Refrigerator drawer handle injection mold with rotatable core-pulling insert

Abstract

The utility model provides a refrigerator drawer handle injection mold with a rotatable core-pulling insert, and belongs to the field of injection molding. The mold comprises a movable mold plate, a drawer body mold core is further arranged on the movable mold plate, a drawer end forming block is arranged on the side edge of the drawer body mold core, a drawer handle mold core is arranged below the drawer end forming block, and a forming cavity is formed among the drawer body mold core, the drawer end forming block and the drawer handle mold core. The drawer handle mold core is rotationally connected with the drawer end forming block, a plastic part cannot be partially demolded in a traditional straight ejection mode, compared with other core pulling modes, the drawer handle mold core is more convenient to rotate and higher in fineness, and movement matching of more mold parts is not needed during mold closing and mold stripping, so that the mold opening efficiency is improved, and the mold opening cost is reduced. And the working efficiency and the product qualification rate are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to injection molding field especially relates to a rotatable core-pulling insert refrigerator drawer handle injection mold. BACKGROUND

[0002] At present, injection mold is a tool for producing plastic products, and is also a tool for giving plastic products complete structure and accurate size. Injection molding is a processing method used when mass producing some parts with complex shapes. Specifically, it refers to the process of injecting molten plastic into a mold cavity at high pressure by an injection molding machine, and then obtaining a shaped product after cooling and solidification. In the prior art, in some injection products that need to be rotated and cored (such as products with threaded holes, curved surfaces, or concave-convex surfaces), the core needs to be pulled out first before the mold can be opened smoothly. The core pulling and mold opening are performed in sequence, and the injection cycle is long. Currently, an oil pressure motor is generally used to directly drive the rotation of the core, which results in low mold working efficiency and increased cost.

[0003] For example, a utility model patent of China discloses a rotating mold core-pulling structure [application number CN202323253845.5], which comprises a mold frame, a lower mold block, and an upper mold block. The top of the mold frame is connected with the lower mold block, the top of the lower mold block is connected with the upper mold block, the inside of the upper mold block is provided with a core-pulling gear, the bottom of the core-pulling gear is connected with a rotating mold core, a guide groove is formed in the inside of the upper mold block at one side of the core-pulling gear, and the inside of the guide groove is movably connected with a rack of a core-pulling assembly. The top of the upper mold block is connected with a top fixed plate through a connecting rod, and the top of the top fixed plate is provided with an injection port at the center position. The lower part of the lower mold block is provided with an ejection plate, and the ejection plate is movably installed in the inside of the mold frame. The utility model can drive the core-pulling gear to rotate in the upper mold block directly through the oil cylinder driven by the oil cylinder fixed plate end, and cooperate with the assembled rotating mold core. However, the mold needs to be opened first before the core can be smoothly opened. The core pulling and mold opening are performed in sequence, and the injection cycle is long. Currently, an oil pressure motor is generally used to directly drive the rotation of the core, which results in low mold working efficiency and increased cost. UTILITY MODEL CONTENTS

[0004] The utility model aims at the above problems, and provides a rotatable core-pulling insert refrigerator drawer handle injection mold.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A rotatable core-pulling insert refrigerator drawer handle injection mold, comprising a movable mold plate, wherein the movable mold plate is further provided with a drawer body core, the side of the drawer body core is provided with a drawer end forming block, the lower part of the drawer end forming block is provided with a drawer handle core, a forming cavity is formed between the drawer body core, the drawer end forming block, and the drawer handle core, and the drawer handle core is rotationally connected with the drawer end forming block.

[0007] In the rotatable core ice box drawer handle injection mold, the drawer end forming block is provided with a placing cavity, the drawer handle core rotates in the placing cavity, the drawer handle core is used for forming part extending out of the drawer end forming block, and the placing cavity is further provided with a locking structure connected with the drawer handle core.

[0008] In the rotatable core ice box drawer handle injection mold, the locking structure comprises a locking block in sliding cooperation with the placing cavity, the locking block abuts against the drawer handle core, and the outer surfaces of the locking block and the drawer handle core abutting against each other are in plane shape.

[0009] In the rotatable core ice box drawer handle injection mold, the drawer end forming block is provided with a rotating driving groove, the rotating driving groove is in arc shape, the drawer handle core is provided with a rotating driving hole, and the rotating driving hole is located at the side of the rotating driving groove.

[0010] In the rotatable core ice box drawer handle injection mold, the part of the drawer handle core extending out of the drawer end forming block is in curved surface shape, the lower part of the part of the drawer handle core extending out of the drawer end forming block has a stepped surface located on the drawer end forming block, the drawer handle core and the lower surface and the side surface of the stepped surface have gaps, and the gaps are part of the forming cavity.

[0011] In the rotatable core ice box drawer handle injection mold, the upper end of the drawer handle core is provided with a positioning stop surface, the positioning stop surface is in plane shape and abuts against the inner wall of the side of the placing cavity.

[0012] In the rotatable core ice box drawer handle injection mold, the drawer body core is fixedly connected with an inclined ejector rod, the inclined ejector rod is in sliding connection with the movable die plate, and the bottom of the inclined ejector rod is provided with a connecting hook groove.

[0013] In the rotatable core ice box drawer handle injection mold, the movable die plate is provided with a sliding groove for sliding of the inclined ejector rod, the two sides of the sliding groove are provided with positioning blocks protruding on the movable die plate, and the bottom of the drawer body core is provided with a positioning groove corresponding to the positioning blocks.

[0014] In the rotatable core ice box drawer handle injection mold, the drawer end forming block is provided with a plurality of cooling holes.

[0015] In the rotatable core ice box drawer handle injection mold, the side of the drawer body core is further provided with a horizontal push rod.

[0016] Compared with the prior art, the utility model has the advantages of

[0017] 1, the traditional straight top mode can not make the plastic part demoulding, and compared with other core-pulling mode, the rotation of drawer handle core is more convenient, and the precision is higher, and when the mould is closed and opened, more mould parts are not needed to move and cooperate, work efficiency and product qualification rate are improved.

[0018] 2, the locking structure is used for clamping the drawer handle core, and the drawer handle core is clamped in the placing cavity, because the injection molding environment is in a high pressure state, the locking structure can prevent the plastic part from being molded failure caused by shaking during injection molding or molding.

[0019] 3, because the gap is part of the forming cavity, therefore, the traditional straight top mode can not make the plastic part demoulding, and compared with other core-pulling mode, the rotation of drawer handle core is more convenient, and the precision is higher, and when the mould is closed and opened, more mould parts are not needed to move and cooperate, work efficiency and product qualification rate are improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the whole schematic diagram of the utility model;

[0021] Figure 2 It is Figure 1 Another schematic diagram of the direction;

[0022] Figure 3 It is Figure 1 Schematic diagram of cross section;

[0023] Figure 4 It is Figure 1 Schematic diagram of hidden drawer body core.

[0024] In the drawing: movable die plate 10, drawer body core 11, drawer end forming block 12, drawer handle core 13, forming cavity 14, placing cavity 15, locking structure 16, locking block 17, driving rotation groove 18, driving rotation hole 19, step surface 20, positioning stop surface 21, inclined ejector pin 22, connecting hook groove 23, sliding groove 24, positioning block 25, cooling hole 26, transverse push rod 27. DETAILED DESCRIPTION

[0025] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0026] The utility model discloses a rotatable core-pulling insert refrigerator drawer handle injection mold, which is combined with Figures 1-4As shown, including the moving die plate 10, the moving die plate 10 is further provided with the drawer body core 11, the side of the drawer body core 11 is provided with the drawer end forming block 12, the lower side of the drawer end forming block 12 is provided with the drawer handle core 13, the drawer body core 11, the drawer end forming block 12 and the drawer handle core 13 form the forming cavity 14, and the drawer handle core 13 is rotationally connected with the drawer end forming block 12.

[0027] In the embodiment, the injection liquid is injected into the forming cavity 14 and cooled to form, after forming, the drawer handle core 13 is first rotated to be disconnected with the plastic part, since the forming part of the drawer handle core 13 is arc-shaped and adheres to the drawer handle core 13, the traditional straight top method cannot demold the part, compared with other core-pulling methods, the rotation of the drawer handle core 13 is more convenient and has higher precision, and more mold parts are not needed to move and cooperate during the mold closing and mold opening, thereby improving the work efficiency and product qualification rate.

[0028] The drawer end forming block 12 is provided with the placing cavity 15, the drawer handle core 13 is rotated in the placing cavity 15, the drawer handle core 13 is used to extend out of the drawer end forming block 12, and the placing cavity 15 is further provided with the locking structure 16 connected with the drawer handle core 13.

[0029] In the embodiment, the locking structure 16 is used to clamp the drawer handle core 13, and the drawer handle core 13 is clamped in the placing cavity 15, since the injection environment is in a high-pressure state, the locking structure 16 can prevent the plastic part from being molded unsuccessfully due to shaking during injection or forming.

[0030] The locking structure 16 comprises the locking block 17 in sliding cooperation with the placing cavity 15, the locking block 17 abuts against the drawer handle core 13, and the outer surfaces of the locking block 17 and the drawer handle core 13 abutting against each other are planar.

[0031] In the embodiment, during mold closing, the locking block 17 abuts against the drawer handle core 13, the planar shape increases the connection tightness between the locking block 17 and the drawer handle core 13, and further ensures that the drawer handle core 13 does not shake during injection molding, in addition, during mold opening, the locking block 17 slides in the placing cavity 15 and away from the drawer handle core 13, so that the drawer handle core 13 has a rotation space, and then the drawer handle core 13 is rotated to be disconnected with the plastic part.

[0032] The drawer end forming block 12 is provided with the rotation driving groove 18, the rotation driving groove 18 is arc-shaped, the drawer handle core 13 is provided with the rotation driving hole 19, and the rotation driving hole 19 is located at the side of the rotation driving groove 18.

[0033] In the embodiment, the drawer handle core 13 is connected with the outside or the rotating driver arranged outside the movable die plate 10, the output shaft of the rotating driver penetrates the driving rotation groove 18 and is connected with the driving rotation hole 19, the shape of the driving rotation groove 18 is the rotation track of the drawer handle core 13, and the starting position of the rotation of the drawer handle core 13 can be specified through the driving rotation groove 18, so that the drawer handle core 13 is prevented from deviating or rotating in a large range.

[0034] The part of the drawer handle core 13 extending out of the drawer end forming block 12 is in a curved surface shape, the lower part of the drawer handle core 13 extending out of the drawer end forming block 12 has a stepped surface 20 located on the drawer end forming block 12, the lower surface and the side surface of the drawer handle core 13 and the stepped surface 20 have gaps, and the gaps are part of the forming cavity 14.

[0035] In the embodiment, since the gaps are part of the forming cavity 14, the conventional straight top method cannot demold the part of the plastic part, compared with other core pulling methods, the rotation of the drawer handle core 13 is more convenient and has higher precision, and more mold part moving cooperation is not needed during the clamping and demolding, so that the working efficiency and the product qualification rate are improved.

[0036] The upper end of the drawer handle core 13 is provided with a positioning stop surface 21, the positioning stop surface 21 is in a planar shape and abuts against the side inner wall of the placing cavity 15.

[0037] In the embodiment, during the clamping, the drawer handle core 13 is connected with the stop surface 21 and the locking block 17 respectively, the drawer handle core 13 can be stably fixed, and the plastic part forming failure caused by shaking of the drawer handle core 13 during the injection molding is further prevented.

[0038] The drawer body core 11 is fixedly connected with an inclined ejector rod 22, the inclined ejector rod 22 is slidably connected with the movable die plate 10, and the bottom of the inclined ejector rod 22 is provided with a connecting hook groove 23.

[0039] In the embodiment, after the drawer handle core 13 is rotated and disconnected with the plastic part, the inclined ejector rod 22 drives the drawer body core 11 to move obliquely upwards, so that the plastic part is disconnected with the drawer end forming block 12.

[0040] The movable die plate 10 is provided with a sliding groove 24 for sliding of the inclined ejector rod 22, the sliding groove 24 has positioning blocks 25 protruding on the movable die plate 10 on the two sides, and the bottom of the drawer body core 11 is provided with positioning grooves corresponding to the positioning blocks 25.

[0041] In the embodiment, the drawer body core 11 is connected with the positioning block 25 when the mold is closed, and can not shake under high-pressure injection molding.

[0042] The drawer end forming block 12 is provided with a plurality of cooling holes 26.

[0043] In the embodiment, the cooling holes 26 pass cooling liquid to accelerate the molding of the plastic part.

[0044] The side of the drawer body core 11 is further provided with a transverse push rod 27.

[0045] In the embodiment, when the inclined ejector rod 22 drives the drawer body core 11 to move obliquely upward, the transverse push rod 27 can push the plastic part under the working of the transverse driver connected therewith, so that the plastic part is disconnected from the drawer body core 11.

[0046] The working principle of the utility model is as follows: when the mold is closed, the locking block 17 abuts against the drawer handle core 13, the connection between the locking block 17 and the drawer handle core 13 is increased in tightness through the planar shape, the drawer handle core 13 is further ensured not to shake during the injection molding process, in addition, during the demolding process, the locking block 17 slides in the placing cavity 15 and moves away from the drawer handle core 13, the drawer handle core 13 is first disconnected from the plastic part through rotation, when the inclined ejector rod 22 drives the drawer body core 11 to move obliquely upward, the transverse push rod 27 can push the plastic part under the working of the transverse driver connected therewith, so that the plastic part is disconnected from the drawer body core 11.

[0047] The specific embodiments described in the present document are merely illustrative of the spirit of the utility model. Those skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the utility model or exceed the range defined by the appended claims.

[0048] Although the movable mold plate 10, the drawer body core 11, the drawer end forming block 12, the drawer handle core 13, the forming cavity 14, the placing cavity 15, the locking structure 16, the locking block 17, the driving rotation groove 18, the driving rotation hole 19, the step surface 20, the positioning stop surface 21, the inclined ejector rod 22, the connecting hook groove 23, the sliding groove 24, the positioning block 25, the cooling hole 26, the transverse push rod 27 and the like are used more frequently in the present document, the use of these terms is merely for the convenience of describing and explaining the essence of the utility model; it is contrary to the spirit of the utility model to interpret them as any kind of additional limitation.

Claims

1. A rotatable core insert refrigerator drawer handle injection mold comprising a movable mold plate (10), characterized in that, The movable mold plate (10) is further provided with a drawer body core (11), the side of the drawer body core (11) is provided with a drawer end forming block (12), the lower portion of the drawer end forming block (12) is provided with a drawer handle core (13), the drawer body core (11), the drawer end forming block (12) and the drawer handle core (13) form a forming cavity (14), and the drawer handle core (13) is rotationally connected with the drawer end forming block (12).

2. The rotatable core insert refrigerator drawer handle injection mold of claim 1, wherein, The drawer end forming block (12) is provided with a placing cavity (15), the drawer handle core (13) is rotationally arranged in the placing cavity (15), the drawer handle core (13) is used for forming a part extending out of the drawer end forming block (12), and the placing cavity (15) is further provided with a locking structure (16) connected with the drawer handle core (13).

3. The rotatable core insert refrigerator drawer handle injection mold of claim 2, wherein, The locking structure (16) comprises a locking block (17) in sliding fit with the placing cavity (15), the locking block (17) abuts against the drawer handle core (13), and the outer surfaces of the locking block (17) and the drawer handle core (13) abutting against each other are in a planar shape.

4. The rotatable core insert refrigerator drawer handle injection mold of claim 2, wherein, The drawer end forming block (12) is provided with a driving rotation groove (18), the driving rotation groove (18) is in a circular arc shape, the drawer handle core (13) is provided with a driving rotation hole (19), and the driving rotation hole (19) is located at the side of the driving rotation groove (18).

5. The rotatable core insert refrigerator drawer handle injection mold of claim 2, wherein, The part of the drawer handle core (13) extending out of the drawer end forming block (12) is in a curved surface shape, the lower portion of the part of the drawer handle core (13) extending out of the drawer end forming block (12) has a stepped surface (20) located on the drawer end forming block (12), the lower surface and the side surface of the drawer handle core (13) and the stepped surface (20) have gaps, and the gaps are part of the forming cavity (14).

6. The rotatable core insert refrigerator drawer handle injection mold of claim 5, wherein, The upper end of the drawer handle core (13) is provided with a positioning stop surface (21), the positioning stop surface (21) is in a planar shape and abuts against the inner wall of the side of the placing cavity (15).

7. The rotatable core insert refrigerator drawer handle injection mold of claim 1, wherein, The drawer body core (11) is fixedly connected with an inclined ejector rod (22), the inclined ejector rod (22) is in sliding connection with the movable mold plate (10), and the bottom of the inclined ejector rod (22) is provided with a connecting hook groove (23).

8. The rotatable core insert refrigerator drawer handle injection mold of claim 7, wherein, The movable mold plate (10) is provided with a sliding groove (24) for sliding of the inclined ejector rod (22), the two sides of the sliding groove (24) have positioning blocks (25) protruding on the movable mold plate (10), and the bottom of the drawer body core (11) is provided with a positioning groove corresponding to the positioning blocks (25).

9. The rotatable core insert refrigerator drawer handle injection mold of claim 1, wherein, The drawer end forming block (12) is provided with a plurality of cooling holes (26).

10. The rotatable core insert refrigerator drawer handle injection mold of claim 1, wherein, The side of the drawer body core (11) is further provided with a transverse push rod (27).

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