Injection mold frame for automobile rearview mirror bracket

Abstract

The invention discloses an automobile rearview mirror support injection mold frame, and belongs to the technical field of injection molds, the automobile rearview mirror support injection mold frame comprises a workbench, a plurality of guide parts are supported on the workbench, a lower mold and an upper mold are arranged on the guide parts in a sleeving manner, a heat dissipation frame assembly and a liquid storage tank are arranged below the workbench, and a lower mold liquid outlet pipe and an upper mold liquid outlet pipe are both communicated with the heat dissipation frame assembly; the heat dissipation frame assembly communicates with the liquid storage box, a water pump used for pumping liquid in the liquid storage box into the lower mold and the upper mold is arranged in the liquid storage box, and the heat dissipation frame assembly is used for conducting heat dissipation and cooling on the liquid flowing out of the lower mold cooling cavity and the upper mold cooling cavity and then conveying the liquid to the liquid storage box. The guide part plays a guiding role in mold closing of the upper mold and the lower mold, the mold closing precision is improved, meanwhile, the upper mold cooling cavity and the lower mold cooling cavity are matched with the cooling liquid for cooling, the cooling liquid can be recycled after being subjected to timely heat dissipation through the heat dissipation frame assembly, the heat dissipation effect is guaranteed, and the service life of the mold is prolonged. And the influence on the processing quality is reduced.

Description

Technical Field

[0001] This application relates to the technical field of injection molds, and in particular, to an injection mold base for an automotive rearview mirror bracket. Background Art

[0002] The information provided in this part is for the purpose of generally presenting the background of this application. To the extent described in this part, the work of the currently named inventors and aspects that may not constitute prior art descriptions at the time of filing are neither expressly nor implicitly considered prior art to this application.

[0003] In the field of industrial manufacturing, products produced in batches usually use molds for production, and the mold base is an integral part of the mold. As the support of the mold, the mold base can be said to be the skeleton of the entire mold. An injection mold base is used to support and install an injection mold. When processing products, the raw materials melted by heat are usually injected into the mold cavity by a high-pressure injection molding machine, and after cooling and solidifying, the formed products are obtained.

[0004] As a key component related to automotive driving, the bracket of the rearview mirror is usually a plastic product. Currently, there has been an injection mold base for an automotive rearview mirror bracket formed by injection molding, such as an injection mold base for an automotive rearview mirror bracket disclosed in a Chinese patent with the patent publication number CN210100526U, where each plate structure is simple, reasonably designed, and easy to process.

[0005] However, for existing injection mold bases, it is difficult to further improve the accuracy of the upper and lower mold clamping. During use, after injection molding, it is simply cooled by water cooling. However, since the water temperature is likely to rise, the efficiency of water cooling is not high, affecting the stability of the processing quality and the processing efficiency.

[0006] It should be noted that the information disclosed in the above background art part is only used to enhance the understanding of the background of this application. Therefore, it may include information that does not constitute prior art known to those of ordinary skill in the art. Summary of the Invention In view of at least one of the above technical problems, this application provides an injection mold base for an automotive rearview mirror bracket, which can play a guiding role in the mold clamping of the upper and lower molds through a guide member to improve the accuracy of mold clamping. At the same time, the upper mold cooling cavity and the lower mold cooling cavity cooperate with a cooling liquid for cooling, and the cooling liquid can be recycled in time after being dissipated by a heat dissipation frame assembly to ensure the heat dissipation effect and reduce the impact on the processing quality.

[0007] According to one aspect of the present application, there is provided an injection mold base for an automotive rearview mirror bracket, including a workbench, a lower mold, and an upper mold. The workbench is used to support and limit the lower mold. A plurality of guiding members are provided on the workbench. Both the lower mold and the upper mold are sleeved on the guiding members. A lower mold cooling cavity is formed in the lower mold, and a lower mold liquid outlet pipe is provided on the side wall of the lower mold cooling cavity. An upper mold cooling cavity is formed in the upper mold, and an upper mold liquid outlet pipe is provided on the side wall of the upper mold cooling cavity. A heat dissipation frame assembly and a liquid storage tank are provided below the workbench. Both the lower mold liquid outlet pipe and the upper mold liquid outlet pipe are communicated with the heat dissipation frame assembly, and the heat dissipation frame assembly is communicated with the liquid storage tank. A water pump for pumping the liquid in the liquid storage tank into the lower mold and the upper mold is provided in the liquid storage tank. The heat dissipation frame assembly is used to dissipate heat and cool the liquid flowing out of the lower mold cooling cavity and the upper mold cooling cavity and then transport it to the liquid storage tank.

[0008] In some embodiments of the present application, a cooling channel is formed in the guiding member, and the cooling channel is communicated with the lower mold cooling cavity. The water pump in the liquid storage tank is communicated with the cooling channel through a liquid outlet pipe.

[0009] In some embodiments of the present application, a connecting frame is provided at the top of adjacent guiding members. The water pump in the liquid storage tank is communicated with a preset liquid storage cavity in the connecting frame through a liquid outlet pipe. A guiding and supporting assembly is provided at the bottom of the connecting frame, and the guiding and supporting assembly is communicated with the liquid storage cavity. A limiting cavity is formed at the top of the upper mold, and the limiting cavity is communicated with the upper mold cooling cavity. The guiding and supporting assembly is used to penetrate into the limiting cavity when the upper mold rises to support the upper mold and transport the liquid in the liquid storage cavity to the limiting cavity and the upper mold cooling cavity.

[0010] In some embodiments of the present application, the guiding and supporting assembly includes a support plate, a connecting rod, a second sealing plate, a compression spring, and a guiding frame. The guiding frame is provided at the bottom of the connecting frame. A liquid outlet channel is formed on the bottom plate of the connecting frame. The top of the guiding frame is communicated with the liquid storage cavity through the liquid outlet channel. The bottom of the guiding frame is open. The connecting rod penetrates through the guiding frame and the top of the connecting rod protrudes outside the connecting frame. The second sealing plate is sleeved on the connecting rod, and the second sealing plate is used to be driven by the connecting rod to seal the liquid outlet channel. The bottom end of the connecting rod is hinged to the first end of the support plate. The middle of the support plate is connected to the bottom end of the side wall of one side of the guiding frame through a compression spring. The upper mold is used to abut against the bottom surface of the top plate of the upper mold cooling cavity to press down the second end of the support plate after the support plate penetrates into the limiting cavity, and then drive the first end of the support plate and the connecting rod to rise, so that the second sealing plate rises to open the liquid outlet channel and then abuts against the top plate of the connecting frame to limit the connecting rod.

[0011] In some embodiments of the present application, a handle is provided at the top end of the connecting rod, a rotating shaft is provided at the first end of the support plate, and a connecting bearing is provided on the rotating shaft. The bottom end of the connecting rod is connected to the connecting bearing.

[0012] In some embodiments of the present application, the injection mold base of the vehicle rearview mirror bracket further includes a return pipe. The lower die liquid outlet pipe and the upper die liquid outlet pipe are both communicated with the inlet of the return pipe. The outlet of the return pipe is communicated with the heat dissipation frame assembly. A heat dissipation plate assembly is arranged on the return pipe, and the heat dissipation plate assembly is used for dissipating heat from the liquid in the return pipe.

[0013] In some embodiments of the present application, a temporary liquid storage frame is arranged on the return pipe, and the heat dissipation plate assembly is arranged in the temporary liquid storage frame. The bottom end of the return pipe is communicated with the heat dissipation frame assembly through a connecting pipe vertically connected to the return pipe. The heat dissipation plate assembly includes a heat dissipation plate, a first sealing plate and a limiting spring. The heat dissipation plate penetrates through the side wall of the temporary liquid storage frame. The first end of the heat dissipation plate is located inside the temporary liquid storage frame, and the second end of the heat dissipation plate is located outside the temporary liquid storage frame. The first sealing plate is movably arranged in the return pipe. The first end of the limiting spring is connected to the bottom surface of the first sealing plate, and the second end of the limiting spring is connected to the bottom plate of the connecting pipe. The first sealing plate is used for receiving and blocking the liquid in the return pipe and making the liquid overflow the first end of the heat dissipation plate, and under the action of the gravity of the continuously accumulated liquid in the return pipe, pushing the first sealing plate down to the connecting pipe to open the channel between the return pipe and the connecting pipe.

[0014] In some embodiments of the present application, a contact part is arranged at the first end of the heat dissipation plate. The contact part is a scattered strip structure. A heat dissipation part is arranged at the second end of the heat dissipation plate, and a plurality of strip-shaped through holes are arranged at intervals on the heat dissipation part.

[0015] In some embodiments of the present application, the heat dissipation frame assembly includes a heat dissipation frame, a partition plate, a first heat dissipation member and a second heat dissipation member. The partition plate is arranged in the heat dissipation frame. The partition plate divides the heat dissipation frame into an upper first heat dissipation cavity and a lower second heat dissipation cavity. The first heat dissipation member is arranged in the first heat dissipation cavity, and the second heat dissipation member is arranged in the second heat dissipation cavity. Both the first heat dissipation member and the second heat dissipation member include scattered heat dissipation strips, and the outer ends of the heat dissipation strips all penetrate out of the heat dissipation frame. A first channel is opened on the partition plate, and a second channel is opened on the connecting bottom plate of the heat dissipation frame. The second channel is communicated with the liquid storage tank through a liquid inlet pipe. A linkage baffle assembly is arranged in the heat dissipation frame, and the linkage baffle assembly is used for simultaneously opening or closing the first channel and the second channel.

[0016] In some embodiments of the present application, the linkage baffle assembly includes a linkage rod, a first baffle, a second baffle, and a third baffle. The linkage rod is movably arranged in the heat dissipation frame and sequentially passes through the first channel and the second channel. The first baffle is arranged at the top end of the linkage rod and above the first channel. The third baffle is arranged at the bottom end of the linkage rod. The second baffle is sleeved on the middle part of the linkage rod and above the second channel. A cam is arranged in the liquid inlet pipe. The cam is driven to rotate by a driving motor arranged outside the liquid inlet pipe. The cam is in rolling connection with the bottom surface of the third baffle. The cam is used to drive the third baffle to cycle up and down, and then drive the linkage rod, the first baffle, and the second baffle to cycle up and down through the third baffle, so as to cyclically open or close the first channel and the second channel.

[0017] The present application has the following beneficial effects: An injection mold base for an automotive rearview mirror bracket in the present application guides the mold closing of the upper mold and the lower mold through a guiding member, effectively improving the accuracy and stability of mold closing. At the same time, an upper mold cooling cavity and a lower mold cooling cavity are respectively opened in the upper mold and the lower mold. With the cooperation of cooling liquid, the upper mold and the lower mold can be effectively cooled. After the cooling liquid takes out the heat of the upper mold and the lower mold, the liquid is timely heat-dissipated and cooled through the heat dissipation frame assembly, and then the liquid is temporarily stored through the liquid storage tank. The liquid is cyclically pumped into the upper mold cooling cavity and the lower mold cooling cavity through a water pump to ensure the effect of cyclic cooling of the cooling liquid, ensure the stability and adaptability of the temperature of the upper mold and the lower mold, ensure the processing quality, and there is no need for frequent shutdown for temperature reduction operation, which is beneficial to improving the processing efficiency.

[0018] Of course, it is not necessary for any product implementing the present application to achieve all the above-mentioned advantages simultaneously. In addition to the purposes, features, and advantages described above, the present application has other purposes, features, and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings: Figure 1 is a schematic diagram of the overall structure of a preferred embodiment of the present application; Figure 2 is a schematic diagram of the installation of the guiding and supporting assembly of a preferred embodiment of the present application; Figure 3 is a schematic diagram of the installation position of the heat dissipation frame assembly of a preferred embodiment of the present application; Figure 4 is a schematic diagram of the structure of the guiding and supporting assembly of a preferred embodiment of the present application; Figure 5 is a schematic diagram of the structure of the connecting frame of a preferred embodiment of the present application; Figure 6 It is a schematic diagram of the position of the upper die cooling cavity in the preferred embodiment of the present application; Figure 7 It is a schematic diagram of the structure of the liquid storage cavity in the preferred embodiment of the present application; Figure 8 It is a schematic diagram of the structure of the heat dissipation plate assembly in the preferred embodiment of the present application; Figure 9 It is a schematic diagram of the internal structure of the heat dissipation frame in the preferred embodiment of the present application; Figure 10 It is a schematic diagram of the structure of the circulation pipeline in the preferred embodiment of the present application; Figure 11 It is a schematic diagram of the installation of the linkage rod in the preferred embodiment of the present application; Figure 12 It is a schematic diagram of the position of the cam in the preferred embodiment of the present application; Legend: 1. Workbench; 11. Support column; 2. Lower die; 21. Lower cavity; 22. Limit block; 23. Connecting sleeve; 24. Lower die liquid outlet pipe; 25. Lower die cooling cavity; 3. Upper die; 31. Upper die liquid outlet pipe; 32. Limit cavity; 33. Upper die cooling cavity; 4. Guide part; 41. Cooling channel; 5. Return pipe; 51. Temporary liquid storage frame; 52. Connecting pipe; 6. Heat dissipation plate assembly; 61. Heat dissipation plate; 62. Contact part; 63. Heat dissipation part; 64. First sealing plate; 65. Limit spring; 7. Heat dissipation frame assembly; 71. Circulation pipeline; 72. Heat dissipation frame; 73. Partition plate; 74. First heat dissipation cavity; 75. Second heat dissipation cavity; 76. Connecting bottom plate; 77. First heat dissipation part; 78. Second heat dissipation part; 79. Linkage rod; 710. First baffle; 711. Second baffle; 712. Third baffle; 8. Liquid storage tank; 81. Liquid outlet pipe; 82. Water pump; 83. Cam; 84. Inlet pipe; 9. Connecting frame; 91. Liquid storage cavity; 92. Limit plate; 93. Liquid outlet channel; 10. Guide support assembly; 101. Support plate; 102. Link rod; 103. Handle; 104. Second sealing plate; 105. Compression spring; 106. Guide frame. Detailed implementation manners

[0020] The following will describe the embodiments of the present application in detail with reference to the accompanying drawings. However, the present application can be implemented in many different ways defined and covered by the following.

[0021] Figure 1 It is a schematic diagram of the overall structure in the preferred embodiment of the present application; Figure 2 It is a schematic diagram of the installation of the guide support assembly in the preferred embodiment of the present application; Figure 3 It is a schematic diagram of the installation position of the heat dissipation frame assembly in the preferred embodiment of the present application; Figure 4 It is a schematic diagram of the structure of the guide support assembly in the preferred embodiment of the present application;Figure 5 It is a schematic structural diagram of the connection frame of the preferred embodiment of the present application; Figure 6 It is a schematic diagram of the position of the upper die cooling cavity of the preferred embodiment of the present application; Figure 7 It is a schematic structural diagram of the liquid storage cavity of the preferred embodiment of the present application; Figure 8 It is a schematic structural diagram of the heat dissipation plate assembly of the preferred embodiment of the present application; Figure 9 It is a schematic diagram of the internal structure of the heat dissipation frame of the preferred embodiment of the present application; Figure 10 It is a schematic structural diagram of the circulation pipeline of the preferred embodiment of the present application; Figure 11 It is a schematic diagram of the installation of the linkage rod of the preferred embodiment of the present application; Figure 12 It is a schematic diagram of the position of the cam of the preferred embodiment of the present application.

[0022] An injection mold for an automotive rearview mirror bracket, comprising a workbench 1, a lower die 2 and an upper die 3. The workbench 1 is used to support and limit the lower die 2. A plurality of guiding members 4 are provided on the workbench 1. Both the lower die 2 and the upper die 3 are sleeved on the guiding members 4. A lower die cooling cavity 25 is formed in the lower die 2. A lower die liquid outlet pipe 24 is provided on the side wall of the lower die cooling cavity 25. An upper die cooling cavity 33 is formed in the upper die 3. An upper die liquid outlet pipe 31 is provided on the side wall of the upper die cooling cavity 33. A heat dissipation frame assembly 7 and a liquid storage tank 8 are provided below the workbench 1. The lower die liquid outlet pipe 24 and the upper die liquid outlet pipe 31 are both communicated with the heat dissipation frame assembly 7. The heat dissipation frame assembly 7 is communicated with the liquid storage tank 8. A water pump 82 for pumping the liquid in the liquid storage tank 8 into the lower die 2 and the upper die 3 is provided in the liquid storage tank 8. The heat dissipation frame assembly 7 is used to dissipate heat and cool the liquid flowing out of the lower die cooling cavity 25 and the upper die cooling cavity 33 and then transport it to the liquid storage tank 8.

[0023] Here, the meaning of "the lower die 2 and the upper die 3" refers to a set of molds used for injection molding of injection products. A lower cavity 21 is formed on the lower die 2, and an upper cavity is formed on the upper die 3. In some embodiments, a limiting block 22 is provided on the lower die 2, and a limiting groove cooperating with the limiting block 22 is formed at the bottom of the upper die 3. The cooperation between the limiting block 22 and the limiting groove can further improve the accuracy and stability of mold closing.

[0024] Here, the meaning of "the workbench 1" refers to the structure used to install the lower die 2 and support and limit the lower die 2. In some embodiments, the workbench 1 is supported by support columns 11, and the heat dissipation frame assembly 7 and the liquid storage tank 8 are both arranged below the workbench 1.

[0025] In this application, the die closing of the upper die 3 and the lower die 2 is guided by the guide member 4, effectively improving the accuracy and stability of die closing. At the same time, an upper die cooling cavity 33 and a lower die cooling cavity 25 are respectively opened in the upper die 3 and the lower die 2. With the cooperation of cooling liquid, the upper die 3 and the lower die 2 can be effectively cooled. After the cooling liquid takes out the heat of the upper die 3 and the lower die 2, the heat dissipation frame assembly 7 is used to timely dissipate and cool the liquid, and then the liquid is temporarily stored through the liquid storage tank 8. The liquid is circulated and pumped into the upper die cooling cavity 33 and the lower die cooling cavity 25 through the water pump 82 to ensure the effect of circulating cooling and temperature reduction of the cooling liquid, ensure the stability and adaptability of the temperatures of the upper die 3 and the lower die 2, ensure the processing quality, and there is no need for frequent shutdown for temperature reduction operation, which is beneficial to improving the processing efficiency.

[0026] Preferably, please refer to Figure 1 and 4 As shown, a cooling channel 41 is opened in the guide member 4, and the cooling channel 41 communicates with the lower die cooling cavity 25. The water pump 82 in the liquid storage tank 8 communicates with the cooling channel 41 through the liquid outlet pipe 81.

[0027] It can be understood that the guide member 4 can not only play a guiding role in the die closing of the upper die 3 and the lower die 2 to improve the accuracy and stability of die closing, but also play a role in transporting the cooling liquid to the lower die cooling cavity 25. Since the cooling channel 41 is opened in the guide member 4, it can also cool the guide member 4 to prevent the temperature of the guide member 4 itself from being too high and affecting the temperatures of the upper die 3 and the lower die 2.

[0028] Optionally, the guide member 4 is of a columnar structure. A plurality of connection through holes are opened on the top plate of the lower die cooling cavity 25 of the lower die 2. Connection sleeves 23 are arranged at the connection through holes, and the bottom end of the guide member 4 is threadedly connected to the connection sleeves 23, so as to realize the communication between the cooling channel 41 and the lower die cooling cavity 25.

[0029] Preferably, please refer to Figure 4 、 5 As shown, a connection frame 9 is arranged at the top of adjacent guide members 4. The water pump 82 in the liquid storage tank 8 communicates with a preset liquid storage cavity 91 in the connection frame 9 through the liquid outlet pipe 81. A guide support assembly 10 is arranged at the bottom of the connection frame 9, and the guide support assembly 10 communicates with the liquid storage cavity 91. A limit cavity 32 is opened at the top of the upper die 3, and the limit cavity 32 communicates with the upper die cooling cavity 33. The guide support assembly 10 is used to penetrate into the limit cavity 32 to support the upper die 3 when the upper die 3 rises and transport the liquid in the liquid storage cavity 91 to the limit cavity 32 and the upper die cooling cavity 33.

[0030] It can be understood that the connecting frame 9 can connect adjacent guide members 4, the cooling channels 41 are communicated with the liquid storage cavity 91, and can be communicated with the liquid storage tank 8 through the liquid storage cavity 91, so as to realize that the cooling liquid in the liquid storage tank 8 is transported into the liquid storage cavity 91 and then respectively transported into each guide member 4. The connecting frame 9 is connected to the guide member 4 by bolts, which facilitates the disassembly and assembly of the connecting frame 9. It should be noted that when the upper die 3 needs to be replaced, the upper die 3 can be conveniently replaced by disassembling the connecting frame 9. Or when the upper die 3 needs to be lifted for cleaning or cooling operations, the upper die 3 is manually lifted and connected to the guiding and supporting assembly 10 through the limiting cavity 32 of the upper die 3. The guiding and supporting assembly 10 guides and supports the upper die 3, and the guiding and supporting assembly 10 can also transport and introduce the cooling liquid in the liquid storage cavity 91 into the limiting cavity 32 and the upper die cooling cavity 33, which can accelerate the cooling effect of the upper die 3, facilitate the cleaning of the upper die 3, and also help to position and calibrate the new upper die 3 through the support of the guiding and supporting assembly 10.

[0031] Preferably, as shown in Figure 4 , the guiding and supporting assembly 10 includes a support plate 101, a connecting rod 102, a second sealing plate 104, a compression spring 105 and a guiding frame 106. The guiding frame 106 is arranged at the bottom of the connecting frame 9. An out-liquid channel 93 is formed on the bottom plate of the connecting frame 9. The top of the guiding frame 106 is communicated with the liquid storage cavity 91 through the out-liquid channel 93. The bottom of the guiding frame 106 is open. The connecting rod 102 passes through the guiding frame 106 and the top end of the connecting rod 102 extends out of the connecting frame 9. The second sealing plate 104 is sleeved on the connecting rod 102. The second sealing plate 104 is used to be driven by the connecting rod 102 to seal the out-liquid channel 93. The bottom end of the connecting rod 102 is hinged to the first end of the support plate 101. The middle of the support plate 101 is connected to the bottom end of the side wall on one side of the guiding frame 106 through the compression spring 105. The upper die 3 is used to abut against the second end of the support plate 101 through the bottom surface of the top plate of the upper die cooling cavity 33 after the support plate 101 penetrates into the limiting cavity 32, and presses down the second end of the support plate 101, thereby driving the first end of the support plate 101 and the connecting rod 102 to rise, so that the second sealing plate 104 rises to open the out-liquid channel 93 and then abuts against the top plate of the connecting frame 9 to limit the connecting rod 102.

[0032] It can be understood that the support plate 101 is installed in an inclined manner. During the upward movement of the upper mold 3, the second end of the support plate 101 is lifted upward by pressing down the connecting rod 102, making it easier for the inclined support plate 101 to penetrate into the limiting cavity 32. Subsequently, the connecting rod 102 is lifted, causing the second end of the support plate 101 to move downward and abut against the top plate of the upper mold cooling cavity 33. Then, the upper mold 3 can be placed on the support plate 101 and supported by the support plate 101, facilitating the disassembly or cleaning of the upper mold 3. At this time, the first end of the support plate 101 pushes the connecting rod 102 and the second sealing plate 104 upward, and can also open the liquid outlet channel 93, enabling the cooling liquid in the liquid storage cavity 91 to enter the upper mold cooling cavity 33 through the guiding frame 106, realizing the cooling of the upper mold 3.

[0033] In some embodiments, in order to achieve intermittent cooling of the upper mold 3 so that the temperature of the upper mold 3 is maintained within a certain range, to avoid the temperature of the upper mold 3 being too low and not conducive to the fluidity of the injection molding raw material in the upper mold 3, and also to avoid the temperature of the upper mold 3 being too high and not conducive to ensuring the molding efficiency, it is not necessary to keep the upper mold 3 connected to the liquid storage tank 8 through the liquid outlet pipe 81 at all times. The upper mold 3 can be intermittently in contact with the support plate 101 by rising intermittently, realizing intermittent cooling and temperature reduction of the upper mold 3.

[0034] Preferably, please refer to Figure 4 As shown, a handle 103 is provided at the top end of the connecting rod 102, a rotating shaft is provided at the first end of the support plate 101, a connecting bearing is provided on the rotating shaft, and the bottom end of the connecting rod 102 is connected to the connecting bearing.

[0035] It can be understood that the connecting rod 102 can be conveniently driven to rise and fall through the handle 103 at the top end of the connecting rod 102. The bottom end of the connecting rod 102 is hinged to the support plate 101 through a connecting bearing. The connecting rod 102 and the second sealing plate 104 can be driven to rotate through the handle 103. After the liquid outlet channel 93 of the liquid storage cavity 91 is opened by driving the second sealing plate 104 to rise through the connecting rod 102, by rotating the connecting rod 102 and the second sealing plate 104, the second sealing plate 104 will not close the liquid outlet channel 93 again when it descends, so as to keep the liquid outlet channel 93 delivering the cooling liquid. When it is necessary to close the liquid outlet channel 93, after rotating the connecting rod 102 to drive the second sealing plate 104 to rotate, it can be embedded and sealed with the liquid outlet channel 93.

[0036] Optionally, two limiting plates 92 are provided at the liquid outlet channel 93 of the liquid storage cavity 91. An outlet cavity is formed between the two limiting plates 92, and the second sealing plate 104 is used to seal the outlet cavity. The two limiting plates 92 are used to support the second sealing plate 104 after the second sealing plate 104 rises and rotates to open the outlet cavity, so that the second sealing plate 104 no longer seals the outlet cavity and keeps continuous liquid outlet.

[0037] Preferably, please refer to Figure 3, 6 As shown in Figure 8, the injection mold base of the automotive rearview mirror bracket further includes a return pipe 5. The lower die liquid outlet pipe 24 and the upper die liquid outlet pipe 31 are both connected to the inlet of the return pipe 5. The outlet of the return pipe 5 is connected to the heat dissipation frame assembly 7. A heat dissipation plate assembly 6 is provided on the return pipe 5, and the heat dissipation plate assembly 6 is used to dissipate heat from the liquid in the return pipe 5.

[0038] In this preferred embodiment, a temporary liquid storage frame 51 is provided on the return pipe 5. The heat dissipation plate assembly 6 is arranged in the temporary liquid storage frame 51. The bottom end of the return pipe 5 is connected to the heat dissipation frame assembly 7 through a connecting pipe 52 that is vertically connected to the return pipe 5. The heat dissipation plate assembly 6 includes a heat dissipation plate 61, a first sealing plate 64, and a limiting spring 65. The heat dissipation plate 61 penetrates through the side wall of the temporary liquid storage frame 51. The first end of the heat dissipation plate 61 is located inside the temporary liquid storage frame 51, and the second end of the heat dissipation plate 61 is located outside the temporary liquid storage frame 51. The first sealing plate 64 is movably arranged in the return pipe 5. The first end of the limiting spring 65 is connected to the bottom surface of the first sealing plate 64, and the second end of the limiting spring 65 is connected to the bottom plate of the connecting pipe 52. The first sealing plate 64 is used to receive and block the liquid in the return pipe 5 and make the liquid overflow the first end of the heat dissipation plate 61, and under the action of the gravity of the continuously accumulating liquid in the return pipe 5, push the first sealing plate 64 downward into the connecting pipe 52 to open the channel between the return pipe 5 and the connecting pipe 52.

[0039] It can be understood that the liquid in the return pipe 5 can be temporarily blocked from entering the connecting pipe 52 by the first sealing plate 64 that can move up and down. When more and more liquid is blocked and gradually overflows the heat dissipation plate 61, the heat dissipation of the liquid can be accelerated through the heat dissipation plate 61. When the liquid continues to increase, the first sealing plate 64 is pressed downward under the action of gravity until the channel between the return pipe 5 and the connecting pipe 52 is opened, allowing a part of the liquid to enter the heat dissipation frame assembly 7. When the connecting pipe 52 is connected to the heat dissipation frame assembly 7 through a circulation pipe 71, it is beneficial to avoid the circulation pipe 71 continuously flowing with liquid and keep a certain temperature all the time, which is not conducive to the cooling of the circulation pipe 71. And by intermittently submerging the heat dissipation plate 61 with the liquid, it is avoided that the heat dissipation plate 61 is always immersed in the liquid, which is beneficial to the temperature of the heat dissipation plate 61 being intermittently reduced, thereby improving the heat dissipation effect of the heat dissipation plate 61.

[0040] Optionally, the connecting pipe 52 and the heat dissipation frame assembly 7 are connected through a circulation pipe 71, and the circulation pipe 71 is a reciprocally bent pipe structure.

[0041] Preferably, please refer to Figure 10 As shown, the first end of the heat dissipation plate 61 is provided with a contact part 62, and the contact part 62 is a scattered strip structure. The second end of the heat dissipation plate 61 is provided with a heat dissipation part 63, and a plurality of strip-shaped through holes are spaced apart on the heat dissipation part 63.

[0042] It is understandable that the contact portion 62 can not only break up the liquid falling in the reflux pipe 5, but also increase the contact range with the liquid, thereby facilitating the conduction of more heat. The heat dissipation portion 63 is provided with a plurality of strip-shaped through holes at intervals, so that the heat dissipation portion 63 is an arranged strip-shaped structure, which is also conducive to heat dissipation and improves the efficiency of heat conduction and heat dissipation of the heat dissipation plate 61.

[0043] Preferably, please refer to Figures 9 - 12 As shown, the heat dissipation frame assembly 7 includes a heat dissipation frame 72, a partition plate 73, a first heat dissipation member 77 and a second heat dissipation member 78. The partition plate 73 is arranged in the heat dissipation frame 72, and the partition plate 73 divides the heat dissipation frame 72 into a first heat dissipation cavity 74 and a second heat dissipation cavity 75 in an upper and lower manner. The first heat dissipation member 77 is arranged in the first heat dissipation cavity 74, and the second heat dissipation member 78 is arranged in the second heat dissipation cavity 75. The first heat dissipation member 77 and the second heat dissipation member 78 both include scattering heat dissipation strips, and the outer ends of the heat dissipation strips both extend out of the heat dissipation frame 72. A first channel is opened on the partition plate 73, and a second channel is opened on the connecting bottom plate 76 of the heat dissipation frame 72. The second channel is connected to the liquid storage tank 8 through a liquid inlet pipe 84. A linkage baffle assembly is arranged in the heat dissipation frame 72, and the linkage baffle assembly is used to open or close the first channel and the second channel at the same time.

[0044] It is understandable that the heat dissipation frame 72 is divided into two upper and lower first heat dissipation chambers 74 and second heat dissipation chambers 75 by the partition plate 73, and the liquid is sequentially heat-dissipated by the first heat dissipation member 77 and the second heat dissipation member 78, respectively, and the linkage baffle assembly can open or close the first channel and the second channel at the same time, thereby realizing intermittent heat dissipation of the liquid in the first heat dissipation chamber 74 and the second heat dissipation chamber 75, avoiding the heat dissipation frame 72 being filled with liquid with a certain temperature at all times, which is conducive to the intermittent rapid heat dissipation of the heat dissipation frame 72 itself, and then cooperates with the first heat dissipation member 77 and the second heat dissipation member 78 to realize effective heat dissipation and cooling of the liquid. Since the first heat dissipation member 77 and the second heat dissipation member 78 both include scattering heat dissipation strips, on the one hand, the liquid falling into the first heat dissipation chamber 74 and the second heat dissipation chamber 75 can be dispersed, and on the other hand, it is also conducive to increasing the contact range with the liquid, which is conducive to extracting more heat and improving the heat dissipation and cooling effect.

[0045] Preferably, please refer to Figures 9 - 12As shown in the figure, the linkage baffle assembly includes a linkage rod 79, a first baffle 710, a second baffle 711 and a third baffle 712. The linkage rod 79 is movably arranged in the heat dissipation frame 72 and the linkage rod 79 sequentially passes through the first channel and the second channel. The first baffle 710 is arranged at the top end of the linkage rod 79 and above the first channel. The third baffle 712 is arranged at the bottom end of the linkage rod 79. The second baffle 711 is sleeved on the middle part of the linkage rod 79 and above the second channel. A cam 83 is arranged in the liquid inlet pipe 84. The cam 83 is driven to rotate by a driving motor arranged outside the liquid inlet pipe 84. The cam 83 is in rolling connection with the bottom surface of the third baffle 712. The cam 83 is used to drive the third baffle 712 to cycle up and down, and further drive the linkage rod 79, the first baffle 710 and the second baffle 711 to cycle up and down through the third baffle 712, so as to cyclically open or close the first channel and the second channel.

[0046] It can be understood that when the cam 83 rotates, it can push the third baffle 712 and the linkage rod 79 to cycle up and down, and further drive the first baffle 710 and the second baffle 711 to intermittently open the first channel and the second channel through the linkage rod 79, so as to realize the intermittent falling of the liquid in the first heat dissipation cavity 74 and the second heat dissipation cavity 75, so as to avoid the heat dissipation frame 72 being always filled with liquid with a certain temperature, which is beneficial to the heat dissipation of the heat dissipation frame 72 itself, and further improve the heat dissipation effect of the first heat dissipation member 77 and the second heat dissipation member 78.

[0047] In addition, the present application can reduce the use of additional chemical reagent cooling and reduce the overall cost. Since the cooling liquid does not need to be cooled to too low a temperature, by extending the cooling channel and realizing multi-stage intermittent heat dissipation cooling treatment, it can effectively ensure that the cooling liquid is cooled to a lower temperature and recycled to timely take out the heat of the lower mold 2 and the upper mold 3, ensure that the temperatures of the lower mold 2 and the upper mold 3 are within a suitable range, and ensure the processing quality and efficiency.

[0048] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0049] In this text, specific examples are used to elaborate on the principles and implementation manners of the present application. The description of the above examples is only used to help understand the method and its core idea of the present application. The above is only the preferred implementation manner of the present application. It should be noted that due to the limitation of literal expression, and objectively there are infinite specific structures. For those of ordinary skill in the art in this technical field, without departing from the principles of the present application, several improvements, refinements or changes can also be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the inventive concept and technical solution to other occasions without improvement, shall all be regarded as the protection scope of the present application.

Claims

1. An injection mold frame for a rearview mirror bracket of an automobile, comprising a workbench (1), a lower mold (2) and an upper mold (3), wherein the workbench (1) is used to support and limit the lower mold (2), and is characterized in that: A plurality of guide members (4) are supported on the workbench (1), the lower mold (2) and the upper mold (3) are both sleeved on the guide members (4), a lower mold cooling cavity (25) is provided in the lower mold (2), a lower mold liquid outlet pipe (24) is provided on the side wall of the lower mold cooling cavity (25), an upper mold cooling cavity (33) is provided in the upper mold (3), an upper mold liquid outlet pipe (31) is provided on the side wall of the upper mold cooling cavity (33), and a heat dissipation frame assembly (7) and a heat dissipation frame assembly (7) are provided below the workbench (1). The liquid storage tank (8), the lower mold liquid outlet pipe (24) and the upper mold liquid outlet pipe (31) are all in communication with the heat dissipation frame assembly (7). The heat dissipation frame assembly (7) is in communication with the liquid storage tank (8). A water pump (82) for pumping liquid in the liquid storage tank (8) into the lower mold (2) and the upper mold (3) is provided in the liquid storage tank (8). The heat dissipation frame assembly (7) is used to dissipate and cool liquid flowing out of the lower mold cooling cavity (25) and the upper mold cooling cavity (33) and then transport it to the liquid storage tank (8).

2. The injection mold frame of the automobile rearview mirror bracket according to claim 1, characterized in that: A cooling channel (41) is provided in the guide member (4), the cooling channel (41) is communicated with the lower mold cooling cavity (25), and a water pump (82) in the liquid storage tank (8) is communicated with the cooling channel (41) via a liquid outlet pipe (81).

3. The injection mold frame for the automobile rearview mirror bracket according to claim 1, characterized in that: A connecting frame (9) is arranged at the top of the adjacent guide member (4); a water pump (82) in the liquid storage tank (8) is connected to a preset liquid storage chamber (91) in the connecting frame (9) through a liquid outlet pipe (81); a guiding support assembly (10) is arranged at the bottom of the connecting frame (9); the guiding support assembly (10) is connected to the liquid storage chamber (91); a limiting chamber (32) is provided at the top of the upper mold (3); the limiting chamber (32) is connected to the upper mold cooling chamber (33); the guiding support assembly (10) is used to penetrate into the limiting chamber (32) when the upper mold (3) rises to support the upper mold (3) and to transport the liquid in the liquid storage chamber (91) to the limiting chamber (32) and the upper mold cooling chamber (33).

4. The injection mold frame for the automobile rearview mirror bracket according to claim 3, characterized in that: The guide support assembly (10) comprises a support plate (101), a connecting rod (102), a second sealing plate (104), a compression spring (105) and a guide frame (106); the guide frame (106) is arranged at the bottom of the connecting frame (9); a liquid outlet channel (93) is provided on the bottom plate of the connecting frame (9); the top of the guide frame (106) is communicated with the liquid storage chamber (91) through the liquid outlet channel (93); the bottom of the guide frame (106) is open; the connecting rod (102) is inserted into the guide frame (106) and the top end of the connecting rod (102) is inserted outside the connecting frame (9); the second sealing plate (104) is sleeved on the connecting rod (102); the second sealing plate (104) is used to be connected to the connecting rod (102); The liquid outlet channel (93) is driven to be sealed, the bottom end of the connecting rod (102) is hinged to the first end of the support plate (101), the middle part of the support plate (101) is connected to the bottom end of the side wall of one side of the guide frame (106) through a compression spring (105), and the upper mold (3) is used to abut the second end of the support plate (101) through the bottom surface of the top plate of the upper mold cooling cavity (33) after the support plate (101) penetrates the limiting cavity (32), and press the second end of the support plate (101) downward, thereby driving the first end of the support plate (101) and the connecting rod (102) to rise, so that the second sealing plate (104) rises to open the liquid outlet channel (93) and then abuts against the top plate of the connecting frame (9) to limit the connecting rod (102).

5. The injection mold frame of the automobile rearview mirror bracket according to claim 4, characterized in that: A handle (103) is provided at the top end of the connecting rod (102), a rotating shaft is provided at the first end of the supporting plate (101), a connecting bearing is provided on the rotating shaft, and the bottom end of the connecting rod (102) is connected to the connecting bearing.

6. The automobile rearview mirror bracket injection mold frame according to claim 1, characterized in that: The automobile rearview mirror bracket injection mold frame further comprises a reflux pipe (5), a lower mold liquid outlet pipe (24) and an upper mold liquid outlet pipe (31) are both connected to the inlet of the reflux pipe (5), the outlet of the reflux pipe (5) is connected to the heat dissipation frame assembly (7), and a heat dissipation plate assembly (6) is provided on the reflux pipe (5), and the heat dissipation plate assembly (6) is used to dissipate heat from liquid in the reflux pipe (5).

7. The injection mold frame for the automobile rearview mirror bracket according to claim 6, characterized in that: A temporary liquid storage frame (51) is arranged on the return pipe (5), and a heat sink assembly (6) is arranged in the temporary liquid storage frame (51). The bottom end of the return pipe (5) is connected to the heat sink assembly (7) via a connecting pipe (52) vertically connected to the return pipe (5). The heat sink assembly (6) comprises a heat sink (61), a first sealing plate (64) and a limit spring (65). The heat sink (61) is arranged through a side wall of the temporary liquid storage frame (51). A first end of the heat sink (61) is located in the temporary liquid storage frame (51), and a second end of the heat sink (61) is located outside the temporary liquid storage frame (51). On the outside, a first sealing plate (64) is movably arranged in the return pipe (5), a first end of a limit spring (65) is connected to the bottom surface of the first sealing plate (64), and a second end of the limit spring (65) is connected to the bottom plate of the connecting pipe (52). The first sealing plate (64) is used to receive and block the liquid in the return pipe (5) and allow the liquid to overflow the first end of the heat sink (61), and to push the first sealing plate (64) downward into the connecting pipe (52) under the action of gravity of the liquid continuously accumulated in the return pipe (5) to open a passage between the return pipe (5) and the connecting pipe (52).

8. The injection mold frame for the automobile rearview mirror bracket according to claim 7, characterized in that: A contact portion (62) is provided at the first end of the heat dissipation plate (61), the contact portion (62) being a scattering strip-shaped structure, and a heat dissipation portion (63) is provided at the second end of the heat dissipation plate (61), a plurality of strip-shaped through holes being provided at intervals on the heat dissipation portion (63).

9. The injection mold frame for the automobile rearview mirror bracket according to claim 1, characterized in that: The heat dissipation frame assembly (7) comprises a heat dissipation frame (72), a partition plate (73), a first heat dissipation element (77) and a second heat dissipation element (78). The partition plate (73) is arranged in the heat dissipation frame (72). The partition plate (73) divides the heat dissipation frame (72) into a first heat dissipation cavity (74) and a second heat dissipation cavity (75) located above and below. The first heat dissipation element (77) is arranged in the first heat dissipation cavity (74). The second heat dissipation element (78) is arranged in the second heat dissipation cavity (75). The first heat dissipation element (77) and the second heat dissipation element (78) both comprise scattering heat dissipation strips. The outer ends of the heat dissipation strips both extend out of the heat dissipation frame (72). The partition plate (73) is provided with a first channel. The connecting bottom plate (76) of the heat dissipation frame (72) is provided with a second channel. The second channel is connected to the liquid storage tank (8) through a liquid inlet pipe (84). A linkage baffle assembly is arranged in the heat dissipation frame (72). The linkage baffle assembly is used to open or close the first channel and the second channel simultaneously.

10. The injection mold frame of the automobile rearview mirror bracket according to claim 9, characterized in that: The linkage baffle assembly comprises a linkage rod (79), a first baffle (710), a second baffle (711) and a third baffle (712); the linkage rod (79) is movably arranged in the heat dissipation frame (72) and the linkage rod (79) passes through the first channel and the second channel in sequence; the first baffle (710) is arranged at the top end of the linkage rod (79) and is located above the first channel; the third baffle (712) is arranged at the bottom end of the linkage rod (79); the second baffle (711) is sleeved in the middle of the linkage rod (79) and is located at the third baffle (712); A cam (83) is arranged in the liquid inlet pipe (84) above the second channel. The cam (83) is driven to rotate by a driving motor arranged outside the liquid inlet pipe (84). The cam (83) is rollingly connected to the bottom surface of the third baffle plate (712). The cam (83) is used to drive the third baffle plate (712) to rise and fall cyclically, thereby driving the linkage rod (79) and the first baffle plate (710) and the second baffle plate (711) to rise and fall cyclically through the third baffle plate (712) to cyclically open or close the first channel and the second channel.

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