Pump head cap mold

Abstract

The utility model discloses a pump head cap die which comprises an upper die assembly and a lower die assembly, the upper die assembly comprises an upper die plate, the lower die assembly comprises a lower die bearing plate and a lower die plate, the upper die plate is provided with an inclined guide column, a push plate is arranged between the lower die plate and the upper die plate, and the lower die plate is provided with a lower die punch capable of movably penetrating out of the push plate. The push plate is provided with an inclined guide face and a forming sliding block sliding along the guide face, the push plate is horizontally and slidably provided with a needle drawing sliding block located above the forming sliding block, the needle drawing sliding block is provided with a sliding hole matched with the inclined guide column, and the forming sliding block and the upper die plate form a forming cavity after being folded and the lower die punch stretching out of the push plate. After folding, a drawing needle of the drawing needle sliding block extends into the forming cavity, the lower die bearing plate is provided with a lower pull rod, the lower pull rod can movably penetrate out of the lower die plate and the push plate, the lower pull rod is obliquely provided with a hook leg, and the forming sliding block is provided with a pull hole matched with the hook leg; through the cooperation of the upper die plate, the forming sliding block and the lower die punch, the reliability of product production can be guaranteed, a parting line is located at the position, close to a pump nozzle, of a cap body instead of the middle of the cap body, and therefore the influence of the parting line on the using hand feeling of the pump head cap is reduced.

Description

Technical Field

[0001] The utility model relates to a head cap mold, in particular to a pump head cap mold. Background Art

[0002] Injection molding is to inject the heat-melted material into the mold cavity under high pressure, and after cooling and solidifying, a formed product is obtained. Due to its special structure, the existing pump head molds mainly include a cap body, a pump nozzle, and a straw arranged in the cap body. The existing technology mostly adopts the left-right clamping mold method when producing pump head caps. By this method, a parting line will be formed in the middle of the cap body, affecting the use feel, as shown in the attached Figure 1 and Figure 2 . Moreover, the existing technology is prone to damage the product when withdrawing the needle of the pump nozzle, resulting in a reduction in the qualified rate. To solve the above problems, a pump head cap mold is specifically proposed. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is: to provide a pump head cap mold with a simple structure, reliable use and a high qualified rate of finished products.

[0004] To solve the above technical problems, the utility model is solved by the following technical solutions: A pump head cap mold includes an upper mold assembly and a lower mold assembly. The upper mold assembly includes an upper template, and the lower mold assembly includes a lower mold carrier plate and a lower template. The upper template is provided with an inclined guide post. A push plate is arranged between the lower template and the upper template. The lower template is provided with a lower mold punch that can movably penetrate the push plate. The push plate is provided with an inclined guide surface. The push plate is provided with a forming slider that slides along the guide surface. The push plate is horizontally slidably provided with a needle withdrawing slider above the forming slider. The needle withdrawing slider is provided with a sliding hole that cooperates with the inclined guide post. After the forming slider and the upper template are closed, they form a forming cavity with the lower mold punch extending out of the push plate. After closing, the needle of the needle withdrawing slider extends into the forming cavity. The lower mold carrier plate is provided with a lower pull rod, and the lower pull rod can movably penetrate the lower template and the push plate. The lower pull rod is inclinedly provided with a hook leg, and the forming slider is provided with a pull hole that cooperates with the hook leg.

[0005] Preferably, sliding strips are horizontally arranged on both sides of the needle withdrawing slider, and the push plate is provided with a chute that cooperates with the sliding strips; the advantage is that the cooperation between the sliding strips arranged on both sides of the needle withdrawing slider and the chute on the push plate can ensure the stability of the horizontal sliding of the needle withdrawing slider.

[0006] Preferably, a straw groove is arranged at the upper end of the lower mold punch, and the lower mold carrier plate is provided with a thimble that extends into the lower mold punch, and a thimble pin is arranged inside the thimble; the advantage is that the cooperation of the thimble and the thimble pin can ensure the reliable forming of the straw during the injection molding process and ensure the reliability of product production.

[0007] Preferably, the forming slider is provided with a movable groove, and the inclined guide post can be movably inserted into the movable groove; the advantage is that the cooperation reliability between the inclined guide post and the needle-pulling slider can be ensured through the provided movable groove, and the interference between the inclined guide post and the forming slider can be reduced.

[0008] Preferably, the upper template is provided with a plurality of outer pull rods, the lower template is provided with fixed sleeves corresponding to the outer pull rods, the outer pull rods are movably inserted into the fixed sleeves, and an anti-detachment member is arranged at the lower end of the outer pull rods; the advantage is that the cooperation between the outer pull rods and the fixed sleeves can drive the lower template to move upward after the upper template moves upward by a certain distance, thereby ensuring the reliability of demolding after injection molding.

[0009] Preferably, the height of the guiding surface gradually decreases in the direction away from the lower die punch, and the hook legs gradually approach the lower die punch from top to bottom; the advantage is that the sliding direction of the forming slider can be reliably ensured, and the stable mold closing during the injection molding process can be guaranteed.

[0010] Preferably, the lower template is distributed with four lower die punches in a rectangular shape, the push plate is provided with two groups of needle-pulling sliders and two groups of forming sliders, and two needle-pulling pins are arranged side by side on the needle-pulling slider; the advantage is that four head caps can be injection molded at one time through the provided multiple lower die punches and the corresponding forming sliders and needle-pulling sliders, effectively improving the production efficiency.

[0011] Preferably, the push plate is provided with positioning protrusions, and the upper template is provided with positioning grooves corresponding to the positioning protrusions; the advantage is that the reliable and precise cooperation between the upper template and the push plate during mold closing can be ensured through the cooperation between the positioning protrusions and the positioning grooves.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the reliability of product production can be ensured through the cooperation of the upper template, the forming slider and the lower die punch, so that the parting line is located at a position on the cap body close to the pump nozzle instead of in the middle of the cap body, thereby reducing the influence of the parting line on the use feel of the pump head cap. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic diagram of the processing method of the prior art;

[0015] Figure 2 It is a schematic diagram of the head cap structure processed by the prior art;

[0016] Figure 3 Schematic diagram of the mold clamping state of the present utility model;

[0017] Figure 4 Schematic diagram of the cooperation between the forming slider, the ejector pin slider and the upper template when the present utility model clamps the mold

[0018] Figure 5 Schematic diagram of the positions of the ejector pin slider and the forming slider when the present utility model separates the mold;

[0019] Figure 6 Schematic diagram of the state when the present utility model separates the mold;

[0020] Figure 7 Schematic diagram of the distribution for simultaneous processing of multiple products of the present utility model;

[0021] Figure 8 Schematic diagram of the structure of the pump head cap processed by the present utility model. Detailed implementation manners

[0022] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious deformations. The basic principles defined in the following description can be used in other implementation schemes, deformation schemes, improvement schemes, equivalent schemes, and other technical schemes that do not deviate from the spirit and scope of the present utility model.

[0024] Those skilled in the art should understand that in the disclosure of the present utility model, the terms "longitudinal", "lateral", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position based on the orientation or position relationship shown in the drawings. It is only for the convenience of simplifying the description of the present utility model, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present utility model.

[0025] As shown in the attached Figure 2-7A pump head cap mold shown includes an upper mold assembly and a lower mold assembly. The upper mold assembly includes an upper template 1, and the lower mold assembly includes a lower mold carrier plate 2 and a lower template 3. The upper template 1 is provided with an inclined guide post 1.1. A push plate 5 is arranged between the lower template 3 and the upper template 1. The lower template 3 is provided with a lower die punch 4 that can movably penetrate through the push plate 5. The push plate 5 is provided with an inclined guide surface 5.1. The push plate 5 is provided with a forming slider 6 that slides along the guide surface 5.1. The push plate 5 is horizontally slidably provided with a needle-pulling slider 7 above the forming slider 6. The needle-pulling slider 7 is provided with a sliding hole 7.1 that cooperates with the inclined guide post 1.1. After the forming slider 6 and the upper template 1 are closed, they form a forming cavity with the lower die punch 4 that extends out of the push plate 5. After closing, the needle of the needle-pulling slider 7 extends into the forming cavity. The lower mold carrier plate 2 is provided with a lower pull rod 8. The lower pull rod 8 can movably penetrate through the lower template 3 and the push plate 5. The lower pull rod 8 is inclined and provided with a hook leg 8.1. The forming slider 6 is provided with a pull hole 6.1 that cooperates with the hook leg 8.1. It should be noted that the height of the guide surface 5.1 gradually decreases in the direction away from the lower die punch 4, and the hook leg 8.1 gradually approaches the lower die punch 4 from top to bottom.

[0026] During mold closing, during the process of the upper template 1 and the lower template 3 clamping the push plate 5, the lower die punch 4 of the lower template 3 extends upward. The inclined guide post 1.1 of the upper template 1 is inserted into the sliding hole 7.1 to drive the needle-pulling slider 7 to move horizontally towards the lower die punch 4. The lower mold carrier plate 2 supports the lower template 3. At the same time, the hook leg 8.1 of the lower pull rod 8 extends into the pull hole 6.1 to drive the forming slider 6 to close towards the lower die punch 4 along the guide surface 5.1. After closing, a forming cavity is formed, and the ejector pin 9.1 in the lower die punch 4 is inserted into the forming cavity along the vertical direction of the ejector sleeve. After injection molding is completed, the pump head cap shown in the appendix is formed. Figure 8 The pump head cap shown.

[0027] When mold opening is required after injection molding is completed, the upper template 1 moves upward to drive the needle-pulling slider 7 to move in the direction away from the lower die punch 4, so that the needle is withdrawn. Then the lower template 3 moves upward, thereby driving the hook leg 8.1 of the lower pull rod 8 to separate from the forming slider 6. During this process, the forming slider 6 moves in the direction away from the lower die punch 4 along the guide surface 5.1, so that the forming slider 6 is separated from the product. Finally, the ejector pin 9.1 pushes the product upward to facilitate clamping in subsequent steps.

[0028] The cooperation of the upper template 1, the forming slider 6 and the lower die punch 4 adopting the above scheme can ensure the reliability of product production, so that the parting line is located at a position on the cap body close to the pump nozzle, rather than in the middle of the cap body, thereby reducing the influence of the parting line on the use feel of the pump head cap.

[0029] Wherein the Figure 1The left side is a schematic cross-sectional view taken along the axis of the lower die punch 4, and the right side is a schematic view taken along the inclined guide pillar 1.1. At the same time, the driving of the upper template 1 and the lower template 3 is prior art and will not be elaborated here.

[0030] On the above basis, sliding strips 7.2 are horizontally arranged on both sides of the needle-pulling slider 7 of this design, and the push plate 5 is provided with sliding grooves that cooperate with the sliding strips 7.2. The cooperation between the sliding strips 7.2 on both sides of the needle-pulling slider 7 and the sliding grooves on the push plate 5 can ensure the stability of the horizontal sliding of the needle-pulling sliding strip 7.2.

[0031] At the upper end of the lower die punch 4 of this design, a straw groove is provided, and the lower die carrier plate 2 is provided with a thimble 9 extending into the lower die punch 4. A thimble pin 9.1 is arranged inside the thimble. The cooperation of the thimble and the thimble pin can ensure the reliable formation of the straw during the injection molding process and the reliability of product production.

[0032] To avoid interference during the movement of the inclined guide pillar 1.1, a movable groove is provided in the forming slider 6, and the inclined guide pillar 1.1 can be movably inserted into the movable groove, so that the cooperation reliability between the inclined guide pillar 1.1 and the needle-pulling slider 7 can be ensured through the movable groove.

[0033] It is worth mentioning that the upper template 1 of this design is provided with a plurality of outer pull rods 1.2, and the lower template 3 is provided with fixed sleeves 3.1 corresponding to the outer pull rods 1.2. The outer pull rods 1.2 are movably inserted into the fixed sleeves 3.1, and an anti-disengagement member 1.3 is arranged at the lower end of the outer pull rods 1.2. The cooperation between the outer pull rods 1.2 and the fixed sleeves 3.1 can drive the lower template 3 to move upward after the upper template 1 moves upward a certain distance, thereby ensuring the reliability of demolding after injection molding.

[0034] To effectively improve the production efficiency, four lower die punches 4 are rectangularly distributed on the lower template 3 of this utility model. The push plate 5 is provided with two groups of needle-pulling sliders 7 and two groups of forming sliders 6. Two needles are arranged side by side on the needle-pulling slider 7, and four head caps can be produced in one injection molding, effectively improving the production efficiency.

[0035] To ensure the accuracy of mold closing of this design, a positioning protrusion 5.2 is provided on the push plate 5, and a positioning groove corresponding to the positioning protrusion 5.2 is provided on the upper template 1.

[0036] Those skilled in the art should understand that the embodiments of the present utility model described above and shown in the drawings are only examples and do not limit the present utility model. The purpose of the present utility model has been completely and effectively realized. The functions and structural principles of the present utility model have been shown and explained in the embodiments. Without departing from the said principles, the embodiments of the present utility model can have any deformation or modification.

Claims

1. A pump head cap mold, comprising an upper mold assembly and a lower mold assembly, wherein the upper mold assembly comprises an upper mold plate, and the lower mold assembly comprises a lower mold support plate and a lower mold plate, characterized in that: The upper template is provided with an inclined guide column, a push plate is provided between the lower template and the upper template, the lower template is provided with a lower die punch that can movably pass through the push plate, the push plate is provided with an inclined guide surface, the push plate is provided with a forming slider that slides along the guide surface, the push plate is horizontally slidably provided with a needle extraction slider located above the forming slider, the needle extraction slider is provided with a sliding hole matching the inclined guide column, the forming slider and the upper template form a forming cavity with the lower die punch extending out of the push plate after closing, and the extraction needle of the needle extraction slider extends into the forming cavity after closing, the lower die supporting plate is provided with a lower pull rod, the lower pull rod can movably pass through the lower template and the push plate, the lower pull rod is tiltedly provided with a hook leg, and the forming slider is provided with a pulling hole matching the hook leg.

2. A pump cap mold according to claim 1, characterized in that: Slide bars are arranged transversely on both sides of the needle-extracting slide block, and the push plate is provided with slide grooves matched with the slide bars.

3. A pump head cap mold according to claim 1, characterized in that: The upper end of the lower die punch is provided with a straw groove, the lower die support plate is provided with a sleeve extending into the lower die punch, and a sleeve needle is provided in the sleeve.

4. A pump head cap mold according to claim 1, characterized in that: The forming slide block is provided with a movable groove, and the inclined guide column can be movably inserted into the movable groove.

5. A pump cap mold according to claim 1, characterized in that: The upper template is provided with a plurality of outer tie rods, the lower template is provided with a fixing sleeve corresponding to the outer tie rods, the outer tie rods are movably inserted into the fixing sleeves, and the lower ends of the outer tie rods are provided with anti-slip parts.

6. A pump head cap mold according to claim 1, characterized in that: The height of the guide surface gradually decreases in the direction away from the lower die punch, and the hook leg gradually approaches the lower die punch from top to bottom.

7. A pump cap mold according to claim 1, characterized in that: The lower mold plate is provided with four lower mold punches distributed in a rectangular shape, the push plate is provided with two groups of needle extraction slides and two groups of forming slides, and the needle extraction slide is provided with two extraction needles side by side.

8. A pump cap mold according to claim 1, characterized in that: The push plate is provided with a positioning protrusion, and the upper template is provided with a positioning groove corresponding to the positioning protrusion.

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