CN116811139A - Injection molding die for automobile trunk cover - Google Patents

Abstract

The invention provides an injection molding mold for a trunk lid of a car and relates to the technical field of injection molds. The automobile trunk lid injection molding mold includes a base. The top of the base and the four corners are fixedly connected with support columns. The top of the support column is fixedly connected with a top plate. The top of the top plate is fixedly connected with a hydraulic cylinder. , an upper mold is fixedly connected to the piston rod of the hydraulic cylinder, and the upper mold is located below the top plate. An upper molding cavity is provided inside the upper mold, and a lower mold is fixedly connected to the top and middle position of the base. . By arranging a rotating motor, a rotating shaft, a cam, a side plate, a knocking rod, a knocking block, a push plate and a return spring, it is convenient to knock the upper mold and the lower mold after injection molding, so that the finished car trunk lid can be aligned with the upper mold and the lower mold. The mold is separated to avoid damage to the car trunk lid during the demoulding process and production waste.

Description

A car trunk lid injection molding mold

Technical field

The invention relates to the technical field of injection molds, specifically an injection molding mold for a trunk lid of an automobile.

Background technique

Injection molding is also called injection molding. It is an injection and molding method. At a certain temperature, the completely molten plastic material is stirred by a screw and injected into the mold cavity with high pressure. After cooling and solidification, the molded product is obtained. Methods. At present, automobile trunk lids are mainly produced using injection molds.

Currently, when injection molds are used to produce car trunk lids, a demoulding structure is set on the mold. However, during the demoulding process, excessive extrusion force can easily crush the finished car trunk lid adsorbed on the mold. This in turn leads to production waste.

Contents of the invention

(1) Technical problems solved

In view of the shortcomings of the existing technology, the present invention provides an automobile trunk lid injection molding mold, which solves the problem that the existing demoulding mechanism can easily remove the finished product adsorbed on the mold due to excessive extrusion force during the demoulding process. The trunk lid of the car is squeezed, which leads to production waste.

(2) Technical solutions

In order to achieve the above objects, the present invention is realized through the following technical solutions: an automobile trunk lid injection molding mold, including a base, the top of the base and the positions located at the four corners are fixedly connected with support pillars, the top of the support pillar A top plate is fixedly connected, a hydraulic cylinder is fixedly connected to the top of the top plate, an upper mold is fixedly connected to the piston rod of the hydraulic cylinder, and the upper mold is located below the top plate, and an upper molding cavity is provided inside the upper mold. A lower mold is fixedly connected to the top and middle position of the base, and a lower molding cavity is provided inside the lower mold;

The bottom of the lower molding cavity is provided with a groove, the inside of the groove is provided with an extrusion plate, the bottom of the groove is provided with a through hole, the bottom of the through hole is provided with a sliding cavity, the extrusion plate The bottom of the board is fixedly connected with a connecting column, and the connecting column is slidingly connected inside the through hole. The bottom end of the connecting column is fixedly connected with a supporting plate, and the supporting plate is slidingly connected inside the sliding cavity. The top of the supporting plate The left and right sides are fixedly connected with vertical rods, the top of the vertical rod is fixedly connected with a supporting block, the left and right side walls of the upper mold are fixedly connected with supporting plates, and the supporting plates are slidingly connected to the vertical rods;

A side plate is fixedly connected to the side wall of the support column, and a knocking rod is slidingly connected to the inside of the side plate. An end of the knocking rod close to the upper mold is fixedly connected to a knocking block, and an end of the knocking rod away from the upper mold is fixedly connected. A push plate is fixedly connected, and a return spring is set on the peripheral surface of the knocking rod;

A sliding cavity is provided inside the base. A biaxial motor is fixedly connected to the middle position of the sliding cavity. A screw is fixedly connected to the output shaft of the biaxial motor. A mounting screw is threadedly connected to the circumferential surface of the screw. seat, the front and rear side walls of the sliding cavity are provided with limiting grooves, the interior of the limiting groove is slidingly connected to the limiting block, and the limiting block is fixedly connected to the mounting base, and the top of the mounting base is fixedly connected to a rotating A motor, a rotating shaft is fixedly connected to the output shaft of the rotating motor, a cam is fixedly connected to the circumferential surface of the rotating shaft, and the cam is arranged corresponding to the push plate.

Preferably, the top of the upper mold is provided with an injection pipe and an exhaust hole, and the injection pipe is located on the right side of the exhaust hole, and the injection pipe is slidingly connected to the top plate.

Preferably, positioning blocks are provided at the bottom and four corners of the upper mold, and positioning holes are provided at the top and four corners of the lower mold, and the positioning blocks are used in conjunction with the positioning holes.

Preferably, the number of the side plates is four, and two of them are located symmetrically on the left and right sides of the upper mold and the lower mold.

Preferably, each side plate is provided with two knocking rods, two knocking blocks, two return springs and a push plate.

Preferably, the number of cams is the same as the number of side plates, and the cams are arranged corresponding to the push plates.

Preferably, there are two mounting seats, and they are symmetrically arranged on the left and right sides of the dual-axis motor.

Preferably, the number of the limiting grooves and limiting blocks is four, and a set of two is provided corresponding to the mounting base.

(3) Beneficial effects

The invention provides an injection molding mold for a trunk lid of an automobile. It has the following beneficial effects:

1. The present invention, by arranging a rotating motor, a rotating shaft, a cam, a side plate, a knocking rod, a knocking block, a push plate and a return spring, it is convenient to knock the upper mold and the lower mold after injection molding, so that the finished automobile trunk lid can be It is separated from the upper mold and the lower mold to avoid damage to the car trunk lid during the demoulding process and production waste.

2. The present invention facilitates the adjustment of the position of the knocking block by arranging the sliding cavity, biaxial motor, screw, mounting seat, limit groove and limit block, and avoids the knocking block from hindering the separation and closing of the upper mold and the lower mold.

3. In the present invention, by arranging grooves, extrusion plates, through holes, sliding cavities, connecting columns, support plates, vertical rods, supporting blocks and supporting plates, when the upper mold moves upward, the extruding plate is driven to move , thereby achieving automatic demoulding.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of an automobile trunk lid injection molding mold proposed by the present invention;

Figure 2 is a front cross-sectional view of an automobile trunk lid injection molding mold proposed by the present invention;

Figure 3 is a side cross-sectional view of an automobile trunk lid injection molding mold proposed by the present invention;

Figure 4 is a schematic diagram of the structure A in Figure 2;

Figure 5 is a schematic diagram of the structure B in Figure 1;

Figure 6 is a partial structural cross-sectional view of an automobile trunk lid injection molding mold proposed by the present invention;

Figure 7 is a schematic diagram of the C structure in Figure 6.

Among them, 1. Base; 2. Support column; 3. Top plate; 4. Hydraulic cylinder; 5. Upper mold; 6. Upper molding cavity; 7. Lower mold; 8. Lower molding cavity; 9. Groove; 10. Extrusion Pressure plate; 11. Through hole; 12. Sliding cavity; 13. Connecting column; 14. Support plate; 15. Vertical rod; 16. Support block; 17. Support plate; 18. Sliding cavity; 19. Biaxial motor; 20 , screw; 21. mounting base; 22. limit groove; 23. limit block; 24. rotating motor; 25. rotating shaft; 26. cam; 27. side plate; 28. knocking rod; 29. knocking block; 30. Push plate; 31. Return spring; 32. Injection pipe; 33. Exhaust hole; 34. Positioning hole; 35. Positioning block.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Example:

As shown in Figures 1-7, an embodiment of the present invention provides an automobile trunk lid injection molding mold, which includes a base 1. The top of the base 1 and the positions at the four corners are fixedly connected with support columns 2. The tops of the support columns 2 are fixed. A top plate 3 is connected, and a hydraulic cylinder 4 is fixedly connected to the top of the top plate 3. The hydraulic cylinder 4 is controlled by an external hydraulic system (not shown in the figure). The upper mold 5 is fixedly connected to the piston rod of the hydraulic cylinder 4, and the upper mold 5 is located below the top plate 3, an upper molding cavity 6 is provided inside the upper mold 5, a lower mold 7 is fixedly connected to the top of the base 1 and is located in the middle, and a lower molding cavity 8 is provided inside the lower mold 7;

The bottom of the lower molding cavity 8 is provided with a groove 9, and the interior of the groove 9 is provided with an extrusion plate 10. The extrusion plate 10 is used in conjunction with the groove 9. The bottom of the groove 9 is provided with a through hole 11, and the through hole 11 is A sliding cavity 12 is provided at the bottom. The bottom of the extrusion plate 10 is fixedly connected to a connecting column 13, and the connecting column 13 is slidingly connected inside the through hole 11. The bottom end of the connecting column 13 is fixedly connected to a supporting plate 14, and the supporting plate 14 Slidingly connected inside the sliding cavity 12, the top and left sides of the support plate 14 are fixedly connected with vertical rods 15, the tops of the vertical rods 15 are fixedly connected with brackets 16, and the left and right side walls of the upper mold 5 are fixedly connected with brackets. The supporting plate 17 is slidably connected to the vertical rod 15. The setting of the supporting plate 17 facilitates the upper mold 5 to drive the supporting block 16 upward during the upward movement, thereby controlling the vertical rod 15, the supporting plate 14 and the connecting column. 13 and the extrusion plate 10 move upward to realize automatic demoulding;

A side plate 27 is fixedly connected to the side wall of the support column 2. The side plate 27 is mainly used for positioning the knocking rod 28. The inside of the side plate 27 is slidingly connected with a knocking rod 28. The knocking rod 28 is close to one end of the upper mold 5. A knocking block 29 is fixedly connected, and an end of the knocking rod 28 away from the upper mold 5 is fixedly connected with a push plate 30. A return spring 31 is set on the circumferential surface of the knocking rod 28. The return spring 31 is always in a compressed state, and the return spring 31 cooperates with the cam. 26 controls the knocking block 29 to move left and right, and when the dual-axis motor 19 controls the mounting base 21 to move to the side away from the dual-axis motor 19, the rotating motor 24, the rotating shaft 25 and the cam 26 follow to move together. At this time, the return spring 31 pushes against the push plate. 30 to squeeze, thereby controlling the knocking block 29 to move to the side away from the upper mold 5 and the lower mold 7;

The base 1 is provided with a sliding cavity 18 inside, and a biaxial motor 19 is fixedly connected to the middle position of the sliding cavity 18. The biaxial motor 19 is mainly used to control the rotation of the screw 20, thereby controlling the movement of the mounting base 21, and adjusting the position of the knocking block 29. Adjust to prevent the knocking block 29 from hindering the separation and closing of the upper mold 5 and the lower mold 7. The output shaft of the biaxial motor 19 is fixedly connected with a screw rod 20. The circumferential surface of the screw rod 20 is threadedly connected with a mounting seat 21 and a sliding cavity 18. Limiting grooves 22 are provided on the front and rear side walls of the slider. The setting of the limiting groove 22 and the limiting block 23 mainly limits the position of the mounting base 21 to prevent the mounting base 21 from falling off from the inside of the sliding cavity 18. The limiting groove 22 The internal sliding connection of the limit block 23, and the limit block 23 is fixedly connected to the mounting base 21. The top of the mounting base 21 is fixedly connected with a rotating motor 24. The rotating motor 24 is mainly used to control the rotating shaft 25 to drive the cam 26 to rotate, and cooperates with the reset The spring 31 controls the knocking block 29 to knock the upper mold 5 and the lower mold 7 after the injection molding is completed, so that the trunk lid of the car is separated from the upper mold 5 and the lower mold 7. The output shaft of the rotating motor 24 is fixedly connected with a rotating shaft 25, and the rotating shaft 25 A cam 26 is fixedly connected to the circumferential surface, and the cam 26 and the push plate 30 are arranged correspondingly.

An injection pipe 32 and an exhaust hole 33 are provided on the top of the upper mold 5 , and the injection pipe 32 is located on the right side of the exhaust hole 33 . The injection pipe 32 is slidingly connected to the top plate 3 .

Positioning blocks 35 are provided at the bottom of the upper mold 5 and at the four corners. The positioning blocks 35 and the positioning holes 34 are mainly used to limit the positions of the upper mold 5 and the lower mold 7 to prevent the upper mold 5 and the lower mold 7 from being moved. Position deviation occurs when being struck. Positioning holes 34 are provided on the top of the lower mold 7 and at the four corners, and the positioning blocks 35 are used in conjunction with the positioning holes 34.

The number of side plates 27 is four, and two of them are located symmetrically on the left and right sides of the upper mold 5 and the lower mold 7. The two side plates 27 on the same side are arranged up and down, and are connected with the upper mold 5 and the lower mold 7. 7 correspondingly arranged, each side plate 27 is provided with two knocking rods 28, two knocking blocks 29, two return springs 31 and a push plate 30, the number of cams 26 is the same as the number of the side plates 27, and the cam 26 is set correspondingly to the push plate 30.

There are two mounting seats 21 , and they are symmetrically arranged on the left and right sides of the dual-axis motor 19 . There are four limiting grooves 22 and limiting blocks 23 , and two are in a group with the mounting base 21 Corresponding settings.

Both the dual-axis motor 19 and the rotating motor 24 in the present invention are controlled by an external controller (not shown in the figure).

Working principle: When in use, the biaxial motor 19 is first used to control the knocking block 29 to move away from the upper mold 5 or the lower mold 7, and then the hydraulic cylinder 4 controls the upper mold 5 to move downward, so that the upper mold 5 and the lower mold 7 are tightly fitted together. , at the same time, the positioning block 35 is inserted into the inside of the positioning hole 34, and the slurry is injected into the upper molding cavity 6 and the lower molding cavity 8 through the injection pipe 32. After the injection is completed, the car trunk lid slowly cools and solidifies. When the car trunk After the cover is completely solidified, the double-axis motor 19 controls the knocking block 29 to approach the upper mold 5 or the lower mold 7, and then starts the rotating motor 24 to control the rotation of the cam 26, and cooperates with the return spring 31 to control the knocking block 29 to move left and right, so that the knocking block 29 is aligned. The mold 5 and the lower mold 7 are struck to separate the injection-molded automobile trunk lid from the upper mold 5 and the lower mold 7. Then the rotating motor 24 stops working, and the biaxial motor 19 again controls the knocking block 29 to move away from the upper mold 5 or the lower mold 7. , and finally the hydraulic cylinder 4 controls the upper mold 5 to move upward. During the upward movement, automatic demoulding is realized through the supporting plate 17, the supporting block 16, the vertical rod 15, the supporting plate 14, the connecting column 13 and the extrusion plate 10.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, and substitutions can be made to these embodiments without departing from the principles and spirit of the invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (8)

1. A car trunk lid injection molding mold, including a base (1), the top of the base (1) and the four corners are fixedly connected with support columns (2), the top of the support column (2) A top plate (3) is fixedly connected, a hydraulic cylinder (4) is fixedly connected to the top of the top plate (3), an upper mold (5) is fixedly connected to the piston rod of the hydraulic cylinder (4), and the upper mold (5) ) is located below the top plate (3), an upper molding cavity (6) is provided inside the upper mold (5), and a lower mold (7) is fixedly connected to the top and middle position of the base (1), so A lower molding cavity (8) is provided inside the lower mold (7), which is characterized in that: a groove (9) is provided at the bottom of the lower molding cavity (8), and a groove (9) is provided inside the groove (9). Extrusion plate (10), the bottom of the groove (9) is provided with a through hole (11), the bottom of the through hole (11) is provided with a sliding cavity (12), the extrusion plate (10) The bottom is fixedly connected with a connecting column (13), and the connecting column (13) is slidingly connected inside the through hole (11). The bottom end of the connecting column (13) is fixedly connected with a supporting plate (14), and the supporting plate (14) 14) Slidingly connected inside the sliding cavity (12), the top and left sides of the support plate (14) are fixedly connected to vertical rods (15), and the top of the vertical rod (15) is fixedly connected to a supporting block ( 16), the left and right side walls of the upper mold (5) are fixedly connected with supporting plates (17), and the supporting plates (17) are slidingly connected to the vertical rods (15); A side plate (27) is fixedly connected to the side wall of the support column (2), and a knocking rod (28) is slidingly connected to the inside of the side plate (27). The knocking rod (28) is close to the upper mold (5). ) is fixedly connected with a knocking block (29) at one end, and the knocking rod (28) is fixedly connected with a push plate (30) at one end away from the upper mold (5). The knocking rod (28) is covered with a Return spring (31); A sliding cavity (18) is provided inside the base (1). A biaxial motor (19) is fixedly connected to the middle position inside the sliding cavity (18). The output shaft of the biaxial motor (19) is fixed on the A screw rod (20) is connected, and a mounting seat (21) is threadedly connected to the circumferential surface of the screw rod (20). Limiting grooves (22) are provided on the front and rear side walls of the sliding cavity (18). The inside of the slot (22) is slidingly connected to the limiting block (23), and the limiting block (23) is fixedly connected to the mounting base (21). The top of the mounting base (21) is fixedly connected to a rotating motor (24). A rotating shaft (25) is fixedly connected to the output shaft of the rotating motor (24), a cam (26) is fixedly connected to the circumferential surface of the rotating shaft (25), and the cam (26) is arranged corresponding to the push plate (30) . 2. A car trunk lid injection molding mold according to claim 1, characterized in that: the top of the upper mold (5) is provided with an injection pipe (32) and an exhaust hole (33), and the injection molding The feed pipe (32) is located on the right side of the exhaust hole (33), and the feed pipe (32) is slidingly connected to the top plate (3). 3. A car trunk lid injection molding mold according to claim 1, characterized in that: positioning blocks (35) are provided at the bottom of the upper mold (5) and at four corners, and the lower mold Positioning holes (34) are provided on the top of (7) and at the four corners, and the positioning blocks (35) are used in conjunction with the positioning holes (34). 4. A car trunk lid injection molding mold according to claim 1, characterized in that: the number of side plates (27) is set to four, and two of them are located in a group of symmetrically arranged upper molds (5 ), the left and right sides of the lower mold (7). 5. A car trunk lid injection molding mold according to claim 1, characterized in that: each side plate (27) is provided with two knocking rods (28) and two knocking blocks (29). ), two return springs (31) and a push plate (30). 6. A car trunk lid injection molding mold according to claim 1, characterized in that: the number of the cams (26) is the same as the number of the side plates (27), and the cams (26) and the push plates (27) are 30) Corresponding settings. 7. A car trunk lid injection molding mold according to claim 1, characterized in that: there are two mounting seats (21), and they are symmetrically arranged on the left and right sides of the biaxial motor (19). side. 8. A car trunk lid injection molding mold according to claim 1, characterized in that: the number of the limiting grooves (22) and the limiting blocks (23) is four, and two of them are One group is provided correspondingly to the mounting base (21).