CN220555224U - Plastic suction mould for refrigerator door liner - Google Patents

Abstract

The utility model relates to a plastic suction mould of a refrigerator door liner, which comprises: the lower die is provided with a die core on the top surface thereof, an inner cavity is arranged in the lower die, and an adsorption hole which is communicated with the inner cavity and the top surface of the die core is arranged on the die core; the upper die is internally provided with a cooling module, the cooling module comprises a plurality of air nozzles, and the air nozzles are arranged above the die core at intervals; when the inner cavity is vacuumized, the mold core can adsorb the plate of the door liner on the top surface of the mold core through the adsorption hole; the cooling module can spray compressed gas onto the plate of the door liner through the air nozzle, so that the plate of the door liner can be closely attached to the mold core, the surface of the door liner is smooth, the appearance quality of the door liner is improved, the plate of the door liner is rapidly cooled and hardened, and further rapid demolding is realized, and the production efficiency is improved.

Description

Plastic suction mould for refrigerator door liner

Technical Field

The utility model relates to the technical field of refrigeration equipment, in particular to a plastic suction mould for a refrigerator door liner.

Background

The refrigerator door is one of important constituent parts of a refrigerator. Refrigerator doors typically include a door shell, an upper endcap, a lower endcap, and a door liner. Along with the development of technology, the door liner is manufactured by adopting a plastic sucking process gradually.

In the related plastic suction mold of the door liner, the plastic suction mold of the door liner generally comprises an upper mold and a lower mold, a processed material is placed above the lower mold, the upper mold is used for pressing, and then a negative pressure hole of the lower mold generates suction force through vacuumizing, so that the plastic suction molding of the door liner is completed.

At present, the existing plastic suction mold for the door liner has some defects, for example, the processed material is a soft plate heated by equipment, the thickness of the soft plate is uneven, the hot soft plate is attached to the lower mold by tightly pressing the upper mold on the lower mold, the thickness distribution of the plate is uneven easily, and the plate is not smooth at a thin and thick transition area, so that the appearance quality of a product is poor.

Disclosure of Invention

The utility model aims to provide a plastic suction mould for a refrigerator door liner, which is used for optimizing the structure of the plastic suction mould for the refrigerator door liner in the related technology and improving the appearance quality of the door liner.

In order to solve the technical problems, the utility model adopts the following technical scheme:

according to one aspect of the present utility model, there is provided a plastic suction mold for a refrigerator door liner, the plastic suction mold comprising: the lower die is characterized in that a die core is arranged on the top surface of the lower die, a sealed inner cavity is arranged in the lower die, and a plurality of adsorption holes are formed in the die core; one end of the adsorption hole is communicated with the inner cavity, and the other end of the adsorption hole is exposed out of the top surface of the mold core; the upper die is movably arranged above the lower die; the upper die is internally provided with a cooling module, the cooling module comprises a plurality of air nozzles which are arranged at intervals, and the air nozzles are arranged above the die core at intervals and face the die core; when the inner cavity is vacuumized, the mold core can adsorb the plate of the door liner on the top surface of the mold core through the adsorption hole; and when the plate of the door liner is adsorbed on the top surface of the mold core, the cooling module can spray compressed gas onto the plate of the door liner through the air nozzle, so that the plate of the door liner is attached to the mold core, and the plate of the door liner is cooled and hardened.

In some embodiments of the present application, the cooling module includes a gas distribution pipe, one end of the gas distribution pipe is used for connecting a gas source, and a plurality of air nozzles are arranged at intervals at the bottom of the gas distribution pipe.

In some embodiments of the present application, the cooling module further includes an air inlet pipe, and one end of the air inlet pipe extends out of a side wall of the upper mold and is used for connecting with an air source; one end of the air distribution pipe is communicated with the air inlet pipe.

In some embodiments of the present application, a plurality of air distribution pipes are provided, and the plurality of air distribution pipes are arranged in the upper die at intervals in parallel; one end of each air distribution pipe is communicated with the air inlet pipe, and the bottoms of the air distribution pipes are provided with a plurality of air nozzles.

In some embodiments of the present application, the lower die further includes a table frame; the table top frame is circumferentially arranged at the edge of the periphery of the top surface of the mold core, an annular door sealing groove is arranged on one side, close to the center of the mold core, of the table top frame, and an adsorption gap communicated with the inner cavity is formed in the groove wall of the door sealing groove; when the inner cavity is vacuumized, the adsorption gap can suck the plate of the door liner and attach the plate to the inner wall of the door sealing groove.

In some embodiments of the present application, an auxiliary module is disposed in the upper mold, the auxiliary module includes a driving unit and a pressing sheet, an output end of the driving unit is connected with the pressing sheet, and the pressing sheet is annular and is vertically opposite to the door seal groove; the driving unit is used for driving the pressing sheet to extend into the door seal groove so as to press the plate of the door liner into the door seal groove.

In some embodiments of the present application, the auxiliary module further includes a guide rod, the guide rod extends up and down, and the pressing piece is slidably connected to the guide rod; the extending direction of the output shaft of the driving unit is consistent with that of the guide rod, and the driving unit can drive the pressing sheet to move up and down along the guide rod so that the pressing sheet stretches into or withdraws from the door sealing groove.

In some embodiments of the present application, a step surface is provided on the top surface of the table top frame, and a step part is formed on one side of the step surface, which is close to the door seal groove; the step part and the step surface are annular and are circumferentially arranged on the periphery of the door sealing groove; and the position height of the step surface is lower than the position height of the notch of the door sealing groove.

In some embodiments of the present application, a plurality of negative pressure holes are arranged on the bottom surface of the mold core at intervals, and the bottom ends of the negative pressure holes are communicated with the inner cavity; the adsorption hole extends upwards from the top end of the negative pressure hole to the top surface of the mold core.

In some embodiments of the present application, an air extraction pipe is arranged on the outer wall of the lower die, and the inner end of the air extraction pipe extends into the inner cavity and is communicated with the inner cavity; the outer end of the exhaust pipe is exposed out of the lower die and is used for being connected with a vacuum pumping device.

According to another aspect of the present utility model, there is also provided a plastic suction mold for a refrigerator door liner, the plastic suction mold comprising: the lower die is characterized in that a die core is arranged on the top surface of the lower die, a sealed inner cavity is arranged in the lower die, and a plurality of adsorption holes are formed in the die core; one end of the adsorption hole is communicated with the inner cavity, and the other end of the adsorption hole is exposed out of the top surface of the mold core; the periphery of the mold core is provided with door seal grooves circumferentially arranged in a surrounding manner; the upper die is movably arranged above the lower die; the auxiliary module is arranged in the upper die and comprises a driving unit and a pressing sheet, the output end of the driving unit is connected with the pressing sheet, and the pressing sheet is annular and is arranged opposite to the door sealing groove vertically; when the inner cavity is vacuumized, the mold core can adsorb the plate of the door liner on the top surface of the mold core through the adsorption hole; and when the plate of the door liner is adsorbed on the top surface of the mold core, the driving unit can drive the pressing sheet to extend into the door seal groove so as to press the plate of the door liner into the door seal groove.

The embodiment of the utility model has the following advantages and positive effects:

the plastic sucking mould of the refrigerator door liner comprises an upper mould and a lower mould, wherein the top surface of the lower mould is provided with a mould core, an inner cavity and an adsorption hole communicated with the inner cavity are arranged in the lower mould, the inner cavity is vacuumized, and then a plate of the door liner can be adsorbed on the top surface of the mould core through the adsorption hole; simultaneously, be equipped with cooling module in last mould, utilize a plurality of air nozzles of cooling module to spray compressed gas to the different regions of the panel of door inner bag, make the panel of door inner bag can closely attach on the mold core, make the surface of door inner bag level and smooth, improve the outward appearance quality of door inner bag, make the panel of door inner bag harden of can cooling fast simultaneously, and then realize quick demolding, improve production efficiency.

Drawings

Fig. 1 is a schematic structural view of a plastic suction mold for a refrigerator door liner according to an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of fig. 1.

Fig. 3 is an exploded schematic view of fig. 1.

Fig. 4 is a cross-sectional view of the lower mold and the door liner panel of fig. 2.

Fig. 5 is a schematic view of the interior of the lower mold frame and the bottom surface of the mold core of fig. 4.

Fig. 6 is an enlarged schematic view of the area a in fig. 4.

Fig. 7 is a schematic view of a plate material of the door liner of fig. 3.

Fig. 8 is a cross-sectional view of the upper die of fig. 2.

Fig. 9 is a schematic view of a part of the structure of fig. 1.

Fig. 10 is a cross-sectional view of fig. 9.

Fig. 11 is an enlarged schematic view of region B in fig. 10.

Fig. 12 is a schematic view of the auxiliary module of fig. 9.

Fig. 13 is a cross-sectional view of fig. 12.

Fig. 14 is a schematic view of a portion of the structure of fig. 1.

The reference numerals are explained as follows: 1. an upper die; 11. an upper die frame; 12. an auxiliary module; 121. a driving unit; 122. tabletting; 123. a first fixed beam; 124. pressing a frame; 125. a first connecting beam; 126. a second connection beam; 127. a guide rod; 128. a second fixed beam; 13. a cooling module; 131. an air inlet pipe; 132. an air distribution pipe; 133. an air nozzle; 2. a lower die; 20. an inner cavity; 21. a bottom plate; 22. a lower die frame; 221. an exhaust pipe; 23. a mold core; 231. a negative pressure hole; 232. a water conveying channel; 233. a door seal groove; 24. a table top frame; 241. a step surface; 242. a step portion; 3. a sheet material; 31. an effective portion; 32. waste portion.

Detailed Description

Exemplary embodiments that embody features and advantages of the present utility model will be described in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the utility model.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

At present, the existing plastic suction mold of the door liner has some defects, for example, the processed material is a soft plate heated by equipment, the thickness of the soft plate is uneven, the hot soft plate is attached to the lower mold in a mode that the upper mold is pressed against the lower mold, the thickness distribution of the plate is uneven easily, and the plate is not smooth at a thin and thick transition area, so that the appearance quality of a product is poor.

Fig. 1 is a schematic structural view of a plastic suction mold for a refrigerator door liner according to an embodiment of the present utility model. Fig. 2 is a cross-sectional view of fig. 1. Fig. 3 is an exploded schematic view of fig. 1.

Referring to fig. 1 to 3, a plastic suction mold for a refrigerator door liner according to an embodiment of the present utility model mainly includes an upper mold 1 and a lower mold 2 disposed opposite to each other.

The lower die 2 is a main body of the plastic suction die, and the lower die 2 mainly comprises a bottom plate 21, a lower die frame 22 and a die core 23.

The lower die frame 22 has a four-sided annular frame structure, the bottom plate 21 is mounted on the bottom surface of the lower die frame 22, and the mold core 23 is mounted on the top surface of the lower die frame 22. A sealed inner cavity 20 is formed between the lower die frame 22, the bottom plate 21 and the die core 23, namely, the inner cavity 20 is formed inside the lower die 2. The cavity 20 is used for being vacuumized, and a negative pressure environment is formed in the cavity 20, so that the heated plate 3 of the door liner is adsorbed on the top surface of the mold core 23.

In some embodiments, the outer wall of the lower mold frame 22 is provided with an air extraction tube 221, and an inner end of the air extraction tube 221 extends into the inner cavity 20 and is communicated with the inner cavity 20. The outer end of the air suction pipe 221 is exposed to the outer wall of the lower mold frame 22 and is used for connecting with a vacuum apparatus, such as a vacuum molding apparatus. The vacuum pumping device can vacuum the interior of the inner cavity 20 through the air pumping pipe 221, so that a negative pressure environment is formed in the inner cavity 20.

The mold core 23 is a molding body of the door liner, and the shape of the top surface of the mold core 23 is consistent with the shape of the manufactured door liner. The mold core 23 is provided therein with an adsorption hole (not shown) communicating with the inner cavity 20, one end of the adsorption hole communicates with the inner cavity 20, and the other end of the adsorption hole is exposed to the top surface of the mold core 23, i.e., the adsorption block communicates with the inner cavity 20 and the space above the top of the mold core 23. Therefore, when the plate 3 of the door liner heated by the equipment is transported to the top surface of the mold core 23, the inner cavity 20 in the lower mold 2 can be vacuumized by an external vacuuming device, so that the adsorption force can be generated at the adsorption hole, the air between the top surface of the mold core 23 and the plate 3 of the door liner is sucked, and the plate 3 of the soft door liner heated is adsorbed and clung to the top surface of the mold core 23, so that the shape of the manufactured door liner is formed. And then cooling and shaping to form the door liner.

In some embodiments, the suction holes include a plurality of vacuum holes (not shown) with smaller diameters, which can generate suction force, and can prevent the plate 3 of the door liner from forming downward protrusions at the suction holes.

In some embodiments, a plurality of adsorption holes are formed, and the plurality of adsorption holes are densely distributed on the top surface of the mold core 23, so that the plate 3 of the door liner can be more tightly attached to the top surface of the mold core 23. The number and distribution density of the adsorption holes can be adjusted according to the position of the specific local structure of the door liner, and the adsorption holes are not limited herein.

Fig. 4 is a cross-sectional view of the lower die 2 and the plate 3 of the door liner in fig. 2. Fig. 5 is a schematic view of the inside of the lower die frame 22 and the bottom surface of the die core 23 in fig. 4.

Referring to fig. 2 to 5, in some embodiments, the bottom surface of the mold core 23 is concavely provided with an upwardly extending negative pressure hole 231. The negative pressure holes 231 are provided in plurality, and the plurality of negative pressure holes 231 are arranged in one-to-one correspondence with the plurality of adsorption holes. The bottom of the negative pressure hole 231 is communicated with the inner cavity 20, and the top of the negative pressure hole 231 is communicated with the bottom of the adsorption hole. The negative pressure hole 231 is a relatively large-caliber air hole, and the adsorption hole extends upwards from the top end of the negative pressure hole 231 to the top surface of the mold core 23, for example, a plurality of vacuum holes are arranged on the top surface of the negative pressure hole 231 to be communicated with the top surface of the mold core 23. When the external vacuumizing equipment vacuumizes the inner cavity 20, the negative pressure hole 231 can form a negative pressure environment, so that the adsorption hole can generate adsorption force, air between the top surface of the mold core 23 and the plate 3 of the door liner covered on the top surface of the mold core 23 is extracted, and the plate 3 of the heated soft door liner is adsorbed and clung to the top surface of the mold core 23 to form the shape of the manufactured door liner.

In some embodiments, the bottom surface of the mold core 23 is concavely provided with a water transporting channel 232, and the water transporting channel 232 has a curved curve shape. The water channel 232 is used for installing cooling pipes (not shown in the figure), and the cooling pipes can be copper pipes and used for conveying cooling water. When cooling water flows through the cooling pipe, the mold core 23 can be cooled, so that the plate 3 of the door liner attached to the top surface of the mold core 23 is cooled and shaped, and the shape of the door liner is formed.

Fig. 6 is an enlarged schematic view of the area a in fig. 4.

Referring to fig. 2 to 6, in some embodiments, a door sealing groove 233 is concavely formed at a peripheral edge of a top surface of the mold core 23, and the door sealing groove 233 has an annular structure. An adsorption gap (not shown) is formed on the inner wall of the door seal groove 233, and the adsorption gap communicates with the cavity 20. Therefore, when the heated plate 3 of the door liner is adsorbed and clinged to the top surface of the mold core 23, the inner cavity 20 is vacuumized by the external vacuuming device, and then the air in the door seal groove 233 can be pumped through the adsorption gap, so that the plate 3 can be sucked and attached to the inner wall of the door seal groove 233, and the structure of the door seal groove 233 of the door liner is formed.

Fig. 7 is a schematic structural view of the panel 3 of the door liner of fig. 3.

Referring to fig. 2 to 7, in some embodiments, the sheet material 3 of the door liner includes an effective portion 31 of the door liner and a scrap portion 32, and the scrap portion 32 is circumferentially disposed around the effective portion 31. Meanwhile, a table frame 24 is arranged at the peripheral side edge of the top surface of the mold core 23, the table frame 24 is annular and is circumferentially arranged at the peripheral side edge of the top surface of the mold core 23, and the table frame 24 is circumferentially arranged at the periphery of the door seal groove 233, namely, the door seal groove 233 is arranged at one side of the table frame 24 close to the center of the mold core 23. When the sheet 3 of the door liner is overlaid on the top surface of the mold core 23, the table frame 24 may be used to support the peripheral side edges of the sheet 3 of the door liner, i.e., the table frame 24 may be used to support the scrap portion 32 of the door liner. After the plate 3 of the door liner is attached to the top surface of the mold core 23 to form the shape of the door liner, the boundary of the effective part 31 of the door liner can be manually cut, so that the effective part 31 of the door liner and the waste part 32 are separated, the waste part 32 is taken away, and the remaining effective part 31 of the door liner can form a finished product of the door liner.

Referring to fig. 7, in some embodiments, a step surface 241 is provided on the top surface of the mesa frame 24, and a step portion 242 is formed on a side of the step surface 241 near the door seal groove 233. The top surface of the side of the mesa frame 24 close to the door seal groove 233 is flush with the plane in which the notch of the door seal groove 233 is located. The step portion 242 is in a step structure, and the step surface 241 is located on one side of the step portion 242 away from the door seal groove 233, and the height of the step surface 241 is lower than the height of the plane where the notch of the door seal groove 233 is located. The step portion 242 and the step surface 241 are both annular and are each circumferentially arranged on the peripheral side of the door seal groove 233. Accordingly, when the plate 3 of the door liner is attached to the top surface of the mold core 23 to form the shape of the door liner, the scrap portion 32 of the door liner can be supported on the step surface 241. After the plate 3 of the door liner is cooled and shaped, the effective part 31 and the waste part 32 of the liner can be manually cut along the position of the step part 242, so that the effective part 31 and the waste part 32 of the liner are quickly separated, the cutting precision and the cutting efficiency of manual cutting are improved, and further the appearance quality and the processing efficiency of a product are improved.

In some embodiments, the table frame 24 is removably secured at a peripheral edge of the top surface of the mold core 23. It should be noted that, in other embodiments, the table frame 24 may be integrally formed and fixed at the peripheral edge of the top surface of the mold core 23.

Fig. 8 is a cross-sectional view of the upper die 1 of fig. 2.

Referring to fig. 2 to 8, an upper die 1 is movably disposed above a lower die 2. The upper die 1 and the lower die 2 can be separated up and down by a plastic sucking device, and then the heated plate 3 of the door liner is put on the top surface of the die core 23 of the lower die 2.

In some embodiments, the upper die 1 is used to assist the lower die 2 in the suction molding. The upper die 1 mainly includes an upper die frame 11, an auxiliary module 12, and a cooling module 13.

The upper mold frame 11 is a four-sided annular frame body structure, the outline shape of the upper mold frame 11 is consistent with that of the lower mold frame 22, the bottom opening of the upper mold frame 11 is arranged opposite to the mold core 23 of the lower mold 2. In other embodiments, the upper mold frame 11 and the lower mold frame 22 may have other polygonal annular frame structures.

Fig. 9 is a schematic view of a part of the structure of fig. 1. Fig. 10 is a cross-sectional view of fig. 9. Fig. 11 is an enlarged schematic view of region B in fig. 10. Fig. 12 is a schematic diagram of the auxiliary module 12 of fig. 9. Fig. 13 is a cross-sectional view of fig. 12.

Referring to fig. 8 to 13, in some embodiments, an auxiliary module 12 is disposed inside the upper mold frame 11, and the auxiliary module 12 is used to assist in forming the door seal groove 233. The auxiliary module 12 includes a driving unit 121 and a pressing piece 122. The pressing piece 122 has an annular structure, and the annular size of the pressing piece 122 is consistent with the annular size of the door seal groove 233 on the mold core 23. The pressing piece 122 is movably arranged above the door sealing groove 233, that is, the pressing piece 122 is arranged opposite to the door sealing groove 233. The driving unit 121 is fixed inside the upper mold frame 11. The output of the drive unit 121 is connected to a press plate 122. Therefore, the driving unit 121 can drive the pressing piece 122 to approach the door sealing groove 233, and make the bottom end of the pressing piece 122 extend into the door sealing groove 233, so as to press the plate 3 of the door liner into the door sealing groove 233, so that the plate 3 of the door liner can be smoothly sucked and attached to the inner wall of the door sealing groove 233, and the door sealing groove 233 of the door liner is formed.

In some embodiments, the drive unit 121 is a cylinder, the output shaft of which extends downwards. The compression plate 122 is located below the cylinder. The cylinder can extend and retract up and down through the output shaft of the cylinder, so that the pressing piece 122 is driven to move up and down, and the bottom end of the pressing piece 122 extends into or exits from the door seal groove 233.

Referring to fig. 8 to 13, in some embodiments, the auxiliary module 12 further includes a first fixing beam 123, the first fixing beam 123 is disposed to extend in a lateral direction, and two ends of the first fixing beam 123 are respectively fixed on the side walls of the upper mold frame 11. The driving unit 121 is fixed to the first fixing beam 123, and is fixed to the lower side of the first fixing beam 123. Therefore, when the upper and lower frames 11 and 22 are relatively fixed, the driving unit 121 can drive the pressing piece 122 to move up and down so that the bottom end of the pressing piece 122 extends into or exits from the door seal groove 233.

In some embodiments, the auxiliary module 12 further includes a pressing frame 124, where the pressing frame 124 has a four-sided frame structure, and the contour shape of the pressing frame 124 is consistent with the contour shape of the pressing sheet 122 and the door sealing groove 233. The pressing piece 122 is fixed at the bottom of the pressing frame 124, the top end of the pressing piece 122 is connected with the bottom end of the pressing frame 124, and the bottom end of the pressing piece 122 protrudes from the bottom of the pressing frame 124 and extends downwards. An output shaft of the driving unit 121 is connected with the pressing frame 124, and the driving unit 121 can drive the pressing frame 124 to move up and down through the output shaft thereof, so as to drive the pressing sheet 122 to move up and down.

In some embodiments, the auxiliary module 12 further includes a first connection beam 125, where the first connection beam 125 is disposed in a laterally extending manner, and two lateral ends of the first connection beam 125 are respectively fixed on two opposite sides of the press frame 124. The output end of the driving unit 121 is connected to the first connection beam 125. Therefore, the driving unit 121 can drive the first connecting beam 125 and the pressing frame 124 to move up and down through its output shaft, and further drive the pressing piece 122 to move up and down.

In some embodiments, the auxiliary module 12 further includes a second connection beam 126, the second connection beam 126 being disposed in a laterally extending manner, and both lateral ends of the second connection beam 126 being respectively fixed to two opposite sides of the press frame 124. Meanwhile, a guide rod 127 is arranged in the upper die frame 11, and the second connecting beam 126 is slidably sleeved on the guide rod 127, so that the pressing frame 124 and the pressing sheet 122 can be slidably connected on the guide rod 127 through the second connecting beam 126. The guide rod 127 extends vertically in a direction that coincides with the direction of extension of the output shaft of the drive unit 121. Therefore, the driving unit 121 can drive the pressing frame 124 and the pressing piece 122 to move up and down along the guiding rod 127, so that the pressing piece 122 extends into or exits from the door seal groove 233.

In some embodiments, the auxiliary module 12 further includes a second fixing beam 128, the second fixing beam 128 being disposed to extend in a lateral direction, and both ends of the second fixing beam 128 being respectively fixed to the side walls of the upper mold frame 11. The second fixed beam 128 is arranged on the upper side of the second connecting beam 126, the top end of the guide rod 127 is fixed on the second fixed beam 128, the guide rod 127 is arranged by extending downwards from the second fixed beam 128, the bottom end of the guide rod 127 is movably inserted into the second connecting beam 126, and then the guide rod 127 is fixed in the upper die frame 11, so that the pressing sheet 122 can smoothly move up and down along the guide rod 127.

In some embodiments, a plurality of second connecting beams 126 and second fixing beams 128 are provided, and a plurality of second fixing beams 128 are provided above the second connecting beams 126 in a one-to-one correspondence. One or more guide rods 127 are arranged between the second fixing beams 128 and the corresponding second connecting beams 126, the top ends of the one or more guide rods 127 are fixed on the second fixing beams 128, and the bottom ends of the one or more guide rods 127 are movably inserted into the corresponding second connecting beams 126.

Fig. 14 is a schematic view of a portion of the structure of fig. 1.

Referring to fig. 8 to 14, in some embodiments, a cooling module 13 is disposed inside the upper mold frame 11, and the cooling module 13 is used to blow compressed air onto the plate 3 of the door liner, so that the plate 3 of the door liner is tightly adhered to the mold core 23, and the plate 3 of the door liner is quickly cooled and hardened.

In some embodiments, the cooling module 13 includes an air inlet duct 131, an air distribution duct 132, and an air nozzle 133. One end of the air inlet pipe 131 extends out of the upper mold frame 11 and is used for connecting a compressed air source, and the compressed air source can be compressed air at normal temperature. One end of the air distribution pipe 132 communicates with the air intake pipe 131, and the air distribution pipe 132 is arranged above the mold core 23 at intervals. The bottom of the gas distribution pipe 132 is provided with downwardly extending gas nozzles 133, and the gas nozzles 133 are arranged above the mold core 23 at intervals. The air nozzle 133 communicates with the inside of the air distribution pipe 132, and the bottom end opening of the air nozzle 133 is disposed toward the top surface of the mold core 23. Therefore, the compressed gas outside can enter the gas distribution pipe 132 through the gas inlet pipe 131, and then the gas is sprayed towards the top surface of the mold core 23 through the gas nozzle 133, and then the gas is sprayed towards the plate 3 of the door liner adsorbed on the top surface of the mold core 23, so that the plate 3 of the door liner can be tightly attached to the mold core 23, the plate 3 of the door liner is cooled and hardened, the mold is rapidly removed, and the production efficiency is improved.

In some embodiments, a plurality of air nozzles 133 are provided, and the plurality of air nozzles 133 are arranged at intervals at the bottom of the air distribution pipe 132. The air nozzles 133 can spray air towards different areas of the top surface of the mold core 23, so that the plate 3 of the door liner is uniformly attached to the top surface of the mold core 23, the top surface of the door liner is smoother, and the plate 3 of the door liner can be cooled and hardened rapidly.

In some embodiments, the air distribution pipes 132 are provided in plurality, the plurality of air distribution pipes 132 are arranged in the upper mold frame 11 at intervals in parallel, and one ends of the plurality of air distribution pipes 132 are communicated with the air inlet pipe 131. The bottoms of the plurality of gas distribution pipes 132 are respectively provided with a plurality of gas nozzles 133 which are arranged at intervals. Therefore, the injection range of the air nozzles 133 can be increased by the plurality of air distribution pipes 132 in cooperation with the plurality of air nozzles 133. It should be noted that the number and arrangement of the gas distribution pipe 132 and the gas nozzles 133 may be set according to the area of the door liner, which is not limited herein.

It should be noted that, in some embodiments, the air distribution pipe 132 may be integrally formed on the air inlet pipe 131, that is, the air inlet pipe 131 and the air distribution pipe 132 are integrally formed. The air nozzles 133 may also be arranged at intervals at the bottom of the air intake pipe 131.

Based on the technical scheme, the embodiment of the utility model has at least the following advantages and positive effects:

the plastic suction mold for the refrigerator door liner comprises an upper mold 1 and a lower mold 2, wherein a mold core 23 is arranged on the top surface of the lower mold 2, an inner cavity 20 and an adsorption hole communicated with the inner cavity 20 are arranged in the lower mold 2, and the inner cavity 20 is vacuumized, so that a plate 3 of the door liner can be adsorbed on the top surface of the mold core 23 through the adsorption hole; simultaneously, be equipped with cooling module 13 in last mould 1, utilize the air jet 133 of cooling module 13 to the different regions of the panel 3 of door inner bag, make the panel 3 of door inner bag closely attached on mold core 23, make the surface of door inner bag level and smooth, improve the outward appearance quality of door inner bag, make the panel 3 of door inner bag harden by rapid cooling simultaneously, and then realize quick demolding, improve production efficiency.

While the utility model has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present utility model may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (11)

1. A plastic uptake mold for a refrigerator door liner, comprising:

the lower die is characterized in that a die core is arranged on the top surface of the lower die, a sealed inner cavity is arranged in the lower die, and a plurality of adsorption holes are formed in the die core; one end of the adsorption hole is communicated with the inner cavity, and the other end of the adsorption hole is exposed out of the top surface of the mold core;

the upper die is movably arranged above the lower die; the upper die is internally provided with a cooling module, the cooling module comprises a plurality of air nozzles which are arranged at intervals, and the air nozzles are arranged above the die core at intervals and face the die core;

when the inner cavity is vacuumized, the mold core can adsorb the plate of the door liner on the top surface of the mold core through the adsorption hole;

and when the plate of the door liner is adsorbed on the top surface of the mold core, the cooling module can spray compressed gas onto the plate of the door liner through the air nozzle, so that the plate of the door liner is attached to the mold core, and the plate of the door liner is cooled and hardened.

2. The vacuum forming mold for a refrigerator door liner as claimed in claim 1, wherein the cooling module includes a gas distribution pipe having one end for connecting to a gas source, and a plurality of the gas nozzles are arranged at intervals at a bottom of the gas distribution pipe.

3. The vacuum forming mold of the refrigerator door liner according to claim 2, wherein the cooling module further comprises an air inlet pipe, one end of which extends out of the side wall of the upper mold and is used for connecting with an air source; one end of the air distribution pipe is communicated with the air inlet pipe.

4. The plastic suction mold for refrigerator door liner as claimed in claim 3, wherein the air distribution pipe is provided in plurality, and the plurality of air distribution pipes are arranged in the upper mold at a parallel interval;

one end of each air distribution pipe is communicated with the air inlet pipe, and the bottoms of the air distribution pipes are provided with a plurality of air nozzles.

5. The vacuum forming mold for a refrigerator door liner of claim 1, wherein the lower mold further comprises a table top frame; the table top frame is circumferentially arranged at the edge of the periphery of the top surface of the mold core, an annular door sealing groove is arranged on one side, close to the center of the mold core, of the table top frame, and an adsorption gap communicated with the inner cavity is formed in the groove wall of the door sealing groove;

when the inner cavity is vacuumized, the adsorption gap can suck the plate of the door liner and attach the plate to the inner wall of the door sealing groove.

6. The plastic uptake mold of the refrigerator door liner of claim 5, wherein an auxiliary module is arranged in the upper mold, the auxiliary module comprises a driving unit and a pressing sheet, the output end of the driving unit is connected with the pressing sheet, and the pressing sheet is annular and is arranged opposite to the door seal groove from top to bottom;

the driving unit is used for driving the pressing sheet to extend into the door seal groove so as to press the plate of the door liner into the door seal groove.

7. The vacuum forming mold of the refrigerator door liner according to claim 6, wherein the auxiliary module further comprises a guide bar extending up and down, and the pressing piece is slidably connected to the guide bar;

the extending direction of the output shaft of the driving unit is consistent with that of the guide rod, and the driving unit can drive the pressing sheet to move up and down along the guide rod so that the pressing sheet stretches into or withdraws from the door sealing groove.

8. The plastic uptake mold of the refrigerator door liner of claim 5, wherein a step surface is provided on the top surface of the table top frame, and a step part is formed on one side of the step surface, which is close to the door seal groove;

the step part and the step surface are annular and are circumferentially arranged on the periphery of the door sealing groove; and the position height of the step surface is lower than the position height of the notch of the door sealing groove.

9. The vacuum molding die of the refrigerator door liner according to claim 1, wherein a plurality of negative pressure holes are arranged on the bottom surface of the mold core at intervals, and the bottom ends of the negative pressure holes are communicated with the inner cavity;

the adsorption hole extends upwards from the top end of the negative pressure hole to the top surface of the mold core.

10. The plastic suction mold of the refrigerator door liner according to claim 1, wherein an exhaust pipe is arranged on the outer wall of the lower mold, and the inner end of the exhaust pipe extends into the inner cavity and is communicated with the inner cavity; the outer end of the exhaust pipe is exposed out of the lower die and is used for being connected with a vacuum pumping device.

11. A plastic uptake mold for a refrigerator door liner, comprising:

the lower die is characterized in that a die core is arranged on the top surface of the lower die, a sealed inner cavity is arranged in the lower die, and a plurality of adsorption holes are formed in the die core; one end of the adsorption hole is communicated with the inner cavity, and the other end of the adsorption hole is exposed out of the top surface of the mold core; the periphery of the mold core is provided with door seal grooves circumferentially arranged in a surrounding manner;

the upper die is movably arranged above the lower die;

the auxiliary module is arranged in the upper die and comprises a driving unit and a pressing sheet, the output end of the driving unit is connected with the pressing sheet, and the pressing sheet is annular and is arranged opposite to the door sealing groove vertically;

when the inner cavity is vacuumized, the mold core can adsorb the plate of the door liner on the top surface of the mold core through the adsorption hole;

and when the plate of the door liner is adsorbed on the top surface of the mold core, the driving unit can drive the pressing sheet to extend into the door seal groove so as to press the plate of the door liner into the door seal groove.