Refrigerator injection molding part trimming assembly

By designing a beveling component for refrigerator injection molded parts, the problems of wire pulling and unevenness on the side of the refrigerator vertical beam were solved, achieving precise beveling of the injection molded parts' edges and improving product quality and aesthetics.

CN223790895UActive Publication Date: 2026-01-13HEFEI WOLONG PLASTIC IND CO LTD
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Patent Information

Application Number
CN202520420036.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-11
Publication Date
2026-01-13
Estimated Expiration
2035-03-11

AI Technical Summary

Technical Problem

During the molding process, the sides of the refrigerator's vertical beams are prone to wire-like defects and unevenness, which affects the appearance and usability.

Method used

A refrigerator injection molding part edge trimming assembly was designed, including an equipment bracket, a pressure component, a bonding component, and an edge trimming mechanism, which can achieve precise edge trimming of the injection molding part through manual or automatic control.

Benefits of technology

It effectively removes burrs and stringing from the edges of injection molded parts, improving product quality and aesthetics, and is simple and convenient to operate.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a refrigerator injection molding part trimming assembly, and particularly relates to the field of refrigerator injection molding part processing, which comprises an equipment support, a first grip mounted at the top end of the equipment support, a pull handle arranged below the first grip, and a pressure part mounted on the outer side of the equipment support and capable of moving up and down, the pull handle is connected to the top end of the pressure part and drives the pressure part to ascend and descend, an attaching part for exerting pressure on the edge of the injection molding part is installed at the bottom end of the pressure part, and an edge trimming mechanism for trimming the edge of the injection molding part is installed at the bottom end of the equipment support and located over the attaching part. The trimming device can be freely adjusted according to the thickness of an injection molding part and the thickness needing to be trimmed, trimming treatment on burrs and drawn wires at the edge of the injection molding part is achieved, operation is easy and convenient, and the product quality of the injection molding part is improved.
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Description

Technical Field

[0001] This utility model relates to the field of refrigerator injection molding processing, and more specifically, it relates to a refrigerator injection molding edge trimming assembly. Background Technology

[0002] The refrigerator door frame is an injection-molded component used to seal and connect the two refrigerator door panels. During the production process, the refrigerator door frame assembly is integrally molded by injection molding. However, due to temperature or improper operation, some of the molded refrigerator door frames may have unevenness on the sides, affecting the normal use and aesthetics of the refrigerator door frame. Therefore, it is necessary to process the unevenness on the sides of the refrigerator door frame to ensure that the refrigerator door frame meets the dimensions of standard parts when it leaves the factory. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a refrigerator injection molding part edge trimming assembly, including an equipment bracket, a first handle installed at the top of the equipment bracket, a pull handle provided below the first handle, a lifting and movable pressure member installed on the outside of the equipment bracket, the pull handle connected to the top of the pressure member and driving the pressure member to lift and move, a bonding member for applying pressure to the edge of the injection molding part installed at the bottom of the pressure member, and an edge trimming mechanism for trimming the edge of the injection molding part installed at the bottom of the equipment bracket, the edge trimming mechanism being located directly above the bonding member.

[0004] In a preferred embodiment, the first grip and the device bracket are arranged in an "L" shape, and a number of control buttons are installed on the end of the device bracket near the first grip. A second grip is installed on the outer side wall of the device bracket.

[0005] In a preferred embodiment, the pressure component includes a sleeve located on one side of the equipment bracket and a pressure rod inserted into the sleeve. Several fixed rods are connected between the sleeve and the equipment bracket. The two ends of the pressure rod extend to the upper and lower sides of the sleeve, respectively. The handle is L-shaped and its end is fixed to the top of the pressure rod. The pressure rod moves up and down within the sleeve.

[0006] In a preferred embodiment, a return spring is connected to both the top and bottom ends of the sleeve. The return spring is sleeved outside the pressure rod. The top end of the return spring at the top end of the sleeve is connected to the end of the handle. The bottom end of the return spring at the bottom end of the sleeve is fixed with a stop block, which is fixed to the bottom end of the pressure rod.

[0007] In a preferred embodiment, the bonding component includes a pressure plate located below the edge trimming mechanism, a plurality of support seats are mounted on the surface of the pressure plate, rotating balls are embedded at the top of the support seats, and a connecting rod is fixed at the edge of the pressure plate, the top of the connecting rod being fixed to the bottom of the abutment block.

[0008] In a preferred embodiment, the edge trimming mechanism includes a drive motor fixed to the bottom of the equipment support. The bottom of the output shaft of the drive motor extends downward and an edge trimming head is installed at the end. A fixing ring is sleeved on the outside of the drive motor. Two symmetrically arranged fixing seats are installed on the outside of the fixing ring. The two fixing seats are located on the same straight line as the pressure plate.

[0009] In a preferred embodiment, a downwardly extending servo push rod is mounted on the fixed base, and a caster wheel is mounted on the end of the output shaft of the servo push rod.

[0010] The technical effects and advantages of this utility model are as follows:

[0011] When in use, this utility model can be freely adjusted according to the thickness of the injection molded part and the thickness that needs to be trimmed, so as to achieve the trimming treatment of burrs and wires at the edge of the injection molded part. The operation is simple and convenient, and improves the product quality of the injection molded part. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 For the present utility model Figure 1 Detailed structural diagram of point A in the middle.

[0014] Explanation of reference numerals in the attached figures:

[0015] 1. Equipment bracket; 2. First grip; 3. Pull handle;

[0016] 4. Pressure component, 41. Sleeve, 42. Pressure rod, 43. Fixing rod, 44. Return spring, 45. Abutment block;

[0017] 5. Fitting component, 51. Pressure plate, 52. Support base, 53. Ball bearing, 54. Connecting rod;

[0018] 6. Edge trimming mechanism, 61. Drive motor, 62. Edge trimming cutter head, 63. Fixing ring, 64. Fixing base, 65. Servo push rod, 66. Universal wheel;

[0019] 7 control buttons;

[0020] 8. Second grip. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0022] like Figure 1-2 The refrigerator injection molding part trimming assembly shown includes a device bracket 1, a first handle 2 installed at the top of the device bracket 1, a pull handle 3 provided below the first handle 2, a lifting and movable pressure member 4 installed on the outside of the device bracket 1, the pull handle 3 connected to the top of the pressure member 4 and driving the pressure member 4 to lift and move, a bonding member 5 for applying pressure to the edge of the injection molding part installed at the bottom of the pressure member 4, and a trimming mechanism 6 for trimming the edge of the injection molding part installed at the bottom of the device bracket 1, the trimming mechanism 6 being located directly above the bonding member 5.

[0023] The first grip 2 and the equipment bracket 1 are arranged in an "L" shape. Several control buttons 7 are also installed on the end of the equipment bracket 1 near the first grip 2. A second grip 8 is installed on the outer side wall of the equipment bracket 1.

[0024] Based on the above, when using the device, grasp the first handle 2 and the second handle 8 with both hands respectively, lift the device support 1, and move the edge trimming mechanism 6 at the bottom of the device support 1 to the edge of the injection molded part. Use the fingers holding the first handle 2 to pull the handle 3, which will drive the pressure component 4 to move up and down, so that the fitting component 5 at the bottom of the pressure component 4 is attached to the lower edge of the injection molded part, applying pressure to the injection molded part, so that the entire edge trimming mechanism 6 is pressed against the edge of the injection molded part. Then move the device support 1 to make the edge trimming mechanism 6 trim and flatten the edge of the injection molded part, removing foreign objects such as burrs and streaks from the edge of the injection molded part.

[0025] The pressure component 4 includes a sleeve located on one side of the equipment support 1 and a pressure rod 42 inserted into the sleeve. Several fixed rods 43 are connected between the sleeve and the equipment support 1. The two ends of the pressure rod 42 extend to the upper and lower sides of the sleeve, respectively. The handle 3 is arranged in an "L" shape and its end is fixed to the top of the pressure rod 42. The pressure rod 42 moves up and down inside the sleeve.

[0026] Several fixing rods 43 fix the sleeve to the outer wall of the equipment bracket 1. The pressure rod 42 is inserted into the sleeve for easy up and down movement. The sleeve provides a limiting and guiding effect for the movement of the pressure rod 42. The handle 3 is located directly below the first handle 2. When the user holds the first handle 2, the handle 3 can be moved by pressing the handle with the fingers.

[0027] A return spring 44 is connected to both the top and bottom of the sleeve. The return spring 44 is sleeved on the outside of the pressure rod 42. The top of the return spring 44 at the top of the sleeve is connected to the end of the handle 3. The bottom of the return spring 44 at the bottom of the sleeve is fixed with a stop block 45. The stop block 45 is fixed to the bottom of the pressure rod 42.

[0028] Based on the above, when the user holds the first grip 2, the fingers can be hooked onto the pull handle 3. Pulling the pull handle 3 upward causes the pressure rod 42 to overcome the elastic force of the return spring 44 and move upward within the sleeve. This causes the bottom of the pressure rod 42 to move up and down. The installed return spring 44 can provide a certain buffering effect, and at the same time, the edge-cutting structure resets the edge 5 and the pressure rod 42.

[0029] The bonding component 5 includes a pressure plate 51 located below the edge trimming mechanism 6. Several support seats 52 are installed on the surface of the pressure plate 51. Rotating balls 53 are embedded at the top of the support seats 52. A connecting rod 54 is fixed at the edge of the pressure plate 51. The top of the connecting rod 54 is fixed to the bottom of the abutment block 45.

[0030] Based on the above, when the pressure rod 42 moves and drives the bonding component 5 to move, it will drive the pressure plate 51 to move upward through the connecting rod 54. In use, the bonding component 5 is moved to the area below the edge of the injection molded part that needs to be trimmed. After the pressure plate 51 moves upward, the rotating balls 53 on several support seats 52 will be attached to the bottom of the edge of the injection molded part. During the trimming process, the trimming mechanism 6 moves, the bonding component moves along the surface of the injection molded part, and the rotation of the balls 53 reduces friction and makes the movement smoother.

[0031] The edge trimming mechanism 6 includes a drive motor 61 fixed to the bottom of the equipment bracket 1. The bottom of the output shaft of the drive motor 61 extends downward and the end is equipped with an edge trimming head 62. A fixing ring 63 is sleeved on the outside of the drive motor 61. Two symmetrically arranged fixing seats 64 are installed on the outside of the fixing ring 63. The two fixing seats 64 are located on the same straight line as the pressure plate 51. A servo push rod 65 extending downward is installed on the fixing seat 64. A universal wheel 66 is installed at the end of the output shaft of the servo push rod 65.

[0032] Based on the above, several control buttons 7 control the servo push rod 65 and the drive motor 61. During operation, the bonding part 5 is first moved to the lower edge of the injection molded part. Then, the pull handle 3 is pulled to move the pressure rod 42 upward, causing the bonding part 5 at the bottom of the pressure rod 42 to move upward. The ball bearings 53 on the support seat 52 in the bonding part 5 are attached to the bottom of the injection molded part edge. At the same time, the servo push rod 65 above is controlled to work, causing the universal wheel 66 at its bottom to move downward and abut against the top of the injection molded part edge, fixing the entire equipment part at the injection molded part edge. According to the thickness of the injection molded part edge and the thickness to be trimmed, the upward distance of the bonding part 5 and the downward distance of the universal wheel 66 can be freely controlled, so that the trimming head 62 can act on the burrs and roughness at the injection molded part edge, completing effective cleaning.

[0033] During the edge trimming process, the equipment support 1 can be moved by the first handle 2 and the second handle 8, so that the edge trimming head 62 at the bottom moves at the edge of the injection molded part. During this process, the ball bearing 53 rotates against the bottom of the injection molded part edge, and the universal wheel 66 at the top of the injection molded part edge also freely adjusts its orientation and rotates along the surface of the injection molded part according to the direction of movement, which facilitates operation.

[0034] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A refrigerator injection molding part edge trimming assembly, characterized by, The device support is provided with a first handle at the top end, a pull handle below the first handle, a pressure piece movably arranged outside the device support, the pull handle being connected to the top end of the pressure piece and driving the pressure piece to move up and down, a fitting piece being arranged at the bottom end of the pressure piece and applying pressure to the edge of the injection molded part, an edge trimming mechanism being arranged at the bottom end of the device support and trimming the edge of the injection molded part, the edge trimming mechanism being arranged directly above the fitting piece.

2. The refrigerator injection molding edge trimming assembly of claim 1, wherein: The first handle and the device support are arranged in an "L" shape, and a plurality of control buttons are arranged at the end of the device support close to the first handle, and a second handle is arranged on the outer wall of the device support.

3. The refrigerator injection molding edge trimming assembly of claim 1, wherein: The pressure piece comprises a sleeve arranged at one side of the device support and a pressure rod inserted into the sleeve, a plurality of fixing rods being connected between the sleeve and the device support, the two ends of the pressure rod extending to the upper and lower sides of the sleeve, the pull handle being arranged in an "L" shape and fixed at the top end of the pressure rod, and the pressure rod moving up and down in the sleeve.

4. The refrigerator injection molding edge trim assembly of claim 3, wherein: Reset springs are connected to the top end and the bottom end of the sleeve, the reset springs being arranged outside the pressure rod, the top end of the reset spring arranged at the top end of the sleeve being connected to the end of the pull handle, the bottom end of the reset spring arranged at the bottom end of the sleeve being fixed with an abutting block, and the abutting block being fixed at the bottom end of the pressure rod.

5. A trimmer assembly for a refrigerator injection molded part according to claim 4, characterized in that: The fitting piece comprises a pressure plate arranged below the edge trimming mechanism, a plurality of support seats being arranged on the surface of the pressure plate, rotating balls being embedded at the top end of the support seats, and connecting rods being fixed at the edge of the pressure plate, and the top end of the connecting rod being fixed at the bottom of the abutting block.

6. A trimmer assembly for a refrigerator injection molded part according to claim 5, characterized in that: The edge trimming mechanism comprises a driving motor fixed at the bottom end of the device support, the output shaft of the driving motor extending downward and being provided with an edge trimming tool at the end, a fixing ring being arranged outside the driving motor, two symmetrical fixing seats being arranged outside the fixing ring, and the two fixing seats being arranged on the same straight line as the pressure plate.

7. A refrigerator injection molding edge trimming assembly as defined in claim 6, wherein: A servo push rod extending downward is arranged on the fixing seat, and a universal wheel is arranged at the end of the output shaft of the servo push rod.