Rotary core-pulling structure of refrigerator drawer handle mold

Abstract

The utility model provides a rotary core-pulling structure of a refrigerator drawer handle mold, and belongs to the technical field of molds. The technical problem that an existing rotary core-pulling structure is long in demolding waiting time is solved. The refrigerator drawer handle mold comprises a side mold, the rotary core-pulling structure comprises a rotary core-pulling block, a transmission piece and an oil cylinder, a rotating shaft part and a dragging part are arranged on the rotary core-pulling block, the two ends of the rotating shaft part protrude relative to the rotary core-pulling block and are rotationally connected with the side mold, and a cooling water path is arranged in the rotary core-pulling block. One port of the cooling water channel is located at one end of the rotating shaft part, the other port of the cooling water channel is located at the other end of the rotating shaft part, and water pipes are connected to the two ends of the rotating shaft part and extend out of the side mold; the dragging part is eccentrically arranged relative to the rotating shaft part, one side of the transmission part is rotationally connected with the dragging part, the oil cylinder is vertically fixed to the side die, and a piston rod of the oil cylinder is rotationally connected with the other side of the transmission part. The injection mold has the advantage of improving the injection molding production efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a rotary core-pulling structure of a refrigerator drawer handle mold. Background Art

[0002] At present, many refrigerator drawer handles are designed as inverted arc structures, which cannot be core pulled by traditional linear motion. For this type of structure, a rotary core pulling method is generally adopted, such as a drawer rotary core pulling mold [Application No. 202111338416.0] and an injection mold with a rotary core pulling mechanism [Application No. 201410251804.9] disclosed in Chinese patent documents. The current rotary core pulling drive method is relatively complicated, resulting in a complex overall mold structure design and high cost. At the same time, due to the use of a rotary core pulling method, cooling water channels are set in the core pulling block, that is, the plastic part corresponding to the core pulling block cools slowly, resulting in a long demolding waiting time. Utility Model Content

[0003] The purpose of the utility model is to solve the above problems in the existing technology and propose a rotary core-pulling structure for a refrigerator drawer handle. The technical problem solved by the utility model is to set a cooling water channel in the rotary core-pulling block.

[0004] The purpose of this utility model can be achieved through the following technical solutions:

[0005] A rotary core-pulling structure for a refrigerator drawer handle mold, the mold including a side mold, characterized in that the rotary core-pulling structure includes a rotary core-pulling block, a transmission member and an oil cylinder, the rotary core-pulling block is provided with a rotating shaft portion and a dragging portion, the two ends of the rotating shaft portion respectively protrude relative to the rotary core-pulling block and are rotatably connected to the side mold, a cooling water path is provided in the rotary core-pulling block, one port of the cooling water path is located at one end of the rotating shaft portion, the other port of the cooling water path is located at the other end of the rotating shaft portion, the two ends of the rotating shaft portion are respectively connected to water pipes, and the water pipes extend out of the side mold; the dragging portion is eccentrically arranged relative to the rotating shaft portion, one side of the transmission member is rotatably connected to the dragging portion, the oil cylinder is vertically fixed on the side mold, and the piston rod of the oil cylinder is rotatably connected to the other side of the transmission member.

[0006] When in use, the oil cylinder drives the transmission part to move, and the transmission part pulls the drag part to make the rotary core pulling block rotate around the rotating shaft part, thereby realizing the rotary core pulling of the rotary core pulling block. The vertically arranged oil cylinder and transmission part convert the vertical movement into the rotation of the rotary core pulling block, which has a simple structure, a compact structure and a low cost. A cooling water channel is opened in the rotary core pulling block, and the water pipe rotates synchronously with the rotating shaft part. The cooling water flows in the cooling water channel in the rotary core pulling block through the inlet and outlet water of the water pipe. The rotary core pulling block can quickly cool the handle position of the refrigerator drawer, avoiding waiting time, thereby making the rotary core pulling block realize rotary core pulling faster, reducing the demoulding waiting time, and improving the injection molding production efficiency.

[0007] In the aforementioned rotary core-pulling structure for the refrigerator drawer handle mold, the rotary core-pulling block comprises a core-pulling portion and a guide portion located above the core-pulling portion. The guide portion has an arcuate outer surface concentric with the rotating shaft portion. The side mold is provided with a sealing surface that mates with the outer surface of the guide portion. The core-pulling portion is adapted to fit the refrigerator drawer handle. During injection molding, the outer surface of the guide portion mates with the sealing surface of the side mold, providing a seal and guiding the rotary core-pulling portion as it rotates.

[0008] In the above-mentioned rotary core-pulling structure of the refrigerator drawer handle mold, the dragging portion is located directly above the rotating shaft portion.

[0009] In the above-mentioned rotating core-pulling structure of the refrigerator drawer handle mold, a water inlet channel and a water outlet channel are respectively provided at both ends of the rotating shaft portion, a plurality of water channels 1 are provided in the guide portion, a water channel 2 corresponding to each of the water channels 1 is provided in the core-pulling portion, and the corresponding water channels 1 and 2 are connected. A channel 1 is provided at the inner end of the water inlet channel along the radial direction of the rotating shaft portion to connect with the water channel 1 at one end, and a channel 2 is provided at the inner end of the water outlet channel along the radial direction of the rotating shaft portion to connect with the water channel 1 at the other end. A channel 3 is provided in the rotating core-pulling block to connect the adjacent water channels 1 and 2 so that the water inlet channel and the water outlet channel are connected. Cooling water enters from the water inlet channel, enters the water channels 1 and 2 in the guiding portion and the core-pulling portion through channel 1, and connects the plurality of water channels 1 and 2 in series through channel 3, so that the cooling water circulates to channel 2 and then flows out from the water outlet channel, thereby cooling the rotating core-pulling block with the cooling water. The plurality of water channels 1 and 2 can uniformly cool the rotating core-pulling block as a whole.

[0010] In the aforementioned rotary core-pulling structure of the refrigerator drawer handle mold, a positioning surface is provided on the transmission member, and a limiting surface is provided within the side mold. When the rotary core-pulling block is in the injection molding station, the positioning surface and the limiting surface abut against each other. When the rotary core-pulling block is reset, the oil cylinder drives one end of the transmission member, which in turn rotates the rotary core-pulling block. When the positioning surface of the transmission member abuts against the limiting surface of the side mold, the rotary core-pulling block rotates into position, achieving precise reset of the rotary core-pulling block.

[0011] In the above-mentioned rotating core-pulling structure of the refrigerator drawer handle mold, the peripheral surface of the dragging portion is a cylindrical surface, and the transmission member is provided with an inner concave surface matching the cylindrical surface. This structure can adapt to the transmission member rotating relative to the rotating core-pulling block when moving.

[0012] In the above-mentioned rotary core-pulling structure of the refrigerator drawer handle mold, connecting grooves are provided on both sides of the transmission member, the dragging part is rotatably connected to the connecting groove on one side of the transmission member, and a connecting plate is fixedly connected to the piston rod of the oil cylinder, and the connecting plate is rotatably connected to the connecting groove on the other side of the transmission member.

[0013] In the aforementioned rotary core-pulling structure for the refrigerator drawer handle mold, the side mold comprises an inner and outer mold sections, forming a mounting cavity between the two. The rotary core-pulling block and transmission member are positioned within the mounting cavity. The inner mold section has an opening through which the core-pulling portion of the rotary core-pulling block extends. The outer mold section has a mounting opening at the bottom. The oil cylinder is fixed to the bottom of the outer mold section, and its piston rod extends through the mounting opening to connect with the transmission member within the mounting cavity. This structure facilitates subsequent maintenance.

[0014] In the rotary core-pulling structure of the refrigerator drawer handle mold, both ends of the inner and outer modules are provided with alignment notches, which form openings through which the water pipes pass. This structure facilitates subsequent maintenance.

[0015] Compared with the prior art, the rotary core-pulling structure of the refrigerator drawer handle mold has the advantages of simple structure and improved injection molding production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the cross-sectional structure of this mold.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure when the rotary core-pulling structure is installed on the side mold.

[0018] Figure 3 It is a three-dimensional structural diagram of the rotary core-pulling structure.

[0019] Figure 4 It is a cross-sectional structural diagram of a rotary core pulling structure.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating core pulling block.

[0021] Figure 6 It is a schematic diagram of the structure of the cooling water channel inside the rotating core pulling block.

[0022] In the figure, 1. side mold; 11. inner module; 12. outer module; 13. sealing surface; 14. limiting surface; 2. rotating core-pulling block; 21. shaft portion; 22. drag portion; 23. core-pulling portion; 24. guide portion; 3. water pipe; 31. water inlet channel; 32. water outlet channel; 33. water channel 1; 34. water channel 2; 35. channel 1; 36. channel 2; 37. channel 3; 4. transmission part; 41. positioning surface; 5. oil cylinder; 51. connecting plate; 6. upper mold base; 61. lower mold base. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0024] like Figure 1 As shown, the refrigerator drawer handle mold includes an upper mold base 6, a lower mold base 61 and a side mold 1. The side mold 1 is arranged on the lower mold base 61 and can move laterally during demolding. The side mold 1 includes an inner module 11 and an outer module 12. An installation cavity is formed between the inner module 11 and the outer module 12. An opening is provided on the inner module 11, and a mounting port is provided at the bottom of the outer module 12. Alignment notches are provided at both ends of the inner module 11 and the outer module 12, and the notches constitute an opening.

[0025] like Figures 2 to 5 As shown, the rotary core pulling structure includes a rotary core pulling block 2, a transmission member 4 and an oil cylinder 5. The rotary core pulling block 2 includes a core pulling portion 23, a guide portion 24 located on the upper part of the core pulling portion 23, a shaft portion 21 located on the rear side of the core pulling portion 23 and a drag portion 22. The rotary core pulling block 2 and the transmission member 4 are arranged in the installation cavity. The core pulling portion 23 of the rotary core pulling block 2 passes through the opening. The drag portion 22 is eccentrically arranged relative to the shaft portion 21 and is located directly above the shaft portion 21. The guide portion 2 The outer circumference of the outer mold 4 is an arc surface, which is concentric with the rotating shaft portion 21. The side mold 1 is provided with a sealing surface 13 that contacts the outer circumference of the guide portion 24. The two ends of the rotating shaft portion 21 protrude relative to the rotating core pulling block 2 and are rotationally connected to the side mold 1. One side of the transmission member 4 is rotationally connected to the dragging portion 22. The transmission member 4 is provided with a positioning surface 41, and the side mold 1 is provided with a limiting surface 14. When the rotating core pulling block 2 is in the injection molding station, the positioning surface 41 and the limiting surface 14 are in contact. The circumference of the dragging portion 22 is a cylindrical surface, and the transmission member 4 is provided with an inner concave surface that matches the cylindrical surface. The oil cylinder 5 is fixed to the bottom of the outer mold portion 12, and the piston rod of the oil cylinder 5 extends into the installation port and is rotationally connected to the other side of the transmission member 4 in the installation cavity. Specifically, connecting grooves are provided on both sides of the transmission member 4, the dragging part 22 is rotatably connected to the connecting groove on one side of the transmission member 4, and a connecting plate 51 is fixedly connected to the piston rod of the oil cylinder 5, and the connecting plate 51 is rotatably connected to the connecting groove on the other side of the transmission member 4.

[0026] like Figure 6As shown, a cooling water channel is provided in the rotating core-pulling block 2, one end of the cooling water channel is located at one end of the rotating shaft portion 21, and the other end of the cooling water channel is located at the other end of the rotating shaft portion 21. Both ends of the rotating shaft portion 21 are respectively connected to a water pipe 3, and the water pipe 3 extends out of the notch of the side mold 1; an inlet channel 31 and a water outlet channel 32 are respectively provided at both ends of the rotating shaft portion 21, and the water inlet channel 31 and the water outlet channel 32 are respectively connected to the water pipe 3, four sections of water channel 1 33 are provided in the guide portion 24, and four sections of water channel 2 34 are provided in the core-pulling portion 23, and the water channel 1 33 and the water channel 2 34 are connected one to one, and a channel 1 35 connected to the water channel 1 33 located at one end is provided at the inner end portion of the water inlet channel 31 along the radial direction of the rotating shaft portion 21, and the inner end of the water outlet channel 32 A channel 2 36 is provided at the portion along the radial direction of the rotating shaft portion 21 and is connected to the water channel 1 33 at the other end. In this embodiment, three sections of channel 3 37 are provided. The three sections of water channel 1 33 near channel 1 35 are all connected through one section of channel 3 37. The two ends of water channel 2 34 near channel 2 36 in the four sections of water channel 2 34 are connected through one section of channel 3 37, and the other two ends of water channel 2 34 are connected through one section of channel 3 37. The three sections of channel 3 37 realize complete connection between water channel 1 33 and water channel 2 34 and enable the cooling water to flow unidirectionally in water channel 1 33 and water channel 2 34. In this private invention, the processing ports of water channel 1 33, water channel 2 34, channel 1 35, channel 2 36 and channel 3 37 are all blocked and sealed.

[0027] When in use, the oil cylinder 5 drives the transmission member 4 to move, and the transmission member 4 pulls the dragging part 22 to make the rotary core pulling block 2 rotate around the rotating shaft part 21, thereby realizing the rotary core pulling of the rotary core pulling block 2. The vertically arranged oil cylinder 5 and transmission member 4 convert the vertical movement into the rotation of the rotary core pulling block 2; the rotary core pulling block 2 opens a cooling water path, and the water pipe 3 rotates synchronously with the rotating shaft part 21. The cooling water flows in the cooling water path in the rotary core pulling block 2 through the inlet and outlet water of the water pipe 3. The rotary core pulling block 2 can quickly cool the handle position of the refrigerator drawer, avoiding waiting time, thereby making the rotary core pulling block 2 realize rotary core pulling faster, reducing the demoulding waiting time, and improving the injection molding production efficiency.

[0028] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A rotary core-pulling structure for a refrigerator drawer handle mold, the mold comprising a side mold (1), characterized in that: The rotary core pulling structure comprises a rotary core pulling block (2), a transmission member (4) and an oil cylinder (5), wherein the rotary core pulling block (2) is provided with a rotating shaft portion (21) and a drag portion (22), the two ends of the rotating shaft portion (21) respectively protrude relative to the rotary core pulling block (2) and are rotatably connected to the side mold (1), a cooling water channel is provided in the rotary core pulling block (2), one end of the cooling water channel is located at one end of the rotating shaft portion (21), and the other end of the cooling water channel is located at the other end of the rotating shaft portion (21), the two ends of the rotating shaft portion (21) are respectively connected to water pipes (3), and the water pipes (3) extend out of the side mold (1); the drag portion (22) is eccentrically arranged relative to the rotating shaft portion (21), one side of the transmission member (4) is rotatably connected to the drag portion (22), the oil cylinder (5) is vertically fixed on the side mold (1), and the piston rod of the oil cylinder (5) is rotatably connected to the other side of the transmission member (4).

2. The rotary core-pulling structure of the refrigerator drawer handle mold according to claim 1, characterized in that: The rotating core-pulling block (2) comprises a core-pulling portion (23) and a guide portion (24) located above the core-pulling portion (23); the outer peripheral surface of the guide portion (24) is an arc surface, and the arc surface is concentric with the rotating shaft portion (21); and the side mold (1) is provided with a sealing surface (13) that is in contact with the outer peripheral surface of the guide portion (24).

3. The rotary core-pulling structure of the refrigerator drawer handle mold according to claim 1, characterized in that: The dragging portion (22) is located directly above the rotating shaft portion (21).

4. The rotary core-pulling structure of the refrigerator drawer handle mold according to claim 2, characterized in that: The two ends of the rotating shaft portion (21) are respectively provided with a water inlet channel (31) and a water outlet channel (32), the guide portion (24) is provided with a plurality of water channels (33), the core pulling portion (23) is provided with a water channel (34) corresponding to the water channels (33), the corresponding water channels (33) and the water channels (34) are connected, the inner end portion of the water inlet channel (31) is provided with a channel (35) connected to the water channel (33) at one end along the radial direction of the rotating shaft portion (21), the inner end portion of the water outlet channel (32) is provided with a channel (36) connected to the water channel (33) at the other end along the radial direction of the rotating shaft portion (21), and the rotating core pulling block (2) is provided with a channel (37) connected to the adjacent water channels (33) and the adjacent water channels (34) so ​​that the water inlet channel (31) and the water outlet channel (32) are connected.

5. The rotary core-pulling structure of the refrigerator drawer handle mold according to claim 1, 2 or 3, characterized in that: A positioning surface (41) is provided on the transmission member (4), and a limiting surface (14) is provided in the side mold (1). When the rotating core-pulling block (2) is located at the injection molding station, the positioning surface (41) is in contact with the limiting surface (14).

6. The rotary core-pulling structure of the refrigerator drawer handle mold according to claim 1, 2 or 3, characterized in that: The peripheral surface of the dragging portion (22) is a cylindrical surface, and the transmission member (4) is provided with an inner concave surface matching the cylindrical surface.

7. The rotary core-pulling structure of the refrigerator drawer handle mold according to claim 1, 2 or 3, characterized in that: Both sides of the transmission member (4) are provided with connecting grooves, the dragging portion (22) is rotatably connected to the connecting groove on one side of the transmission member (4), and a connecting plate (51) is fixedly connected to the piston rod of the oil cylinder (5), and the connecting plate (51) is rotatably connected to the connecting groove on the other side of the transmission member (4).

8. The rotary core-pulling structure of the refrigerator drawer handle mold according to claim 1, 2 or 3, characterized in that: The side mold (1) includes an inner module (11) and an outer module (12), wherein an installation cavity is formed between the inner module (11) and the outer module (12), wherein the rotating core-pulling block (2) and the transmission member (4) are arranged in the installation cavity, wherein an opening is provided on the inner module (11), wherein the core-pulling portion (23) of the rotating core-pulling block (2) passes through the opening, and wherein an installation opening is provided at the bottom of the outer module (12), wherein the oil cylinder (5) is fixed at the bottom of the outer module (12), and a piston rod of the oil cylinder (5) extends into the installation opening and is connected to the transmission member (4) in the installation cavity.

9. The rotary core-pulling structure of the refrigerator drawer handle mold according to claim 8, characterized in that: Both ends of the inner module (11) and the outer module (12) are provided with aligned notches, the notches forming openings, and the water pipes (3) passing through the notches.

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