Anti-collision device of liquid crystal substrate glass grinding and washing machine table

Abstract

The invention discloses an anti-collision device of a liquid crystal substrate glass grinding machine table, which comprises a detection mechanism, a buffer mechanism and a PLC control system, the detection mechanism comprises a mounting bracket, a linear sliding block, a travel switch and a trigger piece, the mounting bracket comprises a trigger piece bracket and a travel switch bracket, the buffer mechanism comprises a mounting base, a spring support rod and a stop block, and the linear sliding block is arranged on the mounting base. The installation base comprises a stop block support and a spring supporting rod base, the spring supporting rod comprises a spring, a damping rod, a rubber head and a fixing plate, and the PLC control system comprises a PLC, a servo motor controller, a servo motor and an HMI interactive screen. According to the anti-collision device for the liquid crystal substrate glass grinding and washing machine table, the situation that two machine tables collide and interfere, serious equipment failures such as bending deformation of machine table guide rails are caused, and serious damage is caused to equipment is avoided, and the later grinding and washing precision is not affected. And meanwhile, the situation that the maintenance process is complex and time-consuming, the line needs to be stopped for three to five days, and the economic loss is heavy is avoided.

Description

Technical Field

[0001] The invention relates to the field of liquid crystal substrate glass manufacturing, in particular to a liquid crystal substrate glass grinding and washing machine platform anti-collision device. Background Art

[0002] In the LCD substrate glass production line, the semi-finished LCD substrate glass flows to the grinding and cleaning process after the precision cutting process to grind and clean its four sides and four corners, so as to improve the quality of the glass corners; in the glass grinding process, because the four sides need to be ground, two machines are set inside the equipment, and the two machines are installed on the same pair of guide rails. The glass is transported between the two machines through the gripping device, and the two machines grind and clean the glass in the X and Y directions respectively;

[0003] However, in actual use, there have been many cases of collisions and interference between the two machines due to equipment failure, program loopholes or human errors, resulting in serious equipment failures such as bending and deformation of the machine guide rails, leaving serious damage to the equipment and greatly affecting the subsequent grinding and cleaning accuracy; at the same time, the maintenance process is complicated and time-consuming, often requiring the line to be shut down for three to five days, causing significant economic losses. Summary of the invention

[0004] The object of the present invention is to provide an anti-collision device for a liquid crystal substrate glass grinding and cleaning machine to solve the defects mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, an anti-collision device for a liquid crystal substrate glass grinding and washing machine is provided, comprising a detection mechanism, a buffer mechanism and a PLC control system, wherein the detection mechanism comprises a mounting bracket, a linear slider, a travel switch and a trigger piece, the mounting bracket comprises a trigger piece bracket and a travel switch bracket, the buffer mechanism comprises a mounting base, a spring strut and a stop block, the mounting base comprises a stop block bracket and a spring strut base, the spring strut comprises a spring, a damping rod, a rubber head and a fixing plate, the PLC control system comprises a PLC, a servo motor controller, a servo motor and an HMI interactive screen; the tail of the travel switch bracket is fixed to the forward direction side of the grinding and washing machine A by screws, and the lower side of the middle section of the travel switch bracket is fixed to the surface of the linear slider by screws, the tail of the trigger piece bracket is fixed to the backward direction side of the grinding and washing machine B by screws, and the lower side of the middle section of the trigger piece bracket is fixed to the linear slider by screws.

[0006] Furthermore, a linear guide rail is installed between the grinding and washing machine A and the grinding and washing machine B, and the two sets of linear guide rails are arranged in parallel. At the same time, the size of the linear guide rail is adapted to the linear slider, and the linear slider is slidably arranged on the outside of the linear guide rail, and the cross-section of the linear slider is "U" shaped.

[0007] Furthermore, the trigger plate bracket is arranged in two groups on the end surface of the grinding and washing machine table B, and the travel switch bracket is arranged in two groups on the end surface of the grinding and washing machine table A, and linear sliders are installed at the bottom of the two groups of trigger plate brackets and the two groups of travel switch brackets.

[0008] Furthermore, the detection mechanism and the buffer mechanism are each provided in two sets, and the two sets of the detection mechanism and the buffer mechanism are symmetrically installed on both sides of the grinding and washing machine platform A and the grinding and washing machine platform B.

[0009] Furthermore, the travel switch is a rotary rod travel switch, and there are two groups of travel switches, which are installed on the end face of the travel switch bracket at the front and rear. At the same time, the travel switch bracket is made of metal material and is arranged in an "I" shape, and trigger plates are installed on both groups of travel switches, and the ends of the trigger plates are bent upward.

[0010] Furthermore, the damping rod is a cylindrical structure made of stainless steel, and the fixing plate is a rectangular structure made of aluminum alloy. A guide groove is provided directly below the fixing plate, and the guide groove is assembled with a guide bar fixed to the top of the trigger plate bracket, and the stop block is a rectangular structure made of nylon.

[0011] Furthermore, a spring is installed on the outside of the damping rod, and a rubber head is installed on the end of the damping rod, the rubber head includes a trigger seat, and a stud is fixedly installed on the bottom of the trigger seat, and a trigger switch is installed inside the trigger seat, and a wiring harness is provided on the trigger switch, and the trigger switch is electrically connected to the alarm installed on the scrubber through the wiring harness.

[0012] Furthermore, the stud is screwed and fixed in a screw hole opened on one end face of the damping rod away from the spring support rod base, and a screw position is opened on the upper side of the circumferential inner wall of the trigger seat. At the same time, a screw sleeve is fixedly installed on the bottom of the rubber contact seat, the screw sleeve is adapted to the size of the screw position, and the screw sleeve is screwed inside the screw position.

[0013] Furthermore, the rubber contact seat and the trigger seat are screwed and fixed via a screw-fitting position and a screw-fitting sleeve, and a trigger block is installed inside the rubber contact seat. The trigger block is cylindrical and is arranged opposite to the trigger switch.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the present invention, when the grinding and washing machine A and the grinding and washing machine B cross the safe working distance and enter the anti-collision program trigger range, the trigger piece in the detection component toggles the travel switch, and this electrical signal is fed back to the PLC control system, and the system starts the anti-collision emergency program: the motors in the grinding and washing machine A and the grinding and washing machine B are urgently braked, and all grinding and washing equipment stops working, and the HMI interactive screen alarms in real time;

[0016] 2. In the present invention, if the brakes are not applied in time or fail, and the grinding and washing machine A and the grinding and washing machine B continue to move forward, the rubber head in the buffer mechanism will abut against the stop block, triggering a controllable collision state, and the spring strut will be compressed backward to play a buffering role; by installing components on the two machines and the guide rails respectively to determine whether the anti-collision mechanism is triggered, the mechanism is convenient for inspection, maintenance, and repair, and at the same time avoids the collision and interference between the two machines, causing serious equipment failures such as bending and deformation of the machine guide rails, and leaving serious trauma to the equipment, without affecting the later grinding and washing accuracy. At the same time, it avoids the complicated and time-consuming maintenance process, which often requires the line to be stopped for three to five days, causing significant economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0018] Figure 1 It is a front view schematic diagram of the structure of the present invention;

[0019] Figure 2 for Figure 1 Side view of

[0020] Figure 3 This is a schematic diagram of the structural trigger plate bracket of the present invention and the mounting structure thereon;

[0021] Figure 4 This is a schematic diagram of the travel switch bracket of the present invention and the mounting structure thereon;

[0022] Figure 5 This is a schematic diagram of the rubber head and its installation structure;

[0023] Figure 6 for Figure 5 A front view of

[0024] Figure 7 is a schematic diagram of the damping rod and its installation structure;

[0025] Figure 8 This is a schematic diagram of the internal structure of the rubber head of the present invention;

[0026] Fig. 9 The structure of the present invention Figure 8 Bottom view of

[0027] Fig.10 The structure of the present invention Figure 8 sectional view of .

[0028] [reference numerals]

[0029] 10. Mounting bracket; 11. Trigger plate bracket; 12. Travel switch bracket; 20. Linear slider; 30. Travel switch; 40. Trigger plate; 100. Mounting base; 101. Stop block bracket; 102. Spring strut base; 110. Spring strut; 111. Spring; 112. Damping rod; 113. Rubber head; 1131. Stud; 1132. Trigger seat; 1133. Wiring harness; 1134. Screw-on position; 1135. Trigger switch; 1136. Screw-on sleeve; 1137. Rubber contact seat; 11371. Trigger block; 114. Fixing plate; 120. Stop block; 200. PLC; 300. Grinding and washing machine A; 310. Grinding and washing machine B; 320. Linear guide rail. DETAILED DESCRIPTION

[0030] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0031] Specific implementation method 1: Please refer to Figure 1-10 The present invention provides a technical solution: an anti-collision device for a liquid crystal substrate glass grinding and washing machine, comprising a detection mechanism, a buffer mechanism and a PLC control system, the detection mechanism comprising a mounting bracket 10, a linear slider 20, a travel switch 30 and a trigger sheet 40, the mounting bracket 10 comprising a trigger sheet bracket 11 and a travel switch bracket 12, the buffer mechanism comprising a mounting base 100, a spring strut 110 and a stop block 120, the mounting base 100 comprising a stop block bracket 101 and a spring strut base 102, the spring strut 110 comprising a spring 1 11, damping rod 112, rubber head 113 and fixing plate 114, the PLC control system includes PLC200, servo motor controller, servo motor and HMI interactive screen; the tail of the travel switch bracket 12 is fixed to the forward direction side of the grinding and washing machine table A300 by screws, and the lower side of the middle section of the travel switch bracket 12 is fixed to the surface of the linear slider 20 by screws, and the tail of the trigger plate bracket 11 is fixed to the backward direction side of the grinding and washing machine table B310 by screws, and the lower side of the middle section of the trigger plate bracket 11 is fixed to the linear slider 20 by screws.

[0032] The detection mechanism includes a mounting bracket 10, a linear slider 20, a travel switch 30, and a trigger piece 40; the mounting bracket 10 includes a trigger piece bracket 11 and a travel switch bracket 12; the tail end of the trigger piece bracket 11 is fixed on the grinding and washing machine table A300, and the lower middle part is fixed on the linear slider 20; the tail end of the travel switch bracket 12 is fixed on the grinding and washing machine table B310, and the lower middle part is fixed on the linear slider 20; there are 4 linear sliders 20, which are installed on the machine table linear guide rail 320 and have the function of moving and guiding; there are two front and rear installed on the travel switch bracket 12; the trigger piece 40 is a stainless steel pick with a curved arc at the front end, which is installed on the trigger piece bracket 11;

[0033] The buffer mechanism includes a mounting base 100, a spring strut 110, and a stopper 120; there are two groups of buffer mechanisms, which are symmetrically arranged on both sides of the machine; the mounting base 100 includes a stopper bracket 101 and a spring strut base 102; the tail end of the stopper bracket 101 is mounted on the grinding machine A300; the spring strut base 102 is mounted on the grinding machine B310; the spring strut includes a spring, a damping rod, a damping head, and a fixing plate; the tail end of the spring strut 110 is mounted on the spring strut base 102, and the head end is placed in the guide of the travel switch bracket 12 to ensure that the spring strut 110 slides along the guide when it is compressed backward; the stopper 120 is mounted on the stopper bracket 101, and the head end is fixed on the travel switch bracket 12;

[0034] The PLC control system includes PLC200, servo motor controller, servo motor, and HMI interactive screen; PLC is used to determine whether the anti-collision emergency program needs to be triggered; the servo motor controller and servo motor have a brake function; the HMI interactive screen has the functions of real-time display of the relative distance between the grinding and washing machine A300 and the grinding and washing machine B310, the travel switch status, and real-time alarm;

[0035] During the grinding and cleaning process of the grinding and cleaning machines A300 and B310, if an unexpected situation occurs in the equipment: equipment failure, program loopholes or human error, the grinding and cleaning machines A300 and B310 cross the safe working distance and enter the anti-collision program trigger range, the trigger piece 40 in the detection component toggles the travel switch 30, and this electrical signal is fed back to the PLC control system, and the system starts the anti-collision emergency program: the motors in the grinding and cleaning machines A300 and B310 are urgently stopped, all grinding and cleaning equipment stops working, and the HMI interactive screen alarms in real time; if the travel switch 30 fails due to a fault, the trigger piece 40 Continue to move forward and toggle the travel switch 30, and the system will also start the anti-collision emergency procedure; if the brakes are not timely or fail, the grinding and washing machine A300 and the grinding and washing machine B310 continue to move forward, then the rubber head 113 in the buffer mechanism will collide with the stop block 120, triggering a controllable collision state, and the spring strut 110 will compress backward to play a buffering role; through the components installed on the two machines and the guide rails, it is determined whether the anti-collision mechanism is triggered. The mechanism is convenient for inspection, maintenance, and repair, and at the same time avoids the collision and interference between the two machines, causing serious equipment failures such as bending and deformation of the machine guide rails, leaving serious trauma to the equipment, and does not affect the subsequent grinding and washing accuracy. At the same time, it avoids the complicated and time-consuming maintenance process, which often requires three to five days of shutdown, causing heavy economic losses;

[0036] When the rubber head 113 impacts the end of the stop block 120, the rubber contact seat 1137 on the rubber head 113 is forced to be squeezed. Since the trigger block 11371 inside the rubber contact seat 1137 is arranged relative to the trigger switch 1135, the trigger block 11371 moves horizontally and resists the trigger switch 1135. The trigger switch 1135 receives the squeezing signal and transmits the signal to the alarm through the wiring harness 1133. The alarm sounds an alarm to remind the staff that an abnormal problem occurs between the grinding and washing machine A300 and the grinding and washing machine B310, prompting the staff to repair the grinding and washing machines as soon as possible. The trigger seat 1132 and the rubber contact seat 1137 are docked and installed, and the rubber contact seat 1137 is screwed and fixed inside the screw-in position 1134 by the screw sleeve 1136 thereon. At this time, there is a distance between the trigger switch 1135 and the trigger block 11371. When the rubber contact seat 1137 is squeezed by force, the trigger block 11371 inside the rubber contact seat 1137 resists the trigger switch 1135, and the trigger switch 1135 activates the alarm to warn the on-site staff.

[0037] Specific implementation method 2: This implementation method is a further limitation of specific implementation method 1. A linear guide rail 320 is installed between the grinding and washing machine station A300 and the grinding and washing machine station B310, and the two sets of linear guide rails 320 are arranged in parallel. At the same time, the size of the linear guide rail 320 is adapted to the size of the linear slider 20, and the linear slider 20 is slidably arranged on the outside of the linear guide rail 320, and the cross-section of the linear slider 20 is a "U" shape.

[0038] Specific implementation method three: This implementation method is a further limitation of specific implementation method one. The trigger plate bracket 11 is arranged in two groups on the end surface of the grinding and washing machine table B310, and the travel switch bracket 12 is arranged in two groups on the end surface of the grinding and washing machine table A300. At the same time, linear sliders 20 are installed at the bottom of the two groups of trigger plate brackets 11 and the two groups of travel switch brackets 12.

[0039] Specific implementation method 4: This implementation method is a further limitation of specific implementation method 1. The detection mechanism and the buffer mechanism are both provided in two sets, and the two sets of detection mechanisms and buffer mechanisms are symmetrically installed on both sides of the grinding and washing machine station A300 and the grinding and washing machine station B310.

[0040] Specific embodiment five: This embodiment is a further limitation of specific embodiment one. The travel switch 30 is a rotary rod travel switch, and the travel switch 30 is provided in two groups and is installed on the end face of the travel switch bracket 12 at the front and rear. At the same time, the travel switch bracket 12 is made of metal material and is arranged in an "I" shape, and trigger plates 40 are installed on both groups of travel switches 30, and the ends of the trigger plates 40 are bent upward.

[0041] Specific embodiment six: This embodiment is a further limitation of specific embodiment one. The damping rod 112 is a cylindrical structure made of stainless steel, and the fixing plate 114 is a rectangular structure made of aluminum alloy. A guide groove is provided directly below the fixing plate 114, and the guide groove is assembled with a guide bar fixed to the top of the trigger plate bracket 11. The stop block 120 is a rectangular structure made of nylon.

[0042] Specific embodiment seven: This embodiment is a further limitation of specific embodiment six, a spring 111 is installed on the outer side of the damping rod 112, and a rubber head 113 is installed on the end of the damping rod 112, the rubber head 113 includes a trigger seat 1132, and a stud 1131 is fixedly installed on the bottom of the trigger seat 1132, and a trigger switch 1135 is installed inside the trigger seat 1132, and a wiring harness 1133 is provided on the trigger switch 1135, and the trigger switch 1135 is electrically connected to the alarm installed on the scrubber through the wiring harness 1133.

[0043] Specific embodiment eight: This embodiment is a further limitation of specific embodiment seven, the stud 1131 is screwed and fixed to the inside of a screw hole opened on one end face of the damping rod 112 away from the spring strut base 102, and a screw position 1134 is opened on the upper side of the circumferential inner wall of the trigger seat 1132, and a screw sleeve 1136 is fixedly installed on the bottom of the rubber contact seat 1137, the screw sleeve 1136 is adapted to the size of the screw position 1134, and the screw sleeve 1136 is screwed inside the screw position 1134.

[0044] Specific embodiment nine: This embodiment is a further limitation of specific embodiment eight, the rubber contact seat 1137 and the trigger seat 1132 are screwed and fixed by means of a screw position 1134 and a screw sleeve 1136, and a trigger block 11371 is installed inside the rubber contact seat 1137, and the trigger block 11371 is cylindrical, and the trigger block 11371 is arranged opposite to the trigger switch 1135.

[0045] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A liquid crystal substrate glass grinding and cleaning machine anti-collision device, characterized in that: The invention comprises a detection mechanism, a buffer mechanism and a PLC control system. The detection mechanism comprises a mounting bracket (10), a linear slider (20), a travel switch (30) and a trigger plate (40). The mounting bracket (10) comprises a trigger plate bracket (11) and a travel switch bracket (12). The buffer mechanism comprises a mounting base (100), a spring support rod (110) and a stop block (120). The mounting base (100) comprises a stop block bracket (101) and a spring support rod base (102). The spring support rod (110) comprises a spring (111), a damping rod (112), The invention relates to a rubber head (113) and a fixing plate (114), wherein the PLC control system comprises a PLC (200), a servo motor controller, a servo motor and an HMI interactive screen; the tail of the travel switch bracket (12) is fixed to the side of the grinding and washing machine platform A (300) in the forward direction by means of screws, and the lower side of the middle section of the travel switch bracket (12) is fixed to the surface of the linear slider (20) by means of screws; the tail of the trigger plate bracket (11) is fixed to the side of the grinding and washing machine platform B (310) in the backward direction by means of screws, and the lower side of the middle section of the trigger plate bracket (11) is fixed to the linear slider (20) by means of screws.

2. The anti-collision device for a liquid crystal substrate glass grinding and washing machine according to claim 1, characterized in that: A linear guide rail (320) is installed between the grinding and washing machine platform A (300) and the grinding and washing machine platform B (310), and the two sets of linear guide rails (320) are arranged in parallel. At the same time, the linear guide rail (320) is adapted to the size of the linear slider (20), and the linear slider (20) is slidably arranged on the outside of the linear guide rail (320), and the cross-section of the linear slider (20) is arranged in a "U" shape.

3. The anti-collision device for a liquid crystal substrate glass grinding and cleaning machine according to claim 1, characterized in that: The trigger plate brackets (11) are arranged in two groups on the end surface of the grinding and washing machine platform B (310), and the travel switch brackets (12) are arranged in two groups on the end surface of the grinding and washing machine platform A (300), and linear sliders (20) are installed at the bottoms of the two groups of trigger plate brackets (11) and the two groups of travel switch brackets (12).

4. The anti-collision device for a liquid crystal substrate glass grinding and washing machine according to claim 1, characterized in that: The detection mechanism and the buffer mechanism are both provided in two sets, and the two sets of the detection mechanism and the buffer mechanism are symmetrically installed on both sides of the grinding and washing machine platform A (300) and the grinding and washing machine platform B (310).

5. The anti-collision device for a liquid crystal substrate glass grinding and cleaning machine according to claim 1, characterized in that: The travel switch (30) is a rotating rod travel switch, and the travel switch (30) is provided in two groups and is installed on the end surface of the travel switch bracket (12) at the front and rear. At the same time, the travel switch bracket (12) is made of metal material and is arranged in an "I" shape. The two groups of travel switches (30) are both installed with a trigger plate (40), and the end of the trigger plate (40) is bent upward.

6. The anti-collision device for a liquid crystal substrate glass grinding and cleaning machine according to claim 1, characterized in that: The damping rod (112) is a cylindrical structure made of stainless steel, and the fixing plate (114) is a rectangular structure made of aluminum alloy. A guide groove is provided directly below the fixing plate (114), and the guide groove is assembled with a guide bar fixedly connected to the top of the trigger plate bracket (11). The stop block (120) is a rectangular structure made of nylon.

7. The anti-collision device for a liquid crystal substrate glass grinding and washing machine according to claim 6, characterized in that: A spring (111) is installed on the outer side of the damping rod (112), and a rubber head (113) is installed on the end of the damping rod (112). The rubber head (113) includes a trigger seat (1132), and a stud (1131) is fixedly installed on the bottom of the trigger seat (1132). At the same time, a trigger switch (1135) is installed inside the trigger seat (1132), and a wiring harness (1133) is arranged on the trigger switch (1135). The trigger switch (1135) is electrically connected to an alarm installed on the scrubber through the wiring harness (1133).

8. The anti-collision device for a liquid crystal substrate glass grinding and cleaning machine according to claim 7, characterized in that: The stud (1131) is screwed and fixed inside a screw hole opened on one end surface of the damping rod (112) away from the spring support rod base (102), and a screw position (1134) is opened on the upper side of the circumferential inner wall of the trigger seat (1132), and a screw sleeve (1136) is fixedly installed on the bottom of the rubber contact seat (1137), the screw sleeve (1136) is matched with the size of the screw position (1134), and the screw sleeve (1136) is screwed inside the screw position (1134).

9. The anti-collision device for a liquid crystal substrate glass grinding and cleaning machine according to claim 8, characterized in that: The rubber contact seat (1137) and the trigger seat (1132) are screwed and fixed via a screw-fitting position (1134) and a screw-fitting sleeve (1136), and a trigger block (11371) is installed inside the rubber contact seat (1137). The trigger block (11371) is cylindrical and is arranged opposite to the trigger switch (1135).

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