Gas line switching system used in Krones case packers

Abstract

The utility model discloses a gas circuit switching system used in a Krones case packer, including a vacuum pump, an air source control box, a vacuum pipeline connected to the vacuum pump, a compressed air pipeline connected to the air source control box, and an air passage pipeline connected to a bottle grabbing head. The ends of the vacuum pipeline and the compressed air pipeline meet at one point with one end of the air passage pipeline away from the bottle grabbing head. Valves are provided on the vacuum pipeline and the compressed air pipeline. The valves are solenoid valves. An electrical control box electrically connected to the solenoid valve for controlling the switch of the solenoid valve is also included. The utility model can not only improve the efficiency of gas circuit switching, but also avoid the problem of damage to the valve due to manual switch of the valve, and the operation is also simpler. The utility model is suitable for case packers and is used to switch gas circuits to grab bottles of different bottle types.

Description

Technical Field

[0001] The utility model belongs to the field of case packing machines, in particular to an air path switching system used in a Krones case packing machine. Background Art

[0002] Krones case packers use different bottle grippers for different bottle types. For example, when packing 450 bottles (i.e., the capacity of bottle 1 is 450ml), an airbag bottle gripper 21 is used. A circle of airbags 211 is arranged inside the airbag bottle gripper 21. The structure of the airbag bottle gripper 21 is shown in FIG. Figure 1 . A suction cup bottle grabbing head 22 is used to pack 260 bottles (i.e., the capacity of bottle 1 is 260 ml). A vacuum suction cup 221 is provided at the bottom of the suction cup bottle grabbing head 22. The structure of the suction cup bottle grabbing head 22 is shown in FIG. Figure 2 .

[0003] At present, the gas system used in bottle grabbing is as follows Figure 3 As shown, when grabbing 450 bottles, the bottle grabbing head 2 uses an airbag bottle grabbing head 21, the first valve 3 is opened, the second valve 4 is closed, and the air source control box 5 blows compressed air into the airbag 211 through the pipeline. Since the airbag bottle grabbing head 21 is sleeved on the bottle cap, the airbag 211 swells and squeezes the bottleneck to achieve grabbing. When grabbing 260 bottles, the bottle grabbing head 2 is replaced with a suction cup bottle grabbing head 22, the first valve 3 is closed, the second valve 4 is opened, and the vacuum pump 6 is used to evacuate the vacuum suction cup 221 on the suction cup bottle grabbing head 22, and the vacuum suction cup 221 sucks the top of the bottle cap to achieve grabbing.

[0004] Since the first valve 3 and the second valve 4 are manual valves, the above-mentioned air circuit system needs to open or close the first valve 3 and the second valve 4 frequently when in use, which has high labor cost and low efficiency; and frequent opening and closing of the valves can easily damage them and cause air leakage; in addition, considering space limitations, the vacuum pump 6 and the air source control box 5 are usually placed under the Krones case packing machine, which makes it inconvenient to operate the valves. Utility Model Content

[0005] The utility model aims to provide an air circuit switching system applied to a Krones case packer, so as to solve the problems existing in the prior art such as low efficiency of switching air circuits, easy damage of valves, inconvenient valve operation, etc.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A gas circuit switching system used in a Krones case packer includes a vacuum pump, an air source control box, a vacuum pipeline connected to the vacuum pump, a compressed air pipeline connected to the air source control box, and an air pipeline connected to a bottle grabbing head. The ends of the vacuum pipeline and the compressed air pipeline intersect at one point with an end of the air pipeline away from the bottle grabbing head. Valves are provided on the vacuum pipeline and the compressed air pipeline. The valves are solenoid valves. An electrical control box electrically connected to the solenoid valve and used to control the switch of the solenoid valve is also included.

[0008] As a limitation of the present utility model: the valve is a two-way solenoid valve, the number of which is set to two, one of which is set on the vacuum pipeline and one on the compressed air pipeline.

[0009] As another limitation of the present invention: the valve is a three-way solenoid valve with three interfaces, and the three-way solenoid valve is arranged at the intersection of the vacuum pipeline, the compressed air pipeline, and the gas pipeline. The vacuum pipeline, the compressed air pipeline, and the gas pipeline are each connected to an interface.

[0010] As another limitation of the present invention: the electrical control box is provided with a switching switch for controlling the connection of the vacuum pipeline or the compressed air pipeline.

[0011] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0012] The utility model is an improvement on the gas circuit switching system in the prior art. The specific improvement is to replace the manual valve with a solenoid valve, and then add an electrical control box electrically connected to the solenoid valve, and a switching switch is arranged on the electrical control box. When grabbing a bottle of 260 bottles, the switch corresponding to the 260 bottles on the electrical control box is turned on, and the electrical control box controls the solenoid valve to work, so that the vacuum pipeline connected to the vacuum pump is connected to the air pipeline, and the vacuum pump draws air to make the vacuum suction cup suck the top of the bottle cap to achieve grabbing; when grabbing a bottle of 450 bottles, the switch corresponding to the 450 bottles on the electrical control box is turned on, and the electrical control box controls the solenoid valve to work, so that the compressed air pipeline connected to the air source control box is connected to the air pipeline, and the compressed air makes the airbag bulge and squeeze the bottleneck to achieve grabbing. The system realizes the grabbing of different bottle types by automatically switching the valve on and off through the electrical control box, without manually switching the valve, improving the gas circuit switching efficiency, avoiding the problem of valve damage caused by long-term manual switching of the valve, and making the operation easier.

[0013] In summary, the utility model can not only improve the gas circuit switching efficiency, but also avoid the problem of damage to the valve due to manual switching of the valve, and the operation is also simpler; the utility model is suitable for a case packing machine, and is used for switching the gas circuit to grab bottles of different bottle types. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] Figure 1 (a) is a schematic diagram of the structure of an airbag bottle grabbing head in the prior art;

[0016] Figure 1 (b) is a schematic diagram of the structure of an airbag bottle grabbing head grabbing a bottle in the prior art;

[0017] Figure 2 (a) is a schematic diagram of the structure of a suction cup bottle grabbing head in the prior art;

[0018] Figure 2 (b) is a schematic diagram of the structure of a suction cup bottle gripping head grabbing a bottle in the prior art;

[0019] Figure 3 It is a structural schematic diagram of a gas path switching system in the prior art;

[0020] Figure 4 This is a schematic diagram of the structure of Embodiment 1 of the present utility model (the electrical control box is not shown);

[0021] Figure 5 This is a schematic diagram of the main structure of the electrical control box in Embodiment 1 of the present utility model;

[0022] Figure 6 This is a schematic diagram of the structure of Example 2 of the utility model.

[0023] In the figure: 1- bottle;

[0024] 2- bottle grabbing head, 21- air bag type bottle grabbing head, 211- air bag, 22- suction cup type bottle grabbing head, 221- vacuum suction cup;

[0025] 3-first valve, 4-second valve, 5-air source control box, 6-vacuum pump, 7-vacuum pipeline, 8-compressed air pipeline, 9-air pipeline, 10-three-way solenoid valve, 11-two-way solenoid valve, 12-electrical control box, 13-260 bottle type switch, 14-450 bottle type switch, 15-main switch, 16-260 bottle type indicator light, 17-450 bottle type indicator light. DETAILED DESCRIPTION

[0026] The preferred embodiment of the utility model is described below in conjunction with the accompanying drawings. It should be understood that the gas circuit switching system used in the Krones case packer described here is a preferred embodiment, which is only used to illustrate and explain the utility model and does not constitute a limitation of the utility model.

[0027] Example 1

[0028] like Figure 4 , Figure 5As shown, this embodiment includes a vacuum pump 6, an air source control box 5, a vacuum pipeline 7 connected to the vacuum pump 6, a compressed air pipeline 8 connected to the air source control box 5, and an air pipeline 9 connected to the bottle grabbing head 2. The ends of the vacuum pipeline 7, the compressed air pipeline 8, and the end of the air pipeline 9 away from the bottle grabbing head 2 intersect at one point. Here, the end of the vacuum pipeline 7 refers to the end of the vacuum pipeline 7 away from the vacuum pump 6; the end of the compressed air pipeline 8 refers to the end of the compressed air pipeline 8 away from the air source control box 5. Valves are provided on the vacuum pipeline 7 and the compressed air pipeline 8 for switching the air circuit. When grabbing a 260 bottle type, the vacuum pipeline 7 is aired, and the compressed air pipeline 8 is not aired. The vacuum pump 6 draws air to make the vacuum suction cup suck the top of the bottle cap to achieve grabbing; when grabbing a 450 bottle type, the compressed air pipeline 8 is aired, and the vacuum pipeline 7 is not aired. The compressed air makes the air bag swell and squeeze the bottleneck to achieve grabbing. The above are all prior art, and the relevant structure and working principle will not be described in detail.

[0029] Compared with the prior art, this embodiment has the following improvements:

[0030] 1. The valve is a solenoid valve; Figure 4 As shown, in this embodiment, the solenoid valve adopts a three-way solenoid valve 10, which is arranged at the intersection of the vacuum pipeline 7, the compressed air pipeline 8 and the gas pipeline 9. The three-way solenoid valve 10 has three interfaces, and the vacuum pipeline 7, the compressed air pipeline 8 and the gas pipeline 9 are each connected to an interface. The three-way solenoid valve 10 has a mechanical knob. If the three-way solenoid valve 10 fails and cannot switch automatically, the mechanical knob can be directly adjusted manually to achieve rapid fault handling. Since the three-way solenoid valve 10 adopts the existing technology, its structure and working principle will not be described in detail.

[0031] 2. Add electrical control box 12;

[0032] The electrical control box 12 is electrically connected to the three-way solenoid valve 10 to realize automatic control of the opening and closing of the three-way solenoid valve 10. The internal structure of the electrical control box 12 and the connection relationship between the three-way solenoid valve 10 are both prior art and will not be described in detail here. Figure 5 As shown, the electrical control box 12 is provided with a switch for controlling the connection of the vacuum pipeline 7 or the compressed air pipeline 8, and the switch includes a main switch 15, a 260 bottle switch 13 and a 450 bottle switch 14. It should be noted that in actual production, the 780 bottle type is the same as the 450 bottle type, and both use an airbag bottle grabbing head. Therefore, the 450 bottle switch 14 here can also control the grabbing of the 780 bottle type. The electrical control box 12 is also provided with a 260 bottle indicator light 16 and a 450 bottle indicator light 17, which are convenient for the operator to observe the operation status and the on and off status of the corresponding switches.

[0033] When using this embodiment, if a bottle of 260 bottle type is grasped, the bottle grasping head 2 adopts a suction cup type bottle grasping head, the 260 bottle type switch 13 on the electrical control box 12 is turned on, and the three-way solenoid valve 10 works, so that the vacuum pipeline 7 connected to the vacuum pump 6 is connected to the air pipeline 9, while the compressed air pipeline 8 connected to the air source control box 5 is not connected to the air pipeline 9, and the vacuum pump 6 evacuates air to make the vacuum suction cup suck the top of the bottle cap to achieve grasping; if a bottle of 450 or 780 bottle type is grasped, the bottle grasping head 2 adopts an air bag type bottle grasping head, the 450 bottle type switch 14 on the electrical control box 12 is turned on, and the three-way solenoid valve 10 works, so that the compressed air pipeline 8 connected to the air source control box 5 is connected to the air pipeline 9, while the vacuum pipeline 7 connected to the vacuum pump 6 is not connected to the air pipeline 9, at this time, the compressed air enters the air bag through the compressed air pipeline 8 and the air pipeline 9, and the air bag bulges and squeezes the bottleneck to achieve grasping. This embodiment realizes automatic switching of the gas circuit through the cooperation of the electrical control box 12 and the three-way solenoid valve 10, thereby improving the gas circuit switching efficiency. At the same time, it avoids the problem of valve damage caused by long-term manual switching of the valve, and the operation is also simpler.

[0034] Example 2

[0035] like Figure 6 As shown, the structure of this embodiment is basically the same as that of Embodiment 1, the difference being that the valve in this embodiment adopts the two-way solenoid valve 11 of the prior art, and the number of the two-way solenoid valves 11 is set to two, one is set on the vacuum pipeline 7 and one is set on the compressed air pipeline 8; in addition, the structure of the vacuum pump 6, the air source control box 5, the connection between the pipelines and the electrical control box 12 are exactly the same as those in Embodiment 1, and will not be elaborated in detail in this embodiment.

[0036] The use process of this embodiment refers to that of Embodiment 1. If a 260-bottle-size bottle is to be grasped, the bottle grasping head 2 is a suction cup-type bottle grasping head, the 260-bottle-size switch 13 on the electrical control box 12 is turned on, the two-way solenoid valve 11 on the vacuum line 7 is turned on, the two-way solenoid valve 11 on the compressed air line 8 is closed, and the vacuum pump 6 evacuates air to make the vacuum suction cup suck the top of the bottle cap to achieve grasping; if a 450- or 780-bottle-size bottle is to be grasped, the bottle grasping head 2 is an air bag-type bottle grasping head, the 450-bottle-size switch 14 on the electrical control box 12 is turned on, the two-way solenoid valve 11 on the compressed air line 8 is turned on, and the two-way solenoid valve 11 on the vacuum line 7 is closed. At this time, compressed air enters the air bag through the compressed air line 8 and the air line 9, and the air bag bulges and squeezes the bottleneck to achieve grasping.

[0037] It should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An air circuit switching system used in a Krones case packer, comprising a vacuum pump, an air source control box, a vacuum pipeline connected to the vacuum pump, a compressed air pipeline connected to the air source control box, and an air pipeline connected to a bottle grabbing head, wherein the end of the vacuum pipeline, the end of the compressed air pipeline and the end of the air pipeline away from the bottle grabbing head intersect at one point, and valves are provided on the vacuum pipeline and the compressed air pipeline, characterized in that: The valve is a solenoid valve and also includes an electrical control box which is used for controlling the switch of the solenoid valve and is electrically connected to the solenoid valve.

2. The gas circuit switching system used in the Krones case packing machine according to claim 1 is characterized in that: The valve is a two-way solenoid valve, and the number of the two-way solenoid valves is set to two, one is set on the vacuum pipeline and one is set on the compressed air pipeline.

3. The gas circuit switching system used in the Krones case packing machine according to claim 1 is characterized in that: The valve is a three-way solenoid valve with three interfaces. The three-way solenoid valve is arranged at the intersection of the vacuum pipeline, the compressed air pipeline and the gas pipeline. The vacuum pipeline, the compressed air pipeline and the gas pipeline are each connected to an interface.

4. The gas circuit switching system used in a Krones case packer according to any one of claims 1 to 3, characterized in that: The electrical control box is provided with a switching switch for controlling the connection of the vacuum pipeline or the compressed air pipeline.

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