Multi-color core transfer mechanism and control method

Abstract

The application belongs to the technical field of plastic injection mold, in particular to a multi-color core rotating mechanism, which comprises a mold core, a B plate is fixedly installed on the outer surface of the mold core, a transmission vertical rod is fixedly penetrated in the mold core, a gear assembly is arranged below the outer surface of the transmission vertical rod, the gear assembly comprises a gear one, the gear one is fixedly installed below the outer surface of the transmission vertical rod, bearings one are fixedly connected to the top and bottom of the gear one, and a plurality of uniformly distributed support rods are fixedly connected to the inner side wall top of the bearings one; the design of the rotating motor, the gear assembly, the bearings one, the bearings two and the bearings three can meet the requirement of rotating only the mold core of the rear mold, change the design of rotating the whole rear mold part of the traditional multi-color mold, ensure the precision and smoothness of the mold core rotation in the injection molding process, and the rotating angle of the rotating motor is one hundred and twenty degrees each time, so the injection molding of the plastic inside the multi-color product is completed each time.

Description

Technical Field

[0001] This invention belongs to the field of plastic injection mold technology, specifically a multi-color core-rotating mechanism and control method. Background Technology

[0002] Plastic injection molds are widely used tools for producing plastic products. Some plastic products in daily life require the use of two or three materials due to the product's appearance or functional needs, i.e., two-color or three-color molds. Two-color molding is a multi-material injection molding technology, typically using two injection molding machines or one injection molding machine with two injection units. It combines two different colors or materials of plastic into a complete part through two injection processes. Three-color molding is an extension of two-color molding; however, it uses three different materials or colors in a single molding process, usually requiring more complex mold design and higher precision control. Therefore, this invention provides a multi-color core-rotating mechanism and control method. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a multi-color core-turning mechanism of the present invention includes a mold core, wherein a B plate is fixedly installed on the outer surface of the mold core; A transmission vertical rod is fixedly inserted through the mold core. A gear assembly is provided below the outer surface of the transmission vertical rod. The gear assembly includes a gear one, which is fixedly installed below the outer surface of the transmission vertical rod. A bearing one is fixedly connected to the top and bottom of the gear one. Multiple evenly distributed support rods are fixedly connected to the top of the inner side wall of the bearing one. A transmission rod tube ring is fixedly connected to the top of the support rod. The transmission rod tube ring is fixedly installed with plate B. A transmission component is provided on the outer surface of the gear one. The outer surface of the mold core is provided with a one-color slider, a two-color slider, and a three-color slider. The one-color slider, the two-color slider, and the three-color slider are all slidably connected to the B plate. The one-color slider corresponds to a one-color product, the two-color slider corresponds to a two-color product, and the three-color slider corresponds to a three-color product. The mold core has three evenly distributed inclined surfaces on its side, which are precisely fitted with plate B.

[0005] Preferably, the transmission assembly includes a gear two meshing with the outer surface of gear one, a bearing two fixedly installed inside gear two, a gear three meshing with the outer surface of gear two, a bearing three fixedly installed inside gear three, a gear four meshing with the outer surface of gear three, a rotating rod fixedly connected to gear four, and a rotating motor fixedly installed at the top of the rotating rod.

[0006] Preferably, a top rod is rotatably mounted inside the transmission vertical rod, and the bottom of the top rod extends to below the bottom of the transmission vertical rod.

[0007] Preferably, gear one and gear two, and gear three and gear four are connected in series.

[0008] Preferably, it also includes a connecting component, which is fixedly installed between gear two and gear three. The connecting component includes a connecting ring one and a connecting ring two disposed on the top of gear two and gear three, respectively. The connecting ring one and the connecting ring two are rotatably installed by a limiting component and gear two and gear three. A connecting block is fixedly connected between the connecting ring one and the connecting ring two. A through groove is provided at the center of the connecting block.

[0009] Preferably, the limiting component includes two limiting grooves respectively opened inside the second gear and the third gear. The upper surfaces of the two limiting grooves extend to the outside of the second gear and the outside of the third gear, respectively. Multiple evenly distributed limiting blocks are rotatably connected inside the limiting grooves. The left limiting block is fixedly connected to the first connecting ring, and the right limiting block is fixedly connected to the second connecting ring.

[0010] Preferably, both the limiting groove and the limiting block are configured in an inverted T-shape, and the bottoms of the first connecting ring and the second connecting ring are respectively fitted to the tops of the second gear and the third gear.

[0011] A control method for a multi-color rotating core mechanism, the method employing the aforementioned multi-color rotating core mechanism, includes the following steps: S1. The rotary motor is powered on and controlled to rotate at an angle of 120 degrees each time. After the rotary motor is working, it drives the rotating rod and gear four to rotate. S2. After gear four rotates, it drives gear three and gear two connected in series with it to rotate through the limit of bearing three and bearing two. Gear four rotates, which drives gear three to rotate, and gear three rotates, which drives gear two to rotate. S3. After gear two rotates, it drives gear one to rotate, and gear one rotates to drive the transmission vertical rod to rotate, which in turn causes the mold core to rotate, thereby controlling the angle of rotation of the mold core to be 120 degrees each time.

[0012] The beneficial effects of this invention are as follows: 1. The multi-color core-rotating mechanism and control method described in this invention, through the design of a rotary motor in conjunction with gear components and bearings one, two, and three, can meet the requirement of rotating only the rear mold core, and changes the traditional design of rotating the entire rear mold part in multi-color molds. This ensures the accuracy and smoothness of the core rotation during injection molding. At the same time, the rotary motor rotates 120 degrees each time, so each rotation completes one injection of plastic into the multi-color product. Finally, one rotation completes the full processing of the product. This not only meets the needs of multi-color mold injection, but also greatly simplifies the mold structure, improves the overall quality and service life of the mold, reduces costs, reduces maintenance, and improves production efficiency.

[0013] 2. The multi-color rotating core mechanism and control method of the present invention connects gears two and three by means of an integrally formed connecting ring one, connecting ring two, and connecting block, which facilitates the simultaneous installation of gears two and three without requiring gears two and three to mesh during installation, thus making the installation operation simpler and more convenient. At the same time, the limiting component does not affect the rotation of gears two and three at the bottom of connecting ring one and connecting ring two, and the groove facilitates the removal and installation of the connecting component and gears two and three. Attached Figure Description

[0014] The invention will now be further described with reference to the accompanying drawings.

[0015] Figure 1 This is a perspective view of the present invention; Figure 2 This is a partial view of the initial state of the mold core of the present invention; Figure 3 This is a partial view of the mold core of the present invention rotated 120 degrees; Figure 4 This is a partial view of the mold core of the present invention rotated 240 degrees; Figure 5 This is a schematic diagram of the B-plate structure of the present invention; Figure 6 This is a perspective view of the connection component of the present invention; Figure 7 This is a partial cross-sectional view of the connection component of the present invention; Figure 8 This is a perspective view of the limiting block of the present invention; Figure 9 This is a flowchart of the control system of the present invention.

[0016] In the diagram: 1. Mold core; 2. Single-color slider; 3. Two-color slider; 4. Three-color slider; 5. Single-color product; 6. Two-color product; 7. Three-color product; 8. Rotary motor; 9. Gear assembly; 91. Gear 1; 92. Gear 2; 93. Gear 3; 94. Gear 4; 10. Bearing 1; 101. Bearing 2; 102. Bearing 3; 11. Transmission rod tube ring; 12. Transmission vertical rod; 13. Top roller; 14. Connecting ring 1; 15. Connecting block; 16. Connecting ring 2; 17. Groove; 18. Limiting groove; 19. Limiting block. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0018] Example 1: As Figures 1 to 5 As shown in the embodiment of the present invention, a multi-color core-changing mechanism includes a mold core 1, and a B plate is fixedly installed on the outer surface of the mold core 1; A transmission vertical rod 12 is fixedly inserted through the mold core 1. A gear assembly 9 is provided below the outer surface of the transmission vertical rod 12. The gear assembly 9 includes a gear 91, which is fixedly installed below the outer surface of the transmission vertical rod 12. Bearings 10 are fixedly connected to the top and bottom of the gear 91. Multiple evenly distributed support rods are fixedly connected to the top of the inner side wall of the upper bearing 10. A transmission rod tube ring 11 is fixedly connected to the top of the support rod. The transmission rod tube ring 11 is fixedly installed with plate B. A transmission component is provided on the outer surface of the gear 91. The outer surface of the mold core 1 is provided with a one-color slider 2, a two-color slider 3, and a three-color slider 4. The one-color slider 2, the two-color slider 3, and the three-color slider 4 are all slidably connected to the B plate. The one-color slider 2 corresponds to a one-color product 5, the two-color slider 3 corresponds to a two-color product 6, and the three-color slider 4 corresponds to a three-color product 7. The mold core 1 has three evenly distributed inclined surfaces on its side, and the inclined surfaces are precisely fitted with plate B. During operation, the transmission vertical rod 12 is connected to the center of the mold core 1 to drive the rotation of the mold core 1. The transmission rod tube ring 11 and bearing 10 are respectively installed on the B plate and the transmission vertical rod 12 to ensure the accuracy required for the normal rotation and movement of the transmission vertical rod 12. Then, the rotating assembly can drive the gear 91 to rotate, and the rotation of the gear 91 drives the transmission vertical rod 12 to rotate, causing the mold core 1 to rotate. Since the bearing 10 is connected to the transmission rod tube ring 11 through the support rod, the support rod and the transmission rod tube ring 11 will not rotate after the gear 91 rotates and drives the transmission vertical rod 12 to rotate, and the B plate will not rotate. The one-color slider 2, the two-color slider 3, and the three-color slider 4 move on the B plate and will not rotate with the rotation of the mold core 1. Therefore, the one-color slider 2, the two-color slider 3, and the three-color slider 4 respectively produce one-color product 5, two-color product 6, and three-color product 7. At the same time, the inclined surface set on the side of the mold core 1 and the precise fit with the B plate can avoid the slight error caused by rotation in order to meet the needs of injection molding.

[0019] The transmission assembly includes a second gear 92 meshing with the outer surface of a first gear 91, a second bearing 101 fixedly installed inside the second gear 92, a third gear 93 meshing with the outer surface of the second gear 92, a third bearing 102 fixedly installed inside the third gear 93, a fourth gear 94 meshing with the outer surface of the third gear 93, and a rotating rod fixedly connected to the fourth gear 94. A rotary motor 8 is fixedly installed at the top of the rotating rod. During operation, the rotary motor 8 is energized and its rotation angle is controlled to be 120 degrees each time. The rotary motor 8 drives the rotating rod and gear 4 94 to rotate. Then, after gear 4 94 rotates, it drives gear 3 93 and gear 2 92 connected in series to rotate through the limit of bearing 3 102 and bearing 2 101. The rotation of gear 4 94 drives gear 3 93 to rotate, and the rotation of gear 3 93 drives gear 2 92 to rotate. Then, the rotation of gear 2 92 drives gear 1 91 to rotate, and the rotation of gear 1 91 drives the transmission vertical rod 12 to rotate, which in turn causes the mold core 1 to rotate, thereby controlling the angle of rotation of the mold core 1 to be 120 degrees each time.

[0020] The transmission vertical rod 12 is rotatably mounted with a top roller 13 inside, and the bottom of the top roller 13 extends to below the bottom of the transmission vertical rod 12. During operation, the bottom end of the top roller 13 is connected to an external injection molding machine. Since the connection part of the injection molding machine cannot rotate, when the transmission vertical rod 12 rotates, the rotational installation of the top roller 13 with the transmission vertical rod 12 prevents the transmission vertical rod 12 from driving the connection part at the bottom end of the top roller 13 to rotate.

[0021] The gear 91 and gear 92, and gear 93 and gear 94 are connected in series; during operation, the rotation of gear 94 drives the rotation of gear 93, the rotation of gear 93 drives the rotation of gear 92, and the rotation of gear 92 drives the rotation of gear 91.

[0022] Example 2: Figures 6 to 8 As shown in the comparative embodiment one, another embodiment of the present invention further includes a connecting component, which is fixedly installed between gear two 92 and gear three 93. The connecting component includes a connecting ring one 14 and a connecting ring two 16 disposed on the top of gear two 92 and gear three 93, respectively. The connecting ring one 14 and connecting ring two 16 are rotatably installed on gear two 92 and gear three 93 through a limiting component. A connecting block 15 is fixedly connected between the connecting ring one 14 and connecting ring two 16. A through groove 17 is formed at the center of the connecting block 15. During operation, gears 2 92 and 3 93 are connected by an integrally formed connecting ring 14, connecting ring 2 16, and connecting block 15. This facilitates the simultaneous installation of gears 2 92 and 3 93 without requiring them to mesh during installation, making the installation operation simpler and more convenient. At the same time, the limiting component does not affect the rotation of gears 2 92 and 3 93 at the bottom of connecting ring 14 and connecting ring 2 16, and the groove 17 facilitates the removal and installation of the connecting component and gears 2 92 and 3 93.

[0023] The limiting assembly includes two limiting grooves 18 respectively opened inside gear 2 92 and gear 3 93. The upper surfaces of the two limiting grooves 18 extend to the outside of gear 2 92 and gear 3 93 respectively. Multiple evenly distributed limiting blocks 19 are rotatably connected inside the limiting grooves 18. The left limiting block 19 is fixedly connected to connecting ring 1 14, and the right limiting block 19 is fixedly connected to connecting ring 2 16. During operation, the limiting blocks 19 are inserted into the limiting grooves 18 so that the whole formed by connecting ring 1 14, connecting ring 2 16 and connecting block 15 can be stably installed on the top of gear 1 91 and gear 2 92, and facilitates the rotation of gear 2 92 and gear 3 93 at the bottom of connecting ring 1 14 and connecting ring 2 16.

[0024] Both the limiting groove 18 and the limiting block 19 are configured in an inverted T-shape. The bottoms of the connecting ring 14 and the connecting ring 16 respectively fit against the tops of the gear 2 92 and the gear 3 93. During operation, by configuring the limiting groove 18 and the limiting block 19 in an inverted T-shape, the limiting block 19 can be firmly inserted into the limiting groove 18 and will not move out of the limiting groove 18. It can also stably limit the rotation of the gear 2 92 and the gear 3 93. At the same time, the gear 2 92 and the gear 3 93 can rotate stably at the bottom of the connecting ring 14 and the connecting ring 16.

[0025] like Figure 9 As shown, a control method for a multi-color rotating core mechanism, which employs the aforementioned multi-color rotating core mechanism, includes the following steps: S1. The rotary motor 8 is powered on and controlled to rotate at an angle of 120 degrees each time. After the rotary motor 8 is working, it drives the rotating rod and gear 494 to rotate. S2. After gear 4 94 rotates, it drives gear 3 93 and gear 2 92 connected in series with it to rotate through the limiting of bearing 3 102 and bearing 2 101. The rotation of gear 4 94 drives gear 3 93 to rotate, and the rotation of gear 3 93 drives gear 2 92 to rotate. S3. After gear 2 92 rotates, it drives gear 1 91 to rotate, and the rotation of gear 1 91 drives the transmission vertical rod 12 to rotate, which in turn causes the mold core 1 to rotate, thereby controlling the angle of rotation of the mold core 1 to be 120 degrees each time.

[0026] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0027] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-color core-changing mechanism, comprising a mold core (1), wherein a B plate is fixedly mounted on the outer surface of the mold core (1); Its features are: A transmission vertical rod (12) is fixedly inserted inside the mold core (1). A gear assembly (9) is provided below the outer surface of the transmission vertical rod (12). The gear assembly (9) includes a gear (91). The gear (91) is fixedly installed below the outer surface of the transmission vertical rod (12). A bearing (10) is fixedly connected to the top and bottom of the gear (91). Multiple evenly distributed support rods are fixedly connected to the top of the inner side wall of the bearing (10). A transmission rod tube ring (11) is fixedly connected to the top of the support rod. The transmission rod tube ring (11) is fixedly installed with plate B. A transmission component is provided on the outer surface of the gear (91). The outer surface of the mold core (1) is provided with a one-color slider (2), a two-color slider (3) and a three-color slider (4). The one-color slider (2), the two-color slider (3) and the three-color slider (4) are all slidably connected to the B plate. The one-color slider (2) corresponds to a one-color product (5), the two-color slider (3) corresponds to a two-color product (6), and the three-color slider (4) corresponds to a three-color product (7). The mold core (1) has three evenly distributed inclined surfaces on its side, and the inclined surfaces are precisely fitted with plate B. The transmission assembly includes a gear two (92) meshing with the outer surface of gear one (91), a bearing two (101) fixedly installed inside the gear two (92), a gear three (93) meshing with the outer surface of the gear two (92), a bearing three (102) fixedly installed inside the gear three (93), a gear four (94) meshing with the outer surface of the gear three (93), a rotating rod fixedly connected to the gear four (94), and a rotating motor (8) fixedly installed at the top of the rotating rod. It also includes a connecting component, which is fixedly installed between gear two (92) and gear three (93). The connecting component includes a connecting ring one (14) and a connecting ring two (16) disposed on the top of gear two (92) and gear three (93). The connecting ring one (14) and the connecting ring two (16) are rotatably installed by a limiting component and gear two (92) and gear three (93). A connecting block (15) is fixedly connected between the connecting ring one (14) and the connecting ring two (16). A through groove (17) is provided at the center of the connecting block (15). The limiting component includes two limiting grooves (18) respectively opened inside the second gear (92) and the third gear (93). The upper surfaces of the two limiting grooves (18) extend to the outside of the second gear (92) and the third gear (93) respectively. Multiple evenly distributed limiting blocks (19) are rotatably connected inside the limiting grooves (18). The left limiting block (19) is fixedly connected to the first connecting ring (14), and the right limiting block (19) is fixedly connected to the second connecting ring (16).

2. The multi-color core-changing mechanism according to claim 1, characterized in that: A top rod (13) is rotatably installed inside the transmission vertical rod (12), and the bottom of the top rod (13) extends to below the bottom of the transmission vertical rod (12).

3. The multi-color core-changing mechanism according to claim 2, characterized in that: The gears 1 (91), 2 (92), 3 (93) and 4 (94) are connected in series.

4. The multi-color core-changing mechanism according to claim 3, characterized in that: The limiting groove (18) and the limiting block (19) are both set in an inverted T shape, and the bottom of the connecting ring one (14) and the connecting ring two (16) are respectively attached to the top of the gear two (92) and the gear three (93).

5. A control method for a multi-color rotating core mechanism, wherein the method employs the multi-color rotating core mechanism described in claim 4, characterized in that: Includes the following steps: S1. The rotary motor (8) is powered on and controlled to rotate at an angle of 120 degrees each time. After the rotary motor (8) is working, it drives the rotating rod and gear four (94) to rotate. S2. After gear four (94) rotates, it drives gear three (93) and gear two (92) connected in series with it to rotate through the limit of bearing three (102) and bearing two (101). The rotation of gear four (94) drives gear three (93) to rotate, and the rotation of gear three (93) drives gear two (92) to rotate. S3. After gear 2 (92) rotates, it drives gear 1 (91) to rotate. Gear 1 (91) rotates and drives transmission rod (12) to rotate, which in turn causes mold core (1) to rotate, thereby controlling the angle of each rotation of mold core (1) to be 120 degrees.

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