Mold for injection blow molding

Abstract

The utility model relates to an injection blow mold which comprises a first supporting plate, a first mold core and a second mold core are arranged on the first supporting plate, first cavities are formed in the first mold core and the second mold core, the width of the first mold core is gradually reduced in the direction close to the first supporting plate, and the width of the second mold core is gradually increased in the direction close to the first supporting plate. The planes of the opposite side walls of the first mold core and the second mold core are parallel; the second supporting plate is provided with a third mold core and a fourth mold core, the third mold core and the fourth mold core are each provided with a second cavity, the width of the third mold core is gradually decreased in the direction close to the second supporting plate, and the width of the fourth mold core is gradually increased in the direction close to the second supporting plate; the planes where the opposite side walls of the third mold core and the fourth mold core are located are parallel, and the first cavity and the second cavity are communicated and form a forming cavity. According to the mold for injection and blow molding, the overall flatness of the parting surface of the mold core in the injection and blow molding mold can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mould structure technical field especially relates to a blow -molding mould for injection. BACKGROUND

[0002] The horizontal injection blow molding process is a plastic forming process used for efficiently forming hollow containers in the current stage. The injection blow mold used in the horizontal injection blow molding process currently comprises two groups of modules arranged above and below, each group of modules comprises a plurality of mold cores, and the plurality of mold cores are penetrated and locked by a long screw. Since the locking nuts are located at the two ends of the screw, the force borne by each mold core is different, thereby causing the deformation amount of each mold core to be different. When the mold cores are positioned, deviation occurs, which causes a height difference to exist between the mold cores of the injection blow mold, the flatness is low, and thus the product quality is poor. SUMMARY

[0003] Therefore, the utility model wants to solve the technical problem of providing a blow -molding mould for injection, which can improve the overall flatness of the mold core parting surface of the injection blow mold.

[0004] To solve the above technical problems, the utility model provides a blow -molding mould for injection, which comprises: a first support plate, the first support plate is provided with a first mold core and a second mold core, the first mold core and the second mold core are both provided with a first cavity, the width of the first mold core gradually decreases towards the first support plate, the width of the second mold core gradually increases towards the first support plate, and the opposite side walls of the first mold core and the second mold core are parallel to the plane; a second support plate is provided with a third mold core and a fourth mold core, the third mold core and the fourth mold core are both provided with a second cavity, the width of the third mold core gradually decreases towards the second support plate, the width of the fourth mold core gradually increases towards the second support plate, and the opposite side walls of the third mold core and the fourth mold core are parallel to the plane, the third mold core can abut against the first mold core, the fourth mold core can abut against the second mold core, and the first cavity and the second cavity are communicated and constitute a forming cavity.

[0005] In an embodiment of the utility model, the first mold core, the second mold core, the third mold core and the fourth mold core are all provided with a plurality of, the first mold core and the second mold core are arranged in intervals.

[0006] In an embodiment of the utility model, there is a gap between the first mold core and the second mold core.

[0007] In an embodiment of the utility model, the first die core and the second die core are provided with a cooling channel communicated with each other, the first die core is provided with a sealing ring at the end corresponding to the cooling channel, and the sealing ring is located in the gap between the first die core and the second die core.

[0008] In an embodiment of the utility model, the first die core is provided with a first positioning block on the side abutting against the third die core, the third die core is provided with a first positioning groove on the side abutting against the first die core, and the first positioning block is clamped with the first positioning groove.

[0009] In an embodiment of the utility model, the first die core is further provided with a first positioning rod, the first positioning rod penetrates the first positioning block, the diameter of the first positioning rod gradually decreases from the end away from the first die core, and the first positioning groove is provided with a positioning hole matched with the first positioning rod.

[0010] In an embodiment of the utility model, the first die core is provided with a second positioning groove on the side abutting against the first supporting plate, the second positioning groove is clamped with a second positioning block, and the first supporting plate is provided with a third positioning groove clamped with the second positioning block.

[0011] In an embodiment of the utility model, the second positioning block is provided with a second positioning rod, and the second positioning rod is clamped with the first die core and the first supporting plate.

[0012] In an embodiment of the utility model, the first die core and the second die core are both provided with a third cavity communicated with the first cavity, the third die core and the fourth die core are both provided with a fourth cavity communicated with the second cavity, and the third cavity and the fourth cavity constitute an injection molding cavity.

[0013] In an embodiment of the utility model, a plurality of movable rods are further included, the movable rods are connected with the movable seats, the end of the movable rod can be located at the end of the forming cavity, the movable rods are arranged between the first die core and the third die core and between the second die core and the fourth die core, the movable rods are provided with positioning columns, the positioning columns are clamped with the first die core and the third die core, and the positioning columns are further clamped with the second die core and the fourth die core.

[0014] Compared with the prior art, the above technical scheme of the utility model has the following advantages:

[0015] The utility model relates to a kind of injection blow moulds, the side wall of first mould core and second mould core is guided, to position first mould core and second mould core, and by the inclination of first mould core and second mould core side wall is set, first mould core and second mould core can be stably fixed, and the pressure between first mould core and second mould core is same, positioning deviation cannot appear, to improve the overall flatness of mould core parting surface in injection blow mould, when first mould core and second mould core are assembled, position is exchanged, and operation step is simple, to improve injection blow mould overall assembly efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to make the content of the utility model more easily be clearly understood, according to the specific embodiment of the utility model and combining with the drawings, the utility model is further explained in detail.

[0017] Figure 1 It is the structure schematic diagram of a kind of injection blow mould of the utility model;

[0018] Figure 2 It is Figure 1 Partial schematic diagram;

[0019] Figure 3 It is Figure 2 Local enlarged view in A of it.

[0020] Description of the Drawings Reference Signs: 1, first support plate;2, second support plate;3, first mould core;4, second mould core;5, third mould core;6, fourth mould core;7, movable rod;11, guide column;21, guide;31, first positioning block;32, sealing ring;33, second positioning block;51, second cavity;52, fourth cavity;53, first positioning groove;71, movable seat;72, positioning column. DETAILED DESCRIPTION

[0021] The utility model is further explained in conjunction with the drawings and specific embodiment, so that those skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0022] Refer to Figures 1 to 3As shown, the utility model discloses a blow -molded mould for injection, include: first support board 1, be equipped with first mould kernel 3 and second mould kernel 4 on first support board 1, all be equipped with first cavity on first mould kernel 3 and second mould kernel 4, the width of first mould kernel 3 gradually reduces to the direction close to first support board 1, the width of second mould kernel 4 gradually increases to the direction close to first support board 1, the opposite side wall of first mould kernel 3 and second mould kernel 4 is parallel with the plane, second support board 2, be equipped with third mould kernel 5 and fourth mould kernel 6 on second support board 2, all be equipped with second cavity 51 on third mould kernel 5 and fourth mould kernel 6, the width of third mould kernel 5 gradually reduces to the direction close to second support board 2, the width of fourth mould kernel 6 gradually increases to the direction close to second support board 2, the opposite side wall of third mould kernel 5 and fourth mould kernel 6 is parallel with the plane, third mould kernel 5 can be with first mould kernel 3, fourth mould kernel 6 can be with second mould kernel 4, first cavity and second cavity 51 are communicated and constitute forming cavity.

[0023] The utility model discloses a blow -molded mould for injection, through the width of first mould kernel 3 gradually reduces to the direction close to first support board 1, the width of second mould kernel 4 gradually increases to the direction close to first support board 1, to make the side wall of first mould kernel 3 and second mould kernel 4 all be inclined plane and mutually parallel, when first mould kernel 3 and second mould kernel 4 are connected with first support board 1, through the side wall of first mould kernel 3 and second mould kernel 4 guide, to first mould kernel 3 and second mould kernel 4 positioning, and through the inclination of first mould kernel 3 and second mould kernel 4 side wall sets up, first mould kernel 3 and second mould kernel 4 can be stably fixed, and the pressure between first mould kernel 3 and second mould kernel 4 is identical, and positioning deviation will not appear, to improve the overall flatness of the mould kernel parting surface in blow -molded mould for injection, when the operation step of first mould kernel 3 and second mould kernel 4 are assembled, position is exchanged, to improve the overall assembly efficiency of blow -molded mould for injection.

[0024] Refer to Figure 1 As shown, first support board 1 and second support board 2 are in the form of a flat plate as a whole, and first support board 1 is arranged in parallel with second support board 2. A guide column 11 is vertically connected to the four corners of first support board 1, and a guide piece 21 is arranged at the four corners of second support board 2. The guide piece 21 is provided with a guide hole, and the guide column 11 is slidably connected with the guide hole, so as to facilitate the positioning of first support board 1 and second support board 2.

[0025] Refer to Figure 2 And Figure 3As shown, the first support plate 1 is provided with a first mold core 3 and a second mold core 4, the end faces of the first mold core 3 and the second mold core 4 are provided with a first cavity, the width of the first mold core 3 gradually decreases towards the first support plate 1, the width of the second mold core 4 gradually increases towards the first support plate 1, that is, the side walls of the first mold core 3 and the second mold core 4 are inclined surfaces, and the end faces are trapezoidal. The planes where the opposite side walls of the first mold core 3 and the second mold core 4 are located are parallel. The first mold core 3 and the second mold core 4 are provided with a plurality of first mold cores 3 and second mold cores 4, and the first mold core 3 and the second mold core 4 are arranged in intervals, that is, the two sides of the second mold core 4 are the first mold core 3. When the first mold core 3 and the second mold core 4 are connected with the first support plate 1, the inclined arrangement of the side walls of the first mold core 3 and the second mold core 4 can guide the installation of the first mold core 3 and the second mold core 4, thereby facilitating the positioning of the first mold core 3 and the second mold core 4. When the first mold core 3 and the second mold core 4 need to be exchanged or maintained, the corresponding first mold core 3 and / or second mold core 4 can be directly disassembled, thereby improving the installation and disassembly efficiency. The side walls of the first mold core 3 and the second mold core 4 abut each other, so that the first mold core 3 and the second mold core 4 are pressed against each other, and the pressure is the same, thereby fixing the positions of the first mold core 3 and the second mold core 4, and the end faces where the first cavities of the first mold core 3 and the second mold core 4 are located are located on the same plane, that is, the flatness of the parting surface after the first mold core 3 and the second mold core 4 are installed is improved.

[0026] The second support plate 2 is provided with a third mold core 5 and a fourth mold core 6, the end faces of the third mold core 5 and the fourth mold core 6 are provided with a second cavity 51, the width of the third mold core 5 gradually decreases towards the second support plate 2, the width of the fourth mold core 6 gradually increases towards the second support plate 2, the planes where the opposite side walls of the third mold core 5 and the fourth mold core 6 are located are parallel, the third mold core 5 and the fourth mold core 6 are provided with a plurality of third mold cores 5 and fourth mold cores 6, and the installation mode of the third mold core 5 and the fourth mold core 6 is the same as that of the first mold core 3 and the second mold core 4, which will not be described again.

[0027] The second support plate 2 can be moved by an external moving device, so that the end face of the third mold core 5 can abut against the end face of the first mold core 3, and the end face of the fourth mold core 6 can abut against the end face of the second mold core 4, thereby forming a molding cavity with the first cavity and the second cavity 51, and the injection molding product forms an injection molded part in the molding cavity.

[0028] The gap between the first die core 3 and the second die core 4 avoids cumulative errors caused by the abutment of the first die core 3 and the second die core 4, ensures accurate positioning, and eliminates mutual extrusion between the first die core 3 and the second die core 4 caused by thermal expansion during the operation of the first die core 3 and the second die core 4, thereby avoiding deformation of the molding cavity. The first die core 3 and the second die core 4 are both provided with a plurality of cooling channels that are in communication with each other, and the end of the first die core 3 corresponding to the cooling channel is provided with a sealing ring 32. The sealing ring 32 is located in the gap between the first die core 3 and the second die core 4, and the sealing ring 32 abuts against the side walls of the first die core 3 and the second die core 4, thereby fixing the positions of the first die core 3 and the second die core 4 and preventing the first die core 3 and the second die core 4 from shaking. The arrangement of the sealing ring 32 can prevent the cooling liquid from leaking out of the gap between the first die core 3 and the second die core 4, and the sealing ring 32 is elastic and can change in thickness with the thermal expansion of the first die core 3 and the second die core 4. The third die core 5 and the fourth die core 6 also have a gap and are provided with cooling channels, and the end of the third die core 5 corresponding to the cooling channel is provided with a sealing ring 32. The sealing ring 32 and the cooling channel are arranged in the same way as the first die core 3, and will not be described again.

[0029] The side of the first die core 3 abutting against the third die core 5 is provided with a first positioning block 31, and the side of the third die core 5 abutting against the first die core 3 is provided with a first positioning groove 53. The first positioning block 31 and the first positioning groove 53 are connected through clamping, thereby enabling the first die core 3 to be positioned with the third die core 5. The first die core 3 is also provided with a first positioning rod, the first positioning rod penetrates the first positioning block 31, and the diameter of the end of the first positioning rod away from the first die core 3 gradually decreases, i.e., the end of the first positioning rod is tapered. The bottom of the first positioning groove 53 is provided with a positioning hole that cooperates with the first positioning rod, i.e., the positioning hole is tapered. The cooperation between the first positioning rod and the positioning hole has a guiding effect on the movement of the third die core 5, thereby enabling the first die core 3 and the third die core 5 to be quickly positioned. The second die core 4 and the fourth die core 6 have the same structure as the first die core 3 and the third die core 5, respectively, and will not be described again.

[0030] The side of the first die core 3 abutting against the first support plate 1 is provided with a second positioning groove, and the second positioning groove is clamped with a second positioning block 33. The second positioning block 33 protrudes from the second positioning groove, and the first support plate 1 is provided with a third positioning groove clamped with the second positioning block 33. Thus, the second positioning block 33 is clamped with the second positioning groove and the third positioning groove at the same time, thereby enabling the first die core 3 to be positioned when connected with the first support plate 1. The second positioning block 33 is also vertically connected with a second positioning rod, and the second positioning rod is clamped with corresponding through holes in the first die core 3 and the first support plate 1, thereby enabling the first die core 3 and the first support plate 1 to be accurately positioned. The positioning structure of the second die core 4 and the first support plate 1 is the same as that of the first die core 3, and the positioning structure of the third die core 5, the fourth die core 6, and the second support plate 2 is the same as that of the first die core 3, and will not be described again.

[0031] The third cavity and the fourth cavity 52 constitute an injection cavity when the first core 3 abuts against the third core 5 and the second core 4 abuts against the fourth core 6, and the injection material enters the forming cavity from the injection cavity.

[0032] The movable rods 7 are connected with movable seats 71, the movable seats 71 are connected with external moving devices, so that the movable rods 7 can move, and the end portions of the movable rods 7 can be located at the end portions of the forming cavity, so as to seal the forming cavity, the movable rods 7 are arranged between the first core 3 and the third core 5 and between the second core 4 and the fourth core 6 and are clamped with the movable rods 7, the movable rods 7 are provided with positioning columns 72, the positioning columns 72 are in a cylindrical shape, the central axes of the positioning columns 72 are parallel to the end faces of the first core 3 and the third core 5, so that the positioning columns 72 can have the positioning and guiding effects on the first core 3, the third core 5, the second core 4 and the fourth core 6.

[0033] In use, the first core 3 and the second core 4 are sequentially connected with the first support plate 1 in an interval arrangement mode, the third core 5 and the fourth core 6 are sequentially connected with the second support plate 2 in an interval arrangement mode, then the movable seats 71 are moved, the movable rods 7 are clamped with the first core 3 and the second core 4, the second support plate 2 is moved, the third core 5 abuts against the first core 3, and the fourth core 6 abuts against the second core 4, finally the injection material is introduced into the injection cavity, and the injection material enters the forming cavity from the injection cavity to form the injection part in the forming cavity.

[0034] The first core 3 and the second core 4 are positioned by the side walls of the first core 3 and the second core 4, the first core 3 and the second core 4 can be stably fixed by the inclined arrangement of the side walls of the first core 3 and the second core 4, the pressure between the first core 3 and the second core 4 is the same, and the positioning deviation does not occur, so that the overall flatness of the core parting surface in the injection blow mold is improved, the operation steps are simple when the first core 3 and the second core 4 are assembled and the positions are exchanged, and the overall assembly efficiency of the injection blow mold is improved.

[0035] Obviously, the above embodiments are only examples for clearly illustrating, and are not intended to limit the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments are not enumerated, and the obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A mold for injection blow molding, characterized by, The utility model relates to a moulding device for injection moulding, which comprises: a first support plate, a first moulding core and a second moulding core are arranged on the first support plate, a first cavity is arranged on the first moulding core and the second moulding core, the width of the first moulding core gradually decreases towards the first support plate, the width of the second moulding core gradually increases towards the first support plate, the opposite side walls of the first moulding core and the second moulding core are parallel to the plane; a second support plate, a third moulding core and a fourth moulding core are arranged on the second support plate, a second cavity is arranged on the third moulding core and the fourth moulding core, the width of the third moulding core gradually decreases towards the second support plate, the width of the fourth moulding core gradually increases towards the second support plate, the opposite side walls of the third moulding core and the fourth moulding core are parallel to the plane, the third moulding core can abut against the first moulding core, the fourth moulding core can abut against the second moulding core, the first cavity and the second cavity are communicated and form a forming cavity.

2. The injection blow mold of claim 1, wherein: The first moulding core, the second moulding core, the third moulding core and the fourth moulding core are arranged in multiple, the first moulding core and the second moulding core are arranged in intervals.

3. The injection blow mold of claim 1, wherein: There is a gap between the first moulding core and the second moulding core.

4. The injection blow mold of claim 3, wherein: The first moulding core and the second moulding core are provided with a cooling channel communicated with each other, a sealing ring is arranged on the end of the first moulding core corresponding to the cooling channel, and the sealing ring is located in the gap between the first moulding core and the second moulding core.

5. The injection blow mold of claim 1, wherein: A first positioning block is arranged on one side of the first moulding core abutting against the third moulding core, a first positioning groove is arranged on one side of the third moulding core abutting against the first moulding core, and the first positioning block is clamped with the first positioning groove.

6. The injection blow mold of claim 5, wherein: A first positioning rod is further arranged on the first moulding core, the first positioning rod penetrates through the first positioning block, the diameter of the first positioning rod gradually decreases towards the end away from the first moulding core, and the bottom of the first positioning groove is provided with a positioning hole matched with the first positioning rod.

7. The injection blow mold of claim 1, wherein: A second positioning groove is arranged on one side of the first moulding core abutting against the first support plate, a second positioning block is clamped in the second positioning groove, and a third positioning groove matched with the second positioning block is arranged on the first support plate.

8. The injection blow mold of claim 7, wherein: A second positioning rod is arranged on the second positioning block, and the second positioning rod is clamped with the first moulding core and the first support plate.

9. The injection blow mold of claim 1, wherein: A third cavity communicated with the first cavity is arranged on the first moulding core and the second moulding core, a fourth cavity communicated with the second cavity is arranged on the third moulding core and the fourth moulding core, and the third cavity and the fourth cavity form an injection cavity.

10. The injection blow mold of claim 1, wherein: A plurality of movable rods are further arranged, the movable rods are connected with movable seats, the end of the movable rod can be located at the end of the forming cavity, the movable rods are arranged between the first moulding core and the third moulding core and between the second moulding core and the fourth moulding core, a positioning column is arranged on the movable rod, the positioning column is clamped with the first moulding core and the third moulding core, and the positioning column is further clamped with the second moulding core and the fourth moulding core.

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