Plastic product injection mold with composite heat dissipation mechanism
By setting a composite heat dissipation mechanism of rotating cooling pipes and cooling pipes inside the mold, the problem of uneven temperature in the mold cooling channels is solved, thereby improving the hardening uniformity and molding efficiency of the injection molded parts.
Patent Information
- Application Number
- CN202520541344.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-26
AI Technical Summary
In the existing mold injection molding process, uneven temperature in the cooling water channel leads to uneven hardening of the injection molded parts, increasing the scrap rate.
A composite heat dissipation mechanism is designed. By setting a rotating cooling pipe inside the mold, the coolant is alternately positioned between the first and second cooling chambers. Combined with the cooling pipe, the temperature is homogenized, ensuring uniform cooling temperature at all locations within the mold.
It achieves uniform hardening of injection molded parts, improves the molding efficiency of molten plastic and the cooling effect in the molding tank, and reduces the scrap rate.
Smart Images
Figure CN223877479U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates specifically to mould technical field, specifically a kind of plastic product injection mould with composite heat dissipation mechanism. BACKGROUND
[0002] Plastic mould is matched with plastic forming machine in plastic processing industry, and is the tool that gives plastic product with complete configuration and accurate size. Because plastic variety and processing method are various, the structure of plastic forming machine and plastic product is various, and the type and structure of plastic mould are also various.
[0003] In the existing mould in injection molding production process, generally through natural waiting or through water flow to mold cooling forming, the existing water cooling structure, generally needs after mold closing, through artificial starting circulating water pump to carry out heat dissipation treatment, and the existing circulating water channel is generally annular structure, and two ends are provided with water inlet and water outlet, water flow enters and flows from cooling water channel to water outlet, cooling water continuously carries out heat exchange in flowing process, but in cooling water flowing process, especially in the early stage of cooling, cooling water flows in circulating water channel and temperature changes due to heat exchange process, so that the temperature of each position in circulating water channel is different, the position of injection molding part corresponding to the front section of circulating water channel is cooled and hardened first, and the position of injection molding part corresponding to the rear section of circulating water channel is cooled and hardened later, which can easily cause uneven hardness of injection molding part, and increase the scrap rate. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at providing a kind of plastic product injection mould with composite heat dissipation mechanism to solve the problems raised in the above background.
[0005] To achieve the above object, the utility model provides the following technical scheme:
[0006] A kind of plastic product injection mould with composite heat dissipation mechanism, including top plate, bottom plate, lower mould mechanism and upper mould mechanism, the top plate and the bottom plate are connected by support column, the upper mould mechanism includes upper mould and several cooling pipes arranged in the upper mould, the bottom of the upper mould is provided with forming groove;The cooling pipe is rotatably installed in the inside of the upper mould, cooling pipe is installed with baffle in the inside, the baffle divides the inside space of cooling pipe into first cooling cavity and second cooling cavity;Cooling pipe is located on one side of the inside of the upper mould and is provided with cooling pipe, and the cooling pipe is one-to-one corresponding with the cooling pipe.
[0007] As a further scheme of the utility model: one end of the cooling pipe is installed with gear, the outside of the upper mould is slidably installed with rack, and the rack is engaged with the gear;The outside of the upper mould is also installed with protective cover, the protective cover is fixedly installed with telescopic rod, and the telescopic end of the telescopic rod is fixedly connected with the rack.
[0008] As a further scheme of the utility model: the top plate is provided with a first feeding port, the upper die is fixedly installed at the bottom of the top plate, the upper die is provided with a second feeding port, one end of the second feeding port is communicated with the first feeding port, and the other end of the second feeding port is communicated with the forming groove.
[0009] As a further scheme of the utility model: the top plate is provided with a first feeding port, the upper die is fixedly installed at the bottom of the top plate, the upper die is provided with a second feeding port, one end of the second feeding port is communicated with the first feeding port, and the other end of the second feeding port is communicated with the forming groove.
[0010] As a further scheme of the utility model: the lower die mechanism comprises a first lifting seat, a second lifting seat and a lower die, a gas cylinder is fixedly installed on the bottom plate, the telescopic end of the gas cylinder is connected with a second ejector rod, and the second ejector rod is connected with the first lifting seat.
[0011] As a further scheme of the utility model: at least one guide column is arranged between the first lifting seat and the upper die, one end of the guide column is fixedly connected with the upper die, the other end of the guide column is slidingly connected with the first lifting seat, and the lower die is slidingly connected with the guide column.
[0012] As a further scheme of the utility model: the second lifting seat is arranged between the first lifting seat and the lower die, a thimble is fixedly installed at the side of the second lifting seat, the upper end of the thimble penetrates the side of the lower die and extends out, a connecting spring is sleeved on the rod segment between the second lifting seat and the lower die of the thimble, a first ejector rod is further fixedly installed at the bottom of the second lifting seat, the lower end of the first ejector rod penetrates the first lifting seat and extends downward, and the first ejector rod is slidingly connected with the first lifting seat.
[0013] Compared with the prior art, the utility model has the advantages that: the utility model sets up the cooling pipe and the cooling pipe in the upper die and constitutes the composite heat dissipation mechanism, in the process of heat dissipation and cooling of the plastic melt in the mold, the position of the first cooling cavity and the second cooling cavity is changed by rotating the cooling pipe, the temperature of the cooling liquid is reduced, the rotating cooling pipe is arranged, the cooling temperature at each position in the mold is relatively uniform, the hardening uniformity of the injection molding part is ensured, the cooling effect of the plastic melt in the forming groove is improved, and the forming efficiency of the plastic melt is improved. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a structure schematic view of the plastic product injection mold with the composite heat dissipation mechanism.
[0015] Figure 2 It is a front view of the plastic product injection mold with the composite heat dissipation mechanism.
[0016] Figure 3 The side view of the injection mold for the plastic product with the composite heat dissipation mechanism.
[0017] Figure 4 The structure diagram of the upper mold mechanism in the injection mold for the plastic product with the composite heat dissipation mechanism Figure 1 .
[0018] Figure 5 The structure diagram of the upper mold mechanism in the injection mold for the plastic product with the composite heat dissipation mechanism Figure 2 .
[0019] Figure 6 The sectional view of the upper mold mechanism in the injection mold for the plastic product with the composite heat dissipation mechanism.
[0020] In the figure: 10-top plate, 11-first feeding port, 12-air inlet seat, 13-air outlet seat, 14-supporting column, 20-bottom plate, 30-cylinder, 40-lower mold mechanism, 41-first lifting seat, 42-second lifting seat, 43-lower mold, 44-first ejector pin, 45-guiding column, 46-second ejector pin, 47-connecting spring, 50-upper mold mechanism, 51-upper mold, 511-second feeding port, 512-molding groove, 52-protective cover, 53-cooling pipe, 531-baffle, 54-gear, 55-rack, 56-telescopic rod, 57-air inlet, 58-air outlet, 59-cooling pipe. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.
[0022] Please refer to Figures 1-6The utility model discloses an embodiment of a kind of plastic product injection mould with composite heat dissipation mechanism, including top plate 10, bottom plate 20, lower mould mechanism 40 and upper mould mechanism 50, the top plate 10 with the bottom plate 20 are connected by support column 14, the lower mould mechanism 40 and upper mould mechanism 50 are set between the top plate 10 with the bottom plate 20, and lower mould mechanism 40 is located the downside of upper mould mechanism 50;The upper mould mechanism 50 includes upper mould 51 and several cooling pipes 53 arranged in the upper mould 51, the bottom of the upper mould 51 is provided with forming groove 512, the forming groove 512 is used to accommodate plastic melt, the cooling pipe 53 is used to cool plastic melt, and plastic melt is formed into the plastic product required;In the embodiment of the application, the cooling pipe 53 is rotatably installed in the inside of the upper mould 51, the inside of cooling pipe 53 is installed with baffle 531, the inside space of cooling pipe 53 is divided into first cooling cavity and second cooling cavity by baffle 531;The inside of the upper mould 51 is provided with cooling pipe 59 on one side of cooling pipe 53, the cooling pipe 59 with the cooling pipe 53 one-to-one correspondence, to Figure 6 For example, first cooling cavity is arranged towards forming groove 512, when cooling liquid is injected into the inside of cooling pipe 53, cooling liquid fills first cooling cavity and second cooling cavity, and the cooling liquid in the inside of first cooling cavity is used to cool plastic melt in forming groove 512, in the cooling process, the temperature of the cooling liquid in the inside of first cooling cavity rises, by rotating cooling pipe 53, the position of first cooling cavity and second cooling cavity is exchanged, and the cooling liquid in the inside of second cooling cavity is used to cool plastic melt in forming groove 512, in this process, cooling pipe 59 is used to cool the cooling liquid in the inside of first cooling cavity, after cooling, rotate cooling pipe 53 again, and the cooling liquid in the inside of first cooling cavity after cooling is used to cool plastic melt in forming groove 512, so on and so forth, the temperature of cooling liquid is reduced, and the rotating cooling pipe arranged simultaneously realizes that the cooling temperature of each position in mould is relatively uniform, ensures the hardening uniformity of injection molding part, improves the cooling effect of plastic melt in forming groove 512, and further improves the molding efficiency of plastic melt.
[0023] Further, in the embodiment of the application, one end of the cooling pipe 53 is provided with a gear 54, and the outside of the upper mould 51 is slidably provided with a rack 55, the rack 55 is engaged with the gear 54;The outside of the upper mould 51 is also provided with a protective cover 52, the protective cover 52 is fixedly provided with a telescopic rod 56, and the telescopic end of the telescopic rod 56 is fixedly connected with the rack 55, the telescopic rod 56 is used to drive the rack 55 to slide, so that the rack 55 drives the gear 54 to rotate, and then controls the rotation of the cooling pipe 53.
[0024] It should be noted that in the embodiment of the present application, the first feeding port 11 is formed on the top plate 10, the upper die 51 is fixedly installed at the bottom of the top plate 10, the second feeding port 511 is formed on the upper die 51, one end of the second feeding port 511 is communicated with the first feeding port 11, and the other end of the second feeding port 511 is communicated with the forming groove 512, and the first feeding port 11 and the second feeding port 511 are used to introduce the plastic melt into the forming groove 512.
[0025] Further, the air inlet is formed on the air inlet seat 12, the air outlet is formed on the air outlet seat 13, the air inlet is communicated with the air inlet 57, and the air outlet is communicated with the air outlet 58.
[0026] In the embodiment of the present application, the lower die mechanism 40 includes a first lifting seat 41, a second lifting seat 42 and a lower die 43, the air cylinder 30 is fixedly installed on the bottom plate 20, the second top rod 46 is connected to the telescopic end of the air cylinder 30, and the second top rod 46 is connected with the first lifting seat 41; at least one guide column 45 is arranged between the first lifting seat 41 and the upper die 51, one end of the guide column 45 is fixedly connected with the upper die 51, the other end of the guide column 45 is slidingly connected with the first lifting seat 41, and the lower die 43 is slidingly connected with the guide column 45; the second lifting seat 42 is arranged between the first lifting seat 41 and the lower die 43, the thimble is fixedly installed at the side of the second lifting seat 42, the upper end of the thimble penetrates through the side of the lower die 43 and extends out, and the connecting spring 47 is sleeved on the rod segment of the thimble between the second lifting seat 42 and the lower die 43; the first top rod 44 is further fixedly installed at the bottom of the second lifting seat 42, the lower end of the first top rod 44 penetrates through the first lifting seat 41 and extends downward, and the first top rod 44 is slidingly connected with the first lifting seat 41.
[0027] Figures 1-3As a schematic view of initial state of the lower die mechanism 40 and the upper die mechanism 50, when the mold is closed, the cylinder 30 drives the first lifting seat 41 to move towards the upper die 51 through the second ejector rod 46, the first lifting seat 41 drives the second lifting seat 42 and the lower die 43 to move, so that the lower die 43 is clamped into the forming groove 512 of the upper die 51, after the mold is closed, the plastic melt enters the inside of the forming groove 512, and the plastic product is formed after the plastic melt is cooled; after the plastic product is formed, the cylinder 30 drives the first lifting seat 41 to move away from the upper die 51 through the second ejector rod 46, the second lifting seat 42 and the lower die 43 move away from the upper die 51 under the action of gravity, when the first ejector rod 44 at the bottom of the second lifting seat 42 contacts the bottom plate 20, the second lifting seat 42 stops moving, the first lifting seat 41 continues to move away from the upper die 51, the distance between the second lifting seat 42 and the lower die 43 is reduced, the connecting spring 47 is in a compressed state, the ejector pin ejects the plastic product formed on the lower die 43, and the plastic product is discharged.
[0028] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, and the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to encompass all changes falling within the meaning and range of equivalents of the elements of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.
[0029] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.
Claims
1. A plastic product injection mold with a composite heat dissipation mechanism, characterized in that, The system includes a top plate (10), a bottom plate (20), a lower mold mechanism (40), and an upper mold mechanism (50). The top plate (10) and the bottom plate (20) are connected by a support column (14). The upper mold mechanism (50) includes an upper mold (51) and several cooling pipes (53) disposed inside the upper mold (51). A forming groove (512) is provided at the bottom of the upper mold (51). The cooling pipes (53) are rotatably installed inside the upper mold (51). A partition (531) is installed inside the cooling pipes (53), which divides the internal space of the cooling pipes (53) into a first cooling chamber and a second cooling chamber. A cooling pipe (59) is disposed inside the upper mold (51) on one side of the cooling pipes (53), and the cooling pipes (59) correspond one-to-one with the cooling pipes (53).
2. The plastic product injection mold with a composite heat dissipation mechanism according to claim 1, characterized in that, A gear (54) is installed at one end of the cooling pipe (53), and a rack (55) is slidably installed on the outer side of the upper mold (51), the rack (55) meshing with the gear (54); a protective cover (52) is also installed on the outer side of the upper mold (51), and a telescopic rod (56) is fixedly installed on the protective cover (52), the telescopic end of the telescopic rod (56) being fixedly connected to the rack (55).
3. The plastic product injection mold with a composite heat dissipation mechanism according to claim 2, characterized in that, The top plate (10) is provided with a first feed port (11), the upper mold (51) is fixedly installed at the bottom of the top plate (10), the upper mold (51) is provided with a second feed port (511), one end of the second feed port (511) is connected to the first feed port (11), and the other end of the second feed port (511) is connected to the forming groove (512).
4. The plastic product injection mold with a composite heat dissipation mechanism according to claim 3, characterized in that, An air inlet seat (12) and an air outlet seat (13) are installed on the top plate (10). The air inlet seat (12) has an air inlet, and the air outlet seat (13) has an air outlet. The upper mold (51) has an air inlet (57) and an air outlet (58). The air inlet is connected to the air inlet (57), and the air outlet is connected to the air outlet (58).
5. The plastic product injection mold with a composite heat sink mechanism according to claim 1, wherein, The lower mold mechanism (40) includes a first lifting seat (41), a second lifting seat (42) and a lower mold (43). A cylinder (30) is fixedly installed on the base plate (20). The telescopic end of the cylinder (30) is connected to a second push rod (46), and the second push rod (46) is connected to the first lifting seat (41).
6. The plastic product injection mold with a composite heat dissipation mechanism according to claim 5, characterized in that, At least one guide post (45) is provided between the first lifting seat (41) and the upper mold (51). One end of the guide post (45) is fixedly connected to the upper mold (51), and the other end of the guide post (45) is slidably connected to the first lifting seat (41). The lower mold (43) is slidably connected to the guide post (45).
7. The plastic product injection mold with a composite heat dissipation mechanism according to claim 6, characterized in that, The second lifting seat (42) is arranged between the first lifting seat (41) and the lower die (43), a side of the second lifting seat (42) is fixedly provided with a thimble, the upper end of the thimble penetrates the side of the lower die (43) and extends out, and the thimble is sleeved with a connecting spring (47) on the rod segment between the second lifting seat (42) and the lower die (43); the bottom of the second lifting seat (42) is further fixedly provided with a first top rod (44), the lower end of the first top rod (44) penetrates the first lifting seat (41) and extends downward, and the first top rod (44) is in sliding connection with the first lifting seat (41).