Locking mechanism for injection mold

Abstract

The utility model discloses a locking mechanism for an injection mold, which relates to the technical field of injection molds and comprises a base, a positioning mold is fixedly mounted at the center of the outer top surface of the base, a movable mold is arranged on the outer top surface of the positioning mold, and an injection hole is connected to the center of the outer top surface of the movable mold in a penetrating manner. First limiting assemblies used for vertically fixing the positioning mold and the movable mold are arranged at the left end and the right end of the outer top face of the base. The driving motor drives the first rotating shaft rod to drive the sliding block to move relatively in the transverse notch, then the two U-shaped blocks are pushed to abut against the outer surface of the first connecting block and the outer surface of the second connecting block, the two U-shaped blocks and the first connecting block and the second connecting block are mutually fixed by screwing the positioning screw, limiting of the movable mold and the positioning mold in the vertical position is achieved, and the machining efficiency is improved. And the locking efficiency when the injection mold is locked is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field especially relates to a locking mechanism for injection mold. BACKGROUND

[0002] Injection mold is a kind of tool for producing plastic product, in the injection process, in order to reduce the influence of thermal expansion and cold shrink to the maximum, need to lock injection mold with the help of locking mechanism, to get the molding product, and again through the opening and closing of locking mechanism, the molding product is taken out, these operations injection mold locking mechanism have played a huge role.

[0003] The existing injection mold locking mechanism is not conducive to the horizontal and vertical limiting fixation of the injection mold quickly and efficiently during use, so when the molten plastic in the creep state is injected into the mold, the mold will generate thermal expansion force, which is easy to force the mold to deviate under the action of thermal expansion force, affect the appearance and the qualified rate of injection molding product, and also affect the work progress of injection molding production. Therefore, the technical personnel in the art provide a locking mechanism for injection mold to solve the problems raised in the above background. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a locking mechanism for injection mold, which solves the problem that the horizontal and vertical limiting fixation of the injection mold is not conducive to quick and efficient in the above background technology, so when the molten plastic in the creep state is injected into the mold, the mold will generate thermal expansion force, which is easy to force the mold to deviate under the action of thermal expansion force, affect the appearance and the qualified rate of injection molding product, and also affect the work progress of injection molding production.

[0005] To achieve the above purpose, the utility model realizes through the following technical scheme: a locking mechanism for injection mold, including base, the outer top surface center position of base is fixedly installed with positioning mold, the outer top surface of positioning mold is equipped with movable mold, the outer top surface center position of movable mold is connected with injection hole, the left and right ends of the outer top surface of base are provided with limiting assembly one for vertical fixation of positioning mold and movable mold;

[0006] The outer wall of the positioning mold is provided with a straight groove, the outer bottom surface of the movable mold is fixedly installed with a straight block matched with the two straight grooves, the two straight blocks are inserted into the inner side of the two straight grooves, and the opposite side of the two straight blocks is provided with a limiting assembly two for horizontal fixation of the positioning mold and the movable mold.

[0007] As a further technical solution of the present invention, the limiting component 1 includes a through-type transverse slot opened at both ends of the outer top surface of the base, and a rotating shaft rod 1 is installed on the inner side walls of the two transverse slots for common rotation. The outer circumferential surface of the rotating shaft rod 1 is provided with threads in opposite directions at both ends and located inside the two transverse slots, and sliders are threadedly connected to the threads. Connecting block 1 and connecting block 2 are respectively fixedly installed on the left and right outer walls of the positioning mold and the movable mold.

[0008] As a further technical solution of the present invention, connecting plates are provided at both ends of the outer top surface of the base and corresponding to the two transverse slots. One end of the two connecting plates is fixedly connected to the two sliders, and the other ends of the two connecting plates are fixedly installed with corresponding U-shaped blocks. The inner top surfaces of the two U-shaped blocks are in contact with the outer top surfaces of the two groups of connecting blocks one, and the inner bottom surfaces of the two U-shaped blocks are in contact with the outer bottom surfaces of the two groups of connecting blocks two. At the same time, the two U-shaped blocks and the two groups of connecting blocks one and two are fixedly connected to each other by two positioning screws.

[0009] As a further technical solution of the present invention, one end of the rotating shaft extends to the outside of the base and is fixedly connected to the output end of the driving motor fixedly installed on the right outer wall of the base.

[0010] As a further technical solution of the present invention, the second limiting component includes square plates symmetrically installed on the outer walls on opposite sides of the two straight blocks, and two rotating shafts are symmetrically installed on the outer surfaces corresponding to each other of the two square plates. A clamping plate is fixedly installed on the outer circumferential surface of the two rotating shafts, and clamping grooves are provided on the outer walls of the front and rear sides of the positioning mold and at both ends of the outside of the straight groove.

[0011] As a further technical solution of the present invention, a card block is fixedly installed at the opposite end of the two card plates, and the two card blocks are inserted into the inner sides of the two card slots. At the same time, one end of the two rotating shaft rods 2 extends to the outer bottom surface of one of the square plates and is fixedly installed with a gear, and the two gears are meshedly connected. Secondly, the other end of the two rotating shaft rods 2 extends to the outer top surface of another square plate, and one of the rotating shaft rods 2 is fixedly connected to the output end of the small driving motor fixedly installed on the outer top surface of the square plate.

[0012] As a further technical solution of the present invention, a sunken circular groove is provided on the outer top surface of the positioning mold, and a circular plug-in block adapted to the circular groove is fixedly installed on the outer bottom surface of the movable mold, and the circular plug-in block is inserted into the inner side of the circular groove.

[0013] The utility model provides a locking mechanism for an injection mold, which has the following beneficial effects compared with the prior art:

[0014] 1. This design is a locking mechanism for an injection mold. A driving motor is provided as a power source to drive a rotating shaft rod to drive a slider to move closer to or away from each other inside a transverse slot, thereby pushing two U-shaped blocks to abut against the outer surfaces of two sets of connecting blocks one and two, and screwing the positioning screws to fix them to each other, thereby realizing the vertical position limitation of the movable mold and the positioning mold, and effectively improving the locking efficiency when locking the injection mold.

[0015] 2. The present invention relates to a locking mechanism for an injection mold. A small driving motor is provided to drive one of the rotating shafts 2 to rotate, and the other rotating shaft 2 is synchronously driven to rotate under the meshing transmission of the gears, so that the card plate drives the card block to be inserted into the inner side of the card slot, thereby realizing the horizontal position limitation of the movable mold and the positioning mold, further improving the locking efficiency when locking the injection mold, effectively avoiding the phenomenon of the movable mold and the positioning mold being offset due to thermal expansion, and ensuring the quality of the injection molded products and the qualified rate of the injection molded products. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Fig. 1 It is a schematic diagram of the three-dimensional structure of a locking mechanism for an injection mold;

[0017] Fig. 2 It is a schematic diagram of a cross-sectional three-dimensional structure of a locking mechanism for an injection mold;

[0018] Fig. 3 The figure is a schematic diagram of the overall structure of a locking mechanism for an injection mold.

[0019] In the picture:

[0020] Base; 101, positioning mold; 102, movable mold; 103, injection hole; 104, straight groove; 105, straight block;

[0021] Limiting assembly 1; 201, transverse notch; 202, rotating shaft 1; 203, slider; 204, connecting block 1; 205, connecting block 2; 206, connecting plate; 207, U-shaped block; 208, positioning screw; 209, driving motor;

[0022] Limiting assembly 2; 301, square plate; 302, rotating shaft 2; 303, clamping plate; 304, clamping slot; 305, clamping block; 306, gear; 307, small driving motor;

[0023] Circular groove; 401, circular plug. DETAILED DESCRIPTION

[0024] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments, and all the other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative labor fall within the protection scope of the present application.

[0025] Please refer to Figs. 1-3The utility model provides a locking mechanism technical scheme for injection mold, including base 1, the outer top surface center position department of base 1 is fixedly installed with positioning mould 101, is equipped with movable mould 102 on the outer top surface of positioning mould 101, the outer top surface center position department of movable mould 102 is connected with injection hole 103 through, the left and right ends of base 1 outer top surface are provided with the limiting assembly no. 2 for the vertical fixing of positioning mould 101 and movable mould 102, limiting assembly no. 2 includes the horizontal slot 201 of being set up in the both ends of base 1 outer top surface and being through -going, the inner side wall of two horizontal slots 201 is rotatably installed with rotating shaft lever no. 202, and the both ends of rotating shaft lever no. 202 and located the inside of two horizontal slots 201 are equipped with the thread of opposite direction, and the thread place all thread sleeve has slider 203, and the left and right sides outer wall of positioning mould 101 and movable mould 102 are fixedly installed with link block no. 204 and link block no. 205 respectively, and the both ends of base 1 outer top surface and corresponding two horizontal slots 201 are equipped with connecting plate 206, one end of two connecting plates 206 is fixedly connected with two sliders 203, and the other end of two connecting plates 206 is fixedly installed with mutually corresponding U-shaped block 207, the inner top surface of two U-shaped blocks 207 all with the outer top surface of two groups link block no. 204 abuts, the inner bottom surface of two U-shaped blocks 207 all with the outer bottom surface of two groups link block no. 205 abuts, simultaneously two U-shaped blocks 207 and two groups link block no. 204, link block no. 205 are fixedly connected through two positioning screw rods 208, one end of rotating shaft lever no. 202 extends to the outside of base 1 and is fixedly connected with the output end of drive motor 209 fixedly installed on the right outer wall of base 1, the outer top surface of positioning mould 101 is equipped with the sunken meandering recess 4, the outer bottom surface of movable mould 102 is fixedly installed with meandering insert block 401 compatible with meandering recess 4, and meandering insert block 401 is inserted in the inner side of meandering recess 4. First let meandering insert block 401 be inserted in the inner side of meandering recess 4, to let movable mould 102 and positioning mould 101 be connected with each other, then start drive motor 209 to drive rotating shaft lever no. 202 to rotate, to this in the thread of opposite direction effect comes the slider 203 in the inner side of horizontal recess and moves oppositely close or far away each other, and then let connecting plate 206 drive two U-shaped blocks 207 respectively with the outer surface of two groups link block no. 204, link block no. 205 on the left and right sides outer wall of positioning mould 101 and movable mould 102 abut each other, then in the screw positioning screw rod 208 is fixedly connected, thereby realizes movable mould 102 and positioning mould 101 in the limiting fixing of vertical position, effectively improve the locking efficiency and sealing connectivity when locking injection mold.

[0026] The straight grooves 104 are arranged on the front and back outer walls of the positioning mold 101, the straight blocks 105 are fixedly installed at the both ends of the outer bottom surface of the movable mold 102 and are matched with the two straight grooves 104, the opposite outer walls of the two straight blocks 105 are provided with the limiting assembly two 3 for transversely fixing the positioning mold 101 and the movable mold 102, the limiting assembly two 3 comprises the square plates 301 which are symmetrically installed on the opposite outer walls of the two straight blocks 105, the two square plates 301 are symmetrically and rotatably installed with the two rotating shafts two 302 on the mutually corresponding outer surfaces, the clamping plates 303 are fixedly installed on the outer circumferential surfaces of the two rotating shafts two 302, the clamping grooves 304 are arranged on the outer walls of the positioning mold 101 and are located at the outer ends of the straight grooves 104, the clamping blocks 305 are fixedly installed on the opposite ends of the two clamping plates 303 and are inserted into the inner sides of the two clamping grooves 304, one end of the two rotating shafts two 302 extends to the outer bottom surface of one of the square plates 301 and is fixedly installed with the gear 306, the two gears 306 are meshingly connected, and the other end of the two rotating shafts two 302 extends to the outer top surface of the other square plate 301 and is fixedly connected with the output end of the driving small motor 307 fixedly installed on the outer top surface of the square plate 301.

[0027] The working principle of the utility model is as follows: when using, first make the back-shaped plug block 401 inserted into the inner side of the back-shaped groove 4, and synchronously make the two straight blocks 105 inserted into the inner sides of the two straight grooves 104, so that the movable mold 102 and the positioning mold 101 are connected with each other.

[0028] At the same time start drive motor 209 drive rotating shaft rod one 202 rotation, to this in the opposite direction thread effect under the drive slider 203 in the horizontal groove inside the opposite moving close or far, further let the connecting plate 206 drive two U-shaped block 207 respectively with positioning mold 101 and movable mold 102 left and right two sides outer wall on the connecting block one 204, connecting block two 205 outer surface each other abutment limit, then twist positioning screw 208 will be fixed, so as to move the mold 102 and positioning mold 101 in vertical position on the limit fixed.

[0029] At the same time in the start drive small motor 307 drive one of the rotating shaft rod two 302 gear 306 rotation, gear 306 through the meshing drive to drive another gear 306 rotation, to let two rotating shaft rod two 302 in two square plate 301 between synchronous rotation, further push two blocks of card 303 drive card block 305 plug in the positioning mold 101 and movable mold 102 front and back two sides outer wall on the card slot 304, realize the movable mold 102 and positioning mold 101 in the horizontal position on the limit fixed, further improve the locking efficiency and sealing connection when locking the injection mold, effectively avoid the phenomenon of the displacement of movable mold 102 and positioning mold 101 due to thermal expansion force, guarantee the appearance of injection molding and the pass rate of injection molding.

[0030] Secondly, when the positioning mold 101 and movable mold 102 are locked and fixed, the molten state of the injection material is injected into the injection space formed between the positioning mold 101 and the movable mold 102 along the injection hole 103 for production and processing.

[0031] Finally, when the injection product is cooled, the above steps are operated in reverse, that is, the injection product is taken out and processed, so as to improve the working progress of the injection production.

[0032] The above is only the preferred embodiment of the present application, it should be pointed out that, for those skilled in the technical field, without departing from the principle of the present application, can make a number of improvements and refinements, these improvements and refinements should be considered as the protection scope of the present application. The structure, device and operation method not described and explained in the present application, such as no special description and limitation, according to the conventional means of the art.

Claims

1. A locking mechanism for an injection mold, characterized in that: The invention comprises a base (1), a positioning mold (101) is fixedly installed at the center position of the outer top surface of the base (1), a movable mold (102) is provided on the outer top surface of the positioning mold (101), an injection hole (103) is connected through the center position of the outer top surface of the movable mold (102), and a limiting component (2) for vertically fixing the positioning mold (101) and the movable mold (102) is provided at the left and right ends of the outer top surface of the base (1); Straight grooves (104) are provided on the outer walls on both sides of the front and rear sides of the positioning mold (101), and straight blocks (105) adapted to the two straight grooves (104) are fixedly installed at both ends of the outer bottom surface of the movable mold (102), and the two straight blocks (105) are inserted into the inner sides of the two straight grooves (104). At the same time, a limiting component 2 (3) for horizontally fixing the positioning mold (101) and the movable mold (102) is provided on the outer walls on the opposite side of the two straight blocks (105).

2. A locking mechanism for an injection mold according to claim 1, characterized in that: The limiting component 1 (2) includes a through-type transverse slot (201) provided at both ends of the outer top surface of the base (1), and a rotating shaft rod 1 (202) is rotatably mounted on the inner side walls of the two transverse slots (201), and threads with opposite directions are provided at both ends of the outer peripheral surface of the rotating shaft rod 1 (202) and located inside the two transverse slots (201), and sliders (203) are threadedly sleeved on the threads, and a connecting block 1 (204) and a connecting block 2 (205) are fixedly mounted on the left and right outer walls of the positioning mold (101) and the movable mold (102), respectively.

3. A locking mechanism for an injection mold according to claim 2, characterized in that: Connecting plates (206) are provided at both ends of the outer top surface of the base (1) and corresponding to the two transverse notches (201). One end of the two connecting plates (206) is fixedly connected to the two sliders (203), and the other ends of the two connecting plates (206) are fixedly installed with corresponding U-shaped blocks (207). The inner top surfaces of the two U-shaped blocks (207) are in contact with the outer top surfaces of the two groups of connecting blocks (204), and the inner bottom surfaces of the two U-shaped blocks (207) are in contact with the outer bottom surfaces of the two groups of connecting blocks (205). At the same time, the two U-shaped blocks (207) and the two groups of connecting blocks (204) and connecting blocks (205) are fixedly connected to each other through two positioning screws (208).

4. The locking mechanism for an injection mold according to claim 2, characterized in that: One end of the rotating shaft (202) extends to the outside of the base (1) and is fixedly connected to the output end of the driving motor (209) fixedly mounted on the right outer wall of the base (1).

5. The locking mechanism for an injection mold according to claim 1, characterized in that: The second limiting component (3) includes a square plate (301) symmetrically mounted on the outer wall of the two opposite sides of the two straight blocks (105), two rotating shafts (302) are symmetrically mounted on the outer surfaces corresponding to each other of the two square plates (301), and a clamping plate (303) is fixedly mounted on the outer peripheral surface of the two rotating shafts (302). The outer walls of the front and rear sides of the positioning mold (101) are provided with clamping grooves (304) at both ends outside the straight groove (104).

6. The locking mechanism for an injection mold according to claim 5, characterized in that: A card block (305) is fixedly installed at the opposite end of the two card plates (303), and the two card blocks (305) are inserted into the inner sides of the two card slots (304). At the same time, one end of the two rotating shaft rods (302) extends to the outer bottom surface of one of the square plates (301) and is fixedly installed with a gear (306). The two gears (306) are meshedly connected. Secondly, the other end of the two rotating shaft rods (302) extends to the outer top surface of another square plate (301), and one of the rotating shaft rods (302) is fixedly connected to the output end of the small driving motor (307) fixedly installed on the outer top surface of the square plate (301).

7. The locking mechanism for an injection mold according to claim 1, characterized in that: The outer top surface of the positioning mold (101) is provided with a sunken circular groove (4), and the outer bottom surface of the movable mold (102) is fixedly provided with a circular plug (401) adapted to the circular groove (4), and the circular plug (401) is inserted into the inner side of the circular groove (4).

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