Uniform temperature control injection mold

Abstract

The invention relates to the technical field of injection molding, and discloses a uniform temperature control injection mold which comprises a mold closing body, a plurality of cooling circulation modules are installed on the surface of the mold closing body, a macroscopic adjusting assembly is arranged in the mold closing body, and the macroscopic adjusting assembly comprises a plurality of heat conduction pipes fixedly connected to the interior of the mold closing body. Temperature difference spiral sheets are mounted in the heat conduction pipes, when the temperature in the middle of the cavity changes, hot air rises, the temperature difference spiral sheets are evenly heated and expand, then the abutting plate is pushed to move, a valve element of the flow valve is driven to rotate through a trigger arm and a swing piece, and the flow of cooling liquid is adjusted in real time; therefore, the macroscopic adjusting assembly can be accurately matched with thermal load differences of injection molding filling, pressure maintaining and cooling stages, the problem of local overheating or insufficient cooling caused by fixed waterway flow of a traditional mold is effectively solved, and the quality stability and performance reliability of automobile parts are improved by dynamically adjusting the flow of cooling liquid.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding, in particular to a temperature-controlled injection molding mold. Background Art

[0002] Injection molds are widely used in the field of automotive parts injection molding. They use the coolant circulation in the water circuit to quickly reduce the mold temperature. After the mold temperature reaches the ideal state, the high-temperature plastic melt is accurately injected into the cavity. As the melt gradually cools in the cavity, the mold continues to exert its cooling efficiency until the injection molded part is completely cooled and formed. At this time, the injection mold can be opened to smoothly take out the molded automotive injection molded parts. The entire process greatly improves the product quality and production efficiency of automotive parts with the help of precise control of mold temperature and efficient process arrangement.

[0003] However, existing injection molds still expose many problems in practical applications: First, from the perspective of the overall injection molding stage, there are significant differences in the heat load of the mold in different stages of filling, holding pressure and cooling. The current mold water flow is fixed, and it is difficult to dynamically adjust the coolant flow according to the real-time changes in the mold surface temperature. During the injection molding process, the melt flow at the four corners of the mold (for example, the car window frame) is affected by the bending, which will cause flow obstruction. At this time, the temperature distribution is uneven. If the cooling flow cannot be matched, it will lead to insufficient cooling in some areas, local overheating of the product, deformation, internal stress concentration and other problems, which seriously affect the quality stability and performance reliability of automotive parts.

[0004] In addition, as the coolant flows in the water channel, its pressure will gradually decrease. This phenomenon is particularly obvious in long-process water channels. When the coolant runs to the rear end of the water channel, the flow rate slows down significantly. Although theoretically a lower flow rate can extend the heat exchange time between the coolant and the mold, the actual situation is that in a complex mold structure, a flow rate that is too slow will make it difficult for the coolant to effectively carry away the locally accumulated heat, causing the local temperature to be too high.

[0005] Specifically, when the coolant flow rate at the rear end is reduced, high-temperature zones are easily formed in key locations such as the mold core, causing slow cooling of the injection molded parts in this area, abnormal internal crystal structure, decreased mechanical properties, and even serious quality problems such as local burning and bubbles in the product, which greatly increases the defective rate, increases production costs, and reduces production efficiency. Moreover, local overheating will also accelerate the thermal fatigue wear of the mold, shorten the mold service life, increase mold maintenance and replacement costs, and have a negative impact on the economy and sustainability of the injection molding production of automotive parts.

[0006] To this end, the present invention provides a temperature-controlled injection mold. Summary of the invention

[0007] The object of the present invention is to provide a temperature-controlled injection mold to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a uniform temperature control injection mold, comprising a mold body, a plurality of cooling circulation modules are installed on the surface of the mold body, a macro-adjustment component is arranged inside the mold body, the macro-adjustment component comprises a plurality of heat-conducting tubes fixedly connected to the inside of the mold body, temperature difference spiral blades are installed inside the heat-conducting tubes, the temperature difference spiral blades are composed of two metals with different thermal expansion coefficients, a resistance plate is slidably connected to the side of the heat-conducting tube close to the outside, a trigger arm is rotatably connected to the side of the heat-conducting tube away from the mold body, and the trigger arm is slidably connected to the surface of the resistance plate, a swinging piece is installed at one end of the trigger arm away from the mold body, and the trigger arm is used to amplify the displacement of the resistance plate, a flow valve is connected to the outside of the cooling circulation module, and the end of the swinging piece away from the heat-conducting tube is mounted on the valve core of the flow valve, and the swinging piece provides a function of converting the swinging force into the rotational force.

[0009] Preferably, the heat pipe is in a shape that is continuously inclined upward, and the end of the heat pipe close to the mold body is set to a gradually contracting shape, and the end of the heat pipe away from the mold body is set to a gradually expanding shape. The trigger arm is L-shaped, and its shorter side is slidably connected to the surface of the contact plate, and the longer section is installed with the swinging piece. The contracted end of the heat pipe is located in the middle of the mold cavity of the mold body.

[0010] Preferably, a plurality of placement grooves are provided on the surface of one end of the heat conducting pipe close to the mold clamping body, and a pressure sleeve is fixedly connected inside each of the placement grooves.

[0011] Preferably, a spiral groove which continuously contracts toward the outside is opened in the middle of the heat conducting pipe, and the temperature difference spiral sheet is fixedly connected to the surface of the spiral groove.

[0012] Preferably, a plurality of telescopic rods 1 are fixedly connected inside the heat conducting tube, and output ends of the telescopic rods 1 are fixedly connected to the surface of the abutment plate.

[0013] Preferably, the swing member includes a swing frame, a slider, a sliding column and an eccentric plate, the swing frame is fixedly connected to the outer surface of the trigger arm, the slider is slidably connected to the bottom of the swing frame, the sliding column is fixedly connected to the bottom of the slider, the eccentric plate is fixedly connected to the valve core of the flow valve, and the eccentric plate is slidably connected to the outer surface of the sliding column.

[0014] Preferably, the inner side of the temperature difference spiral blade is made of brass metal, and the outer side is made of stainless steel.

[0015] Preferably, the mold body is divided into an upper mold and a lower mold, and water channels are symmetrically opened inside both of them. The cooling circulation module is connected to the water channels through a water pipe, and the flow valve is located between the input end of the cooling circulation module and the water pipe.

[0016] Preferably, a micro-adjustment component is provided inside the water channel, and the macro-adjustment component includes a plurality of telescopic rods 2, each of which is fixedly connected to the bottom of a side of the water channel away from the input end, and a partition is fixedly connected to the top of the telescopic rod 2, and the bottom of the partition is arc-shaped and matches the flow direction of the water flow, and the partition is slidably connected to the inside of the water channel.

[0017] Preferably, a spring is fixedly connected between the fixed end and the telescopic end of the telescopic rod 2, and the spring is made of a shape memory alloy, specifically a nickel-titanium shape memory alloy.

[0018] Preferably, the cooling circulation module at least includes a water pump and a water tank, and four cooling circulation modules are provided, that is, two are symmetrically provided on the surfaces of the upper mold and the lower mold, and the water pump is fixedly connected to the outer surfaces of the upper mold and the lower mold.

[0019] Preferably, the water channel is divided into a horizontal flow channel and a vertical flow channel.

[0020] Compared with the prior art, the beneficial effects of the present invention are: 1. When the temperature in the middle of the cavity changes, the hot air rises, causing the temperature difference spiral blade to be heated evenly and expand, thereby pushing the contact plate to move, and driving the flow valve core to rotate through the trigger arm and the swing part to achieve real-time adjustment of the coolant flow. Therefore, the macro-adjustment component can accurately match the heat load differences in the injection filling, holding pressure, and cooling stages, effectively avoiding the problem of local overheating or insufficient cooling caused by fixed water flow in traditional molds, and improving the quality stability and performance reliability of automotive parts by dynamically adjusting the coolant flow.

[0021] 2. During the flow of the coolant, when it flows to different points, due to the temperature difference, the spring expands to different degrees due to heat, pushing the baffle up and down, changing the local cross-sectional area of ​​the water channel. At the third and fourth points, through the adjustment of the baffle, the coolant is accelerated on the side of the vertical channel away from the injection molded part, thereby improving the heat dissipation efficiency; on the side close to the injection molded part, the increased space slows down the flow rate, which is conducive to fully absorbing heat. This dynamic adjustment makes the temperature distribution of various parts of the mold more uniform, avoids local overheating, and reduces the risk of stress concentration and deformation inside the injection molded part.

[0022] 3. A pressure sleeve is provided at one end of the heat conducting tube close to the mold body, and its contracted end reduces the contact area between the heat conducting tube and the mold body. According to the pressure formula, when the pressure is constant, the smaller the contact area, the greater the pressure. At the same time, the pressure sleeve fits tightly, playing a good role in resistance and sealing, ensuring the stability of the pressure holding stage and avoiding pressure release due to pressure changes. This helps to fully fill the melt in the mold, reduce defects such as shrinkage marks and voids in the injection molded parts, improve the quality and dimensional accuracy of the injection molded parts, and reduce the defective rate.

[0023] 4. Compared with traditional injection molds, the macro-adjustment component avoids the use of complex electronic control systems to adjust the coolant flow, which not only reduces the procurement cost of electronic components, but also reduces the maintenance cost caused by electronic equipment failure. Moreover, due to the high reliability of the structure, it can effectively reduce the number of production interruptions caused by mold failure, reduce the potential economic losses caused by production stagnation, and greatly reduce the comprehensive cost of the mold in the long term.

[0024] 5. The water channel structure of traditional injection molds is relatively complex, and it is difficult to install complex parts in them. Professional technicians need to spend a lot of time and energy to operate, and problems such as improper installation and damage to parts are prone to occur during the installation process. However, the design of telescopic rod 2 and partition greatly simplifies the installation process. Telescopic rod 2 is directly fixed to the bottom of the side of the water channel away from the input end. The installation method is simple and clear. The partition is connected to the top of telescopic rod 2. Therefore, this design makes the installation of the partition inside the water channel smoother, without the need for complicated positioning and calibration operations. Even non-professionals can quickly complete the installation work after simple training, which significantly improves the installation efficiency and reduces the difficulty of installation, providing convenience for the maintenance and upgrade of injection molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front perspective schematic diagram of the main structure of the present invention.

[0026] Figure 2 It is a schematic cross-sectional perspective view of the upper mold of the present invention.

[0027] Figure 3 It is a three-dimensional schematic diagram of the heat conduction pipe of the present invention.

[0028] Figure 4 It is a cross-sectional perspective schematic diagram of the heat conduction pipe of the present invention.

[0029] Figure 5 It is a three-dimensional schematic diagram of the upper mold of the present invention from another angle.

[0030] Figure 6 For the present invention Figure 5 Enlarged three-dimensional schematic diagram of the structure at point A in the middle.

[0031] Figure 7 It is a cross-sectional perspective schematic diagram of the flow valve of the present invention.

[0032] Figure 8 It is a schematic cross-sectional perspective view of the micro-adjustment component of the present invention.

[0033] Fig. 9 For the present invention Figure 8 Enlarged three-dimensional schematic diagram of the structure at point B in the middle.

[0034] Fig.10 Schematic diagram of the coolant flow path of the present invention.

[0035] In the figure: 11, mold body; 12, cooling circulation module; 13, water channel.

[0036] 2. Macro-adjustment assembly; 21. Heat pipe; 22. Pressurization sleeve; 23. Spiral groove; 24. Temperature difference spiral sheet; 25. Resistance plate; 26. Trigger arm; 27. Telescopic rod 1; 28. Swinging piece; 29. ​​Flow valve.

[0037] 3. Micro-adjustment component; 31. Telescopic rod 2; 32. Partition. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that the cooling circulation module 12 only provides the function of cooling circulation, and the flow valve 29 only provides the function of changing the opening and closing angle by rotating the valve core. The working principle and specific structure of the above structure are both existing technologies. Therefore, in view of the versatility of the above structure, its specific principle will not be repeated later.

[0040] Example 1, please refer to Figures 1 to 7As shown, a uniform temperature control injection mold includes a mold body 11, a plurality of cooling circulation modules 12 are installed on the surface of the mold body 11, a macro-adjustment component 2 is arranged inside the mold body 11, the macro-adjustment component 2 includes a plurality of heat pipes 21 fixedly connected to the inside of the mold body 11, temperature difference spiral blades 24 are installed inside the heat pipes 21, and the temperature difference spiral blades 24 are composed of two metals with different thermal expansion coefficients, a resistance plate 25 is slidably connected to the side of the heat pipe 21 close to the outside, a trigger arm 26 is rotatably connected to the side of the heat pipe 21 away from the mold body 11, and the trigger arm 26 is slidably connected to the surface of the resistance plate 25, a swinging member 28 is installed at one end of the trigger arm 26 away from the mold body 11, and the trigger arm 26 is slidably connected to the surface of the resistance plate 25, and a swinging member 28 is installed at one end of the trigger arm 26 away from the mold body 11, and the trigger arm 26 is used to amplify the displacement of the resistance plate 25, and a flow valve 29 is connected to the outside of the cooling circulation module 12, and the end of the swinging member 28 away from the heat pipe 21 is installed with the valve core of the flow valve 29, and the swinging member 28 provides a function of converting the swinging force into the rotational force.

[0041] It should be noted that the heat pipe 21 is in a shape that is continuously tilted upward, and the end of the heat pipe 21 close to the mold body 11 is set to a gradually contracting shape, and the end of the heat pipe 21 away from the mold body 11 is set to a gradually expanding shape. The trigger arm 26 is L-shaped, and its shorter side is slidably connected to the surface of the abutment plate 25, and the longer section is installed with the swinging member 28. The contracted end of the heat pipe 21 is located in the middle of the cavity of the mold body 11, and a plurality of placement grooves are provided on the surface of the end of the heat pipe 21 close to the mold body 11, and a pressurizing sleeve 22 is fixedly connected to the inside of the placement grooves. A spiral groove 23 that continuously contracts toward the outside is provided in the middle of the heat pipe 21, and a temperature difference spiral sheet 24 is fixedly connected to the surface of the spiral groove 23. A plurality of telescopic rods 27 are fixedly connected inside the mold, and the output ends of the telescopic rods 27 are fixedly connected to the surface of the contact plate 25. The swing member 28 includes a swing frame, a slider, a slide column and an eccentric plate. The swing frame is fixedly connected to the outer surface of the trigger arm 26, the slider is slidably connected to the bottom of the swing frame, the slide column is fixedly connected to the bottom of the slider, the eccentric plate is fixedly connected to the valve core of the flow valve 29, and the eccentric plate is slidably connected to the outer surface of the slide column. The inner side of the temperature difference spiral blade 24 is brass metal and the outer side is stainless steel. The mold body 11 is divided into an upper mold and a lower mold, and water channels 13 are symmetrically opened inside the two molds. The cooling circulation module 12 is connected to the water channel 13 through a water pipe, and the flow valve 29 is located between the input end of the cooling circulation module 12 and the water pipe.

[0042] Specifically, after the upper mold and the lower mold are buckled together, the cooling circulation module 12 is started. At this time, the cooling circulation module 12 starts to work and transports the coolant to the water channel 13 inside the mold body 11. Then, the high-temperature melt is injected into the cavity of the mold body 11. The melt continuously flows in the cavity to gradually form the desired injection molded part.

[0043] In this process, since the contraction end of the heat pipe 21 is located in the middle of the cavity of the mold body 11, and the temperature in the middle of the cavity can better reflect the overall average temperature, the air inside the heat pipe 21 will be continuously heated, and the heat pipe 21 as a whole will gradually tilt upward. Based on the principle of hot air rising, the hot air will rise along the wall of the heat pipe 21. When the hot air passes through the spiral groove 23, the guiding and contraction effect of the spiral groove 23 makes the hot air have a certain spiral motion tendency, and the hot air with a spiral motion tendency is adapted to the shape of the temperature difference spiral plate 24, so that the temperature difference spiral plate 24 can receive heat evenly.

[0044] When the hot air rises and passes through the temperature differential spiral piece 24, since the temperature differential spiral piece 24 is composed of two metals with different thermal expansion coefficients (brass on the inside and stainless steel on the outside), the thermal expansion coefficient of brass is larger than that of stainless steel. When the temperature differential spiral piece 24 is heated by the hot air, the brass on the inside expands more than the stainless steel on the outside. This difference causes the overall spiral shape of the temperature differential spiral piece 24 to continue to expand. As the temperature differential spiral piece 24 continues to expand, it will contact the contact plate 25 and push the contact plate 25 to move. The movement of the contact plate 25 will cause the trigger arm 26 to rotate around its rotation connection point with the heat pipe 21.

[0045] At this time, based on the lever effect, the slight displacement of the shorter side of the trigger arm 26 (the side in contact with the contact plate 25) is magnified by the longer side of the trigger arm 26, and the long side of the trigger arm 26 swings upward. The swing of the trigger arm 26 will drive the swing frame fixed to it to move synchronously. When the swing frame moves, the slider passively slides on the surface of the swing frame. At the same time, the slide column is also driven by the slider to produce a trend of conforming to the upward movement of the swing frame. The slide column slides in the eccentric plate and pulls the eccentric plate to rotate. Subsequently, the rotation of the eccentric plate drives the valve core of the flow valve 29 to rotate. The rotation of the valve core increases the flow of coolant through the flow valve 29, thereby realizing dynamic adjustment of the internal temperature of the clamping body 11.

[0046] During the melt cooling process, timely increasing the coolant flow rate according to the temperature changes inside the mold can more efficiently remove heat, ensure uniform mold temperature, and avoid defects in injection molded parts due to local overheating or uneven cooling.

[0047] It should be noted that, since a pressure sleeve 22 is provided on the surface of the heat pipe 21, the mold body 11 needs to be pressure-maintained during the injection molding stage. The contracted end of the heat pipe 21 makes the contact area between it and the mold body 11 smaller. According to the pressure formula P=SF, when the pressure is constant, the smaller the contact area, the greater the pressure. At the same time, the pressure sleeve 22 fits tightly between the heat pipe 21 and the mold body 11, playing a good resistance and sealing role, so that the pressure will not be released due to pressure changes during the pressure holding process. The stable pressure holding process helps to fully fill the melt in the mold, reduce the occurrence of defects such as shrinkage marks and voids in the injection molded parts, and improve the quality and dimensional accuracy of the injection molded parts.

[0048] Based on the above, the macro-adjustment component 2 can drive the trigger arm 26 to work in conjunction based on temperature changes through the temperature difference spiral blade 24, and adjust the opening of the flow valve 29 after amplifying the small displacement, so as to realize real-time adjustment of the coolant flow, accurately match the heat load difference of each stage of injection molding (filling, holding pressure, cooling), and effectively avoid local overheating or insufficient cooling caused by fixed flow. Secondly, the layout of the heat pipe 21 takes the middle of the cavity as the core monitoring point, and combines the spiral groove 23 to guide the hot air flow to evenly contact the temperature difference spiral blade 24, ensuring the sensitivity and stability of the global temperature feedback. Finally, since the macro-adjustment component 2 adopts a purely mechanical structure, no external sensor or power control is required, which reduces the cost and failure risk. At the same time, the design of the pressurization sleeve 22 ensures the sealing performance in the holding pressure stage and reduces the filling defects caused by pressure relief. Therefore, the macro-adjustment component 2 has the characteristics of high efficiency, reliability and low cost, which can significantly improve the dimensional accuracy of injection molded parts and reduce the defective rate.

[0049] Example 2, please refer to Figures 8 to 10 As shown, a micro-adjustment component 3 is provided inside the waterway 13, and the macro-adjustment component 2 includes a plurality of telescopic rods 31, and the telescopic rods 31 are fixedly connected to the bottom of the side of the waterway 13 away from the input end, and a partition 32 is fixedly connected to the top of the telescopic rod 31, and the bottom of the partition 32 is arc-shaped and matches the flow direction of the water flow, and the partition 32 is slidably connected to the inside of the waterway 13.

[0050] It should be noted that a spring is fixedly connected between the fixed end and the telescopic end of the telescopic rod 31. The spring is made of a memory alloy, specifically a nickel-titanium shape memory alloy. The cooling circulation module 12 includes at least a water pump and a water tank, and the water tank stores coolant. There are four cooling circulation modules 12, that is, two are symmetrically arranged on the surface of the upper mold and the lower mold, and the water pump is fixedly connected to the outer surfaces of the upper mold and the lower mold. The water channel 13 is divided into a horizontal flow channel and a vertical flow channel. The partitions 32 are all located in the vertical flow channel, and the partitions 32 block the horizontal flow channel, so that the coolant can only continue to move through the bottom space of the partition 32.

[0051] Specifically, based on the first embodiment, the macro-regulation component 2 can dynamically control the flow rate of the coolant, but there are some problems in the flow of the coolant. Since the path of the water channel 13 is relatively long, according to the principles of fluid mechanics, the coolant will produce friction with the pipe wall when flowing, and the energy will be gradually lost, resulting in lower pressure and slower flow rate as it moves backward. When the coolant passes through the four points of the injection molded part, for the last two points, although the slower flow rate can prolong the contact time between the coolant and the points, it will also cause the problem of difficulty in removing heat.

[0052] Please refer to Fig. 9As shown, the water channel 13 is divided into a transverse flow channel and a vertical flow channel. The partition 32 is located in the vertical flow channel and blocks the transverse flow channel, so that the coolant can only continue to move through the bottom space of the partition 32.

[0053] Please refer to Fig.10 As shown, with the flow of the coolant, when the coolant flows to the third point, the coolant in the horizontal flow channel is blocked by the partition 32 and can only move along the partition 32 and the inner wall of the vertical flow channel. Due to the existence of the partition 32, this part of the space becomes smaller than the original water channel 13 (when there is no partition 32). According to the fluid continuity equation, when the flow rate remains unchanged, the cross-sectional area of ​​the flow channel decreases and the flow rate increases. At this time, the part with increased flow rate is located on the side of the vertical flow channel away from the injection molded part, which can speed up the flow rate of the coolant, improve the heat dissipation efficiency of the coolant, and take away the heat of the mold in time.

[0054] As the coolant flows, it moves to the bottom of the partition 32. At this time, the space increases. This part of the space is also the space closest to the injection molded part in the vertical channel. The increase in space slows down the flow rate, which is conducive to the coolant to more fully absorb the heat of the injection molded part, improve the heat exchange efficiency, and avoid local overheating of the injection molded part. Then the coolant moves to the other side of the partition 32 and flows upward.

[0055] Since the temperature difference between the third point and the fourth point is larger than that between the first and second points (because the coolant has absorbed heat and has a higher temperature when it reaches these two points), and the telescopic rod 31 is located at the bottom of the vertical flow channel, this part of the space is closest to the injection molded part. Therefore, the telescopic rod 31 expands due to the heat, and then the telescopic end of the telescopic rod 31 moves and pushes the partition 32 to move upward. At this time, the length of the acceleration space formed by the side wall of the partition 32 and the pipe wall of the water channel 13 is reduced, while the space closest to the bottom and the injection molded part is increased.

[0056] The shortening of the acceleration space leads to the increase of the space below. Although the path of fluid acceleration becomes shorter, the increase of the space below brings many positive effects. From a microscopic perspective, the increase of the space below changes the flow state of the coolant. In fluid mechanics, when the cross-sectional area of ​​the flow channel increases, the flow rate of the coolant will slow down accordingly. According to Bernoulli's principle, the slowing of the flow rate will increase the pressure of the fluid, which means that the coolant can contact the injection molded part with a higher pressure in the area closest to the injection molded part, thereby enhancing the driving force of heat exchange.

[0057] At the same time, the larger space provides more space for the coolant to exchange heat, so that the coolant can contact the surface of the injection molded part more fully, which increases the collision frequency of the coolant molecules at the microscopic level and improves the heat conduction efficiency. This is crucial for accurately controlling the local temperature of the injection molded part and can effectively reduce problems such as internal stress concentration and deformation caused by local overheating or uneven cooling.

[0058] It should be noted that during the injection molding process, the heat loads in different areas vary greatly. Dynamic adjustment through the coordinated action of the telescopic rod 31 and the partition 32 can accurately match the cooling needs of each area. For the third and fourth points with higher temperatures, the coolant with the increased space below can absorb heat more efficiently, ensuring that these areas cool down quickly and reducing the temperature difference with other points. The temperature distribution inside the mold is optimized as a whole, making the temperature change of the injection molded parts more uniform during the cooling process, greatly improving the quality of the injection molded parts, reducing the defective rate, and improving the reliability and stability of production.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature-controlled injection mold, comprising a mold body (11), a surface of the mold body (11) being provided with a plurality of cooling circulation modules (12), characterized in that: A macro-adjustment component (2) is arranged inside the mold body (11), and the macro-adjustment component (2) comprises a plurality of heat-conducting pipes (21) fixedly connected to the inside of the mold body (11), and temperature difference spiral blades (24) are installed inside the heat-conducting pipes (21), and the temperature difference spiral blades (24) are composed of two metals with different thermal expansion coefficients, and the side of the heat-conducting pipes (21) close to the outside is slidably connected to a resistance plate (25), and the side of the heat-conducting pipes (21) away from the mold body (11) is rotatably connected to a contact plate (25). A trigger arm (26) is provided, and the trigger arm (26) is slidably connected to the surface of the resistance plate (25); an end of the trigger arm (26) away from the mold clamping body (11) is provided with a swing member (28); the trigger arm (26) is used to amplify the displacement of the resistance plate (25); the outside of the cooling circulation module (12) is connected to a flow valve (29); an end of the swing member (28) away from the heat conducting pipe (21) is mutually installed with a valve core of the flow valve (29); the swing member (28) provides a function of converting a swing force into a rotational force.

2. The temperature-controlled injection mold according to claim 1, characterized in that: The heat conducting tube (21) is in a shape that gradually tilts upwards; one end of the heat conducting tube (21) close to the mold body (11) is arranged in a gradually contracting shape; one end of the heat conducting tube (21) away from the mold body (11) is arranged in a gradually expanding shape; the trigger arm (26) is in an L shape, and its shorter side is slidably connected to the surface of the abutment plate (25), and the longer section is mounted on the swinging member (28); the contracted end of the heat conducting tube (21) is located in the middle of the mold cavity of the mold body (11).

3. The temperature-controlled injection mold according to claim 2, characterized in that: A plurality of placement grooves are provided on the surface of one end of the heat conducting pipe (21) close to the mold clamping body (11), and a pressure sleeve (22) is fixedly connected to the inside of each of the placement grooves.

4. The temperature-controlled injection mold according to claim 1, characterized in that: A spiral groove (23) which continuously contracts toward the outside is provided in the middle of the heat conducting pipe (21), and the temperature difference spiral sheet (24) is fixedly connected to the surface of the spiral groove (23).

5. The temperature-controlled injection mold according to claim 1, characterized in that: A plurality of telescopic rods (27) are fixedly connected inside the heat conducting tube (21), and the output ends of the telescopic rods (27) are fixedly connected to the surface of the abutment plate (25).

6. The temperature-controlled injection mold according to claim 1, characterized in that: The swing member (28) comprises a swing frame, a slider, a slide column and an eccentric plate, the swing frame being fixedly connected to the outer surface of the trigger arm (26), the slider being slidably connected to the bottom of the swing frame, the slide column being fixedly connected to the bottom of the slider, the eccentric plate being fixedly connected to the valve core of the flow valve (29), and the eccentric plate being slidably connected to the outer surface of the slide column.

7. The temperature-controlled injection mold according to claim 1, characterized in that: The inner side of the temperature difference spiral blade (24) is made of brass, and the outer side is made of stainless steel.

8. The temperature-controlled injection mold according to claim 1, characterized in that: The mold body (11) is divided into an upper mold and a lower mold, and water channels (13) are symmetrically provided inside both molds. The cooling circulation module (12) is connected to the water channel (13) via a water pipe, and the flow valve (29) is located between the input end of the cooling circulation module (12) and the water pipe.

9. The temperature-controlled injection mold according to claim 8, characterized in that: A micro-adjustment component (3) is arranged inside the water channel (13); the macro-adjustment component (2) comprises a plurality of telescopic rods (31); the telescopic rods (31) are fixedly connected to the bottom of a side of the water channel (13) away from the input end; a partition (32) is fixedly connected to the top of the telescopic rods (31); the bottom of the partition (32) is arc-shaped and matches the flow direction of the water flow; the partition (32) is slidably connected to the inside of the water channel (13).

10. The temperature-controlled injection mold according to claim 9, characterized in that: A spring is fixedly connected between the fixed end and the telescopic end of the second telescopic rod (31), and the spring is made of a memory alloy.

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