Battery box bidirectional core-pulling mold with built-in locking oil cylinder

Abstract

The utility model relates to the technical field of injection molds, and discloses a battery box bidirectional core-pulling mold with a built-in locking oil cylinder, which comprises a concave mold and a convex mold, the concave mold is fixed on a concave mold base plate, the concave mold base plate is fixed on a second base plate, and the second base plate is fixedly connected with a concave mold fixing plate; the two ends of the female die are each provided with a core pulling assembly. The core pulling assembly comprises a sliding block, a pin hole is formed in the side, facing the female die base plate, of the sliding block, one end of a lock pin is inserted into the pin hole in a sleeved mode, the female die base plate is inserted into the lock pin in a sleeved mode, the other end of the lock pin is fixedly connected with a piston rod of a locking oil cylinder, and the locking oil cylinder is fixed to the side face, facing the second base plate, of the female die base plate. The locking oil cylinder is arranged in the second receding groove of the second base plate and the first receding groove of the female die fixing plate. The symmetry of the mold can be improved through core pulling at the two ends, the occupied space of the mold can be greatly reduced through the built-in locking oil cylinder, and the attractiveness of the mold is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a battery box bidirectional core-pulling mold with a built-in locking oil cylinder. Background Art

[0002] Battery box 9 as the instructions attached Figure 6 As shown, a large through hole 901 is provided at the end of the battery box, and a plurality of small through holes 902 coaxially arranged with the large through hole are provided on the plurality of middle bosses of the battery box. The existing battery box is generally manufactured by injection molding, and the molding of the small through holes generally requires core pulling; the existing battery box mold adopts single-sided core pulling, and the third oil cylinder for pushing the core pulling and the fourth oil cylinder for locking the core pulling are both fixed on the outer wall of the mold, so that the mold occupies a large space, which is not conducive to the later assembly work of the mold, and the appearance of the mold is low. Utility Model Content

[0003] The utility model aims to provide a battery box two-way core-pulling mold with a built-in locking cylinder. The symmetry of the mold can be increased by core-pulling at both ends, and the space occupied by the mold can be greatly reduced and the aesthetics of the mold can be improved by building the locking cylinder inside.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A two-way core-pulling die for a battery box with a built-in locking cylinder, comprising a concave die and a convex die, wherein the concave die is fixed on a concave die pad, the concave die pad is fixed on a second pad, and the second pad is fixedly connected to a concave die fixing plate; a core-pulling assembly is provided at each end of the concave die;

[0006] The core pulling assembly includes a slider, a pin hole is provided on the side of the slider facing the die pad, the pin hole is inserted into one end of a locking pin, the locking pin is inserted into the die pad, the other end of the locking pin is fixedly connected to the piston rod of a locking cylinder, and the locking cylinder is fixed on the side surface of the die pad facing the second pad; the locking cylinder is placed in the second make way groove of the second pad and the first make way groove of the die fixing plate.

[0007] Through the above technical solution, when the concave mold and the convex mold are closed, the slider drives the core pulling to be inserted into the corresponding core pulling hole, and then the locking cylinder drives the locking pin to be inserted into the pin hole of the slider, thereby locking the slider and locking the core pulling position;

[0008] Since the locking oil cylinder is arranged in the first make way groove and the second make way groove, the locking oil cylinder does not extend out of the mold, thereby effectively reducing the space occupied by the mold and improving the aesthetic appearance of the mold.

[0009] By setting two core-pulling components, core-pulling can be performed at both ends, which can improve the symmetry of the mold, and thus can also increase the aesthetics of the mold to a certain extent.

[0010] The present utility model is further configured as: the pin hole is a rectangular tapered hole with a large outer and small inner setting;

[0011] The locking pin is in a rectangular body shape, and a tapered insertion portion is formed at the end of the locking pin; a rectangular through hole matching with the locking pin is formed on the female die backing plate.

[0012] Through the above technical solution, the tapered setting of the tapered insertion portion can facilitate the insertion of the locking pin into the pin hole and also provide a guiding function during the insertion process; after the tapered insertion portion is inserted into the pin hole, the position of the slider is restricted and locked, thereby fixing the core-pulling on the slider.

[0013] The present utility model is further configured as: a shielding plate is formed on the outer side of the first relief groove.

[0014] Through the above technical solution, the locking oil cylinder can be shielded by the shielding plate, so that the existence of the locking oil cylinder cannot be seen more from the outside, thereby further improving the integrity and appearance aesthetics of the mold.

[0015] The present utility model is further configured as: a large core-pulling hole is formed at the end of the female die, and small core-pulling holes coaxial with the large core-pulling hole are formed on a plurality of linearly evenly distributed convex platforms inside the female die;

[0016] The core-pulling component further includes a short core-pulling and a long core-pulling. The inner end of the long core-pulling is inserted into the corresponding small core-pulling hole, and the outer end of the long core-pulling is inserted and fixed in the short core-pulling;

[0017] The inner end of the short core-pulling is inserted into the large core-pulling hole, and the outer end of the short core-pulling is inserted and fixed on the slider;

[0018] The slider is fixed at the end of the piston rod of the second oil cylinder, the second oil cylinder is fixed on the oil cylinder support, and the oil cylinder support is fixedly connected with the female die backing plate.

[0019] Through the above technical solution, when core-pulling is required, the locking oil cylinder drives the locking pin to脱离 the pin hole, then the second oil cylinder drives the slider to move outwards, the slider drives the short core-pulling to move outwards, and the short core-pulling drives the long core-pulling to move outwards, thereby completing the core-pulling work; after the core-pulling is脱离 from the injection-molded battery case, the battery case can be ejected by the mold ejector pin.

[0020] The present utility model is further configured as: a "C"-shaped sliding groove is formed on the oil cylinder support, and a pair of rectangular limiting strips are fixed at the opening of the "C"-shaped sliding groove;

[0021] The cross-section of the slider is in a "convex" shape. The slider is inserted into the "C"-shaped chute, and the two shoulders of the slider are pressed against the rectangular limiting strip.

[0022] Through the above technical solution, due to the "convex" shape setting of the slider and the limitation of the two rectangular limiting strips, the slider can only move axially in the "C"-shaped chute and cannot move in any other direction, thereby improving the stability of the core-pulling position.

[0023] The present utility model is further configured as: a tapered round head is formed at the inner end of the long core-pulling.

[0024] By setting the tapered round head, it is convenient for the long core-pulling to be inserted into the small core-pulling hole.

[0025] The outstanding effect of the present utility model is:

[0026] Compared with the prior art, by core-pulling at both ends, the symmetry of the mold can be increased, and by integrating the locking oil cylinder, the space occupied by the mold can be significantly reduced and the aesthetics of the mold can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the present utility model;

[0028] Figure 2 is a sectional view of the present utility model;

[0029] Figure 3 is Figure 2 a partial enlarged view of A;

[0030] Figure 4 is Figure 2 a sectional view taken along B-B;

[0031] Figure 5 is Figure 2 a partial enlarged view of C;

[0032] Figure 6 is a three-dimensional schematic diagram of the battery box of the present utility model.

[0033] Reference numerals: 10, female die; 11, female die backing plate; 12, second backing plate; 13, female die fixing plate;

[0034] 101, large core-pulling hole; 102, boss; 103, small core-pulling hole;

[0035] 111, rectangular through hole;

[0036] 121, second relief groove;

[0037] 131, first relief groove; 132, shielding plate;

[0038] 20, male die;

[0039] 30. Core-pulling assembly; 301. Slide block; 3011. Pin hole; 302. Locking pin; 3021. Tapered insertion part; 303. Locking oil cylinder; 304. Short core-pulling; 305. Long core-pulling; 3051. Tapered round head; 306. Oil cylinder support; 3061. "C"-shaped chute; 307. Rectangular limit strip; 308. Second oil cylinder. Detailed implementation manners

[0040] The following combines the accompanying drawings and embodiments to further describe in detail the detailed implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0041] The following reference is made to Figures 1 to 6 to illustrate the present utility model:

[0042] As Figure 1 , Figure 2 shown, a two-way core-pulling die for a battery box with a built-in locking oil cylinder includes a female die 10 and a male die 20. The female die 10 is fixed on a female die backing plate 11, the female die backing plate 11 is fixed on a second backing plate 12, and the second backing plate 12 is fixedly connected to a female die fixing plate 13. Each end of the female die 10 is provided with a core-pulling assembly 30.

[0043] As Figure 3 shown, the core-pulling assembly 30 includes a slide block 301. A pin hole 3011 is provided on one side of the slide block 301 facing the female die backing plate 11. One end of a locking pin 302 is inserted into the pin hole 3011, the locking pin 302 is inserted into the female die backing plate 11, and the other end of the locking pin 302 is fixedly connected to the piston rod of a locking oil cylinder 303. The locking oil cylinder 303 is fixed on one side of the female die backing plate 11 facing the second backing plate 12. The locking oil cylinder 303 is placed in a second relief groove 121 of the second backing plate 12 and a first relief groove 131 of the female die fixing plate 13.

[0044] After the female die and the male die are closed, the slide block drives the core-pulling to insert into the corresponding core-pulling hole, and then the locking oil cylinder drives the locking pin to insert into the pin hole of the slide block, thereby locking the slide block and locking the core-pulling position.

[0045] Since the locking oil cylinder is placed in the first relief groove and the second relief groove, the locking oil cylinder does not extend out of the die, which can effectively reduce the space occupied by the die and improve the appearance beauty of the die.

[0046] By providing two core-pulling assemblies, core-pulling can be performed at both ends, which can improve the symmetry of the die and also increase the appearance beauty of the die to a certain extent.

[0047] The pin hole 3011 is a rectangular tapered hole with a large outer and small inner setting.

[0048] The lock pin 302 is in the shape of a rectangular body, and a tapered insertion part 3021 is formed at the end of the lock pin 302; a rectangular through hole 111 that matches the lock pin 302 is formed on the die holder plate 11.

[0049] The tapered setting of the tapered insertion part facilitates the insertion of the lock pin into the pin hole and can also provide a guiding function during the insertion process; after the tapered insertion part is inserted into the pin hole, the position of the slider is restricted and locked, thereby fixing the core pulling on the slider.

[0050] As Figure 2 shown, a shielding plate 132 is formed on the outside of the first relief groove 131.

[0051] The shielding plate can shield the locking oil cylinder, so that the existence of the locking oil cylinder cannot be seen more from the outside, thereby further improving the integrity and appearance beauty of the mold.

[0052] As Figure 3 shown, a large core pulling hole 101 is formed at the end of the female die 10, and small core pulling holes 103 coaxial with the large core pulling hole 101 are formed on a plurality of linearly evenly distributed bosses 102 inside the female die 10;

[0053] The core pulling assembly 30 further includes a short core pull 304 and a long core pull 305. The inner end of the long core pull 305 is inserted into the corresponding small core pulling hole 103, and the outer end of the long core pull 305 is inserted and fixed in the short core pull 304;

[0054] The inner end of the short core pull 304 is inserted into the large core pulling hole 101, and the outer end of the short core pull 304 is inserted and fixed on the slider 301;

[0055] The slider 301 is fixed to the end of the piston rod of the second oil cylinder 308. The second oil cylinder 308 is fixed to the oil cylinder support 306, and the oil cylinder support 306 is fixedly connected to the die holder plate 11.

[0056] When core pulling is required, the locking oil cylinder drives the lock pin to disengage from the pin hole, and then the second oil cylinder drives the slider to move outward. The slider drives the short core pull to move outward, and the short core pull drives the long core pull to move outward, thereby completing the core pulling work; after the core pull disengages from the injection-molded battery case, the battery case can be ejected by the mold ejector pin.

[0057] As Figure 4 shown, a "C"-shaped chute 3061 is formed on the oil cylinder support 306, and a pair of rectangular limit strips 307 are fixed at the opening of the "C"-shaped chute 3061;

[0058] The cross section of the slider 301 is in the shape of a "convex", and the slider 301 is inserted into the "C"-shaped chute 3061, and the two shoulders of the slider 301 are pressed against the rectangular limit strips 307.

[0059] Through the "convex" shape setting of the slider, and restricted by two rectangular limiting strips, the slider can only move axially in the "C"-shaped chute 3061 and cannot move in any other direction, thereby improving the stability of the core-pulling position.

[0060] Such as Figure 5 As shown, a conical round head 3051 is formed at the inner end of the long core-pulling 305.

[0061] By setting the conical round head, it is convenient for the long core-pulling to be inserted into the small core-pulling hole.

[0062] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made. These improvements and modifications made under the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A battery box bidirectional core-pulling die with a built-in locking cylinder, comprising a die (10) and a punch (20), wherein the die (10) is fixed on a die backing plate (11), the die backing plate (11) is fixed on a second backing plate (12), and the second backing plate (12) is fixedly connected to a die fixing plate (13); characterized in that: A core-pulling assembly (30) is provided at each end of the female die (10). The core-pulling assembly (30) includes a slider (301). A pin hole (3011) is provided on the side of the slider (301) facing the female die backing plate (11). One end of a locking pin (302) is inserted into the pin hole (3011). The locking pin (302) is inserted into the female die backing plate (11). The other end of the locking pin (302) is fixedly connected to the piston rod of a locking oil cylinder (303). The locking oil cylinder (303) is fixed on the side surface of the female die backing plate (11) facing the second backing plate (12). The locking oil cylinder (303) is placed in the second relief groove (121) of the second backing plate (12) and the first relief groove (131) of the female die fixing plate (13).

2. According to claim 1, a battery box bidirectional core-pulling mold with a built-in locking cylinder, characterized in that: The pin hole (3011) is a rectangular tapered hole with a larger outer diameter and a smaller inner diameter. The locking pin (302) is in a rectangular body shape, and a tapered insertion part (3021) is formed at the end of the locking pin (302). A rectangular through hole (111) matching the locking pin (302) is formed on the female die backing plate (11).

3. According to claim 2, a battery box bidirectional core-pulling mold with a built-in locking cylinder, characterized in that: A shielding plate (132) is formed on the outer side of the first relief groove (131).

4. According to claim 1, a battery box bidirectional core-pulling mold with a built-in locking cylinder, characterized in that: A large core-pulling hole (101) is formed at the end of the female die (10). Small core-pulling holes (103) coaxial with the large core-pulling hole (101) are formed on a plurality of linearly distributed convex platforms (102) inside the female die (10). The core-pulling assembly (30) further includes a short core-pulling member (304) and a long core-pulling member (305). The inner end of the long core-pulling member (305) is inserted into the corresponding small core-pulling hole (103). The outer end of the long core-pulling member (305) is inserted into and fixed in the short core-pulling member (304). The inner end of the short core-pulling member (304) is inserted into the large core-pulling hole (101). The outer end of the short core-pulling member (304) is inserted into and fixed on the slider (301). The slider (301) is fixed to the end of the piston rod of a second oil cylinder (308). The second oil cylinder (308) is fixed on an oil cylinder support (306). The oil cylinder support (306) is fixedly connected to the female die backing plate (11).

5. A two-way core-pulling mold for a battery box with a built-in locking cylinder according to claim 4, characterized in that: An "L"-shaped sliding groove (3061) is formed on the oil cylinder support (306). A pair of rectangular limiting strips (307) are fixed at the opening of the "L"-shaped sliding groove (3061). The cross section of the slider (301) is in a "convex" shape. The slider (301) is inserted into the "L"-shaped sliding groove (3061). The two shoulders of the slider (301) are pressed against the rectangular limiting strips (307).

6. A two-way core-pulling mold for a battery box with a built-in locking cylinder according to claim 4, characterized in that: A tapered round head (3051) is formed at the inner end of the long core-pulling member (305).

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