Pump head cap injection mold

Abstract

The utility model provides a pump head cap injection mold, which relates to the field of molds, and comprises an upper mold seat, a lower mold seat, a lower mold seat, an upper mold core and a buckling unit, the lower die holder comprises a first lower die holder and a second lower die holder which are matched with each other, a lower die core and a lower die insert are arranged in the first lower die holder, and the upper die holder and the lower die holder are matched with each other to form an integral die structure used for forming a product with an internal rib position; and the parting surface assembly is arranged at a parting position for product demolding on the mold. The parting surface assembly composed of the PL parting surface and the sliding block drawing needle parting line is adopted, the parting lines are reduced, segment difference or flash at the opening part of the head cap is effectively avoided, and the appearance of a product is smoother and more attractive. Due to the fact that the segment difference and the flash of the opening portion of the head cap are eliminated, when a user touches a product, the hand feeling is smoother, the use experience of the product is improved, and the competitiveness of the product in the market is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the mould field especially relates to a pump type head cap injection mould. BACKGROUND

[0002] In the injection production process of pump type head cap, the design of mould is crucial to the quality and performance of product. The traditional pump type head cap injection mould has some technical defects in the production process.

[0003] The parting line design of the existing pump type head cap injection mould will cause quality problems of product. These parting lines will leave marks in the head cap mouth after product forming, which are manifested as steps or flash. This step and flash not only affect the appearance of product, but more importantly, will seriously affect the hand feeling of product. For users, the uneven head cap mouth will bring poor use experience, which reduces the market competitiveness of product.

[0004] In actual production, in order to handle these defects caused by parting lines, additional post-processing procedures such as polishing, trimming, etc. are often needed. This undoubtedly increases the production cost and production cycle, and reduces the production efficiency. At the same time, the post-processing procedure may further affect the quality stability of product due to improper operation, etc.

[0005] In addition, the step and flash of head cap mouth may affect the assembly performance of product. In the assembly process of pump type product, if the head cap mouth has size deviation or unevenness, it may cause the assembly of other components to be not tight or difficult, which further affects the performance and reliability of the whole pump type product.

[0006] In summary, it is necessary to improve the existing pump type head cap injection mould, optimize the design of mould, reduce the parting line of product, solve the problem of step or flash of head cap mouth, improve the hand feeling of product, improve the production efficiency and quality stability of product, and reduce the production cost. CONTENT OF THE UTILITY MODEL

[0007] The utility model aims at the deficiency in the prior art, adopts the parting surface assembly composed of PL parting surface and slider pin extraction parting line, reduces the parting line, effectively avoids the step or flash of head cap mouth, makes the appearance of product more even and beautiful. Since the step and flash of head cap mouth are eliminated, the hand feeling is more smooth when users touch the product, which improves the use experience of product and enhances the competitiveness of product in the market.

[0008] In order to solve the above technical problems, the utility model solves the problem of step or flash of head cap mouth through the following technical scheme.

[0009] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0010] A pump type head cap injection mold, comprising:

[0011] An upper mold base, which is internally provided with an upper mold core and is externally provided with a buckle mechanism;

[0012] A lower mold base, which comprises a lower mold base one and a lower mold base two, the lower mold base one is internally provided with a lower mold core and a lower mold insert, and the upper mold base and the lower mold base are matched to form a mold overall structure for molding a product with internal rib positions;

[0013] A parting surface assembly, which is arranged on the mold for a parting position of product demolding.

[0014] Preferably, a slider core-pulling assembly is further included, which is composed of a slider insert and a slider core-pulling pin, a slider seat is arranged between the upper mold base and the lower mold base one, the slider insert is installed in the slider seat and is matched with the slider seat, the slider insert is designed with a 3° inclined surface pipe position, and the slider core-pulling pin is provided with a 5° inclined surface.

[0015] Preferably, the slider core-pulling pin parting line is located at the matching position of the slider insert and the slider core-pulling pin, so as to ensure the quality of the product mouth during parting.

[0016] Preferably, the 3° inclined surface pipe position of the slider insert is smaller than the 5° inclined surface of the slider core-pulling pin.

[0017] Preferably, an ejection assembly is further included, which is composed of an ejector rod, a lower mold punch, an ejector sleeve, an ejector sleeve pin, an upper ejector plate group and a lower ejector plate group and cooperates to ensure that the product can be smoothly demolded and will not be damaged.

[0018] Preferably, the upper mold base is composed of a No. 1 plate, a No. 2 plate, a No. 3 plate and a No. 4 plate, the lower mold base one is composed of a No. 5 plate and a No. 6 plate, and the lower mold base two is composed of two groups of mold feet.

[0019] Preferably, the buckle mechanism drives the lower ejector plate group to move, so that the product is separated from the lower mold core and the lower mold insert, and the ejector sleeve and the ejector sleeve pin cooperate to make the ejector sleeve eject the product to separate from the ejector sleeve pin.

[0020] Preferably, the No. 4 plate is connected with the slider core-pulling pin through an inclined guide column to drive the slider core-pulling pin to be pulled out.

[0021] Compared with the prior art, the pump type head cap injection mold has the following beneficial effects:

[0022] The pump head cap injection mold provided by the application adopts a parting surface assembly composed of a PL parting surface and a slider pin stripping parting line, reduces the parting line, effectively avoids the occurrence of steps or flash at the head cap opening, and makes the product appearance more flat and beautiful. Since the steps and flash at the head cap opening are eliminated, the user has a smoother feeling when touching the product, the product use experience is improved, and the product competitiveness in the market is enhanced.

[0023] In the slider core pulling assembly, the inclined surface tube position of the slider insert and the inclined surface of the slider pin stripping needle are matched with each other. When the slider moves, the slider insert can accurately position the slider pin stripping needle, preventing it from deviating during movement. This design reduces the wear of the slider pin stripping needle during operation, compared with the traditional mold without this structure, the service life of the slider pin stripping needle in the mold is prolonged, the replacement frequency of the pin stripping needle is reduced, and the maintenance cost and downtime are reduced.

[0024] The ejection assembly adopts a multi-step ejection design. In the initial demolding stage, the ejector sleeve and the ejector sleeve needle are ejected together, and when the product is separated from the lower mold core, the ejector sleeve needle is still in the product, ensuring that the product will not be skewed. Subsequently, the ejector sleeve continues to be ejected to separate the product from the ejector sleeve needle. This multi-step ejection method avoids the product being damaged during demolding, ensures the integrity and quality of the product, and reduces the product scrap rate caused by demolding problems.

[0025] The application controls the extraction sequence of the slider pin stripping needle through the inclined guide pillar. When the mold is opened, the parting surface is first opened, and the slider pin stripping needle is extracted, ensuring that the pin stripping needle and the product are completely separated. The ejector rod, ejector pin plate group, and locking mechanism group cooperate to sequentially complete the separation of the lower mold punch from the product, the separation of the product from the lower mold core and lower mold insert, and other operations, ensuring the smooth progress of the entire mold opening process. Reasonable mold opening sequence control avoids product defects or mold damage caused by improper mold opening, improves the stability and reliability of the mold operation, and reduces production delays and cost increases caused by mold failure. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0028] Figure 2 It is a schematic diagram of the overall structure of the present application;

[0029] Figure 3The utility model discloses a structure schematic diagram of the first stage of mould opening of the utility model;

[0030] Figure 4 The utility model discloses a structure schematic diagram of the second stage of mould opening of the utility model;

[0031] Figure 5 The utility model discloses a structure schematic diagram of the third stage of mould opening of the utility model;

[0032] Figure 6 The utility model discloses a structure schematic diagram of the fourth stage of mould opening of the utility model;

[0033] Figure 7 The utility model discloses a structure schematic diagram of the product of the utility model;

[0034] Figure 8 The utility model discloses a structure schematic diagram of the product of the utility model from the bottom;

[0035] Figure 9 The utility model discloses Figure 2 The utility model discloses an enlarged structure schematic diagram of A place in the utility model.

[0036] Figure number explanation: 1, upper die seat;101, product;102, PL parting surface;103, slider needle extraction parting line;110, No. 1 board;120, No. 2 board;130, No. 3 board;140, No. 4 board;2, lower die seat one;210, No. 5 board;220, No. 6 board;3, lower die seat two;310, die foot;4, upper die kernel;5, slider seat;6, slider insert;7, inclined guide pillar;8, slider needle;9, lower die insert;10, lower die kernel;11, lower die punch;12, plunger;13, plunger needle;14, upper thimble board group;15, lower thimble board group. Specific implementation

[0037] The utility model will be described in further detail below in combination with the drawings.

[0038] The following description is used to disclose the utility model so that the person skilled in the art can realize the utility model. The preferred embodiments in the following description are only as examples, and other obvious modifications can be thought by the person skilled in the art. The basic principles of the utility model defined in the following description can be used in other implementation schemes, modification schemes, improvement schemes, equivalent schemes and other technical schemes without departing from the spirit and scope of the utility model.

[0039] Those skilled in the art should understand that in the disclosure of the utility model, the directions or positions indicated by the terms "longitudinal", "transverse", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the directions or position relationships shown in the drawings, which are only for the convenience of the simplified description of the utility model and do not indicate or imply that the devices or elements referred to must have a particular direction, be constructed and operated in a particular direction, therefore the above terms cannot be understood as a limitation on the utility model.

[0040] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number. Embodiments

[0041] Please refer to Figures 1-9 A pump head cap injection mold, comprising:

[0042] An upper mold base 1, which is internally provided with an upper mold core and is provided with a side clamping mechanism;

[0043] A lower mold base, comprising a lower mold base one and a lower mold base two that cooperate with each other, the lower mold base one is internally provided with a lower mold core and a lower mold insert, and the upper mold base and the lower mold base cooperate with each other to form a mold overall structure for molding a product with internal rib positions;

[0044] A parting surface assembly, which is arranged at a parting position of the mold for product demolding.

[0045] The pump head cap injection mold of the present application is mainly composed of an upper mold base 1, a lower mold base one 2, a lower mold base two 3, a product 101 and the like, and the following is a detailed structure and working principle.

[0046] I. Mold structure basis

[0047] The pump head cap sand surface mold is composed of an upper mold base 1, a lower mold base one 2 and a lower mold base two 3 to form an overall mold structure. The upper mold base 1 is composed of a first plate 110, a second plate 120, a third plate 130 and a fourth plate 140, the lower mold base one 2 is composed of a fifth plate 210 and a sixth plate 220, and the lower mold base two 3 is composed of two groups of mold feet 310. The upper mold base 1, the lower mold base one 2 and the lower mold base two 3 cooperate with each other to form a closed cavity, in which PP material is injected and molded into a pump head cap product 101, the surface of the product 101 is sand surface, and there are rib positions inside.

[0048] II. Parting surface principle

[0049] The mold adopts an improved parting surface assembly, which is composed of a PL parting surface 102 and a slider pin parting line 103. When the mold is opened, this parting surface design can ensure that the head cap opening of the product 101 will not produce a step or flash. Compared with the traditional parting surface, the parting line that can cause product defects is reduced, thereby improving the feel and appearance quality of the product 101.

[0050] III. Slider core-pulling principle

[0051] The slider core-pulling assembly is composed of a slider insert 6 and a slider pin 8. The slider insert 6 has a 3° inclined surface tube position, and the slider pin 8 has a 5° inclined surface. The slider insert 6 is installed in the slider seat 5, and the slider seat 5 is located between the upper mold base 1 and the lower mold base 1. When the mold is opened and the slider starts to move, the 3° inclined surface tube position of the slider insert 6 plays a key positioning role. Since the 3° inclined surface is smaller than the 5° inclined surface of the slider pin 8, this inclined surface matching structure can accurately guide the movement of the slider pin 8, ensure its positioning accuracy, prevent the slider pin 8 from deviating during movement, and thus increase the service life of the pin.

[0052] IV. Mold opening and ejection principle

[0053] As shown in Figure 3 - Figure 6 shown

[0054] First stage

[0055] When the mold is opened, the parting surface is opened first. The No. 4 plate 140 is connected to the inclined guide pillar 7 and the slider pin 8. At the beginning of the opening action, the movement of the No. 4 plate 140 drives the inclined guide pillar 7 to move, so that the slider pin 8 is pulled out according to the predetermined trajectory, and the pin and the product 101 are completely separated.

[0056] Second stage

[0057] Then, the ejector rod pushes up the ejector plate assembly 14, and the No. 3 plate 130 and the lower ejector plate assembly 15 are driven to move together by the buckle mechanism assembly. In this process, the lower mold punch 11 and the product 101 are separated, reducing the clamping force of the product 101 on the lower mold core 10, and giving the product 101 a space for smooth demolding. The lower mold core 10 is located in the lower mold base 1, and the lower mold punch 11 also plays a role in the related ejection assembly.

[0058] Third stage

[0059] The ejector rod continues to push the upper ejector plate set 14, at this time the ejector rod set drives the lower ejector plate set 15 to continue to move, but the third plate 130 stops moving. At this stage, the product 101 and the lower die core 10 and the lower die insert 9 begin to separate. The lower die insert 9 is located in the lower die seat 2, and is first pushed out by the ejector cylinder 12 and the ejector cylinder pin 13 together. When the product 101 is separated from the lower die core 10, the ejector cylinder pin 13 is still in the product 101, which ensures that the product 101 will not be skewed.

[0060] Fourth stage

[0061] Finally, the ejector rod continues to push the upper ejector plate set 14, the lower ejector plate set 15 stops moving, and the ejector cylinder 12 continues to push out, so that the product 101 and the ejector cylinder pin 13 are separated, and the product 101 automatically falls off, completing the entire mold opening process. This multi-stage ejection design can ensure that the product 101 will not be damaged during the demolding process, and ensures the quality of the product 101.

[0062] It should be understood by those skilled in the art that the embodiments of the utility model shown in the above description and the drawings are only examples and do not limit the utility model. The purpose of the utility model has been completely and effectively achieved. The function and structural principle of the utility model have been shown and explained in the embodiments, and the embodiments of the utility model can be any deformation or modification without departing from the principle.

Claims

1. A pump-type head cap injection mold characterized by, Comprise: Upper die seat (1), which is internally provided with upper die core (4) and side provided with buckle machine group; Lower die seat, which comprises lower die seat one (2) and lower die seat two (3) matched with each other, the lower die seat one (2) is internally provided with lower die core (10) and lower die insert (9), and the upper die seat (1) and the lower die seat are matched with each other to form a die overall structure for forming a product (101) with internal rib position; Parting surface assembly, which is arranged on the die for the parting position of the product (101) demolding.

2. A pump-type head cap injection mold according to claim 1, wherein: It also comprises a slider core-pulling assembly, which is composed of slider insert (6) and slider core-pulling needle (8), the slider seat (5) is arranged between the upper die seat (1) and the lower die seat one (2), the slider insert (6) is installed in the slider seat (5) and is matched with the slider seat (5), the slider insert (6) is designed with 3° inclined surface tube position, and the slider core-pulling needle (8) has 5° inclined surface.

3. A pump-type head cap injection mold according to claim 2, wherein: The parting surface assembly comprises PL parting surface (102) and slider core-pulling needle parting line (103), the PL parting surface (102) and the slider core-pulling needle parting line (103) are respectively located at the corresponding positions of the product (101) after forming, the slider core-pulling needle parting line (103) is located at the matching position of the slider insert (6) and the slider core-pulling needle (8), and is used for ensuring the quality of the mouth part of the product (101) during parting.

4. A pump-type head cap injection mold according to claim 3, wherein: The 3° inclined surface tube position of the slider insert (6) is smaller than the 5° inclined surface of the slider core-pulling needle (8).

5. A pump-type head cap injection mold according to claim 4, wherein: It also comprises an ejection assembly, which is composed of ejector rod, lower die punch (11), ejector sleeve (12), ejector sleeve needle (13), upper ejector pin plate group (14) and lower ejector pin plate group (15) and cooperates together to ensure that the product (101) can be smoothly demolded and will not be damaged.

6. A pump-based head cap injection mold according to claim 1, wherein: The upper die seat (1) is composed of No. 1 plate (110), No. 2 plate (120), No. 3 plate (130) and No. 4 plate (140), the lower die seat one (2) is composed of No. 5 plate (210) and No. 6 plate (220), and the lower die seat two (3) is composed of two groups of die feet (310).

7. A pump-type head cap injection mold according to claim 5, wherein: The buckle machine group drives the lower ejector pin plate group (15) to move, so that the product (101) is separated from the lower die core (10) and the lower die insert (9), the ejector sleeve (12) and the ejector sleeve needle (13) cooperate together and make the ejector sleeve (12) eject the product (101) to separate from the ejector sleeve needle (13).

8. A pump-based head cap injection mold according to claim 6, wherein: The No. 4 plate (140) is connected with the inclined guide column (7) and the slider core-pulling needle (8) to drive the slider core-pulling needle (8) to be pulled out.

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