Plastic mold flow adjusting mechanism

Abstract

The utility model relates to the technical field of plastic molds, in particular to a plastic mold flow adjusting mechanism which comprises a mold frame and a mold core detachably installed in the mold frame, a through groove is formed in the center of the interior of the mold core, flow channels are formed in the two sides of the through groove, the flow channels are communicated with the mold groove, and a flow adjuster is arranged in the through groove. The flow regulator comprises a regulating rod and a regulating seat mounted at the bottom end of the regulating rod, a flow notch is formed in the top end of the regulating rod and is formed by combining a long groove and a short groove, a positioning bead hole is formed in the bottom of the regulating seat, and a bead screw abuts against the lower portion of the positioning bead hole. In the injection molding process, when the flow of the flow channels needs to be adjusted, two groups of the flow channels are communicated after the two ends of the long groove of the flow groove opening are aligned with the flow channels by rotating the flow adjuster, two groups can be formed through injection molding, and one group can be formed through injection molding after one end of the short groove of the flow groove opening is aligned with one group of the flow channels. Therefore, different runners can be switched at will during injection molding of the mold.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molds, in particular to a flow regulating mechanism for a plastic mold. Background Art

[0002] At present, when plastic molds involve requirements such as one mold with multiple cavities or different products in the same mold, it is necessary to control the flow rate of the runner. The common flow regulation method is to control the flow speed and path of the plastic material by setting a specific structure, aperture, and angle in the mold runner, thereby avoiding defects in the product in the mold groove during the molding process.

[0003] In the prior art, a patent with publication number CN201863358U discloses a plastic mold with adjustable flow rate of a runner, including a fixed mold plate, a fixed mold base plate, a cavity, a movable mold plate, a movable mold base plate, a core and a sprue sleeve, wherein the cavity is fixed to the fixed mold plate, the core is fixed to the movable mold plate, a runner is provided on the parting surface between the cavity and the core, the sprue sleeve passes through the fixed mold plate and the cavity from the side of the fixed mold base plate and is communicated with the runner, and also includes a flow regulating pin, a circular hole communicating with the runner is provided on the core, the flow regulating pin is inserted into the circular hole from the outside of the core, and the end portion extends into the runner to adjust the cross-sectional size of the runner.

[0004] The above structure adjusts the flow of the flow channel through the flow regulating pin, and the flow can be adjusted from the parting surface when the mold is assembled. However, there are often multiple sets of flow channels inside the mold, and different flow channels cannot be switched arbitrarily during the injection mold, and the applicability is poor. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a plastic mold flow regulating mechanism to solve the problem that there are often multiple sets of flow channels inside the mold and different flow channels cannot be switched arbitrarily during injection molding.

[0006] Based on the above purpose, the utility model provides a plastic mold flow regulating mechanism, including a mold frame and a mold core detachably installed in the mold frame, a through groove is opened at the inner center of the mold core, flow channels are opened on both sides of the through groove, and the flow channels are connected to the mold groove, and a flow regulator is arranged inside the through groove, and the flow regulator is used to switch the flow in the flow channels on both sides;

[0007] The flow regulator comprises an adjusting rod and an adjusting seat installed at the bottom end of the adjusting rod, a flow slot is provided at the top end of the adjusting rod, the flow slot is a combination of a long slot and a short slot, a positioning bead hole is provided at the bottom of the adjusting seat, and a bead screw is abutted below the positioning bead hole;

[0008] A screw hole is provided inside the mold frame, and the ball screw thread is fitted inside the screw hole.

[0009] Preferably, the adjusting rod and the adjusting seat are an integrated structure, and the inside of the adjusting rod and the adjusting seat are both hollow.

[0010] Preferably, the positioning bead holes are distributed around the bottom of the adjustment seat, and the positioning bead holes are distributed in at least four groups.

[0011] Preferably, a headless screw is further provided inside the screw hole, and the top end of the headless screw abuts against the ball screw.

[0012] Preferably, a hexagonal hole is provided at the center of the flow slot, and the hexagonal hole is used to be combined with a hexagonal wrench to drive the flow regulator to rotate.

[0013] Preferably, the radius of the adjustment seat is greater than the radius of the adjustment rod, and the through groove is adapted to the size of the adjustment rod and the adjustment seat.

[0014] The beneficial effects of the utility model are as follows: during the injection molding process, by rotating the flow regulator, after the two ends of the long groove of the flow slot are aligned with the flow channel, the two groups of flow channels are connected, and two groups can be molded through injection molding. When one end of the short groove of the flow slot is aligned with one group of flow channels, another group can be molded through injection molding, and the positioning ball hole at the bottom of the adjustment seat is in contact with the ball screw to improve the stability of the flow regulator, so that different flow channels can be switched arbitrarily during the injection mold, and the number of injection moldings required can be controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the top view of the mold core of the utility model;

[0018] Figure 3 It is a schematic diagram of the half-section three-dimensional structure of the utility model as a whole;

[0019] Figure 4 For this utility model Figure 4 The enlarged structural diagram of part A in the middle;

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the flow regulator of the utility model.

[0021] The markings in the figure are: 1. mold frame; 2. mold core; 3. through groove; 4. flow regulator; 5. flow channel; 6. flow notch; 7. hexagonal hole; 8. adjusting rod; 9. adjusting seat; 10. positioning ball hole; 11. ball screw; 12. headless screw; 13. screw hole. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a plastic mold flow regulating mechanism comprises a mold frame 1 and a mold core 2 detachably installed in the mold frame 1, a through groove 3 is opened at the inner center of the mold core 2, flow channels 5 are opened on both sides of the through groove 3, the flow channels 5 are connected to the mold groove, and a flow regulator 4 is arranged inside the through groove 3, and the flow regulator 4 is used to switch the flow in the flow channels 5 on both sides;

[0024] The flow regulator 4 includes an adjusting rod 8 and an adjusting seat 9 installed at the bottom of the adjusting rod 8. The top of the adjusting rod 8 is provided with a flow slot 6, which is a combination of a long slot and a short slot. The bottom of the adjusting seat 9 is provided with a positioning bead hole 10, and a bead screw 11 is abutted below the positioning bead hole 10.

[0025] A screw hole 13 is provided inside the mold frame 1 , and the ball screw 11 is threadedly engaged inside the screw hole 13 .

[0026] In this embodiment, the ball screw 11 at the bottom of the flow regulator 4 is first inserted into the screw hole 13, the bottom of the flow regulator 4 is kept in contact with the ball screw 11, the mold core 2 is sleeved on the outside of the flow regulator 4, and the mold core 2 is installed on the mold frame 1. During the injection molding process, after the two ends of the long groove of the flow slot 6 are aligned with the flow channel 5, the two groups of flow channels 5 are connected, and two groups can be formed by injection molding.

[0027] When the flow of the flow channel 5 needs to be adjusted, by rotating the flow regulator 4, when one end of the short groove of the flow slot 6 is aligned with one group of flow channels 5, the positioning ball hole 10 at the bottom of the adjustment seat 9 conflicts with the ball screw 11 to improve the stability of the flow regulator 4, and then a group can be formed through injection molding, so that the flow channel 5 can be switched arbitrarily during the injection molding, and the number of injection moldings required can be controlled.

[0028] As an implementation method, Figure 5 As shown, the adjusting rod 8 and the adjusting seat 9 are an integrated structure, and the inside of the adjusting rod 8 and the adjusting seat 9 are both hollow.

[0029] The positioning bead holes 10 are distributed around the bottom of the adjustment seat 9, and the positioning bead holes 10 are distributed in at least four groups.

[0030] In this embodiment, by rotating the flow slot 6, when the short slot is switched to the long slot, the corresponding slot is aligned with the flow channel 5, and the positioning ball hole 10 at the bottom of the adjustment seat 9 and the ball screw 11 are used to improve the stability of the flow regulator 4.

[0031] As an implementation method, Figure 3 and Figure 4 As shown, a headless screw 12 is further arranged inside the screw hole 13 , and the top end of the headless screw 12 abuts against the ball screw 11 .

[0032] In this embodiment, a headless screw 12 is inserted through the screw hole 13, and the top of the headless screw 12 abuts against the ball screw 11 to support the ball screw 11 to prevent the ball screw 11 from being separated from the positioning ball hole 10 and moving when the flow slot 6 rotates.

[0033] As an implementation method, Figure 5 As shown, a hexagonal hole 7 is provided at the center of the flow slot 6, and the hexagonal hole 7 is used to be combined with a hexagonal wrench to drive the flow regulator 4 to rotate.

[0034] In this embodiment, a hexagonal wrench is inserted into the hexagonal hole 7 , and the hexagonal wrench is combined with the adjustment rod 8 to drive the flow regulator 4 to rotate, so as to facilitate switching of different flow channels 5 .

[0035] As an implementation method, Figure 3 , Figure 4 and Figure 5 As shown, the radius of the adjusting seat 9 is greater than the radius of the adjusting rod 8 , and the through slot 3 is adapted to the size of the adjusting rod 8 and the adjusting seat 9 .

[0036] In this embodiment, the radius of the adjustment seat 9 is larger than the radius of the adjustment rod 8 to form a T-shaped structure, so that the adjustment rod 8 and the adjustment seat 9 can rotate inside the through groove 3 between the mold core 2 and the mold frame 1, which is more stable.

[0037] Working principle: When in use, first insert the ball screw 11 at the bottom of the flow regulator 4 into the screw hole 13, keep the bottom of the flow regulator 4 in contact with the ball screw 11, sleeve the mold core 2 on the outside of the flow regulator 11, install the mold core 2 on the mold frame 1, insert the headless screw 12 through the screw hole 13 at the bottom of the mold frame 1, and the top of the headless screw 12 contacts the ball screw 11;

[0038] During the injection molding process, when the flow rate of the flow channel 5 needs to be adjusted, the flow regulator 4 is rotated, and the two ends of the long groove of the flow slot 6 are aligned with the flow channel 5, so that the two groups of flow channels 5 are connected, and two groups can be formed through injection molding;

[0039] When one end of the short groove of the flow slot 6 is aligned with one group of flow channels 5, a group can be formed by injection molding. At this time, the positioning ball hole 10 at the bottom of the adjustment seat 9 conflicts with the ball screw 11 to improve the stability of the flow regulator 4. At the same time, the headless screw 11 supports the ball screw 11 to prevent the ball screw 11 from being separated from the positioning ball hole 10 and causing movement when the flow slot 6 rotates, so that different flow channels 5 can be switched arbitrarily during the injection mold, and the number of injection moldings required can be controlled.

[0040] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0041] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A plastic mold flow regulating mechanism, comprising a mold frame (1) and a mold core (2) detachably mounted in the mold frame (1), wherein a through groove (3) is provided at the inner center of the mold core (2), and flow channels (5) are provided on both sides of the through groove (3), and the flow channels (5) are connected to the mold groove, characterized in that: A flow regulator (4) is provided inside the through groove (3), and the flow regulator (4) is used to switch the flow in the flow channels (5) on both sides; The flow regulator (4) comprises an adjusting rod (8) and an adjusting seat (9) mounted at the bottom end of the adjusting rod (8); a flow slot (6) is provided at the top end of the adjusting rod (8); the flow slot (6) is a combination of a long slot and a short slot; a positioning bead hole (10) is provided at the bottom of the adjusting seat (9); a bead screw (11) abuts against the bottom of the positioning bead hole (10); A screw hole (13) is provided inside the mold frame (1), and the ball screw (11) is threadedly fitted inside the screw hole (13).

2. A plastic mold flow regulating mechanism according to claim 1, characterized in that: The adjusting rod (8) and the adjusting seat (9) are an integrated structure, and the insides of the adjusting rod (8) and the adjusting seat (9) are both hollow.

3. A plastic mold flow regulating mechanism according to claim 1, characterized in that: The positioning bead holes (10) are distributed around the bottom of the adjustment seat (9), and the positioning bead holes (10) are distributed in at least four groups.

4. A plastic mold flow regulating mechanism according to claim 1, characterized in that: A headless screw (12) is also arranged inside the screw hole (13), and the top end of the headless screw (12) abuts against the ball screw (11).

5. A plastic mold flow regulating mechanism according to claim 1, characterized in that: A hexagonal hole (7) is provided at the center of the flow slot (6), and the hexagonal hole (7) is used to be combined with a hexagonal wrench to drive the flow regulator (4) to rotate.

6. A plastic mold flow regulating mechanism according to claim 1, characterized in that: The radius of the adjustment seat (9) is greater than the radius of the adjustment rod (8), and the through groove (3) is adapted to the size of the adjustment rod (8) and the adjustment seat (9).

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