Opening and closing performance detector for bag mouth

Abstract

The utility model discloses a bag mouth opening and closing performance detector, which comprises an instrument rack and bag mouth grippers, the instrument rack comprises a bottom plate and a cross beam, the cross beam and the bottom plate are arranged in parallel up and down, two vertical columns are symmetrically connected between the cross beam and the bottom plate, a detection area is formed between the cross beam and the bottom plate, and the two bag mouth grippers are movably installed in the detection area. The two bag opening grippers are symmetrically installed, the two vacuum suction cups can grab the two ends of a bag opening of a packaging bag respectively, a gripper driving mechanism is installed on the cross beam and is in transmission connection with the two bag opening grippers, and the two vacuum suction cups can be driven by the gripper driving mechanism to deviate from each other or get close to each other. According to the utility model, the bag mouth is grabbed through the vacuum chucks of the bag mouth grabber, the opening and closing movement effects of the bag mouth of the packaging bag are realized through the control of the deviating movement or the opposite movement of the two vacuum chucks, and the opening and closing performance experimental detection of the bag mouth of the packaging bag can be automatically and efficiently completed.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging quality inspection equipment, and more specifically, to a bag opening and closing detector. Background Art

[0002] During the use of packaging bags, the bag opening needs to expand and close. Therefore, the opening and closing performance of the bag opening is one of the important quality indicators of the packaging bag. Every newly designed packaging bag product needs to undergo the opening and closing quality inspection of the bag opening. The opening and closing performance of the bag opening is reflected in two aspects: one is the maximum expansion degree of the bag opening, and the other is the continuous maximum opening and closing times of the bag opening. Currently, there is a lack of suitable bag opening and closing performance testing equipment on the market. Enterprises still use manual labor to test the opening and closing performance of bag openings. Manual testing has the problems of low efficiency and low accuracy of experimental data. Therefore, enterprises urgently need to design an automated bag opening and closing performance testing equipment to meet quality inspection needs, which is the reason for this case. Utility Model Content

[0003] The purpose of the present invention is to solve the needs of the above-mentioned prior art and provide a bag opening and closing tester. The present invention uses the vacuum suction cup of the bag opening gripper to grasp the bag opening, and controls the diverging movement or opposite movement of the two vacuum suction cups to achieve the expansion and closing movement effect of the bag opening. The present invention can automatically and efficiently complete the opening and closing test of the bag opening.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A bag opening and closing tester is used for quality inspection of the bag opening position of packaging bags, comprising an instrument frame and a bag opening gripper, the instrument frame comprising a base plate and a crossbeam, the crossbeam and the base plate are arranged parallel to each other in an upper and lower manner, two columns are symmetrically connected between the crossbeam and the base plate, a detection area is formed between the crossbeam and the base plate, two bag opening grippers are movably installed in the detection area, vacuum suction cups are installed on the bag opening grippers, the two bag opening grippers are symmetrically installed, the two vacuum suction cups can respectively grasp the two ends of the bag opening of the packaging bag, a gripper driving mechanism is installed on the crossbeam, the gripper driving mechanism is connected to the two bag opening grippers in a transmission manner, and the two vacuum suction cups can be driven away from or close to each other through the gripper driving mechanism.

[0006] Furthermore, the bag mouth gripper includes an elastic telescopic mechanism and a linkage plate, the linkage plate is connected to the elastic telescopic mechanism, the linkage plate is installed upright, the gripper driving mechanism includes a driving block, the upper end of the plate surface of the linkage plate is in contact with the outer edge of the driving block, and the lower end of the plate surface of the linkage plate is installed with a vacuum suction cup.

[0007] Furthermore, the elastic telescopic mechanism includes a box body and a guide piston. The box body is fixedly installed under the crossbeam. A cavity is provided in the box body. The guide piston is installed in the cavity. The diameter of the guide piston matches the inner diameter of the cavity. A spring is connected to one side of the guide piston and a connecting rod is connected to the other side. One end of the connecting rod extends outward through the box body and is fixedly connected to the linkage plate.

[0008] Furthermore, the gripper drive mechanism also includes a motor, the motor is fixedly mounted on the crossbeam, and the drive block is fixedly connected to the output shaft of the motor.

[0009] Furthermore, the driving block is provided with two symmetrical convex points and two symmetrical flat points. The contact between the convex points and the linkage plate can form an effect of two vacuum suction cups moving away from each other, and the contact between the flat points and the linkage plate can form an effect of two vacuum suction cups moving towards each other.

[0010] Furthermore, a magnetic device is embedded in the bottom of the base plate.

[0011] The beneficial effects of the utility model are:

[0012] 1. The utility model uses the vacuum suction cups on the bag opening gripper to form an adsorption and gripping effect on the bag opening. The two vacuum suction cups respectively adsorb the two ends of the bag opening, and then the gripper driving mechanism is used to realize the effect of the two vacuum suction cups moving away from or towards each other. The result is that the bag opening can always achieve the effect of expanding and closing movement, so as to meet the requirements of the opening and closing test of the packaging bag bag.

[0013] 2. The utility model has the advantages of high degree of automation and convenient operation, which can facilitate quality inspectors to accurately collect the opening and closing quality data of the bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of a structure in this embodiment;

[0015] Figure 2 Schematic diagram of a structure in this embodiment;

[0016] Figure 3 Schematic diagram of a structure in this embodiment.

[0017] Figure numerals: instrument frame 1, base plate 11, magnetic device 111, beam 12, column 13, detection area 14, bag mouth gripper 2, vacuum suction cup 21, elastic telescopic mechanism 22, box body 221, cavity 222, guide piston 223, spring 224, connecting rod 225, linkage plate 23, gripper drive mechanism 3, motor 31, drive block 32, convex point 321, flat point 322. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] like Figure 1-Figure 3 The bag opening and closing detector shown is used for quality inspection of the bag opening position of the packaging bag, including an instrument frame 1 and a bag opening gripper 2. The instrument frame 1 includes a base plate 11 and a crossbeam 12. The crossbeam 12 and the base plate 11 are arranged parallel to each other in the upper and lower directions. Two columns 13 are symmetrically connected between the crossbeam 12 and the base plate 11. The crossbeam 12, the base plate 11 and the columns 13 form a stable shelf structure. A detection area 14 is formed between the crossbeam 12 and the base plate 11. Two bag opening grippers 2 are movably installed in the detection area 14. Each bag opening gripper 2 is equipped with a vacuum suction cup 21. The two bag opening grippers 2 are symmetrically installed. The two vacuum suction cups 21 are also symmetrically arranged. The packaging bag is installed between the two vacuum suction cups 21. The two vacuum suction cups 21 can respectively grab the bag opening of the packaging bag after forming vacuum suction. At both ends (the vacuum suction cup 21 pipeline is connected to the vacuum generator, and the vacuum suction force generation principle of the vacuum suction cup 21 is the existing technology, which will not be introduced here), a gripper driving mechanism 3 is installed on the beam 12, and the gripper driving mechanism 3 is transmission-connected to the two bag-opening grippers 2. The gripper driving mechanism 3 can drive the two vacuum suction cups 21 to move away from each other or move towards each other. Since the vacuum suction cup 21 adsorbs the outer wall of the bag opening, the two vacuum suction cups 21 can form an expansion effect of the bag opening when they move away from each other, and a closing effect of the bag opening when the two vacuum suction cups 21 move towards each other. The utility model can replace manual labor to complete the continuous opening and closing operation of the bag opening, which is very time-saving, labor-saving and efficient. The quality inspectors only need to complete the disassembly and assembly operations of the packaging bags. The utility model has the advantages of high degree of automation and convenient operation.

[0020] like Figure 1 As shown, the bag mouth gripper 2 includes an elastic telescopic mechanism 22 and a linkage plate 23. The linkage plate 23 is connected to the elastic telescopic mechanism 22. The linkage plate 23 is installed upright. The gripper driving mechanism 3 includes a driving block 32. The driving block 32 can rotate in a plane. The upper end of the plate surface of the linkage plate 23 maintains contact with the outer edge of the driving block 32. The lower end of the plate surface of the linkage plate 23 is provided with a vacuum suction cup 21. The driving block 32 has a regular concave and convex shape. Under the structural design of the plane rotation motion of the driving block 32 and the elastic connection of the linkage plate 23, the linkage plate 23 can be pushed, and finally the regular movement effect of the two vacuum suction cups 21 is achieved.

[0021] like Figure 3As shown, the elastic telescopic mechanism 22 includes a box body 221 and a guide piston 223. The box body 221 is fixedly installed under the beam 12 by supporting legs. A cavity 222 is provided in the box body 221. The box body 221 is installed horizontally, and the guide piston 223 is installed in the cavity 222. The diameter of the guide piston 223 matches the inner diameter of the cavity 222. The guide piston 223 plays a role in guiding movement, that is, it can only move horizontally. A spring 224 is connected to one side of the guide piston 223, and a connecting rod 225 is connected to the other side. One end of the connecting rod 225 passes through the box body 221 and extends outward and is fixedly connected to the linkage plate 23. It can be seen from the above structure that the spring 224 plays a role in supporting the linkage plate 23, and the force applied to the linkage plate 23 can be reflected on the spring 224. Therefore, the linkage plate 23 is elastically installed and connected.

[0022] like Figure 1 As shown, the gripper drive mechanism 3 also includes a motor 31, which is fixedly mounted on the beam 12, and the motor 31 is mounted vertically downward. The drive block 32 is fixedly connected to the output shaft of the motor 31. After the motor 31 is started, a continuous planar rotational motion effect of the drive block 32 can be formed.

[0023] like Figure 2 As shown, the driving block 32 is provided with two symmetrical convex points 321 and two symmetrical flat points 322. As the driving block 32 rotates, the two convex points 321 will contact the linkage plate 23. At this time, the linkage plate 23 is pushed in the direction of the elastic telescopic mechanism 22, and the spring 224 is compressed, which can form an effect of the two vacuum suction cups 21 moving away from each other. After the two vacuum suction cups 21 move away from each other, the bag opening will be effectively expanded. As the driving block 32 continues to rotate, it will come to the two flat points 322 and contact the linkage plate (23). At this time, the linkage plate 23 loses the external thrust. Under the action of the restoring force of the spring 224, the two linkage plates 23 reset and move closer together, and at the same time, the two vacuum suction cups 21 can move closer together. After the two vacuum suction cups 21 move closer together, the bag opening will be effectively closed. In the present utility model, The spacing between the two symmetrical convex points 321 determines the maximum expansion size of the bag opening. In actual use, since the maximum expansion sizes of the bag openings of different styles of packaging bags may be different, the connection between the drive block 32 and the output shaft of the motor 31 is designed to be a detachable fixed connection (such as a threaded connection). This makes it easy to replace different drive blocks 32 to match different styles of packaging bags. As the motor 31 continues to start, the bag opening of the packaging bag will repeatedly expand and close, so the continuous limit opening and closing times of the bag opening can be detected. The utility model determines the size of the bag opening opening each time by the size of the drive block 32, so that the degree of opening and closing of the bag opening each time can be guaranteed to be the same. Compared with the existing manual detection, the opening and closing movement degree is more accurate, and the quality inspection test data obtained is also more accurate.

[0024] like Figure 1As shown, a magnetic device 111 is embedded in the bottom of the base plate 11. The magnetic device 111 of the present invention has a function of switching magnetic force on and off. The present device is generally used in a quality inspection laboratory. The quality inspection laboratories of enterprises are all made of iron operating tables. By turning on the magnetic device 111, a magnetic effect can be formed, and the present invention can be conveniently fixed on the operating table. After turning off the magnetic device 111, a demagnetization effect can be formed, and the handling operation of the present invention can be performed.

[0025] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A bag opening and closing detector, used for quality inspection of the bag opening position of packaging bags, characterized in that: The invention comprises an instrument frame (1) and a bag mouth gripper (2), wherein the instrument frame (1) comprises a bottom plate (11) and a crossbeam (12), wherein the crossbeam (12) and the bottom plate (11) are arranged in parallel up and down, wherein two upright posts (13) are symmetrically connected between the crossbeam (12) and the bottom plate (11), and a detection area (14) is formed between the crossbeam (12) and the bottom plate (11), wherein the two bag mouth grippers (2) are movably installed in the detection area (14), wherein vacuum suction cups (21) are installed on the bag mouth grippers (2), wherein the two bag mouth grippers (2) are symmetrically installed, wherein the two vacuum suction cups (21) can respectively grasp the two ends of the bag mouth of the packaging bag, wherein a gripper driving mechanism (3) is installed on the crossbeam (12), wherein the gripper driving mechanism (3) is connected to the two bag mouth grippers (2) by transmission, and wherein the two vacuum suction cups (21) can be driven to move away from or toward each other by the gripper driving mechanism (3).

2. A bag opening and closing detector according to claim 1, characterized in that: The bag opening gripper (2) comprises an elastic telescopic mechanism (22) and a linkage plate (23), wherein the linkage plate (23) is connected to the elastic telescopic mechanism (22) and is installed vertically. The gripper driving mechanism (3) comprises a driving block (32), wherein the upper end of the plate surface of the linkage plate (23) is in contact with the outer edge of the driving block (32), and the lower end of the plate surface of the linkage plate (23) is installed with a vacuum suction cup (21).

3. The bag opening and closing detector according to claim 2, characterized in that: The elastic telescopic mechanism (22) comprises a box body (221) and a guide piston (223). The box body (221) is fixedly mounted below the crossbeam (12). A cavity (222) is provided in the box body (221). The guide piston (223) is mounted in the cavity (222). The diameter of the guide piston (223) matches the inner diameter of the cavity (222). One side of the guide piston (223) is connected to a spring (224), and the other side is connected to a connecting rod (225). One end of the connecting rod (225) passes through the box body (221) and then extends outward and is fixedly connected to the linkage plate (23).

4. The bag opening and closing detector according to claim 2, characterized in that: The gripper drive mechanism (3) further comprises a motor (31), wherein the motor (31) is fixedly mounted on the crossbeam (12), and the drive block (32) is fixedly connected to the output shaft of the motor (31).

5. The bag opening and closing detector according to claim 2, characterized in that: The driving block (32) is provided with two symmetrical convex points (321) and two symmetrical flat points (322). The contact between the convex points (321) and the linkage plate (23) can form an effect of the two vacuum suction cups (21) moving away from each other, and the contact between the flat points (322) and the linkage plate (23) can form an effect of the two vacuum suction cups (21) moving closer to each other.

6. The bag opening and closing detector according to claim 1, characterized in that: A magnetic attraction device (111) is embedded and installed at the bottom of the base plate (11).

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