CN112919020A

CN112919020A - Band conveyer suitable for touch pad solidification line

Info

Publication number: CN112919020A
Application number: CN202110255168.7A
Authority: CN
Inventors: 吴志炜; 曾小旭
Original assignee: Suzhou Weidazhi Electronic Technology Co Ltd
Current assignee: Suzhou Weidazhi Electronic Technology Co Ltd
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2021-06-08
Anticipated expiration: 2041-03-09
Also published as: CN112919020B

Abstract

The invention relates to a belt conveyor suitable for a touch pad curing line, which comprises a support frame, a front conveyor belt, a rear conveyor belt, a power unit, a front belt tensioning device and a rear belt tensioning device. The front conveyor belt and the rear conveyor belt cooperatively bear the touch panel clamping jig. The power unit is used for driving the front conveyor belt and the rear conveyor belt to synchronously rotate. The front belt tensioning device and the rear belt tensioning device are identical in structure and are respectively suitable for the front conveying belt and the rear conveying belt. The rear belt tensioning device comprises a mounting base plate, a tensioning wheel, a rotating shaft, a bearing plate, a moment amplification connecting rod mechanism and a linear motion element. The mounting substrate is fixed with the support frame. The tensioning wheel is arranged right in front of the mounting substrate and always presses the rear conveying belt. The tension pulley is sleeved on the rotating shaft and is integrally arranged on the bearing plate. The linear motion element is assisted with the action of a moment amplifying connecting rod mechanism to drive the bearing plate.

Description

Band conveyer suitable for touch pad solidification line

Technical Field

The invention relates to the technical field of non-standard equipment manufacturing, in particular to a belt conveyor suitable for a touch pad curing line.

Background

A touch pad (TouchPad or TrackPad) is an input device widely used in notebook computers. The touch pad controls the motion of a pointer by sensing the movement of a user's finger, and the sensing detection principle is capacitive sensing. A special integrated circuit board under the touch pad surface constantly measures and reports this trace to ascertain finger motion and position. When the mouse cursor is operated using the touch pad, the mouse cursor is positioned on a corresponding item or icon, and the corresponding item or icon is selected by tapping the touch pad.

As shown in fig. 1, the touch panel includes a touch panel, a circuit board and a bottom plate, wherein the touch panel is fixed to a top surface of the circuit board, and a local area of a bottom surface of the circuit board is fixed to the bottom plate by an adhesive layer. When a user presses the touch panel, the touch panel and the circuit board can swing by taking the part of the adhesive layer as an axis.

Generally, the bonding molding of the touch panel is usually performed by a touch panel clamping jig. The touch pad clamping jig comprises a bearing part and a pressing cover part. The pressing cover part can be freely separated and buckled relative to the bearing part along the vertical direction. In the actual operation process, the base plate is firstly placed on the bearing part, then the glue layer is coated on the base plate, then the assembled touch panel and the circuit board are integrally attached to the base plate, finally the pressing cover part is buckled on the bearing part, and standing is carried out for a period of time, so that the pressure-bearing circuit board and the base plate are firmly bonded.

In the prior art, after the pre-bonded touch pad is placed on the bearing part, the pressing cover part is covered on the bearing part in a manual mode, and the circuit board is tightly pressed on the bottom plate by means of gravity. And then, arranging a plurality of touch pad clamping tools in work on the workshop ground or a workbench in sequence, and after the glue is solidified, manually separating the press cover part and the bearing part to take out the bonded and molded touch pad. The last operation mode is time-consuming and labor-consuming, the labor intensity of workers is high, the production efficiency is low, the final forming quality of the touch pad is greatly influenced by the operation experience of the workers and the mood fluctuation, and quality control is not facilitated; in addition, the touch pad clamping jig needs to occupy a large workshop area, and is not beneficial to on-site 6S management. For this reason, the company has recently developed a touch panel curing line.

In the design process of the touch pad curing line, the touch pad clamping jig needs to be circulated by means of a belt conveyor. The known belt conveyor has the advantages that the length of a conveying belt of the belt conveyor is long, after the belt conveyor is used for a long time, due to the fact that the sag of the belt conveyor is inevitably increased gradually under the drawing force effect, the jumping amount in the operation process is increased, and then poor stability of the touch panel clamping jig in the flowing process is caused. In addition, the loading capacity of the belt conveyor in the operation process is fluctuant, and the tension force and the tension stroke are also fluctuant, so that the control is not easy to carry out, and the slippage of the conveying belt is easily caused. Thus, a skilled person is urgently needed to solve the above problems.

Disclosure of Invention

Accordingly, in view of the above-mentioned problems and disadvantages, the present inventors have collected relevant information, evaluated and considered in many ways, and made continuous experiments and modifications by technicians engaged in the industry through years of research and development experience, which has finally resulted in the emergence of the belt conveyor suitable for the curing line of the touch panel.

In order to solve the technical problem, the invention relates to a belt conveyor suitable for a touch pad curing line, which comprises a support frame, a front conveyor belt, a rear conveyor belt and a power unit. The front conveyor belt and the rear conveyor belt are both arranged on the support frame and are arranged oppositely along the front and rear directions so as to cooperatively bear the touch pad clamping jig. The power unit is supported by the support frame and is used for driving the front conveyor belt and the rear conveyor belt to synchronously rotate in the circumferential direction. In addition, the belt conveyor suitable for the touch pad curing line further comprises a front belt tensioning device and a rear belt tensioning device. The front belt tensioning device and the rear belt tensioning device have the same structure and are respectively suitable for the front conveying belt and the rear conveying belt in a one-to-one corresponding mode. The post belt tensioning device comprises a mounting base plate, a tensioning wheel, a rotating shaft, a bearing plate, a moment amplification connecting rod mechanism and a linear motion element. The mounting substrate is fixed with the support frame. The tensioning wheel is arranged right in front of the mounting substrate and always presses the rear conveying belt. The tension wheel can be freely sleeved on the rotating shaft in a rotating manner around the central axis of the tension wheel and is integrally arranged on the bearing plate. The linear motion element is fixed on the front side surface of the mounting substrate and drives the bearing plate to perform directional displacement motion along the left and right directions under the action of the moment amplification connecting rod mechanism.

As a further improvement of the technical scheme of the invention, the moment amplification connecting rod mechanism comprises a first sliding rail sliding block component, a second sliding rail sliding block component, a first connecting rod, a second connecting rod, a third connecting rod, a first hinge shaft, a second hinge shaft, a third hinge shaft and a fourth hinge shaft. The first slide rail and slide block assembly comprises a first slide rail and a first slide block. The first slide rail is fixed on the front side surface of the mounting substrate and is arranged right and left of the linear motion element. The first slide block matched with the first slide rail is directly driven by the linear motion element. The second sliding rail sliding block component is arranged under the first sliding rail sliding block component in parallel and assembled between the mounting base plate and the force bearing plate. The second slide rail slide block component comprises a second slide rail and a second slide block. The second slide rail is detachably fixed on the front side surface of the mounting base plate, and the second slide block matched with the second slide rail is detachably fixed on the rear side surface of the bearing plate. The first hinge shaft and the second hinge shaft are respectively inserted on the first sliding block and the bearing plate. The third hinge shaft is inserted on the mounting substrate and arranged right left of the second slide rail. The fourth hinge shaft is disposed right in front of the mounting substrate and always remains in a free state. The first connecting rod, the second connecting rod and the third connecting rod are hinged to the fourth hinge shaft at the same time, and the other ends of the first connecting rod, the second connecting rod and the third connecting rod are hinged to the first hinge shaft, the second hinge shaft and the third hinge shaft respectively in a one-to-one correspondence mode.

As a further improvement of the technical scheme of the invention, the tensioning wheel is also provided with a front limiting flange and a rear limiting flange. The front limiting flange and the rear limiting flange are formed by extending the peripheral side wall of the tension wheel outwards, and the distance between the front limiting flange and the rear limiting flange is set as d 1. Assuming that the width value of the rear conveyer belt is d2, the width value is more than or equal to 2mm and less than or equal to 5mm from d2 to d 1.

As a further improvement of the technical scheme of the invention, the linear motion element is preferably an air cylinder, a hydraulic cylinder or a linear motor.

As a further improvement of the technical solution of the present invention, the power unit includes a circumferential rotation driving element, a first transmission shaft, a second transmission shaft, a third transmission shaft, a first synchronizing wheel, a second synchronizing wheel, a third synchronizing wheel, a fourth synchronizing wheel, a fifth synchronizing wheel, a sixth synchronizing wheel, a first synchronizing belt and a second synchronizing belt. The first transmission shaft traverses the support frame and performs circumferential rotation motion around the central axis thereof under the driving force of the circumferential rotation driving element. The first synchronizing wheel and the second synchronizing wheel are sleeved and fixed on the first transmission shaft and are respectively arranged at the back and the front of the supporting frame. The second transmission shaft is also supported by the support frame and is arranged right below the front conveyor belt. The third synchronizing wheel and the fourth synchronizing wheel are sleeved and fixed on the second transmission shaft. The third transmission shaft opposite to the second transmission shaft is also supported by the support frame and is arranged right below the rear conveyor belt. The fifth synchronizing wheel and the sixth synchronizing wheel are sleeved and fixed on the third transmission shaft. The first synchronous belt is sleeved between the first synchronous wheel and the sixth synchronous wheel. And the second synchronous belt is sleeved between the second synchronous wheel and the third synchronous wheel. The fourth synchronizing wheel and the fifth synchronizing wheel respectively directly drive the front conveyor belt and the rear conveyor belt.

As a further improvement of the technical solution of the present invention, the fourth synchronizing wheel is disposed right to the front belt tensioner and at a set distance from the front belt tensioner. The fifth synchronizing wheel is arranged right to the rear belt tensioning device and is separated from the rear belt tensioning device by a set distance.

As a further improvement of the technical scheme of the invention, the circumferential rotation driving element is preferably a rotating motor, a rotating cylinder or a rotating hydraulic cylinder according to different practical application occasions.

According to the technical scheme disclosed by the invention, when the conveyer belt of the belt conveyer suitable for the touch pad curing line is loosened in the debugging process or after running for a period of time, the front belt tensioning device and the rear belt tensioning device can perform adaptive actions according to the tension of the front conveyer belt and the rear conveyer belt, namely real-time compensation of the tension and the fluctuation quantity of the front conveyer belt and the rear conveyer belt is realized, so that the tension of the front conveyer belt and the rear conveyer belt is always maintained within a reasonable value range, and the smoothness of circulation of a touch pad clamping jig is ensured; moreover, through the application of the moment amplification connecting rod mechanism, the requirements of the front belt tensioning device and the rear belt tensioning device on the driving force can be effectively reduced, the requirement of the driving power of the linear motion element matched with the front belt tensioning device and the rear belt tensioning device is further relaxed, the acquisition cost is greatly reduced, and the manufacturing or transformation cost of the belt conveyor suitable for the touch pad curing line is indirectly reduced; in addition, through adopting above-mentioned technical scheme to set up, when leading conveyer belt, rearmounted conveyer belt are impaired to need to be changed, only need start leading belt overspeed device tensioner, rearmounted belt overspeed device tensioner, can contact fast and relax leading conveyer belt, rearmounted conveyer belt, after new leading conveyer belt, rearmounted conveyer belt change completion, restart leading belt overspeed device tensioner, rearmounted belt overspeed device tensioner tighten up it again can.

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 view of the structure of a touch panel.

Fig. 2 is a schematic structural diagram of a touch panel clamping jig.

Fig. 3 is a schematic diagram of the relative position of a belt conveyor suitable for use in a touchpad curing line according to the present invention.

Fig. 4 is a perspective view of a first perspective of a belt conveyor suitable for use in a touch pad curing line in accordance with the present invention.

Fig. 5 is an enlarged view of part I of fig. 4.

Fig. 6 is a perspective view of a second perspective of a belt conveyor suitable for use in a touch pad curing line in accordance with the present invention.

Fig. 7 is a partial enlarged view II of fig. 6.

Fig. 8 is a perspective view of a post belt tensioner in a belt conveyor suitable for use in a touch pad curing line of the present invention.

Fig. 9 is a front view of fig. 8.

Fig. 10 is a perspective view of a second perspective of a belt conveyor suitable for use in a touch panel curing line of the present invention (with a portion of the protective cover removed).

Fig. 11 is a partially enlarged view III of fig. 10.

Fig. 12 is a front view of fig. 10.

Fig. 13 is a sectional view a-a of fig. 12.

Fig. 14 is a top view of fig. 10.

1-a support frame; 2-front conveyer belt; 3, a rear conveyer belt; 4-a power unit; 41-circumferential rotation drive element; 42-a first drive shaft; 43-a second drive shaft; 44-a third drive shaft; 45-a first synchronizing wheel; 46-a second synchronizing wheel; 47-a third synchronizing wheel; 48-a fourth synchronizing wheel; 49-a fifth synchronizing wheel; 410-a sixth synchronizing wheel; 411-first synchronization belt; 412-a second synchronous belt; 5, a front belt tensioning device; 6, a belt tensioning device is arranged at the rear part; 61-a mounting substrate; 62-a tension wheel; 621-front limit flange; 622-rear limit flange; 63-a rotating shaft; 64-bearing plate; 65-moment amplification link mechanism; 651 — first sliding rail slider assembly; 6511-first sliding rail; 6512-first slider; 652-a second sliding rail slider assembly; 6521-second slide rail; 6522-second slider; 653 — a first link; 654-a second link; 655-third link; 656-a first hinge shaft; 657-second hinge axis; 658-third hinge axis; 659-fourth hinge axis; 66-linear motion element.

Detailed Description

In the description of the present invention, it is to be understood that the terms "left", "right", "upper", "lower", "front", "rear", 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.

In order to facilitate the technical solutions disclosed in the present invention to be fully understood by those skilled in the art, a brief description is made in advance for a structure of a touch panel clamping jig and an actual application method, specifically as follows: as shown in fig. 2, the touch panel clamping jig includes a bearing portion and a capping portion. The pressing cover part can be freely separated and buckled relative to the bearing part along the vertical direction. In the actual operation process, the base plate is firstly placed on the bearing part, then the glue layer is coated on the base plate, then the assembled touch panel and the circuit board are integrally attached to the base plate, finally the pressing cover part is buckled on the bearing part, and standing is carried out for a period of time, so that the pressure-bearing circuit board and the base plate are firmly bonded.

As shown in fig. 3, it can be seen that the conveyor line of the touch panel curing line is composed of a plurality of sets of belt conveyors, and includes an upper belt conveyor, a lower belt conveyor, and a rear belt conveyor. The upper belt conveyor and the lower belt conveyor are sequentially stacked along the vertical direction, and the touch pad clamping jigs bearing the touch pads to be bonded are independently transferred to the discharging unit from the feeding unit. The rear belt conveyor and the upper belt conveyor are arranged side by side and keep the same relative position height with the upper belt conveyor so as to enable the unloaded touch pad clamping jig to flow back to the feeding unit from the feeding unit. It should be noted that, in order to ensure the smoothness of the touch pad clamping jig circulation, the upper belt conveyor, the lower belt conveyor and the rear belt conveyor are all provided with belt tensioning systems.

For the rear belt conveyor alone, as shown in fig. 4, 5, 6, and 7, it is mainly composed of a support frame 1, a front conveyor belt 2, a rear conveyor belt 3, a power unit 4, a front belt tensioner 5, and a rear belt tensioner 6. Wherein, leading conveyer belt 2, rearmounted conveyer belt 3 all install on support frame 1, and along the fore-and-aft direction relative and put to bear touch pad clamping tool in coordination. The power unit 4 is supported by the support frame 1 for driving the front conveyor belt 2 and the rear conveyor belt 3 to synchronously rotate in the circumferential direction. The leading belt tensioner 5 and the trailing belt tensioner 6 are of the same construction to be applied to the leading conveyor belt 2 and the trailing conveyor belt 3, respectively, in a one-to-one correspondence. The rear belt tensioner 6 includes a mounting base plate 61, a tensioner 62, a rotating shaft 63, a bearing plate 64, a moment amplifying linkage 65 and a linear motion element 66. The mounting substrate 61 is directly fixed to the support frame 1. The tension pulley 62 is disposed immediately in front of the mounting substrate 61 and constantly presses the rear conveyor belt 3. The tension wheel 62 is freely rotatably sleeved on the rotating shaft 63 around the central axis thereof and is integrally installed on the bearing plate 64. The linear motion element 66 is fixed to the front side surface of the mounting base plate 61 and drives the force bearing plate 64 to perform directional displacement motion in the left-right direction, assisted by the action of the moment amplification link mechanism 65. The linear motion element 66 may be selected from a pneumatic cylinder, a hydraulic cylinder, or a linear motor according to different applications.

Through adopting above-mentioned technical scheme to set up, rearmounted band conveyer has obtained following beneficial technological effect at least, specifically as follows:

1) when the conveyer belt of the belt conveyer suitable for the touch pad curing line is loosened in the debugging process or after running for a period of time, the front belt tensioning device and the rear belt tensioning device can perform adaptive action according to the tension of the front conveyer belt and the rear conveyer belt, namely real-time compensation of the tension and the fluctuation quantity of the front conveyer belt and the rear conveyer belt is realized, so that the tension of the front conveyer belt and the rear conveyer belt is always maintained within a reasonable value range, and the stability of circulation of a touch pad clamping jig is ensured;

2) through the application of the moment amplification connecting rod mechanism, the requirements of the front belt tensioning device and the rear belt tensioning device on the driving force can be effectively reduced, the requirement of the driving power of the linear motion element matched with the front belt tensioning device and the rear belt tensioning device is further relaxed, the purchase cost is greatly reduced, and the manufacturing or transformation cost of the belt conveyor suitable for the touch pad curing line is indirectly reduced;

3) through adopting above-mentioned technical scheme to set up, when the leading conveyer belt, the impaired needs of rearmounted conveyer belt are changed, only need start leading belt overspeed device tensioner, rearmounted belt overspeed device tensioner, can contact the leading conveyer belt fast, the rearmounted conveyer belt relaxs, after new leading conveyer belt, the rearmounted conveyer belt is changed and is accomplished, restart leading belt overspeed device tensioner, rearmounted belt overspeed device tensioner tighten up it again can, whole operation process of renewing is rapid, it is swift, and the workman quantity that required input is less relatively.

Of course, for the same design purpose, the upper belt conveyor and the lower belt conveyor may also be designed with reference to the structure form of the rear belt conveyor.

As can be seen from the above description, the moment amplifying link mechanism 65 plays a crucial role in realizing the tensioning of the front conveyor belt 2 and the rear conveyor belt 3. As is known, the moment amplifying linkage 65 can adopt various designs to transmit the power of the linear motion element 66 to the tension pulley 62, and thus to tension the rear conveyor belt 3, however, a design that is simple, easy to manufacture and implement, relatively low in modification cost, and easy to perform post-maintenance is proposed here, as follows: as shown in fig. 8 and 9, the moment amplifying link mechanism 65 includes a first slide block assembly 651, a second slide block assembly 652, a first link 653, a second link 654, a third link 655, a first hinge 656, a second hinge 657, a third hinge 658, and a fourth hinge 659. The first slide rail slider assembly 651 comprises a first slide rail 6511 and a first slider 6512. The first slide rail 6511 is fixed to the front side surface of the mounting substrate 61 and is arranged right to the linearly-moving element 66. The first slider 6512 fitted to the first slide rail 6511 is directly driven by the linearly moving element 66. The second sliding rail slider assembly 652 is arranged in parallel just below the first sliding rail slider assembly 651, and is fitted between the mounting base plate 61 and the force bearing plate 64. The second sliding rail slider assembly 652 comprises a second sliding rail 6521 and a second slider 6522. The second slide rail 6521 is detachably fixed to the front side of the mounting base plate 61, and the second slider 6522 fitted thereto is detachably fixed to the rear side of the bearing plate 64. The first hinge shaft 656 and the second hinge shaft 657 are respectively inserted into the first slider 6512 and the force bearing plate 64. The third hinge shaft 658 is inserted on the mounting substrate 61 and arranged right to the left of the second slide rail 6521. The fourth hinge shaft 659 is disposed directly in front of the mounting substrate 61 and always remains in a free state. The first link 653, the second link 654, and the third link 655 are simultaneously hinged to the fourth hinge shaft 659, and the other ends are respectively hinged to the first hinge shaft 656, the second hinge shaft 657, and the third hinge shaft 658 in a one-to-one correspondence. Therefore, on one hand, the power value required for driving the rear belt tensioning device 6 is effectively reduced, and the torque amplification ratio can reach 5 through the verification of practical experimental data; on the other hand, the whole moment amplifying link mechanism 65 is extremely compact in design structure, and is favorable for realizing the installation and arrangement of the moment amplifying link mechanism on a rear belt conveyor; on the other hand, the whole operation process of the moment amplification connecting rod mechanism 65 is smooth, the response is rapid, and the instant tensioning of the front conveyor belt 2 and the rear conveyor belt 3 is realized.

As a further optimization of the structure of the moment amplifying link mechanism 65, as shown in fig. 8, a leading limit flange 621 and a trailing limit flange 622 may be further provided on the tension pulley 62. The front position-limiting flange 621 and the rear position-limiting flange 622 extend outward from the peripheral side wall of the tension wheel, and are spaced apart by a distance d 1. Assuming that the width value of the rear conveyer belt 3 is d2, d2-d1 is more than or equal to 2mm and less than or equal to 5 mm. Through adopting above-mentioned technical scheme to set up, in the process takes place to act on rearmounted belt tightener 6, leading flange 621, the rearmounted flange 622 that set up on the take-up pulley 62 can realize reliable spacing to rearmounted conveyer belt 3 to avoid rearmounted conveyer belt 3 self because receive the effect of tensioning ejection force and "off tracking" problem appears.

As a further refinement of the above-described belt conveyor structure suitable for the touch panel curing line, as shown in fig. 10 to 14, the power unit 4 is preferably constituted by several parts of the circumferential rotation driving element 41, the first transmission shaft 42, the second transmission shaft 43, the third transmission shaft 44, the first timing pulley 45, the second timing pulley 46, the third timing pulley 47, the fourth timing pulley 48, the fifth timing pulley 49, the sixth timing pulley 410, the first timing belt 411, and the second timing belt 412. The first transmission shaft 42 traverses the support frame 1 and performs a circumferential rotational movement around its central axis under the driving force of the circumferential rotational driving element 41. The first synchronizing wheel 45 and the second synchronizing wheel 46 are sleeved and fixed on the first transmission shaft 42 and are respectively arranged at the back and the front of the supporting frame 1. The second transmission shaft 43 is also supported by the support frame 1 and is disposed right below the front conveyor belt 2. The third synchronizing wheel 47 and the fourth synchronizing wheel 48 are both sleeved and fixed on the second transmission shaft 43. A third transmission shaft 44 opposite to the second transmission shaft 43 is also supported by the support frame 1 and is disposed right below the rear conveyor 3. The fifth synchronizing wheel 49 and the sixth synchronizing wheel 410 are both sleeved and fixed on the third transmission shaft 44. The first timing belt 411 is disposed between the first timing wheel 45 and the sixth timing wheel 410. And the second timing belt 412 is sleeved between the second timing wheel 46 and the third timing wheel 47. The fourth synchronizing wheel 48 and the fifth synchronizing wheel 49 directly drive the front conveyor belt 2 and the rear conveyor belt 3, respectively. Therefore, on one hand, the front conveyor belt 2 and the rear conveyor belt 3 can be driven simultaneously by one set of circumferential rotation driving elements 41, so that the design structure of the power unit 4 is greatly simplified, and the manufacturing implementation, the space design and the layout are facilitated; on the other hand, the operation synchronism of the front conveyor belt 2 and the rear conveyor belt 3 is effectively ensured, the problem that the operation speeds of the front conveyor belt 2 and the rear conveyor belt 3 are inconsistent is avoided, and the stable execution of the circulation process of the touch pad clamping jig is further ensured.

Here, it should be noted that the circumferential direction rotation driving element 41 for directly driving the first transmission shaft 42 is preferably a rotary electric machine, a rotary air cylinder, or a rotary hydraulic cylinder, depending on the actual application.

Finally, as a further optimization of the above-described belt conveyor structure suitable for the touch panel curing line, as shown in fig. 5 and 11, a fourth synchronizing wheel 48 is disposed right to the front belt tensioner 5 and spaced from the front belt tensioner 5 by a set distance, preferably controlled to be generally 10 to 20 mm. The fifth timing pulley 49 is disposed directly to the right of the rear belt tensioner 6 and is spaced from the rear belt tensioner 6 by a set distance, preferably controlled to be generally 10-20 mm. In this way, the immediacy and rapidity of the pre-belt tensioner 5 and the post-belt tensioner 6 in tensioning the pre-conveyor belt 2 and the post-conveyor belt 3 can be effectively ensured, and the response speed of the pre-belt tensioner 5 and the post-belt tensioner 6 can be reduced as much as possible.

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. A belt conveyor suitable for a touch pad curing line comprises a support frame, a front conveyor belt, a rear conveyor belt and a power unit; the front conveyor belt and the rear conveyor belt are both arranged on the support frame and are oppositely arranged along the front and rear direction so as to cooperatively bear the touch pad clamping jig; the power unit is supported by the support frame and is used for driving the front conveyor belt and the rear conveyor belt to synchronously rotate in the circumferential direction; the front belt tensioning device and the rear belt tensioning device have the same structure and are respectively suitable for the front conveying belt and the rear conveying belt in a one-to-one corresponding mode; aiming at the rear belt tensioning device, the rear belt tensioning device comprises a mounting base plate, a tensioning wheel, a rotating shaft, a bearing plate, a moment amplification connecting rod mechanism and a linear motion element; the mounting substrate is fixed with the support frame; the tensioning wheel is arranged right in front of the mounting substrate and always presses the rear conveying belt; the tension wheel can be freely sleeved on the rotating shaft in a rotating manner around the central axis of the tension wheel and is integrally arranged on the bearing plate; the linear motion element is fixed on the front side surface of the mounting substrate and drives the bearing plate to perform directional displacement motion along the left and right directions under the action of the moment amplification connecting rod mechanism.

2. The belt conveyor suitable for touch pad curing lines of claim 1, wherein the torque amplification linkage comprises a first slide rail slider assembly, a second slide rail slider assembly, a first connecting rod, a second connecting rod, a third connecting rod, a first hinge shaft, a second hinge shaft, a third hinge shaft and a fourth hinge shaft; the first slide rail slide block component comprises a first slide rail and a first slide block; the first sliding rail is fixed on the front side surface of the mounting substrate and is arranged right and left of the linear motion element; the first sliding block matched with the first sliding rail is directly driven by the linear motion element; the second sliding rail sliding block component is arranged under the first sliding rail sliding block component in parallel and assembled between the mounting base plate and the bearing plate; the second slide rail slide block component comprises a second slide rail and a second slide block; the second slide rail is detachably fixed on the front side surface of the mounting base plate, and the second slide block matched with the second slide rail is detachably fixed on the rear side surface of the bearing plate; the first hinge shaft and the second hinge shaft are respectively inserted on the first sliding block and the force bearing plate; the third hinge shaft is inserted on the mounting substrate and is arranged right left of the second slide rail; the fourth hinge shaft is arranged right in front of the mounting substrate and always keeps a free state; the first connecting rod, the second connecting rod and the third connecting rod are hinged to the fourth hinge shaft at the same time, and the other ends of the first connecting rod, the second connecting rod and the third connecting rod are hinged to the first hinge shaft, the second hinge shaft and the third hinge shaft in a one-to-one correspondence mode.

3. The belt conveyor suitable for the touch pad curing line according to claim 1, wherein a front limiting flange and a rear limiting flange are further arranged on the tension wheel; the front limiting flange and the rear limiting flange are formed by extending the peripheral side wall of the tension wheel outwards, and the distance between the front limiting flange and the rear limiting flange is set as d 1; assuming that the width value of the rear conveyer belt is d2, then d2-d1 is not less than 2mm and not more than 5 mm.

4. The belt conveyor for a touch panel curing line according to claim 1, wherein the linear motion member is a cylinder, a hydraulic cylinder, or a linear motor.

5. The belt conveyor for a touch panel curing line according to any one of claims 1 to 4, wherein the power unit includes a circumferential rotation driving element, a first transmission shaft, a second transmission shaft, a third transmission shaft, a first synchronizing wheel, a second synchronizing wheel, a third synchronizing wheel, a fourth synchronizing wheel, a fifth synchronizing wheel, a sixth synchronizing wheel, a first synchronizing belt and a second synchronizing belt; the first transmission shaft traverses the support frame and performs circumferential rotation motion around the central axis thereof under the action of the driving force of the circumferential rotation driving element; the first synchronizing wheel and the second synchronizing wheel are sleeved and fixed on the first transmission shaft and are respectively arranged at the back and the front of the support frame; the second transmission shaft is also supported by the support frame and is arranged right below the front conveyor belt; the third synchronizing wheel and the fourth synchronizing wheel are sleeved and fixed on the second transmission shaft; the third transmission shaft opposite to the second transmission shaft is also supported by the support frame and is arranged right below the rear conveyor belt; the fifth synchronizing wheel and the sixth synchronizing wheel are sleeved and fixed on the third transmission shaft; the first synchronous belt is sleeved between the first synchronous wheel and the sixth synchronous wheel; the second synchronous belt is sleeved between the second synchronous wheel and the third synchronous wheel; the fourth synchronizing wheel and the fifth synchronizing wheel respectively directly drive the front conveyor belt and the rear conveyor belt.

6. The belt conveyor for a touch pad curing line according to claim 5, wherein the fourth synchronizing wheel is arranged right to the front belt tensioner and at a set distance from the front belt tensioner; and the fifth synchronizing wheel is arranged right and right of the rear belt tensioning device and is separated from the rear belt tensioning device by a set distance.

7. The belt conveyor for a touch panel curing line according to claim 5, wherein the circumferential rotation driving element is a rotary motor, a rotary air cylinder, or a rotary hydraulic cylinder.