PET bottle blank water gap treatment device
By designing the PET bottle preform water port treatment device, the excess water port is cut off and recovered, the problem of surface defects of the bottle preform is solved, the appearance quality is improved and cost savings.
Patent Information
- Application Number
- CN202422345111.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-25
AI Technical Summary
During the injection molding process of existing PET bottle preforms, excess water remains at the tail end of some bottle preforms, resulting in surface defects that affect the appearance quality and reduce product competitiveness.
A PET bottle preform water port treatment device is designed, including a left and right workbench, a mold fixing seat, an electric push rod, a scraper and a return box. The water port is cut off by a scraper and collected into the return box, so as to realize the centralized treatment and recycling of the water port.
Improve the appearance quality of bottle preforms, improve product competitiveness, and save production costs through recycling.
Smart Images
Figure CN223085327U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of PET preforms, and particularly relates to a device for processing the sprue of PET preforms. Background Art
[0002] With the rapid development of China's economy, the demand for packaging materials is increasing day by day. Especially, PET (polyethylene terephthalate) preforms, as common packaging materials, are more and more favored by the market. PET preforms have the advantages of light weight, high transparency, good chemical resistance, and easy recycling, and are widely used in the fields of food, beverage, medicine, etc. In the production process of PET preforms, sprue processing is one of the key links. The sprue refers to the surface defects such as water marks, bubbles, and white spots generated during the forming process of the preform due to uneven cooling speed. These defects will affect the appearance quality of the preform and reduce the market competitiveness of the product. Therefore, it is crucial to effectively process the sprue of PET preforms.
[0003] In the existing PET preform production device, during the injection molding process of the preform, some of the tails of the preforms will have residual redundant sprues, resulting in defects on the surface of the preforms and affecting the aesthetic effect of the products. Summary of the Utility Model
[0004] Aiming at the problem that in the existing technology, during the injection molding process of preforms, some of the tails of the preforms will have residual redundant sprues, resulting in defects on the surface of the preforms, the utility model proposes the following technical solutions:
[0005] A device for processing the sprue of PET preforms includes: a left workbench and a right workbench. One end of the left workbench is fixedly installed with a fixed mold base. A cavity is opened at one end of the right workbench corresponding to the position of one end of the fixed mold base. An electric push rod is fixedly installed at the top end of the inner wall of the right workbench. The number of the electric push rods is set to two in total. A push plate is fixedly connected between one ends of the two electric push rods. A threaded rod is connected to the inside of the push plate by threads. A telescopic rod is fixedly connected to the bottom end of the push plate. The number of the telescopic rods is set to two in total. A knife holder is fixedly connected between the output shafts of the two telescopic rods. A scraper is snap-connected to the bottom end of the knife holder.
[0006] Preferably, the bottom end of the threaded rod is movably connected to the top end of the knife holder.
[0007] Preferably, a number of holes are opened inside the right workbench.
[0008] Preferably, a material return box is arranged inside the right workbench, and a box door is arranged at one end of the front surface of the right workbench corresponding to the position of the material return box.
[0009] As a preference of the above technical solution, a spring is fixedly connected inside the right workbench at a position at one end of the material return box, and a rubber plate is fixedly connected to the end of the spring away from the right workbench.
[0010] As a preference of the above technical solution, one side of the rubber plate away from the spring is attached to one end of the material return box.
[0011] The beneficial effects of the present utility model are as follows:
[0012] (1) By arranging a scraping knife inside the workbench, the present utility model cuts off the gate generated during the injection molding process of the preform, thereby improving the appearance quality of the formed preform and enhancing the competitiveness of the product;
[0013] (2) By installing a material return box inside the workbench, the present utility model enables the cut-off gate to fall into the material return box due to its own gravity, centrally processes and recycles the excess gate, thus saving production costs. Description of the Drawings
[0014] Figure 1 Shows an overall structural schematic diagram of a PET preform gate treatment device;
[0015] Figure 2 Shows an internal structural schematic diagram of the right workbench of a PET preform gate treatment device;
[0016] Figure 3 Shows Figure 2 a structural schematic diagram of area A in
[0017] Figure 4 Shows Figure 2 a structural schematic diagram of area B in
[0018] In the figure: 1, left workbench; 2, right workbench; 3, fixed mold base; 4, cavity; 5, hole; 6, electric push rod; 7, push plate; 8, threaded rod; 9, tool holder; 10, scraping knife; 11, telescopic rod; 12, material return box; 13, box door; 14, rubber plate; 15, spring. Detailed Embodiments
[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments.
[0020] Embodiment 1
[0021] The present utility model provides a PET preform gate treatment device, as shown in Figures 1 to 3As shown in the figure, it includes a left workbench 1 and a right workbench 2. A fixed mold base 3 is fixedly installed at one end of the left workbench 1. A number of holes 5 are provided inside the right workbench 2. A cavity 4 is provided at one end of the right workbench 2. An electric push rod 6 is fixedly installed at the top end of the inner wall of the right workbench 2. The number of electric push rods 6 is set to two in total. The bottom ends of the two electric push rods 6 are fixedly connected to the same push plate 7. A threaded rod 8 is connected inside the push plate 7 by a thread. A telescopic rod 11 is fixedly connected to the bottom end of the push plate 7. The number of telescopic rods 11 is set to two in total. The output ends of the two telescopic rods 11 are fixedly connected to the same tool holder 9. To ensure the stability of the tool holder 9 during movement, a scraping knife 10 is snap-connected to the bottom end of the tool holder 9. The scraping knife 10 is snap-connected to the bottom end of the tool holder 9 by a snap connection method. When the scraping knife 10 is worn after cutting the sprue for a long time, it is convenient to disassemble and replace the scraping knife 10 through the snap connection. The bottom end of the threaded rod 8 is in movable contact with the top end of the tool holder 9. By rotating the threaded rod 8, the threaded rod 8 moves downward. When the bottom end of the threaded rod 8 touches the top end of the tool holder 9, then rotate the threaded rod 8 to move the threaded rod 8 downward to push the tool holder 9 downward. According to the need to cut the sprue, the distance that the tool holder 9 moves downward is adjusted accordingly.
[0022] As Figure 2 and Figure 4 shown in the figure, a material return box 12 is arranged inside the right workbench 2. A box door 13 is arranged at one end of the front of the right workbench 2 at the position of the material return box 12. The cut sprue falls into the material return box 12 due to its own gravity, which is convenient for recycling and centralized treatment of the redundant sprue, saving cost resources. A spring 15 is fixedly connected to the right workbench 2 at one end position of the material return box 12. One end of the spring 15 away from the right workbench 2 is fixedly connected to a rubber plate 14. The side of the rubber plate 14 away from the spring 15 is in movable contact with one end of the material return box 12. When the staff puts the material return box 12 into the right workbench 2, through the combined action of the spring 15 and the rubber plate 14 arranged inside the right workbench 2, the collision of the material return box 12 against the inner wall of the right workbench 2 is slowed down.
[0023] Working principle: When using this device, according to the required sprue to be cut, rotate the threaded rod 8 to make the threaded rod 8 move towards the inner wall of the right workbench 2. When the bottom end of the threaded rod 8 moves to the top end of the tool holder 9, continue to rotate the threaded rod 8 to make the threaded rod 8 push the entire tool holder 9 towards the inner wall of the right workbench 2. When the tool holder 9 moves to the required height, start the electric push rod 6. The electric push rod 6 drives the push plate 7 to move downward. When the push plate 7 moves down to the position of the hole 5, the scraping knife 10 at the bottom end of the tool holder 9 starts to cut the redundant sprue of the preform, thereby improving the appearance quality of the formed preform and enhancing the aesthetic degree of the preform. The cut sprue falls into the material return box 12. After cutting is completed, open the box door 13, take out the redundant sprue inside the material return box 12 centrally and recycle it to save production costs.
[0024] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it.
Claims
1. A PET preform sprue handling device, characterized in that, Including: A left workbench (1) and a right workbench (2). One end of the left workbench (1) is fixedly installed with a fixed mold base (3). A cavity (4) is provided at a position corresponding to one end of the fixed mold base (3) at one end of the right workbench (2). An electric push rod (6) is fixedly installed at the top end of the inner wall of the right workbench (2). The number of the electric push rods (6) is set to two in total. A push plate (7) is fixedly connected between one ends of the two electric push rods (6). A threaded rod (8) is connected inside the push plate (7) by threads. An expansion rod (11) is fixedly connected to the bottom end of the push plate (7). The number of the expansion rods (11) is set to two in total. A tool holder (9) is fixedly connected between the output shafts of the two expansion rods (11). A scraping knife (10) is snap-connected to the bottom end of the tool holder (9).
2. The PET preform gate treatment device according to claim 1, wherein, The bottom end of the threaded rod (8) is movably connected to the top end of the tool holder (9).
3. The PET preform gate treatment device according to claim 1, wherein, A number of holes (5) are provided inside the right workbench (2).
4. The PET preform gate treatment device according to claim 1, characterized in that, A material return box (12) is arranged inside the right workbench (2). A box door (13) is arranged at one end of the front surface of the right workbench (2) where the material return box (12) is located.
5. The PET preform gate treatment device according to claim 1, characterized in that, A spring (15) is fixedly connected at one end of the inner part of the right workbench (2) where the material return box (12) is located. One end of the spring (15) away from the right workbench (2) is fixedly connected to a rubber plate (14).
6. The PET preform gate treatment device according to claim 5, characterized in that, One side of the rubber plate (14) away from the spring (15) is attached to one end of the material return box (12).