Hand clamping prevention device of stretch film packaging machine

Abstract

The utility model provides a hand clamping prevention device of a stretch film packaging machine, and mainly relates to the technical field of food packaging equipment. A hand clamping preventing device of a stretch film packaging machine comprises two symmetrically-arranged supporting frames and a baffle movably installed behind the two supporting frames, a U-shaped blocking rod is jointly and rotationally installed outside the two supporting frames, the U-shaped blocking rod is in transmission connection with the baffle, and the baffle and the U-shaped blocking rod can ascend and descend synchronously. Compared with the prior art, the device has the advantages that through a linkage mechanism of the U-shaped stop lever and the baffle, the device can make a response quickly when the hands of an operator approach a dangerous area, the opening of the machine is sealed through descending of the baffle, the hands are effectively prevented from being pinched, and therefore the safety in the operation process is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to food packaging equipment technical field, concretely is a kind of stretch film packaging machine anti-pinch hand device. BACKGROUND

[0002] Stretch film packaging machine is a kind of automatic packaging equipment widely used in food, medicine, chemical industry and other industries. It is wrapped, fixed and sealed by stretch film to achieve the purpose of protecting goods and improving packaging efficiency and quality. However, during the use of stretch film packaging machine, due to the rapid operation and automatic operation of the machine, the hands of the operator are easy to misenter the working area of the machine, resulting in the occurrence of safety accidents such as hand clamping. In the prior art, the hands of the operator are detected by sensing technology to avoid the operator from misentering the feeding port or discharging port of the stretch film packaging machine, and when the hands of the operator are easy to misenter the working area of the machine, the machine is stopped for protection, which greatly affects the production efficiency. UTILITY MODEL CONTENTS

[0003] To solve the problems of the prior art, the utility model provides a stretch film packaging machine anti-pinch hand device, which realizes the following technical scheme:

[0004] A stretch film packaging machine anti-pinch hand device, comprising two symmetrically arranged support frames and a baffle movably mounted at the rear of the two support frames, a U-shaped baffle rod is rotatably mounted on the outside of the two support frames, the U-shaped baffle rod is in transmission connection with the baffle, and the baffle can be synchronously lifted and lowered with the U-shaped baffle rod.

[0005] The upper and lower parts of the inside of the two support frames are rotatably mounted with support rods, the two sides of the baffle are rotatably connected with the rear parts of the inside of the corresponding support rods, the support rods arranged on the inside of the two support frames are symmetrically arranged, and the support rods arranged on the inside of the same side of the support frames are parallel to each other, and the U-shaped baffle rod can drive the support rods arranged below to swing through the transmission assembly.

[0006] The transmission assembly comprises a first rotating shaft, the lower parts of the outside of the support rods are respectively fixedly mounted with first rotating shafts, the first rotating shafts are respectively rotatably connected with the bearings on the outside of the support frames, the two sides of the inner wall of the U-shaped baffle rod are fixedly mounted with second rotating shafts, the inner ends of the second rotating shafts are rotatably connected with the bearings on the outside of the support frames opposite to them, the second rotating shafts are arranged below the first rotating shafts, and the first rotating shafts and the second rotating shafts are respectively fixedly mounted with first gears and second gears, and the first gears and the second gears arranged on the same side are in meshing relationship.

[0007] The upper part of the outer side of the support frame is fixedly provided with a first connecting rod, and the rear part of the outer side of the support rod in the lower part is fixedly provided with a second connecting rod.

[0008] The bottom of the support frame is fixedly provided with a mounting plate, and the top surface of the mounting plate is provided with mounting holes in the four corners.

[0009] Compared with the prior art, the device has the advantages that:

[0010] 1. The device can quickly respond when the operator's hand approaches the dangerous area through the linkage mechanism of the U-shaped stop rod and the baffle. Once the U-shaped stop rod is pressed down, the baffle will immediately drop and seal the opening of the machine, effectively preventing the hand from being injured, thereby significantly improving the safety during operation.

[0011] 2. Compared with complex sensing technology, the device uses mechanical transmission and linkage mechanism, which is relatively simple in structure and easy to install and maintain. This reduces maintenance costs, reduces downtime due to equipment failure, and improves the reliability and stability of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 is a structural schematic diagram of the utility model;

[0013] Fig. 2 is a front view of the utility model;

[0014] Fig. 3 is a side view of the utility model.

[0015] Reference signs shown in the drawings: 1, support frame; 2, baffle; 3, U-shaped stop rod; 4, support rod; 5, mounting plate; 6, first rotating shaft; 7, second rotating shaft; 8, first gear; 9, second gear; 10, first connecting rod; 11, second connecting rod; 12, tension spring. DETAILED DESCRIPTION

[0016] The utility model is further described in combination with the drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and not to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the present application.

[0017] Embodiment: A hand clamping prevention device for a stretch film packaging machine

[0018] As Figs. 1-3 shown, a hand clamping prevention device for a stretch film packaging machine has the following specific structure:

[0019] Two symmetrical support frames 1 and a baffle 2 movably installed at the back of the two support frames 1, the outside of the two support frames 1 are jointly rotatably installed with a U-shaped stop rod 3, the U-shaped stop rod 3 is in transmission connection with the baffle 2, and the baffle 2 can be synchronously lifted and lowered with the U-shaped stop rod 3.

[0020] The working principle and advantages are as follows: The device is specially designed for the safe operation of the stretch film packaging machine, and is installed at the discharge port or the feeding port of the stretch film packaging machine. When the device is installed in place, the baffle 2 is accurately aligned with the opening of the packaging machine, forming a safety barrier. During the operation process, if the worker accidentally stretches his hand into the dangerous area, he will first touch the U-shaped stop rod 3, causing the U-shaped stop rod 3 to be pressed down. The downward movement of the U-shaped stop rod 3 is rapidly transmitted to the baffle 2 through the transmission mechanism, causing the baffle 2 to rapidly descend and seal the opening, effectively preventing the hand from being pinched. When maintenance or repair is needed, simply lifting the U-shaped stop rod 3 can remove the blockage of the baffle 2, making the operation simple and quick. This design not only significantly improves the safety of the operation, but also takes into account the convenience of daily operation.

[0021] The upper and lower parts of the inner sides of the two support frames 1 are rotatably installed with support rods 4, the two sides of the baffle 2 are rotatably connected with the inner sides of the corresponding support rods 4, the support rods 4 oppositely arranged on the inner sides of the two support frames 1 are mutually symmetrical, the support rods 4 on the inner sides of the support frames 1 on the same side are mutually parallel, and the two support rods 4 in the support frames 1 on the same side and the support frames 1 and the baffle 2 form a parallelogram structure, and the U-shaped stop rod 3 can drive the support rods 4 below to swing through the transmission assembly.

[0022] The design of the parallelogram structure of the support frame 4 ensures the stability of the baffle 2 during lifting, and can remain stable even under external force, avoiding shaking. When the U-shaped stop rod 3 is triggered, the lower support rod 4 is driven to swing through the transmission assembly, and the baffle 2 is stably lowered, forming an effective protective barrier. This structure not only enhances the stability of the device, but also ensures the rapid response and accuracy of the protective action.

[0023] The transmission assembly includes first shafts 6, the lower parts of the outer sides of the support rods 4 are fixedly installed with the first shafts 6, the first shafts 6 all penetrate through the support frames 1 symmetrical to the outer ends thereof and are connected with the bearings thereof, the inner walls of the U-shaped stop rods 3 are fixedly installed with second shafts 7 on both sides, the inner ends of the second shafts 7 are all connected with the bearings on the outer sides of the support frames 1 opposite thereto, the second shafts 7 are all located below the first shafts 6, and the first shafts 6 and the second shafts 7 are respectively fixedly installed with first gears 8 and second gears 9 on the same side, and the first gears 8 and the second gears 9 on the same side are in meshing with each other.

[0024] Through the meshing of the first gear 8 and the second gear 9, linkage between the U-shaped baffle rod 3 and the support rod 4 is realized. When the U-shaped baffle rod 3 rotates, the second rotating shaft 7 thereon drives the second gear 9 to rotate, thereby driving the first gear 8 and the first rotating shaft 6 and the support rod 4 connected therewith to swing. This gear transmission mode ensures the accuracy and reliability of transmission, and can maintain good performance even under frequent operation.

[0025] A first connecting rod 10 is fixedly installed on the upper part of the outer side of the support frame 1, a second connecting rod 11 is fixedly installed on the rear part of the outer side of the lower support rod 4, the first connecting rod 10 and the second connecting rod 11 on the same side are connected through a tension spring 12 respectively, and the two ends of the tension spring 12 are fixedly connected with the corresponding first connecting rod 10 and second connecting rod 11 respectively. The tension spring 12 provides an upward tension force to the lower support rod 4.

[0026] The setting of the tension spring 12 provides a continuous upward restoring force for the baffle 2. When the U-shaped baffle rod 3 is not triggered, the tension spring 12 keeps the support rod 4 and the baffle 2 in the initial position, i.e. the open state, through the first connecting rod 10 and the second connecting rod 11. In this way, without any operation, the opening of the packaging machine remains unobstructed, facilitating the normal entry and exit of materials. Once the U-shaped baffle rod 3 is pressed down, the tension spring 12 is stretched, and when the external force disappears, the tension spring 12 quickly returns to its original shape, driving the baffle 2 to reset, ensuring the rapid response and high efficiency of the device.

[0027] The bottom of the support frame 1 is fixedly installed with a mounting plate 5, and mounting holes are formed in the top surface of the mounting plate 5.

[0028] The design of the mounting plate 5 and the mounting holes thereon enables the entire anti-pinch hand device to be conveniently fixed at a proper position of the stretch film packaging machine. By passing a bolt or other fastener through the mounting holes, the device can be firmly installed on the machine, ensuring its stability and safety during operation. This standardized mounting method simplifies the installation process, improves work efficiency, and also facilitates subsequent maintenance and replacement.

[0029] In the interpretation of the present utility model, it needs to be explained that the terms indicating the direction are only for the convenience of description and understanding, and are not the only limitation on the installation position of the specific technical features, and other installation methods that can be realized are not excluded.

[0030] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the present application, but not limited to; although the present application is described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still be modified to the technical solutions recorded in the foregoing examples, or part of the technical features are replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A finger-pinching prevention device for a stretch film packaging machine, comprising two symmetrically arranged support frames (1) and a baffle (2) movably mounted behind the two support frames (1), characterized in that: A U-shaped shift rod (3) is mounted on the outside of the two support frames (1) for co-rotation. The U-shaped shift rod (3) is in transmission connection with the baffle (2), and the baffle (2) can be raised and lowered synchronously with the U-shaped shift rod (3).

2. The anti-pinch device for a stretch film packaging machine according to claim 1, characterized in that: The upper and lower parts of the inner sides of the two support frames (1) are both rotatably mounted with support rods (4), and both sides of the baffle (2) are rotatably connected to the rear parts of the inner sides of the corresponding support rods (4). The support rods (4) located on the inner sides of the two support frames (1) are symmetrical to each other, and the support rods (4) located on the inner sides of the support frames (1) on the same side are parallel to each other. The U-shaped gear lever (3) can drive the support rod (4) located below to swing through the transmission assembly.

3. The anti-pinch device for a stretch film packaging machine according to claim 2, characterized in that: The transmission assembly includes a first rotating shaft (6), and the lower part of the outer side of the support rod (4) is fixedly installed with the first rotating shaft (6), and the first rotating shaft (6) passes through the support frame (1) symmetrical with its outer end and is connected to its bearing. The two sides of the inner wall of the U-shaped gear lever (3) are fixedly installed with a second rotating shaft (7), and the inner end of the second rotating shaft (7) is connected to the outer side bearing of the support frame (1) opposite to it. The second rotating shaft (7) is located below the first rotating shaft (6), and the first gear (8) and the second gear (9) are fixedly installed on the first rotating shaft (6) and the second rotating shaft (7), respectively, and the first gear (8) and the second gear (9) located on the same side are meshed with each other.

4. The anti-pinch device for a stretch film packaging machine according to claim 3, characterized in that: A first connecting rod (10) is fixedly mounted on the upper portion of the outer side of the support frame (1), and a second connecting rod (11) is fixedly mounted on the rear portion of the outer side of the support rod (4) located below. The first connecting rod (10) and the second connecting rod (11) located on the same side are respectively connected via tension springs (12).

5. The anti-pinch device for a stretch film packaging machine according to claim 1, characterized in that: A mounting plate (5) is fixedly mounted on the bottom of each support frame (1), and mounting holes are provided at the four corners of the top surface of each mounting plate (5).

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