A carton testing apparatus

Abstract

The utility model discloses a carton testing arrangement relates to carton testing technical field, including the movable plate, the bearing plate and the storage plate that are from top to bottom layout on the frame, and movable plate and bearing plate can be along the vertical activity, movable plate bottom is evenly provided with a plurality of electromagnet, and every electromagnet is all magnetically absorbed with the weight, to when carton is placed on the storage plate and is pressed by bearing plate, movable plate can make the similar action to bearing plate downward, to place the weight on bearing plate or attract the weight on bearing plate back. The utility model discloses through the movable plate, the bearing plate and the storage plate of layered layout, cooperate the magnetic attraction type design of electromagnet and weight, conveniently realize the placement and suction of the weight on bearing plate, and the test of the influence of the carton of different degree pressing effect is efficiently completed. Compared with the manual weight taking and placing in the prior art, the weight taking and placing mode of the application is simple, and is suitable for high frequency test work.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box testing technology, and specifically to a cardboard box testing device. Background Technology

[0002] For the film packaging bags produced by our company, they are generally packed and transported in cardboard boxes. During the transportation process by truck, the cardboard boxes are stacked in multiple layers in the truck compartment. Based on the stability, safety and protection requirements of the transportation and the protection of the packaging bags, it is necessary to ensure that the compressive strength of the cardboard boxes can meet the transportation requirements. Therefore, it is necessary to conduct a compressive strength test on the cardboard boxes.

[0003] A search revealed that patent document CN219552126U discloses a testing fixture for packaging cartons. This testing fixture includes a base and a load-bearing pressure plate. The center of the base is used to place the packaging cartons. The load-bearing pressure plate is arranged opposite to the base and can cover the upper surface of the packaging cartons. Weights are placed on the load-bearing pressure plate. One of the base and the load-bearing pressure plate is provided with a guide post, and the other has a guide hole. The guide post can be inserted into the guide hole.

[0004] The aforementioned testing fixture involves placing weights of appropriate weight on a load-bearing pressure plate, allowing it to stand for a certain period, and then removing the weights and pressure plate sequentially to observe the deformation of the packaging carton. However, this testing method requires manual operation during the removal and placement of weights, and when conducting various compression tests on the carton with different numbers of weights, it requires frequent manual removal and placement of weights, making the operation quite cumbersome.

[0005] To address this problem, we propose a carton testing device. Utility Model Content

[0006] The purpose of this invention is to provide a carton testing device to solve the problems in the prior art. This testing device uses multiple electromagnets that can lift and lower to facilitate the placement and removal of weights. It is suitable for high-frequency testing and has the advantages of simple operation and high testing efficiency.

[0007] To solve the above problems, this utility model provides the following technical solution:

[0008] A carton testing device includes a movable plate, a load-bearing plate, and a placement plate arranged from top to bottom on a frame. Both the movable plate and the load-bearing plate can move vertically. Multiple electromagnets are evenly distributed at the bottom of the movable plate, and each electromagnet has a weight magnetically attracted to it. When the carton is placed on the placement plate and pressed down by the load-bearing plate, the movable plate can move downward toward the load-bearing plate to place a weight on the load-bearing plate or to pull back a weight from the load-bearing plate.

[0009] As a further embodiment of this utility model: a cylinder is fixedly provided at the bottom of the movable plate, and the cylinder is located at the periphery of the electromagnet, so that when the weight is magnetically attracted by the electromagnet, the weight is arranged in an inserted state on the cylinder.

[0010] As a further embodiment of this utility model, the testing device also includes multiple insert plates of the same weight but different bottom areas. The bottom of the load-bearing plate is provided with a slot, and one of the multiple insert plates is inserted into the slot.

[0011] As a further embodiment of this utility model: a fixed pulley is provided on the frame above the movable plate, and a wire harness with one end connected to the movable plate is wound on the fixed pulley.

[0012] As a further embodiment of this utility model: the shelf is provided with a clamp, the clamp includes two sets of clamping blocks that are horizontally slidably installed on the shelf and a rotating shaft that is rotatably installed on the shelf. The rotating shaft has two threaded sections with opposite directions of rotation. The bottom ends of the two clamping blocks are respectively threaded onto the two threaded sections, and an adjustable limiting area is formed between the two clamping blocks.

[0013] As a further embodiment of this utility model: the top of the load-bearing plate is provided with a plurality of receiving slots for receiving weights, and the plurality of receiving slots are respectively set to correspond one-to-one with the plurality of weights.

[0014] As a further embodiment of this utility model: the side of the frame is provided with a sliding groove for the movable installation of the load-bearing plate and the movable plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This testing device, with its layered layout of movable plates, load-bearing plates, and storage plates, combined with the magnetic attraction design of electromagnets and weights, facilitates the placement and removal of weights on the load-bearing plates, efficiently testing the impact of different degrees of pressure on cardboard boxes. Compared to the manual placement and removal of weights in existing technologies, this application offers a simpler method for weight placement and removal, suitable for high-frequency testing.

[0017] 2. The design of the cylinder surrounding the electromagnet creates a physical guide and limit when the weights are attracted, preventing accidental detachment due to external vibration or electromagnetic interference. The insertion layout ensures that the center of gravity of the weights is always aligned with the axis of the electromagnet, reducing energy loss during the magnetic attraction process.

[0018] 3. By using interchangeable bottom plates and slots, the effective load-bearing area of ​​the load-bearing plate can be quickly adjusted to simulate the compression resistance of a cardboard box under different area pressing conditions. This modular design shortens the test parameter switching time and significantly improves the efficiency of multi-condition testing.

[0019] 4. The limiting area in the fixture can restrict the position of the carton, ensuring that the carton is in the same position when undergoing different pressing tests, thus guaranteeing the accuracy of the test.

[0020] 5. The one-to-one correspondence between the receiving groove and the weight ensures that the weight is accurately embedded in the groove when it falls, eliminating the problem of uneven load distribution caused by positional deviation. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 This is a front view schematic diagram of the structure of this utility model. Figure 1 ;

[0023] Figure 2 This is a front view schematic diagram of the structure of this utility model. Figure 2 ;

[0024] Figure 3 This is a front view schematic diagram of the structure of this utility model. Figure 3 ;

[0025] Figure 4 This is a front view schematic diagram of the structure of this utility model. Figure 4 ;

[0026] Figure 5 This is a three-dimensional structural diagram of the movable plate of this utility model;

[0027] Figure 6 This is a front view schematic diagram of the load-bearing plate structure of this utility model. Figure 1 ;

[0028] Figure 7 This is a front view schematic diagram of the load-bearing plate structure of this utility model. Figure 2 ;

[0029] Figure 8 This is a front view schematic diagram of the load-bearing plate structure of this utility model. Figure 3 .

[0030] In the diagram: 1. Frame; 2. Movable plate; 3. Load-bearing plate; 4. Storage plate; 5. Electromagnet; 6. Weight; 7. Cylinder; 8. Insert plate; 9. Slot; 10. Fixed pulley; 11. Wire harness; 12. Clamping block; 13. Rotating shaft; 14. Receiving groove; 15. Slide groove; a. Cardboard box. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figures 1-5 As shown, a carton testing device includes a frame 1. A movable plate 2, a load-bearing plate 3, and a placement plate 4 are arranged sequentially from top to bottom on the frame 1. The placement plate 4 is fixedly installed on the frame 1 and used to support a carton a. A sliding groove 15 is provided on the side of the frame 1, and both the load-bearing plate 3 and the movable plate 2 are slidably installed on the sliding groove 15 along the vertical direction. Multiple electromagnets 5 are evenly arranged at the bottom of the movable plate 2, and each electromagnet 5 is magnetically attached to a weight 6. During testing, the carton a is placed on the placement plate 4, and then the load-bearing plate 3 is pressed against the top of the carton a. The movable plate 2 is then driven downwards towards the load-bearing plate 3 until the weight 6 touches the top of the load-bearing plate 3. Then, according to the pressure to be tested, several electromagnets 5 are de-energized, causing the weights 6 corresponding to those electromagnets 5 to lose their attraction and fall onto the load-bearing plate 3. The weight of the load-bearing plate 3 and the weights 6 apply pressure to the top of the carton a. In subsequent testing, the number of times different electromagnets 5 are de-energized can be controlled to make the corresponding number of weights 6 fall on the load-bearing plate 3, thus achieving testing under different gravities.

[0033] After the test is completed, the movable plate 2 can be driven downwards until the electromagnet 5 touches the top of the weight 6. At this point, the electromagnet 5 is energized, and the weight 6 is attracted. Subsequently, the movable plate 2 is driven upwards, thus realizing the retrieval of the weight 6. Compared with the manual handling of the weight 6 in the prior art, this application, through the setting of multiple electromagnets 5, can control the placement and retrieval of multiple weights 6 without manual operation. In high-frequency testing, the handling of the weight 6 in this application is simple and saves testing time.

[0034] When performing a pressing test on carton a using different numbers of weights 6, in order to ensure that carton a is in the same position each time the test is performed and to reduce the test error, this application provides a clamp on the placement plate 4. The clamp can be any clamping component in the prior art, such as a spring clamp or a bench vise. This article describes the structure of a bench vise: The clamp includes two sets of clamping blocks 12 that are horizontally slidably mounted on the placement plate 4 and a rotating shaft 13 that is rotatably mounted on the placement plate 4. The rotating shaft 13 has two threaded sections with opposite directions of rotation. The bottom ends of the two clamping blocks 12 are respectively threaded onto the two threaded sections. An adjustable limiting area is formed between the two clamping blocks 12. The limiting area is used to restrict the position of carton a so that carton a is in the same position when performing different pressing tests. The restriction on carton a here only limits the horizontal position of carton a and does not clamp or press the carton a.

[0035] When the test is completed, the movable plate 2 can be driven downwards until the weight 6 touches the supporting plate 3. At this point, the electromagnet 5 can be de-energized, causing the weight 6 to fall onto the supporting plate 3. Then, the movable plate 2 can be driven upwards to reset, thus placing multiple weights 6. This state can be achieved by... Figure 1 This is used to represent the process. When testing is required, the movable plate 2 can be driven downwards until the electromagnet 5 touches the top of the weight 6, energizing the electromagnet 5 and attracting the weight 6. Then, the movable plate 2 is driven upwards. This state can be represented by... Figure 2 To illustrate, during subsequent tests, the load-bearing plate 3 is first moved upward a certain distance, then the carton a is placed on the placement plate 4, then the load-bearing plate 3 is moved downward to the top of the carton a, and finally the movable plate 2 is driven downward to place the corresponding number of weights 6.

[0036] To ensure the weight 6 is placed stably on the load-bearing plate 3, multiple receiving slots 14 can be provided on the top of the load-bearing plate 3. The size of the slot opening of the receiving slot 14 is adapted to the size of the weight 6. The multiple receiving slots 14 are respectively set one-to-one with the multiple weights 6. Each weight 6 and its corresponding receiving slot 14 are located on the same vertical line. That is, when the electromagnet 5 is de-energized, the weight 6 can fall directly into the receiving slot 14, achieving stable placement.

[0037] Meanwhile, in order to ensure that the electromagnet 5 can attract the weight 6 to the same position at the bottom of the movable plate 2 each time, this application provides a cylinder 7 fixedly installed at the bottom of the movable plate 2, and the cylinder 7 is located at the outer periphery of the electromagnet 5, so that when the weight 6 is magnetically attracted by the electromagnet 5, the weight 6 is arranged in an inserted state on the cylinder 7, and with the presence of the cylinder 7, it is ensured that the position of the weight 6 at the bottom of the movable plate 2 is always the same.

[0038] like Figures 6-8As shown, furthermore, when it is necessary to investigate the relationship between the pressing effect of different pressing areas on the top of the carton a when the number of weights 6 is the same, this application improves the load-bearing plate 3 to meet the above-mentioned investigation requirements. Specifically, this application also adds multiple inserts 8 with the same weight but different bottom areas. The bottom of the load-bearing plate 3 has a slot 9, and multiple inserts 8 can be selectively inserted into the slot 9 to realize the pressing effect of different pressing areas on the carton a under the same number of weights 6. It should be noted that since each type of insert 8 has the same weight, when it is inserted into the load-bearing plate 3, the weight of each insert 8 and the load-bearing plate 3 as a whole is the same.

[0039] To achieve the lifting and lowering of the movable plate 2 on the frame 1, a fixed pulley 10 can be installed on the frame 1 above the movable plate 2. A wire harness 11, with one end connected to the movable plate 2, is wound around the fixed pulley 10. Driving the wire harness 11 moves the movable plate 2, thus achieving the movement of the electromagnet 5 closer to or further away from the load-bearing plate 3. Of course, this application is not limited to the combination of the wire harness 11 and the fixed pulley 10 described above; conventional techniques in the prior art can also be used. To avoid unnecessary detail, these will not be elaborated upon here.

[0040] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A cardboard box testing device, characterized in that, The system includes a movable plate (2), a load-bearing plate (3), and a shelf (4) arranged from top to bottom on a frame (1). Both the movable plate (2) and the load-bearing plate (3) can move vertically. Multiple electromagnets (5) are evenly distributed at the bottom of the movable plate (2), and each electromagnet (5) has a weight (6) magnetically attracted to it. When the carton (a) is placed on the shelf (4) and pressed by the load-bearing plate (3), the movable plate (2) can move downward toward the load-bearing plate (3) to place the weight (6) on the load-bearing plate (3) or to pull back the weight (6) on the load-bearing plate (3). The shelf (4) is provided with a clamp, which includes two sets of clamping blocks (12) that are horizontally slidably installed on the shelf (4) and a rotating shaft (13) that is rotatably installed on the shelf (4). The rotating shaft (13) has two threaded sections with opposite directions of rotation. The bottom ends of the two clamping blocks (12) are respectively threaded onto the two threaded sections, and an adjustable limiting area is formed between the two clamping blocks (12).

2. The carton testing device according to claim 1, characterized in that, The bottom of the movable plate (2) is fixedly provided with a cylinder (7), and the cylinder (7) is located at the outer periphery of the electromagnet (5) so that when the weight (6) is magnetically attracted by the electromagnet (5), the weight (6) is arranged in an inserted state on the cylinder (7).

3. A carton testing device according to claim 1 or 2, characterized in that, The testing device also includes multiple insert plates (8) with the same weight but different bottom areas. The bottom of the load-bearing plate (3) has a slot (9), and one of the multiple insert plates (8) is inserted into the slot (9).

4. A carton testing device according to claim 1 or 2, characterized in that, A fixed pulley (10) is provided on the frame (1) above the movable plate (2), and a wire harness (11) with one end connected to the movable plate (2) is wound on the fixed pulley (10).

5. A carton testing device according to claim 1 or 2, characterized in that, The top of the load-bearing plate (3) is provided with multiple receiving slots (14) for receiving weights (6), and the multiple receiving slots (14) are respectively set to correspond one-to-one with the multiple weights (6).

6. A carton testing device according to claim 1 or 2, characterized in that, The frame (1) has a groove (15) on its side for the movable installation of the load-bearing plate (3) and the movable plate (2).

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