Adaptive suction cup structure

Abstract

This utility model belongs to the technical field of packaging machinery and equipment, and relates to an adaptive suction cup structure, including a suction cup base with an inner cavity. A negative pressure pipe communicating with the inner cavity is provided at the top of the inner cavity, and several suction cups are evenly distributed at the bottom of the inner cavity, each suction cup communicating with the inner cavity. A piston is provided in the inner cavity of the suction cups to control the airflow. During operation, when the suction cup picks up a packaging bag, the airflow is unobstructed; when the suction cup does not pick up a packaging bag, the piston closes the airflow. The inner cavity of the suction cup is constructed as an interconnected cylindrical cavity, a conical cavity, and an airflow cavity, with a sleeve fixed inside the cylindrical cavity. The piston includes an integrally connected shaft and a conical portion, with the shaft fitting inside the sleeve. This suction cup structure can adaptively adjust according to the condition of the packaging bag when picking it up, thus meeting the requirements for picking up various types of packaging bags.

Description

Technical Field

[0001] This utility model belongs to the technical field of packaging machinery and equipment, and relates to an adaptive suction cup structure. Background Technology

[0002] After being filled with materials, weighed, and sewn, the packaging bags are conveyed along the conveyor line. Upon reaching the desired workstation, a material transfer unit picks up the bag and moves it to the next station. However, existing material transfer units suffer from air leakage during bag transfer due to uneven material levels within the bags, resulting in unreliable bag gripping. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides an adaptive suction cup structure. This suction cup structure can adaptively adjust according to the condition of the packaging bag when picking it up, thereby meeting the picking needs of various packaging bags.

[0004] According to the technical solution of this utility model: an adaptive suction cup structure, characterized in that: it includes a suction cup base, the suction cup base has an inner cavity, a negative pressure tube communicating with the inner cavity is provided at the top of the inner cavity, and a plurality of suction cups are evenly distributed at the bottom of the inner cavity, each of the suction cups communicating with the inner cavity;

[0005] The suction cup has a piston inside that controls the air passage. When the suction cup picks up a packaging bag, the air passage is open; when the suction cup does not pick up a packaging bag, the piston closes the air passage.

[0006] As a further improvement of this utility model, the inner cavity of the suction cup is composed of an interconnected cylindrical cavity, a conical cavity, and an airflow cavity, with a sleeve fixed inside the cylindrical cavity;

[0007] The piston includes an integrally connected shaft and a tapered part. The shaft is fitted inside a sleeve, and a spring is sleeved on the shaft. The upper end of the spring presses against the lower end face of the sleeve, and the lower end of the spring presses against the upper end face of the tapered part. A sealing plate is fixed to the top of the shaft, and the diameter of the sealing plate is larger than the inner diameter of the sleeve.

[0008] After the conical part fits against the inner wall of the conical cavity, it can close the air passage inside the suction cup cavity.

[0009] As a further improvement of this utility model, the upper part of the suction cup is provided with an external threaded part, which is threadedly connected to the internal threaded hole constructed at the bottom of the inner cavity.

[0010] As a further improvement of this utility model, the upper apex corner of the airflow cavity is constructed as a rounded corner.

[0011] As a further improvement of this utility model, the negative pressure tube is threadedly connected to the negative pressure tube port at the top of the suction cup seat.

[0012] As a further improvement of this utility model, the suction cup seat is provided with four rows of suction cups arranged along the length direction.

[0013] As a further improvement of this utility model, the lower end face of the suction cup is constructed as a toothed surface.

[0014] The technical advantages of this utility model are as follows: This utility model has a reasonable and ingenious structure. During operation, it can be adjusted according to the height of the packaging bag surface to achieve suction of bags of various specifications and models. During operation, it can suction of packaging bags, and for the lower parts of the packaging bag surface that cannot be suctioned, the suction cups at the corresponding positions close under negative pressure to prevent air leakage. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention.

[0016] Figure 2 This is a top view of the present invention. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] Figure 1 , 2 The components include a suction cup seat 10, an inner cavity 11, a negative pressure tube 12, a suction cup 20, a piston 21, a spring 22, a sleeve 23, a cylindrical cavity 24, a conical cavity 25, an airflow cavity 26, a shaft 27, a conical part 28, and a sealing plate 29.

[0020] like Figure 1 , 2As shown, this utility model is an adaptive suction cup structure, including a suction cup base 10. The suction cup base 10 has an inner cavity 11. A negative pressure tube 12 communicating with the inner cavity 11 is provided at the top of the inner cavity 11, and a plurality of suction cups 20 are evenly distributed at the bottom of the inner cavity 11, each of the suction cups 20 communicating with the inner cavity 11. By providing multiple suction cups 20 on the suction cup base 10, compared with the original single suction cup structure, the inner diameter of the suction cup can be effectively reduced due to the use of multiple suction cups 20, thus making it effective for packaging bags with various surface heights during operation.

[0021] Furthermore, in order to prevent air leakage when the suction cup fails to pick up the packaging bag during operation, the suction cup 20 is designed as follows: the inner cavity of the suction cup 20 is equipped with a piston 21 to control the opening and closing of the air passage. During operation, when the suction cup 20 picks up the packaging bag, the air passage is unobstructed; when the suction cup 20 does not pick up the packaging bag, the piston 21 closes the air passage.

[0022] The suction cup 20 has an internal cavity structure consisting of an interconnected cylindrical cavity 24, a conical cavity 25, and an airflow cavity 26, with a sleeve 23 fixed inside the cylindrical cavity 24.

[0023] Furthermore, the piston 21 includes an integrally connected shaft portion 27 and a tapered portion 28. The shaft portion 27 is fitted inside the sleeve 23. A spring 22 is sleeved on the shaft portion 27, with the upper end of the spring 22 pressing against the lower end face of the sleeve 23 and the lower end of the spring 22 pressing against the upper end face of the tapered portion 28. A sealing plate 29 is fixed to the top of the shaft portion 27, and the diameter of the sealing plate 29 is larger than the inner diameter of the sleeve 23.

[0024] After the conical part 28 is attached to the inner wall of the conical cavity 25, it can close the air passage of the suction cup 20 cavity.

[0025] Furthermore, in order to achieve a convenient, reliable and quick connection between the suction cup 20 and the suction cup base 10, the upper part of the suction cup 20 is provided with an external thread, which is threadedly connected to the internal thread hole constructed at the bottom of the inner cavity 11.

[0026] The upper apex of the airflow cavity 26 is constructed as a rounded corner.

[0027] Furthermore, in order to enable the negative pressure tube 12 to be reliably and conveniently connected to the suction cup seat 10 in a quick-release manner, the negative pressure tube 12 is threadedly connected to the negative pressure tube port at the top of the suction cup seat 10.

[0028] Furthermore, in practice, the suction cup base 10 is provided with four rows of suction cups 20 arranged along the length direction.

[0029] The lower end face of the suction cup 20 is toothed. When the packaging bag is suctioned during operation, the bag body corresponding to the outer ring of the suction cup 20 can be suctioned to the toothed surface, thereby achieving reliable suction of the packaging bag.

[0030] like Figure 1 , 2 As shown, during operation, the negative pressure pipe 12 is connected to an external vacuum device to perform vacuuming on the inner cavity 11 of the suction cup seat 10, ensuring that the suction cup 20 can reliably adsorb the packaging bag. In specific operation, when adsorbing the packaging bag, due to the uneven surface of the bag, the multiple suction cups 20 connected to the suction cup seat 10 can effectively adapt to this unevenness. Specifically, the suction cups on the suction cup seat 10 corresponding to the protruding parts of the packaging bag can reliably adsorb the bag, while the suction cups on the suction cup seat 10 corresponding to the concave parts of the packaging bag cannot adsorb the bag. During operation, under the action of negative pressure vacuum, the piston 21 of these suction cups is lifted, thus lifting the suction cups corresponding to the concave parts of the packaging bag surface, keeping them in a closed state, thereby preventing vacuum leakage.

[0031] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A self-adapting suction cup structure, characterized by: Includes a suction cup seat (10), the suction cup seat (10) has an inner cavity (11), a negative pressure tube (12) communicating with the inner cavity (11) is provided at the top of the inner cavity (11), and a number of suction cups (20) are evenly distributed at the bottom of the inner cavity (11), each of the suction cups (20) communicating with the inner cavity (11). The suction cup (20) has a piston (21) inside to control the opening and closing of the air passage. When the suction cup (20) sucks up the packaging bag, the air passage is unobstructed; when the suction cup (20) does not suck up the packaging bag, the piston (21) closes the air passage.

2. The self-adaptive suction cup structure of claim 1, wherein: The suction cup (20) has an internal cavity structure consisting of a cylindrical cavity (24), a conical cavity (25), and an airflow cavity (26) that are interconnected, with a sleeve (23) fixed inside the cylindrical cavity (24). The piston (21) includes an integrally connected shaft (27) and a tapered part (28). The shaft (27) is fitted inside the sleeve (23). A spring (22) is sleeved on the shaft (27), and the upper end of the spring (22) is pressed against the lower end face of the sleeve (23). The lower end of the spring (22) is pressed against the upper end face of the tapered part (28). A sealing plate (29) is fixed at the top of the shaft (27). The diameter of the sealing plate (29) is larger than the inner diameter of the sleeve (23). After the conical part (28) is attached to the inner wall of the conical cavity (25), the air passage of the suction cup (20) can be closed.

3. The adaptive suction cup structure as described in claim 1, characterized in that: The upper part of the suction cup (20) is provided with an external thread, which is threadedly connected to the internal thread hole constructed at the bottom of the inner cavity (11).

4. The adaptive suction cup structure as described in claim 1, characterized in that: The upper apex of the airflow cavity (26) is constructed as a rounded corner.

5. The adaptive suction cup structure as described in claim 1, characterized in that: The negative pressure tube (12) is threadedly connected to the negative pressure tube port at the top of the suction cup seat (10).

6. The adaptive suction cup structure as described in claim 1, characterized in that: The suction cup base (10) is provided with four rows of suction cups (20) arranged along the length direction.

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