Zinc alloy power tool housing die casting mold slide feed mechanism

Abstract

The utility model provides a zinc alloy electric tool outer cover die casting die sliding block feeding mechanism belongs to mould technical field. It includes upper die and lower die, the lower die middle part is provided with the lower forming groove to the inward recessed arrangement. Upper forming surface, lower forming surface, first side forming surface and second side forming face combination form the forming cavity of adaptive shell structure, have solved the problem that the sliding block sheltering cannot middle pour, through the multidimensionally penetrating type feeding runner structure in feeding sliding block and vertical feeding runner, three -way shunt runner structure cooperation, make the molten metal can penetrate the sliding block of product side and enter the forming cavity, realize from the shell length or width middle pouring, through multidimensionally penetrating type feeding runner structure still can pour from the front and back different height of forming cavity without increasing injection tube, can furtherly promote the feeding effect, guarantee the shell forming quality.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a slider feeding mechanism for a zinc alloy power tool cover die casting mold. Background Technology

[0002] The die-casting of zinc alloy housings for power tools faces several technical challenges: First, due to the large length or width of the product, pouring from only the four corners can lead to uneven energy decay of the molten metal during flow, resulting in insufficient filling and density in areas far from the gate, directly affecting the structural strength of the housing. Second, the outer side of the housing is usually equipped with a slider, which obstructs the traditional mold from setting the gate in the middle of the length or width, making it difficult to achieve balanced filling of the molten metal from the middle to both sides, further aggravating molding defects. Third, the housing often has a certain height; if pouring from only a single height, the distribution of molten metal in the height direction will be significantly different, and the solidification speed of the upper and lower parts will be asynchronous, easily generating internal stress and deformation.

[0003] For example, a Chinese patent discloses a wet gearbox housing alloy die-casting mold [application number: 202220937745.0], which includes a lower mold, an upper mold at the upper end of the lower mold, a locking member at the upper end of the upper mold, a limit block at the upper end of the locking member, a locking rod at the lower end of the limit block, a slot at the connection between the locking rod and the lower mold and the upper mold, a connecting member at the lower end of the locking rod, and an installation hole at the connection between the connecting member and the lower mold. Utility Model Content

[0004] The purpose of this utility model is to address the above-mentioned problems by providing a slider feeding mechanism for die-casting molds of zinc alloy power tool covers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sliding block feeding mechanism for a die-casting mold of a zinc alloy power tool cover includes an upper mold and a lower mold. The lower mold has a recessed lower forming groove in the middle. The lower forming groove extends through the side walls of the lower mold on both sides, and a frustum-shaped lower forming insert with a narrower top and wider bottom protrudes from the middle of the groove. One end of the lower forming insert is connected to one side wall of the lower forming groove, and a gap exists between the other end of the lower forming insert and the other side wall of the lower forming groove. A bottom forming block with an arc-shaped outer surface protrudes from the lower end face of the lower forming insert into the gap. A first step protrudes from the lower forming groove at the gap, and the bottom of the bottom forming block is connected to the top surface of the first step. A lower forming surface composed of a first lower forming surface and a second lower forming surface is formed on the lower forming insert. An upper forming insert with an upper forming surface adapted to the second lower forming surface protrudes from the middle of the bottom of the upper mold. The block has a lower molding groove with two end plates abutting against the inner wall of the lower molding groove on its left and right sides. The upper edge of the middle part of the injection slide has a first side molding surface that matches the upper edge of the side wall of the lower molding insert. The injection slide has a first concave portion that matches the first step and a second concave portion that matches the bottom molding block on the side near the gap. The second concave portion has a second side molding surface that matches the first lower molding surface located at the bottom molding block. The upper molding surface, lower molding surface, first side molding surface and second side molding surface are combined to form a molding cavity. Two side injection channels are provided between the upper mold and the lower mold, and on the side near the connection between the lower molding insert and the lower molding groove. The top of the lower molding insert is provided with a three-way flow channel structure. The injection slide has a multi-dimensional through injection channel structure connected to the three-way flow channel structure.

[0007] In the aforementioned zinc alloy power tool cover die-casting mold slider feeding mechanism, the first lower forming surface extends from the upper edge of the two side walls on one side where the lower forming insert is connected to the inner wall of the lower forming groove to the top outer edge and outer surface of the bottom forming block. The second lower forming surface is recessed inward on the top surface of the lower forming insert and has an arc-shaped cross section. The two sides of the second lower forming surface are connected to the first lower forming surface.

[0008] In the aforementioned zinc alloy power tool housing die-casting mold slider feeding mechanism, the three-way diversion channel structure includes a diversion channel disposed on the top surface of the lower forming insert. The middle inner side of the diversion channel is connected to the second lower forming surface and both ends penetrate the side walls of the lower forming insert. Both ends of the diversion channel are respectively connected to the multi-dimensional through-type injection channel structure in the two injection sliders. The middle part of the diversion channel is provided with a first injection channel connected to the second lower forming surface. The lower forming insert is provided with an arc-shaped buffer plate protruding between the diversion channel and the second lower forming surface. The end of the first injection channel away from the diversion channel extends obliquely to the top surface of the arc-shaped buffer plate.

[0009] In the aforementioned zinc alloy power tool cover die-casting mold slider feeding mechanism, the arc-shaped buffer plate is inclinedly provided with a buffer post-gating channel connected to the second lower forming surface.

[0010] In the aforementioned zinc alloy power tool housing die-casting mold slider feeding mechanism, the multi-dimensional through-type gating channel structure includes a connecting channel disposed on the side of the gating slider near the branch channel. The inner end of the connecting channel is also provided with a fifth gating channel extending along the lower part of the first lower forming surface to the side away from the connection between the lower forming insert and the lower forming groove. The connecting channel can be connected to the end of the branch channel. A second gating channel is disposed through the gating slider. The inlet of the second gating channel is located in the connecting channel. At least one third gating channel connected to the second side forming surface is disposed at the bottom of the first concave portion. The outlet of the second gating channel is located in the third gating channel.

[0011] In the aforementioned zinc alloy power tool cover die-casting mold slider feeding mechanism, a buffer groove corresponding to the third inlet channel is recessed inward on the first step. The third inlet channel can be connected to the buffer groove, and the buffer groove is inclinedly provided with a buffer guide step towards the connection between the third inlet channel and the second side forming surface on the side near the first lower forming surface.

[0012] In the aforementioned zinc alloy power tool cover die-casting mold slider feeding mechanism, the connecting flow channel is further provided with an inclined fourth inlet flow channel on the side near the first forming surface.

[0013] In the aforementioned zinc alloy power tool cover die-casting mold slider feeding mechanism, a positioning structure is also provided between the lower forming insert and the injection slider.

[0014] In the aforementioned zinc alloy power tool cover die casting mold slider feeding mechanism, the positioning structure includes a positioning block inclinedly disposed at one end of the lower forming insert near the gap, the bottom of the positioning block extending to the upper surface of the bottom forming block, and the upper side of the second concave portion of the injection slider is provided with a positioning groove adapted to the positioning block.

[0015] In the aforementioned zinc alloy power tool cover die-casting mold slide feeding mechanism, the upper mold, lower mold, and injection slide are each independently equipped with a circulating cooling channel.

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] 1. The upper molding surface, lower molding surface, first side molding surface, and second side molding surface combine to form a molding cavity that adapts to the shell structure, solving the problem of the slider blocking the middle of the injection. Through the multi-dimensional through-flow injection channel structure in the injection slider, combined with the side injection channel and the three-way diversion channel structure, the molten liquid can pass through the slider on the side of the product and enter the molding cavity, realizing injection from the middle of the shell length or width. The multi-dimensional through-flow injection channel structure can also inject from different heights at the front and back of the molding cavity without adding injection tubes, which can further improve the injection effect and ensure the quality of shell molding.

[0018] 2. The three-way diversion channel structure adopts an arc-shaped diversion channel in conjunction with the first inlet channel to achieve multi-directional diversion of the molten liquid. An arc-shaped buffer plate is set between the diversion channel and the second lower forming surface to buffer the molten liquid. This design solves the problems of large impact and uneven distribution of molten liquid in traditional inlet channels, allowing the molten liquid to flow smoothly to the two side inlet slides while being poured into the area of ​​the second lower forming surface. This improves the uniformity of molten liquid filling and reduces internal defects in the casting. After buffering, the inlet channel is formed by the intersection of the arc-shaped buffer plate and the inner wall of the side inlet channel, connecting to the second lower forming surface. This structure further buffers the molten liquid flowing into the area of ​​the second lower forming surface, preventing the molten liquid from directly impacting the cavity wall, reducing surface defects caused by impact, and allowing the molten liquid to fill the area smoothly, ensuring the surface quality and forming accuracy of the corresponding parts of the shell.

[0019] 3. The buffer groove is set in correspondence with the third inlet runner. After buffering, the guide step is inclined towards the connection between the inlet and the side forming surface. The buffer groove buffers the molten liquid entering the third inlet runner, and the guide step guides the molten liquid to flow into the cavity. This solves the problem that the molten liquid is prone to forming eddies near the inlet, so that the molten liquid fills smoothly along the cavity wall, reduces bubbles and cold shut defects, and improves the accuracy of the casting.

[0020] 4. The multi-dimensional through-flow gate structure, through the cooperation of the connecting gate, the second gate, and the third gate, enables the molten metal to flow in multiple dimensions within the gate slide, pouring into the molding cavity from different heights and positions. This design solves the problem of poor pouring effect in the traditional single-height gate, adapts to the structural characteristics of the shell with a certain height, and allows the molten metal to fill the cavity height direction evenly, improving the overall density of the casting.

[0021] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the present invention;

[0024] Figure 3 This is a cross-sectional view of the present invention from another direction;

[0025] Figure 4 This is a schematic diagram of the overall structure of the lower template and the pouring slide block;

[0026] Figure 5 This is a structural diagram of the lower template;

[0027] Figure 6 This is a structural diagram of the upper template and the pouring slider;

[0028] Figure 7 This is a partial structural diagram of the lower template and the pouring slide block;

[0029] Figure 8 This is a partial exploded view of the lower template and the pouring block;

[0030] Figure 9 This is a schematic diagram of the pouring block structure;

[0031] Figure 10 yes Figure 1 Enlarged view of point A in the middle;

[0032] Figure 11 yes Figure 7 Enlarged view of point B in the middle;

[0033] Figure 12 This is an exploded view of this utility model;

[0034] Figure 13 yes Figure 12 A diagram from another direction.

[0035] In the figure, the components are: upper mold 1, lower mold 2, lower mold forming groove 4, lower mold forming insert 5, bottom forming block 6, first step 7, first lower forming surface 8, second lower forming surface 9, upper forming insert 10, injection slide block 11, first side forming surface 12, first inner recess 13, second inner recess 14, second side forming surface 15, forming cavity 16, side injection channel 17, three-way branching channel structure 18, multi-dimensional through injection channel structure 19, branching channel 20, first injection channel 21, arc-shaped buffer plate 22, buffered injection channel 23, connecting channel 24, second injection channel 25, third injection channel 26, buffer groove 27, buffered guide step 28, fourth injection channel 29, positioning block 30, positioning groove 31, circulating cooling channel 32, and fifth injection channel 100. Detailed Implementation

[0036] like Figures 1-13As shown, a slider feeding mechanism for a zinc alloy power tool cover die-casting mold includes an upper mold 1 and a lower mold 2. The lower mold 2 has a recessed lower forming groove 4 in the middle. The lower forming groove 4 extends through the sidewalls of the lower mold 2 on both sides, and a lower forming insert 5 with a truncated cone shape (narrower at the top and wider at the bottom) protrudes from the middle of the lower forming groove 4. One end of the lower forming insert 5 is connected to one sidewall of the lower forming groove 4, and there is a gap between the other end of the lower forming insert 5 and the other sidewall of the lower forming groove 4. The lower part of the side end face of the insert 5 protrudes into the gap to form a bottom forming block 6 with an arc-shaped outer surface. The lower forming groove 4 protrudes at the gap to form a first step 7. The bottom of the bottom forming block 6 is connected to the top surface of the first step 7. The lower forming insert 5 has a lower forming surface composed of a first lower forming surface 8 and a second lower forming surface 9. The middle position of the bottom of the upper mold 1 is provided with an upper forming insert 10 having an upper forming surface adapted to the second lower forming surface 9. The left and right sides of the lower forming groove 4 are provided with a pouring slide block 11 with both ends abutting against the inner wall of the lower forming groove 4. The upper edge of the middle part of the pouring slide block 11 has a first side forming surface 12 adapted to the first lower forming surface 8 located at the upper edge of the side wall of the lower forming insert 5. The side of the pouring slide block 11 near the gap has a first inner recess 13 adapted to the first step 7 and a second inner recess 14 adapted to the bottom forming block 6. The second inner recess 14 has a first lower forming surface 8 located at the bottom forming block 6. The upper molding surface 15, the lower molding surface, the first side molding surface 12 and the second side molding surface 15 are combined to form a molding cavity 16. Two side injection channels 17 are provided between the upper mold 1 and the lower mold 2 and on the side near the connection between the lower molding insert 5 and the lower molding groove 4. A three-way flow channel structure 18 is provided on the top of the lower molding insert 5. A multi-dimensional through injection channel structure 19 connected to the three-way flow channel structure 18 is provided inside the injection slider 11.

[0037] In this invention, the upper forming surface, lower forming surface, first side forming surface, and second side forming surface are combined to form a forming cavity adapted to the shell structure, solving the problem of the slider blocking the middle of the casting. Through the multi-dimensional through-flow channel structure in the casting slider, combined with the side casting channel and the three-way diversion channel structure, the molten metal can pass through the slider on the side of the product and enter the forming cavity, realizing casting from the middle of the shell length or width. The multi-dimensional through-flow channel structure can also cast from different heights at the front and back of the forming cavity without adding a gate sleeve, which can further improve the casting effect and ensure the quality of shell forming.

[0038] Specifically, the first lower forming surface 8 extends from the upper edges of the two side walls on one side where the lower forming insert 5 connects to the inner wall of the lower forming groove 4, to the top outer edge and outer surface of the bottom forming block 6. The second lower forming surface 9 is recessed inward on the top surface of the lower forming insert 5 and has an arc-shaped cross-section. The two sides of the second lower forming surface 9 are connected to the first lower forming surface 8. The first lower forming surface 8 extends from the upper edges of the two side walls on one side where the lower forming insert 5 connects to the inner wall of the lower forming groove 4, to the top outer edge and outer surface of the bottom forming block 6. The second lower forming surface is recessed and arc-shaped and connected to the first lower forming surface. This design optimizes the overall structure of the lower forming surface. This design allows the lower forming surface to fit more precisely with the upper forming surface and the first and second side forming surfaces, adapting to the complex shape of the shell, ensuring dimensional matching at all parts of the forming cavity, improving the casting forming accuracy, and laying the foundation for subsequent pouring uniformity.

[0039] Specifically, the three-way flow channel structure 18 includes a flow channel 20 disposed on the top surface of the lower molding insert 5. The middle inner side of the flow channel 20 is connected to the second lower molding surface 9 and both ends penetrate the side walls of the lower molding insert 5. Both ends of the flow channel 20 are respectively connected to the multi-dimensional through-type inlet flow channel structure 19 in the two inlet slides 11. The middle part of the flow channel 20 is provided with a first inlet flow channel 21 connected to the second lower molding surface 9. The lower molding insert 5 is provided with an arc-shaped buffer plate 22 protruding between the flow channel 20 and the second lower molding surface 9. The first inlet flow channel 21 extends obliquely to the top surface of the arc-shaped buffer plate 22 at the end away from the flow channel 20. The three-way flow channel structure uses an arc-shaped flow channel in conjunction with the first inlet flow channel to achieve multi-directional flow of molten metal. An arc-shaped buffer plate is set between the flow channel and the second lower forming surface to buffer the molten metal. This design solves the problems of large impact and uneven distribution of molten metal in traditional inlet pouring, allowing the molten metal to flow smoothly to the two inlet slides on both sides, while pouring into the area of ​​the second lower forming surface, improving the uniformity of molten metal filling and reducing internal defects in the casting.

[0040] Preferably, the arc-shaped buffer plate 22 is inclinedly provided with a buffer post-gating channel 23 connected to the second lower forming surface 9. The buffer post-gating channel is connected to the second lower forming surface. This structure further buffers the molten liquid flowing towards the area of ​​the second lower forming surface, preventing the molten liquid from directly impacting the cavity wall, reducing surface defects caused by impact, and allowing the molten liquid to fill the area smoothly, ensuring the surface quality and forming accuracy of the corresponding parts of the shell.

[0041] Specifically, the multi-dimensional through-type gating channel structure 19 includes a connecting channel 24 disposed on the side of the gating slider 11 near the branch channel 20. The inner end of the connecting channel 24 is also provided with a fifth gating channel 100 extending along the lower part of the first lower molding surface 8 to the side away from the connection between the lower molding insert 5 and the lower molding groove 4. The connecting channel 24 can be connected to the end of the branch channel 20. A second gating channel 25 is disposed through the gating slider 11. The inlet of the second gating channel 25 is located in the connecting channel 24. At least one third gating channel 26 connected to the second side molding surface 15 is disposed at the bottom of the first concave portion 13. The outlet of the second gating channel 25 is located in the third gating channel 26. The multi-dimensional through-flow gate structure, through the cooperation of the connecting gate, the second gate, and the third gate, enables the molten metal to flow in multiple dimensions within the gate slide block, pouring into the molding cavity from different heights and positions. This design solves the problem of poor pouring effect in traditional gates at the same height, adapts to the structural characteristics of shells with a certain height, and allows the molten metal to fill the cavity height direction evenly, thereby improving the overall density of the casting.

[0042] Preferably, a buffer groove 27 corresponding to the third inlet channel 26 is recessed inward on the first step 7. The third inlet channel 26 can be connected to the buffer groove 27, and the buffer groove 27 is inclinedly provided with a buffer guide step 28 facing the connection between the third inlet channel 26 and the second side forming surface 15 on the side near the first lower forming surface 8. The buffer groove is corresponding to the third inlet channel, and the buffer guide step is inclined towards the connection between the inlet and the side forming surface. The buffer groove buffers the molten metal entering the third inlet channel, and the guide step guides the molten metal to flow into the cavity. This solves the problem of eddies easily forming in the molten metal near the inlet, allowing the molten metal to fill smoothly along the cavity wall, reducing bubbles and cold shut defects, and improving the casting accuracy.

[0043] Preferably, the connecting channel 24 is further provided with an inclined fourth inlet channel 29 on the side near the first side molding surface 12. The inclined arrangement of the fourth inlet channel on the side of the connecting channel near the first side molding surface increases the distribution dimension of the inlet points. This design allows the molten metal to be poured from a position near the first side molding surface to supplement the molten metal supply to the side area of ​​the cavity, solving the problem of insufficient filling that may be caused by a single pouring direction, ensuring full molding of the side part of the shell, and improving the impact resistance.

[0044] Preferably, a positioning structure is also provided between the lower forming insert 5 and the gating slide block 11. The positioning structure between the lower forming insert and the gating slide block ensures the relative positional accuracy of the two when the mold is closed. This design solves the problem of dimensional deviation of the forming cavity caused by the relative displacement of the components, ensures the consistency and stability of the forming cavity, provides a precise spatial basis for uniform filling of the molten metal, and improves the dimensional accuracy and surface quality of the casting.

[0045] Specifically, the positioning structure includes a positioning block 30 inclinedly disposed near one end of the gap in the lower forming insert 5. The bottom of the positioning block 30 extends to the upper surface of the bottom forming block 6. The upper side of the second recessed portion 14 of the gating slide block 11 is recessed inward and has a positioning groove 31 adapted to the positioning block 30. The positioning block is inclinedly disposed at the end of the lower forming insert, and the positioning groove is adapted to the positioning block on the gating slide block to form a precise mating positioning. This structure enhances the positioning stability of the lower forming insert and the gating slide block, avoids relative offset during mold opening and closing, ensures the dimensional accuracy of key parts of the forming cavity, reduces casting flash or material shortage caused by inaccurate positioning, and improves the product qualification rate.

[0046] Preferably, the upper mold 1, lower mold, and gating slide 11 are each independently provided with a circulating cooling channel 32. These independent circulating cooling channels in the upper mold, lower mold, and gating slide can quickly remove heat generated during the die-casting process. This design addresses a cooling problem not mentioned in the background art, enabling rapid and uniform cooling and solidification of the zinc alloy molten metal. It solves the problem of casting deformation caused by uneven cooling, improves the dimensional stability and structural strength of the casting, enhances the impact resistance of the shell, and shortens the production cycle.

[0047] The working principle of this utility model is as follows: the upper molding surface, lower molding surface, first side molding surface, and second side molding surface are combined to form a molding cavity that adapts to the shell structure, which solves the problem of the slider blocking the middle of the injection. Through the multi-dimensional through-flow injection channel structure in the injection slider, combined with the side injection channel and the three-way diversion channel structure, the molten liquid can pass through the slider on the side of the product and enter the molding cavity, realizing injection from the middle of the shell length or width; through the multi-dimensional through-flow injection channel structure, injection can also be carried out from different heights at the front and back of the molding cavity without adding injection tubes, which can further improve the injection effect and ensure the quality of shell molding;

[0048] The three-way flow channel structure employs an arc-shaped flow channel in conjunction with the first inlet channel to achieve multi-directional flow of molten metal. An arc-shaped buffer plate is positioned between the flow channel and the second lower forming surface to buffer the molten metal. This design solves the problems of large molten impact and uneven distribution in traditional inlet casting, allowing the molten metal to flow smoothly to the two side inlet slides while simultaneously pouring into the second lower forming surface area. This improves the uniformity of molten metal filling and reduces internal defects in the casting. After buffering, the inlet channel is formed by the intersection of the arc-shaped buffer plate and the inner wall of the side inlet channel, connecting to the second lower forming surface. This structure further buffers the molten metal flowing towards the second lower forming surface area, preventing direct impact on the cavity wall and reducing surface defects caused by impact. This ensures smooth filling of the molten metal in this area, guaranteeing the surface quality and forming precision of the corresponding parts of the shell. The multi-dimensional through-flow gate structure, through the cooperation of the connecting gate, the second gate, and the third gate, enables the molten metal to flow in multiple dimensions within the gate slide block, pouring into the molding cavity from different heights and positions. This design solves the problem of poor pouring effect in traditional gates with the same height, adapts to the structural characteristics of shells with a certain height, and allows the molten metal to fill the cavity evenly in the height direction, improving the overall density of the casting. The buffer groove is set correspondingly to the third gate, and the guide step after buffering is inclined towards the connection between the gate and the side molding surface. The buffer groove buffers the molten metal entering the third gate, and the guide step guides the molten metal to flow into the cavity, solving the problem of eddy currents easily formed near the gate, allowing the molten metal to fill smoothly along the cavity wall, reducing bubbles and cold shut defects, and improving the precision of the casting.

[0049] The fourth inlet channel is inclined and set on the side of the connecting channel close to the first side molding surface, which increases the distribution dimension of the inlet point. This design allows the molten liquid to be poured from the position close to the first side molding surface to supplement the molten liquid supply in the side area of ​​the cavity. This solves the problem of insufficient filling that may be caused by a single inlet direction, ensures that the side part of the shell is fully molded, and improves the impact resistance.

[0050] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0051] Although this paper extensively uses terms such as upper mold 1, lower mold 2, lower mold forming groove 4, lower mold forming insert 5, bottom forming block 6, first step 7, first lower forming surface 8, second lower forming surface 9, upper forming insert 10, gating slider 11, first side forming surface 12, first inner recess 13, second inner recess 14, second side forming surface 15, forming cavity 16, side gating channel 17, three-way branching runner structure 18, multi-dimensional through-type gating channel structure 19, branching runner 20, first gating channel The terms 21, arc-shaped buffer plate, buffered post-injection channel, connecting channel, second injection channel, third injection channel, buffer groove, buffered post-guide step, fourth injection channel, positioning block, positioning groove, circulating cooling channel, and fifth injection channel are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would be contrary to the spirit of this utility model.

Claims

1. A slider feeding mechanism for a die-casting mold of a zinc alloy power tool cover, comprising an upper mold (1) and a lower mold (2), characterized in that, The lower mold (2) is recessed inward in the middle and has a lower forming groove (4). The lower forming groove (4) extends through the sidewalls of the lower mold (2) on both sides and has a truncated cone-shaped lower forming insert (5) with a cross-section that is narrow at the top and wide at the bottom protruding from the middle. One end of the lower forming insert (5) is connected to one sidewall of the lower forming groove (4) and there is a gap between the other end of the lower forming insert (5) and the other sidewall of the lower forming groove (4). The lower part of the side end face of the lower forming insert (5) protrudes into the gap to form a bottom forming block with an arc-shaped outer surface. (6) The lower forming groove (4) has a first step (7) protruding at the gap. The bottom of the bottom forming block (6) is connected to the top surface of the first step (7). The lower forming insert (5) has a lower forming surface composed of a first lower forming surface (8) and a second lower forming surface (9). The upper mold (1) has an upper forming insert (10) with an upper forming surface that matches the second lower forming surface (9) protruding from the middle of the bottom of the upper mold (1). The lower forming groove (4) has two ends that abut against the inner wall of the lower forming groove (4) on its left and right sides. A gating slide block (11) has a first side molding surface (12) formed along its upper middle edge that matches the first lower molding surface (8) located at the upper edge of the side wall of the lower molding insert (5). The gating slide block (11) has a first recess (13) that matches the first step (7) and a second recess (14) that matches the bottom molding block (6) on the side near the gap. A second side molding surface (12) that matches the first lower molding surface (8) located at the bottom molding block (6) is formed on the second recess (14). 5) The upper molding surface, lower molding surface, first side molding surface (12) and second side molding surface (15) are combined to form a molding cavity (16). Two side injection channels (17) are provided between the upper mold (1) and the lower mold (2) and on the side near the connection between the lower molding insert (5) and the lower molding groove (4). A three-way flow channel structure (18) is provided on the top of the lower molding insert (5). A multi-dimensional through injection channel structure (19) connected to the three-way flow channel structure (18) is provided inside the injection slider (11).

2. The slider feeding mechanism for the die-casting mold of the zinc alloy power tool cover according to claim 1, characterized in that, The first lower molding surface (8) extends from the upper edge of the two side walls on one side where the lower molding insert (5) is connected to the inner wall of the lower molding groove (4) to the other side to the top outer edge and outer surface of the bottom molding block (6). The second lower molding surface (9) is recessed inward on the top surface of the lower molding insert (5) and has an arc-shaped cross section. The two sides of the second lower molding surface (9) are connected to the first lower molding surface (8).

3. The slider feeding mechanism for the die-casting mold of the zinc alloy power tool cover according to claim 2, characterized in that, The three-way flow channel structure (18) includes a flow channel (20) disposed on the top surface of the lower molding insert (5). The outer side of the flow channel (20) is connected to the side inlet channel (17). The middle inner side of the flow channel (20) is connected to the second lower molding surface (9) and both ends penetrate the side walls of the lower molding insert (5). Both ends of the flow channel (20) are respectively connected to the multi-dimensional through-type inlet channel structure (19) in the two inlet sliders (11). The middle part of the flow channel (20) is provided with a first inlet channel (21) connected to the second lower molding surface (9). The lower molding insert (5) is provided with an arc-shaped buffer plate (22) protruding between the flow channel (20) and the second lower molding surface (9). The first inlet channel (21) extends obliquely to the top surface of the arc-shaped buffer plate (22) at the end away from the flow channel (20).

4. The slider feeding mechanism for the die-casting mold of the zinc alloy power tool cover according to claim 3, characterized in that, The arc-shaped buffer plate (22) is inclinedly provided with a buffer post-casting channel (23) connected to the second lower forming surface (9).

5. The slider feeding mechanism for the die-casting mold of the zinc alloy power tool cover according to claim 3, characterized in that, The multi-dimensional through-type gating channel structure (19) includes a connecting channel (24) provided on the side of the gating slider (11) near the branch channel (20). The inner end of the connecting channel (24) is also provided with a fifth gating channel (100) extending along the lower part of the first lower molding surface (8) to the side away from the connection between the lower molding insert (5) and the lower molding groove (4). The connecting channel (24) can be connected to the end of the branch channel (20). A second gating channel (25) is provided through the gating slider (11). The gating port of the second gating channel (25) is located in the connecting channel (24). At least one third gating channel (26) connected to the second side molding surface (15) is provided at the bottom of the first concave part (13). The gating port of the second gating channel (25) is located in the third gating channel (26).

6. The slider feeding mechanism for the die-casting mold of the zinc alloy power tool cover according to claim 5, characterized in that, The first step (7) is also recessed inward and has a buffer groove (27) corresponding to the third inlet channel (26). The third inlet channel (26) can be connected to the buffer groove (27). The buffer groove (27) is inclined on the side near the first lower molding surface (8) and has a buffer guide step (28) facing the connection between the third inlet channel (26) and the second side molding surface (15).

7. The slider feeding mechanism for the die-casting mold of the zinc alloy power tool cover according to claim 5, characterized in that, The connecting channel (24) is also provided with an inclined fourth inlet channel (29) on the side near the first side molding surface (12).

8. The slider feeding mechanism for the die-casting mold of the zinc alloy power tool cover according to claim 1, characterized in that, A positioning structure is also provided between the lower molding insert (5) and the injection slide block (11).

9. The slider feeding mechanism for the die-casting mold of the zinc alloy power tool cover according to claim 8, characterized in that, The positioning structure includes a positioning block (30) that is inclinedly disposed at one end of the lower molding insert (5) near the gap. The bottom of the positioning block (30) extends to the upper surface of the bottom molding block (6). The second concave part (14) of the injection slide block (11) is provided with a positioning groove (31) that is adapted to the positioning block (30) by being recessed inward on the upper side.

10. The slider feeding mechanism for the die-casting mold of the zinc alloy power tool cover according to claim 1, characterized in that, The upper mold (1), lower mold and sprue slide (11) are each provided with an independent circulating cooling channel (32).

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