Dispensing head of dispensing machine

Abstract

The utility model relates to the technical field of dispensing devices, and discloses a dispensing head of a dispensing machine. The screw valve comprises a motor, a valve body and a screw rod, the valve body is fixedly connected with the connecting base and located on the lower side of the connecting base, a feeding hole and a feeding hole are formed in the valve body, the feeding hole penetrates through the valve body in the vertical direction, the feeding hole is formed in the side face of the valve body and communicates with the feeding hole, the motor is fixed to the connecting base, and the motor is in driving connection with the screw rod; the screw rod rotatably penetrates into the feeding hole; the glue nozzle is located on the lower side of the valve body, the glue nozzle is connected with the valve body, and the glue nozzle covers the feeding hole. The dispensing head of the dispensing machine is provided with the screw rod valve, and after solder paste enters through the feeding hole, the motor included in the screw rod valve drives the screw rod to rotate, so that the solder paste can be stably pushed to the glue nozzle from the feeding hole, the solder paste is stably output, and the conditions of cutoff and the like are not easy to occur.

Description

Technical Field

[0001] The utility model relates to the technical field of glue dispensing devices, in particular to a glue dispensing head of a glue dispensing machine. Background Art

[0002] The dispensing machines on the market are mainly equipped with dispensing heads with jet valves. In actual applications, dispensing heads with jet valves are suitable for dispensing UV glue, but are prone to problems such as flow interruption when dispensing solder paste. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the background technology.

[0004] The utility model provides a glue dispensing head of a glue dispensing machine, comprising:

[0005] Connecting seat;

[0006] A screw valve, the screw valve comprising a motor, a valve body and a screw rod, the valve body being fixedly connected to the connecting seat, the valve body being located at the lower side of the connecting seat, a feeding hole and a feed hole being provided on the valve body, the feeding hole vertically penetrating the valve body, the feed hole being provided at the side of the valve body, the feed hole being communicated with the feeding hole, the motor being fixed on the connecting seat, the motor being drivingly connected to the screw rod, and the screw rod being rotatably inserted into the feeding hole;

[0007] A glue nozzle, the glue nozzle is located at the lower side of the valve body, the glue nozzle is connected to the valve body, and the glue nozzle covers the feed hole.

[0008] The beneficial effects of the utility model are as follows: the dispensing head of the dispensing machine is equipped with a screw valve. After the solder paste enters through the feed hole, the motor included in the screw valve itself drives the screw rod to rotate, which can stably push the solder paste from the feed hole to the glue nozzle, stably output the solder paste, and is not prone to interruption of flow.

[0009] As some sub-solutions of the above technical solution, a buffer structure is provided on one side of the spiral rod adjacent to the nozzle, and the buffer structure is used to balance the discharge pressure of the nozzle.

[0010] As some sub-schemes of the above technical scheme, the buffer structure includes a sliding hole arranged on the spiral rod, a gasket sliding along the sliding hole, a sealing ring closing the gap between the gasket and the sliding hole, and a spring arranged in the sliding hole, the sliding hole is opened on the side of the spiral rod adjacent to the nozzle, the spring is located on the side of the gasket facing away from the orifice, and the spring provides a thrust toward the orifice for the gasket.

[0011] As some sub-solutions of the above technical solution, the middle part of the side of the gasket facing away from the spring is concave.

[0012] As some sub-solutions of the above technical solution, a semicircular sealing groove is provided on the outer periphery of the gasket, and the sealing ring is installed inside the sealing ring.

[0013] As some sub-schemes of the above technical scheme, the dispensing head of the dispensing machine also includes a feed pipe, a feed connecting pipe and a connecting head. The feed pipe is fixedly connected to the connecting seat, one end of the feed connecting pipe is inserted into the feed hole, and the connecting head includes a thin-walled tube, an axis clamp and a locking screw. The locking screw locks the axis clamp so that the axis clamp clamps the thin-walled tube at the lower side opening of the feed pipe, and the lower end of the thin-walled tube is inserted into the other end of the feed connecting pipe.

[0014] As some sub-solutions of the above technical solution, the thin-walled tube is a thin-walled aluminum tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 It is a structural schematic diagram of an embodiment of a glue dispensing head of a glue dispensing machine;

[0017] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0018] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0019] Figure 4 Schematic diagram of the structure of the gasket and the sealing ring.

[0020] In the accompanying drawings: 1-connecting seat;

[0021] 21-valve body; 22-screw rod; 221-sliding hole; 23-motor;

[0022] 3- Nozzle;

[0023] 41-gasket; 42-sealing ring; 43-spring;

[0024] 51-feeding pipe; 52-feeding connecting pipe; 53-connecting head; 531-shaft clamp; 532-thin-walled tube. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present utility model, the meaning of "several" is an indefinite quantity, the meaning of "multiple" is more than two, "greater than", "less than", "exceed" and the like are understood as not including the number itself, and "above", "below", "within" and the like are understood as including the number itself. If there is a description of the first and the second, it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features. The "and / or" that appears in the full text indicates three parallel solutions. For example, A and / or B indicates the solution satisfied by A, the solution satisfied by B, or the solution satisfied by both A and B.

[0028] In the description of the utility model, if there is a short sentence containing multiple parallel features, the attributive defines the closest feature, for example: B, C, and E connected to D are arranged on A, which means that B is arranged on A and E is connected to D, and does not constitute a limitation on C; but attributives that indicate the relationship between features, such as "set at intervals" and "arranged in a ring", do not belong to this category. If the word "all" is preceded by an attributive, it means that all the features in the short sentence are limited, such as B, C, and D are all arranged on A, which means that B, C, and D are all arranged on A. For a sentence with an omitted subject, the omitted subject is the subject of the previous sentence, that is, B is arranged on A, including C, which means that B is arranged on A and A includes C.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] Combine the following Figures 1 to 4 The embodiments of the present utility model are described.

[0031] This embodiment relates to a dispensing head of a dispensing machine, comprising: a connecting seat 1, a screw valve, and a glue nozzle 3;

[0032] The screw valve comprises a motor 23, a valve body 21 and a screw rod 22, wherein the valve body 21 is fixedly connected to the connecting seat 1, the valve body 21 is located at the lower side of the connecting seat 1, a feeding hole and a feed hole are provided on the valve body 21, the feeding hole vertically penetrates the valve body 21, the feed hole is provided on the side of the valve body 21, the feed hole is communicated with the feeding hole, the motor 23 is fixed on the connecting seat 1, the motor 23 is drivingly connected to the screw rod 22, and the screw rod 22 is rotatably inserted into the feeding hole;

[0033] The glue nozzle 3 is located at the lower side of the valve body 21 , the glue nozzle 3 is connected to the valve body 21 , and the glue nozzle 3 covers the feed hole.

[0034] The dispensing head of the dispensing machine is equipped with a screw valve. After the solder paste enters through the feed hole, the motor 23 included in the screw valve itself drives the screw rod 22 to rotate, which can stably push the solder paste from the feed hole to the nozzle 3, stably output the solder paste, and is not prone to interruption.

[0035] A buffer structure is provided on one side of the spiral rod 22 adjacent to the nozzle 3, and the buffer structure is used to balance the discharge pressure of the nozzle 3. The buffer structure is configured to reduce the discharge pressure fluctuation at the nozzle 3 when the feed pressure changes, thereby increasing the discharge stability of the nozzle 3.

[0036] The buffer structure includes a sliding hole 221 provided on the spiral rod 22, a gasket 41 sliding along the sliding hole 221, a sealing ring 42 closing the gap between the gasket 41 and the sliding hole 221, and a spring 43 provided in the sliding hole 221. The sliding hole 221 is provided on the side of the spiral rod 22 adjacent to the glue nozzle 3. The spring 43 is located on the side of the gasket 41 facing away from the orifice. The spring 43 provides a thrust toward the orifice for the gasket 41. The sealing ring 42 closes the gap between the gasket 41 and the sliding hole 221, so that the solder paste cannot pass over the gasket 41 and enter the sliding hole 221. When the pressure of the solder paste at the discharge port of the glue nozzle 3 is relatively large, the solder paste can push the gasket 41, so that the gasket 41 overcomes the elastic force of the spring 43 to move, increase the space for accommodating the solder paste, and reduce the discharge pressure. On the contrary, when the pressure at the discharge port decreases, the spring 43 can push the gasket 41 to compress the space at the discharge port, thereby increasing the discharge pressure. In this way, the glue discharge pressure can be kept relatively stable, making it difficult for the glue to be interrupted.

[0037] The middle part of the side of the gasket 41 facing away from the spring 43 is concave. The middle part of the gasket 41 is concave, and the force exerted on the sealing ring 42 when bearing the glue discharge pressure of the solder paste is small, and the solder paste is not easy to leak through the sealing ring 42.

[0038] The outer periphery of the gasket 41 is provided with a semicircular sealing groove, and the sealing ring 42 is installed in the sealing ring 42. Providing the sealing groove on the outer periphery of the gasket 41 is conducive to keeping the sealing ring 42 and the gasket 41 integral, and it is not easy to leak when the gasket 41 moves.

[0039] The dispensing head of the dispensing machine also includes a feed pipe 51, a feed connection pipe 52 and a connector 53. The feed pipe 51 is fixedly connected to the connection seat 1. One end of the feed connection pipe 52 penetrates the feed hole. The connector 53 includes a thin-walled tube 532, an axis clamp 531 and a locking screw (not shown in the figure). The locking screw locks the axis clamp 531 so that the axis clamp 531 clamps the thin-walled tube 532 at the lower side of the feed pipe 51, and the lower end of the thin-walled tube 532 penetrates the other end of the feed connection pipe 52. The thin-walled tube 532 is clamped outside the feed pipe 51 by the axis clamp 531, which is conducive to the thin-walled tube 532 being able to better adapt to the changes in the shape of the tube mouth of the feed pipe 51 and not easy to leak. The thin-walled tube 532 is a thin-walled aluminum tube. The use of aluminum tubes for the thin-walled tube 532 is conducive to reducing costs.

[0040] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. The dispensing head of the dispensing machine is characterized by: include: Connecting seat (1); A screw valve, the screw valve comprising a motor (23), a valve body (21) and a screw rod (22), the valve body (21) being fixedly connected to the connecting seat (1), the valve body (21) being located at the lower side of the connecting seat (1), the valve body (21) being provided with a feeding hole and a feed hole, the feeding hole vertically penetrating the valve body (21), the feed hole being arranged on the side of the valve body (21), the feed hole being communicated with the feeding hole, the motor (23) being fixed on the connecting seat (1), the motor (23) being drivingly connected to the screw rod (22), and the screw rod (22) being rotatably inserted into the feeding hole; A glue nozzle (3), the glue nozzle (3) is located at the lower side of the valve body (21), the glue nozzle (3) is connected to the valve body (21), and the glue nozzle (3) covers the feed hole.

2. The dispensing head of the dispensing machine according to claim 1, characterized in that: A buffer structure is provided on one side of the spiral rod (22) adjacent to the glue nozzle (3), and the buffer structure is used to balance the discharge pressure of the glue nozzle (3).

3. The dispensing head of the dispensing machine according to claim 2, characterized in that: The buffer structure comprises a sliding hole (221) arranged on the spiral rod (22), a gasket (41) sliding along the sliding hole (221), a sealing ring (42) closing a gap between the gasket (41) and the sliding hole (221), and a spring (43) arranged in the sliding hole (221); the sliding hole (221) is opened on a side of the spiral rod (22) adjacent to the nozzle (3); the spring (43) is located on a side of the gasket (41) facing away from the orifice; the spring (43) provides a thrust for the gasket (41) toward the orifice.

4. The dispensing head of the dispensing machine according to claim 3, characterized in that: The middle portion of the side surface of the gasket (41) facing away from the spring (43) is concave.

5. The dispensing head of the dispensing machine according to claim 4, characterized in that: A semicircular sealing groove is provided on the outer periphery of the gasket (41), and the sealing ring (42) is installed inside the sealing ring (42).

6. The dispensing head of the dispensing machine according to claim 1, characterized in that: The dispensing head of the dispensing machine further comprises a feed pipe (51), a feed connecting pipe (52) and a connecting head (53); the feed pipe (51) is fixedly connected to the connecting seat (1); one end of the feed connecting pipe (52) penetrates into the feed hole; the connecting head (53) comprises a thin-walled tube (532), an axis clamp (531) and a locking screw; the locking screw locks the axis clamp (531) so that the axis clamp (531) clamps the thin-walled tube (532) at the lower side opening of the feed pipe (51); and the lower end of the thin-walled tube (532) penetrates into the other end of the feed connecting pipe (52).

7. The dispensing head of the dispensing machine according to claim 6, characterized in that: The thin-walled tube (532) is a thin-walled aluminum tube.

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