Constant-temperature gluing device

Abstract

The utility model provides a constant-temperature gluing device which comprises a shell, and the shell comprises a glue storage cavity, a glue injection cavity and a glue inlet valve; the glue inlet valve is arranged on the side wall of the glue storage cavity, the glue storage cavity is communicated with the glue injection cavity, and an ultrasonic generation assembly is arranged on the upper portion of the glue injection cavity; the shell is fixedly connected with a constant-temperature water tank, the constant-temperature water tank comprises a temperature control flow channel and a constant-temperature control mechanism for keeping the constant-temperature water tank in a constant-temperature state, circulating fluid flows in the temperature control flow channel, and the temperature control flow channel is fixedly connected to the side wall of the glue storage cavity; a first motor is further arranged, a shell of the first motor is fixedly connected to the shell, the output end of the first motor is connected with a driving rod, the other end of the driving rod is connected with a stirring paddle, and the stirring paddle is rotatably arranged in the glue storage cavity; a pushing rod is further slidably connected to the outer wall of the driving rod, the pushing rod is slidably connected with the glue storage cavity, the pushing rod is connected with a moving assembly, the moving assembly enables the pushing rod to move upwards or downwards in the axis direction of the pushing rod, and the temperature of glue is kept constant in the gluing process.

Description

Technical Field

[0001] The utility model relates to the technical field of glue coating equipment, in particular to a constant temperature glue coating device. Background Art

[0002] At present, glue is widely used. For example, hot melt glue is often used to bond paper packaging materials. However, the performance of glue is significantly affected by temperature. If the temperature is too low or too high, it will affect the quality of the final product, resulting in loose adhesion and debonding. The equipment used to automatically apply glue needs to have a constant temperature function to keep the glue at the optimal working temperature. Therefore, those skilled in the art are in urgent need of developing a reliable and efficient constant temperature glue coating device. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a constant temperature glue coating device, which solves the problem of non-constant glue temperature during glue coating.

[0004] The utility model adopts the following technical solutions.

[0005] A constant temperature glue coating device comprises a shell, wherein the shell comprises a glue storage cavity, a glue injection cavity and a glue inlet valve;

[0006] The glue inlet valve is arranged on the side wall of the glue storage chamber, the glue storage chamber is connected with the glue injection chamber, and an ultrasonic generating component is arranged on the upper part of the glue injection chamber;

[0007] The shell is fixedly connected with a constant temperature water tank, the constant temperature water tank comprises a temperature control channel and a constant temperature control mechanism for maintaining the constant temperature water tank at a constant temperature, a circulating fluid flows in the temperature control channel, and the temperature control channel is fixedly connected to the side wall of the glue storage cavity;

[0008] A first motor is also provided, the shell of the first motor is fixedly connected to the housing, the output end of the first motor is connected to a driving rod, the other end of the driving rod is connected to a stirring paddle, and the stirring paddle is rotatably provided in the glue storage cavity;

[0009] The outer wall of the driving rod is also slidably connected to a push rod, the push rod is slidably connected to the glue storage chamber, the push rod is connected to a moving component, the moving component is fixed to the shell, and the moving component enables the push rod to move upward or downward along its axial direction.

[0010] Preferably, the moving assembly includes a second motor, a screw rod and a transmission seat, the transmission seat is fixedly connected to the push rod, the transmission seat is connected to the screw rod by a thread, the outer shell of the second motor is fixedly connected to the housing, the output end of the second motor is connected to a driving gear, the screw rod is coaxially provided with a driven gear, the driving gear and the driven gear are meshed with each other, and the rotation of the output end of the second motor is transmitted to the screw rod, thereby driving the transmission seat to move upward or downward along its axial direction.

[0011] Preferably, the constant temperature water tank is also provided with a circulating water pump.

[0012] Preferably, a first temperature sensor is provided in the constant temperature water tank, and a second temperature sensor is provided in the glue storage chamber.

[0013] Preferably, a heat-insulating layer is provided on the outer wall of the constant temperature water tank.

[0014] Preferably, a shut-off assembly is arranged above the glue injection chamber, and the shut-off assembly includes a valve body, a piston slidably installed in the valve body, and a ejector pin vertically installed at the lower end of the piston and slidably inserted in the glue injection chamber, wherein the ejector pin has a sealing end for closing the outlet of the glue injection chamber, and the piston is connected to a driving component, and the driving component causes the piston to move upward or downward along its axial direction.

[0015] Preferably, the constant temperature control mechanism includes a semiconductor refrigeration sheet and an electric heating rod.

[0016] Preferably, the driving component includes an air chamber, the piston is slidably connected to the air chamber, the piston divides the air chamber into an upper chamber and a lower chamber, the lower chamber is provided with an intake valve and an exhaust valve, the upper chamber is provided with a spring, and the spring abuts against the upper end of the piston.

[0017] The beneficial effects of the utility model are:

[0018] The utility model discloses a constant temperature glue coating device, which is provided with a glue storage chamber and a glue injection chamber. The constant temperature water tank makes the circulating fluid reach the set temperature through a constant temperature control mechanism. The side wall of the glue storage chamber is provided with a temperature control flow channel, and a constant temperature circulating fluid flows in the temperature control flow channel, which can accurately control the temperature of the glue in the glue storage chamber. At the same time, a stirring paddle is also provided in the glue storage chamber, which helps to evenly adjust the temperature of the glue. The ultrasonic generating component on the upper part of the glue injection chamber starts to work, so that the bubbles in the glue are fully discharged, avoiding the output of glue containing bubbles, which affects the glue coating performance. Therefore, it can be ensured that the glue is at the best working temperature during the glue coating process, thereby improving the glue coating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a cross-sectional view of an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 Enlarged view of part A.

[0022] Description of reference numerals:

[0023] 1. Shell; 2. Glue inlet valve; 3. First motor; 4. Driving rod; 5. Push rod; 61. Second motor; 62. Driven gear; 63. Driving gear; 64. Screw rod; 65. Transmission seat; 7. Stirring paddle; 8. Constant temperature water tank; 81. Temperature control flow channel; 82. Electric heating rod; 83. Semiconductor refrigeration plate; 84. Circulating water pump; 85. First temperature sensor; 86. Insulation layer; 9. Glue storage chamber; 91. Second temperature sensor; 10. Glue injection chamber; 11. Valve body; 12. Piston; 13. Ejector pin; 131. Sealing end; 141. Upper chamber; 1411. Spring; 142. Lower chamber; 1421. Inlet valve; 1422. Exhaust valve; 15. Ultrasonic generating assembly. DETAILED DESCRIPTION

[0024] The drawings are only used for illustrative purposes and should not be construed as limitations of this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product.

[0025] For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The technical solution of the utility model is further described below in conjunction with the drawings and embodiments.

[0026] As attached Figure 1-2 The constant temperature glue coating device shown comprises a housing 1, wherein the housing 1 comprises a glue inlet valve 2, a glue storage cavity 9 and a glue injection cavity 10;

[0027] The glue inlet valve 2 is arranged on the side wall of the glue storage chamber 9 , and the glue storage chamber 9 is communicated with the glue injection chamber 10 .

[0028] An ultrasonic generating assembly 15 is disposed on the upper portion of the glue injection cavity 10. When the ultrasonic generating assembly 15 is activated, ultrasonic waves are uniformly generated inside the glue injection cavity 10, so that bubbles generated in the glue during the stirring process can be fully discharged, thereby achieving a good defoaming effect.

[0029] The shell 1 is fixedly connected to a constant temperature water tank 8, which includes a temperature control channel 81 and a constant temperature control mechanism for maintaining the constant temperature water tank 8 at a constant temperature. A circulating fluid flows in the temperature control channel 81, and the temperature control channel 81 is fixedly connected to the side wall of the glue storage chamber 9.

[0030] When the constant temperature water tank 8 regulates the temperature of the glue in the glue storage chamber 9, the first motor 3, the driving rod 4 and the stirring paddle 7 are arranged to stir the glue in the glue storage chamber 9 so that the temperature regulation effect is more uniform. The outer shell of the first motor 3 is fixedly connected to the shell 1, and the output end of the first motor 3 is connected to the driving rod 4, and the other end of the driving rod 4 is connected to the stirring paddle 7. The stirring paddle 7 is rotatably arranged in the glue storage chamber 9.

[0031] In order to push the glue in the glue storage chamber 9 to flow out, a pushing rod 5 and a moving component are provided. The outer wall of the driving rod 4 is slidably connected with the pushing rod 5. The pushing rod 5 is slidably connected to the glue storage chamber 9. The pushing rod 5 is connected to the moving component. The moving component is fixed to the shell 1. The moving component enables the pushing rod 5 to move upward or downward along its axial direction.

[0032] In some embodiments, the moving assembly includes a second motor 61, a screw rod 64 and a transmission seat 65. The transmission seat 65 is fixedly connected to the push rod 5. The transmission seat 65 and the screw rod 64 are connected by threads. The outer shell of the second motor 61 is fixedly connected to the shell 1. The output end of the second motor 61 is connected to a driving gear 63. The screw rod 64 is coaxially provided with a driven gear 62. The driving gear 63 and the driven gear 62 are meshed with each other to transmit the rotation of the output end of the second motor 61 to the screw rod 64, thereby driving the transmission seat 65 to move upward or downward along its axial direction, and finally enabling the push rod 5 to move upward or downward along its axial direction.

[0033] In some embodiments, the constant temperature water tank 8 is also provided with a circulating water pump 84, which pumps the circulating fluid in the constant temperature water tank 8 into the temperature control channel 81, and the circulating fluid flows into the constant temperature water tank 8 again through the temperature control channel 81, ensuring that the circulating fluid in the temperature control channel 81 is always in a state of sufficient and constant temperature flow, thereby achieving constant temperature regulation of the glue and maintaining a constant temperature state, ensuring the constant temperature of the glue and improving the coating quality of the glue.

[0034] In some embodiments, a first temperature sensor 85 is provided in the temperature control channel 81, and a second temperature sensor 91 is provided in the glue storage chamber 9, so as to monitor and control the temperature of the circulating fluid in the constant temperature water tank 8 and the glue in the glue storage chamber 9, thereby ensuring that the glue in the glue storage chamber 9 is at the optimal operating temperature and avoiding the circulating fluid in the constant temperature water tank 8 from boiling due to excessive temperature, thereby affecting the heat transfer efficiency.

[0035] In some embodiments, in order to prevent the temperature of the circulating fluid in the constant temperature water tank 8 from being affected by the outside world and to achieve the purpose of reducing energy consumption, a thermal insulation layer 86 of foam material is provided on the outer wall of the constant temperature water tank 8 .

[0036] In some embodiments, in order to control the start and stop of glue discharging by the glue coating device, a shut-off component is also provided. The shut-off component includes a valve body 11, a piston 12 slidably installed in the valve body 11, and a ejector pin 13 vertically installed at the lower end of the piston 12 and slidably inserted in the glue injection chamber 10. The ejector pin 13 has a sealing end 131 for closing the outlet of the glue injection chamber 10. The piston 12 is connected to a driving component, and the driving component causes the piston 12 to move upward or downward along its axial direction.

[0037] In some embodiments, the driving component includes an air chamber, and the piston 12 is slidably connected to the air chamber. The piston 12 divides the air chamber into an upper chamber 141 and a lower chamber 142. The lower chamber 142 is provided with an intake valve 1421 and an exhaust valve 1422. A spring 1411 is provided in the upper chamber 141, and the spring 1411 abuts against the upper end of the piston 12.

[0038] In some embodiments, the constant temperature control mechanism includes an electric heating rod 82 and a semiconductor cooling sheet 83, which can heat or cool the circulating fluid in the temperature control channel 81, thereby increasing the temperature adjustment range of the constant temperature control mechanism.

[0039] The working principle of the utility model is as follows:

[0040] When the glue inlet valve 2 is open and the shutoff assembly is in the shutoff state, the inlet valve 1421 is closed, the exhaust valve 1422 is opened, the gas in the lower chamber 142 is discharged, and the piston 12 is pushed downward under the elastic force of the spring 1411, so that the ejector pin 13 moves downward and the sealing end 131 closes the outlet of the glue injection chamber 10, and the glue flows into the glue storage chamber 9 through the glue inlet valve 2 and cannot flow out of the glue injection chamber 10;

[0041] At this time, the push rod 5 is at the highest point of the stroke. When a certain amount of glue flows into the glue storage chamber 9, the glue inlet valve 2 is closed. Then, the constant temperature control mechanism in the constant temperature water tank 8 adjusts the circulating fluid in the constant temperature water tank 8 to the set temperature, and the circulating water pump 84 pumps the circulating fluid in the constant temperature water tank 8 into the temperature control channel 81 to ensure that the circulating fluid in the temperature control channel 81 is always in a state of sufficient and constant temperature flow, and adjusts the temperature of the glue in the glue storage chamber 9 by heat conduction. The first motor 3 drives the driving rod 4 to rotate, so that the stirring paddle 7 also rotates, and the glue in the glue storage chamber 9 is fully stirred, so that the temperature adjustment effect is more uniform;

[0042] When the reading of the second temperature sensor 91 in the glue storage chamber 9 reaches the set temperature, the moving component causes the push rod 5 to start moving downward, pushing the glue in the glue storage chamber 9, and the second motor 61 drives the active gear 63 to rotate the set angle, driving the driven gear 62 to rotate, so that the screw rod 64 rotates, thereby driving the transmission seat 65 to move downward; the transmission seat 65 is fixedly connected to the push rod 5, thereby converting the rotational movement of the second motor 61 into the downward movement of the push rod 5; at the same time, the shut-off component is in the open state, the air inlet valve 1421 is opened, the exhaust valve 1422 is closed, and the gas enters the lower chamber 142. When the gas pressure is greater than the elastic force of the spring 1411, the piston 12 is pushed upward and compresses the spring 1411, thereby causing the ejector pin 13 to move upward until the elastic force of the spring 1411 is balanced with the gas pressure. At this time, the sealing end 131 leaves the outlet of the glue injection chamber 10, and the glue can flow out of the glue injection chamber 10;

[0043] Furthermore, under the push of the push rod 5, the glue in the glue storage chamber 9 flows out from the outlet of the glue injection chamber 10, and the ultrasonic generating component 15 arranged in the glue injection chamber 10 is in an open state, and ultrasonic waves are evenly generated inside the glue injection chamber 10, so that the bubbles generated by stirring in the glue can be fully discharged, and finally the quantitative output temperature is at the optimal working temperature and there are no bubbles in the glue. When the quantitative glue output is completed, the shut-off component will switch from the open state to the shut-off state, closing the outlet of the glue injection chamber 10 to prevent the glue from continuing to flow out.

[0044] When the glue in the glue storage chamber 9 is used up, the push rod 5 is at the lowest point of the stroke, the shut-off component is switched to the shut-off state, the second motor 61 rotates in the other direction, and the driven gear 62 is driven to rotate through the active gear 63, so that the screw rod 64 also rotates in the other direction, and then the rotational motion of the second motor 61 is converted into the upward movement of the push rod 5. When the push rod 5 is at the highest point of the stroke, the glue inlet valve 2 is opened, and the glue flows into the glue storage chamber 9 again, and the above working process is repeated to continue the constant temperature gluing.

[0045] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A constant temperature glue coating device, comprising a housing, characterized in that: The housing comprises a glue storage cavity, a glue injection cavity and a glue inlet valve; The glue inlet valve is arranged on the side wall of the glue storage chamber, the glue storage chamber is connected with the glue injection chamber, and an ultrasonic generating component is arranged on the upper part of the glue injection chamber; The shell is fixedly connected with a constant temperature water tank, the constant temperature water tank comprises a temperature control channel and a constant temperature control mechanism for maintaining the constant temperature water tank at a constant temperature, a circulating fluid flows in the temperature control channel, and the temperature control channel is fixedly connected to the side wall of the glue storage cavity; A first motor is also provided, the shell of the first motor is fixedly connected to the housing, the output end of the first motor is connected to a driving rod, the other end of the driving rod is connected to a stirring paddle, and the stirring paddle is rotatably provided in the glue storage cavity; The outer wall of the driving rod is also slidably connected to a push rod, the push rod is slidably connected to the glue storage chamber, the push rod is connected to a moving component, the moving component is fixed to the shell, and the moving component enables the push rod to move upward or downward along its axial direction.

2. A constant temperature glue coating device according to claim 1, characterized in that: The moving assembly includes a second motor, a screw and a transmission seat, the transmission seat is fixedly connected to the push rod, the transmission seat is connected to the screw by threads, the outer shell of the second motor is fixedly connected to the housing, the output end of the second motor is connected to a driving gear, the screw is coaxially provided with a driven gear, the driving gear and the driven gear are meshed with each other, and the rotation of the output end of the second motor is transmitted to the screw, thereby driving the transmission seat to move upward or downward along its axial direction.

3. A constant temperature glue coating device according to claim 1, characterized in that: The constant temperature water tank is also provided with a circulating water pump.

4. A constant temperature glue coating device according to claim 1, characterized in that: A first temperature sensor is arranged in the constant temperature water tank, and a second temperature sensor is arranged in the glue storage cavity.

5. A constant temperature glue coating device according to claim 1, characterized in that: A heat preservation layer is arranged on the outer wall of the constant temperature water tank.

6. A constant temperature glue coating device according to claim 1, characterized in that: A shut-off assembly is arranged above the glue injection chamber, and the shut-off assembly includes a valve body, a piston slidably mounted in the valve body, and a ejector pin vertically mounted at the lower end of the piston and slidably inserted in the glue injection chamber, wherein the ejector pin has a sealing end for closing the outlet of the glue injection chamber, and the piston is connected to a driving component, and the driving component enables the piston to move upward or downward along its axial direction.

7. A constant temperature glue coating device according to claim 1, characterized in that: The constant temperature control mechanism comprises a semiconductor refrigeration sheet and an electric heating rod.

8. A constant temperature glue coating device according to claim 6, characterized in that: The driving component includes an air chamber, the piston is slidably connected to the air chamber, the piston divides the air chamber into an upper chamber and a lower chamber, the lower chamber is provided with an intake valve and an exhaust valve, the upper chamber is provided with a spring, and the spring abuts against the upper end of the piston.

Images