Split insert exhaust shrink-proof mechanism

Abstract

The utility model discloses a split insert exhaust shrink-proof mechanism which comprises a fixed mold assembly, a movable mold assembly and an ejection assembly, the fixed mold assembly is arranged above the movable mold assembly, and the ejection assembly is installed below the movable mold assembly. By arranging the first third-order sliding block insert core in the first sliding block body and arranging the second third-order sliding block insert core in the second sliding block body, the first third-order sliding block insert core and the second third-order sliding block insert core can be spliced and matched during mold closing, so that the rear ends of the first heating insert and the second heating insert can be connected to be in contact with a heating rod, and the forming temperature of the sliding block is provided; the first exhaust funnel insert and the second exhaust funnel insert are arranged at the thick position of the product, exhaust grooves are formed in the two sides of the first exhaust funnel insert and the two sides of the second exhaust funnel insert, gas in a closed cavity is effectively exhausted, the defects of burn, insufficient filling and the like are overcome, and then the first accurate positioning insert achieves accurate positioning; and the heating insert I, the heating insert II, the exhaust funnel insert I and the exhaust funnel insert II are precisely positioned through the hanging table, so that the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a split insert exhaust and shrinkage prevention mechanism. Background Art

[0002] An injection mold is a tool for producing plastic products; it is also a tool that gives plastic products a complete structure and precise dimensions. Injection molding is a processing method used in the mass production of certain parts with complex shapes. Specifically, it refers to the high-pressure injection of heated and melted plastic into the mold cavity by an injection molding machine, and after cooling and solidification, a molded product is obtained. When an injection mold is used to inject a workpiece, in order to better inject fluid plastic into the mold cavity, so that the fluid plastic can better fill the mold cavity and make the workpiece have better quality, a venting structure is usually set on the mold to remove the air in the mold cavity. The existing venting structure is usually to set a venting hole structure on the concave mold plate or insert. This is not wrong when using a single insert, but when using multiple inserts, it is still easy to cause shrinkage and burns due to the thick product. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a split insert exhaust and shrinkage prevention mechanism to solve the problems existing in the above-mentioned background technology.

[0004] A split insert exhaust and shrinkage prevention mechanism comprises a fixed mold component, a movable mold component and an ejector component, wherein the fixed mold component is arranged above the movable mold component, and the ejector component is installed below the movable mold component, a locking block is fixed to the left side of the lower end of the fixed mold component, an inclined guide column is fixed to the left side of the lower end of the fixed mold component and to the right of the locking block, a slider seat is movably penetrated outside the inclined guide column, the bottom of the slider seat is slidably connected to the movable mold component, the inclined surface of the slider seat is in contact with the inclined surface of the locking block, a slider body is fixed to the right end of the slider seat, and a three-step A slider insert one, a locking block two is fixed on the right side of the lower end of the fixed mold assembly, an inclined guide column two is fixed on the right side of the lower end of the fixed mold assembly and on the left side of the locking block two, a slider seat two is movably penetrated outside the inclined guide column two, the bottom of the slider seat two is slidably connected with the movable mold assembly, the inclined surface of the slider seat two is in contact with the inclined surface of the locking block two, a slider body two is fixed on the left end of the slider seat two, a three-stage slider insert two is embedded in the slider body two, the three-stage slider insert two is spliced ​​and matched with the three-stage slider insert one, and heating rods inserted into the slider seat one and the slider seat two are installed on both sides of the fixed mold assembly.

[0005] Preferably, the fixed mold assembly includes a fixed mold taking plate, a runner stripper plate, a fixed mold plate and a fixed mold core, the runner stripper plate is installed at the lower end of the fixed mold taking plate, the fixed mold plate is installed at the lower end of the runner stripper plate, and the fixed mold core is installed in the fixed mold plate.

[0006] Preferably, the movable mold assembly includes a movable mold plate, square iron, a movable mold taking plate and a movable mold core, the square iron has a pair and is respectively fixed on the front and rear sides of the lower end of the movable mold plate, the movable mold taking plate is fixed between the lower ends of the square irons, and the movable mold core is installed in the movable mold plate.

[0007] Preferably, the ejection assembly comprises an ejector plate and an ejector bottom plate, the ejector bottom plate is slidably connected between the square irons, and the ejector plate is fixed to the upper end of the ejector bottom plate.

[0008] Preferably, the bottom of the slider seat 1 and the slider seat 2 are connected to the top of the movable template through a track sliding, the locking block 1, the inclined guide column 1, the inclined guide column 2 and the locking block 2 are all fixed to the bottom of the fixed template, and the slider body 1 and the slider body 2 are located between the movable model core and the fixed model core.

[0009] Preferably, the three-step slider insert one is composed of a heating insert one, an exhaust pipe insert one, and a precision positioning insert one. The heating insert one is fixed to a slider seat one, the exhaust pipe insert one is fixed to the right end of the heating insert one, and the precision positioning insert one is fixed to the right end of the exhaust pipe insert one. The three-step slider insert two includes a heating insert two, an exhaust pipe insert two, and a precision positioning insert two. The heating insert two is fixed to a slider seat two, the exhaust pipe insert two is fixed to the left end of the heating insert two, and the precision positioning insert two is fixed to the left end of the exhaust pipe insert two. The precision positioning insert two is plugged into the precision positioning insert one, and exhaust grooves are provided on both sides of the exhaust pipe insert one and the exhaust pipe insert two.

[0010] The utility model provides a split insert exhaust and shrinkage prevention mechanism, which has the following beneficial effects:

[0011] The split insert exhaust and shrinkage prevention mechanism is provided with a three-step slider insert 1 in a slider body 1 and a three-step slider insert 2 in a slider body 2. When the mold is closed, the three-step slider insert 1 and the three-step slider insert 2 can be spliced ​​and matched. In this way, the heating insert 1 and the heating insert 2 can be connected at the rear end to contact the heating rod to provide the molding temperature of the slider and reduce shrinkage deformation. The exhaust pipe insert 1 and the exhaust pipe insert 2 are provided at the thick part of the product, and exhaust grooves are provided on both sides to effectively exhaust the gas in the closed cavity and solve the problems of burns and insufficient filling. Then, the insert 1 is precisely positioned to achieve precise positioning, and the heating insert 1 and the heating insert 2, the exhaust pipe insert 1 and the exhaust pipe insert 2 are precisely positioned through the hanging table, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic structural diagram of a three-step slider insert 1 and a three-step slider insert 2 of the utility model.

[0014] In the figure:

[0015] 1-fixed mold taking plate, 2-runner stripping plate, 3-fixed mold plate, 4-movable mold plate, 5-square iron, 6-elevator plate, 7-elevator bottom plate, 8-movable mold taking plate, 9-fixed mold core, 10-movable mold core, 11-slider body one, 12-three-step slider insert one, 13-slider seat one, 14-oblique guide column one, 15-locking block one, 16-slider body two, 17-three-step slider insert two, 18-slider seat two, 19-oblique guide column two, 20-locking block two, 21-heating rod, A1-heating insert one, B1-exhaust pipe insert one, C1-precision positioning insert one, A2-heating insert two, B2-exhaust pipe insert two, C2-precision positioning insert two. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with 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 of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-2 The utility model provides a technical solution: a split insert exhaust and shrinkage prevention mechanism, including a fixed mold assembly, a movable mold assembly and an ejector assembly, wherein the fixed mold assembly is arranged above the movable mold assembly, and the ejector assembly is installed below the movable mold assembly, the fixed mold assembly includes a fixed mold take-up plate 1, a runner stripper plate 2, a fixed mold plate 3 and a fixed mold core 9, the runner stripper plate 2 is installed at the lower end of the fixed mold take-up plate 1, the fixed mold plate 3 is installed at the lower end of the runner stripper plate 2, the fixed mold core 9 is installed in the fixed mold plate 3, the movable mold assembly includes a movable mold plate 4, a square iron 5, a movable mold take-up plate 8 and a movable mold The core 10, the square iron 5 has a pair and is respectively fixed on the front and rear sides of the lower end of the movable mold plate 4, the movable mold taking-up plate 8 is fixed between the lower ends of the square iron 5, the movable mold core 10 is installed in the movable mold plate 4, the ejection assembly includes a push rod plate 6 and a push rod bottom plate 7, the push rod bottom plate 7 is slidably connected between the square irons 5, and the push rod plate 6 is fixed at the upper end of the push rod bottom plate 7. When the mold is opened, the runner stripping plate 2 and the fixed mold plate 3 are separated first, and the runner is disconnected from the product. As the mold opening continues, the fixed mold taking-up plate 1 and the runner stripping plate 2 are separated, the material handle is removed from the runner stripping plate 2, and the manipulator takes out the material handle;

[0018] A locking block 15 is fixed to the left side of the lower end of the fixed mold assembly, and an inclined guide column 14 is fixed to the left side of the lower end of the fixed mold assembly and to the right of the locking block 15. A slider seat 13 is movably penetrated outside the inclined guide column 14. The bottom of the slider seat 13 is slidably connected to the movable mold assembly. The inclined surface of the slider seat 13 is in contact with the inclined surface of the locking block 15. A slider body 11 is fixed to the right end of the slider seat 13. A three-step slider insert 12 is embedded in the slider body 11. A locking block 20 is fixed to the right side of the lower end of the fixed mold assembly, and an inclined guide column 19 is fixed to the right side of the lower end of the fixed mold assembly and to the left of the locking block 20. A slider seat 18 is movably penetrated outside the inclined guide column 19. The bottom of the slider seat 18 is slidably connected to the movable mold assembly. The inclined surface of the slider seat 18 is in contact with the inclined surface of the locking block 20. A slider body 16 is fixed to the left end of the slider seat 18. A three-step slider insert 17 is embedded in the slider body 16. The three-stage slider insert 2 17 is spliced ​​with the three-stage slider insert 1 12. The two sides of the fixed mold assembly are installed with heating rods 21 inserted into the slider seat 13 and the slider seat 2 18. The bottom of the slider seat 13 and the slider seat 2 18 are connected to the top of the movable mold plate 4 through a track sliding connection. The locking block 15, the inclined guide column 14, the inclined guide column 2 19 and the locking block 20 are all fixed to the bottom of the fixed mold plate 3. The slider body 11 and the slider body 2 16 are located between the movable mold core 10 and the fixed mold core. 9, when the mold is opened to the set position, the fixed mold plate 3 and the movable mold plate 4 are separated, and the inclined guide column 14 fixed on the fixed mold plate 3 can make the slider seat 13 move to the left, and the inclined guide column 2 19 can make the slider seat 2 18 move to the right, so as to realize the side withdrawal action of the slider body 11 and the slider body 2 16. After the movable mold side is opened to the set distance, the mold opening action is completed, and the ejector bar of the molding machine acts on the ejection system to realize the ejection of the product from the cavity. The actions during mold closing and mold opening are opposite in sequence.

[0019] The three-step slider insert 12 is composed of a heating insert A1, an exhaust pipe insert B1, and a precision positioning insert C1. The heating insert A1 is fixed to a slider seat 13, the exhaust pipe insert B1 is fixed to the right end of the heating insert A1, and the precision positioning insert C1 is fixed to the right end of the exhaust pipe insert B1. The three-step slider insert 2 17 includes a heating insert A2, an exhaust pipe insert B2, and a precision positioning insert C2. The heating insert A2 is fixed to a slider seat 2 18, the exhaust pipe insert B2 is fixed to the left end of the heating insert A2, and the precision positioning insert C2 is fixed to the left end of the exhaust pipe insert B2. The precision positioning insert C2 is plugged into the precision positioning insert C1. Exhaust grooves are provided on both sides of the exhaust pipe insert B1 and the exhaust pipe insert B2. A three-step slider insert 12 is arranged in the block body 11, and a three-step slider insert 2 17 is arranged in the slider body 2 16. When the mold is closed, the three-step slider insert 12 and the three-step slider insert 2 17 can be spliced ​​and matched. In this way, the rear end of the heating insert A1 and the heating insert A2 can be connected to contact the heating rod 21 to provide the molding temperature of the slider and reduce shrinkage deformation. The exhaust pipe insert B1 and the exhaust pipe insert B2 are arranged at the thick part of the product, and exhaust grooves are arranged on both sides to effectively remove the gas in the closed cavity and solve the problems of burns and insufficient filling. Then, the precision positioning insert C1 and the precision positioning insert C2 are used to achieve precise positioning. The heating insert A1 and the heating insert A2, the exhaust pipe insert B1 and the exhaust pipe insert B2 are precisely positioned through the hanging table, thereby improving practicality.

[0020] Working principle: When opening the mold, the runner stripper plate 2 and the fixed mold plate 3 are separated first, and the runner is disconnected from the product. As the mold opening continues, the fixed mold taking plate 1 and the runner stripper plate 2 are separated, and the material handle is removed from the runner stripper plate 2. The manipulator takes out the material handle. When the mold is opened to the set position, the fixed mold plate 3 and the movable mold plate 4 are separated, and the inclined guide column 14 fixed on the fixed mold plate 3 can move the slider seat 13 to the left, and the inclined guide column 2 19 can move the slider seat 2 18 to the right, thereby realizing the side withdrawal action of the slider body 11 and the slider body 2 16. After the movable mold side is opened to the set distance, the mold opening action is completed, and the ejector bar of the molding machine acts on the ejection system to realize the ejection of the product from the cavity.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A split insert exhaust and shrinkage prevention mechanism, comprising a fixed mold assembly, a movable mold assembly and an ejector assembly, wherein the fixed mold assembly is arranged above the movable mold assembly, and the ejector assembly is installed below the movable mold assembly, characterized in that: A locking block (15) is fixed on the left side of the lower end of the fixed mold assembly, and an inclined guide column (14) is fixed on the left side of the lower end of the fixed mold assembly and located on the right side of the locking block (15). A slider seat (13) is movably penetrated outside the inclined guide column (14). The bottom of the slider seat (13) is slidably connected to the movable mold assembly. The inclined surface of the slider seat (13) is in contact with the inclined surface of the locking block (15). A slider body (11) is fixed on the right end of the slider seat (13). A three-step slider insert (12) is embedded in the slider body (11). A locking block (20) is fixed on the right side of the lower end of the fixed mold assembly. A second inclined guide column (19) is fixed on the left side of the second locking block (20), and a second slider seat (18) is movably penetrated outside the second inclined guide column (19). The bottom of the second slider seat (18) is slidably connected with the movable mold assembly, and the inclined surface of the second slider seat (18) is in contact with the inclined surface of the second locking block (20). A second slider body (16) is fixed on the left end of the second slider seat (18), and a third-order slider insert (17) is embedded in the second slider body (16). The third-order slider insert (17) is spliced ​​with the third-order slider insert (12). The two side surfaces of the fixed mold assembly are equipped with heating rods (21) inserted into the first slider seat (13) and the second slider seat (18).

2. A split insert exhaust and shrinkage prevention mechanism according to claim 1, characterized in that: The fixed mold assembly comprises a fixed mold taking-up plate (1), a runner stripping plate (2), a fixed mold plate (3) and a fixed mold core (9); the runner stripping plate (2) is mounted at the lower end of the fixed mold taking-up plate (1), the fixed mold plate (3) is mounted at the lower end of the runner stripping plate (2), and the fixed mold core (9) is mounted in the fixed mold plate (3).

3. A split insert exhaust and shrinkage prevention mechanism according to claim 2, characterized in that: The movable mold assembly comprises a movable mold plate (4), a square iron (5), a movable mold taking plate (8) and a movable mold core (10), wherein the square iron (5) has a pair and is respectively fixed to the front and rear sides of the lower end of the movable mold plate (4), the movable mold taking plate (8) is fixed between the lower ends of the square iron (5), and the movable mold core (10) is installed in the movable mold plate (4).

4. A split insert exhaust and shrinkage prevention mechanism according to claim 3, characterized in that: The ejection assembly comprises an ejector plate (6) and an ejector bottom plate (7), wherein the ejector bottom plate (7) is slidably connected between the square irons (5), and the ejector plate (6) is fixed to the upper end of the ejector bottom plate (7).

5. The split insert exhaust and shrinkage prevention mechanism according to claim 3, characterized in that: The bottom of the slider seat 1 (13) and the slider seat 2 (18) are slidably connected to the top of the movable mold plate (4) via a track; the locking block 1 (15), the inclined guide column 1 (14), the inclined guide column 2 (19) and the locking block 2 (20) are all fixed to the bottom of the fixed mold plate (3); the slider body 1 (11) and the slider body 2 (16) are located between the movable mold core (10) and the fixed mold core (9).

6. A split insert exhaust and shrinkage prevention mechanism according to claim 1, characterized in that: The three-step slider insert (12) is composed of a heating insert (A1), an exhaust pipe insert (B1), and a precision positioning insert (C1). The heating insert (A1) is fixed to a slider seat (13). The exhaust pipe insert (B1) is fixed to the right end of the heating insert (A1). The precision positioning insert (C1) is fixed to the right end of the exhaust pipe insert (B1). The three-step slider insert (17) includes a heating insert (A2), an exhaust pipe insert (B1), and a precision positioning insert (C1). The heating insert 2 (A2) is fixed to the slider seat 2 (18), the exhaust pipe insert 2 (B2) is fixed to the left end of the heating insert 2 (A2), the precision positioning insert 2 (C2) is fixed to the left end of the exhaust pipe insert 2 (B2), the precision positioning insert 2 (C2) is plugged with the precision positioning insert 1 (C1), and exhaust grooves are provided on both sides of the exhaust pipe insert 1 (B1) and the exhaust pipe insert 2 (B2).

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