Plastic product processing and forming mold
By designing a quick-change mold structure and using electromagnets to assist in demolding, the problems of mold wear and frequent maintenance were solved, improving production flexibility and efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN NANHAI DISTRICT DALI CHUANGBAO ENVIRONMENTAL PROTECTION EQUIPMENT CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-15
AI Technical Summary
Existing plastic product processing molds cannot quickly respond to changes in market demand, resulting in low production flexibility. They are also prone to wear and damage during long-term use, requiring frequent maintenance, which increases costs and downtime.
A plastic product processing mold with quick mold change capability was designed. By combining limiting components, demolding components and buffer components, the mold can be quickly changed and stably positioned, reducing wear. Electromagnet-assisted demolding is used to improve production flexibility and efficiency.
It enables rapid mold replacement, reduces maintenance costs and time, improves production flexibility and product qualification rate, ensures product appearance, and shortens demolding time.
Smart Images
Figure CN224240140U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of plastic product processing technology, and specifically relates to a plastic product processing molding die. Background Technology
[0002] Plastic product molding dies are key process equipment for plastic molding, transforming plastic raw materials into products with predetermined shapes, sizes, and properties through specific structures. They are diverse, encompassing injection molds, blow molds, and extrusion molds. Injection molds use an injection molding machine to inject molten plastic into a cavity, which then cools and solidifies, suitable for complex-shaped products. Blow molds use compressed air to expand a thermoplastic preform to fit the mold cavity, often used in the manufacture of hollow containers. Extrusion molds allow plastic to continuously pass through a die of a specific shape under the push of a screw, forming continuous profiles such as pipes and sheets. The design and manufacturing precision of molds directly affect the quality, production efficiency, and cost of plastic products. With the development of new materials and processes, high-precision, long-life, and intelligent molds are becoming the industry trend.
[0003] Announcement No. "CN216372958U" discloses a molding die for processing plastic products, belonging to the field of plastic product processing technology. It includes a base plate, a side plate on the upper side of the base plate, a lower mold base at the upper center of the base plate, a top plate on the upper side plate, and an upper mold base at the lower end of the top plate. A cooling and heat-reducing component is provided on the side of the side plate. The cooling and heat-reducing component includes a water pump, an inlet pipe, a cooling fan, a dust cover, a condenser pipe, a return pipe, a water tank, and a suction pipe. The side plate has an internal dust cover. This invention, by incorporating a cooling and heat-reducing component, can cool the processed plastic products, thereby increasing the processing and molding speed. The cooling fan, in conjunction with the water-cooling component, can quickly blow the cold air generated by the condenser pipe to the area around the plastic products to be cooled, thus accelerating the cooling process.
[0004] While the aforementioned utility model can quickly blow the cold air generated by the condenser tube to the plastic product being cooled, thereby accelerating the cooling process, market demands are complex and ever-changing. Different plastic products require different molds for production. If the molds cannot be changed, companies can only produce a single type of product, reducing production flexibility. Furthermore, molds will wear and tear due to high temperatures, high pressures, and material friction during long-term use. If they cannot be replaced in time, companies will have to invest heavily in repeated repairs. The long repair cycle leads to prolonged production line downtime, increasing equipment idle costs. Simultaneously, frequent repairs may affect product quality stability, resulting in more defective products and further increasing production costs. Utility Model Content
[0005] In response to the problems mentioned in the background art, the purpose of this utility model is to provide a plastic product processing molding mold to solve the problems of complex and ever-changing market demands, the need for different molds to be adapted for the production of different plastic products, and the fact that if the mold cannot be replaced, enterprises can only produce a single type of product, which reduces the flexibility of production. Moreover, the mold will wear out and be damaged due to factors such as high temperature, high pressure and material friction during long-term use.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0007] A plastic product processing mold includes a base, with support columns symmetrically fixedly connected to the top of the base, a top plate fixedly connected to the top of the support columns, a cylinder mounted on the top of the top plate, a lifting seat fixedly connected to the telescopic end of the cylinder, a mounting plate threadedly connected to the bottom of the lifting seat, an upper mold fixedly connected to the bottom of the mounting plate, a movable seat slidably connected to the top of the base, a lower mold fixedly connected to the top of the movable seat, limit components symmetrically mounted on the top of the movable seat, a mold groove opened on the top of the lower mold, a demolding component installed at the bottom of the mold groove, and a buffer component installed on the outside of the support columns.
[0008] The limiting assembly includes a cavity, a movable plate, a first return spring, a connecting post, a handle, and a fixed post. A fixed seat is symmetrically fixedly connected to the top of the movable seat. A cavity is formed inside the fixed seat, and the top of the cavity is fixedly connected to the first return spring. The other end of the first return spring is fixedly connected to the movable plate. A connecting post is fixedly connected to the top of the movable plate. The other end of the connecting post extends out of the fixed seat and is fixedly connected to the handle. The first return spring is sleeved on the outside of the connecting post. A fixed post is fixedly connected to the other side of the movable plate. The fixed post extends out of the bottom of the movable seat. Fixed holes are symmetrically formed on the top of the base, and the fixed post and fixed holes are inserted into each other. T-slots are symmetrically formed on the top of the base. T-blocks are symmetrically fixedly connected to the bottom of the movable seat, and the T-blocks and T-slots are slidably connected. This allows enterprises to quickly respond to changes in market demand, enabling them to change molds promptly according to requirements and rapidly adjust the production of different types, specifications, and shapes of plastic products. This improves production flexibility. Furthermore, the replaceable mold reduces over-reliance on and wear of a single mold. When a mold is worn or damaged, a new mold can be directly replaced without repeated repairs, saving significant maintenance costs and time.
[0009] As a preferred technical solution, the demolding assembly includes built-in holes, a movable pillar, a second return spring, an ejector plate, a magnetic pillar, a through hole, and an electromagnet. Built-in holes are symmetrically arranged at the bottom of the mold groove. A second return spring is fixedly connected to the bottom of each built-in hole. A movable pillar is fixedly connected to the other end of the second return spring. An ejector plate is fixedly connected to the other end of the movable pillar. A magnetic pillar is fixedly connected to the center of the bottom of the ejector plate. A through hole is provided at the bottom of the mold groove. The magnetic pillar and the through hole are slidably connected. An electromagnet is installed at the bottom of the lower mold. The electromagnet and the magnetic pillar are magnetically connected. This assembly can push the product out of the mold with uniform and stable force, avoiding problems such as product deformation and damage caused by uneven force or improper operation during manual demolding. It also prevents scratches and tears on the product surface, ensuring a good product appearance, improving product qualification rate, and reducing losses caused by defective products for enterprises. Compared with manual demolding, it greatly shortens demolding time and improves efficiency.
[0010] As a preferred technical solution, the bottom of the mounting plate is symmetrically fixedly connected with limit posts, and the top of the lower mold is symmetrically opened with limit holes. The limit posts and limit holes are inserted into each other. During the mold closing process, the mold misalignment and cavity mismatch caused by position deviation are avoided, ensuring the dimensional accuracy of the plastic product molding and reducing the defect rate caused by inaccurate positioning.
[0011] As a preferred technical solution, the buffer assembly includes a buffer plate and a buffer spring. The buffer plate is sleeved on the outside of the support column, and the buffer plate is slidably connected to the support column. The buffer spring is sleeved on the outside of the support column, and its two ends are fixedly connected to the bottom of the buffer plate and the top of the base, respectively. During the mold opening and closing process, the elastic deformation of the buffer spring can absorb and disperse the impact force. The buffer plate slides along the support column to provide buffer space for the spring. When the mold is subjected to external force impact or vibration occurs when the mold is closed, the buffer assembly can convert this energy into the elastic potential energy of the spring, which greatly reduces the impact of vibration on the mold and avoids the loosening and wear of parts caused by severe vibration of the mold.
[0012] In summary, the present invention has the following main advantages:
[0013] Firstly, in this utility model, pulling the handle upward causes the connecting column to move the moving plate and the fixed column. The moving plate presses against the first return spring, which is compressed. At the same time, the fixed column retracts into the cavity, merging the moving seat together with the lower mold and the base. After pushing the lower mold to the designated position, releasing the handle resets the first return spring, and the moving plate rebounds, causing the fixed column to pop out and engage with the fixing hole. This allows enterprises to quickly respond to changes in market demand, enabling them to change molds in a timely manner according to needs and rapidly adjust the production of different types, specifications, and shapes of plastic products. This improves production flexibility. Moreover, the replaceable mold reduces over-reliance on and wear and tear on a single mold. When the mold is worn or damaged, a new mold can be directly replaced without repeated repairs, saving a significant amount of maintenance costs and time.
[0014] Secondly, in this utility model, activating the electromagnet causes it to magnetically connect with the magnetic column, which in turn causes the magnetic column to lower the ejector plate. The ejector plate then lowers the moving column, pressing it against the second return spring. The second return spring is compressed. When the molding process is complete, the electromagnet is deactivated, the magnetic connection between the electromagnet and the magnetic column ends, the second return spring resets, and the moving column causes the ejector plate to spring back, ejecting the workpiece from the mold groove. This allows for the uniform and stable ejection of the product from the mold, avoiding problems such as deformation and damage caused by uneven force or improper operation during manual demolding. It also prevents scratches, tears, and other defects on the product surface, ensuring a good product appearance, improving the product qualification rate, and reducing losses caused by defective products for enterprises. Compared with manual demolding, it greatly shortens the demolding time and improves efficiency. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0016] Figure 2 This is a bottom-view three-dimensional structural diagram of the present invention;
[0017] Figure 3 This is a cross-sectional three-dimensional structural schematic diagram of the present invention;
[0018] Figure 4 This is the utility model Figure 3 Enlarged view of part A;
[0019] Figure 5 This is the utility model Figure 3 Enlarged view of part B.
[0020] Reference numerals: 1. Base; 2. Support column; 3. Top plate; 4. Cylinder; 5. Mounting plate; 6. Upper mold; 7. Moving seat; 8. Lower mold; 9. Mold groove; 10. Limiting column; 11. Limiting hole; 12. Fixed seat; 13. Limiting assembly; 131. Cavity; 132. Moving plate; 133. First return spring; 134. Connecting column; 135. Pull handle; 136. Fixed column; 14. Fixed hole; 15. T-slot; 16. T-block; 17. Demolding assembly; 171. Internal hole; 172. Moving column; 173. Second return spring; 174. Ejector plate; 175. Magnetic column; 176. Through hole; 177. Electromagnet; 18. Buffer assembly; 181. Buffer plate; 182. Buffer spring; 19. Lifting seat. Detailed Implementation
[0021] Example
[0022] refer to Figures 1 to 5 The plastic product processing and molding mold described in this embodiment includes a base 1, a support column 2 symmetrically fixedly connected to the top of the base 1, a top plate 3 fixedly connected to the top of the support column 2, a cylinder 4 installed on the top of the top plate 3, a lifting seat 19 fixedly connected to the telescopic end of the cylinder 4, an installation plate 5 threadedly connected to the bottom of the lifting seat 19, an upper mold 6 fixedly connected to the bottom of the installation plate 5, a movable seat 7 slidably connected to the top of the base 1, a lower mold 8 fixedly connected to the top of the movable seat 7, limit components 13 symmetrically installed on the top of the movable seat 7, a mold groove 9 opened on the top of the lower mold 8, a demolding component 17 installed at the bottom of the mold groove 9, and a buffer component 18 installed on the outside of the support column 2.
[0023] The limiting assembly 13 includes a cavity 131, a movable plate 132, a first return spring 133, a connecting post 134, a handle 135, and a fixing post 136. A fixing seat 12 is symmetrically fixedly connected to the top of the movable seat 7. A cavity 131 is formed inside the fixing seat 12. The first return spring 133 is fixedly connected to the top of the cavity 131. The movable plate 132 is fixedly connected to the other end of the first return spring 133. A connecting post 134 is fixedly connected to the top of the movable plate 132. The other end of the connecting post 134 extends out of the fixing seat 12 and is fixedly connected to a handle 135. The first return spring 133 is sleeved on the outside of the connecting post 134. A fixing post 136 is fixedly connected to the other side of the movable plate 132. The column 136 extends out of the bottom of the movable seat 7. The top of the base 1 has symmetrical fixing holes 14. The fixing column 136 is inserted into the fixing hole 14. Pulling the handle 135 upward causes the connecting column 134 to move the movable plate 132 and the fixing column 136. The movable plate 132 presses against the first return spring 133, which is compressed. At the same time, the fixing column 136 retracts into the cavity 131, merging the movable seat 7 together with the lower mold 8 and the base 1. After pushing the lower mold 8 to the designated position, the handle 135 is released, the first return spring 133 returns to its original position, and the movable plate 132 rebounds, causing the fixing column 136 to pop out and insert into the fixing hole 14.
[0024] refer to Figure 1 The top of the base 1 is symmetrically provided with T-shaped grooves 15, and the bottom of the movable seat 7 is symmetrically fixedly connected with T-shaped blocks 16. The T-shaped blocks 16 and the T-shaped grooves 15 are slidably connected. When the movable seat 7 together with the lower mold 8 is merged with the base 1, the movable seat 7 drives the T-shaped blocks 16 and the T-shaped grooves 15 to slide together.
[0025] refer to Figure 5The demolding assembly 17 includes an internal hole 171, a movable pillar 172, a second return spring 173, an ejector plate 174, a magnetic pillar 175, a through hole 176, and an electromagnet 177. The bottom of the mold groove 9 has symmetrically arranged internal holes 171. The bottom of the internal hole 171 is fixedly connected to the second return spring 173. The other end of the second return spring 173 is fixedly connected to the movable pillar 172. The other end of the movable pillar 172 is fixedly connected to the ejector plate 174. The center of the bottom of the ejector plate 174 is fixedly connected to the magnetic pillar 175. The bottom of the mold groove 9 has a through hole 176. The magnetic pillar 175 and the through hole 176 are slidably connected. An electromagnet is installed at the bottom of the lower mold 8. Iron 177, electromagnet 177 and magnetic column 175 are magnetically connected. Limiting columns 10 are symmetrically fixed at the bottom of mounting plate 5. When electromagnet 177 is activated, it magnetically connects with magnetic column 175, causing magnetic column 175 to drive ejector plate 174 to descend. Ejector plate 174 drives moving column 172 to descend and press against second return spring 173. Second return spring 173 is compressed. When the molding operation is completed, electromagnet 177 is turned off, electromagnet 177 and magnetic column 175 end the magnetic connection, second return spring 173 returns to its original position, and moving column 172 drives ejector plate 174 to spring back, ejecting the workpiece from mold groove 9.
[0026] refer to Figures 1 to 2 The lower mold 8 has symmetrical limit holes 11 on its top. The limit pin 10 is inserted into the limit hole 11. When the cylinder 4 is started, the lifting seat 19 drives the upper mold 6 to descend, so that the limit pin 10 is inserted into the limit hole 11.
[0027] refer to Figure 1 The buffer assembly 18 includes a buffer plate 181 and a buffer spring 182. The buffer plate 181 is sleeved on the outside of the support column 2. The buffer plate 181 and the support column 2 are slidably connected. The buffer spring 182 is sleeved on the outside of the support column 2. The two ends of the buffer spring 182 are fixedly connected to the bottom of the buffer plate 181 and the top of the base 1, respectively. When the cylinder 4 is activated and the lifting seat 19 is controlled to drive the upper mold 6 to descend, the lifting seat 19 presses against the buffer plate 181. The buffer plate 181 descends and compresses the buffer spring 182. The buffer spring 182 absorbs and disperses the impact force.
[0028] Operating principle and advantages: First, pull the handle 135 upwards, causing the connecting post 134 to move the moving plate 132 and the fixed post 136. The moving plate 132 presses against the first return spring 133, compressing the first return spring 133. At the same time, the fixed post 136 retracts into the cavity 131, merging the moving base 7 together with the lower mold 8 and the base 1. After pushing the lower mold 8 to the designated position, release the handle 135. The first return spring 133 returns to its original position, and the moving plate 132 rebounds, causing the fixed post 136 to pop out of the fixing hole 14. The electromagnet 177 is activated, causing it to magnetically connect with the magnetic column 175. This causes the magnetic column 175 to lower the ejector plate 174, which in turn lowers the moving column 172, pressing it against the second return spring 173. The second return spring 173 is then compressed. When the molding process is complete, the electromagnet 177 is deactivated, the magnetic connection between the electromagnet 177 and the magnetic column 175 ends, the second return spring 173 resets, and the moving column 172 causes the ejector plate 174 to spring back, ejecting the workpiece from the mold groove 9.
[0029] This invention enables enterprises to respond quickly to changes in market demand, allowing them to change molds in a timely manner according to needs and rapidly adjust the production of different types, specifications, and shapes of plastic products, thereby improving production flexibility. Moreover, the replaceable molds reduce over-reliance on and wear and tear on single molds. When a mold is worn or damaged, it can be directly replaced with a new mold without repeated repairs, saving a significant amount of maintenance costs and time.
Claims
1. A plastic product processing mold, comprising a base, characterized in that: The base is symmetrically fixedly connected to the top of the support column, the top of the support column is fixedly connected to the top of the support column, the top of the top of the support column is mounted with a cylinder, the telescopic end of the cylinder is fixedly connected to a lifting seat, the bottom of the lifting seat is threadedly connected to an installation plate, the bottom of the installation plate is fixedly connected to an upper mold, the top of the base is slidably connected to a movable seat, the top of the movable seat is fixedly connected to a lower mold, the top of the movable seat is symmetrically mounted with limit components, the top of the lower mold has a mold groove, the bottom of the mold groove is installed with a demolding component, and a buffer component is installed on the outside of the support column. The limiting assembly includes a cavity, a movable plate, a first return spring, a connecting post, a handle, and a fixing post. A fixing seat is symmetrically fixedly connected to the top of the movable seat. A cavity is opened inside the fixing seat. A first return spring is fixedly connected to the top of the cavity. A movable plate is fixedly connected to the other end of the first return spring. A connecting post is fixedly connected to the top of the movable plate. A handle is fixedly connected to the other end of the connecting post extending out of the fixing seat. The first return spring is sleeved on the outside of the connecting post. A fixing post is fixedly connected to the other side of the movable plate. The fixing post extends out of the bottom of the movable seat.
2. The plastic product processing and molding mold according to claim 1, characterized in that: The base has symmetrical fixing holes on its top, and the fixing posts are inserted into the fixing holes.
3. The plastic product processing mold according to claim 1, characterized in that: The base has symmetrical T-shaped grooves on its top, and the bottom of the movable seat has symmetrical T-shaped blocks fixedly connected to it. The T-blocks and T-shaped grooves are slidably connected.
4. The plastic product processing mold according to claim 1, characterized in that: The demolding assembly includes an internal hole, a movable column, a second return spring, an ejector plate, a magnetic column, a through hole, and an electromagnet. The bottom of the mold groove has symmetrical internal holes. The bottom of the internal hole is fixedly connected to the second return spring. The other end of the second return spring is fixedly connected to the movable column. The other end of the movable column is fixedly connected to the ejector plate. The center of the bottom of the ejector plate is fixedly connected to the magnetic column. The bottom of the mold groove has a through hole. The magnetic column and the through hole are slidably connected. An electromagnet is installed at the bottom of the lower mold. The electromagnet and the magnetic column are magnetically connected.
5. A plastic product processing mold according to claim 1, characterized in that: The mounting plate is symmetrically fixedly connected to the bottom of the mounting plate, and the lower mold is symmetrically provided with limit holes on the top. The limit posts and limit holes are inserted into each other.
6. A plastic product processing mold according to claim 1, characterized in that: The buffer assembly includes a buffer plate and a buffer spring. The buffer plate is sleeved on the outside of the support column, and the buffer plate is slidably connected to the support column. The buffer spring is sleeved on the outside of the support column, and its two ends are fixedly connected to the bottom of the buffer plate and the top of the base, respectively.