Injection mold for producing a component of an automobile air conditioner

Abstract

This utility model provides an injection mold for producing automotive air conditioning components, including an upper mold with an upper mold core, in which two independent upper left cavities and upper right cavities are formed; and a lower mold with a lower mold core and a mold core installed in the lower mold core, in which two independent lower left cavities and lower right cavities are formed; a first core-pulling assembly is provided in the lower left cavity, and the upper left cavity, lower left cavity, and first core-pulling assembly form the first molding cavity of the front air conditioning component; a second core-pulling assembly, a set of third core-pulling assemblies, a set of side core-pulling assemblies, and a set of inclined ejector assemblies are provided in the lower right cavity, and the upper right cavity, lower right cavity, second core-pulling assembly, third core-pulling assembly, side core-pulling assembly, and inclined ejector assembly form the second molding cavity of the rear air conditioning component. This utility model adopts a single mold with two cavities, which improves production efficiency and ensures the consistency and dimensional accuracy of product molding.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, specifically relating to an injection mold used for producing automotive air conditioning parts. Background Technology

[0002] Injection molds are tools used to produce plastic products; they also give plastic products their complete structure and precise dimensions. Injection molding is a processing method used for the mass production of certain complex-shaped parts. Specifically, it refers to injecting molten plastic into a mold cavity under high pressure using an injection molding machine, and then cooling and solidifying it to obtain the finished plastic part.

[0003] like Figure 1-2 As shown, they are the front air conditioning unit A and the rear air conditioning unit B of the car, respectively. The front air conditioning unit A has a row of mounting holes A1; the rear air conditioning unit B has a complex structure including an upper middle ear plate B1, a lower ear plate deep groove B2, a side inner cavity B3, and a back buckle B4.

[0004] However, existing technologies for these two automotive air conditioning components require the design of two sets of processing molds, resulting in high costs and limited production efficiency. The two sets of molds need to be installed on two separate injection molding machines (or produced on the same injection molding machine in shifts), preventing the molding, cooling, and demolding processes of the front air conditioning component A and the rear air conditioning component B from being parallel, thus reducing the total output per unit time. Furthermore, since the two sets of molds produce the two automotive air conditioning components separately, the differences in processing precision and injection parameters between the two independent molds may lead to inconsistent shrinkage rates between the two products, affecting subsequent assembly accuracy. Those skilled in the art urgently need to solve these technical problems. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, this utility model provides an injection mold for producing automotive air conditioning parts, which adopts a dual-cavity design to improve production efficiency and ensure product molding consistency and dimensional accuracy.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An injection mold for producing automotive air conditioning components includes an upper mold and a lower mold having a product forming cavity;

[0008] The upper mold includes an upper mold core, within which two independent upper left cavities and upper right cavities are formed;

[0009] The lower mold includes a lower mold core and a mold core installed inside the lower mold core, forming two independent lower left cavities and lower right cavities within the mold core;

[0010] A first core-pulling assembly is provided in the lower left cavity, and the upper left cavity, the lower left cavity and the first core-pulling assembly form the first molding cavity of the front air conditioning component;

[0011] The lower right cavity is provided with a second core-pulling assembly, a set of third core-pulling assemblies, a set of side-pulling assemblies and a set of inclined top assemblies. The upper right cavity, the lower right cavity, the second core-pulling assembly, the third core-pulling assembly, the side-pulling assembly and the inclined top assembly form the second molding cavity of the rear air conditioning component.

[0012] A sprue plate is provided on the upper mold core, and two hot nozzles are installed inside the sprue plate. A spot gate is provided at the lower end of the hot nozzle, and the two spot gates are respectively connected to the first and second molding cavities.

[0013] In a preferred embodiment of the present invention, the first core-pulling assembly includes a first slider slidably disposed on the mold core, and a first inclined guide post installed in the upper mold core and extending into the first slider. The end face of the first slider facing the first molding cavity is provided with a first shaped end face.

[0014] In a preferred embodiment of the present invention, the second core-pulling assembly includes a second slider slidably disposed on the mold core, and a second inclined guide post installed in the upper mold core and extending into the second slider. The end face of the second slider facing the second molding cavity is provided with a second shaped end face.

[0015] In a preferred embodiment of the present invention, a limiting cavity is formed in the middle of the side of the second slider near the second molding cavity, and a limiting block is provided in the upper mold core at a position corresponding to the limiting cavity.

[0016] In a preferred embodiment of the present invention, the third core-pulling assembly includes a third slider slidably disposed on the lower mold core, and a third inclined guide post installed in the upper mold core and extending into the third slider. The end face of the third slider facing the second molding cavity is configured as a third type end face.

[0017] In a preferred embodiment of the present invention, the side-pull assembly includes a cylinder mounted on the lower mold core and a side slider connected to the piston rod of the cylinder. The cylinder can drive the piston rod to act on the side slider until it abuts against the lower right cavity. The end face of the side slider facing the second molding cavity is configured as a fourth type end face.

[0018] In a preferred embodiment of the present invention, the inclined ejector assembly is arranged directly below the side slider, and includes an inclined ejector rod disposed in the mold core. The inclined ejector rod extends to the upper ejector plate and is slidably connected to the inclined ejector seat on the upper ejector plate. The end face of the inclined ejector rod facing the second molding cavity is configured as a fifth type end face.

[0019] Beneficial effects:

[0020] This utility model discloses an injection mold for producing automotive air conditioning parts. The core-pulling assembly relies on the inclined guide pillar of the upper mold core for driving. It utilizes the vertical motion of opening and closing the mold to convert the lateral core-pulling and resetting action of the slider. No additional power is required, which saves costs and has high synchronization of action.

[0021] The side-pulling assembly is driven by a cylinder, which independently controls the core pulling and resetting of the side slider. The timing of the action can be flexibly adjusted to meet the demolding requirements of the deep cavity structure of the side inner cavity.

[0022] This utility model adopts a single mold with two cavities, which can simultaneously mold two different products, the front air conditioning component and the rear air conditioning component, greatly improving production efficiency and reducing the production time and cost per unit product.

[0023] Each cavity and core-pulling component of this utility model is independently designed and compactly laid out. They can be operated separately during debugging and maintenance, reducing the difficulty and cost of mold maintenance. The precise fit between the core-pulling component and the cavity, combined with the stable material supply of the hot runner, ensures the consistency and dimensional accuracy of product molding and improves the product qualification rate. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the automotive air conditioning component described in the background art of this utility model. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the structure of the automotive air conditioning component described in the background art of this utility model. Figure 2 ;

[0026] Figure 3 A schematic diagram of the structure of an injection mold for producing automotive air conditioning components provided by this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the lower mold described in this utility model. Figure 1 ;

[0028] Figure 5 This is a schematic diagram of the structure of the upper mold described in this utility model;

[0029] Figure 6 This is a top view of the lower mold described in this utility model;

[0030] Figure 7 This is a schematic diagram of the structure of the lower mold described in this utility model. Figure 2 ;

[0031] Figure 8 This is a partial structural diagram of the upper mold described in this utility model;

[0032] Figure 9 This is a schematic diagram of the structure of the first slider of this utility model;

[0033] Figure 10 This is a schematic diagram of the structure of the second slider of this utility model;

[0034] Figure 11 This is a schematic diagram of the structure of the third slider described in this utility model;

[0035] Figure 12 This is a schematic diagram of the side-pull assembly described in this utility model;

[0036] Figure 13 This is a schematic diagram of the inclined top component of this utility model.

[0037] In the diagram: 1. Upper mold core; 11. Upper left cavity; 12. Upper right cavity.

[0038] 2. Lower mold core;

[0039] 3 mold cores, 31 lower left cavity, 32 lower right cavity;

[0040] 4 First core-pulling assembly, 41 First slider, 42 First inclined guide post;

[0041] 5 Second core-pulling assembly, 51 Second slider, 52 Second inclined guide post;

[0042] 6. Third core-pulling assembly; 61. Third slider; 62. Third inclined guide post;

[0043] 7 side-drawing components, 71 cylinder, 72 side slider;

[0044] 8. Inclined top assembly, 81. Inclined top rod, 82. Inclined top seat;

[0045] 9. Hot nozzles. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0047] like Figure 3-8 As shown, the present invention provides an injection mold for producing automotive air conditioning parts, comprising an upper mold and a lower mold having a product forming cavity;

[0048] The upper mold includes an upper mold core 1, within which two independent upper left cavity 11 and upper right cavity 12 are formed;

[0049] The lower mold includes a lower mold core 2 and a mold core 3 installed inside the lower mold core 2, forming two independent lower left cavity 31 and lower right cavity 32 within the mold core 3;

[0050] A first core-pulling assembly 4 is provided in the lower left cavity 31. The upper left cavity 11, the lower left cavity 31 and the first core-pulling assembly 4 form the first molding cavity of the front air conditioning component.

[0051] The lower right cavity 32 is provided with a second core-pulling assembly 5, a set of third core-pulling assemblies 6, a set of side-pulling assemblies 7 and a set of inclined top assemblies 8. The upper right cavity 12, the lower right cavity 32, the second core-pulling assembly 5, the third core-pulling assembly 6, the side-pulling assembly 7 and the inclined top assembly 8 form the second molding cavity of the rear air conditioning component.

[0052] A sprue plate is provided on the upper mold core 1, and two hot nozzles 9 are installed inside the sprue plate. The lower end of the hot nozzles 9 is provided with a point gate, and the two point gates are respectively connected to the first and second molding cavities.

[0053] The working principle and beneficial effects of the above embodiments are as follows:

[0054] This utility model discloses an injection mold for producing automotive air conditioning parts. It adopts a vertical parting structure of upper mold core 1 and lower mold core 2, combined with the embedded design of mold core 3, to form independent cavities that fit together in pairs, so as to realize the simultaneous injection molding of front and rear air conditioning parts.

[0055] In this invention, the plastic melt enters the hot runner system of the sprue plate through the injection molding machine, and is injected into the first molding cavity and the second molding cavity through the two hot nozzles 9 respectively, realizing the synchronous injection filling of the front and rear air conditioning parts. The point gate design reduces waste and improves the aesthetics of the gate marks, eliminating the need for secondary trimming.

[0056] After injection molding is completed, the mold cools and solidifies, the upper mold moves up and opens, the first core-pulling assembly 4, the second core-pulling assembly 5, the third core-pulling assembly 6 and the side core-pulling assembly 7 guide and detach from the product, and the lower mold ejection mechanism works in conjunction with the inclined ejection assembly 8 to eject the front and rear air conditioning parts, realizing automated demolding.

[0057] This utility model adopts a single mold with two cavities, which can simultaneously mold two different products, the front air conditioning component and the rear air conditioning component, greatly improving production efficiency and reducing the production time and cost per unit product.

[0058] Each cavity and core-pulling component of this utility model is independently designed and compactly laid out. They can be operated separately during debugging and maintenance, reducing the difficulty and cost of mold maintenance. The precise fit between the core-pulling component and the cavity, combined with the stable material supply of the hot runner, ensures the consistency and dimensional accuracy of product molding and improves the product qualification rate.

[0059] In one embodiment,

[0060] For example Figure 5 , 6 As shown in Figures 9 and 1, the first core-pulling assembly 4 includes a first slider 41 slidably disposed on the mold core 3, and a first inclined guide post 42 installed in the upper mold core 1 and extending into the first slider 41. The end face of the first slider 41 facing the first molding cavity is provided with a first shaped end face, and a row of mounting holes A1 of the air conditioning component before molding.

[0061] A first sliding groove for the movement of the first slider 41 is provided on the mold core 3. The first molded end face directly participates in the forming of the first molding cavity. A row of formed circular protrusions are machined on its surface, corresponding to the mounting hole A1 of the front air conditioning component. A first inclined guide hole is provided in the first slider 41 to cooperate with the first inclined guide post 42, so as to ensure smooth mold opening and core pulling.

[0062] The first inclined guide post 42 is fixed inside the upper mold core 1. When the mold is closed, it is inserted into the first inclined guide hole of the first slider 41. When the mold is opened, the upper mold moves upward, causing the first inclined guide post 42 to push the first slider 41 backward, thus completing the core pulling action. When the mold is closed, the first inclined guide post 42 pushes the first slider 41 back to its original position.

[0063] In one embodiment,

[0064] For example Figure 5 , 6 As shown in Figure 10, the second core-pulling assembly 5 includes a second slider 51 slidably disposed on the mold core 3, and a second inclined guide post 52 installed in the upper mold core 1 and extending into the second slider 51. The end face of the second slider 51 facing the second molding cavity is provided with a second type end face, and the ear plates B1 of the two middle upper parts of the air conditioning component after molding.

[0065] A limiting cavity is provided in the middle of the side of the second slider 51 near the second molding cavity. A limiting block is provided in the upper mold core 1 at the position corresponding to the limiting cavity. When the mold is closed, the limiting block is inserted into the limiting cavity to ensure the assembly accuracy of the second slider 51 and the upper right cavity 12.

[0066] The front end of the limiting block is a wedge-shaped guide section, which is convenient to be introduced when the mold is closed, forming a rigid constraint and eliminating the small displacement error of the second slider 51 caused by the push of the second inclined guide post 52. The limiting block bears the lateral component of the injection pressure on the second slider 51, reducing the load on the second inclined guide post 52.

[0067] In one embodiment,

[0068] For example Figure 5 , 6As shown in Figure 11, the third core-pulling assembly 6 includes a third slider 61 slidably disposed on the lower mold core 2, and a third inclined guide post 62 installed in the upper mold core 1 and extending into the third slider 61. The end face of the third slider 61 facing the second molding cavity is configured as a third type end face. After the two sets of third sliders 61 are formed, the deep groove B2 is formed on the two lower ear plates of the air conditioner component.

[0069] The third type of end face is a convex ridge structure that matches the shape of the deep groove B2. The two sets of third sliders 61 correspond to the deep grooves B2 of the lower ear plates on both sides of the rear air conditioning component, and work together to complete the forming, ensuring the forming consistency of the deep grooves B2 on both sides and improving the assembly performance of the rear air conditioning component.

[0070] In one embodiment,

[0071] For example Figure 6 , 12 As shown, the side-pull assembly 7 includes a cylinder 71 mounted on the lower mold core 2 and a side slider 72 connected to the piston rod of the cylinder 71. The cylinder 71 can drive the piston rod to act on the side slider 72 until it abuts against the lower right cavity 32. The end face of the side slider 72 facing the second molding cavity is set as a fourth type end face. After the two sets of side sliders 72 are formed, the side inner cavity B3 of the upper side ear plate of the air conditioner part is formed.

[0072] Before the mold closes, cylinder 71 is activated, piston rod extends and pushes side slider 72 to slide along slide rail toward the second forming cavity until side slider 72 is tightly abutted against the side wall of the lower right cavity 32. At this time, the fourth end face is completely embedded in the second forming cavity, accurately forming the cavity structure of the side inner cavity B3.

[0073] In one embodiment,

[0074] For example Figure 7 , 13 As shown, the inclined ejector assembly 8 is arranged directly below the side slider 72. It includes an inclined ejector rod 81 disposed in the mold core 3. The inclined ejector rod 81 extends to the upper ejector plate and is slidably connected to the inclined ejector seat 82 on the upper ejector plate. The end face of the inclined ejector rod 81 facing the second molding cavity is set as a fifth type end face. After the two sets of inclined ejector rods 81 are formed, the back buckle B4 of the air conditioner component is formed.

[0075] When the mold is closed, the inclined ejector rod 81 is in its initial position under the constraint of the inclined ejector seat 82, and the fifth type end face is precisely embedded in the second forming cavity. After the mold is opened, the side slider 72 of the side pull assembly 7 has completed the core pulling. The inclined ejector seat 82 rises synchronously with the upper ejector plate and guides the inclined ejector rod 81 to move in an inclined direction through its slide rail - both pushing the rear air conditioning component upward and moving to the side away from the product, so that the fifth type end face gradually separates from the undercut structure of the buckle B4, avoiding the buckle being pulled or damaged.

[0076] In summary:

[0077] This utility model discloses an injection mold for producing automotive air conditioning parts. The core-pulling assembly relies on the inclined guide pillar of the upper mold core for driving. It utilizes the vertical motion of opening and closing the mold to convert the lateral core-pulling and resetting action of the slider. No additional power is required, which saves costs and has high synchronization of action.

[0078] The side-pulling assembly is driven by a cylinder, which independently controls the core pulling and resetting of the side slider. The timing of the action can be flexibly adjusted to meet the demolding requirements of the deep cavity structure of the side inner cavity.

[0079] The inclined ejector assembly and the side slider are arranged vertically, and the timing of the inclined ejector is to be completed after the side core pulling is completed, so as to avoid structural interference. At the same time, the inclined ejector rod moves in an angled manner to precisely disengage from the undercut head, ensuring a smooth and damage-free demolding process.

[0080] This invention forms a complete closed loop by locking the precision during mold closing to the step-by-step core pulling and ejection during mold opening, which greatly reduces the risk of product jamming and deformation.

[0081] The core-pulling components of this utility model are all integrated into the mold core or lower mold core, and the inclined guide pillars are built into the upper mold core to avoid external structures occupying extra space; the side-pulling components and the inclined ejector components adopt an up-and-down stacked layout to make full use of vertical space and accommodate multiple complex motion components within a limited mold size.

[0082] This utility model adopts a single mold with two cavities, which can simultaneously mold two different products, the front air conditioning component and the rear air conditioning component, greatly improving production efficiency and reducing the production time and cost per unit product.

[0083] Each cavity and core-pulling component of this utility model is independently designed and compactly laid out. They can be operated separately during debugging and maintenance, reducing the difficulty and cost of mold maintenance. The precise fit between the core-pulling component and the cavity, combined with the stable material supply of the hot runner, ensures the consistency and dimensional accuracy of product molding and improves the product qualification rate.

[0084] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The terms "front," "back," "left," and "right" used in the text are not specific and are mainly for more intuitive illustration of the technical solution, and do not constitute a limitation. Those skilled in the art should understand that the above embodiments are only for illustrating the technical concept and features of this utility model, and their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the scope of protection of this utility model. All equivalent changes or modifications made according to the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. An injection mold for producing automotive air conditioning components, characterized in that: Includes an upper mold and a lower mold with product forming cavities; The upper mold includes an upper mold core (1), within which two independent upper left cavities (11) and upper right cavities (12) are formed; The lower mold includes a lower mold core (2) and a mold core (3) installed in the lower mold core (2), forming two independent lower left cavity (31) and lower right cavity (32) in the mold core (3); A first core-pulling assembly (4) is provided in the lower left cavity (31), and the upper left cavity (11), the lower left cavity (31) and the first core-pulling assembly (4) form the first molding cavity of the front air conditioning component; The lower right cavity (32) is provided with a second core-pulling assembly (5), a set of third core-pulling assemblies (6), a set of side-pulling assemblies (7) and a set of inclined top assemblies (8). The upper right cavity (12), the lower right cavity (32), the second core-pulling assembly (5), the third core-pulling assembly (6), the side-pulling assembly (7) and the inclined top assembly (8) form the second molding cavity of the rear air conditioning component. A sprue plate is provided on the upper mold core (1), and two hot nozzles (9) are installed inside the sprue plate. A point gate is provided at the lower end of the hot nozzle (9), and the two point gates are respectively connected to the first and second molding cavities.

2. The injection mold for producing automotive air conditioning components according to claim 1, characterized in that: The first core-pulling assembly (4) includes a first slider (41) slidably disposed on the mold core (3) and a first inclined guide post (42) installed in the upper mold core (1) and extending into the first slider (41). The end face of the first slider (41) facing the first molding cavity is provided with a first shaped end face.

3. The injection mold for producing automotive air conditioning components according to claim 1, characterized in that: The second core-pulling assembly (5) includes a second slider (51) slidably disposed on the mold core (3) and a second inclined guide post (52) installed in the upper mold core (1) and extending into the second slider (51). The end face of the second slider (51) facing the second molding cavity is provided with a second type end face.

4. An injection mold for producing an automotive air conditioning component according to claim 3, characterized in that: A limiting cavity is provided in the middle of the side of the second slider (51) near the second molding cavity, and a limiting block is provided in the upper mold core (1) at the position corresponding to the limiting cavity.

5. The injection mold for producing automotive air conditioning components according to claim 1, characterized in that: The third core-pulling assembly (6) includes a third slider (61) slidably disposed on the lower mold core (2) and a third inclined guide post (62) installed in the upper mold core (1) and extending into the third slider (61). The end face of the third slider (61) facing the second molding cavity is configured as a third type end face.

6. The injection mold for producing automotive air conditioning components according to claim 1, characterized in that: The side-pull assembly (7) includes a cylinder (71) mounted on the lower mold core (2) and a side slider (72) connected to the piston rod of the cylinder (71). The cylinder (71) can drive the piston rod to act on the side slider (72) until it abuts against the lower right cavity (32). The end face of the side slider (72) facing the second molding cavity is set as a fourth type end face.

7. An injection mold for producing automotive air conditioning components according to claim 6, characterized in that: The inclined ejector assembly (8) is arranged directly below the side slider (72), and includes an inclined ejector rod (81) disposed in the mold core (3). The inclined ejector rod (81) extends to the upper ejector plate and is slidably connected to the inclined ejector seat (82) on the upper ejector plate. The end face of the inclined ejector rod (81) facing the second molding cavity is configured as a fifth type end face.

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