Mixed material spraying device

Abstract

The invention discloses a mixed material spraying device which comprises a base, a push rod mechanism mounted on the base, an inner sleeve mounted in the base, an injection valve mechanism mounted on the base, a feed port assembly and a return port assembly, wherein the feed port assembly and the return port assembly are arranged on the base; the injection valve mechanism is installed on the side face of the base and used for controlling injection pressure, and the push rod mechanism is installed above the base and used for pushing out mixed materials. According to the mixed material spraying device in the technical scheme, when the push rod mechanism is located at the low position, materials enter the injection valve mechanism through the feeding port assembly and flow back to the material returning port assembly through the material returning groove formed in the push rod to flow out, and the situation that the materials are hardened and adhere to the interior of equipment after being not used for a long time is effectively prevented; when the push rod mechanism is located at the high position, the materials are injected into the inner sleeve through the injection valve mechanism to be subjected to jet mixing and sprayed out to a follow-up station, the push rod mechanism returns to push out the materials attached to the interior of equipment after injection is completed, and the self-cleaning effect is achieved.

Description

Technical Field

[0001] The invention belongs to the field of coating, and in particular relates to a mixed material spraying device. Background Art

[0002] The spraying setting is used to apply high-viscosity glue to the required equipment. It is increasingly widely used in photovoltaic, electronics, automotive and other industries, which can greatly improve work efficiency and reduce manual labor.

[0003] Due to the characteristics of the spraying materials, the existing multi-component mixing spraying equipment needs to keep the internal materials in a flowing state and reduce the material residue inside the equipment as much as possible to avoid the spraying materials from solidifying and sticking, which will affect the use. To this end, it is necessary to meet two usage functions. First, when the internal materials do not need to be sprayed, the internal materials need to form a discharge and return cycle. Second, when the materials need to be mixed and sprayed, they need to be mixed and sprayed inside the equipment and after the spraying is completed, the residual materials inside the equipment can be reduced to achieve a self-cleaning effect and avoid internal sticking and solidification.

[0004] Therefore, in order to solve the above problems, a mixed material spraying device is needed to solve the above problems. Summary of the invention

[0005] In view of this, in the multi-component mixing injection nozzle of the present technical solution, when the push rod mechanism is in a low position, the material enters the injection valve mechanism through the feed port assembly and flows back to the return port assembly through the return groove provided on the push rod, thereby effectively preventing the material from hardening and sticking to the equipment after being not used in the equipment for a long time. When the push rod mechanism is in a high position, the material is sprayed into the inner sleeve through the injection valve mechanism for jet mixing and sprayed to the subsequent workstation. After the spraying is completed, the push rod mechanism returns to its position to push out the material attached to the equipment, thereby achieving a self-cleaning effect.

[0006] The present invention discloses a multi-component mixing injection nozzle, comprising a base, a push rod mechanism installed on the base, an inner sleeve installed in the base, an injection valve mechanism installed on the base, a feed port assembly and a return port assembly arranged on the base; the injection valve mechanism is installed on the side of the base for controlling the injection pressure, and the push rod mechanism is installed above the base for pushing out the mixed material.

[0007] Furthermore, the push rod mechanism includes an oil cylinder installed on a base and a material push rod used in conjunction with the oil cylinder. The lower end of the material push rod axially penetrates the inner sleeve and the material push rod can slide back and forth along the axial direction of the inner sleeve. A material push rod limit groove for limiting positioning is provided on the material push rod.

[0008] Furthermore, the material push rod is provided with a return trough used in conjunction with the return port assembly, and the base is provided with a feed circuit for connecting the injection valve mechanism and the feed port assembly. The material enters the injection valve mechanism through the feed circuit and flows out of the return port assembly after passing through the return trough.

[0009] Furthermore, a mold joint for use with the inner sleeve is installed at the lower end of the base, and an end cover for use with the mold joint is provided at the lower end of the base. The mold joint outer sleeve is installed on the inner sleeve, and the end cover is fixedly installed with the base and used to limit the mold joint.

[0010] Furthermore, the injection valve mechanism includes an injection valve body, a ejector needle assembly installed in the injection valve body, and a valve needle assembly installed on the injection valve body. The end of the injection valve body is provided with an ejector needle adjustment assembly for adjusting the installation position of the ejector needle assembly, and the ejector needle assembly is used to axially tighten the valve needle assembly.

[0011] Furthermore, the ejector assembly includes an ejector that can be axially slidably adjusted and installed in the injection valve body, a guide seat that is sleeved on the end of the ejector, and a spring arranged between the guide seat and the ejector. The cross-section of the ejector along the axial direction is a "cross" structure, and the end of the ejector axially penetrates the guide seat. The spring is sleeved on the ejector and one end of the spring is pressed against the ejector, and the other end of the spring is pressed against the end face of the guide seat.

[0012] Furthermore, the valve needle assembly includes a valve sleeve installed at the end of the injection valve body, a valve plate arranged at the end of the valve sleeve, and a valve needle installed in the valve sleeve. The valve needle can slide back and forth along the axial direction of the valve sleeve. The valve plate is provided with a valve plate opening for cooperating with the valve needle. The axial movement of the valve needle is used to open or close the valve plate opening.

[0013] Furthermore, the valve sleeve is provided with a valve sleeve opening in the circumferential direction, and the material enters the valve sleeve through the valve sleeve opening to push the valve needle to move in the axial direction; the ejector needle adjustment assembly includes an adjusting nut installed at the end of the valve sleeve and an adjusting screw installed on the valve sleeve, and the end of the adjusting screw is pressed against the ejector needle.

[0014] Furthermore, a positioning rod is provided on the base to cooperate with the inner sleeve for positioning. The positioning rod is fixedly installed in cooperation with the inner sleeve and the end of the positioning rod extends to the material push rod limiting groove for circumferentially limiting the material push rod.

[0015] Furthermore, the feed port assembly includes a first feed port and a second feed port with the same structure installed on the base; the return port assembly includes a first return port and a second return port with the same structure installed on the base.

[0016] Beneficial effects of the present invention:

[0017] In the multi-component mixing injection nozzle of the present technical solution, when the push rod mechanism is in a low position, the material enters the injection valve mechanism through the feed port assembly and flows back to the return port assembly through the return groove provided on the push rod, which effectively prevents the material from hardening and sticking to the equipment after being not used in the equipment for a long time. When the push rod mechanism is in a high position, the material is sprayed into the inner sleeve through the injection valve mechanism for jet mixing and sprayed to the subsequent workstation. After the spraying is completed, the push rod mechanism returns to its position to push out the material attached to the equipment, thereby achieving a self-cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional schematic diagram of the present invention;

[0019] Figure 2 It is a side cross-sectional schematic diagram of the present invention (the push rod mechanism is in a high position);

[0020] Figure 3 It is a top view schematic diagram of the present invention;

[0021] Figure 4 It is a cross-sectional schematic diagram of the injection valve mechanism of the present invention;

[0022] Figure 5 It is an overall schematic diagram of the present invention. DETAILED DESCRIPTION

[0023] Figure 1 It is a cross-sectional schematic diagram of the present invention; Figure 2 It is a side cross-sectional schematic diagram of the present invention (the push rod mechanism is in a high position); Figure 3 It is a top view schematic diagram of the present invention; Figure 4 It is a cross-sectional schematic diagram of the injection valve mechanism of the present invention; Figure 5 The present invention is an overall schematic diagram; as shown in the figure. A multi-component mixing injection nozzle comprises a base 6, a push rod mechanism installed on the base 6, an inner sleeve 8 installed in the base 6, an injection valve mechanism 5 installed on the base 6, a feed port assembly and a return port assembly arranged on the base; the injection valve mechanism 5 is installed on the side of the base 6 to control the injection pressure, and the push rod mechanism is installed above the base to push out the mixed material; the multi-component mixing injection nozzle of the technical solution, when the push rod mechanism is in a low position (such as Figure 1 As described, at this time, the push rod mechanism is in the lowest position as a whole), the material enters the injection valve mechanism through the feed port assembly and flows back to the return port assembly through the return groove provided on the push rod, which effectively prevents the material from hardening and sticking to the equipment after being not used in the equipment for a long time. When the push rod mechanism is in a high position, the material is sprayed into the inner sleeve through the injection valve mechanism for jet mixing and sprayed to the subsequent workstation. After the spraying is completed, the push rod mechanism returns to its position to push out the material attached to the equipment, thereby achieving a self-cleaning effect.

[0024] In this embodiment, the push rod mechanism includes an oil cylinder installed on a base 6 and a material push rod 1 used in conjunction with an oil cylinder 9. The lower end of the material push rod 1 axially penetrates the inner sleeve 8 and the material push rod 1 can slide back and forth along the axial direction of the inner sleeve. A material push rod limit groove for limiting is provided on the material push rod 1. The lower end of the material push rod 1 passes through the inner sleeve 8, and the oil cylinder 9 drives the material push rod 1 to move in the axial direction. A high-voltage proximity switch 10 is provided above it for detecting the position of the material push rod 1, so as to facilitate the control of the internal mechanism (the high-voltage proximity switch 10 and the oil cylinder 9 can adopt the existing technology, which will not be repeated here).

[0025] In this embodiment, the material push rod is provided with a return groove for use with the return port assembly, and the base 6 is provided with a feed circuit for connecting the injection valve mechanism and the feed port assembly. The material enters the injection valve mechanism through the feed circuit and flows out of the return port assembly after passing through the return groove. Figure 1 As shown in FIG. 1 , a return groove is provided in the circumferential direction of the material push rod 1 , and the material enters the injection valve mechanism 5 through the feed port 13 , and flows back to the reflux joint 7 after passing through the return groove.

[0026] In this embodiment, the lower end of the base 6 is installed with a mold joint 3 used in conjunction with the inner sleeve, and the lower end of the base is provided with an end cover 4 installed in conjunction with the mold joint. The mold joint 3 is installed on the inner sleeve 7, and the end cover 4 is fixedly installed in conjunction with the base and used to limit the mold joint. The mold joint 3 is installed in conjunction with the inner sleeve 7, and is fixedly limited by the end cover 4 in conjunction with the base 6. A mold sealing ring 2 is provided on the mold joint 3 to ensure the sealing performance when used in conjunction with other components.

[0027] In this embodiment, the injection valve mechanism 5 includes an injection valve body 17, an ejector assembly installed in the injection valve body 17, and a valve needle assembly installed on the injection valve body. An ejector adjustment assembly for adjusting the installation position of the ejector assembly is provided at the end of the injection valve body 17, and the ejector assembly is used to axially tighten the valve needle assembly. An ejector assembly and a valve needle assembly that can be adjusted in the axial direction are provided inside the injection valve body 17, and the ejector assembly can adjust its overall position through the ejector adjustment assembly.

[0028] In this embodiment, the ejector assembly includes an ejector 19 that can be axially slidably adjusted and installed in the injection valve body, a guide seat 20 that is sleeved on the end of the ejector 19, and a spring 18 that is arranged between the guide seat 20 and the ejector 19. The ejector 19 has a "cross" structure in the axial direction. The end of the ejector 19 axially penetrates the guide seat 20. The spring 18 is sleeved on the ejector and one end of the spring 18 is pressed against the ejector, and the other end of the spring 18 is pressed against the end surface of the guide seat 20. Figure 4As shown, the overall cross-section of the ejector pin is a cross-shaped structure. The upper end of the ejector pin is used in conjunction with the ejector pin adjustment assembly, and the lower end forms a step structure for installation in conjunction with the guide seat 20. The spring sleeve is wrapped around the ejector pin 19 and the two ends are respectively installed in conjunction with the ejector pin and the guide seat. The guide seat can slide relative to the lower end of the ejector pin, and the movement of the valve needle assembly in the axial direction can drive the guide seat 20 to move.

[0029] In this embodiment, the valve needle assembly includes a valve sleeve 24 installed at the end of the injection valve body, a valve plate 26 arranged at the end of the valve sleeve 24, and a valve needle 23 installed in the valve sleeve 24. The valve needle 23 can slide back and forth along the axial direction of the valve sleeve. The valve plate 26 is provided with a valve plate opening used in conjunction with the valve needle. The axial movement of the valve needle is used to open or close the valve plate opening. The valve needle 23 can be slidably installed inside the valve sleeve 24 along the axial direction. A sealing ring 21 and a sealing seat 23 are arranged between the valve needle 23 and the valve sleeve 24 to ensure its sealing performance. The lower end of the valve needle is a conical structure. The valve needle 23 can move along the axial direction to open or close the valve plate opening of the valve plate 26.

[0030] In this embodiment, the valve sleeve 24 is provided with a valve sleeve opening 25 in the circumferential direction, and the material enters the valve sleeve through the valve sleeve opening 25 to push the valve needle to move in the axial direction; the ejector needle adjustment assembly includes an adjustment nut 14 installed at the end of the valve sleeve and an adjustment screw 15 installed on the valve sleeve, and the end of the adjustment screw 25 is pressed against the ejector needle. The valve sleeve openings 25 are evenly distributed in the circumferential direction of the valve sleeve 24 to facilitate the material to enter the interior. When the internal pressure of the valve sleeve 24 is sufficient, the valve needle 23 can be pushed to open the valve plate opening. The adjustment screw 25 cooperates with the adjustment nut 14 to facilitate the adjustment of the internal structure pressure, so as to facilitate use under various working conditions.

[0031] In this embodiment, the base 6 is provided with a positioning rod 11 for positioning and installing in cooperation with the inner sleeve 8. The positioning rod 11 is fixedly installed in cooperation with the inner sleeve 8 and the end of the positioning rod 11 extends to the material push rod limiting groove for circumferentially limiting the material push rod. Figure 2 As described above, the positioning rod 11 can adopt a positioning screw structure. After the positioning rod 11 is fixedly installed with the inner sleeve 8, its end extends into the material push rod limiting groove, so that the material push rod 1 will not rotate circumferentially and can only slide in the axial direction.

[0032] In this embodiment, the feed inlet assembly includes a first feed inlet and a second feed inlet with the same structure installed on the base; the return inlet assembly includes a first return inlet and a second return inlet with the same structure installed on the base. Figure 5 As described above, the two feed ports 13 with the same structure are symmetrically arranged relative to the material push rod 1, and the two return ports 7 also have the same structure and are symmetrically arranged relative to the material push rod.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A multi-component mixing injection nozzle, characterized in that: It includes a base, a push rod mechanism installed on the base, an inner sleeve installed in the base, an injection valve mechanism installed on the base, a feed port assembly and a return port assembly arranged on the base; the injection valve mechanism is installed on the side of the base to control the injection pressure, and the push rod mechanism is installed above the base to push out the mixed material; the injection valve mechanism includes an injection valve body, a ejector assembly installed in the injection valve body and a valve needle assembly installed on the injection valve body, and the end of the injection valve body is provided with an ejector adjustment assembly for adjusting the installation position of the ejector assembly, and the ejector assembly is used to axially tighten the valve needle assembly.

2. The multi-component mixing injection nozzle according to claim 1, characterized in that: The push rod mechanism includes an oil cylinder installed on a base and a material push rod used in conjunction with the oil cylinder. The lower end of the material push rod axially penetrates the inner sleeve and the material push rod can slide back and forth along the axial direction of the inner sleeve. A material push rod limiting groove for limiting is provided on the material push rod.

3. The multi-component mixing injection nozzle according to claim 2, characterized in that: The material push rod is provided with a return groove used in conjunction with the return port assembly, and the base is provided with a feed circuit for connecting the injection valve mechanism and the feed port assembly. The material enters the injection valve mechanism through the feed circuit and flows out of the return port assembly after passing through the return groove.

4. The multi-component mixing injection nozzle according to claim 3, characterized in that: A mold joint for use with the inner sleeve is installed at the lower end of the base, and an end cover for use with the mold joint is provided at the lower end of the base. The mold joint outer sleeve is installed on the inner sleeve, and the end cover is fixedly installed with the base and used to limit the mold joint.

5. The multi-component mixing injection nozzle according to claim 1, characterized in that: The ejector assembly includes an ejector that can be axially slidably adjusted and installed in the injection valve body, a guide seat that is sleeved on the end of the ejector, and a spring arranged between the guide seat and the ejector. The ejector has a "cross"-shaped cross-section along the axial direction, and the end of the ejector axially penetrates the guide seat. The spring is sleeved on the ejector and one end of the spring is pressed against the ejector, and the other end of the spring is pressed against the end face of the guide seat.

6. The multi-component mixing injection nozzle according to claim 5, characterized in that: The valve needle assembly includes a valve sleeve installed at the end of the injection valve body, a valve plate arranged at the end of the valve sleeve and a valve needle installed in the valve sleeve. The valve needle can slide back and forth along the axial direction of the valve sleeve. The valve plate is provided with a valve plate opening used to cooperate with the valve needle. The axial movement of the valve needle is used to open or close the valve plate opening.

7. The multi-component mixing injection nozzle according to claim 6, characterized in that: The valve sleeve is provided with a valve sleeve opening in the circumferential direction, and the material enters the valve sleeve through the valve sleeve opening to push the valve needle to move in the axial direction; the ejector needle adjustment assembly includes an adjusting nut installed at the end of the valve sleeve and an adjusting screw installed on the valve sleeve, and the end of the adjusting screw is pressed against the ejector needle.

8. The multi-component mixing injection nozzle according to claim 2, characterized in that: The base is provided with a positioning rod which is installed in cooperation with the inner sleeve for positioning. The positioning rod is fixedly installed in cooperation with the inner sleeve and the end of the positioning rod extends to the material push rod limiting groove for circumferentially limiting the material push rod.

9. The multi-component mixing injection nozzle according to claim 1, characterized in that: The feed port assembly comprises a first feed port and a second feed port with the same structure installed on a base; the return port assembly comprises a first return port and a second return port with the same structure installed on a base.

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