Non-contact multi-channel high-speed injection valve

Abstract

The present invention provides a non-contact multi-channel high-speed injection valve, which can effectively solve the existing screen printing production mode in the industries of clothing fabrics, shoe materials, luggage fabrics, etc., which uses templates as references, draws lines with manual hand-held brushes inefficiently, and causes environmental pollution and energy waste; the technical solution is: the high-speed injection valve is composed of an actuator, a flow channel component, an ink and solvent container component, and a high-frequency electromagnetic valve drive mechanism. The side of the high-speed injection valve actuator is tightly connected to the high-frequency electromagnetic valve drive mechanism by a sealing pipe threaded joint. The compressed air passing through the electromagnetic valve drive mechanism drives the internal piston rod of the high-speed injection valve actuator to move upward, and the piston rod is quickly reset under the reaction force of the double high-strength compression spring to drive the piston rod downward, impacting the ink in the lower nozzle to be ejected from the small hole to achieve non-contact ink injection work.

Description

Technical Field

[0001] The invention relates to the technical field of drawing lines as reference marks in the production of textile fabrics and leather materials, and in particular to a non-contact multi-channel high-speed injection valve. Background Art

[0002] In the current production of footwear, luggage and clothing, there is a sewing process before clothing cutting and after shoe material stamping and cutting, in which various sheet materials are sewn according to the pre-drawn reference lines. In this process, the traditional method of marking reference lines in the footwear, luggage and clothing industries is still manual hand-held brush operation, using a hard plastic sheet of a specific shape as a template, overlapping the template with textile fabrics or leather materials of the same size as the template, and manually drawing lines along the reference line slots reserved on the template with a special brush; this operation method is too slow and the accuracy is not specifically quantified, which creates an extremely unstable factor for mass production; on the other hand, it uses screen printing, which will produce a lot of ink waste and a lot of water pollution when cleaning the screen.

[0003] At present, the market has seen the use of jet valves to automatically spray marking lines on machines. This type of valve body is restricted by the structure. On the one hand, the single-channel structure determines that when changing a color of spray medium, the medium can only be replaced after being removed and cleaned. At the same time, the spray valve needs to be removed and the nozzle needs to be cleaned every day, which is time-consuming and labor-intensive, and the customer experience is poor. On the other hand, the jet valve has a small spray force. For some glues with higher viscosity, there are problems such as failure to spray and unsmooth conditions. The above problems seriously restrict the development of automation in the inkjet and glue spraying industries. Summary of the invention

[0004] In view of the defects in the prior art, an object of the present invention is to provide a non-contact multi-channel high-speed injection valve.

[0005] According to the present invention, a non-contact multi-channel high-speed injection valve is provided, comprising an injection valve actuator 1, a channel assembly 2, a high-frequency electromagnetic valve drive mechanism 4 and a plurality of container assemblies, wherein:

[0006] The injection valve actuator 1 comprises a piston cylinder 6, wherein the piston cylinder 6 has a spring device and a piston rod 10 built therein, and the spring device abuts against the piston rod 10; an ink outlet cavity 12 and a nozzle 14 are arranged at the lower part of the piston cylinder 6;

[0007] A plurality of flow channels are arranged in the flow channel assembly 2, and a plurality of container assemblies are respectively installed at the inlet ends of the plurality of flow channels, and the plurality of flow channels converge to a confluence port, and the confluence port is connected to the nozzle 14;

[0008] The high-frequency solenoid valve driving mechanism 4 and the injection valve actuator 1 are tightly connected. The high-frequency solenoid valve driving mechanism 4 and the spring device drive the piston rod 10 to form a reciprocating motion, thereby pushing the nozzle 14 to open.

[0009] Preferably, the injection valve actuator 1 is provided with an opening, the opening is connected to the high-frequency solenoid valve driving mechanism 4, and the high-frequency solenoid valve driving mechanism 4 pushes the piston rod 10 to move upward through the opening.

[0010] Preferably, the spring device comprises a compression spring 9, which presses against the upper end of the piston rod 10 and generates a preload force.

[0011] Preferably, the solenoid valve driving mechanism 4 comprises a high-speed solenoid valve 15, a quick connector 16 and a compressed air passing muffler 17, wherein:

[0012] The quick connector 16 and the compressed air are arranged on the high-speed solenoid valve 15 through the muffler 17;

[0013] The compressed air enters the high-speed solenoid valve 15 through the quick connector 16, and the high-speed solenoid valve 15 is controlled to switch the compressed air into the piston cylinder 6 to push the piston rod 10 up and down to perform a reciprocating motion;

[0014] When the piston rod 10 moves downward, the compressed air in the piston cylinder 6 is discharged through the port of the muffler 17 .

[0015] Preferably, an ink-interfusion prevention valve 29 and a compression spring 31 are provided in each flow channel of the flow channel assembly 2, wherein the ink-interfusion prevention valve 29 presses against the compression spring 31 to disconnect the flow channel.

[0016] Preferably, a quick connector is provided on the container assembly, and the pressure input through the quick connector can impact the ink cross-linking prevention valve 29 to drive the compression spring 31 to compress, thereby opening the flow channel.

[0017] Preferably, it also includes a center rod, a return spring 8 and a rotation adjustment handle 7, wherein:

[0018] The lower end of the center rod is connected to the piston rod 10;

[0019] The return spring 8 is sleeved on the center rod and generates a pre-tightening force on the center rod;

[0020] The rotary adjustment handle 7 is arranged above the piston cylinder 6 and adjusts the pre-tightening force of the return spring 8 on the center rod.

[0021] Preferably, a port is provided on the side of the flow channel component 2, and the port is connected to the flow channel.

[0022] Preferably, a nozzle fixing jig 13 is further included, and the nozzle fixing jig 13 fixes the nozzle 14 .

[0023] Preferably, the ink outlet cavity 12 , the nozzle fixing fixture 13 and the nozzle 14 are all arranged on the central axis of the piston cylinder 6 .

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The non-contact multi-channel high-speed injection valve provided by the present invention does not contact the material surface during operation and can operate smoothly without being affected by the hardness or softness of the textile fabric, the roughness or smoothness of the surface. At the same time, the original design of the injection structure of the present invention makes the injection force adjustable, thereby realizing the injection of different media, such as ink, glue, paint, alcohol, etc., and the size of the injection point can be adjusted to meet the process applications of different industries.

[0026] 2. The non-contact multi-channel high-speed jet valve provided by the present invention is mounted on a platform with X-axis and Y-axis CNC motion mechanisms. It can realize automated production of high-speed inkjet marking without making paper samples or hard templates. The jet frequency can reach 350HZ, replacing the existing labor-intensive manual production method.

[0027] 3. The non-contact multi-channel high-speed injection valve provided by the present invention has a fully enclosed design, all liquid channels are hidden structures, and a modular design, which is quick and simple to operate.

[0028] 4. The non-contact multi-channel high-speed injection valve provided by the present invention is provided with an automatic cleaning function, which overcomes the traditional technical prejudice. The cleaning function can be turned on after each production shift or before work to automatically clean the nozzle of the injection valve, avoid ink blockage and ink accumulation, and improve work efficiency.

[0029] 5. The present invention can realize the spraying of liquid media such as ink, glue, paint, alcohol, etc. by adjusting the force of the spray valve and changing the size of the nozzle aperture.

[0030] 6. The present invention realizes the conversion injection of multiple media, and the injection efficiency is improved many times. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0032] Figure 1 It is a three-dimensional schematic diagram of each functional module of the high-speed injection valve of the present invention;

[0033] Figure 2 It is a schematic diagram of the arrangement of the functional modules of the high-speed injection valve of the present invention;

[0034] Figure 3 It is a schematic diagram of the injection valve actuator and the solenoid valve mechanism of the present invention;

[0035] Figure 4 It is a schematic diagram of the structure of the flow channel assembly of the present invention;

[0036] Figure 5 It is a structural schematic diagram of the independent feeding module of the present invention. DETAILED DESCRIPTION

[0037] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0038] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0039] In this embodiment, a non-contact dual-channel high-speed injection valve is used as an example for specific description. Figure 1 As shown, the non-contact dual-channel high-speed injection valve provided according to the present invention includes an injection valve actuator 1, a channel assembly 2, an ink and solvent container assembly 3, and a high-frequency solenoid valve drive mechanism 4. The high-speed injection valve actuator 1 is tightly connected to the high-frequency solenoid valve drive mechanism 4 by a sealing pipe threaded joint on the side shown in the figure, and the compressed air passing through the solenoid valve drive mechanism 4 drives the internal piston rod of the high-speed injection valve actuator 1 to move upward, and the piston rod is quickly reset under the reaction force of the double high-strength compression spring to drive the piston rod downward, impacting the ink in the lower nozzle to be ejected from the small hole to perform the injection action, and the compressed air force applied to the ink and solvent container assembly 3 is controlled to push the ink or cleaning solution to flow through the channel assembly 2 to continuously provide ink or solvent to the nozzle, and the channel assembly 2 is provided with a valve that can only flow in one direction, and is tightly connected to the lower part of the high-speed injection valve actuator 1, and the channels are interconnected.

[0040] like Figure 2 and Figure 3As shown, the high-speed injection valve actuator 1 includes a piston cylinder 6, a piston rod 10 and a positioning sealing ring 11 are arranged inside the piston cylinder 6, and a reset compression spring 8 and a compression spring 9 with double reaction force on the upper part. The reset reaction force and reset stroke of the piston rod are changed by rotating the adjusting handle 7. A reference indication scale is arranged on the circumferential surface of the adjusting handle 7. An ink outlet cavity 12, a nozzle fixing fixture 13 and a nozzle 14 are arranged at the lower part of the piston cylinder 6. The centers of the parts are all arranged on the central axis of the piston cylinder 6; the high-speed solenoid valve 15 is tightly connected to the piston cylinder 6 by a sealing pipe threaded joint, and the compressed air enters the high-speed solenoid valve 15 from the quick joint 16. By controlling the on and off of the high-speed solenoid valve, the compressed air is switched to the piston cylinder 6 to push the piston rod 10 up and down to perform reciprocating motion. When the piston rod 10 moves downward, the compressed air in the piston cylinder 6 is discharged through the port of the muffler 17 to constitute the injection valve action.

[0041] like Figure 2 and Figure 4 As shown, an ink and solvent container assembly 3 is arranged on the upper part of the flow channel assembly 2. The ink container 20 and the solvent container 21 are tightly mounted on the flow channel plate 18 through the flow channel plate connector 19 and are perpendicular to each other. A sealing ring 30 is arranged between the flow channel plate 18 and the ink outlet cavity 12. The ink applied with air pressure to the inside of the ink container 20 through the quick connector 22 is injected into the ink flow channel 27 from the port 26, and the pressure spring 31 is compressed by the air pressure impacting the anti-ink cross-flow valve 29, and the ink enters the nozzle 14 from the confluence port 35 inside the ink outlet cavity 12, which is the ink working process; the cleaning solvent applied with air pressure to the inside of the solvent container 21 is injected into the solvent flow channel 25 from the port 24 through the quick connector 23, and the pressure spring 33 is compressed by the air pressure impacting the anti-ink cross-flow valve 32, and the cleaning solvent enters the nozzle 14 from the confluence port 36 inside the ink outlet cavity 12, which is the solvent working process; when one of the flow channels is working, the other flow channel is closed under the reaction of the anti-ink cross-flow valve, and there is no air pressure in the closed flow channel.

[0042] like Figure 2 The ink container 20 and the solvent container 21 are fixed on the flow channel plate 18 by a special clamp, which can fix the container to prevent rotation, avoid air leakage at the joint, liquid leakage, and prevent unstable air pressure. The flow channel plate 18 is made of aluminum alloy or plastic.

[0043] The two channels in the channel assembly 2 have the same function and are not specifically designated for use with ink or solvent. Both low-viscosity flowing liquids can be used. It is not specifically designated which channel supplies ink or solvent. Specific instructions are provided in this patent for listing application examples.

[0044] Ports 28 and 34 are provided on the side of the flow channel plate 2, which are sealed with plugs during operation and can be quickly disassembled during maintenance.

[0045] like Figure 5 As shown, the cleaning and supply container assembly 3 installed on the flow channel assembly 2 is tightly connected to the ink outlet cavity 12 at the bottom of the high-speed jet valve actuator 1, and can be used as an independent supply module 5 for maintenance to reduce pollution and use impact on other mechanisms and components.

[0046] Multiple side surfaces of the piston cylinder body 6 are provided with mounting screw holes, and the spacing between the mounting screw holes is equal, which is suitable for the quick clamp to be installed regardless of left or right.

[0047] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A non-contact multi-channel high-speed injection valve, characterized in that: It comprises an injection valve actuator (1), a flow channel component (2), a high-frequency electromagnetic valve drive mechanism (4) and a plurality of container components, wherein: The injection valve actuator (1) comprises a piston cylinder (6), wherein the piston cylinder (6) has a spring device and a piston rod (10) built therein, and the spring device abuts against the piston rod (10); an ink outlet cavity (12) and a nozzle (14) are arranged at the lower part of the piston cylinder (6); A plurality of flow channels are arranged in the flow channel assembly (2), and a plurality of container assemblies are respectively installed at the inlet ends of the plurality of flow channels. The plurality of flow channels converge to a confluence port located inside the ink outlet cavity (12), and the confluence port is connected to the nozzle (14); when one of the flow channels is in operation, the other flow channels are closed; The high-frequency solenoid valve driving mechanism (4) and the injection valve actuator (1) are tightly connected, and the high-frequency solenoid valve driving mechanism (4) and the spring device drive the piston rod (10) to form a reciprocating motion, thereby pushing the nozzle (14) to open; The high-frequency solenoid valve driving mechanism (4) comprises a high-speed solenoid valve (15), a first quick connector (16), and a compressed air passing muffler (17), wherein: A first quick connector (16) and compressed air are arranged on the high-speed solenoid valve (15) through a muffler (17); Compressed air enters the interior of the high-speed solenoid valve (15) through the first quick connector (16), and the high-speed solenoid valve (15) is controlled to switch the compressed air into the piston cylinder (6) to push the piston rod (10) up and down to perform a reciprocating motion; When the piston rod (10) moves downward, the compressed air in the piston cylinder (6) is discharged through the port of the muffler (17); An ink-crossing prevention valve (29) and a second compression spring (31) are provided in each flow channel of the flow channel assembly (2), wherein the ink-crossing prevention valve (29) presses against the second compression spring (31) to disconnect the flow channel; The container assembly is provided with a second quick connector, and pressure input through the second quick connector can impact the ink cross-talk prevention valve (29) to drive the second compression spring (31) to compress, thereby opening the flow channel.

2. The non-contact multi-channel high-speed injection valve according to claim 1, characterized in that: The injection valve actuator (1) is provided with an opening, the opening being connected to the high-frequency electromagnetic valve drive mechanism (4), and the high-frequency electromagnetic valve drive mechanism (4) pushes the piston rod (10) to move upwards through the opening.

3. The non-contact multi-channel high-speed injection valve according to claim 1, characterized in that: The spring device comprises a first compression spring (9), the first compression spring (9) pressing against the upper end of the piston rod (10) and generating a preload force.

4. The non-contact multi-channel high-speed injection valve according to claim 1, characterized in that: It also includes a center rod, a return spring (8) and a rotation adjustment handle (7), wherein: The lower end of the center rod is connected to the piston rod (10); The return spring (8) is sleeved on the center rod and generates a pre-tightening force on the center rod; The rotary adjustment handle (7) is arranged above the piston cylinder (6) and adjusts the preload force of the return spring (8) on the center rod.

5. The non-contact multi-channel high-speed injection valve according to claim 1, characterized in that: A port is provided on the side of the flow channel component (2), and the port is connected to the flow channel.

6. The non-contact multi-channel high-speed injection valve according to claim 1, characterized in that: It also includes a nozzle fixing jig (13), which fixes the nozzle (14).

7. The non-contact multi-channel high-speed injection valve according to claim 6, characterized in that: The ink outlet cavity (12), the nozzle fixing fixture (13) and the nozzle (14) are all arranged on the central axis of the piston cylinder (6).

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