Double-color injection mold with circulating mechanism

Abstract

The utility model relates to the field of injection molds, in particular to a double-color injection mold with a circulating mechanism, which comprises a lower mold body, a water storage cavity is arranged in the lower mold body, a transmission lead screw is rotatably connected in the water storage cavity, the transmission lead screw is in threaded connection with a mounting seat, and the mounting seat is in threaded connection with the circulating mechanism. A brush is arranged on the side, close to the filter screen, of the mounting base, a gear is rotationally connected to the side, close to the sliding groove, of the lower die body, the gear is fixedly in butt joint with one end of the transmission lead screw, a rack plate is slidably connected into the sliding groove, and the rack plate is meshed with the gear. According to the double-color injection mold with the circulating mechanism, the rack plate is controlled to slide, at the moment, the rack plate is matched with the gear to drive the transmission lead screw to rotate, the mounting base and the brush can move along the transmission lead screw, in the process, the filter screen can be cleaned in the back-and-forth moving process of the mounting base and the brush, and therefore the service life of the double-color injection mold is prolonged. And the filtering efficiency of the filter screen is improved through a simple operation mode.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to a double-color injection mold with a circulation mechanism. Background Art

[0002] Two-color injection molds are also called two-color molds. They are mainly used in conjunction with two-color injection molding machines. They can inject two plastic materials on the same injection molding machine and form them twice, but the product is only ejected once. Two-color molds are becoming increasingly popular in the market because of their advantages of more beautiful appearance of plastic workpieces produced by them, and easy color change without spraying.

[0003] According to an existing Chinese patent document application document announcement number "CN 211968186U", a leak-proof circulating two-color injection molding mold, it can be known from its records that: it uses a water pump to pump the water inside the liquid storage tank into the cavity to cool the mold, thereby accelerating the molding speed inside the mold, and the cooled water is filtered and then re-enters the water storage tank for recycling, so that the water can achieve the effect of water recycling.

[0004] However, in actual use, water will produce a certain amount of scale after long-term use. When water mixed with scale is filtered, the scale will easily adhere to the filter net, causing the filter holes to be blocked, which will have a certain impact on the water circulation.

[0005] Therefore, it is necessary to provide a new two-color injection mold with a circulation mechanism to solve the above-mentioned technical problems. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a two-color injection mold with a circulation mechanism.

[0007] The double-color injection mold with a circulation mechanism provided by the utility model comprises a lower mold body, a water storage cavity is provided in the lower mold body, a circulation cavity connected to the water storage cavity is provided in the lower mold body, a slide groove is provided on one side of the lower mold body, the top four corners of the lower mold body are fixedly connected to limit columns, an upper mold body is slidably connected between the limit columns, and a filter screen is fixedly connected in the water storage cavity;

[0008] A transmission screw is rotatably connected in the water storage chamber, a mounting seat is threadedly connected on the transmission screw, and a brush is provided on the side of the mounting seat close to the filter screen, a gear is rotatably connected on the side of the lower mold body close to the slide groove, and the gear is fixedly connected to one end of the transmission screw, a rack plate is slidably connected in the slide groove, and the rack plate and the gear are meshed with each other.

[0009] Preferably, both sides of the top of the upper mold body are provided with injection holes, and both sides of the top of the upper mold body are provided with two tracks, and the tracks are respectively located on both sides of the injection holes on the same side.

[0010] Preferably, a limit seat is slidably connected in the track, and a slidably connected docking rod is accommodated at the bottom of the limit seat. A screw is threadedly connected to the limit seat, and the bottom end of the screw is fixedly docked with the top of the docking rod, and a knob A is fixedly connected to the top of the screw.

[0011] Preferably, a spring is fixedly connected to an inner wall of one side of the slide groove, and the other end of the spring is fixedly connected to the rack plate.

[0012] Preferably, one side of the top of the upper mold body is rotatably connected to a shaft rod through a frame, and both ends of the shaft rod are fixedly connected to rotating screw rods with opposite threads. The limit seats are threadedly connected to the rotating screw rods on the same side through the frame, and a knob B for driving the shaft rod to rotate is installed on the top of the limit seat through the frame.

[0013] Preferably, a water pump is fixedly connected to the top wall of the water storage chamber, and the output end of the water pump is fixedly connected to the inlet of the circulation chamber.

[0014] Preferably, a sealing plate is fixedly connected to the bottom of the lower mold body, and a water injection hole communicating with the water storage cavity is provided on one side of the lower mold body.

[0015] Compared with the related art, the two-color injection mold with a circulation mechanism provided by the utility model has the following beneficial effects:

[0016] 1. After the water in the water storage chamber has been used for a certain period of time, the rack plate is manually controlled to slide. At this time, the rack plate cooperates with the gear to drive the transmission screw to rotate, so that the mounting seat and the brush can move along the transmission screw. When the rack plate moves to the other end of the slide groove, the rack plate is released. At this time, the spring contracts and drives the rack plate back to its original position. At this time, the rack plate can use the gear to drive the transmission screw to rotate in the opposite direction, so that the mounting seat and the brush return to their original positions. In this process, the mounting seat and the brush can clean the filter screen while moving back and forth, thereby improving the filtering efficiency of the filter screen through simple operation.

[0017] 2. After the use of the mold, the utility model moves the limit seat to the top of the injection hole, and rotates the screw to lower the docking rod. After the docking rod is lowered, it will be inserted into the injection hole to clean the residue on the inner wall of the injection hole. At the same time, the injection hole is sealed to prevent external dust from entering the mold through the injection hole, which will affect the quality of subsequent plastic products. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A structural schematic diagram of a preferred embodiment of a two-color injection mold with a circulation mechanism provided by the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the bottom structure of the lower mold body shown;

[0020] Figure 3 for Figure 2 A schematic diagram of the internal structure of the water storage cavity of the lower mold body shown;

[0021] Figure 4 for Figure 3 The structural schematic diagram of the transmission screw and its transmission components shown;

[0022] Figure 5 for Figure 1 A schematic diagram of the structure of the upper mold body shown;

[0023] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure of the limit seat shown.

[0024] Numbers in the figure: 1. Lower mold body; 11. Water storage chamber; 12. Sealing plate; 13. Circulation chamber; 14. Water injection hole; 15. Slide; 16. Limit column; 2. Water pump; 21. Filter; 3. Transmission screw; 31. Mounting seat; 32. Brush; 33. Gear; 34. Rack plate; 35. Spring; 4. Upper mold body; 41. Injection hole; 42. Track; 5. Limit seat; 51. Docking rod; 52. Screw; 53. Knob A; 54. Shaft; 55. Rotating screw; 56. Knob B. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0027] See also Figures 1 to 6 The double-color injection mold with a circulation mechanism provided by an embodiment of the utility model comprises a lower mold body 1, a water storage chamber 11 is provided in the lower mold body 1, a circulation chamber 13 connected to the water storage chamber 11 is provided in the lower mold body 1, a slide groove 15 is provided on one side of the lower mold body 1, the four corners of the top of the lower mold body 1 are fixedly connected to limiting columns 16, a sealing plate 12 is fixedly connected to the bottom of the lower mold body 1, and a water injection hole 14 connected to the water storage chamber 11 is provided on one side of the lower mold body 1.

[0028] It should be noted that: the lower mold body 1 is the bottom body of the two-color injection mold, which cooperates with the upper mold body 4 to perform injection molding on the plastic material. A certain amount of water can be filled into the water storage chamber 11 through the water injection hole 14, and then the water circulation is completed by cooperating with the circulation chamber 13. During the flow of water in the circulation chamber 13, the plastic product on the lower mold body 1 can be cooled to improve its injection molding efficiency.

[0029] In the embodiments of the present invention, please refer to Figure 3 and Figure 4 A water pump 2 is fixedly connected to the top wall of the water storage chamber 11, and the output end of the water pump 2 is fixedly connected to the inlet of the circulation chamber 13, and a filter screen 21 is fixedly connected to the water storage chamber 11;

[0030] A transmission screw 3 is rotatably connected in the water storage chamber 11, a mounting seat 31 is threadedly connected on the transmission screw 3, and a brush 32 is provided on the side of the mounting seat 31 close to the filter screen 21, a gear 33 is rotatably connected to the side of the lower mold body 1 close to the slide groove 15, and the gear 33 is fixedly connected to one end of the transmission screw 3, a rack plate 34 is slidably connected in the slide groove 15, and the rack plate 34 and the gear 33 are meshed with each other, a spring 35 is fixedly connected to the inner wall of one side of the slide groove 15, and the other end of the spring 35 is fixedly connected to the rack plate 34.

[0031] It should be noted that: during the injection molding process, the water pump 2 is started to transport the water in the water storage chamber 11 to the circulation chamber 13, and the water eventually flows into the water storage chamber 11 through the outlet of the circulation chamber 13, and then the impurities and scale in the water are filtered through the filter 21. At this time, the circulating water can cool the plastic parts in the lower mold body 1;

[0032] It should also be noted that: after the water in the water storage chamber 11 has been used for a certain period of time, the staff can manually move the rack plate 34 to move along the slide 15. During the movement, the spring 35 can be stretched. During the movement, the rack plate 34 can drive the gear 33 to rotate, and the gear 33 drives the transmission screw 3 to rotate. The top and bottom of the mounting seat 31 are respectively against the top wall of the water storage chamber 11 and the top of the sealing plate 12. Therefore, during the rotation of the transmission screw 3, the mounting seat 31 and the brush 32 can be adjusted to move along the transmission screw 3. When the rack plate 34 moves to one end of the slide groove 15, the rack plate 34 is released. At this time, the spring 35 rebounds and contracts, driving the rack plate 34 to move in the opposite direction. During the movement, the rack plate 34 can drive the gear 33 to rotate in the opposite direction. During the reverse rotation of the gear 33, it can continue to drive the mounting seat 31 and the brush 32 to move back along the transmission screw 3. During the reciprocating movement of the mounting seat 31 and the brush 32, the brush 32 can be used to clean the filter screen 21, and remove impurities and scale on the filter screen 21.

[0033] In the embodiments of the present invention, please refer to Figure 1 , Figure 5 and Figure 6 , an upper mold body 4 is slidably connected between the limit columns 16, and both sides of the top of the upper mold body 4 are provided with injection holes 41, and both sides of the top of the upper mold body 4 are provided with two tracks 42, and the tracks 42 are respectively located on both sides of the injection holes 41 on the same side;

[0034] A limit seat 5 is slidably connected in the track 42, and a slidably connected docking rod 51 is accommodated at the bottom of the limit seat 5. A screw 52 is threadedly connected to the limit seat 5, and the bottom end of the screw 52 is fixedly docked with the top of the docking rod 51, and a knob A53 is fixedly connected to the top of the screw 52. A shaft 54 ​​is rotatably connected to one side of the top of the upper mold body 4 through a frame, and both ends of the shaft 54 ​​are fixedly connected to rotating screws 55 with opposite threads. The limit seats 5 are threadedly connected to the rotating screws 55 on the same side through the frame, and a knob B56 for driving the shaft 54 ​​to rotate is installed on the top of the limit seat 5 through the frame.

[0035] It should be noted that: when performing the injection molding, the upper mold body 4 is fitted with the lower mold body 1, and then the plastic raw material is input through the injection hole 41 and input into between the lower mold body 1 and the upper mold body 4, and then the plastic is cooled and solidified, and then the upper mold body 4 is separated from the lower mold body 1, and then the molded plastic product can be taken out;

[0036] It should also be noted that: after the mold is used, the shaft 54 ​​and the rotating screw 55 are driven to rotate by the knob B56. Since the threads of the rotating screws 55 at both ends of the shaft 54 ​​are opposite, the rotating screws 55 at both ends of the shaft 54 ​​will drive the two limit seats 5 to close during the rotation process. When the limit seat 5 moves to the other end of the track 42, the knob A53 is turned to drive the screw 52 to rotate. During the rotation process, the screw 52 can descend along the limit seat 5 and drive the docking rod 51 to descend in a rotating motion state. When the docking After the rod 51 is inserted into the injection hole 41, the rotating and descending docking rod 51 can clean the residue on the inner wall of the injection hole 41 and seal the injection hole 41 at the same time. When the mold needs to be reused, the knob A53 is rotated in the opposite direction to drive the docking rod 51 to rise through the screw 52, ​​so that the docking rod 51 is pulled out of the injection hole 41, and then the shaft 54 ​​is driven to rotate in the opposite direction through the knob B56, and the rotating screws 55 at both ends of the shaft 54 ​​are used to move the two limit seats 5 toward the other end of the track 42 until the injection hole 41 is exposed, and then the injection molding work can be carried out.

[0037] The working principle of the two-color injection mold with a circulation mechanism provided by the utility model is as follows:

[0038] First, the lower mold body 1 and the upper mold body 4 are installed at the designated working position of the two-color injection molding machine, and then a certain amount of water is filled into the water storage chamber 11 through the water injection hole 14, and then the water injection hole 14 is blocked. During the injection molding work, the upper mold body 4 is made to fit with the lower mold body 1, and then the plastic raw material is input through the injection hole 41 and input into the space between the lower mold body 1 and the upper mold body 4;

[0039] At this time, the water pump 2 is started to transport the water in the water storage chamber 11 to the circulation chamber 13. The water will eventually flow into the water storage chamber 11 through the outlet of the circulation chamber 13, and then the impurities and scale in the water will be filtered through the filter 21. At this time, the circulating water can cool the plastic parts in the lower mold body 1. When the plastic is cooled and solidified, the upper mold body 4 is separated from the lower mold body 1, and then the molded plastic product can be taken out, and then the next injection molding work can be carried out;

[0040] After the water in the water storage chamber 11 has been used for a certain period of time, the staff can manually move the rack plate 34 to move along the slide 15. During the movement, the spring 35 can be stretched. During the movement, the rack plate 34 can drive the gear 33 to rotate, and the gear 33 drives the transmission screw 3 to rotate. The top and bottom of the mounting seat 31 are respectively against the top wall of the water storage chamber 11 and the top of the sealing plate 12. Therefore, during the rotation of the transmission screw 3, the mounting seat 31 and the brush 32 can be adjusted to move along the transmission screw 3. After the plate 34 moves to one end of the slide slot 15, the rack plate 34 is released, and the spring 35 rebounds and contracts, driving the rack plate 34 to move in the opposite direction. During the movement, the rack plate 34 can drive the gear 33 to rotate in the opposite direction. During the reverse rotation of the gear 33, the mounting seat 31 and the brush 32 can continue to move back along the transmission screw 3. During the reciprocating movement of the mounting seat 31 and the brush 32, the filter screen 21 can be cleaned by the brush 32 to remove impurities and scale on the filter screen 21.

[0041] After using the mold, remove the lower mold body 1 and the upper mold body 4 from the injection molding machine, and then use the knob B56 to drive the shaft rod 54 and the rotating screw rod 55 to rotate. Since the threads of the rotating screw rods 55 at both ends of the shaft rod 54 are opposite, the rotating screw rods 55 at both ends of the shaft rod 54 will drive the two limit seats 5 to close during the rotation. When the limit seat 5 moves to the other end of the track 42, turn the knob A53 to drive the screw rod 52 to rotate. During the rotation, the screw rod 52 can descend along the limit seat 5 and drive the docking rod 51 to descend in a rotating state. When the docking rod 51 is inserted into the injection hole 41, the rotating and descending docking rod 51 can clean the residue on the inner wall of the injection hole 41 and seal the injection hole 41 at the same time. Then the mold can be placed at the designated storage point.

[0042] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0043] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A two-color injection mold with a circulation mechanism, comprising a lower mold body (1), wherein a water storage chamber (11) is provided in the lower mold body (1), wherein a circulation chamber (13) communicating with the water storage chamber (11) is provided in the lower mold body (1), wherein a slide groove (15) is provided on one side of the lower mold body (1), wherein the top four corners of the lower mold body (1) are fixedly connected to limit columns (16), and an upper mold body (4) is slidably connected between the limit columns (16), characterized in that: A filter screen (21) is fixedly connected to the water storage chamber (11); A transmission screw (3) is rotatably connected in the water storage chamber (11), a mounting seat (31) is threadedly connected on the transmission screw (3), and a brush (32) is provided on a side of the mounting seat (31) close to the filter screen (21); a gear (33) is rotatably connected to a side of the lower mold body (1) close to the slide groove (15), and the gear (33) is fixedly connected to one end of the transmission screw (3); a rack plate (34) is slidably connected in the slide groove (15), and the rack plate (34) and the gear (33) are meshed with each other.

2. The two-color injection mold with a circulation mechanism according to claim 1, characterized in that: Injection holes (41) are provided on both sides of the top of the upper mold body (4), and two rails (42) are provided on both sides of the top of the upper mold body (4), and the rails (42) are respectively located on both sides of the injection hole (41) on the same side.

3. The two-color injection mold with a circulation mechanism according to claim 2, characterized in that: The track (42) is slidably connected to a limit seat (5), and a slidably connected docking rod (51) is accommodated at the bottom of the limit seat (5). A screw rod (52) is threadedly connected to the limit seat (5), and the bottom end of the screw rod (52) is fixedly docked with the top of the docking rod (51), and the top of the screw rod (52) is fixedly connected to a knob A (53).

4. The two-color injection mold with a circulation mechanism according to claim 1, characterized in that: A spring (35) is fixedly connected to an inner wall of one side of the slide groove (15), and the other end of the spring (35) is fixedly connected to the rack plate (34).

5. The two-color injection mold with a circulation mechanism according to claim 3, characterized in that: One side of the top of the upper mold body (4) is rotatably connected to a shaft rod (54) through a frame body, and both ends of the shaft rod (54) are fixedly connected to rotating screw rods (55) with threads opposite to each other. The limit seat (5) is threadedly connected to the rotating screw rod (55) on the same side through the frame body, and a knob B (56) for driving the shaft rod (54) to rotate is installed on the top of the limit seat (5) through the frame body.

6. The two-color injection mold with a circulation mechanism according to claim 1, characterized in that: A water pump (2) is fixedly connected to the top wall of the water storage chamber (11), and the output end of the water pump (2) is fixedly connected to the inlet of the circulation chamber (13).

7. The two-color injection mold with a circulation mechanism according to claim 1, characterized in that: A sealing plate (12) is fixedly connected to the bottom of the lower mold body (1), and a water injection hole (14) communicating with the water storage chamber (11) is provided on one side of the lower mold body (1).

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