Injection mold for outer container of screw cap of water cup

Abstract

The utility model discloses a water cup screw cap outer container injection mold which comprises an upper mold and a lower mold, the upper mold is connected with an upper mold plate, an upper mold core is embedded in the upper mold plate, an upper groove is formed in the upper mold core, the lower mold is connected with a lower mold plate, a lower mold core is embedded in the lower mold plate, and sliding units are arranged on the four sides of the lower mold core. The lower mold core, the sliding units on the four sides and the upper groove define an injection mold cavity, the upper mold plate is connected with driving units corresponding to the sliding units, when the upper mold plate moves, the driving units can be driven to move, the driving units drive the sliding units to be away from or close to the lower mold core, and therefore the injection mold cavity is defined or opened. According to the injection mold for the outer container of the screw cap of the water cup, the four groups of driving units are simultaneously driven to move through the upper mold plate, so that the sliding units on the four sides are driven to be matched with the lower mold core and the upper molded groove to form the injection mold cavity, the synchronism of the sliding units on the four sides is ensured, the integrity of the injection mold cavity is good, and the quality of an injection product during molding is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an injection mold for an outer liner of a water cup with a screw-on cover. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die-casting or forging, smelting, stamping and other methods. In short, molds are tools used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material.

[0003] The water cup cover generally includes a rotating inner liner and a rotating outer liner. Since the shape of the rotating outer liner is irregular, it is usually necessary to set multiple side core pulling structures on the mold to realize one-time injection molding of the rotating outer liner. However, the multiple side core pulling structures in the prior art are generally driven separately by oil cylinders. During injection molding, the multiple oil cylinders will drive the corresponding core shafts to move to match with the mold cavity. However, this separate driving method may cause the core shafts to be out of sync when matching with the mold cavity, resulting in an incomplete molding cavity and problems with the quality of the injection molded product. Utility Model Content

[0004] The utility model aims to provide a water cup screw cover outer liner injection mould with good synchronization and ensuring the quality of injection moulded products.

[0005] In order to solve the above technical problems, the present invention can be implemented by adopting the following technical solutions:

[0006] A water cup screw-on cap outer liner injection mold, comprising an upper mold and a lower mold matched with the upper mold, wherein the upper mold is connected to an upper mold plate, an upper mold core is embedded in the upper mold plate, and an upper mold core is provided with an upper groove, and the lower mold is connected to a lower mold plate, a lower mold core is embedded in the lower mold plate, and sliding units are provided on four sides of the lower mold core, the lower mold core, the sliding units on the four sides and the upper grooves surround and form an injection mold cavity, and the upper mold plate is connected to a driving unit corresponding to the sliding unit, when the upper mold plate moves, it will drive the driving unit to move, and the driving unit drives the sliding unit away from or close to the lower mold core, thereby surrounding and forming an injection mold cavity or opening the injection mold cavity.

[0007] In one of the embodiments, the sliding unit includes a sliding block and an enclosing block. The sliding block is movably arranged on the lower template, and an inclined guide hole is opened on the sliding block. The enclosing block is connected to the sliding block.

[0008] In one of the embodiments, the driving unit includes a fixed block and an inclined guide rod, the fixed block is fixedly connected to the upper template, and the inclined guide rod is obliquely arranged on the fixed block.

[0009] In one of the embodiments, a positioning protrusion is provided on the surface of the lower template, and two limiting grooves are provided at the bottom of the sliding block, one of which cooperates with the positioning protrusion when the sliding unit is closed, and the other limiting groove cooperates with the positioning protrusion when the sliding unit is opened.

[0010] In one of the embodiments, the enclosing block is provided with a core head.

[0011] In one of the embodiments, guide pillars are provided at the four corners of the upper mold, and guide sleeves cooperating with the guide pillars are provided at the four corners of the lower mold. The guide pillars move along the guide sleeves to complete mold closing and mold opening.

[0012] In one of the embodiments, the upper mold is provided with a glue inlet channel, and the glue inlet channel is connected to the injection mold cavity.

[0013] In one of the embodiments, the lower mold is provided with a top plate, and a plurality of ejector pins are arranged on the top plate and penetrate from the lower mold plate and the lower mold core to the injection mold cavity. Beneficial Effects

[0014] The utility model discloses an injection mold for the outer liner of a water cup screw cap, wherein sliding units are arranged on four sides of a lower mold core, and a driving unit matched with the sliding units is connected to an upper mold plate. When the mold is closed or opened, the upper mold moves and moves with the upper mold plate. When the upper mold plate moves, it moves with the driving unit. When the driving unit moves, it drives the corresponding sliding units to move, so that the sliding units on the four sides are respectively surrounded by the lower mold core and the upper mold groove to form an injection mold cavity. Finally, the four groups of driving units are simultaneously driven to move by the upper mold plate, thereby driving the sliding units on the four sides to cooperate with the lower mold core and the upper mold groove, so as to realize the synchronization of the sliding units on the four sides, ensure the good integrity of the injection mold cavity, and ensure the quality of the injection molded product during molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of the injection mold for the outer liner of a water cup with a screw-on cover according to the utility model;

[0016] Figure 2 This is a cross-sectional view of the injection mold for the outer liner of the water cup screw-on cover of the utility model;

[0017] Figure 3 This is a schematic diagram of the upper mold core structure of the injection mold for the outer liner of the water cup screw cap of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the sliding unit and the driving unit of the injection mold for the outer liner of the water cup screw-on cover of the utility model;

[0019] Figure 5 This is a schematic diagram of the positioning protrusion structure of the injection mold for the outer liner of the water cup screw cover of the utility model;

[0020] Figure 6 This is a schematic diagram of the limiting groove structure of the injection mold for the outer liner of the water cup screw cover of the utility model;

[0021] Figure 7 This is a schematic diagram of the structure of the sliding unit of the injection mold for the outer liner of the water cup screw-on cover of the utility model;

[0022] Figure 8 This is a schematic diagram of the injection molded product of the utility model.

[0023] As shown in the attached figure:

[0024] 100, upper mold; 110, upper mold plate; 120, upper mold core; 121, upper groove; 130, guide pillar; 140, glue inlet flow channel;

[0025] 200, lower die; 210, lower template; 211, limiting protrusion; 220, lower die core; 230, guide sleeve; 240, ejector plate; 241, ejector pin;

[0026] 300, sliding unit; 310, sliding block; 311, limiting groove; 320, enclosing block; 330, oblique guide hole; 340, core head;

[0027] 400, driving unit; 410, fixing block; 420, oblique guide rod. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only."

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0031] See also Figures 1 to 8 , an injection mold for a water cup screw cap outer liner, comprising an upper mold 100 and a lower mold 200 matched with the upper mold 100, wherein the upper mold 100 is connected to an upper mold plate 110, the upper mold plate 110 is embedded with an upper mold core 120, and the upper mold core 120 is provided with an upper groove 121, the lower mold 200 is connected to a lower mold plate 210, the lower mold plate 210 is embedded with a lower mold core 220, and sliding units 300 are provided on four sides of the lower mold core 220, the lower mold core 220, the sliding units 300 on the four sides and the upper groove 121 are surrounded to form an injection mold cavity, the upper mold plate 110 is connected to a driving unit 400 corresponding to the sliding unit 300, when the upper mold plate 110 moves, it will drive the driving unit 400 to move, and the driving unit 400 drives the sliding unit 300 away from or close to the lower mold core 220, thereby surrounding to form an injection mold cavity or opening the injection mold cavity.

[0032] Specifically, in this embodiment, a lower mold core 220 is embedded in the lower mold plate 210, and sliding units 300 are arranged on the four sides of the lower mold core 220. At the same time, an upper mold core 120 is embedded in the upper mold plate 110, and an upper mold core 120 is provided with an upper groove 121. The upper mold plate 110 is also connected to four groups of driving units 400 corresponding to the sliding units 300. When the upper mold 100 and the lower mold 200 are opened or closed, the upper mold 100 will move with the upper mold plate 110, and the upper mold plate 110 will move with the upper mold core 120 and the four groups of driving units 400 during the movement. The driving unit 400 will act on the sliding unit 300 when moving, so that the sliding unit 300 moves toward the lower mold core 220. When moved into place, the lower mold core 220, the upper groove 121 of the upper mold core 120 and the four groups of sliding units 300 will surround and form an injection mold cavity for the product, and injection molding of the product will be realized through the injection mold cavity. When opening the mold, the upper mold 100 will bring the upper template 110 to reset, and the upper template 110 will simultaneously drive the upper mold core 120 and the four groups of driving units 400 to reset, thereby realizing mold opening. Finally, the upper template 110 will simultaneously drive the four groups of driving units 400 and the upper mold core 120 to move, and the four groups of driving units 400 will simultaneously act on the corresponding sliding units 300, so that the synchronization of the four groups of sliding units 300 is good, so that they can better cooperate with the lower mold core 220 and the upper groove 121, thereby ensuring the quality of the product during injection molding.

[0033] See also Figure 2 , Figure 4 and Figure 7 In order to achieve the encirclement of the injection mold cavity, the sliding unit 300 in this embodiment includes a sliding block 310 and an encirclement block 320, wherein the sliding block 310 is movably arranged on the lower mold plate 210, and an inclined guide hole 330 is opened on the sliding block 310, and the encirclement block 320 is connected to the sliding block 310. When the driving unit 400 drives the sliding block 310 to move, the sliding block 310 will move with the encirclement block 320, and the encirclement blocks 320 on four sides cooperate with the upper mold groove 121 and the lower mold core 220 to form an injection mold cavity.

[0034] In order to facilitate driving the sliding block 310, the driving unit 400 in this embodiment includes a fixed block 410 and an inclined guide rod 420, wherein the fixed block 410 is fixedly connected to the upper template 110, and the inclined guide rod 420 is obliquely arranged on the fixed block 410, and the inclined guide rod 420 cooperates with the inclined guide hole 330. When the sliding unit 300 is driven to move, the upper template 110 moves with the fixed block 410, and the fixed block 410 moves with the inclined guide rod 420. Since the inclined guide rod 420 cooperates with the inclined guide hole 330 of the sliding block 310, the inclined guide rod 420 drives the sliding block 310 to move during the movement, and the sliding block 310 moves with the enclosing block 320, thereby enclosing and forming an injection mold cavity.

[0035] And because the multiple groups of driving units 400 are connected to the upper template 110, when the upper template 110 moves, it will also move the fixed blocks 410 of the multiple groups of driving units 400, thereby driving the multiple groups of corresponding sliding units 300 to move by the inclined guide rods 420 of the multiple groups of driving units 400, thereby ensuring the synchronization of the multiple groups of sliding units 300, allowing the injection mold cavity to be normally enclosed, and improving the quality of the product during injection molding.

[0036] See also Figure 5 and Figure 6In order to ensure the encirclement of the injection mold cavity, in this embodiment, a positioning protrusion 211 is provided on the surface of the lower template 210, and at the same time, two limiting grooves 311 are provided at the bottom of the sliding block 310. When the driving unit 400 drives the sliding unit 300 to encircle and form an injection mold cavity, one of the limiting grooves 311 at the bottom of the sliding block 310 will cooperate with the positioning protrusion 211 of the lower template 210, so that the positioning protrusion 211 is snapped into this limiting groove 311, so as to position the sliding block 310, ensure that the encirclement block can be encircled normally, and will not shift during the injection molding process, thereby improving the injection molding quality of the injection molded product. When opening the mold, the sliding block 310 moves, and another limiting groove 311 at the bottom cooperates with the positioning protrusion 211 of the lower template 210, so that the positioning protrusion 211 is snapped into this limiting groove 311.

[0037] Of course, in order to complete the one-time injection molding of the injection molded product (the outer shell of the water cup screw cap), a core head 330 is also provided on the enclosing block 320. Through the cooperation between the core heads 330, the product can be conveniently injection molded. The shape of the core head 330 can correspond to the part that needs to be formed in the injection molded product.

[0038] Finally, see Figure 2 and Figure 4 In order to realize injection molding, mold closing and mold opening, in this embodiment, a glue feed channel 140 is provided on the upper mold 100, and the glue feed channel 140 is connected with the injection mold cavity. The injection mold cavity is injected with material through the glue feed channel 140, thereby realizing injection molding.

[0039] At the same time, guide pillars 130 are arranged at the four corners of the upper mold 100, and guide sleeves 230 cooperating with the guide pillars 130 are arranged at the four corners of the lower mold 200. The guide pillars 130 move along the guide sleeves 230 to complete the mold closing and mold opening of the upper mold 100 and the lower mold 200. In order to facilitate the demolding of the injection molded product, a top plate 240 is provided on the lower mold 200, and a plurality of ejector pins 241 are arranged on the top plate 240, which penetrate from the lower mold plate 210 and the lower mold core 220 to the injection mold cavity. Through the ejector pins 241, the injection molded product in the injection mold cavity can be conveniently ejected, thereby facilitating the demolding of the product. The structures of the glue inlet channel 140, the guide pillars 130, the guide sleeves 230 and the ejector pins 241 are all existing technologies, so they are not described in detail here.

[0040] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Any technician in the industry can smoothly implement the utility model according to the drawings shown in the specification and the above description; however, any equivalent changes, modifications and evolutions made by any technician familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the scope of protection of the technical solution of the utility model.

Claims

1. An injection mold for a water cup screw cap outer liner, characterized in that: It comprises an upper die and a lower die matched with the upper die, wherein the upper die is connected to an upper die plate, an upper die core is embedded in the upper die plate, and an upper die core is provided with an upper groove; The lower mold is connected to a lower mold plate, a lower mold core is embedded in the lower mold plate, and sliding units are arranged on four sides of the lower mold core. The lower mold core, the sliding units on the four sides and the upper mold groove together form an injection mold cavity; The upper mold plate is connected to a driving unit corresponding to the sliding unit. When the upper mold plate moves, the driving unit is driven to move, and the driving unit drives the sliding unit away from or close to the lower mold core, thereby enclosing an injection mold cavity or opening the injection mold cavity.

2. The water cup screw cover outer liner injection mold according to claim 1, characterized in that: The sliding unit comprises a sliding block and an enclosing block. The sliding block is movably arranged on the lower template and is provided with an oblique guide hole. The enclosing block is connected to the sliding block.

3. The water cup screw cover outer liner injection mold according to claim 1, characterized in that: The driving unit comprises a fixed block and an inclined guide rod, wherein the fixed block is fixedly connected to the upper template, and the inclined guide rod is obliquely arranged on the fixed block.

4. The water cup screw cover outer liner injection mold according to claim 2, characterized in that: A positioning protrusion is arranged on the surface of the lower template, and two limiting grooves are arranged at the bottom of the sliding block, wherein one limiting groove cooperates with the positioning protrusion when the sliding unit is enclosed, and the other limiting groove cooperates with the positioning protrusion when the sliding unit is opened.

5. The water cup screw cover outer liner injection mold according to claim 2, characterized in that: The enclosing block is provided with a core head.

6. The water cup screw cap outer liner injection mold according to claim 1, characterized in that: Guide pillars are arranged at the four corners of the upper mold, and guide sleeves matched with the guide pillars are arranged at the four corners of the lower mold. The guide pillars move along the guide sleeves to complete mold closing and mold opening.

7. The water cup screw cap outer liner injection mold according to claim 1, characterized in that: The upper mold is provided with a glue inlet flow channel, and the glue inlet flow channel is communicated with the injection mold cavity.

8. The water cup screw cover outer liner injection mold according to claim 4, characterized in that: The lower mold is provided with a top plate, and a plurality of ejector pins are arranged on the top plate and penetrate from the lower mold plate and the lower mold core to the injection mold cavity.

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