CN113977972B

CN113977972B - Adhesion pressurize mechanism suitable for pressure-sensitive touch panel support

Info

Publication number: CN113977972B
Application number: CN202111235793.1A
Authority: CN
Inventors: 李启强; 周扬; 夏坤
Original assignee: Suzhou Weidazhi Electronic Technology Co Ltd
Current assignee: Suzhou Weidazhi Technology Co ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-04-29
Anticipated expiration: 2041-10-22
Also published as: CN113977972A

Abstract

The invention relates to an adhesion pressure maintaining mechanism suitable for a pressure-sensitive touch panel support. The support frame is arranged on the periphery of the rotary table-board. The first pressing part and the second pressing part are detachably fixed on the support frame so as to respectively press the damping foam and the auxiliary reinforcing sheet on the support body in a one-to-one correspondence manner. In the actual operation process of the automatic assembly line, when the placement jig which performs circumferential rotation motion along with the rotary table top is shifted to the adhesion pressure maintaining station, the first pressing part and the second pressing part act simultaneously to perform displacement motion towards the damping foam and the auxiliary reinforcing sheet respectively until the damping foam and the auxiliary reinforcing sheet are pressed on the support body, so that the damping foam and the auxiliary reinforcing sheet are favorably ensured to have higher adhesion strength relative to the support body, and the phenomenon that the support body falls off due to the action of the excitation force in the subsequent actual application process is avoided.

Description

Adhesion pressurize mechanism suitable for pressure-sensitive touch panel support

Technical Field

The invention relates to the technical field of automatic assembly of pressure-sensitive touch pad supports, in particular to an adhesion pressure maintaining mechanism suitable for a pressure-sensitive touch pad support.

Background

The touch pad is called Touchpad in english name, is arranged at the front side of an upper cover of a notebook computer, and is an input device which can move a cursor on a smooth touch pad by using the sliding operation of fingers.

Touch panels are generally classified into capacitive touch panels and pressure sensitive touch panels. The working principle of the capacitive touch pad is as follows: the capacitive touch pad learns the finger movement condition by means of capacitance induction. When a user's finger approaches the touch panel, the electrostatic field of the touch panel changes, and the internal IC detects the amount of change in capacitance and converts the amount of change into coordinates. The capacitive touch pad mostly adopts a 'jump-board type' structure, and only a point-pressing type structure is arranged below the touch pad, so that the point-pressing effect can hardly be achieved on one side close to the keyboard. The working principle of the pressure-sensitive touch pad is as follows: the pressure-sensitive touch pad (represented by a MacBook computer touch pad) obtains the finger movement condition according to the difference of pressures applied to different areas. In actual operation, the whole touch pad can sink for a certain distance, and meanwhile, the operation feeling of each area of the touch pad is the same. Pressure sensors are uniformly distributed in four diagonal areas right below the touch pad. Very dense wiring is distributed over the pressure sensors. Along with the increase of the finger top touch force, the distance between the touch pad and the pressure sensor is gradually reduced, meanwhile, the contact area between the touch pad and the pressure sensor is increased, the contact area is increased, so that the loop resistance in the sensor is reduced, and the finger movement condition can be known by the pressure-sensitive touch pad.

The pressure-sensitive touch pad support is arranged right below the pressure-sensitive touch pad and is staggered with the pressure sensors so as to balance the pressure force from the fingers on the touch pad. As shown in fig. 3, the pressure-sensitive touch pad support is mainly composed of a support body, an auxiliary reinforcing sheet, and a shock-absorbing foam. Wherein, the auxiliary reinforcing sheet is adhered on the bracket body to increase the ultimate bending strength of the bracket body; the shock absorption foam is also adhered to the bracket body and is arranged in a staggered way with the auxiliary reinforcing sheet. FFC flat cables are inserted at two ends of the support body.

Adopt artifical mode to accomplish the equipment of pressure-sensitive touch pad support usually among the prior art, the workman presses the shock attenuation bubble cotton, supplementary reinforcing piece according to the preface, adheres on the support body through handheld mode promptly, and the operation is wasted time and energy, and the yields is on a low side. In addition, the sizes of the shock absorption foam and the auxiliary reinforcing sheet are small, manual holding and operation are not facilitated, and before the assembly is completed, the bending strength of the support body is extremely low, so that the support body is extremely easy to bend due to overlarge stress in the handheld process, and further the subsequent assembly process is interrupted. Therefore, the company recently developed an automated assembly line for pressure sensitive touch pad holders.

In the actual operation process of the automatic assembly line, after the shock absorption foam and the auxiliary reinforcing sheet are adhered to the bracket body, the adhesion pressure maintaining mechanism is required to apply a certain pressing pressure maintaining force to the shock absorption foam and the auxiliary reinforcing sheet so as to ensure that the shock absorption foam and the auxiliary reinforcing sheet are firmly adhered to the bracket body. However, in the related art, an adhesion pressure maintaining mechanism suitable for a pressure-sensitive touch panel holder is not retrieved. Thus, a skilled person is urgently needed to solve the above problems.

Disclosure of Invention

Therefore, in view of the above-mentioned problems and drawbacks, the present inventors have collected relevant information, evaluated and considered in many ways, and continuously conducted experiments and modifications by technicians with many years of research and development experience in this field, which finally resulted in the appearance of the adhesive pressure maintaining mechanism for pressure sensitive touch panel supports.

In order to solve the technical problem, the invention relates to an adhesion pressure maintaining mechanism suitable for a pressure-sensitive touch pad support, which is matched with a pressure-sensitive touch pad support assembly table. The assembling table comprises a rotary table top and a placing jig fixed on the rotary table top. The pressure-sensitive touch panel support comprises a support body, an auxiliary reinforcing sheet and damping foam. The auxiliary reinforcing sheet is adhered to the stent body to increase the ultimate bending strength of the stent body. The shock absorption foam is also adhered to the bracket body and is arranged in a staggered way with the auxiliary reinforcing sheet. The bracket body is firstly placed on the placing jig, and in the process of rotating along the circumferential direction of the rotary table board, the damping foam and the auxiliary reinforcing sheet are sequentially adhered in place. The adhesion pressure maintaining mechanism comprises a support frame, a first pressing part and a second pressing part. The support frame is arranged on the periphery of the rotary table-board. The first pressing part and the second pressing part are detachably fixed on the support frame so as to respectively press the damping foam and the auxiliary reinforcing sheet on the support body in a one-to-one correspondence manner.

As a further improvement of the technical solution of the present invention, the first pressing portion includes a first linearly moving element, a second linearly moving element, and a first pressing block. The first linear motion element and the second linear motion element are sequentially connected and detachably fixed on the support frame as a whole. The first pressing block is close to/away from the shock absorption foam under the synergistic action of the first linear motion element and the second linear motion element.

As a further improvement of the technical solution of the present invention, the first pressing portion further includes an elastic piece. The elastic sheet is attached to the first pressing block and used for directly pressing the damping foam.

As a further improvement of the technical solution of the present invention, both the first linear motion element and the second linear motion element may preferably be air cylinders.

As a further improvement of the aspect of the present invention, the first pressure-receiving portion further includes a first pressure regulating valve. The first pressure regulating valve is detachably fixed on the support frame so as to be matched with the second linear motion element.

As a further improvement of the technical solution of the present invention, the second abutting portion includes a third linearly moving element and a second abutting block. The third linear motion element is detachably fixed on the support frame. The second pressing block performs displacement movement in the up-down direction under the driving force of the third linear motion element to effect/release pressing of the auxiliary reinforcing sheet.

As a further improvement of the technical solution of the present invention, the third linear motion element is preferably a cylinder.

As a further improvement of the aspect of the present invention, the second biasing portion further includes a second pressure regulating valve. The second pressure regulating valve is detachably fixed on the support frame so as to be matched with the third linear motion element.

As a further improvement of the technical scheme of the invention, the adhesion pressure maintaining mechanism also comprises a powerful balancing part. The force balance part is used for balancing the downward pressure of the rotary table top from the second pressing part and comprises an installation seat, a fourth linear motion element, a sliding frame and a bearing column. The mounting seat is arranged right below the rotary table board. The fourth linear motion element drives the sliding frame to perform displacement motion along the up-down direction, and the fourth linear motion element is detachably fixed on the mounting seat. The bearing columns are used for directly pushing the rotary table board, the number of the bearing columns is multiple, and the bearing columns are all detachably fixed on the sliding frame.

As a further improvement of the technical scheme of the invention, the force balancing part also comprises a sliding block component of the sliding rail. The sliding block assembly of the sliding rail is used for guiding the moving direction of the sliding frame and consists of the sliding rail and a sliding block. The slide rail is detachably fixed on the mounting seat, and the slide block matched with the slide rail is detachably fixed on the sliding frame.

In the actual operation process of the automatic assembly line, after the damping foam and the auxiliary reinforcing sheet are adhered to the bracket body, the adhering and pressure maintaining mechanism positioned at the adhering and pressure maintaining station acts to apply pressing and maintaining force to the damping foam and the auxiliary reinforcing sheet until the set time is kept. The method specifically comprises the following steps: when the placing jig which performs circumferential rotating motion along with the rotary table top is shifted to the adhesion pressure maintaining station, the first pressing part and the second pressing part which are attached to the adhesion pressure maintaining mechanism simultaneously act to perform displacement motion towards the damping foam and the auxiliary reinforcing sheet respectively until the damping foam and the auxiliary reinforcing sheet are pressed on the support body.

Through adopting above-mentioned technical scheme to set up, after the shock attenuation bubble is cotton, supplementary reinforcing piece is accomplished for the support body adhesion, can conveniently, swiftly borrow the adhesion pressurize mechanism to realize pressing the shock attenuation bubble is cotton, supplementary reinforcing piece continuously to ensure that the shock attenuation bubble is cotton, supplementary reinforcing piece has higher adhesive strength for the support body, avoid follow-up practical application in-process because of receiving the emergence of the vibration excitation effect phenomenon of droing on by the support body.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram showing the arrangement position of an adhesion pressure maintaining mechanism applied to a pressure-sensitive touch panel holder with respect to an assembly table in the present invention.

Fig. 2 is a perspective view of an assembly station according to the present invention.

Fig. 3 is a schematic perspective view of a pressure-sensitive touch panel bracket according to the present invention.

Fig. 4 is a perspective view of an adhesion pressure maintaining mechanism suitable for a pressure sensitive touch panel support according to the present invention.

Fig. 5 is a perspective view of a first viewing angle of a first pressing portion of the adhering pressure maintaining mechanism for a pressure-sensitive touch panel support according to the present invention.

Fig. 6 is a perspective view of a second viewing angle of the first pressing portion of the adhering pressure maintaining mechanism for a pressure-sensitive touch panel support according to the present invention.

Fig. 7 is a perspective view of a second pressing portion of the adhering pressure maintaining mechanism for a pressure-sensitive touch panel holder according to the present invention.

Fig. 8 is a perspective view illustrating force balance in the adhesion pressure maintaining mechanism for a pressure sensitive touch panel support according to the present invention.

Fig. 9 is a schematic view of an actual application state of the adhesion pressure maintaining mechanism suitable for the pressure-sensitive touch panel bracket according to the present invention.

1-an assembly station; 11-a rotating table top; 12-placing a jig; 2-a pressure sensitive touch pad support; 21-a stent body; 22-an auxiliary reinforcing sheet; 23-shock absorbing foam; 3-adhering a pressure maintaining mechanism; 31-a support frame; 32-a first abutment; 321-a first cylinder; 322-a second cylinder; 323-first abutment block; 324-an elastic sheet; 33-a second abutment; 331-a third cylinder; 332-a second abutment block; 34-a force balance; 341-mounting seat; 342-a fourth cylinder; 343-a sliding frame; 344-bearing column; 345-a sliding rail block assembly; 35-a voltage regulating unit.

Detailed Description

In the description of the present invention, it is to be understood that the terms "front", "rear", "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, the adhesion holding pressure mechanism 3 disclosed in the present application is applied in cooperation with the assembly table 1. As shown in fig. 2, the assembly table 1 includes a rotary table 11 and a placement jig 12 fixed on the rotary table 11. As shown in fig. 3, the pressure-sensitive touch panel holder 2 includes a holder body 21, an auxiliary reinforcing sheet 22, and a shock-absorbing foam 23. The auxiliary reinforcing sheet 22 is adhered to the stent body 21 to increase the ultimate bending strength of the stent body 21. The shock absorbing foam 23 is also adhered to the bracket body 21 and is disposed to be offset from the auxiliary reinforcing sheet 22. In the course of the actual assembly process,

the support body 21 is first placed in position with respect to the placement jig 12, and then, in the course of following the circumferential rotation of the rotary table 11, the shock-absorbing foam 23, the auxiliary reinforcing sheet 22 are sequentially adhered in position, while the adhesion pressure maintaining mechanism 3 is located downstream of the auxiliary reinforcing sheet 22 adhering station.

As will be described in further detail with reference to the specific embodiment, as shown in fig. 4, the adhesion holding pressure mechanism 3 is mainly composed of several parts, such as a support frame 31, a first pressing portion 32, and a second pressing portion 33. Wherein the supporting frame 31 is arranged at the periphery of the rotary table top 11. The first pressing portion 32 and the second pressing portion 33 are detachably fixed on the supporting frame 31, so as to press the shock-absorbing foam 23 and the auxiliary reinforcing sheet 22 against the bracket body 21 in a one-to-one correspondence manner. As shown in fig. 5, the first pressing portion 32 includes a first cylinder 321, a second cylinder 322, and a first pressing block 323. The first cylinder 321 and the second cylinder 322 are connected in sequence and detachably fixed to the supporting frame 31 as a whole. The first pressing block 323 is urged toward/away from the damping foam 23 by the cooperation of the first and

second cylinders

321 and 322. As shown in fig. 7, the second abutting portion 33 includes a third cylinder 331 and a second abutting block 332. The third cylinder 331 is also detachably fixed to the supporting frame 31. The second pressing block 332 performs a displacement movement in the up-down direction by the driving force of the third cylinder 331 to effect/release the pressing of the auxiliary reinforcement piece 22.

As shown in fig. 9, in the actual operation process of the automated assembly line, after the shock-absorbing foam 23 and the auxiliary reinforcing sheet 22 are preliminarily adhered to the holder body 21, the rotary table 11 is continuously rotated synchronously until the adhesive pressure maintaining station is moved, and at this time, the adhesive pressure maintaining mechanism 3 acts to apply the pressing and holding force to the shock-absorbing foam 23 and the auxiliary reinforcing sheet 22, so that both are tightly adhered to the holder body 21 and are kept for the set time. The method specifically comprises the following steps: when the placing jig 12 performing circumferential rotation movement along with the rotary table 11 is shifted to the adhesion pressure maintaining station, the first air cylinder 321, the second air cylinder 322 and the third air cylinder 331 are simultaneously started to drive the first pressing block 323 and the second pressing block 332 to perform displacement movement towards the damping foam 23 and the auxiliary reinforcing sheet 22 respectively in a one-to-one correspondence manner until the damping foam 23 and the auxiliary reinforcing sheet 22 are tightly pressed on the bracket body 21, and the adhesion strength of the damping foam 23 and the auxiliary reinforcing sheet 22 relative to the bracket body 21 can be effectively improved for a period of time.

Through adopting above-mentioned technical scheme to set up, the adhesion pressurize mechanism who is applicable to pressure-sensitive touch panel support has obtained following beneficial effect at least: after the shock absorption foam 23 and the auxiliary reinforcing sheet 22 are adhered to the bracket body 21, the continuous pressing of the shock absorption foam 23 and the auxiliary reinforcing sheet 22 can be conveniently and quickly realized at a downstream station by means of the adhering and pressure maintaining mechanism 3, so that the shock absorption foam 23 and the auxiliary reinforcing sheet 22 are ensured to have higher adhesive strength relative to the bracket body 21, and the phenomenon that the bracket body 21 falls off due to the action of excitation force in the subsequent practical application process is avoided.

It should be noted that, in addition to the first air cylinder 321 and the second air cylinder 322 cooperating to drive the first pressing block 323, other linear motion elements such as a hydraulic cylinder or a linear motor may be selected according to different practical application scenarios and pressing force magnitudes. Of course, the third cylinder 331 for driving the second pressing block 332 may be replaced by other linear motion elements such as a hydraulic cylinder or a linear motor.

As can be seen from fig. 4, the pressure adjusting unit 35 is also provided in the adhesion pressure maintaining mechanism 3 adapted to the pressure-sensitive touch panel holder. The pressure regulating unit 35 includes a first pressure regulating valve and a second pressure regulating valve. The first pressure regulating valve is detachably fixed on the supporting frame 31 and is matched with the second cylinder 322 to regulate the pressing force value applied to the shock-absorbing cotton 23 by the first pressing block 323. The second pressure regulating valve is also detachably fixed to the supporting frame 31 and is matched with the third cylinder 331 for adjusting the pressing force value applied to the auxiliary reinforcing sheet 22 by the second pressing block 332.

As is known, the cushion foam 23 is formed by foaming plastic particles. When the elastic rubber is acted by an overlarge rigid impact force, the elastic rubber is extremely easy to be damaged by pressure and loses the original elastic property. In view of this, as a further optimization of the structure of the above-described adhering pressure holding mechanism 3 suitable for the pressure-sensitive touch panel holder, as shown in fig. 5 and 6, an elastic sheet 324 is attached to the first pressing block 323. The elastic piece 324 is used to directly press the cushion foam 23, and is preferably made of a rubber material.

In the actual operation process, when the pressing operation of the shock absorption foam 23 and the auxiliary reinforcing sheet 22 is realized by the adhesion pressure maintaining mechanism 3, the rotary table 11 tends to incline due to the action of the biasing force, so that the adhesion position precision of the subsequent shock absorption foam 23 and the auxiliary reinforcing sheet 22 relative to the support body 21 is influenced to a certain extent, in addition, the normal service life of the rotary table 11 is also reduced to a certain extent, and the later maintenance cost is increased. In view of this, as a further optimization of the structure of the above-described adhesion pressure maintaining mechanism 3 suitable for the pressure-sensitive touch panel holder, as shown in fig. 4, it is further provided with a force balance portion 34. The force balance part 34 is used to balance the downward pressure of the rotary table top 11 from the second pressing part 33.

As shown in fig. 8, the force balance portion 34 is mainly composed of a mounting base 341, a fourth cylinder 342, a slip frame 343, and a force bearing column 344. Wherein the mounting seat 341 is arranged right below the rotary table top 11. The fourth cylinder 342 drives the sliding frame 343 to perform a displacement motion in the up-down direction, which is detachably fixed to the mount 341. The bearing columns 344 are used for directly pushing the rotary table 11, and the number of the bearing columns is multiple, and the bearing columns are detachably fixed on the sliding frame 343. Before the first pressing part 32 and the second pressing part 33 perform pressing operations on the shock absorption foam 23 and the auxiliary reinforcing sheet 22, the fourth cylinder 342 is activated to drive the force bearing column 344 to perform an upward displacement movement until the force bearing column critically abuts against the bottom wall of the rotary table top 11 so as to balance the pressing force generated by the subsequent second pressing part 33, thereby effectively ensuring that the rotary table top 11 always maintains good levelness in a working state, and ensuring that the rotary table top 11 has high operation precision and long service life.

Finally, in order to ensure that the bearing column 344 has good guidance when it is subjected to the driving force to perform the displacement motion in the up-down direction, and further ensure that it can be accurately abutted against the rotary table top 11, the force balance portion 34 is further provided with a sliding rail block assembly 345 (as shown in fig. 8). The slide rail and slide block assembly 345 is used for guiding the moving direction of the slide frame 343 and is composed of a slide rail and a slide block. The slide rail is detachably fixed on the mounting base 341, and the slide block adapted to the slide rail is detachably fixed on the sliding frame 343.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An adhesion pressure maintaining mechanism suitable for a pressure-sensitive touch panel support is matched with an assembly table for application; the assembling table comprises a rotary table top and a placing jig fixed on the rotary table top; the pressure-sensitive touch panel bracket comprises a bracket body, an auxiliary reinforcing sheet and damping foam; the auxiliary reinforcing sheet is adhered to the bracket body to increase the ultimate bending strength of the bracket body; the shock absorption foam is also adhered to the bracket body and is arranged in a staggered way with the auxiliary reinforcing sheet; the support body is firstly placed on a placing jig, and in the process of rotating along the circumferential direction of the rotary table board, the damping foam and the auxiliary reinforcing sheet are sequentially adhered in place; the support frame is arranged on the periphery of the rotary table top; the first pressing part and the second pressing part are detachably fixed on the support frame so as to respectively press the shock absorption foam and the auxiliary reinforcing sheet on the support body in a one-to-one correspondence manner;

the first pressing part comprises a first linear motion element, a second linear motion element and a first pressing block; the first linear motion element and the second linear motion element are sequentially connected and detachably fixed on the support frame as a whole; the first pressing block is close to/away from the shock absorption foam under the synergistic action of the first linear motion element and the second linear motion element;

the first pressure-bearing part also comprises a first pressure regulating valve; the first pressure regulating valve is detachably fixed on the support frame so as to be matched with the second linear motion element;

the second pressing part comprises a third linear motion element and a second pressing block; the third linear motion element is detachably fixed on the support frame; the second pressing block performs displacement motion along the up-and-down direction under the action of the driving force of the third linear motion element so as to realize/release pressing of the auxiliary reinforcing sheet;

the second pressure-bearing part also comprises a second pressure regulating valve; the second pressure regulating valve is detachably fixed on the support frame so as to be matched with the third linear motion element;

the device also comprises a powerful balancing part; the force balancing part is used for balancing the downward pressure of the rotary table top from the second pressing part and comprises an installation seat, a fourth linear motion element, a sliding frame and a bearing column; the mounting seat is arranged right below the rotary table board; the fourth linear motion element drives the sliding frame to perform displacement motion along the up-down direction, and the fourth linear motion element is detachably fixed on the mounting seat; the bearing columns are used for directly pushing the rotary table board, and the number of the bearing columns is multiple and the bearing columns are all detachably fixed on the sliding frame.

2. The adhesive pressure maintaining mechanism for a pressure-sensitive touch pad support according to claim 1, wherein the first pressing portion further comprises an elastic sheet; the elastic piece is attached to the first pressing block and used for directly pressing the damping foam.

3. The adhesive pressure maintaining mechanism for a pressure-sensitive touch pad support according to claim 1, wherein the first linear moving element and the second linear moving element are both air cylinders.

4. The adhesion pressure maintaining mechanism for a pressure-sensitive touch pad support according to claim 1, wherein the third linear moving element is a cylinder.

5. The adhesive pressure maintaining mechanism for a pressure sensitive touch pad support of claim 1, wherein the force balance portion further comprises a sliding rail assembly; the sliding block assembly of the slide rail is used for guiding the movement direction of the sliding frame and consists of a slide rail and a sliding block; the slide rail is detachably fixed on the mounting seat, and the slide block matched with the slide rail is detachably fixed on the sliding frame.