Automatic demolding auxiliary device for BMC injection molding product

Abstract

The utility model discloses a BMC injection molding product automatic demolding auxiliary device which comprises a mold A, a mold B is installed on one side of the mold A, a mold C is installed on the other side of the mold A, a plurality of receding grooves are formed in the side, close to the mold B, of the mold A, and the inner walls of the receding grooves are all connected with molding flitch plates in a sliding mode. And injection molding parts are arranged between the plurality of shaping flitches and the inner wall of the mold A. Before a plurality of ejector pins are ejected out, the gear motor is started, so that the convex shaft is stressed in the arc-shaped hole, the connecting plate pulls the shaping flitch plate to slide in the yielding groove, the convex shaft is stressed, the connecting plate pulls the shaping flitch plate to slide away from an injection molding part in the yielding groove, and the contact area between the injection molding part and the inner wall of a mold A is reduced; the automatic demolding device has the advantages that the situation that the plastic part is damaged when the ejector pin ejects the plastic part due to the fact that the adhesive force between the plastic part and the interior of the mold is large is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mould production technical field especially relates to a BMC injection product automatic demoulding auxiliary device. BACKGROUND

[0002] Injection product demoulding refers to the process that the plastic product after forming is taken out from the mould in the injection molding process. Whether the demoulding is successful or not directly influences the quality and production efficiency of the product.

[0003] When injection molding production is carried out, the plastic part after injection molding needs to be ejected with a ejector pin, but some products are directly ejected with the ejector pin under the condition that the plastic part and the inner wall of the mould are adhered with great force, which can easily cause the plastic part to be damaged, and therefore a BMC injection product automatic demoulding auxiliary device is needed to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings in the prior art and provides a BMC injection product automatic demoulding auxiliary device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A BMC injection product automatic demoulding auxiliary device, including A mould, the side of A mould is installed with B mould, the other side of A mould is installed with C mould, the side of A mould close to B mould is equipped with a plurality of retreat grooves, the inner wall of a plurality of retreat grooves is connected with the plastic shape pasting board that slides, a plurality of plastic shape pasting boards and the inner wall between A mould are provided with injection part, the surface of A mould is installed with auxiliary demoulding mechanism.

[0007] Preferably, the auxiliary demoulding mechanism includes a reduction motor fixedly connected to the surface of the A mold, and the output end of the reduction motor penetrates the inner wall of the retreat groove and is fixedly connected with a first bevel gear.

[0008] Preferably, the inner wall of one of the retreat grooves is fixedly connected with a fixed plate, the inner wall of the fixed plate is rotatably connected with a drive shaft, one end of the drive shaft is fixedly connected with a second bevel gear, and the first bevel gear is engaged with the second bevel gear.

[0009] Preferably, the end of the drive shaft away from the second bevel gear is fixedly connected with a spur gear, the inner wall of the A mold is rotatably connected with a ring plate, the surface of the ring plate is fixedly connected with a plurality of teeth, and the spur gear is engaged with the plurality of teeth.

[0010] Preferably, the surface of each of the plurality of plastic shape pasting boards is fixedly connected with a connecting plate, the surface of the connecting plate is fixedly connected with a convex shaft, the surface of the ring plate is provided with a plurality of arc-shaped holes, the convex shaft is installed inside the arc-shaped hole, and the diameter of the convex shaft is consistent with the inner wall width of the arc-shaped hole.

[0011] Preferably, the surface of the C mold is equipped with multiple spring telescopic rods, one end of each spring telescopic rod is fixedly connected to the same waste plate, and the side of the waste plate near the A mold is fixedly connected to multiple ejector pins, one end of each ejector pin extending to the inner wall of the A mold.

[0012] The beneficial effects of this utility model are as follows:

[0013] Before multiple ejector pins eject, the reduction motor is activated, causing the cam shaft to be stressed within the arc-shaped hole. This, in turn, pulls the plastic molding plate through the connecting plate, causing it to slide away from the injection molded part. This reduces the contact area between the injection molded part and the inner wall of mold A, making it easier for the ejector pins to eject the injection molded part that is stuck inside mold A, thus achieving automatic demolding. The advantage of this is that it avoids the large adhesion between the injection molded part and the mold, which could cause damage when the ejector pins eject the plastic part. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an automatic demolding auxiliary device for BMC injection molded products proposed in this utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of the relief groove in an automatic demolding auxiliary device for BMC injection molded products proposed in this utility model.

[0016] Figure 3 This is a cross-sectional view of mold A in an automatic demolding auxiliary device for BMC injection molded products proposed in this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the B mold in an automatic demolding auxiliary device for BMC injection molded products proposed in this utility model.

[0018] In the diagram: 1. Mold A; 2. Mold B; 3. Gear motor; 4. Recessed groove; 5. Molding plate; 6. First bevel gear; 7. Fixing plate; 8. Drive shaft; 9. Second bevel gear; 10. Spur gear; 11. Ring plate; 12. Connecting plate; 13. Tooth; 14. Protruding shaft; 15. Arc hole; 16. Injection part; 17. Spring telescopic rod; 18. Waste plate; 19. Ejector pin; 20. Mold C. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figures 1-4An automatic demolding auxiliary device for BMC injection molded products includes an A mold 1, a B mold 2 installed on one side of the A mold 1, and a C mold 20 installed on the other side of the A mold 1. A plurality of relief grooves 4 are provided on the side of the A mold 1 near the B mold 2. A molding plate 5 is slidably connected to the inner wall of the plurality of relief grooves 4. An injection molded part 16 is provided between the plurality of molding plates 5 and the inner wall of the A mold 1. An auxiliary demolding mechanism is installed on the surface of the A mold 1.

[0021] By setting multiple relief grooves 4, space is provided for the molding plate 5 to slide and avoid. By setting an auxiliary demolding mechanism, the adhesion between the inside of mold A1 and the surface of injection molded part 16 is reduced before ejection, thereby assisting it to be ejected better.

[0022] In this utility model, the auxiliary demolding mechanism includes a reduction motor 3 fixedly connected to the surface of mold A 1. The output end of the reduction motor 3 passes through the inner wall of the relief groove 4 and is fixedly connected to a first bevel gear 6.

[0023] By setting up a speed reduction motor 3, its output end drives the first bevel gear 6 to rotate.

[0024] In this utility model, a fixing plate 7 is fixedly connected to the inner wall of one of the relief grooves 4, and a drive shaft 8 is rotatably connected to the inner wall of the fixing plate 7. A second bevel gear 9 is fixedly connected to one end of the drive shaft 8, and the first bevel gear 6 meshes with the second bevel gear 9.

[0025] By setting the fixing plate 7, the rotation of the drive shaft 8 is kept stable, and by setting the second bevel gear 9, the drive shaft 8 is driven to rotate.

[0026] In this utility model, a spur gear 10 is fixedly connected to the end of the drive shaft 8 away from the second bevel gear 9, and a ring plate 11 is rotatably connected to the inner wall of the A mold 1. Multiple teeth 13 are fixedly connected to the surface of the ring plate 11, and the spur gear 10 meshes with the multiple teeth 13.

[0027] By setting a spur gear 10, which cooperates with the teeth 13, the ring plate 11 is driven to rotate and its angle is adjusted.

[0028] In this utility model, a connecting plate 12 is fixedly connected to the surface of multiple shaping plates 5, and a convex shaft 14 is fixedly connected to the surface of the connecting plate 12. Multiple arc-shaped holes 15 are opened on the surface of the ring plate 11, and the convex shaft 14 is installed inside the arc-shaped holes 15. The diameter of the convex shaft 14 is the same as the width of the inner wall of the arc-shaped hole 15.

[0029] By setting the connecting plate 12, the convex shaft 14 is installed. By setting the arc-shaped hole 15, the ring plate 11 rotates through the arc-shaped hole 15, causing the convex shaft 14 to be subjected to force, and then the connecting plate 12 pulls the shaping plate 5 to change its position.

[0030] In this utility model, multiple spring telescopic rods 17 are installed on the surface of C mold 20. One end of the multiple spring telescopic rods 17 is fixedly connected to the same waste plate 18. Multiple ejector pins 19 are fixedly connected to the side of the waste plate 18 near A mold 1. One end of the multiple ejector pins 19 extends to the inner wall of A mold 1.

[0031] By setting multiple spring telescopic rods 17, the waste plate 18 is reset. By setting the waste plate 18, the position of multiple ejector pins 19 is changed. By setting the ejector pins 19, the injection molded part 16 is ejected for material discharge.

[0032] Working principle: When mold B2 separates from mold A1, during demolding, the reduction motor 3 is started. The output end of the reduction motor 3 drives the first bevel gear 6 to rotate. The first bevel gear 6 drives the drive shaft 8 to rotate through the second bevel gear 9. The drive shaft 8 drives the spur gear 10 to rotate. The spur gear 10 drives the ring plate 11 to rotate through multiple teeth 13. The rotation of the ring plate 11 changes the position of multiple arc holes 15, so that the convex shaft 14 is subjected to force in the arc hole 15. Then, through the connecting plate 12, the molding plate 5 is pulled to slide in the relief groove 4, so that the injection molded part 16 reduces the contact area with the inner wall of mold A1. At this time, the waste plate 18 drives multiple ejector pins 19 to move under the action of the external force push rod. The multiple ejector pins 19 push out the injection molded part 16 that is stuck in mold A1, realizing the effect of automatic demolding.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic demolding auxiliary device for BMC injection molded products, comprising mold A (1), characterized in that, A mold (2) is installed on one side of mold A (1), and mold C (20) is installed on the other side of mold A (1). A plurality of relief grooves (4) are provided on the side of mold A (1) near mold B (2). A molding plate (5) is slidably connected to the inner wall of the plurality of relief grooves (4). An injection molded part (16) is provided between the plurality of molding plates (5) and the inner wall of mold A (1). An auxiliary demolding mechanism is installed on the surface of mold A (1).

2. The automatic demolding auxiliary device for BMC injection molded products according to claim 1, characterized in that, The auxiliary demolding mechanism includes a speed reduction motor (3) fixedly connected to the surface of mold A (1). The output end of the speed reduction motor (3) passes through the inner wall of the relief groove (4) and is fixedly connected to a first bevel gear (6).

3. The automatic demolding auxiliary device for BMC injection molded products according to claim 2, characterized in that, One of the recessed grooves (4) has a fixed plate (7) fixedly connected to its inner wall. The fixed plate (7) has a drive shaft (8) rotatably connected to its inner wall. One end of the drive shaft (8) is fixedly connected to a second bevel gear (9). The first bevel gear (6) meshes with the second bevel gear (9).

4. The automatic demolding auxiliary device for BMC injection molded products according to claim 3, characterized in that, A spur gear (10) is fixedly connected to one end of the drive shaft (8) away from the second bevel gear (9). A ring plate (11) is rotatably connected to the inner wall of the A mold (1). Multiple teeth (13) are fixedly connected to the surface of the ring plate (11). The spur gear (10) meshes with the multiple teeth (13).

5. The automatic demolding auxiliary device for BMC injection molded products according to claim 4, characterized in that, A connecting plate (12) is fixedly connected to the surface of each of the multiple shaping plates (5). A convex shaft (14) is fixedly connected to the surface of the connecting plate (12). A plurality of arc-shaped holes (15) are opened on the surface of the ring plate (11). The convex shaft (14) is installed inside the arc-shaped hole (15). The diameter of the convex shaft (14) is consistent with the width of the inner wall of the arc-shaped hole (15).

6. The automatic demolding auxiliary device for BMC injection molded products according to claim 1, characterized in that, Multiple spring telescopic rods (17) are installed on the surface of the C mold (20). One end of each of the multiple spring telescopic rods (17) is fixedly connected to the same waste plate (18). Multiple ejector pins (19) are fixedly connected to the side of the waste plate (18) near the A mold (1). One end of each ejector pin (19) extends to the inner wall of the A mold (1).

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