Rapid packaging equipment for environment-friendly building materials

Through the compact chain drive and screw drive structure, combined with the lifting motor and the rotating motor, the mechanical structure of the tray-type stretch film packaging machine is simplified, the problems of complexity and maintenance difficulty of existing equipment are solved, and efficient and stable packaging of building materials is achieved.

CN223443974UActive Publication Date: 2025-10-17ANHUI BOHENG CONSTRUCTION ENGINEERING CO LTD
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Patent Information

Application Number
CN202422576001.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-24
Publication Date
2025-10-17
Estimated Expiration
2034-10-24

AI Technical Summary

Technical Problem

The existing tray-type stretch film packaging machine has a complex structure, resulting in high manufacturing costs, difficult maintenance and many potential failure points.

Method used

The compact chain drive and screw drive structure is combined with the lifting motor and the rotating motor to achieve automation and stability of the packaging process, simplify the mechanical structure, and reduce the complexity and maintenance difficulty of the equipment.

Benefits of technology

It improves packaging efficiency, reduces maintenance costs and time, ensures the stability and safety of the packaging process, and adapts to the packaging needs of building materials of different sizes and shapes.

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Abstract

The utility model relates to the technical field of packaging equipment, in particular to rapid packaging equipment for environment-friendly building materials. According to the technical scheme, a first carrier roller and a second carrier roller are rotationally installed on a rotating disc through a first support and a second support, a film winding frame is slidably installed on one side of the rotating disc through a lifting frame, the first carrier roller is composed of a rotating shaft and a roller sleeve, a brake block is arranged at one end of the rotating shaft, and a locking module is arranged on one side of the first support; the locking module is provided with channel steel and a connecting rod, the connecting rod is provided with a limiting rod, a through hole is formed in the channel steel in a penetrating mode, the connecting rod penetrates through the channel steel to do telescopic motion, a locking block is arranged at the end, located in the channel steel, of the connecting rod, and the position and the size of the locking block are matched with those of the brake block. The locking block is automatically pushed to be in contact with the brake block through the elastic force of the spring, so that the first carrier roller is locked. Due to the fact that the structure is simple, when the locking mechanism breaks down, corresponding parts can be conveniently detached and replaced.
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Description

TECHNICAL FIELD

[0001] The utility model relates to packing equipment technical field, concretely relates to a kind of environment-friendly building material rapid packing equipment. BACKGROUND

[0002] Film packing machine is common packing equipment, it is used in the packaging of product outside film, and the types of film packing machine are many, and common horizontal winding packing machine, trayless winding packing machine and tray winding packing machine, tray winding packing machine is the equipment that refers to through rotating table rotation drives tray goods rotation, and then realizes to goods winding and wrapping, and the product packaged by tray winding packing machine is generally heavier, when being sent to tray, it is very laborious.

[0003] Through searching, patent publication No. CN201620617323. X discloses a tray type winding film packaging machine, although the device can avoid the product from sliding on the roller during packaging when in use by setting a rotating disc roller assembly on the rotating disc of the tray type winding film packaging machine, and setting a feeding guide rail on one side of the rotating assembly, after the product is placed, the adjusting rod assembly can lift the supporting cover to lift the product and avoid the product from sliding on the roller, but the adjusting rod assembly structure for lifting the product is relatively complex when the device is in use. Complex structure means that more materials and more delicate processing technology are needed, which will increase the manufacturing cost of the equipment. And the equipment with complex structure is usually more difficult to maintain and troubleshoot daily. Complex mechanical structure may contain more connection points and potential failure points, which requires higher maintenance skills and longer maintenance time. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a kind of environment-friendly building material rapid packing equipment, solves the problems raised in background art.

[0005] The technical problem of the utility model is solved by the following solutions:

[0006] A kind of environment-friendly building material rapid packing equipment, including rotating disc, the upper surface of the rotating disc is installed with first support and second support, first supporting roller and second supporting roller are rotatably installed on the rotating disc by first support and second support;

[0007] Lifting frame is installed on one side of the rotating disc, film winding frame is slidably installed on the lifting frame, packaging film is fixed on the film winding frame, the first supporting roller is composed of rotating shaft and roller sleeve, brake block is arranged at one end of the rotating shaft, transmission wheel is arranged at the end of the rotating shaft close to the roller sleeve, locking module is arranged on one side of the first support;

[0008] The locking module is provided with a channel steel and a connecting rod, the connecting rod is provided with a limiting rod, a through hole is formed through the channel steel, the connecting rod is in extension and retraction movement through the limiting rod and the through hole, one end of the connecting rod in the channel steel is provided with a locking block, and the position and size of the locking block are matched with the brake block.

[0009] Based on the above technical scheme, the utility model further can make improvement as follows.

[0010] Further, a conveying motor is arranged below the first supporting roller on the rotating disc, and the conveying motor is in transmission connection with the transmission wheel of the first supporting roller through a chain.

[0011] The beneficial effects of the above further scheme are:

[0012] The conveying motor is directly arranged below the first supporting roller and connected with the first supporting roller through a chain, so that additional transmission mechanisms and space occupation are reduced. This compact layout helps to save equipment space, making the whole packaging equipment more compact and flexible, and adapting to different working environments. The chain transmission has the characteristics of high transmission efficiency and accurate transmission ratio, which can ensure that the power output by the conveying motor is efficiently transmitted to the first supporting roller. This means that the first supporting roller can stably rotate during the packaging process, thereby driving the building material to move smoothly and ensuring uniform winding of the packaging film. The chain transmission structure is relatively simple and easy to maintain and replace. When the chain is worn or fails, it can be easily disassembled and replaced with a new chain, reducing maintenance costs and time.

[0013] Further, a screw rod is rotatably installed inside the lifting frame, and a lifting motor is installed on one side of the lifting frame, and the screw rod is in transmission connection with the lifting motor.

[0014] The beneficial effects of the above further scheme are:

[0015] The screw rod transmission has the characteristics of good stability and smooth lifting. Since the screw rod is directly in transmission connection with the lifting motor, the lifting frame can maintain a stable motion trajectory during lifting, avoiding shaking or shaking phenomena. This stability is crucial for the packaging process, which can ensure that the packaging film can be uniformly and tightly wound on the building material, improving the packaging quality. The screw rod transmission has the characteristic of accurate transmission ratio, so the lifting frame can realize accurate positioning during lifting. By controlling the speed and direction of the lifting motor, the height and position of the lifting frame can be accurately adjusted, thereby meeting the packaging needs of building materials of different sizes and shapes.

[0016] Further, a sliding block is threadedly engaged on the screw rod, and the film winding frame is fixed on the sliding block, and the film winding frame is lifted on the screw rod of the lifting frame through the sliding block.

[0017] The beneficial effects of the above further scheme are:

[0018] Due to the threaded engagement between the lead screw and the sliding block, when the lead screw rotates, the sliding block can move up and down along the lead screw accurately. This design allows the lifting height of the film winding frame to be controlled very accurately, ensuring that the packaging film can be uniformly wound on the building materials, improving the packaging quality. The lead screw transmission structure itself has high carrying capacity and can withstand large loads. Therefore, when the packaging film and building materials are fixed on the film winding frame, the lead screw and sliding block can still work stably, ensuring the smooth progress of the packaging process. The lead screw transmission structure is relatively simple, easy to disassemble and clean. When the film winding frame or sliding block fails, it can be easily repaired or replaced, reducing maintenance costs and time. At the same time, due to the high reliability of the lead screw transmission, the failure rate is relatively low, reducing downtime.

[0019] Further, the side of the lifting motor away from the lifting frame is provided with a rotating motor, the rotating disc is supported on the ground through a pulley, and the lower surface of the rotating disc is provided with a gear, the rotating motor is in transmission connection with the gear of the rotating disc through a chain, and the rotating disc is driven to rotate by the rotating motor.

[0020] The beneficial effects of the above further scheme are:

[0021] The rotating motor is in transmission connection with the gear of the rotating disc through a chain, and this mechanical transmission mode has the characteristics of high transmission efficiency and accurate transmission ratio. Efficient transmission can ensure that the power output by the rotating motor is efficiently transmitted to the rotating disc, so that the rotating disc can rotate stably and quickly, thereby improving the packaging efficiency. The rotating disc is supported on the ground through a pulley, and this design allows the rotating disc to maintain a stable motion trajectory during rotation. Stable structure helps to reduce vibration and shaking of the rotating disc during rotation, ensuring the stability and continuity of the packaging process. The gear transmission structure itself has high carrying capacity and can withstand large loads. Therefore, when the building materials are placed on the rotating disc, the rotating motor can still stably drive the rotating disc to rotate, ensuring the smooth progress of the packaging process.

[0022] Further, the locking block and the channel steel are provided with a spring, the locking block is in contact with the brake block by the elastic force of the spring, and the first supporting roller is locked.

[0023] The beneficial effects of the above further scheme are:

[0024] The spring force can automatically push the locking block into contact with the brake block, achieving the locking of the first roller. The spring force ensures a tight contact between the locking block and the brake block, effectively locking the first roller. This reliable locking function prevents the building materials from shifting or falling due to the rotation of the roller during packaging, improving the stability and safety of the packaging. This design uses a simple mechanical structure, including locking blocks, brake blocks, springs, and channel steels. This simple structure makes the equipment easy to manufacture, install, and maintain, reducing manufacturing and usage costs.

[0025] Further, the outer surface of the channel steel is provided with a limiting groove, and the limiting groove is perpendicular to the through hole. When the limiting rod of the connecting rod is located outside the channel steel, it is limited by the limiting groove.

[0026] The beneficial effects of the above further scheme are:

[0027] The limiting groove and the limiting rod of the connecting rod cooperate to effectively limit the movement of the connecting rod in a specific direction, thereby enhancing the stability of the entire structure. Through precise limiting groove design, the limiting rod of the connecting rod can be accurately positioned at the predetermined position when inserted or removed. This high-precision cooperation helps improve the reliability and performance of the equipment and reduces faults or errors caused by inaccurate positioning.

[0028] The utility model provides a kind of environmental protection building material rapid packaging equipment. With following beneficial effects:

[0029] The equipment realizes the automation of packaging process through lifting motor, rotating motor and conveying motor and other automatic components. This greatly improves production efficiency, reduces the tediousness and error of manual operation, and also reduces the labor intensity of workers.

[0030] The design of lifting frame and film winding frame allows the packaging film to be flexibly adjusted in height and position as needed, thereby adapting to the packaging needs of building materials of different sizes and shapes. This flexibility enables the equipment to be widely used in the packaging of various building materials.

[0031] The design of the locking module ensures that the first roller can be securely locked when needed, thereby avoiding material slipping or damage due to roller rotation during packaging. At the same time, the cooperation of the brake block and the locking block also increases the safety of the equipment.

[0032] By adjusting the rotational speed of the conveying motor and the rotating motor and the height of the lifting frame, the equipment can adapt to the packaging needs of building materials of different sizes, shapes and weights. This adaptability makes the equipment have a wider application prospect, and each component of the equipment is designed to be relatively independent and easy to disassemble, which makes the daily maintenance and troubleshooting of the equipment more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0033] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0034] In the drawings:

[0035] Figure 1 is a front appearance schematic view of the present application;

[0036] Figure 2 is a side appearance schematic view of the present application;

[0037] Figure 3 is a schematic view of the locking module appearance of the present application;

[0038] Figure 4 is a schematic view of the first roller structure of the present application.

[0039] In the drawings, the components represented by each reference numeral are listed as follows:

[0040] 1, lifting frame; 11, rotating motor; 12, lifting motor; 2, film winding frame; 3, packaging film; 4, first roller; 401, roller sleeve; 402, transmission wheel; 403, brake block; 404, rotating shaft; 5, second roller; 6, first support; 7, locking module; 701, channel steel; 702, through hole; 703, connecting rod; 704, spring; 705, locking block; 706, limiting rod; 8, conveying motor; 9, rotating disc; 10, second support; 101, screw rod; 102, sliding block. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0042] Please refer to Figures 1 to 4 The embodiments provided by the present application:

[0043] Embodiment one

[0044] The utility model provides a kind of environmental protection building material fast packaging equipment, including carousel 9, the upper surface of carousel 9 is equipped with first support 6 and second support 10, carousel 9 is rotatably installed with first roller 4 and second roller 5 by first support 6 and second support 10, one side of carousel 9 is equipped with lifting frame 1, the inside rotation of lifting frame 1 is equipped with screw rod 101, one side of lifting frame 1 is equipped with lifting motor 12, screw rod 101 is connected with lifting motor 12, and screw rod 101 is known for its outstanding stability and lifting stability.Screw rod 101 and lifting motor 12 are directly connected, and lifting frame 1 can keep accurate trajectory during lifting, effectively avoiding shaking or shaking phenomenon.This feature is crucial in the packaging process, which can ensure that the packaging film 3 is evenly and tightly wrapped on the building material, thereby significantly improving the packaging quality.Screw rod 101 is known for its accurate transmission ratio, so that lifting frame 1 can realize accurate positioning during lifting operation.By accurately controlling the speed and direction of lifting motor 12, the height and position of lifting frame 1 can be accurately adjusted to meet the packaging needs of building materials of different sizes and shapes.Lifting frame 1 is slidably installed on screw rod 101, and the screw rod 101 is threadedly engaged with the sliding block 102, and the winding frame 2 is fixed on the sliding block 102.The winding frame 2 is lifted on the screw rod 101 of the lifting frame 1 by the sliding block 102.The threaded engagement between the sliding block 102 and the screw rod 101 ensures that the sliding block 102 can move up and down along the screw rod 101 when the screw rod 101 rotates.This design ensures that the lifting height of the winding frame 2 can be accurately controlled, so that the packaging film 3 can be evenly and accurately wrapped on the building material, further improving the packaging quality.The screw rod 101 transmission structure has high carrying capacity and can withstand large loads.Therefore, when the packaging film 3 and the building material are fixed on the winding frame 2, the screw rod 101 and the sliding block 102 can still maintain stable working state, ensuring the smooth progress of the packaging process.The screw rod 101 transmission mechanism is simple in structure, easy to disassemble and clean.When the winding frame 2 or the sliding block 102 fails, it can be quickly repaired or replaced, effectively controlling maintenance cost and downtime.At the same time, the high reliability of screw rod 101 transmission also reduces the failure rate and downtime, and the packaging film 3 is fixed on the winding frame 2, and the lifting motor 12 is provided with rotating motor 11 away from lifting frame 1, carousel 9 is rotatably supported on the ground by pulley, and the lower surface of carousel 9 is provided with gear, rotating motor 11 is connected with the gear of carousel 9 through chain transmission, carousel 9 is driven to rotate by rotating motor 11, and rotating motor 11 is connected with the gear of carousel 9 through precise chain transmission mechanism, which is known for its high transmission efficiency and accurate transmission ratio.The rotating disc 9 is supported on the ground by pulleys, which allows it to maintain a stable motion trajectory during rotation. The stable structure effectively reduces vibration and shaking during rotation, ensuring the stability and continuity of the packaging process. The gear transmission structure itself has high carrying capacity and can withstand large loads. Therefore, when the rotating disc 9 is placed with building materials, the rotating motor 11 can still stably drive the rotating disc 9 to rotate, ensuring the smooth progress of the packaging process. The first roller 4 is composed of a rotating shaft 404 and a roller sleeve 401. The rotating shaft 404 is provided with a brake block 403 at one end, and a transmission wheel 402 is arranged on the rotating shaft 404 near the roller sleeve 401. A conveying motor 8 is arranged below the first roller 4 on the rotating disc 9, and the conveying motor 8 is in transmission connection with the transmission wheel 402 through a chain. The rotating shaft 404 is driven to rotate by the conveying motor 8. The conveying motor 8 is directly installed below the first roller 4 and is connected through a precise chain transmission mechanism, which significantly reduces additional transmission components and effectively reduces space occupancy. This compact layout design optimizes the space utilization of the equipment, making the overall packaging equipment more compact and flexible, and easily adapting to various complex working environments. The chain transmission has high transmission efficiency and accurate transmission ratio, ensuring that the power output by the conveying motor 8 can be efficiently and accurately transmitted to the first roller 4, thereby ensuring that the first roller 4 can maintain a stable rotating state during packaging operations, driving the building materials to move smoothly and achieving uniform wrapping of the packaging film 3. In addition, the chain transmission mechanism is simple in structure, facilitating subsequent maintenance and replacement operations. When the chain is worn or fails, it can be quickly disassembled and replaced with a new chain, effectively controlling maintenance costs and operation time. One side of the first support 6 is provided with a locking module 7.

[0045] Example two

[0046] In order to facilitate the locking of the first roller 4, for example, Figures 1 to 4As shown, the application also includes: locking module 7 is provided with channel steel 701 and connecting rod 703, connecting rod 703 is provided with limiting rod 706, and through hole 702 is provided on channel steel 701, connecting rod 703 penetrates channel steel 701 through limiting rod 706 and through hole 702 to realize extension and retraction movement, limiting groove is arranged on the outer surface of channel steel 701, and the limiting groove is perpendicular to the through hole 702, when the limiting rod 706 of connecting rod 703 is located outside channel steel 701, limiting is realized through the limiting groove, when the rotating shaft 404 needs to be unlocked, the rotating shaft 404 is rotated by ninety degrees, the limiting rod 706 of connecting rod 703 is separated from the limiting groove, and then the limiting rod 706 of connecting rod 703 penetrates through the through hole 702 on channel steel 701, the precise cooperation between the limiting groove and the limiting rod 706 of connecting rod 703 effectively limits the movement of connecting rod 703 in a specific direction, thereby significantly enhancing the stability of the overall structure. Through the precise limiting groove design, it can be ensured that the limiting rod 706 of connecting rod 703 can be accurately positioned at the predetermined position when inserted or removed. This high-precision cooperation design helps to improve the reliability and performance of the equipment, effectively reduces the failure or error caused by inaccurate positioning, one end of connecting rod 703 located in channel steel 701 is provided with locking block 705, and the position and size of locking block 705 are matched with brake block 403, spring 704 is arranged between locking block 705 and channel steel 701, locking block 705 is pushed into contact with brake block 403 through the elastic force of spring 704, thereby locking the first roller 4, the elastic force of spring 704 can automatically push locking block 705 into close contact with brake block 403, realizing reliable locking of the first roller 4. The elastic force provided by spring 704 ensures the close contact between locking block 705 and brake block 403, realizing effective locking of the first roller 4. This reliable locking function can prevent the building materials from moving or falling due to the rotation of the roller during packaging, significantly improving the stability and safety of packaging. This design adopts a simple mechanical structure, including key components such as locking block 705, brake block 403, spring 704 and channel steel 701. This simple structure design reduces the manufacturing cost and use cost of the equipment, and makes the equipment easier to manufacture, install and maintain.

[0047] Working principle:

[0048] The building material to be packaged is placed in the appropriate position on the rotating disc 9, and the position and size of the packaging film 3 are adjusted to adapt to the size of the building material. The components such as the lifting motor 12, the rotating motor 11, and the conveying motor 8 are started by the control system. Under the drive of the motors, the components such as the rotating disc 9, the carrier roller, the lifting frame 1, and the film winding frame 2 start to work cooperatively. The lifting motor 12 drives the screw rod 101 to rotate through the transmission device, and in turn drives the sliding block 102 to move up and down on the screw rod 101. The film winding frame 2 is fixed on the sliding block 102, and thus moves up and down with the sliding block 102. When the film winding frame 2 is lifted to the appropriate position, the packaging film 3 can be tightly wound on the building material.

[0049] The rotating motor 11 drives the rotating disc 9 to rotate through the chain transmission device. The first carrier roller 4 and the second carrier roller 5 are installed on the rotating disc 9 through the first support 6 and the second support 10, and rotate with the rotating disc 9. The carrier rollers lift the product, which helps the packaging film 3 to be more evenly wound on the building material.

[0050] The conveying motor 8 drives the first carrier roller 4 to rotate through the chain transmission device. When it is necessary to lock the first carrier roller 4, the user rotates the connecting rod 703, and the connecting rod 703 of the locking module 7 pushes the locking block 705 to contact the brake block 403 through the elastic force of the spring 704, so as to prevent the rotation of the first carrier roller 4 and prevent the product from sliding on the first carrier roller 4. The design of the locking module 7 makes it possible to lock or unlock the carrier roller at any time as needed during the packaging process.

[0051] When the packaging reaches the predetermined effect, the equipment is turned off and the packaged building material is taken out.

[0052] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0053] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A rapid packaging device for environmentally friendly building materials, comprising a turntable (9), wherein a first bracket (6) and a second bracket (10) are mounted on the upper surface of the turntable (9), and a first roller (4) and a second roller (5) are rotatably mounted on the turntable (9) through the first bracket (6) and the second bracket (10), characterized in that: A lifting frame (1) is installed on one side of the turntable (9), a film winding frame (2) is slidably installed on the lifting frame (1), a packaging film (3) is fixed on the film winding frame (2), the first roller (4) is composed of a rotating shaft (404) and a roller sleeve (401), one end of the rotating shaft (404) is provided with a brake block (403), and the end of the rotating shaft (404) close to the roller sleeve (401) is provided with a transmission wheel (402), and a locking module (7) is provided on one side of the first bracket (6); The locking module (7) is provided with a channel steel (701) and a connecting rod (703), a limiting rod (706) is provided on the connecting rod (703), and a through hole (702) is provided through the channel steel (701), and the connecting rod (703) cooperates with the limiting rod (706) and the through hole (702) to penetrate the channel steel (701) for telescopic movement, and a locking block (705) is provided at one end of the connecting rod (703) located in the channel steel (701), and the position and size of the locking block (705) are adapted to the brake block (403).

2. The environmentally friendly building material rapid packaging equipment according to claim 1, characterized in that: A conveying motor (8) is provided on the turntable (9) below the first roller (4), and the conveying motor (8) is connected to the transmission wheel (402) of the first roller (4) through a chain.

3. The environmentally friendly building material rapid packaging equipment according to claim 1, characterized in that: A screw rod (101) is rotatably installed inside the lifting frame (1), a lifting motor (12) is installed on one side of the lifting frame (1), and the screw rod (101) is transmission-connected to the lifting motor (12).

4. The environmentally friendly building material rapid packaging equipment according to claim 3, characterized in that: A slider (102) is threadedly mounted on the screw rod (101), and the film winding frame (2) is fixed on the slider (102). The film winding frame (2) is driven by the slider (102) to rise and fall on the screw rod (101) of the lifting frame (1).

5. The environmentally friendly building material rapid packaging equipment according to claim 3, characterized in that: A rotating motor (11) is provided on the side of the lifting motor (12) facing away from the lifting frame (1); the turntable (9) is supported on the ground through a pulley, and a gear is provided on the lower surface of the turntable (9); the rotating motor (11) is connected to the gear of the turntable (9) through a chain, and the turntable (9) is driven to rotate by the rotating motor (11).

6. The environmentally friendly building material rapid packaging equipment according to claim 1, characterized in that: A spring (704) is provided between the locking block (705) and the channel steel (701), and the elastic force of the spring (704) pushes the locking block (705) into contact with the brake block (403), thereby locking the first roller (4).

7. The environmentally friendly building material rapid packaging equipment according to claim 1, characterized in that: A limiting groove is provided on the outer surface of the channel steel (701), and the limiting groove is perpendicular to the through hole (702). When the limiting rod (706) of the connecting rod (703) is located outside the channel steel (701), it is limited by the limiting groove.

Citation Information

Patent Citations

  • Tray formula stretch film packaging machine

    CN205738213U