A double-sided adhesive stamping and shearing manufacturing process for stainless steel sheets

Abstract

The present invention discloses a stamping and shearing manufacturing process for double-sided adhesive tape of stainless steel sheet, comprising the following steps: (1) firstly covering the front side of the stainless steel strip with a protective film, punching out a preset shape area on the protective film, and excluding the protective film in the preset shape area; (2) covering the front side black tape on the surface of the protective film, punching out the front side black tape at the preset shape area to obtain the preset shape black tape, and excluding the protective film and the front side black tape outside the preset shape area; (3) covering the front side of the stainless steel strip with a conductive tape, punching out the conductive tape to obtain the preset shape conductive tape, and excluding the remaining conductive tapes; (4) covering the front side of the stainless steel strip with a matte film, and covering the back side black tape on the back side of the stainless steel strip to obtain a semi-finished product; (5) feeding the semi-finished product into a stamping die device for shearing to obtain a finished product; the present invention solves the problem that bubbles are easily generated when traditional adhesive materials and stainless steel sheets are pasted together, improves the position accuracy of the adhesive materials and stainless steel sheets, and improves product production efficiency.

Description

Technical Field

[0001] The invention relates to a stainless steel sheet double-sided adhesive stamping and shearing manufacturing process, belonging to the technical field of electronic component manufacturing. Background Art

[0002] With the rapid development of society, the types, models and number of electronic devices have increased dramatically. In particular, portable electronic devices such as mobile phones, tablets and laptops have become popular among people and are essential electronic devices in everyone's hands. With the advancement of science and technology, the technological level of electronic devices is also getting higher and higher. The electronic components used to constitute electronic devices are also becoming more and more diverse. The technical requirements of electronic components for electronic devices are also getting higher and higher. There are always many problems when some new electronic components are manufactured using traditional manufacturing processes.

[0003] Currently, there is a new type of electronic component product, which is a stainless steel sheet with a black adhesive and a conductive adhesive of a predetermined shape coated on the front side of the stainless steel sheet. The black adhesive on the front side is a concave-shaped structure with a notch, the size of the black adhesive on the front side is smaller than the size of the stainless steel sheet, and there is a blank area between the edge of the black adhesive on the front side and the edge of the stainless steel sheet. The conductive adhesive is a rectangular structure and is arranged in the notch of the black adhesive on the front side, with a gap between the conductive adhesive and the black adhesive on the front side. The back side of the stainless steel sheet is covered with black adhesive, and the size of the black adhesive on the back side is the same as that of the stainless steel sheet, that is, the edge of the black adhesive on the back side is flush with the edge of the stainless steel sheet.

[0004] When this product is manufactured using the traditional etching manufacturing process, the stainless steel sheet, front black glue, conductive glue, and back black glue need to be etched out separately in advance, and then the front black glue, conductive glue, and back black glue are respectively attached to the stainless steel sheet using a laminating machine. This process method will easily cause bubbles when the front black glue and back black glue are attached to the stainless steel sheet, and the bubble ratio is too high. At the same time, the precision of the front black glue, conductive glue, and back black glue when attached to the stainless steel sheet is poor, resulting in deviations in the position of the front black glue, conductive glue, and back black glue on the stainless steel sheet, and product quality and consistency cannot be guaranteed. The product cleanliness is poor during the manufacturing process, and there is a problem of glue overflow from the front black glue and conductive glue.

[0005] In order to solve the problem of deviation between the front black glue, conductive glue and back black glue and the stainless steel sheet during lamination, another stamping manufacturing process based on the etching manufacturing process is proposed in the prior art. The stainless steel sheet, front black glue, conductive glue and back black glue are etched out separately in advance, and then the front black glue and conductive glue are made into carrier tapes, and the stainless steel sheet is made into carrier tapes. The front black glue and conductive glue on the carrier tapes are then lamination-laminated on the stainless steel sheet; finally, the back black glue is directly lamination-laminated on the back of the stainless steel sheet. Although this process solves the problem of deviation between the front black glue, conductive glue and the stainless steel sheet during lamination, this process still has the problem of bubbles after lamination, and at the same time, it will cause deformation and collapse of the product edge; the front black glue and conductive glue also have the problem of glue overflow.

[0006] Because the materials used in this product are relatively special, it also requires the cooperation of multiple types of equipment when manufacturing using traditional manufacturing processes. The processing technology is difficult, and the product production efficiency and yield are low. Therefore, it is urgent to design a new manufacturing process for this product to solve the technical defects in the existing technology. Summary of the Invention

[0007] The purpose of the present invention is to address the above-mentioned problems existing in the prior art and design a double-sided adhesive stamping and shearing manufacturing process for stainless steel sheets, which solves the problem of bubbles and glue overflow easily generated when traditional adhesive materials are attached to stainless steel sheets, improves the accuracy of the attachment position of the adhesive materials and stainless steel sheets, improves the cleanliness of the product during the manufacturing process, and improves the production efficiency and yield of the product.

[0008] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0009] A double-sided adhesive stamping and shearing manufacturing process for stainless steel sheets comprises the following steps:

[0010] (1) First, a protective film is applied to the front of the stainless steel strip, and then the strip is fed into a first punching device. A preset shape area is punched out on the protective film using a first die of the first punching device, and the protective film in the preset shape area is removed;

[0011] (2) Covering the surface of the protective film with a front black tape, and then feeding it into a second punching device, using the second die of the second punching device to punch out the front black tape in the preset shape area, and obtaining the preset shape black tape after punching, and the preset shape black tape is covered on the stainless steel strip body in the preset shape area, and the protective film and the front black tape outside the preset shape area are excluded;

[0012] (3) Covering the front of the stainless steel strip with a conductive tape, and then feeding it into a third punching device, using the third die of the third punching device to punch out the conductive tape, and obtaining a preset shape of conductive tape after punching. The preset shape of conductive tape is covered on the stainless steel strip, and the rest of the conductive tape is removed;

[0013] (4) Covering the front of the stainless steel strip with a matte film and the back of the stainless steel strip with a black adhesive tape to obtain a semi-finished product;

[0014] (5) The semi-finished product is sent to the stamping die equipment for shearing to obtain the finished product.

[0015] As a further preferred embodiment of the present invention, a cleaning step is further included before step (1), wherein the cleaning step is to wipe the front and back of the stainless steel strip with a cleaning roller, and the cleaning agent used by the cleaning roller is alcohol.

[0016] As a further preferred embodiment of the present invention, the stainless steel strip is transported forward and displaced by a conveying device, and a plurality of positioning holes are respectively provided on both side edges of the stainless steel strip. The plurality of positioning holes are arranged at equal intervals and extend along the length direction of the stainless steel strip, and the positioning holes on both side edges of the stainless steel strip are arranged corresponding to each other. The conveying device transports the stainless steel strip forward and displaces it through the positioning holes; the stamping device positions the stainless steel strip through the positioning holes.

[0017] As a further preferred embodiment of the present invention, the positioning hole has a diameter between 3.00 mm and 3.02 mm. After the stainless steel strip is formed, the positioning hole is measured using a go / no-go gauge or a PIN gauge. The positioning hole is pass when its diameter is 3.00 mm and stop when its diameter is 3.02 mm.

[0018] As a further preferred embodiment of the present invention, the distance between the line connecting the centers of the positioning holes on the same side of the stainless steel strip and the edge of the front black tape is 6.39±0.5 mm.

[0019] As a further preferred embodiment of the present invention, the first cutting die, the second cutting die and the third cutting die are respectively inspected before being put into the machine, and the inspection steps include:

[0020] (1) Use CCD equipment to check the blade;

[0021] (2) Measure the blade width, which is less than or equal to 0.03 mm;

[0022] (3) Use a height gauge to check the knife height, and control the knife height between 15.0mm and 15.02mm.

[0023] As a further preferred embodiment of the present invention, the first cutting die, the second cutting die and the third cutting die are all inner straight cutting die, and the inner frames of the cutting die of the first cutting die, the second cutting die and the third cutting die are added with foam.

[0024] As a further preferred embodiment of the present invention, the stamping die equipment in step (5) includes four workstations, wherein the first workstation is an empty station, the second workstation is a shearing station, the third workstation is an empty station, and the fourth workstation is a material taking station;

[0025] The semi-finished product passes through the first work station, the second work station, the third work station and the fourth work station in sequence;

[0026] When the semi-finished product arrives at the second work station, the upper punch and the lower knife of the second work station cooperate to shear the semi-finished product according to the preset finished product shape, and the finished product is obtained after shearing, and the finished product is adhered to the semi-finished product;

[0027] When the finished product adheres to the semi-finished product and arrives at the fourth work station along with the semi-finished product, the fourth work station performs a material-removing operation on the finished product adhered to the semi-finished product, and removes the finished product adhered to the semi-finished product.

[0028] As a further preferred embodiment of the present invention, the fourth workstation removes the finished product adhered to the semi-finished product by means of an adhesive carrier tape; the moving direction of the adhesive carrier tape is perpendicular to the moving direction of the semi-finished product, and the adhesive carrier tape is located below the semi-finished product, and the upper surface of the adhesive carrier tape is provided with adhesive surfaces for sticking the finished product at equal intervals.

[0029] As a further preferred embodiment of the present invention, the fourth workstation is provided with a pushing member, which is used to push the adhesive carrier tape upward in the closed mold state so that the adhesive surface of the adhesive carrier tape is in close contact with the finished product.

[0030] The present invention is beneficial in that:

[0031] The adhesive materials on the front and back of the stainless steel strip are both made of wider adhesive rolls and the stainless steel strip is covered with adhesive, which has a good pasting effect and solves the problem of bubbles and glue overflow when traditional adhesive materials are pasted with stainless steel sheets. The adhesive materials on the front of the product, that is, the preset shape black adhesive and the preset shape conductive adhesive are punched and formed on the stainless steel strip after pasting through a knife die, and the adhesive materials on the back of the product are sheared and formed on the stainless steel strip after pasting through a stamping die equipment. This improves the accuracy of the pasting position of the adhesive material and the stainless steel sheet, and improves the cleanliness of the product during the manufacturing process. Moreover, since the upper punch and the lower knife are used for shearing, the burrs generated on the finished stainless steel sheet are on the front of the finished product, which does not affect the pasting load. The finished product is pasted and exported with the tape, and during actual processing, the burr is ≤0.015mm; the finished product obtained after shearing is finally pasted and exported by the pasting carrier tape, and the finished product is sent to the subsequent processing step by the pasting carrier tape to wait for processing, completing the processing process; the manufacturing process of the present invention is completely different from the traditional manufacturing process, subverting the traditional manufacturing process of the product, and the production capacity when the product is manufactured by the manufacturing process of the present invention is increased from 2500~3000PCS / H of the traditional manufacturing process to 8000~10000PCS / H, effectively improving the production efficiency and yield of the product; the significant increase in output effectively reduces the production cost of the enterprise and increases the economic benefits of the enterprise; the manufacturing process of the present invention has been specifically implemented on the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 1 is a schematic diagram of the front structure of the stainless steel strip after the protective film in the preset shape area is removed in step (1) of the present invention; the slashed shadow portion in the figure is the preset shape area after the protective film is removed;

[0033] Figure 2 This is a schematic diagram of the front structure of the stainless steel strip body in step (2) of the present invention, in which the protective film and the preset shape area are not excluded. The slashed shadow portion in the figure is the preset shape black tape obtained after punching.

[0034] Figure 3 This is a schematic diagram of the front structure of the stainless steel strip body without excluding the remaining conductive tapes in step (3) of the present invention;

[0035] Figure 4 It is a schematic diagram of the stamping die equipment station where the semi-finished product of the present invention is located and a schematic diagram of the position relationship between the semi-finished product and the adhesive carrier tape;

[0036] Figure 5 It is a simplified structural diagram of the second station of the stamping die equipment of the present invention in the mold opening state;

[0037] Figure 6 It is a simplified structural diagram of the second workstation of the stamping die equipment of the present invention in the mold closed state;

[0038] Figure 7 It is a schematic diagram of the cross-sectional structure of the finished product of the present invention;

[0039] Figure 8 Schematic diagram of the upper surface structure of the adhesive carrier tape of the present invention;

[0040] The meaning of the reference numerals in the figures:

[0041] 1-stainless steel strip, 2-protective film, 3-preset shape area, 4-front black tape, 5-preset shape black glue, 6-conductive tape, 7-preset shape conductive glue, 8-matt film, 10-black glue with film, 11-semi-finished product, 12-finished product, 13-back black glue, 14-stainless steel sheet, 15-positioning hole, 16-adhesive carrier tape, 17-adhesive surface, 21-upper punch, 22-lower knife, 23-stripping plate, 24-back stripping plate, 25-upper splint, 26-lower template, 27-lower knife inner top, 28-lower mold limit column. DETAILED DESCRIPTION

[0042] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] like Figure 1-8 As shown, this embodiment is a stainless steel sheet double-sided adhesive stamping and shearing manufacturing process, comprising the following steps:

[0044] (1) First, a protective film 2 is applied to the front side of the stainless steel strip 1, and then the strip is fed into a first punching device. A predetermined shape area 3 is punched out of the protective film 2 using a first die of the first punching device, and the protective film 2 within the predetermined shape area 3 is removed. In this embodiment, the predetermined shape area 3 is a structure having a notch and a shape like a concave character.

[0045] (2) Cover the surface of the protective film 2 with a front black tape 4, and then feed it into a second punching device, and use the second die of the second punching device to punch out the front black tape 4 in the preset shape area 3. After punching, a preset shape black glue 5 is obtained and the preset shape black glue 5 is covered on the stainless steel strip body 1 in the preset shape area 3, excluding the protective film 2 and the front black tape 4 outside the preset shape area 3; in this embodiment, the shape of the preset shape black glue 5 is the same as that of the preset shape area 3, both of which have a notch and are shaped like a concave shape; after excluding the protective film 2 and the front black tape 4 outside the preset shape area 3, check the edge of the preset shape black glue 5. The edge of the preset shape black glue 5 should not have hair or glue threads;

[0046] (3) The front side of the stainless steel strip 1 is covered with a conductive tape 6, which is then fed into a third punching device. The conductive tape 6 is punched out using a third die of the third punching device. After punching, a preset-shaped conductive adhesive 7 is obtained, and the preset-shaped conductive adhesive 7 is covered on the stainless steel strip 1, and the remaining conductive tapes 6 are removed. In this embodiment, the shape of the preset-shaped conductive adhesive 7 is a rectangular structure, and the preset-shaped conductive adhesive 7 is located in the notch of the preset-shaped black adhesive 5, and there is a gap between the preset-shaped conductive adhesive 7 and the preset-shaped black adhesive 5. After removing the remaining conductive tapes 6, the edge of the preset-shaped conductive adhesive 7 is checked. The edge of the preset-shaped conductive adhesive 7 must not have hair or glue threads.

[0047] (4) A matte film 8 is applied to the front of the stainless steel strip 1, and a back black tape is applied to the back of the stainless steel strip 1; a semi-finished product 11 is obtained; in this embodiment, the matte film 8 is used to protect the front of the stainless steel strip 1 covered with the preset-shaped black adhesive 5 and the preset-shaped conductive adhesive 7; the outer surface of the back black tape has a black adhesive film 10 to protect the back black tape and facilitate cutting in the subsequent process;

[0048] (5) The semi-finished product 11 is fed into a stamping die device for shearing to obtain a finished product 12; the stamping die device shears the semi-finished product 11 according to a preset finished product shape. The preset finished product shape in this embodiment is a rectangular structure, and the length and width of the preset finished product shape are slightly larger than the length and width of the preset shape black glue 5, so that there is a blank area between the edge of the preset shape black glue 5 and the edge of the finished product 12 stainless steel sheet 14; when the stamping die device shears the semi-finished product 11, the back black tape is sheared synchronously, and the back black tape is sheared to obtain the back black tape 13, and the back black tape 13 is covered on the finished product 12 stainless steel sheet 14, so that the back of the finished product 12 stainless steel sheet 14 is covered with the back black tape 13, and the size of the back black tape 13 is the same as that of the finished product 12 stainless steel sheet 14.

[0049] This embodiment also includes a cleaning step before step (1), in which the front and back sides of the stainless steel strip 1 are wiped with a cleaning roller, and the cleaning agent used by the cleaning roller is alcohol; this is used to clean the front and back sides of the stainless steel strip 1, and alcohol has a good cleaning effect and a fast evaporation rate.

[0050] In this embodiment, the stainless steel strip 1 is conveyed forward by a conveying device, and a plurality of positioning holes 15 are respectively provided on both side edges of the stainless steel strip 1. The plurality of positioning holes 15 are arranged at equal intervals along the length direction of the stainless steel strip 1, and the positioning holes 15 on both side edges of the stainless steel strip 1 are arranged corresponding to each other. The conveying device conveys the stainless steel strip 1 forward through the positioning holes 15 to ensure the amount of forward displacement; the stamping device positions the stainless steel strip 1 through the positioning holes 15 to ensure the accurate position when the stamping device punches it; the aperture of the positioning hole 15 is between 3.00 mm and 3.02 mm. After the stainless steel strip 1 is formed, the positioning hole 15 is measured using a go / no-go gauge or a PIN gauge. When the aperture diameter of the positioning hole 15 is 3.00 mm, it is passable, and when the aperture diameter of the positioning hole 15 is 3.02 mm, it is stop. When the conveying device conveys the stainless steel strip 1 forward through the positioning holes 15, there should be no pulling of the positioning hole 15.

[0051] In this embodiment, the distance between the line connecting the centers of the positioning holes 15 located on the same side of the stainless steel strip body 1 and the edge of the front black tape 4 is 6.39±0.5mm; while ensuring that the positioning holes 15 do not affect the front black tape 4, the width of the front black tape 4 is increased, thereby ensuring the quality of the preset shape black tape 5 obtained after punching.

[0052] In this embodiment, the first cutting die, the second cutting die and the third cutting die are respectively inspected before being put into the machine. The inspection steps include:

[0053] (1) Use CCD equipment to check the blade to ensure that there is no gap on the blade;

[0054] (2) Measure the blade width, which should be less than or equal to 0.03 mm; ensure the blade is sharp;

[0055] (3) Use a height gauge to check the knife height, and control the knife height between 15.0mm and 15.02mm; ensure that when the knife die cooperates with the stamping equipment to punch and cut, only the protective film 2, the front black tape 4 and the conductive tape 6 are punched and cut, and no knife marks or knife marks are left on the stainless steel strip body 1;

[0056] In this embodiment, the first cutting die, the second cutting die and the third cutting die are all made of high-precision high-speed steel etching cutting dies, and the first cutting die, the second cutting die and the third cutting die are all inner straight cutting dies. Foam is added to the inner frames of the cutting dies of the first cutting die, the second cutting die and the third cutting dies. The length and width of the foam are slightly smaller than the size of the inner frame of the cutting die, for example, the length and width of the foam are 0.2mm smaller than the inner frame of the cutting die; the foam mainly plays a rebound role, that is, it prevents the material being punched by the cutting die from being embedded in the cutting die bottom plate of the inner frame of the cutting die, and can quickly leave after cutting the material without sticking the material; another function is to fix the material at the moment of punching.

[0057] The stamping die equipment described in step (5) of this embodiment adopts a high-precision hardware die. The stamping die equipment includes four workstations, wherein the first workstation is an empty station, the second workstation is a shearing station, the third workstation is an empty station, and the fourth workstation is a material taking station;

[0058] The semi-finished product 11 passes through the first station, the second station, the third station and the fourth station in sequence;

[0059] When the semi-finished product 11 arrives at the second workstation, the upper punch 21 and the lower knife 22 of the second workstation cooperate to shear the semi-finished product 11 according to the preset finished product shape, and the finished product 12 is obtained after shearing, and the finished product 12 is adhered to the semi-finished product 11;

[0060] When the finished product 12 adheres to the semi-finished product 11 and arrives at the fourth work station along with the semi-finished product 11, the fourth work station performs a material removal operation on the finished product 12 adhered to the semi-finished product 11, and removes the finished product 12 adhered to the semi-finished product 11.

[0061] In this embodiment, the fourth workstation removes the finished product 12 adhered to the semi-finished product 11 by means of the adhesive carrier 16; the moving direction of the adhesive carrier 16 is perpendicular to the moving direction of the semi-finished product 11, and the adhesive carrier 16 is located below the semi-finished product 11, and the upper surface of the adhesive carrier 16 is provided with adhesive surfaces 17 for pasting the finished product 12 at equal intervals; the fourth workstation is provided with a pushing piece, which is used to push the adhesive carrier 16 upward in the closed mold state so that the adhesive surface 17 on the upper surface of the adhesive carrier 16 is in close contact with the finished product 12; increasing the adhesive connection stability between the adhesive surface 17 on the upper surface of the adhesive carrier 16 and the finished product 12 is conducive to the adhesive carrier 16 to smoothly take away the finished product 12.

[0062] In this embodiment, the working process and principle of the second station of the stamping die equipment are as follows:

[0063] like Figure 5 As shown, in the mold opening state, the upper punch 21 floats, and the floating height is flat with the stripper plate 23 in the mold opening state, that is, the end face of the upper punch 21 is on the same horizontal plane as the surface of the stripper plate 23 in the mold opening state; there is a gap between the stripping back plate 24 and the upper clamping plate 25; the lower knife 22 is arranged on the lower template 26, and a lower knife inner top 27 is provided inside the lower knife 22, and the lower knife inner top 27 floats, and the floating height is flat with the lower knife 22 surface in the mold opening state, that is, the end face of the lower knife inner top 27 is on the same horizontal plane as the lower knife 22 surface in the mold opening state, and the lower knife 22 surface and the top surface of the lower template 26 are on the same horizontal plane; a lower mold limiting column 28 corresponding to the positioning hole 15 of the semi-finished product 11 stainless steel strip 1 is provided on the lower template 26, and the semi-finished product 11 stainless steel strip 1 is limited to the top of the lower template 26 by the lower mold limiting column 28;

[0064] like Figure 6As shown, in the closed mold state, the upper punch 21 punches through the semi-finished product 11 stainless steel strip 1, and the finished product 12 leaves the semi-finished product 11 stainless steel strip 1. When the mold is opened, the upper punch 21 and the lower knife inner top 27 are each clamped and pressed by the spring to press the finished product 12, wherein the spring force of the lower knife inner top 27 is greater than the spring force of the upper punch 21, and the finished product 12 is slowly pushed upward by the lower knife inner top 27 back to the punching hole of the semi-finished product 11 stainless steel strip 1, and is adhered to the semi-finished product 11 stainless steel strip 1.

[0065] In this embodiment, the adhesive materials on the front and back of the stainless steel strip are both made of wider adhesive rolls and the stainless steel strip in the form of adhesive coating, which has a good pasting effect and solves the problem of bubbles and glue overflow when traditional adhesive materials are pasted with stainless steel sheets; the adhesive materials on the front of the product, that is, the preset shape black adhesive and the preset shape conductive adhesive are both punched and formed on the stainless steel strip after pasting through a knife die, and the adhesive materials on the back of the product are sheared and formed on the stainless steel strip after pasting through a stamping die equipment; thereby improving the accuracy of the pasting position of the adhesive material and the stainless steel sheet, and improving the cleanliness of the product during the manufacturing process; and because the upper punch and the lower knife are used for shearing, the burrs generated on the finished stainless steel sheet are in the direction of the front of the finished product, which does not affect The finished product is pasted and exported by the adhesive carrier tape, and during actual processing, the burr is ≤0.015mm; the finished product obtained after shearing is finally pasted and exported by the adhesive carrier tape, and the finished product is sent to the subsequent processing step by the adhesive carrier tape to wait for processing, completing the processing process; the manufacturing process of the present invention is completely different from the traditional manufacturing process, subverting the traditional manufacturing process of the product, and the production capacity when the product is manufactured by the manufacturing process of the present invention is increased from 2500~3000PCS / H of the traditional manufacturing process to 8000~10000PCS / H, effectively improving the production efficiency and yield of the product; the significant increase in output effectively reduces the production cost of the enterprise and increases the economic benefits of the enterprise; the manufacturing process of the present invention has been specifically implemented on the production line.

[0066] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; in addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0067] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "connected", "connected" and "set" should be understood in a broad sense. For example, it can be a fixed connection or setting, or a detachable connection or setting, or an integral connection or setting; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two components; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the scope of protection of the present invention.

Claims

1. A stainless steel sheet double-sided adhesive stamping and shearing manufacturing process, characterized in that: The following steps are involved: (1) First, a protective film is applied to the front of the stainless steel strip, and then the strip is fed into a first punching device. A preset shape area is punched out on the protective film using a first die of the first punching device, and the protective film in the preset shape area is removed; (2) Covering the surface of the protective film with a front black tape, and then feeding it into a second punching device, using the second die of the second punching device to punch out the front black tape in the preset shape area, and obtaining the preset shape black tape after punching, and the preset shape black tape is covered on the stainless steel strip body in the preset shape area, and the protective film and the front black tape outside the preset shape area are excluded; (3) Covering the front of the stainless steel strip with a conductive tape, and then feeding it into a third punching device, using the third die of the third punching device to punch out the conductive tape, and obtaining a preset shape of conductive tape after punching. The preset shape of conductive tape is covered on the stainless steel strip, and the rest of the conductive tape is removed; (4) Cover the front of the stainless steel strip with a matte film and the back of the stainless steel strip with a black tape; Producing a semi-finished product; (5) The semi-finished product is sent to the stamping die equipment for shearing to obtain the finished product; The first cutting die, the second cutting die and the third cutting die are respectively inspected before being put into the machine, and the inspection steps include: (1) Use CCD equipment to check the blade; (2) Measure the blade width, which is less than or equal to 0.03 mm; (3) Use a height gauge to check the knife height, and control the knife height between 15.0mm and 15.02mm; The first cutting die, the second cutting die and the third cutting die are all inner straight cutting die, and the inner frames of the cutting die of the first cutting die, the second cutting die and the third cutting die are added with foam.

2. A stainless steel sheet double-sided adhesive stamping and shearing manufacturing process according to claim 1, characterized in that: The method further includes a cleaning step before step (1), wherein the cleaning step is to wipe the front and back of the stainless steel strip with a cleaning roller, and the cleaning agent used by the cleaning roller is alcohol.

3. The manufacturing process of double-sided adhesive stamping and shearing of stainless steel sheets according to claim 1, characterized in that: The stainless steel strip is transported forward and displaced by a conveying device. A plurality of positioning holes are respectively provided on both side edges of the stainless steel strip. The plurality of positioning holes are arranged at equal intervals along the length direction of the stainless steel strip, and the positioning holes on both side edges of the stainless steel strip are arranged corresponding to each other. The conveying device transports the stainless steel strip forward and displaces it through the positioning holes; the stamping device positions the stainless steel strip through the positioning holes.

4. The manufacturing process of double-sided adhesive stamping and shearing of stainless steel sheets according to claim 3, characterized in that: The positioning hole has a diameter between 3.00 mm and 3.02 mm. After the stainless steel strip is formed, the positioning hole is measured using a go / no-go gauge or a PIN gauge. When the positioning hole has a diameter of 3.00 mm, it is pass; when the positioning hole has a diameter of 3.02 mm, it is stop.

5. The manufacturing process of double-sided adhesive stamping and shearing of stainless steel sheets according to claim 3, characterized in that: The distance between the line connecting the centers of the positioning holes on the same side of the stainless steel strip and the edge of the front black tape is 6.39±0.5 mm.

6. The manufacturing process of double-sided adhesive stamping and shearing of stainless steel sheets according to claim 1, characterized in that: The stamping die equipment described in step (5) includes four workstations, wherein the first workstation is an empty station, the second workstation is a shearing station, the third workstation is an empty station, and the fourth workstation is a material taking station; The semi-finished product passes through the first work station, the second work station, the third work station and the fourth work station in sequence; When the semi-finished product arrives at the second work station, the upper punch and the lower knife of the second work station cooperate to shear the semi-finished product according to the preset finished product shape, and the finished product is obtained after shearing, and the finished product is adhered to the semi-finished product; When the finished product adheres to the semi-finished product and arrives at the fourth work station along with the semi-finished product, the fourth work station performs a material-removing operation on the finished product adhered to the semi-finished product, and removes the finished product adhered to the semi-finished product.

7. The stainless steel sheet double-sided adhesive stamping and shearing manufacturing process according to claim 6, characterized in that: The fourth work station removes the finished product adhered to the semi-finished product by using an adhesive carrier tape; the moving direction of the adhesive carrier tape is perpendicular to the moving direction of the semi-finished product, and the adhesive carrier tape is located below the semi-finished product, and the upper surface of the adhesive carrier tape is provided with adhesive surfaces for sticking the finished product at equal intervals.

8. The stainless steel sheet double-sided adhesive stamping and shearing manufacturing process according to claim 7, characterized in that: The fourth work station is provided with a pushing piece, and the pushing piece is used to push the adhesive carrier tape upward in the mold closing state so that the adhesive surface of the adhesive carrier tape is in close contact with the finished product.

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