Cutting structure of vacuum packaging machine

Abstract

The utility model relates to a vacuum packaging machine cutting structure which comprises a cutting frame, a height-adjustable moving plate is arranged in the cutting frame, connecting rods are arranged at the two ends of the moving plate in a penetrating mode and slidably connected with the two ends of the moving plate, limiting plates are fixedly connected to the upper ends of the connecting rods, and connecting plates are fixedly connected to the lower ends of the connecting rods. The lower end of each connecting plate is fixedly provided with two telescopic rods, the lower ends of the telescopic rods on the same side are fixedly connected with pressing plates, springs are wound around the outer walls of the telescopic rods, and the connecting plates are elastically connected with the pressing plates through the springs. After the air cylinder is started to enable the moving plate to move, after the pressing plate fixes the position of the packaging bag, the moving plate continues to move downwards, the connecting rod moves upwards, at the moment, the cutting knife is located at the cutting position to cut the packaging bag, the motor is started to enable the gear to rotate, and therefore the two racks move in the opposite directions, and the cutting parts are away from each other to cut the packaging bag.

Description

Technical Field

[0001] The present application relates to the technical field of vacuum packaging machines, and in particular to a cutting structure of a vacuum packaging machine. Background Art

[0002] A vacuum packaging machine is a device used to package food or other items into a vacuum state. It creates a low-pressure environment by extracting the air from the packaging bag, thereby extending the shelf life of the food and preventing oxidation, mold and bacterial growth. Vacuum packaging machines are usually used to package perishable foods such as meat, dairy products, nuts, vegetables, and can also be used to package some non-food items such as electronic products and medical devices. After the vacuum packaging machine seals multiple packaging bags, it is necessary to cut the sealed area so that the multiple sealed items are separated into independent individuals.

[0003] In the actual production process, a single cutting knife is used to cut the cutting part. In this cutting method, since the knife head is in contact with the packaging bag, the packaging bag will slide sideways during cutting, which will cause inaccurate cutting and may cause air leakage in the vacuum-packed items, affecting the quality of the finished product. Therefore, in order to solve the above problems, the present application provides a cutting structure for a vacuum packaging machine.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problem that packaging bags may slide sideways during cutting, resulting in inaccurate cutting, the present application provides a cutting structure for a vacuum packaging machine.

[0006] The present application provides a cutting structure for a vacuum packaging machine, including a cutting frame, wherein a height-adjustable movable plate is arranged inside the cutting frame, connecting rods are arranged through both ends of the movable plate and are slidably connected, the upper ends of the connecting rods are fixedly connected to limit plates, the lower ends of the connecting rods are fixedly connected to connecting plates, two telescopic rods are fixedly arranged at the lower ends of the connecting plates, the lower ends of the telescopic rods on the same side are fixedly connected to pressure plates, springs are wound around the outer walls of the telescopic rods, and the connecting plates are elastically connected to the pressure plates through the springs.

[0007] Preferably, the lower wall of the movable plate is slidably connected to two oppositely arranged racks, and cutting knives are arranged under the racks. The cutting knives are fixedly connected to the racks through connecting blocks.

[0008] Preferably, the lower ends of the cutting knives are located between the two pressing plates, and the two cutting knives are arranged opposite to each other and the cutting parts of the lower ends are in contact with each other.

[0009] Preferably, the movable plate is provided through and rotatably connected with a rotating rod, a gear is coaxially fixedly connected with the lower wall of the rotating rod, and a motor for driving the rotating rod to rotate is fixedly provided on the upper wall of the movable plate.

[0010] Preferably, the gear is located between the two racks, and the gear is meshed with both racks.

[0011] Preferably, two cylinders are fixedly connected to the inner upper wall of the cutting frame, and the lower ends of the cylinders are fixedly connected to the movable plate.

[0012] Preferably, a cutting groove for cutting is provided on the inner lower wall of the cutting frame.

[0013] Preferably, a signal light is fixedly provided on the upper wall of the cutting frame, and the irradiation position of the signal light and the contact position of the two cutting knives are located in the same vertical plane.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] By placing the packaging bag on the lower wall inside the cutting frame, the cutting position corresponds to the irradiation position of the indicator light, the cylinder is started to move the movable plate, and after the pressure plate fixes the position of the packaging bag, the movable plate continues to move downward, and the connecting rod moves upward. At this time, the cutting knife is at the cutting position to cut the packaging bag, and the motor is started to rotate the gear, so that the two racks move toward each other, and the cutting parts move away from each other to cut the packaging bag. Compared with the traditional device, the possibility of sliding of the packaging bag during the cutting process is reduced, and the quality of the finished product is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure from a first viewing angle in the first embodiment of the present application;

[0017] Figure 2 It is a side view of the overall structure in the first embodiment of the present application;

[0018] Figure 3 It is a schematic diagram of the overall structure of the second viewing angle in Example 1 of the present application.

[0019] Explanation of the accompanying reference numerals: 1. cutting frame; 2. cutting groove; 3. cylinder; 4. moving plate; 5. connecting rod; 6. limiting plate; 7. connecting plate; 8. telescopic rod; 9. spring; 10. pressure plate; 11. motor; 12. rotating rod; 13. gear; 14. rack; 15. connecting block; 16. cutting knife; 17. indicator light. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-3 This application is described in further detail.

[0021] Embodiment 1

[0022] Reference Figure 1-3 A cutting structure of a vacuum packaging machine includes a cutting frame 1, wherein a cutting groove 2 for cutting is arranged on the lower wall of the cutting frame 1. A height-adjustable movable plate 4 is arranged inside the cutting frame 1, and two cylinders 3 are fixedly connected to the upper wall of the cutting frame 1, and the lower ends of the cylinders 3 are fixedly connected to the movable plate 4.

[0023] Connecting rods 5 are provided at both ends of the movable plate 4 and are slidably connected thereto. The upper ends of the connecting rods 5 are fixedly connected to the limiting plates 6. The lower ends of the connecting rods 5 are fixedly connected to the connecting plates 7. Two telescopic rods 8 are fixedly provided at the lower ends of the connecting plates 7. The lower ends of the telescopic rods 8 on the same side are fixedly connected to the pressing plates 10. Springs 9 are wound around the outer walls of the telescopic rods 8. The connecting plates 7 are elastically connected to the pressing plates 10 through the springs 9.

[0024] The lower wall of the moving plate 4 is slidably connected with two oppositely arranged racks 14, and the racks 14 slide through the slide grooves and the balls, which is a mature prior art. The moving direction of the racks 14 is the cutting direction of the packaging bag. A cutting knife 16 is arranged below the racks 14, and the cutting knife 16 is fixedly connected to the racks 14 through the connecting blocks 15. The lower ends of the cutting knives 16 are located between the two pressing plates 10, and the two cutting knives 16 are arranged opposite to each other and the cutting parts of the lower ends are in contact with each other.

[0025] The moving plate 4 is provided with a rotating rod 12 through and rotatably connected thereto, a gear 13 is coaxially fixedly connected to the lower wall of the rotating rod 12, and a motor 11 is fixedly provided on the upper wall of the moving plate 4 to drive the rotating rod 12 to rotate, and the motor 11 is a servo motor. The gear 13 is located between two racks 14, and the gear 13 is meshed with both racks 14.

[0026] A signal light 17 is fixedly provided on the upper wall of the cutting frame 1. The illumination position of the signal light 17 and the fitting position of the two cutting knives 16 are located in the same vertical plane. The packaging bag can be placed according to the illumination position of the signal light 17 to ensure that the cutting point of the cutting knife 16 is the position where the packaging bag needs to be cut.

[0027] During actual use, the packaging bag is first placed on the lower wall inside the cutting frame 1, the cutting position corresponds to the irradiation position of the indicator light 17, the cylinder 3 is started to move the movable plate 4, and the pressing plate 10 moves downward to fix the position of the packaging bag (the soft packaging bag can be flattened until the pressing plate 10 fixes it, and the hard packaging bag does not need to be operated), the movable plate 4 continues to move downward, and the connecting rod 5 moves upward. At this time, the cutting knife 16 is in the cutting position to cut the packaging bag, and the motor 11 is started to rotate the rotating rod 12, so that the gear 13 rotates, and the two racks 14 arranged on both sides and meshing with it move toward each other, and the cutting parts of the cutting knife 16 move away from each other to cut the packaging bag. After cutting, the cylinder 3 is started and the packaging bag is taken out, and the motor 11 rotates to return each component to the initial position, and then the next cutting is performed.

[0028] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0029] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0031] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cutting structure for a vacuum packaging machine, comprising a cutting frame (1), characterized in that: A height-adjustable movable plate (4) is arranged inside the cutting frame (1), and connecting rods (5) are arranged through both ends of the movable plate (4) and are slidably connected. The upper ends of the connecting rods (5) are fixedly connected to the limit plates (6), and the lower ends of the connecting rods (5) are fixedly connected to the connecting plates (7). Two telescopic rods (8) are fixedly arranged at the lower ends of the connecting plates (7), and the lower ends of the telescopic rods (8) on the same side are fixedly connected to the pressing plates (10). The outer walls of the telescopic rods (8) are wound with springs (9), and the connecting plates (7) are elastically connected to the pressing plates (10) through the springs (9).

2. The cutting structure of a vacuum packaging machine according to claim 1, characterized in that: The lower wall of the movable plate (4) is slidably connected to two oppositely arranged racks (14), and a cutting knife (16) is arranged below the racks (14). The cutting knife (16) is fixedly connected to the racks (14) through a connecting block (15).

3. The cutting structure of a vacuum packaging machine according to claim 2, characterized in that: The lower ends of the cutting knives (16) are located between the two pressing plates (10), and the two cutting knives (16) are arranged opposite to each other and the cutting parts at the lower ends are in contact with each other.

4. The cutting structure of a vacuum packaging machine according to claim 2, characterized in that: The movable plate (4) is provided with a rotating rod (12) through it and is rotatably connected thereto; a gear (13) is coaxially fixedly connected to the lower wall of the rotating rod (12); and a motor (11) for driving the rotating rod (12) to rotate is fixedly provided on the upper wall of the movable plate (4).

5. The cutting structure of a vacuum packaging machine according to claim 4, characterized in that: The gear (13) is located between the two racks (14), and the gear (13) is meshed with both racks (14).

6. The cutting structure of a vacuum packaging machine according to claim 1, characterized in that: Two cylinders (3) are fixedly connected to the inner upper wall of the cutting frame (1), and the lower ends of the cylinders (3) are fixedly connected to the movable plate (4).

7. The cutting structure of a vacuum packaging machine according to claim 1, characterized in that: The inner lower wall of the cutting frame (1) is provided with a cutting groove (2) for cutting.

8. The cutting structure of a vacuum packaging machine according to claim 2, characterized in that: A signal light (17) is fixedly arranged on the upper wall of the cutting frame (1), and the irradiation position of the signal light (17) and the contact position of the two cutting knives (16) are located in the same vertical plane.

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