Glue injection valve

Abstract

The present application relates to a kind of glue valve, including valve body, storage assembly and valve seat, valve seat is provided with flow passage, valve body is connected with storage assembly by flow passage, storage assembly includes glue storage, connecting head, locking cover and air inlet assembly, air inlet assembly includes seat body, sealing element and elastic bolt, seat body has air inlet end and air outlet end, sealing element is arranged in air outlet end, and elastic bolt is arranged in sealing element;Locking cover is provided with air passage, one end of air passage is opposite air outlet end, locking cover can be moved to be close to or away from elastic bolt, when locking cover is close to and extrudes elastic bolt, air inlet end, air outlet end and air passage are communicated;When locking cover is away from elastic bolt, elastic bolt is abutted with sealing element and blocks air outlet end.The present application can automatically close air path when glue storage is disassembled, isolate the connection between air path and hot melt glue liquid, avoid the splashing of melted glue liquid under the action of high pressure gas, better protect the operator, improve the safety of glue valve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glue spraying valve, in particular to a glue spraying valve. BACKGROUND

[0002] The glue spraying valve needs to be supplied with pressure by compressed gas, and the existing air inlet structure of the glue spraying valve is usually directly communicated with the glue storage part. In order to ensure the safety of replacing the glue pipe or cleaning the glue valve, an air path switch needs to be additionally arranged on the pipeline connected with the air inlet pipe. On the one hand, the cost is increased, and on the other hand, the air path switch is manually operated, and it is easy to forget to close the air path and directly disassemble the sealing cover, which may cause damage to the personnel and equipment and has safety hazards. SUMMARY

[0003] The purpose of the present application is to provide a glue spraying valve which can automatically close the air path when the glue storage part is disassembled, isolate the connection between the air path and the hot molten glue, avoid the splashing of the molten glue under the action of high-pressure gas, better protect the operator, and improve the safety of the glue spraying valve.

[0004] A glue spraying valve comprises a valve body, a storage assembly, and a valve seat, wherein the valve seat is provided with a flow channel, the valve body is connected with the storage assembly through the flow channel, and the storage assembly comprises a glue storage part, a connecting head which is detachably connected to one end of the glue storage part, a locking cover which is sleeved on the outer periphery of the connecting head and is configured to be movable along the height direction of the glue storage part, and an air inlet assembly which comprises a seat body, a sealing part, and an elastic latch, wherein the seat body has an air inlet end and an air outlet end, the sealing part is arranged at the air outlet end, and the elastic latch is arranged through the sealing part and is configured to be movable along the height direction of the glue storage part; wherein the locking cover is provided with an air path, one end of the air path is opposite to the air outlet end, the locking cover is movable to approach or move away from the elastic latch, the air inlet end, the air outlet end, and the air path are communicated when the locking cover approaches and presses the elastic latch, and the elastic latch abuts against the sealing part and blocks the air outlet end when the locking cover moves away from the elastic latch.

[0005] In the above technical solution, the sealing part and the elastic latch are arranged at the air inlet end and the air outlet end, the locking cover can press the elastic latch when the locking cover and the glue storage part are installed in place, so as to communicate the air inlet end, the air outlet end, and the air path, and to realize the air supply to the glue storage part. When the glue spraying valve needs to be disassembled or cleaned, the connecting head is first separated from the glue storage part, at this time, the locking cover is separated from the elastic latch, the elastic latch abuts against the sealing part under the action of its own elastic force, so as to close the air path, isolate the connection between the air path and the hot molten glue, avoid the splashing of the molten glue under the action of high-pressure gas, better protect the operator, improve the safety of the glue spraying valve, and reduce the flow loss of the high-pressure air in the factory and the load of the air compressor.

[0006] Further, the elastic plug pin includes a pin body, a connecting rod, and an elastic member, the pin body has an outwardly protruding flange, the connecting rod is arranged in the seat body, and the elastic member is arranged on the connecting rod.

[0007] In the above technical solution, the pin body is kept in a direction towards the sealing member by the elastic force of the elastic member, and when the pressure of the locking cap on the elastic plug pin is removed, the pin body can abut against the sealing member through the flange, so as to close the air passage.

[0008] Further, the outer periphery of the locking cap is sleeved with a rotating cap, the rotating cap is threadedly connected with the locking cap, and the rotating cap can be rotated to drive the locking cap to move along the height direction of the glue storage member.

[0009] In the above technical solution, the rotating cap can be rotated to drive the locking cap to move, so as to facilitate the installation and disassembly of the locking cap and the connector.

[0010] Further, the glue storage assembly further includes at least one anti-rotation column, the anti-rotation column extends along the height direction of the glue storage member, the anti-rotation column is arranged in the locking cap, and the anti-rotation column is used to limit the rotation of the locking cap along the circumferential direction thereof.

[0011] In the above technical solution, the anti-rotation column can limit the rotation of the locking cap along the circumferential direction thereof, so as to ensure the stability of the moving direction of the locking cap and ensure the relative position of the air passage and the air outlet.

[0012] Further, the air passage and the axial direction of the locking cap form an included angle.

[0013] In the above technical solution, the air passage is inclined, so as to guide the compressed air from the air inlet assembly to the inside of the locking cap, and then guide the air into the glue storage member.

[0014] Further, the air inlet end is provided with a detachable connector.

[0015] In the above technical solution, the connector is detachably arranged, so as to quickly connect the air supply device and facilitate the replacement and maintenance.

[0016] Further, one end of the valve body close to the valve seat is provided with a nozzle, the valve body is provided with a striker assembly and an adjusting assembly, the adjusting assembly is connected with the striker assembly, and the adjusting assembly can drive the striker assembly to move close to or away from the nozzle.

[0017] In the above technical solution, the adjusting assembly can drive the striker assembly to move, so as to adjust the position of the striker assembly and then adjust the glue spraying parameters of the glue spraying valve.

[0018] Further, the adjusting assembly comprises an adjusting knob, a worm, and a transmission member, the adjusting knob is connected with the worm, the transmission member is provided with a worm wheel on the outer periphery, the worm wheel is connected with the worm, and the other end of the transmission member is threadedly connected with the striker assembly.

[0019] In the above technical solution, the worm and the worm wheel are matched, the adjustment precision of the adjusting assembly can be improved through the speed reduction ratio of the worm and the worm wheel, the transmission member drives the striker assembly to move up and down through the thread, so that the glue spraying parameter of the glue spraying valve is adjusted. In specific implementation, the thread through which the transmission member is connected with the striker assembly can be a coarse thread, so as to improve the strength of the thread,

[0020] Further, the valve seat comprises a base plate, a cover plate, and a mounting block, the base plate and the cover plate are oppositely arranged, the flow channel is located between the base plate and the cover plate, and the mounting block is provided with a connecting channel, so that the base plate and the cover plate can be connected with the mounting block to make the flow channel and the connecting channel communicate.

[0021] In the above technical solution, the mounting block communicates with the flow channel through the connecting channel, when the base plate and the cover plate are disassembled, the situation in the connecting channel can be directly observed, the cleanability of the flow channel is effectively ensured, and the nozzle is prevented from being blocked.

[0022] Further, sealing pads are arranged between the base plate, the cover plate, and the mounting block.

[0023] In the above technical solution, the sealing pads can ensure the sealing of the connection between the flow channel and the connecting channel, and improve the glue spraying effect.

[0024] Compared with the prior art, the beneficial effects of the present application are as follows: by arranging the sealing member and the elastic pin at the air inlet end and the air outlet end, when the locking cover and the glue storage member are installed in place, the locking cover can extrude the elastic pin, so that the air inlet end, the air outlet end, and the air passage are communicated, and the air supply to the glue storage member is realized. When it is necessary to disassemble or clean the glue spraying valve, the connecting head is first separated from the glue storage member, at this time, the locking cover is separated from the elastic pin, the elastic pin is abutted against the sealing member under the action of the elastic force of the elastic pin, so that the air passage is closed, the connection between the air passage and the hot-melt glue liquid is isolated, the splashing of the melted glue liquid under the action of high-pressure gas is avoided, the operator is better protected, the safety of the glue spraying valve is improved, and the automatic closing of the air passage can reduce the flow loss of the high-pressure air in the factory and reduce the load of the air compressor. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 FIG. 1 is a structural schematic diagram of a glue spraying valve according to an embodiment of the present application.

[0026] Figure 2 FIG. 2 is a structural schematic diagram of a glue storage assembly according to an embodiment of the present application.

[0027] Figure 3Partial structure diagram of the storage assembly of the embodiment of the present application.

[0028] Figure 4 Structure diagram of the elastic latch of the embodiment of the present application.

[0029] Figure 5 Structure diagram of the adjusting assembly of the embodiment of the present application.

[0030] Figure 6 Structure diagram of the connection between the adjusting assembly and the striker assembly of the embodiment of the present application.

[0031] Figure 7 Structure diagram of the valve seat of the embodiment of the present application.

[0032] Brief Description of the Drawings

[0033] Valve body 1, nozzle 11, striker assembly 12, sleeve 121, adjusting assembly 13, adjusting knob 131, worm 132, transmission member 133, worm wheel 1331, positioning block 14, locking nut 15, storage assembly 2, glue storage member 21, connecting head 22, locking cover 23, air passage 231, air inlet assembly 24, seat body 241, sealing member 242, elastic latch 243, pin body 2431, connecting rod 2432, elastic member 2433, boss 2434, luer 25, rotating cover 26, anti-rotation column 27, joint 28, valve seat 3, flow passage 31, base plate 32, cover plate 33, mounting block 34, sealing gasket 35. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described herein.

[0035] Reference will now be made to Figures 1 to 3 In a preferred embodiment, the glue spraying valve of the present application mainly comprises a valve body 1, a storage assembly 2, and a valve seat 3. The valve seat 3 is provided with a flow passage 31, and the valve body 1 and the storage assembly 2 are connected through the flow passage 31.

[0036] The storage assembly 2 comprises a glue storage 21, a connecting head 22, a locking cover 23, and an air inlet assembly 24. The glue storage 21 is used for placing hot melt glue, and a luer 25 is arranged in the glue storage 21. The glue storage 21 is connected with the valve seat 3 at the outlet end. The connecting head 22 is detachably connected with the inlet end of the glue storage 21. The connecting head 22 has a through hole, which can communicate the inside of the glue storage 21 with the outside. The locking cover 23 is sleeved on the outer periphery of the connecting head 22, and the locking cover 23 is arranged to be movable along the height direction of the glue storage 21. The air inlet assembly 24 is arranged adjacent to the glue storage 21. The air inlet assembly 24 comprises a seat body 241, a sealing member 242, and an elastic latch 243. The seat body 241 has an air inlet end and an air outlet end. The sealing member 242 is arranged at the air outlet end. The elastic latch 243 is arranged to be movable along the height direction of the glue storage 21. The locking cover 23 is provided with an air passage 231. In this embodiment, the air passage 231 has an included angle with the axial direction of the locking cover 23. The air passage 231 is arranged to be inclined, so that the compressed air can be guided from the air inlet assembly 24 to the inside of the locking cover, and then the air can be guided into the glue storage 21. One end of the air passage 231 is opposite to the air outlet end, and the other end penetrates the side wall of the locking cover 23 and communicates with one end of the connecting head 22. The locking cover 23 is movable to approach or move away from the elastic latch 243. When the locking cover 23 approaches and presses the elastic latch 243, the air inlet end, the air outlet end, and the air passage 231 are communicated. When the locking cover 23 moves away from the elastic latch 243, the elastic latch 243 abuts against the sealing member 242 and blocks the air outlet end.

[0037] By arranging the sealing member 242 and the elastic latch 243 at the air inlet end and the air outlet end, when the locking cover 23 and the glue storage 21 are installed in place, the locking cover 23 can press the elastic latch 243, so that the air inlet end, the air outlet end, and the air passage 231 are communicated, and the air supply to the glue storage 21 is realized. When the glue spraying valve needs to be disassembled or cleaned, the connecting head 22 is first separated from the glue storage 21. At this time, the locking cover 23 is separated from the elastic latch 243. The elastic latch 243 abuts against the sealing member 242 under the action of its own elastic force, so as to close the air passage and isolate the connection between the air passage and the hot melt glue liquid, thereby avoiding the splashing of the melted glue liquid under the action of high-pressure gas, better protecting the operator, improving the safety of the glue spraying valve, and reducing the flow loss of the high-pressure air in the factory and the load of the air compressor.

[0038] Please refer to Figure 4The resilient pin 243 includes a pin body 2431, a connecting rod 2432, and an elastic element 2433. The outer periphery of the pin body 2431 protrudes outward to form a boss 2434. The connecting rod 2432 passes through the seat body 241, and the elastic element 2433 is sleeved on the outer periphery of the connecting rod 2432. Specifically, the boss 2434 is formed as an annular ring, and its diameter is larger than the diameter of the through hole of the sealing element 242. The elastic element 2433 can be a spring. The pin body 2431 maintains a restoring force toward the sealing element 242 through the elastic force of the elastic element 2433. When the pressure of the locking cover on the resilient pin 243 is removed, the pin body 2431 can abut against the sealing element 242 through the boss 2434, thereby closing the air passage 231.

[0039] Please refer to this again. Figure 3 A rotating cover 26 is fitted around the outer periphery of the locking cover 23. The rotating cover 26 is threadedly connected to the locking cover 23. The rotating cover 26 can rotate to drive the locking cover 23 to move along the height direction of the glue storage part 21. The rotating cover 26 can rotate, thereby driving the locking cover 23 to move, which facilitates the installation and removal of the locking cover 23 and the connector 22.

[0040] The material storage assembly 2 also includes at least one anti-rotation post 27, which extends along the height direction of the adhesive storage component 21 and passes through the locking cover 23. The anti-rotation post 27 is used to restrict the locking cover 23 from rotating circumferentially. In this embodiment, there are two anti-rotation posts 27, which are respectively located on both sides of the locking cover 23. The anti-rotation posts 27 can restrict the locking cover 23 from rotating circumferentially, thereby ensuring the stability of the moving direction of the locking cover 23, while ensuring that the air passage 231 is opposite to the air outlet.

[0041] In this embodiment, the air inlet end is provided with a detachable connector 28. The connector 28 is detachable, which can quickly connect to the air supply device and is convenient for replacement and maintenance.

[0042] Please refer to Figure 5 and Figure 6 A nozzle 11 is provided at one end of the valve body 1 near the valve seat 3. A striking pin assembly 12 and an adjusting assembly 13 are provided inside the valve body 1. The adjusting assembly 13 is connected to the striking pin assembly 12 and can drive the striking pin assembly 12 to move closer to or further away from the nozzle 11. The adjusting assembly 13 can drive the striking pin assembly 12 to move, thereby adjusting the position of the striking pin assembly 12 and thus adjusting the glue spraying parameters of the glue spraying valve.

[0043] Specifically, the adjusting assembly 13 comprises an adjusting knob 131, a worm 132, and a transmission member 133. The adjusting knob 131 is rotatably arranged on the outer surface of the valve body 1, the adjusting knob 131 is connected with the worm 132, the outer periphery of the transmission member 133 is provided with a worm wheel 1331, the worm wheel 1331 is connected with the worm 132, and the other end of the transmission member 133 is threadedly connected with the striker assembly 12. In the embodiment, the valve body 1 is provided with a positioning block 14 and a locking nut 15, and one end of the transmission member 133 is rotatably connected in the valve body 1 through the positioning block 14 and the locking nut 15. The striker assembly 12 is provided with a sleeve 121, and the sleeve 121 is threadedly connected with the transmission member 133. The worm and the worm wheel 132 are matched, and the adjustment accuracy of the adjusting assembly 13 can be improved through the speed reduction ratio of the two, and the transmission member 133 drives the striker assembly 12 to move up and down through the thread, so as to adjust the glue spraying parameters of the glue spraying valve. In specific implementation, the thread through which the transmission member 133 is connected with the striker assembly 12 can be a coarse thread, so as to improve the strength of the thread,

[0044] Please refer to Figure 7 The valve seat 3 comprises a base plate 32, a cover plate 33, and a mounting block 34, the base plate 32 and the cover plate 33 are oppositely arranged, the flow channel 31 is located between the base plate 32 and the cover plate 33, and the mounting block 34 has a connecting channel. The base plate 32 and the cover plate 33 can be connected with the mounting block 34, so that the flow channel 31 is in communication with the connecting channel. The mounting block 34 is in communication with the flow channel 31 through the connecting channel, the situation in the connecting channel can be directly observed after the base plate 32 and the cover plate 33 are disassembled, the cleanability of the flow channel 31 is ensured, and the nozzle 11 is prevented from being blocked.

[0045] In the embodiment, a sealing gasket 35 is arranged between the base plate 32, the cover plate 33, and the mounting block 34. The sealing gasket 35 can ensure the sealing of the connection between the flow channel 31 and the connecting channel, and improve the glue spraying effect.

[0046] In the description of the present application, it should be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0047] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0048] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be made without departing from the spirit and scope of the present application, which is defined by the following claims and their equivalents.

Claims

1. A glue valve characterized by, The valve body, the storage assembly, and the valve seat are provided with a flow channel, the valve body is connected with the storage assembly through the flow channel, and the storage assembly comprises: a glue storage member; a connecting head which is detachably connected to one end of the glue storage member; a locking cap which is sleeved on the outer periphery of the connecting head and is configured to be movable along the height direction of the glue storage member; and an air inlet assembly which comprises a seat body, a sealing member, and an elastic pin, the seat body has an air inlet end and an air outlet end, the sealing member is arranged at the air outlet end, and the elastic pin is arranged through the sealing member and is configured to be movable along the height direction of the glue storage member; wherein the locking cap is provided with an air channel, one end of the air channel is opposite to the air outlet end, the locking cap is movable to approach or move away from the elastic pin, when the locking cap approaches and presses the elastic pin, the air inlet end, the air outlet end, and the air channel are communicated, and when the locking cap moves away from the elastic pin, the elastic pin abuts against the sealing member and blocks the air outlet end.

2. The glue jet valve according to claim 1, characterized in that The elastic pin comprises a pin body, a connecting rod, and an elastic member, the outer periphery of the pin body is outwardly protruded to form a boss, the connecting rod is arranged through the seat body, and the elastic member is sleeved on the outer periphery of the connecting rod.

3. The glue jet valve according to claim 1, wherein The outer periphery of the locking cap is sleeved with a rotating cap, the rotating cap is threadedly connected with the locking cap, and the rotating cap is rotatable to drive the locking cap to move along the height direction of the glue storage member.

4. The glue jet valve of claim 1, wherein The storage assembly further comprises at least one anti-rotation column which extends along the height direction of the glue storage member, the anti-rotation column is arranged through the locking cap, and the anti-rotation column is used to limit the circumferential rotation of the locking cap.

5. The glue jet valve of claim 1, wherein The air channel and the axial direction of the locking cap form an included angle.

6. The glue jet valve of claim 1, wherein The air inlet end is provided with a detachable connector.

7. The glue jet valve of claim 1, wherein The valve body is provided with a nozzle at one end close to the valve seat, the valve body is internally provided with a striker assembly and an adjusting assembly, the adjusting assembly is connected with the striker assembly, and the adjusting assembly can drive the striker assembly to approach or move away from the nozzle.

8. The glue jet valve according to claim 7, characterized in that The adjusting assembly comprises an adjusting knob, a worm, and a transmission member, the adjusting knob is connected with the worm, the outer periphery of the transmission member is provided with a worm wheel, the worm wheel is connected with the worm, and the other end of the transmission member is threadedly connected with the striker assembly.

9. The glue jet valve of claim 1, wherein The valve seat comprises a base plate, a cover plate, and a mounting block, the base plate and the cover plate are oppositely arranged, the flow channel is located between the base plate and the cover plate, the mounting block is provided with a connecting channel, and the base plate and the cover plate can be connected with the mounting block to make the flow channel and the connecting channel communicated.

10. The glue jet valve according to claim 9, wherein Sealing gaskets are arranged between the base plate, the cover plate, and the mounting block.

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