Dispensing valve

Abstract

The utility model relates to a dispensing valve, which comprises a base, a glue outlet component, an action component and a glue blowing component, the base is used as a bearing body, the glue outlet component is arranged on the bearing body, the glue outlet component is provided with a glue outlet channel for glue to flow, the glue outlet component comprises a dispensing needle head, the dispensing needle head is used as a glue outlet of the glue outlet channel, and the action component comprises a pressure head. The pressure head can be operated to extrude the glue outlet channel, so that the glue outlet channel is compressed and deformed, and the flowing of glue in the glue outlet channel can be blocked; the glue blowing assembly is provided with an air channel for compressed air to flow, and the air channel communicates with the glue outlet channel. The glue outlet channel is pressed by the pressing head to cut off the glue, the pressing head is released to release the glue, the glue is uniformly distributed in the comb tooth holes in a blowing-out mode of the glue blowing assembly, and the comb has the advantages of simple structure, easiness in maintenance, convenience in cleaning and low later maintenance cost.

Description

Technical Field

[0001] The utility model relates to the technical field of wooden comb processing, in particular to a dispensing valve for the dispensing and bonding of a wooden comb with assembled teeth. Background Art

[0002] In the wooden comb industry, there is an inserted-tooth comb. Its manufacturing method is to first drill tooth holes in the comb blank, then dispense glue into the tooth holes, and then insert the teeth to achieve the bonding and fixing of the teeth. The glue usually uses AB structural glue. To improve the dispensing efficiency, many wooden comb processing enterprises have started to develop or introduce automated dispensing equipment.

[0003] Existing automated dispensing equipment usually uses a thimble-type dispensing valve or a piston-type dispensing valve to achieve the dispensing function. The common feature of the above dispensing valves is that the thimble component or the piston component is arranged inside the dispensing valve body and is in direct contact with the glue. For the tooth holes of the comb, the glue consumption per single hole is extremely small, usually only about 0.015 mg. To ensure the full mixing of the glue, the amount of glue prepared at one time cannot be too small. Therefore, the glue prepared at one time cannot be consumed within a short time, and the glue will gradually become thick during use. The conical thimble of the thimble-type dispensing valve or the piston of the piston-type dispensing valve are prone to untimely opening and closing or incomplete closing when running in the thick glue. When the glue remaining in the valve body solidifies, the thimble or the piston may even be stuck, resulting in the failure of the dispensing valve function. To avoid the above situation, during the operation of the equipment, the operator needs to frequently clean the pipeline or disassemble and clean the valve body and replace the seals, etc., which has a great adverse impact on the operation efficiency and maintenance cost of the equipment. In addition, the above thimble-type dispensing valve or piston-type dispensing valve relies on hydrostatic pressure to extrude the glue, and the glue consumption per single tooth hole of the inserted-tooth comb is extremely small. Therefore, the extruded glue is in the form of extremely small particles, and this extremely small particle glue randomly drips into the tooth holes and cannot evenly cover the hole wall and the hole bottom. After the teeth are inserted, there is an easy phenomenon that the teeth are not firmly bonded due to the lack of glue in some parts.

[0004] Therefore, it is an urgent technical problem to develop a dispensing valve that is not easy to be blocked, easy to clean, has a low maintenance cost, and the glue dispensing state is beneficial to improving the bonding strength of the teeth. Content of the Utility Model

[0005] In view of this, the utility model provides a dispensing valve, which is not easy to be blocked, easy to clean, has a low maintenance cost, and the glue dispensing state is beneficial to improving the bonding strength of the teeth.

[0006] The dispensing valve provided by the utility model adopts the following technical scheme:

[0007] A dispensing valve, comprising:

[0008] A base, as a carrier;

[0009] Glue discharging assembly, disposed on a carrier, the glue discharging assembly having a glue discharging channel for glue to flow through, the glue discharging assembly including a dispensing needle, the dispensing needle serving as the glue discharging port of the glue discharging channel;

[0010] Actuating assembly, including a pressing head, the pressing head being manipulable to squeeze the glue discharging channel, causing the glue discharging channel to be compressed and deformed, and capable of blocking the flow of glue in the glue discharging channel;

[0011] Glue blowing assembly, the glue blowing assembly having an air channel for compressed air to flow through, the air channel communicating with the glue discharging channel.

[0012] Optionally, the glue discharging assembly further includes a glue discharging tube and a connection valve, the glue discharging tube being disposed on a base, the glue discharging tube being connected to the dispensing needle through the connection valve.

[0013] Optionally, the glue blowing assembly includes a blowing tube and a blowing needle, the blowing tube being used for compressed air to flow through, the blowing needle communicating with the glue discharging channel, and the compressed air sequentially enters the glue discharging channel through the blowing tube and the blowing needle.

[0014] Optionally, the base includes a glue valve seat, a glue tube seat and a needle seat disposed on the glue valve seat, the glue discharging tube being fixed to the glue tube seat through a fixing member, the dispensing needle being disposed on the needle seat, and the pressing head being disposed on the glue valve seat and being manipulable to squeeze the glue discharging channel of the glue discharging tube.

[0015] Optionally, a guiding groove for restricting the rotation of the pressing head is provided between the pressing head and the glue valve seat.

[0016] Optionally, a cylinder is provided on the glue valve seat, and the cylinder can drive the pressing head to squeeze the glue discharging tube to block the flow of glue in the glue discharging channel.

[0017] Optionally, a one-way valve is provided between the blowing tube and the blowing needle.

[0018] Optionally, the glue discharging tube can spontaneously return to its shape before compression after being compressed.

[0019] Optionally, the connection valve is an air-glue three-way valve, the glue discharging tube is connected to the air-glue three-way valve through a quick-connect fitting, and the blowing needle is inserted into the inclined hole of the air-glue three-way valve.

[0020] Optionally, the air-glue three-way valve is disposed on the needle seat through a connecting member one, and the needle seat is disposed on the glue valve seat through a connecting member two.

[0021] In summary, the present utility model includes at least one of the following beneficial technical effects: the glue outlet channel is shut off by pressing the pressing head on it, and the glue is released by releasing the pressing head. The glue is evenly distributed in the comb teeth holes by blowing through the glue blowing assembly, with a simple structure, easy to repair, convenient to clean, and low later maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 is the overall structural schematic diagram of the embodiment of the present utility model;

[0024] Figure 2 is the partial cross-section of the embodiment of the present utility model Figure 1 ;

[0025] Figure 3 is the partial cross-section of the embodiment of the present utility model Figure 2 .

[0026] Description of the reference numerals: 1, fixing member; 2, rubber tube seat; 3, pressing head; 4, rubber valve seat; 5, cylinder; 6, blowing tube; 7, one-way valve; 8, blowing needle; 9, glue outlet tube; 10, quick-connect fitting; 11, needle seat; 12, air-glue three-way valve; 13, dispensing needle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following specific examples illustrate the embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0028] The following will further describe the present utility model in detail Figures 1-3 in conjunction with the appended

[0029] The embodiment of the present utility model discloses a dispensing valve.

[0030] Referring to Figure 1 , Figure 2 , Figure 3, A dispensing valve includes a base, a glue dispensing component, an actuating component, and a glue blowing component. The base, as a carrier, has the glue dispensing component disposed thereon. The glue dispensing component has a glue dispensing channel for the flow of glue. The glue dispensing component includes a dispensing needle 13, and the dispensing needle 13 serves as the glue outlet of the glue dispensing channel. The actuating component includes a pressing head 3, and the pressing head 3 can be manipulated to squeeze the glue dispensing channel, causing the glue dispensing channel to be compressed and deformed, thereby blocking the flow of glue in the glue dispensing channel. The glue blowing component has an air channel for the flow of compressed air, and the air channel communicates with the glue dispensing channel. By pressing the pressing head 3 to close the glue dispensing channel to cut off the glue, releasing the pressing head 3 to discharge the glue, and blowing the glue through the glue blowing component, the glue is evenly distributed in the comb teeth holes. The glue dispensing state is beneficial to improving the bonding strength of the comb teeth, and it has a simple structure, is easy to repair, convenient to clean, and has low later maintenance costs.

[0031] The base can be integrally formed or assembled in a split manner. In this embodiment, it is assembled in a split manner. The base includes a valve seat 4, a hose seat 2, and a needle seat 11. The hose seat 2 and the needle seat 11 are disposed on the valve seat 4, and the needle seat 11 is disposed on the valve seat 4 through a second connecting member. Specifically, the needle seat 11 and the hose seat 2 are respectively installed on corresponding positions of the valve seat 4 through bolts.

[0032] In this embodiment, the pressing head 3 is disposed on the valve seat 4 and can be manipulated to squeeze the glue dispensing channel of the glue hose 9. A cylinder 5 is disposed on the valve seat 4, and the cylinder 5 can drive the pressing head 3 to squeeze the glue hose 9 to block the flow of glue in the glue dispensing channel.

[0033] A guiding groove for restricting the rotation of the pressing head 3 is provided between the pressing head 3 and the valve seat 4, so that the pressing head 3 keeps its direction unchanged during the process of squeezing or separating from the glue hose 9.

[0034] In this embodiment, the glue dispensing component includes a dispensing needle 13, a glue hose 9, and a connecting valve. The glue hose 9 is disposed on the valve seat 4 through a fixing member 1, and the glue hose 9 is connected to the dispensing needle 13 through the connecting valve.

[0035] In this embodiment, the glue hose 9 is fixed to the hose seat 2 through a fixing member 1. Specifically, the fixing member 1 is a locking screw, and the glue hose 9 is fixed within the hose seat 2 through the locking screw. After being compressed, the glue hose 9 can spontaneously return to its shape before compression, and the glue hose 9 can spontaneously return to its state before compression. Specifically, the glue hose 9 is made of an elastic hose. The upper end of the glue hose 9 is connected to the pressurized glue after mixing, and the lower end of the glue hose 9 is connected to an air-glue three-way valve 12 through a quick-connect fitting 10 to form a glue flow path.

[0036] In this embodiment, the glue blowing assembly includes a blowing air pipe 6, a one-way valve 7, and a blowing air needle 8. The blowing air pipe 6 is used for the flow of compressed air, the blowing air needle 8 communicates with the glue outlet channel, and the one-way valve 7 is arranged between the blowing air pipe 6 and the blowing air needle 8. The compressed air enters the glue outlet channel successively through the blowing air pipe 6, the one-way valve 7, and the blowing air needle 8.

[0037] Specifically, the upper end of the blowing air pipe 6 is connected to the compressed air, and the lower end is connected to the one-way valve 7 and the blowing air needle 8.

[0038] In this embodiment, the connection valve is an air-glue three-way valve 12. The air-glue three-way valve 12 is arranged on the needle seat 11 through a connecting piece one. Specifically, the connecting piece one is a locking screw, and the air-glue three-way valve 12 is installed in the needle seat 11 through the locking screw. Specifically, a dispensing needle 13 is installed at the lower end of the air-glue three-way valve 12. The dispensing needle 13 is arranged on the needle seat 11, and the blowing air needle 8 is tightly inserted into the inclined hole of the air-glue three-way valve 12.

[0039] The implementation principle of the present utility model is as follows: The pressing head 3 extends out and presses on the glue outlet pipe 9, causing the glue outlet pipe 9 to undergo compressive deformation until the inner cavity of the glue outlet pipe 9 is completely closed, blocking the flow of glue in the glue outlet channel, thereby shutting off the glue. When the pressing head 3 withdraws, the glue outlet pipe 9 rebounds to the state before compression under its own elastic action, and the inner cavity of the glue outlet pipe 9 resumes smoothness, and the glue naturally flows out.

[0040] The dispensing operation process of the dispensing valve of the present utility model is as follows: First, open the dispensing valve. After a certain amount of glue is filled, then close the dispensing valve, and then open the glue blowing assembly. After a delay for a period of time, close the glue blowing assembly.

[0041] The advantages of the present utility model are as follows: The glue only flows in the glue outlet pipe 9. The inner wall of the glue outlet pipe 9 is smooth without dead ends, which is convenient for cleaning and not prone to glue blockage and fouling; the pressing head 3 does not come into contact with the glue, avoiding the inflexibility or jamming of the pressing head 3 components due to the thickening or solidification of the glue; the glue blowing assembly is added, so that the glue is fully dispersed in the tooth holes and can be evenly attached to the bottom and the wall of the holes, which is beneficial to improving the bonding strength of the comb teeth; it has a long service life, is simple to replace, and has low use and maintenance costs.

[0042] The present utility model has good micro-dispensing effect for the inserted-tooth comb, is particularly suitable for the automatic dispensing machine of the inserted-tooth comb, and greatly improves the production efficiency.

[0043] In this article, specific examples are used to elaborate on the principle and implementation mode of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. The above is only the preferred implementation mode of the present utility model. It should be noted that due to the limitation of literal expression and objectively there are infinite specific structures, for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements, modifications or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, modifications, changes or combinations, or directly applying the concept and technical solution of the utility model to other occasions without improvement, shall all be regarded as the protection scope of the present utility model.

Claims

1. A dispensing valve, characterized in that: include: The base, serving as a carrier; A glue outlet component is arranged on the carrier, the glue outlet component has a glue outlet channel for glue to flow, the glue outlet component comprises a glue dispensing needle (13), and the glue dispensing needle (13) serves as a glue outlet of the glue outlet channel; The action component comprises a pressing head (3), wherein the pressing head (3) can be operated to squeeze the glue outlet channel, so that the glue outlet channel is compressed and deformed, thereby blocking the flow of glue in the glue outlet channel; The glue blowing component has an air channel for compressed air to flow, and the air channel is in communication with the glue outlet channel.

2. The dispensing valve according to claim 1, characterized in that: The glue dispensing assembly further comprises a glue dispensing pipe (9) and a connecting valve. The glue dispensing pipe (9) is arranged on the base, and the glue dispensing pipe (9) is connected to the glue dispensing needle (13) via the connecting valve.

3. The dispensing valve according to claim 2, characterized in that: The glue blowing assembly comprises an air blowing pipe (6) and an air blowing needle (8), wherein the air blowing pipe (6) is used for communicating with compressed air, and the air blowing needle (8) is communicated with a glue outlet channel, and the compressed air enters the glue outlet channel through the air blowing pipe (6) and the air blowing needle (8) in sequence.

4. The dispensing valve according to claim 2, characterized in that: The base comprises a glue valve seat (4) and a glue hose seat (2) and a needle seat (11) arranged on the glue valve seat (4); the glue outlet tube (9) is fixed to the glue hose seat (2) via a fixing member (1); the glue dispensing needle (13) is arranged on the needle seat (11); and the pressure head (3) is arranged on the glue valve seat (4) and can be operated to squeeze the glue outlet channel of the glue outlet tube (9).

5. The dispensing valve according to claim 4, characterized in that: A guide groove for limiting the rotation of the pressure head (3) is provided between the pressure head (3) and the glue valve seat (4).

6. The dispensing valve according to claim 4, characterized in that: The glue valve seat (4) is provided with a cylinder (5), and the cylinder (5) can drive the pressure head (3) to squeeze the glue outlet tube (9) to block the flow of glue in the glue outlet channel.

7. The dispensing valve according to claim 3, characterized in that: A one-way valve (7) is provided between the air blowing tube (6) and the air blowing needle (8).

8. The dispensing valve according to claim 2, characterized in that: After being compressed, the rubber outlet pipe (9) can spontaneously recover to its shape before compression.

9. The dispensing valve according to claim 3, characterized in that: The connecting valve is an aerogel three-way valve (12), the rubber outlet pipe (9) is connected to the aerogel three-way valve (12) via a quick-tightening joint (10), and the blowing needle (8) is inserted into the oblique hole of the aerogel three-way valve (12).

10. The dispensing valve according to claim 9, characterized in that: The aerogel three-way valve (12) is arranged on the needle seat (11) via a first connecting piece, and the needle seat (11) is arranged on the glue valve seat (4) via a second connecting piece.

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