A laminator with a compression mechanism

Abstract

The utility model discloses a laminating machine with compression mechanism belongs to laminating machine technical field, has solved the temperature control module in heat -press laminating machine if PID parameter maladjustment or solid -state relay breakdown will directly cause temperature out of control phenomenon's problem. Including work table, the bottom plate of setting on work table, the vertical displacement of being located bottom plate top compression board and heating plate, the side wall of compression board is provided with the recess that recesses inward, and heating plate is installed in recess, and heating plate is coupled with temperature out of control protection circuit, and temperature out of control protection circuit controls electric heating plate processing and when detecting overtemperature and cut -off, and the loop of heating plate is disconnected and self -locking alarm until manual reset. The utility model detects mechanical temperature control switch overtemperature action, current relay overcurrent signal trigger or underflow signal disconnect time, through locking the normally closed contact of relay and cutting off the power supply loop of contactor coil physically, forcibly disconnects main heating circuit and self -locking alarm, until manual reset.

Description

Technical Field

[0001] This utility model relates to the field of laminating machine technology, and in particular to a laminating machine with a pressing mechanism. Background Technology

[0002] Hot press laminators are high-efficiency devices used for material bonding, widely applied in industries such as electronics, packaging, and textiles. They bond two or more layers of material together tightly through heating and pressurization, ensuring a strong and smooth bond. The equipment typically features a precise temperature control system that adjusts the heating temperature to suit the characteristics of different materials; simultaneously, the pressure device applies pressure evenly, ensuring uniform bonding. Hot press laminators have a simple and user-friendly interface, allowing users to set bonding time and pressure parameters according to production needs. Their high degree of automation effectively improves production efficiency and reduces labor costs. Furthermore, the equipment includes safety features to ensure operator safety. With their compact structure and small footprint, hot press laminators are suitable for various production environments and are an indispensable piece of equipment in modern industrial production.

[0003] When the hot press laminating machine is heating and pressurizing, if the temperature control module in the hot press laminating machine experiences PID parameter misalignment or solid-state relay breakdown, it will directly cause temperature runaway, which manifests as abnormal overheating. The consequences have a destructive chain effect, and overheating will cause the material to burn and carbonize.

[0004] Therefore, a laminating machine with a pressing mechanism is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a bonding machine with a pressing mechanism.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A bonding machine with a pressing mechanism includes a worktable, a base plate disposed on the worktable, a pressure plate located above the base plate and capable of vertical displacement, and a heating plate. The side wall of the pressure plate has an inwardly recessed groove, and the heating plate is installed in the groove. The heating plate is coupled to a temperature runaway protection circuit. The temperature runaway protection circuit controls the heating plate to process and disconnects the circuit where the heating plate is located when overheating and current interruption are detected, and self-locks and alarms until manual reset.

[0007] Preferably, the temperature runaway protection circuit includes a solid-state relay, a current transformer, a mechanical temperature control switch, a contactor, a main circuit breaker, a reset button, a control power supply, a thermal relay, a contactor coil, a locking relay, an alarm light, and a current relay. The main circuit breaker is used to connect to the main power supply. The output terminal of the main circuit breaker is connected to the input terminal of the contactor. The output terminal of the contactor is connected to the common terminal of the mechanical temperature control switch. The normally closed terminal of the mechanical temperature control switch is connected to the primary input terminal of the current transformer. The primary output terminal of the current transformer is connected to the AC input terminal of the solid-state relay. The AC output terminal of the solid-state relay is connected to the power input terminal of the heating plate. The positive terminal of the control power supply is connected to the control terminal of the mechanical temperature control switch. The control terminal of the mechanical temperature control switch is connected to the normally closed contact of the thermal relay. The normally closed contact of the thermal relay is connected to the normally closed contact of the locking relay. The normally closed contact of the locking relay is connected to the first terminal of the contactor coil. The second terminal of the contactor coil is connected to... The secondary output terminal of the current transformer is connected to the negative terminal of the control power supply. The normally open contact of the current relay is connected to the positive terminal of the control power supply. The normally open contact of the current relay is connected to the first terminal of the coil of the locking relay. The normally closed contact of the current relay is connected to the positive terminal of the control power supply. The normally closed contact of the current relay is connected to the second terminal of the coil of the locking relay. The coil of the locking relay is connected to the first terminal of the reset button. The second terminal of the reset button is connected to the negative terminal of the control power supply. The normally open contact of the locking relay is connected to the positive terminal of the control power supply. The normally open contact of the locking relay is connected to the positive terminal of the alarm light. The negative terminal of the alarm light is connected to the negative terminal of the control power supply.

[0008] Preferably, the temperature runaway protection circuit further includes a PID temperature controller and a thermocouple. The thermocouple and the mechanical temperature control switch are mounted on the pressure plate. The output terminal of the thermocouple is coupled to the input terminal of the PID temperature controller, and the output terminal of the PID temperature controller is connected to the input terminal of the solid-state relay.

[0009] Preferably, a mounting base is fixedly connected to one side of the workbench, and the alarm light and reset button are both mounted on the mounting base.

[0010] Preferably, it also includes a vertically arranged cylinder, the piston rod of which is fixedly connected to the top surface of the pressure plate via a connecting seat.

[0011] Preferably, it also includes columns fixedly connected to the four inner corners of the top surface of the workbench, and a top plate fixedly connected to the top of the columns. The cylinder is fixedly connected to the top plate, and the piston rod of the cylinder is disposed through the top plate.

[0012] This utility model has the following beneficial effects: When the mechanical temperature control switch is detected to be overheating, or the current relay is triggered by an overcurrent signal or the undercurrent signal is disconnected, this utility model physically cuts off the power supply circuit of the contactor coil by locking the normally closed contact of the relay, forcibly disconnecting the main heating circuit and triggering a self-locking alarm until it is manually reset. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural block diagram of the temperature runaway protection circuit in this utility model.

[0015] In the diagram: 1. Workbench; 2. Base plate; 3. Column; 4. Top plate; 5. Cylinder; 6. Pressure plate; 7. Heating plate; 8. Alarm light; 9. PID temperature controller; 10. Reset button; 11. Thermocouple; 12. Solid-state relay; 13. Main circuit breaker; 14. Contactor; 15. Mechanical temperature control switch; 16. Thermal relay; 17. Contactor coil; 18. Control power supply; 19. Locking relay; 20. Current transformer; 21. Current relay. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0019] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Furthermore, the terms "first," "second," and "third" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] A laminating machine with a pressing mechanism, such as Figure 1 As shown, the system includes a workbench 1, a base plate 2 mounted on the workbench 1, a pressure plate 6 located above the base plate 2 and capable of vertical displacement, and a heating plate 7. The side wall of the pressure plate 6 has an inwardly recessed groove, and the heating plate 7 is installed in the groove. The system also includes a vertically mounted cylinder 5, a column 3 fixedly connected to the four internal corners of the top surface of the workbench 1, and a top plate 4 fixedly connected to the top of the column 3. The cylinder 5 is fixedly connected to the top plate 4, and the piston rod of the cylinder 5 passes through the top plate 4. The piston rod of the cylinder 5 is fixedly connected to the top surface of the pressure plate 6 through a connecting seat.

[0023] like Figure 2 As shown, the heating plate 7 is coupled to a temperature runaway protection circuit. The temperature runaway protection circuit controls the processing of the heating plate and disconnects the circuit where the heating plate 7 is located when an overheat is detected and the current is interrupted, and then self-locks and alarms until manual reset.

[0024] The temperature runaway protection circuit includes a PID temperature controller 9, a thermocouple 11, a solid-state relay 12, a current transformer 20, a mechanical temperature control switch 15, a contactor 14, a main circuit breaker 13, a reset button 10, a control power supply 18, a thermal relay 16, a contactor coil 17, a locking relay 19, an alarm light 8, and a current relay 21. The main circuit breaker 13 is used to connect to the main power supply. The output terminal of the main circuit breaker 13 is connected to the input terminal of the contactor 14. The output terminal of the contactor 14 is connected to the common terminal of the mechanical temperature control switch 15. The normally closed terminal of the mechanical temperature control switch 15 is connected to the primary input terminal of the current transformer 20. The primary output terminal of the current transformer 20 is connected to the AC input terminal of the solid-state relay 12. The AC output terminal of the solid-state relay 12 is connected to the power input terminal of the heating plate 7. The positive terminal of the control power supply 18 is connected to the control terminal of the mechanical temperature control switch 15. The control terminal of the mechanical temperature control switch 15 is connected to the normally closed contact of the thermal relay 16. The normally closed contact of the thermal relay 16 is connected to the normally closed contact of the locking relay 19. The normally closed contact of the locking relay 19 is connected to the first terminal of the contactor coil 17. The second terminal of the contactor coil 17 is connected to the negative terminal of the control power supply 18. The secondary output terminal of the current transformer 20 is connected to both ends of the coil of the current relay 21. The normally open contact of the current relay 21 is connected to the positive terminal of the control power supply 18. The normally open contact of the current relay 21 is connected to the first end of the coil of the locking relay 19, the normally closed contact of the current relay 21 is connected to the positive terminal of the control power supply 18, the normally closed contact of the current relay 21 is connected to the second end of the coil of the locking relay 19, the coil of the locking relay 19 is connected to the first end of the reset button 10, the second end of the reset button 10 is connected to the negative terminal of the control power supply 18, the normally open contact of the locking relay 19 is connected to the positive terminal of the control power supply 18, the normally open contact of the locking relay 19 is connected to the positive terminal of the alarm light 8, and the negative terminal of the alarm light 8 is connected to the negative terminal of the control power supply 18. The temperature runaway protection circuit also includes a thermocouple 11 and a mechanical temperature control switch 15 mounted on the pressure plate 6. The output terminal of the thermocouple 11 is coupled to the input terminal of the PID temperature controller 9, and the output terminal of the PID temperature controller 9 is connected to the input terminal of the solid-state relay 12. A mounting base is fixedly connected to one side of the workbench 1, and the alarm light 8 and the reset button 10 are both mounted on the mounting base.

[0025] When the hot press bonding machine is heating, the main power supply of three phases is input after the main circuit breaker 13 is closed, and the output of the main circuit breaker 13 is sent to the input terminal of the contactor 14. When the PID temperature controller 9 issues a start command, the control power supply 18, which is a 24V power supply, outputs current. The current continues to flow through the control terminal of the mechanical temperature control switch 15. If the temperature of the heating plate 7 does not exceed the limit, the control terminal of the mechanical temperature control switch 15 is closed. The current passes through the normally closed contact of the thermal relay 16 to the normally closed contact of the locking relay 19, and finally drives the coil of the contactor 14, causing the main contact of the contactor 14 to close. At this time, the current flows from the output terminal of the contactor 14 to the mechanical temperature control switch 15, and then to the primary pin of the current transformer 20. The current transformer 20 outputs to the AC input terminal of the solid-state relay 12. If the PID temperature controller 9 outputs normally, the solid-state relay 12 conducts, so that the current is loaded onto the heating plate 7 through its output terminal, and the heating process starts.

[0026] When the temperature of the heating plate 7 exceeds the mechanical set threshold of the mechanical temperature control switch 15, the mechanical temperature control switch 15 physically disconnects and cuts off the three-phase current. At the same time, the control terminal of the mechanical temperature control switch 15 is disconnected, causing the contactor coil 17 to lose power, thus doubly blocking the heating.

[0027] If the solid-state relay 12 breaks down and short-circuits, and the heating current continues to exceed 110% of the rated value, the secondary pin of the current transformer 20 senses an overcurrent signal, driving the coil of the current relay 21. Its normally open contact closes, supplying the +24V of the control power supply 18 to the coil pin of the locking relay 19. At the same time, the coil pin of the locking relay 19 is connected to the -24V of the control power supply 18 through the reset button 10 to form a circuit. The locking relay 19 is energized and self-locks through its normally open contact. At this time, the normally closed contact pin of the locking relay 19 opens, forcing the contactor coil 17 to be de-energized.

[0028] If the solid-state relay 12 is open-circuited, causing the current to drop below 10% of the rated value, the coil of the current relay 21 will lose power, causing its normally closed contact pin to open. This will immediately cut off the negative power circuit of the coil pin of the locking relay 19. The locking relay 19 will then release, causing its normally closed contact pin to open, which will also force the contactor 14 to lose power.

[0029] After any of the above faults are triggered, the normally open contact pin of the locking relay 19 remains closed, so that the positive terminal of the alarm lamp 8 is continuously energized and the red warning light is constantly on. The entire circuit enters the locked state. Even if the fault signal disappears, the contactor 14 cannot be restarted because the self-locking circuit of the locking relay 19 continues to conduct. Manual intervention is required. Pressing the reset button 10 will disconnect the circuit, interrupting the coil circuit of the locking relay 19 and causing the self-locking to be released. The normally open contact of the locking relay 19 will reset and open, and the normally closed contact will close again, restoring the circuit to standby state.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A laminating machine with a pressing mechanism, characterized in that, The device includes a workbench (1), a base plate (2) set on the workbench (1), a pressure plate (6) located above the base plate (2) that can be vertically displaced, and a heating plate (7). The side wall of the pressure plate (6) has an inwardly recessed groove. The heating plate (7) is installed in the groove. The heating plate (7) is coupled to a temperature runaway protection circuit. The temperature runaway protection circuit controls the processing of the heating plate and disconnects the circuit where the heating plate (7) is located when an overheat is detected and the current is interrupted, and then self-locks and alarms until manual reset.

2. A laminating machine with a pressing mechanism according to claim 1, characterized in that, The temperature runaway protection circuit includes a solid-state relay (12), a current transformer (20), a mechanical temperature control switch (15), a contactor (14), a main circuit breaker (13), a reset button (10), a control power supply (18), a thermal relay (16), a contactor coil (17), a locking relay (19), an alarm light (8), and a current relay (21). The main circuit breaker (13) is used to connect to the main power supply. The output terminal of the main circuit breaker (13) is connected to the input terminal of the contactor (14). The output terminal of the contactor (14) is connected to the common terminal of the mechanical temperature control switch (15). The normally closed terminal of the mechanical temperature control switch (15) is connected to the primary input terminal of the current transformer (20). The primary output terminal of the current transformer (20) is connected to the AC input terminal of the solid-state relay (12). The AC output terminal of the solid-state relay (12) is connected to the power input terminal of the heating plate (7). The positive terminal of the control power supply (18) is connected to the control terminal of the mechanical temperature control switch (15). The control terminal of the mechanical temperature control switch (15) is connected to the normally closed contact of the thermal relay (16). The normally closed contact of the thermal relay (16) is connected to the normally closed contact of the locking relay (19). The normally closed contact of the locking relay (19) is connected to the first terminal of the contactor coil (17). The second terminal of the contactor coil (17) is connected to... The negative terminal of the control power supply (18) and the secondary output terminal of the current transformer (20) are respectively connected to the two ends of the coil of the current relay (21). The normally open contact of the current relay (21) is connected to the positive terminal of the control power supply (18). The normally open contact of the current relay (21) is connected to the first end of the coil of the locking relay (19). The normally closed contact of the current relay (21) is connected to the positive terminal of the control power supply (18). The normally closed contact of the current relay (21) is connected to the second end of the coil of the locking relay (19). The coil of the locking relay (19) is connected to the first end of the reset button (10). The second end of the reset button (10) is connected to the negative terminal of the control power supply (18). The normally open contact of the locking relay (19) is connected to the positive terminal of the control power supply (18). The normally open contact of the locking relay (19) is connected to the positive terminal of the alarm light (8). The negative terminal of the alarm light (8) is connected to the negative terminal of the control power supply (18).

3. A laminating machine with a pressing mechanism according to claim 2, characterized in that, The temperature runaway protection circuit also includes a PID temperature controller (9PID) and a thermocouple (11). The thermocouple (11) and the mechanical temperature control switch (15) are mounted on the pressure plate (6). The output end of the thermocouple (11) is coupled to the input end of the PID temperature controller (9PID). The output end of the PID temperature controller (9PID) is connected to the input end of the solid-state relay (12).

4. A laminating machine with a pressing mechanism according to claim 3, characterized in that, The workbench (1) is fixedly connected to a mounting base on one side, and the alarm light (8) and reset button (10) are both mounted on the mounting base.

5. A laminating machine with a pressing mechanism according to claim 1, characterized in that, It also includes a vertically arranged cylinder (5), the piston rod of which is fixedly connected to the top surface of the pressure plate (6) through a connecting seat.

6. A laminating machine with a pressing mechanism according to claim 5, characterized in that, It also includes a column (3) fixedly connected to the four corners of the top surface of the workbench (1) and a top plate (4) fixedly connected to the top of the column (3). The cylinder (5) is fixedly connected to the top plate (4), and the piston rod of the cylinder (5) is set through the top plate (4).

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