Suction tool for packaging box and suction tool assembly comprising suction tool

Abstract

The utility model discloses a suction tool for a packaging box and a suction tool assembly comprising the suction tool. The suction tool assembly comprises an air extractor, the device further comprises a base. A driving source; the at least two clamping pieces are used for clamping the packaging box, at least part of the clamping pieces are in driving connection with the driving source so that the suction tool can have at least two states, in the clamping state, the corresponding clamping pieces get close to each other so that all the clamping pieces can be used for clamping the packaging box, and a containing space with a downward opening is defined by all the clamping pieces and the base; the accommodating space is used for accommodating a packaging box; in the opening state, the corresponding clamping pieces are far away from each other to loosen the packaging box; the air extractor communicates with the top of the containing space and is used for extracting air out of the containing space in the clamping state so that the top of the containing space can be in a negative pressure state. The air extractor extracts air to enable the top of the packaging box to be in negative pressure, so that upward suction force is applied to the packaging box, the packaging box is not prone to falling down, the suction tool can be well applied no matter whether the top of the packaging box is flat or not, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging boxes, in particular to a suction device for packaging boxes and a suction device assembly comprising the suction device. Background Art

[0002] Packaging boxes are used to package items. For example, Tetra Pak is used to package liquid foods (such as milk, juice, etc.). In order to improve the automation level of packaging box transfer, such as the action of transferring packaging boxes from conveyor belts to storage boxes, suction devices are often used to complete it. For example, when producing boxes of milk, boxed milk is first produced, and then the boxed milk is transferred to a large storage box through a suction device for packaging and packaging. The storage box contains multiple boxes of milk.

[0003] After investigation, the Chinese utility model patent with the authorization number CN203127185U discloses "A Tetra Pak Packaging Box Gripper", which includes a horizontal mounting seat, a suction cup is provided on the bottom of the mounting seat, and two L-shaped clamping plates are provided on the outside of the mounting seat, forming a clamping space with a rectangular cross section. The mounting seat is also provided with a driving cylinder for clamping the clamping plates and expanding obliquely outward, and one clamping plate corresponds to one driving cylinder. The suction cup of the device uses an independent suction cup corresponding to each Tetra Pak package, and has good adsorption stability.

[0004] However, the above-mentioned gripper has the following problems:

[0005] The use of a suction cup to suck the top of a packaging box is generally suitable for packaging boxes with relatively flat tops. When the top of a packaging box is not flat, for example, a bottle cap is often set on the top of a milk packaging box, and some bottle caps are often set at an angle relative to the horizontal plane, the top of the packaging box cannot be well connected with the suction cup, and the above-mentioned suction device is not suitable. Therefore, the scope of application of the above-mentioned suction device is relatively limited. Utility Model Content

[0006] The first technical problem to be solved by the utility model is to provide a suction device for packaging boxes with a wide application range in view of the current status of the prior art.

[0007] The second technical problem to be solved by the utility model is to provide a suction device for packaging boxes with better suction effect.

[0008] The third technical problem to be solved by the utility model is to provide a suction device assembly.

[0009] The utility model adopts the following technical solution to solve the above-mentioned first technical problem: a suction device for a packaging box, comprising an air extraction device;

[0010] It is characterized by: it also includes

[0011] Pedestal;

[0012] A driving source is arranged on the base;

[0013] The clamping member is used to clamp the packaging box and has at least two clamping members, at least part of which is connected to the driving source so that the gripper has at least two states:

[0014] In the clamping state, the corresponding clamping members are close to each other so that all the clamping members are used to clamp the packaging box, and all the clamping members and the base form a downwardly open accommodation space, which is used to accommodate the packaging box;

[0015] In the open state, the corresponding clamping members move away from each other to release the packaging box;

[0016] The air extraction device is in communication with the top of the accommodation space and is used for extracting air out of the accommodation space in the clamping state so that the top of the accommodation space is in a negative pressure state.

[0017] Preferably, for ease of manufacturing, the base has an air extraction channel connected to the top of the accommodating space and the air extraction device respectively. The air extraction device and the accommodating space may also be connected in other ways, for example, the air extraction channel is located on the clamping member.

[0018] Preferably, for ease of manufacturing, the transverse cross-section of the base is rectangular;

[0019] The clamping parts are all in the shape of plates extending up and down, and there are four of them, which are respectively located on the left side, right side, front side and rear side of the base.

[0020] Preferably, for ease of manufacture, the base extends laterally.

[0021] To further solve the second technical problem of the present application, preferably, it further includes an elastic sealing member connected to the bottom of the base;

[0022] The elastic sealing member is in a natural state, and its outer edge extends laterally out of the base;

[0023] The elastic sealing member is squeezed by the clamping member in the clamping state and is in a compressed state. The elastic sealing member seals the clamping member and the base, and the elastic sealing member connects the air extraction device and the accommodating space.

[0024] In this way, by providing the elastic sealing member, the base and the clamping member are sealed and matched, which is conducive to the accommodating space being in a negative pressure state, and the suction effect on the packaging box is better.

[0025] Preferably, in order to facilitate manufacturing, the elastic sealing member is made of an elastic material having a plurality of through holes, and the through holes are used to connect the air extraction device and the accommodating space.

[0026] Preferably, the elastic sealing member is block-shaped and covers the bottom of the base;

[0027] Alternatively, the elastic sealing member is annular.

[0028] Preferably, the driving source is a module, which is connected to the corresponding clamping member via a telescopic rod. The driving source may also be pneumatic or other means.

[0029] In order to drive each clamping member, each clamping member is connected to a corresponding driving source and can be moved closer to or farther from the base.

[0030] The utility model adopts a technical solution to solve the third technical problem as follows: a suction device assembly, characterized in that it includes the suction device for packaging boxes as described above, and also includes a manipulator movably connected to the suction device.

[0031] Compared with the prior art, the advantages of the utility model are: by setting a base, a driving source and a clamping member, the packaging box is clamped by the clamping member, and at the same time, because the vacuum device draws air out of the accommodating space, the top of the packaging box is under negative pressure, thereby having an upward suction force on the packaging box, the packaging box is not easy to fall downward, and the packaging box is convenient to be transferred to the required position. Regardless of whether the top of the packaging box is flat, the suction device can be well applied, has a wide range of application, and is simple and practical in structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the positional relationship between the suction device and the packaging box in an embodiment of the utility model (the clamping member is in an open state and the elastic sealing member is removed);

[0033] Figure 2 for Figure 1 Exploded diagram of

[0034] Figure 3 for Figure 1 Schematic diagram of the middle gripper (the gripper is in the open state);

[0035] Figure 4 for Figure 3 Schematic diagram of the gripper from another angle;

[0036] Figure 5 This is a schematic diagram of a suction device clamping a packaging box according to an embodiment of the utility model (the clamping member is in a clamping state and the elastic sealing member is removed);

[0037] Figure 6 for Figure 5 Schematic diagram of the middle gripper (the gripper is in the gripping state);

[0038] Figure 7 for Figure 6 Schematic diagram of the middle gripper from another angle;

[0039] Figure 8This is a schematic diagram of a suction device with an elastic sealing member in an embodiment of the utility model (all clamping members are removed). DETAILED DESCRIPTION

[0040] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0041] See also Figure 3-4 , Figure 6-7 , which is a preferred embodiment of the suction device for packaging boxes of the utility model; Figure 1 , Figure 2 , Figure 5 The schematic diagram of the positional relationship between the suction device and the packaging box in this embodiment shows that there are 12 packaging boxes 200. The suction device for packaging boxes includes an air extraction device (not shown in the figure), a base 1, a driving source 2, a clamping member 3, an elastic sealing member 5 and other main components.

[0042] Among them, see Figure 4 , Figure 7 The base 1 has an air extraction channel 11 connected to the top of the accommodating space 100 and the air extraction device respectively. The transverse cross-section of the base 1 is rectangular; preferably, the base 1 is a transversely extending rectangle, and the base 1 can also be set to other shapes as needed, as long as it can cooperate with the clamping member 3, the packaging box 200, and the elastic sealing member 5.

[0043] See also Figure 1 to Figure 3 , Figure 5-6 The driving source 2 is arranged on the base 1. Preferably, the driving source 2 is connected to the top surface of the base 1, and the driving source 2 can also be installed at other positions as required. The driving source 2 adopts a module, and the module is connected to the corresponding clamping member 3 through a telescopic rod 4.

[0044] See also Figure 1 to Figure 7The clamping members 3 are used to clamp the packaging box 200 and have at least two, at least some of which are connected to the driving source 2 so that the suction device has two states: in the clamping state, the corresponding clamping members 3 are close to each other so that all the clamping members are used to clamp the packaging box 200, and all the clamping members 3 and the base 1 form a downwardly open accommodation space 100, and the accommodation space 100 is used to accommodate the packaging box 200; in the open state, the corresponding clamping members 3 are away from each other to release the packaging box 200. In this embodiment, the clamping members 3 are all in the shape of plates extending up and down, and there are four of them, which are respectively located on the left side, right side, front side, and rear side of the base 1, and each clamping member 3 is connected to the corresponding driving source 2, and can be close to or away from the base 1. The clamping members 3 can be of different shapes, and the number of the clamping members 3 can be adjusted as needed. The driving source 2 can have multiple moving paths to drive the clamping members 3 to approach or move away from the base 1. The driving source 2 can be connected to one or more clamping members 3, or to all clamping members 3. As long as all the clamping members 3 can clamp the packaging box 200 and enclose a negative pressure accommodating space 100, and can release the packaging box 200 so that the packaging box 200 can automatically fall under the action of gravity, it will be sufficient.

[0045] The exhaust device (not shown in the figure) is connected to the top of the accommodation space 100, and is used to exhaust air out of the accommodation space 100 in the clamping state so that the top of the accommodation space 100 is in a negative pressure state. The setting position of the exhaust device can be adjusted as needed. The exhaust device adopts an existing structure, including an exhaust pump, which is connected to the exhaust channel 11 of the base 1 through an exhaust pipe 6, which will not be expanded here.

[0046] See also Figure 8, the elastic seal 5 is connected to the bottom of the base 1. The elastic seal 5 is in a natural state, and its outer edge extends out of the base 1 laterally; the elastic seal 5 is squeezed by the clamping member 3 in the clamping state and is in a compressed state. The elastic seal 5 seals the clamping member 3 and the base 1, and the elastic seal 5 connects the air extraction device and the accommodation space 100. Preferably, the elastic seal 5 is made of an elastic material with a plurality of through holes, and the through holes connect the air extraction device and the accommodation space 100. The elastic material is sponge or rubber. The elastic seal 5 is in a block shape and covers the entire bottom of the base 1. In this way, the elastic seal 5 is conducive to the sealing between the clamping member 3 and the base 1, and is conducive to the accommodation space 100 being in a negative pressure state; in addition, when the packaging box 200 is close to the base 1, the elastic seal 5 can play a buffering role on the top of the packaging box 200 and prevent the top of the packaging box 200 from being squeezed and deformed. Alternatively, the elastic seal 5 is annular and does not cover the central position of the bottom of the base 1, which can also seal the clamping member 3 and the base 1. The number of elastic seals 5 is adjusted as needed, and can be an integral piece or a split piece. For example, four elastic seals 5 can be provided, corresponding to the four clamping pieces 3 one by one. In this way, when the clamping piece 3 clamps the packaging box 200, the four elastic seals 5 abut against the corresponding clamping piece 3 to seal, which is conducive to the negative pressure state of the accommodating space 100. Preferably, the four elastic seals 5 are surrounded in a circle (that is, the elastic seals 5 are annular) and the sealing effect is better. In order to facilitate the installation of the elastic seal 5, the bottom of the base 1 is recessed upward to form an installation groove for the installation of the elastic seal 5.

[0047] The present embodiment also includes a suction device assembly, including the suction device for the packaging box 200 as described above, and also including a manipulator movably connected to the suction device. The manipulator can adopt different degrees of freedom to facilitate the movement of the suction device. The manipulator specifically adopts an existing structure, which will not be expanded here. The air extraction device is preferably arranged outside the base 1 and the clamping member 3, which is conducive to reducing the overall weight of the base 1 and the clamping member 3, and is convenient for the manipulator to drive the base 1 and the clamping member 3 to move.

[0048] The gripper and gripper assembly of this embodiment are applicable to milk packaging boxes as well as packaging boxes of other products such as juice packaging boxes.

[0049] The working principle and usage status are as follows.

[0050] Taking the example of transferring 12 packaging boxes 200 to a storage box (not shown in the figure), the 12 packaging boxes 200 are arranged in 3 rows, 4 in each row, as shown in FIG. Figure 2 As shown, the packaging box 200 is a milk packaging box.

[0051] See also Figure 1 to Figure 4 , the robot moves the gripper to the vicinity of the packaging box 200 on the conveyor belt, and the clamping member 3 is in an open state;

[0052] See also Figure 5 to Figure 7 The driving source 2 drives the corresponding clamping member 3 to move so that the clamping member 3 clamps the side wall of the packaging box 200. At the same time, the vacuum device is in a vacuum state, and the elastic sealing member 5 is squeezed by the clamping member 3 to make the clamping member 3 and the base 1 seal and cooperate to reduce or avoid air leakage between the clamping member 3 and the base 1, so that the top of the packaging box 200 is in a negative pressure state, which is conducive to sucking the packaging box 200 upwards, and the packaging box 200 is not easy to fall.

[0053] The robot arm rotates, and the packaging box 200 sucked by the suction device is transferred to the top of the storage box and close to the top of the storage box. The driving source 2 drives the corresponding clamping member 3 to move and open the clamping member 3. The packaging box 200 falls downward into the storage box under the action of gravity. Figure 2 shown.

Claims

1. A suction device for packaging boxes, comprising a suction device; Features: Also includes Base (1); A driving source (2) is arranged on the base (1); The clamping member (3) is used to clamp the packaging box (200) and has at least two clamping members, at least part of which is connected to the driving source (2) so that the gripper has at least two states: In the clamping state, the corresponding clamping members (3) are brought close to each other so that all the clamping members (3) are used to clamp the packaging box (200), and all the clamping members (3) and the base (1) form a downwardly open accommodation space (100), and the accommodation space (100) is used to accommodate the packaging box (200); In the open state, the corresponding clamping members (3) move away from each other to release the packaging box (200); The air extraction device is in communication with the top of the accommodating space (100), and is used to extract air from the accommodating space (100) in the clamping state so that the top of the accommodating space (100) is in a negative pressure state.

2. The suction device according to claim 1, characterized in that: The base (1) has an air extraction channel (11) which is respectively connected to the top of the accommodating space (100) and the air extraction device.

3. The suction device according to claim 1, characterized in that: The transverse cross section of the base (1) is rectangular; The clamping members (3) are all in the shape of plates extending up and down, and there are four of them, which are respectively located on the left side, right side, front side and rear side of the base (1).

4. The suction device according to claim 1, characterized in that: The base (1) extends transversely.

5. The suction device according to claim 1, characterized in that: It also includes an elastic sealing member (5) connected to the bottom of the base (1); The elastic sealing member (5) is in a natural state, and its outer edge extends laterally out of the base (1); The elastic sealing member (5) is squeezed by the clamping member (3) in the clamping state and is in a compressed state. The elastic sealing member (5) seals the clamping member (3) and the base (1), and the elastic sealing member (5) is connected to the air extraction device and the accommodating space (100).

6. The suction device according to claim 5, characterized in that: The elastic sealing member (5) is made of an elastic material having a plurality of through holes, wherein the through holes are used to connect the air extraction device and the accommodation space (100).

7. The suction device according to claim 5, characterized in that: The elastic sealing member (5) is block-shaped and covers the bottom of the base (1); Alternatively, the elastic sealing member (5) is annular.

8. The suction device according to claim 1, characterized in that: The driving source (2) adopts a module, and the module is connected to the corresponding clamping member (3) through a telescopic rod (4).

9. The suction device according to claim 1, characterized in that: Each clamping member (3) is connected to a corresponding driving source (2) for driving, and can be moved closer to or farther from the base (1).

10. A suction device assembly, characterized in that: It comprises a suction device for a packaging box (200) as claimed in any one of claims 1 to 9, and also comprises a robot arm movably connected to the suction device.

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