Pressure-controlled sealing water valve cleaning mechanism applied to gluing head

Abstract

The utility model provides a pressure-controlled sealing water valve cleaning mechanism applied to a gluing head, which can be fully sealed to prevent glue from backflow and reverse osmosis during gluing, can be quickly opened to allow a solvent to pass through during cleaning, and is provided with a multi-stage sealing mechanism to effectively prevent solvent leakage and glue reverse osmosis. Comprising a hollow water valve body, and a side hole is formed in the side wall of the water valve body and used for introducing a high-pressure solvent; a water valve head made of a non-metal material is mounted at the front end of the water valve body, so that the water valve head and the gluing head are mounted in a matched manner, and a through hole is formed in the water valve head to communicate the water valve body with the gluing head; the water valve end socket is installed at the rear end of the water valve body, the quick connector is installed at the rear end of the water valve end socket and communicated with compressed air, and a medium inlet communicated with the water valve body and the quick connector is formed in the water valve end socket. The water valve element is arranged in the water valve body in a sliding mode, located between the water valve end socket and the water valve head and used for being inserted into or pulled out of the through hole of the water valve head to achieve blocking or releasing of the through hole, and a multi-stage sealing mechanism is arranged on the outer wall of the water valve element.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the precise equipment maintenance technical field relates to the cleaning technology of the gluing head, concretely is a kind of pressure-controlled sealing water valve cleaning mechanism applied to gluing head. BACKGROUND

[0002] With the continuous upgrading of domestic manufacturing industry and the advancement of intelligent process, the sealing gluing equipment market maintains steady growth. Body sealing gluing is a very important link in the process of automobile welding, painting and assembly, and gluing can not only improve the sealing and waterproof performance and NVH performance of the vehicle, but also plays an important role in realizing automobile lightweight, energy saving and consumption reduction. Gluing head is an important mechanism component on gluing equipment, and sealing gluing equipment ensures the quality of gluing through the gluing head. The gluing head is easy to be blocked or contaminated by residual glue after work, which affects the gluing precision and product quality. Therefore, a water valve cleaning mechanism is provided on the gluing head to maintain its working performance by flushing the residual glue with high-pressure solvent.

[0003] The traditional gluing head water valve cleaning mechanism adopts mechanical drive or complex pipeline switching mode to realize the on-off control of cleaning medium, which has the problems of complex structure, insufficient sealing reliability, etc., and is easy to cause glue or solvent leakage, affecting the use of equipment. For example, the Chinese patent with publication number CN205289142U relates to a gluing machine management cleaning device, which includes a cylinder, a cleaning valve body, a cleaning flow guide block, a valve core, an end cover, a pad seat and a needle seal pad. The cylinder is connected with the valve core to realize pipeline switching, and two independent cleaning assemblies are used to perform blowing and flushing operations respectively. Although this scheme can complete the basic cleaning function, it still has the following disadvantages: 1. multiple components such as cylinder, threaded elbow, sealing adjustment wire and flow guide block are needed to be connected, which has complex structure and high assembly and maintenance cost; 2. the valve core and the cleaning flow guide block are in rigid contact, the contact area is small, and there is no other sealing measure, which has the problem of insufficient sealing reliability that glue may flow back into the cleaning mechanism during gluing. UTILITY MODEL CONTENTS

[0004] In order to overcome the problems of complex structure and easy glue or solvent leakage of the existing water valve cleaning mechanism, the utility model provides a pressure-controlled sealing water valve cleaning mechanism applied to gluing head, which can be fully sealed to prevent glue from flowing back and seeping during gluing, quickly opened to allow solvent to pass during cleaning, and multiple sealing mechanisms are provided to realize multi-stage dynamic sealing under high-pressure working condition, effectively preventing solvent or glue from leaking.

[0005] The technical scheme adopted by the utility model to solve the technical problems is as follows:

[0006] A pressure-controlled sealing water valve cleaning mechanism applied to a glue applying head, comprising a hollow water valve body, a side hole is arranged on the side wall of the water valve body for connecting the inside for passing in high-pressure solvent; a water valve head made of non-metallic material is installed at the front end of the water valve body, used for being installed in cooperation with the glue applying head through the water valve head, a through hole is arranged on the water valve head for connecting the water valve body and the glue applying head; a water valve head cover is installed at the rear end of the water valve body, a quick plug connector is installed at the rear end of the water valve head cover and connected with compressed air, a medium inlet is arranged on the water valve head cover for connecting the water valve body and the quick plug connector; a water valve spool is slidably arranged in the water valve body and located between the water valve head cover and the water valve head, used for inserting or pulling out the through hole of the water valve head to realize the plugging or releasing of the through hole, and a plurality of sealing mechanisms are arranged on the outer wall of the water valve spool.

[0007] Further, the plurality of sealing mechanisms comprise a tetrafluoro ring, a first star-shaped seal and a second star-shaped seal respectively embedded on the outer wall of the water valve spool, used for sealing between the outer wall of the water valve spool and the inner wall of the water valve body.

[0008] Further, the water valve head cover is inserted into the inside of the rear end of the water valve body, and a first O-shaped ring is embedded on the outer wall of the water valve head cover, used for sealing between the outer wall of the water valve head cover and the inner wall of the water valve body.

[0009] Further, the water valve head cover and the water valve body are fixedly connected through a jackscrew.

[0010] Further, a second O-shaped ring is arranged on the outer wall of the water valve head, used for sealing between the outer wall of the water valve head and the glue applying head.

[0011] Further, a third O-shaped ring is arranged on the outer wall of the water valve body, used for sealing between the outer wall of the water valve body and other peripheral cooperating equipment.

[0012] Further, a first boss, a second boss and a third boss are respectively arranged on the water valve spool, the first boss is clamped with the rear end surface of the water valve head when the first boss is completely inserted into the through hole of the water valve head at the front end of the water valve spool, the second boss is located at the rear end of the side hole, and the third boss is clamped with the step surface arranged on the inner wall of the water valve body when the water valve spool moves to the front end.

[0013] Further, a double-channel recessed pressure guide groove is arranged at the tail end of the water valve spool, and the pressure guide groove is connected with the medium inlet of the water valve head cover.

[0014] The beneficial effects of the utility model include:

[0015] The pressure control driving is adopted to replace the traditional cylinder and complex linkage components, the water valve core is automatically opened and closed through the pressure difference between compressed air and high pressure solvent, the external mechanical driving device is omitted, and the assembly difficulty and maintenance cost are significantly reduced. The water valve core is driven by the rear compressed air pressure to tightly close the water valve head through hole in the glue coating state, the non-metallic water valve head and the water valve core are inserted and matched to form the main sealing interface, the contact between the two insertion forms has larger sealing area, the water valve head adopts non-metallic material, the non-metallic material is soft, the compressibility is better, the water valve core is inserted and contacted with the water valve head, and good sealing effect is achieved, and then the glue liquid backflow path can be effectively blocked in the glue coating. The compressed air is disconnected, the high pressure solvent enters the side hole and pushes away the water valve core, the process switching has no delay, and the cleaning efficiency is improved. And the multistage sealing mechanism composed of the tetrafluoro ring, the first star type seal and the second star type seal arranged on the outer wall of the water valve core realizes the multistage dynamic sealing barrier under the high pressure working condition, further effectively prevents the solvent leakage and glue reverse infiltration, the O-shaped ring static seal of the water valve head and the water valve head is combined, and the glue liquid backflow and solvent leakage path is completely blocked, and the cleaning environment is especially suitable for high quality sealing glue coating and potting glue equipment and other high sealing requirements. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall external structure of the application;

[0017] Figure 2 is a schematic diagram of the overall cross-sectional structure of the application.

[0018] In the figure: 1, water valve core; 2, water valve head; 3, tetrafluoro ring; 4, first star type seal; 5, first O-shaped ring; 6, second star type seal; 7, quick connector; 8, top screw; 9, water valve body; 10, second O-shaped ring; 11, water valve head; 12, third O-shaped ring;

[0019] 101, first boss; 102, second boss; 103, third boss, 104, pressure guide groove; 901, side hole. DETAILED DESCRIPTION

[0020] The technical scheme of the application will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the application.

[0021] In the description of the utility model, it is necessary to explain that the terms "front", "back", "inner", "outer" and the like indicate the position or location relationship based on the position or location relationship shown in the drawing, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the indicated device or component must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only used to distinguish components, and cannot be understood as indicating or implying relative importance.

[0022] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict between them.

[0023] Embodiment 1: The pressure control sealing water valve cleaning mechanism applied to the glue applying head comprises the following components: a water valve spool 1, a water valve head 2, a tetrafluoro ring 3, a first star-shaped seal 4, a first O-shaped ring 5, a second star-shaped seal 6, a quick connector 7, a jackscrew 8, a water valve body 9, a second O-shaped ring 10, a water valve head 11 and a third O-shaped ring 12.

[0024] Reference Figure 2 The water valve head 11 is installed to the front end of the water valve body 9; the tetrafluoro ring 3, the first star-shaped seal 4 and the second star-shaped seal 6 are installed to the outer wall of the water valve spool 1, assembled into a water valve spool assembly, and then the water valve spool assembly is assembled to the inside of the water valve body 9; the first O-shaped ring 5 and the quick connector 7 are installed to the water valve head 2, assembled into a water valve head assembly, and then the water valve head assembly is installed to the rear end of the water valve body 9, and then the water valve body 9 and the water valve head 2 are fixedly connected into one body through the jackscrew 8; finally, the second O-shaped ring 10 and the O-shaped ring 5 are installed to the outer wall of the water valve head 11, and the third O-shaped ring 12 is installed to the outer wall of the water valve body 9, so that the pressure control sealing water valve cleaning mechanism is assembled, the water valve head 11 can be installed to the glue applying head for use. The pressure control sealing water valve cleaning mechanism adopts a split structure design, the water valve spool assembly, the water valve head assembly and the valve body are quickly assembled, each sealing unit is independently installed, the disassembly and assembly complexity is greatly reduced, and the local sealing piece replacement and maintenance are facilitated.

[0025] The overall working principle of the utility model is: after the pressure control sealing water valve cleaning mechanism is installed to the glue applying head, the compressed air is passed into the water valve body 9 through the quick connector 7, the water valve core 1 is moved to the front end of the water valve body 9 and is inserted into the through hole of the water valve head 11 under the pressure of the compressed air, the two are compressed and sealed to close the pressure control sealing water valve cleaning mechanism, therefore, when the glue applying head applies glue, the glue cannot be reversely infiltrated into the inside of the water valve body 9. When the quick connector 7 stops passing the compressed air into the water valve body 9, the high pressure solvent is passed into the inside of the water valve body 9 through the side hole 901 of the side wall of the water valve body 9, the water valve core 1 is moved to the rear end of the water valve body 9 under the push of the high pressure solvent, at this time, the water valve core 1 is separated from the through hole of the water valve head 11, the pressure control sealing water valve cleaning mechanism is opened, the high pressure solvent enters the glue applying head through the through hole on the water valve head 11 and cleans the glue applying head.

[0026] Preferably, the water valve head 11 is made of polytetrafluoroethylene or POM, which is a non-metal material. The non-metal material is soft and has better compressibility, so that when the water valve core 1 is inserted into the water valve head 11, better sealing effect can be achieved.

[0027] In the embodiment 1, the structure of the water valve core 1 is specifically described.

[0028] Reference Figure 2 The water valve core 1 is provided with a first boss 101, a second boss 102 and a third boss 103. The first boss 101 is used for clamping the rear end surface of the water valve head 11 when the water valve core 1 is completely inserted into the through hole of the water valve head 11, so as to limit the insertion distance of the water valve core 1. The second boss 102 is located at the rear end position of the side hole 901 and is used for providing a force point for the high pressure solvent to push the water valve core 1 backward when the high pressure solvent is passed into the inside of the water valve body 9 through the side hole 901, so that the moving response speed of the water valve core 1 is faster. The third boss 103 is used for clamping the step surface arranged on the inner wall of the water valve body 9 when the water valve core 1 moves to the front end, so as to limit the maximum moving distance of the water valve core 1 to the front end. The two limiting of the first boss 101 and the third boss 103 makes the movement of the water valve core 1 more reliable and safe.

[0029] The water valve core 1 is provided with a double-channel concave pressure guide groove 104 at the tail end. The pressure guide groove 104 is connected with the medium inlet of the water valve head 2. Since the pressure guide groove 104 extends inwardly, a pressure chamber is formed when the compressed air is passed in, so that the axial driving force can be conducted to the inside of the water valve core 1 through the pressure guide groove 104, the water valve core 1 is pushed to the front end in place faster, the pressure conduction efficiency is improved, and the symmetrical layout of the double channels ensures that the driving force is uniformly distributed.

[0030] Obviously, the above embodiments are merely example for clearly illustrating but not limitation to the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments need not and can not be enumerated. The obvious changes or variations derived from the above description are still within the protection scope of the present application.

Claims

1. A pressure-controlled sealant water valve cleaning mechanism applied to a glue head, characterized in that, The water valve body (9) is internally hollow, and a side hole (901) is arranged on the side wall of the water valve body (9) and communicates with the inside, and is used for entering high-pressure solvent; a water valve head (11) made of non-metallic material is arranged at the front end of the water valve body (9), and is used for being cooperatively arranged with a glue applying head through the water valve head (11), a through hole is arranged on the water valve head (11), and the through hole is used for connecting the water valve body (9) and the glue applying head; a water valve head cover (2) is arranged at the rear end of the water valve body (9), a quick connector (7) is arranged at the rear end of the water valve head cover (2) and is connected with compressed air, a medium inlet is arranged on the water valve head cover (2) and is used for connecting the water valve body (9) and the quick connector (7); a water valve core (1) is slidably arranged in the water valve body (9) and is located between the water valve head cover (2) and the water valve head (11), is used for being inserted into or separated from the through hole of the water valve head (11) to realize plugging or releasing of the through hole, and a plurality of sealing mechanisms are arranged on the outer wall of the water valve core (1).

2. The pressure-controlled seal water valve washing mechanism for a gluing head according to claim 1, characterized in that, The plurality of sealing mechanisms comprise a tetrafluoro ring (3), a first star-shaped seal (4) and a second star-shaped seal (6) which are respectively embedded on the outer wall of the water valve core (1) and are used for sealing between the outer wall of the water valve core (1) and the inner wall of the water valve body (9).

3. The pressure-controlled seal water valve washing mechanism for a gluing head according to claim 2, characterized in that, The water valve head cover (2) is inserted into the rear end of the water valve body (9), and a first O-shaped ring (5) is embedded on the outer wall of the water valve head cover (2) and is used for sealing between the outer wall of the water valve head cover (2) and the inner wall of the water valve body (9).

4. The pressure-controlled seal water valve washing mechanism for a gluing head according to claim 3, characterized in that, The water valve head cover (2) and the water valve body (9) are fixedly connected through a jackscrew (8).

5. The pressure-controlled seal water valve washing mechanism applied to a gluing head according to claim 3, characterized in that, A second O-shaped ring (10) is arranged on the outer wall of the water valve head (11) and is used for sealing between the outer wall of the water valve head (11) and the glue applying head.

6. The pressure-controlled seal water valve washing mechanism for a gluing head according to claim 5, characterized in that, A third O-shaped ring (12) is arranged on the outer wall of the water valve body (9) and is used for sealing between the outer wall of the water valve body (9) and other peripheral cooperating equipment.

7. The pressure-controlled seal water valve washing mechanism applied to a gluing head according to claim 2, characterized in that, First, second and third bosses (101, 102 and 103) are respectively arranged on the water valve core (1), the first boss (101) is clamped with the rear end surface of the water valve head (11) when the first boss (101) is completely inserted into the through hole of the water valve head (11) at the front end of the water valve core (1), the second boss (102) is located at the rear end of the side hole (901), and the third boss (103) is clamped with a stepped surface arranged on the inner wall of the water valve body (9) when the water valve core (1) is moved to the front end.

8. The pressure-controlled seal water valve washing mechanism for a gluing head according to claim 7, characterized in that, A double-channel concave pressure guide groove (104) is arranged at the tail end of the water valve core (1), and the pressure guide groove (104) is connected with the medium inlet of the water valve head cover (2).

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