Die with adjustable concentricity

Abstract

The utility model relates to the technical field of moulds, in particular to a mould with adjustable concentricity, which comprises a movable mould plate, a fixed mould plate and a mould core assembly, the movable mould plate and the fixed mould plate are oppositely arranged and movably connected, the top of the fixed mould plate is provided with a core pulling cylinder for stroke core pulling, and the edge of the top end of the fixed mould plate is fixedly provided with a cylinder frame for installing the core pulling cylinder. A bottom plate is installed on the side, opposite to the movable mold plate, of the fixed mold plate, mold feet are installed between the fixed mold plate and the bottom plate, and a hot runner plate, a sprue plate and a panel are sequentially installed on the side, opposite to the fixed mold plate, of the movable mold plate; the mold core assembly comprises a back plate a and a back plate b, the back plate a is fixedly arranged in the movable mold plate, a side mold core is matched with a mold core frame to form an outer mold base, an inner mold core is limited through a positioning piece provided with a positioning groove, the concentricity and stability of the inner mold core can be ensured, and the bottom end of the side mold core is tightly attached to the outer wall of the bottom end of the mold core; and the concentricity of the outer mold base and the inner mold core after mold closing can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and specifically relates to a mold with adjustable concentricity. Background Art

[0002] An injection mold is a special tool for plastic molding. By injecting molten plastic into the mold cavity and cooling it, the required product is formed. The mold usually consists of a moving mold and a fixed mold, and is equipped with structures such as a cooling system, an exhaust system, and an ejector pin system to ensure the smooth progress of the molding process. The design and manufacture of injection molds is a complex process, involving material selection, structural optimization, and processing technology. Commonly used mold materials include steel and aluminum because of their good strength and wear resistance.

[0003] The production process of a stylus also applies injection molds. Using injection molds for stylus processing can achieve batch production and standardization, but there are still certain problems: Since the inside of the stylus is hollow, when using an injection mold to process it, due to the differences in the concentricity and stability of the mold cores, the quality of the products produced by different molds will vary; Therefore, in view of the above current situation, there is an urgent need to develop a mold with adjustable concentricity to overcome the deficiencies in current practical applications and meet the current needs. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a mold with adjustable concentricity to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A mold with adjustable concentricity includes a moving template, a fixed template, and a core assembly. The moving template and the fixed template are arranged opposite to each other and are movably connected. A core-pulling cylinder for stroke core-pulling is provided on the top of the fixed template, and a cylinder frame for installing the core-pulling cylinder is fixedly provided at the top edge of the fixed template. A bottom plate is installed on one side of the fixed template opposite to the moving template, and a mold foot is installed between the fixed template and the bottom plate. On one side of the moving template opposite to the fixed template, a hot runner plate, a sprue plate, and a panel are successively installed;

[0006] The core assembly includes a back plate a and a back plate b. The back plate a is fixedly provided inside the moving template, and the back plate b is fixedly provided inside the fixed template. A plurality of inclined guide columns are fixedly provided on the inner side of the back plate a. Two oppositely distributed guide blocks are installed at the edge position of the back plate b. A slider is slidably installed inside the guide block. A base is fixedly provided at the middle position of the bottom of the back plate b. The bottom end of the cylinder shaft of the core-pulling cylinder is detachably connected to a connecting seat, and a mold core is installed at the middle position of the bottom of the connecting seat.

[0007] Preferably, a side mold core is detachably connected to the inner side of the slider, and a mold core holder is installed on the inner side of the side mold core. Specifically, an inclined groove adapted to the inclined guide pillar is formed at the edge of the slider and an inclined guide sleeve is embedded therein, which can automatically open the two side mold cores that are closed during demolding.

[0008] Preferably, a positioning member is detachably connected to the middle position of the top of the base, and a groove adapted to the bottom end of the mold core is formed at the middle position of the top of the positioning member. Specifically, the groove provided can achieve a positioning effect on the bottom end of the mold core, improving its concentricity and stability.

[0009] Preferably, an anti - overflow rubber sleeve is installed at the position of the mold core near the top end of the mold core holder. Specifically, the anti - overflow rubber sleeve provided can be used to prevent the molten plastic from overflowing during the injection process, protect the mold and equipment, ensure the product forming quality, reduce the cleaning work, avoid wasting materials, and improve the production efficiency.

[0010] Preferably, cooling water channels for temperature control are provided inside the hot runner plate, the moving template, and the fixed template. Specifically, the cooling water channels provided can achieve rapid and uniform cooling, control the mold temperature, improve the production efficiency, ensure the product quality, reduce defects, extend the mold life, and reduce energy consumption.

[0011] Preferably, a thimble mechanism is installed between the bottom plate and the fixed template. Specifically, by using the thimble mechanism, the demolding speed can be increased, thereby shortening the injection molding cycle and improving the production efficiency.

[0012] Compared with the prior art, the present utility model provides a mold with adjustable concentricity, having the following

[0013] Beneficial effects:

[0014] It uses a side mold core and a mold core holder to form an outer mold embryo, and the internal mold core is limited by a positioning member provided with a positioning groove, which can ensure the concentricity and stability of the internal mold core. The bottom end of the side mold core is closely attached to the outer wall of the bottom end of the mold core, which can ensure the concentricity of the outer mold embryo and the inner mold core after mold closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings 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:

[0016] Figure 1 is a front - view structural schematic diagram of the present utility model;

[0017] Figure 2 is an exploded view of the present utility model;

[0018] Figure 3 This is an exploded view of the mold core assembly of the present utility model;

[0019] Figure 4 This is a structural schematic diagram of the mold core assembly of the present utility model;

[0020] Figure 5 This is a structural schematic diagram of the connecting seat of the present utility model;

[0021] Figure 6 This is a structural schematic diagram of the side mold core of the present utility model;

[0022] Figure 7 This is a side view of the side mold core of the present utility model;

[0023] Figure 8 This is a structural schematic diagram of the mold core of the present utility model;

[0024] Figure 9 This is an exploded view of the side mold core of the present utility model.

[0025] In the figure: 10, panel; 20, sprue plate; 30, hot runner plate; 40, moving template; 50, fixed template; 60, mold feet; 70, bottom plate; 701, ejector pin mechanism; 80, core pulling cylinder; 801, cylinder frame; 90, mold core assembly; 901, back plate a; 902, back plate b; 903, guide block; 904, slider; 9041, side mold core; 905, angle pin; 906, base; 9061, positioning part; 907, connecting seat; 908, mold core holder; 909, mold core; 9091, anti - overflow rubber sleeve. Detailed implementation manners

[0026] 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 of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0027] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Embodiment:

[0029] Please refer to Figures 1-9 ,the present utility model provides a technical solution: a mold with adjustable concentricity, including a moving template 40, a fixed template 50 and a core component 90. The moving template 40 and the fixed template 50 are arranged oppositely and movably connected. A core-pulling cylinder 80 for stroke core-pulling is provided at the top of the fixed template 50. A cylinder frame 801 for installing the core-pulling cylinder 80 is fixedly provided at the top edge of the fixed template 50. A bottom plate 70 is installed on one side of the fixed template 50 opposite to the moving template 40. A mold foot 60 is installed between the fixed template 50 and the bottom plate 70. A hot runner plate 30, a sprue plate 20 and a face plate 10 are sequentially installed on one side of the moving template 40 opposite to the fixed template 50;

[0030] The core component 90 includes a back plate a901 and a back plate b902. The back plate a901 is fixedly provided inside the moving template 40, and the back plate b902 is fixedly provided inside the fixed template 50. A plurality of angled guide pillars 905 are fixedly provided on the inner side of the back plate a901. Two oppositely distributed guide blocks 903 are installed at the edge position of the back plate b902. A slider 904 is slidably installed inside the guide blocks 903. A base 906 is fixedly provided at the middle position of the bottom of the back plate b902. The bottom end of the cylinder shaft of the core-pulling cylinder 80 is detachably connected to a connecting seat 907, and a mold core 909 is installed at the middle position of the bottom of the connecting seat 907.

[0031] Preferably, a side core 9041 is detachably connected to the inner side of the slider 904, and a core holder 908 is installed inside the side core 9041. Specifically, an angled groove adapted to the angled guide pillar 905 is formed at the edge of the slider 904 and an angled guide sleeve is embedded therein, which can automatically open the two side cores 9041 that are closed during demolding.

[0032] Preferably, a positioning member 9061 is detachably connected to the middle position of the top of the base 906, and a groove adapted to the bottom end of the mold core 909 is formed at the middle position of the top of the positioning member 9061. Specifically, the groove provided can achieve a positioning effect on the bottom end of the mold core 909, improving its concentricity and stability.

[0033] Preferably, an anti-bleed rubber sleeve 9091 is installed at the position of the mold core 909 near the top end of the core holder 908. Specifically, the anti-bleed rubber sleeve 9091 provided can be used to prevent the molten plastic from overflowing during injection, protect the mold and equipment, ensure the product forming quality, reduce the cleaning work, avoid wasting materials, and improve the production efficiency.

[0034] Preferably, cooling water channels for temperature control are opened inside the hot runner plate 30, the moving template 40 and the fixed template 50. Specifically, the cooling water channels provided can quickly and evenly cool, control the mold temperature, improve the production efficiency, ensure the product quality, reduce defects, extend the mold life, and reduce energy consumption.

[0035] Preferably, a thimble mechanism 701 is installed between the bottom plate 70 and the fixed template 50. Specifically, by using the thimble mechanism 701, the demolding speed can be increased, thereby shortening the injection molding cycle and improving production efficiency.

[0036] Working principle: The mold is installed on the injection molding machine and driven to close the mold. The injection molding machine injects the molten material into the internal runner through the nozzle sleeve of the nozzle plate 20, and finally injects it into the cavity formed by the side mold core 9041 and the mold core 909 through the runner. During this process, the hot runner plate 30 maintains the temperature of the plastic in the runner to prevent it from cooling and solidifying prematurely. According to the molding temperature requirements, heat dissipation is carried out in cooperation with the internal cooling water channel. After the stylus product in the cavity is formed, the injection molding machine drives the moving template 40 to move, and then drives the back plate a901 to displace. When the back plate a901 displaces, it will drive the two sliders 904 and the side mold core 9041 installed inside the sliders 904 to displace to both sides through the angled guide pillar 905, realizing the demolding of the side mold core 9041 from the injection molded stylus product. Subsequently, the core pulling cylinder 80 drives the mold core 909 to rise, so that the mold core 909 is demolded from the injection molded stylus product. Finally, the finished product is pushed out by the thimble mechanism 701.

[0037] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

Claims

1. A mold with adjustable concentricity, characterized in that: It includes a moving template (40), a fixed template (50) and a core component (90). The moving template (40) and the fixed template (50) are arranged oppositely and movably connected. At the top of the fixed template (50), there is a core-pulling cylinder (80) for stroke core-pulling. At the top edge of the fixed template (50), there is a cylinder frame (801) for installing the core-pulling cylinder (80). On one side of the fixed template (50) opposite to the moving template (40), a bottom plate (70) is installed. Between the fixed template (50) and the bottom plate (70), a die leg (60) is installed. On one side of the moving template (40) opposite to the fixed template (50), a hot runner plate (30), a sprue plate (20) and a panel (10) are successively installed. The core component (90) includes a back plate a (901) and a back plate b (902). The back plate a (901) is fixedly arranged inside the moving template (40), and the back plate b (902) is fixedly arranged inside the fixed template (50). Inside the back plate a (901), multiple inclined guide pillars (905) are fixedly arranged. At the edge position of the back plate b (902), two oppositely distributed guide blocks (903) are installed. Inside the guide blocks (903), sliders (904) are slidably installed. At the middle position of the bottom of the back plate b (902), a base (906) is fixedly arranged. At the bottom end of the cylinder shaft of the core-pulling cylinder (80), a connecting seat (907) is detachably connected. At the middle position of the bottom of the connecting seat (907), a core (909) is installed.

2. The concentricity-adjustable mold according to claim 1, characterized in that: Inside the slider (904), a side core (9041) is detachably connected. Inside the side core (9041), a core frame (908) is installed.

3. The concentricity-adjustable mold according to claim 1, wherein: At the middle position of the top of the base (906), a positioning part (9061) is detachably connected. At the middle position of the top of the positioning part (9061), a groove adapted to the bottom end of the core (909) is opened.

4. A mold with adjustable concentricity according to claim 1, characterized in that: At a position of the core (909) near the top end of the core frame (908), an anti-bleeding rubber sleeve (9091) is installed.

5. A mold with adjustable concentricity according to claim 1, characterized in that: Inside the hot runner plate (30), the moving template (40) and the fixed template (50), cooling water channels for temperature control are opened.

6. The concentricity-adjustable mold according to claim 1, wherein: Between the bottom plate (70) and the fixed template (50), an ejector pin mechanism (701) is installed.

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