Injection mold capable of dissipating heat easily

Abstract

The invention provides an injection mold easy to dissipate heat, and relates to the technical field of injection molds, according to the injection mold easy to dissipate heat, two first liquid distribution pipes are symmetrically fastened to the left side and the right side of an upper mold through threads, each first liquid distribution pipe is of a U-shaped structure as a whole, and a vertical butt joint pipe is downwards welded to the middle position of the bottom of a longitudinal supporting pipe section; two second liquid distribution pipes are symmetrically fastened to the left side and the right side of the lower die in a threaded mode, the second liquid distribution pipes are each of a U-shaped structure on the whole, and two vertically-opposite connecting pipes are welded to the middle of a longitudinal supporting pipe section; when the upper die slides downwards and is in butt joint with the lower die, the vertical butt joint pipe and the vertically-arranged connecting pipe abut against each other, make contact and are communicated in a sealed mode. And baffle rings are welded at the opening ends of the vertical butt joint pipe and the vertically arranged connecting pipe. The four valve elements can be indirectly driven by the driving force of butt joint and separation of the upper die and the lower die to drive the baffle ring to be pulled, inserted and loosened, opening and closing of the vertically-arranged butt joint pipe and the vertically-arranged connecting pipe are automatically controlled, and compared with the prior art, use is convenient and efficient.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to an injection mold that is easy to dissipate heat. Background Art

[0002] The heat dissipation effect of injection molds is of great significance for improving product quality, production efficiency and mold life. It can improve product quality, shorten molding cycle, enhance material fluidity, extend mold life, save energy and reduce emissions, and improve product color stability. Therefore, heat dissipation optimization of injection molds is one of the key factors to improve production efficiency, ensure product quality, reduce costs and promote sustainable development. It is very necessary to design an injection mold that is easy to dissipate heat.

[0003] In existing injection molds, the pipes for connecting the upper and lower molds with the coolant are mostly lacking a component that can seal the open end or the water outlet end when disassembling and separating. As a result, when the two pipes are separated by sliding with the upper and lower molds, the water outlet ends of the two pipes are directly open and leak a lot of liquid, which not only causes waste, but also wets and contaminates the mold and surrounding supporting devices or mechanisms, requiring the trouble of subsequent wiping and cleaning; Although some butt-jointed pipe fittings are equipped with water-blocking sealing components, these sealing components require additional manual operation to open and close each time the upper and lower molds slide apart and before and after docking, which is troublesome and inconvenient to use. Summary of the invention

[0004] In view of this, the present invention provides an injection mold that is easy to dissipate heat to solve the problem that although some butt-connected pipes are equipped with water-blocking sealing components, these sealing components require additional manual opening and closing before and after each sliding separation and docking of the upper and lower molds, which is troublesome and inconvenient to use.

[0005] The technical solution proposed by the present invention is: an injection mold that is easy to dissipate heat, specifically comprising: an upper mold, a lower mold and an operating table, wherein the upper mold and the lower mold are both provided with heat dissipation channels for circulating coolant; Two first liquid dispensing tubes are symmetrically threadedly fastened on the left and right sides of the upper mold, and the first liquid dispensing tube is in a U-shaped structure as a whole, and a vertical butt pipe is welded downwardly at the middle position of the bottom of the longitudinal support pipe section; two second liquid dispensing tubes are symmetrically threadedly fastened on the left and right sides of the lower mold, and the second liquid dispensing tube is in a U-shaped structure as a whole, and two vertically opposite connecting tubes are welded at the middle part of the longitudinal support pipe section; when the upper mold slides down and docks with the lower mold, the vertical butt pipes are in contact with the vertically arranged connecting tubes and are sealed and connected; A vertical valve stem is slidably installed at the inner center of the vertical butt tube and the vertically arranged connecting tube through spring pushing; a valve core is welded on the vertical valve stem, and the cross-section of the valve core is a convex structure; retaining rings are welded on the open ends of the vertical butt tube and the vertically arranged connecting tube.

[0006] Furthermore, The first liquid distributing tube and the second liquid distributing tube are in communication with the heat dissipation channels inside the upper mold and the lower mold.

[0007] Furthermore, A rubber sealing ring is fixed at the bottom of the retaining ring. When the upper mold and the lower mold are in a separated state, the head end of the vertical valve stem slides out of the vertical butt tube or the vertically arranged connecting tube, and the valve core is plugged and matched with the retaining ring, and the thickened tail end of the valve core is in contact with the retaining ring. When the upper die slides down and docks with the lower die, the protruding parts of the vertical valve stems on the upper and lower sides abut against each other.

[0008] Furthermore, The lower mold is threadedly fastened to the top of the operating table, and two threaded liquid receiving cylinders are symmetrically arranged on the operating table directly below the connecting pipe. The bottom centers of the two liquid receiving cylinders are connected to drainage hoses, and the two drainage hoses are connected to an external coolant storage container.

[0009] Furthermore, A thickened plug ring is welded at the bottom end of the vertical butt-jointed pipe, and a rubber sealing ring is provided at the bottom of the plug ring.

[0010] Furthermore, A sleeve ring is welded on the head end of the connecting pipe, the insert ring is plugged and matched with the sleeve ring on the vertically arranged connecting pipe, and the rubber sealing ring is in abutment contact with the top end of the vertically arranged connecting pipe.

[0011] Furthermore, The inner circle of the sleeve at the head end of the horizontally arranged connecting pipe is provided with a thread, and a soft conduit is threadedly connected thereto. The tail ends of the two soft conduits are respectively connected to the water outlet of an external coolant circulation pump and a coolant storage container.

[0012] Furthermore, Two inclined support rods are welded symmetrically on the left and right sides of the upper and lower dies, and the head ends of the inclined support rods are welded with shaft rings. Short shafts are welded on the front and rear ends of the longitudinal support pipe sections of the first liquid dispensing tube and the second liquid dispensing tube, and the short shafts are plugged into the shaft rings.

[0013] Furthermore, Two telescopic cylinders are symmetrically arranged on the top of the upper mold, the bottom ends of the piston rods of the two telescopic cylinders are threadedly fastened to the upper mold, and the top ends of the two telescopic cylinders are threadedly fastened to the frame of the injection molding equipment. The two telescopic cylinders are used to telescopically drive the upper mold to rise and fall and slide.

[0014] The present invention provides an injection mold that is easy to dissipate heat, which has the following beneficial effects: When the present invention is in use, when the upper mold and the lower mold are in a separated state or are being separated and disassembled, the head end part of the vertical valve stem is pushed and slid by the spring rebound of the vertical valve stem, protruding from the vertical butt tube or the vertically arranged connecting tube, and the valve core can be plugged and matched with the retaining ring so that the thickened part of the tail end of the valve core is in contact with the retaining ring, automatically closing the head end opening of the vertical butt tube or the vertically arranged connecting tube. Compared with the prior art that lacks a closed structure on the butt connecting pipe fittings of the coolant, this can avoid that the water outlet ends of the two butt connecting pipe fittings are directly opened and leak a large amount of liquid when following the sliding separation of the upper and lower molds, which causes waste and wets and contaminates the mold and the surrounding supporting devices or mechanisms, saves the trouble of subsequent wiping and cleaning, helps to reduce the loss and waste of coolant, and is easy to operate and use.

[0015] In addition, through the power transmission of the four vertical valve stems on the upper and lower sides and in conjunction with the four springs thereon, the four valve cores can indirectly utilize the driving force of the upper mold to lift and slide up and down and connect and separate with the lower mold to drive the tightening and loosening of the retaining ring, and automatically control the opening and closing of the vertical docking tube and the vertically arranged connecting tube. Compared with the existing technology, it can save the trouble of additional manual opening and closing operations of the closing component before and after each sliding separation and docking of the upper and lower molds, and is more convenient and efficient to use.

[0016] In addition, the liquid receiving cylinder is placed directly below the vertical butt tube and the vertically arranged connecting tube, and can collect a small amount of coolant that inevitably leaks from the vertical butt tube and the vertically arranged connecting tube, which helps to further reduce the loss and waste of coolant, and the liquid receiving cylinder can directly discharge the collected coolant into the coolant storage container through the discharge hose at the bottom of the liquid receiving cylinder for reuse, which is beneficial to improve the overall utilization rate of the coolant by the mold and the injection molding equipment, and indirectly reduce the implementation cost of the mold cooling and heat dissipation function. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0018] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0019] In the attached picture: Figure 1The overall front side structural schematic diagram of the present invention is shown; Figure 2 The overall bottom side structural schematic diagram of the present invention is shown; Figure 3 A schematic diagram of the structure of the second liquid dispensing tube of the present invention is shown; Figure 4 A schematic diagram of the inner structure of a half-section of the second liquid dispensing tube of the present invention is shown; Figure 5 A schematic diagram of a disassembled state of the upright valve stem of the present invention is shown; Figure 6 A schematic diagram of the structure of the first liquid dispensing tube of the present invention is shown; Figure 7 A schematic diagram of the inner structure of a half-section of the first liquid dispensing tube of the present invention is shown; Figure 8 A schematic diagram of the mounting position of the retaining ring of the present invention is shown; Reference numerals list 1. Upper mold; 2. Lower mold; 3. Operation table; 301. Liquid receiving cylinder; 4. First dispensing tube; 401. Vertical butt-joint tube; 402. Insert ring; 4021. Rubber sealing ring; 5. Second dispensing tube; 501. Connecting tube; 502. Ring; 6. Tilt the support rod; 7. Vertical valve stem; 701. Valve core; 8. retaining ring; 9. Telescopic cylinder. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0021] Please refer to Figures 1 to 8 ; Embodiment 1:

[0022] The present invention proposes an injection mold that is easy to dissipate heat, comprising: an upper mold 1, a lower mold 2 and an operating table 3. The upper mold 1 and the lower mold 2 are both provided with heat dissipation channels for circulating coolant. The coolant circulates in the upper mold 1 and the lower mold 2 through the heat dissipation channels, and can easily dissipate heat and cool the mold as a whole and the molded product therein. Among them, two first liquid dispensing tubes 4 are symmetrically threadedly fastened on the left and right sides of the upper mold 1, and the first liquid dispensing tube 4 is an overall U-shaped structure, and a vertical butt pipe 401 is welded downwardly at the middle position of the bottom of the longitudinal support pipe section; two second liquid dispensing tubes 5 are symmetrically threadedly fastened on the left and right sides of the lower mold 2, and the second liquid dispensing tube 5 is an overall U-shaped structure, and two vertically opposite connecting tubes 501 are welded at the middle part of the longitudinal support pipe section; when the upper mold 1 slides down and docks with the lower mold 2, the vertical butt pipe 401 abuts against and contacts the vertically arranged connecting tube 501 and is sealed and connected; A vertical valve stem 7 is slidably installed at the inner center of the vertical butt tube 401 and the vertical connecting tube 501 through a spring push; a valve core 701 is welded and sleeved on the vertical valve stem 7, and the cross-section of the valve core 701 is a convex structure; a retaining ring 8 is welded to the open end of the vertical butt tube 401 and the vertical connecting tube 501.

[0023] Preferably, The first liquid distributing tube 4 and the second liquid distributing tube 5 are communicated with the heat dissipation channels inside the upper mold 1 and the lower mold 2 .

[0024] Preferably, A rubber sealing ring is fixed at the bottom of the retaining ring 8. When the upper mold 1 and the lower mold 2 are in a separated state or are being separated and disassembled, the head end portion of the vertical valve stem 7 is pushed and slid by the spring rebound on the vertical valve stem 7, protruding from the vertical butt pipe 401 or the vertically arranged connecting pipe 501, and the valve core 701 can be plugged and matched with the retaining ring 8, so that the thickened tail end portion of the valve core 701 abuts against the retaining ring 8, and the head end opening of the vertical butt pipe 401 or the vertically arranged connecting pipe 501 is automatically closed. Compared with the prior art that lacks a closed structure on the butt-connecting connecting pipe fittings of the coolant, this can prevent the water outlet ends of the two butt-connecting connecting pipe fittings from being directly opened and leaking a large amount of liquid when following the sliding separation of the upper and lower molds, which generates waste and wets and contaminates the mold and the surrounding supporting devices or mechanisms, saves the trouble of subsequent wiping and cleaning, helps to reduce the loss and waste of coolant, and is easy to operate and use; When the upper mold 1 slides down and docks with the lower mold 2, the protruding parts of the four vertical valve stems 7 on the upper and lower sides abut against each other, so that the four vertical valve stems 7 on the upper and lower sides can push each other back and slide into the interior of the vertical docking tube 401 and the vertically arranged connecting tube 501 respectively, driving the control valve core 701 to separate from the empty position with the retaining ring 8, automatically opening the openings of the vertical docking tube 401 and the vertically arranged connecting tube 501, and completing the connection between the vertical docking tube 401 and the vertically arranged connecting tube 501, and then through the power transmission of the four vertical valve stems 7 on the upper and lower sides and in conjunction with the four springs thereon, the four valve cores 701 can indirectly utilize the driving force of the upper mold 1 to rise and fall and slide to dock and separate with the lower mold 2 to drive the retaining ring 8 to pull and tighten, and automatically control the opening and closing of the vertical docking tube 401 and the vertically arranged connecting tube 501. Compared with the prior art, it can save the trouble of additional manual switching operation of the closing component before and after each sliding separation and docking of the upper and lower molds, and is more convenient and efficient to use.

[0025] Preferably, The lower mold 2 is threadedly fastened to the top of the operating table 3, and two threaded liquid receiving tubes 301 are symmetrically arranged on the operating table 3 just below the connecting pipe 501. The bottom centers of the two liquid receiving tubes 301 are connected with drainage hoses, and the two drainage hoses are connected to an external coolant storage container. Although the vertical butt joint 401 and the vertically arranged connecting pipe 501 are provided with a vertical valve stem 7 and a valve core 701 for sealing their openings when they are disassembled and separated, during the separation and disassembly process of the vertical butt joint 401 and the vertically arranged connecting pipe 501, when the upper and lower vertical valve stems 7 have not been completely separated, and the four valve cores 701 have not been completely plugged and sealed with the four retaining rings 8, the vertical butt joint 401 and the vertically arranged connecting pipe 501 are The coolant in the open ends of the connecting pipe 401 and the vertically arranged connecting pipe 501 will still leak out through the gap between the retaining ring 8 and the valve core 701. The liquid receiving cylinder 301 is arranged directly below the vertical butt-joint pipe 401 and the vertically arranged connecting pipe 501, and can collect a small amount of coolant that inevitably leaks out from the vertical butt-joint pipe 401 and the vertically arranged connecting pipe 501, which helps to further reduce the loss and waste of coolant. The liquid receiving cylinder 301 can directly discharge the collected coolant into the coolant storage container through the discharge hose at its bottom for reuse, which is beneficial to improving the overall utilization rate of the coolant by the mold and the injection molding equipment, and indirectly reducing the implementation cost of the mold cooling and heat dissipation function.

[0026] Preferably, A thickened insert ring 402 is welded to the bottom end of the vertical butt-joint pipe 401 , and a rubber sealing ring 4021 is provided at the bottom of the insert ring 402 .

[0027] Preferably, A collar 502 is welded to the head end of the connecting pipe 501, and the insert ring 402 is plugged into and matched with the collar 502 on the vertically arranged connecting pipe 501, and the rubber sealing ring 4021 is in contact with the top end of the vertically arranged connecting pipe 501, so as to implement extrusion sealing between the vertically arranged connecting pipe 501 and the vertical butt tube 401 in the docking state.

[0028] Preferably, The inner circle of the collar 502 at the head end of the horizontally arranged connecting pipe 501 is threaded and is threadedly connected with a soft conduit. The tail ends of the two soft conduits are respectively connected to the water outlet of an external coolant circulation pump and a coolant storage container.

[0029] Preferably, Two telescopic cylinders 9 are symmetrically arranged at the top of the upper mold 1, the bottom ends of the piston rods of the two telescopic cylinders 9 are threadedly fastened to the upper mold 1, and the top ends of the two telescopic cylinders 9 are threadedly fastened to the frame of the injection molding equipment. The two telescopic cylinders 9 are used to telescopically drive the upper mold 1 to rise and fall and slide.

[0030] Based on the first embodiment, the second embodiment: Two inclined support rods 6 are welded symmetrically on the left and right sides of the upper mold 1 and the lower mold 2. A shaft ring is welded at the head end of the inclined support rod 6, and short shafts are welded at the front and rear ends of the longitudinal support pipe sections of the first liquid dispensing tube 4 and the second liquid dispensing tube 5. The short shafts are plugged into the shaft rings. The inclined support rods 6 are used to provide auxiliary and reinforced support for the first liquid dispensing tube 4 and the second liquid dispensing tube 5, which helps to reduce the probability of the first liquid dispensing tube 4 and the second liquid dispensing tube 5 being pushed and broken by the vertically arranged connecting pipe 501 and the vertical docking pipe 401 of the docking combination.

[0031] Working principle: The coolant circulates inside the upper mold 1 and the lower mold 2 through the heat dissipation channel, which can easily dissipate heat and cool the mold as a whole and the molded product inside it, and the two telescopic cylinders 9 are used to telescopically drive the upper mold 1 to move up and down; When the upper mold 1 and the lower mold 2 are in a separated state or are being separated and disassembled, the head end portion of the vertical valve stem 7 is pushed and slid by the spring rebound on the vertical valve stem 7, protruding from the vertical butt joint tube 401 or the vertically arranged connecting tube 501, and the valve core 701 can be plugged and matched with the retaining ring 8, so that the thickened tail end portion of the valve core 701 abuts against the retaining ring 8, and the head end opening of the vertical butt joint tube 401 or the vertically arranged connecting tube 501 is automatically closed, so as to avoid the cooling liquid from directly leaking a large amount through the open end of the vertical butt joint tube 401 or the vertically arranged connecting tube 501, which will cause waste and wet and pollute the mold and surrounding supporting devices or mechanisms; When the upper mold 1 slides down and docks with the lower mold 2, the protruding parts of the four vertical valve stems 7 on the upper and lower sides abut against each other, so that the four vertical valve stems 7 on the upper and lower sides push each other back and slide into the inside of the vertical docking tube 401 and the vertically arranged connecting tube 501, respectively, driving the control valve core 701 and the retaining ring 8 to separate from the empty position, automatically opening the openings of the vertical docking tube 401 and the vertically arranged connecting tube 501, and completing the connection between the vertical docking tube 401 and the vertically arranged connecting tube 501; 8 and 701.

[0032] In this article, there are a few points to note: 1. The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention, and other structures can refer to the general design.

[0033] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0034] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An injection mold that is easy to dissipate heat, comprising: An upper mold (1), a lower mold (2) and an operating table (3), wherein the upper mold (1) and the lower mold (2) are both provided with heat dissipation channels for circulating cooling liquid; The invention is characterized in that two first liquid dispensing tubes (4) are symmetrically threadedly fastened on the left and right sides of the upper mold (1), the first liquid dispensing tube (4) is in the shape of a U-shaped structure as a whole, and a vertical butt pipe (401) is welded downwardly at the middle position of the bottom of the longitudinal support pipe section; two second liquid dispensing tubes (5) are symmetrically threadedly fastened on the left and right sides of the lower mold (2), the second liquid dispensing tube (5) is in the shape of a U-shaped structure as a whole, and two vertically opposite connecting tubes (501) are welded at the middle part of the longitudinal support pipe section; when the upper mold (1) slides down to dock with the lower mold (2), the vertical butt pipe (401) and the vertically arranged connecting tube (501) are in contact with each other and are sealed and connected; A vertical valve stem (7) is slidably installed at the inner center of the vertical butt-joint pipe (401) and the vertically arranged connecting pipe (501) through a spring push-through; a valve core (701) is welded and sleeved on the vertical valve stem (7), and the cross-section of the valve core (701) is a convex structure; and a retaining ring (8) is welded to the open ends of the vertical butt-joint pipe (401) and the vertically arranged connecting pipe (501).

2. The injection mold that is easy to dissipate heat according to claim 1, characterized in that: The first liquid dispensing tube (4) and the second liquid dispensing tube (5) are in communication with heat dissipation channels inside the upper mold (1) and the lower mold (2).

3. The injection mold that is easy to dissipate heat according to claim 1, characterized in that: A rubber sealing ring is fixed to the bottom of the retaining ring (8); when the upper mold (1) and the lower mold (2) are in a separated state, the head end portion of the vertical valve stem (7) slides and protrudes out of the vertical butt tube (401) or the vertically arranged connecting tube (501), and the valve core (701) is plugged into the retaining ring (8), and the thickened tail end portion of the valve core (701) is in contact with the retaining ring (8); When the upper die (1) slides down to dock with the lower die (2), the protruding parts of the vertical valve stems (7) on the upper and lower sides abut against each other.

4. The injection mold that is easy to dissipate heat according to claim 1, characterized in that: The lower die (2) is threadedly fastened to the top of the operating table (3), and two threadedly fastened liquid receiving cylinders (301) are symmetrically arranged on the operating table (3) directly below the connecting pipe (501), and drainage hoses are connected to the centers of the bottoms of the two liquid receiving cylinders (301), and the two drainage hoses are connected to an external coolant storage container.

5. The injection mold that is easy to dissipate heat according to claim 1, characterized in that: A thickened insert ring (402) is welded to the bottom end of the vertical butt-jointed pipe (401), and a rubber sealing ring (4021) is provided at the bottom of the insert ring (402).

6. The injection mold that is easy to dissipate heat according to claim 5, characterized in that: A collar (502) is welded to the head end of the connecting pipe (501), the insert ring (402) is plugged into and matched with the collar (502) on the vertically arranged connecting pipe (501), and the rubber sealing ring (4021) is in contact with the top end of the vertically arranged connecting pipe (501).

7. The injection mold that is easy to dissipate heat according to claim 6, characterized in that: The inner ring of the collar (502) at the head end of the horizontally arranged connecting pipe (501) is provided with a thread, and a soft conduit is threadedly connected thereto. The tail ends of the two soft conduits are respectively connected to the water outlet of an external coolant circulation pump and a coolant storage container.

8. The injection mold that is easy to dissipate heat according to claim 1, characterized in that: Two inclined support rods (6) are welded to the left and right sides of the upper mold (1) and the lower mold (2) in a front-to-back symmetrical manner, the head ends of the inclined support rods (6) are welded to shaft collars, and short shafts are welded to the front and back ends of the longitudinal support pipe sections of the first liquid dispensing tube (4) and the second liquid dispensing tube (5), and the short shafts are plug-fitted to the shaft collars.

9. The injection mold that is easy to dissipate heat according to claim 1, characterized in that: Two telescopic oil cylinders (9) are symmetrically arranged at the top of the upper mold (1); the bottom ends of the piston rods of the two telescopic oil cylinders (9) are threadedly fastened to the upper mold (1), and the top ends of the two telescopic oil cylinders (9) are threadedly fastened to the frame of the injection molding equipment; the two telescopic oil cylinders (9) are used to telescopically drive the upper mold (1) to move up and down.

Images