Refrigerator accessory injection mold and injection molding method

Abstract

The invention discloses a refrigerator accessory injection mold and an injection molding method, and particularly relates to the field of refrigerator accessory injection molding.The refrigerator accessory injection mold comprises a mold assembly installed on a mold machine table, the mold assembly comprises an upper mold, a lower mold is arranged on the outer side of the upper mold, and a mold cavity is formed between the upper mold and the lower mold; the mold cavity is used for injection molding of a drawer plastic part, and a core pulling assembly is arranged on the outer side of the mold cavity; a core block is installed at the output end of the core pulling assembly and used for injection molding of the handle groove, a corner is arranged at the position, close to an opening, of the handle groove, and an exhaust assembly is installed on the core block. According to the mold core pulling device, the effects that most of gas is transversely exhausted towards the outer side and a small part of gas flows into the supporting base are achieved through the flow dividing design at the corner, the gas accumulated at the corner can be exhausted in time, the situation that plastic at the corner of the handle groove expands and protrudes towards the outer side edge to abut against the mold core block is avoided, the mold core block can conduct side core pulling movement, and the mold core pulling efficiency is improved. And the subsequent mold opening is smoothly carried out.

Description

Technical Field

[0001] The invention relates to the technical field of refrigerator accessory injection molding, and more specifically, to a refrigerator accessory injection mold and an injection molding method. Background Art

[0002] There are many kinds of plastic parts for refrigerators, and many of them are manufactured by injection molding, which is an efficient and cost-effective production method suitable for mass production of plastic parts with complex geometries.

[0003] Drawers are plastic accessories of refrigerators, installed in the refrigerator and freezer, and are used to classify and store food. In order to facilitate pushing and pulling, handle grooves are set on the outside of the refrigerator drawers. The greater the depth of the handle grooves, the easier it is to grip. The more complex the shape of the handle grooves, the better the anti-slip property, which can increase the friction between the fingers and make it easy to open the drawer even when the hands are wet. Therefore, in order to improve compatibility, the handle grooves of the refrigerator drawers are designed with large depth and complex shape to ensure that fingers of different sizes and states can use them easily.

[0004] However, during the injection molding process of the above-mentioned drawer plastic parts with deep and complex handle grooves, the handle grooves will be tightly wrapped around the corresponding features of the mold during the cooling process, increasing the difficulty of demolding. For this reason, the prior art uses a lateral core pulling mechanism to process handle grooves with lateral features (such as side holes, grooves, protrusions, etc.), such as using the motion characteristics of the connecting rod assembly to convert the mold opening linear motion into the lateral core pulling motion of the side core, thereby pulling the side core out of the handle groove.

[0005] When the cross-section of the handle groove is L-shaped, the cross-section of the side core is also L-shaped. During the stage of filling the molten plastic and holding pressure, due to the existence of the L-shaped side core, the exhaust at the handle groove is carried out along the L-shaped route. Part of the gas is blocked at the corner and the circulation speed is slowed down. After a period of time, gas will accumulate at the corner of the L-shaped side core. If the accumulated gas cannot be discharged in time, the plastic originally filled at the corner will expand and bulge toward the outer edge under the pressure of the accumulated gas, pressing the side core, making it impossible for the side core to perform lateral core pulling movement, and the subsequent mold opening will damage the drawer plastic parts. Summary of the invention

[0006] The present invention provides a refrigerator accessory injection mold and an injection molding method, and aims to solve the problem that, in the existing refrigerator accessory injection mold, the exhaust at the handle groove is carried out along an L-shaped route, resulting in gas accumulation at the corner of the L-shaped side core, causing the plastic originally filled at the corner to expand and bulge toward the outer edge and press against the side core, making it impossible for the side core to perform lateral core pulling movement.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a refrigerator accessory injection mold, comprising a mold assembly installed on a mold machine, the mold assembly comprising an upper mold, a lower mold is provided on the outer side of the upper mold, a mold cavity is provided between the upper mold and the lower mold, and the mold cavity is used for injection molding of drawer plastic parts, and a core pulling assembly is provided on the outer side of the mold cavity; a core block is installed at the output end of the core pulling assembly, and the core block is used for injection molding of a handle groove, a corner is provided near the opening of the handle groove, an exhaust assembly is installed on the core block, and the exhaust assembly is used to extract gas at the corner; the exhaust assembly comprises a support seat, an air inlet 1 is opened on the support seat, an air inlet pipe 1 is connected to the air inlet 1, and the air inlet end of the air inlet pipe 1 is connected to the corner, and the gas at the corner enters the interior of the support seat through the air inlet 1 and the air inlet pipe 1.

[0008] In a preferred embodiment, an air intake pipe 2 is installed on the core block, and the air intake end of the air intake pipe 2 is perpendicular to the air intake end of the limiting column. A piston plate is slidingly provided inside the air intake pipe 2. When the piston plate slides away from the corner, the gas at the corner enters the interior of the air intake pipe 2.

[0009] In a preferred embodiment, a movable component is installed inside the support seat, and the gas at the corner enters the support seat and drives the piston plate to slide in a direction away from the corner through the movable component.

[0010] In a preferred embodiment, the movable component includes a fixed block, a center column is installed on the fixed block, a movable block is sleeved on the end of the center column away from the fixed block, a movable plate is provided on the end of the movable block away from the fixed block, a connecting rod is slidably installed on the end of the support seat away from the fixed block, one end of the connecting rod is located inside the support seat and is in movably contact with the movable block, and the other end of the connecting rod is fixedly connected to the piston plate, and the gas at the corner enters the air inlet one, so that the movable block moves away from the fixed block and pushes the movable plate to slide, and the movable plate abuts and pushes the piston plate at one end of the installation cavity and slides laterally.

[0011] In a preferred embodiment, a limiting column is installed on the fixed block, the limiting column is located between the fixed block and the movable block, and the limiting column is used to limit the movable block. A limiting plate is installed on the support seat, and the limiting plate is used to limit the connecting rod.

[0012] In a preferred embodiment, a mounting cavity is provided inside the core block, a reset assembly is installed inside the mounting cavity, and the reset assembly is used to reset the movable block and the movable sheet.

[0013] In a preferred embodiment, the reset component includes a hollow seat, the hollow seat is connected to an elastic bag, an extrusion block is provided on the outside of the elastic bag, one end of the hollow seat is connected to a vent pipe, the vent pipe is equipped with air nozzle 1 and air nozzle 2, and the support seat is provided with air inlet 2 and air inlet 3, and air inlet 2 and air inlet 3 are respectively connected to air nozzle 1 and air nozzle 2, the core pulling component includes a linear drive component, the output end of the linear drive component is connected to the drive seat, a push-pull rod is installed at the end of the drive seat away from the linear drive component, and one end of the push-pull rod passes through the interior of the core block, the extrusion block is installed at the end of the push-pull rod located inside the core block, when the linear drive assembly drives the push-pull rod to be retracted through the drive seat, the extrusion block squeezes the air inside the elastic bag, and the air inside the elastic bag is transported to the interior of the support seat through air nozzle 1 and air nozzle 2, so that the movable block and the movable sheet slide and reset.

[0014] In a preferred embodiment, a driving machine is provided on one side of the mold machine, a driver and a molten hopper are installed on the driving machine, an injection molding machine is installed on the output end of the driver, a front panel is installed on the side of the lower mold away from the upper mold, an injection port is opened on the front panel, and the injection port is connected to the mold cavity, the molten material in the molten hopper enters the injection molding machine, and the injection molding machine is pushed by the driver to move toward the fixed mold base, so that the molten material enters the mold cavity through the injection port.

[0015] In a preferred embodiment, a fixed mold base and a movable mold base are installed on the mold machine, the mold assembly is located between the fixed mold base and the movable mold base, an ejection mechanism is installed on the movable mold base, a rear panel is provided on the side of the upper mold away from the lower mold, an ejection hole is opened on the rear panel, and the ejection mechanism ejects the drawer plastic part on the mold cavity through the ejection hole, a guide assembly is installed on the rear panel, and the guide assembly is used to slide and guide the upper mold, a cooling pipe assembly is provided on the outside of the mold cavity, and the cooling pipe assembly is used to cool the mold cavity.

[0016] The present invention also provides an injection molding method for a refrigerator accessory injection mold, which specifically comprises the following steps: S1: The molten material is injected into the mold cavity through the injection molding machine. After cooling, the molten material becomes a drawer plastic part; S2: forming a handle groove on the drawer plastic part through a core block; S3: Exhaust the air from the corner of the handle groove in time through the exhaust assembly; S4: First, the core block is pulled out through the core pulling assembly, and then the mold assembly is opened through the movable mold seat, and the drawer plastic part is removed to complete the injection molding process.

[0017] The beneficial effects of the present invention are: The present invention implements a diversion design at the corner so that most of the gas is discharged laterally to the outside and a small part of the gas flows into the inside of the support seat. The gas accumulated at the corner can be discharged in time to avoid the plastic at the corner of the handle groove expanding and bulging toward the outer edge to press the core block, so that the core block can perform lateral core pulling movement, and subsequent mold opening can proceed smoothly.

[0018] The present invention increases the flow diversion by arranging the second air intake pipe. When the support seat is subjected to a larger flow diversion, the second air intake pipe can be started to perform a secondary flow diversion. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the mold machine structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the mold assembly structure of the present invention.

[0022] Figure 4 It is a schematic diagram of the rear panel structure of the present invention.

[0023] Figure 5 It is a schematic diagram of the mold cavity structure of the present invention.

[0024] Figure 6 It is a schematic diagram of the drawer plastic structure of the present invention.

[0025] Figure 7 It is a schematic structural diagram of the core pulling assembly of the present invention.

[0026] Figure 8 It is a working schematic diagram of the core pulling assembly of the present invention.

[0027] Fig. 9 For the present invention Figure 7 A schematic diagram of the enlarged structure of .

[0028] Fig.10 For the present invention Figure 8 Enlarged schematic diagram of the structure at B.

[0029] Fig.11 It is a schematic diagram of the cross-sectional structure of the exhaust component of the present invention.

[0030] Fig.12 It is a schematic diagram of the cross-sectional structure of the reset component of the present invention.

[0031] Fig.13 It is a schematic diagram of the method flow of the present invention.

[0032] The accompanying drawings are marked as follows: 1, mold machine; 11, fixed mold base; 12, movable mold base; 13, ejector mechanism; 2, drive machine; 21, driver; 22, melt hopper; 23, injection molding machine; 3, mold assembly; 31, upper mold; 311, mold cavity; 312, cooling pipe assembly; 32, lower mold; 33, core pulling assembly; 331, linear drive assembly; 332, drive base; 333, push-pull rod; 34, front panel; 341, injection port; 35, rear panel; 351, ejector hole; 352, guide assembly; 36, core block; 361, installation cavity; 37, exhaust assembly; 3 71. Support seat; 3711. Air inlet one; 3712. Air inlet pipe one; 3713. Air inlet two; 3714. Air inlet three; 3715. Limiting plate; 372. Fixed block; 3721. Limiting column; 373. Center column; 374. Movable block; 375. Movable plate; 376. Connecting rod; 3761. Piston plate; 38. Reset assembly; 381. Hollow seat; 382. Elastic bag; 383. Extrusion block; 384. Ventilation pipe; 385. Air nozzle one; 386. Air nozzle two; 39. Air inlet pipe two; 4. Drawer plastic parts; 41. Handle groove; 42. Corner. DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0034] Refer to the instruction manual Figures 1 to 11 A refrigerator accessory injection mold includes a mold assembly 3 installed on a mold machine 1, the mold assembly 3 includes an upper mold 31, a lower mold 32 is arranged on the outer side of the upper mold 31, a mold cavity 311 is arranged between the upper mold 31 and the lower mold 32, and the mold cavity 311 is used for injection molding of a drawer plastic part 4, and a core pull assembly 33 is arranged on the outer side of the mold cavity 311; a core block 36 is installed at the output end of the core pull assembly 33, and the core block 36 is used for injection molding of a handle groove 41, and the handle groove 41 is close to the opening A corner 42 is provided at the core block 36, and an exhaust assembly 37 is installed on the core block 36, and the exhaust assembly 37 is used to extract the gas at the corner 42; the exhaust assembly 37 includes a support seat 371, and the support seat 371 is provided with an air inlet 3711, and the air inlet 3711 is connected to an air inlet pipe 3712, and the air inlet end of the air inlet pipe 3712 is connected to the corner 42, and the gas at the corner 42 enters the interior of the support seat 371 through the air inlet 3711 and the air inlet pipe 3712.

[0035] It should be noted that the drawer plastic part 4 has a handle groove 41, the cross-section of the handle groove 41 is L-shaped, and the angle is a corner 42. The exhaust direction of the handle groove 41 first flows vertically toward the corner 42, and then is discharged horizontally to the outside. A one-way valve or a one-way channel structure is provided at one end of the air inlet pipe 3712 connected to the air inlet port 3711, and the gas inside the support seat 371 cannot flow into the inside of the air inlet pipe 3712.

[0036] In this embodiment, the implementation scenario is specifically as follows: since the exhaust direction of the handle groove 41 first flows vertically toward the corner 42, the gas flow rate is slowed down by being blocked at the right angle, and the high-speed gas in front continues to flow toward the corner 42, resulting in gas accumulation at the corner 42. By setting a support seat 371, an air inlet 3711 is opened at the position of the support seat 371 corresponding to the corner 42, and an air inlet pipe 3712 is added, so that the air inlet 3711 is extended and connected to the corner 42, and part of the gas at the corner 42 directly enters the support seat 371 through the air inlet pipe 3712 and the air inlet 3711. 71, thereby relieving the gas accumulation pressure at the corner 42. In order to prevent all or most of the gas from entering the support seat 371, the air inlet pipe 3712 is designed to be curved to increase resistance. The overall diversion design is performed at the corner 42, so that most of the gas is discharged laterally to the outside, and a small part of the gas flows into the support seat 371. The gas accumulated at the corner 42 can be discharged in time, and the plastic at the corner 42 of the handle groove 41 is prevented from expanding and bulging toward the outer edge and pressing the core block 36, so that the core block 36 can perform lateral core pulling movement, and the subsequent mold opening can proceed smoothly.

[0037] Refer to the instruction manual Figures 7 to 11 An air intake pipe 39 is installed on the core block 36, and the air intake end of the air intake pipe 39 is perpendicular to the air intake end of the limiting column 3721. A piston plate 3761 is slidingly provided inside the air intake pipe 39. When the piston plate 3761 slides in a direction away from the corner 42, the gas at the corner 42 enters the interior of the air intake pipe 39.

[0038] It should be noted that the second air intake pipe 39 serves to increase the flow diversion. When the support seat 371 is subjected to a larger flow diversion, the second air intake pipe 39 can be activated to perform a secondary flow diversion.

[0039] Furthermore, a movable component is installed inside the support seat 371 , and the gas at the corner 42 enters the support seat 371 , and drives the piston plate 3761 to slide in a direction away from the corner 42 through the movable component.

[0040] It should be noted that the piston plate 3761 is slidably arranged inside the second intake pipe 39. When the piston plate 3761 is in the original position, the second intake pipe 39 can be closed. After the piston plate 3761 slides in the direction away from the corner 42, the second intake pipe 39 can be opened to divert and cache the gas at the corner 42.

[0041] Furthermore, the movable component includes a fixed block 372, on which a center column 373 is installed, and a movable block 374 is sleeved on one end of the center column 373 away from the fixed block 372, and a movable sheet 375 is provided on the other end of the movable block 374 away from the fixed block 372, and a connecting rod 376 is slidably installed on the end of the support seat 371 away from the fixed block 372, and one end of the connecting rod 376 located inside the support seat 371 is in movable contact with the movable block 374, and the other end of the connecting rod 376 is fixedly connected to the piston sheet 3761, and the gas at the corner 42 enters the air inlet 3711, so that the movable block 374 is away from the fixed block 372 and pushes the movable sheet 375 to slide, and the movable sheet 375 abuts against and pushes the piston sheet 3761 at one end of the mounting cavity 361 and to slide laterally.

[0042] It should be noted that piston pads are provided on the opposite sides of the fixed block 372 and the movable block 374, and a piston cavity is formed between the fixed block 372 and the movable block 374. The gas from the air inlet 3711 enters the piston cavity. Since the fixed block 372 is fixedly installed, the air pressure in the piston cavity increases, causing the movable block 374 to slide away from the fixed block 372. When the support seat 371 is subjected to a larger diversion, the movable block 374 abuts against the movable sheet 375 and pushes it to slide, and drives the piston sheet 3761 to move away from the corner 42 through the connecting rod 376, thereby opening the air inlet pipe 39 for diversion. When the movable block 374 slides, the center column 373 plays a guiding role.

[0043] Furthermore, a limiting column 3721 is installed on the fixed block 372, the limiting column 3721 is located between the fixed block 372 and the movable block 374, and the limiting column 3721 is used to limit the movable block 374, and a limiting plate 3715 is installed on the support seat 371, and the limiting plate 3715 is used to limit the connecting rod 376.

[0044] It should be noted that, under the limitation of the limiting column 3721, it can be ensured that when the piston cavity is at the minimum volume, the air inlet 3711 can deliver gas to the piston cavity, thereby activating the movement of the movable block 374.

[0045] Refer to the instruction manual Fig.11 and Fig.12 The core block 36 has an installation cavity 361 formed inside, and a reset assembly 38 is installed inside the installation cavity 361 . The reset assembly 38 is used to reset the movable block 374 and the movable sheet 375 .

[0046] It should be noted that after the mold is opened, the movable block 374 and the movable sheet 375 need to be reset so that they can play a role in the next injection molding process.

[0047] Further, the reset assembly 38 includes a hollow seat 381, the hollow seat 381 is connected to an elastic bag 382, ​​the outer side of the elastic bag 382 is provided with an extrusion block 383, one end of the hollow seat 381 is connected to a vent pipe 384, the vent pipe 384 is installed with a gas nozzle 1 385 and a gas nozzle 2 386, the support seat 371 is provided with an air inlet 2 3713 and an air inlet 3714, and the air inlet 2 3713 and the air inlet 3 3714 are respectively connected to the gas nozzle 1 385 and the gas nozzle 2 386, the core pulling assembly 33 includes a linear drive assembly 331, the output end of the linear drive assembly 331 is connected to It is connected to a drive seat 332, and a push-pull rod 333 is installed at one end of the drive seat 332 away from the linear drive component 331, and one end of the push-pull rod 333 passes through the interior of the core block 36. The extrusion block 383 is installed at one end of the push-pull rod 333 located inside the core block 36. When the linear drive component 331 drives the push-pull rod 333 to be retracted through the drive seat 332, the extrusion block 383 squeezes the air inside the elastic bag 382, ​​and the air inside the elastic bag 382 is transported to the interior of the support seat 371 through the air nozzle 1 385 and the air nozzle 2 386, so that the movable block 374 and the movable sheet 375 slide and reset.

[0048] It should be noted that when the linear drive component 331 pulls the push-pull rod 333 through the drive seat 332, the push-pull rod 333 first squeezes the elastic bag 382, ​​squeezes the air inside it into the vent pipe 384, and then passes the gas into the space between the movable block 374 and the movable sheet 375 through the air nozzle 1 385, and passes the gas into the space between the movable sheet 375 and the inner wall of one end of the support seat 371 through the air nozzle 2 386, so that the movable block 374 and the movable sheet 375 slide and reset until the limiting column 3721 and the limiting sheet 3715 achieve the limiting effect, and the reset operation is completed. The gas inside the elastic bag 382 is replenished by the above-mentioned gas reverse flow. When the extrusion block 383 contacts the end of the installation cavity 361, the push-pull rod 333 can drive the core block 36 to perform the core pulling operation.

[0049] Furthermore, a driving machine 2 is provided on one side of the mold machine 1, and a driver 21 and a molten hopper 22 are installed on the driving machine 2. An injection molding machine 23 is installed on the output end of the driver 21. A front panel 34 is installed on the side of the lower mold 32 away from the upper mold 31. An injection port 341 is opened on the front panel 34, and the injection port 341 is connected to the mold cavity 311. The molten material in the molten hopper 22 enters the injection molding machine 23, and the driver 21 pushes the injection molding machine 23 to move toward the fixed mold base 11, so that the molten material enters the mold cavity 311 through the injection port 341.

[0050] It should be noted that the operation of the driver 21, the melting hopper 22 and the injection molding machine 23 is well known to those skilled in the art.

[0051] Furthermore, a fixed mold base 11 and a movable mold base 12 are installed on the mold machine 1, the mold assembly 3 is located between the fixed mold base 11 and the movable mold base 12, an ejection mechanism 13 is installed on the movable mold base 12, a rear panel 35 is provided on the side of the upper mold 31 away from the lower mold 32, an ejection hole 351 is opened on the rear panel 35, the ejection mechanism 13 ejects the drawer plastic part 4 on the mold cavity 311 through the ejection hole 351, a guide assembly 352 is installed on the rear panel 35, and the guide assembly 352 is used to slide and guide the upper mold 31, a cooling pipe assembly 312 is provided on the outside of the mold cavity 311, and the cooling pipe assembly 312 is used to cool the mold cavity 311.

[0052] It should be noted that the operations of the ejection mechanism 13 and the cooling tube assembly 312 are well known to those skilled in the art.

[0053] Working principle: The molten material is injected into the mold assembly 3 to form the drawer plastic part 4 .

[0054] Part of the gas at the corner 42 directly enters the interior of the support seat 371 through the air inlet pipe 3712 and the air inlet port 3711, thereby alleviating the gas accumulation pressure at the corner 42.

[0055] The second air intake pipe 39 serves to increase the flow diversion. When the support seat 371 is subjected to a larger flow diversion, the second air intake pipe 39 can be activated to perform a secondary flow diversion.

[0056] When the mold is opened, the movable block 374 and the movable sheet 375 are reset by the reset assembly 38 .

[0057] Refer to the instruction manual Fig.13 The present invention also provides an injection molding method for a refrigerator accessory injection mold, which specifically comprises the following steps: S1: injecting molten material into the mold cavity 311 through the injection molding machine 23, and after cooling, the molten material becomes the drawer plastic part 4; S2: forming a handle groove 41 on the drawer plastic part 4 by using the core block 36; S3: timely exhaust the air at the corner 42 of the handle groove 41 through the exhaust assembly 37; S4: firstly, the core block 36 is pulled out through the core pulling assembly 33, and then the mold assembly 3 is opened through the movable mold base 12, and the drawer plastic part 4 is removed to complete the injection molding process.

[0058] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A refrigerator parts injection mold, characterized in that: The invention comprises a mold assembly (3) installed on a mold machine (1), the mold assembly (3) comprising an upper mold (31), a lower mold (32) being provided on the outer side of the upper mold (31), a mold cavity (311) being provided between the upper mold (31) and the lower mold (32), and the mold cavity (311) being used for injection molding of a drawer plastic part (4), and a core pulling assembly (33) being provided on the outer side of the mold cavity (311); A core block (36) is installed at the output end of the core pulling assembly (33), and the core block (36) is used for injection molding of the handle groove (41). The handle groove (41) is provided with a corner (42) near the opening. An exhaust assembly (37) is installed on the core block (36), and the exhaust assembly (37) is used to extract gas at the corner (42); The exhaust assembly (37) comprises a support seat (371), an air inlet port 1 (3711) is provided on the support seat (371), the air inlet port 1 (3711) is connected to an air inlet pipe 1 (3712), and the air inlet end of the air inlet pipe 1 (3712) is connected to the corner (42), and the gas at the corner (42) enters the interior of the support seat (371) through the air inlet port 1 (3711) and the air inlet pipe 1 (3712).

2. The refrigerator parts injection mold according to claim 1, characterized in that: The core block (36) is provided with an air intake pipe (39), and the air intake end of the air intake pipe (39) is perpendicular to the air intake end of the limiting column (3721). A piston plate (3761) is provided inside the air intake pipe (39) for sliding. When the piston plate (3761) slides in a direction away from the corner (42), the gas at the corner (42) enters the interior of the air intake pipe (39).

3. The refrigerator parts injection mold according to claim 2, characterized in that: A movable component is installed inside the support seat (371), and the gas at the corner (42) enters the support seat (371), and drives the piston plate (3761) to slide in a direction away from the corner (42) through the movable component.

4. The refrigerator parts injection mold according to claim 3, characterized in that: The movable assembly comprises a fixed block (372), a central column (373) being mounted on the fixed block (372), a movable block (374) being sleeved on one end of the central column (373) away from the fixed block (372), a movable sheet (375) being disposed on one end of the movable block (374) away from the fixed block (372), a connecting rod (376) being slidably mounted on one end of the support seat (371) away from the fixed block (372), one end of the connecting rod (376) being located inside the support seat (371) being in movable contact with the movable block (374), and the other end of the connecting rod (376) being fixedly connected to a piston sheet (3761), gas at the corner (42) entering the first air inlet (3711), causing the movable block (374) to move away from the fixed block (372) and pushing the movable sheet (375) to slide, and the movable sheet (375) abuts against and pushes the mounting cavity (361) and the piston sheet (3761) at one end thereof to slide laterally.

5. The refrigerator parts injection mold according to claim 4, characterized in that: A limiting column (3721) is installed on the fixed block (372), the limiting column (3721) is located between the fixed block (372) and the movable block (374), and the limiting column (3721) is used to limit the movable block (374), and a limiting plate (3715) is installed on the support seat (371), and the limiting plate (3715) is used to limit the connecting rod (376).

6. The refrigerator accessory injection mold according to claim 5, characterized in that: An installation cavity (361) is provided inside the core block (36), a reset component (38) is installed inside the installation cavity (361), and the reset component (38) is used to reset the movable block (374) and the movable sheet (375).

7. The refrigerator accessory injection mold according to claim 6, characterized in that: The reset assembly (38) comprises a hollow seat (381), the hollow seat (381) is connected to an elastic bag (382), an outer side of the elastic bag (382) is provided with an extrusion block (383), one end of the hollow seat (381) is connected to a vent pipe (384), an air nozzle 1 (385) and an air nozzle 2 (386) are installed on the vent pipe (384), an air inlet 2 (3713) and an air inlet 3 (3714) are provided on the support seat (371), and the air inlet 2 (3713) and the air inlet 3 (3714) are respectively connected to the air nozzle 1 (385) and the air nozzle 2 (386), the core pulling assembly (33) comprises a linear drive assembly (331), the output of the linear drive assembly (331) The output end is connected to a driving seat (332), an end of the driving seat (332) away from the linear driving assembly (331) is equipped with a push-pull rod (333), and one end of the push-pull rod (333) passes through the interior of the core block (36), and the extrusion block (383) is installed at one end of the push-pull rod (333) located inside the core block (36). When the linear driving assembly (331) drives the push-pull rod (333) to be retracted through the driving seat (332), the extrusion block (383) squeezes the air inside the elastic bag (382), and the air inside the elastic bag (382) is transported to the interior of the support seat (371) through the air nozzle 1 (385) and the air nozzle 2 (386), so that the movable block (374) and the movable sheet (375) slide and reset.

8. The refrigerator parts injection mold according to claim 7, characterized in that: A driving machine (2) is provided on one side of the mold machine (1), a driver (21) and a molten material hopper (22) are installed on the driving machine (2), an injection molding machine (23) is installed on the output end of the driver (21), a front panel (34) is installed on the side of the lower mold (32) away from the upper mold (31), an injection port (341) is provided on the front panel (34), and the injection port (341) is communicated with the mold cavity (311), the molten material in the molten material hopper (22) enters the injection molding machine (23), and the driver (21) pushes the injection molding machine (23) to move in a direction close to the fixed mold base (11), so that the molten material enters the mold cavity (311) through the injection port (341).

9. The refrigerator accessory injection mold according to claim 8, characterized in that: The mold machine (1) is provided with a fixed mold base (11) and a movable mold base (12); the mold assembly (3) is located between the fixed mold base (11) and the movable mold base (12); an ejection mechanism (13) is provided on the movable mold base (12); a rear panel (35) is provided on a side of the upper mold (31) away from the lower mold (32); an ejection hole (351) is provided on the rear panel (35); the ejection mechanism (13) ejects the drawer plastic part (4) on the mold cavity (311) through the ejection hole (351); a guide assembly (352) is provided on the rear panel (35); and the guide assembly (352) is used for slidingly guiding the upper mold (31); a cooling pipe assembly (312) is provided on the outside of the mold cavity (311); and the cooling pipe assembly (312) is used for cooling the mold cavity (311).

10. An injection molding method for a refrigerator accessory injection mold, characterized in that: The specific steps include: S1: injecting molten material into the mold cavity (311) through an injection molding machine (23); after cooling, the molten material becomes a drawer plastic part (4); S2: forming a handle groove (41) on the drawer plastic part (4) by using a core block (36); S3: timely exhausting the air at the corner (42) of the handle groove (41) through the exhaust assembly (37); S4: firstly, the core block (36) is pulled out by the core pulling assembly (33), and then the mold assembly (3) is opened by the movable mold base (12), and the drawer plastic part (4) is removed to complete the injection molding process.

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