Mold temperature control device

Abstract

The utility model provides a mould heat preservation device, including first heat preservation subassembly and second heat preservation subassembly, first heat preservation subassembly includes first heat preservation board and first fixed frame, first heat preservation board includes first heat insulation layer and first reflection layer, first heat insulation layer has the first heat preservation inner chamber of can cover the outer surface of upper die plate, first heating spare is inlayed in first heat insulation layer, first reflection layer covers the outer surface of first heat insulation layer, first fixed frame has the first cavity of can accommodate first heat preservation board, second heat preservation subassembly includes second heat preservation board and second fixed frame, second heat preservation board includes second heat insulation layer and second reflection layer, second heat insulation layer has the second heat preservation inner chamber of can cover the outer surface of lower die plate, second heating spare is inlayed in second heat insulation layer, second reflection layer covers the outer surface of second heat insulation layer, second fixed frame has the second cavity of can accommodate second heat preservation board.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a mold heat preservation device. Background Technology

[0002] Currently, injection molding technology refers to injecting molten rubber into the molding cavity of a mold through a nozzle and gate under high pressure. The molten rubber cools and hardens in the molding cavity to form a product. Injection molds are usually made of metal, which has high thermal conductivity. During the injection process, the temperature of the molten rubber tends to drop as it flows into the molding cavity, leading to increased viscosity, decreased fluidity, and even solidification and cessation of flow, thus affecting normal production.

[0003] In the prior art, in order to maintain the molten state of the molten rubber, a heating component or hot runner plate is generally added above the upper mold.

[0004] However, molds generally do not have insulation boards or heat insulation layers. The heat is conducted to the surface of the injection mold and then transferred to the outside through heat conduction and heat radiation, resulting in heat loss. Since mold production requires maintaining a molten state, energy consumption is increased to maintain the high temperature inside the mold body, resulting in energy waste and increased production costs. Utility Model Content

[0005] The purpose of this utility model is to provide a mold insulation device that aims to solve or at least partially solve the shortcomings of the above-mentioned background technology. It can not only maintain the preset temperature inside the injection mold, reduce energy consumption, and reduce production costs, but also is easy to install on existing injection molds.

[0006] This utility model provides a mold insulation device, including a first insulation component detachably mounted on the upper template of an injection mold and a second insulation component detachably mounted on the lower template of the injection mold; the first insulation component includes a first insulation plate and a first fixing frame, the first insulation plate includes a first heat insulation layer and a first reflective layer, the first heat insulation layer has a first heat insulation inner cavity that can cover the outer surface of the upper template, a first heating element is embedded in the first heat insulation layer, the first heating element is used to heat and maintain the temperature of the upper template, the first reflective layer covers the outer surface of the first heat insulation layer, and the first fixing frame has a first cavity that can accommodate the first insulation plate; the second insulation component includes a second insulation plate and a second fixing frame, the second insulation plate includes a second heat insulation layer and a second reflective layer, the second heat insulation layer has a second heat insulation inner cavity that can cover the outer surface of the lower template, a second heating element is embedded in the second heat insulation layer, the second heating element is used to heat and maintain the temperature of the lower template, the second reflective layer covers the outer surface of the second heat insulation layer, and the second fixing frame has a second cavity that can accommodate the second insulation plate.

[0007] Furthermore, both the first and second insulation layers are made of EPP.

[0008] Furthermore, both the first and second reflective layers are made of aluminum foil.

[0009] Furthermore, both the first heating element and the second heating element are flexible heating elements.

[0010] Furthermore, a first temperature sensor is embedded on the inner surface of the first heat insulation layer, which is used to monitor the temperature of the upper template; a second temperature sensor is embedded on the inner surface of the second heat insulation layer, which is used to monitor the temperature of the lower template.

[0011] Furthermore, the first heat insulation layer is bonded to the first reflective layer, and the second heat insulation layer is bonded to the second reflective layer.

[0012] Furthermore, the first insulation board is fixedly connected to the first fixing frame by fasteners, and the second insulation board is fixedly connected to the second fixing frame by fasteners.

[0013] Furthermore, the first heat insulation layer is embedded with a first fixing block, and the first fixing block has a first mating hole that mates with a fastener; the second heat insulation layer is embedded with a second fixing block, and the second fixing block has a second mating hole that mates with a fastener.

[0014] Furthermore, the first reflective layer has a first through hole, and the first through hole and the first mating hole are coaxially arranged; the second reflective layer has a second through hole, and the second through hole and the second mating hole are coaxially arranged.

[0015] Furthermore, the first fixing frame has a first fixing hole through it, and the first fixing hole and the first connecting hole are coaxially arranged; the second fixing frame has a second fixing hole through it, and the second fixing hole and the second connecting hole are coaxially arranged.

[0016] The mold insulation device provided in this embodiment of the invention, through the cooperation of a first heat insulation layer, a first heating element, and a first reflective layer, allows the first heating element to heat the upper mold to the temperature required for production, preventing the temperature of the molten rubber from dropping. The first heat insulation layer provides insulation for the upper mold, and the first reflective layer reflects heat and directs it to the upper mold, reducing heat loss and further insulating the upper mold. Similarly, through the cooperation of a second heat insulation layer, a second heating element, and a second reflective layer, the second heating element heats the lower mold to the temperature required for production, preventing the temperature of the molten rubber from dropping. The second heat insulation layer provides insulation for the lower mold, and the second reflective layer reflects heat and directs it to the lower mold, reducing heat loss and further insulating the lower mold. Therefore, this mold insulation device can maintain a preset temperature inside the injection mold, reduce energy consumption, and lower production costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a cross-section of a mold heat preservation device according to the present invention. Figure 1 .

[0019] Figure 2 for Figure 1 A magnified diagram of point A in the middle.

[0020] Figure 3 for Figure 1 A magnified diagram of point B in the middle.

[0021] Figure 4 for Figure 1 An exploded view of the first insulation component is shown.

[0022] Figure 5 for Figure 1 An exploded view of the second insulation component is shown.

[0023] Figure 6 This is a cross-section of a mold heat preservation device according to the present invention. Figure 2 .

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 10. First insulation component; 100. Upper template; 101. First fastening hole; 11. First insulation board; 111. First heat insulation layer; 112. First reflective layer; 113. First insulation inner cavity; 114. First heating element; 115. First temperature sensor; 116. First fixing block; 117. First mating hole; 118. First mating groove; 119. First connecting hole; 12. First fixing frame; 121. First cavity; 122. First fixing hole; 13. First mounting hole; 20. Second insulation component; 200. Lower template; 201. Second fastening hole; 21. Second insulation board; 211. Second heat insulation layer; 212. Second reflective layer; 213. Second insulation inner cavity; 214. Second heating element; 215. Second temperature sensor; 216. Second fixing block; 217. Second mating hole; 218. Second mating groove; 219. Second connecting hole; 22. Second fixing frame; 221. Second cavity; 222. Second fixing hole; 23. Second mounting hole. Detailed Implementation

[0026] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0027] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0028] The directional terms such as "up," "down," "left," "right," "front," "back," "top," and "bottom" (if present) used in the specification and claims of this utility model are defined according to the position of the structures in the drawings and the relative positions of the structures, and are only for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of directional terms should not limit the scope of protection claimed in this application.

[0029] Please see Figure 1 , Figure 4 and Figure 5 A mold insulation device includes a first insulation component 10 detachably disposed on the upper template 100 of the injection mold and a second insulation component 20 detachably disposed on the lower template 200 of the injection mold.

[0030] The first insulation component 10 includes a first insulation board 11 and a first fixing frame 12. The first insulation board 11 includes a first heat insulation layer 111 and a first reflective layer 112. The first heat insulation layer 111 has a first heat insulation cavity 113 that can cover the outer surface of the upper template 100. A first heating element 114 is embedded in the first heat insulation layer 111. The first heating element 114 is used to heat and maintain the temperature of the upper template 100. The first reflective layer 112 covers the outer surface of the first heat insulation layer 111. The first fixing frame 12 has a first cavity 121 that can accommodate the first insulation board 11.

[0031] The second insulation component 20 includes a second insulation board 21 and a second fixing frame 22. The second insulation board 21 includes a second heat insulation layer 211 and a second reflective layer 212. The second heat insulation layer 211 has a second heat insulation cavity 213 that can cover the outer surface of the lower template 200. A second heating element 214 is embedded in the second heat insulation layer 211. The second heating element 214 is used to heat and maintain the temperature of the lower template 200. The second reflective layer 212 covers the outer surface of the second heat insulation layer 211. The second fixing frame 22 has a second cavity 221 that can accommodate the second insulation board 21.

[0032] As described above, the mold insulation device provided by this utility model, through the cooperation of the first heat insulation layer 111, the first heating element 114, and the first reflective layer 112, allows the first heating element 114 to heat the upper mold plate 100 to the temperature required for injection molding production to prevent the temperature of the molten rubber from dropping. The first heat insulation layer 111 can keep the upper mold plate 100 warm, and the first reflective layer 112 can reflect heat and allow heat to flow to the upper mold plate 100, reducing heat loss from the upper mold plate 100 and further keeping it warm. Through the cooperation of the second heat insulation layer 211, the second heating element 214, and the second reflective layer 212, the second heating element 214 can heat the lower mold plate 200 to the temperature required for injection molding production to prevent the temperature of the molten rubber from dropping. The second heat insulation layer 211 can keep the lower mold plate 200 warm, and the second reflective layer 212 can reflect heat and allow heat to flow to the lower mold plate 200, reducing heat loss from the lower mold plate 200 and further keeping it warm. Therefore, this mold insulation device can maintain the preset temperature inside the injection mold, reduce energy consumption, and lower production costs.

[0033] Furthermore, in this embodiment, both the first insulation layer 111 and the second insulation layer 211 are made of expanded polypropylene (EPP). Expanded polypropylene has the advantages of good thermal insulation performance and lightweight, which enables the mold insulation device to have good thermal insulation performance and be easy to lift and move; in addition, the price of expanded polypropylene is relatively low, which can reduce the manufacturing cost of the mold insulation device.

[0034] Furthermore, in this embodiment, both the first reflective layer 112 and the second reflective layer 212 are made of aluminum foil. Aluminum foil has the advantages of efficient heat insulation and reflection as well as lightweight. It can enable the first reflective layer 112 to reflect the heat emitted by the upper template 100 and the heat generated by the first heating element 114, and enable the second reflective layer 212 to reflect the heat emitted by the lower template 200 and the heat generated by the second heating element 214, so that the heat flows into the interior of the injection mold and reduces the heat loss of the injection mold.

[0035] Since EPP and aluminum foil are both lightweight, they make the mold insulation device lighter, which makes it easier for workers to lift, move, and install the mold insulation device on the injection mold.

[0036] Furthermore, both the first heating element 114 and the second heating element 214 are flexible heating elements, including graphene electrothermal films, carbon nanotube electrothermal films, etc. Both the first heating element 114 and the second heating element 214 require an external power source. In this embodiment, both the first heating element 114 and the second heating element 214 are graphene electrothermal films. Graphene electrothermal films have the characteristics of good flexibility, uniform heating, rapid heating, and a high safety factor. On the one hand, the flexibility of the graphene electrothermal film allows the first heating element 114 and the second heating element 214 to be three-dimensionally embedded within the first insulation layer 111 and the second insulation layer 211 respectively to achieve better heat preservation. On the other hand, the uniform and rapid heating characteristics of the graphene electrothermal film enable uniform heat preservation.

[0037] Furthermore, please refer to Figure 1 A first temperature sensor 115 is embedded on the inner surface of the first heat insulation layer 111. The first temperature sensor 115 is electrically connected to the first heating element 114. The first temperature sensor 115 is used to monitor the temperature of the upper template 100 to control the operation of the first heating element 114, thereby maintaining the temperature of the upper template 100. A second temperature sensor 215 is embedded on the inner surface of the second heat insulation layer 211. The second temperature sensor 215 is electrically connected to the second heating element 214. The second temperature sensor 215 is used to monitor the temperature of the lower template 200 to control the operation of the second heating element 214, thereby maintaining the temperature of the lower template 200.

[0038] More specifically, if the first heat insulation layer 111 is bonded to the first reflective layer 112, then the outer surface of the first heat insulation layer 111 is in contact with the inner surface of the first reflective layer 112; if the second heat insulation layer 211 is bonded to the second reflective layer 212, then the outer surface of the second heat insulation layer 211 is in contact with the inner surface of the second reflective layer 212.

[0039] Please see Figures 1-3 The first insulation board 11 is fixedly connected to the first fixing frame 12 by fasteners, and the second insulation board 21 is fixedly connected to the second fixing frame 22 by fasteners. The first reflective layer 112 and the second reflective layer 212 are both made of aluminum foil, which is relatively thin and easily damaged by bumps. The first fixing frame 12 and the second fixing frame 22 respectively play a protective role for the first reflective layer 112 and the second reflective layer 212.

[0040] Furthermore, the first heat insulation layer 111 is embedded with a first fixing block 116, the first fixing block 116 having a first mating hole 117 that mates with a fastener, and the first heat insulation layer 111 having a first mating groove 118 corresponding to the first mating hole 117, the first mating groove 118 being connected to the first mating hole 117. The second heat insulation layer 211 is embedded with a second fixing block 216, the second fixing block 216 having a second mating hole 217 that mates with a fastener, and the second heat insulation layer 211 having a second mating groove 218 corresponding to the second mating hole 217, the second mating groove 218 being connected to the second mating hole 217.

[0041] More specifically, the first reflective layer 112 has a first connecting hole 119 through it, and the first fixing frame 12 has a first fixing hole 122 through it. The first fixing hole 122, the first connecting hole 119, and the first mating hole 117 are coaxially arranged. Fasteners are sequentially inserted into the first fixing hole 122, the first connecting hole 119, and the first mating groove 118 to be screwed into the first mating hole 117, thereby fixing the first insulation board 11 to the first fixing frame 12. The second reflective layer 212 has a second connecting hole 219 through it, and the second fixing frame 22 has a second fixing hole 222 through it. The second fixing hole 222, the second connecting hole 219, and the second mating hole 217 are coaxially arranged. Fasteners are sequentially inserted into the second fixing hole 222, the second connecting hole 219, and the second mating groove 218 to be screwed into the second mating hole 217, thereby fixing the second insulation board 21 to the second fixing frame 22.

[0042] Additionally, please see Figure 6 The first heat insulation component 10 has a first mounting hole 13 extending horizontally through its outer side wall. The upper template 100 has a first fastening hole 101 corresponding to the first mounting hole 13. Fasteners are inserted into the first mounting hole 13 and screwed into the first fastening hole 101 to realize the installation of the first heat insulation component 10 on the upper template 100. The first mounting hole 13 passes through the first fixing frame 12, the first reflective layer 112, and the first heat insulation layer 111 in sequence, and the first mounting hole 13 does not interfere with the arrangement of the first heating element 114.

[0043] The second insulation component 20 has a second mounting hole 23 extending horizontally through its outer side wall. The lower template 200 has a second fastening hole 201 corresponding to the second mounting hole 23. Fasteners are inserted into the second mounting hole 23 and screwed into the second fastening hole 201 to install the second insulation component 20 on the lower template 200. The second mounting hole 23 passes through the second fixing frame 22, the second reflective layer 212, and the second heat insulation layer 211 in sequence, and the second mounting hole 23 does not interfere with the arrangement of the second heating element 214.

[0044] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A mold heat preservation device, characterized in that, It includes a first heat insulation component (10) detachably disposed on the upper template (100) of the injection mold and a second heat insulation component (20) detachably disposed on the lower template (200) of the injection mold. The first heat insulation component (10) includes a first heat insulation board (11) and a first fixing frame (12). The first heat insulation board (11) includes a first heat insulation layer (111) and a first reflective layer (112). The first heat insulation layer (111) has a first heat insulation cavity (113) that can cover the outer surface of the upper template (100). A first heating element (114) is embedded in the first heat insulation layer (111). The first heating element (114) is used to heat and maintain the temperature of the upper template (100). The first reflective layer (112) covers the outer surface of the first heat insulation layer (111). The first fixing frame (12) has a first cavity (121) that can accommodate the first heat insulation board (11). The second insulation component (20) includes a second insulation board (21) and a second fixing frame (22). The second insulation board (21) includes a second heat insulation layer (211) and a second reflective layer (212). The second heat insulation layer (211) has a second heat insulation cavity (213) that can cover the outer surface of the lower template (200). A second heating element (214) is embedded in the second heat insulation layer (211). The second heating element (214) is used to heat and maintain the temperature of the lower template (200). The second reflective layer (212) covers the outer surface of the second heat insulation layer (211). The second fixing frame (22) has a second cavity (221) that can accommodate the second insulation board (21).

2. The mold insulation device as described in claim 1, characterized in that, The first heat insulation layer (111) and the second heat insulation layer (211) are both made of EPP.

3. The mold insulation device as described in claim 1, characterized in that, The first reflective layer (112) and the second reflective layer (212) are both made of aluminum foil.

4. The mold insulation device as described in claim 1, characterized in that, Both the first heating element (114) and the second heating element (214) are flexible heating elements.

5. The mold insulation device as described in claim 1, characterized in that, The inner surface of the first heat insulation layer (111) is embedded with a first temperature sensor (115), which is used to monitor the temperature of the upper template (100); the inner surface of the second heat insulation layer (211) is embedded with a second temperature sensor (215), which is used to monitor the temperature of the lower template (200).

6. The mold insulation device as described in claim 1, characterized in that, The first heat insulation layer (111) is bonded to the first reflective layer (112), and the second heat insulation layer (211) is bonded to the second reflective layer (212).

7. The mold insulation device as described in claim 1, characterized in that, The first insulation board (11) is fixedly connected to the first fixing frame (12) by fasteners, and the second insulation board (21) is fixedly connected to the second fixing frame (22) by fasteners.

8. The mold insulation device as described in claim 7, characterized in that, The first heat insulation layer (111) is embedded with a first fixing block (116), and the first fixing block (116) has a first mating hole (117) that mates with a fastener. The second heat insulation layer (211) is embedded with a second fixing block (216), and the second fixing block (216) has a second mating hole (217) that mates with a fastener.

9. The mold insulation device as described in claim 8, characterized in that, The first reflective layer (112) has a first through hole (119) through it, and the first through hole (119) and the first mating hole (117) are coaxially arranged; the second reflective layer (212) has a second through hole (219) through it, and the second through hole (219) and the second mating hole (217) are coaxially arranged.

10. The mold insulation device as described in claim 9, characterized in that, The first fixing frame (12) has a first fixing hole (122) through it, and the first fixing hole (122) and the first connecting hole (119) are coaxially arranged; the second fixing frame (22) has a second fixing hole (222) through it, and the second fixing hole (222) and the second connecting hole (219) are coaxially arranged.

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