Semi-automatic gluing system and gluing surface thickness measurement control method

Abstract

A semi-automatic gluing system comprises a PLC (Programmable Logic Controller), an electric linear sliding table, a motor reducing mechanism, a rack, an electric proportional valve, an electric glue solution pump, a glue solution box, a power supply module, a depth and height detection mechanism, a trowelling mechanism, a gluing mechanism and a control and detection circuit, the gluing mechanism comprises a fixed seat, a motor reducing mechanism A, a lead screw, a linear bearing and a gluing head which are mounted together, the height detection mechanism comprises a guide shell, a pressure sensor, a spring, a supporting rod and a rotating pipe which are mounted together, and the depth detection mechanism comprises a guide pipe, a pressure resistor, a spring and a movable rod which are mounted together. And the control circuit and the detection circuit are arranged in the electric cabinet. The invention discloses a gluing surface thickness measurement control method of a semi-automatic gluing system. The method comprises five steps. According to the invention, the lower end of the gluing head and a gluing part can be ensured to be at a proper constant height, the gluing part is at a levelness, glue liquid after gluing can be flattened, and the gluing quality and the gluing speed are improved.

Description

Technical Field

[0001] The invention relates to the field of glue coating equipment and application technology, in particular to a semi-automatic glue coating system and a glue coating surface thickness measurement and control method. Background Art

[0002] In industrial production, in order to achieve the sealing of the depressions at the joints of two components, it is necessary to use a glue gun to apply glue to the corresponding positions (for example, the depressions at the two joints of the wing skin of an aircraft need to be sealed with glue, and the upper end of the engine box and the box cover of a vehicle engine need to be sealed with glue, etc.).

[0003] In the prior art, for production sites where the workload of gluing is not large, workers generally hold glue guns and manually apply glue to the corresponding positions of the components. The above-mentioned gluing mode will bring inconvenience to workers and increase labor intensity when gluing batch products and the gluing range is large, which is correspondingly not conducive to improving work efficiency. At present, for sites with a large gluing range and continuous production, electric glue pumps are generally used for gluing. Specifically, the glue pump drives the glue to automatically flow out from the lower end of the gluing head to the gluing station (the worker controls the opening and closing of the solenoid valve through the power switch, and can control the glue to flow out or stop flowing out). The electric gluing method does not require workers to manually squeeze the glue packaging bag, etc., which brings convenience to the workers to a certain extent and correspondingly improves work efficiency. However, the amount of glue applied by the above two methods cannot be adaptively controlled. That is to say, when the depth of the depression at the gluing station becomes deeper or shallower, the staff will need to increase or decrease the gluing time accordingly, which has an adverse effect on the precise control of the amount of gluing. Especially when the staff are not familiar with the skills, there is a high probability that the related parts will be glued at the same station continuously, the amount of glue applied will be too much or too little, affecting the quality of gluing (too much glue needs to be cleaned up, and too little glue needs to be re-applied, which also affects work efficiency). In addition, after the gluing is completed, both methods require the staff to manually smooth the surface of the glue with tools, which also increases the labor intensity of the staff. Summary of the invention

[0004] In order to overcome the disadvantages of existing manual and electric gluing methods as described in the background due to technical limitations, the present invention provides a semi-automatic gluing system and a method for measuring and controlling the thickness of the glued surface, which is mainly used for gluing operations at corresponding positions of components with a certain flatness, continuous length and straightness. When working, it can automatically drive the gluing head to move horizontally or vertically to perform gluing operations on relevant parts of the components, and can detect data such as the height of the working surface and the depth of the gluing part in real time, and can adaptively adjust the height of the gluing head and the flow rate of the glue liquid to ensure that the lower end of the gluing head and the gluing part are at a suitable constant height, and all the gluing parts are at the same level. It can also synchronously smooth the glue liquid after gluing, thereby bringing convenience to the staff and correspondingly improving the gluing quality and gluing work efficiency.

[0005] The technical solution adopted by the present invention to solve its technical problem is: A semi-automatic gluing system, comprising a PLC, an electric linear slide, a motor reduction mechanism, a frame, an electric proportional valve, an electric glue pump, and a glue tank, characterized in that it also has a depth detection mechanism, a height detection mechanism, a smoothing mechanism, a glue mechanism, a control circuit, and a detection circuit; the electric linear slide has multiple sets, two of which are longitudinally installed on both sides of the upper end of the frame, the shell of the third electric linear slide is transversely installed on the lower ends of the sliding blocks of two of the electric linear slides, and the upper end of the motor reduction mechanism is installed on the lower end of the sliding block of the third electric linear slide; the glue mechanism comprises a fixed seat, a motor A reduction mechanism A, a lead screw, a linear bearing, a gluing head, and an isolation plate are installed in the fixed seat. The motor reduction mechanism A is installed on the isolation plate and the rotating shaft is located at the lower end of the isolation plate; the bearing rods of the linear bearing are respectively installed between the lower end of the isolation plate and the lower inner part of the fixed seat, the rear end of the gluing head is installed on the front end of the sliding block of the linear bearing, and the lower end of the gluing head is located outside the lower end of the fixed seat, and the rotating shaft of the motor reduction mechanism is installed outside the upper end of the fixed seat; a wire tube is installed on the side end of the sliding block of the linear bearing, the lead screw is installed together with the wire tube through a thread, the upper end of the lead screw and the lower end of the rotating shaft of the motor reduction mechanism A are installed together, and the lower end of the lead screw is rotatably installed in the fixed seat The lower end side; the upper end of the glue head is connected to the liquid outlet pipe of the electric proportional valve, the liquid inlet pipe of the electric proportional valve is connected to the liquid outlet end of the glue pump, and the liquid inlet end of the glue pump is connected to the lower liquid outlet of the glue tank; the height detection mechanism includes a guide shell, a pressure sensor, a spring, a support rod, and a rotating tube. The pressure sensor is installed at the upper end of the guide shell, the upper end of the spring is installed at the lower end of the pressure sensor, the upper end of the support rod is installed at the lower end of the spring, the lower end of the support rod and the rotating tube are rotatably installed together, and the upper end of the guide shell is installed at the outer lower part of one side of the fixed seat; the depth detection mechanism includes a guide tube, a pressure resistor, a spring, and a movable rod. The pressure resistor is installed It is installed at the upper end of the guide tube, a limit block is installed at the upper end of the movable rod, the spring and the limit block are located in the guide tube, a connecting rod is installed at the side end of the guide shell, and the side end of the connecting rod is installed at the upper end of the guide tube; the smoothing mechanism is installed at the lower part of the other side of the fixed seat, the control circuit and the detection circuit are installed in the electric control box, the signal output end of the pressure sensor is electrically connected to the signal input end of the control circuit, the power output end of the control circuit is electrically connected to the power input end of the motor reduction mechanism A, the two wiring terminals of the pressure resistor are electrically connected in series between the two signal input ends of the detection circuit, and the signal output end of the detection circuit is electrically connected to the signal input end of the electric proportional valve.

[0006] Furthermore, the glue pump is a peristaltic pump.

[0007] Furthermore, the lower end of the movable rod is a circular structure and the outer diameter is smaller than the width of the gluing station groove.

[0008] Furthermore, the height of the lower end of the movable rod is lower than the height of the lower end of the rotating tube, and the heights of the lower ends of the movable rod and the rotating tube are lower than the height of the lower end of the glue spraying head.

[0009] Furthermore, the control circuit has two paths, each control circuit includes an electrically connected adjustable resistor and resistor, a transistor and a relay, the positive power input terminal of the relay is connected to the positive control power input terminal, one end of the adjustable resistor is connected to one end of the resistor and the base of the transistor, the collector of the transistor is connected to the negative power input terminal of the relay, and the emitter of the transistor is connected to the negative control power input terminal of the relay.

[0010] Furthermore, the smoothing mechanism includes a fixed bin, an electric heating plate and a scraper. The electric heating plate is installed at the upper end of the fixed bin. The side end of the fixed bin is provided with fixing bolts. The upper end of the scraper is movably sleeved on the lower end of the fixed bin and is tightened and fixed by bolts. The height of the lower end of the scraper is lower than the height of the gluing head and higher than the height of the lower end of the rotating tube.

[0011] A method for measuring and controlling the thickness of a glued surface of a semi-automatic glue coating system, characterized in that it includes the following steps: S1: placing the glued part of a component to be glued longitudinally or transversely at the lower end of a glue coating head; S2: PLC controls the glue coating mechanism to move left and right or forward and backward to perform glue coating on the glued part of the component, and the glue pump is powered to work to extract the glue in the glue tank and output it to the glued part of the component through the glue coating head; S3: a depth detection mechanism monitors the depth of the glue coating position, and when the depth is deep and the voltage signal output to the electric proportional valve is high, the glued part enters the glue coating through the glue coating head. The amount of glue in the gluing area increases. When the depth is shallow, the voltage signal output to the electric proportional valve is low, and the amount of glue entering the gluing area through the gluing head becomes smaller; S4: The height detection mechanism monitors the height difference between the gluing head and the gluing area. When the distance between the lower end of the gluing head and the upper end of the gluing area is large, the motor reduction mechanism A controls the gluing head to descend. When the distance between the lower end of the gluing head and the upper end of the gluing area is small, the motor reducer A controls the gluing head to rise; S5: The scraper plate of the smoothing mechanism smoothes the glue at the gluing station of the component under the heating action of the electric heating plate.

[0012] Furthermore, in step S3, all gluing stations of the component can be at the same height after gluing.

[0013] Furthermore, in step S4, the lower end of the gluing head and the gluing position can be kept at a constant height.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the present invention is mainly used for gluing operations at corresponding positions of components with certain flatness, continuous length and straightness (such as gluing and sealing at the concave joints of the wing skin of an aircraft). During operation, the electric linear slide can automatically drive the gluing head to move horizontally or vertically to perform gluing operations on the relevant parts of the components, and the depth detection mechanism and detection circuit, height detection mechanism and control circuit can detect the depth of the gluing part, the height between the working surface and the lower end of the gluing head and other data in real time, and adaptively adjust the height of the gluing head and the flow rate of the glue liquid to ensure that the lower end of the gluing head and the gluing part are at a suitable constant height, and all the gluing parts are at the same level (the greater the depth, the more glue liquid in a corresponding position, and vice versa, the less glue liquid), and the glue liquid after gluing can be synchronously smoothed by the smoothing mechanism. The present invention brings convenience to the staff and correspondingly improves the gluing quality and gluing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 , 3 4 is a schematic diagram of the local structure of the present invention.

[0018] Figure 5 It is a photograph of the local structure of the invention. DETAILED DESCRIPTION

[0019] Figure 1 , 2As shown in Figures 3, 4 and 5, a semi-automatic gluing system includes a PLC, an electric linear slide, a motor reduction mechanism M3, a frame 1, a power switch SK, an electric proportional valve T2, an electric glue pump (not shown in the figure), a glue tank (not shown in the figure), and a power module T1. It also has a depth detection mechanism, a height detection mechanism, a leveling mechanism, a gluing mechanism, a control circuit 3, and a detection circuit 4; there are three sets of electric linear slides, two of which are longitudinally distributed and the upper ends of their shells are respectively installed on the left and right sides of the upper end of the frame (not shown in the figure), and the upper ends of the shells of the third set of electric linear slides M4 are respectively installed on the lower ends of the sliding blocks of two of the electric linear slides M2 by bolts. The upper end of the housing of the reduction mechanism M3 is installed at the lower end of the sliding block of the third electric linear slide M4; the gluing mechanism includes a "]"-shaped fixed seat 51, a motor reduction mechanism AM1, a lead screw 52, ​​a linear bearing 53, and a "┌"-shaped gluing head 54. An isolation plate 55 is welded in the middle of the fixed seat, and there is an opening in the middle of the right side of the isolation plate 55. The motor reduction mechanism AM1 is vertically distributed and installed on the isolation plate 55, and the rotating shaft is located at the lower end of the isolation plate 55 through the opening (the inner diameter of the opening is larger than the outer diameter of the rotating shaft); the upper and lower sides of the bearing rod 531 of the linear bearing 53 are respectively welded between the lower end of the isolation plate 55 and the lower inner middle part of the fixed seat 51, and there is an opening A in the lower middle of the fixed seat 51 at the front end of the linear bearing 53. The gluing head 54 The middle of the rear outer end is welded to the front side end of the sliding block 532 of the linear bearing 53, and the lower end of the glue head 54 is led downward through the opening A to the outside of the lower end of the fixed seat 51; a wire tube 533 is welded to the middle of the right end of the sliding block 532 of the linear bearing, and the middle of the screw rod 52 is installed together with the wire tube 533 through a thread, and the upper end of the screw rod 52 and the lower end of the rotating shaft of the motor reduction mechanism AM1 are welded together, and a bearing seat 534 is installed on the right side of the linear bearing 53 and in the middle of the lower end of the fixed seat, and the lower end of the screw rod 52 is tightly sleeved in the inner ring of the bearing of the bearing seat 534; the right end of the glue head 54 is connected to the liquid outlet pipe of the electric proportional valve T2 through a pipeline, and the liquid inlet pipe of the electric proportional valve T2 and the liquid outlet end of the glue pump are connected through a pipeline. The liquid inlet end of the glue pump and the lower liquid outlet of the glue tank are connected by a pipeline, and the lower end of the rotating shaft of the motor reduction mechanism M3 is welded to the middle of the upper end of the fixed seat; the height detection mechanism includes a guide shell 61, a pressure sensor T3, a spring 62, a support rod 63, and a rotating tube 64. The lower end of the guide shell 61 is an open structure, and the pressure sensor T3 is installed in the middle of the upper end of the guide shell 61 by bolts. The upper ends of the two springs 62 are respectively installed in the front and rear parts of the pressure sensor T3 force surface, and the upper ends of the two support rods 63 are respectively welded to the lower ends of the two springs 62. The lower ends of the two support rods 63 and the front and rear sides of the rotating tube 64 are rotatably installed together, and the upper end of the guide shell 61 is longitudinally distributed front and back and installed at the lower part of the left outer end of the fixed seat 51;The depth detection mechanism includes a guide tube 71, a pressure resistor RT, a spring A72, and a movable rod 73. The lower end of the guide tube 71 has a guide hole. The pressure resistor RT is insulated and installed in the upper end of the guide tube 71 with the force-bearing surface facing the lower end. A limit block 74 with an outer diameter larger than the inner diameter of the guide hole is welded on the upper end of the movable rod 73. The spring 72 and the limit block 74 are located in the guide tube 71 from top to bottom. A connecting rod is welded in the middle of the left end of the guide shell 61, and the left end of the connecting rod is welded to the upper end of the guide tube 71; the smoothing mechanism is installed on the lower right side of the fixing seat 51, and the power module T1 and the power switch, the control circuit 3, and the detection circuit 4 are installed in the electric control box 8. ;

[0020] Figure 1 , 2 As shown in , 3, 4, and 5, the glue pump is a peristaltic pump. The lower end of the movable rod 73 is a circular structure and the outer diameter is smaller than the width of the glue station groove (not shown in the figure). The lower end height of the movable rod 73 is lower than the lower end height of the rotating tube 64, and the lower end heights of the movable rod 73 and the rotating tube 64 are lower than the lower end height of the glue head 54. There are two control circuits. The first control circuit includes an adjustable resistor R1 and a resistor R2, a transistor Q1, and a relay J1 connected by circuit board wiring. The positive power input end of the relay J1 is connected to the positive control power input end, one end of the adjustable resistor R1 is connected to one end of the resistor R2 and the base of the transistor Q1, the collector of the transistor Q1 is connected to the negative power input end of the relay J1, and the emitter of the transistor Q1 is connected to the negative control power input end of the relay J1 and the other end of the resistor R2. The second control circuit includes an adjustable resistor R3 and a resistor R4, a transistor Q and a relay J connected by circuit board wiring, the positive power input end of the relay J is connected to the positive control power input end, one end of the adjustable resistor R3 is connected to one end of the resistor R4 and the base of the transistor Q, the collector of the transistor Q is connected to the negative power input end of the relay J, and the emitter of the transistor Q is connected to the negative control power input end of the relay J and the other end of the resistor R4. The detection circuit is an adjustable resistor R5, one end of the adjustable resistor R5 is connected to one end of the pressure resistor RT. The smoothing mechanism includes a fixed bin 91, an electric heating plate RD and a scraper 92. The electric heating plate RD is installed at the upper end of the fixed bin 91. There is a screw hole in the middle of the right end of the fixed bin 91. A bolt 93 is threadedly installed in the screw hole. The upper end of the scraper 92 is movably sleeved on the lower end of the fixed bin 91 and is tightened and fixed by the bolt 93 (the scraper 92 can be adjusted up or down in height so that the lower end of the scraper can smooth the glue at the gluing station). The height of the lower end of the scraper 92 is lower than the height of the gluing head 54 and slightly higher than the height of the lower end of the rotating tube 64.

[0021] Figure 1 , 2As shown in , 3, 4, and 5, the power input terminals 1 and 2 of the power module T1 are connected to the two poles of the AC 220V power supply through wires, the power output terminals 3 and 4 of the power module T1 are connected to the power input terminals 1 and 2 of the PLC, the positive power input terminals of the relays J1 and J of the control circuit, and the emitters of the transistors Q and Q1, the power input terminals 1 and 2 of the pressure sensor T3, the other end of the adjustable resistor R5 of the detection circuit, and the other end of the pressure resistor RT, the power input terminal of the electric heating plate RD of the smoothing mechanism, and the power input terminals 1 and 2 of the electric proportional valve T2 are connected through wires. The power output terminals 3, 4, 5, and 6 of the PLC are connected to the power input terminals of the two sets of electric linear slides M2 and the electric linear slide M4 through wires. The signal output terminal of the pressure sensor T3 and the other end of the adjustable resistors R1 and R3 of the signal input terminal of the control circuit are connected through wires. The two normally open contact terminals of the relay J at the power output end of the control circuit, the two normally closed contact terminals of the relay J1, and the positive and negative and negative and positive and negative power input terminals of the motor reduction mechanism AM1 are connected via wires. The two terminals of the pressure resistor RT are connected in series between one end of the adjustable resistor R5 and the negative power output terminal of the power module T1. The signal output terminal of the detection circuit, the other end of the adjustable resistor R5, is connected to the signal input terminal 3 of the electric proportional valve T2 via wires, and the power input terminal of the motor reduction mechanism M3 is connected in series with the power switch SK and the two poles of the AC 220V power supply via wires.The power module T1 is a finished product of an AC 220V to DC 24V switching power module; the electric lead screw slides M2 and M4 are finished products of long-stroke electric lead screw slides with a power of 300W; the motor reduction mechanism M3 is a coaxial motor gear reducer with a power of 100W; the motor reduction mechanism AM1 is a coaxial motor gear reducer with a power of 50W; the transistors Q and Q1 are NPN transistors of model 9013; the resistance values ​​of resistors R2 and R4 are 10K; the resistance values ​​of adjustable resistors R1, R3, and R5 are 470K (in this embodiment, they are adjusted to 50K, 48K, and 12K respectively; when the resistance values ​​of the adjustable resistors R1 and R3 are adjusted to be relatively large, the partial pressure is large, and when the subsequent spacing between the glue heads and the working surfaces is relatively smaller, the transistors Q and Q1 will be turned on, that is, the height threshold of the glue hose is set relatively small; the resistance values ​​of the adjustable resistors R1 and R3 are When it is adjusted to a relatively small value, its partial pressure is small. When the subsequent spacing between the glue heads and the working surface is relatively larger, the transistors Q and Q1 will be turned on, that is, the height threshold of the glue hose is set relatively large); the relay J and J1 models are DC24V; the electric heating plate RD is a 50W PTC constant temperature electric heating plate finished product (after heating, the scraper can improve the fluidity of the glue liquid and is more conducive to scraping the glue liquid); the pressure sensor T3 is a small pressure sensor finished product of model F5Y-500N, which has two power input terminals and a signal output terminal. When the detected pressure is large, the output voltage signal is high, otherwise the output voltage signal is low; the electric proportional valve T2 is a small electric actuator valve of model STQ-05, which has two power input terminals and a signal input terminal. The higher the input signal voltage, the greater the valve core opening degree, and vice versa.

[0022] Figure 1 , 2As shown in Figures 3, 4, and 5, the present invention is mainly used for gluing operations at corresponding positions of components with certain flatness, continuous length, and straightness (such as gluing and sealing at the concave joints of the wing skin of an aircraft). Specifically, it includes the following steps. (1) After the power module T1 is powered, its 3 and 4 pins output a stable DC 24V power supply to enter the power input end of the control circuit, the detection circuit, the electric proportional valve, the pressure sensor T3, etc. (2) The staff places the gluing part of the component to be glued vertically or horizontally at the lower end of the gluing head 54, and the lower end of the gluing head 54 is located in the middle of the upper end of the gluing part; specifically, the staff turns on the power switch SK according to the needs, and after the motor reduction mechanism M3 is powered and works, its rotating shaft will drive the fixed seat 51 and the gluing head 54 to rotate, so that the lower end of the gluing head 54 rotates a certain angle in the circumferential direction just to be located at the upper end of the gluing station (to avoid excessive movement of the position of the component). (3) After the glue pump is powered on, the glue in the glue tank is pumped out and then output through the lower end of the glue head 54 into the gluing position of the component. The PLC controls the sliding block of the third electric slide M4 according to internal instructions to drive the glue head to perform gluing operations on the gluing part of the component from left to right, or controls the first and second electric slides M2 to perform gluing operations on the gluing part of the component from front to back. (4) After the depth detection mechanism is powered on, the lower end of the movable rod 73 will change in height up and down as the depth of the glue application area changes. When the depth of the glue application area is relatively large, the upward movement spacing of the movable rod 73 is relatively small, and the pressure on the force-bearing surface of the pressure resistor RT through the limit block 74 compression spring A72 is relatively small. The resistance value of the pressure resistor RT is relatively high and the pressure difference between the adjustable resistor R5 is relatively large. In this way, the signal at the signal input end of the electric proportional valve T2 is relatively large, the valve core of the electric proportional valve T2 is relatively open, and the amount of glue output by the glue pump entering the glue application station after throttling by the valve core of the electric proportional valve T2 is relatively large; when the depth of the glue application area is relatively small and the movable rod 73 is relatively small, the pressure on the force-bearing surface of the pressure resistor RT through the limit block 74 compression spring A72 is relatively small. The resistance value of the pressure resistor RT is relatively high and the pressure difference between the adjustable resistor R5 is relatively large. In this way, the signal at the signal input end of the electric proportional valve T2 is relatively large, the valve core of the electric proportional valve T2 is relatively open, and the amount of glue output by the glue pump entering the glue application station after throttling by the valve core of the electric proportional valve T2 is relatively large. The upward movement spacing of the movable rod 73 is relatively large, the pressure of the force-bearing surface of the pressure resistor RT acted on by the compression spring A72 through the limit block 74 is relatively large, the resistance value of the pressure resistor RT is relatively low and the voltage division between the adjustable resistor R5 is relatively small, so that the signal entering the signal input end of the electric proportional valve T2 is relatively small, the valve core opening degree of the electric proportional valve T2 is relatively small, and the amount of glue output by the glue pump entering the gluing station after throttling by the valve core of the electric proportional valve T2 is relatively small; through the above, the present invention can detect the depth data of the gluing part in real time, and adaptively adjust the flow rate of the glue of the glue head to ensure the amount of glue entering the gluing part, and all the gluing working surfaces of the subsequent components are in the same plane.(5) After the height detection mechanism is powered on, the lower end of the rotating tube 64 rotates to contact the two sides of the gluing station groove. When the height of the two sides of the gluing station is high, the force acting on the force surface of the pressure sensor T3 through the spring 62 and the support rod 63 during the rotation of the rotating tube 64 is relatively large, and the reverse force is relatively small; when the height of the two sides of the gluing station is relatively appropriate, the voltage signal output by the 3rd pin of the pressure sensor T3 is relatively low. The voltage signal is divided by the adjustable resistor R3 and the resistor R4 and enters the base voltage of the transistor Q. The voltage is relatively low (lower than 0.7V), the transistor Q cut-off relay J will not be energized and attracted, and the motor reduction mechanism AM1 will not be energized, so the gluing head 54 will not rise in height; when the height of the two sides of the gluing station is relatively high, the voltage signal output by the 3rd pin of the pressure sensor T3 is relatively high. The voltage signal is divided by the adjustable resistor R3 and the resistor R4 and enters the base voltage of the transistor Q. The voltage is relatively high (higher than 0.7 V), the transistor Q is turned on and the collector outputs a low level which enters the negative power input terminal of the relay J. The relay J will be energized to attract and close its control power input terminal and the normally open contact terminal, and then, the positive and negative power input terminals of the motor reduction mechanism AM1 will be energized, and its rotating shaft drives the screw 52 to rotate clockwise, and the external thread of the screw acts on the internal thread of the wire tube 533, and the wire tube 533 drives the sliding block of the linear bearing and the gluing head 564 to rise in height; when the heights on both sides of the gluing station are relatively appropriate again, the voltage signal output by the 3rd pin of the pressure sensor T3 is relatively low again, the relay J is no longer attracted, and the gluing head maintains the current appropriate height; through the above, the present invention can automatically adjust the height of the high gluing head when the heights on both sides of the gluing station are relatively high, so as to prevent the height of the gluing head from being too low and affecting the gluing work (the spacing is too low, which will cause the lower part of the gluing head to collide with the gluing position, etc., and the actual spacing between the gluing stations is about 3 cm).(6) After the height detection mechanism is powered on, when the heights of both sides of the glue spraying station are relatively appropriate, the voltage signal output from the 3rd pin of the pressure sensor T3 is divided by the adjustable resistors R1 and R2 and enters the base voltage of the transistor Q1, which is relatively high (higher than 0.7V). The collector of the transistor Q1 is turned on and outputs a low level and enters the negative power input terminal of the relay J1. The relay J1 is powered on and its control power input terminal and the normally closed contact terminal are open. The motor reduction mechanism AM1 will not be powered, and the glue spraying head 54 will not drop in height. When the heights of both sides of the glue spraying station are relatively low, the voltage signal output from the 3rd pin of the pressure sensor T3 is divided by the adjustable resistors R1 and R2 and enters the base voltage of the transistor Q1, which is relatively low (lower than 0.7V). The collector of the transistor Q1 is turned off and no longer outputs a low level and enters the negative power input terminal of the relay J1. The relay J 1 loses power and no longer attracts its control power input terminal and normally closed contact terminal to close, and then, the negative and positive power input terminals of the motor reduction mechanism AM1 are energized, and its shaft drives the screw rod 52 to rotate counterclockwise, and the external thread of the screw rod acts on the internal thread of the wire tube 533, and the wire tube 533 drives the sliding block of the linear bearing and the gluing head 564 to decrease in height; when the heights on both sides of the gluing station are relatively appropriate again, the voltage signal output by the 3rd pin of the pressure sensor T3 is relatively high again, and the relay J1 is energized and attracted again, and the gluing head maintains the current appropriate height; through the above, the present invention can automatically adjust the height of the gluing head when the heights on both sides of the gluing station are relatively low, so as to prevent the height of the gluing head from being too high and affecting the gluing work (too large a spacing will cause the glue liquid output from the lower part of the gluing head to fail to effectively enter the gluing position, and the actual spacing between the gluing stations is about 2.9 cm). (7) After the smoothing mechanism is powered on, the electric heating plate RT is electrically heated. In this way, when the glue head is in motion, the lower end of the scraper 92 heated by the electric heating plate RT will effectively smooth the glue. After the glue is applied, the staff turns off the power of the glue pump, and the PLC controls the electric linear slide M4 or M2 to drive the glue head from left to right or from back to front to return to the dead point, so as to prepare for the next component. The present invention brings convenience to the staff and correspondingly improves the glue application quality and efficiency.

[0023] Those skilled in the art should understand that although the present specification is described in accordance with the implementation methods, the implementation methods do not only include an independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art. Therefore, the scope of protection of this application is defined by the claims.

Claims

1. A semi-automatic glue coating system, including PLC, electric linear slide, motor reduction mechanism, frame, electric proportional valve, electric glue pump, glue tank, characterized in that: It also has a depth detection mechanism, a height detection mechanism, a leveling mechanism, a gluing mechanism, a control circuit, and a detection circuit; there are multiple sets of electric linear slides, two of which are longitudinally distributed and installed on both sides of the upper end of the frame, and the shell of the third set of electric linear slides is transversely distributed and installed on the lower ends of the sliding blocks of two of the electric linear slides, and the upper end of the motor reduction mechanism is installed on the lower end of the sliding block of the third set of electric linear slides; the gluing mechanism includes a fixed seat, a motor reduction mechanism A, a lead screw, a linear bearing, and a gluing head. An isolation plate is installed in the fixed seat, and the motor reduction mechanism A is installed on the isolation The plate and the rotating shaft are located at the lower end of the isolation plate; the bearing rods of the linear bearing are respectively installed between the lower end of the isolation plate and the lower inner part of the fixed seat, the rear side end of the gluing head is installed at the front side end of the sliding block of the linear bearing, and the lower end of the gluing head is located outside the lower end of the fixed seat, and the rotating shaft of the motor reduction mechanism is installed outside the upper end of the fixed seat; the sliding block side end of the linear bearing is installed with a wire tube, the screw rod is installed together with the wire tube through the thread, the upper end of the screw rod and the lower end of the rotating shaft of the motor reduction mechanism A are installed together, and the lower end of the screw rod is rotatably installed on the side of the lower end of the fixed seat; the upper end of the gluing head is connected to the liquid outlet pipe of the electric proportional valve, and the electric The liquid inlet pipe of the proportional valve is connected to the liquid outlet end of the glue pump, and the liquid inlet end of the glue pump is connected to the liquid outlet at the lower end of the glue tank; the height detection mechanism includes a guide shell, a pressure sensor, a spring, a support rod, and a rotating tube. The pressure sensor is installed at the upper end of the guide shell, the upper end of the spring is installed at the lower end of the pressure sensor, the upper end of the support rod is installed at the lower end of the spring, the lower end of the support rod and the rotating tube are rotatably installed together, and the upper end of the guide shell is installed at the outer lower part of one side of the fixed seat; the depth detection mechanism includes a guide tube, a pressure resistor, a spring, and a movable rod. The pressure resistor is installed at the upper end of the guide tube, and the upper end of the movable rod is installed at the lower end of the guide tube. A limit block is installed, and the spring and the limit block are located in the guide tube. A connecting rod is installed on the side end of the guide shell, and the side end of the connecting rod is installed on the upper end of the guide tube; the smoothing mechanism is installed on the lower part of the other side of the fixed seat, and the control circuit and the detection circuit are installed in the electric control box. The signal output end of the pressure sensor is electrically connected to the signal input end of the control circuit, the power output end of the control circuit is electrically connected to the power input end of the motor reduction mechanism A, the two wiring terminals of the pressure resistor are electrically connected in series between the two signal input ends of the detection circuit, and the signal output end of the detection circuit is electrically connected to the signal input end of the electric proportional valve.

2. A semi-automatic gluing system according to claim 1, characterized in that: The glue pump is a peristaltic pump.

3. A semi-automatic gluing system according to claim 1, characterized in that: The lower end of the movable rod is a circular structure and the outer diameter thereof is smaller than the width of the groove of the gluing station.

4. A semi-automatic gluing system according to claim 1, characterized in that: The height of the lower end of the movable rod is lower than the height of the lower end of the rotating tube, and the heights of the lower ends of the movable rod and the rotating tube are lower than the height of the lower end of the glue spraying head.

5. A semi-automatic gluing system according to claim 1, characterized in that: There are two control circuits, each of which includes an electrically connected adjustable resistor and resistor, a transistor and a relay, the positive power input terminal of the relay is connected to the positive control power input terminal, one end of the adjustable resistor is connected to one end of the resistor and the base of the transistor, the collector of the transistor is connected to the negative power input terminal of the relay, and the emitter of the transistor is connected to the negative control power input terminal of the relay.

6. A semi-automatic gluing system according to claim 1, characterized in that: The smoothing mechanism includes a fixed bin, an electric heating plate and a scraper. The electric heating plate is installed at the upper end of the fixed bin. There are fixing bolts at the side end of the fixed bin. The upper end of the scraper is movably sleeved at the lower end of the fixed bin and is fixed by bolts. The lower end height of the scraper is lower than the height of the gluing head and higher than the lower end height of the rotating tube.

7. A method for measuring and controlling the thickness of a glue coating surface of a semi-automatic glue coating system according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: S1: placing the gluing part of the component to be glued vertically or horizontally at the lower end of the gluing head; S2: PLC controls the gluing mechanism to move left and right or forward and backward to perform gluing operation on the gluing part of the component, and the glue pump is powered to extract the glue in the glue tank and output it to the gluing part of the component through the gluing head; S3: the depth detection mechanism monitors the depth of the gluing position. When the depth is deep, the voltage signal output to the electric proportional valve is high, and the amount of glue entering the gluing part through the gluing head becomes larger. When the depth is shallow, the glue pump is powered to pump out the glue in the glue tank and output it to the gluing part of the component through the gluing head. , the voltage signal output to the electric proportional valve is low, and the amount of glue entering the gluing part through the gluing head becomes smaller; S4: The height detection mechanism monitors the height difference between the gluing head and the gluing part. When the distance between the lower end of the gluing head and the upper end of the gluing part is large, the motor reduction mechanism A controls the gluing head to descend. When the distance between the lower end of the gluing head and the upper end of the gluing part is small, the motor reducer A controls the gluing head to rise. S5: The scraper plate of the smoothing mechanism smoothes the glue at the gluing station of the component under the heating action of the electric heating plate.

8. The method for measuring and controlling the thickness of the glue coating surface of a semi-automatic glue coating system according to any one of claim 7, characterized in that: In step S3, all the gluing stations of the component can be at the same height after gluing.

9. The method for measuring and controlling the thickness of the glue coating surface of a semi-automatic glue coating system according to any one of claim 7, characterized in that: In step S4, the lower end of the glue spraying head and the glue spraying position can be kept at a constant height.

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