Accurate conveying mechanism of light guide plate film coating equipment

Abstract

The utility model relates to the technical field of conveying mechanisms, in particular to an accurate conveying mechanism of light guide plate film laminating equipment, which comprises a conveying belt, conveying rollers mounted on the conveying belt and used for conveying light guide plates, and guide components mounted between the adjacent conveying rollers and used for centering the light guide plates. Each guide assembly comprises a sliding rail, an electric actuator, a sliding block, a guide clamp, a buffer piece, a detection sensor and a bidirectional lead screw and is small and exquisite in structure, a single guide assembly can be installed between any two conveying rollers, the multiple guide assemblies are installed on the conveying belt at intervals, and in the long-stroke conveying process of the conveying belt, the conveying efficiency of the conveying belt is improved. Continuously centering the light guide plate; and 2, the guide assembly is triggered by a detection sensor, when the light guide plate is conveyed to the position above the guide assembly, the light guide plate can be quickly centered, and the corner position of the light guide plate is prevented from colliding with the guide assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying mechanisms, in particular to a precise conveying mechanism for light guide plate coating equipment. Background Art

[0002] The light guide plate lamination process refers to coating a thin film on the surface of the light guide plate to improve its optical performance or achieve a specific visual effect. The lamination process usually requires precise control to ensure that the optical performance and visual effects of the light guide plate meet the design requirements. Therefore, a conveying mechanism is usually used to assist in the lamination.

[0003] The conveying mechanism can replace manual labor to continuously convey the light guide plate to the laminating station of the laminating equipment to achieve efficient lamination, but it still has certain problems: 1) It does not have a long-stroke centering mechanism, and the light guide plate is prone to offset during the conveying process by the conveying roller, thereby affecting the lamination accuracy; 2) Some traditional conveying mechanisms use a baffle mechanism for guidance, and the corners of the light guide plate will collide with it, resulting in deformation of the corners of the light guide plate; 3) It is impossible to achieve centering during the continuous conveying of light guide plates of different sizes; 4) It does not have a buffer structure, and the light guide plate is easily damaged when it is centered; Therefore, in view of the above situation, it is urgent to develop a precise conveying mechanism for the light guide plate laminating equipment to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0004] The purpose of the utility model is to provide a precise conveying mechanism for a light guide plate coating device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a precise conveying mechanism of a light guide plate laminating device, comprising a conveyor belt, a conveyor roller installed on the conveyor belt for conveying the light guide plate, and a guide assembly installed between adjacent conveyor rollers for centering the light guide plate;

[0006] The guide assembly includes a slide rail, an electric actuator, a slider, a guide clamp, a buffer, a detection sensor and a bidirectional screw. The bidirectional screw is embedded in the slide rail, the electric actuator is installed in the middle position of the slide rail, the bidirectional screw is drive-connected to the electric actuator, the slider is embedded in the slide rail, an internal thread matching the bidirectional screw is provided in the middle position of the slider, the slider is transmission-connected to the bidirectional screw, the guide clamp is vertically installed on the top of the slider, the buffer is horizontally installed on the outside of the guide clamp, and the detection sensor is vertically installed in the middle position of the top of the slide rail.

[0007] Preferably, the guide clamp includes a connecting piece, a mounting shell, a Y-shaped bracket, a rubber roller, a guide shaft, a first screw, an end plate bolt and a coupling. The mounting shell is installed on the top of the slider through the connecting piece. The guide shaft is horizontally welded to one side of the Y-shaped bracket. The end of the guide shaft is horizontally penetrated and arranged inside the mounting shell and is slidably connected to the mounting shell. Two rubber rollers are vertically installed at the ends of the Y-shaped bracket. The first screw horizontally penetrates the Y-shaped bracket and extends to the inside of the mounting shell, and is movably connected to the Y-shaped bracket and the mounting shell. The first screw is detachably connected to the Y-shaped bracket through the end plate bolt, and the coupling is nested and installed at one end of the first screw located inside the mounting shell.

[0008] Preferably, the buffer comprises a buffer cylinder, a first piston, a return spring, a second piston, a second screw, a speed regulating valve, a pressure relief tank, a one-way valve and a check valve. The buffer cylinder is horizontally installed on one side of the mounting shell. The first piston and the second piston are both embedded and installed in the buffer cylinder. The return spring is embedded and installed between the first piston and the second piston. The second screw is horizontally penetrated and arranged in the middle position of the end of the buffer cylinder and is connected to the buffer cylinder by a thread. One end of the second screw is fixedly connected to the second piston. The pressure relief tank is horizontally installed at the top end of the buffer cylinder. The speed regulating valve is penetrated and arranged on the side wall of the buffer cylinder. The speed regulating valve is connected and fixed to the pressure relief tank through a conduit. The one-way valve is penetrated and arranged on the top edge of the buffer cylinder. The one-way valve is connected and fixed to the pressure relief tank through a conduit. A horizontal through hole is opened on the edge of the first piston. The check valve is embedded and installed in the through hole. Specifically, after the guide clamp contacts the light guide plate, its impact force will be transmitted to the buffer through the first screw and the coupling, and the buffer realizes the hydraulic buffering effect.

[0009] Preferably, the first piston and the second piston divide the buffer cylinder into three chambers, wherein the first chamber is a reflux chamber, and the second chamber is a compression chamber. The compression chamber is connected to the pressure relief tank through a speed regulating valve and a conduit, the pressure relief tank is connected to the reflux chamber through a one-way valve and a conduit, and the reflux chamber is connected to the compression chamber through a check valve. Specifically, the reflux chamber, the compression chamber and the pressure relief tank are all filled with hydraulic oil. When the first piston squeezes the compression chamber, it drives the hydraulic oil in the compression chamber to enter the pressure relief tank through the speed regulating valve, and after the hydraulic oil in the pressure relief tank is squeezed, it enters the reflux chamber through the one-way valve, thereby realizing a hydraulic buffering effect in this cycle.

[0010] Preferably, the first screw rod and the piston rod of the first piston are detachably connected via a coupling.

[0011] Preferably, the detection sensor is an infrared sensor. Specifically, when the light guide plate is transported to directly above it, it can be detected by it, thereby triggering the electric actuator to drive the two sets of guide clamps to move toward the middle, thereby achieving centering guidance of the light guide plate.

[0012] Compared with the prior art, the utility model provides a precise conveying mechanism for a light guide plate coating device, which has the following beneficial effects:

[0013] 1. The guide assembly has a compact structure. A single guide assembly can be installed between any two conveyor rollers. Multiple guide assemblies are installed on the conveyor belt at intervals, which can realize continuous centering of the light guide plate during the long-stroke conveying process of the conveyor belt.

[0014] 2. The guide component is triggered by a detection sensor. When the light guide plate is transported to the top of the guide component, it can be quickly centered to avoid collision with the corners of the light guide plate;

[0015] 3. It adopts multiple independent guide components to be installed in intervals, and there will be no interference between adjacent guide components, so it can guide and center the light guide plates of different sizes that are continuously transported on the surface of the conveying roller;

[0016] 4. The guide clamp is connected to the buffer. During the guiding and centering process, the guide clamp will generate a certain impact force between the light guide plate, and the buffer using hydraulic buffer can play a good buffering effect, thereby reducing the impact force and protecting the light guide plate from damage. At the same time, it can adjust the elastic potential energy compressed by the return spring and the formation of the compression chamber by adjusting the position of the second piston, thereby controlling the buffering force. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0018] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the guide assembly of the utility model;

[0020] Figure 3 It is a partial cross-sectional view of the slide rail of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the guide fixture of the utility model;

[0022] Figure 5 This is a side longitudinal section view of the guide fixture of the utility model;

[0023] Figure 6 This is a side longitudinal sectional view of the buffer member of the utility model;

[0024] Figure 7 For this utility model Figure 6 A magnified view of part A.

[0025] In the figure: 10, conveyor belt; 20, conveyor roller; 30, guide assembly; 310, slide rail; 320, electric actuator; 330, slider; 340, guide fixture; 341, connector; 342, mounting shell; 343, Y-shaped bracket; 344, rubber roller; 345, guide shaft; 346, first screw; 347, end plate bolt; 348, coupling; 350, buffer; 351, buffer cylinder; 352, first piston; 353, return spring; 354, second piston; 355, second screw; 356, speed control valve; 357, pressure relief tank; 358, one-way valve; 359, check valve; 360, detection sensor; 370, two-way screw. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example:

[0029] See also Figure 1-Figure 7 , the utility model provides a technical solution: a precise conveying mechanism of a light guide plate laminating device, comprising a conveyor belt 10, a conveyor roller 20 installed on the conveyor belt 10 for conveying the light guide plate, and a guide assembly 30 installed between adjacent conveyor rollers 20 for centering the light guide plate;

[0030] The guide assembly 30 includes a slide rail 310, an electric actuator 320, a slider 330, a guide fixture 340, a buffer 350, a detection sensor 360 and a bidirectional screw 370. The bidirectional screw 370 is embedded and installed inside the slide rail 310. The electric actuator 320 is installed in the middle position of the slide rail 310. The bidirectional screw 370 is drivingly connected to the electric actuator 320. The slider 330 is embedded and installed inside the slide rail 310. The middle position of the slider 330 is provided with an internal thread that matches the bidirectional screw 370. The slider 330 is drivingly connected to the bidirectional screw 370. The guide fixture 340 is vertically installed at the top of the slider 330. The buffer 350 is horizontally installed on the outside of the guide fixture 340. The detection sensor 360 is vertically installed at the top middle position of the slide rail 310.

[0031] Preferably, the guide clamp 340 includes a connecting piece 341, a mounting shell 342, a Y-shaped bracket 343, a rubber roller 344, a guide shaft 345, a first screw 346, an end plate bolt 347 and a coupling 348. The mounting shell 342 is mounted on the top of the slider 330 through the connecting piece 341. The guide shaft 345 is horizontally welded to one side of the Y-shaped bracket 343. The end of the guide shaft 345 is horizontally penetrated and arranged inside the mounting shell 342 and is slidably connected to the mounting shell 342. The two rubber rollers 344 are vertically mounted at the ends of the Y-shaped bracket 343. The first screw 346 horizontally penetrates the Y-shaped bracket 343 and extends to the inside of the mounting shell 342 and is movably connected to the Y-shaped bracket 343 and the mounting shell 342. The first screw 346 is detachably connected to the Y-shaped bracket 343 through the end plate bolt 347. The coupling 348 is nested and installed on one end of the first screw 346 located inside the mounting shell 342.

[0032] Preferably, the buffer member 350 includes a buffer cylinder 351, a first piston 352, a return spring 353, a second piston 354, a second screw 355, a speed regulating valve 356, a pressure relief tank 357, a one-way valve 358 and a check valve 359. The buffer cylinder 351 is horizontally installed on one side of the mounting shell 342, the first piston 352 and the second piston 354 are both embedded in the buffer cylinder 351, the return spring 353 is embedded between the first piston 352 and the second piston 354, the second screw 355 is horizontally arranged at the middle position of the end of the buffer cylinder 351, and is connected to the buffer cylinder 351 by a thread, and one end of the second screw 355 is connected to the second piston 354. 54 is fixedly connected, the pressure relief tank 357 is horizontally installed at the top of the buffer cylinder 351, the speed regulating valve 356 is set through the side wall of the buffer cylinder 351, the speed regulating valve 356 is connected and fixed with the pressure relief tank 357 through a conduit, the one-way valve 358 is set through the top edge of the buffer cylinder 351, the one-way valve 358 is connected and fixed with the pressure relief tank 357 through a conduit, a horizontal through hole is opened on the edge of the first piston 352, and the check valve 359 is embedded in the through hole. Specifically, after the guide clamp 340 contacts the light guide plate, its impact force will be transmitted to the buffer 350 through the first screw 346 and the coupling 348, and the buffer 350 realizes the hydraulic buffering effect.

[0033] Preferably, the first piston 352 and the second piston 354 divide the buffer cylinder 351 into three chambers, wherein the first chamber is a reflux chamber, and the second chamber is a compression chamber. The compression chamber is connected to the pressure relief tank 357 through the speed regulating valve 356 and the conduit, the pressure relief tank 357 is connected to the reflux chamber through the one-way valve 358 and the conduit, and the reflux chamber is connected to the compression chamber through the check valve 359. Specifically, the reflux chamber, the compression chamber and the pressure relief tank 357 are all filled with hydraulic oil. When the first piston 352 squeezes the compression chamber, it will drive the hydraulic oil in the compression chamber to enter the pressure relief tank 357 through the speed regulating valve 356. After the hydraulic oil in the pressure relief tank 357 is squeezed, it enters the reflux chamber through the one-way valve 358, and a hydraulic buffering effect is achieved in this cycle.

[0034] Preferably, the first screw rod 346 and the piston rod of the first piston 352 are detachably connected via a coupling 348 .

[0035] Preferably, the detection sensor 360 is specifically an infrared sensor. Specifically, when the light guide plate is transported to just above it, it can be detected by it, thereby triggering the electric actuator 320 to drive the two sets of guide clamps 340 to move toward the middle, thereby achieving centering guidance of the light guide plate.

[0036] Working principle: The guide plate is transported from one end of the conveyor belt 10 to the other end through the conveyor roller 20. When the light guide plate moves above the detection sensor 360, it will be detected by it and trigger the electric actuator 320. The electric actuator 320 drives the guide clamp 340 to move to the middle position through the bidirectional lead screw 370 and the slider 330, and contacts the edges of the light guide plate on both sides through the rubber roller 344 and drives it to be aligned and centered to achieve a precise conveying effect. When the light guide plate leaves the detection sensor 360, the electric actuator 320 drives the slider 330 and the guide clamp 340 to reset. It should be noted here that when the rubber roller 344 of the guide clamp 340 contacts the edge of the light guide plate and generates a force, it will be subjected to a force in the horizontal direction and transmitted to the second screw 346 through the first screw 346. A piston 352, the first piston 352 moves toward the buffer cylinder 351 and squeezes the hydraulic oil in the compression chamber. After being squeezed, the hydraulic oil enters the pressure relief tank 357 through the speed regulating valve 356, and part of the hydraulic oil in the pressure relief tank 357 enters the reflux chamber on the left side of the first piston 352 through the one-way valve 358, thereby realizing a hydraulic buffering effect. When there is no force, the return spring 353 releases elastic potential energy and drives the first piston 352 to move to the left, thereby squeezing the hydraulic oil in the reflux chamber on the left side of the first piston 352 back to the compression chamber through the check valve 359 to maintain the stability of the hydraulic oil. The position of the second piston 354 in the buffer cylinder 351 can be adjusted by rotating the second screw 355, thereby adjusting the compression degree of the return spring 353, controlling the compression chamber path, and realizing the adjustment of the buffering force.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A precise conveying mechanism for a light guide plate coating device, characterized in that: It comprises a conveyor belt (10), a conveyor roller (20) installed on the conveyor belt (10) for conveying a light guide plate, and a guide assembly (30) installed between adjacent conveyor rollers (20) for centering the light guide plate; The guide assembly (30) comprises a slide rail (310), an electric actuator (320), a slider (330), a guide fixture (340), a buffer (350), a detection sensor (360) and a bidirectional screw rod (370); the bidirectional screw rod (370) is embedded and installed inside the slide rail (310); the electric actuator (320) is installed at a middle position of the slide rail (310); the bidirectional screw rod (370) is drivingly connected to the electric actuator (320); and the slider (3 The slider (30) is embedded in the interior of the slide rail (310), an internal thread matched with the bidirectional screw rod (370) is provided in the middle position of the slider (330), the slider (330) is transmission-connected with the bidirectional screw rod (370), the guide clamp (340) is vertically installed on the top of the slider (330), the buffer (350) is horizontally installed on the outside of the guide clamp (340), and the detection sensor (360) is vertically installed in the middle position of the top of the slide rail (310).

2. The precise conveying mechanism of the light guide plate coating equipment according to claim 1, characterized in that: The guide fixture (340) comprises a connecting piece (341), a mounting shell (342), a Y-shaped bracket (343), a rubber roller (344), a guide shaft (345), a first screw rod (346), an end plate bolt (347) and a coupling (348). The mounting shell (342) is mounted on the top of the slider (330) through the connecting piece (341). The guide shaft (345) is horizontally welded to one side of the Y-shaped bracket (343). The end of the guide shaft (345) is horizontally penetrated inside the mounting shell (342) and is connected to the mounting shell (342). The mounting shell (342) is slidably connected, the two rubber rollers (344) are vertically installed at the ends of the Y-shaped bracket (343), the first screw rod (346) horizontally penetrates the Y-shaped bracket (343) and extends to the inside of the mounting shell (342), and is movably connected to the Y-shaped bracket (343) and the mounting shell (342), the first screw rod (346) is detachably connected to the Y-shaped bracket (343) through the end plate bolt (347), and the coupling (348) is nested and installed at one end of the first screw rod (346) located inside the mounting shell (342).

3. The precise conveying mechanism of the light guide plate coating equipment according to claim 1, characterized in that: The buffer component (350) comprises a buffer cylinder (351), a first piston (352), a return spring (353), a second piston (354), a second screw (355), a speed regulating valve (356), a pressure relief tank (357), a one-way valve (358) and a check valve (359); the buffer cylinder (351) is horizontally mounted on one side of the mounting shell (342); the first piston (352) and the second piston (354) are both embedded in the buffer cylinder (351); the return spring (353) is embedded between the first piston (352) and the second piston (354); the second screw (355) is horizontally penetrated and arranged at the middle position of the end of the buffer cylinder (351) and is connected to the buffer cylinder (351) by a thread, one end of the second screw rod (355) is fixedly connected to the second piston (354), the pressure relief tank (357) is horizontally installed at the top of the buffer cylinder (351), the speed regulating valve (356) is arranged through the side wall of the buffer cylinder (351), the speed regulating valve (356) is connected and fixed to the pressure relief tank (357) through a conduit, the one-way valve (358) is arranged through the top edge of the buffer cylinder (351), the one-way valve (358) is connected and fixed to the pressure relief tank (357) through a conduit, a horizontal through hole is opened on the edge of the first piston (352), and the check valve (359) is embedded and installed inside the through hole.

4. The precise conveying mechanism of the light guide plate coating equipment according to claim 3, characterized in that: The first piston (352) and the second piston (354) divide the buffer cylinder (351) into three chambers, wherein the first chamber is a reflux chamber, and the second chamber is a compression chamber. The compression chamber is connected to the pressure relief tank (357) through a speed regulating valve (356) and a conduit, and the pressure relief tank (357) is connected to the reflux chamber through a one-way valve (358) and a conduit, and the reflux chamber is connected to the compression chamber through a check valve (359).

5. The precise conveying mechanism of the light guide plate coating equipment according to claim 2, characterized in that: The first screw rod (346) and the piston rod of the first piston (352) are detachably connected via a coupling (348).

6. The precise conveying mechanism of the light guide plate coating equipment according to claim 1, characterized in that: The detection sensor (360) is specifically an infrared sensor.

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