Suction tool for grabbing a powder board

Abstract

The utility model discloses a suction tool for powder board grabbing, including the box body of rectangle, the lower port of box body is open and is fixedly installed with the bottom plate at the lower port, and the bottom plate is distributed with a plurality of adsorption holes of arranging according to rectangular array, the inner chamber top of box body is installed with a plurality of vacuum generator, and the vacuum generator includes the outer casing of cylinder, and the lower end of outer casing is equipped with the suction mouth, and the inner chamber of outer casing is screwed with the mixed flow pipe, and the upper end of mixed flow pipe is connected to the top of box body, and the annular compressed gas inlet chamber of the outer portion and the inner wall of outer casing is formed to mixed flow pipe, and the annular spout of the inner end and suction mouth is formed to mixed flow pipe. Vacuum generator is equipped with a annular spout, and compressed air is sprayed upwards through spout and generates negative pressure in lower part, and the airflow of suction flows vertically and mixes with compressed gas, and since the middle part of vacuum generator is a vertical large -size channel, so even if airflow mixes with powder, does not happen jam.

Description

Technical Field

[0001] This utility model relates to the field of suction cup technology, specifically a suction cup for gripping powder boards. Background Technology

[0002] Industrial suction cups / vacuum devices are key components in industrial automation used for adsorbing and transporting objects. They are mainly divided into two types: pneumatic suction and magnetic suction. Although magnetic suction devices have a stronger gripping force, they can only adsorb ferromagnetic objects, thus limiting their application range. Pneumatic suction devices have the advantages of simple structure, light weight, and uniform adsorption force, making them particularly suitable for transporting thin sheet-like objects. Powder sheets are thin sheets formed by pressing powder. They are relatively fragile and easily broken. When using existing suction devices to grasp them, some powder will fall off during adsorption. The fallen powder will flow with the airflow to the vacuum generator. The air inlet, air outlet, and air outlet of existing vacuum generators are mostly arranged in a T-shape (see the specification of patent CN221257271U). Figure 2 Because the suction direction is perpendicular to the blowing and exhaust directions and the air passage size at the confluence is small, powder blockage is likely to occur, which in turn affects the vacuum pumping effect. Utility Model Content

[0003] The purpose of this invention is to provide a suction device for gripping powderboard, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a suction device for grasping powder boards, comprising a rectangular box body, the lower end of the box body being open and a base plate being fixedly installed at the lower end, the base plate having a plurality of suction holes arranged in a rectangular array, a plurality of vacuum generators being installed at the top of the inner cavity of the box body, the vacuum generator comprising a cylindrical outer shell, the lower end of the outer shell being provided with a suction nozzle, a mixing tube being screwed into the inner cavity of the outer shell, the upper end of the mixing tube being connected to the top of the box body, an annular compressed gas inlet chamber being formed between the outer side of the mixing tube and the inner wall of the outer shell, an annular nozzle being formed between the inner end of the mixing tube and the suction nozzle, and an air blowing connector communicating with the compressed gas inlet chamber being installed on the side wall of the outer shell.

[0005] Preferably, the adsorption pore is a through-hole with a diameter of 1.5 to 2.5 mm.

[0006] Preferably, the side wall of the box body has a through hole for the air pipe to pass through, and each air blowing connector is connected to the air pipe.

[0007] Preferably, the upper surface of the box is equipped with a sound-absorbing cover covering the upper end of the mixing pipe. The sound-absorbing cover has a rectangular box structure and contains sound-absorbing cotton blocks inside. The sound-absorbing cover has strip-shaped exhaust holes distributed on it.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: The vacuum generator of this utility model is provided with an annular nozzle. Compressed air is ejected upward through the nozzle and negative pressure is generated at the bottom. The intake airflow flows vertically and mixes with the compressed gas. Since the middle part of the vacuum generator is a vertically oriented large-size channel, the intake and exhaust directions are consistent, so there will be no powder accumulation and blockage. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the exploded structure of this utility model; Figure 2 This is a schematic diagram of the main structure of this utility model; Figure 3 This is a cross-sectional structural diagram of a vacuum generator.

[0010] In the diagram: 1. Box body; 2. Base plate; 3. Adsorption hole; 4. Silencing cover; 5. Silencing cotton block; 6. Vacuum generator; 61. Outer shell; 62. Mixing pipe; 63. Air blowing connector; 64. Compressed gas inlet chamber; 65. Nozzle; 66. Suction mouth. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0012] Please see Figure 1-3 This utility model provides a technical solution: a suction device for gripping powder boards, including a rectangular box body 1, the lower end of the box body 1 is open and a base plate 2 is fixedly installed at the lower end, and a plurality of suction holes 3 are distributed on the base plate 2 in a rectangular array. The suction holes 3 are circular holes that pass through from top to bottom and have a diameter of 1.5 to 2.5 mm. Each suction hole 3 can generate a certain suction force when suctioning air, ensuring that the powder board is subjected to uniform force. Multiple vacuum generators 6 are installed at the top of the inner cavity of the box 1. Each vacuum generator 6 includes a cylindrical outer shell 61. The lower end of the outer shell 61 is provided with a suction nozzle 66. The lower end of the suction nozzle 66 draws in airflow under vacuum. A mixing tube 62 is screwed into the inner cavity of the outer shell 61. The upper end of the mixing tube 62 is connected to the top of the box 1. An annular compressed gas inlet chamber 64 is formed between the outer side of the mixing tube 62 and the inner wall of the outer shell 61. An annular nozzle 65 (a very narrow annular slit) is formed between the inner end of the mixing tube 62 and the suction nozzle 66. The compressed gas is discharged obliquely upward through the nozzle 65, forming a negative pressure zone at the bottom. The compressed gas and the intake gas converge and mix in the mixing tube 62.

[0013] The side wall of the outer casing 61 is equipped with an air blowing connector 63 that communicates with the compressed gas inlet chamber 64. The side wall of the casing 1 has a through hole for the air pipe to pass through, and each air blowing connector 63 is connected to the air pipe. The upper surface of the casing 1 is equipped with a silencer 4 that covers the upper end of the mixing pipe 62. The silencer 4 has a rectangular box structure and contains sound-absorbing cotton blocks 5. The silencer 4 has strip-shaped exhaust holes. The silencer 4 is used to reduce exhaust noise. After long-term use, powder will adhere to the sound-absorbing cotton blocks 5. The silencer 4 can be removed for cleaning after disassembling the silencer 4.

[0014] Working principle: Multiple vacuum generators 6 are installed in the box 1 to meet the vacuum requirements for powder adsorption. Each vacuum generator 6 has an annular nozzle 65. Compressed air is ejected upward through the nozzle 65 and negative pressure is generated at the bottom. The intake airflow flows vertically and mixes with the compressed gas. Since the middle of the vacuum generator 6 is a large vertical channel, it will not be blocked even if the airflow is mixed with powder.

[0015] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A suction device for gripping powder boards, comprising a rectangular box (1), wherein the lower end of the box (1) is open and a base plate (2) is fixedly installed at the lower end, characterized in that: The base plate (2) has several adsorption holes (3) arranged in a rectangular array. Multiple vacuum generators (6) are installed on the top of the inner cavity of the box (1). The vacuum generator (6) includes a cylindrical outer shell (61). The lower end of the outer shell (61) is provided with a suction nozzle (66). The inner cavity of the outer shell (61) is screwed with a mixing tube (62). The upper end of the mixing tube (62) is connected to the top of the box (1). An annular compressed gas inlet chamber (64) is formed between the outer side of the mixing tube (62) and the inner wall of the outer shell (61). An annular nozzle (65) is formed between the inner end of the mixing tube (62) and the suction nozzle (66). A blowing connector (63) communicating with the compressed gas inlet chamber (64) is installed on the side wall of the outer shell (61).

2. The suction device for gripping powderboard according to claim 1, characterized in that: The adsorption pore (3) is a circular hole that runs through the top and bottom and has a diameter of 1.5 to 2.5 mm.

3. The suction device for gripping powderboard according to claim 1, characterized in that: The side wall of the box (1) is provided with a through hole for passing through the air pipe, and each air blowing connector (63) is connected to the air pipe.

4. The suction device for gripping powderboard according to claim 3, characterized in that: The upper surface of the box (1) is equipped with a soundproof cover (4) covering the upper end of the mixing pipe (62). The soundproof cover (4) is a rectangular box structure and has soundproof cotton blocks (5) inside. The soundproof cover (4) has strip-shaped exhaust holes.

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