A clamping device for preventing material scattering and overflowing of a packaging machine

Abstract

This utility model discloses a clamping device for preventing spillage and overflow in a packaging machine, relating to the field of food packaging equipment technology. The utility model includes a pneumatic gripper mounted on a turntable and a suction cup mechanism for initially pulling open the packaging bag held by the pneumatic gripper. A fixed frame is fixedly installed on the top of the turntable on the filling position side. Two paddles are arranged on the fixed frame towards the outer edge of the turntable, which are used to pull the packaging bag open after being inserted into the inner opening of the bag. The two paddles are symmetrically arranged and move away from each other when pulling the opening of the packaging bag. This utility model fully utilizes the existing turntable, suction cup mechanism, gripper, and filling nozzle movements on the packaging machine. Through the rational design of auxiliary structures such as the fixed frame, paddles, and drive mechanism, and working in conjunction with existing mechanisms, it achieves the function of preventing spillage and overflow without changing the main structure of the packaging machine, demonstrating strong compatibility and practicality.

Description

Technical Field

[0001] This utility model relates to the field of food packaging equipment technology, specifically to a clamping device for preventing spillage and overflow in a packaging machine. Background Technology

[0002] In the food production sector, food packaging machines are highly sophisticated. Taking meat granule or chunk packaging machines as an example, the main components include a feeding, metering, filling execution, packaging forming and sealing system, as well as a control system and auxiliary structures. Among these, the filling nozzle is a key component, typically connected to the end of a guide chute, and its diameter can be changed according to the size of the meat granules and the specifications of the packaging bag. Some filling nozzles also integrate an air blowing function, blowing open the bag opening before filling, which, combined with the fixing action of pneumatic grippers, ensures that the meat granules fall accurately into the bag.

[0003] The aforementioned existing technologies are quite mature, but in actual use, because the packaging bags are plastic, simply blowing open the bag opening cannot completely guarantee that the bag opening will be completely open. Therefore, in practice, some meat or food will still spill out due to the bag opening, resulting in spillage. To address this problem, it is envisioned that if a force is set to pull open the bag opening during the filling process, combined with the fixation of pneumatic grippers, the spillage situation can be greatly reduced. Therefore, an auxiliary structure of a clamping device for preventing spillage in packaging machines has been designed and applied to existing packaging machines. Utility Model Content

[0004] The purpose of this invention is to provide a clamping device for preventing spillage in packaging machines by incorporating a force structure that pulls open the bag opening.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A clamping device for preventing spillage in a packaging machine includes a pneumatic gripper mounted on a turntable and a suction cup mechanism for initially pulling open the packaging bag held by the pneumatic gripper. A fixed frame is fixedly mounted on the top of the turntable on the filling position side. The fixed frame is mounted on the non-moving outer shell of the turntable. Two paddles are provided on the fixed frame towards the end of the outer edge of the turntable. They are used to pull the packaging bag open after being inserted into the inner opening of the packaging bag. The two paddles are symmetrically arranged and move away from each other when pulling the opening of the packaging bag.

[0007] Furthermore, a crossbar is fixed to the outer edge of the fixed frame at the end of the turntable. The horizontal position of the crossbar is higher than that of the pneumatic gripper. The middle part of the crossbar is fixed to the end of the fixed frame. A pair of inverted "V" shaped bent rods are fixed to the two ends of the crossbar. The bent rods are constructed with inverted "V" shaped guide grooves.

[0008] Furthermore, the lever is symmetrically fixed with sliding rods, and the two sliding rods are respectively placed on one side of the two guide grooves and can slide along one side. Each side of the guide groove is provided with a spring, which is in a compressed state, with one end fixed to the side wall of the guide groove and the other end fixed to the side wall of the sliding rod.

[0009] Furthermore, the two paddles are duckbill-shaped and have smooth surfaces when they are attached together.

[0010] Furthermore, a semi-circular bucket is fixed to the top of the paddle, and the two semi-circular buckets on the paddles combine to form a funnel shape and are located directly below the filling nozzle.

[0011] Furthermore, it also includes a drive mechanism that drives two disengaging blades away from each other. The drive mechanism includes a ring-shaped assembly around the outside of the packing nozzle. The end of the assembly is constructed to fit the frustum shape inside the semi-circular hopper. The assembly is fixed to the outer wall of the packing nozzle by bolts, so that when the packing nozzle moves down to fill, the frustum shape drives the two semi-circular hoppers to move the two disengaging blades away from each other.

[0012] Furthermore, the mounting bracket includes at least two mounting plates, one located at the edge of the turntable and the other near the center of the turntable, and the mounting plates are fixed to the turntable by bolts.

[0013] The beneficial effects of this utility model are as follows:

[0014] This utility model fully utilizes the existing turntable, suction cup mechanism, gripper, and filling nozzle movement on the packaging machine. Through the rational design of auxiliary structures such as fixing frame, paddle, and drive mechanism, it works in coordination with existing mechanisms to achieve the function of preventing spillage and overflow without changing the main structure of the packaging machine. It has strong compatibility and practicality.

[0015] This invention uses a sliding rod that works in conjunction with an inverted "V" shaped guide groove, with a spring installed inside the guide groove. This design allows the paddle to be driven open during filling and automatically reset after filling is completed, ensuring the continuity and stability of the device's operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the installation position of this utility model on a prior art packaging machine;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model in conjunction with the pneumatic gripper;

[0018] Figure 3 This is a schematic diagram of part of the structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the kit of this utility model;

[0020] Reference numerals: 1. Pneumatic gripper; 2. Suction cup mechanism; 3. Fixing frame; 4. Paddle; 5. Crossbar; 6. Bending rod; 7. Guide groove; 8. Sliding rod; 9. Spring; 10. Semi-arc bucket; 11. Drive mechanism; 12. Kit; 13. Frustum-shaped; 14. Fixing plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0022] This embodiment provides a clamping device for preventing spillage in a packaging machine. It is mainly used in existing packaging machines with a structure that forces the bag opening open, thereby reducing spillage. The following technical solution is provided in conjunction with... Figures 1-4 Please provide a detailed explanation:

[0023] A clamping device for preventing spillage in a packaging machine includes a pneumatic gripper 1 mounted on a turntable and a suction cup mechanism 2 for initially pulling open the packaging bag held by the pneumatic gripper 1. It should be noted that the pneumatic gripper 1, suction cup mechanism 2, and turntable are all existing structures in packaging machines. In other words, the improvement in this application is based on optimization of existing packaging machines. The electrical control and the coordination between other components follow the operating methods of existing packaging machines; that is, it is only an improvement and optimization based on existing technology. The specific improvement in this application is as follows: a fixing frame 3 is fixedly installed on the top of the turntable on the filling position side. The pneumatic gripper 1 is installed on the non-moving outer shell of the turntable, meaning it moves with the rotation of the turntable. The fixed frame 3 and suction cup mechanism 2 are installed on the non-moving part of the turntable, meaning they do not rotate with the turntable. Two paddles 4 are provided on the fixed frame 3 towards the outer edge of the turntable. These paddles are used to pull the packaging bag open after being inserted into the inner opening of the packaging bag. The two paddles 4 are symmetrically arranged and move away from each other when pulling the opening of the packaging bag. This application innovatively sets two paddles 4 on the fixed frame 3. During the filling process, the paddles 4 are driven to move away from each other and pull the packaging bag open. Compared with the simple air blowing method, this can more effectively ensure that the bag opening is open and greatly reduce the possibility of spillage.

[0024] Please see Figure 2This section details the working principle of the two pry bars 4 pulling the packaging bag open after they move away from each other. A crossbar 5 is fixed to the outer edge of the turntable from the fixed frame 3. The horizontal position of the crossbar 5 is higher than that of the pneumatic gripper 1. The middle of the crossbar 5 is fixed to the end of the fixed frame 3. A pair of inverted "V"-shaped bent rods 6 are fixed to the two ends of the crossbar 5. The bent rods 6 have inverted "V"-shaped guide grooves 7. This means that the entire structure will not affect the rotation path of the pneumatic gripper 1 driven by the turntable. Simultaneously, to ensure the pry bars 4 move away from each other... To achieve this, two sliding rods 8 are symmetrically fixed on the paddle 4. The two sliding rods 8 are respectively placed on one side of the two guide grooves 7 and can slide along one side. A spring 9 is provided inside each side of the guide groove 7. The spring 9 is in a compressed state, with one end fixed to the side wall of the guide groove 7 and the other end fixed to the side wall of the sliding rod 8. The elastic force of the spring 9 can ensure that the two sliding rods 8 are always at the top of the guide groove 7 without external force. That is to say, the two paddles 4 are in a close fit. At the same time, when the two paddles 4 are in a close fit, they are duckbill-shaped and have a smooth surface, thus avoiding scratching the packaging bag.

[0025] Specifically, such as Figures 2 to 4 As shown, this section details how to utilize the existing operating method of the packaging machine to drive two paddles 4 to open the opening of the packaging bag. A semi-circular bucket 10 is fixed to the top of each paddle 4. The two semi-circular buckets 10 on the paddles 4, when combined, form a funnel shape and are located directly below the filling nozzle. The system also includes a drive mechanism 11 that drives the two paddles to open and move away from each other. The drive mechanism 11 includes a sleeve 12 that loops around the outside of the filling nozzle. The end of the sleeve 12 is constructed to fit a frustum-shaped section 13 inside the semi-circular bucket 10. The sleeve 12 is fixed to the outer wall of the filling nozzle by bolts, allowing the filling nozzle to move downwards and fill the bag. During material feeding (existing packaging machines have a downward movement during filling), the two semi-circular buckets 10 are driven by the frustum-shaped 13, which in turn drives the two paddles 4 to move away from each other. This application makes full use of the existing turntable, suction cup mechanism 2, grippers, and filling nozzle movements on the packaging machine. Through the rational design of auxiliary structures such as the fixed frame 3, paddles 4, and drive mechanism 11, it works in coordination with the existing mechanisms. Without changing the main structure of the packaging machine, it achieves the function of preventing material spillage and overflow, and has strong compatibility and practicality. Specifically, the paddles 4 cooperate with the inverted "V" shaped guide groove 7 through the sliding rod 8, and the guide groove 7 is equipped with a spring 9. This design allows the paddles 4 to be driven to open during filling and to automatically reset after filling, ensuring the continuity and stability of the device's operation.

[0026] For details, please refer to Figure 1 and Figure 3The fixing frame 3 contains at least two fixing plates 14, one of which is located at the edge of the turntable and the other is near the center of the turntable. The fixing plates 14 are fixed to the turntable by bolts. This design allows the fixing frame 3 to be stably installed on the turntable, ensuring the positional accuracy of components such as the paddle 4 during operation, thereby reliably completing the insertion and pulling of the packaging bag.

[0027] The working process of this utility model:

[0028] In its initial state, the paddle 4 is fitted in a duckbill shape with a smooth surface, making it easy to insert into the opening of the packaging bag. When the filling nozzle moves downward (existing packaging machines have a downward movement during filling), the kit 12 moves downward accordingly. The frustum-shaped end 13 of the kit 12 pushes the semi-circular bucket 10. Since the semi-circular bucket 10 is fixed on the paddle 4, it drives the two paddles 4 to slide in the guide groove 7 via the sliding rod 8, thus moving them away from each other. This pulls the opening of the packaging bag open, providing sufficient space for the filling and ensuring that the material can fall accurately into the bag.

[0029] A compressed spring 9 is installed inside one side of the guide groove 7. One end of the spring 9 is fixed to the side wall of the guide groove 7, and the other end is fixed to the side wall of the sliding rod 8. When the filling is completed, the filling nozzle moves upward, the kit 12 leaves the semi-circular hopper 10, and the paddle 4 loses its outward pushing force. At this time, under the elastic force of the spring 9, the sliding rod 8 slides towards the end of the guide groove 7 near the middle of the crossbar 5, causing the paddle 4 to return to the contact state, ready for the next working cycle.

[0030] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A clamping device for preventing spillage in a packaging machine, comprising a pneumatic gripper (1) mounted on a turntable and a suction cup mechanism (2) for initially pulling open the packaging bag held by the pneumatic gripper (1), characterized in that, A fixed frame (3) is fixedly installed on the top of the turntable on the filling position side. The fixed frame (3) is installed on the non-moving outer shell of the turntable. Two paddles (4) are provided on the fixed frame (3) towards the end of the outer edge of the turntable. They are used to pull the packaging bag open after being inserted into the inner opening of the packaging bag. The two paddles (4) are symmetrically arranged and move away from each other when pulling the opening of the packaging bag.

2. The clamping device for preventing spillage and overflow in a packaging machine according to claim 1, characterized in that, The fixed frame (3) is fixed with a crossbar (5) at the outer edge of the turntable. The horizontal position of the crossbar (5) is higher than that of the pneumatic gripper (1). The middle part of the crossbar (5) is fixed to the end of the fixed frame (3). A pair of inverted "V" shaped bent rods (6) are fixed to the two ends of the crossbar (5). The bent rods (6) are constructed with inverted "V" shaped guide grooves (7).

3. The clamping device for preventing spillage and overflow in a packaging machine according to claim 1, characterized in that, The paddle (4) is symmetrically fixed with sliding rods (8). The two sliding rods (8) are respectively placed on one side of the two guide grooves (7) and can slide along one side. Each side of the guide groove (7) is provided with a spring (9). The spring (9) is in a compressed state, with one end fixed to the side wall of the guide groove (7) and the other end fixed to the side wall of the sliding rod (8).

4. The clamping device for preventing spillage and overflow in a packaging machine according to claim 1, characterized in that, When the two paddles (4) are put together, they are duckbill-shaped and have a smooth surface.

5. The clamping device for preventing spillage and overflow in a packaging machine according to claim 1, characterized in that, A semi-circular bucket (10) is fixed to the top of the paddle (4). The semi-circular buckets (10) on the two paddles (4) are combined to form a funnel shape and are located directly below the filling nozzle.

6. The clamping device for preventing spillage and overflow in a packaging machine according to claim 1, characterized in that, It also includes a drive mechanism (11) that drives two pushers to move away from each other. The drive mechanism (11) includes a sleeve (12) that surrounds the outside of the packing nozzle. The end of the sleeve (12) is constructed to fit the inside of the semi-circular bucket (10) in a frustum shape (13). The sleeve (12) is fixed to the outer wall of the packing nozzle by bolts so that when the packing nozzle moves down to fill, the frustum shape (13) drives the two semi-circular buckets (10) to move the two pushers (4) away from each other.

7. The clamping device for preventing spillage and overflow in a packaging machine according to claim 1, characterized in that, The mounting bracket (3) includes at least two mounting plates (14), one located at the edge of the turntable and the other near the center of the turntable, and the mounting plates (14) are fixed to the turntable by bolts.

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