A cage injection mold of a rapid preheating structure

Abstract

This utility model provides a cage injection mold with a rapid preheating structure, comprising: a moving mold at the bottom of a fixed mold; a sprue sleeve passing through the center of the fixed mold on the side away from the moving mold; a mold core assembly positioned at the center of the fixed mold and the moving mold on the side close to each other; a hot runner heating module sleeved on the bottom of the sprue sleeve at the top; and a heating rod heating module passing through the center of the mold core assembly; and several junction boxes bolted to the side walls of the fixed mold and the moving mold. In the mold preheating process, based on heat conduction heating using a mold temperature controller, a hot runner heating module and a heating rod heating module are installed at the core of the mold. These are connected to a power plug via junction boxes to achieve electric heating at the core, which assists in rapid mold preheating and greatly improves processing efficiency. During injection, the temperature of the liquid plastic does not drop when it enters the molding cavity composed of the fixed mold core and the moving mold core, improving the quality of the injection molded parts. Furthermore, the injection runner can be diverted to allow one mold to process multiple injection molded parts simultaneously, improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bearing parts processing, and in particular to the field of cage molding technology, specifically a cage injection mold with a rapid preheating structure. Background Technology

[0002] The existing cages are processed by injection molding because the material properties of the material require the mold to be preheated to 200°C before injection molding. The current method of heating the mold is to use a single-oil mold temperature controller, which requires heating for 70-80 minutes before each injection, which is very inefficient. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a cage injection mold with a rapid preheating structure to solve the difficulties of the prior art.

[0004] To achieve the above and other related objectives, this utility model provides a cage injection mold with a rapid preheating structure, comprising:

[0005] Fixed mold 1, with a movable mold 2 provided at its bottom;

[0006] The sprue sleeve 3 is inserted through the center of the fixed mold 1 on the side away from the moving mold 2;

[0007] The mold core assembly is positioned in the center of the side where the fixed mold 1 and the moving mold 2 are close to each other;

[0008] Hot runner heating module 7, the top of which is sleeved on the bottom of the sprue sleeve 3, and the bottom of which is connected to the mold core assembly;

[0009] A heating rod heating module 8 is inserted through the center of the mold core assembly;

[0010] Junction box 9, several of which are provided, are bolted to the side wall of the fixed mold 1 and the moving mold 2.

[0011] According to the preferred embodiment, the core assembly includes:

[0012] Fixed mold core 4, which is positioned in the center of the fixed mold 1 on the side closest to the moving mold 2;

[0013] The moving mold core 5 is positioned at the center of the top of the moving mold 2.

[0014] The assembly positioning block 6 is located on the left and front side or right and rear side of the fixed mold core 4 and the moving mold core 5. The assembly positioning block 6 is connected to the fixed mold 1 or the moving mold 2 by bolts. The top and bottom of the assembly positioning block 6 are provided with chamfers.

[0015] According to the preferred embodiment, the hot runner heating module 7:

[0016] The flow-diverting heating constant temperature block 71 has a No. 1 assembly slot 72 opened in the center of its top, and the flow-diverting heating constant temperature block 71 is fitted onto the bottom of the sprue sleeve 3 through the No. 1 assembly slot 72.

[0017] The upper flow channel 73 is located in the center of the flow-dividing heating constant temperature block 71. The upper flow channel 73 is T-shaped, and the top of the upper flow channel 73 is connected to the first assembly slot 72.

[0018] The lower flow channel 74 is evenly spaced at the bottom of the flow-dividing heating constant temperature block 71. The top of the lower flow channel 74 is connected to the upper flow channel 73. The side of the lower flow channel 74 away from the gate sleeve 3 is the second assembly slot 75.

[0019] The top of the guide tube 76 is fitted into the second assembly slot 75, and the bottom of the guide tube 76 is connected to the fixed mold core 4.

[0020] Heating tank 77 is located at the top and bottom of the flow-dividing heating constant temperature block 71. The heating tank 77 is rectangular and is arranged around the flow guide tube 76 or the sprue sleeve 3. A first heating wire 78 is installed inside the heating tank 77. The first heating wire 78 is connected to the junction box 9 through an electric wire.

[0021] According to the preferred embodiment, the heating rod heating module 8 includes:

[0022] Heating holes 81 are respectively spaced apart at the top of the fixed mold core 4 and the bottom of the moving mold core 5;

[0023] The second heating wire 82 is inserted into the heating hole 81. A connecting piece 83 is provided on one side of the second heating wire 82. The connecting piece 83 is fixed to the side wall of the fixed mold core 4 or the moving mold core 5 by bolts.

[0024] A protective sleeve 84 is fitted onto the outside of the second heating wire 82. A power supply copper sleeve 85 is provided on one side of the protective sleeve 84. The inner wall of the power supply copper sleeve 85 is connected to the second heating wire 82, and the outer wall of the power supply copper sleeve 85 is connected to the junction box 9 via an electric wire.

[0025] This utility model employs a fixed mold, sprue bushing, mold core assembly, hot runner heating module, and junction box. Building upon the heat conduction heating achieved by a mold temperature controller during the mold preheating process, a hot runner heating module and a heating rod heating module are installed at the core of the mold. These are connected to a power supply plug via the junction box to achieve electric heating at the core, achieving the following beneficial effects:

[0026] (1) The mold temperature can be preheated to 200°C in just 20 minutes, which greatly improves the processing efficiency;

[0027] (2) The hot runner heating module ensures that the temperature of the liquid plastic does not drop when it enters the molding cavity composed of the fixed mold core 4 and the moving mold core 5 during injection, thereby reducing the occurrence of air holes in the injection molded parts, improving the quality of the injection molded parts, and can also divert the injection runner to enable one mold to process multiple injection molded parts at the same time, thereby improving production efficiency.

[0028] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, so as to facilitate an understanding of the features and advantages of the present invention. Attached Figure Description

[0029] Figure 1 The diagram shown is a schematic diagram of the fixed mold and moving mold frame structure in this utility model.

[0030] Figure 2 The diagram shows a three-dimensional structural schematic of the hot runner heating module and the heating rod heating module in this utility model.

[0031] Figure 3 The diagram shown is an enlarged three-dimensional structural schematic of the hot runner heating module in this utility model.

[0032] Figure 4 This is a cross-sectional view of the hot runner heating module in this utility model;

[0033] Figure 5 The diagram shown is an enlarged three-dimensional structural diagram of the mold core and heating rod heating module in this utility model.

[0034] Figure 6 This is a split view of the heating wire No. 2, the connecting piece, and the protective sleeve in this utility model;

[0035] Label Explanation

[0036] 1. Fixed mold; 2. Moving mold; 3. Sprue bushing; 4. Fixed mold core; 5. Moving mold core; 6. Assembly positioning block;

[0037] 7. Hot runner heating module; 71. Diverter heating thermostat block; 72. Assembly slot 1; 73. Upper flow channel; 74. Lower flow channel; 75. Assembly slot 2; 76. Guide tube; 77. Heating tank; 78. Heating wire 1;

[0038] 8. Heating rod / heating module; 81. Heating hole; 82. No. 2 heating wire; 83. Connecting piece; 84. Protective sleeve; 85. Power supply copper sleeve;

[0039] 9. Junction box; Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0041] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of protection of this utility model may have fewer components, have other components not shown in the drawings, different components, components arranged differently, or components with different connections, etc. Furthermore, two or more components shown in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0042] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “an” or “a” and similar terms do not necessarily indicate a quantity limitation. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0043] This utility model proposes a cage injection mold with a rapid preheating structure for use in injection molding processes. This utility model does not limit the type of cage to be processed, but the structure of the fixed mold 1, sprue sleeve 3, mold core assembly, hot runner heating module 7 and junction box 9 is particularly suitable for rapidly preheating the mold to a specific temperature.

[0044] In general, the rapid preheating structure of the cage injection mold proposed in this utility model mainly includes: a fixed mold 1, a sprue bushing 3, a mold core assembly, a hot runner heating module 7, and a junction box 9. (See also...) Figure 1 It shows the arrangement of the fixed mold 1, the sprue bushing 3, the mold core assembly, the hot runner heating module 7, and the junction box 9.

[0045] This invention proposes a rapid preheating structure for a retainer injection mold. In the mold preheating process, a mold temperature controller is used for heat conduction heating. A hot runner heating module 7 and a heating rod heating module 8 are set at the core of the mold. The core is electrically heated by connecting to a power plug through a junction box 9. The mold temperature can be preheated to 200°C in just 20 minutes, which greatly improves the processing efficiency.

[0046] The bottom of the fixed mold 1 is provided with a moving mold 2, and the sprue sleeve 3 is inserted through the center of the top of the fixed mold 1.

[0047] The aforementioned mold core assembly is positioned at the center of the side of the fixed mold 1 and the moving mold 2 that are close to each other. The mold core assembly includes: a fixed mold core 4, a moving mold core 5, and an assembly positioning block 6. The fixed mold core 4 is positioned at the center of the side of the fixed mold 1 that is close to the moving mold 2, and the moving mold core 5 is positioned at the center of the top of the moving mold 2. The assembly positioning block 6 is bolted to the left and front sides or the right and rear sides of the fixed mold core 4 and the moving mold core 5. The assembly positioning block 6 has chamfers at the top and bottom. All templates in the fixed mold 1 and the moving mold 2 are standard parts. The size of the fixed mold core 4 and the moving mold core 5 is smaller than the inner diameter of the mounting groove on the fixed mold 1 and the moving mold 2. This is to prevent the fixed mold core 4 and the moving mold core 5 from getting stuck on the fixed mold 1 or the moving mold 2 during the thermal expansion and contraction process after injection molding. When it is necessary to replace the mold core assembly, loosen the bolts that connect the assembly positioning block 6 to the fixed mold 1 or the moving mold 2. After removing the assembly positioning block 6, the corresponding mold core in the fixed mold 1 or the moving mold 2 can be removed. The top and bottom of the assembly positioning block 6 are chamfered. The chamfer can prevent the sharp edges from scratching the workers when replacing the mold core assembly.

[0048] The hot runner heating module 7 is fitted onto the bottom of the sprue sleeve 3. The bottom of the hot runner heating module 7 is connected to the mold core assembly. The hot runner heating module 7 includes: a flow-diverting heating and temperature-controlled block 71, an upper runner 73, a lower runner 74, a guide tube 76, and a heating groove 77. A first assembly groove 72 is formed in the center of the top of the flow-diverting heating and temperature-controlled block 71, which is fitted onto the bottom of the sprue sleeve 3 through the first assembly groove 72. The upper runner 73 is formed in the center of the flow-diverting heating and temperature-controlled block 71 and is T-shaped. The top of the upper runner 73 communicates with the assembly groove. Lower runners 74 are formed at equal intervals at the bottom of the flow-diverting heating and temperature-controlled block 71. The top of the lower runners 74 communicates with the upper runners 73. The side of the lower runner 74 furthest from the sprue sleeve 3 is the second assembly groove. The assembly slot 75 has a guide tube 76 installed at the top. The bottom of the guide tube 76 is connected to the fixed mold core 4. Heating slots 77 are opened at the top and bottom of the runner heating and constant temperature block. The heating slots 77 are rectangular and are opened around the guide tube 76 or the sprue sleeve 3. A heating wire 78 is installed in the heating slot 77. The heating wire 78 is connected to the junction box 9 through an electric wire. The hot runner heating module 7 can quickly preheat the sprue sleeve 3 and keep it heated during the injection process. During injection, it ensures that the temperature of the liquid plastic does not drop when it enters the molding cavity composed of the fixed mold core 4 and the moving mold core 5, reducing the occurrence of air holes in the injection molded parts, improving the quality of the injection molded parts, and allowing the injection runner to be diverted so that multiple injection molded parts can be processed at the same time with one mold, improving production efficiency.

[0049] The heating rod heating module 8 is installed in the center of the mold core assembly. The heating rod heating module 8 includes: heating holes 81, a second heating wire 82, and a protective sleeve 84. The heating holes 81 are respectively opened at intervals on the top of the fixed mold core 4 and the bottom of the moving mold core 5. The second heating wire 82 is installed in the heating holes 81. A connecting piece 83 is provided on one side of the second heating wire 82. The connecting piece 83 is fixed to the side wall of the fixed mold core 4 or the moving mold core 5 by bolts. The protective sleeve 84 is installed on the outside of the second heating wire 82. A power supply copper sleeve 85 is provided on one side of the protective sleeve 84. The inner side wall of the power supply copper sleeve 85 is connected to the second heating wire 82. The outer side wall of the power supply copper sleeve 85 is connected to the junction box 9 by wires.

[0050] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A cage injection mold with a rapid preheating structure, characterized in that, include: A fixed mold (1) is provided at the bottom of which a moving mold (2) is provided; A sprue bushing (3) is inserted through the center of the fixed mold (1) on the side away from the moving mold (2); The mold core assembly is positioned at the center of the side where the fixed mold (1) and the moving mold (2) are close to each other; Hot runner heating module (7), the top of the hot runner heating module (7) is sleeved on the bottom of the sprue sleeve (3), and the bottom of the hot runner heating module (7) is connected to the mold core assembly; Heating rod heating module (8), the heating rod heating module (8) is inserted through the center of the mold core assembly; Junction box (9), several junction boxes (9) are provided, and several junction boxes (9) are bolted to the side wall on one side of the fixed mold (1) and the moving mold (2).

2. The cage injection mold of the rapid preheating structure according to claim 1, characterized in that, The core assembly includes: Fixed mold core (4), which is located in the center of the fixed mold (1) near the moving mold (2); The moving mold core (5) is located at the center of the top of the moving mold (2); The assembly positioning block (6) is located on the left and front side or right and rear side of the fixed mold core (4) and the moving mold core (5). The assembly positioning block (6) is connected to the fixed mold (1) or the moving mold (2) by bolts. The top and bottom of the assembly positioning block (6) are provided with chamfers.

3. The cage injection mold of the rapid preheating structure according to claim 2, characterized in that, The hot runner heating module (7): The shunt heating constant temperature block (71) has a No. 1 assembly slot (72) in the center of its top, and the shunt heating constant temperature block (71) is fitted onto the bottom of the sprue sleeve (3) through the No. 1 assembly slot (72). The upper flow channel (73) is located in the center of the split heating constant temperature block (71). The upper flow channel (73) is T-shaped and the top of the upper flow channel (73) is connected to the first assembly slot (72). The lower flow channel (74) is evenly spaced at the bottom of the flow-dividing heating constant temperature block (71). The top of the lower flow channel (74) is connected to the upper flow channel (73). The side of the lower flow channel (74) away from the sprue sleeve (3) is the second assembly slot (75). The top of the guide tube (76) is fitted into the No. 2 assembly slot (75), and the bottom of the guide tube (76) is connected to the fixed mold core (4). Heating tank (77) is located at the top and bottom of the flow-diverting heating constant temperature block (71). The heating tank (77) is rectangular and is arranged around the guide tube (76) or the sprue sleeve (3). A heating wire (78) is installed inside the heating tank (77). The heating wire (78) is connected to the junction box (9) by an electric wire.

4. The cage injection mold of the rapid preheating structure according to claim 3, characterized in that, The heating rod heating module (8) includes: Heating holes (81) are respectively spaced apart at the top of the fixed mold core (4) and the bottom of the moving mold core (5); The second heating wire (82) is inserted into the heating hole (81). A connecting piece (83) is provided on one side of the second heating wire (82). The connecting piece (83) is fixed to the side wall of the fixed mold core (4) or the moving mold core (5) by bolts. A protective sleeve (84) is fitted on the outside of the second heating wire (82). A power supply copper sleeve (85) is provided on one side of the protective sleeve (84). The inner wall of the power supply copper sleeve (85) is connected to the second heating wire (82), and the outer wall of the power supply copper sleeve (85) is connected to the junction box (9) through a wire.

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