A heat dissipation structure of hot runner mold

Abstract

The present invention relates to the field of hot runner molds, specifically a heat dissipation structure of a hot runner mold, including a lower mold block arranged on the upper side of a bottom plate, and also including a carrier plate located on the lower side of the bottom plate, a ventilation duct is provided through the middle position of the carrier plate, an intake fan and an exhaust fan are respectively fixedly connected to the inside of the ventilation duct near both ends, an upper mold block is arranged on the upper side of the lower mold block, a top plate is fixedly connected to the upper side of the upper mold block, a collecting tank body is arranged on the lower side of the carrier plate, and a first support plate and a second support plate are respectively fixedly connected to the middle positions of both sides of the collecting tank body. The present invention realizes the function of rapid cooling of the hot runner mold, significantly improves the heat dissipation effect and efficiency of the hot runner mold, and can make full use of the heat on the hot runner mold to reduce the consumption of external energy, which is helpful to reduce production costs, and also realizes the step-by-step disassembly function of the heat dissipation structure to repair and replace its faulty components.

Description

Technical Field

[0001] The invention relates to the field of hot runner moulds, in particular to a heat dissipation structure of a hot runner mould. Background Art

[0002] Hot runner mold is an injection mold system that uses a heating device to transport molten plastic from the injection molding machine nozzle directly to the inside of the mold cavity to form a mold technology for the product. Hot runner molds avoid material cooling and waste generation in traditional cold runners by setting up a hot runner system in the mold, thereby improving production efficiency and product quality. Hot runner molds are widely used in industries such as automobiles, electronics, packaging, and medical. The heat dissipation structure of hot runner molds refers to a cooling and heat dissipation system designed to ensure that the mold maintains an appropriate temperature under high temperature working conditions. The main function of the heat dissipation structure is to avoid local overheating of the mold and ensure product quality, production efficiency, and mold life.

[0003] The patent with announcement number CN220180075U discloses a hot runner mold heat dissipation structure, including a base, a mold is arranged on the top of the base, a mold cover is arranged on the top of the mold, and a hot runner is arranged on the mold cover; an installation groove is arranged on the inner periphery of the mold, and a spiral cooling pipe is arranged on the inner side of the installation groove; a cooling water tank filled with coolant is arranged at one end of the top of the base, a water pump is arranged at the lower end of one side of the cooling water tank, a first pipe is arranged at the water outlet end of the water pump, and a second pipe is arranged on one side of the upper end of the cooling water tank. The water cooling of the mold can be achieved by the mutual cooperation of the cooling water tank, the water pump, the first pipe, the spiral cooling pipe, the second pipe, the round copper pipe, and the second fan, and the reflux coolant can be timely cooled down for subsequent recycling. However, when the existing hot runner mold heat dissipation structure is used, it can usually only use one of water cooling or air cooling to dissipate the heat of the hot runner mold, and the heat dissipation efficiency and heat dissipation effect are still insufficient. For this reason, a hot runner mold heat dissipation structure is proposed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a hot runner mold heat dissipation structure, which solves the technical problem that the existing hot runner mold heat dissipation structure proposed in the above background technology can usually only use water cooling or air cooling to dissipate the heat of the hot runner mold when in use, and the heat dissipation efficiency and heat dissipation effect are still insufficient.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A hot runner mold heat dissipation structure, comprising a lower mold block arranged on the upper side of a bottom plate, and a carrier plate located on the lower side of the bottom plate, a ventilation duct is provided through the middle position of the carrier plate, an intake fan and an exhaust fan are respectively fixedly connected to the inside of the ventilation duct near both ends, an upper mold block is arranged on the upper side of the lower mold block, and a top plate is fixedly connected to the upper side of the upper mold block;

[0007] A collecting tank body is provided on the lower side of the carrier plate, and a first support plate and a second support plate are fixedly connected to the middle positions of both sides of the collecting tank body, respectively; a booster pump and a refrigerator are fixedly installed on the upper sides of the first support plate and the second support plate, respectively; a liquid return pipe is fixedly connected to one side of the refrigerator, and a liquid extraction pipe and a liquid discharge pipe are connected to the inlet and outlet of the booster pump, respectively; a liquid separation pipe is fixedly connected to the upper end of the liquid extraction pipe, and a plurality of groups of heat exchange tubes are fixedly connected to the liquid separation pipe, and a plurality of groups of heat exchange tubes are fixedly connected to the ends of the heat exchange tubes;

[0008] A main heat column is provided through the middle position of several groups of heat exchange tubes, two groups of first branch heat-conducting rods are fixedly connected to the outer side of the main heat-conducting column near the top, several groups of first ring fins are fixedly sleeved on the outer side of the first branch heat-conducting rods, two groups of second branch heat-conducting rods are fixedly connected to the outer side of the main heat-conducting column near the middle position, several groups of second ring fins are fixedly sleeved on the outer side of the second branch heat-conducting rods, the bottom end of the main heat-conducting column is fixedly connected to the bottom heat-conducting rod, and several groups of third ring fins are fixedly sleeved on the outer side of the bottom heat-conducting rod.

[0009] As a further solution of the present invention, a dust screen is provided in the middle position of one side of the carrier plate, and the dust screen is located on the outside of the air intake fan, a plurality of groups of circular through holes are evenly spaced through the middle position of the upper surface of the carrier plate, and the inner diameter of the circular through holes is the same as the outer diameter of the third ring fin, a plurality of groups of bottom heat-conducting rods are respectively located on the inner sides of a plurality of groups of circular through holes, a plurality of groups of third ring fins are all located inside the ventilation duct, and a plurality of groups of third ring fins are evenly spaced and distributed on the bottom heat-conducting rod.

[0010] As a further solution of the present invention, a plurality of groups of built-in grooves are formed at equal intervals on the lower surface of the lower mold block, a plurality of groups of the first branch heat-conducting rods are respectively located inside the plurality of groups of built-in grooves, a plurality of groups of the first ring fins are equally spaced on the first branch heat-conducting rods, a plurality of groups of the second branch heat-conducting rods are respectively located inside a plurality of groups of heat exchange tubes, a plurality of groups of the second ring fins are equally spaced on the second branch heat-conducting rods, a plurality of groups of tube through holes are formed at equal intervals on the bottom plate, and a plurality of groups of heat exchange tubes are respectively located on the inner sides of the plurality of tube through holes.

[0011] As a further solution of the present invention, the shape of the liquid extraction pipe is L-shaped, the lower ends of the return pipe and the liquid extraction pipe are both located inside the collecting tank body, a number of groups of heat exchange tubes are evenly spaced between the liquid distribution pipe and the liquid collecting pipe, the liquid distribution pipe and the liquid collecting pipe are symmetrically arranged on both sides of the bottom plate, and the side shape of the collecting tank body is U-shaped.

[0012] As a further solution of the present invention, a first return pipe is fixedly connected to the middle position of the upper side of the collecting pipe, a spiral pipe is fixedly connected to the upper end of the first return pipe, and a second return pipe is fixedly connected to the other end of the spiral pipe, an insulating cover shell is arranged on the upper side of the top plate, mounting plates are fixedly connected to both sides of the insulating cover shell, mounting rods are fixedly connected to the upper surface of the top plate near both sides, first spiral rings are arranged on the upper sides of the two groups of mounting plates, and a hot runner body is penetrated and arranged in the middle position of the upper surface of the top plate;

[0013] An internally threaded ring plate is fixedly connected to one side of the carrier plate close to the exhaust fan, an externally threaded shell plate is threadedly connected to the inner side of the internally threaded ring plate, a plug-in tube is fixedly connected to one side of the externally threaded shell plate, an air inlet pipe is clamped on the outer side of the plug-in tube, an air ventilation channel is opened through the top plate, and an air outlet pipe is fixedly connected to the middle position of the other side of the top plate.

[0014] As a further solution of the present invention, the first return pipe and the second return pipe are both designed as hoses, the spiral pipe is located inside the insulation cover shell, and the spiral pipe is located outside the hot runner body, the two groups of mounting rods pass through the two groups of mounting plates and are threadedly connected to the two groups of first screw rings respectively, and a third clamping ring is fixedly connected to the side of the top plate away from the air outlet pipe, and the third clamping ring is clamped with the air inlet pipe.

[0015] As a further solution of the present invention, a connecting slide rod is fixedly connected to the middle position of the upper surface of the collecting tank body, a connecting slide groove is opened in the middle position of the lower surface of the carrier plate, fixed shaft rods are fixedly connected to the middle positions of both sides of the collecting tank body, and movable baffles are rotatably sleeved on the outer sides of the two groups of fixed shaft rods, and the booster pump and the refrigerator are respectively fixedly connected with a first clamping ring and a second clamping ring;

[0016] Both sides of the carrier plate are fixedly connected with connecting vertical plates near the corners, both sides of the bottom plate are fixedly connected with external connecting plates near the corners, four groups of external connecting plates are penetrated with plugs, both sides of the bottom plate are provided with slots near the corners, the upper surface of the bottom plate is penetrated with connecting side holes near the middle of both sides, and the upper surface of the carrier plate is fixedly connected with connecting side rods near the middle of both sides;

[0017] The upper surface of the bottom plate is fixedly connected to the limiting vertical rods near the corners, the corners of the upper mold block and the lower mold block are respectively fixedly connected with four groups of second limiting plates and four groups of first limiting plates, and the four groups of first limiting plates and the four groups of second limiting plates are penetrated by limiting sliding holes, the upper surface of the lower mold block is fixedly connected to the plug-in columns near the corners, and the lower surface of the upper mold block is fixedly connected to the plug-in grooves near the corners.

[0018] As a further solution of the present invention, the connecting slide rod is connected to the carrier plate through a connecting slide groove, and the cross-sectional shape of the connecting slide rod is T-shaped, the first clamping ring is clamped with the drain pipe, the second clamping ring is clamped with the second return pipe, the four groups of connecting vertical plates are respectively connected to the four groups of external connecting plates, and the plugs pass through the external connecting plates and the connecting vertical plates and fit into the slots, and the two groups of connecting side rods are respectively fitted with the two groups of connecting side holes.

[0019] As a further solution of the present invention, the four groups of the first limit plates and the four groups of the second limit plates are respectively connected to the four groups of limit vertical rods through limit sliding holes, the top ends of the four groups of the limit vertical rods are threaded with second screw rings, and the four groups of second screw rings are all located on the upper side of the top plate, and the four groups of the plug-in columns are respectively matched with the four groups of plug-in grooves.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The heat on the lower mold block is transferred to the main heat column through the first branch heat-conducting rod and several groups of first ring fins, and then a part of the heat on the main heat column is introduced to several groups of second ring fins through the second branch heat-conducting rod. At the same time, the booster pump on the upper side of the first support plate is started, and the coolant in the collection tank is pumped into the inside of the liquid distribution pipe through the suction pipe and the discharge pipe. Then, the heat of several groups of second ring fins is taken away by the coolant through several groups of heat exchange tubes, and the heat on the main heat column is transferred to the bottom heat-conducting rod and several groups of third ring fins, and the intake fan and exhaust fan in the ventilation duct are started to take away the heat on several groups of third ring fins by air, thereby realizing the rapid cooling function of the hot runner mold and significantly improving the heat dissipation effect and efficiency of the hot runner mold.

[0022] 2. The high-temperature liquid is introduced into the interior of the spiral tube through the cooperation of the collecting pipe and the first reflux pipe, and the hot runner body is heated with the cooperation of the heat-insulating cover shell. Then, the hot air is introduced into the interior of the ventilation channel through the external threaded shell plate and the plug-in tube in cooperation with the air inlet pipe to further heat the hot runner body, and then the gas is discharged through the air outlet pipe, which can make full use of the heat on the hot runner mold to reduce the consumption of external energy and help reduce production costs.

[0023] 3. First, the drain pipe and the second return pipe are separated from the booster pump and the refrigerator respectively through the first clamping ring and the second clamping ring, and then the movable baffle is rotated away from the end of the connecting slide rod through the fixed shaft rod, and then the collecting trough body is separated from the bearing frame plate through the cooperation of the connecting slide rod and the connecting slide groove, and then the air intake pipe is separated from the bearing frame plate through the threaded connection between the internal threaded ring plate and the external threaded shell plate, and then the four groups of plugs are respectively moved out from the inner side of the four groups of slots, and the bearing frame plate is separated from the bottom plate through the four groups of connecting vertical plates and four groups of external connecting plates in cooperation with two groups of connecting side rods and two groups of connecting side holes, and then the four groups of second screw rings are respectively removed from the four groups of limiting vertical rods, and the lower mold block is separated from the bottom plate through the first limiting plate and the second limiting plate in cooperation with the limiting slide hole, thereby realizing the step-by-step disassembly function of the heat dissipation structure, so as to overhaul and replace its faulty components. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 It is a schematic diagram of the connection structure of the bottom plate in the present invention.

[0026] Figure 3 It is a schematic diagram of the connection structure of the main heat-generating column in the present invention.

[0027] Figure 4 It is a schematic diagram of the connection structure of the heat exchange tubes in the present invention.

[0028] Figure 5 It is a schematic diagram of the connection structure of the collecting tank body in the present invention.

[0029] Figure 6 It is a schematic diagram of the connection structure of the carrier plate in the present invention.

[0030] Figure 7 It is a schematic diagram of the connection structure between the top plate and the bearing frame plate in the present invention.

[0031] Figure 8 It is a schematic diagram of the connection structure of the top plate in the present invention.

[0032] Fig. 9 It is a schematic diagram of the connection structure between the bottom plate and the top plate in the present invention.

[0033] Fig.10 It is a schematic diagram of the connection structure between the upper mold block and the lower mold block in the present invention.

[0034] In the figure: 1, bottom plate; 2, lower mold block; 3, top plate; 4, upper mold block; 5, bearing frame plate; 6, collecting tank body; 7, first support plate; 8, booster pump; 9, liquid extraction pipe; 10, liquid discharge pipe; 11, liquid distribution pipe; 12, heat exchange pipe; 13, liquid collection pipe; 14, first return pipe; 15, spiral pipe; 16, second return pipe; 17, refrigerator; 18, liquid return pipe; 19, second support plate; 20, main heat column; 21, first branch heat-conducting rod; 22, first ring fin; 23, second branch heat-conducting rod; 24, second ring fin; 25, bottom heat-conducting rod; 26, third ring fin; 27, ventilation duct; 28, intake fan; 29, exhaust fan; 30, dust screen; 31, round through hole; 32, through-tube hole; 33. Built-in groove; 34. Internally threaded ring plate; 35. Externally threaded shell plate; 36. Plug-in tube; 37. Inlet pipe; 38. Ventilation channel; 39. Exhaust pipe; 40. Hot runner body; 41. Insulating cover shell; 42. Mounting plate; 43. Mounting rod; 44. First screw ring; 45. Third clamping ring; 46. Connecting slide rod; 47. Connecting slide groove; 48. Fixed shaft rod; 49. Movable baffle; 50. First clamping ring; 51. Second clamping ring; 52. Connecting vertical plate; 53. External connecting plate; 54. Plug; 55. Slot; 56. Connecting side rod; 57. Connecting side hole; 58. Limiting vertical rod; 59. First limiting plate; 60. Second limiting plate; 61. Limiting slide hole; 62. Second screw ring; 63. Plug-in column; 64. Plug-in groove. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] See also Figures 1 to 10 The present invention provides a hot runner mold heat dissipation structure, and the technical solution is as follows:

[0038] A hot runner mold heat dissipation structure, including a lower mold block 2 arranged on the upper side of a bottom plate 1, and also including a carrier plate 5 located on the lower side of the bottom plate 1, a ventilation duct 27 is opened through the middle position of the carrier plate 5, and an intake fan 28 and an exhaust fan 29 are respectively fixedly connected near the two ends of the interior of the ventilation duct 27, an upper mold block 4 is arranged on the upper side of the lower mold block 2, a top plate 3 is fixedly connected to the upper side of the upper mold block 4, a collecting tank body 6 is arranged on the lower side of the carrier plate 5, a first support plate 7 and a second support plate 19 are respectively fixedly connected to the middle positions of the two sides of the collecting tank body 6, a booster pump 8 and a refrigerator 17 are respectively fixedly installed on the upper sides of the first support plate 7 and the second support plate 19, a liquid return pipe 18 is fixedly connected to one side of the refrigerator 17, and the inlet and outlet of the booster pump 8 are respectively connected to the liquid extraction pipe 9 and a discharge pipe 10, the upper end of the liquid extraction pipe 9 is fixedly connected with a liquid distribution pipe 11, and a plurality of groups of heat exchange tubes 12 are fixedly connected to the liquid distribution pipe 11, and the ends of the plurality of groups of heat exchange tubes 12 are fixedly connected with a liquid collecting pipe 13, and the middle positions of the plurality of groups of heat exchange tubes 12 are all penetrated by a main heat column 20, and the outer side of the main heat column 20 is fastened with two groups of first branch heat-conducting rods 21 near the top, and the outer side of the first branch heat-conducting rods 21 is fastened with a plurality of groups of first ring fins 22, and the outer side of the main heat column 20 is fastened with two groups of second branch heat-conducting rods 23 near the middle position, and the outer side of the second branch heat-conducting rods 23 is fastened with a plurality of groups of second ring fins 24, and the bottom end of the main heat column 20 is fixedly connected with a bottom heat-conducting rod 25, and the outer side of the bottom heat-conducting rod 25 is fastened with a plurality of groups of third ring fins 26.

[0039] As an embodiment of the present invention, refer to Figure 1-Figure 6 A dust screen 30 is provided in the middle position of one side of the carrier plate 5, and the dust screen 30 is located on the outside of the air intake fan 28. A plurality of groups of circular through holes 31 are evenly spaced through the middle position of the upper surface of the carrier plate 5, and the inner diameter of the circular through hole 31 is the same as the outer diameter of the third ring fin 26. A plurality of groups of bottom heat-conducting rods 25 are respectively located on the inner sides of the plurality of groups of circular through holes 31, a plurality of groups of third ring fins 26 are all located inside the ventilation duct 27, and a plurality of groups of third ring fins 26 are evenly spaced and distributed on the bottom heat-conducting rod 25.

[0040] A plurality of groups of built-in grooves 33 are evenly spaced on the lower surface of the lower mold block 2, a plurality of groups of first branch heat-conducting rods 21 are respectively located inside the plurality of groups of built-in grooves 33, a plurality of groups of first annular fins 22 are evenly spaced on the first branch heat-conducting rods 21, a plurality of groups of second branch heat-conducting rods 23 are respectively located inside the plurality of groups of heat exchange tubes 12, a plurality of groups of second annular fins 24 are evenly spaced on the second branch heat-conducting rods 23, a plurality of groups of through-tube holes 32 are evenly spaced through the bottom plate 1, and a plurality of groups of heat exchange tubes 12 are respectively located on the inner sides of the plurality of through-tube holes 32.

[0041] The shape of the liquid extraction pipe 9 is L-shaped, the lower ends of the return pipe 18 and the liquid extraction pipe 9 are both located inside the collecting tank body 6, and a plurality of groups of heat exchange tubes 12 are evenly spaced and distributed between the liquid distribution pipe 11 and the liquid collection pipe 13. The liquid distribution pipe 11 and the liquid collection pipe 13 are symmetrically arranged on both sides of the bottom plate 1, and the side shape of the collecting tank body 6 is U-shaped.

[0042] Specifically, the heat on the lower mold block 2 is transferred to the main heat column 20 through the first branch heat-conducting rod 21 and several groups of first ring fins 22, and then a part of the heat on the main heat column 20 is introduced into several groups of second ring fins 24 through the second branch heat-conducting rod 23. At the same time, the booster pump 8 on the upper side of the first support plate 7 is started, and the coolant in the collection tank body 6 is pumped into the interior of the liquid distribution tube 11 through the suction pipe 9 and the discharge pipe 10, and then the heat of several groups of second ring fins 24 is taken away by the coolant through several groups of heat exchange tubes 12, and the heat on the main heat column 20 will be transferred to the bottom heat-conducting rod 25 and several groups of third ring fins 26, and the intake fan 28 and the exhaust fan 29 in the ventilation duct 27 are started to take away the heat on several groups of third ring fins 26 by air, thereby realizing the rapid cooling function of the hot runner mold and significantly improving the heat dissipation effect and efficiency of the hot runner mold.

[0043] As an embodiment of the present invention, refer to Figure 4 , Figure 7 , Figure 8 A first return pipe 14 is fixedly connected to the middle position of the upper side of the collecting pipe 13, a spiral pipe 15 is fixedly connected to the upper end of the first return pipe 14, and a second return pipe 16 is fixedly connected to the other end of the spiral pipe 15. An insulating cover shell 41 is arranged on the upper side of the top plate 3, and mounting plates 42 are fixedly connected to both sides of the insulating cover shell 41. Mounting rods 43 are fixedly connected to the upper surface of the top plate 3 near both sides, and first screw rings 44 are arranged on the upper sides of the two sets of mounting plates 42. A hot runner body 40 is penetrated through the middle position of the upper surface of the top plate 3, an internal threaded ring plate 34 is fixedly connected to the side of the carrier plate 5 close to the exhaust fan 29, an external threaded shell plate 35 is threadedly connected to the inner side of the internal threaded ring plate 34, a plug-in pipe 36 is fixedly connected to one side of the external threaded shell plate 35, an air inlet pipe 37 is clamped on the outer side of the plug-in pipe 36, a ventilation channel 38 is penetrated through the top plate 3, and an air outlet pipe 39 is fixedly connected to the middle position of the other side of the top plate 3.

[0044] The first return pipe 14 and the second return pipe 16 are both designed as hoses, the spiral pipe 15 is located inside the insulating cover shell 41, and the spiral pipe 15 is located outside the hot runner body 40, two groups of mounting rods 43 pass through two groups of mounting plates 42 and are threadedly connected to two groups of first screw rings 44 respectively, and a third clamping ring 45 is fixedly connected to the side of the top plate 3 away from the air outlet pipe 39, and the third clamping ring 45 is clamped with the air inlet pipe 37.

[0045] Specifically, the high-temperature liquid is introduced into the interior of the spiral tube 15 through the cooperation of the collecting pipe 13 and the first return pipe 14, and the hot runner body 40 is heated with the cooperation of the heat-insulating cover shell 41. Then, the hot air is introduced into the interior of the ventilation channel 38 through the external threaded shell plate 35 and the plug-in tube 36 in cooperation with the air inlet pipe 37 to further heat the hot runner body 40, and then the gas is discharged through the air outlet pipe 39, which can make full use of the heat on the hot runner mold to reduce the consumption of external energy and help reduce production costs.

[0046] As an embodiment of the present invention, refer to Figure 1 , Fig. 9 , Fig.10 A connecting slide bar 46 is fixedly connected to the middle position of the upper surface of the collecting tank body 6, a connecting slide groove 47 is opened in the middle position of the lower surface of the carrier plate 5, fixed shaft rods 48 are fixedly connected to the middle positions of both sides of the collecting tank body 6, and movable baffles 49 are rotatably sleeved on the outer sides of the two sets of fixed shaft rods 48. The booster pump 8 and the refrigerator 17 are respectively fixedly connected with a first clamping ring 50 and a second clamping ring 51. The two sides of the carrier plate 5 are fixedly connected to the corner positions with connecting vertical plates 52, and the two sides of the bottom plate 1 are fixedly connected to the corner positions with external connecting plates 53. The four sets of external connecting plates 53 are penetrated with plugs 54. The two sides of the bottom plate 1 are opened with plugs near the corners. Slot 55, connecting side holes 57 are penetrated and opened on the upper surface of the bottom plate 1 near the middle positions on both sides, connecting side rods 56 are fixedly connected to the upper surface of the carrier plate 5 near the middle positions on both sides, and limiting vertical rods 58 are fixedly connected to the upper surface of the bottom plate 1 near the corner positions, and four groups of second limiting plates 60 and four groups of first limiting plates 59 are fixedly connected to the corners of the upper mold block 4 and the lower mold block 2 respectively, and limiting sliding holes 61 are penetrated and opened on the four groups of first limiting plates 59 and the four groups of second limiting plates 60, the upper surface of the lower mold block 2 is fixedly connected with plug-in columns 63 near the corner positions, and the lower surface of the upper mold block 4 is fixedly connected with plug-in slots 64 near the corner positions.

[0047] The connecting slide rod 46 is connected to the carrier plate 5 through the connecting slide groove 47, and the cross-sectional shape of the connecting slide rod 46 is T-shaped. The first clamping ring 50 is clamped with the discharge pipe 10, and the second clamping ring 51 is clamped with the second return pipe 16. The four groups of connecting vertical plates 52 are respectively connected to the four groups of external connecting plates 53, and the plugs 54 pass through the external connecting plates 53 and the connecting vertical plates 52 and fit with the slots 55. The two groups of connecting side rods 56 are respectively fitted with the two groups of connecting side holes 57.

[0048] The four groups of first limit plates 59 and the four groups of second limit plates 60 are respectively connected to the four groups of limit vertical rods 58 through the limit sliding holes 61. The top ends of the four groups of limit vertical rods 58 are all threadedly connected with second screw rings 62, and the four groups of second screw rings 62 are all located on the upper side of the top plate 3. The four groups of plug-in columns 63 are respectively matched with the four groups of plug-in grooves 64.

[0049] Specifically, the first clamp ring 50 and the second clamp ring 51 are used to separate the discharge pipe 10 and the second return pipe 16 from the booster pump 8 and the refrigerator 17 respectively, and then the movable baffle 49 is rotated away from the end of the connecting slide rod 46 by the fixed shaft rod 48, and then the collecting tank body 6 is separated from the carrier plate 5 by the cooperation of the connecting slide rod 46 and the connecting slide groove 47, and then the inlet pipe 37 is separated from the carrier plate 5 by the threaded connection between the internal thread ring plate 34 and the external thread shell plate 35, and then the four sets of plugs 5 are connected. 4 are respectively moved out from the inner sides of the four groups of slots 55, and the support frame plate 5 is separated from the bottom plate 1 through the four groups of connecting vertical plates 52 and the four groups of external connecting plates 53, in cooperation with the two groups of connecting side rods 56 and the two groups of connecting side holes 57. Then, the four groups of second screw rings 62 are respectively removed from the four groups of limiting vertical rods 58, and the lower mold block 2 is separated from the bottom plate 1 through the first limiting plate 59 and the second limiting plate 60 in cooperation with the limiting sliding holes 61, thereby realizing the step-by-step disassembly function of the heat dissipation structure, so as to overhaul and replace its faulty parts.

[0050] Working principle: First, the staff transfers the heat on the lower mold block 2 to the main heat column 20 through the first branch heat-conducting rods 21 and the first ring fins 22 in the built-in grooves 33, and then transfers part of the heat on the main heat column 20 to the second ring fins 24 through the second branch heat-conducting rods 23. At the same time, the booster pump 8 on the upper side of the first support plate 7 is started, and the coolant in the collection tank body 6 is pumped into the inside of the liquid distribution pipe 11 through the liquid extraction pipe 9 and the liquid discharge pipe 10, and then the heat of the second ring fins 24 is taken away by the coolant through the heat exchange pipes 12, and the heat on the main heat column 20 is transferred to the bottom heat-conducting rods 25 and the third ring fins. 26, and start the intake fan 28 and the exhaust fan 29 in the ventilation duct 27, so that the heat on the several groups of third ring fins 26 is taken away by the air with the cooperation of the dust screen 30, so as to realize the rapid cooling function of the hot runner mold, and significantly improve the heat dissipation effect and efficiency of the hot runner mold. Secondly, the first spiral ring 44 is used to install the heat insulation cover shell 41 through the mounting plate 42 and the mounting rod 43, and then the high-temperature liquid is introduced into the interior of the spiral tube 15 through the cooperation of the collecting pipe 13 and the first return pipe 14, and the hot runner body 40 is heated with the cooperation of the heat insulation cover shell 41, and then the liquid enters the interior of the collecting tank body 6 through the return pipe 18 and the second return pipe 16. Then, the hot air is introduced into the interior of the ventilation channel 38 through the external threaded shell plate 35 and the plug tube 36 in cooperation with the air inlet pipe 37 to further heat the hot runner body 40, and then the gas is discharged through the air outlet pipe 39, which can make full use of the heat on the hot runner mold, so as to reduce the consumption of external energy and help reduce production costs. Finally, the first clamp ring 50 and the second clamp ring 51 are used to separate the drain pipe 10 and the second return pipe 16 from the booster pump 8 and the refrigerator 17 respectively, and then the movable baffle 49 is rotated away from the end of the connecting slide rod 46 through the fixed shaft rod 48, and then the collecting tank body 6 and the carrier plate are connected by the cooperation of the connecting slide rod 46 and the connecting slide groove 47. 5, then the air intake pipe 37 is separated from the carrier plate 5 through the threaded connection between the internal thread ring plate 34 and the external thread shell plate 35, and then the four groups of plugs 54 are respectively moved out from the inner sides of the four groups of slots 55, and the carrier plate 5 is separated from the bottom plate 1 through the four groups of connecting vertical plates 52 and the four groups of external connecting plates 53 in cooperation with the two groups of connecting side rods 56 and the two groups of connecting side holes 57, and then the four groups of second screw rings 62 are respectively removed from the four groups of limiting vertical rods 58, and the lower mold block 2 is separated from the bottom plate 1 through the first limiting plate 59 and the second limiting plate 60 in cooperation with the limiting sliding hole 61, thereby realizing the step-by-step disassembly function of the heat dissipation structure, so that the faulty parts can be inspected and replaced to complete the operation.

[0051] In the description of the present invention, it is necessary to understand that the terms "center", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hot runner mold heat dissipation structure, comprising a lower mold block (2) arranged on the upper side of a bottom plate (1), characterized in that: It also includes a carrier plate (5) located at the lower side of the bottom plate (1), a ventilation duct (27) running through the middle of the carrier plate (5), an intake fan (28) and an exhaust fan (29) being fixedly connected to the inside of the ventilation duct (27) near both ends, an upper mold block (4) being arranged on the upper side of the lower mold block (2), and a top plate (3) being fixedly connected to the upper side of the upper mold block (4); A collecting tank body (6) is provided on the lower side of the carrier plate (5); a first support plate (7) and a second support plate (19) are fixedly connected to the middle positions of both sides of the collecting tank body (6); a booster pump (8) and a refrigerator (17) are fixedly installed on the upper sides of the first support plate (7) and the second support plate (19); a liquid return pipe (18) is fixedly connected to one side of the refrigerator (17); an inlet and outlet of the booster pump (8) are connected to a liquid extraction pipe (9) and a liquid discharge pipe (10), respectively; A liquid dispensing pipe (11) is fixedly connected to the upper end, a plurality of groups of heat exchange tubes (12) are fixedly connected to the liquid dispensing pipe (11), the ends of the plurality of groups of heat exchange tubes (12) are fixedly connected to a liquid collecting pipe (13), a first return pipe (14) is fixedly connected to the middle position of the upper side of the liquid collecting pipe (13), a spiral pipe (15) is fixedly connected to the upper end of the first return pipe (14), and a second return pipe (16) is fixedly connected to the other end of the spiral pipe (15), and a heat insulating cover shell (41) is provided on the upper side of the top plate (3); A main heat-exchange column (20) is provided through the middle positions of the plurality of groups of heat exchange tubes (12); two groups of first branch heat-conducting rods (21) are fixedly connected to the outside of the main heat-exchange column (20) near the top; a plurality of first ring fins (22) are fixedly sleeved on the outside of the first branch heat-conducting rods (21); two groups of second branch heat-conducting rods (23) are fixedly connected to the outside of the main heat-exchange column (20) near the middle position; a plurality of second ring fins (24) are fixedly sleeved on the outside of the second branch heat-conducting rods (23); a bottom heat-conducting rod (25) is fixedly connected to the bottom end of the main heat-exchange column (20); a plurality of third ring fins (26) are fixedly sleeved on the outside of the bottom heat-conducting rod (25); A dust screen (30) is provided in the middle of one side of the carrier plate (5), and the dust screen (30) is located on the outside of the air intake fan (28); a plurality of groups of circular through holes (31) are evenly spaced through the middle of the upper surface of the carrier plate (5), and the inner diameter of the circular through holes (31) is the same as the outer diameter of the third ring fin (26); a plurality of groups of bottom heat-conducting rods (25) are respectively located on the inner sides of the plurality of groups of circular through holes (31); a plurality of groups of third ring fins (26) are all located inside the ventilation duct (27); and a plurality of groups of third ring fins (26) are evenly spaced and distributed on the bottom heat-conducting rod (25); The lower surface of the lower mold block (2) is provided with a plurality of groups of built-in grooves (33) at equal intervals, a plurality of groups of the first branch heat-conducting rods (21) are respectively located inside the plurality of groups of built-in grooves (33), a plurality of groups of the first ring fins (22) are distributed on the first branch heat-conducting rods (21) at equal intervals, a plurality of groups of the second branch heat-conducting rods (23) are respectively located inside a plurality of groups of heat exchange tubes (12), a plurality of groups of the second ring fins (24) are distributed on the second branch heat-conducting rods (23) at equal intervals, and a plurality of groups of tube penetration holes (32) are provided through the bottom plate (1) at equal intervals, and a plurality of groups of heat exchange tubes (12) are respectively located on the inner sides of the plurality of tube penetration holes (32).

2. A hot runner mold heat dissipation structure according to claim 1, characterized in that: The liquid extraction pipe (9) is L-shaped, the lower ends of the liquid return pipe (18) and the liquid extraction pipe (9) are both located inside the collecting tank body (6), a plurality of groups of heat exchange tubes (12) are evenly spaced and distributed between the liquid distribution pipe (11) and the liquid collection pipe (13), the liquid distribution pipe (11) and the liquid collection pipe (13) are symmetrically arranged on both sides of the bottom plate (1), and the side surface of the collecting tank body (6) is U-shaped.

3. A hot runner mold heat dissipation structure according to claim 1, characterized in that: Both sides of the heat-insulating cover shell (41) are fixedly connected with mounting plates (42), the upper surface of the top plate (3) is fixedly connected with mounting rods (43) near both sides, the upper sides of the two groups of mounting plates (42) are provided with first screw rings (44), and a hot runner body (40) is provided through the middle of the upper surface of the top plate (3); An internally threaded ring plate (34) is fixedly connected to one side of the carrier plate (5) close to the exhaust fan (29); an externally threaded shell plate (35) is threadedly connected to the inner side of the internally threaded ring plate (34); a plug-in tube (36) is fixedly connected to one side of the externally threaded shell plate (35); an air inlet pipe (37) is clamped to the outer side of the plug-in tube (36); a ventilation channel (38) is provided through the top plate (3); and an air outlet pipe (39) is fixedly connected to the middle position of the other side of the top plate (3).

4. A hot runner mold heat dissipation structure according to claim 3, characterized in that: The first return pipe (14) and the second return pipe (16) are both designed as hoses, the spiral pipe (15) is located inside the heat-insulating cover shell (41), and the spiral pipe (15) is located outside the hot runner body (40), the two groups of mounting rods (43) respectively pass through the two groups of mounting plates (42) and are threadedly connected to the two groups of first screw rings (44), and a third clamping ring (45) is fixedly connected to a side of the top plate (3) away from the air outlet pipe (39), and the third clamping ring (45) is clamped to the air inlet pipe (37).

5. The hot runner mold heat dissipation structure according to claim 3, characterized in that: A connecting slide bar (46) is fixedly connected to the middle position of the upper surface of the collecting tank body (6), a connecting slide groove (47) is provided at the middle position of the lower surface of the carrier plate (5), fixed shaft rods (48) are fixedly connected to the middle positions of both sides of the collecting tank body (6), and movable baffles (49) are rotatably sleeved on the outer sides of the two groups of fixed shaft rods (48), and a first clamping ring (50) and a second clamping ring (51) are fixedly connected to the booster pump (8) and the refrigerator (17), respectively; Both sides of the carrier plate (5) are fixedly connected with connecting vertical plates (52) near the corners, both sides of the bottom plate (1) are fixedly connected with external connecting plates (53) near the corners, four groups of external connecting plates (53) are penetrated with plugs (54), both sides of the bottom plate (1) are provided with slots (55) near the corners, the upper surface of the bottom plate (1) is penetrated with connecting side holes (57) near the middle of both sides, and the upper surface of the carrier plate (5) is fixedly connected with connecting side rods (56) near the middle of both sides; The upper surface of the bottom plate (1) is fixedly connected to the edge corners with vertical limit rods (58); the edge corners of the upper mold block (4) and the lower mold block (2) are respectively fixedly connected to four groups of second limit plates (60) and four groups of first limit plates (59); the four groups of first limit plates (59) and the four groups of second limit plates (60) are penetrated by limit sliding holes (61); the upper surface of the lower mold block (2) is fixedly connected to the edge corners with plug-in columns (63); the lower surface of the upper mold block (4) is fixedly connected to the edge corners with plug-in grooves (64).

6. A hot runner mold heat dissipation structure according to claim 5, characterized in that: The connecting slide bar (46) is connected to the carrier plate (5) via a connecting slide groove (47), and the cross-sectional shape of the connecting slide bar (46) is T-shaped. The first clamping ring (50) is clamped with the discharge pipe (10), and the second clamping ring (51) is clamped with the second return pipe (16). The four groups of connecting vertical plates (52) are respectively connected to the four groups of external connecting plates (53), and the plugs (54) pass through the external connecting plates (53) and the connecting vertical plates (52) and fit into the slots (55). The two groups of connecting side rods (56) are respectively fitted into the two groups of connecting side holes (57).

7. The hot runner mold heat dissipation structure according to claim 5, characterized in that: The four groups of the first limiting plates (59) and the four groups of the second limiting plates (60) are respectively connected to the four groups of limiting vertical rods (58) through limiting sliding holes (61); the top ends of the four groups of limiting vertical rods (58) are all threadedly connected with second screw rings (62); the four groups of second screw rings (62) are all located on the upper side of the top plate (3); and the four groups of plug-in columns (63) are respectively matched with the four groups of plug-in grooves (64).

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