Hot runner mold with cooling structure

Abstract

The utility model discloses a hot runner mold with a cooling structure, which comprises a fixed base, a first vertical plate fixedly mounted on one side of the top end of the fixed base, a second vertical plate fixedly mounted on the other side of the top end of the fixed base, and a hot runner bottom mold fixedly mounted in the middle of one side of the second vertical plate. The hot runner mold comprises a fixed base, a second vertical plate and a first vertical plate are arranged on the fixed base, a feeding mechanism located on one side of the second vertical plate is fixedly installed on the fixed base, an opening and closing mechanism located on one side of the first vertical plate is installed on the fixed base, and length rods are fixedly installed at the two ends of one side of the first vertical plate. Condensate for cooling is injected through a liquid inlet of the heat conduction shell, the heat conduction shell is tightly attached to the two sides of the hot runner bottom die, heat transfer heat dissipation is conducted on the hot runner bottom die, a product is opened and closed after heat transfer heat dissipation, traditional natural cooling is replaced, the cooling time of the product is shortened, and the product preparation efficiency of the hot runner die is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot runner molds, in particular to a hot runner mold with a cooling structure. Background Art

[0002] Hot runner is a technology used in injection molds. It preheats the injection material to keep it at a higher temperature during the injection process. Hot runner technology can speed up the injection cycle, reduce injection time, and improve production efficiency. Because the preheated injection material is easier to flow, the time to fill the mold is shorter, making production faster. Hot runner technology can provide a more uniform temperature distribution and reduce the impact of material temperature changes on product quality. At the same time, it can avoid traces of condensation, reduce or eliminate quality problems such as scorching and melt degradation, and improve the appearance and mechanical properties of the product.

[0003] However, traditional hot runner molds have the following disadvantages:

[0004] Traditional hot runner molds preheat the raw materials to increase the fluidity of the raw materials before injection molding. The temperature of the product after injection molding is too high, which is not conducive to direct demolding. It is necessary to wait for it to cool to the natural temperature before demolding, which increases the preparation time of the product. Utility Model Content

[0005] The utility model aims to provide a hot runner mold with a cooling structure to solve the problem that the traditional hot runner mold proposed in the above background technology preheats the raw materials to increase the fluidity of the raw materials before injection molding, and the temperature of the product after injection molding is too high, which is not conducive to direct demolding. It is necessary to wait for it to cool to the natural temperature before demolding, which increases the preparation time of the product.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hot runner mold with a cooling structure, comprising a fixed base, a first vertical plate fixedly installed on one side of the top of the fixed base, a second vertical plate fixedly installed on the other side of the top of the fixed base, a hot runner bottom mold fixedly installed in the middle of one side of the second vertical plate, a feeding mechanism located on one side of the second vertical plate fixedly installed on the fixed base, an opening and closing mechanism located on one side of the first vertical plate installed on the fixed base, length rods fixedly installed on both ends of one side of the first vertical plate, two sides of the length rods away from the first vertical plate are fixedly connected to the side opposite to the second vertical plate, a sliding plate is slidably connected between the two length rods, a hot runner top mold is provided on one side of the sliding plate, a cooling mechanism is installed on the surface of the hot runner bottom mold, the cooling mechanism comprises two heat-conducting shells and two driven pulleys, stirring paddles are rotatably connected to the inside of the two heat-conducting shells, and one end of the two stirring paddles extends to the outside and is respectively fixedly connected to the inside of the two driven pulleys.

[0007] Preferably, a double-headed motor is provided on one side of the heat-conducting shell, and a rotating shaft is fixedly installed at two output ends of the double-headed motor, and driving pulleys are fixedly installed on the surfaces of the two rotating shafts, and a belt body is respectively connected to the two driving pulleys for transmission with the two driven pulleys, and one side of the double-headed motor is fixedly connected to the side opposite to the second vertical plate. The double-headed motor is started after being energized, and the double-headed motor drives the rotating shaft and the driving pulley to rotate, and the driving pulley drives the driven pulley to rotate through the belt body, and the driven pulley drives the stirring paddle to rotate, and the stirring paddle stirs the liquid in the heat-conducting shell so that the low-temperature condensate can always be in contact with the bottom mold of the hot runner.

[0008] Preferably, the opposite sides of the two heat-conducting shells are respectively fixedly connected to the two ends of the hot runner bottom mold, and the liquid inlets of the two heat-conducting shells and the liquid outlets of the two heat-conducting shells are both fitted with sealing plugs, and the condensate for cooling is injected through the liquid inlets of the heat-conducting shells. The heat-conducting shells are tightly attached to the two sides of the hot runner bottom mold to transfer and dissipate heat to the hot runner bottom mold.

[0009] Preferably, the feeding mechanism includes a feeding rack and a feeding shell, the top end of the feeding rack is fixedly connected to the bottom end of the feeding shell, the inside of the feeding shell is rotatably connected to a conveying screw, one side of the feeding shell is fixedly connected to an injection hose extending to the inside of the hot runner bottom mold, the top end of the feeding shell is fixedly connected to a feeding hopper, a stepper motor for driving the conveying screw to rotate is fixedly installed on the surface of the feeding shell, the bottom end of the feeding rack is fixedly connected to a fixed base, the material is injected into the feeding shell through the feeding hopper, the stepper motor is started after being energized, the stepper motor drives the conveying screw to rotate, the conveying screw conveys the material in the feeding shell, and the material is finally injected into the hot runner bottom mold from the injection hose through the conveying.

[0010] Preferably, the opening and closing mechanism comprises a screw rod and a connecting block, one end of the screw rod is rotatably connected to one end of the connecting block, the middle part of the screw rod is threadedly connected to the first vertical plate, and the connection between the first vertical plate and the screw rod is rotatably connected to a driven gear, the inner part of the driven gear is threadedly connected to the surface of the screw rod, the bottom end of the driven gear is provided with a motor base, the top of the motor base is fixedly installed with a servo motor, the output end of the servo motor is fixedly installed with a driving gear, the outer side of the driving gear is meshed and connected with the outer side of the driven gear, the bottom end of the motor base is fixedly connected to the fixed base, the side of the connecting block away from the screw rod is fixedly connected to the side opposite to the sliding plate, the servo motor is started after being energized, the servo motor drives the driving gear to rotate, the driving gear contacts the driven gear, the driven gear rotates under the friction force, the thread on the inner wall of the driven gear matches the thread on the surface of the screw rod, so the screw rod rotates relative to the driven gear and the first vertical plate, and the screw rod pulls the connecting block from one side, and the sliding plate slides along the length rod.

[0011] Preferably, a first heating base is fixedly installed on one side of the hot runner top mold, a second heating base is fixedly installed on one side of the first heating base, a side of the second heating base away from the first heating base is fixedly connected to a side opposite to the slide plate, a heating plate is fixedly installed inside the first heating base and inside the second heating base, heating columns extending to the outside are fixedly installed at both ends of one side of the second heating base, slots are provided at both ends of one side of the hot runner bottom mold, the two heating columns are respectively arranged corresponding to the two slots, the heating plate heats from one side of the hot runner top mold, and the heating columns heat from both sides of the hot runner top mold.

[0012] Preferably, a molding groove is provided on the surface of the hot runner bottom mold, and the hot runner top mold is arranged corresponding to the molding groove, and the hot runner bottom mold and the molding groove cooperate with each other to perform injection molding on the material.

[0013] Compared with the prior art, the utility model has the following beneficial effects: by setting up a cooling mechanism, condensate for cooling is injected through the liquid inlet of the heat-conducting shell, the heat-conducting shell is tightly attached to both sides of the hot runner bottom mold, heat transfer and heat dissipation of the hot runner bottom mold is carried out, and the product is opened and closed after heat transfer and heat dissipation, replacing traditional natural cooling, shortening the cooling time of the product, and improving the efficiency of hot runner mold preparation products. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a side view of the utility model;

[0015] Figure 2 It is a cross-sectional view of the cooling mechanism of the utility model;

[0016] Figure 3 It is a side view of the cooling mechanism of the utility model;

[0017] Figure 4 It is a cross-sectional view of the feeding mechanism of the utility model;

[0018] Figure 5 It is a partial schematic diagram of the utility model.

[0019] In the figure: 1. fixed base; 2. first vertical plate; 3. second vertical plate; 4. cooling mechanism; 41. double-headed motor; 42. rotating shaft; 43. heat-conducting shell; 44. sealing plug; 45. stirring paddle; 46. driven pulley; 47. belt body; 48. driving pulley; 5. feeding mechanism; 51. feeding rack; 52. feeding shell; 53. stepping motor; 54. feeding hopper; 55. conveying screw; 56. injection hose; 6. hot runner bottom mold; 7. card slot; 8. molding slot; 9. length rod; 10. sliding plate; 11. opening and closing mechanism; 111. motor base; 112. servo motor; 113. driving gear; 114. driven gear; 115. screw rod; 116. connecting block; 12. first heating base; 13. hot runner top mold; 14. heating column; 15. second heating base; 16. heating plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] See also Figure 1-5 The utility model provides a hot runner mold with a cooling structure, comprising a fixed base 1, a first vertical plate 2 is fixedly installed on one side of the top of the fixed base 1, a second vertical plate 3 is fixedly installed on the other side of the top of the fixed base 1, a hot runner bottom mold 6 is fixedly installed in the middle of one side of the second vertical plate 3, a feeding mechanism 5 located on one side of the second vertical plate 3 is fixedly installed on the fixed base 1, an opening and closing mechanism 11 located on one side of the first vertical plate 2 is installed on the fixed base 1, length rods 9 are fixedly installed on both ends of one side of the first vertical plate 2, the sides of the two length rods 9 away from the first vertical plate 2 are fixedly connected to the side opposite to the second vertical plate 3, a sliding plate 10 is slidably connected between the two length rods 9, a hot runner top mold 13 is provided on one side of the sliding plate 10, a cooling mechanism 4 is installed on the surface of the hot runner bottom mold 6, the cooling mechanism 4 comprises two heat-conducting shells 43 and two driven pulleys 46, the interiors of the two heat-conducting shells 43 are rotatably connected with stirring paddles 45, and one end of the two stirring paddles 45 extends to the outside and is fixedly connected to the insides of the two driven pulleys 46 respectively.

[0022] A double-headed motor 41 is provided on one side of the heat-conducting shell 43, and a rotating shaft 42 is fixedly installed at both output ends of the double-headed motor 41, and driving pulleys 48 are fixedly installed on the surfaces of the two rotating shafts 42. The two driving pulleys 48 are respectively connected to the two driven pulleys 46 by a belt body 47. One side of the double-headed motor 41 is fixedly connected to the side opposite to the second vertical plate 3. The double-headed motor 41 is started after being energized, and the double-headed motor 41 drives the rotating shaft 42 and the driving pulley 48 to rotate. The driving pulley 48 drives the driven pulley 46 to rotate through the belt body 47, and the driven pulley 46 drives the stirring paddle 45 to rotate. The stirring paddle 45 stirs the liquid in the heat-conducting shell 43 so that the low-temperature condensate can always be in contact with the hot runner bottom mold 6.

[0023] The opposite sides of the two heat-conducting shells 43 are fixedly connected to the two ends of the hot runner bottom mold 6 respectively. The liquid inlets and liquid outlets of the two heat-conducting shells 43 are both fitted with sealing plugs 44. Condensate for cooling is injected through the liquid inlets of the heat-conducting shells 43. The heat-conducting shells 43 are tightly attached to the two sides of the hot runner bottom mold 6 to transfer and dissipate heat to the hot runner bottom mold 6.

[0024] The feeding mechanism 5 includes a feeding rack 51 and a feeding shell 52. The top end of the feeding rack 51 is fixedly connected to the bottom end of the feeding shell 52. The inside of the feeding shell 52 is rotatably connected with a conveying screw 55. One side of the feeding shell 52 is fixedly connected with an injection hose 56 extending to the inside of the hot runner bottom mold 6. The top of the feeding shell 52 is fixedly connected with a feeding hopper 54. A stepping motor 53 for driving the conveying screw 55 to rotate is fixedly installed on the surface of the feeding shell 52. The bottom end of the feeding rack 51 is fixedly connected to the fixed base 1. The material is injected into the feeding shell 52 through the feeding hopper 54. The stepping motor 53 is started after being energized. The stepping motor 53 drives the conveying screw 55 to rotate. The conveying screw 55 conveys the material in the feeding shell 52. The material is finally injected into the hot runner bottom mold 6 from the injection hose 56 through the conveying.

[0025] The opening and closing mechanism 11 includes a screw rod 115 and a connecting block 116. One end of the screw rod 115 is rotatably connected to one end of the connecting block 116. The middle part of the screw rod 115 is threadedly connected to the first vertical plate 2. A driven gear 114 is rotatably connected to the connection between the first vertical plate 2 and the screw rod 115. The interior of the driven gear 114 is threadedly connected to the surface of the screw rod 115. A motor base 111 is provided at the bottom end of the driven gear 114. A servo motor 112 is fixedly installed at the top of the motor base 111. A driving gear 113 is fixedly installed at the output end of the servo motor 112. The outer side of the driving gear 113 is meshedly connected to the outer side of the driven gear 114. The bottom end of the motor base 111 is fixedly connected to the fixed base 1, and the side of the connecting block 116 away from the screw rod 115 is fixedly connected to the side opposite to the slide board 10. The servo motor 112 is powered on and started, and the servo motor 112 drives the driving gear 113 to rotate. The driving gear 113 contacts the driven gear 114, and the driven gear 114 rotates due to the friction force. The thread on the inner wall of the driven gear 114 matches the thread on the surface of the screw rod 115, so the screw rod 115 rotates relative to the driven gear 114 and the first vertical plate 2, and the screw rod 115 pulls the connecting block 116 from one side, and the slide board 10 slides along the length rod 9.

[0026] A first heating base 12 is fixedly installed on one side of the hot runner top mold 13, a second heating base 15 is fixedly installed on one side of the first heating base 12, the second heating base 15 is fixedly connected to the side opposite to the slide plate 10 away from the first heating base 12, a heating plate 16 is fixedly installed inside the first heating base 12 and inside the second heating base 15, heating columns 14 extending to the outside are fixedly installed at both ends of one side of the second heating base 15, slots 7 are provided at both ends of one side of the hot runner bottom mold 6, two heating columns 14 are respectively arranged corresponding to the two slots 7, the heating plate 16 heats from one side of the hot runner top mold 13, and the heating columns 14 heat from both sides of the hot runner top mold 13.

[0027] A molding groove 8 is provided on the surface of the hot runner bottom mold 6 , and the hot runner top mold 13 is arranged corresponding to the molding groove 8 . The hot runner bottom mold 6 and the molding groove 8 cooperate with each other to perform injection molding on the material.

[0028] When the embodiment of the present application is in use, the material is injected into the feed shell 52 through the feed hopper 54, the stepper motor 53 is powered on and started, the stepper motor 53 drives the conveying screw 55 to rotate, the conveying screw 55 conveys the material in the feed shell 52, and the material is finally injected into the hot runner bottom mold 6 from the injection hose 56 through the conveying, the hot runner bottom mold 6 and the molding groove 8 cooperate with each other to perform injection molding on the material, the heating plate 16 heats from one side of the hot runner top mold 13, the heating column 14 heats from both sides of the hot runner top mold 13, and then, the cooling condensate is injected through the liquid inlet of the heat-conducting shell 43, and the heat-conducting shell 43 is heated. The hot shell 43 is tightly attached to both sides of the hot runner bottom mold 6 to transfer heat to the hot runner bottom mold 6 for heat dissipation. The servo motor 112 is started after being energized, and the servo motor 112 drives the driving gear 113 to rotate. The driving gear 113 contacts the driven gear 114, and the driven gear 114 rotates due to the friction force. The thread on the inner wall of the driven gear 114 matches the thread on the surface of the screw rod 115, so the screw rod 115 rotates relative to the driven gear 114 and the first vertical plate 2, and the screw rod 115 pulls the connecting block 116 from one side, and the sliding plate 10 slides along the length rod 9 to complete the mold opening.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hot runner mold with a cooling structure, comprising a fixed base (1), characterized in that: A first vertical plate (2) is fixedly mounted on one side of the top of the fixed base (1), a second vertical plate (3) is fixedly mounted on the other side of the top of the fixed base (1), a hot runner bottom mold (6) is fixedly mounted in the middle of one side of the second vertical plate (3), a feeding mechanism (5) located on one side of the second vertical plate (3) is fixedly mounted on the fixed base (1), an opening and closing mechanism (11) located on one side of the first vertical plate (2) is mounted on the fixed base (1), length rods (9) are fixedly mounted at both ends of one side of the first vertical plate (2), and the two length rods (9) are away from the first vertical plate (2). ) are fixedly connected to the side opposite to the second vertical plate (3), a slide plate (10) is slidably connected between the two length rods (9), a hot runner top mold (13) is provided on one side of the slide plate (10), a cooling mechanism (4) is installed on the surface of the hot runner bottom mold (6), the cooling mechanism (4) comprises two heat-conducting shells (43) and two driven pulleys (46), the inside of the two heat-conducting shells (43) are rotatably connected with stirring paddles (45), one end of the two stirring paddles (45) extends to the outside and is fixedly connected to the inside of the two driven pulleys (46) respectively.

2. The hot runner mold with a cooling structure according to claim 1, characterized in that: A double-headed motor (41) is provided on one side of the heat-conducting shell (43), and a rotating shaft (42) is fixedly mounted on both output ends of the double-headed motor (41), and a driving pulley (48) is fixedly mounted on the surface of the two rotating shafts (42), and a belt body (47) is respectively connected to the two driven pulleys (46) in a transmission manner, and one side of the double-headed motor (41) is fixedly connected to a side directly opposite to the second vertical plate (3).

3. The hot runner mold with a cooling structure according to claim 1, characterized in that: The opposite sides of the two heat-conducting shells (43) are respectively fixedly connected to the two ends of the hot runner bottom mold (6), and the liquid inlets of the two heat-conducting shells (43) and the liquid outlets of the two heat-conducting shells (43) are both clamped and installed with sealing plugs (44).

4. The hot runner mold with a cooling structure according to claim 1, characterized in that: The feeding mechanism (5) comprises a feeding frame (51) and a feeding shell (52); the top end of the feeding frame (51) is fixedly connected to the bottom end of the feeding shell (52); a conveying screw (55) is rotatably connected to the inside of the feeding shell (52); one side of the feeding shell (52) is fixedly connected to an injection hose (56) extending to the inside of the hot runner bottom mold (6); the top end of the feeding shell (52) is fixedly connected to a feeding hopper (54); a stepping motor (53) for driving the conveying screw (55) to rotate is fixedly installed on the surface of the feeding shell (52); and the bottom end of the feeding frame (51) is fixedly connected to a fixed base (1).

5. The hot runner mold with a cooling structure according to claim 1, characterized in that: The opening and closing mechanism (11) comprises a screw rod (115) and a connecting block (116); one end of the screw rod (115) is rotatably connected to one end of the connecting block (116); the middle part of the screw rod (115) is threadedly connected to the first vertical plate (2); a driven gear (114) is rotatably connected to the connection between the first vertical plate (2) and the screw rod (115); the interior of the driven gear (114) is threadedly connected to the surface of the screw rod (115); and the bottom end of the driven gear (114) is provided with an electric A motor base (111) is provided, wherein a servo motor (112) is fixedly mounted on the top of the motor base (111), a driving gear (113) is fixedly mounted on the output end of the servo motor (112), the outer side of the driving gear (113) is meshedly connected with the outer side of a driven gear (114), the bottom end of the motor base (111) is fixedly connected with a fixed base (1), and a side of the connecting block (116) away from the screw rod (115) is fixedly connected with a side of the sliding plate (10) facing the sliding plate (10).

6. The hot runner mold with a cooling structure according to claim 1, characterized in that: A first heating base (12) is fixedly mounted on one side of the hot runner top mold (13), a second heating base (15) is fixedly mounted on one side of the first heating base (12), a side of the second heating base (15) away from the first heating base (12) is fixedly connected to a side directly opposite to the slide plate (10), a heating plate (16) is fixedly mounted inside the first heating base (12) and inside the second heating base (15), heating columns (14) extending to the outside are fixedly mounted at both ends of one side of the second heating base (15), and slots (7) are provided at both ends of one side of the hot runner bottom mold (6), and the two heating columns (14) are respectively arranged corresponding to the two slots (7).

7. The hot runner mold with a cooling structure according to claim 1, characterized in that: A molding groove (8) is provided on the surface of the hot runner bottom mold (6), and the hot runner top mold (13) is arranged corresponding to the molding groove (8).

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