Side core-pulling injection mold

Abstract

The utility model discloses a side core-pulling injection mold, which relates to the field of injection molds and comprises a lower mold, the top of the lower mold is butted with an upper mold, and the top of the inner side of the lower mold is sequentially provided with a movable block, a mold core and a fixed plate from left to right; a transverse rod is fixed to the left side of the movable block and connected to the outer portion of the left side of the lower die in a penetrating mode, and a first spring is installed between the transverse rod and the outer portion of the left side of the lower die. An inclined guide rod is mounted at the top of the inner side of the upper die and connected with a guide groove in an inserted mode, and the guide groove is formed in the top of a movable block; a cavity is formed in the bottom of the inner side of the upper die, core plates are symmetrically and slidably connected to the top of the cavity, and the tops of the core plates are connected into the die cavity in a penetrating mode. In the using process of the side core-pulling injection mold, mold closing and mold opening operations are carried out in a rapid butt joint mode, and the components are elastically and movably connected, so that automatic separation and mold stripping can be carried out after mold opening, and the side core-pulling injection mold is suitable for continuous machining and high in machining efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely is a side core-pulling injection mold. BACKGROUND

[0002] With the social development, the demand of consumers for plastic products is increasingly diversified, and product design not only pursues functionality, but also pays attention to aesthetics and innovation. Many plastic products have complex structures such as lateral holes, reverse buckles, and side recesses to meet specific functions or aesthetic requirements. Traditional injection molds are difficult to directly form plastic products with such complex structures due to structural limitations, and cannot meet production needs. As an important branch of injection molds, side core-pulling injection molds greatly expand the application range of injection molding processes and effectively meet the production needs of plastic products with lateral concave-convex structures. However, the existing side core-pulling injection molds have relatively slender core rods. This setting method can cause the core rod to have a long suspended part, which can easily cause the core rod to bend and deform after long-term use, which is not conducive to ensuring assembly precision and is not convenient for disassembly and assembly.

[0003] To solve the above-mentioned defects, the prior art (Chinese patent with publication number CN218876152U and publication date April 18, 2023) is a side core-pulling injection mold. The locking member is provided with an external thread portion, and the main body is provided with a threaded hole matched with the external thread portion. The setting of two locking members can reduce the inclination of the side of the limiting block close to the core rod due to improper assembly, which is conducive to ensuring the relative position accuracy of the core rod and the main body, and is conducive to ensuring the dimensional accuracy of the injection molded product. The mounting hole on the sliding block of the side core-pulling injection mold is composed of multiple secondary holes with diameters increasing in sequence, which can reduce the risk of breaking the drill bit with a smaller diameter due to excessive exposed length. After the core rod on the sliding block is installed in the mounting hole, both ends of the core rod can be supported, and the core rod is not prone to significant bending and deformation during long-term use, which is conducive to ensuring the assembly accuracy of the core rod and thus ensuring the structural dimensional accuracy of the injection molded product. Moreover, the core rod with insignificant deformation can be easily disassembled later.

[0004] In the above-mentioned scheme, the connection between the parts adopts a threaded connection method. During mold opening and closing, manual screwing operation is required for connection and unlocking, which is time-consuming and labor-intensive, inconvenient for convenient mold opening and closing operation, and not conducive to continuous processing, resulting in low processing efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a side core-pulling injection mold to solve the problem of the existing injection mold in the above-mentioned background technology. In the use process, the connection between the parts adopts a threaded connection method. During mold opening and closing, manual screwing operation is required for connection and unlocking, which is time-consuming and labor-intensive, inconvenient for convenient mold opening and closing operation, and not conducive to continuous processing, resulting in low processing efficiency.

[0006] To achieve the above object, the utility model provides following technical scheme: a side core-pulling injection mold, including lower mould, the top of lower mould is butt jointed with upper mould, the top surface of upper mould is equipped with injection port, the top of lower mould inside is sequentially provided with movable block, mould core and fixed plate from left to right, after the mould of upper mould and lower mould, the space between upper mould bottom and movable block, mould core and fixed plate is mould cavity;

[0007] The left side of movable block is fixed with cross bar, the cross bar is connected to the left side of lower mould outside, the first spring is installed between the cross bar and the left side of lower mould outside;

[0008] The top of the inside of the upper mould is provided with an inclined guide rod, the inclined guide rod is connected with the guide slot, and the guide slot is provided on the top of the movable block.

[0009] The inside bottom of the upper mould is provided with a cavity, the top of the cavity is symmetrically connected with a core plate, and the top of the core plate is connected with the mould cavity.

[0010] Further, the left bottom of the upper mould is provided with a guide block, the guide block is provided as a right-angled trapezoidal structure, the inclined edge of the guide block is in extrusion contact with the top of the movable block, the top of the movable block is provided with an inclined edge, and the inclined edge of the guide block is oppositely arranged with the inclined edge of the movable block.

[0011] Further, the movable block constitutes a horizontal sliding structure through the guide block, the cross bar and the first spring, the outside of the cross bar is connected with a side plate, the side plate is fixed to the left side of the lower mould, the right side of the movable block is fixed with a protruding block, and the right side of the protruding block is in contact with the side surface of the mould core after moving with the movable block.

[0012] Further, the top of the mould cavity is connected with the injection port, and the outside of the core plate on the left and right sides is respectively attached with the movable block and the side surface of the mould core and the side surface of the mould core and the fixed plate.

[0013] Further, the right top of the upper mould is provided with a positioning rod, the positioning rod is inserted into a positioning slot, the positioning slot is provided in the top middle of the fixed plate, and the lower mould and the upper mould constitute a stable butt joint structure through the positioning rod and the positioning slot.

[0014] Further, the bottom of the positioning slot is connected with a connecting rod through sliding, the bottom of the connecting rod extends into the cavity, the bottom of the connecting rod is fixedly connected with the core plate, and the second spring is installed between the bottom of the connecting rod and the bottom of the cavity.

[0015] Further, the connecting rod drives the core plate to constitute a vertical sliding structure through the positioning rod and the second spring, and the core plate moves to the same height of the top of the mould cavity.

[0016] Compared with the prior art, the utility model has the beneficial effects that

[0017] The side core-pulling injection mold is suitable for continuous processing, and the processing efficiency is high.

[0018] 1、Further, when the upper mold moves downward, the inclined edge of the guide block is in contact with the inclined edge of the movable block, and with the downward movement of the upper mold, the movable block is pushed to move inward, the movable block moves synchronously with the horizontal rod after being driven, and then the first spring is compressed, and the convex block on the side surface of the movable block is in contact with the side surface of the mold core, so that a groove or a hole can be formed in the model in the mold cavity after injection molding;

[0019] 2、Further, when the upper mold and the lower mold are closed, the positioning rod is inserted into the positioning groove, and then the connecting rod in the positioning groove is extruded and moves downward, the connecting rod is compressed after moving downward, and the core plate is moved downward to the bottom of the mold cavity after being synchronously driven by the connecting rod, thereby facilitating the injection molding operation;

[0020] 3、Further, when the mold is opened, the movable block loses the external binding force, the first spring drives the movable block to move outward through the horizontal rod, the second spring drives the connecting rod to move upward, the connecting rod moves upward and drives the core plate to move upward, the core plate moves upward and ejects the formed model, and the automatic mold opening operation is completed, thereby facilitating continuous processing. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole three-dimensional structure schematic diagram of the utility model;

[0022] Figure 2 It is a schematic diagram of the internal structure of the upper mold and the lower mold of the utility model;

[0023] Figure 3 It is a schematic diagram of the upper mold and the lower mold of the utility model;

[0024] Figure 4 It is a schematic diagram of the upper mold and the lower mold of the utility model;

[0025] Figure 5 It is a schematic diagram of the upper mold of the utility model from the bottom;

[0026] Figure 6 It is a schematic diagram of the lower mold of the utility model from the bottom.

[0027] In the figure: 1, the lower mold; 2, the upper mold; 3, the injection port; 4, the movable block; 5, the mold core; 6, the fixed plate; 7, the mold cavity; 8, the protruding block; 9, the guide block; 10, the crossbar; 11, the first spring; 12, the side plate; 13, the cavity; 14, the air hole; 15, the core plate; 16, the positioning rod; 17, the positioning groove; 18, the connecting rod; 19, the second spring; 20, the inclined guide rod; 21, the guide groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0029] Embodiment one: please refer to Figure 1 Figure 6 The utility model provides the following technical scheme: a kind of side core-pulling injection mold, including lower mold 1, the top of lower mold 1 is butt joint with upper mold 2, the top surface of upper mold 2 is set with injection port 3, the top of lower mold 1 inside is sequentially provided with movable block 4, mold core 5 and fixed plate 6 from left to right, after the closing of upper mold 2 and lower mold 1, the space formed between the bottom of upper mold 2 and movable block 4, mold core 5 and fixed plate 6 is mold cavity 7, the left side of movable block 4 is fixed with crossbar 10, crossbar 10 is connected to the left side outside of lower mold 1, first spring 11 is installed between crossbar 10 and the left side outside of lower mold 1, the top of the inside of upper mold 2 is installed with inclined guide rod 20, inclined guide rod 20 is connected with guide groove 21, guide groove 21 is set on the top of movable block 4, the bottom of the inside of upper mold 2 is set with cavity 13, the top of cavity 13 is symmetrically connected with core plate 15 slidingly, the top of core plate 15 is connected in mold cavity 7, air hole 14 is set on cavity 13 at equal intervals, air hole 14 facilitates heat dissipation, and speeds up model forming speed;

[0030] In the use, when the closing of upper mold 2 and lower mold 1, the inclined guide rod 20 of the bottom of upper mold 2 will be inserted into the guide groove 21 of the top of movable block 4, movable block 4 slides to inside, crossbar 10 compresses first spring 11, movable block 4 cooperates with mold core 5 and fixed plate 6 to form mold cavity 7 with upper mold 2, at the same time, core plate 15 moves down to the bottom of mold cavity 7, injection liquid is injected from the injection port 3 in the top of upper mold 2, injection liquid is cooled and formed in mold cavity 7, and then mold is opened, after mold opening, first spring 11 drives movable block 4 to move out and reset, and core plate 15 in cavity 13 moves up, so that the model after forming is automatically ejected, facilitating continuous processing.

[0031] Embodiment two:

[0032] ​On the basis of embodiment one, the guide block 9, the cross rod 10 and the first spring 11 are further disclosed, please refer to Figure 1 Figure 5 As shown in the figure, the specific structure is as follows: the left bottom of the upper die 2 is provided with the guide block 9, the guide block 9 is provided in a right-angled trapezoidal structure, the inclined edge of the guide block 9 is in extrusion contact with the top of the movable block 4, the top of the movable block 4 is provided with an inclined edge, the inclined edge of the guide block 9 is oppositely arranged with the inclined edge of the movable block 4, the movable block 4 forms a horizontal sliding structure through the guide block 9, the cross rod 10 and the first spring 11, the outer side of the cross rod 10 is penetratedly connected with the side plate 12, the side plate 12 is fixed to the left outer side of the lower die 1, the right side of the movable block 4 is fixed with the protrusion 8, the protrusion 8 is in contact with the side of the mold core 5 after moving with the movable block 4, the top of the mold cavity 7 is in communication with the injection port 3, and the outer sides of the left and right core plates 15 are respectively in contact with the side of the movable block 4, the side of the mold core 5 and the side of the mold core 5 and the side of the fixed plate 6;

[0033] In use, when the upper die 2 moves downward, the inclined edge of the guide block 9 is in contact with the inclined edge of the movable block 4, and the movable block 4 moves inward with the downward movement of the upper die 2, the movable block 4 drives the cross rod 10 to move synchronously after moving, thereby compressing the first spring 11, and the protrusion 8 on the side of the movable block 4 is in contact with the side of the mold core 5, so that a groove or a hole can be formed in the model in the mold cavity 7 after injection molding.

[0034] Embodiment three:

[0035] On the basis of embodiment two, the positioning rod 16, the positioning groove 17 and the second spring 19 are further disclosed, please refer to Figure 3 Figure 6 As shown in the figure, the specific structure is as follows: the right top of the upper die 2 is provided with the positioning rod 16, the positioning rod 16 is inserted into the positioning groove 17, the positioning groove 17 is opened in the middle of the top surface of the fixed plate 6, the lower die 1 and the upper die 2 form a stable butt joint structure through the positioning rod 16 and the positioning groove 17, the bottom of the positioning groove 17 is slidably penetratedly connected with the connecting rod 18, the bottom of the connecting rod 18 extends into the cavity 13, the bottom of the connecting rod 18 is fixedly connected with the core plate 15, the second spring 19 is arranged between the bottom of the connecting rod 18 and the bottom of the cavity 13, the connecting rod 18 drives the core plate 15 to form a vertical sliding structure through the positioning rod 16 and the second spring 19, and the core plate 15 moves up to the same height as the top of the mold cavity 7;

[0036] ​​In use, when the upper die 2 is closed with the lower die 1, the positioning rod 16 is inserted into the positioning groove 17, thereby extruding the connecting rod 18 in the positioning groove 17 to move downward, the connecting rod 18 is compressed after moving downward, the second spring 19 is compressed after the connecting rod 18 moves downward, and the core plate 15 is driven to move downward to the bottom of the mold cavity 7 after the connecting rod 18 moves downward, thereby facilitating the injection molding operation, when the mold is opened, the movable block 4 loses the external binding force, the first spring 11 drives the movable block 4 to move outward through the cross rod 10, the second spring 19 drives the connecting rod 18 to move upward, the connecting rod 18 drives the core plate 15 to move upward after moving upward, the core plate 15 drives the molded model to be ejected after moving upward, the automatic mold ejection operation is completed, and continuous processing is facilitated.

[0037] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0038] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A side core-pulling injection mold, comprising a lower mold (1), the top of the lower mold (1) is butt-jointed with an upper mold (2), the top surface of the upper mold (2) is provided with an injection port (3), the top inside of the lower mold (1) is sequentially provided with a movable block (4), a mold core (5) and a fixed plate (6) from left to right, after the upper mold (2) and the lower mold (1) are closed, the space formed between the bottom of the upper mold (2) and the movable block (4), the mold core (5) and the fixed plate (6) is a mold cavity (7). characterized in that The left side of the movable block (4) is fixedly provided with a cross bar (10), the cross bar (10) penetrates and connects to the left outside of the lower mold (1), a first spring (11) is installed between the cross bar (10) and the left outside of the lower mold (1). The top inside of the upper mold (2) is installed with an inclined guide rod (20), the inclined guide rod (20) is insertedly connected with a guide groove (21), the guide groove (21) is provided on the top of the movable block (4). The bottom inside of the upper mold (2) is provided with a cavity (13), the top of the cavity (13) is symmetrically and slidably connected with a core plate (15), the top of the core plate (15) penetrates and connects in the mold cavity (7).

2. A side core-pulling injection mold according to claim 1, characterized in that: The bottom left of the upper mold (2) is installed with a guide block (9), the guide block (9) is provided in a right-angled trapezoidal structure, the inclined edge of the guide block (9) is in extrusion contact with the top of the movable block (4), the top left of the movable block (4) is provided with an inclined edge, and the inclined edge of the guide block (9) is oppositely arranged with the inclined edge of the movable block (4).

3. A side core-pulling injection mold according to claim 2, characterized in that: The movable block (4) constitutes a horizontal sliding structure through the guide block (9), the cross bar (10) and the first spring (11), the outside of the cross bar (10) is penetratively connected with a side plate (12), the side plate (12) is fixed to the left outside of the lower mold (1), the right side of the movable block (4) is fixedly provided with a protruding block (8), and the right side of the protruding block (8) is in contact with the side surface of the mold core (5) after the movable block (4) moves.

4. A side core-pulling injection mold according to claim 1, characterized in that: The top of the mold cavity (7) is communicated with the injection port (3), and the outside of the core plate (15) on the left and right sides is respectively in contact with the side surface of the movable block (4) and the mold core (5) and the side surface of the mold core (5) and the fixed plate (6).

5. A side core-pulling injection mold according to claim 1, characterized in that: The top right of the upper mold (2) is installed with a positioning rod (16), the positioning rod (16) is insertedly connected with a positioning groove (17), the positioning groove (17) is provided in the middle of the top surface of the fixed plate (6), and the lower mold (1) and the upper mold (2) constitute a stable butt-joint structure through the positioning rod (16) and the positioning groove (17).

6. A side core-pulling injection mold according to claim 5, characterized in that: The bottom of the positioning groove (17) is slidably and penetratively connected with a connecting rod (18), the bottom of the connecting rod (18) extends into the cavity (13), the bottom of the connecting rod (18) is fixedly connected with the core plate (15), a second spring (19) is installed between the bottom of the connecting rod (18) and the bottom of the cavity (13), and air holes (14) are penetratively and equally provided on the cavity (13).

7. A side core-pulling injection mold according to claim 6, characterized in that: The connecting rod (18) drives the core plate (15) to constitute a vertical sliding structure through the positioning rod (16) and the second spring (19), and the core plate (15) moves to the same height at the top of the mold cavity (7).

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