An adsorption device for preventing vacuum breakage

Abstract

The present invention discloses an adsorption device for preventing vacuum breakage. By providing a cylinder body with an inner cavity and arranging a piston body in the cylinder body, a vacuum suction cup is arranged at the free end of the piston body, and the vacuum suction cup is communicated with the inner cavity of the cylinder body through the piston body; and an air nozzle joint communicated with the inner cavity of the cylinder body is arranged on the outer peripheral wall of the cylinder body. When the gas in the inner cavity of the cylinder body is extracted from the air nozzle joint, an adsorption force is generated at the vacuum suction cup to adsorb the packaging plastic bag of the clothes; and, after the air pressure in the inner cavity of the cylinder body is pumped out, the air pressure is lower than the external air pressure, forcing the piston body to move into the inner cavity of the cylinder body, sucking the packaging plastic bag adsorbed by the vacuum suction cup into the cylinder body, so that an included angle is formed between the part of the packaging plastic bag adsorbed by the cylinder body and the part not adsorbed. In this way, during the moving process, the part of the packaging plastic bag adsorbed by the vacuum suction cup can be prevented from swinging with the movement of the manipulator, avoiding the vacuum breakage of the vacuum suction cup and the inability to adsorb the packaging plastic bag for packaging clothes.

Description

Technical Field

[0001] The present invention relates to the technical field of adsorption picking devices, and particularly relates to an adsorption device for preventing vacuum breakage. Background Art

[0002] In the circulation of clothing, to avoid clothes being scattered, clothing is generally packaged with packaging plastic bags and then carried and transferred.

[0003] To achieve efficient handling, Chinese Patent 2017101836461 discloses a grabbing device for thin clothing packaging plastic bags to replace manual transfer. Since clothes are flexible items, after being grabbed and carried, the packaging plastic bag is likely to deform due to the deformation of the clothing, resulting in ineffective grabbing. During the handling process, the drooping part of the clothes will drive the plastic paper to swing, causing the suction cup to break vacuum and unable to adsorb the packaging plastic bag, leading to the problem of clothing dropping.

[0004] In response to this, the solution provided by Chinese Patent 2017101836461 is to use multiple suction cups to adsorb the clothing package in all directions to avoid the problem of the plastic bag dropping during handling. However, this structure is too complex and not conducive to practical application. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, the main object of the present invention is to provide an adsorption device for preventing vacuum breakage, which can adsorb the packaging plastic bag with clothes inside, is not easy to drop, and has a simple structure and is easy to implement.

[0006] To achieve the above object, the adsorption device for preventing vacuum breakage proposed by the present invention includes:

[0007] A cylinder body, which has an inner cavity with an opening;

[0008] A piston body, which is movably arranged in the inner cavity of the cylinder body, and a vacuum suction cup is arranged at its lower end. The vacuum suction cup is communicated with the inner cavity of the cylinder body through the piston body;

[0009] An end cover, which is arranged at the lower opening of the cylinder body;

[0010] A gas nozzle joint, which is arranged on the outer wall of the cylinder body and is communicated with the inner cavity of the cylinder body;

[0011] When the gas in the cylinder body is pumped out from the suction nozzle, the piston body drives the vacuum suction cup to move into the inner cavity of the cylinder body.

[0012] Optionally, the piston body is hollow, and an elastic member is arranged in its hollow area. The elastic member is compressed when the piston body moves into the inner cavity of the cylinder body.

[0013] Optionally, a first flange and a second flange are respectively provided on the outer periphery of the upper end and the outer periphery of the lower end of the piston body, and the outer peripheral walls of the first flange and the second flange are in sliding contact with the inner cavity wall of the cylinder block;

[0014] The first flange is recessed with an annular groove, a sealing ring is arranged in the annular groove, and a part of the sealing ring protrudes out of the annular groove to contact the inner cavity wall of the cylinder block.

[0015] Optionally, an avoidance area is provided on the outer wall of the cylinder block, and the first end of the air nozzle connector passes through and is connected to the piston body, and is communicated with the hollow area of the piston.

[0016] Optionally, the air nozzle connector is arranged in an L shape, and its second end is arranged upward.

[0017] Optionally, an opening is provided at the upper end of the cylinder block, and a sealing block is arranged at the opening.

[0018] Optionally, the sealing block and the cylinder block are in threaded connection and cooperation.

[0019] Optionally, the end cover and the cylinder block are in threaded connection and cooperation.

[0020] The adsorption device provided by the present invention is provided with a cylinder block with an inner cavity, and a piston body is arranged in the cylinder block. The vacuum suction cup is arranged at the free end of the piston body, and the vacuum suction cup is communicated with the inner cavity of the cylinder block through the piston body; and an air nozzle connector communicated with the inner cavity of the cylinder block is arranged on the outer peripheral wall of the cylinder block.

[0021] When the gas in the inner cavity of the cylinder block is pumped out from the air nozzle connector, an adsorption force is generated at the vacuum suction cup to adsorb the packaging plastic bag of the clothes; and, after the air pressure in the inner cavity of the cylinder block is pumped out, the air pressure is lower than the external air pressure, forcing the piston body to move into the inner cavity of the cylinder block, and sucking the packaging plastic bag adsorbed by the vacuum suction cup into the cylinder block, so that an included angle is formed between the part of the packaging plastic bag adsorbed by the cylinder block and the part not adsorbed. In this way, during the moving process, the part of the packaging plastic bag adsorbed by the vacuum suction cup can be prevented from swinging with the movement of the manipulator, and the vacuum suction cup can be prevented from breaking the vacuum and failing to suck the packaging plastic bag for packaging clothes. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of an embodiment of the anti-breaking vacuum adsorption device of the present invention;

[0023] Figure 2 It is a cross-sectional view of an embodiment of the anti-breaking vacuum adsorption device of the present invention;

[0024] Figure 3 It is a schematic diagram of the state of adsorbing the packaging plastic paper for packaging clothes in an embodiment of the anti-breaking vacuum adsorption device of the present invention. Detailed Embodiments

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to the attached Figure 1 In the embodiment of the present invention, an anti-breaking vacuum adsorption device is proposed. The anti-breaking vacuum adsorption device includes: a cylinder body 100, a piston body 200, a vacuum suction cup 300, and a nozzle joint 400.

[0027] The cylinder body 100 has an inner cavity with an opening, and the opening of the inner cavity faces downward. The piston body 200 is movably arranged in the cylinder body 100, and the vacuum suction cup 300 is arranged at the lower end of the piston body 200. The piston body 200 is hollowly arranged so that the vacuum suction cup 300 communicates with the inner cavity of the cylinder body 100. An end cover 110 is arranged at the opening of the inner cavity of the cylinder body 100 to enclose the piston body 200 in the inner cavity of the cylinder body 100. The nozzle joint 400 is arranged on the outer wall of the cylinder body 100, one end of which communicates with the inner cavity of the cylinder body 100, and the other end is externally connected to a vacuum pumping device through a trachea.

[0028] As Figure 3 shown, when it is necessary to adsorb the packaging plastic bag 500 containing clothes 510, the gas inside the cylinder body 100 is pumped out through the vacuum pumping device to form a negative pressure on the adsorption surface of the vacuum suction cup 300 to suck the packaging plastic bag 500; at the same time, after the air in the inner cavity of the cylinder body 100 is pumped out, the air pressure is lower than the external air pressure, forcing the piston body 200 to move into the inner cavity of the cylinder body 100, sucking the packaging plastic bag 500 adsorbed by the vacuum suction cup 300 into the cylinder body, so that an included angle is formed between the adsorbed part 600a and the un-adsorbed part 600b of the packaging plastic bag 500 by the cylinder body. In this way, during the handling process, the adsorbed part 600a of the packaging plastic bag 500 by the vacuum suction cup will not swing with the movement of the manipulator, avoiding the breaking of the vacuum of the vacuum suction cup 300 and being unable to suck the packaging plastic bag 500 containing clothes 510.

[0029] Compared with the prior art, the adsorption device provided by the present invention has a simple structure and is easy to implement.

[0030] Moreover, the cylinder body 100 has a large volume, which can improve the vacuum degree of the adsorption device and delay the speed of the decrease in the vacuum degree of the adsorption device, enabling the adsorption device to effectively adsorb the packaging plastic bag 500 during the picking and handling stages and avoiding dropping after picking.

[0031] Specifically, in the embodiment of the present invention, a first flange 200a and a second flange 200b are respectively provided on the outer periphery of the upper end and the outer periphery of the lower end of the piston body 200, and the outer peripheral walls of the first flange 200a and the second flange 200b are in sliding contact with the inner cavity wall of the cylinder block 100. At the same time, an annular groove is recessed in the first flange 200a, and a sealing ring 201 is arranged in the annular groove, and a part of the sealing ring 201 protrudes from the annular groove and contacts the inner cavity wall of the cylinder block 100.

[0032] Thus, the inner cavity of the cylinder block 100 is divided into two parts by the sealing ring 201, forming an upper inner cavity 100a and a lower inner cavity 100b. Among them, the upper inner cavity 100a is a relatively closed cavity, and the vacuum suction cup 300 is communicated with the upper inner cavity 100a through the hollow piston body 200; the lower inner cavity 100b is an open cavity.

[0033] The air nozzle joint 400 is structured in an L shape, and its horizontal end interface is arranged on the side wall of the piston body 200 and communicated with the upper inner cavity 100a of the cylinder block 100 through the hollow area of the piston body 200, and its vertical end interface is arranged upward along the axis of the cylinder block 100. An avoidance area 100c is arranged on the peripheral wall of the cylinder block 100, and the air nozzle joint 400 extends out of the cylinder block 100 from the avoidance area 100c.

[0034] When the vacuum pumping device is started, the gas in the upper inner cavity 100a of the cylinder block 100 is pumped out. While generating negative pressure adsorption on the adsorption surface of the vacuum suction cup 300, it also forces the piston body 200 to drive the vacuum suction cup 300 to move into the lower inner cavity 100b of the cylinder block 100, and sucks the adsorbed part 600a of the packaging plastic bag 500 into the inner cavity of the cylinder block 100, avoiding the adsorbed part of the packaging plastic bag 500 from swinging during the handling process, resulting in the vacuum breaking of the vacuum suction cup 300 and affecting the adsorption device to maintain the adsorption state.

[0035] Optionally, in the embodiment of the present invention, the hollow area of the piston body 200 is enlarged, and an elastic member 210 is arranged in the hollow area. When the piston body 200 is encapsulated in the cylinder block 100, both ends of the elastic member 210 respectively abut against the inside of the upper end of the cylinder block 100 and the piston body 200. In this way, when the piston body 200 moves towards the upper inner cavity 100a of the cylinder block 100, it will squeeze the elastic member 210 to store energy; when the vacuum pumping stops, the compressed spring applies a reverse force to the piston body 200, ejecting the piston body 200 outwards to ensure that the piston body 200 can quickly reset.

[0036] Optionally, in the embodiment of the present invention, an opening is also provided at the upper end of the cylinder block 100, and a sealing block 120 is arranged at the opening. The sealing block 120 and the cylinder block 100 together form a semi-closed inner cavity. In this way, it is convenient for the assembly and disassembly of the adsorption device and convenient for the maintenance of the adsorption device.

[0037] Furthermore, in the embodiment of the present invention, the sealing block 120 and the cylinder block 100 are in threaded connection and cooperation, and the end cover 110 and the cylinder block 100 are also in threaded connection and cooperation. Specifically, an external thread is provided on the inner wall of the sealing block 120, and an internal thread is provided on the inner peripheral wall of the upper end of the cylinder block 100. During assembly, the sealing block 120 is inserted into the upper end opening of the cylinder block 100, and the sealing block 120 is tightened to complete the sealing cooperation between the sealing block 120 and the cylinder block 100. Similarly, an internal thread is provided on the inner periphery of the bayonet of the end cover 110, and an external thread is provided on the outer periphery of the lower end of the cylinder block 100. After the end cover 110 is buckled to the lower end opening of the cylinder block 100, it is directly tightened to complete the tight cooperation between the end cover 110 and the cylinder block 100. By adopting threaded connection and cooperation, it is convenient for the assembly, disassembly and maintenance of the adsorption device.

[0038] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any minor modifications, equivalent replacements, and improvements made to the above embodiments based on the technical essence of the present invention shall be included in the protection scope of the technical solution of the present invention.

Claims

1. An adsorption device for preventing vacuum breakage, characterized in that, include a cylinder having an inner cavity with an opening; a piston body, movably disposed in the inner cavity of the cylinder body, with a vacuum suction cup disposed at its lower end, the vacuum suction cup being in communication with the inner cavity of the cylinder body through the piston body; an end cover disposed at the lower opening of the cylinder body; a gas nozzle joint, which is arranged on the outer wall of the cylinder body and communicates with the inner cavity of the cylinder body; When the air nozzle joint extracts the gas in the cylinder, the piston body drives the vacuum suction cup to move into the inner cavity of the cylinder; The piston body is hollow, and an elastic member is arranged in the hollow area thereof, and the elastic member is compressed when the piston body moves into the inner cavity of the cylinder body; The upper and lower outer peripheries of the piston body are respectively provided with a first flange and a second flange, and the outer peripheral walls of the first and second flanges are in sliding contact with the inner cavity wall of the cylinder body; An annular groove is recessed in the first flange, a sealing ring is arranged in the annular groove, and a portion of the sealing ring protrudes from the annular groove and contacts the inner cavity wall of the cylinder body.

2. The vacuum-breaking prevention adsorption device according to claim 1, wherein, An escape area is provided on the outer wall of the cylinder body, and the first end of the air nozzle joint passes through and is connected to the piston body and communicates with the hollow area of the piston.

3. The vacuum-breaking prevention adsorption device according to claim 2, characterized in that, The air nozzle joint is arranged in an L shape, with the second end thereof facing upward.

4. The vacuum-breaking adsorption device according to any one of claims 1 to 3, characterized in that, An opening is provided at the upper end of the cylinder body, and a sealing block is provided at the opening.

5. The anti-breaking vacuum adsorption device according to claim 4, wherein, The sealing block is connected and matched with the cylinder body through threads.

6. The vacuum-breaking prevention adsorption device according to claim 5, wherein, The end cover is connected with the cylinder body through threads.

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