Cooling device and cooling method for injection mold

Abstract

The invention provides an injection mold cooling device and a cooling method, and relates to the technical field of mold cooling equipment.The injection mold cooling device comprises an upper mold, a lower mold, a first cooling assembly and a second cooling assembly, the lower mold and the upper mold are correspondingly arranged and can move relatively, and a cavity can be defined by the upper mold and the lower mold; the first cooling assembly is arranged in the upper die and comprises a first cooling seat, a first cooling pipeline and a first impurity removal structure, the first cooling pipeline is arranged in the first cooling seat, and the first impurity removal structure is movably connected with the first cooling pipeline; the second cooling assembly is arranged in the lower die and comprises a second cooling seat, a second cooling pipeline and a second impurity removal structure, the second cooling pipeline is arranged in the second cooling seat, and the second impurity removal structure is movably connected with the second cooling pipeline; according to the cooling device for the injection mold, heat exchange between a cooling medium and the mold can be more efficient, and uniform cooling of the mold is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of mold cooling equipment, and in particular to an injection mold cooling device and a cooling method. Background Art

[0002] Generally, plastic molds are composed of two parts: a movable mold and a fixed mold. The movable mold is installed on the movable template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. In the process of injection molding, the molten plastic with a higher temperature is injected into the mold with a lower temperature through high pressure, and then cooled and solidified to obtain the desired product. The molding cycle is an important link in the molding process. However, 60% of the time in the molding cycle is used to cool the product. Whether the mold temperature is reasonable is directly related to the dimensional accuracy, appearance and internal quality of the molded plastic parts, as well as the production efficiency of the plastic parts.

[0003] The existing Chinese invention patent with publication number CN115071085A discloses a cooling device for a plastic mold, which specifically discloses: a cooling box, a cooling cavity for carrying a mold cavity is provided inside; a first circulation pipeline is laid in the cooling cavity and connected to a circulating cooler; a fixed plate is located in the cooling cavity and is laid above the first circulation pipeline; a plurality of telescopic tubes are arranged in a rectangular array on the fixed plate; a plurality of cooling plates are correspondingly arranged in the telescopic tubes, a second circulation pipeline is laid on the cooling plates, the second circulation pipeline in each telescopic tube is connected to the first circulation pipeline through a folded connecting tube, and the peripheral side of the cooling plate is connected to the inner wall of the inner sleeve of the telescopic tube; each telescopic tube drives the telescopic tube to extend and retract; the heat conducting member comprises: a plate body, a plurality of support seats, a plurality of heat conducting pin groups and a spring, and the spring is arranged between one end of the heat conducting pin group and the bottom surface of the support seat.

[0004] However, during the injection molding process that is subjected to high-frequency changes in temperature over a long period of time, the above-mentioned technical solution is prone to produce a large amount of scale, sediment and other impurities in the circulation pipeline, which reduces the thermal conductivity of the cooling water circuit and causes a decrease in the mold temperature control accuracy. As time goes by, the pipeline may gradually be blocked, seriously affecting the normal operation of the cooling system. Summary of the invention

[0005] Based on this, in order to solve the problem that a large amount of scale, sediment and other dirt are easily generated in the circulation pipeline during the injection molding process that is subjected to high-frequency changes in temperature for a long time, one of the purposes of the present invention is to provide an injection mold cooling device, and its specific technical solution is as follows:

[0006] A cooling device for an injection mold comprises an upper mold, a lower mold, a first cooling component and a second cooling component, wherein the lower mold is arranged corresponding to the upper mold and can move relatively, and the upper mold and the lower mold can define a cavity; the first cooling component is arranged in the upper mold, the first cooling component comprises a first cooling seat, a first cooling pipeline and a first impurity removal structure, the first cooling pipeline is arranged in the first cooling seat, and the first impurity removal structure is movably connected to the first cooling pipeline; the second cooling component is arranged in the lower mold, the second cooling component comprises a second cooling seat, a second cooling pipeline and a second impurity removal structure, the second cooling pipeline is arranged in the second cooling seat, and the second impurity removal structure is movably connected to the second cooling pipeline.

[0007] Furthermore, the first cooling circuit includes a first water inlet pipe, a first cooling water pipe, a second cooling water pipe and a first water outlet pipe, a first solenoid valve is installed in the first water inlet pipe, one end of the first cooling water pipe is connected and communicated with the first water inlet pipe, the second cooling water pipe is connected and communicated with an end of the first cooling water pipe away from the first water inlet pipe, an end of the second cooling water pipe away from the first cooling water pipe is connected and communicated with the first water outlet pipe, the second cooling water pipe is arranged in a U shape, the first water inlet pipe and the first water outlet pipe are arranged on the same side of the first cooling seat and respectively pass through the first cooling seat.

[0008] Furthermore, the first impurity removal structure includes a first impurity removal piece, a first elastic piece, a second impurity removal piece and a second elastic piece, one end of the first elastic piece is fixedly connected to an end of the first cooling water pipe close to the first water inlet pipe, an end of the first elastic piece away from the first water inlet pipe is fixedly connected to the first elastic piece, the second elastic piece is fixedly connected to the inner wall of the second cooling water pipe, the second impurity removal piece is fixedly connected to the second elastic piece, a plurality of first spiral coils for supplying power to the second elastic piece are installed on the first cooling water pipe, the first impurity removal piece is made of magnetic material, and each first spiral coil is electrically connected to the second elastic piece.

[0009] Furthermore, a first electromagnetic driving component and a first rotating brush are provided in the second debris removing component, the first electromagnetic driving component is embedded in the second debris removing component, a first iron sheet is provided in the first rotating brush, the first rotating brush is rotatably connected to the second debris removing component through a first connecting shaft, and the first rotating brush abuts against the inner wall of the second cooling water pipe.

[0010] Furthermore, the second cooling pipeline includes a second water inlet pipe, a third cooling water pipe, a fourth cooling water pipe and a second water outlet pipe, a second solenoid valve is installed in the second water inlet pipe, one end of the third cooling water pipe is connected and communicated with the second water inlet pipe, the fourth cooling water pipe is connected and communicated with an end of the third cooling water pipe away from the second water inlet pipe, an end of the fourth cooling water pipe away from the third cooling water pipe is connected and communicated with the second water outlet pipe, the fourth cooling water pipe is arranged in a U shape, the second water inlet pipe and the second water outlet pipe are arranged on the same side of the second cooling seat and respectively pass through the second cooling seat.

[0011] Furthermore, the second impurity removal structure includes a third impurity removal piece, a third elastic piece, a fourth impurity removal piece and a fourth elastic piece, one end of the third elastic piece is fixedly connected to an end of the third cooling water pipe close to the second water inlet pipe, an end of the third elastic piece away from the second water inlet pipe is fixedly connected to the third elastic piece, the fourth elastic piece is fixedly connected to the inner wall of the fourth cooling water pipe, the fourth impurity removal piece is fixedly connected to the fourth elastic piece, a plurality of second spiral coils for supplying power to the fourth elastic piece are installed on the third cooling water pipe, the third impurity removal piece is made of magnetic material, and each second spiral coil is electrically connected to the fourth elastic piece.

[0012] Furthermore, a second electromagnetic driving component and a second rotating brush are provided in the fourth debris removing component, the second electromagnetic driving component is embedded in the fourth debris removing component, a second iron sheet is provided in the second rotating brush, the second rotating brush is rotatably connected to the fourth debris removing component through a second connecting shaft, and the second rotating brush abuts against the inner wall of the fourth cooling water pipe.

[0013] Furthermore, a bottom plate is provided on the outer side surface of the lower mold near the bottom end, a support plate is provided on the bottom plate, a slot is provided on the support plate, a connecting rod is provided in the slot, sliding blocks are provided at both ends of the connecting rod, a fan is provided on the sliding block, a fixing structure is provided on the sliding block, and the fixing structure can be detachably connected to the support plate.

[0014] Furthermore, the fixed structure includes two connecting plates, a locking plate and a locking piece, the two connecting plates are fixedly connected to the sliding block, the locking plate is arranged between the two connecting plates and the two connecting plates are slidably connected, the locking piece is arranged on the locking plate, and the support plate is provided with a plurality of locking holes, the locking piece is adapted to each locking hole, and the locking plate can abut against a side of the support plate away from the lower mold.

[0015] Another object of the present invention is to provide an injection mold cooling method.

[0016] A method for cooling an injection mold, applied to the above-mentioned injection mold cooling device, comprises the following steps:

[0017] Set the upper die and the lower die accordingly and close them;

[0018] Inject molten plastic material into the cavity, allowing it to cool and solidify in the mold;

[0019] The first cooling assembly disposed in the upper mold is started, and the cooling medium is circulated through the first cooling pipeline inside the first cooling seat to remove the heat of the upper mold and the upper half of the cavity; the second cooling assembly disposed in the lower mold is started, and the cooling medium is circulated through the second cooling pipeline inside the second cooling seat to remove the heat of the lower mold and the lower half of the cavity;

[0020] Perform impurity removal operations on the first cooling pipeline and the second cooling pipeline respectively by using the first impurity removal structure and the second impurity removal structure;

[0021] When the plastic product is completely cooled and solidified, the operation of the first cooling assembly and the second cooling assembly is stopped, the upper mold and the lower mold are relatively moved and separated, and the cooled and solidified plastic product is taken out.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting the first cooling component, the upper mold can reach the ideal cooling temperature faster, which helps to shorten the injection molding cycle and improve production efficiency; the first cooling component includes a first cooling seat, a first cooling pipeline and a first impurity removal structure, and the first impurity removal structure is movably connected to the first cooling pipeline, which can effectively remove scale, sediment and other dirt in the pipeline during the circulation of the cooling medium, ensure the continuous unobstructed flow of the first cooling pipeline, and avoid pipeline blockage and cooling efficiency reduction caused by dirt accumulation. By setting the second cooling component, the lower mold can also reach the ideal cooling temperature faster, which helps to shorten the injection molding cycle and improve production efficiency; the second cooling component includes a second cooling seat, a second cooling pipeline and a second impurity removal structure, which is similar to the first cooling component, ensuring the cleanliness and efficiency of the entire cooling system and improving the overall cooling performance of the mold. The injection mold cooling device of the present invention makes the heat exchange between the cooling medium and the mold more efficient through efficient impurity removal and cooling functions, ensures uniform cooling of the mold, and helps to reduce the deformation and shrinkage of the injection molded parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention may be further understood from the following description in conjunction with the accompanying drawings, in which the components are not necessarily drawn to scale, but emphasis is placed on illustrating the principles of the embodiments, and in different views, the same reference numerals designate corresponding parts.

[0024] Figure 1 It is a structural schematic diagram of the injection mold cooling device of the present invention;

[0025] Figure 2 is a cross-sectional view of the first cooling assembly of the present invention;

[0026] Figure 3 yes Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0027] Figure 4 yes Figure 2 Schematic diagram of the enlarged structure of B;

[0028] Figure 5 is a cross-sectional view of the second cooling assembly of the present invention;

[0029] Figure 6 yes Figure 5 Schematic diagram of the enlarged structure of C in the middle;

[0030] Figure 7 yes Figure 5 Schematic diagram of the enlarged structure of D in the middle;

[0031] Figure 8 yes Figure 1 Schematic diagram of the enlarged structure of E;

[0032] Fig. 9 It is a schematic diagram of the combined structure of the sliding block, the fan and the fixed structure of the present invention;

[0033] Fig.10 It is a schematic flow chart of the injection mold cooling method of the present invention.

[0034] Description of reference numerals:

[0035] 1. Upper die; 2. Lower die; 21. Bottom plate; 22. Support plate; 221. Slot; 222. Locking hole; 23. Connecting rod; 24. Sliding block; 25. Fan; 26. Fixed structure; 261. Connecting plate; 262. Positioning plate; 263. Locking piece; 3. First cooling assembly; 31. First cooling seat; 32. First cooling pipeline; 321. First water inlet pipe; 322. First cooling water pipe; 323. Second cooling water pipe; 324. First water outlet pipe; 325. First solenoid valve; 33. First impurity removal structure; 331. First impurity removal part; 332. First elastic part; 333. Second impurity removal part; 334. Second elastic part; 335. First Electromagnetic drive component; 336, first rotating brush; 337, first iron sheet; 338, first connecting shaft; 34, first spiral coil; 4, second cooling assembly; 41, second cooling seat; 42, second cooling pipeline; 421, second water inlet pipe; 422, third cooling water pipe; 423, fourth cooling water pipe; 424, second water outlet pipe; 425, second solenoid valve; 43, second impurity removal structure; 431, third impurity removal component; 432, third elastic component; 433, fourth impurity removal component; 434, fourth elastic component; 435, second electromagnetic drive component; 436, second rotating brush; 437, second iron sheet; 438, second connecting shaft; 44, second spiral coil. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with its embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not limit the adsorption scope of the present invention.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0039] The “first” and “second” mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0040] like Figure 1-Figure 7 As shown, an injection mold cooling device in one embodiment of the present invention includes an upper mold 1, a lower mold 2, a first cooling component 3 and a second cooling component 4. The lower mold 2 is arranged corresponding to the upper mold 1 and can move relatively. The upper mold 1 and the lower mold 2 can define a cavity; the first cooling component 3 is arranged in the upper mold 1, the first cooling component 3 includes a first cooling seat 31, a first cooling pipeline 32 and a first impurity removal structure 33, the first cooling pipeline 32 is arranged in the first cooling seat 31, and the first impurity removal structure 33 is movably connected to the first cooling pipeline 32; the second cooling component 4 is arranged in the lower mold 2, the second cooling component 4 includes a second cooling seat 41, a second cooling pipeline 42 and a second impurity removal structure 43, the second cooling pipeline 42 is arranged in the second cooling seat 41, and the second impurity removal structure 43 is movably connected to the second cooling pipeline 42. By setting the first cooling component 3, the upper mold 1 can reach the ideal cooling temperature more quickly, which helps to shorten the injection molding cycle and improve production efficiency; the first cooling component 3 includes a first cooling seat 31, a first cooling pipeline 32 and a first impurity removal structure 33, and the first impurity removal structure 33 is movably connected to the first cooling pipeline 32, which can effectively remove scale, sediment and other dirt in the pipeline during the circulation of the cooling medium, ensuring the continuous smooth flow of the first cooling pipeline 32, and avoiding pipeline blockage and reduced cooling efficiency due to dirt accumulation. By setting the second cooling component 4, the lower mold 2 can also reach the ideal cooling temperature more quickly, which helps to shorten the injection molding cycle and improve production efficiency; the second cooling component 4 includes a second cooling seat 41, a second cooling pipeline 42 and a second impurity removal structure 43, which, similar to the first cooling component 3, ensures the cleanliness and efficiency of the entire cooling system and improves the overall cooling performance of the mold.

[0041] See also Figure 2-Figure 4 As a preferred embodiment of the present invention, it may also have the following additional technical features: the first cooling pipeline 32 includes a first water inlet pipe 321, a first cooling water pipe 322, a second cooling water pipe 323 and a first water outlet pipe 324, a first solenoid valve 325 is installed in the first water inlet pipe 321, one end of the first cooling water pipe 322 is connected to and communicated with the first water inlet pipe 321, the second cooling water pipe 323 is connected to and communicated with an end of the first cooling water pipe 322 away from the first water inlet pipe 321, an end of the second cooling water pipe 323 away from the first cooling water pipe 322 is connected to and communicated with the first water outlet pipe 324, the second cooling water pipe 323 is U-shaped, the first water inlet pipe 321 and the first water outlet pipe 324 are arranged on the same side of the first cooling seat 31 and respectively pass through the first cooling seat 31. When the first cooling pipeline 32 is in operation, the coolant flows from the first water inlet pipe 321 into the first cooling water pipe 322 and the second cooling water pipe 323 and is then discharged along the first water outlet pipe 324 , thereby circulating in the pipeline for cooling.

[0042] As a preferred embodiment of the present invention, it may also have the following additional technical features: the first impurity removing structure 33 includes a first impurity removing part 331, a first elastic part 332, a second impurity removing part 333 and a second elastic part 334, one end of the first elastic part 332 is fixedly connected to an end of the first cooling water pipe 322 close to the first water inlet pipe 321, an end of the first elastic part 332 away from the first water inlet pipe 321 is fixedly connected to the first elastic part 332, the second elastic part 334 is fixedly connected to the inner wall of the second cooling water pipe 323, the second impurity removing part 333 is fixedly connected to the second elastic part 334, a plurality of first spiral coils 34 for supplying power to the second elastic part 334 are installed on the first cooling water pipe 322, the first impurity removing part 331 is made of magnetic material, and each first spiral coil 34 is electrically connected to the second elastic part 334. During use, due to the intermittent opening and closing of the first solenoid valve 325, the coolant will enter the first cooling water pipe 322 in a pulsed manner, pushing the first impurity removal member 331 to move rightward, and when the first solenoid valve 325 is closed, the coolant stops flowing into the first cooling water pipe 322, and the first elastic member 332 can pull the first impurity removal member 331 to reset. Therefore, during the process of the coolant pulse being discharged into the first cooling water pipe 322, the first impurity removal member 331 can move back and forth in the first cooling water pipe 322, thereby scraping off the rust, scale and other dirt attached to the inner wall of the first cooling water pipe 322, and discharging them with the coolant, preventing the dirt from accumulating in the first cooling water pipe 322 and causing blockage; during the process of the first impurity removal member 331 made of magnetic material moving back and forth in the first cooling water pipe 322, it will sequentially enter and exit each first spiral coil 34, causing the magnetic flux in each first spiral coil 34 to change, thereby causing each first spiral coil 34 to sequentially generate an induced current, and finally energizing the second elastic member 334. Since the first impurity removing part 331 completely enters and exits the first spiral coil 34 once each time, and after the first impurity removing part 331 leaves a certain first spiral coil 34, the magnetic flux of the first spiral coil 34 is zero and no longer generates an induced current. Therefore, in the process of the first impurity removing part 331 passing through each first spiral coil 34, only a section of induced current will be generated in each spiral coil, and the second elastic part 334 will be energized for a short period of time. Whenever the second elastic part 334 is energized, it will shrink and synchronously pull the second impurity removing part 333 to move. When the second elastic part 334 is powered off, it can stretch under its own elastic force and push the second impurity removing part 333 to reset. In this way, each second elastic part 334 can be continuously extended and retracted, and the second impurity removing part 333 can be driven to move back and forth in the second cooling water pipe 323, so that the dirt attached to the second cooling water pipe 323 can be scraped off and discharged with the coolant, thereby maintaining a good permeability effect of the second cooling water pipe 323 and preventing blockage.

[0043] In this embodiment, the first debris removing member 331 is configured as a scraper, the second elastic member 334 is configured as a conductive spring, and an outer sleeve thereof is provided with an insulating rubber sleeve. The distance between every two adjacent first spiral coils 34 is greater than or equal to 55 mm. By providing a plurality of first spiral coils 34 and arranging each first spiral coil 34 at a certain interval, an induced current can be transmitted to each second elastic member 334 to cause the second elastic member 334 to expand and contract, and at the same time, each second elastic member 334 can be energized in turn, thereby pulling each second debris removing member 333 to move back and forth in turn, thereby preventing a large resistance to the coolant from affecting the flow of the coolant.

[0044] Since the second cooling water pipe 323 has a long pipeline and almost covers the entire first cooling pipe 32, the second cooling water pipe 323 has the most dirt. As a preferred embodiment of the present invention, it can also have the following additional technical features: the second impurity removing member 333 is provided with a first electromagnetic driving member 335 and a first rotating brush 336, the first electromagnetic driving member 335 is embedded in the second impurity removing member 333, the first rotating brush 336 is provided with a first iron sheet 337, the first rotating brush 336 is rotatably connected to the second impurity removing member 333 through a first connecting shaft 338, and the first rotating brush 336 abuts against the inner wall of the second cooling water pipe 323. During operation, since the magnetic first impurity removing member 331 passes through each first spiral coil 34 in turn, each first spiral coil 34 generates a section of induced current in turn, and each first spiral coil 34 has a certain distance between them, the first electromagnetic driving member 335 is coupled with each first spiral coil 34, and the first electromagnetic driving member 335 can be passed through a pulsed induced current, that is, the first electromagnetic driving member 335 is continuously turned on and off. Whenever the first electromagnetic driving component 335 is energized, magnetism will be generated and the first iron sheet 337 will be attracted to fit therewith, thereby driving the first rotating brush 336 to rotate in the forward direction. When the first electromagnetic driving component 335 is powered off, the first rotating brush 336 will be pushed to rotate in the reverse direction and reset. In this way, the first rotating brush 336 can continuously rotate back and forth and clean the inner wall of the second cooling water pipe 323, thereby cleaning the remaining dirt and improving the cleaning strength, cleaning effect and cleaning efficiency.

[0045] See also Figure 5-Figure 7As a preferred embodiment of the present invention, it may also have the following additional technical features: the second cooling pipeline 42 includes a second water inlet pipe 421, a third cooling water pipe 422, a fourth cooling water pipe 423 and a second water outlet pipe 424, a second solenoid valve 425 is installed in the second water inlet pipe 421, one end of the third cooling water pipe 422 is connected and communicated with the second water inlet pipe 421, the fourth cooling water pipe 423 is connected and communicated with an end of the third cooling water pipe 422 away from the second water inlet pipe 421, an end of the fourth cooling water pipe 423 away from the third cooling water pipe 422 is connected and communicated with the second water outlet pipe 424, the fourth cooling water pipe 423 is U-shaped, the second water inlet pipe 421 and the second water outlet pipe 424 are arranged on the same side of the second cooling seat 41 and respectively pass through the second cooling seat 41. When the second cooling pipeline 42 is in operation, the coolant flows from the second water inlet pipe 421 into the third cooling water pipe 422 and the fourth cooling water pipe 423 and is then discharged along the second water outlet pipe 424 , thereby circulating in the pipeline for cooling.

[0046] As a preferred embodiment of the present invention, it may also have the following additional technical features: the second impurity removal structure 43 includes a third impurity removal member 431, a third elastic member 432, a fourth impurity removal member 433 and a fourth elastic member 434, one end of the third elastic member 432 is fixedly connected to one end of the third cooling water pipe 422 close to the second water inlet pipe 421, one end of the third elastic member 432 away from the second water inlet pipe 421 is fixedly connected to the third elastic member 432, the fourth elastic member 434 is fixedly connected to the inner wall of the fourth cooling water pipe 423, the fourth impurity removal member 433 is fixedly connected to the fourth elastic member 434, a plurality of second spiral coils 44 for supplying power to the fourth elastic member 434 are installed on the third cooling water pipe 422, the third impurity removal member 431 is made of magnetic material, and each second spiral coil 44 is electrically connected to the fourth elastic member 434. Its working principle is the same as that of the second impurity removal structure 43, which will not be repeated here. In this embodiment, the third debris removing member 431 is also configured as a scraper, and the fourth elastic member 434 is configured as a conductive spring, whose outer sleeve is provided with an insulating rubber sleeve, and the distance between every two adjacent second spiral coils 44 is greater than or equal to 55 mm. By arranging multiple second spiral coils 44 and arranging each second spiral coil 44 at a certain interval, an induced current can be transmitted to each fourth elastic member 434 to make the fourth elastic member 434 expand and contract, and at the same time, each fourth elastic member 434 can be energized in turn, thereby pulling each fourth debris removing member 433 to move back and forth in turn, thereby preventing a large resistance to the coolant from affecting the flow of the coolant.

[0047] As a preferred embodiment of the present invention, it may also have the following additional technical features: a second electromagnetic driving member 435 and a second rotating brush 436 are arranged in the fourth impurity removing member 433, the second electromagnetic driving member 435 is embedded in the fourth impurity removing member 433, a second iron sheet 437 is arranged in the second rotating brush 436, the second rotating brush 436 is rotatably connected to the fourth impurity removing member 433 through a second connecting shaft 438, and the second rotating brush 436 abuts against the inner wall of the fourth cooling water pipe 423. During operation, since the magnetic third impurity removing member 431 passes through each second spiral coil 44 in turn, each second spiral coil 44 generates a section of induced current in turn, and each second spiral coil 44 has a certain distance between them, the second electromagnetic driving member 435 is coupled with each second spiral coil 44, so that the second electromagnetic driving member 435 can be fed with a pulsed induced current, that is, the second electromagnetic driving member 435 is continuously powered on and off. Whenever the second electromagnetic driving component 435 is energized, magnetism will be generated and the second iron sheet 437 will be attracted to fit therewith, thereby driving the second rotating brush 436 to rotate in the forward direction. When the second electromagnetic driving component 435 is de-energized, the second rotating brush 436 will be pushed to rotate in the reverse direction and reset. In this way, the second rotating brush 436 can continuously rotate back and forth and clean the inner wall of the fourth cooling water pipe 423, thereby cleaning the remaining dirt and improving the cleaning strength, cleaning effect and cleaning efficiency.

[0048] See also Figure 8-Figure 9 As a preferred embodiment of the present invention, it may also have the following additional technical features: a bottom plate 21 is provided on the outer side of the lower mold 2 near the bottom end, a support plate 22 is provided on the bottom plate 21, a slot 221 is provided on the support plate 22, a connecting rod 23 is provided in the slot 221, sliding blocks 24 are sleeved at both ends of the connecting rod 23, a fan 25 is provided on the sliding block 24, a fixed structure 26 is provided on the sliding block 24, and the fixed structure 26 can be detachably connected to the support plate 22. The setting of the fan 25 can speed up the cooling speed of the raw material, so that it can be quickly formed, and can blow air to cool the designated positions of the upper mold 1 and the lower mold 2 as needed, and increase the blowing range, thereby speeding up the raw material forming speed.

[0049] As a preferred embodiment of the present invention, it may also have the following additional technical features: the fixed structure 26 includes two connecting plates 261, a locking plate 262 and a locking piece 263, the two connecting plates 261 are fixedly connected to the sliding block 24, the locking plate 262 is arranged between the two connecting plates 261 and the two connecting plates 261 are slidably connected, the locking piece 263 is arranged on the locking plate 262, and a plurality of locking holes 222 are arranged on the support plate 22, the locking piece 263 is adapted to each locking hole 222, and the locking plate 262 can abut against the side of the support plate 22 away from the lower mold 2. After fixing the position between the upper mold 1 and the lower mold 2, the raw material is passed into the cavity between the upper mold 1 and the lower mold 2. At this time, the sliding block 24 is moved along the connecting rod 23 installed inside the slot 221 to drive the fan 25 to move. After the fan 25 is moved to the required position, the positioning plate 262 is moved upward between the two connecting plates 261 so that one end of the positioning plate 262 is close to the outer side surface of the support plate 22 close to the upper edge of the slot 221. Then, one end of the locking piece 263 is passed through the positioning plate 262 and rotated to the corresponding locking hole 222. The position of the positioning plate 262 can be fixed, thereby fixing the position of the sliding block 24, and then fixing the position of the fan 25.

[0050] See also Fig.10 The present embodiment also provides an injection mold cooling method, which is applied to the injection mold cooling device as described above, and includes the following steps:

[0051] S1, setting the upper die 1 and the lower die 2 correspondingly and closing them;

[0052] S2, injecting molten plastic material into the cavity, allowing it to cool and solidify in the mold;

[0053] S3, start the first cooling assembly 3 disposed in the upper mold 1, and circulate the cooling medium through the first cooling pipeline 32 inside the first cooling seat 31 to remove the heat of the upper mold 1 and the upper half of the cavity; start the second cooling assembly 4 disposed in the lower mold 2, and circulate the cooling medium through the second cooling pipeline 42 inside the second cooling seat 41 to remove the heat of the lower mold 2 and the lower half of the cavity;

[0054] S4. Perform impurity removal operations on the first cooling pipeline 32 and the second cooling pipeline 42 respectively through the first impurity removal structure 33 and the second impurity removal structure 43; allow cleaning without interrupting the cooling process to ensure smooth flow of the cooling medium.

[0055] S5. When the plastic product is completely cooled and solidified, the operation of the first cooling assembly 3 and the second cooling assembly 4 is stopped, the upper mold 1 and the lower mold 2 are relatively moved and separated, and the cooled and solidified plastic product is taken out.

[0056] The injection mold cooling device of this embodiment has a reasonable structural design and is easy to use. This structure can also be used for other equipment with similar usage requirements. In this embodiment, the injection mold cooling device uses efficient impurity removal and cooling functions to make the heat exchange between the cooling medium and the mold more efficient, ensuring uniform cooling of the mold and helping to reduce deformation and shrinkage of injection molded parts.

[0057] In the description of the above embodiments, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, "several" and "multiple" mean more than one, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" and "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0058] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction between the combinations of these technical features, they should be considered to be within the scope recorded in this specification.

[0059] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An injection mold cooling device, characterized in that: include: upper mold; A lower die, the lower die is arranged corresponding to the upper die and can move relatively, and the upper die and the lower die can define a cavity; A first cooling assembly, the first cooling assembly is arranged in the upper mold, the first cooling assembly comprises a first cooling seat, a first cooling pipeline and a first impurity removal structure, the first cooling pipeline is arranged in the first cooling seat, and the first impurity removal structure is movably connected to the first cooling pipeline; The second cooling assembly is arranged in the lower mold, the second cooling assembly includes a second cooling seat, a second cooling pipeline and a second impurity removal structure, the second cooling pipeline is arranged in the second cooling seat, and the second impurity removal structure is movably connected to the second cooling pipeline.

2. The injection mold cooling device according to claim 1, characterized in that: The first cooling pipeline includes a first water inlet pipe, a first cooling water pipe, a second cooling water pipe and a first water outlet pipe. A first solenoid valve is installed in the first water inlet pipe. One end of the first cooling water pipe is connected and communicated with the first water inlet pipe, the second cooling water pipe is connected and communicated with an end of the first cooling water pipe away from the first water inlet pipe, and an end of the second cooling water pipe away from the first cooling water pipe is connected and communicated with the first water outlet pipe. The second cooling water pipe is arranged in a U shape, and the first water inlet pipe and the first water outlet pipe are arranged on the same side of the first cooling seat and respectively pass through the first cooling seat.

3. The injection mold cooling device according to claim 2, characterized in that: The first impurity removing structure includes a first impurity removing part, a first elastic part, a second impurity removing part and a second elastic part, one end of the first elastic part is fixedly connected to an end of the first cooling water pipe close to the first water inlet pipe, one end of the first elastic part away from the first water inlet pipe is fixedly connected to the first elastic part, the second elastic part is fixedly connected to the inner wall of the second cooling water pipe, the second impurity removing part is fixedly connected to the second elastic part, a plurality of first spiral coils for supplying power to the second elastic part are installed on the first cooling water pipe, the first impurity removing part is made of magnetic material, and each first spiral coil is electrically connected to the second elastic part.

4. The injection mold cooling device according to claim 3, characterized in that: The second debris removing component is provided with a first electromagnetic driving component and a first rotating brush. The first electromagnetic driving component is embedded in the second debris removing component. The first rotating brush is provided with a first iron sheet. The first rotating brush is rotatably connected to the second debris removing component via a first connecting shaft. The first rotating brush abuts against the inner wall of the second cooling water pipe.

5. The injection mold cooling device according to claim 1, characterized in that: The second cooling pipeline includes a second water inlet pipe, a third cooling water pipe, a fourth cooling water pipe and a second water outlet pipe. A second solenoid valve is installed in the second water inlet pipe. One end of the third cooling water pipe is connected and communicated with the second water inlet pipe, the fourth cooling water pipe is connected and communicated with an end of the third cooling water pipe away from the second water inlet pipe, and an end of the fourth cooling water pipe away from the third cooling water pipe is connected and communicated with the second water outlet pipe. The fourth cooling water pipe is U-shaped. The second water inlet pipe and the second water outlet pipe are arranged on the same side of the second cooling seat and respectively pass through the second cooling seat.

6. The injection mold cooling device according to claim 5, characterized in that: The first impurity removing structure includes a third impurity removing member, a third elastic member, a fourth impurity removing member and a fourth elastic member, one end of the third elastic member is fixedly connected to an end of the third cooling water pipe close to the second water inlet pipe, an end of the third elastic member away from the second water inlet pipe is fixedly connected to the third elastic member, the fourth elastic member is fixedly connected to the inner wall of the fourth cooling water pipe, the fourth impurity removing member is fixedly connected to the fourth elastic member, a plurality of second spiral coils for supplying power to the fourth elastic member are installed on the third cooling water pipe, the third impurity removing member is made of magnetic material, and each second spiral coil is electrically connected to the fourth elastic member.

7. The injection mold cooling device according to claim 6, characterized in that: The fourth debris removing component is provided with a second electromagnetic driving component and a second rotating brush, the second electromagnetic driving component is embedded in the fourth debris removing component, the second rotating brush is provided with a second iron sheet, the second rotating brush is rotatably connected to the fourth debris removing component via a second connecting shaft, and the second rotating brush abuts against the inner wall of the fourth cooling water pipe.

8. The injection mold cooling device according to claim 1, characterized in that: A bottom plate is provided on the outer side surface of the lower mold near the bottom end, a support plate is provided on the bottom plate, a slot is provided on the support plate, a connecting rod is provided in the slot, sliding blocks are provided at both ends of the connecting rod, a fan is provided on the sliding block, a fixing structure is provided on the sliding block, and the fixing structure can be detachably connected to the support plate.

9. The injection mold cooling device according to claim 8, characterized in that: The fixing structure includes two connecting plates, a locking plate and a locking piece. The two connecting plates are fixedly connected to the sliding block. The locking plate is arranged between the two connecting plates and the two connecting plates are slidably connected. The locking piece is arranged on the locking plate. A plurality of locking holes are arranged on the support plate. The locking piece is adapted to each locking hole. The locking plate can abut against a side of the support plate away from the lower mold.

10. A method for cooling an injection mold, applied to the injection mold cooling device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Set the upper die and the lower die accordingly and close them; Inject molten plastic material into the cavity, allowing it to cool and solidify in the mold; The first cooling assembly disposed in the upper mold is started, and the cooling medium is circulated through the first cooling pipeline inside the first cooling seat to remove the heat of the upper mold and the upper half of the cavity; the second cooling assembly disposed in the lower mold is started, and the cooling medium is circulated through the second cooling pipeline inside the second cooling seat to remove the heat of the lower mold and the lower half of the cavity; Perform impurity removal operations on the first cooling pipeline and the second cooling pipeline respectively by using the first impurity removal structure and the second impurity removal structure; When the plastic product is completely cooled and solidified, the operation of the first cooling assembly and the second cooling assembly is stopped, the upper mold and the lower mold are relatively moved and separated, and the cooled and solidified plastic product is taken out.

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