Quantitative sealant coating device for threaded connecting piece

Abstract

The invention discloses a quantitative sealant coating device for a threaded connecting piece. A connector I is arranged in mounting holes formed in a hollow base and a fixing plate, and a connector II is fixed to the fixing plate; one end of the U-shaped communicating pipe is inserted and fixed at the lower end of the connector I, and the other end is inserted and fixed at the lower end of the connector II; a motor with a speed reducer is fixed on the fixing frame; a cam is fixed at the end part of a motor shaft; the needle tube type rubber sleeve is fixed on the fixing frame by a fixing chuck, a rubber sleeve piston at the upper end of the needle tube type rubber sleeve is opposite to the lower end of the cam, and an outlet of the needle tube type rubber sleeve extends into a port at the other end of the U-shaped communicating pipe; the non-contact liquid level sensor is detachably sleeved and fixed at the upper end part of the other end of the U-shaped communicating pipe; and the signal output end of the non-contact liquid level sensor for setting the highest limit and the lowest limit is connected with the signal input end of the motor. The gluing device can automatically control the gluing position and the gluing amount of the threaded connecting piece, is high in control accuracy, does not leave other parts, is convenient to operate, saves time and labor, and is high in gluing efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of threaded connector sealing, and relates to a sealant quantitative coating device for an external threaded connector. Background Art

[0002] Threaded connectors are a widely used type of detachable fixed connector, but there is a possibility that the connection will become loose due to changes such as vibration. Therefore, in mechanical assembly, the use of sealants can play a role in anti-loosening and sealing. Sealant can fill the tiny gaps between threads, improve the tightness and sealing of threads, and prevent loosening and leakage caused by vibration or temperature changes.

[0003] One of the common threaded connectors is to connect a part with a through hole or countersunk hole with a part with a thread. The threaded part and the threaded connector are tightened with sealant to prevent loosening. At this time, you only need to apply the glue to the threaded connection, and do not apply it to other positions. When applying sealant, there are requirements for the amount of sealant used. If the amount of sealant is insufficient, it cannot achieve a good anti-loosening, tightening and sealing effect. If too much glue is used, it will also affect the tightness of the thread, increase the difficulty of disassembly, increase friction between parts, accelerate machine aging and damage, and affect the service life. It is easy to flow to other positions, forming excess glue, or even staying on other parts, causing the movement of other parts to be stuck, which has serious consequences in some important assemblies.

[0004] Existing threaded connectors are glued manually, and the amount of glue used is controlled manually. The amount of glue applied to the thread surface each time is difficult to control, and each person operates in a different way, so the amount is also different. At the same time, the glue application process requires careful operation, which wastes time and affects work efficiency. Summary of the invention

[0005] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art and to provide a quantitative sealant coating device for threaded connectors. The coating device can automatically control the gluing position and gluing amount of the threaded connectors, and has high control accuracy, will not be left on other parts, is easy to operate, saves time and effort, saves labor, and has high gluing efficiency.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is: a quantitative sealant coating device for threaded connectors, comprising a hollow base, a fixing plate fixed on the hollow base, a U-shaped connecting pipe, a non-contact liquid level sensor, a connector head I with a threaded connector through hole, a connector head II with a U-shaped connecting pipe fixing hole, a needle tube rubber cylinder, a cam, a motor with a reducer and a fixing frame; the connector head I is placed in the mounting holes opened on the hollow base and the fixing plate, and the connector head II is fixed on the fixing plate; one end of the U-shaped connecting pipe is plugged and fixed to the lower end of the connector head I, and the other end passes through the through holes opened on the hollow base and the fixing plate and is plugged and fixed to the lower end of the connector head II; the fixing frame is fixed on the hollow base, and the motor with a reducer is fixed on the fixing frame through a motor seat, and a cam is fixed on the end of its motor shaft; the needle tube rubber cylinder is fixed to the fixing frame by a fixing chuck, and the rubber cylinder piston at its upper end is directly opposite to the lower end of the cam, and its outlet is inserted into the port at the other end of the U-shaped connecting pipe; the non-contact liquid level sensor is detachably sleeved It is fixed on the upper end of the other end of the U-shaped connecting tube to detect the liquid level height of the U-shaped connecting tube; the signal output end of the non-contact liquid level sensor is connected to the signal input end of the motor; the non-contact liquid level sensor sets the upper limit and the lower limit; when the liquid level height of the U-shaped connecting tube is at the upper limit of the non-contact liquid level sensor, the motor does not move, and the threaded connector is placed in the through hole of the connector head I for glue coating; when the liquid level height of the U-shaped connecting tube is at the lower limit of the non-contact liquid level sensor, the glue liquid can no longer meet the coating of the threaded connector, the non-contact liquid level sensor sends a signal to control the motor to move, the cam rotates, and when the cam rotates and is pressed onto the rubber cylinder piston, the needle-tube rubber cylinder fills the U-shaped connecting tube with glue liquid, and the cam continues to rotate until the maximum diameter is at the lower end, and the liquid level height of the U-shaped connecting tube is at the upper limit of the non-contact liquid level sensor again, the non-contact liquid level sensor sends a signal to control the motor to rotate and delays until the cam is separated from the rubber cylinder piston to stop the action, and replace the needle-tube rubber cylinder filled with glue liquid.

[0007] Further preferably, the non-contact liquid level sensor is a separate photoelectric liquid level sensor, an ultrasonic liquid level sensor, a laser liquid level sensor and an infrared liquid level sensor.

[0008] Further preferably, when no glue is added, the position of the cam with the largest diameter is at the highest point; when the position of the cam with the largest diameter is at the lowest point, the liquid level of the U-shaped connecting tube is at the highest limit of the non-contact liquid level sensor. The amount of glue flowing out of the needle tube type glue cylinder just makes up for the amount of glue missing in the U-shaped connecting tube.

[0009] Further preferably, the U-shaped connecting pipe is made of a transparent hose.

[0010] When in use, the height of the glue in the U-shaped connecting tube is determined according to the thickness of the hollow base and the fixed plate and the depth of the glue to be applied to the threaded head of the threaded connector. The non-contact liquid level sensor is adjusted to a good height and then fixed. At this time, the height of the glue in the U-shaped connecting tube is at the highest limit set by the non-contact liquid level sensor. The threaded connector is placed in the threaded connector through hole of the connector head Ⅰ, and the cap end of the threaded connector is clamped on the connector head Ⅰ. Then it can be taken out to apply the glue to the lower end of the threaded connector. After applying multiple threaded connectors, the height of the glue in the U-shaped connecting tube is reduced to the lowest limit set by the non-contact liquid level sensor. The non-contact liquid level sensor outputs a signal to start the motor with a reducer. The motor with a reducer drives the cam to rotate. The cam is crimped on the rubber cylinder piston. The rubber cylinder piston fills the U-shaped connecting tube with glue to replenish the reduced glue in the U-shaped connecting tube. When it is replenished to the highest limit set by the non-contact liquid level sensor, the non-contact liquid level sensor outputs a signal again to turn off the motor with a reducer. For threaded connectors of different lengths, it is only necessary to adjust the height of the glue in the U-shaped connecting tube and modify the upper and lower limits of the non-contact liquid level sensor.

[0011] Compared with the prior art, the beneficial effects of the present invention are: the present invention can automatically control the gluing position and amount of the threaded connector, and the control accuracy is high, and will not be left on other parts to cause movement jam of other parts; and it is easy to operate, saves time and effort, saves labor, and has high gluing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of the present invention; Figure 2 It is a left view of the present invention. DETAILED DESCRIPTION

[0013] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0014] like Figure 1 and Figure 2As shown, this embodiment includes a hollow base 9, a fixing plate 10 fixed on the hollow base 9, a U-shaped connecting pipe 8, a non-contact liquid level sensor 7, a connector I11 with a threaded connector through hole, a connector II6 with a U-shaped connecting pipe fixing hole, a needle-tube rubber cylinder 4, a cam 2, a motor 1 with a reducer and a fixing frame 13. Preferably, the non-contact liquid level sensor 7 is a separate photoelectric liquid level sensor, an ultrasonic liquid level sensor, a laser liquid level sensor and an infrared liquid level sensor. The U-shaped connecting pipe 8 is made of a transparent hose. The connector I11 is placed in the mounting holes opened on the hollow base 9 and the fixing plate 10, and the connector II6 is fixed on the fixing plate 10. One end of the U-shaped connecting pipe 8 is plugged and fixed to the lower end of the connector I11, and the other end passes through the through holes opened on the hollow base 9 and the fixing plate 10 and is plugged and fixed to the lower end of the connector II6. The fixing frame 13 is fixed on the hollow base 9, and the motor 1 with a reducer is fixed on the fixing frame 13 through the motor seat 14, and the cam 2 is fixed on the end of the motor shaft. The needle tube rubber cylinder 4 is fixed on the fixing frame 13 by the fixing chuck 5, and the rubber cylinder piston 3 at its upper end is directly opposite to the lower end of the cam 2, and its outlet is inserted into the port at the other end of the U-shaped connecting pipe 8; the non-contact liquid level sensor 7 is detachably sleeved and fixed on the upper end of the other end of the U-shaped connecting pipe 8 to detect the liquid level height of the U-shaped connecting pipe 8; the signal output end of the non-contact liquid level sensor is connected to the signal input end of the motor. The non-contact liquid level sensor 7 sets the upper and lower limits; when the liquid level of the U-shaped connecting tube 8 is at the upper limit of the non-contact liquid level sensor 7, the motor 1 does not move, and the threaded connector is placed in the through hole of the connector Ⅰ11 for glue coating; when the liquid level of the U-shaped connecting tube 8 is at the lower limit of the non-contact liquid level sensor 7, the non-contact liquid level sensor 7 sends a signal to control the motor 1 to move, and the cam 2 rotates. When the cam 2 is rotated and pressed onto the rubber cylinder piston 3, the needle-tube rubber cylinder 4 fills the U-shaped connecting tube 8 with glue. The cam 2 continues to rotate until the maximum diameter is at the lower end. The liquid level of the U-shaped connecting tube 8 is at the upper limit of the non-contact liquid level sensor 7 again. The non-contact liquid level sensor 7 sends a signal to control the motor 1 to rotate and delays until the cam 2 is separated from the rubber cylinder piston 3 to stop the action, and the needle-tube rubber cylinder 4 filled with glue is replaced.

[0015] Preferably, when no glue is added, the position of the cam 2 with the largest diameter is at the highest point, and when the position of the cam 2 with the largest diameter is at the lowest point, the liquid level of the U-shaped connecting tube 8 is at the highest limit of the non-contact liquid level sensor 7. The amount of glue flowing out of the needle-tube type glue cartridge 4 just makes up for the amount of glue missing from the U-shaped connecting tube 8.

[0016] When in use, the height of the glue in the U-shaped connecting tube 8 is determined according to the thickness of the hollow base 9 and the fixing plate 10 and the depth of the glue to be applied to the threaded head of the threaded connector 12, and the non-contact liquid level sensor 7 is adjusted to a certain height and fixed. At this time, the height of the glue in the U-shaped connecting tube 8 is at the highest limit set by the non-contact liquid level sensor 7, and the threaded connector 12 is placed in the threaded connector through hole of the connector head Ⅰ11, and the cap end of the threaded connector 12 is clamped on the connector head Ⅰ11, and then the threaded connector 12 can be taken out and the part to be coated with glue at the lower end of the threaded connector 12 can be coated. After applying multiple threaded connectors 12, the height of the glue in the U-shaped connecting tube 8 is reduced to the lowest limit set by the non-contact liquid level sensor 7. The non-contact liquid level sensor 7 outputs a signal to turn on the motor 1 with a reducer. The motor 1 with a reducer drives the cam 2 to rotate. The cam 2 is crimped on the rubber cylinder piston 3. The rubber cylinder piston 3 fills the U-shaped connecting tube 8 with glue to replenish the reduced glue in the U-shaped connecting tube 8. When the glue is replenished to the highest limit set by the non-contact liquid level sensor 7, the non-contact liquid level sensor 7 outputs a signal again to delay the closing of the motor 1 with a reducer. For threaded connectors 12 of different lengths, it is sufficient to adjust the height of the glue in the U-shaped connecting tube 8 and modify the highest and lowest limits of the non-contact liquid level sensor 7.

[0017] Of course, the present invention has many other embodiments. Without violating the spirit and essence of the present invention, technicians familiar with the field can make corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should be regarded as improvements of equivalent technologies and belong to the protection scope of the claims of the present invention.

Claims

1. A quantitative sealant coating device for a threaded connector, characterized in that: It includes a hollow base, a fixing plate fixed on the hollow base, a U-shaped connecting pipe, a non-contact liquid level sensor, a connector I with a threaded connector through hole, a connector II with a U-shaped connecting pipe fixing hole, a needle-tube rubber cylinder, a cam, a motor with a reducer and a fixing frame; the connector I is placed in the mounting holes on the hollow base and the fixing plate, and the connector II is fixed on the fixing plate; one end of the U-shaped connecting pipe is plugged and fixed to the lower end of the connector I, and the other end passes through the through holes on the hollow base and the fixing plate and is then plugged and fixed to the lower end of the connector II; the fixing frame is fixed on the hollow base, and the motor with a reducer is fixed to the fixing frame through the motor seat, and a cam is fixed to the end of the motor shaft; the needle-tube rubber cylinder is fixed to the fixing frame by a fixing chuck, and the rubber cylinder piston at its upper end faces the lower end of the cam, and its outlet protrudes into the port at the other end of the U-shaped connecting pipe; the non-contact liquid level sensor is detachably sleeved and fixed on The upper end of the other end of the U-shaped connecting tube detects the liquid level height of the U-shaped connecting tube; the signal output end of the non-contact liquid level sensor is connected to the signal input end of the motor; the non-contact liquid level sensor sets the upper limit and the lower limit; when the liquid level height of the U-shaped connecting tube is at the upper limit of the non-contact liquid level sensor, the motor does not move; when the liquid level height of the U-shaped connecting tube is at the lower limit of the non-contact liquid level sensor, the glue liquid can no longer meet the coating of the threaded connector, the non-contact liquid level sensor sends a signal to control the motor to move, the cam rotates, and when the cam rotates and is pressed onto the rubber cylinder piston, the needle-type rubber cylinder fills the U-shaped connecting tube with glue liquid, and the cam continues to rotate until the maximum diameter is at the lower end, and the liquid level height of the U-shaped connecting tube is at the upper limit of the non-contact liquid level sensor again, and the non-contact liquid level sensor sends a signal to control the motor to rotate and delays until the cam is separated from the rubber cylinder piston to stop the action.

2. The sealant quantitative coating device for threaded connectors according to claim 1, characterized in that: The non-contact liquid level sensor is a separate photoelectric liquid level sensor, an ultrasonic liquid level sensor, a laser liquid level sensor and an infrared liquid level sensor.

3. The sealant quantitative coating device for threaded connectors according to claim 1 or 2, characterized in that: When no glue is added, the position where the cam has the largest diameter is at the highest point; when the position where the cam has the largest diameter is at the lowest point, the liquid level height of the U-shaped connecting pipe is at the highest limit of the non-contact liquid level sensor.

4. The sealant quantitative coating device for threaded connectors according to claim 3, characterized in that: The U-shaped connecting pipe is made of a transparent hose.

5. The sealant quantitative coating device for threaded connectors according to claim 1 or 2, characterized in that: The U-shaped connecting pipe is made of a transparent hose.

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