Intermediate plate

Abstract

A middle plate relates to the technical field of plastic thermal forming and comprises a flat-plate-shaped object matched with a mold for producing plastic particles with rods, a plurality of through holes are formed in the flat-plate-shaped object, and the distribution positions of the through holes formed in the flat-plate-shaped object are matched with the distribution positions of holes formed in the mold for producing the plastic particles with the rods. Compared with the prior art, the utility model has the advantages that the production efficiency and the product quality can be obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic thermoforming technology, and in particular to an intermediate plate. Background Technology

[0002] Plastic pellets with rods, such as threaded rods used as electrodes, consist of conductive screws and conductive silicone wrapped around them. Existing production technology involves first placing the rod into a blind hole in a lower mold, then placing a block of conductive silicone raw material mixed with a crosslinking agent on top of the rod. Next, an upper mold is placed on top of the lower mold, with the molding recess on the upper mold aligned with the conductive silicone block on the rod. While heating the conductive silicone block, the lower and upper molds are gradually closed. The hot-melt conductive silicone wraps around the rod and fills the molding recess, completing the molding process. Simultaneously, the crosslinking agent reacts with the silicone raw material. After molding, the lower and upper molds are separated, thus completing the manufacturing of the plastic pellet with the rod. In this technology, before the plastic pellets with rods are formed, the rods must first be placed into blind holes on the lower mold before the next step of producing the plastic pellets with rods can proceed. However, placing the rods into the blind holes takes time, thus affecting the production efficiency of the equipment. The lower mold is fixed to the production equipment below the upper mold. To improve production efficiency, the lower mold has several blind holes arranged in several rows. Completing the rod placement takes time, and interference from the upper mold and the production equipment also affects the rod placement process, prolonging the time. Since the next step of producing plastic pellets with rods can only proceed after the rods are properly placed, to achieve maximum production efficiency and maintain a suitable mold temperature to ensure stable molding processes and product quality, the number of blind holes on the lower mold is limited. This ensures that the rod placement speed matches the production volume of each batch of plastic pellets with rods, achieving optimal efficiency. To achieve optimal production efficiency, it's impossible to increase production efficiency by simply increasing the production volume of plastic pellets with rods per batch. To expedite placement and ensure accurate rod placement, the inner diameter of the blind hole is often much larger than the outer diameter of the rod. This prevents the rod from being placed vertically within the blind hole, resulting in non-perpendicular rods in the molded plastic pellets. The larger blind hole also increases the likelihood of the molded plastic pellets detaching from it. Consequently, some pellets will remain on the upper mold while others remain on the lower mold, increasing the difficulty and workload of removing the pellets and impacting production efficiency. Furthermore, the larger blind hole allows the conductive silicone from the hot-melt casting process to easily enter and adhere to the rod, creating excess residue on the plastic pellets that requires subsequent cleaning, further increasing workload and affecting production efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a rod-type intermediate plate that can overcome one or more of the above-mentioned disadvantages and significantly improve production efficiency and product quality.

[0004] The intermediate plate of this utility model is implemented as follows: it includes a flat plate that matches the mold for producing plastic pellets with rods. The flat plate has several through holes, and the distribution of the through holes on the flat plate matches the distribution of the holes for producing plastic pellets with rods on the mold.

[0005] In use, first insert the rod into the through hole on the middle plate of the utility model, then place the middle plate on the lower mold of the mold, so that the through hole on the middle plate is aligned with the blind hole on the lower mold, so that the rod on the middle plate is inserted into the blind hole on the lower mold. Place a plastic block on the rod on the middle plate, then cover the upper mold on the lower mold, so that the forming notch on the upper mold is aligned with the plastic block on the rod. While heating the plastic block, the lower mold and the upper mold close. After forming, open the mold and take out the formed product, thus completing the production of plastic pellets with rods.

[0006] Because a movable intermediate plate with through holes that match the blind holes on the lower mold is used, the rod placement work can be carried out in an environment away from the plastic pellet production unit without external interference. This ensures that the continuous production of plastic pellets with rods is not affected. Furthermore, the rod placement is unaffected by external interference, so even if the diameter of the through hole is approximately the same as the rod diameter, it will not significantly affect the rod placement. Simultaneously, the verticality of the rod is guaranteed, thus ensuring product quality. Moreover, the rod can be guided through an openable flared opening to accelerate its introduction. Since the rod placement is performed outside the plastic pellet production unit, the number of blind holes on the lower mold can be maximized, increasing the production quantity of plastic pellets with rods per batch and significantly improving the production efficiency. The intermediate plate, with its through holes matching the rod diameter, ensures that even after molding, the hot-melt cast plastic can pass through the through holes... The material seeps into the blind hole and adheres to the rod, making it easy to remove these excess materials through the intermediate plate. This also enhances the adhesion of the plastic granules with rods to the intermediate plate. Thus, after mold opening, the formed plastic granules with rods will not adhere to the upper mold; all formed plastic granules with rods will adhere to the intermediate plate. This allows for the removal of all plastic granules with rods when the intermediate plate is removed, enabling the plastic granule production unit to quickly resume production of the next batch of plastic granules with rods, significantly improving production efficiency. Furthermore, the use of an intermediate plate, with all formed plastic granules with rods adhering to it, facilitates subsequent removal of excess material. For example, using a sleeve structure with a diameter matching the outer diameter of the plastic granules with rods, pressing the plastic granules with rods on the intermediate plate into the holes of the sleeve structure, not only significantly improves the efficiency of removing excess material but also significantly saves manpower.

[0007] Preferably, the lower end of the through hole of the flat plate is funnel-shaped. In this way, after molding in the mold, a conical excess at the root of the rod and the excess that has seeped into the rod are connected together. When cleaning the excess, by detaching the plastic granule with the rod from the intermediate plate, the conical excess is cleaned out at the same time, and the excess on the rod (inside the threads) is also cleaned out, thereby accelerating the cleaning of excess and improving production efficiency.

[0008] Preferably, the flat plate has positioning wings on both sides. These wings allow for quick and accurate positioning of the intermediate plate on the lower mold, ensuring the through hole aligns perfectly with the blind hole on the lower mold. Since the diameter of the through hole matches the screw diameter, the rod inserted into the through hole is vertical. Once the through hole is precisely aligned with the blind hole on the lower mold, the rod will automatically slide into the blind hole under gravity.

[0009] Preferably, handles are attached to the wings on both sides of the flat plate to facilitate the operator's operation of the middle plate.

[0010] Preferably, the wing is provided with positioning perforations. These perforations allow the plastic block guide tool to be accurately positioned on the intermediate plate via the positioning post, enabling the plastic block to be quickly and accurately placed onto the rod on the intermediate plate by the tool.

[0011] Compared with existing technologies, this invention has the advantages of significantly improving the production efficiency and product quality of plastic pellets with rods, while saving manpower. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the back of the middle plate;

[0014] Figure 3 This is a schematic diagram of the present invention in conjunction with a plastic block feeding tool;

[0015] Figure 4 This is a flowchart of the production process for plastic pellets with rods.

[0016] Explanation of reference numerals in the attached drawings: 1. Rod; 101. Flat head; 2. Plastic pellet; 3. Mold; 301. Lower mold; 302. Notch; 303. Upper mold; 304. Forming notch; 4. Flat plate; 5. Through hole; 6. Hole; 7. Lower port; 8. Wing; 9. Hand handle; 10. Positioning perforation; 11. Plastic block guide tool; 12. Positioning post; 13. Plastic block. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0018] like Figure 1 , 2 As shown in Figure 3, the intermediate plate of this utility model includes a flat plate 4 that matches the mold 3 for producing plastic pellets 2 of the rod 1. The flat plate 4 is provided with several through holes 5. The distribution position of the through holes 5 on the flat plate 1 matches the distribution position of the holes 6 on the mold 3 for producing plastic pellets 2 of the rod 1.

[0019] Preferably, the lower port 7 of the through hole 5 of the flat plate 4 is funnel-shaped.

[0020] Preferably, the material of the flat plate 4 is metal (such as steel, aluminum alloy, copper), and the thickness of the flat plate 4 plus the depth of the hole 6 (blind hole) on the lower mold 301 of the mold 3 is equal to the length of the part of the rod 1 of the plastic pellet 2 that protrudes outside the plastic pellet 2.

[0021] Preferably, the flat plate 4 is provided with positioning wings 8 on both sides for positioning on the recesses 302 of the lower mold 301.

[0022] Preferably, handles 9 are connected to the wings 8 on both sides of the flat plate 4.

[0023] Preferably, the wing 8 is provided with a positioning perforation 10 so that the plastic block guide tool 11 can be accurately positioned on the middle plate of this utility model through the positioning post 12.

[0024] like Figure 4 As shown, when producing plastic pellets with rods, the rod (a screw with a flat head 101) 1 is first inserted into the through hole 5 on the flat plate 4. Then, the flat plate 4 is placed on the lower mold 301. By inserting the wing 8 into the recess 302 of the lower mold 301, the flat plate 4 is accurately positioned within the lower mold 301, with the through hole 5 on the flat plate 4 aligned with the hole 6 on the lower mold 301. This allows the rod 1 on the flat plate 4 to be inserted into the hole 6 on the lower mold 301. Several plastic blocks (silicone raw material blocks mixed with crosslinking agent) 13 are placed in the plastic block inlet tool 11. Through the positioning through hole 10 and the positioning post 12 of the plastic block inlet tool 11, the plastic block inlet tool 11 is accurately positioned on the flat plate 4. Then, several plastic blocks 13 are simultaneously placed on the flat ends 101 of the corresponding rows of rods 1 on the flat plate 4. The plastic blocks 13 are stably positioned by the upper surface of the flat ends 101. The upper mold 303 and the lower mold 301 are simultaneously sent into the heating device and the upper mold 303 and the lower mold 301 are closed. The plastic blocks are heated by the heating device, so that the plastic blocks melt and flow and fill the forming recess 304 of the upper mold 303. A chemical reaction (cross-linking reaction) takes place during the heating process. After molding, the upper mold 303 and the lower mold 301 are removed from the heating device and the mold is opened. The intermediate plate of this utility model with the molded product (plastic pellets 2 with rods 1) attached is taken out from the lower mold 301, thereby completing the production of the product.

Claims

1. An intermediate plate, characterized in that, It includes a flat plate that matches the mold for producing plastic pellets with rods. The flat plate has several through holes, and the distribution of the through holes on the flat plate matches the distribution of the holes on the mold for producing plastic pellets with rods.

2. The intermediate plate according to claim 1, characterized in that, The lower end of the through hole in the flat plate is funnel-shaped.

3. The intermediate plate according to claim 1 or 2, characterized in that, The flat plate has positioning wings on both sides.

4. The intermediate plate according to claim 3, characterized in that, Handles are attached to the wings on both sides of the flat plate.

5. The intermediate plate according to claim 3, characterized in that, Positioning perforations are provided on the wings.

6. The intermediate plate according to claim 4, characterized in that, Positioning perforations are provided on the wings.

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