Facial cream pump injection mold not prone to shrinkage deformation

Abstract

The utility model discloses a face cream pump injection mold not easy to shrink and deform, which belongs to the field of face cream pump injection molds and comprises a face cream pump injection molding machine body. A front mold core and a rear mold core are assembled on the face cream pump injection molding machine body; the front mold core and the rear mold core are oppositely arranged; and cooling water path assemblies are arranged in the front mold core and the rear mold core. According to the face cream pump injection mold not prone to shrinkage deformation, heat in the front mold core and the rear mold core can be taken away through the arranged cooling water way assembly, and therefore a face cream pump injection product can be rapidly cooled and solidified; compared with a traditional single-water-channel heat dissipation mode, in the actual production application of the injection mold, the multiple cooling water channel pipes are arranged in the front mold core and the rear mold core in a staggered mode, and therefore more uniform heat dissipation treatment is conducted on the face cream pump injection molding part through the cooling water channel assembly; and the problems of inconsistent product shrinkage, deformation, warping and the like caused by non-uniform temperature are reduced.

Description

Technical Field

[0001] The utility model belongs to the field of injection molds for cream pumps, and particularly relates to an injection mold for cream pumps that is not prone to shrinkage and deformation. Background Art

[0002] Cream pumps are usually used in cosmetic packaging. It is a device that can pump liquid or semi-solid products (such as cream, lotion, etc.) out of the container. The plastic mold in the cream pump (also called an injection mold) is a mold used to manufacture cream pump parts; through the injection process, the injection mold injects the heated and melted plastic into the mold cavity, and then after cooling and solidifying, the formed cream pump parts are taken out.

[0003] When the traditional injection mold for cream pump injection parts is used for injection molding of cream pump injection parts, a single water channel is usually set inside the injection mold to cool the cream pump injection parts. However, this cooling method will cause uneven temperature distribution inside the mold during actual use, resulting in some parts having too high a temperature while some parts having too low a temperature. This uneven temperature will cause the solidification speed and shrinkage speed of the plastic to be inconsistent during the injection molding process, thereby causing internal stress in the injection parts during the cooling process, which in turn causes deformation. Therefore, an injection mold for cream pumps that is not prone to shrinkage and deformation is proposed to solve the problems of the traditional injection mold for cream pumps. Summary of the Utility Model

[0004] In view of one or more of the above-mentioned defects or improvement requirements in the prior art, the utility model provides an injection mold for cream pumps that is not prone to shrinkage and deformation, which has the advantages of cooling and dissipating heat for the cream pump by arranging a circulating pipeline in the upper and lower distribution, and the cream pump injection parts are not prone to shrinkage and deformation.

[0005] To achieve the above object, the utility model provides an injection mold for cream pumps that is not prone to shrinkage and deformation, including the main body of a cream pump injection molding machine; a front mold core and a rear mold core are assembled and provided on the main body of the cream pump injection molding machine;

[0006] The front mold core and the rear mold core are arranged opposite to each other;

[0007] Cooling water channel components are arranged inside both the front mold core and the rear mold core;

[0008] A number of injection molds for cream pump injection parts are assembled between the front mold core and the rear mold core, and a cavity for injection molding is formed inside the injection molds for cream pump injection parts;

[0009] The cooling water channel component includes a number of connected cooling water channel pipes, the cooling water channel pipes are arranged in a staggered manner and are respectively assembled inside the front mold core and the rear mold core, and a number of the cooling water channel pipes are arranged around the injection molds for cream pump injection parts.

[0010] As a further improvement of the present utility model, a rubber mouth sleeve is communicatively provided on the body of the cream pump injection molding machine. The rubber mouth sleeve extends and is communicatively connected with the front mold core. The rubber mouth sleeve is used for allowing molten plastic to flow into the front mold core. A plurality of water injection ports are communicatively provided on the front mold core and the rear mold core.

[0011] As a further improvement of the present utility model, both ends of a plurality of the cooling water channel pipes are respectively communicatively provided with a water inlet pipeline and a water outlet pipeline. The water inlet pipeline and the water outlet pipeline are assembled on the front mold core and the rear mold core and extend to the outside of the rubber mouth sleeve.

[0012] As a further improvement of the present utility model, a stripping push block is slidably assembled in the rear mold core. The stripping push block is sleeved outside the cream pump injection molding part mold.

[0013] As a further improvement of the present utility model, a thimble plate is assembled on the body of the cream pump injection molding machine. A plurality of stripping push rods are vertically arranged on the thimble plate. The end of the stripping push rod vertically extends and penetrates through the rear mold core until it abuts against the bottom of the stripping push block.

[0014] Generally speaking, compared with the prior art through the above technical solutions conceived by the present utility model, the beneficial effects include:

[0015] For the cream pump injection mold of the present utility model that is not prone to shrinkage and deformation, during the injection molding process, through the provided cooling water channel assembly and the formed cooling water channel pipes, the circulation of cooling water can be realized, so as to uniformly cool the cavities in the front mold core and the rear mold core. Through the provided cooling water channel assembly, the heat in the front mold core and the rear mold core can be taken away, so that the cream pump injection molded product can be quickly cooled and solidified. Compared with the traditional single water channel heat dissipation method, in the actual production application of the injection mold of the present application, by staggeredly arranging multiple cooling water channel pipes in the front mold core and the rear mold core, more uniform heat dissipation treatment of the cream pump injection molding part can be realized by using the cooling water channel assembly. This helps to avoid local overheating or overcooling of the cream pump injection molding part, thereby reducing problems such as inconsistent product shrinkage, deformation and warping caused by uneven temperature. And uniform heat dissipation helps to reduce the internal stress of the cream pump product, make the product more stable, and improve the quality and consistency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall installation structure of the body of the cream pump injection molding machine of the present utility model;

[0017] Figure 2 It is a schematic diagram of the installation structure of the front and rear mold cores of the present utility model on the body of the cream pump injection molding machine;

[0018] Figure 3 It is a schematic diagram of the distribution structure of the cooling water channel of the present utility model on the body of the cream pump injection molding machine;

[0019] Figure 4 This is a schematic diagram of the separation structure of the front and rear mold cores of the present utility model.

[0020] In all the drawings, the same reference numerals represent the same technical features, specifically: 10, the body of the cream pump injection molding machine; 1, the nozzle sleeve; 2, the front mold core; 21, the water injection port; 3, the rear mold core; 4, the stripping push block; 5, the cooling water channel assembly; 51, the cooling water channel pipe; 52, the water inlet pipe; 53, the water outlet pipe; 6, the stripping push rod; 7, the ejector plate; 8, the cream pump injection molding part mold. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment

[0023] Provided by Figures 1-4 There is a cream pump injection mold that is not easily shrunk and deformed, including the body 10 of the cream pump injection molding machine; the front mold core 2 and the rear mold core 3 are assembled on the body 10 of the cream pump injection molding machine;

[0024] The front mold core 2 and the rear mold core 3 are arranged opposite to each other;

[0025] Cooling water channel assemblies 5 are arranged in both the front mold core 2 and the rear mold core 3;

[0026] A number of cream pump injection molding part molds 8 are assembled between the front mold core 2 and the rear mold core 3, and a cavity for injection molding is formed in the cream pump injection molding part mold 8;

[0027] The cooling water channel assembly 5 includes a number of cooling water channel pipes 51 that are connected in series. The cooling water channel pipes 51 are arranged in a staggered manner and are respectively assembled in the front mold core 2 and the rear mold core 3. The number of cooling water channel pipes 51 surrounds the cream pump injection molding part mold 8.

[0028] In this embodiment, during the injection molding process, through the provided cooling water channel assembly 5 and the formed cooling water channel pipe 51, the circulation of cooling water can be realized, so as to uniformly cool the cavities in the front mold core 2 and the rear mold core 3. The heat in the front mold core 2 and the rear mold core 3 can be taken away by the provided cooling water channel assembly 5, so that the cream pump injection molded product can be quickly cooled and solidified. Compared with the traditional single-channel heat dissipation method, in the actual production application of the injection mold of the present application, by arranging multiple cooling water channel pipes 51 staggered in the front mold core 2 and the rear mold core 3, more uniform heat dissipation treatment of the cream pump injection molded part can be realized by using the cooling water channel assembly 5. This helps to avoid the local temperature of the cream pump injection molded part being too high or too low, and thus reduces problems such as inconsistent product shrinkage, deformation and warping caused by uneven temperature. And uniform heat dissipation helps to reduce the internal stress of the cream pump product, make the product more stable, and improve the quality and consistency of the product.

[0029] Specifically, referring to Figures 1-2 、 Figure 4 , a nozzle sleeve 1 is connected and arranged on the cream pump injection molding machine body 10. The nozzle sleeve 1 extends and is connected to the front mold core 2. The nozzle sleeve 1 is used for allowing the molten plastic to flow into the front mold core 2; a plurality of water injection ports 21 are connected and arranged on the front mold core 2 and the rear mold core 3;

[0030] In this embodiment, in actual use, the provided water injection port 21 can be used for the cooling water channel pipe 51 to pass through, so as to realize the distributed assembly of the cooling water channel pipe 51 in the front mold core 2 and the rear mold core 3. When the cooling water enters the front mold core 2 and the rear mold core 3 through the cooling water channel pipe 51, at this time, the cooling water can surround the front mold core 2 and the rear mold core 3, so as to take away the heat and realize the heat dissipation treatment of the cream pump injection molded part in the front mold core 2 and the rear mold core 3.

[0031] Specifically, referring to the appendix Figure 3 , a docking shell adapted to the lower end of the nozzle sleeve 1 is provided in the rear mold core 3. The docking shell is connected to the cavity in the cream pump injection molded part mold 8 through a diversion channel;

[0032] Furthermore, the provided nozzle sleeve 1 is used to guide the molten plastic into the cavity. At the same time, with the pressurized push of the molten plastic by the cream pump injection molding machine body 10, the molten plastic can enter the cavity through the nozzle sleeve 1, the docking shell and the diversion channel; through the enclosure of the cavity by the provided front mold core 2 and the rear mold core 3, the injection molding operation of the molten plastic is realized.

[0033] Specifically, referring to Figure 3 , both ends of a plurality of cooling water channel pipes 51 are respectively connected and provided with a water inlet pipe 52 and a water outlet pipe 53. The water inlet pipe 52 and the water outlet pipe 53 are assembled on the front mold core 2 and the rear mold core 3 and extend to the outside of the nozzle sleeve 1.

[0034] In this embodiment, the provided water inlet pipeline 52 and water outlet pipeline 53 can be used to supply cold water to circulate within the cooling water pipeline 51, thereby achieving circulating heat dissipation within the front mold core 2 and the rear mold core 3.

[0035] Specifically, referring to Figures 3-4 , a stripping push block 4 is slidably assembled within the rear mold core 3, and the stripping push block 4 is sleeved outside the cream pump injection mold 8.

[0036] In this embodiment, the provided stripping push block 4 can be used to perform the stripping process on the cream pump injection molded part. In a preferred embodiment, as shown in Embodiment Figure 4 , the provided cream pump injection mold 8 includes an upper mold and a lower mold. The middle part of the lower mold is hollow and several rib grooves are provided on the outside. The middle part of the upper mold is hollow and the inner shape is adapted to the upper part of the lower mold. An upper abutting rod fixedly connected to the front mold core 2 is provided in the hollow part of the upper mold, and a lower abutting rod fixedly connected to the rear mold core 3 is provided in the hollow part of the lower mold. When the front mold core 2 and the rear mold core 3 are abutted and closed, the upper abutting rod and the lower abutting rod are abutted and the upper mold and the lower mold are closed to form a cavity. Several groups of cream pump injection molds 8 are integrally arranged in a rectangular distribution; at the same time, in the demolding stage, in order for the stripping push block 4 to better strip the injection molded part outside the cream pump injection mold 8, several notches adapted to the cream pump injection mold 8 are provided on the stripping push block 4 in a preferred design.

[0037] It should be further noted that in actual use, considering that the stripping push block 4 will generate upward and downward movements during the demolding operation, in a preferred embodiment, as shown in Embodiment Figure 3 , several provided cooling water pipelines 51 are arranged in a frame-like manner in the rear mold core 3 and the front mold core 2, and they are arranged in a staggered manner with the stripping push block 4. The staggered arrangement helps to avoid interference between the cooling water pipeline 51 and the mold or the workpiece during the demolding process, thereby ensuring that the design of the cooling water pipeline 51 will not affect the demolding process of the mold or the surface quality of the workpiece.

[0038] Specifically, referring to Figures 2-3 , a thimble plate 7 is assembled on the cream pump injection machine body 10, and several stripping push rods 6 are vertically arranged on the thimble plate 7; the end of the stripping push rod 6 extends vertically and penetrates through the rear mold core 3 until it abuts against the bottom of the stripping push block 4.

[0039] In this embodiment, during the actual injection molding operation, the user drives the cream pump injection machine body 10 to make it push the thimble plate 7 to move. The provided thimble plate 7 then pushes the stripping push rod 6 and drives the stripping push block 4 to move synchronously via the stripping push rod 6, and finally uses the stripping push block 4 to perform the stripping action on the cream pump injection molded part.

[0040] The injection mold for a cream pump that is not easily shrunk and deformed according to the present utility model:

[0041] The first step: In actual injection molding, the sprue bushing 1 is provided to guide the molten plastic into the cavity. At the same time, with the cooperation of the cream pump injection molding machine body 10 to pressurize and push the molten plastic, the molten plastic can enter the cavity through the sprue bushing 1; subsequently, the cavity is closed by the front mold core 2 and the rear mold core 3 provided, thereby realizing the injection molding operation of the molten plastic;

[0042] The second step: During the injection molding process, through the cooling water circuit assembly 5 provided and the cooling water circuit pipe 51 formed thereby, the circulation of the cooling water can be realized, so as to uniformly cool the cavity in the front mold core 2 and the rear mold core 3. The heat in the front mold core 2 and the rear mold core 3 can be taken away by the cooling water circuit assembly 5 provided, so that the cream pump injection molded product can be quickly cooled and solidified;

[0043] The third step: When the cream pump injection molded part is cooled and solidified, at this time, the user opens the front mold core 2 and the rear mold core 3 to expose the cavity. Subsequently, the user drives the cream pump injection molding machine body 10 to make it push the ejector plate 7 to move. The ejector plate 7 provided then pushes the stripping push rod 6 and drives the stripping push block 4 to move synchronously through the stripping push rod 6. Finally, the stripping push block 4 is used to perform the stripping action on the cream pump injection molded part.

[0044] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An injection mold for a cream pump that is not easily shrunk or deformed, characterized in that ； It includes a cream pump injection molding machine body (10); a front mold core (2) and a rear mold core (3) are assembled and provided on the cream pump injection molding machine body (10); The front mold core (2) and the rear mold core (3) are arranged oppositely; Cooling water channel assemblies (5) are arranged in both the front mold core (2) and the rear mold core (3); A number of cream pump injection molding part molds (8) are assembled between the front mold core (2) and the rear mold core (3), and a cavity for injection molding is formed in the cream pump injection molding part mold (8); The cooling water channel assembly (5) includes a number of interconnected cooling water channel pipes (51), the cooling water channel pipes (51) are arranged in a staggered manner and are respectively assembled in the front mold core (2) and the rear mold core (3), and a number of the cooling water channel pipes (51) are arranged around the cream pump injection molding part mold (8).

2. The injection mold for a cream pump that is not easily shrunk or deformed according to claim 1, wherein A sprue bushing (1) is connected and arranged on the cream pump injection molding machine body (10), the sprue bushing (1) extends and is connected to the front mold core (2), and the sprue bushing (1) is used for allowing molten plastic to flow into the front mold core (2); a number of water injection ports (21) are connected and provided on the front mold core (2) and the rear mold core (3).

3. The injection mold for a cream pump that is not easily shrunk and deformed according to claim 1, wherein Both ends of a number of the cooling water channel pipes (51) are respectively connected and provided with a water inlet pipe (52) and a water outlet pipe (53), the water inlet pipe (52) and the water outlet pipe (53) are assembled on the front mold core (2) and the rear mold core (3) and extend to the outside of the sprue bushing (1).

4. The injection mold for a cream pump that is not easily shrunk or deformed according to claim 1, characterized in that A stripping push block (4) is slidably assembled in the rear mold core (3), and the stripping push block (4) is sleeved outside the cream pump injection molding part mold (8).

5. The injection mold for a cream pump that is not easily shrunk and deformed according to claim 4, characterized in that, A ejector plate (7) is assembled on the cream pump injection molding machine body (10), and a number of stripping push rods (6) are vertically arranged on the ejector plate (7); the end of the stripping push rod (6) vertically extends and penetrates through the rear mold core (3) until it abuts against the bottom of the stripping push block (4).

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