Vacuum adsorption device and wide-width housing thereof

Abstract

The present invention discloses a wide-width shell of a vacuum adsorption device, wherein the shell (1) is a hollow extruded profile, and an air suction cavity (11) extending along the length direction of the shell (1) is formed inside the shell (1), and a plurality of air vents (12) connected to the air suction cavity (11) are provided on the bottom surface of the shell (1), and reinforcing ribs (13) extending along the length direction are formed inside the shell (1) to divide the air suction cavity (11) into at least two sub-air suction cavities along the width direction, and an opening (14) connecting two adjacent sub-air suction cavities is provided on the reinforcing ribs (13). The present invention can ensure as high an adsorption efficiency as possible without increasing the cost too much, while providing a wide adsorption bottom surface and good structural strength. The present invention also discloses a vacuum adsorption device including the above-mentioned wide-width shell.

Description

Technical Field

[0001] The invention belongs to the technical field of vacuum grasping, and in particular relates to a vacuum adsorption device and a large-width shell thereof. Background Art

[0002] Mobile grasping equipment is required in warehousing, logistics and packaging lines. The grasping equipment is equipped with a vacuum adsorption device. The vacuum adsorption device forms a temporary sealed space after contacting the object to be sucked. By extracting or thinning the air in the sealed space, a pressure difference between the inside and the outside is generated to adsorb the object and move the object to the required position.

[0003] In the related art, the vacuum generator of the vacuum adsorption device adopts a jet vacuum generating tube, which is installed in a shell. The shell is in the shape of a rectangular parallelepiped, and the interior is an air suction chamber. The bottom surface of the shell is provided with a plurality of vents connected to the air suction chamber. A sealing member is provided on the bottom surface of the shell, and a plurality of adsorption through holes corresponding to each vent are provided on the sealing member. The air inlet and air outlet of the jet vacuum generating tube are arranged outside the shell. The jet vacuum generating tube uses compressed air to eject a high-speed jet through it, and sucks away the gas in the air suction chamber, so that the air suction chamber forms a very low vacuum degree. At the same time, the adsorption through holes on the sealing member form a very low vacuum degree to adsorb the workpiece.

[0004] In the application scenarios of the vacuum adsorption device, sometimes it is necessary to adsorb workpieces with a larger width. In this case, the vacuum adsorption device needs to have a larger width adsorption surface. In order to ensure the overall adsorption force of the bottom surface of the shell, ventilation holes need to be arranged on the entire bottom surface of the shell. If the width of the adsorption surface is to be increased, the width of the shell must be increased. In order to ensure the strength of the shell, the height of the shell also needs to be increased accordingly. However, the suction cavity inside the shell will also increase accordingly. The increase in the suction cavity will increase the time required for the formation and release of the vacuum degree, which will increase the time for the workpiece to be absorbed and released, and reduce the working efficiency of the vacuum adsorption device. Therefore, the height of a shell with a large width must be made relatively small to minimize the volume of the suction cavity.

[0005] Since extruded profiles have the advantages of low cost, light weight, easy sealing, and compact structure, the shell of the vacuum adsorption device is preferably made of extruded profiles. Limited by the extrusion molding process, the cross-sectional dimensions of the extruded profile in any width direction are consistent. When the width of the profile is too large and the height is small, in order to ensure its structural strength, reinforcing ribs must be set in the middle of the extruded profile. However, the added reinforcing ribs will divide the interior of the shell into several independent and non-interconnected cavities. In order to ensure the overall adsorption force of the bottom surface of the shell, only one vacuum generator can be set in each cavity in the shell, which will undoubtedly greatly increase the cost of the vacuum adsorption device. Based on the above reasons, the width of the vacuum adsorption device of the extruded profile shell type generally does not exceed 135mm. In order to adsorb workpieces of larger width, it is usually practiced to assemble multiple vacuum adsorption devices, but this will still greatly increase the cost. Summary of the invention

[0006] The object of the present invention is to avoid the deficiencies in the prior art and to provide a vacuum adsorption device and a wide-width shell thereof, which provide a wide adsorption surface under the premise of ensuring the highest possible adsorption efficiency and not increasing the cost too much.

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] On the one hand, a wide-width shell of a vacuum adsorption device is provided, wherein the shell is a hollow extruded profile, wherein an air suction cavity extending along the length direction of the shell is formed inside the shell, wherein a plurality of air vents connected to the air suction cavity are provided on the bottom surface of the shell, wherein reinforcing ribs extending along the length direction of the shell are formed inside the shell for dividing the air suction cavity into at least two sub-air suction cavities along the width direction, and wherein an opening for connecting two adjacent sub-air suction cavities is provided on the reinforcing ribs.

[0009] As a further improvement, the cross-sectional outer contour of the shell is substantially rectangular, and the reinforcing ribs connect the inner top surface and the inner bottom surface of the shell.

[0010] As a further improvement, the reinforcing ribs are at least strips.

[0011] As a further improvement, the number of the reinforcing ribs is 2 or an even number greater than 2, and the reinforcing ribs are symmetrically distributed along the center line of the length direction of the shell.

[0012] As a further improvement, the width of the sub-intake cavity in the middle of the shell is greater than the width of the sub-intake cavities on both sides.

[0013] As a further improvement, the opening is arranged at the end of the reinforcing rib.

[0014] As a further improvement, an upper fixing groove and / or a lower fixing groove extending along the length direction of the shell is arranged on the inner side of the shell.

[0015] As a further improvement, the top surface of the shell is provided with a mounting groove extending along the length direction of the shell.

[0016] The wide width shell of the vacuum adsorption device provided by the present invention is a hollow extruded profile, and the interior of the shell is formed with an air suction cavity extending along the length direction of the shell, and the bottom surface of the shell is provided with a plurality of vents connected to the air suction cavity, and the interior of the shell is extended along the length direction to form a reinforcing rib that divides the air suction cavity into at least two sub-air suction cavities along the width direction, and the reinforcing rib is provided with an opening that connects two adjacent sub-air suction cavities. The shell of the present invention adopts a hollow extruded profile, and a reinforcing rib is provided in the middle of the extruded profile. Each sub-air suction cavity is connected through the opening provided on the reinforcing rib, so that only one vacuum generator needs to be provided in one of the sub-air suction cavities to realize vacuum suction of each sub-air suction cavity. In addition, the reinforcing rib can increase the structural strength of the shell, and the width of the extruded profile can be made very large and the height can be made small, so that the volume of the air suction cavity can be minimized to ensure the highest possible adsorption efficiency. The present invention can ensure the highest possible adsorption efficiency without increasing the cost too much on the premise of providing a larger width adsorption bottom surface and better structural strength.

[0017] On the other hand, the present invention also provides a vacuum adsorption device, comprising a wide width shell as described above, an end cover is provided at the end opening of the shell, a vacuum generator is provided in at least one sub-suction chamber, the vacuum generator is connected to the outside world through the shell or the end cover, a sealing member is provided on the bottom surface of the shell, and a plurality of adsorption through holes corresponding to each ventilation hole are provided on the sealing member.

[0018] As a further improvement, a throttle valve and / or a check valve is arranged in the vent hole.

[0019] Since the vacuum adsorption device provided by the present invention has the above-mentioned wide-width shell, it should have corresponding beneficial effects, so it will not be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of a wide-width shell of a vacuum adsorption device.

[0022] Figure 2 It is a cross-sectional view of a wide-width shell of a vacuum adsorption device.

[0023] Figure 3It is a three-dimensional assembly diagram of the vacuum adsorption device. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0025] Combination Figures 1 to 3 As shown, the wide width shell of the vacuum adsorption device provided by the embodiment of the present invention, the shell 1 is a hollow extruded profile, preferably an extruded aluminum profile, and the extruded aluminum profile can be easily formed into a key, a slot, a fixing slot, an installation slot, a reinforcing rib, etc., and the production cost is low. The cross-sectional profile of the shell 1 is generally rectangular, and the ratio of the length of the rectangle (the width of the shell 1) to the width of the rectangle (the height of the shell 1) is greater than two. The shell 1 is formed with an air suction cavity 11 extending along the length direction of the shell 1, and the bottom surface of the shell 1 is provided with a plurality of vents 12 connected to the air suction cavity 11. The shell 1 is formed with a reinforcing rib 13 extending along the length direction to divide the air suction cavity 11 into at least two sub-air suction cavities along the width direction, and the reinforcing rib 13 is provided with an opening 14 connecting two adjacent sub-air suction cavities. The opening 14 is arranged at the end of the reinforcing rib 13, and the opening 14 can be formed by cutting after the shell 1 is formed. A row of vent holes 12 can also be set at the reinforcing ribs 13, and when drilling the vent holes 12, the ribs 13 are drilled to a certain depth to form openings 14. The shell of the present invention adopts a hollow extruded profile, and a reinforcing rib 13 is set in the middle of the extruded profile. The sub-inhalation chambers are connected through the openings 14 set on the reinforcing ribs 13. In this way, only one vacuum generator needs to be set in one of the sub-inhalation chambers to achieve vacuum suction of each sub-inhalation chamber. In addition, the reinforcing ribs 13 can increase the structural strength of the shell, and the width of the extruded profile can be made very large and the height can be made small, so that the volume of the suction chamber 11 can be minimized to ensure the highest possible adsorption efficiency. The wide-width shell of the embodiment of the present invention can ensure the highest possible adsorption efficiency without increasing the cost too much, while providing a larger width adsorption bottom surface and better structural strength.

[0026] As a further preferred embodiment, the reinforcing ribs 13 connect the inner top surface and the inner bottom surface of the shell 1, so that the structural strength of the wide-width shell can be increased as much as possible. There are 2 reinforcing ribs 13, and the reinforcing ribs 13 can also be an even number greater than 2. Each reinforcing rib 13 is symmetrically distributed along the center line of the length direction of the shell 1. The width of the sub-inhalation cavity in the middle of the shell 1 is greater than the width of the sub-inhalation cavity on both sides. A plurality of reinforcing ribs 13 are provided to isolate a larger sub-inhalation cavity in the middle of the shell 1. The sub-inhalation cavity in the middle is used to place the vacuum generator 3. In this way, the placement of the vacuum generator 3 can be increased as much as possible without affecting the structural strength of the wide-width shell. The interior of the shell 1 is extended along the length direction to form an isolation rib 18 that separates the internal suction cavity of the shell 1 into an isolation cavity 19. The isolation cavity 19 is located on both sides of the inner upper part of the shell 1. The isolation cavity can effectively reduce the volume of the suction cavity and reduce the gas suction amount, thereby accelerating the suction and release speed of the vacuum adsorption device.

[0027] As a further preferred embodiment, the inner side of the housing 1 is provided with an upper fixing groove 15 and a lower fixing groove 16 extending along the length direction of the housing 1. The top surface of the housing 1 is provided with a mounting groove 17 extending along the length direction of the housing 1. The upper fixing groove 15, the lower fixing groove 16, and the mounting groove 17 are formed together during the extrusion molding of the housing. The upper fixing groove 15 and the lower fixing groove 16 are used to fix the vacuum generator 3 or other components. The mounting groove 17 is a T-slot, which is used to place a T-nut (slider) to connect with external devices, which is convenient and quick.

[0028] like Figure 3As shown, an embodiment of the present invention further provides a vacuum adsorption device, comprising a wide-width shell as described above, an end cap 2 is provided at the end opening of the shell 1, and the end cap 2 seals the end opening of the shell 1, so that a sealed suction cavity is formed inside the shell 1. A vacuum generator 3 is provided in at least one sub-suction cavity, and the vacuum generator 3 uses compressed air to eject a high-speed jet through a nozzle to suck away the gas in the suction cavity, so that the suction cavity forms a very low vacuum degree, and the air inlet and outlet ends of the vacuum generator 3 are connected to an external air source and the outside world through the air inlet and exhaust holes on the end cap 2 or the shell 1. Preferably, the vacuum generator 3 is fixed on an end cap 2, which is convenient for the installation of the vacuum generator 3, and the air inlet and outlet ends of the vacuum generator 3 can also be easily connected to an external air source and the outside world through the air inlet and exhaust holes on the end cap 2. A seal 4 is provided on the bottom surface of the shell 1, and the seal 4 is rectangular and attached to the outer bottom surface of the shell 1, and the seal 4 is adapted to the size of the outer bottom surface of the shell 1. The sealing member 4 is preferably sponge, or may be silicone or rubber, and may further be preferably silicone foam or rubber foam. The sealing member 4 is provided with a plurality of adsorption through holes 41 corresponding to each vent hole 12, and a throttle valve and / or a check valve 5 is provided in the vent hole 12.

[0029] When the vacuum adsorption device provided by the embodiment of the present invention is working, since two adjacent sub-suction chambers are interconnected through the openings 14 opened on the reinforcing ribs 13, the vacuum generator 3 will evacuate each sub-suction chamber together during suction, so that the air in each adsorption through hole 41 of the entire sealing member 4 will be sucked into the suction chamber. Each adsorption through hole is equivalent to a suction cup, and the adsorption through hole blocked by the workpiece generates a certain degree of vacuum, and the adsorption through hole adsorbs the workpiece under the action of atmospheric pressure.

[0030] Many specific details are set forth in the above description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein, and therefore, they should not be construed as limiting the scope of protection of the present invention.

[0031] In summary, although the present invention lists the above-mentioned preferred embodiments, it should be noted that although technicians in this field can make various changes and modifications, unless such changes and modifications deviate from the scope of the present invention, they should be included in the protection scope of the present invention.

Claims

1. A wide-width housing of a vacuum adsorption device, characterized in that: The shell (1) is a hollow extruded profile, an air suction cavity (11) extending along the length direction of the shell (1) is formed inside the shell (1), a plurality of air vents (12) connected to the air suction cavity (11) are arranged on the bottom surface of the shell (1), reinforcing ribs (13) extending along the length direction are formed inside the shell (1) to divide the air suction cavity (11) into at least two sub-air suction cavities along the width direction, the reinforcing ribs (13) connecting the inner top surface and the inner bottom surface of the shell (1), and the reinforcing ribs (13) include two, and the reinforcing ribs (13) are provided An opening (14) is provided to connect two adjacent sub-inhalation chambers; the width of the sub-inhalation chamber in the middle of the shell (1) is greater than the width of the sub-inhalation chambers on both sides; the sub-inhalation chamber in the middle is connected to the sub-inhalation chambers on both sides; the sub-inhalation chamber in the middle is used to place a vacuum generator (3); and the shell (1) is provided with isolation ribs (18) extending along the length direction to separate the internal suction chamber of the shell (1) into isolation chambers (19); the isolation chambers (19) are located on both sides of the inner upper part of the shell (1); and the lower part of the isolation chamber (19) is the suction chamber (11).

2. The wide width housing according to claim 1, characterized in that: The cross-sectional profile of the shell (1) is generally rectangular.

3. The wide width housing according to claim 2, characterized in that: The number of the reinforcing ribs (13) is 2 or an even number greater than 2, and the reinforcing ribs (13) are symmetrically distributed along the center line of the length direction of the shell (1).

4. The wide width housing according to any one of claims 1 to 3, characterized in that: The opening (14) is arranged at the end of the reinforcing rib (13).

5. The wide width housing according to any one of claims 1 to 3, characterized in that: An upper fixing groove (15) and / or a lower fixing groove (16) extending along the length direction of the shell (1) is arranged on the inner side of the shell (1).

6. The wide width housing according to any one of claims 1 to 3, characterized in that: The top surface of the shell (1) is provided with a mounting groove (17) extending along the length direction of the shell (1).

7. A vacuum adsorption device, characterized in that: It comprises a wide width shell as described in any one of claims 1 to 6, an end cover (2) is provided at the end opening of the shell (1), a vacuum generator (3) is provided in at least one sub-inhalation chamber, the vacuum generator (3) is connected to the outside through the shell (1) or the end cover (2), a sealing member (4) is provided on the bottom surface of the shell (1), and a plurality of adsorption through holes (41) corresponding to each ventilation hole (12) are provided on the sealing member (4).

8. The vacuum adsorption device according to claim 7, characterized in that: A throttle valve and / or a check valve (5) is arranged in the vent hole (12).

Images