Plastic bottle air tightness detection equipment

Abstract

The utility model relates to a plastic bottle air tightness detection device, comprising a conveyer belt mechanism used for conveying plastic bottles; support stand columns are arranged below the conveying belt supports; the guide rod assembly is used for guiding the multiple plastic bottles to be conveyed in a single row and comprises a long guide rod arranged on one side of the conveying belt mechanism, two sets of opposite short guide rods arranged on the other side of the conveying belt mechanism and a plurality of lifting guide rods arranged between the two sets of short guide rods in a lifting mode. The detection assemblies are arranged above the conveying belt mechanism side by side and correspond to the lifting guide rods; the push rod assemblies are arranged on one side of the long guide rod and correspond to the lifting guide rods, and each push rod assembly comprises a telescopic ejector block; and the jacking block is used for jacking the plastic bottles on the lifting guide rod or jacking the unqualified plastic bottles away from the conveying belt mechanism after the lifting guide rod descends. The plastic bottle air tightness detection equipment is provided to automatically take out unqualified bottle bodies, and is simple in structure and high in space utilization rate.

Description

Technical Field

[0001] The utility model relates to the technical field of airtightness detection equipment, in particular to an airtightness detection equipment for plastic bottles. Background Technique

[0002] Due to its characteristics of not being easily broken, convenient to carry, low cost, high transparency, etc., plastic bottles are widely used in the packaging of liquids or solids such as beverages, foods, and edible oils. After the plastic bottles are produced and processed, they are conveyed along the conveyor belt. During the conveying process, it is necessary to detect the airtightness of the plastic bottles. The existing detection equipment is to erect multiple groups of liftable inflation devices above the conveyor belt. After multiple plastic bottles are conveyed below the inflation devices, the inflation devices are lowered and tightly connected to the plastic bottle mouths, and then a fixed amount of gas is filled into the plastic bottles, and the change of the gas pressure is observed to detect the airtightness of the bottle body. The unqualified bottles after detection need to be taken out manually or by a manipulator. The manual taking-out method has repeated operations, low efficiency and large labor intensity; the manipulator taking-out method has a complex structure and a large floor space. Therefore, a method for automatically taking out unqualified bottles with a small floor space and high efficiency is needed. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an airtightness detection equipment for plastic bottles to realize the automatic taking out of unqualified bottles and have a simple structure and high space utilization rate.

[0004] To solve the above problems, the technical solution adopted by the utility model is:

[0005] An airtightness detection equipment for plastic bottles, which includes:

[0006] A conveyor belt mechanism for conveying plastic bottles;

[0007] A number of conveyor belt supports, with support columns arranged below them, for supporting the conveyor belt mechanism;

[0008] A guide rod assembly for guiding a number of the plastic bottles to be conveyed in a single row, which includes a long guide rod arranged on one side of the conveyor belt mechanism, two sets of opposite short guide rods arranged on the other side of the conveyor belt mechanism, and a number of lifting guide rods that can be lifted and arranged between the two sets of short guide rods;

[0009] A number of detection components, arranged side by side above the conveyor belt mechanism and corresponding to the lifting guide rods, for detecting the airtightness of the plastic bottles;

[0010] A number of push rod assemblies, arranged on one side of the long guide rod and corresponding to the lifting guide rods, the push rod assemblies include retractable top blocks; the top blocks are used to tightly press the plastic bottles against the lifting guide rods, or to push the unqualified plastic bottles away from the conveyor belt mechanism after the lifting guide rods are lowered.

[0011] As an implementation manner of the present utility model, the push rod assembly further includes a push rod support plate, a push rod fixing block fixed on the push rod support plate, and an electric push rod disposed on one side of the push rod fixing block. One end of the telescopic rod of the electric push rod penetrates through the push rod fixing block and is connected to the top block. An arc portion corresponding to the plastic bottle is disposed at one end of the top block facing the plastic bottle, for tightly pressing and limiting the plastic bottle.

[0012] As an implementation manner of the present utility model, a plurality of guide rod driving cylinders are fixedly provided on one side of the conveyor belt mechanism. The lifting guide rod is fixed at the end of the telescopic rod of the guide rod driving cylinder. The guide rod driving cylinder drives the telescopic rod to expand and contract to drive the lifting guide rod to lift.

[0013] As an implementation manner of the present utility model, the side of the lifting guide rod facing the plastic bottle is flush with the side of the short guide rod facing the plastic bottle. The lifting guide rod at the end corresponds to the end of the short guide rod to receive and guide the plastic bottle.

[0014] As an implementation manner of the present utility model, the side of the short guide rod facing the plastic bottle is flush with the side wall of the conveyor belt mechanism. After the lifting guide rod descends, its upper end surface is located below the upper end surface of the conveyor belt mechanism.

[0015] As an implementation manner of the present utility model, a waste basket is provided on one side of the conveyor belt mechanism corresponding to a plurality of the lifting guide rods to receive the fallen plastic bottles.

[0016] As an implementation manner of the present utility model, a workbench is provided on one side of the conveyor belt mechanism. A detection support is provided on the workbench. The detection support includes two sets of column connecting beams erected above the workbench through a plurality of support columns and a detection support beam connected and arranged between the two column connecting beams. The detection support beam is located above the conveyor belt mechanism. A plurality of the detection components are fixedly arranged side by side on the detection support beam;

[0017] A plurality of the push rod assemblies are fixedly arranged side by side on the workbench.

[0018] As an implementation manner of the present utility model, the detection component includes a detection fixing block fixed on the detection support beam, a lifting cylinder and a sealing cover arranged above the detection fixing block. The telescopic rod of the lifting cylinder penetrates through the detection fixing block and is connected to the sealing cover. The lifting cylinder drives the telescopic rod to extend so that the sealing cover descends to fasten the bottle mouth of the plastic bottle. The lifting cylinder drives the telescopic rod to contract so that the sealing cover rises to reset;

[0019] One side of the upper part of the sealing cover is provided with an air inlet pipe, and the air inlet pipe is communicated with the cavity in the sealing cover for filling gas into the plastic bottle.

[0020] The beneficial effects produced by adopting the above technical solutions are as follows:

[0021] On one side of the conveyor belt mechanism of the present application, a plurality of liftable lift guide rods are provided, which have three functions: after the lift guide rods rise to the in-place position, the plurality of lift guide rods form an integral guide rod, which corresponds to the two short guide rods and cooperates with the long guide rod to form a guiding channel for guiding the conveying of the bottle body; after the push rod assembly extends the top block, the lift guide rods cooperate with it to clamp and limit the plastic bottle, which is used to assist the alignment of the bottle mouth with the detection assembly for airtightness detection; after the lift guide rods descend, the top block continues to extend, and the unqualified bottle body can be pushed away from the conveyor belt mechanism to complete the screening of the unqualified bottle body. Thus, a plastic bottle airtightness detection device with high space utilization rate, capable of automatically removing unqualified bottle bodies and increasing the efficiency of the detection production line is provided. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of the embodiment.

[0023] Figure 2 is Figure 1 A schematic structural diagram from another angle.

[0024] Figure 3 It is a schematic structural diagram of the cooperation of the detection assembly, the push rod assembly and the lift guide rod assembly in the embodiment.

[0025] Figure 4 is Figure 3 A schematic structural diagram from another angle.

[0026] Wherein: 1 conveyor belt mechanism; 2 conveyor belt support; 2-1 support column;

[0027] 3 long guide rod; 4 short guide rod; 5 workbench;

[0028] 6 detection bracket; 6-1 bracket column; 6-2 column connecting beam; 6-3 detection support beam;

[0029] 7 detection assembly; 7-1 detection fixing block; 7-2 lifting cylinder; 7-3 sealing cover; 7-4 air inlet pipe;

[0030] 8 push rod assembly; 8-1 push rod support plate; 8-2 push rod fixing block; 8-3 electric push rod; 8-4 top block;

[0031] 9 lift guide rod assembly; 9-1 guide rod driving cylinder; 9-2 lift guide rod; 9-3 cylinder fixing bracket;

[0032] 10 Scrap basket; 11 Plastic bottle. Specific implementation mode

[0033] To make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be clearly and completely described below in conjunction with specific embodiments.

[0034] As Figures 1 to 4 shown, a plastic bottle airtightness detection device includes:

[0035] A conveyor belt mechanism 1 for conveying plastic bottles 11. In this embodiment, the plastic bottles 11 on the conveyor belt mechanism 1 are intermittently conveyed in a single row, and two adjacent plastic bottles 11 are in close contact with each other;

[0036] Two sets of conveyor belt supports 2 arranged oppositely, with support columns 2-1 provided below them for supporting the conveyor belt mechanism 1;

[0037] A guide rod assembly for guiding a plurality of plastic bottles 11 to be conveyed in a single row. It includes a long guide rod 3 provided on one side of the conveyor belt mechanism 1, two sets of short guide rods 4 arranged oppositely on the other side of the conveyor belt mechanism 1, and five sets of lifting guide rods 9-2 that can be lifted and lowered between the two sets of short guide rods 4;

[0038] Five sets of detection components 7 are arranged side by side above the conveyor belt mechanism 1 and correspond to the lifting guide rods 9-2 for detecting the airtightness of the plastic bottles 11;

[0039] Five sets of push rod assemblies 8 are provided on one side of the long guide rod 3 and correspond to the lifting guide rods 9-2. The push rod assembly 8 includes a retractable top block 8-4; the top block 8-4 is used to tightly press the plastic bottle 11 against the lifting guide rod 9-2, or to push the unqualified plastic bottle 11 away from the conveyor belt mechanism 1 after the lifting guide rod 9-2 descends.

[0040] For details, see Figure 3 and Figure 4 , the push rod assembly 8 further includes a push rod support plate 8-1 fixed to the workbench 5 through a bolt assembly, a push rod fixing block 8-2 fixed on the push rod support plate 8-1, and an electric push rod 8-3 provided on one side of the push rod fixing block 8-2. One end of the telescopic rod of the electric push rod 8-3 passes through the push rod fixing block 8-2 and is connected to the top block 8-4. The end of the top block 8-4 facing the plastic bottle 11 is provided with an arc portion corresponding to the plastic bottle 11 for tightly pressing and limiting the plastic bottle 11, and at the same time has a correction function to make the bottle mouth and the sealing cap 7-3 face each other up and down.

[0041] As Figure 3 and Figure 4As shown, several guide rod driving cylinders 9-1 are fixedly arranged on one side of the conveyor belt mechanism 1. The lifting guide rod 9-2 is fixedly arranged at the end of the telescopic rod of the guide rod driving cylinder 9-1. The guide rod driving cylinder 9-1 drives the telescopic rod to expand and contract to drive the lifting guide rod 9-2 to lift and lower. Refer to Figure 4 , a cylinder fixing bracket 9-3 with a cross-section in the shape of "┌" is fixedly arranged at the bottom of the conveyor belt mechanism 1. Its horizontal part is fixedly connected to the conveyor belt mechanism 1, and its vertical part is connected to the lower end of the guide rod driving cylinder 9-1 for fixing the guide rod driving cylinder 9-1.

[0042] Refer to Figure 3 and Figure 4 , the side of the lifting guide rod 9-2 facing the plastic bottle 11 is flush with the side of the short guide rod 4 facing the plastic bottle 11. The lifting guide rod 9-2 at the end corresponds to the end of the short guide rod 4 to receive and guide the plastic bottle 11. Specifically, one end of the lifting guide rod 9-2 is flush with or staggered from the end of the short guide rod 4 to ensure the receiving effect. In this embodiment, the flush method is adopted. The side of the short guide rod 4 facing the plastic bottle 11 is flush with the side wall of the conveyor belt mechanism 1. After the lifting guide rod 9-2 descends, its upper end surface is located below the upper end surface of the conveyor belt mechanism 1. A waste basket 10 is arranged on one side of the conveyor belt mechanism 1 corresponding to five groups of the lifting guide rods 9-2 to receive the fallen plastic bottles 11. A workbench 5 is arranged on one side of the conveyor belt mechanism 1. A detection bracket 6 is arranged on the workbench 5. The detection bracket 6 includes two sets of column connecting beams 6-2 erected above the workbench 5 through two bracket columns 6-1 and a detection support beam 6-3 connected and arranged between the two column connecting beams 6-2. The detection support beam 6-3 is located above the conveyor belt mechanism 1. Five groups of the detection components 7 are fixedly arranged side by side on the detection support beam 6-3.

[0043] Refer to Figure 3 and Figure 4 , the detection component 7 includes a detection fixing block 7-1 fixedly arranged on the detection support beam 6-3, a lifting cylinder 7-2 arranged above the detection fixing block 7-1, and a sealing cover 7-3. The telescopic rod of the lifting cylinder 7-2 passes through the detection fixing block 7-1 and is connected to the sealing cover 7-3. The lifting cylinder 7-2 drives the telescopic rod to extend so that the sealing cover 7-3 descends to fasten the mouth of the plastic bottle 11. The lifting cylinder 7-2 drives the telescopic rod to contract so that the sealing cover 7-3 rises to reset. One side of the upper part of the sealing cover 7-3 is provided with an air inlet pipe 7-4. The air inlet pipe 7-4 is communicated with the cavity inside the sealing cover 7-3 for filling gas into the plastic bottle 11. The other end of the air inlet pipe 7-4 is communicated with a detection mechanism to fill a fixed amount of gas and measure the change in air pressure.

[0044] The specific detection method is as follows:

[0045] 1. After the conveyor belt mechanism 1 conveys five plastic bottles 11 below the 5 groups of detection components, the conveying stops.

[0046] 2. After the 5 groups of in-place sensors arranged on the workbench all capture the in-place information of the plastic bottles 11, the controller controls the top block 8-4 of the push rod assembly to extend to a preset position, and uses the arc part to tightly hold and limit the bottle body on the lifting guide rod 9-2.

[0047] 3. The controller detects that the sealing cover 7-3 of the detection component 7 descends and buckles on the bottle mouth, and the detection mechanism works to measure the change in air pressure inside the bottle, and feeds back the model of the unqualified bottle body to the controller.

[0048] 4. The controller controls the sealing cover 7-3 of the detection component to rise, and controls the small stroke retraction of the top block 8-4 corresponding to the unqualified bottle body. Then the lifting guide rail 9-2 descends, and the top block 8-4 extends to push the plastic bottle 11 into the waste basket 10.

[0049] 5. The controller controls the top block 8-4 to retract and reset, and controls the lifting guide rail 9-2 to rise and reset.

[0050] 6. The conveyor belt mechanism 1 continues to convey, conveys five plastic bottles 11 below the 5 groups of detection components, and then stops conveying.

[0051] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An airtightness detection device for plastic bottles, characterized in that, It includes: a conveyor belt mechanism (1) for conveying plastic bottles (11); a number of conveyor belt supports (2) with support columns (2-1) provided below them for supporting the conveyor belt mechanism (1); a guide rod assembly for guiding a number of the plastic bottles (11) to be conveyed in a single row, which includes a long guide rod (3) arranged on one side of the conveyor belt mechanism (1), two sets of opposite short guide rods (4) arranged on the other side of the conveyor belt mechanism (1), and a number of lifting guide rods (9-2) that can be lifted and lowered between the two sets of short guide rods (4); a number of detection components (7) arranged side by side above the conveyor belt mechanism (1) and corresponding to the lifting guide rods (9-2) for detecting the airtightness of the plastic bottles (11); a number of push rod assemblies (8) arranged on one side of the long guide rod (3) and corresponding to the lifting guide rods (9-2), the push rod assembly (8) includes a retractable top block (8-4); the top block (8-4) is used to press the plastic bottle (11) tightly against the lifting guide rod (9-2), or to push the unqualified plastic bottle (11) away from the conveyor belt mechanism (1) after the lifting guide rod (9-2) descends.

2. The airtightness detection device for a plastic bottle according to claim 1, characterized in that, The push rod assembly (8) further includes a push rod support plate (8-1), a push rod fixing block (8-2) fixed on the push rod support plate (8-1), and an electric push rod (8-3) arranged on one side of the push rod fixing block (8-2). One end of the telescopic rod of the electric push rod (8-3) passes through the push rod fixing block (8-2) and is connected to the top block (8-4). The end of the top block (8-4) facing the plastic bottle (11) is provided with an arc portion corresponding to the plastic bottle (11) for pressing and limiting the plastic bottle (11).

3. The airtightness detection device for a plastic bottle according to claim 1, wherein, A number of guide rod driving cylinders (9-1) are fixedly arranged on one side of the conveyor belt mechanism (1), and the lifting guide rod (9-2) is fixedly arranged at the end of the telescopic rod of the guide rod driving cylinder (9-1). The guide rod driving cylinder (9-1) drives the telescopic rod to expand and contract to drive the lifting guide rod (9-2) to lift and lower.

4. A plastic bottle airtightness detection device according to claim 1, characterized in that, The side of the lifting guide rod (9-2) facing the plastic bottle (11) is flush with the side of the short guide rod (4) facing the plastic bottle (11). The lifting guide rod (9-2) at the end corresponds to the end of the short guide rod (4) to receive and guide the plastic bottle (11).

5. The airtightness detection device for a plastic bottle according to claim 4, characterized in that, The side of the short guide rod (4) facing the plastic bottle (11) is flush with the side wall of the conveyor belt mechanism (1). After the lifting guide rod (9-2) descends, its upper end surface is located below the upper end surface of the conveyor belt mechanism (1).

6. The airtightness detection device for a plastic bottle according to claim 5, characterized in that, A waste basket (10) is arranged on one side of the conveyor belt mechanism (1) corresponding to a number of the lifting guide rods (9-2) to receive the falling plastic bottles (11).

7. An airtightness detection device for plastic bottles according to claim 1, characterized in that, One side of the conveyor belt mechanism (1) is provided with a workbench (5). A detection support (6) is arranged on the workbench (5). The detection support (6) includes two sets of column connecting beams (6-2) erected above the workbench (5) through a number of support columns (6-1) and a detection support beam (6-3) connected and arranged between the two column connecting beams (6-2). The detection support beam (6-3) is located above the conveyor belt mechanism (1). A number of the detection components (7) are fixedly arranged side by side on the detection support beam (6-3); A number of the push rod components (8) are fixedly arranged side by side on the workbench (5).

8. A plastic bottle airtightness detection device according to claim 7, characterized in that, The detection component (7) includes a detection fixing block (7-1) fixedly arranged on the detection support beam (6-3), a lifting cylinder (7-2) and a sealing cover (7-3) arranged above the detection fixing block (7-1). The telescopic rod of the lifting cylinder (7-2) penetrates through the detection fixing block (7-1) and is connected to the sealing cover (7-3). The lifting cylinder (7-2) drives the telescopic rod to extend so that the sealing cover (7-3) descends to fasten the mouth of the plastic bottle (11). The lifting cylinder (7-2) drives the telescopic rod to contract so that the sealing cover (7-3) rises to reset; One side of the upper part of the sealing cover (7-3) is provided with an air inlet pipe (7-4). The air inlet pipe (7-4) is communicated with the cavity in the sealing cover (7-3) and is used for filling gas into the plastic bottle (11).

Images