip 1 is fed and passes through the channel below the material strip feeding area 2 of the foam 6, the punching mechanism 8 performs punching and then the transmission mechanism 4 drives the material strip 1 forward to obtain the punched product.

[0036] In some specific implementations, please refer to Figure 3 and Figure 4 As shown, when the punching mechanism 8 is punching, the punching area 5 ensures that the blade of the punching mechanism 8 does not touch the foam 6. When the punching mechanism 8 is punching continuously, the number of holes opened on the upper plate 9 of the cutting die is greater than 2. Due to the effect of the foam, the product will not be moved upward by the upper plate of the cutting die due to its own viscosity. Therefore, in order to save costs, 2-4 product cutting lines are set.

[0037] In some specific implementations, please refer to Figure 3 As shown, the foam 6 has a thickness of 0.8-1.4 mm and a Shore hardness of 40-70 HC, which is such a hardness that it will not be damaged during punching.

[0038] In some specific implementations, please refer to Figure 4As shown, the material feeding mechanism 7 includes a material feeding roller and a material feeding roller driving motor which is transmission-connected to the material feeding roller. The material feeding roller fixes the material belt to the starting position so that it can enter the channel between the material belt area and the lower plate of the knife die.

[0039] In some specific implementations, please refer to Figure 3 and Figure 4 As shown, the material belt 1 is used to transport the product that needs to be punched, and the product is a thermally conductive silicone sheet with the PET film removed.

[0040] In some specific implementations, please refer to Figure 4 As shown, the punching mechanism 8 is connected to the driving motor, and the driving motor is used to drive the upper plate of the cutting die to perform upper and lower punching.

[0041] In some specific implementations, please refer to Figure 3 and Figure 4 As shown, the punching mechanism 8 uses continuous punching, and its punching speed is 50-80 times / min.

[0042] In some specific implementations, please refer to Figure 4 As shown, the transmission mechanism 4 includes a transmission roller and a transmission roller servo motor that is transmission-connected to the transmission roller.

[0043] In some specific implementations, please refer to Figure 3 and Figure 4 As shown, the transmission mechanism 4 is used to drive the material strip 1 to move and its transmission speed is set accordingly according to the punching speed.

[0044] The present invention also provides a processing method of a processing device for processing a die-cut piece of conductive silicone rubber material, comprising the following steps:

[0045] The material belt feeding mechanism 1 feeds and transmits the product, and the upper plate 9 of the knife die on the punching mechanism 8 performs punching. During punching, the transmission mechanism 4 drives the material belt 1 forward, and the punching mechanism 8 punches continuously, and finally the punched product is obtained.

[0046] The above embodiments may be implemented individually or in any combination of two or more.

[0047] The above implementation is described in more detail below in conjunction with specific examples.

[0048] Example 1

[0049] In order to improve product production capacity and enable continuous punching and cutting, saving labor costs, the present invention provides a processing device for die-cutting parts of conductive silicone rubber materials, the structure of which can be seen in Figure 3 and Figure 4As shown, it includes a material feeding mechanism 7, a punching mechanism 8 and a transmission mechanism 4 arranged along the moving direction of the material belt 1;

[0050] The punching mechanism 8 is composed of a die upper plate 9 and a die lower plate 10. Two foams 6 are attached to the die lower plate 10. The foams 6 are 90 degrees to the moving direction of the material strip 1. The foams 6 include a double-sided adhesive area 3 that is in close contact with the die lower plate 10 and a material strip feeding area 2 connected to the double-sided adhesive area. The material strip feeding area 2 and the die lower plate 2 form a channel for the material strip 1 to pass through. The material strip feeding area 2 on two adjacent foams 6 is the punching area 5 of the punching mechanism 8.

[0051] During operation, the material strip 1 is fed and passes through the channel below the material strip feeding area 2 of the foam 6, the punching mechanism 8 performs punching and then the transmission mechanism 4 drives the material strip 1 forward to obtain the punched product.

[0052] Please see again Figure 3 and Figure 4 As shown, when the punching mechanism 8 is punching, the punching area 5 ensures that the blade of the punching mechanism 8 does not touch the foam 6. During continuous punching, two holes are opened on the upper plate 9 of the cutting die. Due to the effect of the foam, the product will not be moved upward by the upper plate of the cutting die due to its own viscosity. Therefore, in order to save costs, two product cutting lines are set.

[0053] Please see again Figure 3 As shown, the thickness of the foam 6 is 1.2 mm, and its Shore hardness is 60HC, which is a hardness that can be punched without being damaged.

[0054] Please see again Figure 4 As shown, the material feeding mechanism 7 includes a material feeding roller and a material feeding roller driving motor drivingly connected to the material feeding roller. The material feeding roller fixes the material belt to the starting position so that it can enter the channel between the material belt area and the lower plate of the knife die.

[0055] Please see again Figure 3 and Figure 4 As shown, the material belt 1 is used to transport the product that needs to be punched, and the product is a thermally conductive silicone sheet with the PET film removed.

[0056] Please see again Figure 4 As shown, the punching mechanism 8 is connected to the driving motor, and the driving motor is used to drive the upper plate of the cutting die to perform up and down punching.

[0057] Please see again Figure 3 and Figure 4 As shown, the punching mechanism 8 uses continuous punching, and its punching speed is 60 times / min.

[0058] Please see again Figure 4As shown, the transmission mechanism 4 includes a transmission roller and a transmission roller servo motor that is transmission-connected to the transmission roller.

[0059] Please see again Figure 3 and Figure 4 As shown, the transmission mechanism 4 is used to drive the material strip 1 to move and its transmission speed is set accordingly according to the punching speed.

[0060] The present invention also provides a processing method of a processing device for processing a die-cut piece of conductive silicone rubber material, comprising the following steps:

[0061] The material belt feeding mechanism 1 feeds and transmits the product, and the upper plate 9 of the knife die on the punching mechanism 8 performs punching. During punching, the transmission mechanism 4 drives the material belt 1 forward, and the punching mechanism 8 punches continuously, and finally the punched product is obtained.

[0062] The above embodiments may be implemented individually or in any combination of two or more.

[0063] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A processing device for die-cutting conductive silicone rubber materials, characterized in that: It comprises a material feeding mechanism (7), a punching mechanism (8) and a transmission mechanism (4) arranged along the moving direction of the material belt (1); The punching mechanism (8) is composed of an upper die plate (9) and a lower die plate (10), two foams (6) are attached to the lower die plate (10), and the foams (6) are 90 degrees to the moving direction of the material strip (1), the foams (6) include a double-sided adhesive area (3) tightly attached to the lower die plate (10) and a material strip feeding area (2) connected to the double-sided adhesive area, the material strip feeding area (2) and the lower die plate (2) form a channel for the material strip (1) to pass through, and the area between the material strip feeding areas (2) on two adjacent foams (6) is the punching area (5) of the punching mechanism (8); During operation, the material strip (1) is fed and passes through a channel below the material strip feeding area (2) of the foam (6), the punching mechanism (8) performs punching, and then the transmission mechanism (4) drives the material strip (1) forward to obtain a punched product.

2. A processing device for die-cutting conductive silicone rubber material according to claim 1, characterized in that: When the punching mechanism (8) performs punching, the punching area (5) thereof satisfies the requirement that the blade of the punching mechanism (8) does not touch the foam (6), and when the punching mechanism (8) performs continuous punching, the number of holes opened on the upper plate of the knife die is greater than 2.

3. The processing device for die-cutting conductive silicone rubber material according to claim 1, characterized in that: The thickness of the foam (6) is 0.8-1.4 mm, and its Shore hardness is 40-70 HC.

4. The processing device for die-cutting conductive silicone rubber material according to claim 1, characterized in that: The material feeding mechanism (7) comprises a material feeding roller and a material feeding roller driving motor which is transmission-connected to the material feeding roller.

5. The processing device for die-cutting conductive silicone rubber material according to claim 1, characterized in that: The material belt (1) is used to transport a product that needs to be punched, and the product is a thermally conductive silicone sheet with the PET film removed.

6. The processing device for die-cutting conductive silicone rubber material according to claim 1, characterized in that: The punching mechanism (8) is transmission-connected to a driving motor, and the driving motor is used to drive the upper plate of the cutting die to perform punching up and down.

7. The processing device for die-cutting conductive silicone rubber material according to claim 1, characterized in that: The punching mechanism (8) uses continuous punching, and its punching speed is 50-80 times / min.

8. The processing device for die-cutting conductive silicone rubber material according to claim 1, characterized in that: The transmission mechanism (4) comprises a transmission roller and a transmission roller servo motor which is transmission-connected to the transmission roller.

9. The processing device for die-cutting conductive silicone rubber material according to claim 1, characterized in that: The transmission mechanism (4) is used to drive the material strip (1) to move, and its transmission speed is set accordingly according to the punching speed.

10. A processing method for a conductive silicone rubber material die-cutting piece processing device as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: The material belt feeding mechanism (1) feeds and transfers the product, and the upper plate (9) of the cutting die on the punching mechanism (8) performs punching. During punching, the transmission mechanism (4) drives the material belt (1) forward, and the punching mechanism (8) punches continuously, and finally a punched product is obtained.

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