Two-slide-out structure based on magnesium alloy die slider

Abstract

The invention discloses a double sliding-out structure based on a magnesium alloy mold slider, comprising a slider mechanism consisting of a large slider assembly and a small slider assembly; the large slider assembly consists of a large slider seat and a large slider, and the small slider assembly consists of a small slider seat and a small slider; the small slider assembly is arranged in a slider cavity of the large slider seat; a slider pin is installed on the small slider assembly, and the slider pin comprises a large slider pin and a small slider pin; the large slider pin is processed with a main core, and the small slider pin is processed with a secondary core; an inclined guide hole is formed on the small slider seat for inserting and matching with an inclined guide column, and the inclined guide column pushes the small slider assembly to move forward when the mold is closed, so as to realize locking and fixing of the slider mechanism in the mold; the inclined guide column pushes the small slider assembly to drive the slider pin to move backward when the mold is opened, and the large slider seat is connected with a core-pulling oil cylinder, and the core-pulling oil cylinder pulls the large slider assembly to drive the small slider assembly to slide backward after the small slider assembly is loosened, so as to realize the overall sliding out of the slider mechanism.

Description

Technical Field

[0001] The invention relates to a design technology of a mould, in particular to a slider structure used in a mould, specifically a double sliding-out structure based on a magnesium alloy mould slider. Background Art

[0002] The mold is usually composed of an upper mold and a lower mold that match each other, and a slider mechanism. The upper mold and the lower mold match to form a cavity for molding the shape of the product. The upper mold is generally a movable mold, and the lower mold is generally a fixed mold. The slider mechanism is slidably arranged on the fixed mold, and is used to slide the core of the inner cavity of the molded product after the mold is opened. In the prior art, for products with a large core clamping force, the product is easily deformed or torn by the slider when the mold is opened, which leads to a decrease in the product qualification rate and high production costs. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a double sliding structure based on a magnesium alloy mold slider, which is simple in structure, safe and reliable, and can prevent the product from being deformed or cracked during core pulling.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] The double sliding structure based on the slider of the magnesium alloy mold includes a slider mechanism composed of a large slider assembly and a small slider assembly; the large slider assembly consists of a large slider seat slidably arranged on the lower mold and a large slider fixed on the front end surface of the large slider seat, and the small slider assembly consists of a small slider seat and a small slider fixed on the front end surface of the small slider seat; the small slider assembly is arranged in a slider cavity formed by the large slider seat, and a sliding gap is left in the slider cavity to allow the small slider assembly to move a certain distance; at least one set of slider pins sliding through the large slider is installed on the small slider assembly, and each set of slider pins includes a large slider pin and two small slider pins symmetrically arranged up and down with the large slider pin as the central axis; the large slider pin A main core for forming the inner cavity of the product is processed at the front end, and a sub-core for forming the ear hole of the product is processed at the front end of the small pin of the slider; an inclined guide hole for inserting and cooperating with an inclined guide column fixed on the upper mold is formed on the small slider seat, and the inclined guide column is inserted into the inclined guide hole when the mold is closed to push the small slider assembly to move forward and close to the large slider, so as to lock and fix the position of the slider mechanism in the mold; when the inclined guide column is pulled out of the inclined guide hole when the mold is opened, it pushes the small slider assembly and drives the slider pin to move backward, so as to realize the one-time sliding out and loosening of the small slider assembly, and the large slider seat is connected to a core-pulling cylinder, which pulls the large slider assembly and drives the small slider assembly to slide backward after the small slider assembly is loosened, so as to realize the overall sliding out of the slider mechanism.

[0006] To optimize the above technical solutions, the specific measures taken also include:

[0007] The above-mentioned lower mold is provided with fixed guide plates on both sides of the large slider seat to provide guidance for the smooth movement of the large slider seat, and the bottom of the fixed guide plate extends inward to form a support slide rail for cooperating with the bottom sliding support of the large slider seat, and the inner side surface of the fixed guide plate is processed with a guide groove; the two side surfaces of the large slider seat are provided with guide convex strips that cooperate with the guide groove of the fixed guide plate for sliding guidance, or the two side surfaces of the large slider seat are processed with positioning grooves, and the positioning grooves are embedded with guide convex strips that cooperate with the guide groove of the fixed guide plate for sliding guidance.

[0008] On the top surface of the above-mentioned large slider seat, there are slider guide plates formed on both sides of the slider cavity for providing guidance for the smooth movement of the small slider assembly. The inner side surface of the slider guide plate is processed with a guide groove, and the two side surfaces of the small slider seat and the two side surfaces of the small slider are processed with guide rails for slidingly cooperating with the guide grooves of the slider guide plate.

[0009] The above-mentioned small slider is fixedly installed on the front end surface of the small slider seat by bolts. The small slider seat is processed with four first light holes for the bolts to pass through, and the small slider is formed with four first threaded holes corresponding to the first light holes for being spirally connected to the bolts; the front end surface of the small slider seat is formed with two first positioning blocks symmetrically formed in the upper and lower parts, and the small slider is correspondingly formed with two first positioning grooves that are positioned and matched with the first positioning blocks of the small slider seat.

[0010] The above-mentioned small slider is formed with a large step hole for the large pin of the slider to pass through and a small step hole for the small pin of the slider to pass through; the rear end of the large pin of the slider is formed with a large annular boss that is positioned and matched with the step surface of the large step hole, and the rear end of the small pin of the slider is formed with a small annular boss that is positioned and matched with the step surface of the small step hole; the large annular boss and the small annular boss are press-fitted and clamped between the small slider seat and the small slider.

[0011] A cooling liquid cavity for quickly reducing the temperature of the main core is axially formed in the large pin of the above-mentioned slider, an internal flow channel for supplying cooling liquid is processed in the small slider seat, and an inlet and outlet liquid connecting holes for connecting the internal flow channel and the cooling liquid cavity are opened at the corresponding large annular boss on the front end surface of the small slider seat, and an annular sealing groove is also processed at the corresponding large annular boss on the front end surface of the small slider seat, and a sealing ring is installed in the annular sealing groove to cooperate with the rear end surface of the large annular boss to prevent leakage of cooling liquid; the rear end of the small slider seat is processed with a connecting port for connecting the cooling liquid inlet and return hose; the large slider seat is formed with a hose through hole that allows the cooling liquid inlet and return hose to pass through.

[0012] The above-mentioned large slider is fixedly installed on the front end surface of the large slider seat by bolts. The large slider seat is processed with four second light holes for the bolts to pass through, and the large slider is formed with second threaded holes for being spirally connected to the bolts at the corresponding second light holes; the front end surface of the large slider seat is formed with two second positioning blocks symmetrically on the left and right, and the large slider is correspondingly formed with two second positioning grooves that are positioned and matched with the second positioning blocks of the large slider seat.

[0013] The above-mentioned large slider is formed with a large sliding hole for the large pin of the slider to slide through and a small sliding hole for the small pin of the slider to slide through; the sliding clearance of the small slider assembly is 12 mm, and the length of the secondary core is less than 12 mm; the small slider assembly is symmetrically installed with two sets of slider pins that can simultaneously mold two products.

[0014] The above-mentioned core-pulling cylinder is fixedly mounted on the support frame plate, and the front end of the cylinder rod of the core-pulling cylinder passes through the support frame plate and is connected to the connecting slot formed on the large slider seat; a switch touch plate that moves synchronously with the cylinder rod is fixedly mounted on the cylinder rod, and a touch switch that contacts the switch touch plate to control the core-pulling distance of the core-pulling cylinder is installed on the front end surface of the support frame plate.

[0015] The core-pulling oil cylinder is provided with a guide rod for providing guidance for the smooth movement of the cylinder rod, and the switch touch plate is provided with a guide rod sliding hole for slidingly cooperating with the guide rod.

[0016] Compared with the prior art, the slider mechanism of the present invention consists of a large slider assembly and a small slider assembly, the small slider assembly is slidably arranged on the large slider assembly, and the slider pin is fixedly installed on the small slider assembly, so that the slider pin can move synchronously with the small slider assembly, and when the mold is opened, the inclined guide column installed on the upper mold can push the small slider assembly to drive the slider pin to slide backward a certain distance through the sliding cooperation with the inclined guide hole of the small slider assembly to first pull the core slightly, so that the structure between the slider pin and the product, and between the large slider assembly and the small slider assembly is loosened, and then the core-pulling cylinder pulls the large slider assembly to drive the small slider assembly and the slider pin to slide backward together to pull the core, so that the slider pin is completely separated from the product.

[0017] The present invention adopts a double-slide-out structure for core pulling, which can effectively prevent the risk of the product being pulled and deformed due to a large tightening force, ensure the molding quality of the product, and improve the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 It is a front view structural diagram of the present invention;

[0020] Figure 3 yes Figure 2 A top view of

[0021] Figure 4 is an exploded view of the present invention;

[0022] Figure 5 It is a cross-sectional structural diagram of the slider mechanism of the present invention;

[0023] Figure 6 It is a three-dimensional structural schematic diagram of the large slider assembly of the present invention;

[0024] Figure 7 It is a three-dimensional structural schematic diagram of the small slider assembly of the present invention;

[0025] Figure 8 It is a three-dimensional structural schematic diagram of the large sliding block seat of the present invention;

[0026] Fig. 9 It is a three-dimensional structural schematic diagram of the large sliding block seat of the present invention from another angle;

[0027] Fig.10 It is a three-dimensional structural schematic diagram of the large slider of the present invention;

[0028] Fig.11 It is a three-dimensional structural schematic diagram of the large slider of the present invention from another angle;

[0029] Fig.12 It is a three-dimensional structural schematic diagram of the small slider seat of the present invention;

[0030] Fig.13 It is a three-dimensional structural schematic diagram of the small slider seat of the present invention from another angle;

[0031] Fig.14 It is a front view structural diagram of the small slider seat of the present invention;

[0032] Fig.15 yes Fig.14 A top view of

[0033] Fig.16 It is a three-dimensional structural schematic diagram of the small slider of the present invention;

[0034] Fig.17 It is a three-dimensional structural schematic diagram of the small slider of the present invention from another angle;

[0035] Fig.18 It is a three-dimensional structural schematic diagram of the fixed guide plate of the present invention. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0037] Figures 1 to 18 It is a structural schematic diagram of the present invention.

[0038] The accompanying drawings are marked as follows: large slider assembly A, small slider assembly B, guide rail B1, inclined guide column D, sealing ring M, sliding gap S, product T, large slider seat 1, slider cavity 1a, hose through hole 1b, second light hole 1c, connecting card slot 1d, guide convex strip 11, slider guide plate 12, guide groove 12a, second positioning block 13, large slider 2, large sliding hole 2a, small sliding hole 2b, second threaded hole 2c, second positioning groove 21, small slider seat 3, first light hole 3a, inclined guide hole 3b, internal flow Channel 3c, inlet and outlet liquid connecting hole 3d, connecting port 3e, first positioning block 31, small slider 4, first threaded hole 4a, large step hole 4b, small step hole 4c, first positioning groove 41, large pin 5 of slider, coolant chamber 5a, main core 51, large annular boss 52, small pin 6 of slider, auxiliary core 61, small annular boss 62, fixed guide plate 7, guide groove 7a, support slide rail 71, support frame plate 8, touch switch 81, core pulling cylinder 9, cylinder rod 91, switch touch plate 92, guide rod 93.

[0039] In the prior art, for products with a large core clamping force, the products are easily deformed or cracked by the slider when the mold is opened, which leads to a decrease in product qualification rate and high production costs. The present invention proposes a double-slide-out structure based on a magnesium alloy mold slider. The structure can effectively avoid the product from being deformed or cracked when the core clamping force is large through the double-slide-out design.

[0040] like Figures 1 to 5 As shown, the double sliding structure of the slider of the present invention includes a slider mechanism composed of a large slider assembly A and a small slider assembly B. Wherein: the large slider assembly A is composed of a large slider seat 1 and a large slider 2 fixed on the front end surface of the large slider seat 1. The small slider assembly B is composed of a small slider seat 3 and a small slider 4 fixed on the front end surface of the small slider seat 3. The small slider assembly B is slidably arranged in a slider cavity 1a formed in the large slider seat 1. A sliding gap S is left in the slider cavity 1a to allow the small slider assembly B to move a certain distance, so that the small slider assembly B can slide a certain distance relative to the large slider assembly A on the large slider assembly A. At least one set of slider pins that slide through the large slider 2 is installed on the small slider assembly B, and each set of slider pins includes a large slider pin 5 and two small slider pins 6 that are symmetrically arranged up and down with the large slider pin 5 as the center axis. The front end of the large slider pin 5 is processed with a main core 51, and the front end of the small slider pin 6 is processed with a secondary core 61. By Figure 4 and Figure 5 As can be seen in the figure, the main core 51 is used to form the inner cavity of the product T, and the auxiliary core 61 is used to form the ear holes of the product T. The appearance of the product T is formed by the mold cavity. When the product is molded, the main core 51 and the auxiliary core 61 are both inserted into the mold cavity. The mold is composed of an upper mold and a lower mold that match each other. The large slider seat 1 of the large slider assembly A is slidably arranged on the lower mold of the mold. Figure 5 As shown, an inclined guide hole 3b is formed from top to bottom in the small slider seat 3, and the inclined guide hole 3b can be inserted and matched with the inclined guide column D fixed on the upper mold. When the upper and lower molds are closed, the inclined guide column D can be inserted into the inclined guide hole 3b and use the thrust generated by the inclined surface to push the small slider assembly B to move forward and close to the large slider 2, so as to achieve the locking and fixing of the slider mechanism in the mold. After the mold is closed, the inclined guide column D can clamp the slider mechanism to prevent the slider mechanism from loosening and ensure the fixation of the slider mechanism. When the upper and lower molds are opened, the inclined guide column D moves upward with the upper mold and is pulled out of the inclined guide hole 3b. At this time, the inclined guide column D can push the small slider assembly B to drive the slider pin to move backward a certain distance to pull the core, so as to achieve the one-time sliding out of the small slider assembly B, and cause the main core 51 and the auxiliary core 61 to be loosened from the product T, and the small slider assembly B to be loosened from the large slider assembly A. Since the large slider assembly A remains stationary when the small slider assembly B slides out once, the large slider assembly A can fix the product T, thereby preventing the product T from being pulled and deformed when the small slider assembly B slides out. The large slider seat 1 of the present invention is connected to the back of the core-pulling cylinder 9. After the small slider assembly B is loosened, the core-pulling cylinder 9 pulls the large slider assembly A to drive the small slider assembly B and the slider pin to slide backward together, so as to realize the overall sliding out of the slider mechanism and complete the core pulling of the product.

[0041] In the embodiment, in order to ensure the stability of the forward and backward movement of the large slider seat 1, the present invention provides a fixed guide plate 7 on the left and right sides of the large slider seat 1, and the fixed guide plate 7 can be fixed to the lower mold by bolts. Figure 1 , Figure 4 and Fig.18 As shown, the bottom of the fixed guide plate 7 extends inwardly to form a support rail 71, which is used to cooperate with the bottom sliding support of the large slider seat 1, and a concave guide groove 7a is also processed on the inner side of the fixed guide plate 7. Figure 6 As shown, the two side surfaces of the large slider seat 1 are provided with guide ridges 11 which are slidably matched with the guide grooves 7a of the fixed guide plate 7. Of course, the two side surfaces of the large slider seat 1 may also be provided with guide ridges 11 as shown in FIG. Fig. 9 As shown, a positioning groove is processed, so that a guide convex strip 11 for slidingly guiding and matching the guide groove 7a for fixing the guide plate 7 is embedded in the positioning groove.

[0042] In the embodiment, Figure 8 and Fig. 9 As shown, in order to ensure the smooth forward and backward movement of the small slider assembly B, the present invention has a slider guide plate 12 formed on both sides of the slider cavity 1a on the top surface of the large slider seat 1 for providing guidance for the small slider assembly B, and the inner side surface of the slider guide plate 12 is processed with a guide groove 12a, and the two side surfaces of the small slider seat 3 and the two side surfaces of the small slider 4 are processed with guide rails B1 for slidingly guiding with the guide groove 12a of the slider guide plate 12.

[0043] In the embodiment, the small slider 4 of the present invention is fixedly mounted on the front end surface of the small slider seat 3 by bolts. Figures 12 to 15 As shown, the small slider seat 3 is processed with four first light holes 3a for bolts to pass through. Fig.16 and Fig.17 As shown, four first threaded holes 4a for connecting with the bolt spirals are formed on the small slider 4 corresponding to the first light holes 3a. The first threaded holes 4a are non-transparent blind holes. Two first positioning blocks 31 are formed symmetrically up and down on the front end surface of the small slider seat 3, and two first positioning grooves 41 are formed on the small slider 4 to cooperate with the first positioning blocks 31 of the small slider seat 3. The first positioning blocks 31 and the first positioning grooves 41 are positioned and matched, which can ensure that the installation position between the small slider seat 3 and the small slider 4 is fixed to prevent misalignment between the two.

[0044] In the embodiment, the small slider 4 is formed with a large step hole 4b for the large slider pin 5 to pass through and a small step hole 4c for the small slider pin 6 to pass through. Figure 5 As shown, the rear end of the large pin 5 of the slider is formed with a large annular boss 52 which is positioned and matched with the step surface of the large step hole 4b, and the rear end of the small pin 6 of the slider is formed with a small annular boss 62 which is positioned and matched with the step surface of the small step hole 4c; the large annular boss 52 and the small annular boss 62 are press-fitted and clamped between the small slider seat 3 and the small slider 4.

[0045] Since the product T needs to be cooled quickly after molding, the present invention also forms a cooling liquid cavity 5a in the axial direction in the large pin 5 of the slider, and a cooling liquid flows in the cooling liquid cavity 5a to quickly reduce the temperature of the main mold core 51. Fig.14 and Fig.15 As shown, the small slider seat 3 is processed with an internal flow channel 3c for supplying coolant, and the front end surface of the small slider seat 3 is opened at the corresponding large annular boss 52 with an inlet and outlet connection hole 3d for connecting the internal flow channel 3c and the coolant chamber 5a, and the front end surface of the small slider seat 3 is also processed with an annular sealing groove at the corresponding large annular boss 52, and the annular sealing groove is installed with a sealing ring M that cooperates with the rear end surface of the large annular boss 52 to prevent the coolant from leaking out; the rear end of the small slider seat 3 is processed with a connection port 3e for connecting the coolant inlet and return hose; the large slider seat 1 is formed with a hose through hole 1b for the coolant inlet and return hose to pass through. The coolant inlet and return hose is preferably a spring hose, which can avoid affecting the sliding of the small slider assembly B.

[0046] In the embodiment Figure 8 and Fig. 9As shown, the large slider 2 of the present invention is fixedly installed on the front end surface of the large slider seat 1 by bolts, and the large slider seat 1 is processed with four second light holes 1c for the bolts to pass through, and the large slider 2 is formed with second threaded holes 2c for being spirally connected to the bolts at the corresponding second light holes 1c; the front end surface of the large slider seat 1 is formed with two second positioning blocks 13 symmetrically on the left and right, and the large slider 2 is correspondingly formed with two second positioning grooves 21 that are positioned and matched with the second positioning blocks 13 of the large slider seat 1.

[0047] In the embodiment, the large slider 2 is formed with a large sliding hole 2a for the large slider pin 5 to slide through and a small sliding hole 2b for the small slider pin 6 to slide through. The sliding clearance of the small slider assembly B is 12 mm, that is, the small slider assembly B can move a certain distance of 12 mm. The length of the secondary core 61 is less than 12 mm, that is, the thickness of the ear hole of the product T is less than 12 mm, so that when the small slider assembly B slides backward 12 mm, the secondary core 61 can be just pulled out of the ear hole of the product T.

[0048] In order to improve production efficiency, two sets of slider pins are symmetrically installed on the small slider assembly B of the present invention, so that the mold can form two products T at the same time.

[0049] In the embodiment, Figures 1 to 4 As shown, the core-pulling cylinder 9 is fixedly mounted on the support frame plate 8, and the support frame plate 8 can be fixed to the lower mold by bolts. The front end of the cylinder rod 91 of the core-pulling cylinder 9 passes through the support frame plate 8 and is connected to the connecting card slot 1d formed on the large slider seat 1. A switch touch plate 92 that moves synchronously with the cylinder rod 91 is fixedly mounted on the cylinder rod 91, and a touch switch 81 that touches the switch touch plate 92 to control the core-pulling distance of the core-pulling cylinder 9 is installed on the front end surface of the support frame plate 8. The core-pulling distance of the core-pulling cylinder 9 of the present invention is 150 mm.

[0050] In the embodiment, a guide rod 93 for providing guidance for the smooth movement of the cylinder rod 91 is installed on the core-pulling cylinder 9, and a guide rod sliding hole for slidingly cooperating with the guide rod 93 is processed on the switch touch plate 92.

[0051] The present invention adopts a double-slide-out structure for core pulling, which can effectively prevent the risk of the product being pulled and deformed due to a large tightening force, ensure the product molding quality, and improve the product qualification rate.

[0052] The best embodiment of the present invention has been described, and various changes or modifications made by those skilled in the art will not depart from the scope of the present invention.

Claims

1. A two-slide-out structure based on a magnesium alloy mold slider includes a slider mechanism consisting of a large slider assembly (A) and a small slider assembly (B); the characteristics are: The material of the large slider assembly (A) and the small module assembly (B) is magnesium alloy; The large slider assembly (A) is composed of a large slider seat (1) slidably arranged on the lower mold and a large slider (2) fixed on the front end surface of the large slider seat (1); the small slider assembly (B) is composed of a small slider seat (3) and a small slider (4) fixed on the front end surface of the small slider seat (3); the small slider assembly (B) is arranged in a slider cavity (1a) formed by the large slider seat (1), and a sliding gap (S) is left in the slider cavity (1a) to allow the small slider assembly (B) to move a certain distance; at least one set of slider pins that slide through the large slider (2) is installed on the small slider assembly (B), and each set of the slider pins includes a large slider pin (5) and two small slider pins (6) symmetrically arranged up and down with the large slider pin (5) as the central axis; the front end of the large slider pin (5) is processed with a main inner cavity for forming the product (T) The small pin (6) of the slider is processed with a secondary core (61) for forming the ear hole of the product (T) at the front end; the small slider seat (3) is formed with an inclined guide hole (3b) for inserting and matching with an inclined guide column (D) fixed on the upper mold; the inclined guide column (D) is inserted into the inclined guide hole (3b) when the mold is closed to push the small slider assembly (B) to move forward and close to the large slider (2), so as to achieve the locking and fixing of the slider mechanism in the mold; when the inclined guide column (D) is pulled out of the inclined guide hole (3b) when the mold is opened, it pushes the small slider assembly (B) to drive the slider pin to move backward, so as to achieve the one-time sliding out and loosening of the small slider assembly (B); the large slider seat (1) is connected with a core pulling cylinder (9), and the core pulling cylinder (9) pulls the large slider assembly (A) to drive the small slider assembly (B) to slide backward together after the small slider assembly (B) is loosened, so as to achieve the overall sliding out of the slider mechanism.

2. The double sliding structure based on the magnesium alloy mold slider according to claim 1 is characterized in that: The lower mold is provided with fixed guide plates (7) on both sides of the large slider seat (1) for providing guidance for the smooth movement of the large slider seat (1); the bottom of the fixed guide plate (7) is extended inward to form a support rail (71) for cooperating with the bottom edge sliding support of the large slider seat (1), and the inner side surface of the fixed guide plate (7) is processed with a guide groove (7a); the two side surfaces of the large slider seat (1) are provided with guide convex strips (11) for slidingly cooperating with the guide groove (7a) of the fixed guide plate (7), or the two side surfaces of the large slider seat (1) are processed with positioning grooves, and the positioning grooves are embedded with guide convex strips (11) for slidingly cooperating with the guide groove (7a) of the fixed guide plate (7).

3. The double sliding structure based on the magnesium alloy mold slider according to claim 2 is characterized in that: On the top surface of the large slider seat (1), on both sides of the slider cavity (1a), there are formed slider guide plates (12) for providing guidance for the smooth movement of the small slider assembly (B), and the inner side surface of the slider guide plate (12) is processed with a guide groove (12a), and the two side surfaces of the small slider seat (3) and the two side surfaces of the small slider (4) are processed with guide rails (B1) for sliding and guiding with the guide groove (12a) of the slider guide plate (12).

4. The double sliding out structure based on the magnesium alloy mold slider according to claim 3 is characterized in that: The small slider (4) is fixedly mounted on the front end surface of the small slider seat (3) by means of bolts, the small slider seat (3) is processed with four first light holes (3a) for the bolts to pass through, and the small slider (4) is formed with four first threaded holes (4a) for being spirally connected with the bolts corresponding to the first light holes (3a); the front end surface of the small slider seat (3) is formed with two first positioning blocks (31) symmetrically in the upper and lower parts, and the small slider (4) is correspondingly formed with two first positioning grooves (41) for positioning and matching with the first positioning blocks (31) of the small slider seat (3).

5. The double sliding structure based on the magnesium alloy mold slider according to claim 4 is characterized in that: The small slider (4) is formed with a large step hole (4b) for the large slider pin (5) to pass through and a small step hole (4c) for the small slider pin (6) to pass through; the rear end of the large slider pin (5) is formed with a large annular boss (52) for positioning and matching with the step surface of the large step hole (4b), and the rear end of the small slider pin (6) is formed with a small annular boss (62) for positioning and matching with the step surface of the small step hole (4c); the large annular boss (52) and the small annular boss (62) are press-fitted and clamped between the small slider seat (3) and the small slider (4).

6. The double sliding out structure based on the magnesium alloy mold slider according to claim 5 is characterized in that: A cooling liquid cavity (5a) for rapidly reducing the temperature of the main core (51) is axially formed in the large pin (5) of the slider, an internal flow channel (3c) for supplying cooling liquid is machined in the small slider seat (3), an inlet and outlet connection hole (3d) for connecting the internal flow channel (3c) and the cooling liquid cavity (5a) is opened on the front end surface of the small slider seat (3) at a position corresponding to the large annular boss (52), and an annular sealing groove is also machined on the front end surface of the small slider seat (3) at a position corresponding to the large annular boss (52), and a sealing ring (M) is installed in the annular sealing groove to cooperate with the rear end surface of the large annular boss (52) to prevent leakage of cooling liquid; a connecting port (3e) for connecting a cooling liquid inlet and return hose is machined at the rear end of the small slider seat (3); and a hose through hole (1b) for allowing the cooling liquid inlet and return hose to pass is formed in the large slider seat (1).

7. The double sliding out structure based on the magnesium alloy mold slider according to claim 6 is characterized in that: The large slider (2) is fixedly mounted on the front end surface of the large slider seat (1) by means of bolts. The large slider seat (1) is provided with four second light holes (1c) for the bolts to pass through. The large slider (2) is provided with second threaded holes (2c) for being spirally connected to the bolts at positions corresponding to the second light holes (1c). The front end surface of the large slider seat (1) is provided with two second positioning blocks (13) symmetrically formed on the left and right sides. The large slider (2) is correspondingly provided with two second positioning grooves (21) for positioning and cooperating with the second positioning blocks (13) of the large slider seat (1).

8. The double sliding out structure based on the magnesium alloy mold slider according to claim 7 is characterized in that: The large slider (2) is formed with a large sliding hole (2a) for the large slider pin (5) to slide through and a small sliding hole (2b) for the small slider pin (6) to slide through; the sliding clearance of the small slider assembly (B) is 12 mm, and the length of the secondary core (61) is less than 12 mm; two sets of slider pins that can simultaneously mold two products (T) are symmetrically installed on the small slider assembly (B).

9. The double sliding out structure based on the magnesium alloy mold slider according to claim 8 is characterized in that: The core-pulling cylinder (9) is fixedly mounted on a support frame plate (8), and the front end of a cylinder rod (91) of the core-pulling cylinder (9) passes through the support frame plate (8) and is connected to a connecting slot (1d) formed on a large slider seat (1); a switch touch plate (92) that moves synchronously with the cylinder rod (91) is fixedly mounted on the cylinder rod (91), and a touch switch (81) that contacts the switch touch plate (92) to control the core-pulling distance of the core-pulling cylinder (9) is mounted on the front end surface of the support frame plate (8).

10. The double sliding out structure based on the magnesium alloy mold slider according to claim 9 is characterized in that: The core-pulling oil cylinder (9) is provided with a guide rod (93) for providing guidance for the smooth movement of the cylinder rod (91), and the switch touch plate (92) is provided with a guide rod sliding hole for slidingly matching with the guide rod (93).

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