High-precision double-color injection molding positioning device

Abstract

The high-precision double-color injection molding positioning device comprises a rotating plate, the top end of the rotating plate is fixedly connected with a connecting block, one side of the connecting block is fixedly connected with a connecting rod, the end, away from the connecting block, of the connecting rod is rotationally connected with a rolling wheel, and the interior of the rolling wheel is rotationally connected with a sliding rod; a fixing plate is arranged at the bottom of the rolling wheel, a guide groove is formed in the side, close to the connecting rod, of the fixing plate, and a connecting plate is fixedly connected to the side, close to the rotating plate, of the fixing plate. The rotating plate and the fixed plate are connected through the connecting rod and the roller, the guide groove with the central angle of 180 degrees is formed in one side of the fixed plate, and when the rotating plate drives the first male die and the second male die to rotate, the connecting rod drives the roller to rotate on the surface of the fixed plate, and the sliding rod rotates in the guide groove, so that rotation of the rotating plate is guided; and when the sliding rod rotates to one end of the guide groove, the pressure sensor detects the sliding rod, so that high-precision positioning of the mold is realized.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, specifically a high-precision two-color injection molding positioning device. Background Technology

[0002] The two-color injection molding positioning device is a key piece of equipment for achieving high-precision and high-efficiency two-color injection molding. It is mainly used to ensure that two different colored plastics can be accurately and stably injected into the designated position of the mold during the injection process.

[0003] Two-color injection molding typically uses one male mold and two female molds, switching between them by rotating 180 degrees. However, after prolonged use, due to inertia and gravity, the rotation angle may deviate, thus affecting the quality of the injection-molded product. Utility Model Content

[0004] The purpose of this invention is to provide a high-precision dual-color injection molding positioning device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision dual-color injection molding positioning device, comprising a rotating plate, a connecting block fixedly connected to the top of the rotating plate, a connecting rod fixedly connected to one side of the connecting block, a roller rotatably connected to the end of the connecting rod away from the connecting block, a sliding rod rotatably connected inside the roller, a fixing plate provided at the bottom of the roller, a guide groove provided on the side of the fixing plate near the connecting rod, a connecting plate fixedly connected to the side of the fixing plate near the rotating plate, a positioning rod fixedly connected to the side of the connecting plate away from the fixing plate, and a conical surface provided at the end of the positioning rod away from the connecting plate.

[0006] As a further preferred embodiment of this technical solution, the connecting rod consists of an installation sleeve and an adjusting rod. The sliding rod is located inside the guide groove, and the corresponding angle of the guide groove is 180 degrees. Pressure sensors are provided at both ends of the inner wall of the guide groove. The number of positioning rods is four, and the four positioning rods are located at the four corners of the connecting plate.

[0007] As a further preferred embodiment of this technical solution, a plug plate is fixedly connected to the side of the connecting plate near the positioning rod, a first plug rod is fixedly connected to the side of the connecting plate near the plug plate, a first spring is movably sleeved on the surface of the first plug rod, and a baffle is fixedly connected to the end of the first plug rod away from the connecting plate.

[0008] As a further preferred embodiment of this technical solution, the surface of the positioning rod is provided with a first male mold and a second male mold. The four corners of the first male mold and the second male mold are provided with through holes, the middle of the first male mold and the second male mold are provided with through grooves, and the upper and lower sides of the first male mold and the second male mold are provided with mounting grooves. The inner wall of the mounting groove is fixedly connected to a limit plate, and the inner wall of the mounting groove is fixedly connected to a second spring. The end of the second spring near the limit plate is fixedly connected to a movable block, and the interior of the movable block is provided with an oblique groove. The interior of the first male mold and the second male mold is provided with a second insert rod.

[0009] As a further preferred embodiment of this technical solution, there are two through slots, which are adapted to the plug-in plate. The movable block is located inside the mounting slot and abuts against the limiting plate.

[0010] As a further preferred embodiment of this technical solution, a first female mold and a second female mold are fixedly connected to the side of the rotating plate near the fixed plate. Positioning holes are provided at the four corners of the first female mold and the second female mold. Protective sleeves are provided inside the positioning holes. A first insertion hole and a second insertion hole are provided in the middle of the first female mold and the second female mold. A slot is provided on the side of the first female mold and the second female mold near the connecting rod.

[0011] As a further preferred embodiment of this technical solution, the positioning hole and the positioning rod are adapted to each other, the protective sleeve is made of rubber, the first insertion hole and the second insertion hole correspond to the first insertion rod and the second insertion rod respectively, and the slot and the plug-in plate are adapted to each other.

[0012] This utility model provides a high-precision dual-color injection molding positioning device, which has the following beneficial effects:

[0013] (1) This utility model connects the rotating plate and the fixed plate by using a connecting rod and a roller, and sets a guide groove with a central angle of 180 degrees on one side of the fixed plate. When the rotating plate drives the first male mold and the second male mold to rotate, the connecting rod drives the roller to rotate on the surface of the fixed plate, and the sliding rod rotates inside the guide groove, thereby guiding the rotation of the rotating plate. When the sliding rod rotates to one end of the guide groove, the pressure sensor detects the sliding rod, thereby achieving high-precision positioning of the mold.

[0014] (2) In this utility model, when the first female mold and the second female mold approach the first male mold and the second male mold, the positioning rod is inserted into the positioning hole. Since one end of the positioning rod is provided with a conical surface, it is convenient for the positioning rod and the positioning hole to correspond. Furthermore, a protective sleeve is provided on one side of the positioning hole, which can reduce friction when the positioning rod is inserted into the positioning hole and extend the service life of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the unfolded structure of the connecting rod and roller of this utility model;

[0017] Figure 3 This is a schematic diagram of the first and second male molds of this utility model;

[0018] Figure 4 This is a schematic diagram of the first and second insert rods of this utility model;

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of the first mold of this utility model;

[0020] Figure 6 This is a schematic diagram of the protective sleeve and positioning hole structure of this utility model.

[0021] In the diagram: 1. Rotating plate; 2. Connecting block; 3. Connecting rod; 4. Roller; 5. Slide rod; 6. Fixing plate; 7. Guide groove; 8. Connecting plate; 9. Positioning rod; 10. Conical surface; 11. Insertion plate; 12. First insertion rod; 13. First spring; 14. Baffle; 15. First male mold; 16. Second male mold; 17. Through hole; 18. Through groove; 19. Mounting groove; 20. Limiting plate; 21. Second spring; 22. Movable block; 23. Angled groove; 24. Second insertion rod; 25. First female mold; 26. Second female mold; 27. Positioning hole; 28. Protective sleeve; 29. ​​First insertion hole; 30. Second insertion hole; 31. Slot. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] This utility model provides a technical solution: such as Figures 1 to 6 As shown, in this embodiment, the high-precision dual-color injection molding positioning device includes a rotating plate 1. A connecting block 2 is fixedly connected to the top of the rotating plate 1. A connecting rod 3 is fixedly connected to one side of the connecting block 2. A roller 4 is rotatably connected to the end of the connecting rod 3 away from the connecting block 2. A sliding rod 5 is rotatably connected inside the roller 4. A fixing plate 6 is provided at the bottom of the roller 4. A guide groove 7 is provided on the side of the fixing plate 6 near the connecting rod 3. A connecting plate 8 is fixedly connected to the side of the fixing plate 6 near the rotating plate 1. A positioning rod 9 is fixedly connected to the side of the connecting plate 8 away from the fixing plate 6. A conical surface 10 is provided at the end of the positioning rod 9 away from the connecting plate 8.

[0024] By connecting the rotating plate 1 and the fixed plate 6 with the connecting rod 3 and the roller 4, and by setting a guide groove 7 with a central angle of 180 degrees on one side of the fixed plate 6, when the rotating plate 1 drives the first male mold 15 and the second male mold 16 to rotate, the connecting rod 3 drives the roller 4 to rotate on the surface of the fixed plate 6, and the sliding rod 5 rotates inside the guide groove 7, thereby guiding and limiting the rotation of the rotating plate 1. When the sliding rod 5 rotates to one end of the guide groove 7, the pressure sensor detects the sliding rod 5 and stops the motor, thereby achieving precise control of the angle of the rotating plate 1.

[0025] The connecting rod 3 consists of an installation sleeve and an adjusting rod. The sliding rod 5 is located inside the guide groove 7. The corresponding angle of the guide groove 7 is 180 degrees. Pressure sensors are installed at both ends of the inner wall of the guide groove 7. There are four positioning rods 9, which are located at the four corners of the connecting plate 8.

[0026] A plug plate 11 is fixedly connected to the side of the connecting plate 8 near the positioning rod 9. A first plug rod 12 is fixedly connected to the side of the connecting plate 8 near the plug plate 11. A first spring 13 is movably sleeved on the surface of the first plug rod 12. A baffle 14 is fixedly connected to the end of the first plug rod 12 away from the connecting plate 8.

[0027] The surface of the positioning rod 9 is provided with a first male mold 15 and a second male mold 16. The four corners of the first male mold 15 and the second male mold 16 are provided with through holes 17. The middle of the first male mold 15 and the second male mold 16 is provided with through grooves 18. The upper and lower sides of the first male mold 15 and the second male mold 16 are provided with mounting grooves 19. The inner wall of the mounting groove 19 is fixedly connected to a limit plate 20. The inner wall of the mounting groove 19 is fixedly connected to a second spring 21. The end of the second spring 21 near the limit plate 20 is fixedly connected to a movable block 22. The inside of the movable block 22 is provided with an inclined groove 23. The inside of the first male mold 15 and the second male mold 16 is provided with a second insert rod 24.

[0028] As the first female mold 25 and the second female mold 26 approach the first male mold 15 and the second male mold 16, the positioning rod 9 and the first insert rod 12 slide inside the first male mold 15 and the second male mold 16, the first spring 13 is compressed and contracted, the insert plate 11 moves into the through groove 18 and inserts into the inclined groove 23, and the movable block 22 slides inside the mounting groove 19 through the cooperation of the insert plate 11 and the inclined groove 23, the second spring 21 is compressed and contracted, and the deformation capacity of the first spring 13 and the second spring 21 provides a certain displacement space for the first male mold 15 and the second male mold 16, thereby avoiding excessive mechanical pressure during the mold closing process and causing mold damage.

[0029] There are two through slots 18, which are adapted to the plug-in plate 11. The movable block 22 is located inside the mounting slot 19 and abuts against the limiting plate 20.

[0030] The first female mold 25 and the second female mold 26 are fixedly connected to the side of the rotating plate 1 near the fixed plate 6. The four corners of the first female mold 25 and the second female mold 26 are provided with positioning holes 27. The inside of the positioning holes 27 is provided with protective sleeves 28. The middle of the first female mold 25 and the second female mold 26 is provided with a first insertion hole 29 and a second insertion hole 30. The side of the first female mold 25 and the second female mold 26 near the connecting rod 3 is provided with a slot 31.

[0031] As the first female mold 25 and the second female mold 26 approach the first male mold 15 and the second male mold 16, the positioning rod 9 is inserted into the positioning hole 27. Since one end of the positioning rod 9 is provided with a conical surface 10, it is convenient for the positioning rod 9 and the positioning hole 27 to correspond. Furthermore, a protective sleeve 28 is provided on one side of the positioning hole 27, which reduces friction when the positioning rod 9 is inserted into the positioning hole 27 and extends the service life of the device.

[0032] The positioning hole 27 is compatible with the positioning rod 9, the protective sleeve 28 is made of rubber, the first insertion hole 29 and the second insertion hole 30 correspond to the first insertion rod 12 and the second insertion rod 24 respectively, and the slot 31 is compatible with the plug-in plate 11.

[0033] This utility model provides a high-precision dual-color injection molding positioning device, the specific working principle of which is as follows:

[0034] In use, the cylinder assembly pushes the rotating plate 1 closer to the fixed plate 6, and the positioning rod 9 is inserted into the positioning hole 27, thereby guiding the movement of the first female mold 25 and the second female mold 26. The first insert rod 12 and the second insert rod 24 correspond to the first insert hole 29 and the second insert hole 30, respectively. The first female mold 25 and the second female mold 26 are in contact with the first male mold 15 and the second male mold 16. The cylinder assembly continues to work, causing the positioning rod 9 and the first insert rod 12 to slide inside the first male mold 15 and the second male mold 16. The first spring 13 is compressed and contracted, and the insertion plate 11 moves into the through groove 18 and is inserted into the inclined groove 23. Through the cooperation of the insertion plate 11 and the inclined groove 23, the movable block 22 slides inside the mounting groove 19. The second spring 21 is... The compression and shrinkage process causes the insertion plate 11 to correspond to the slot 31 and gradually move into its interior, thereby fixing the positions of the first female mold 25 and the second female mold 26 with the first male mold 15 and the second male mold 16. After the first plastic part is formed, the rotating plate 1 is moved away from the fixed plate 6, and the positioning rod 9 disengages from the positioning hole 27. The rotating plate 1 is driven to rotate by the motor, and the connecting rod 3 drives the roller 4 to slide and rotate on the surface of the fixed plate 6. The sliding rod 5 rotates inside the guide groove 7, thereby guiding and limiting the rotation of the rotating plate 1. When the rotating plate 1 rotates 180 degrees, the sliding rod 5 contacts the pressure sensor inside the guide groove 7. The pressure sensor detects the sliding rod 5 and stops the motor, thereby precisely controlling the angle of the rotating plate 1. The mold is then closed again to fill the second plastic part.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision dual-color injection molding positioning device, comprising a rotating plate (1), characterized in that: A connecting block (2) is fixedly connected to the top of the rotating plate (1), a connecting rod (3) is fixedly connected to one side of the connecting block (2), a roller (4) is rotatably connected to the end of the connecting rod (3) away from the connecting block (2), a sliding rod (5) is rotatably connected inside the roller (4), a fixing plate (6) is provided at the bottom of the roller (4), a guide groove (7) is provided on the side of the fixing plate (6) near the connecting rod (3), a connecting plate (8) is fixedly connected to the side of the fixing plate (6) near the rotating plate (1), a positioning rod (9) is fixedly connected to the side of the connecting plate (8) away from the fixing plate (6), and a conical surface (10) is provided at the end of the positioning rod (9) away from the connecting plate (8).

2. The high-precision dual-color injection molding positioning device according to claim 1, characterized in that: The connecting rod (3) consists of an installation sleeve and an adjusting rod. The sliding rod (5) is located inside the guide groove (7). The corresponding angle of the guide groove (7) is 180 degrees. Pressure sensors are provided at both ends of the inner wall of the guide groove (7). There are four positioning rods (9). The four positioning rods (9) are located at the four corners of the connecting plate (8).

3. The high-precision dual-color injection molding positioning device according to claim 1, characterized in that: A plug plate (11) is fixedly connected to the side of the connecting plate (8) near the positioning rod (9). A first plug rod (12) is fixedly connected to the side of the connecting plate (8) near the plug plate (11). A first spring (13) is movably sleeved on the surface of the first plug rod (12). A baffle (14) is fixedly connected to the end of the first plug rod (12) away from the connecting plate (8).

4. The high-precision dual-color injection molding positioning device according to claim 1, characterized in that: The surface of the positioning rod (9) is provided with a first male mold (15) and a second male mold (16). The four corners of the first male mold (15) and the second male mold (16) are provided with through holes (17). The middle part of the first male mold (15) and the second male mold (16) is provided with through grooves (18). The upper and lower sides of the first male mold (15) and the second male mold (16) are provided with mounting grooves (19). The inner wall of the mounting groove (19) is fixedly connected to a limiting plate (20). The inner wall of the mounting groove (19) is fixedly connected to a second spring (21). The end of the second spring (21) near the limiting plate (20) is fixedly connected to a movable block (22). The inside of the movable block (22) is provided with an oblique groove (23). The inside of the first male mold (15) and the second male mold (16) is provided with a second insert rod (24).

5. The high-precision dual-color injection molding positioning device according to claim 4, characterized in that: There are two through slots (18), and the two through slots (18) are adapted to the plug-in plate (11). The movable block (22) is located inside the mounting slot (19), and the movable block (22) abuts against the limiting plate (20).

6. The high-precision dual-color injection molding positioning device according to claim 1, characterized in that: The rotating plate (1) is fixedly connected to the first female mold (25) and the second female mold (26) on the side near the fixed plate (6). The first female mold (25) and the second female mold (26) are provided with positioning holes (27) at the four corners. The positioning holes (27) are provided with protective sleeves (28). The first female mold (25) and the second female mold (26) are provided with first insertion holes (29) and second insertion holes (30) in the middle. The first female mold (25) and the second female mold (26) are provided with slots (31) on the side near the connecting rod (3).

7. The high-precision dual-color injection molding positioning device according to claim 6, characterized in that: The positioning hole (27) and the positioning rod (9) are adapted to each other. The protective sleeve (28) is made of rubber. The first insertion hole (29) and the second insertion hole (30) correspond to the first insertion rod (12) and the second insertion rod (24) respectively. The slot (31) and the plug-in plate (11) are adapted to each other.

Images