Recyclable water cooling structure and method for injection molding machine

Abstract

The recyclable water cooling structure comprises a workbench, two sets of sliding rails are symmetrically and fixedly mounted at the top of the workbench, two sets of half injection molding lower molds which are spliced with each other are slidably mounted on the two sets of sliding rails, and grooves are formed in the outer walls of the two sets of half injection molding lower molds; the water tank, the water pump, the water cooling shell and other assemblies are arranged to form a complete cooling water circulation system, cooling water flows into the water cooling shell from the water tank through the first telescopic hose under the action of the water pump, and after an injection molding part in the half injection molding lower mold is cooled, the cooling water flows back to the water tank through the second telescopic hose, so that cyclic utilization of the cooling water is achieved; waste of water resources is effectively avoided, the energy-saving and environment-friendly concept is met, meanwhile, refrigeration assemblies are arranged on the two sides of the water tank, cooling water in the water tank is refrigerated and cooled through semiconductor chilling plates, it is guaranteed that the cooling water is kept at the proper temperature all the time, and therefore the efficient cooling effect is continuously provided for injection molding parts, and the efficiency and quality of injection molding production are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of injection molding machines, and particularly relates to a recyclable water-cooling structure and method for an injection molding machine. Background Art

[0002] An injection molding machine, also known as an injection molding press or an injection machine, is a machine that uses a plastic molding die to form various shapes of plastic products from thermoplastic or thermosetting plastics. The injection molding machine works by applying high pressure to the molten plastic, forcing it to be extruded through a high-pressure injection to fill the mold cavity, thereby forming the operation of the mold. When the injection molding machine processes workpieces, the working injection mold needs to go through the process of cooling and demolding. In order to achieve a faster cooling speed, water cooling is generally used for cooling.

[0003] The traditional water-cooling structure has inaccurate temperature control for the cooling water and is difficult to adjust the temperature of the cooling water in real time according to different requirements of the injection molding process, resulting in large fluctuations in the mold temperature, which in turn affects quality indicators such as the shrinkage rate and warpage deformation of the injection molded products. Therefore, we propose a recyclable water-cooling structure and method for an injection molding machine to solve the problems existing in the prior art. Summary of the Invention

[0004] The purpose of the present invention is to provide a recyclable water-cooling structure and method for an injection molding machine. By the cooperation of two refrigeration components in the water-cooling mechanism, the cooling water in the water tank can be refrigerated and cooled, and the temperature of the cooling water can be adjusted in real time according to different requirements of the injection molding process, so as to solve the problems in the prior art mentioned in the above background art.

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

[0006] A recyclable water-cooling structure for an injection molding machine, including a workbench. Two sets of slide rails are symmetrically and fixedly installed on the top of the workbench. Two mutually spliced semi-injection lower molds are slidably installed on the two sets of slide rails. Grooves are formed on the outer walls of the two semi-injection lower molds, and a water-cooling mechanism for cooling and lowering the temperature of the injection molded parts is installed inside the two grooves;

[0007] An installation groove is formed at the bottom of the workbench, and a driving mechanism for splicing and separating the two semi-injection lower molds is installed inside the installation groove;

[0008] Four sets of support rods are symmetrically and fixedly installed on the surface of the workbench. The top of the four sets of support rods is fixedly installed with a top plate, and an injection molding mechanism for cooperating with the two semi-injection lower molds is arranged on the top plate.

[0009] Preferably, the water cooling mechanism includes a support plate fixedly installed on the four legs at the bottom of the workbench. A water tank is fixedly installed on the top of the support plate. At both ends on one side of the water tank, water pumps are fixedly connected through pipes. The semi-injection lower mold is fixedly installed with a water cooling shell inside the groove. The water outlet ends of the two water pumps are respectively communicated with the water inlet ends of the two water cooling shells through the first telescopic hoses. The water outlet ends of the two water cooling shells are communicated with the inside of the water tank through the second telescopic hoses.

[0010] Preferably, the water inlet end of the water cooling shell is fixedly communicated with a water inlet port. One end of the water inlet port is communicated with one end of the first telescopic hose through a quick connector. The water outlet end of the water cooling shell is fixedly communicated with a water outlet port. One end of the water outlet port penetrates through the workbench and is communicated with one end of the second telescopic hose. And an electromagnetic valve is arranged on the outer wall of the water outlet port.

[0011] Preferably, refrigeration components for cooling the cooling water inside the water tank are arranged on both sides of the water tank. The refrigeration components include through grooves opened on the side walls of the water tank. A semiconductor refrigeration sheet is fixedly installed inside the through grooves. A heat dissipation fin is fixedly installed at the hot end of the semiconductor refrigeration sheet.

[0012] Preferably, the driving mechanism includes a bidirectional threaded rod rotatably installed inside the installation groove. One end of the bidirectional threaded rod penetrates through the installation groove and is fixedly connected with a driving motor. Moving blocks are threadedly connected to the outer walls at both ends of the bidirectional threaded rod. The two semi-injection lower molds are respectively fixedly installed on the tops of the two moving blocks.

[0013] Preferably, two sets of sliding grooves for limiting and guiding the moving blocks are symmetrically opened on the top of the workbench. The interiors of the two sliding grooves are communicated with the interior of the installation groove. And the side wall of the moving block is slidably connected with the inner wall of the sliding groove.

[0014] Preferably, the injection molding mechanism includes two cylinders symmetrically and fixedly installed on the top of the top plate. The bottom of the piston ends of the two cylinders penetrates through the top plate and is fixedly connected with a mounting plate. An upper mold used in cooperation with the two semi-injection lower molds is fixedly installed at the bottom of the mounting plate. A plastic injection pipe penetrating through the mounting plate and the top plate is fixedly communicated at the center of the top of the upper mold.

[0015] Preferably, an arc-shaped protrusion is integrally formed on one side of one of the semi-injection lower molds. An arc-shaped groove adapted to the arc-shaped protrusion is opened on one side of the other semi-injection lower mold. The arc-shaped protrusion is inserted into the arc-shaped groove.

[0016] Preferably, two sets of sliders are symmetrically and fixedly installed at the bottom of the semi-injection lower mold. The bottoms of the two sets of sliders are respectively slidably arranged on the outer walls of the tops of the two sets of slide rails.

[0017] A recyclable water cooling method for an injection molding machine, comprising the following steps:

[0018] Step 1: Drive the bidirectional threaded rod to rotate through the drive motor in the drive mechanism, so that the moving blocks threadedly connected to the outer walls at both ends of the bidirectional threaded rod move relatively under the limitation of the sliding grooves, and the two semi-injection lower molds are spliced along the slide rails to form a mold cavity:

[0019] Step 2: Drive the installation plate and the upper mold at its bottom to descend through the telescopic movement of the piston ends of the two cylinders in the injection mechanism on the top plate, so that the upper mold is inserted into the mold cavity formed by splicing the two semi-injection lower molds, the installation plate covers the tops of the two semi-injection lower molds, and the molten material is injected into the mold cavity through the injection pipe for injection molding;

[0020] Step 3: After the injection molding is completed, start the two water pumps in the water cooling mechanism. The cooling water is transported to the corresponding water cooling shells through the first telescopic hoses and the water inlet ports connected to them by the two water pumps. After the cooling water enters the water cooling shells, it cools the parts in the mold cavity after injection molding, reducing the cooling waiting time of the molded parts after injection molding;

[0021] Step 4: After the injection molded parts are cooled, the water outlet port can be controlled to open through the solenoid valve, so that the heated cooling water in the water cooling shell flows out of the water cooling shell and returns to the water tank through the second telescopic hose. After the water in the water cooling shell has flowed out, the solenoid valve closes the water outlet port. (It is also possible that under the action of the water pump, the cooling water flows from the water tank into the water cooling shell through the first telescopic hose, cools and heats the injection molded parts in the semi-injection lower mold, and then flows back to the water tank through the second telescopic hose, realizing the continuous circulation of the cooling water to cool the injection molded parts. The cooling components on both sides of the water tank cool the returned cooling water, making the cooling water in the water tank easy to recycle. The cold end of the semiconductor refrigeration sheet acts on the water flow inside the water tank, and the hot end dissipates heat outward through the heat dissipation fins;

[0022] Step 5: After the injection molded parts are solidified, drive the two moving blocks in the drive mechanism to drive the semi-injection lower molds at their tops to separate from the splicing, so that the two semi-injection lower molds slide and separate along the slide rails, and the first telescopic hose and the second telescopic hose move and stretch along with the water cooling shells on the outer walls of the semi-injection lower molds, thereby exposing the molded and cooled injection molded parts, making it easy to demold and take out the injection molded parts.

[0023] The technical effects and advantages of the present invention: A recyclable water cooling structure and method for an injection molding machine proposed by the present invention has the following advantages compared with the prior art:

[0024] 1. The present invention forms a complete cooling water circulation system by setting up components such as a water tank, a water pump, and a water-cooled shell. Under the action of the water pump, the cooling water flows from the water tank into the water-cooled shell through the first telescopic hose, cools the injection-molded parts in the semi-injection lower mold, and then returns to the water tank through the second telescopic hose, realizing the recycling of the cooling water, effectively avoiding the waste of water resources, conforming to the concept of energy conservation and environmental protection. At the same time, the refrigeration components equipped on both sides of the water tank use semiconductor refrigeration chips to cool down the cooling water in the water tank, ensuring that the cooling water always maintains an appropriate temperature, thereby continuously providing an efficient cooling effect for the injection-molded parts, improving the efficiency and quality of injection molding production;

[0025] 2. In the present invention, the driving mechanism adopts a combined design of a bidirectional threaded rod and a driving motor. The driving motor drives the bidirectional threaded rod to rotate, causing two groups of moving blocks to move towards the middle or both sides on the bidirectional threaded rod simultaneously, thereby realizing the precise splicing and separation of the two groups of semi-injection lower molds. This design is simple and flexible in operation, can quickly complete the assembly and disassembly of the mold, greatly shortens the production preparation time, and also improves the demolding efficiency of the injection-molded parts. The sliding grooves opened at the top of the workbench play a good limiting and guiding role for the moving blocks, ensuring the stability and accuracy of the moving blocks during the movement process, ensuring that the two groups of semi-injection lower molds can be accurately docked, and avoiding quality problems of injection products caused by inaccurate mold splicing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional structural schematic diagram of the front view of the present invention;

[0027] Figure 2 is a structural schematic diagram of the water-cooling mechanism and the workbench of the present invention;

[0028] Figure 3 is a structural schematic diagram of the installation groove and the driving mechanism of the present invention;

[0029] Figure 4 is a structural schematic diagram of the semi-injection lower mold and the water-cooled shell of the present invention;

[0030] Figure 5 is a structural schematic diagram of the bottom slider of the semi-injection lower mold of the present invention;

[0031] Figure 6 is a structural schematic diagram of the water tank and the refrigeration components of the present invention;

[0032] Figure 7 is a structural schematic diagram of the semi-injection lower mold and the surface of the workbench of the present invention.

[0033] In the figure: 1, workbench; 2, slide rail; 3, semi-injection lower mold; 4, groove; 5, water cooling mechanism; 51, support plate; 52, water tank; 53, water pump; 54, water cooling shell; 55, water inlet port; 56, water outlet port; 57, solenoid valve; 58, refrigeration component; 581, through groove; 582, semiconductor refrigeration sheet; 583, heat dissipation fin; 6, installation groove; 7, drive mechanism; 71, bidirectional threaded rod; 72, drive motor; 73, moving block; 8, support rod; 9, top plate; 10, injection mechanism; 101, cylinder; 102, mounting plate; 103, upper mold; 104, injection pipe; 11, slider; 12, arc-shaped protrusion; 13, arc-shaped groove; 14, chute. Detailed implementation manner

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0035] The present invention provides a recyclable water cooling structure for an injection molding machine as Figure 1-7 shown, which includes a workbench 1. Two groups of slide rails 2 are symmetrically and fixedly installed on the top of the workbench 1. Two mutually spliced semi-injection lower molds 3 are slidably installed on the two groups of slide rails 2. Grooves 4 are opened on the outer walls of the two groups of semi-injection lower molds 3. A water cooling mechanism 5 for cooling and lowering the temperature of the injection molded parts is installed inside the two groups of grooves 4;

[0036] The slide rails 2 adopt high-precision linear guides, and the surface is plated to reduce the friction coefficient, ensuring smooth sliding of the semi-injection lower mold 3. The two groups of slide rails 2 are symmetrically arranged, so that the mold is evenly stressed when opening and closing, avoiding wear caused by eccentric loading. The groove 4 is an embedded design, and the water cooling mechanism 5 is directly integrated on the outer wall of the mold, maximizing the use of the mold space, while avoiding interference of external cooling pipelines on the movement of the mold, saving installation space, shortening the heat conduction path between the cooling water and the mold, and improving the cooling efficiency;

[0037] An installation groove 6 is opened at the bottom of the workbench 1, and a drive mechanism 7 for splicing and separating the two groups of semi-injection lower molds 3 is installed inside the installation groove 6;

[0038] Four groups of support rods 8 are symmetrically and fixedly installed on the surface of the workbench 1. The tops of the four groups of support rods 8 are fixedly installed with a top plate 9, and an injection mechanism 10 for cooperating with the two groups of semi-injection lower molds 3 is arranged on the top plate 9.

[0039] The support rod 8 is made of hollow steel structure, with power and signal lines arranged inside for wiring, keeping the appearance tidy. The four-column support structure disperses the injection pressure, reducing the risk of deformation of the workbench. The hidden wiring avoids the exposure of pipelines and lines, improving safety.

[0040] Furthermore, the water cooling mechanism 5 includes a support plate 51, which is fixedly installed on the four legs at the bottom of the workbench 1. A water tank 52 is fixedly installed on the top of the support plate 51. At both ends on one side of the water tank 52, water pumps 53 are fixedly connected through pipelines. The semi-injection lower mold 3 is fixedly installed inside the groove 4 with a water cooling shell 54. The water outlet ends of the two water pumps 53 are respectively communicated with the water inlet ends of the two water cooling shells 54 through the first telescopic hoses. The water outlet ends of the two water cooling shells 54 are communicated with the inside of the water tank 52 through the second telescopic hoses.

[0041] The inner walls of the water cooling shell 54 and the inner wall of the groove 4 are coated with a corrosion-resistant coating to reduce the corrosion of the inner walls of the water cooling shell 54 and the inner wall of the groove 4 by the cooling water. The water pump 53 is the Grundfos series UPS25-80, with a high-temperature-resistant design (the highest medium temperature is 110°C), adapting to the high-pressure requirements of the cooling water circulation and supporting frequent start and stop.

[0042] Specifically, the water inlet end of the water cooling shell 54 is fixedly communicated with a water inlet port 55. One end of the water inlet port 55 is communicated with one end of the first telescopic hose through a quick connector. The water outlet end of the water cooling shell 54 is fixedly communicated with a water outlet port 56. One end of the water outlet port 56 penetrates through the workbench 1 and is communicated with one end of the second telescopic hose, and an electromagnetic valve 57 is arranged on the outer wall of the water outlet port 56.

[0043] It should be noted that an avoidance groove for avoiding the movement of the water outlet port 56 is opened on the workbench 1. The electromagnetic valve 57 is Airtac 4V210-08, with a normally closed design. The water circuit is automatically cut off when powered off to prevent the leakage of cooling water when the mold is separated.

[0044] The telescopic hose is made of high-temperature-resistant and pressure-resistant material, which can automatically expand and contract with the opening and closing of the mold, avoiding pipeline entanglement or breakage. Both ends of the telescopic hose are hard pipes, and the middle is a telescopic hose, which is convenient for connecting ports, the water tank 52 and the water pump 53 through the hard pipes.

[0045] Furthermore, on both sides of the water tank 52, there are refrigeration components 58 for cooling the cooling water inside the water tank 52. The refrigeration components 58 include a through groove 581 opened on the side wall of the water tank 52. A semiconductor refrigeration sheet 582 is fixedly installed inside the through groove 581. A heat dissipation fin 583 is fixedly installed at the hot end of the semiconductor refrigeration sheet 582.

[0046] The cold end of the semiconductor refrigeration sheet 582 directly contacts the water flow in the water tank 52, and the hot end dissipates heat externally through the heat dissipation fins 583, thereby achieving rapid cooling, supporting dynamic movement of the mold, ensuring continuous operation of the cooling system, no compressor noise, low energy consumption, and a cold and hot end separation design to avoid heat reflux.

[0047] The semiconductor refrigeration chip is TEC1-12706, the cold end is directly attached to the inner wall of the water tank, and the hot end is connected to the external heat dissipation fins to meet the rapid cooling needs of small-volume water tanks.

[0048] It is worth noting that the water tank 52 is provided with a maintenance port (not shown in the figure) for regular cleaning of impurities in the water tank 52, and a sensor (not shown in the figure) is provided inside the water tank 52 for continuously monitoring the water temperature in the water tank 52. The sensor is a PT100 platinum resistance temperature sensor WZP-035, which is installed inside the water tank 52, and feeds back the water temperature to the control system in real time, and jointly adjusts the power of the semiconductor refrigeration chip. If it exceeds the set threshold, the power of the semiconductor refrigeration chip is enhanced.

[0049] Furthermore, the driving mechanism 7 includes a bidirectional threaded rod 71, which is rotatably installed inside the mounting groove 6. One end of the bidirectional threaded rod 71 passes through the mounting groove 6 and is fixedly connected to a driving motor 72. The outer walls at both ends of the bidirectional threaded rod 71 are threadedly connected to moving blocks 73. The two groups of half injection lower molds 3 are respectively fixedly installed on the top of the two groups of moving blocks 73.

[0050] The driving motor is a Delta servo motor ECMA-C20601RS, which cooperates with a bidirectional threaded rod to achieve high-precision opening and closing control of the semi-injection lower mold (positioning accuracy ±0.01mm), supports PLC linkage, and the bidirectional threaded rod 71 is driven by a precision ball screw. The driving motor 72 is equipped with an encoder feedback to achieve precise control of the mold opening and closing position. The encoder feedback ensures the positioning accuracy (±0.1mm) when the mold is closed, reduces the flash of the injection molded parts, and the bidirectional drive of the threaded rod ensures symmetrical opening and closing of the mold to avoid uneven force on one side.

[0051] Specifically, two groups of slide grooves 14 for limiting and guiding the moving block 73 are symmetrically provided on the top of the workbench 1 . The interiors of the two groups of slide grooves 14 are connected to the interior of the installation groove, and the side walls of the moving block 73 are slidably connected to the inner walls of the slide grooves 14 .

[0052] A wear-resistant bushing is provided on the inner wall of the slide groove 14 to reduce the sliding resistance of the moving block 73 and prevent the threaded rod from being deformed by force, thereby extending the service life of the driving mechanism and reducing the maintenance frequency.

[0053] Further, the injection molding mechanism 10 includes two sets of cylinders 101. The two sets of cylinders 101 are symmetrically and fixedly installed on the top of the top plate 9. The bottoms of the piston ends of the two sets of cylinders 101 penetrate through the top plate 9 and are fixedly connected with a mounting plate 102. A top mold 103 that is used in cooperation with the two semi-injection bottom molds 3 is fixedly installed at the bottom of the mounting plate 102. A plastic injection pipe 104 that penetrates through the mounting plate 102 and the top plate 9 is fixedly communicated at the center of the top of the top mold 103.

[0054] The cylinder 101 is an SMC CDQ2B50-50D, a double-acting cylinder, which controls the pressure in cooperation with a proportional valve to realize the stable lifting of the top mold 103. The cylinder 101 cooperates with the cooling system to shorten the injection molding cycle (such as immediately opening the mold after the cooling stage ends).

[0055] Specifically, an arc-shaped protrusion 12 is integrally formed on one side of one of the semi-injection bottom molds 3, and an arc-shaped groove 13 adapted to the arc-shaped protrusion 12 is formed on one side of the other semi-injection bottom mold 3. The arc-shaped protrusion 12 is inserted into the interior of the arc-shaped groove 13.

[0056] The arc-shaped protrusion 12 and the arc-shaped groove 13 adopt a tapered surface fit design, which automatically corrects the position deviation during closing, ensures the cavity sealing performance, automatically compensates for the machining error, improves the mold closing sealing performance, and prevents the molten material from leaking.

[0057] Two sets of sliders 11 are symmetrically and fixedly installed at the bottom of the semi-injection bottom mold 3. The bottoms of the two sets of sliders 11 are respectively slidably arranged on the top outer walls of the two sets of slide rails 2.

[0058] The slider 11 is internally provided with a needle roller bearing to reduce the sliding friction, and a dust cover is arranged at the bottom to prevent debris from entering the slide rail 2, thereby prolonging the service life of the slide rail 2 and the slider 11.

[0059] A recyclable water cooling method for an injection molding machine includes the following steps:

[0060] Step 1: Drive the bidirectional threaded rod 71 to rotate through the drive motor 72 in the drive mechanism 7, so that the moving blocks 73 threadedly connected to the outer walls of both ends of the bidirectional threaded rod 71 move relatively under the limitation of the chute 14, so that the two semi-injection bottom molds 3 are spliced along the slide rail 2 to form a mold cavity.

[0061] Step 2: Drive the piston ends of the two sets of cylinders 101 in the injection molding mechanism 10 on the top plate 9 to expand and contract to drive the mounting plate 102 and the top mold 103 at its bottom to descend, so that the top mold 103 is inserted into the mold cavity formed by splicing the two semi-injection bottom molds 3. The mounting plate 102 covers the tops of the two semi-injection bottom molds 3, and the molten material is injected into the mold cavity through the plastic injection pipe 104 for injection molding.

[0062] Step 3: After the injection molding is completed, start the two groups of water pumps 53 in the water cooling mechanism 5. Through the two groups of water pumps 53, the cooling water is conveyed to the corresponding water cooling shells 54 through the first telescopic hoses and the water inlet ports 55 connected thereto. After the cooling water enters the water cooling shells 54, it cools the components in the mold cavity after the injection molding is completed, reducing the cooling waiting time of the molded components after injection molding;

[0063] Step 4: After the injection molded part is cooled, the solenoid valve 57 can be used to control the opening of the water outlet port 56, so that the heated cooling water in the water cooling shell 54 flows out of the water cooling shell 54 and returns to the water tank 52 through the second telescopic hose. After the water in the water cooling shell 54 has flowed out, the solenoid valve 57 closes the water outlet port 56. (It is also possible that under the action of the water pump 53, the cooling water flows from the water tank 52 into the water cooling shell 54 through the first telescopic hose, cools and heats the injection molded part in the semi-injection lower mold 3, and then flows back to the water tank 52 through the second telescopic hose, realizing the continuous circulation of the cooling water to cool the injection molded part). The cooling components 58 on both sides of the water tank 52 cool the reflux cooling water, so that the cooling water in the water tank 52 is convenient for recycling. The cold end of the semiconductor refrigeration sheet 582 acts on the internal water flow of the water tank 52, and the hot end dissipates heat outward through the heat dissipation fins 583;

[0064] Step 5: After the injection molded part is solidified, drive the two groups of moving blocks 73 in the driving mechanism 7 to drive the semi-injection lower mold 3 at the top thereof to be separated from the splicing, so that the two groups of semi-injection lower molds 3 slide and separate along the slide rail 2. The first telescopic hose and the second telescopic hose move and stretch along with the water cooling shell 54 on the outer wall of the semi-injection lower mold 3, thereby exposing the injection molded part after forming and cooling, making it convenient to demold and take out the injection molded part.

[0065] In the present invention document, the control mode of the electrical appliances is automatically controlled by a controller. The controller is Siemens PLC S7-1200 1214C DC / DC / DC, which centrally controls devices such as water pumps, semiconductor refrigeration sheets, drive motors, solenoid valves, etc., and supports programming of injection molding process parameters (such as cooling time, temperature). The control circuit of the controller can be realized by simple programming by those skilled in the art, which belongs to the common knowledge in the art. And this application document is mainly used to protect the structure and shape and their combination, so the control mode and circuit connection are not explained in detail in this application document.

[0066] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A recyclable water cooling structure for an injection molding machine, comprising a workbench (1), characterized in that: Two sets of slide rails (2) are symmetrically fixedly installed on the top of the workbench (1), and two sets of semi-injection lower molds (3) spliced ​​to each other are slidably installed on the two sets of slide rails (2). The outer walls of the two sets of semi-injection lower molds (3) are provided with grooves (4), and the insides of the two sets of grooves (4) are installed with water cooling mechanisms (5) for cooling the injection molded parts; The bottom of the workbench (1) is provided with a mounting groove (6), and a driving mechanism (7) for splicing and separating the two groups of half injection lower molds (3) is installed inside the mounting groove (6); Four groups of support rods (8) are symmetrically fixedly installed on the surface of the workbench (1), and a top plate (9) is fixedly installed on the top of the four groups of support rods (8). An injection molding mechanism (10) used in conjunction with two groups of half injection lower molds (3) is arranged on the top plate (9).

2. The recyclable water cooling structure for an injection molding machine according to claim 1, characterized in that: The water cooling mechanism (5) comprises a support plate (51), the support plate (51) being fixedly mounted on four legs at the bottom of the workbench (1), a water tank (52) being fixedly mounted on the top of the support plate (51), both ends of one side of the water tank (52) being fixedly connected to a water pump (53) via a pipeline, a water cooling shell (54) being fixedly mounted inside the recess (4) of the semi-injection lower mold (3), the water outlet ends of the two groups of water pumps (53) being respectively connected to the water inlet ends of the two groups of water cooling shells (54) via a first telescopic hose, and the water outlet ends of the two groups of water cooling shells (54) being connected to the inside of the water tank (52) via a second telescopic hose.

3. The recyclable water cooling structure for an injection molding machine according to claim 2, characterized in that: The water inlet end of the water cooling shell (54) is fixedly connected to a water inlet port (55), one end of the water inlet port (55) is connected to one end of a first telescopic hose via a quick-connect connector, the water outlet end of the water cooling shell (54) is fixedly connected to a water outlet port (56), one end of the water outlet port (56) passes through the workbench (1) and is connected to one end of a second telescopic hose, and an electromagnetic valve (57) is provided on the outer wall of the water outlet port (56).

4. The recyclable water cooling structure for an injection molding machine according to claim 2, characterized in that: Refrigeration components (58) for cooling and lowering the temperature of cooling water inside the water tank (52) are arranged on both sides of the water tank (52), and the refrigeration component (58) includes a through groove (581) opened on the side wall of the water tank (52), and a semiconductor cooling plate (582) is fixedly installed inside the through groove (581), and a heat dissipation fin (583) is fixedly installed at the hot end of the semiconductor cooling plate (582).

5. The recyclable water cooling structure for an injection molding machine according to claim 1, characterized in that: The driving mechanism (7) comprises a bidirectional threaded rod (71), the bidirectional threaded rod (71) being rotatably mounted inside the mounting groove (6), one end of the bidirectional threaded rod (71) passing through the mounting groove (6) and being fixedly connected to a driving motor (72), both ends of the outer wall of the bidirectional threaded rod (71) being threadedly connected to moving blocks (73), and the two groups of the half injection lower molds (3) being fixedly mounted on the tops of the two groups of the moving blocks (73), respectively.

6. The recyclable water cooling structure for an injection molding machine according to claim 5, characterized in that: The top of the workbench (1) is symmetrically provided with two groups of slide grooves (14) for limiting and guiding the moving block (73); the interiors of the two groups of slide grooves (14) are connected to the interior of the installation groove, and the side walls of the moving block (73) are slidably connected to the inner walls of the slide grooves (14).

7. The recyclable water cooling structure for an injection molding machine according to claim 1, characterized in that: The injection molding mechanism (10) comprises two groups of cylinders (101), the two groups of cylinders (101) are symmetrically fixedly mounted on the top of the top plate (9), the bottoms of the piston ends of the two groups of cylinders (101) penetrate the top plate (9) and are fixedly connected to a mounting plate (102), the bottom of the mounting plate (102) is fixedly mounted with an upper mold (103) used in conjunction with two groups of half injection lower molds (3), and an injection molding pipe (104) that penetrates the mounting plate (102) and the top plate (9) is fixedly connected at the center of the top of the upper mold (103).

8. The recyclable water cooling structure for an injection molding machine according to claim 1, characterized in that: One side of one group of the half-injection lower molds (3) is integrally formed with an arc-shaped protrusion (12), and one side of the other group of the half-injection lower molds (3) is provided with an arc-shaped groove (13) adapted to the arc-shaped protrusion (12), and the arc-shaped protrusion (12) is inserted into the interior of the arc-shaped groove (13).

9. The recyclable water cooling structure for an injection molding machine according to claim 1, characterized in that: Two groups of sliding blocks (11) are symmetrically fixedly installed on the bottom of the semi-injection lower mold (3), and the bottoms of the two groups of sliding blocks (11) are respectively slidably arranged on the top outer walls of the two groups of slide rails (2).

10. A recyclable water cooling method for an injection molding machine, comprising the following steps: Step 1: The driving motor (72) in the driving mechanism (7) drives the bidirectional threaded rod (71) to rotate, so that the moving blocks (73) threadedly connected to the outer walls of both ends of the bidirectional threaded rod (71) move relatively under the limit of the slide groove (14), so that the two groups of half injection lower molds (3) are spliced ​​along the slide rail (2) to form a mold cavity: Step 2: The piston ends of the two groups of cylinders (101) in the injection molding mechanism (10) on the top plate (9) are extended and retracted to drive the mounting plate (102) and the bottom upper mold (103) to descend, so that the upper mold (103) is inserted into the mold cavity formed by splicing the two groups of half injection molding lower molds (3), and the mounting plate (102) is covered on the top of the two groups of half injection molding lower molds (3), and the molten material is injected into the mold cavity through the injection molding tube (104) for injection molding; Step 3: After the injection molding is completed, the two water pumps (53) in the water cooling mechanism (5) are started, and the cooling water is transported to the corresponding water cooling shell (54) through the two water pumps (53) through the first telescopic hose and the water inlet port (55) connected thereto. After the cooling water enters the water cooling shell (54), the material in the mold cavity after the injection molding is completed is cooled down, thereby reducing the cooling waiting time of the molded material after the injection molding; Step 4: After the injection molded part is cooled, the water outlet port (56) can be opened by controlling the electromagnetic valve (57), so that the cooling water heated in the water cooling shell (54) flows out from the water cooling shell (54) and returns to the water tank (52) through the second telescopic hose. After the water in the water cooling shell (54) has flowed out, the electromagnetic valve (57) closes the water outlet port (56). (Alternatively, the cooling water can flow from the water tank (52) into the water cooling shell (54) through the first telescopic hose under the action of the water pump (53). After the injection molded part in the semi-injection lower mold (3) is cooled and heated, it flows back to the water tank (52) through the second telescopic hose, so that the cooling water circulates continuously to cool the injection molded part). The refrigeration components (58) on both sides of the water tank (52) cool the reflux cooling water, so that the cooling water in the water tank (52) can be easily recycled. The cold end of the semiconductor refrigeration plate (582) acts on the water flow inside the water tank (52), and the hot end dissipates heat outward through the heat dissipation fins (583); Step 5: After the injection molded part is solidified, the top half injection mold (3) is driven to separate from the splicing by two groups of moving blocks (73) in the driving mechanism (7), so that the two groups of half injection molds (3) slide and separate along the slide rail (2), and the first telescopic hose and the second telescopic hose move and retract along with the water-cooling shell (54) on the outer wall of the half injection mold (3), thereby exposing the injection molded part after being formed and cooled, so that the injection molded part can be easily demoulded and taken out.

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