Forced demolding structure of air conditioner hanging machine middle frame mold

Abstract

The utility model discloses a forced demoulding structure of a middle frame mould of an air conditioner hanging machine, which comprises a convex mould and a concave mould which are relatively and movably arranged, the moving direction of the concave mould far away from the convex mould is the mould opening direction, a concave mould insert with a hot runner is fixedly arranged on the concave mould, an inclined top is movably arranged on the convex mould, and a runner is fixed on the inclined top. The concave mold insert is in clearance fit with the pitched roof to form a cavity used for forming the middle frame of the air conditioner hanging machine, one end of the runner is in separable communication fit with the hot runner, the other end of the runner is provided with a sprue communicated with the cavity, and the mold further comprises a sprue insert fixedly arranged on the concave mold insert; the runner is of an elastic pipeline structure comprising an upper inclined section and a lower bent section, the runner obliquely penetrates through the sprue insert and then is communicated with the hot runner, and the bent section of the runner extends to the lower portion of the cavity in a bent mode and is communicated with a sprue arranged at the bottom of the cavity. The thickness of the whole forced demolding structure can be effectively reduced, the overall size of the mold is reduced, and the manufacturing cost of the mold is reduced.

Description

Technical Field

[0001] This utility model relates to the field of injection mold equipment technology, and in particular to a strong release structure for the middle frame mold of an air conditioner wall unit. Background Technology

[0002] Due to the diverse structures of the mid-frame components in air conditioner wall units, the space at the air outlet of the mid-frame is relatively narrow. During the production process, the air outlet of the mid-frame is usually injection molded using a slanted hot runner injection method and demolded using a small-angle strong release structure. Because the angle of the strong release structure is small, ensuring that the overall hot runner has sufficient length inevitably leads to an increase in the overall thickness of the strong release structure. Sufficient space needs to be left in the demolding direction to install the strong release structure, which ultimately leads to an increase in the overall size of the mold and an increase in mold manufacturing costs. Furthermore, it is not suitable for smaller injection molding machines, increasing the requirements for injection molding machines and limiting its applicability. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a strong demolding structure for the middle frame mold of an air conditioner wall unit that can effectively reduce the mold thickness and save the mold manufacturing cost.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a strong release structure for the middle frame mold of an air conditioner wall unit, including a punch and a die arranged relatively movably, the direction of the die moving away from the punch being the mold opening direction, a die insert with a hot runner fixedly arranged on the die, an inclined ejector movably arranged on the punch, a runner fixed on the inclined ejector, the die insert and the inclined ejector being clearance-fitted to form a cavity for molding the middle frame of the air conditioner wall unit, one end of the runner forming a separable communication fit with the hot runner, the other end of the runner having a gate communicating with the cavity, and a gate insert fixedly arranged on the die insert; the runner is an elastic pipe structure including an upper inclined section and a lower bent section, the inclination of the runner passing through the gate insert and communicating with the hot runner, the bent section of the runner extending to the bottom of the cavity and communicating with the gate located at the bottom of the cavity.

[0005] As an improvement to the above scheme: the flow channel is further provided with a first reinforcing section and a second reinforcing section, both of which are vertical sections; the first reinforcing section is located at the junction of the flow channel and the lower section of the gate insert, and the second reinforcing section is located at the junction of the flow channel and the lower section of the die insert.

[0006] As an improvement to the above scheme: the first reinforcing section is positioned on the flow channel at a location corresponding to the boundary between the gate insert and the inclined top.

[0007] As an improvement to the above scheme: the inner diameter of the flow channel corresponding to the first and second reinforcing sections is larger than the inner diameter of the flow channel at similar locations.

[0008] As an improvement to the above solution: the hot runners are connected to each other through hot runner needle valves to form a flow-adjustable connection.

[0009] As an improvement to the above solution: the hot runner needle valve is fixedly mounted on the die insert and communicates with the hot runner.

[0010] As an improvement to the above solution, a temperature-controlled water circuit is also included, which is installed on the die insert and located near the first reinforcing section.

[0011] As an improvement to the above scheme, the slope of the inclined section of the flow channel is 14°.

[0012] The beneficial effects of this utility model are as follows: This utility model improves the forced ejection structure of the mold used in the injection molding production of the air conditioner wall frame by setting the lower section of the runner as a bending section and placing the gate of the runner at the bottom of the cavity. This allows the lower section of the runner to bend and extend to the bottom of the cavity. While keeping the overall length of the runner unchanged, the space occupied by the runner in the demolding direction is shortened, thereby effectively reducing the thickness of the entire forced ejection structure, reducing the overall size of the mold, and reducing the manufacturing cost of the mold. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the flow channel structure in this utility model.

[0015] The markings in the diagram are: 100-punch, 200-die insert, 300-hot runner, 400-sloping ejector, 500-runner, 510-gate, 520-first reinforcing section, 530-second reinforcing section, 600-gate insert, 700-hot runner needle valve, 800-temperature control water circuit. Detailed Implementation

[0016] To facilitate understanding of this utility model, the following description, in conjunction with the accompanying drawings, will provide further details.

[0017] In the description of this utility model, it should be noted that the terms "front", "rear", "left", "right", "up", "down", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] like Figure 1 and Figure 2As shown, the forced ejection structure of the air conditioner wall-mounted unit frame mold disclosed in this utility model uses a punch 100 and a die as the main components. The punch 100 and the die can move relative to each other. During relative movement, the punch 100 remains fixed, and the die moves away from the punch 100. The direction in which the die moves away from the punch 100 is the mold opening direction. A die insert 200 and a hot runner 300 are provided on the die. The die insert 200 is fixed on the die, and the hot runner 300 passes through the die insert 200, serving as the injection channel for the injection molding process. A movable ejector 400 is provided on the punch 100. The ejector 400 is used to eject the injection-molded product out of the cavity. The direction of movement of the ejector 400 is consistent with the mold opening direction. Figure 1 As shown, in this invention, the die cavity moves in the vertical direction, therefore the vertically upward direction is the mold opening direction, and the inclined ejector 400 ejects in the vertically upward direction. The bottom of the die cavity insert 200 and the top of the inclined ejector 400 form a cavity for molding the middle frame of an air conditioner unit through a clearance fit.

[0019] To reduce the space occupied by the entire flow channel structure and thus decrease the overall volume of the mold, this invention improves the flow channel structure. For example... Figure 1 and Figure 2As shown, the runner 500 adopts a pipe structure with an inclined section and a bent section. The bent section at the bottom of the runner 500 is fixed on the inclined top 400. The inclined section at the top of the runner 500 extends inclinedly towards the hot runner 300 and connects with the hot runner 300. The top port of the inclined section of the runner 500 is connected to the bottom port of the hot runner 300 to form a connection. The bent section of the runner 500 is connected to the cavity through the gate 510. At the same time, a gate insert 600 is fixedly provided on the die insert 200. A channel with a clearance fit with the inclined section of the runner 500 is provided on the gate insert 600, so that the inclined section of the runner 500 passes through the gate insert 600 and connects with the hot runner 300. During injection molding, molten plastic enters the runner 500 through the hot runner 300, flows along the runner 500 to the gate 510, and then enters the cavity through the gate 510 to fill the cavity. After the air conditioner wall frame product in the cavity cools and solidifies, the die insert 200 moves upward to open the cavity, the runner 500 disengages from the gate insert 600, and the angled ejector 400 pushes the air conditioner wall frame product out of the cavity. Compared to existing technologies with smaller slopes in forced demolding structures, this invention features a bent section at the bottom of the runner 500, with the gate 510 communicating with the cavity located at the bottom of the cavity. This allows the bent section of the runner 500 to extend below the cavity and communicate with it through the gate 510 at the bottom. Since the overall length of the runner 500 remains constant, this invention effectively shortens the length of the runner 500 in the demolding direction by making the lower part of the runner 500 a bent section. Furthermore, the inclined section at the top of the runner 500... The length in the ejection direction can be further shortened by increasing the angle. In this invention, the angle of the inclined section of the runner 500 can reach 14°. Therefore, compared with the inclined runner in the prior art, this invention effectively shortens the length of the runner 500 in the ejection direction by setting the inclined section and the bending section, thereby reducing the space occupied by the runner 500. Ultimately, it achieves a reduction in the overall thickness of the forced demolding structure and the overall volume of the mold. At the same time, the manufacturing cost of the mold is reduced, and the mold can be used with smaller injection molding machines, and the injection molding operation is more reliable.

[0020] This invention employs an elastic channel as the runner 500, allowing the runner 500 to adapt to the movement of the gate insert 600 through its own deformation capacity. After demolding, the runner 500 can recover its deformation through its own elasticity. During mold closing, the runner 500 can also pass through the channel in the gate insert 600 to connect with the hot runner 300 through its own elastic force. However, because the cavity insert 200 and the gate insert 600 move upward together at the moment of mold opening, while the ejector 500 and the punch remain stationary, the inclined section of the runner 500 will undergo elastic deformation due to the compression of the gate insert 500. The runner 500 is subjected to a large shear force, which may lead to difficult-to-recover deformation or even breakage of the runner 500 during long-term repeated mold opening and closing, thus seriously affecting the normal injection molding production of the air conditioner wall-mounted unit frame. To enhance the strength of the runner 500, this invention further improves the structure of the runner 500, such as... Figure 1 and Figure 2 As shown, a first reinforcing section 520 and a second reinforcing section 530 are provided on the runner 500. Both the first reinforcing section 520 and the second reinforcing section 530 are vertical sections. The first reinforcing section 520 is located at the junction of the runner 500 and the lower section of the gate insert 600, and the position of the first reinforcing section 520 on the runner 500 corresponds to the boundary between the gate insert 600 and the inclined ejector 400. The second reinforcing section 530 is located at the junction of the runner 500 and the lower section of the die insert 200. Both the first reinforcing section 520 and the second reinforcing section 530 are formed by adding glue positions on the runner 500. Since both the first reinforcing section 520 and the second reinforcing section 530 are vertical sections parallel to the mold exit direction, the undercut amount of the runner 500 on the die side is reduced. Therefore, at the moment of mold opening, these two positions on the runner 500 will not be subjected to the extrusion force of the die insert 200 and the gate insert 500. The instantaneous shear force on the runner 500 is reduced, and the overall strength of the runner 500 is improved, thereby effectively reducing the risk of breakage of the runner 500.

[0021] Furthermore, such as Figure 1 and Figure 2 As shown, in this invention, the inner diameter of the flow channel corresponding to the first reinforcing section 520 and the second reinforcing section 530 of the flow channel 500 is set to be larger than the inner diameter of the flow channel at similar locations, thereby increasing the strength of these two parts while increasing the injection volume.

[0022] Since the hot runner 300 and the runner 500 need to be separated during the mold opening process so that the runner 500 can be dislodged from the gate insert 600, a separate flow fit is required between the hot runner 300 and the runner 500. This connection is achieved by installing a hot runner needle valve 700 between the hot runner 300 and the runner 500. The hot runner needle valve 700 is preferably fixedly mounted on the cavity insert 200 and connected to the hot runner 300, allowing it to move together with the cavity insert 200. After mold closing, the needle valve end of the hot runner needle valve 700 is inserted into the runner 500 to achieve connection, and the injection flow rate can be adjusted through the hot runner needle valve 700.

[0023] In addition, such as Figure 1 As shown, this utility model also provides a temperature-controlled water channel 800 near the part of the flow channel 500 that is susceptible to shear force at the moment of mold opening. The temperature-controlled water channel 800 is set on the cavity insert 200 and is located close to the first reinforcing section 520, so that the temperature can be controlled independently and the injection molding process range can be increased.

Claims

1. A forced-release structure for a mid-frame mold of an air conditioner wall unit, comprising a punch (100) and a die that are relatively movable, wherein the direction of movement of the die away from the punch (100) is the mold opening direction, a die insert (200) with a hot runner (300) is fixedly disposed on the die, an inclined ejector (400) is movably disposed on the punch (100), a runner (500) is fixed on the inclined ejector (400), the die insert (200) and the inclined ejector (400) are clearance-fitted to form a cavity for molding the mid-frame of the air conditioner wall unit, one end of the runner (500) forms a separable communicating fit with the hot runner (300), and the other end of the runner (500) is provided with a gate (510) communicating with the cavity, characterized in that: It also includes a gate insert (600) fixedly mounted on the die insert (200); the runner (500) is an elastic pipe structure including an upper inclined section and a lower bent section. The inclination of the runner (500) passes through the gate insert (600) and connects with the hot runner (300). The bent section of the runner (500) bends and extends to the bottom of the cavity and connects with the gate (510) located at the bottom of the cavity.

2. The forced detachment structure of the air conditioner wall-mounted unit frame mold as described in claim 1, characterized in that: The runner (500) is also provided with a first reinforcing section (520) and a second reinforcing section (530), both of which are vertical sections; the first reinforcing section (520) is located at the junction of the runner (500) and the lower section of the gate insert (600), and the second reinforcing section (530) is located at the junction of the runner (500) and the lower section of the die insert (200).

3. The forced release structure of the air conditioner wall-mounted unit middle frame mold as described in claim 1, characterized in that: The first reinforcing section (520) is positioned on the flow channel (500) at the boundary between the gate insert (600) and the inclined top (400).

4. The forced detachment structure of the air conditioner wall-mounted unit frame mold as described in claim 1, characterized in that: The inner diameter of the flow channel (500) at the first reinforcing section (520) and the second reinforcing section (530) is larger than the inner diameter of the flow channel at the same location.

5. The forced detachment structure of the air conditioner wall-mounted unit frame mold as described in claim 1, characterized in that: The hot runner (300) and the flow channel (500) are connected and connected in a flow-adjustable manner through the hot runner needle valve (700).

6. The forced release structure of the air conditioner wall-mounted unit middle frame mold as described in claim 5, characterized in that: The hot runner needle valve (700) is fixedly mounted on the die insert (200) and communicates with the hot runner (300).

7. The forced detachment structure of the air conditioner wall-mounted unit frame mold as described in claim 1, characterized in that: It also includes a temperature-controlled water path (800), which is disposed on the die insert (200) and is located near the first reinforcing section (520).

8. The forced release structure of the air conditioner wall-mounted unit middle frame mold as described in claim 1, characterized in that: The slope of the inclined section of the flow channel (500) is 14°.

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