CN114873139A

CN114873139A - Automatic control method for cache standing

Info

Publication number: CN114873139A
Application number: CN202210332784.2A
Authority: CN
Inventors: 李红甲; 吴强; 刘颖; 张家栋
Original assignee: Dongguan Aohai Technology Co ltd
Current assignee: Dongguan Aohai Technology Co ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-08-09

Abstract

An automatic control method for cache standing adopts a device which is internally provided with a plurality of jig units for placing jig discs; an inductor is arranged at the inlet end of each jig unit, and a stopper is arranged at the outlet end of each jig unit; setting standing time through a controller; when the jig disc enters a jig unit, the sensor is touched, the controller starts timing and indicates the operation of the air cylinder in the stopper, the piston drives the outlet baffle plate to ascend to close the outlet, and the jig disc cannot be taken out; when the set time is reached, the controller indicates the cylinder piston to descend to drive the outlet baffle plate to descend so as to open the outlet, and the jig disc can be taken out; each jig unit is independently timed, and the opening and closing of the outlet are independently controlled. Not only can mistake proofing, prevent slow-witted, the reliability is high, convenient to use, greatly reduced administrative cost.

Description

Automatic control method for cache standing

Technical Field

The invention relates to an industrially used caching and standing process, in particular to an automatic control method for caching and standing.

Background

In the existing industrial production, some workpieces or products are required to be cached and placed still sometimes. For example, in the processing process of the PCBA board, in order to enhance the reliability of the PCBA board, the elements and the solder dots of the PCBA board are glued and reinforced, and then the next step can be performed after the glue surface layer is dried by air, so as to prevent the operator from being stained with the glue to cause the pollution of other parts of the product. The time for standing is buffered, and is usually more than 20 minutes. After the board is divided in the operation of previous process, the PCBA board uses the tool dish to adorn, directly places on the mesa, and whether the staff judges by oneself that to glue the surface and do not dry admittedly, and this mode is because carry out the judgement turnover by oneself by the manual work, can't guarantee whether the true requirement that stews of its turnover time, and is not intelligent, and not mistake proofing is slow-witted, and the reliability is poor. If a plurality of turnover frames are used for caching and standing turnover, various problems of non-batch processing, increase of the number of defective products, difficulty in counting the number, increase of 5S arrangement marks and the like can be caused when the number of products is too large, and the management cost is very high.

Disclosure of Invention

The invention aims to provide a cache standing automatic control method which can independently control time for each jig unit, is error-proof and fool-proof, saves space and reduces management cost.

In order to solve the technical problem, the invention provides an automatic control method for cache standing, which is characterized in that an automatic cache standing device is adopted, and a plurality of jig units for placing jig discs are arranged in the automatic cache standing device; an inductor is arranged at the inlet end of each jig unit, and a stopper is arranged at the outlet end of each jig unit;

setting standing time through a controller of a control box;

when the jig disc enters one jig unit, the sensor is touched, the controller starts timing after obtaining a signal of the sensor, and simultaneously gives a signal to indicate the operation of the air cylinder in the stopper, the air cylinder piston drives the outlet baffle plate to ascend to close the outlet, and the jig disc cannot be taken out of the jig unit;

when the set time is reached, the controller gives a signal again to indicate the cylinder to operate, the piston drives the outlet baffle plate to descend to open the outlet, and the jig disc can be taken out of the jig unit; meanwhile, the controller instructs the timer of the jig unit to return to zero;

after the jig disc in the jig unit is taken out, a new jig disc is put in the jig unit to start the control;

each jig unit is independently timed, and the opening and closing of the outlet are independently controlled.

When the jig disc enters the jig unit, the jig disc is prevented from withdrawing and can only be inserted inwards.

Each fixture unit is provided with signal lamps in one-to-one correspondence, and each signal lamp is electrically connected with a circuit board in the control box; when the jig plate enters one jig unit, the controller indicates the corresponding signal lamp to light a red light; when the set time is reached, the controller instructs the signal lamp to light green until the jig plate is taken out.

Each jig unit comprises a partition plate for bearing a jig disc, the partition plate main body is a rectangular plate, the left side and the right side of the partition plate main body are connected with the box body, and the rear side of the partition plate main body is turned downwards to form a lower folded edge;

the stopper consists of a cylinder and an outlet baffle; the cylinder is connected with the inner wall of the lower folded edge, and a piston of the cylinder extends downwards; the outlet baffle plate consists of a baffle plate main body in an approximate inverted-V shape and a piston connecting plate which is vertically connected integrally, the baffle plate main body is attached to the outer wall of the lower folded edge, a cylinder piston is vertically connected onto the piston connecting plate and is parallel to the baffle plate main body, and the baffle plate main body closes or opens the outlet of the jig unit when the piston moves upwards or downwards;

and each inductor and each air cylinder are respectively and electrically connected with a circuit board in the control box.

The cylinder of the stopper is fixed on the inner wall of the lower hem by screws; the upper middle part of the baffle main body of the outlet baffle is provided with a rectangular notch for avoiding the screw head to pass through.

A limiter which limits the jig disc to be inserted inwards only and prevents the jig disc from exiting is arranged at the other inner side of the front inlet end of the partition plate, which is opposite to the inductor;

the limiter comprises a connecting shaft, a movable plate and a limiting shaft: the connecting shaft is transversely connected to the side wall of the box body, one end of the movable plate is rotatably hung on the connecting shaft, the other end of the movable plate freely extends into the jig unit, and the limiting shaft is also transversely connected to the side wall of the box body, is positioned below the movable plate and is parallel to the connecting shaft.

The movable plate is provided with a rectangular plate body, two sides of one end of the rectangular plate body are upwards turned to form a U-shaped connecting part, and the connecting shaft can rotatably transversely penetrate through the U-shaped connecting part; the other end of the rectangular plate body is a free end;

the middle part of the rectangular plate body of the movable plate of the limiter is provided with a long through hole, and a vertical guide shaft is sleeved in the long through hole from top to bottom in a clearance manner;

the inductor is a contact inductor and is connected to the side surface of the jig unit through an L-shaped fourth connecting plate, and an induction contact of the inductor obliquely extends downwards to the edge above the rectangular plate to be pressed against the jig plate extending inwards.

The upper folded edges turned upwards on the left side and the right side of the rectangular plate as the partition plate main body are further turned inwards again to form horizontal inner folded edges; and the height limiting plate frame for limiting the height of the jig plate is arranged on the two horizontal inner folding edges.

The inner wall of the box body is provided with a fan, and the fan is electrically connected with a circuit board in the control box; the box body is provided with a plurality of ventilation openings;

the control box is arranged at the top of the box body, and a touch screen convenient for setting standing time is arranged on the control box;

the inside of the box body is divided into a left half and a right half by a partition plate, and the left half and the right half are provided with a left group and a right group, and each group of a plurality of jig units which are arranged in an up-down overlapping way; notches are symmetrically arranged on two sides of the inlet and the outlet of each jig unit so that the jig plate can be accurately placed in a proper position.

Compared with the prior art, each fixture unit can be independently controlled by the automatic cache standing method. Because the inductor is arranged at the inlet of each jig unit to induce the jig disc to be placed in, the limiter is arranged to limit the jig disc to only advance and not retreat, and the stopper is arranged at the outlet to control the cylinder to lift to open and close the outlet of the jig disc. When the set standing time is not reached in one jig unit, the stopper of the jig unit is always closed, the jig cannot be taken out, and when the set standing time is reached, the stopper is automatically opened, so that the jig disc in the unit can be taken out. Therefore, the cache standing time can be completely and independently and automatically controlled, and the method is very reliable in error prevention and fool prevention. More ingenious is, the cylinder of stopper is connected under the baffle on the hem inner wall, and export baffle then superpose the outer wall at hem down, and the cylinder piston is connected perpendicular piston connection board on the export baffle, and export baffle just can go up and down along with cylinder piston reciprocating motion like this to realize opening and closing in tool unit exit, the stopper set up the structure exquisiteness, compactness, the occupation of space is little, low cost, reliability are very high. The workman can insert the tool dish that needs to stew at any time, takes out the rest tool dish that have stew at any time, does not need extra record, differentiation, and degree of automation is very high, greatly reduced administrative cost.

The invention also uses a mechanical method utilizing the gravity principle to limit the jig disc to enter from the inlet only and not to exit from the inlet. The movable plate is rotatably hung at the inlet, when the jig disc is inserted, the movable plate is pushed upwards to push away the jig disc, the jig disc is inserted from the lower part, when the jig disc stops moving, the movable plate falls and returns under the action of gravity, and if the jig disc is pulled out in an attempt to retreat, the movable plate is clamped by the free end of the movable plate and cannot retreat. Only after the outlet baffle of the equal stopper descends, the jig disc can be taken out from the outlet. Simple structure and reliable control.

Drawings

The invention will be described in further detail with reference to the following drawings and detailed description:

fig. 1 is a front perspective outline view of the automatic buffer standing device of the invention.

Fig. 2 is a back perspective external view of the automatic buffer standing device of the invention.

Fig. 3 is a front perspective view of the jig unit of the present invention.

Fig. 4 is a partially enlarged view of a portion a in fig. 3.

Fig. 5 is a perspective view of the fixture unit of the present invention from another angle.

Fig. 6 is a back perspective view of the jig unit of the present invention after the outlet baffle descends.

Fig. 7 is a back perspective view of the jig unit of the present invention after the outlet baffle is raised.

Fig. 8 is a control flow chart of the automatic control method of cache standing according to the present invention.

Detailed Description

As shown in fig. 8, the automatic control method for buffer standing of the present invention employs an automatic buffer standing device 100, which is provided with a plurality of jig units 20 for placing a jig tray 200 therein; an inductor 22 is installed on one side of the inlet end of each jig unit, a limiter 23 is installed on the other side of each jig unit, and a stopper 24 is installed on the outlet end of each jig unit. The box body is provided with a control box, a PLC controller, a circuit board and the like are arranged in the control box, and the control box is provided with a time relay. Signal lamps 40 corresponding to one another are mounted on the box body for each jig unit. Each jig unit is independently timed, and the opening and closing of the outlet are independently controlled. The automatic control method is as follows:

firstly, setting standing time through a PLC (programmable logic controller) of a control box 30;

when the jig plate 200 enters one jig unit 20, the sensor 22 is triggered, the controller starts timing after receiving a signal of the sensor, and simultaneously gives a signal to indicate the operation of the cylinder 241 in the stopper 24, the cylinder piston drives the outlet baffle 242 to rise to close the outlet, and the controller indicates the corresponding signal lamp 40 to light red; the jig unit cannot take out the jig tray; when the jig tray 200 enters the jig unit 20, it is prevented from being withdrawn and inserted only inward.

When the set time is reached, the controller gives a signal again to indicate the cylinder 241 to operate, the piston drives the outlet baffle 242 to descend to open the outlet, and the jig disc can be taken out of the jig unit; meanwhile, the controller instructs the timer of the jig unit to return to zero. The controller also instructs the signal lamp to light green until the jig plate is taken out.

After the jig disc in the jig unit is taken out, a new jig disc is put in and the control cycle is started.

The invention adopts a special device. As shown in fig. 1-2, the automatic caching and standing device 100 adopted by the invention comprises a rectangular box 10, which is formed by connecting a left side wall 11, a right side wall 11, a front side wall 12 and a rear side wall 13, wherein the top of the box is provided with a control box 30, the control box is provided with a touch screen convenient for setting standing time, and four corners of the bottom of the box are provided with rollers with brakes. The front side wall 12 is divided into left and right sides, the middle is a normally open inlet for inserting the jig tray 200 into the jig unit 20, and the rear side wall 13 is also divided into left and right sides, the middle is an outlet for taking out the jig tray 200. As a preferred embodiment, the box 10 is divided into left and right halves by the partition board 14, and two sets of the jig units 20 are installed, wherein each set of the jig units is arranged in an up-and-down stacked manner, or only one set of the jig units is installed, or more sets of the jig units are additionally installed, depending on actual needs. Rectangular notches 15 are symmetrically arranged on two sides of the inlet of the front side wall 12 and the outlet of the rear side wall 13, so that the jig tray 200 can be accurately placed in a proper position, the jig tray 200 is used for loading workpieces or products needing to be cached and placed, the jig tray is placed in the box body and is received by the jig units 20 distributed in a grid shape, one jig tray corresponds to one jig unit, and the jig tray is independently timed and can be independently taken out.

As shown in fig. 3-7, each of the jig units 20 is mainly composed of a partition 21 for receiving the jig tray 200, a sensor 22, a limiter 23, a stopper 24, a height limiting plate 25, and the like.

The main body of the partition board 21 is a rectangular board 211, the left and right sides of the partition board are folded upwards to form upper folded edges 213 to be welded with the box body, the upper folded edges 213 are further folded inwards to form horizontal inner folded edges 214 again, and the rear side of the rectangular board 211 is folded downwards to form lower folded edges 212.

An inductor 22 for inducing the jig disc 200 to enter is arranged on one side surface of the front inlet end of the partition plate 21, a limiter 23 for limiting the jig disc to be inserted inwards but not to retreat is arranged on the other side surface of the front inlet end, and a liftable stopper 24 is arranged at the outlet end of the back surface of the partition plate 21.

The inductor 22 is a contact inductor and is connected to the horizontal inner folded edge 214 on the side surface of the partition board 21 through an L-shaped fourth connecting plate 222, an induction contact 221 of the inductor extends obliquely inwards to the edge above the rectangular board 211 to be contacted with the extended jig tray 200, each inductor 22 is electrically connected with a circuit board in the control box 30, and when the jig tray is inserted and contacts the inductor, the inductor has a signal fed back to a circuit in the control box.

As shown in fig. 3 to 5, the stopper 23 includes a connecting shaft 231, a movable plate 232, a restricting shaft 233, a guide shaft 235, and the like.

As shown in fig. 3-4, the connecting shaft 231 is transversely connected to the box body, and in a specific embodiment, the connecting shaft 231 is connected to the box body 10 through a first L-shaped connecting plate 237 and a second L-shaped connecting plate 238, and the connecting shaft 231 vertically penetrates through the vertical plate of the first connecting plate 237 and transversely protrudes above the partition plate 21; the horizontal plate of the first connecting plate 237 is overlapped with the horizontal plate of the second connecting plate 238 and fixed by screws; the vertical plates of the second connecting plate 238 are screwed to the side walls of the cabinet.

As shown in fig. 4, the movable plate 232 has a rectangular plate body, two sides of one end of which are turned upwards to form a U-shaped connecting portion 2321, and the connecting shaft 231 can rotatably traverse the U-shaped connecting portion, so that the movable plate can be rotatably hung on the connecting shaft 231; the other end of the rectangular plate body is a free end 2322 which freely extends into the jig unit.

A limit shaft 233 parallel to the connection shaft is further provided below the movable plate at a distance from the movable plate, and is transversely connected to the case by being vertically fixed to the vertical plate of the first connection plate 237. The limiting shaft is used for limiting the movable plate below the movable plate, so that the jig plate is prevented from being difficultly inserted due to the fact that the downward rotating angle is too large. The middle part of the movable plate 232 is provided with a long through hole 234; a third connecting plate 236 is connected to a side surface of the case or the jig unit 20, a vertically downward guiding shaft 235 is fixedly sleeved on the third connecting plate, and the guiding shaft 235 is sleeved in the long through hole 234 from top to bottom in a clearance manner. The guide and the limit are realized for the rotation of the movable plate, and the left and right deviation is avoided.

When the jig disc is inserted, the free end 2322 of the movable plate 232 is jacked up by the jig disc and rotates upwards, and the jig disc passes through smoothly; if the jig disc retreats, this free end can block the jig disc and can't retreat, and when the jig disc was marchd towards the export direction, the free end was then unimpeded to the jig disc. The limiter 23 limits the jig tray to move forward and backward.

In order to limit the height of the jig plate 200, a transverse height limiting plate 25 is erected above the two horizontal inner folding edges 214 of the partition plate 21.

In order to ensure sufficient standing, when the set standing time is short, the jig disc needs to be prevented from being taken out of the box body, and when the set standing time is up, the jig disc needs to be automatically opened to allow the jig disc to be taken out of the box body, the invention is provided with a stopper 24 capable of being automatically closed and opened at the outlet of each jig unit. As shown in fig. 6-7, the stopper 24 is composed of a cylinder 241 connected to the inner wall of the lower folded edge 212 and an outlet baffle 242 connected to a piston 2411 of the cylinder, and each cylinder 241 is electrically connected to a circuit board in the control box 30, and receives the instruction from the control box and independently controls the lifting motion of the piston. The cylinder 241 of the stopper is fixed on the inner wall of the lower folded edge 212 by screws, the piston 2411 of the cylinder 241 extends downwards, the outlet baffle 242 is composed of a baffle main body 2422 in an approximate inverted 'n' -shape and a piston connecting plate 2421 which is vertically connected integrally, the baffle main body 2422 is attached to the outer wall of the lower folded edge 212, and the baffle main body 2422 shields the outlet of the jig unit when the piston moves upwards. In order to avoid the screw head of the connecting cylinder from passing through, a rectangular notch 2423 is formed in the upper middle of the baffle main body 2422 of the outlet baffle 242.

A fan (not shown in the figure) is arranged on the inner wall of the box body 10 and is electrically connected with a circuit board in the control box; the box body is provided with a plurality of ventilation openings 111; the front surface of the box body 10 is provided with signal lamps corresponding to each jig unit, and each signal lamp is electrically connected with a circuit board in the control box 30.

The device can be applied to the buffer storage standing after the PCBA board is glued, and can also be applied to other procedures needing the buffer storage standing.

Claims

1. An automatic control method for buffer storage standing is characterized in that an automatic buffer storage standing device 100 is adopted, and a plurality of jig units (20) for placing jig plates (200) are arranged in the automatic buffer storage standing device; an inductor (22) is installed at the inlet end of each jig unit, and a stopper (24) is installed at the outlet end of each jig unit;

setting standing time by a controller of a control box (30);

when the jig disc (200) enters one jig unit (20), the sensor (22) is touched, the controller starts timing after obtaining a signal of the sensor, and simultaneously gives a signal to indicate the operation of the air cylinder (241) in the stopper (24), the air cylinder piston drives the outlet baffle (242) to rise to close the outlet, and the jig unit cannot take out the jig disc;

when the set time is up, the controller gives a signal again to indicate the cylinder (241) to operate, the piston drives the outlet baffle (242) to descend to open the outlet, and the jig disc can be taken out of the jig unit; meanwhile, the controller instructs the timer of the jig unit to return to zero;

2. The automatic control method for cache standing according to claim 1, wherein the jig tray (200) is prevented from being withdrawn and inserted only inward when entering the jig unit (20).

3. The automatic control method for cache standing according to claim 1, wherein each fixture unit is provided with a one-to-one corresponding signal lamp (40), and each signal lamp is electrically connected with a circuit board in the control box (30); when the jig plate enters one jig unit, the controller indicates the corresponding signal lamp to light a red light; when the set time is reached, the controller instructs the signal lamp to light green until the jig plate is taken out.

4. The automatic control method for cache standing according to any one of claims 2 or 3, wherein each jig unit (20) comprises a partition plate (21) for receiving a jig tray, the main body of the partition plate is a rectangular plate (211), the left side and the right side of the partition plate are connected with the box body, and the rear side of the partition plate is folded downwards to form a lower folded edge (212);

the stopper (24) consists of a cylinder (241) and an outlet baffle (242); the cylinder (241) is connected with the inner wall of the lower folding edge (212), and a piston (2411) of the cylinder extends downwards; the outlet baffle plate (242) consists of an approximately inverted-V-shaped baffle plate main body (2422) and an integrally and vertically connected piston connecting plate (2421), the baffle plate main body (2422) is attached to the outer wall of the lower folded edge (212), a cylinder piston (2411) is vertically connected to the piston connecting plate (2421) and is parallel to the baffle plate main body, and the outlet of the jig unit is closed or opened by the baffle plate main body (2422) when the piston moves upwards or downwards;

each inductor (22) and each air cylinder (241) are respectively and electrically connected with a circuit board in the control box (30).

5. The automatic control method for cache standing according to claim 4, wherein the cylinder (241) of the stopper is fixed on the inner wall of the lower hem (212) by screws; and a rectangular notch (2423) for allowing an avoiding screw head to pass through is reserved in the upper middle of the baffle main body (2422) of the outlet baffle (242).

6. The automatic control method for cache standing according to claim 4, characterized in that a limiter (23) for limiting the jig disc to be inserted only inwards and preventing the jig disc from exiting is arranged at the other inner side of the front inlet end of the partition plate (21) opposite to the inductor (22);

the limiter (23) comprises a connecting shaft (231), a movable plate (232) and a limiting shaft (233): the connecting shaft 231 is transversely connected to the side wall of the box body, one end of the movable plate (232) is rotatably hung on the connecting shaft, the other end of the movable plate freely extends into the jig unit, and the limiting shaft (233) is also transversely connected to the side wall of the box body, is positioned below the movable plate and is parallel to the connecting shaft.

7. The automatic control method for cache standing according to claim 6, wherein the movable plate (232) has a rectangular plate body, one end of which is turned upwards at both sides to form a U-shaped connection part, and the connecting shaft (231) rotatably traverses the U-shaped connection part; the other end of the rectangular plate body is a free end;

the middle part of the rectangular plate body of the movable plate (232) of the limiter is provided with a long through hole (234), and a vertical guide shaft (235) is sleeved in the long through hole (234) from top to bottom in a clearance mode.

8. The automatic control method for cache standing according to claim 4, wherein the sensor (22) is a contact sensor, and is connected to the side of the fixture unit (20) through an L-shaped fourth connecting plate (222), and the sensing contact (221) thereof obliquely extends inwards to the edge above the rectangular plate (211) for the contact of the fixture disk (200) extending inwards.

9. The automatic control method for cache standing according to claim 4, wherein the partition (21) main body, namely the upper folded edge (213) which is folded upwards at the left and right sides of the rectangular plate (211), is further folded inwards again to form a horizontal inner folded edge (214); a height limiting plate (25) for limiting the height of the jig disc (200) is erected on the two horizontal inner folding edges (214).

10. The automatic control method for cache standing according to claim 4, wherein a fan is arranged on the inner wall of the box body (10), and the fan is electrically connected with a circuit board in the control box; a plurality of ventilation openings (111) are formed in the box body;

the control box (30) is arranged at the top of the box body, and a touch screen convenient for setting standing time is arranged on the control box;

the box body (10) is divided into a left half and a right half by a partition plate (14), and is provided with a left group and a right group, wherein each group is provided with a plurality of jig units (20) which are arranged in an up-down overlapping manner; notches (15) are symmetrically arranged on the two sides of the inlet and the outlet of each jig unit (20) so that the jig disc can be accurately placed in a proper position.