Die-casting shaping die for end cover machining

Abstract

The utility model provides a die-casting reshaping die for processing an end cover, which relates to the field of reshaping dies and comprises an upper die and a lower die, a forming table is further arranged between the upper die and the lower die, four sliding blocks which are arranged in a crisscross manner are slidably mounted at the top of the forming table, and elastic pieces for the four sliding blocks to slide and reset are further arranged on the edge of the forming table. A forming inner core is further arranged at the top of the forming table and located in the space between the inner side walls of the four sliding blocks, thread lines are arranged on the inner side walls of the four sliding blocks, one sides of the four sliding blocks are obliquely arranged outwards, sliding grooves matched with the inclined faces of the four sliding blocks are formed in the bottom of the upper mold, and an end cap for forming an end cover is arranged at the bottom of the upper mold. The output end of the injection molding mechanism starts injection molding from the inside, firstly, an injection molding solution firstly makes contact with threaded grooves in the inner side walls of the four sliding blocks, continues to fill upwards after filling and firstly fills from the threaded grooves, and the situation that due to the fact that the cooling speed of molten plastic is high, plastic filling at the threaded structure of a forming mold cavity is not uniform is avoided.

Description

Technical Field

[0001] The utility model relates to the field of plastic molds, and particularly relates to a die-casting plastic mold for end cover processing. Background Art

[0002] The filter industry is in short supply, and its production capacity far lags behind the growth rate of demand. The air filter is located in the engine intake system and is an assembly composed of one or several filter components for cleaning air. Its main function is to filter out harmful impurities in the air to enter the cylinder, so as to reduce the early wear of the cylinder, piston, piston ring, valve and valve seat. The engine has three filters: air filter, oil filter and fuel filter, which are generally called "three filters".

[0003] At present, the end covers of filters are mainly formed by injection molding, that is, at a certain temperature, the completely molten plastic material is injected into the mold cavity under high pressure and cooled and solidified to obtain the required end cover shape. At the same time, in order to adapt to the corresponding space at the engine intake end, the connection parts of the end covers of some filters are usually designed in a threaded shape. There are many uneven places in the corresponding mold cavity of the threaded end cover, and the cooling speed of the molten plastic is relatively fast, resulting in uneven plastic filling at some threaded structures.

[0004] Therefore, it is necessary to provide a new die-casting plastic mold for end cover processing to solve the above technical problems. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides a die-casting plastic mold for end cover processing.

[0006] The die-casting plastic mold for end cover processing provided by the utility model includes an upper mold and a lower mold. There is also a forming table between the upper mold and the lower mold. Four sliders arranged in a cross shape are slidably installed on the top of the forming table, and elastic members for sliding the four sliders back to their original positions are also arranged at the edge of the forming table. The space between the inner side walls of the four sliders forms a cylinder. A forming core is also arranged on the top of the forming table, and the forming core is located in the space between the inner side walls of the four sliders.

[0007] Thread lines are arranged on the inner side walls of the four sliders. One side of the four sliders is inclined outward, and a chute matching the inclined surfaces of the four sliders is arranged at the bottom of the upper mold. A end cap for end cover forming is arranged at the bottom of the upper mold.

[0008] The lower mold is connected to the forming table through a plurality of elastic telescopic members. An injection molding mechanism is also arranged in the lower mold. One end of the injection molding mechanism passes through the forming table and passes through one side of the forming core, and one end of the injection molding mechanism extends into the space between the inner side walls of the four sliders.

[0009] Furthermore, a plurality of inner supports are provided inside the lower mold, the tops of the plurality of inner supports respectively pass through the molding table and the molding inner core, and the inner side walls of the plurality of inner supports adjacent to the tops are fitted with the tops of the molding inner core.

[0010] Furthermore, a plurality of placement grooves matching the inner support are provided on the top of the molded inner core, and the plurality of inner support are slidably installed in the plurality of placement grooves respectively.

[0011] Furthermore, a plurality of positioning columns are provided inside the molding inner core, and the plurality of positioning columns are respectively fixedly installed on the top of the molding table.

[0012] Furthermore, the injection molding mechanism includes two opposite injection molding tubes and a connecting nozzle, the two injection molding tubes are respectively fixedly installed inside the lower mold, and one end of the two injection molding tubes extends to the outside of the lower mold, and the other ends of the two injection molding tubes are respectively connected to the inner cavity of the connecting nozzle, and the two ends of the connecting nozzle respectively extend to the space between the inner walls of the four sliders.

[0013] Furthermore, the elastic member includes a spring, and two ends of the spring are respectively fixedly connected to the side wall of the forming table and the inner side wall of the sliding block.

[0014] Furthermore, the elastic telescopic part includes a telescopic rod and a compression spring sleeved on the outer surface of the telescopic rod, the two ends of the telescopic rod are respectively fixedly connected to the lower mold and the forming table, and the two ends of the compression spring are respectively fixedly connected to the top of the lower mold and the bottom of the forming table.

[0015] Compared with the related art, the die-casting shaping mold for end cover processing provided by the utility model has the following beneficial effects:

[0016] 1. The output end of the injection molding mechanism of the utility model starts injection molding from the inside. First, the injection solution contacts the thread grooves on the inner walls of the four sliders. After filling, it continues to fill upwards, and fills from the thread grooves first to avoid uneven plastic filling at the thread structure of the molding cavity due to the rapid cooling of the molten plastic.

[0017] 2. When the inclined surface of the slider is separated from the slide groove surface at the bottom of the upper mold, the slider is driven to slide outward under the rebound force of the elastic member. At this time, the thread grooves on the inner walls of the four sliders are separated from the thread grooves on the surface of the formed end cover, which facilitates the removal and unloading of the finished end cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the overall structure of the die-casting shaping mold for end cap processing provided by the utility model;

[0019] Figure 2Explosion structure schematic diagram of the die-casting shaping die for end cover processing provided by the present utility model;

[0020] Figure 3 Structure schematic diagram of the forming table and the lower die provided by the present utility model;

[0021] Figure 4 is Figure 3 Enlarged structure schematic diagram of the position A shown in;

[0022] Figure 5 Structure schematic diagram of the forming table provided by the present utility model Figure 1 ;

[0023] Figure 6 is Figure 5 Enlarged structure schematic diagram of the position B shown in;

[0024] Figure 7 Structure schematic diagram of the forming table provided by the present utility model Figure 2 ;

[0025] Figure 8 Bottom view structure schematic diagram of the upper die provided by the present utility model;

[0026] Figure 9 Structure schematic diagram of the forming inner core provided by the present utility model;

[0027] Figure 10 Structure schematic diagram of the injection mechanism provided by the present utility model.

[0028] Reference numerals in the figure: 1. Upper die; 2. Lower die; 3. Forming table; 4. Slide block; 5. Forming inner core; 6. Chute; 7. End cap; 8. Elastic telescopic member; 9. Inner support; 10. Placing groove; 11. Positioning column; 12. Injection pipe; 13. Connecting spray pipe; 14. Spring. Detailed implementation manners

[0029] The present utility model will be further described below in conjunction with the accompanying drawings and the implementation manners.

[0030] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 , wherein, Figure 1 Overall structure schematic diagram of the die-casting shaping die for end cover processing provided by the present utility model; Figure 2 Explosion structure schematic diagram of the die-casting shaping die for end cover processing provided by the present utility model; Figure 3A schematic diagram of the structure of the molding table and the lower mold provided by the utility model; Figure 4 for Figure 3 The enlarged structural schematic diagram of A shown; Figure 5 The structure diagram of the forming table provided by the utility model Figure 1 ; Figure 6 for Figure 5 An enlarged schematic diagram of the structure at B shown; Figure 7 The structure diagram of the forming table provided by the utility model Figure 2 ; Figure 8 A bottom view structural diagram of the upper mold provided by the utility model; Figure 9 A schematic diagram of the structure of the molded inner core provided by the utility model; Figure 10 This is a structural schematic diagram of the injection molding mechanism provided by the utility model.

[0031] In the specific implementation process, Figures 1 - 10 As shown, the die-casting shaping mold for end cover processing includes an upper mold 1 and a lower mold 2, a forming table 3 is further provided between the upper mold 1 and the lower mold 2, an end cap 7 for end cover molding is provided at the bottom of the upper mold 1, four sliders 4 arranged in a cross shape are slidably installed on the top of the forming table 3, and elastic members for sliding and resetting the four sliders 4 are further provided at the edge of the forming table 3, the space between the inner side walls of the four sliders 4 forms a cylindrical shape, a forming inner core 5 is further provided on the top of the forming table 3, and the forming inner core 5 is located in the space between the inner side walls of the four sliders 4, the inner side walls of the four sliders 4 are provided with thread lines, one side of the four sliders 4 is inclined outwardly, and a slide groove 6 matching the inclined surfaces of the four sliders 4 is provided at the bottom of the upper mold 1, and the space between the inner side wall of the end cap 7, the inner side walls of the four sliders 4 and the outer side wall of the forming inner core 5 forms the outline of the end cover;

[0032] It should be noted that the elastic member includes a spring 14, and the two ends of the spring 14 are fixedly connected to the side wall of the forming table 3 and the inner wall of the slider 4 respectively. When the inclined surface of the slider 4 is separated from the surface of the slide groove 6 at the bottom of the upper mold 1, the slider 4 is driven to slide outward under the rebound force of the spring 14. At this time, the thread grooves on the inner walls of the four sliders 4 are separated from the thread grooves on the surface of the formed end cap, which facilitates the removal and unloading of the finished end cap;

[0033] Furthermore, when the mold is used, the upper mold 1 is connected to the output end of the cylinder, and the cylinder is fixed on the bracket, and the upper mold 1 is driven by the cylinder to move up and down. The above-mentioned cylinder can also be an electric cylinder. Since this method is an existing well-known technology, it is not shown in detail in the figure.

[0034] The lower mold 2 is connected to the molding table 3 through a plurality of elastic telescopic members 8. An injection molding mechanism is further provided inside the lower mold 2. One end of the injection molding mechanism passes through the molding table 3 and passes through from one side of the molding inner core 5, and one end of the injection molding mechanism extends into the space between the inner side walls of the four sliders 4. The output end of the injection molding mechanism injects from the inside. First, the injection solution first contacts the threaded grooves on the inner side walls of the four sliders 4. After filling, it continues to fill upward. First, it fills the special-shaped parts to avoid the situation that the plastic filling in some special-shaped structures of the molding cavity is uneven due to the relatively fast cooling rate of the molten plastic.

[0035] A plurality of inner supports 9 are provided inside the lower mold 2. The tops of the plurality of inner supports 9 respectively pass through the molding table 3 and the molding inner core 5, and the inner side walls of the plurality of inner supports 9 near the top are in contact with the top of the molding inner core 5.

[0036] A plurality of placement grooves 10 matching the inner supports 9 are provided at the top of the molding inner core 5. A plurality of through grooves for the inner supports 9 to pass through are provided at the bottom of the molding inner core 5. The plurality of inner supports 9 are respectively slidably installed in the plurality of placement grooves 10.

[0037] A plurality of positioning columns 11 are provided inside the molding inner core 5. The plurality of positioning columns 11 are respectively fixedly installed on the top of the molding table 3. The molding inner core 5 is fixed by the plurality of positioning columns 11. The outer surface of the molding inner core 5 forms the inner side wall of the end cover, and the inner side walls of the four sliders 4 form the outer side wall of the end cover. When the upper mold 1 moves downward, it presses the molding table 3 to move downward. At this time, the plurality of inner supports 9 are separated from the top of the molding inner core 5. The tops of the plurality of inner supports 9 protrude outward to form grooves on the inner wall of the formed end cover. When the upper mold 1 moves upward, the molding table 3 moves upward under the resilience of the elastic telescopic members 8, and the plurality of inner supports 9 are in contact with the top of the molding inner core 5, avoiding the situation that the inner supports 9 are stuck in the grooves on the inner wall of the end cover, making it more troublesome to take out the end cover.

[0038] Reference Figure 10 As shown, the injection molding mechanism includes two opposite injection pipes 12 and a connecting spray pipe 13. The two injection pipes 12 are respectively fixedly installed inside the lower mold 2, and one end of each of the two injection pipes 12 extends to the outside of the lower mold 2. The other ends of the two injection pipes 12 are respectively communicated with the inner cavity of the connecting spray pipe 13. The two ends of the connecting spray pipe 13 respectively extend into the space between the inner side walls of the four sliders 4.

[0039] It should be noted that a valve is provided on the outer surface of the injection pipe 12. The number of injection pipes 12 is two. On the one hand, it can be used as two injection directions to speed up the injection time. On the other hand, it can be used for injection and cooling respectively. When used for cooling, cooling water is injected into one of the injection pipes 12 to speed up the cooling time. In addition, whether it is the liquid plastic required for injection molding the end cover or the cooling water, it is used through an external supply source, and the supply source is respectively connected to the two injection pipes 12.

[0040] The elastic telescopic member 8 includes a telescopic rod and a compression spring sleeved on the outer surface of the telescopic rod. The two ends of the telescopic rod are respectively fixedly connected to the lower mold 2 and the forming table 3, and the two ends of the compression spring are respectively fixedly connected to the top of the lower mold 2 and the bottom of the forming table 3.

[0041] The working principle provided by the present utility model is as follows: When the mold is in use, the upper mold 1 is connected to the output end of the cylinder, and the cylinder is fixed on the bracket. The upper mold 1 is driven by the cylinder to move up and down. The space between the inner side wall of the end cap 7, the inner side walls of the four sliders 4, and the outer side wall of the forming core 5 forms the contour of the end cover. When the upper mold 1 moves downward, it presses the forming table 3 to move downward. At this time, the multiple inner supports 9 are separated from the top of the forming core 5, and the tops of the multiple inner supports 9 protrude outward to form grooves on the inner wall of the formed end cover. When the upper mold 1 moves upward, the forming table 3 moves upward under the resilience of the elastic telescopic member 8, and the multiple inner supports 9 are attached to the top of the forming core 5, avoiding the situation that the inner supports 9 are stuck in the grooves formed on the inner wall of the end cover, which makes it more troublesome to take out the end cover. When the upper mold 1 moves downward, it presses the forming table 3 to move downward. At this time, the multiple inner supports 9 are separated from the top of the forming core 5, and the tops of the multiple inner supports 9 protrude outward to form grooves on the inner wall of the formed end cover. When the upper mold 1 moves upward, the forming table 3 moves upward under the resilience of the elastic telescopic member 8, and the multiple inner supports 9 are attached to the top of the forming core 5, avoiding the situation that the inner supports 9 are stuck in the grooves formed on the inner wall of the end cover, which makes it more troublesome to take out the end cover.

[0042] The circuits and controls involved in the present utility model are all prior arts and will not be elaborated here.

[0043] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A die-casting shaping mold for end cover processing, comprising an upper mold (1) and a lower mold (2), characterized in that, A forming table (3) is further provided between the upper mold (1) and the lower mold (2). Four sliders (4) arranged in a cross are slidably mounted on the top of the forming table (3), and an elastic member for sliding the four sliders (4) back to their original positions is further provided at the edge of the forming table (3). The space between the inner side walls of the four sliders (4) forms a cylinder. A forming core (5) is further provided on the top of the forming table (3), and the forming core (5) is located in the space between the inner side walls of the four sliders (4). Thread lines are provided on the inner side walls of the four sliders (4). One side of the four sliders (4) is inclined outward, and a chute (6) matching the inclined surfaces of the four sliders (4) is provided at the bottom of the upper mold (1). A end cap (7) for forming an end cover is provided at the bottom of the upper mold (1). The lower mold (2) and the forming table (3) are connected by a plurality of elastic telescopic members (8). An injection molding mechanism is further provided in the lower mold (2). One end of the injection molding mechanism passes through the forming table (3) and passes through from one side of the forming core (5), and one end of the injection molding mechanism extends into the space between the inner side walls of the four sliders (4).

2. The die-casting shaping mold for end cover processing according to claim 1, wherein A plurality of inner supports (9) are provided inside the lower mold (2). The tops of the plurality of inner supports (9) respectively pass through the forming table (3) and the forming core (5), and the inner side walls of the plurality of inner supports (9) near the top are in contact with the top of the forming core (5).

3. The die-casting shaping mold for end cover processing according to claim 2, characterized in that, A plurality of placement grooves (10) matching the inner supports (9) are provided at the top of the forming core (5), and the plurality of inner supports (9) are respectively slidably mounted in the plurality of placement grooves (10).

4. The die-casting and shaping mold for end cover processing according to claim 3, characterized in that, A plurality of positioning columns (11) are provided inside the forming core (5), and the plurality of positioning columns (11) are respectively fixedly mounted on the top of the forming table (3).

5. The die-casting shaping mold for end cover processing according to claim 4, wherein, The injection molding mechanism includes two opposite injection tubes (12) and a connecting spray tube (13). The two injection tubes (12) are respectively fixedly mounted inside the lower mold (2), and one end of each of the two injection tubes (12) extends outside the lower mold (2). The other ends of the two injection tubes (12) are respectively communicated with the inner cavity of the connecting spray tube (13), and both ends of the connecting spray tube (13) extend into the space between the inner side walls of the four sliders (4).

6. The die-casting shaping mold for end cover processing according to claim 5, characterized in that, The elastic member includes a spring (14), and both ends of the spring (14) are fixedly connected with the side wall of the forming table (3) and the inner side wall of the slider (4) respectively.

7. The die-casting and shaping mold for end cap processing according to claim 6, wherein, The elastic telescopic member (8) includes a telescopic rod and a compression spring sleeved on the outer surface of the telescopic rod. Both ends of the telescopic rod are fixedly connected with the lower mold (2) and the forming table (3) respectively, and both ends of the compression spring are fixedly connected with the top of the lower mold (2) and the bottom of the forming table (3) respectively.

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