Vacuum material taking and blowing switching device

Abstract

The utility model discloses a pneumatic machine, and particularly relates to a vacuum material taking and blowing switching device. Comprising a valve body, the interior of the valve body is hollow to form a containing cavity, a sliding sleeve is arranged in the containing cavity, a valve element is arranged in the sliding sleeve in a sliding mode, an airflow channel communicated with the containing cavity is formed in the valve element, a first sealing ring is arranged on one side of the valve element, and a second sealing ring is arranged on the other side of the valve element. An end cover is arranged on one side of the valve body, a plug is arranged on the side, close to the end cover, of the valve element, a spring is arranged between the valve element and the sliding sleeve, and when the valve element moves in one direction, a single-side airflow channel of the valve body is sealed through the first sealing ring or the second sealing ring. The spring can push the valve element so as to drive the plug to seal the end cover airflow channel. A gas outlet of the valve element is changed from the original axial direction to the side direction, reciprocating motion of the valve element caused by reverse thrust during exhausting is reduced, and meanwhile accumulation of dust on the inner wall of the valve body is reduced.

Description

Technical Field

[0001] The utility model relates to the field of pneumatic machinery, in particular to a switching device for vacuum material taking and air blowing. Background Art

[0002] In the processing of electronic equipment, in order to improve the efficiency of picking and placing products, people use vacuum picking to achieve automatic and rapid picking and placing. When used in a dusty environment, it is necessary to switch between positive and negative pressures to clean the dust in the suction cup in time. However, the current switching valve is prone to reciprocating vibrations when blowing because the exhaust port of the valve core is consistent with the direction of the spring force, and a small part of the compressed gas leaks into the vacuum air path, reducing the utilization rate of the compressed air, thereby reducing the blowing effect of the switching valve. Summary of the invention

[0003] The utility model aims to provide a switching device for vacuum feeding and blowing to solve the problem that the current switching valve is prone to reciprocating vibration during blowing due to the consistent direction of the exhaust port hole of the valve core and the elastic force of the spring, and a small part of the compressed gas leaks into the vacuum air path, reducing the utilization rate of the compressed air, thereby reducing the blowing effect of the switching valve.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A device for switching between vacuum material taking and air blowing is provided, comprising a valve body, the interior of the valve body is hollow to form an accommodating chamber, a sliding sleeve is arranged in the accommodating chamber, a valve core is slidably arranged in the sliding sleeve, an air flow channel connected to the accommodating chamber is arranged in the valve core, a first sealing ring is arranged on one side of the valve core, a second sealing ring is arranged on the other side of the valve core, an end cover is arranged on one side of the valve body, a third sealing ring is arranged on the side of the end cover close to the valve body, a plug is arranged on the side of the valve core close to the end cover, a spring is arranged between the valve core and the sliding sleeve, when the valve core moves unidirectionally in the accommodating chamber, the first sealing ring or the second sealing ring closes the unilateral air flow channel of the valve body, and the spring can push the valve core and then drive the plug to close the air flow channel of the end cover.

[0006] As a preferred solution for a vacuum material removal and blowing switching device, the valve body is provided with a first threaded interface, a second threaded interface and a third threaded interface connected to the accommodating chamber, the first threaded interface and the third threaded interface are located on both sides of the valve body and are respectively connected to the vacuum air path and the blowing air path pipeline, the second threaded interface is located on the side of the valve body and is connected to the integrated suction cup pipeline, the sliding sleeve is used in conjunction with the valve core and the second threaded interface to separate the accommodating chamber to form a variety of air flow channels.

[0007] As a preferred solution for the vacuum material taking and blowing switching device, a plurality of air inlet holes are opened on the side of the air flow channel in the valve core close to the third thread interface, and a plurality of exhaust holes are opened on the side of the air flow channel in the valve core close to the second thread interface.

[0008] Beneficial effects of the utility model:

[0009] 1. The gas outlet in the valve core is changed from the original axial gas outlet to the side gas outlet, which can eliminate the reciprocating motion of the valve core caused by the reverse thrust during high-pressure exhaust, thereby reducing the leakage of high-pressure gas and improving the utilization rate of high-pressure gas.

[0010] 2. The gas outlet in the valve core is set on the side and the gas outlet is small, which can increase the gas velocity during blowing while reducing dust inhalation, thereby effectively reducing the accumulation of dust on the inner wall of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work.

[0012] Figure 1 It is a three-dimensional structural schematic diagram of a vacuum material taking and air blowing switching device described in an embodiment of the utility model.

[0013] Figure 2 It is a schematic diagram of the explosion structure of a vacuum material taking and air blowing switching device according to an embodiment of the utility model.

[0014] Figure 3 It is a cross-sectional structural schematic diagram of a vacuum material taking and air blowing switching device described in one embodiment of the utility model.

[0015] In the figure:

[0016] 1. Valve body; 2. Sleeve; 3. Valve core; 4. First sealing ring; 5. Second sealing ring; 6. End cover; 7. Third sealing ring; 8. Plug; 9. Spring. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0018] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0019] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is 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 orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0020] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1-3As shown, the utility model provides a technical solution: a device for switching between vacuum material taking and blowing, comprising a valve body 1, the interior of the valve body 1 is hollow to form a accommodating chamber, a sliding sleeve 2 is clamped in the middle of the accommodating chamber, a valve core 3 is slidably installed in the sliding sleeve 2, an air flow channel connected to the accommodating chamber is opened in the valve core 3, a first sealing ring 4 is clamped on the left side of the valve core 3, a second sealing ring 5 is clamped on the right side of the valve core 3, an end cover 6 is clamped on the right side of the valve body 1, a third sealing ring 7 is clamped on the left side of the end cover 6 that contacts the valve body 1 to seal the connection between the end cover 6 and the valve body 1, a plug 8 is clamped on the right end face of the valve core 3, an annular protrusion is arranged on the right side of the valve core 3, and an annular protrusion on the valve core 3 A spring 9 is sleeved between the protrusion and the sliding sleeve 2, and the sliding sleeve 2 is used in conjunction with the valve core 3 movable on both sides to separate the accommodating chamber to form an air-tight and vacuum-sealed airflow channel; during blowing, the valve core 3 is compressed when it moves to the left in the accommodating chamber due to gas pressure, and the valve core 3 moving to the left drives the first sealing ring 4 to move to the left, thereby making the first sealing ring 4 and the left side of the valve core 3 abut against the accommodating chamber on the left side of the valve body 1, thereby sealing the airflow channel on the left side of the accommodating chamber of the valve body 1. After the blowing is completed, the valve core 3 is pushed by the restoring force of the spring 9, and when the valve core 3 moves to the right in the accommodating chamber, it drives the second sealing ring 5 on the valve core 3 to move to the right, thereby making the second sealing ring 5 and the plug 8 abut against the end cover 6 to close the airflow channel on the right side of the valve body 1.

[0022] like Figure 2 As shown, a first threaded interface connected to the accommodating chamber is provided on the left side of the valve body 1, a third threaded interface connected to the accommodating chamber is provided on the right side of the valve body 1, and a second threaded interface connected to the accommodating chamber is provided on the left front side of the valve body 1. The first threaded interface is connected to the vacuum air path pipeline, the third threaded interface is connected to the air blowing pipeline, and the second threaded interface is connected to the integrated suction cup pipeline; when the integrated suction cup takes material, the spring 9 pushes the valve core 3 and the second sealing ring 5 to the right to make them fit tightly with the inner side of the end cover 6 to form an air hole seal, and the switching valve maintains a normally closed state.

[0023] like Figure 3 As shown, four air inlet holes are equidistantly arranged in a ring shape on the right side of the air flow channel in the valve core 3 near the third thread interface, and four air exhaust holes are equidistantly arranged in a ring shape on the left side of the air flow channel in the valve core 3 near the second thread interface; when blowing, the high-pressure gas blown into the blowing pipeline connected to the third thread interface enters the air flow channel inside the valve core 3 through the four air inlet holes on the right side of the valve core 3, and is transported to the second thread interface through the four exhaust holes on the left side of the valve core 3, and the high-pressure gas enters the integrated suction cup through the second thread interface to complete the blowing action.

[0024] Working principle: When the integrated suction cup is picking up materials, the spring 9 pushes the valve core 3 and the second sealing ring 5 to the right to make them fit tightly with the inner side of the end cover 6 to form an air hole seal, and the switching valve maintains a normally closed state. When the picking mechanism transports the product to the specified position, the air path of the vacuum air path pipeline connected to the first tooth interface is closed, and the air path of the blowing pipeline connected to the third tooth interface is opened. The high-pressure gas enters the third tooth interface through the blowing pipeline to increase the internal pressure on the right side of the accommodating cavity of the valve body 1. Under the action of air pressure, the valve core 3 moves to the left and compresses the spring 9 until the first sealing ring 4 of the valve core 3 fits tightly with the inner side of the valve body 1 to further close the vacuum air path on the left side of the valve body 1. At the same time, the right side of the valve core 3 is separated from the end cover. 6, high-pressure gas enters the right side of the accommodating chamber, and the high-pressure gas enters the air flow channel inside the valve core 3 through the four air inlet holes on the right side of the valve core 3, and is transported to the second tooth interface through the four exhaust holes on the left side of the valve core 3, and the high-pressure gas enters the integrated suction cup through the second tooth interface to complete the blowing action. Since the high-pressure gas pressure force is greater than the elastic force of the spring 9, the valve core 3 always keeps the blowing air path unobstructed, and at the same time further closes the vacuum air path. When the blowing is completed, the valve core 3 is pushed by the resetting force of the spring 9, and the valve core 3 moves to the right in the accommodating chamber, driving the second sealing ring 5 on the valve core 3 to move to the right, thereby making the second sealing ring 5 and the plug 8 abut against the end cover 6 to close the blowing air path on the right side of the valve body 1.

[0025] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A device for switching between vacuum feeding and air blowing, characterized in that: The invention comprises a valve body (1), wherein the interior of the valve body (1) is hollow to form an accommodating cavity, a sliding sleeve (2) is arranged in the accommodating cavity, a valve core (3) is slidably arranged in the sliding sleeve (2), an air flow channel connected to the accommodating cavity is arranged in the valve core (3), a first sealing ring (4) is arranged on one side of the valve core (3), and a second sealing ring (5) is arranged on the other side of the valve core (3), an end cover (6) is arranged on one side of the valve body (1), a plug (8) is arranged on the side of the valve core (3) close to the end cover (6), a spring (9) is arranged between the valve core (3) and the sliding sleeve (2), and when the valve core (3) moves in one direction, the first sealing ring (4) or the second sealing ring (5) closes the single-side air flow channel of the valve body (1), and the spring (9) can push the valve core (3) and thereby drive the plug (8) to close the air flow channel of the end cover (6).

2. The vacuum material taking and air blowing switching device according to claim 1 is characterized in that: The valve body (1) is provided with a first threaded interface, a second threaded interface and a third threaded interface connected to the accommodating cavity; the first threaded interface and the third threaded interface are located on both sides of the valve body (1) and are respectively connected to the vacuum air path and the blowing air path pipeline; the second threaded interface is located on the side of the valve body (1) and is connected to the integrated suction cup pipeline; the sliding sleeve (2) cooperates with the valve core (3) and the second threaded interface to separate the accommodating cavity to form a plurality of air flow channels.

3. The vacuum material taking and air blowing switching device according to claim 2 is characterized in that: A third sealing ring (7) is provided on the side of the end cover (6) close to the valve body (1) to seal the valve body (1) and the end cover (6); a plurality of air inlet holes are provided on the side of the air flow channel in the valve core (3) close to the third thread interface; and a plurality of air exhaust holes are provided on the side of the air flow channel in the valve core (3) close to the second thread interface.

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