Negative pressure cup taking and placing device of array type cup stacking machine

Abstract

A negative-pressure cup taking and placing device of an array type cup stacking machine comprises a positioning frame and a plurality of negative-pressure cup taking and placing units, each negative-pressure cup taking and placing unit comprises a mounting base and a cup opening sealing disc, an air pipe communicated with a vacuumizing device is arranged between the top face and the bottom face of the mounting base, and the top face of the mounting base is mounted on the positioning frame; the cup opening sealing disc is installed on the bottom face of the installation base, and a vacuumizing hole is formed in the middle of the cup opening sealing disc and communicated with the air pipe. The negative-pressure cup taking and placing unit has the advantages that due to the fact that the negative-pressure cup taking and placing unit is provided with the cup opening sealing disc, the plastic container cup opening in the corresponding die hole is blocked, vacuumizing can be conducted through the air pipe, the plastic container is adsorbed through external pressure, cup taking work can be completed without stretching into the plastic container, a descending process and a follow-up ascending process are omitted, and production efficiency is improved. The working efficiency can be improved; the inner side face of the auxiliary shielding inclined cover can make contact with a cup opening of the plastic container, gaps are reduced as much as possible, air is prevented from entering the plastic container, and therefore the vacuumizing effect is improved.

Description

Technical Field

[0001] The utility model relates to a negative pressure cup taking and placing device of an array type cup stacking machine. Background Art

[0002] At present, there are two types of plastic container cup making machines: one is a flip molded cup machine. After the air pressure thermoforming cup making machine automatically and quickly completes the shaping and punching, the lower mold body flips 90 degrees, and the cup bottom rod pushes the cup in the mold cavity out of the mold cavity to automatically stack and count the cups; however, the price of this equipment is particularly expensive, and due to the influence of the specifications and cavity number distance of the lateral mold cavity, the dense stacked cups, and the influence of the stacked cup guide frame, it is impossible to spot check the product quality in time. The other is a thermoforming cup making machine whose lower mold body cannot be flipped. Its upper mold body is fixed, and the lower mold body is raised and lowered. When it is lowered into place, the mold is closed, the shaping and punching are completed, and the mold is opened. When the lower mold body is in place, the cup bottom rod pushes the cup out of the mold cavity, and the high-pressure gas blows the cup out of the mold body. This air pressure thermoforming cup making machine that cannot flip the mold has similar production efficiency and cup making quality as the flip molded cup machine, but the price is one twentieth of the flip molded cup machine. Its disadvantage is that it cannot complete automatic counting and automatic cup stacking. At the same time, this cup making machine opens the mold after forming, punching and shearing, the mold bottom pushes the container out of the mold cavity, and the air pressure blows the cup out of the mold body and scatters it to the cup inspection position, and then the cup is inspected manually.

[0003] In order to solve the above problems, the commonly used cup stacking machine for plastic containers usually uses a robot to take out all the plastic containers in the mold of the molding machine at the same time, and then stack them into a long plastic container pile, and then send them out for packaging, so as to obtain the plastic container packaging we often see on the market. However, the disadvantage of this cup stacking method is that the mold of the molding machine usually has a large number of plastic containers, which are arranged in an array (such as 5 rows and 6 columns, 8 rows and 9 columns, etc.), and the action end of the robot is usually set on one side of the frame. The cup holder needs to be connected to the action end of the robot through a long arm. Therefore, the cup holder is prone to shaking during operation, which affects the accuracy of the cup taking action and easily causes the plastic container to be skewed, fall off, or unable to be taken out.

[0004] For example, a counting and stacking machine disclosed in a Chinese patent document with announcement number CN103086160A and name “Automatic high-speed cup picking counting and stacking machine” discloses a cup stacking method and cup stacking equipment. Its cup picking rack is connected to the action end of the manipulator through a long arm. Therefore, the cup picking rack is prone to shaking during operation, affecting the accuracy of the cup picking action, and easily causing the plastic containers to be skewed, dropped, or unable to be taken out. Moreover, the plastic containers are prone to misalignment during the stacking operation, so that the stacking fails completely, the plastic container is stuck in the cup mouth of the next plastic container, and the plastic container stack overturns. Moreover, the number and height of the plastic containers in the plastic container stack are greatly limited (i.e., the semi-finished plastic container stack). After being transferred to the packaging station, they need to be manually stacked and counted again to obtain a finished plastic container stack with a sufficient number of plastic containers before packaging. The work efficiency is low, so this technology cannot meet the needs of large-scale industrial production.

[0005] In order to solve the above technical problems, the applicant has made multiple improvements to the cup picking and placing mechanism and the stacking mechanism of the above cup stacking machine, so that the cup picking and placing mechanism can pick up and place cups smoothly, quickly and accurately, and the stacking mechanism can cooperate with the cup picking and placing mechanism to obtain plastic container stack products (because when packaging, plastic container stack products with a number of twenty to thirty or even more stacked together are usually packaged).

[0006] However, the applicant found that the improved cup picking and placing mechanism still uses the method of extending the vacuum suction cup into the plastic container to suck the bottom surface of the plastic container to complete the cup picking work. This means that once the mold of the molding machine is replaced and the depth of the plastic container is changed, the stroke of the vacuum suction cup needs to be adjusted, which makes the operation very troublesome. In addition, since the vacuum suction cup needs to descend to suck the plastic container and then rise to leave the mold, the cup picking steps involve too many actions and take a long time, but the number of actions cannot be reduced, which prevents the producer from further improving work efficiency. Utility Model Content

[0007] The purpose of the utility model is to provide a negative pressure cup picking and placing device for an array cup stacking machine, which can quickly complete the cup picking work on the surface of the mold. The technical solution adopted is as follows:

[0008] A negative pressure cup picking and placing device for an array cup stacking machine, characterized in that it includes a positioning frame and a plurality of negative pressure cup picking and placing units, the negative pressure cup picking and placing units include a mounting base, a cup mouth sealing disk, an air pipe connected to a vacuum device is opened between the top surface and the bottom surface of the mounting base, the top surface of the mounting base is mounted on the positioning frame, the cup mouth sealing disk is mounted on the bottom surface of the mounting base, a vacuum hole is opened in the middle of the cup mouth sealing disk, and the vacuum hole is connected to the air pipe. Since the negative pressure cup picking and placing device can complete the cup picking work without extending into the plastic container during the process of picking and placing the cup, compared with the traditional vacuum suction cup cup picking method, this section of the descending process and the subsequent ascending process are saved, thereby further improving work efficiency.

[0009] In a preferred solution, the negative pressure cup taking and placing unit further comprises an auxiliary shielding oblique cover, which is mounted on the bottom surface of the mounting base and is located outside the cup mouth sealing disk, and the auxiliary shielding oblique cover covers the outside of the cup mouth sealing disk. When the plastic container is sucked onto the cup mouth sealing disk, its cup mouth covers the cup mouth sealing disk from bottom to top, but there is still a gap between the cup mouth and the circumferential surface of the cup mouth sealing disk, so that air can easily enter the plastic container through the gap, and the inner side surface of the auxiliary shielding oblique cover can contact the cup mouth of the plastic container, try to reduce the gap, and prevent air from entering the plastic container, thereby improving the vacuum effect. Therefore, when the cup mouth size of the plastic container becomes slightly larger, the negative pressure cup taking and placing device can still be used.

[0010] In a more optimal solution, the inner side surface of the auxiliary shielding oblique cover extends from the bottom surface of the mounting base toward the outer side and lower side of the cup mouth sealing disk and separates the cup mouth sealing disk from the outside. In other words, there is no gap between the auxiliary shielding oblique cover and the bottom surface of the mounting base, and the outside air is prevented from entering the space between the auxiliary shielding oblique cover, the bottom surface of the mounting base, and the cup mouth sealing disk through the gap between the two, further preventing air from entering the plastic container, thereby improving the vacuuming effect.

[0011] In a preferred solution, the air pipe has an upwardly protruding extension section, the positioning frame is provided with air pipe through holes, the air pipe through holes and the air pipes of the negative pressure cup placement unit are the same in number and correspond one to one, and each air pipe passes through the corresponding air pipe through hole from bottom to top.

[0012] Compared with the prior art, the beneficial effect of the utility model is that, since the negative pressure cup taking and placing unit is provided with a cup mouth sealing plate, the cup mouth of the plastic container in the corresponding mold hole is blocked, and the air pipe can be used to draw a vacuum and the plastic container can be adsorbed by external pressure. Therefore, there is no need to reach into the plastic container to complete the cup taking work, which saves a section of descending process and a subsequent ascending process, and can improve work efficiency; and the inner side surface of the auxiliary shielding inclined cover can contact with the cup mouth of the plastic container, minimize the gap, and prevent air from entering the plastic container, thereby improving the vacuum effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a structural schematic diagram of an embodiment of the utility model;

[0014] Figure 2 yes Figure 1 a top view of the illustrated embodiment;

[0015] Figure 3 yes Figure 1 a bottom perspective view of the illustrated embodiment;

[0016] Figure 4 yes Figure 1 a bottom view of the illustrated embodiment;

[0017] Figure 5 yes Figure 1 A schematic structural diagram of a positioning frame in the illustrated embodiment;

[0018] Figure 6 yes Figure 1 A schematic structural diagram of a negative pressure cup picking and placing unit in the illustrated embodiment;

[0019] Figure 7 yes Figure 1 A bottom perspective view of the negative pressure cup placement unit of the illustrated embodiment;

[0020] Figure 8 yes Figure 1 A cross-sectional view of the negative pressure cup placement unit of the illustrated embodiment. DETAILED DESCRIPTION

[0021] like Figure 1-8 As shown, the negative pressure cup picking and placing device of the array cup stacking machine in one embodiment of the present application includes a positioning frame 1 and a plurality of negative pressure cup picking and placing units 2, the negative pressure cup picking and placing units 2 include a mounting base 201 and a cup mouth sealing disk 202, an air pipe 2011 connected to the vacuum device is opened between the top surface and the bottom surface of the mounting base 201, the top surface of the mounting base 201 is mounted on the positioning frame 1, the cup mouth sealing disk 202 is mounted on the bottom surface of the mounting base 201, a vacuum hole 2021 is opened in the middle of the cup mouth sealing disk 202, and the vacuum hole 2021 is connected to the air pipe 2011.

[0022] like Figure 6-8As shown, an optional embodiment of the present application, the negative pressure cup pick-up and place unit 2 further includes an auxiliary shielding oblique cover 203, which is mounted on the bottom surface of the mounting base 201 and is located on the outside of the cup mouth sealing disk 202, and the auxiliary shielding oblique cover 203 shields the outside of the cup mouth sealing disk 202. When the plastic container is sucked onto the cup mouth sealing disk 202, its cup mouth covers the cup mouth sealing disk 202 from bottom to top, but there is still a gap between the cup mouth and the circumferential surface of the cup mouth sealing disk 202, so that air can easily enter the plastic container from the gap, and the inner side surface of the auxiliary shielding oblique cover 203 can contact the cup mouth of the plastic container, try to reduce the gap, and prevent air from entering the plastic container, thereby improving the vacuum effect.

[0023] The angle a between the inner side surface of the auxiliary shielding oblique cover 203 and the plane where the bottom edge is located is in the range of 20-60 degrees.

[0024] like Figure 8 As shown, in an optional embodiment of the present application, the angle a between the inner side surface of the auxiliary shielding oblique cover 203 and the plane where the bottom edge is located is 20 degrees.

[0025] In an optional embodiment of the present application, the angle a between the inner side surface of the auxiliary shielding oblique cover 203 and the plane where the bottom edge is located is 30 degrees.

[0026] In an optional embodiment of the present application, the angle a between the inner side surface of the auxiliary shielding oblique cover 203 and the plane where the bottom edge is located is 60 degrees.

[0027] In an optional embodiment of the present application, the angle a between the inner side surface of the auxiliary shielding oblique cover 203 and the plane where the bottom edge is located is 40 degrees.

[0028] like Figure 6-8 As shown, an optional embodiment of the present application, the inner side surface of the auxiliary shielding oblique cover 203 extends from the bottom surface of the mounting base 201 toward the outer side and lower side of the cup mouth sealing disk 202 and separates the cup mouth sealing disk 202 from the outside. In other words, there is no gap between the auxiliary shielding oblique cover 203 and the bottom surface of the mounting base 201, and the outside air is prevented from entering the space between the auxiliary shielding oblique cover 203, the bottom surface of the mounting base 201, and the cup mouth sealing disk 202 through the gap between the two, further preventing air from entering the plastic container, improving the vacuum effect, so when the cup mouth size of the plastic container becomes slightly larger, the negative pressure cup taking and placing device can still be used, and the negative pressure cup taking and placing device has a wider range of application.

[0029] like Figure 6 , 8As shown, an optional embodiment of the present application, the trachea 2011 has an upwardly protruding extension section 20111, the positioning frame 1 is provided with a trachea through hole 101, the trachea through holes 101 and the trachea 2011 of the negative pressure cup placement unit 2 are the same in number and correspond one to one, and the extension section 20111 of each trachea 2011 passes through the corresponding trachea through hole 101 from bottom to top.

[0030] like Figure 8 As shown, an optional embodiment of the present application, two second screw holes 204 are opened between the top surface of the mounting base 201 and the bottom surface of the cup mouth sealing plate 202, and the positioning frame 1 has two first screw holes 102. The number of the first screw holes 101 of the positioning frame 1 is the same as that of all the second screw holes 204 and they correspond one to one. Each negative pressure cup picking and placing unit 2 uses screws (not shown) to pass through the corresponding first screw hole 102 and second screw hole 204 respectively and install the negative pressure cup picking and placing unit 2 on the positioning frame 1.

[0031] Combine the following Figure 1-8 The working process of this embodiment is introduced:

[0032] When taking the cup, first the positioning frame 1 moves to the top of the mold of the molding machine; then the positioning frame 1 descends until the cup mouth sealing disk 202 of each negative pressure cup taking and placing unit 2 respectively blocks the cup mouth of the plastic container in the corresponding mold hole (at this time, the inner side of the auxiliary shielding inclined cover 203 can contact the cup mouth of the plastic container), and then the vacuum device works, and the air in each plastic container is sucked away through the vacuum hole 2021 and the air pipe 2011 of the cup mouth sealing disk 202 located at the cup mouth and forms a vacuum, so that the plastic container is sucked onto the cup mouth sealing disk 202, and finally the positioning frame 1 rises, taking the plastic container away from the mold, and then the positioning frame 1 moves to the cup stacking station of the cup stacking machine and puts down all the plastic containers.

[0033] During the process of taking and placing the cup, the negative pressure cup taking and placing device can complete the cup taking work without extending into the plastic container. Compared with the traditional vacuum suction cup cup taking method, this section of the descending process and the subsequent ascending process are saved, thereby further improving work efficiency.

[0034] In addition, it should be noted that the names of the various parts of the specific embodiments described in this specification may be different, and any equivalent or simple changes made based on the structure, features and principles described in the utility model patent concept are included in the protection scope of the utility model patent. The technical personnel of the technical field to which the utility model belongs can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. A negative pressure cup picking and placing device for an array cup stacking machine, characterized in that: It includes a positioning frame and multiple negative pressure cup picking and placing units. The negative pressure cup picking and placing units include a mounting base and a cup mouth sealing disk. An air pipe connected to a vacuum device is opened between the top surface and the bottom surface of the mounting base. The top surface of the mounting base is mounted on the positioning frame, and the cup mouth sealing disk is mounted on the bottom surface of the mounting base. A vacuum hole is opened in the middle of the cup mouth sealing disk, and the vacuum hole is connected to the air pipe.

2. The negative pressure cup taking and placing device of the array cup stacking machine according to claim 1, characterized in that: The negative pressure cup picking and placing unit also includes an auxiliary shielding oblique cover, which is installed on the bottom surface of the mounting base and is located outside the cup mouth sealing disk. The auxiliary shielding oblique cover covers the outside of the cup mouth sealing disk.

3. The negative pressure cup taking and placing device of the array cup stacking machine according to claim 2, characterized in that: The angle between the inner side surface of the auxiliary shielding oblique cover and the plane where the bottom edge is located is in the range of 20-60 degrees.

4. The negative pressure cup placing and taking device of the array cup stacking machine according to claim 2, characterized in that: The inner side surface of the auxiliary shielding oblique cover extends from the bottom surface of the mounting base toward the lower outer side of the cup mouth sealing disk and separates the cup mouth sealing disk from the outside.

5. The negative pressure cup taking and placing device of the array cup stacking machine according to any one of claims 1 to 4, characterized in that: The trachea has an upwardly protruding extension section, and the positioning frame is provided with trachea through holes. The trachea through holes are the same in number and correspond one to one with the trachea of ​​the negative pressure cup taking and placing unit, and each trachea passes through the corresponding trachea through hole from bottom to top.

6. The negative pressure cup taking and placing device of the array cup stacking machine according to any one of claims 1 to 4, characterized in that: At least one second screw hole is provided between the top surface of the mounting base and the bottom surface of the cup mouth sealing plate, and at least one first screw hole is provided on the positioning frame. The number of the first screw holes on the positioning frame is the same as that of all the second screw holes and they correspond one to one. Each negative pressure cup picking and placing unit uses screws to pass through the corresponding first screw hole and second screw hole respectively and install the negative pressure cup picking and placing unit on the positioning frame.

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