A 3C product back cover film tearing mechanism and method

Abstract

The present invention discloses a film-tearing mechanism and method for the back cover of a 3C product, wherein the film-tearing mechanism for the back cover of the 3C product comprises a film-tearing head and a film-tearing driving device, wherein the film-tearing head is provided with a first film-tearing surface and a second film-tearing surface, wherein the distance between the first film-tearing surface and the rubber strip on the back cover is smaller than the distance between the second film-tearing surface and the rubber strip on the back cover, and vacuum adsorption holes are provided on the first film-tearing surface and the second film-tearing surface, wherein the driving end of the film-tearing driving device is provided with a driving plate and is configured to drive the film-tearing head to approach or move away from the rubber strip on the back cover, wherein a plurality of guide rods are provided between the driving plate and the film-tearing head, and buffer springs are installed on the guide rods. The film-tearing mechanism for the back cover of the 3C product adopts a method of pre-pressing and adsorbing first and then tearing the film in steps and continuously, which is not only simple in structure, compact and ingenious in design, but also adopts a method of tearing the film in steps and continuously, thereby ensuring the smooth film-tearing, and the operation process of the mechanism is stable and reliable, and can meet the needs of fast-paced film-tearing operations.

Description

Technical Field

[0001] The invention belongs to the automatic assembly technology of 3C products, and in particular relates to a film-tearing mechanism and method for a back cover of a 3C product. Background Art

[0002] The so-called "3C products" are a general term for computer, communication and consumer electronic products, such as computers, tablet computers, mobile phones or digital audio players. Almost all 3C products are equipped with a back cover, on which some accessories need to be assembled, such as adhesive strips, films or labels. Some adhesive strips are provided with a coating on the surface, so the coating on the surface needs to be torn off after the adhesive strips are attached to the back cover. The existing film-tearing mechanism generally has the following difficulties in the film-tearing process used to tear off the back cover of 3C products:

[0003] 1. The adhesive strip is tightly attached to the surface of the back cover, leaving no gap for film tearing;

[0004] 2. Due to the area of ​​the rubber strip itself, the back cover is often placed in a special fixture, leaving very little room for operation;

[0005] 3. The adhesive force of the adhesive strip is strong, and the adsorption force of the back cover in the fixture is smaller than the adhesive force of the adhesive strip. It is easy to pull the back cover out of the fixture during the film removal process, making it impossible to remove the film;

[0006] 4. Unable to meet the fast-paced automatic assembly. Summary of the invention

[0007] The object of the present invention is to provide a 3C product back cover film tearing mechanism and method, so as to solve the problem that the film tearing mechanism in the prior art cannot automatically tear off the film of the adhesive strip attached to the back cover.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] A 3C product back cover film tearing mechanism, comprising:

[0010] The film-tearing head is provided with a first film-tearing surface and a second film-tearing surface, the distance between the first film-tearing surface and the rubber strip on the back cover is smaller than the distance between the second film-tearing surface and the rubber strip on the back cover, and the first film-tearing surface and the second film-tearing surface are both provided with a vacuum adsorption device,

[0011] The film tearing driving device has a driving plate at its driving end and is configured to drive the film tearing head to approach or move away from the rubber strip on the rear cover. A plurality of guide rods are arranged between the driving plate and the film tearing head, and a buffer spring is installed on the guide rod.

[0012] The film-tearing driving device drives the film-tearing head to approach the rubber strip, and finally the first film-tearing surface overcomes the elastic force of the buffer spring and is pressed on the middle part of the rubber strip, and the second film-tearing surface overcomes the elastic force of the buffer spring and is pressed on the edge of the rubber strip. When tearing the film, the film-tearing driving device drives the film-tearing head to return away from the rubber strip. During the return process of the film-tearing head, the film at the edge of the rubber strip is first adsorbed and peeled off by the second film-tearing surface, and then the film in the middle of the rubber strip is adsorbed and peeled off step by step and continuously by the first film-tearing surface.

[0013] Furthermore, the rubber strip is a square structure as a whole, and a protrusion extends outward at one corner. The film tearing drive device drives the film tearing head close to the rubber strip, and finally the first film tearing surface overcomes the elastic force of the buffer spring and is pressed on the middle part of the rubber strip, and the second film tearing surface overcomes the elastic force of the buffer spring and is pressed on the protrusion.

[0014] Furthermore, the first film-tearing surface and the second film-tearing surface are both planar structures parallel to the rubber strip, and the vacuum adsorption device is a plurality of vacuum adsorption holes opened on the first film-tearing surface and the second film-tearing surface.

[0015] Furthermore, the film tearing head is located above the rear cover, and the film tearing driving device adopts a cylinder, and the cylinder drives the film tearing head to move up and down through the driving plate.

[0016] Preferably, the film tearing head adopts a split structure, which includes a first module and a second module, the first module is fixed to a side surface of the second module and the first film tearing surface is arranged at the bottom end thereof, and the second film tearing surface is arranged at the bottom end of the second module.

[0017] Preferably, the top of the second module is bent to one side to form an upper connecting block, the first module is fixed below the upper connecting block, and the two opposite sides of the first module are extended outward with lower connecting blocks, and the upper connecting block and the lower connecting block are correspondingly provided with through holes, one end of the guide rod is connected to the lower connecting block, and the other end is connected to the driving plate after passing through the upper connecting block, an upper buffer spring is provided on the outer sleeve of the guide rod between the upper connecting block and the driving plate, and a lower buffer spring is provided on the outer sleeve of the guide rod between the upper connecting block and the lower connecting block.

[0018] Preferably, a slope is provided at the bottom of one side of the first module close to the second module for avoiding when tearing the film.

[0019] Preferably, the tail end of the cylinder is vertically fixed on the transplanting plate, and the head end serves as the driving end with its piston rod arranged downward, the end of the piston rod is fixedly connected to the driving plate, the transplanting plate is connected to a transplanting drive assembly, the transplanting drive assembly includes a linear guide rail and a transplanting electric cylinder, one end of the transplanting plate is assembled on the linear guide rail through a slider, and the other end is connected to the output flange of the transplanting electric cylinder.

[0020] A 3C product back cover film peeling method, which is implemented by the above-mentioned 3C product back cover film peeling mechanism, comprises the following steps:

[0021] Driving the film-tearing head to pre-press and adsorb the rubber strip, so that the first film-tearing surface is pressed on the middle of the rubber strip and the second film-tearing surface is pressed on the edge of the rubber strip;

[0022] The film-tearing head is driven back to tear the film, and the film at the edge of the rubber strip is first peeled off through the vacuum adsorption holes on the second film-tearing surface. At this time, the first film-tearing surface is still pressed on the middle of the rubber strip, and the film-tearing head continues to move away from the rubber strip. When the first film-tearing surface is lifted off the rubber strip, the film in the middle of the rubber strip is peeled off step by step and continuously through the vacuum adsorption holes on it.

[0023] The film peeling head continues to move until the film on the adhesive strip is completely peeled off.

[0024] Furthermore, the first film-tearing surface is pressed at 2 / 3 of the entire length of the adhesive strip, so that when the first film-tearing surface is lifted off the adhesive strip, 2 / 3 of the entire length of the coating is peeled off.

[0025] The beneficial effects of the present invention are that, compared with the prior art, the 3C product back cover film tearing mechanism and method adopts a method of pre-pressing and adsorbing first and then tearing the film in steps and continuously, which has the following advantages in specific applications:

[0026] 1) Simple and compact structure, ingenious design;

[0027] 2) The film tearing head and the rubber strip are seamlessly connected to facilitate vacuum adsorption;

[0028] 3) Before tearing the film, the rubber strip is pre-pressed and positioned by the film tearing head, and the rubber strip is re-positioned and pressed to ensure the stability and reliability of the rubber strip bonding;

[0029] 4) The step-by-step continuous film tearing method can ensure that the back cover will not be lifted from the fixture during the film tearing process, ensuring the smooth film tearing;

[0030] 5) The operation process of the mechanism is stable and reliable, and can meet the fast-paced film tearing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1It is a three-dimensional structural schematic diagram of a 3C product back cover film tearing mechanism provided by an embodiment of the present invention;

[0032] Figure 2 It is a schematic diagram of the assembly of a 3C product back cover film tearing mechanism provided by an embodiment of the present invention;

[0033] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0035] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood. It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there can also be a central component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and are not intended to be the only implementation method. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] See also Figure 1 As shown, Figure 1 It is a three-dimensional structural schematic diagram of a 3C product back cover film tearing mechanism provided by an embodiment of the present invention.

[0037] A film-tearing mechanism for a back cover of a 3C product comprises a cylinder 1 and a film-tearing head 2. The head end of the cylinder 1 is used as a driving end, and its piston rod is arranged downward. The end of the piston rod is fixedly connected to a driving plate 3. The film-tearing head 2 adopts a split structure, including a first module 20 and a second module 21. The first module 20 is fixed to a side surface of the second module 21 and a first film-tearing surface 22 is arranged at its bottom end. The second module 21 is provided with a second film-tearing surface 23 at its bottom end. The first film-tearing surface 22 and the second film-tearing surface 23 are both planar structures parallel to the horizontal plane. The top end of the second module 21 is bent to one side to form The upper connecting block 24, the first module 20 is fixed below the upper connecting block 24, and the two opposite sides of the first module 20 are extended outward with lower connecting blocks 25, and two through holes are correspondingly opened on the upper connecting block 24 and the lower connecting block 25. One end of the two guide rods 4 is connected to the lower connecting block 25 through a limit head, and the other end passes through the upper connecting block 24 and is connected to the driving plate 3 through the limit head. The guide rod 4 between the upper connecting block 24 and the driving plate 3 is provided with an upper buffer spring 5, and the guide rod 4 between the upper connecting block 24 and the lower connecting block 25 is provided with a lower buffer spring 6.

[0038] The height of the first film-tearing surface 22 is smaller than the height of the second film-tearing surface 23, and the height difference between the two is proportional to the length of the corresponding film to be peeled, that is, the longer the length of the film along the peeling direction, the greater the height difference between the first film-tearing surface 22 and the second film-tearing surface 23. A plurality of vacuum adsorption holes 7 are provided on the first film-tearing surface 22 and the second film-tearing surface 23, and the vacuum adsorption holes 7 are connected to the vacuum device through a vacuum channel and a pipeline. A slope 26 for avoiding when tearing the film is provided at the bottom of the first module 20 near the second module 21.

[0039] See also Figures 1 to 3 As shown, in order to improve work efficiency, a double-station structure is adopted in this embodiment, that is, two sets of the above-mentioned 3C product back cover tearing film mechanism are arranged to realize the simultaneous peeling of the coating of the rubber strips 9 on the two 3C product back covers 8, and the two 3C product back covers 8 are placed on corresponding fixtures respectively. The rubber strip 9 is a square structure as a whole, and a protrusion 90 extends outward at one corner. The two sets of the above-mentioned 3C product back cover tearing film mechanism are arranged above the back cover 8, and the tail ends of the cylinders 1 of the two sets of the above-mentioned 3C product back cover tearing film mechanism are fixed on the bottom surface of the transplanting plate 10 in parallel and at intervals. The transplanting plate 10 is connected to a transplanting drive assembly, and the transplanting drive assembly includes a linear guide rail 11 and a transplanting electric cylinder 12. One end of the transplanting plate 10 is assembled on the linear guide rail 11 through a slider, and the other end is connected to the output flange of the transplanting electric cylinder 12.

[0040] The specific process of film peeling of the back cover film peeling mechanism of the above 3C product is as follows:

[0041] 1) The transfer electric cylinder 12 transfers the film tearing head 2 to the top of the rubber strip 9.

[0042] 2) The piston rod of the cylinder 1 extends out through the drive plate 3 to drive the entire film tearing head 2 to move downward until the elastic force of the upper buffer spring 5 and the lower buffer spring 6 is overcome, so that the first film tearing surface 22 is pressed on the middle part of the rubber strip 9 and the second film tearing surface 23 is pressed on the protrusion 90. This step is mainly to position and press the rubber strip 9 again before film tearing to ensure the reliability of the bonding of the rubber strip 9.

[0043] 3) The piston rod of the cylinder 1 retracts and drives the entire film-tearing head 2 to move upward through the driving plate 3. The second film-tearing surface 23 is first lifted off the rubber strip 9. The vacuum adsorption holes 7 on the second film-tearing surface 23 first absorb the film at the bump 90 for peeling. Before the film is peeled off to the middle, the first film-tearing surface 22 is pressed on the rubber strip 9 to prevent the rear cover 8 from being lifted from the fixture during the film-tearing process. When the first film-tearing surface 22 lifts off the rubber strip 9, the film in the middle of the rubber strip 9 is peeled off step by step and continuously through the vacuum adsorption holes 7 thereon.

[0044] 4) The film peeling head continues to move until the film on the rubber strip is completely peeled off.

[0045] It should be noted that the best solution in step 2) is: the first film tearing surface 22 is pressed on 2 / 3 of the overall length of the rubber strip 9, so that when the first film tearing surface 22 is lifted off the rubber strip 9, 2 / 3 of the overall length of the coating is peeled off, so as to facilitate the smooth peeling of the subsequent coating.

[0046] It should be noted that the automatic mounting equipment in this embodiment is not limited to tearing off the adhesive film on the back cover of 3C products. Obviously, according to needs, the film tearing mechanism in this embodiment can also be used for automatic tearing off of adhesive film on housings and plate parts in the same or similar fields.

[0047] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above examples. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A 3C product back cover film tearing mechanism, characterized in that: These include, The film-tearing head adopts a split structure, and the film-tearing head includes a first module and a second module. The first module is fixed to a side surface of the second module and a first film-tearing surface is arranged at the bottom end thereof, and a second film-tearing surface is arranged at the bottom end of the second module. The distance between the first film-tearing surface and the rubber strip on the back cover is smaller than the distance between the second film-tearing surface and the rubber strip on the back cover, and vacuum adsorption devices are arranged on both the first film-tearing surface and the second film-tearing surface. The film tearing driving device has a driving plate at its driving end and is configured to drive the film tearing head to approach or move away from the rubber strip on the rear cover. A plurality of guide rods are arranged between the driving plate and the film tearing head, and a buffer spring is installed on the guide rod. The top of the second module is bent to one side to form an upper connecting block, the first module is fixed below the upper connecting block, and two opposite sides of the first module are extended outwardly with lower connecting blocks, and the upper connecting block and the lower connecting block are correspondingly provided with through holes, one end of the guide rod is connected to the lower connecting block, and the other end passes through the upper connecting block and is connected to the driving plate, an upper buffer spring is provided on the guide rod jacket between the upper connecting block and the driving plate, and a lower buffer spring is provided on the guide rod jacket between the upper connecting block and the lower connecting block, and a slope for avoiding when tearing the film is provided on the bottom of the first module close to the second module. The film tearing head is located above the rear cover, and the film tearing driving device adopts a cylinder, which drives the film tearing head to move up and down through the driving plate. The film-tearing driving device drives the film-tearing head to approach the rubber strip, and finally makes the first film-tearing surface overcome the elastic force of the buffer spring and press the middle part of the rubber strip, and the second film-tearing surface overcome the elastic force of the buffer spring and press the edge of the rubber strip. When tearing the film, the film-tearing driving device drives the film-tearing head to return away from the rubber strip. During the return process of the film-tearing head, the film at the edge of the rubber strip is first adsorbed and peeled off by the second film-tearing surface, and then the film in the middle of the rubber strip is adsorbed and peeled off step by step by the first film-tearing surface. The rubber strip is a square structure as a whole, and one corner of it has a protrusion extending outward. The film-tearing driving device drives the film-tearing head to approach the rubber strip, and finally makes the first film-tearing surface overcome the elastic force of the buffer spring and press the middle part of the rubber strip, and the second film-tearing surface overcomes the elastic force of the buffer spring and presses on the protrusion.

2. The 3C product back cover film tearing mechanism according to claim 1, characterized in that: The first film-tearing surface and the second film-tearing surface are both planar structures parallel to the rubber strip, and the vacuum adsorption device is a plurality of vacuum adsorption holes opened on the first film-tearing surface and the second film-tearing surface.

3. The 3C product back cover film tearing mechanism according to claim 1, characterized in that: The tail end of the cylinder is vertically fixed on the transplanting plate, and the head end serves as the driving end with its piston rod arranged downward. The end of the piston rod is fixedly connected to the driving plate. The transplanting plate is connected to a transplanting driving assembly, which includes a linear guide rail and a transplanting electric cylinder. One end of the transplanting plate is assembled on the linear guide rail through a slider, and the other end is connected to the output flange of the transplanting electric cylinder.

4. A method for tearing off the film on the back cover of a 3C product, characterized in that: The method of tearing off the adhesive strip on the back cover of a 3C product by using the 3C product back cover tearing off mechanism described in any one of claims 1 to 3 comprises the following steps: Driving the film-tearing head to pre-press and adsorb the rubber strip, so that the first film-tearing surface is pressed on the middle of the rubber strip and the second film-tearing surface is pressed on the edge of the rubber strip; The film-tearing head is driven back to tear the film, and the film at the edge of the rubber strip is first peeled off through the vacuum adsorption holes on the second film-tearing surface. At this time, the first film-tearing surface is still pressed on the middle of the rubber strip, and the film-tearing head continues to move away from the rubber strip. When the first film-tearing surface is lifted off the rubber strip, the film in the middle of the rubber strip is peeled off step by step and continuously through the vacuum adsorption holes on it. The film peeling head continues to move until the film on the adhesive strip is completely peeled off.

5. The method for tearing off the back cover of a 3C product according to claim 4, characterized in that: The first film-tearing surface is pressed at 2 / 3 of the entire length of the adhesive strip, so that when the first film-tearing surface is lifted away from the adhesive strip, 2 / 3 of the entire length of the covering film is peeled off.

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