Instrument board forming IMG mold straight ejector block drag hook demolding mechanism

Abstract

The utility model discloses a straight ejector block drag hook demolding mechanism of an instrument board forming IMG mold, and belongs to the technical field of injection molds. Comprising a fixed mold, a pouring gate, a runner, a forming mold, a forming cavity and a movable mold base, wherein the pouring gate is arranged on the fixed mold; the runner is arranged on the inner side of the fixed mold and is communicated and connected with the pouring gate; the forming mold is used for injection molding; the drag hook demoulding mechanism is mounted between the forming die and the fixed die, and the drag hook main body is in rolling friction with the guide frame through the rollers, so that the friction force of the drag hook main body in the working process is reduced, the abrasion is further reduced, and the service life of the drag hook demoulding mechanism is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, and more particularly to a straight ejector block hook demoulding mechanism of an IMG mold for forming an instrument panel. Background Art

[0002] Molds are various molds and tools used in industrial production to produce desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. Simply put, a mold is a tool used to create shaped objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly achieves the desired shape by changing the physical state of the material being molded.

[0003] Patent authorization number CN212666594U discloses an injection mold equipped with a demolding mechanism, comprising a movable mold and a fixed mold, the movable mold being connected to a movable mold backing plate, an insert being fixed on the side of the movable mold backing plate facing the movable mold, a mold cavity being formed between the movable mold and the fixed mold, one end of the insert being connected to the movable mold backing plate and the other end extending into the mold cavity for forming the injection molded product, the movable mold and the movable mold backing plate being connected by an opener and a shutter, and a hook mechanism being provided between the movable mold and the fixed mold, the hook mechanism comprising a hook base provided on the movable mold and a fixed mold hook provided on the fixed mold, the hook base being provided with a first through-hole, the fixed mold hook having a first end fixed to the fixed mold and a second end extending through the first through-hole, and a stopper provided on the second end for disengaging the fixed mold hook from the first through-hole, the fixed mold hook being slidably connected to the first through-hole. The mold is provided with a demolding mechanism that can achieve relative separation between the movable mold, the fixed mold, and the movable mold backing plate under specific conditions, thereby separating the insert from the deep cavity structure of the injection molded product.

[0004] However, the movable mold hook in patent authorization number CN212666594U suffers from friction and static friction with the hook base during operation, which causes the movable mold hook to wear more severely during operation, thereby reducing the service life of the movable mold hook. In order to increase the service life of the movable mold hook and reduce friction, we have proposed a straight ejector block hook demoulding mechanism for the instrument panel molding IMG mold to solve the above problems. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In response to the problems existing in the prior art, the purpose of the utility model is to provide a straight-top block hook demoulding mechanism for an instrument panel molding IMG mold, which utilizes rollers and guide frames to perform rolling friction on the hook body, thereby reducing the friction of the hook body during operation, thereby reducing wear and extending its service life.

[0007] 2. Technical solution

[0008] In order to solve the above problems, the present invention adopts the following technical solutions.

[0009] A straight ejector hook demoulding mechanism for an IMG mold for an instrument panel molding comprises a fixed mold, a gate provided on the fixed mold, a runner provided on the inner side of the fixed mold and conductively connected to the gate, a forming mold for injection molding, a forming cavity provided on the forming mold and conductively connected to the runner, and a movable mold base movably connected to the forming mold, wherein a pull hook demoulding mechanism is installed between the forming mold and the fixed mold;

[0010] The draw hook demoulding mechanism includes a module installed between the fixed mold and the forming mold, a limiting hole provided on one side of the gate and penetrating the fixed mold, a limiting pin movably installed on the inner side of the limiting hole and screwed to the module, a draw hook body symmetrically rotatably connected to the side wall of the module through a bracket, a roller rotatably connected to the top of the draw hook body, an assembly cavity provided at the root of the side wall of the module and corresponding to the draw hook body, a hard spring column installed on the inner side of the assembly cavity, a slot provided at the bottom edge of the module and engaged with the bottom end of the draw hook body, and a guide frame fixedly connected to the side wall of the fixed mold and with its inner facade in contact with the roller;

[0011] A straight top block body is fixedly connected to the upper surface of the movable mold base and penetrates the forming mold and extends to the inner side of the forming cavity.

[0012] Furthermore, a mold cavity is provided through the module, and the mold cavity is conductively connected to the flow channel and the molding cavity respectively.

[0013] Furthermore, one end of the hard spring column is connected to the inner end wall of the assembly cavity, and the other end of the hard spring column is connected to the hook body.

[0014] Furthermore, a guide slope is provided on the inner vertical surface of the guide frame, and the guide slope is in contact with the roller.

[0015] Furthermore, a first guide column is symmetrically fixedly connected to the lower surface of the fixed mold;

[0016] The module is provided with a first guide hole corresponding to the first guide column.

[0017] Furthermore, a second guide column is symmetrically fixedly connected to the upper surface of the movable mold base;

[0018] The forming mold is provided with a second guide hole connected to the second guide column.

[0019] Furthermore, the initial position of the top end of the straight ejector block body is flush with the inner wall of the molding cavity.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] In this solution, the movable mold base is dragged away from the fixed mold by the power mechanism of the injection molding machine, and the limit hole is used to cooperate with the limit pin to limit the draw hook demoulding mechanism. During this process, the roller arranged on the top of the draw hook body cooperates with the inner facade of the guide frame to roll, and under the elastic force of the hard spring column, the draw hook body is flipped toward the inner facade of the guide frame, so that the bottom end of the draw hook body is disengaged from the slot, and then the molding mold is disengaged from the draw hook demoulding mechanism, and then the movable mold base moves in the opposite direction, and under the guiding action, the straight ejector block body ejects the workpiece located on the inner side of the molding cavity, and the draw hook body uses the roller and the guide frame to perform rolling friction, thereby reducing the friction of the draw hook body during operation, thereby reducing wear and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 This is a side view schematic diagram of the fixed mold of the present utility model;

[0025] Figure 3 This is a schematic cross-sectional view of the fixed mold AA portion of the present invention;

[0026] Figure 4 It is an enlarged schematic diagram of part A of the present invention.

[0027] Description of the numbers in the figure:

[0028] 1. Fixed mold; 2. Molding mold; 3. Movable mold base; 4. Gate; 5. Runner; 6. Module; 7. Mold cavity; 8. Limit hole; 9. Limit pin; 10. Retractor body; 11. Roller; 12. Assembly cavity; 13. Hard spring column; 14. Slot; 15. Guide frame; 16. First guide column; 17. First guide hole; 18. Second guide column; 19. Second guide hole; 20. Molding cavity; 21. Straight ejector block body. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Example:

[0031] See also Figure 1-4 A straight ejector block and draw hook demoulding mechanism for an IMG mold for an instrument panel molding comprises a fixed mold 1, a gate 4 provided on the fixed mold 1, a runner 5 provided on the inner side of the fixed mold 1 and conductively connected to the gate 4, a forming mold 2 for injection molding, a forming cavity 20 provided on the forming mold 2 and conductively connected to the runner 5, and a movable mold base 3 movably connected to the forming mold 2. A draw hook demoulding mechanism is installed between the forming mold 2 and the fixed mold 1.

[0032] The draw hook demoulding mechanism includes a module 6 installed between the fixed mold 1 and the forming mold 2, a limiting hole 8 provided on one side of the gate 4 and penetrating the fixed mold 1, a limiting pin 9 movably installed on the inner side of the limiting hole 8 and screwed to the module 6, a draw hook body 10 symmetrically rotatably connected to the side wall of the module 6 through a bracket, a roller 11 rotatably connected to the top of the draw hook body 10, an assembly cavity 12 provided at the root of the side wall of the module 6 and corresponding to the draw hook body 10, a hard spring column 13 installed on the inner side of the assembly cavity 12, a slot 14 provided at the bottom edge of the module 6 and engaged with the bottom end of the draw hook body 10, and a guide frame 15 fixedly connected to the side wall of the fixed mold 1 and with the inner facade in contact with the roller 11;

[0033] The upper surface of the movable mold base 3 is fixedly connected with a straight top block body 21 that penetrates the forming mold 2 and extends to the inner side of the forming cavity 20;

[0034] It should be noted that when the straight ejector block hook demoulding mechanism of the instrument panel molding IMG mold is in use, the material for producing the instrument panel is injected into the molding cavity 20 through the gate 4 through the runner 5. After injection molding, the power mechanism of the injection molding machine drags the movable mold base 3 away from the fixed mold 1, and uses the limit hole 8 to cooperate with the limit pin 9 to limit the hook demoulding mechanism. During this process, the roller 11 set at the top of the hook body 10 rolls with the inner surface of the guide frame 15, and under the elastic force of the hard spring column 13, the hook body 10 is flipped toward the inner surface of the guide frame 15, so that the bottom end of the hook body 10 is disengaged from the slot 14, and then the molding mold 2 is disengaged from the hook demoulding mechanism. Then the movable mold base 3 moves in the opposite direction, and under the guiding action, the straight ejector block body 21 ejects the workpiece located inside the molding cavity 20. The hook body 10 uses the roller 11 to perform rolling friction with the guide frame 15, thereby reducing the friction of the hook body 10 during operation, thereby reducing wear and extending its service life.

[0035] like Figure 3 As shown, a mold cavity 7 is formed through the module 6, and the mold cavity 7 is electrically connected to the flow channel 5 and the molding cavity 20 respectively;

[0036] It should be noted that the material passes through the flow channel 5 and the mold cavity 7 in sequence and finally enters the inner side of the molding cavity 20, and the material is processed into a workpiece in the shape of an instrument panel.

[0037] like Figure 3 As shown, one end of the hard spring column 13 is connected to the inner end wall of the assembly cavity 12, and the other end of the hard spring column 13 is connected to the hook body 10. The inner vertical surface of the guide frame 15 is provided with a guide slope, and the guide slope is in contact with the roller 11;

[0038] It should be noted that, by utilizing the elastic force of the hard spring column 13, the roller 11 cooperates with the inner vertical surface of the guide frame 15 to roll downward, and under the elastic force of the hard spring column 13, the hook body 10 is flipped toward the inner vertical surface of the guide frame 15, so that the bottom end of the hook body 10 is disengaged from the slot 14. Conversely, the roller 11 cooperates with the inner vertical surface of the guide frame 15 to roll upward, and under the elastic force of the hard spring column 13, the hook body 10 is flipped toward the module 6, so that the bottom end of the hook body 10 is engaged with the slot 14.

[0039] like Figure 3 As shown, a first guide column 16 is symmetrically fixedly connected to the lower surface of the fixed mold 1;

[0040] A first guide hole 17 is provided at the module 6 and is connected to the first guide post 16. A second guide post 18 is symmetrically fixedly connected to the upper surface of the movable mold base 3.

[0041] A second guide hole 19 is provided at the forming die 2 and is connected to the second guide post 18;

[0042] It should be noted that the first guide column 16 is plugged into the first guide hole 17 to enable the module 6 to be docked with the fixed mold 1 accurately and stably;

[0043] The second guide column 18 is plugged and connected with the second guide hole 19 , so that the movable mold base 3 and the forming mold 2 can be docked accurately and stably.

[0044] like Figure 3 As shown, the initial position of the top of the straight top block body 21 is flush with the inner wall of the molding cavity 20;

[0045] It should be noted that ensuring the flatness of the inner side of the molding cavity 20 can improve the flatness of the injection molded workpiece.

[0046] During use: the material for producing the instrument panel is injected into the molding cavity 20 through the runner 5 via the gate 4. After injection molding, the power mechanism of the injection molding machine drags the movable mold base 3 away from the fixed mold 1, and uses the limit hole 8 to cooperate with the limit pin 9 to limit the draw hook demoulding mechanism. During this process, the roller 11 set at the top of the draw hook body 10 cooperates with the inner facade of the guide frame 15 to roll, and under the elastic force of the hard spring column 13, the draw hook body 10 is flipped toward the inner facade of the guide frame 15, so that the bottom end of the draw hook body 10 is disengaged from the slot 14, and then the molding mold 2 is disengaged from the draw hook demoulding mechanism, and then the movable mold base 3 moves in the opposite direction, and under the guiding action, the straight ejector block body 21 ejects the workpiece located inside the molding cavity 20.

[0047] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A straight ejector block hook demoulding mechanism for an IMG mold for forming an instrument panel, comprising a fixed mold (1), a gate (4) provided on the fixed mold (1), a flow channel (5) provided on the inner side of the fixed mold (1) and conductively connected to the gate (4), a forming mold (2) for injection molding, a forming cavity (20) provided on the forming mold (2) and conductively connected to the flow channel (5), and a movable mold base (3) movably connected to the forming mold (2), characterized in that: A draw hook demoulding mechanism is installed between the forming die (2) and the fixed die (1); The draw hook demoulding mechanism includes a module (6) installed between the fixed mold (1) and the forming mold (2), a limiting hole (8) arranged on one side of the gate (4) and passing through the fixed mold (1), a limiting pin (9) movably installed on the inner side of the limiting hole (8) and screwed to the module (6), a draw hook body (10) symmetrically connected to the side wall of the module (6) through a bracket, a roller (11) rotatably connected to the top of the draw hook body (10), an assembly cavity (12) provided at the root of the side wall of the module (6) and corresponding to the draw hook body (10), a hard spring column (13) installed on the inner side of the assembly cavity (12), a slot (14) arranged at the bottom edge of the module (6) and engaged with the bottom end of the draw hook body (10), and a guide frame (15) fixedly connected to the side wall of the fixed mold (1) and with the inner facade fitted with the roller (11); The upper surface of the movable die base (3) is fixedly connected with a straight top block body (21) that penetrates the forming die (2) and extends to the inner side of the forming cavity (20).

2. The straight ejector block hook demoulding mechanism of an IMG mold for an instrument panel molding according to claim 1, characterized in that: A mold cavity (7) is provided through the module (6), and the mold cavity (7) is electrically connected to the flow channel (5) and the molding cavity (20) respectively.

3. The straight ejector block hook demoulding mechanism of an IMG mold for an instrument panel molding according to claim 1, characterized in that: One end of the hard spring column (13) is connected to the inner end wall of the assembly cavity (12), and the other end of the hard spring column (13) is connected to the draw hook body (10).

4. The straight ejector block hook demoulding mechanism of an IMG mold for an instrument panel molding according to claim 1, characterized in that: The inner vertical surface of the guide frame (15) is provided with a guide slope, and the guide slope is in contact with the roller (11).

5. The straight ejector block hook demoulding mechanism of an IMG mold for an instrument panel molding according to claim 1, characterized in that: A first guide column (16) is symmetrically fixedly connected to the lower surface of the fixed mold (1); The module (6) is provided with a first guide hole (17) which is connected to the first guide column (16).

6. The straight ejector block hook demoulding mechanism of an IMG mold for an instrument panel molding according to claim 1, characterized in that: A second guide column (18) is symmetrically fixedly connected to the upper surface of the movable mold base (3); The forming die (2) is provided with a second guide hole (19) which is connected to the second guide column (18).

7. The straight ejector block hook demoulding mechanism of an IMG mold for an instrument panel molding according to claim 1, characterized in that: The initial position of the top end of the straight top block body (21) is flush with the inner wall of the molding cavity (20).

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