Sliding block feeding mechanism of zinc alloy electric tool outer cover die-casting die

Abstract

The invention provides a sliding block feeding mechanism of a zinc alloy electric tool outer cover die-casting die, and belongs to the technical field of dies. The die comprises an upper die and a lower die, and the middle of the lower die is concavely provided with a lower forming groove. The upper forming face, the lower forming face, the first side forming face and the second side forming face are combined to form a forming cavity matched with a shell structure, and the problem that middle pouring cannot be achieved due to sliding block shielding is solved; molten liquid can penetrate through a sliding block on the side part of a product to enter a forming cavity, so that pouring from the middle of the length or the width of the shell is realized; and by means of the multi-dimensional penetrating type pouring runner structure, pouring can be conducted from the front height and the rear height of the forming cavity under the condition that the number of injection molding pipes is not increased, the pouring effect can be further improved, and the shell forming quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of molds and relates to a sliding block feeding mechanism of a zinc alloy electric tool cover die-casting mold. BACKGROUND

[0002] When the zinc alloy shell of an electric tool is formed by pressure casting, multiple technical problems are faced: firstly, because the product length or width is large, pouring from only four corners will cause uneven energy attenuation of the molten metal during flow, and the area far from the gate is prone to insufficient filling and insufficient density, directly affecting the structural strength of the shell; secondly, the shell usually has a sliding block on the outside, and the shielding of the sliding block makes it difficult for the traditional mold to set a gate in the middle area of the length or width, and it is difficult to realize balanced filling of the molten metal from the middle to both sides, further aggravating the forming defects; thirdly, the shell often has a certain height, and if pouring is only from a single height, the distribution of the molten metal in the height direction will have obvious differences, and the solidification speed of the upper and lower parts is out of sync, which is prone to internal stress and deformation.

[0003] A wet-type gearbox shell alloy die-casting mold (application number: 202220937745.0) is disclosed in Chinese Patent, which comprises a lower mold, the upper end of the lower mold is provided with an upper mold, the upper end of the upper mold is provided with a locking piece, the upper end of the locking piece is provided with a limiting block, the lower end of the limiting block is connected with a locking rod, the connecting places of the locking rod with the lower mold and the upper mold are both provided with clamping grooves, the lower end of the locking rod is installed with a connecting piece, and the connecting place of the connecting piece with the lower mold is provided with a mounting hole. SUMMARY

[0004] The purpose of the application is to solve the above problems, and provide a zinc alloy electric tool cover die-casting mold sliding block feeding mechanism.

[0005] To achieve the above purpose, the following technical scheme is adopted in the application:

[0006] A zinc alloy electric tool cover die-casting mold slider feeding mechanism, comprising an upper mold and a lower mold, the lower mold is provided with a lower forming groove in the middle part, the lower forming groove is provided with a lower forming insert with a taper shape with a narrow upper part and a wide lower part in the cross section, the lower forming insert is connected with one side wall of the lower forming groove at one end and has a gap between the other end and the other side wall of the lower forming groove, the lower forming insert is provided with a bottom forming block with an arc surface on the lower part of the side end face, the lower forming groove is provided with a first step at the gap, the bottom of the bottom forming block is connected with the top surface of the first step, the lower forming insert is provided with a lower forming surface composed of a first lower forming surface and a second lower forming surface, the upper mold is provided with an upper forming insert with an upper forming surface matched with the second lower forming surface at the middle part of the bottom, the lower forming groove is provided with two feeding sliders with two ends matched with the inner wall of the lower forming groove, the middle part of the feeding slider is provided with a first side forming surface matched with the first lower forming surface on the upper side of the lower forming insert, the side of the feeding slider close to the gap is provided with a first recess matched with the first step and a second recess matched with the bottom forming block, the second recess is provided with a second side forming surface matched with the first lower forming surface on the bottom forming block, the upper forming surface, the lower forming surface, the first side forming surface and the second side forming surface form a forming cavity, the upper mold and the lower mold are provided with two side feeding runners at the side close to the connection between the lower forming insert and the lower forming groove, the top of the lower forming insert is provided with a three-way distribution runner structure, the feeding slider is provided with a multi-dimensional through feeding runner structure connected with the three-way distribution runner structure.

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

[0008] In the zinc alloy electric tool cover die-casting mold slider feeding mechanism, the three-way distribution runner structure comprises a distribution runner provided on the top surface of the lower forming insert, the inner middle part of the distribution runner is connected with the second lower forming surface and the two ends penetrate the two side walls of the lower forming insert, the two ends of the distribution runner are respectively connected with the multi-dimensional through feeding runner structures in the two feeding sliders, the middle part of the distribution runner is provided with a first feeding runner connected with the second lower forming surface, the lower forming insert is provided with an arc-shaped buffer plate between the distribution runner and the second lower forming surface, and the end of the first feeding runner away from the distribution runner extends to the top surface of the arc-shaped buffer plate.

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

[0010] In the zinc alloy electric tool cover die-casting mold slider feeding mechanism, the multi-dimensional through feeding runner structure comprises a connecting runner arranged on the feeding slider close to the branch runner, and the inner end of the connecting runner is further provided with a fifth feeding runner extending along the lower part of the first lower forming surface to the side away from the connecting position of the lower forming insert and the lower forming groove, the connecting runner is connected with the end of the branch runner, the second feeding runner is arranged in the feeding slider, the feeding port of the second feeding runner is located in the connecting runner, the bottom of the first inner recess is provided with at least one third feeding runner connected with the second side forming surface, and the outlet of the second feeding runner is located in the third feeding runner.

[0011] In the zinc alloy electric tool cover die-casting mold slider feeding mechanism, the first step is further provided with a buffer groove corresponding to the third feeding runner, the third feeding runner is connected with the buffer groove, and the buffer groove is provided with a buffer rear guide step inclined to the connecting position of the third feeding runner and the second side forming surface close to the first lower forming surface.

[0012] In the zinc alloy electric tool cover die-casting mold slider feeding mechanism, the connecting runner is further provided with an inclined fourth feeding runner close to the first side forming surface.

[0013] In the zinc alloy electric tool cover die-casting mold slider feeding mechanism, the lower forming insert and the feeding slider are further provided with a positioning structure.

[0014] In the zinc alloy electric tool cover die-casting mold slider feeding mechanism, the positioning structure comprises a positioning block arranged on the lower forming insert close to the gap, the bottom of the positioning block extends to the upper surface of the bottom forming block, and the second inner recess of the feeding slider is provided with a positioning groove matched with the positioning block.

[0015] In the zinc alloy electric tool cover die-casting mold slider feeding mechanism, the upper die, the lower die and the feeding slider are further independently provided with a circulating cooling runner.

[0016] Compared with the prior art, the zinc alloy electric tool cover die-casting mold slider feeding mechanism has the following advantages:

[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 the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the external structure of the present invention;

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

[0024] Figure 3 is a sectional view of another aspect of the present application;

[0025] Figure 4 is a schematic view of the overall structure of the lower mold plate and the feeding slide;

[0026] Figure 5 is a schematic view of the structure of the lower mold plate;

[0027] Figure 6 is a schematic view of the structure of the upper mold plate and the feeding slide;

[0028] Figure 7 is a schematic view of the partial structure of the lower mold plate and the feeding slide;

[0029] Figure 8 is a partial exploded view of the lower mold plate and the feeding slide;

[0030] Figure 9 is a schematic view of the structure of the feeding slide;

[0031] Figure 10 is a schematic view of Figure 1 is an enlarged view of A in FIG. 7;

[0032] Figure 11 is a schematic view of Figure 7 is an enlarged view of B in FIG. 7;

[0033] Figure 12 is an exploded view of the present application;

[0034] Figure 13 is a schematic view of another aspect of the present application; Figure 12

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

[0036] As Figures 1-13 ​As shown, a zinc alloy electric tool cover die slide block feeding mechanism, including an upper die 1 and a lower die 2, the lower die 2 is inwardly recessed in the middle and provided with a lower forming groove 4, the lower forming groove 4 is provided with a lower forming insert 5 with a tapered shape with a narrow upper part and a wide lower part on the left and right sides of the lower die 2 and the middle of the lower forming groove 4, one end of the lower forming insert 5 is connected with one side wall of the lower forming groove 4 and the other end of the lower forming insert 5 and the other side wall of the lower forming groove 4 has a gap, the lower end of the side end face of the lower forming insert 5 is protruded into the gap and forms a bottom forming block 6 with an arc-shaped outer surface, the lower forming groove 4 is protruded at the gap and forms a first step 7, the bottom of the bottom forming block 6 is connected with the top surface of the first step 7, the lower forming insert 5 is formed with a lower forming surface composed of a first lower forming surface 8 and a second lower forming surface 9, the middle of the bottom of the upper die 1 is protruded and provided with an upper forming insert 10 with an upper forming surface matched with the second lower forming surface 9, the left and right sides of the lower forming groove 4 are provided with two feeding slides 11 with two ends abutting against the inner wall of the lower forming groove 4, the middle of the feeding slide 11 is formed with a first side forming surface 12 matched with the first lower forming surface 8 on the upper side of the side wall of the lower forming insert 5, the side of the feeding slide 11 close to the gap has a first recessed part 13 matched with the first step 7 and a second recessed part 14 matched with the bottom forming block 6, the second recessed part 14 is formed with a second side forming surface 15 matched with the first lower forming surface 8 at the bottom forming block 6, the upper forming surface, the lower forming surface, the first side forming surface 12 and the second side forming surface 15 combine to form a forming cavity 16, two side feeding runners 17 are arranged between the upper die 1 and the lower die 2 and on the side close to the connection between the lower forming insert 5 and the lower forming groove 4, the top of the lower forming insert 5 is provided with a three-way diverging runner structure 18, the feeding slide 11 is provided with a multi-dimensional through feeding runner structure 19 connected with the three-way diverging runner structure 18.

[0037] In the present application, the upper forming surface, the lower forming surface, the first side forming surface and the second side forming surface combine to form a forming cavity matched with the shell structure, solving the problem of slide block blocking and unable to feed from the middle, through the cooperation of the multi-dimensional through feeding runner structure in the feeding slide with the side feeding runner and the three-way diverging runner structure, the molten metal can penetrate the slide block on the side of the product and enter the forming cavity, realizing feeding from the middle of the length or width of the shell; through the multi-dimensional through feeding runner structure, feeding can be realized from different heights in front and back of the forming cavity without increasing the sprue bush, which can further improve the feeding effect and ensure the forming quality of the shell.

[0038] Specifically, the first lower forming surface 8 extends from the two side walls on one side of the connection between the lower forming insert 5 and the inner wall of the lower forming groove 4 to the top outer edge and outer surface of the bottom forming block 6, and the second lower forming surface 9 is recessed and formed in an arc shape on the top surface of the lower forming insert 5 and connected to the first lower forming surface 8 on both sides. The first lower forming surface 8 extends from the two side walls on one side of the connection between the lower forming insert 5 and the inner wall of the lower forming groove 4 to the top outer edge and outer surface of the bottom forming block 6, and the second lower forming surface is recessed and formed in an arc shape and connected to the first lower forming surface, which optimizes the overall structure of the lower forming surface. This design makes the lower forming surface more accurately match the upper forming surface, the first and second side forming surfaces, and adapts to the complex shape of the shell, ensuring that the dimensions of the forming cavity match everywhere, improving the forming precision of the casting, and laying a foundation for subsequent uniform pouring.

[0039] Specifically, the three-way diverging runner structure 18 includes a diverging runner 20 arranged on the top surface of the lower forming insert 5, the inner side of the middle part of the diverging runner 20 is connected to the second lower forming surface 9, and both ends of the diverging runner 20 penetrate through the two side walls of the lower forming insert 5, both ends of the diverging runner 20 are connected to the multi-dimensional penetrating pouring runner structure 19 in the two pouring sliders 11 respectively, the middle part of the diverging runner 20 is provided with a first pouring runner 21 connected to the second lower forming surface 9, and the lower forming insert 5 is provided with an arc-shaped buffer plate 22 located between the diverging runner 20 and the second lower forming surface 9. The first pouring runner 21 extends obliquely to the top surface of the arc-shaped buffer plate 22 away from one end of the diverging runner 20. The three-way diverging runner structure adopts an arc-shaped diverging runner matched with the first pouring runner to realize multi-directional diverging of the molten metal. The arc-shaped buffer plate is arranged between the diverging runner and the second lower forming surface to buffer the molten metal. This design solves the problems of large impact and uneven distribution of traditional pouring molten metal, makes the molten metal smoothly diverge to the two pouring sliders, and at the same time pours into the second lower forming surface area, improves the uniformity of molten metal filling, and reduces internal defects of the casting.

[0040] Preferably, the arc-shaped buffer plate 22 is obliquely provided with a buffer rear pouring channel 23 connected to the second lower forming surface 9. The buffer rear pouring channel is connected to the second lower forming surface, which further buffers the molten metal flowing to the second lower forming surface area, avoids direct impact of the molten metal on the cavity wall, reduces surface defects caused by impact, makes the molten metal smoothly fill in this area, and ensures the surface quality and forming precision of the corresponding part of the shell.

[0041] Specifically, the multi-dimensional through-type gating structure 19 comprises a connecting runner 24 arranged on the gating slide 11 near the side of the distribution runner 20, the inner end of the connecting runner 24 is further provided with a fifth gating runner 100 extending along the lower part of the first lower forming surface 8 to the side away from the connecting position of the lower forming insert 5 and the lower forming groove 4, the connecting runner 24 is connected with the end of the distribution runner 20, the second gating runner 25 is arranged through the gating slide 11, the gating port of the second gating runner 25 is located in the connecting runner 24, the bottom of the first inner recess 13 is provided with at least one third gating runner 26 connected with the second side forming surface 15, and the gating port of the second gating runner 25 is located in the third gating runner 26. The multi-dimensional through-type gating structure realizes the multi-dimensional flow of the molten metal in the gating slide through the cooperation of the connecting runner, the second gating runner and the third gating runner, and realizes the gating from different heights and positions to the forming cavity. The design solves the problem of poor effect of traditional gating at the same height, adapts to the structural characteristics of the shell with a certain height, makes the molten metal uniformly filled in the height direction of the cavity, and improves the overall density of the casting.

[0042] Preferably, the first step 7 is further inwardly recessed and provided with a buffer groove 27 corresponding to the third gating runner 26, the third gating runner 26 is connected with the buffer groove 27, and the buffer groove 27 is inclined and provided with a buffer rear guide step 28 toward the connecting position of the third gating runner 26 and the second side forming surface 15 near the side of the first lower forming surface 8. The buffer groove is correspondingly arranged with the third gating runner, the buffer rear guide step is inclined and arranged toward the connecting position of the gating port and the side forming surface, the buffer groove buffers the molten metal entering the third gating runner, the guide step guides the molten metal to flow to the cavity, solves the problem that the molten metal is easy to form vortex near the gating port, makes the molten metal smoothly filled along the cavity wall, reduces the defects of bubbles and cold shut, and improves the precision of the casting.

[0043] Preferably, the connecting runner 24 is further provided with an inclined fourth gating runner 29 near the side of the first side forming surface 12. The fourth gating runner is inclined and arranged on the side of the connecting runner near the first side forming surface, which increases the distribution dimension of the gating points. The design makes the molten metal able to be supplemented from the position near the first side forming surface, supplements the molten metal supply in the side area of the cavity, solves the problem of insufficient filling caused by single gating direction, ensures the full formation of the side part of the shell, and improves the anti-impact ability.

[0044] Preferably, a positioning structure is further arranged between the lower forming insert 5 and the gating slide 11. The positioning structure between the lower forming insert and the gating slide ensures the relative position accuracy of the two when the mold is closed. The design solves the problem of size deviation of the forming cavity caused by the relative displacement of the parts, ensures the consistency and stability of the forming cavity, provides a precise space basis for the uniform filling of the molten metal, and improves the size precision and surface quality of the casting.

[0045] Specifically, the positioning structure comprises a positioning block 30 obliquely arranged at the end of the lower forming insert 5 close to the gap, the bottom of the positioning block 30 extends to the upper surface of the bottom forming insert 6, and the upper side of the second inner recess 14 of the pouring slider 11 is inwardly recessed and provided with a positioning groove 31 matched with the positioning block 30. The positioning block is obliquely arranged at the end of the lower forming insert, the positioning groove is matched with the positioning block and arranged on the pouring slider, and precise matching positioning is formed. The structure enhances the positioning stability of the lower forming insert and the pouring slider, avoids relative deviation during mold opening and closing, ensures the size precision of the key part of the forming cavity, reduces the flash or material shortage of the castings caused by inaccurate positioning, and improves the product qualification rate.

[0046] Preferably, the upper mold 1, the lower mold and the pouring slider 11 are also independently provided with a circulating cooling channel 32. The independent circulating cooling channels in the upper mold, the lower mold and the pouring slider can quickly take away the heat during the pressure casting process. The design corresponds to the cooling problem not mentioned in the background technology, realizes rapid and uniform cooling and solidification of the zinc alloy melt, solves the deformation problem of the castings caused by uneven cooling, improves the size stability and structural strength of the castings, enhances the impact resistance of the shell, and shortens the production cycle.

[0047] The working principle of the present application is that the upper forming surface, the lower forming surface, the first side forming surface and the second side forming surface combine to form a forming cavity matched with the shell structure, solve the problem of intermediate pouring blocked by the slider, and through the cooperation of the multi-dimensional through pouring channel structure in the pouring slider with the side pouring channel and the three-way shunt channel structure, the melt can penetrate the slider on the side of the product and enter the forming cavity, realizing intermediate pouring from the length or width of the shell; through the multi-dimensional through pouring channel structure, pouring can also be realized from different heights in front and back of the forming cavity without increasing the injection pipe, which can further improve the pouring effect and ensure the forming quality of the shell.

[0048] The three-way diverging runner structure adopts an arc-shaped diverging runner matched with a first pouring runner to realize multi-directional distribution of the molten metal; the arc-shaped buffer plate is arranged between the diverging runner and the second lower forming surface to form a buffer for the molten metal, which solves the problems of large impact and uneven distribution of the traditional pouring molten metal, makes the molten metal smoothly distribute to the two side pouring sliders, and at the same time, pours into the second lower forming surface area, improves the uniformity of molten metal filling, reduces internal defects of the casting, the buffer after the pouring channel is formed by the intersection of the arc-shaped buffer plate and the inner wall of the side pouring runner, and is connected to the second lower forming surface, which further buffers the molten metal flowing to the second lower forming surface area, avoids the direct impact of the molten metal on the cavity wall, reduces surface defects caused by impact, makes the molten metal smoothly fill in the area, ensures the surface quality and forming precision of the corresponding part of the shell, and the multi-dimensional through pouring runner structure realizes multi-dimensional flow of the molten metal in the pouring slider through the cooperation of the connecting runner, the second pouring runner and the third pouring runner, pours into the forming cavity from different heights and positions, which solves the problem of poor traditional pouring effect at the same height, adapts to the structural characteristics of the shell with a certain height, makes the molten metal uniformly fill in the height direction of the cavity, improves the overall density of the casting, the buffer groove is correspondingly arranged with the third pouring runner, the buffer after the guide step is inclined towards the connection between the pouring port and the side forming surface, the buffer groove buffers the molten metal entering the third pouring runner, the guide step guides the molten metal to flow to the cavity, solves the problem that the molten metal is easy to form vortex near the pouring port, makes the molten metal smoothly fill along the cavity wall, reduces bubble and cold shut defects, and improves the precision of the casting;

[0049] The fourth pouring runner is inclined and arranged on the side of the connecting runner close to the first side forming surface, which increases the distribution dimension of the pouring point, the design makes the molten metal assist pouring from the position close to the first side forming surface, supplements the molten metal supply in the side area of the cavity, solves the problem of insufficient filling caused by single pouring direction, ensures the full formation of the side part of the shell, and improves the impact resistance.

[0050] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, without departing from the spirit of the present application or exceeding the scope defined by the appended claims.

[0051] Although the upper die 1, the lower die 2, the lower die forming groove 4, the lower die forming insert 5, the bottom forming block 6, the first step 7, the first lower forming surface 8, the second lower forming surface 9, the upper forming insert 10, the gating slide 11, the first side forming surface 12, the first inner recess 13, the second inner recess 14, the second side forming surface 15, the forming cavity 16, the side gating runner 17, the three-way diverging runner structure 18, the multi-dimensional through-type gating runner structure 19, the diverging runner 20, the first gating runner 21, the arc-shaped buffer plate 22, the buffer post-gating channel 23, the connecting runner 24, the second gating runner 25, the third gating runner 26, the buffer groove 27, the buffer post-gating guiding step 28, the fourth gating runner 29, the positioning block 30, the positioning groove 31, the circulating cooling runner 32, the fifth gating runner 100 and the like are used more frequently in the description, they are only used for the convenience of describing and explaining the essence of the present application; any additional limitation is contrary to the spirit of the present application.

Claims

1. A slide feed mechanism for a zinc alloy power tool housing die-casting mould comprising an upper die (1) and a lower die (2), characterised in that, The lower mold (2) is provided with a lower forming groove (4) in the middle part, the left and right sides of the lower forming groove (4) penetrate the side wall of the lower mold (2), and the middle part of the lower forming groove (4) is provided with a lower forming insert (5) in the shape of a truncated cone with a narrow upper part and a wide lower part, one end of the lower forming insert (5) is connected with the side wall of one side of the lower forming groove (4), and the other end of the lower forming insert (5) and the side wall of the other side of the lower forming groove (4) have a gap, the lower part of the side end face of the lower forming insert (5) protrudes into the gap to form a bottom forming block (6) with an arc-shaped outer surface, the lower forming groove (4) is provided with a first step (7) at the gap, the bottom of the bottom forming block (6) is connected with the top surface of the first step (7), the lower forming insert (5) is formed with a lower forming surface composed of a first lower forming surface (8) and a second lower forming surface (9), the middle part of the bottom of the upper mold (1) is provided with an upper forming insert (10) with an upper forming surface matched with the second lower forming surface (9), the left and right sides of the lower forming groove (4) are provided with two pouring slide blocks (11) with two ends abutting against the inner wall of the lower forming groove (4), the middle part of the pouring slide block (11) is formed with a first side forming surface (12) matched with the first lower forming surface (8) on the upper side of the side wall of the lower forming insert (5), the side close to the gap of the pouring slide block (11) has a first recess (13) matched with the first step (7) and a second recess (14) matched with the bottom forming block (6), the second recess (14) is formed with a second side forming surface (15) matched with the first lower forming surface (8) at the bottom forming block (6), the upper forming surface, the lower forming surface, the first side forming surface (12) and the second side forming surface (15) combine to form a forming cavity (16), two side pouring runners (17) are arranged between the upper mold (1) and the lower mold (2) and on the side close to the connection between the lower forming insert (5) and the lower forming groove (4), the top of the lower forming insert (5) is provided with a three-way diverging runner structure (18), and the pouring slide block (11) is provided with a multi-dimensional through-type pouring runner structure (19) connected with the three-way diverging runner structure (18).

2. The zinc alloy power tool housing die slide feed mechanism of claim 1 wherein, The first lower forming surface (8) extends from the upper side of the two side walls on one side of the connection between the lower forming insert (5) and 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 on the top surface of the lower forming insert (5) and has an arc-shaped cross section, and the two sides of the second lower forming surface (9) are connected with the first lower forming surface (8).

3. The zinc alloy power tool housing die slide feed mechanism of claim 2, wherein, The three-way distribution runner structure (18) includes a distribution runner (20) arranged on the top surface of the lower forming insert (5), the outer side of the distribution runner (20) is connected with the side pouring runner (17), the inner side of the distribution runner (20) is connected with the second lower forming surface (9) in the middle part and penetrates through the two side walls of the lower forming insert (5) at both ends, the two ends of the distribution runner (20) are respectively connected with the multi-dimensional penetrating pouring runner structure (19) in the two pouring sliders (11), the middle part of the distribution runner (20) is provided with the first pouring runner (21) connected with the second lower forming surface (9), the lower forming insert (5) is provided with the arc-shaped buffer plate (22) located between the distribution runner (20) and the second lower forming surface (9), and the first pouring runner (21) extends to the top surface of the arc-shaped buffer plate (22) away from the distribution runner (20).

4. The zinc alloy power tool housing die slide feed mechanism of claim 3, wherein, The arc-shaped buffer plate (22) is provided with the buffer rear pouring channel (23) connected with the second lower forming surface (9) and inclined.

5. The zinc alloy power tool housing die slide feed mechanism of claim 3 wherein, The multi-dimensional penetrating pouring runner structure (19) includes a connecting runner (24) arranged on the side of the pouring slider (11) close to the distribution runner (20), the inner end of the connecting runner (24) is further provided with the fifth pouring runner (100) extending along the lower part of the first lower forming surface (8) to the side away from the connection between the lower forming insert (5) and the lower forming groove (4), the connecting runner (24) can be connected with the end of the distribution runner (20), the second pouring runner (25) is arranged in the pouring slider (11) and penetrates through, the pouring port of the second pouring runner (25) is located in the connecting runner (24), the bottom of the first inner recess (13) is provided with at least one third pouring runner (26) connected with the second side forming surface (15), and the pouring port of the second pouring runner (25) is located in the third pouring runner (26).

6. The zinc alloy power tool housing die slide feed mechanism of claim 5, wherein, The first step (7) is further provided with the buffer groove (27) corresponding to the third pouring runner (26) and recessed inward, the third pouring runner (26) can be connected with the buffer groove (27), and the buffer groove (27) is provided with the buffer rear guide step (28) inclined to the connecting place of the third pouring runner (26) and the second side forming surface (15) on the side close to the first lower forming surface (8).

7. The zinc alloy power tool housing die slide feed mechanism of claim 5 wherein, The connecting runner (24) is further provided with the fourth pouring runner (29) arranged inclined on the side close to the first side forming surface (12).

8. The zinc alloy power tool housing die cast mold slide feed mechanism of claim 1 wherein, The lower forming insert (5) and the pouring slider (11) are further provided with a positioning structure.

9. The zinc alloy power tool housing die slide feed mechanism of claim 8, wherein, The positioning structure includes a positioning block (30) arranged inclined on the end of the lower forming insert (5) close to the gap, the bottom of the positioning block (30) extends to the upper surface of the bottom forming block (6), and the second inner recess (14) of the pouring slider (11) is provided with a positioning groove (31) recessed inward on the upper side and matched with the positioning block (30).

10. The zinc alloy power tool housing die slide feed mechanism of claim 1 wherein, The upper die (1), the lower die and the pouring slider (11) are further respectively independently provided with a circulating cooling runner (32).

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