Conveying device for winding film production
By designing a conveyor device for stretch film production, and utilizing the combination of unloading and shock-absorbing components, automatic unloading and shock absorption of stretch film rolls are achieved, solving the problems of manual handling fatigue and damage from bumps, and improving transportation efficiency and stability.
Patent Information
- Application Number
- CN202520765987.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-22
AI Technical Summary
During the production of stretch film, manual handling of the roll of film is required multiple times, which leads to fatigue and low efficiency for workers, and the film is easily damaged due to bumps during transportation.
Design a conveying device for stretch film production. By combining unloading components and shock absorption components, a motor drives a threaded rod to drive a connecting rod and a limit bracket to realize the automatic flipping and unloading of stretch film rolls. The damping rod and spring work together to reduce the impact of bumps.
It improves the efficiency of unloading stretch film, reduces the workload of staff, avoids damage to stretch film caused by bumps, and enhances the stability during transportation.
Smart Images

Figure CN223919365U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of stretch film production technology, and in particular relates to a conveying device for stretch film production. Background Technology
[0002] Stretch film, also known as heat shrink film, comes in various types, including PE and PVC. Its applications are wide-ranging, primarily used in conjunction with pallets to consolidate loose goods into larger packages, replacing small containers. Because it can reduce bulk cargo transportation packaging costs by more than 30%, it is widely used for packaging various products such as hardware, minerals, chemicals, pharmaceuticals, food, and machinery. In warehousing, stretch film pallet packaging is also widely used abroad for three-dimensional storage and transportation to save space and floor space.
[0003] During the production of stretch film, it is always in the form of rolls. When these rolls of stretch film are transported on transport vehicles, they usually need to be picked up and dropped manually multiple times. During the picking process, workers need to bend over to work, which causes discomfort to workers for a long time, greatly increases their physical fatigue, and significantly reduces work efficiency. Therefore, a conveying device for stretch film production is proposed. Utility Model Content
[0004] The purpose of this invention is to provide a conveying device for stretch film production. By setting up an unloading component, specifically, pulling the push rod upward causes the door panel to flip upward. Then, the motor is started, which drives the connecting rod to move to the left via the threaded rod. When the connecting rod moves, it drives the support rod to move through the action of two limiting brackets. At this time, the two limiting brackets drive the storage frame to flip. The stretch film roll inside the storage frame rolls down from the right side of the storage frame, which greatly improves the unloading efficiency and solves the problem of having to manually pick up and drop the stretch film rolls multiple times. During the picking process, workers need to bend over, which causes discomfort to workers for a long time, greatly increases physical fatigue, and significantly reduces work efficiency.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model relates to a conveying device for stretch film production, comprising a main frame mechanism, the main frame mechanism including a supporting vehicle body, a storage frame at the top of the supporting vehicle body, an unloading assembly at the bottom of the storage frame, and a shock-absorbing assembly at the bottom of the supporting vehicle body. The number of shock-absorbing assemblies is four; the shock-absorbing assembly located on the left side of the front includes a caster wheel. The unloading assembly includes a motor, the right side of which is fixedly connected to the left side of the supporting vehicle body. A threaded rod is rotatably connected inside the supporting vehicle body, and a connecting rod is threadedly connected to the outer surface of the threaded rod. Limiting brackets are fixedly connected to the front and back of the left side of the bottom of the supporting vehicle body. Limiting frames are fixedly connected to the front and back of the right side of the vehicle body. A push rod is slidably connected inside the limiting frame on the front side. The push rod passes through the limiting frame and extends to the top and bottom. A limiting block is fixedly connected to the bottom of the push rod. Pulling the push rod upward will cause the door panel to flip upward. Then, the motor is started, which drives the connecting rod to move to the left through the threaded rod. When the connecting rod moves, it will drive the support rod to move through the action of the two limiting brackets. At this time, the two limiting brackets will drive the storage frame to flip. At this time, the winding film roll inside the storage frame will roll down from the right side of the storage frame, which greatly improves the unloading efficiency.
[0007] Furthermore, hinge blocks are provided on both the front and back sides of the right side of the storage frame. The bottom of each hinge block is fixedly connected to the front and back sides of the top right side of the supporting vehicle body. The right side inside the storage frame is rotatably connected to the hinge blocks via a pin. A door panel is rotatably connected to the right side of the storage frame via a pin. A handle is fixedly connected to the left side of the supporting vehicle body. Limiting rods are fixedly connected to the front and back sides of the right side of the door panel. A second limiting block is provided at the bottom of the first limiting block. The bottom of the second limiting block is fixedly connected to the inner wall of the limiting frame. When the two first limiting brackets move, they will drive the support rod to move. When the support rod moves, it will drive the storage frame to move through the action of the second limiting bracket. The bottom of the right side of the storage frame is rotatably connected to the supporting vehicle body via the hinge block. Therefore, when the two second limiting brackets move, they will drive the storage frame to flip.
[0008] Furthermore, the inclined surfaces of the first and second limiting blocks are in contact with the outer surface of the limiting rod. A spring is sleeved on the outer surface of the push rod. The top of the spring is fixedly connected to the top of the inner wall of the limiting frame. A limiting ring is fixedly connected to the bottom of the spring. The inside of the limiting ring is fixedly connected to the outer surface of the push rod. When the push rod is pulled upward, the limiting ring will compress the spring through the movement of the push rod. At this time, the push rod will drive the first and second limiting blocks away from each other. Then the limiting rod can be pulled out from the left side of the first and second limiting blocks. At this time, the door panel will perform an upward flipping movement.
[0009] Furthermore, the front and back sides of the supporting vehicle body are provided with sliding grooves, and a sliding rod is fixedly connected inside each of the two sliding grooves. A limiting bracket is slidably connected inside each of the two sliding grooves. The inside of each limiting bracket is slidably connected to the outer surface of the sliding rod. When the two limiting brackets move, they will slide on the outer surface of the sliding rod. At the same time, the two limiting brackets will also slide inside the two sliding grooves. Through the action of the sliding rod and the sliding groove, the movement trajectory of the limiting brackets is limited to a certain extent.
[0010] Furthermore, the two limiting brackets are fixedly connected to the front and back of the connecting rod on the side near the threaded rod. The right output end of the motor is fixedly connected to the left side of the threaded rod via a coupling. The inside of the two limiting brackets, on the side away from the slide rod, is rotatably connected to a support rod via a pin. The inside of the two support rods, on the side away from the limiting bracket, is rotatably connected to the inside of the limiting bracket 2, on the side away from the storage frame, via a pin. When the motor is started, the threaded rod is rotated. When the threaded rod rotates, it will drive the connecting rod to move to the left. When the connecting rod moves, it will drive the two limiting brackets to move.
[0011] Furthermore, a support plate is rotatably connected to the top of the omnidirectional wheel, and a damping rod is fixedly connected to the top of the support plate. The side of the damping rod away from the support plate is fixedly connected to the bottom of the support vehicle body. A second spring is sleeved on the outer surface of the damping rod. The top of the second spring is fixedly connected to the bottom of the support vehicle body, and the bottom of the second spring is fixedly connected to the top of the support plate. During the movement of the equipment, if it encounters a bumpy road section, the support vehicle body will move downward. When the support vehicle body moves, it will compress the damping rod. At the same time, the damping rod will move downward under the force, and the damping rod will buffer the force generated by the support vehicle body. When the support vehicle body moves downward, it will compress the second spring. The second spring will contract and store force under the limiting effect of the support plate. At the same time, the second spring will generate a certain rebound force and drive the support vehicle body to return to its original position. At this time, the support plate will buffer the force generated by the support vehicle body again through the action of the second spring, thus achieving a shock absorption effect.
[0012] This utility model has the following beneficial effects:
[0013] 1. This utility model, by setting up an unloading component, specifically pulls the push rod upward, causing the door panel to flip upward. Then, the motor is started, which drives the connecting rod to move to the left through the threaded rod. When the connecting rod moves, it drives the support rod to move through the action of two limit brackets. At this time, the two limit brackets drive the storage frame to flip. At this time, the wrapping film roll inside the storage frame will roll down from the right side of the storage frame, which greatly improves the unloading efficiency, avoids the situation where the staff have to pick up the wrapping film one by one, and greatly reduces the workload of the staff.
[0014] 2. This utility model incorporates a shock-absorbing component. Specifically, during equipment movement, the supporting vehicle body compresses the damping rod downwards, causing the damping rod to contract and store force. This damping rod buffers the force generated by the supporting vehicle body. Furthermore, as the supporting vehicle body moves downwards, it compresses the second spring, which generates a rebound force and causes the supporting vehicle body to return to its original position. The action of the second spring further buffers the force generated by the supporting vehicle body, achieving a shock-absorbing effect and preventing damage to the winding film roll inside the storage frame due to bumps.
[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the limiting frame of this utility model;
[0019] Figure 3 This is a schematic diagram of the overall structure of the support rod of this utility model;
[0020] Figure 4 This is a schematic diagram of the overall structure of the connecting rod of this utility model;
[0021] Figure 5 This is a schematic diagram of the overall structure of the support plate of this utility model.
[0022] The attached diagram lists the components represented by each number as follows:
[0023] 1. Main frame mechanism; 111. Support body; 112. Handle; 113. Storage frame; 114. Door panel; 115. Hinge block; 2. Unloading assembly; 211. Threaded rod; 212. Limiting frame; 213. Push rod; 214. Spring 1; 215. Limiting ring; 216. Limiting block 1; 217. Limiting block 2; 218. Limiting rod; 219. Motor; 220. Connecting rod; 221. Slide rod; 222. Slide groove; 223. Limiting bracket 1; 224. Support rod; 225. Limiting bracket 2; 3. Shock absorption assembly; 311. Casters; 312. Support plate; 313. Damping rod; 314. Spring 2. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1-5As shown, this utility model is a conveying device for stretch film production, including a main frame mechanism 1. The main frame mechanism 1 includes a support vehicle body 111. A storage frame 113 is provided on the top of the support vehicle body 111, and a material unloading assembly 2 is provided at the bottom of the storage frame 113. A shock-absorbing assembly 3 is provided at the bottom of the support vehicle body 111. There are four sets of shock-absorbing assemblies 3. The shock-absorbing assembly 3 located on the left side of the front includes a caster wheel 311. The material unloading assembly 2 includes a motor 219. The right side of the motor 219 is fixedly connected to the left side of the support vehicle body 111. A threaded rod 211 is rotatably connected inside the support vehicle body 111. A connecting rod 220 is threadedly connected to the outer surface of the threaded rod 211. Limit brackets are fixedly connected to the front and back of the left side of the bottom of the support vehicle body 111. 225, limiting frames 212 are fixedly connected to the front and back of the right side of the supporting vehicle body 111. A push rod 213 is slidably connected inside the limiting frame 212 on the front side. The push rod 213 passes through the limiting frame 212 and extends to the top and bottom. A limiting block 216 is fixedly connected to the bottom of the push rod 213. Pulling the push rod 213 upward will cause the door panel 114 to flip upward. Then, the motor 219 drives the connecting rod 220 to move to the left through the threaded rod 211. When the connecting rod 220 moves, it will drive the support rod 224 to move through the two limiting brackets 223. At this time, the two limiting brackets 225 will drive the storage frame 113 to flip. At this time, the inside of the storage frame 113... The stretch film rolls will roll down from the right side of the storage frame 113, greatly improving unloading efficiency and avoiding the need for workers to handle the stretch film individually, significantly reducing their workload. Hinge blocks 115 are provided on both the front and back of the right side of the storage frame 113. The bottom of both hinge blocks 115 are fixedly connected to the front and back of the top right side of the supporting vehicle body 111. The right side inside the storage frame 113 is rotatably connected to the hinge blocks 115 via pins. A door panel 114 is rotatably connected to the right side of the storage frame 113 via pins. A handle 112 is fixedly connected to the left side of the supporting vehicle body 111. Limiting rods 218 are fixedly connected to the front and back of the right side of the door panel 114. Limiting block 217 is provided at the bottom of limiting block 1 216. The bottom of limit block 217 is fixedly connected to the inner wall of limit frame 212. The inclined surfaces of limit block 1 216 and limit block 217 contact the outer surface of limit rod 218. Spring 1 214 is sleeved on the outer surface of push rod 213. The top of spring 1 214 is fixedly connected to the top of inner wall of limit frame 212. Limit ring 215 is fixedly connected to the bottom of spring 1 214. The inside of limit ring 215 is fixedly connected to the outer surface of push rod 213. Slide grooves 222 are opened on the front and back sides of the support body 111. Slide rods 221 are fixedly connected inside each slide groove 222. Limit brackets 223 are slidably connected inside each slide groove 222. The inside of each limit bracket 223 is slidably connected to the outer surface of slide rod 221.Both limiting brackets 223 are fixedly connected to the front and back of the connecting rod 220 on the side near the threaded rod 211. The right output end of the motor 219 is fixedly connected to the left side of the threaded rod 211 via a coupling. Support rods 224 are rotatably connected to the inside of both limiting brackets 223 on the side away from the slide rod 221 via pins. Support rods 224 are rotatably connected to the inside of limiting bracket 225 on the side away from the storage frame 113 via pins. A support plate 312 is rotatably connected to the top of the caster wheel 311. A damping rod 313 is fixedly connected to the top of the support plate 312. The side of the damping rod 313 away from the support plate 312 is fixedly connected to the bottom of the support vehicle body 111. A spring 314 is sleeved on the outer surface of the damping rod 313. The top of spring 314 is fixedly connected to the bottom of the support vehicle 111, and the bottom of spring 314 is fixedly connected to the top of the support plate 312. During equipment movement, the support vehicle 111 downwards compresses the damping rod 313, causing it to contract and store force. This damping rod 313 buffers the force generated by the support vehicle 111. Furthermore, as the support vehicle 111 moves downwards, it compresses spring 314, which then rebounds and resets the support vehicle 111. The spring 314 again buffers the force generated by the support vehicle 111, achieving a shock-absorbing effect and preventing damage to the winding film roll inside the storage frame 113 due to bumps.
[0026] A specific application of this embodiment is as follows: In use, the operator first places the wrapping film roll to be transported inside the storage frame 113. Then, the operator pushes the handle 112 to move the entire device via the casters 311. During the movement of the device, if it encounters a bumpy section, the support vehicle 111 will move downwards. The movement of the support vehicle 111 will compress the damping rod 313, causing the damping rod 313 to move downwards under the force. Simultaneously, the damping rod 313 will buffer the force generated by the support vehicle 111, and the downward movement of the support vehicle 111 will also affect the spring. When spring 314 is compressed, it contracts and stores force under the limiting action of support plate 312. Simultaneously, spring 314 generates a certain rebound force, causing the support vehicle body 111 to return to its original position. At this time, support plate 312, through the action of spring 314, further buffers the force generated by the support vehicle body 111, achieving a shock-absorbing effect and preventing damage to the winding film roll inside the storage frame 113 due to bumps. Upon arrival at the unloading location, the worker first pulls push rod 213 upwards. At this time, the limiting ring 215, through the movement of push rod 213, compresses spring 214. Then, push rod 213 will... Limiting block 1 216 and limiting block 2 217 are moved apart. At this time, limiting rod 218 can be pulled out from the left side of limiting block 1 216 and limiting block 2 217. Then, door panel 114 will flip upward. Then, the operator starts motor 219 to drive threaded rod 211 to rotate. When threaded rod 211 rotates, it will drive connecting rod 220 to move to the left. When connecting rod 220 moves, it will drive two limiting brackets 1 223 to move. When the two limiting brackets 1 223 move, they will slide on the outer surface of slide rod 221. At the same time, the two limiting brackets 1 223 will also slide inside the two sliding grooves 222. The rod 221 and the slide 222 limit the movement trajectory of the first limiting bracket 223. When the two first limiting brackets 223 move, they will drive the support rod 224 to move. When the support rod 224 moves, it will drive the storage frame 113 to move through the second limiting bracket 225. The bottom right side of the storage frame 113 is rotatably connected to the support vehicle body 111 through the hinge block 115. Therefore, when the two second limiting brackets 225 move, they will drive the storage frame 113 to flip. At this time, the winding film roll inside the storage frame 113 will roll down from the right side of the storage frame 113, which greatly improves the unloading efficiency.
[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with this embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0028] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A conveying device for stretch film production, characterized in that: The main frame mechanism (1) includes a support vehicle body (111), a storage frame (113) is provided on the top of the support vehicle body (111), a material unloading assembly (2) is provided at the bottom of the storage frame (113), and a shock absorption assembly (3) is provided at the bottom of the support vehicle body (111). The number of shock absorption assemblies (3) is four, and the shock absorption assembly (3) located on the left side of the front includes a caster wheel (311). The unloading assembly (2) includes a motor (219), the right side of which is fixedly connected to the left side of the support vehicle body (111). A threaded rod (211) is rotatably connected inside the support vehicle body (111), and a connecting rod (220) is threadedly connected to the outer surface of the threaded rod (211). A second limit bracket (225) is fixedly connected to the front and back sides of the bottom left side of the support vehicle body (111). A limit frame (212) is fixedly connected to the front and back sides of the right side of the support vehicle body (111). A push rod (213) is slidably connected inside the limit frame (212) located on the front side. The push rod (213) passes through the limit frame (212) and extends to the top and bottom. A first limit block (216) is fixedly connected to the bottom of the push rod (213).
2. The conveying device for stretch film production according to claim 1, characterized in that, The storage frame (113) has hinge blocks (115) on both the front and back sides of its right side. The bottom of each of the two hinge blocks (115) is fixedly connected to the front and back sides of the top right side of the supporting vehicle body (111). The right side inside the storage frame (113) is rotatably connected to the hinge blocks (115) via a pin. The right side of the storage frame (113) is rotatably connected to a door panel (114) via a pin.
3. The conveying device for stretch film production according to claim 2, characterized in that, A handle (112) is fixedly connected to the left side of the supporting vehicle body (111), and a limit rod (218) is fixedly connected to the front and back of the right side of the door panel (114). A limit block two (217) is provided at the bottom of the first limit block (216), and the bottom of the second limit block (217) is fixedly connected to the inner wall of the limit frame (212).
4. A conveying device for stretch film production according to claim 3, characterized in that, The inclined surfaces of the first limiting block (216) and the second limiting block (217) are in contact with the outer surface of the limiting rod (218). The outer surface of the push rod (213) is fitted with a first spring (214). The top of the first spring (214) is fixedly connected to the top of the inner wall of the limiting frame (212). The bottom of the first spring (214) is fixedly connected to a limiting ring (215). The inside of the limiting ring (215) is fixedly connected to the outer surface of the push rod (213).
5. A conveying device for stretch film production according to claim 4, characterized in that, The front and back sides of the support vehicle body (111) are provided with sliding grooves (222), and sliding rods (221) are fixedly connected inside the two sliding grooves (222). Limiting brackets (223) are slidably connected inside the two sliding grooves (222), and the two limiting brackets (223) are slidably connected to the outer surface of the sliding rods (221).
6. A conveying device for stretch film production according to claim 5, characterized in that, The two limiting brackets (223) are fixedly connected to the front and back of the connecting rod (220) on the side near the threaded rod (211). The right output end of the motor (219) is fixedly connected to the left side of the threaded rod (211) through a coupling. The side of the two limiting brackets (223) away from the slide rod (221) is rotatably connected to the support rod (224) through a pin. The side of the two support rods (224) away from the limiting bracket (223) is rotatably connected to the side of the limiting bracket (225) away from the storage frame (113) through a pin.
7. A conveying device for stretch film production according to claim 6, characterized in that, The top of the universal wheel (311) is rotatably connected to a support plate (312), and the top of the support plate (312) is fixedly connected to a damping rod (313). The side of the damping rod (313) away from the support plate (312) is fixedly connected to the bottom of the support vehicle body (111). A second spring (314) is sleeved on the outer surface of the damping rod (313). The top of the second spring (314) is fixedly connected to the bottom of the support vehicle body (111), and the bottom of the second spring (314) is fixedly connected to the top of the support plate (312).