Injection molding equipment for processing double-color display window of washing machine control panel

Abstract

The utility model relates to the technical field of injection molding machines, and discloses injection molding equipment for processing a double-color display window of a control panel of a washing machine, which comprises an injection molding machine body, and a movable mold and a fixed mold which are oppositely arranged, and the injection molding machine body is provided with a first injection molding nozzle and a second injection molding nozzle; the fixed mold comprises a first fixed mold and a second fixed mold which are linearly arranged; the movable mold can horizontally reciprocate, and the distance between the movable mold and the first fixed mold and the distance between the movable mold and the second fixed mold are adjustable. Through the unique mold design, the first fixed mold and the second fixed mold which are linearly arranged are matched with the movable mold capable of horizontally reciprocating to realize double-color injection molding, an expensive double-color injection molding machine does not need to be purchased, the equipment purchasing cost is greatly reduced, meanwhile, a complicated and high-cost mold insert transformation process is avoided, and the production efficiency is improved. And the die scrapping risk and the transformation cost caused by die transformation are reduced, the capital pressure of enterprises is effectively relieved, and the capital use efficiency of the enterprises is improved.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, specifically to an injection molding device for processing a dual-color display window for a washing machine control panel. Background Technology

[0002] In a large washing machine manufacturing plant, the display window of the washing machine control panel needs to be injection molded using an injection molding machine. Since the front and back frames of the display window are two different colors, it is generally called a two-color display window. The production of the two-color display window is one of the important links in the entire production process. Traditional two-color injection molding mostly adopts two-color injection molding machines or mold insert modification processes. In this large-scale production scenario, many problems that seriously affect production efficiency and cost control have been exposed.

[0003] When using two-color injection molding machines for production, the equipment procurement cost becomes a huge burden for factories. A high-performance two-color injection molding machine is expensive, possibly costing millions or even tens of millions of yuan. For large washing machine manufacturing factories, in order to meet the needs of large-scale production, it is often necessary to purchase multiple such machines. Taking a factory with a monthly output of 50,000 washing machines as an example, if the price of each two-color injection molding machine is 5 million yuan, purchasing 5 machines would require an investment of 25 million yuan. This not only significantly increases the factory's initial investment cost, but also ties up a large amount of working capital, putting great pressure on the company's cash flow.

[0004] Moreover, the maintenance cost of two-color injection molding machines is quite high. Due to their complex structure, which includes multiple high-precision mechanical and electronic components, daily maintenance requires professional technicians and expensive repair equipment. Once the equipment malfunctions, the repair time is long and the cost is high. The repair cycle may last for several weeks, during which the production line is forced to stop, resulting in a large number of orders not being delivered on time and causing serious economic losses to the factory.

[0005] While the mold insert modification process reduces equipment procurement costs, the modification process is fraught with difficulties. In large-scale production, modifying mold inserts requires precise processing and adjustment of existing molds. Taking the existing molds in the factory as an example, the structure of each mold is carefully designed and manufactured. Modifying mold inserts requires high-precision processing equipment and experienced technicians. During the modification process, even slight deviations may cause the mold to become unusable or even scrapped. This not only increases the modification cost but also prolongs the modification cycle and affects the normal production schedule. Utility Model Content

[0006] To address the technical problems existing in the background art, this utility model proposes an injection molding device for processing a dual-color display window of a washing machine control panel.

[0007] This utility model proposes an injection molding equipment for processing a dual-color display window of a washing machine control panel, which includes an injection molding machine body and a moving mold and a fixed mold arranged opposite to each other. The injection molding machine body has a first injection nozzle and a second injection nozzle.

[0008] The fixed mold includes a first fixed mold and a second fixed mold arranged linearly, and the moving mold can move horizontally back and forth and the distance between the moving mold and the first fixed mold and the second fixed mold is adjustable;

[0009] Both the first and second fixed molds are equipped with mold cores that are compatible with the main injection cavity in the moving mold, and the second fixed mold has an auxiliary injection cavity located on the outer end face of the mold core.

[0010] When the moving mold and the first fixed mold are closed for injection molding, the front frame of the window is formed in the main injection cavity of the moving mold;

[0011] When the moving mold and the second fixed mold are closed for injection molding, the back frame of the window, which is connected to the front frame of the window, is formed in the auxiliary injection cavity of the second fixed mold.

[0012] Traditional two-color injection molding methods suffer from high costs, difficult modifications, and large space requirements. This equipment's fixed mold consists of a linearly arranged first and second fixed mold. This design breaks with convention. The moving mold can move horizontally back and forth, and the distance between it and the two fixed molds can be flexibly adjusted for easy mold closing. The mold cores on the first and second fixed molds are adapted to the main injection cavity of the moving mold, ensuring that the plastic is evenly filled when injecting the front frame of the window, thus guaranteeing product quality. The auxiliary injection cavity on the second fixed mold is specifically used to form the rear frame of the window and can be connected to the previously formed front frame of the window. Through the mold closing operation of the moving mold and different fixed molds, the step-by-step injection molding of the two-color display window is realized, avoiding the use of expensive two-color injection molding machines and complex mold insert modifications, effectively reducing costs and equipment footprint.

[0013] As a further optimization of this utility model, the equipment also includes a bracket and a fixing plate. The injection molding machine body is installed at the upper end of the bracket, and the fixing plate is installed at the rear end of the bracket for installing the first fixed mold and the second fixed mold.

[0014] The bracket provides a stable support foundation for the entire injection molding equipment, ensuring that the equipment remains stable during operation. The injection molding machine body is installed on the upper part of the bracket, ensuring that its height is convenient for operation and maintenance. The first and second injection nozzles extend above the corresponding injection ports, making the injection process more precise, and the plastic can be accurately injected into the main injection cavity and the auxiliary injection cavity.

[0015] The fixing plate is installed at the rear end of the bracket to fix the first and second fixed molds, ensuring the positional accuracy of the fixed molds and preventing displacement of the fixed molds during injection molding, which would affect product quality.

[0016] Furthermore, the equipment also includes a horizontal displacement mechanism installed at the front end of the support. The movement trajectory of the horizontal displacement mechanism is parallel to the length direction of the fixed plate. The moving mold is installed on the moving end of the horizontal displacement mechanism, and the mold closing surface of the moving mold is parallel to the mold closing surfaces of the first fixed mold and the second fixed mold.

[0017] The horizontal displacement mechanism is a key component for realizing the horizontal reciprocating movement of the moving mold. Its movement trajectory is parallel to the length direction of the fixed plate, ensuring that the moving mold can be accurately changed during movement. The moving mold is installed on the moving end of the horizontal displacement mechanism, so that the movement of the moving mold can be precisely controlled. The moving mold and the fixed mold mating surface are parallel, ensuring the accuracy of mold mating and avoiding gaps or misalignments during mold mating, thereby reducing product defects and scrap rates and improving product quality.

[0018] Furthermore, the side of the bracket is equipped with a linear slide rail that drives the horizontal displacement mechanism to move closer to or away from the fixed plate, providing a stable guide for the horizontal displacement mechanism. It drives the horizontal displacement mechanism to move closer to or away from the fixed plate, thereby adjusting the distance between the moving mold and the fixed mold for mold closing and demolding operations.

[0019] As a further optimization of this utility model, the upper end face of the moving mold has two injection ports, and the upper end face of the upper mold core of the second fixed mold has a through hole that communicates with the auxiliary injection cavity. The first injection port is directly connected to the main injection cavity, and the second injection port is connected to the auxiliary injection cavity through the through hole.

[0020] The design of two injection ports on the moving mold is to accommodate the injection requirements of different colored plastics. The first injection port is directly connected to the main injection cavity and is used to inject the plastic for molding the front frame of the window. The second injection port is connected to the auxiliary injection cavity through a through hole on the second fixed mold core and is used to inject the plastic for molding the back frame of the window. This design ensures that plastics of different colors can be accurately injected into the corresponding cavities, avoiding plastic mixing and leakage, and improving the injection precision and product quality.

[0021] Furthermore, the axis of the first injection port coincides with the axis of the first injection nozzle, and its depth is consistent with the insertion depth of the first injection nozzle. The axis of the second injection port coincides with the axis of the second injection nozzle, and the insertion depth of the second injection nozzle is consistent with the sum of the depths of the second injection port and the through hole.

[0022] The alignment and depth matching of the injection port and injection nozzle further improve the precision of injection molding. The cooperation between the first injection port and the first injection nozzle ensures that the plastic of the front frame of the molded window can be injected vertically and accurately into the main injection cavity, ensuring the uniformity of plastic filling. The cooperation between the second injection port and the second injection nozzle takes into account the situation where the second injection nozzle needs to pass through the through hole to reach the auxiliary injection cavity, ensuring that the plastic of the rear frame of the molded window can be injected smoothly, avoiding the problems of plastic accumulation or insufficient filling during the injection process, and improving production efficiency and product quality.

[0023] As a further optimization of this utility model, an ejection mechanism is installed at the rear end of the moving mold, and the movable end of the ejection mechanism extends into the interior of the moving mold and is flush with the inner wall of the main injection cavity, so that the molded dual-color display window can be smoothly ejected from the moving mold after injection molding.

[0024] As a further optimized solution of this utility model, there are two moving molds and two fixed molds, respectively set as moving mold A, moving mold B, second fixed mold A and second fixed mold B. The second fixed mold A and the second fixed mold B are symmetrically distributed on both sides of the first fixed mold. The moving mold A and the moving mold B are linearly arranged and move synchronously.

[0025] When the moving mold A and the first fixed mold are closed for injection molding, the front frame of the window is formed in the main injection cavity of the moving mold A. Then, the moving mold A moves backward and horizontally to the second fixed mold A for mold closing. The back frame of the window is formed in the auxiliary injection cavity and connected to the front frame of the window to obtain a two-color display window. The moving mold A moves backward and removes the two-color display window inside. At the same time as the moving mold A and the second fixed mold A are closed, the moving mold B and the first fixed mold are closed to perform injection molding of the front frame of the window. When the two-color display window in the moving mold A is finished, the front frame of the window in the moving mold B is formed. The moving molds A and B are reset. The moving mold A continues to be closed for injection molding with the first fixed mold, while the moving mold B is closed for injection molding with the second fixed mold B to obtain the back frame of the window, thus obtaining the second two-color display window. Repeating the operation can achieve uninterrupted injection molding.

[0026] Increasing the number of moving molds and second fixed molds and adopting a specific layout and working method greatly improves production efficiency. Moving molds A and B are arranged linearly and move synchronously, allowing different stages of injection molding operations to be performed at the same time.

[0027] For example, when the moving mold A and the second fixed mold A are closed to inject the rear frame of the window, the moving mold B can be closed to the first fixed mold to inject the front frame of the window, achieving uninterrupted production. This alternating working method reduces the idle time of the equipment, shortens the production cycle, meets the needs of large-scale production, and greatly improves production efficiency compared with traditional injection molding methods.

[0028] The injection molding equipment for processing the dual-color display window of the washing machine control panel proposed in this utility model has the following beneficial effects:

[0029] (i) This equipment uses a unique mold design, employing a linearly arranged first and second fixed mold, combined with a horizontally reciprocating moving mold to achieve two-color injection molding. This eliminates the need to purchase expensive two-color injection molding machines, greatly reducing equipment procurement costs. At the same time, it avoids the complex and costly mold insert modification process, reducing the risk of mold scrapping and modification costs caused by mold modification, effectively alleviating the financial pressure on enterprises and improving the efficiency of enterprise capital utilization.

[0030] (II) This equipment increases the number of moving molds and second fixed molds, setting up moving mold A, moving mold B, second fixed mold A and second fixed mold B, with moving mold A and moving mold B arranged linearly and moving synchronously. During the production process, when moving mold A and second fixed mold A are closed to inject the back frame of the window, moving mold B can be closed to the first fixed mold to inject the front frame of the window, realizing uninterrupted production. This alternating working mode reduces the idle time of the equipment, greatly shortens the production cycle, improves production efficiency, meets the needs of large-scale production, and enhances the market competitiveness of enterprises.

[0031] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] Figure 1 This is a front structural diagram of the present invention;

[0033] Figure 2 A top view of the structure during the mold-closing stage of the moving mold and the first fixed mold of this utility model;

[0034] Figure 3 A top view of the structure during the mold-closing stage of the moving mold and the second fixed mold of this utility model;

[0035] Figure 4 This is a top cross-sectional view of the moving mold and the first fixed mold closing stage of this utility model.

[0036] Figure 5 This is a top cross-sectional view of the moving mold and the second fixed mold closing stage of this utility model.

[0037] Figure 6 This is a partial top view of an embodiment of the present invention.

[0038] Figure descriptions: 1. Injection molding machine body; 2. First injection nozzle; 3. Second injection nozzle; 4. Moving mold; 41. Moving mold A; 42. Moving mold B; 5. First fixed mold; 6. Second fixed mold; 61. Second fixed mold A; 62. Second fixed mold B; 7. Mold core; 8. Auxiliary injection cavity; 9. Support; 10. Fixing plate; 11. Horizontal displacement mechanism; 12. Ejection mechanism; 13. Front frame of the form; 14. Back frame of the form. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0040] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] In the field of injection molding machine technology, the traditional dual-color display window injection molding method for washing machine control panels suffers from problems such as high cost, difficulty in modification, and low efficiency. This utility model's injection molding equipment solves these problems through an innovative structural design, the specific implementation of which is as follows:

[0042] like Figures 1-5 As shown, the injection molding equipment mainly consists of the injection molding machine body 1, the moving mold 4, the fixed mold including the first fixed mold 5 and the second fixed mold 6, and other auxiliary components.

[0043] like Figure 1 As shown, the injection molding machine body 1 is installed on the upper end of the bracket 9. The bracket 9 provides stable support for the entire equipment, ensuring stable operation and convenient operation and maintenance. A fixing plate 10 is installed at the rear end of the bracket 9 to fix the first fixed mold 5 and the second fixed mold 6, ensuring the positional accuracy of the fixed mold and avoiding displacement of the fixed mold during injection molding that would affect product quality.

[0044] like Figure 2 and Figure 3As shown, the first fixed mold 5 and the second fixed mold 6 are arranged linearly, and each of them is equipped with a mold core 7 that is compatible with the main injection cavity in the moving mold 4. The second fixed mold 6 is also provided with an auxiliary injection cavity 8 located on the outer end face of the mold core 7. The moving mold 4 can move horizontally back and forth, and the distance between it and the first fixed mold 5 and the second fixed mold 6 can be flexibly adjusted. This function depends on the horizontal displacement mechanism 11 installed at the front end of the bracket 9.

[0045] The movement trajectory of the horizontal displacement mechanism 11 is parallel to the length direction of the fixed plate 10. The moving mold 4 is installed on its moving end, and the mold closing surface of the moving mold 4 is parallel to the mold closing surfaces of the first fixed mold 5 and the second fixed mold 6. In addition, a linear slide rail is installed on the side of the bracket 9 to drive the horizontal displacement mechanism 11 to move closer to or away from the fixed plate 10, thereby realizing the precise adjustment of the distance between the moving mold 4 and the fixed mold, and meeting the needs of mold closing and demolding operations.

[0046] The upper end face of the moving mold 4 is provided with two injection ports. The first injection port is directly connected to the main injection cavity, and the second injection port is indirectly connected to the auxiliary injection cavity 8 through a through hole opened on the upper end face of the upper mold core 7 of the second fixed mold 6. During injection, the first injection nozzle 2 and the second injection nozzle 3 of the injection molding machine body 1 work in accordance with the two injection ports respectively.

[0047] The axis of the first injection port coincides with the axis of the first injection nozzle 2, and its depth is consistent with the insertion depth of the first injection nozzle 2. The axis of the second injection port coincides with the axis of the second injection nozzle 3, and the insertion depth of the second injection nozzle 3 is consistent with the sum of the depths of the second injection port and the through hole. This ensures that plastics of different colors can be accurately and uniformly injected into the corresponding cavities, thereby improving injection molding accuracy and product quality.

[0048] An ejection mechanism 12 is installed at the rear end of the moving mold 4. The movable end of the ejection mechanism 12 extends into the moving mold 4 and is flush with the inner wall of the main injection cavity. After injection molding is completed, the ejection mechanism 12 can smoothly eject the molded two-color display window from the moving mold 4.

[0049] like Figure 6 As shown, based on the above structure, a specific embodiment is optimized as follows:

[0050] There are two moving molds and two fixed molds, namely moving mold A41, moving mold B42, second fixed mold A61 and second fixed mold B62. The second fixed mold A61 and the second fixed mold B62 are symmetrically distributed on both sides of the first fixed mold 5. The moving mold A41 and the moving mold B42 are linearly arranged and move synchronously.

[0051] During operation, the moving mold A41 closes with the first fixed mold 5, and the front frame 13 of the window is injection molded in the main injection cavity of the moving mold A41. Then, the moving mold A41 moves backward and horizontally to the second fixed mold A61 to close, and the rear frame 14 of the window connected to the front frame 13 is formed in the auxiliary injection cavity 8, thus obtaining the dual-color display window. Then, the moving mold A41 moves backward to remove the dual-color display window.

[0052] While the moving mold A41 and the second fixed mold A61 are closing, the moving mold B42 and the first fixed mold 5 are closing to perform injection molding of the front frame 13 of the window. When the dual-color display window in the moving mold A41 is finished being injected, the front frame 13 of the window in the moving mold B42 is also formed. At this time, the moving mold A41 and the moving mold B42 are reset. The moving mold A41 continues to close with the first fixed mold 5 for injection molding, while the moving mold B42 closes with the second fixed mold B62 to perform injection molding of the back frame 14 of the window. This cycle is repeated to achieve uninterrupted injection molding and greatly improve production efficiency.

[0053] In summary, through the above structural design, the injection molding equipment of this utility model utilizes a unique mold structure to achieve two-color injection molding, avoiding the use of expensive two-color injection molding machines and complex mold insert modifications, reducing equipment procurement and modification costs, reducing equipment floor space, and improving production efficiency to meet the needs of large-scale production.

[0054] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An injection molding device for processing a dual-color display window for a washing machine control panel, comprising an injection molding machine body (1) and a moving mold (4) and a fixed mold arranged opposite to each other, the injection molding machine body (1) having a first injection nozzle (2) and a second injection nozzle (3), characterized in that: The fixed mold includes a first fixed mold (5) and a second fixed mold (6) arranged in a linear manner. The moving mold (4) can move horizontally back and forth and the distance between it and the first fixed mold (5) and the second fixed mold (6) is adjustable. Both the first fixed mold (5) and the second fixed mold (6) are equipped with mold cores (7) that are compatible with the main injection cavity in the moving mold (4). The second fixed mold (6) has an auxiliary injection cavity (8) located on the outer end face of the mold core (7). When the moving mold (4) and the first fixed mold (5) are closed for injection molding, the front frame (13) of the window is formed in the main injection cavity of the moving mold (4). When the moving mold (4) and the second fixed mold (6) are closed for injection molding, the back frame (14) of the window connected to the front frame (13) is formed in the auxiliary injection cavity (8) of the second fixed mold (6).

2. The injection molding equipment for processing a dual-color display window of a washing machine control panel according to claim 1, characterized in that, It also includes a bracket (9) and a fixing plate (10). The injection molding machine body (1) is installed on the upper end of the bracket (9), and the fixing plate (10) is installed on the rear end of the bracket (9) for installing the first fixed mold (5) and the second fixed mold (6).

3. The injection molding equipment for processing a dual-color display window of a washing machine control panel according to claim 2, characterized in that, It also includes a horizontal displacement mechanism (11) installed at the front end of the bracket (9). The movement trajectory of the horizontal displacement mechanism (11) is parallel to the length direction of the fixed plate (10). The moving mold (4) is installed on the moving end of the horizontal displacement mechanism (11), and the mold closing surface of the moving mold (4) is parallel to the mold closing surfaces of the first fixed mold (5) and the second fixed mold (6).

4. The injection molding equipment for processing a dual-color display window of a washing machine control panel according to claim 3, characterized in that, The side of the bracket (9) is equipped with a linear slide rail that drives the horizontal displacement mechanism (11) to approach or move away from the fixed plate (10).

5. The injection molding equipment for processing a dual-color display window of a washing machine control panel according to claim 1, characterized in that, The upper surface of the moving mold (4) has two injection ports. The upper surface of the upper mold core (7) of the second fixed mold (6) has a through hole that communicates with the auxiliary injection cavity (8). The first injection port is directly connected to the main injection cavity, and the second injection port is connected to the auxiliary injection cavity (8) through the through hole.

6. The injection molding equipment for processing a dual-color display window of a washing machine control panel according to claim 5, characterized in that, The axis of the first injection port coincides with the axis of the first injection nozzle (2), and the depth is consistent with the insertion depth of the first injection nozzle (2). The axis of the second injection port coincides with the axis of the second injection nozzle (3), and the insertion depth of the second injection nozzle (3) is consistent with the sum of the depths of the second injection port and the through hole.

7. The injection molding equipment for processing a dual-color display window of a washing machine control panel according to claim 1, characterized in that, The rear end of the moving mold (4) is equipped with an ejector mechanism (12), and the movable end of the ejector mechanism (12) extends into the moving mold (4) and is flush with the inner wall of the main injection cavity.

8. An injection molding device for processing a dual-color display window of a washing machine control panel according to any one of claims 1-7, characterized in that, There are two moving molds (4) and two fixed molds (6), namely moving mold A (41), moving mold B (42), second fixed mold A (61) and second fixed mold B (62). The second fixed mold A (61) and the second fixed mold B (62) are symmetrically distributed on both sides of the first fixed mold (5). Moving mold A (41) and moving mold B (42) are linearly arranged and move synchronously.

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