Leftover material crushing structure for plastic cup thermal forming device
By setting a crushing structure on the plastic cup thermoforming device, scrap materials can be directly fed to the crushing mechanism. The height of the guide rollers can be adjusted by a sensor, which solves the problem of scrap materials needing to be heated, softened and crushed, thus improving production efficiency and reducing costs.
Patent Information
- Application Number
- CN202520212055.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-02-11
AI Technical Summary
In the current thermoforming process of plastic cups, scraps need to be heated and softened before being crushed, resulting in low production efficiency and high costs.
A crushing structure is set on the plastic cup thermoforming device, including a frame, a crushing mechanism, a clamping and conveying mechanism, guide rollers and a drive mechanism. The scrap material is directly fed to the crushing mechanism by the guide rollers. The height of the guide rollers is adjusted by the sensor to control the conveying speed and pressure, avoid breakage, and achieve rapid crushing without heating.
This improved the efficiency and reduced the cost of thermoforming plastic cups, avoided the centralized heating of scraps, and enabled efficient sheet production.
Smart Images
Figure CN223657409U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of plastic cup processing, especially relates to a leftover material crushing structure for plastic cup thermoforming device. BACKGROUND
[0002] Plastic cup is a kind of container for long drink of fruit juice, refreshing beverage, sweet wine, sour cocktail etc., and it is a commonly used disposable plastic cup. The disposable plastic cup used for making plastic cup usually has injection molding and thermoforming two ways, but the production cost of injection molding is high and the efficiency is low. Therefore, plastic cup is usually produced by thermoforming with high efficiency. Thermoforming is a special plastic processing method for processing thermoplastic plastic sheet into various products. The plastic sheet is clamped on the frame and heated to a softened state. Under the action of external force, it is tightly attached to the profile of the mold to obtain a shape similar to the profile. After cooling and setting, the product is finished after trimming.
[0003] The existing thermoforming mold for making plastic containers (such as plastic cups, plastic boxes, plastic pots, etc.) can complete forming and shearing processes. The thermoforming mold generally includes an upper forming mold and a lower forming mold. The upper forming mold usually also includes a stretching head. When making plastic containers, the plastic sheet is first heated to a forming temperature. The heated plastic sheet passes through the forming area. At this time, the thermoforming mold is closed, the stretching head pre-stretches the plastic sheet, and the shape and size of the plastic sheet are close to the product. Then, pressure thermoforming is carried out to make the plastic sheet tightly adhere to the forming mold. Then, the plastic container is sheared, and the plastic container is taken out of the mold to obtain the plastic cup product.
[0004] The leftover material formed by shearing during the thermoforming of the existing plastic cup needs to be heated and softened before being crushed and reused. The leftover material is collected first and then processed as a whole. This processing method requires a large amount of energy for heating and then crushing, and then sending to the sheet production device to produce sheets, which makes the production of sheets low in efficiency and high in cost, and the thermoforming production efficiency of plastic cups is low. UTILITY MODEL CONTENTS
[0005] Therefore, in view of the above problems, the utility model provides a leftover material crushing structure for plastic cup thermoforming device, which does not need to be collected first and then sent to the processing center, improves the crushing efficiency of sheet leftover material, and reduces the cost.
[0006] To solve the technical problem, the utility model discloses the following scheme: A kind of offcut crushing structure for plastic cup thermoforming device, including rack, controller, be located on the crushing mechanism of rack, clamping conveying mechanism, first guide roller, second guide roller, first drive mechanism and second drive mechanism, rack is located on the side of thermoforming device finished product output, the crushing mechanism is located in the lower part of rack, the clamping conveying mechanism is located in the upper part of rack, the first guide roller is rotatably located in the top of rack and first guide roller is also adjusted height on the top of rack by first drive mechanism, the second guide roller is rotatably located in the top of rack and second guide roller is also adjusted height on the top of rack by second drive mechanism, sheet offcut is sent to clamping conveying mechanism after being guided by first guide roller, the excess material generated after thermoforming device hot-pressing sheet into plastic cup is sent to clamping conveying mechanism after being guided by second guide roller, clamping conveying mechanism clamps and conveys sheet offcut and the excess material generated after hot-pressing into plastic cup to crushing mechanism and is crushed, the crushing mechanism, clamping conveying mechanism, first drive mechanism and second drive mechanism are all connected and controlled by controller.
[0007] Further improvement, the top of rack is equipped with two groups of support frames, each group of support frames includes first vertical rod, second vertical rod, first connecting rod and second connecting rod, first vertical rod and second vertical rod are spaced apart on the top of rack, first connecting rod one end and second connecting rod one end are hingedly connected with first vertical rod free end and second vertical rod free end respectively, first connecting rod other end and second connecting rod other end are rotatably connected with the both ends of the roller shaft of first guide roller or second guide roller to support first guide roller or second guide roller, first drive mechanism is located on the rack, and the output end of first drive mechanism is connected with first connecting rod or second connecting rod connected with first guide roller, to drive first guide roller to go up and down and adjust height, second drive mechanism is located on the rack, and the output end of second drive mechanism is connected with first connecting rod or second connecting rod connected with second guide roller, to drive second guide roller to go up and down and adjust height.
[0008] Further improvement, it further includes two inductors, two inductors are respectively located on two groups of support frames and induct sheet offcut and the excess material generated after hot-pressing into plastic cup to the pressure intensity of first guide roller and second guide roller and send to controller, and controller controls first drive mechanism to adjust the height of first guide roller or controls second drive mechanism to adjust the height of second guide roller according to the detection information of inductor.
[0009] Further improvement, the first drive mechanism and second drive mechanism are one of pneumatic cylinder, hydraulic cylinder or motor screw rod.
[0010] Further improvement, the rack top is provided with two groups of support frames, each group of support frames includes a first vertical rod, a second vertical rod, a first connecting rod and a second connecting rod, the first vertical rod and the second vertical rod are arranged at intervals on the rack top, one end of the first connecting rod and one end of the second connecting rod are hingedly connected with the free end of the first vertical rod and the free end of the second vertical rod respectively, the other end of the first connecting rod and the other end of the second connecting rod are rotatably connected with both ends of the roller shaft of the first guide roller or the second guide roller to support the first guide roller or the second guide roller, the first driving mechanism is arranged on the rack, and the output end of the first driving mechanism is connected with the first connecting rod and the second connecting rod connected with the first guide roller to drive the first guide roller to rise and fall to adjust the height, and the second driving mechanism is arranged on the rack, and the output end of the second driving mechanism is connected with the first connecting rod and the second connecting rod connected with the second guide roller to drive the second guide roller to rise and fall to adjust the height.
[0011] Further improvement, further comprising two sensors, the two sensors are arranged on the two groups of support frames to sense the pressure intensity of the first guide roller and the second guide roller generated by the excess material after the sheet material corner scraps and the hot-pressed plastic cups, and send to the controller, and the controller controls the first driving mechanism to adjust the height of the first guide roller or controls the second driving mechanism to adjust the height of the second guide roller according to the detection information of the sensor.
[0012] Further improvement, the first driving mechanism and the second driving mechanism each include two driving units, the output ends of the two driving units are respectively connected with the first connecting rod and the second connecting rod to synchronously drive the first guide roller or the second guide roller to rise and fall to adjust the height, and the driving unit is one of a pneumatic cylinder, a hydraulic cylinder or a motor screw.
[0013] The beneficial effects of the utility model are that the warm softened sheet material corner scraps and the excess material generated after hot pressing into plastic cups are respectively guided by the first guide roller and the second guide roller and directly sent to the crushing mechanism by the clamping conveying mechanism for crushing after being sent to the sheet production device for sheet production, so that the sheet material corner scraps do not need to be heated and softened and can be quickly crushed, and the production cost of the overall plastic cup thermoforming production device is reduced, high-efficiency plastic cup thermoforming production is realized; the first driving mechanism and the second driving mechanism are arranged to adjust the up-down height of the first guide roller and the second guide roller respectively, the conveying of the sheet material corner scraps can be effectively regulated in buffer and speed, the clamping conveying mechanism cannot effectively clamp and convey due to the sheet material corner scraps being too loose, and the crushing efficiency is improved; the inductor is arranged to sense the pressure intensity of the first guide roller and the second guide roller on the sheet material corner scraps and the excess material generated after hot pressing into plastic cups and send to the controller, the controller controls the first driving mechanism to adjust the height of the first guide roller or controls the second driving mechanism to adjust the height of the second guide roller according to the detection information of the inductor, so that the problem that the sheet material corner scraps and the excess material generated after hot pressing into plastic cups cannot be continuously conveyed and the sheet material corner scraps and the excess material generated after hot pressing into plastic cups are pulled off is avoided, the first guide roller and the second guide roller can cooperate with the clamping conveying mechanism to intermittently convey the sheet material corner scraps and the excess material generated after hot pressing into plastic cups to the crushing mechanism, the machine runs more smoothly, the work efficiency is improved, and the utility model can be widely applied. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 is a structural schematic view of the utility model embodiment containing the first driving mechanism and the second driving mechanism adjusting different states;
[0015] Figure 2 is another angle structural schematic view of the utility model embodiment. DETAILED DESCRIPTION
[0016] The utility model will be further described in combination with the drawings and specific embodiments.
[0017] REFERENCE Figure 1 and Figure 2, preferably the utility model discloses a plastic cup thermoforming device with corner material crushing structure, including frame 1, controller, the crushing mechanism 2 of being located on the frame 1, clamping conveying mechanism 3, first guide roller 4, second guide roller 5, two inductors, first drive mechanism 6 and second drive mechanism 7, frame 1 is located on the one side of thermoforming device finished product output, the crushing mechanism 2 is located in the lower part of frame 1, the clamping conveying mechanism 3 is located on the upper part of frame 1, and the clamping conveying mechanism 3 is a group of clamping roller group, frame 1 top is equipped with two sets of support frame, and each set of support frame includes first vertical rod 81, second vertical rod 82, first connecting rod 83 and second connecting rod 84, first vertical rod 81 and second vertical rod 82 are spaced apart and located on the top of frame 1, and the free end of first connecting rod 83 and the free end of second connecting rod 84 are hingedly connected with the first vertical rod 81 and the second vertical rod 82 respectively, and two sets of support frames are rotatably supported first guide roller 4 and second guide roller 5 respectively, and the other end of first connecting rod 83 and the other end of second connecting rod 84 are rotatably connected with the shaft ends of first guide roller 4 or second guide roller 5 to support first guide roller 4 or second guide roller 5, first drive mechanism 6 is arranged on frame 1, and the output end of first drive mechanism 6 is connected with first connecting rod 83 and second connecting rod 84 connected with first guide roller 4 to drive first guide roller 4 to go up and down and adjust height, and second drive mechanism 7 is arranged on frame 1, and the output end of second drive mechanism 7 is connected with first connecting rod 83 and second connecting rod 84 connected with second guide roller 5 to drive second guide roller 5 to go up and down and adjust height, and the first drive mechanism 6 and the second drive mechanism 7 all include two drive units, and the output ends of the two drive units are connected with first connecting rod 83 and second connecting rod 84 to synchronously drive first guide roller 4 or second guide roller 5 to go up and down and adjust height, the drive unit is a pneumatic cylinder, two inductors are arranged on two sets of support frames to induct the pressure intensity of sheet corner material and excess material generated after hot pressing into plastic cup to first guide roller 4 and second guide roller 5 and send to the controller, and the controller controls first drive mechanism 6 to adjust the height of first guide roller 4 or controls second drive mechanism 7 to adjust the height of second guide roller 5 according to the detection information of inductor, sheet corner material is sent to clamping conveying mechanism 3 after being guided by first guide roller 4, and excess material generated after thermoforming device hot pressing into plastic cup is sent to clamping conveying mechanism 3 after being guided by second guide roller 5, and clamping conveying mechanism 3 clamps and conveys sheet corner material and excess material generated after hot pressing into plastic cup to crushing mechanism 2 for crushing, and the crushing mechanism 2, clamping conveying mechanism 3, first drive mechanism 6 and second drive mechanism 7 are all connected and controlled by the controller.
[0018] The first guide roller and the second guide roller in the above embodiment can also be arranged in the following manner in cooperation with the first driving mechanism and the second driving mechanism: the top of the frame is provided with two groups of support frames, each group of support frames comprising a first vertical rod, a second vertical rod, a first connecting rod and a second connecting rod, the first vertical rod and the second vertical rod being arranged at intervals on the top of the frame, the first connecting rod and the second connecting rod being hingedly connected at one end to the free ends of the first vertical rod and the second vertical rod respectively, the other ends of the first connecting rod and the second connecting rod being rotatably connected to the two ends of the roller shaft of the first guide roller or the second guide roller to support the first guide roller or the second guide roller, the first driving mechanism being arranged on the frame and the output end of the first driving mechanism being connected to the first connecting rod or the second connecting rod connected to the first guide roller to drive the first guide roller to ascend and descend to adjust the height, the second driving mechanism being arranged on the frame and the output end of the second driving mechanism being connected to the first connecting rod or the second connecting rod connected to the second guide roller to drive the second guide roller to ascend and descend to adjust the height, two sensors being arranged on the two groups of support frames to sense the pressure intensity of the first guide roller and the second guide roller caused by the excess material of the sheet material after the sheet material is cut and the plastic cup is formed by hot pressing and send the pressure intensity to the controller, the controller controlling the first driving mechanism to adjust the height of the first guide roller or controlling the second driving mechanism to adjust the height of the second guide roller according to the detection information of the sensors, and the first driving mechanism and the second driving mechanism being one of a pneumatic cylinder, a hydraulic cylinder or a motor lead screw.
[0019] The driving unit in the above embodiment can also be one of a hydraulic cylinder or a motor lead screw.
[0020] Although the utility model is specifically shown and introduced in combination with the preferred embodiments, it should be understood by those skilled in the art that various changes can be made to the utility model in form and details without departing from the spirit and scope of the utility model defined in the appended claims, and all the changes are within the protection scope of the utility model.
Claims
1. A scrap crushing structure for a plastic cup thermoforming device, comprising a frame, a controller, a crushing mechanism mounted on the frame, a clamping and conveying mechanism, a first guide roller, a second guide roller, a first driving mechanism, and a second driving mechanism, characterized in that: The frame is located on the side of the finished product output of the thermoforming device. The crushing mechanism is located at the lower part of the frame, and the clamping and conveying mechanism is located at the upper part of the frame. The first guide roller is rotatably located at the top of the frame, and the height of the first guide roller at the top of the frame is adjusted by the first drive mechanism. The second guide roller is rotatably located at the top of the frame, and the height of the second guide roller at the top of the frame is adjusted by the second drive mechanism. Sheet scraps are guided by the first guide roller and then sent to the clamping and conveying mechanism. The residual material generated after the thermoforming device heat-presses the sheet into a plastic cup is guided by the second guide roller and then sent to the clamping and conveying mechanism. The clamping and conveying mechanism clamps and conveys the sheet scraps and the residual material generated after heat-pressing into a plastic cup to the crushing mechanism for crushing. The crushing mechanism, the clamping and conveying mechanism, the first drive mechanism, and the second drive mechanism are all connected and controlled by a controller.
2. The scrap crushing structure for the plastic cup thermoforming device according to claim 1, characterized in that: The top of the frame is provided with two sets of support frames. Each set of support frames includes a first upright, a second upright, a first connecting rod, and a second connecting rod. The first upright and the second upright are spaced apart on the top of the frame. One end of the first connecting rod and one end of the second connecting rod are hinged to the free ends of the first upright and the second upright, respectively. The other ends of the first connecting rod and the second connecting rod are rotatably connected to the two ends of the roller shaft of the first guide roller or the second guide roller, respectively, to support the first guide roller or the second guide roller. A first drive mechanism is provided on the frame, and the output end of the first drive mechanism is connected to the first connecting rod or the second connecting rod connected to the first guide roller to drive the first guide roller to move up and down to adjust its height. A second drive mechanism is provided on the frame, and the output end of the second drive mechanism is connected to the first connecting rod or the second connecting rod connected to the second guide roller to drive the second guide roller to move up and down to adjust its height.
3. The scrap crushing structure for the plastic cup thermoforming device according to claim 2, characterized in that: It also includes two sensors, which are respectively set on two sets of support frames to sense the pressure intensity of the sheet scraps and the residual material generated after hot pressing into plastic cups on the first guide roller and the second guide roller, and send the information to the controller. The controller controls the first drive mechanism to adjust the height of the first guide roller or controls the second drive mechanism to adjust the height of the second guide roller based on the detection information of the sensors.
4. The scrap crushing structure for the plastic cup thermoforming device according to claim 3, characterized in that: The first drive mechanism and the second drive mechanism are one of the following: a pneumatic cylinder, a hydraulic cylinder, or a motor lead screw.
5. The scrap crushing structure for the plastic cup thermoforming device according to claim 1, characterized in that: The top of the frame is provided with two sets of support frames. Each set of support frames includes a first upright, a second upright, a first connecting rod, and a second connecting rod. The first upright and the second upright are spaced apart on the top of the frame. One end of the first connecting rod and one end of the second connecting rod are hinged to the free ends of the first upright and the second upright, respectively. The other ends of the first connecting rod and the second connecting rod are rotatably connected to the two ends of the roller shaft of the first guide roller or the second guide roller, respectively, to support the first guide roller or the second guide roller. A first drive mechanism is provided on the frame, and the output end of the first drive mechanism is connected to the first connecting rod and the second connecting rod connected to the first guide roller, respectively, to drive the first guide roller to move up and down to adjust its height. A second drive mechanism is provided on the frame, and the output end of the second drive mechanism is connected to the first connecting rod and the second connecting rod connected to the second guide roller, respectively, to drive the second guide roller to move up and down to adjust its height.
6. The scrap crushing structure for the plastic cup thermoforming device according to claim 5, characterized in that: It also includes two sensors, which are respectively set on two sets of support frames to sense the pressure intensity of the sheet scraps and the residual material generated after hot pressing into plastic cups on the first guide roller and the second guide roller, and send the information to the controller. The controller controls the first drive mechanism to adjust the height of the first guide roller or controls the second drive mechanism to adjust the height of the second guide roller based on the detection information of the sensors.
7. The scrap crushing structure for the plastic cup thermoforming device according to claim 6, characterized in that: The first driving mechanism and the second driving mechanism each include two driving units. The output ends of the two driving units are respectively connected to the first connecting rod and the second connecting rod to synchronously drive the first guide roller or the second guide roller to move up and down to adjust the height. The driving unit is one of a cylinder, a hydraulic cylinder or a motor lead screw.