Cooling structure of plastic injection mold

Abstract

The utility model relates to the technical field of injection molds, and discloses a plastic injection mold cooling structure which comprises a mold body, a plurality of cooling cavities are formed in the mold body, and water injection chambers for injecting water into the cooling cavities are fixedly arranged on the two sides of the mold body. A plurality of water outlet pipes communicated with the cooling cavity are fixedly arranged in the water injection chamber, a drainage chamber is fixedly arranged on one side of the water injection chamber, and the water outlet ends of the water outlet pipes are located in the drainage chamber; water can be supplied into the two water injection chambers at the same time through the water supply assembly, the two water injection chambers are located on the two sides of the mold body respectively, water can be supplied into the multiple cooling cavities in different directions, the water flow directions can be staggered, and therefore the mold body can be evenly cooled, and the machining quality of products is improved; and the plurality of cooling cavities can increase the water flow path, so that the cooling speed is increased.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a cooling structure for plastic injection molds. Background Technology

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of injection molding are fast production speed, high efficiency, automated operation, a wide variety of colors and shapes, shapes ranging from simple to complex, sizes ranging from large to small, precise product dimensions, easy product updates and replacements, and the ability to produce complex-shaped parts. After plastic products are injection molded, they often need to be cooled quickly.

[0003] The "Injection Mold Cooling Mechanism" disclosed in application number "202120301532.4" includes: a lower mold; an upper mold; guide pillars, with guide pillars provided on both sides between the lower mold and the upper mold; an injection platform, with an injection platform provided at the top of the lower mold; and an injection block, with an injection block provided at the bottom of the upper mold. This injection mold cooling mechanism can quickly cool the internal parts of the injection mold by injecting cooling water into the inlet, eliminating the need for workers to wait for natural cooling; and then uses a fan for secondary cooling and to remove any remaining cooling water, making it highly practical.

[0004] However, the above method still has the following drawbacks: water can be injected into the cooling channel to cool the mold, but the water flows in one direction, which can easily lead to uneven cooling of plastic products, reduce the processing quality of the products, and make it difficult to clean the scale inside the cooling channel. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a cooling structure for plastic injection molds, which has the advantages of uniform cooling and easy cleaning of scale, thus solving the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a cooling structure for a plastic injection mold, including a mold body, the interior of which is provided with several cooling chambers, and water injection chambers for injecting water into the cooling chambers are fixed on both sides of the mold body. Several water outlet pipes communicating with the cooling chambers are fixed inside the water injection chambers. A drainage chamber is fixed on one side of the water injection chamber, and the water outlet end of the water outlet pipe is located inside the drainage chamber. A water supply component for supplying water to two water injection chambers is provided on one side of the mold body, and a drainage component for draining water from two drainage chambers is provided on the other side of the mold body.

[0007] As a preferred technical solution of this utility model, a positioning frame is fixedly provided on the other side of the water injection chamber, a groove is provided on one side of the positioning frame, a rubber pad is engaged and connected inside the groove, and one side of the positioning frame is fixedly connected to the mold body.

[0008] As a preferred embodiment of the present invention, the water supply component includes a water supply pipe, a water supply connector is fixedly connected to the middle of the water supply pipe, and elbows are connected to both ends of the water supply pipe. A diversion pipe communicating with the interior of the water injection chamber is fixedly connected to the outlet end of the elbow.

[0009] As a preferred embodiment of this utility model, water inlets are provided on both sides of the water injection chamber, and the outlet end of the diversion pipe is fixedly connected to one side of the water inlet.

[0010] As a preferred embodiment of this utility model, a retaining ring is fixedly provided on one side of the water outlet pipe, and a rubber ring is provided on one side of the retaining ring. The rubber ring is sleeved with one side of the water outlet pipe, and the water inlet end of the water outlet pipe is located inside the cooling chamber.

[0011] As a preferred embodiment of the present invention, the drainage component includes a drainage pipe, a drainage connector is fixedly connected to the middle of the drainage pipe, and elbows are connected to both ends of the drainage pipe. The inlet end of the elbow is fixedly connected to a manifold that communicates with the interior of the drainage chamber.

[0012] As a preferred embodiment of this utility model, drainage outlets are provided on both sides of the drainage chamber, and the inlet end of the manifold is fixedly connected to one side of the drainage outlet.

[0013] As a preferred technical solution of this utility model, positioning plates are fixedly provided on the bottom of both sides of the mold body, and two positioning holes are opened on the surface of the positioning plates. Ribs are welded to both sides of the top of the positioning plates.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The water supply assembly can supply water to the two water injection chambers simultaneously. Since the two water injection chambers are located on both sides of the mold body, water can be supplied to several cooling chambers in different directions, which can make the water flow directions intersect, thereby making the mold body cool evenly, improving the processing quality of the product. In addition, the number of cooling chambers can increase the water flow path and improve the cooling speed.

[0016] 2. The drainage assembly can connect two drainage chambers, and the water inside the drainage chambers can flow into the drainage assembly for centralized discharge. By disassembling the water injection chamber, it is easy to clean the scale inside the cooling cavity, thus avoiding the phenomenon that excessive scale can hinder temperature transfer. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0019] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 4 This is a schematic diagram of the water injection chamber of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the water injection chamber of this utility model.

[0022] In the diagram: 1. Mold body; 2. Cooling chamber; 3. Water injection chamber; 4. Positioning frame; 5. Groove; 6. Rubber pad; 7. Water outlet pipe; 8. Retaining ring; 9. Rubber ring; 10. Water injection port; 11. Drainage chamber; 12. Drainage outlet; 13. Water supply assembly; 1301. Water supply pipe; 1302. Water supply connector; 1303. Elbow 1; 1304. Diverter pipe; 14. Drainage assembly; 1401. Drainage pipe; 1402. Drainage connector; 1403. Elbow 2; 1404. Manifold; 15. Positioning plate; 16. Rib plate; 17. Positioning hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0024] Please see Figures 1-5A cooling structure for a plastic injection mold includes a mold body 1. The mold body 1 has several cooling chambers 2 inside. Water injection chambers 3 are fixed on both sides of the mold body 1 to inject water into the cooling chambers 2. Several water outlet pipes 7 connected to the cooling chambers 2 are fixed inside the water injection chambers 3. A drain chamber 11 is fixed on one side of the water injection chamber 3. The water outlet end of the water outlet pipe 7 is located inside the drain chamber 11. A water supply component 13 is provided on one side of the mold body 1 to supply water to the two water injection chambers 3. Water can be supplied to the two water injection chambers 3 at the same time through the water supply component 13. Since the two water injection chambers 3 are located on the two sides of the mold body 1 respectively, water can be supplied to the several cooling chambers 2 in different directions, so that the water flow direction can be staggered, thereby enabling the mold body 1 to be cooled evenly. The several cooling chambers 2 can increase the water flow path and improve the cooling speed. A drain component 14 is provided on the other side of the mold body 1 to drain water from the two drain chambers 11.

[0025] In this embodiment, preferably, the water supply component 13 includes a water supply pipe 1301, a water supply connector 1302 fixedly connected to the middle of the water supply pipe 1301, and elbows 1303 connected to both ends of the water supply pipe 1301. A diversion pipe 1304 communicating with the inside of the water injection chamber 3 is fixedly connected to the outlet end of the elbow 1303. Water inlets 10 are opened on both sides of the water injection chamber 3. The outlet end of the diversion pipe 1304 is fixedly connected to one side of the water inlet 10. The diversion pipe 1304 can be connected to both ends of the water supply pipe 1301 through the elbow 1303. The water supply pipe 1301 can supply water to the two water injection chambers 3 respectively through the two diversion pipes 1304, so that the water flow direction is staggered.

[0026] In this embodiment, preferably, the drainage component 14 includes a drainage pipe 1401, a drainage connector 1402 fixedly connected to the middle of the drainage pipe 1401, and elbows 1403 connected to both ends of the drainage pipe 1401. The inlet end of the elbow 1403 is fixedly connected to a manifold 1404 that communicates with the inside of the drainage chamber 11. Drainage outlets 12 are provided on both sides of the drainage chamber 11. The inlet end of the manifold 1404 is fixedly connected to one side of the drainage outlet 12. The manifold 1404 and the drainage pipe 1401 can be connected through the elbow 1403. Water from the two drainage chambers 11 can enter the drainage pipe 1401 through the manifold 1404. The drainage pipe 1401 can discharge water in a concentrated manner.

[0027] In this embodiment, preferably, a positioning frame 4 is fixedly provided on the other side of the water injection chamber 3. The water injection chamber 3 can be fixedly installed through the positioning frame 4. A groove 5 is provided on one side of the positioning frame 4. A rubber pad 6 is engaged and connected inside the groove 5. The groove 5 can limit the rubber pad 6 and the rubber pad 6 can seal the positioning frame 4. One side of the positioning frame 4 is fixedly connected to the mold body 1 by screws. Positioning plates 15 are fixedly provided on the bottom of both sides of the mold body 1. Two positioning holes 17 are provided on the surface of the positioning plate 15. Ribs 16 are welded on both sides of the top of the positioning plate 15. The mold body 1 can be fixedly installed through the positioning holes 17 of the positioning plate 15.

[0028] In this embodiment, preferably, a retaining ring 8 is fixedly provided on one side of the water outlet pipe 7, and a rubber ring 9 is provided on one side of the retaining ring 8. The rubber ring 9 is sleeved with one side of the water outlet pipe 7, and the water inlet end of the water outlet pipe 7 is located inside the cooling chamber 2. By inserting the water inlet end of the water outlet end into the cooling chamber 2, the retaining ring 8 can limit the rubber ring 9, and the rubber ring 9 can seal the water outlet pipe 7 and the cooling chamber 2.

[0029] In use, after the plastic product is injection molded by the mold body 1, cold water is input through the water supply pipe 1301 of the water supply component 13. The cold water can be supplied to the two water injection chambers 3 through two branch pipes 1304 respectively. The water flows into the cooling chamber 2 in different directions, which can make the plastic product cool evenly and ensure the processing quality of the product. The simultaneous supply of cold water to several cooling chambers 2 can increase the water flow rate and improve the cooling speed of the product.

[0030] After passing through the cooling chamber 2, the cold water can carry away the heat and reach the interior of the two drainage chambers 11 through the outlet pipe 7. The water inside the two drainage chambers 11 can enter the drainage pipe 1401 through the manifold 1404 of the drainage assembly 14. The drainage pipe 1401 can discharge the water in a concentrated manner, which facilitates the circulation of the water. During this process, the rubber pad 6 can seal the positioning frame 4, and the rubber ring 9 can seal the outlet pipe 7 and the cooling chamber 2 to prevent water leakage.

[0031] When it is necessary to clean the scale inside the cooling chamber 2, the operator can use the bolts on the positioning frame 4 to remove the water injection chamber 3 from both sides of the mold body 1, so that both ends of the cooling chamber 2 can be exposed to the outside, and the scale inside the cooling chamber 2 can be cleaned, avoiding the phenomenon that excessive scale will hinder the transfer of temperature.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cooling structure for a plastic injection mold, comprising a mold body (1), characterized in that: The mold body (1) has several cooling chambers (2) inside. Both sides of the mold body (1) are fixed with water injection chambers (3) for injecting water into the cooling chambers (2). Several water outlet pipes (7) communicating with the cooling chambers (2) are fixed inside the water injection chambers (3). A drainage chamber (11) is fixed on one side of the water injection chamber (3). The water outlet end of the water outlet pipe (7) is located inside the drainage chamber (11). A water supply component (13) for supplying water to the two water injection chambers (3) is provided on one side of the mold body (1). A drainage component (14) for draining water from the two drainage chambers (11) is provided on the other side of the mold body (1).

2. The cooling structure for plastic injection molds according to claim 1, characterized in that: A positioning frame (4) is fixedly provided on the other side of the water injection chamber (3). A groove (5) is provided on one side of the positioning frame (4). A rubber pad (6) is engaged inside the groove (5). One side of the positioning frame (4) is fixedly connected to the mold body (1).

3. The cooling structure for plastic injection molds according to claim 1, characterized in that: The water supply component (13) includes a water supply pipe (1301), a water supply connector (1302) is fixedly connected to the middle of the water supply pipe (1301), and elbows (1303) are connected to both ends of the water supply pipe (1301). A diversion pipe (1304) communicating with the inside of the water injection chamber (3) is fixedly connected to the outlet end of the elbow (1303).

4. The cooling structure for plastic injection molds according to claim 3, characterized in that: Water inlets (10) are provided on both sides of the water injection chamber (3), and the outlet end of the diversion pipe (1304) is fixedly connected to one side of the water inlet (10).

5. The cooling structure for a plastic injection mold according to claim 1, characterized in that: A retaining ring (8) is fixedly provided on one side of the water outlet pipe (7), and a rubber ring (9) is provided on one side of the retaining ring (8). The rubber ring (9) is sleeved with one side of the water outlet pipe (7), and the water inlet end of the water outlet pipe (7) is located inside the cooling chamber (2).

6. The cooling structure for a plastic injection mold according to claim 1, characterized in that: The drainage assembly (14) includes a drain pipe (1401), a drain connector (1402) is fixedly connected to the middle of the drain pipe (1401), and elbows (1403) are connected to both ends of the drain pipe (1401). The inlet end of the elbow (1403) is fixedly connected to a manifold (1404) that communicates with the inside of the drainage chamber (11).

7. The cooling structure for a plastic injection mold according to claim 6, characterized in that: The drainage chamber (11) has drainage outlets (12) on both sides, and the inlet end of the manifold (1404) is fixedly connected to one side of the drainage outlet (12).

8. The cooling structure for a plastic injection mold according to claim 1, characterized in that: The bottom of both sides of the mold body (1) is fixedly provided with positioning plates (15), and the surface of the positioning plates (15) has two positioning holes (17). The top two sides of the positioning plates (15) are welded with reinforcing plates (16).

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