A continuous rolling type cold storage cabinet door seal flexible pressing device and its operation method

Abstract

The application discloses a continuous rolling type cold storage cabinet door seal flexible pressing device and an operating method thereof, relates to the technical field of cold storage cabinet production equipment, and comprises a rack, a conveying platform, a pre-pressing guide rail groove, a seal supply disc, a seal leading-in assembly, a rear mounting bracket, a horizontal driving assembly, an assembly rolling assembly, a pre-positioning pressing assembly, a control machine case and a height sensor. The device is matched with a rigid pressing wheel through a flexible pressing roller, realizes continuous rolling pressing of the cold storage cabinet door seal, and realizes local automatic compensation pressing through the height sensor and a photoelectric positioning sensor. The application has the advantages of high pressing efficiency, low damage to the seal, high automation degree and good pressing consistency, and is suitable for the automatic installation production line of the cold storage cabinet door body seal.

Description

Technical Field

[0001] This invention relates to the field of refrigerated display case production equipment technology, specifically to a continuous rolling type flexible pressing device for refrigerated display case door seals and its operating method. Background Technology

[0002] Refrigerated display cases, frozen display cases, and commercial refrigeration equipment typically have magnetic sealing strips on their doors to ensure a tight seal when the doors are closed, reduce cold loss, and improve refrigeration efficiency.

[0003] Currently, the installation of refrigerated cabinet door seals mainly employs manual pressing or semi-automatic assisted pressing methods. During manual installation, operators typically use rubber rollers or manual pressing plates to press the seal into the door groove section by section. This method suffers from high labor intensity, low installation efficiency, and poor pressing consistency.

[0004] In addition, in the corner area of ​​the seal, due to the large bending deformation of the seal, traditional manual pressing is prone to problems such as local curling, incomplete pressing, and twisting of the seal core, which affect the overall sealing performance of the refrigerator.

[0005] While some existing automatic pressing equipment can achieve a certain degree of automation, most of them adopt a fixed rigid pressure roller structure. When faced with door bodies of different specifications and local height errors, they are prone to uneven pressing pressure, which can lead to seal damage, incomplete pressing in some areas, and seal rebound.

[0006] Therefore, there is a need for a continuous rolling type flexible pressing device for refrigerator door seals and its operation method that can achieve continuous conveying, flexible rolling, automatic positioning, and local compensation pressing. Summary of the Invention

[0007] The purpose of this invention is to provide a continuous rolling type flexible pressing device for refrigerator door seals and its operation method, so as to solve the technical problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A continuous rolling type flexible pressing device for refrigerator door seals and its operation method include a frame, a conveying platform, a pre-pressing guide rail groove, a seal guide assembly, an assembly rolling assembly, a horizontal drive assembly, a pre-positioning pressing assembly, a control box, and a height sensor. Among them, the assembly rolling assembly adopts a structure that combines flexible pressing rollers and rigid pressing rollers to achieve continuous rolling pressing of the seal; The horizontal drive assembly adopts a closed rack and pinion meshing transmission structure to achieve stable reciprocating movement of the assembled rolling assembly. The height sensor works in conjunction with the photoelectric positioning sensor to detect local bulging areas of the seal and control the assembly of the rolling component to perform local compensation reciprocating rolling.

[0009] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention adopts a combination structure of flexible pressing rollers and rigid pressing rollers, which can improve the overall pressing consistency of the seal and reduce the pressing damage of the seal; 2. The present invention adopts a closed rack and pinion cyclic drive structure, which can improve the operational stability of the assembled rolling assembly and reduce the vibration problem caused by traditional linear rack and pinion drive; 3. This invention uses a height sensor and a photoelectric positioning sensor to detect bulging areas of the seal, which can automatically compensate for the rolling pressure and improve the sealing effect of the seal. 4. This invention can adapt to different specifications of refrigerator doors, improving the versatility of the equipment; 5. This invention has a high degree of automation, which can reduce the intensity of manual labor and improve production efficiency; 6. This invention enables automatic installation of seals on a continuous production line, and is suitable for mass production of refrigerator doors. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the assembly of the rolling assembly and the horizontal drive assembly of the present invention; Figure 3 This is a schematic diagram of the assembly and rolling component structure of the present invention; Figure 4 This is a partial structural diagram of the assembly and rolling component of the present invention; Figure 5 This is a schematic diagram of the horizontal drive component structure of the present invention; Figure 6 This is a schematic diagram of the rear view structure of the present invention.

[0011] In the picture: 1. Rack; 2. Conveying platform; 21. Embedded conveyor belt; 22. External motor with shaft; 3. Pre-loaded guide rail groove; 4. Seal import component; 41. Lifting electric push rod; 42. Cable reel; 5. Sealing strip feeding tray; 6. Assemble the rolling assembly; 61. Position the upper plate; 62. Screw drive unit; 63. Guide rod assembly; 64. Position the lower plate; 65. Limiting sleeve; 66. Flexible pressing rollers; 67. Rigidly press-fitted pressure rollers; 68. Photoelectric positioning sensor; 69. Side pressure head mounting plate; 610. Adjustable threaded rod; 611. Cylinder; 612. Upper interlocking block; 613. Adjust the connecting plate; 614. Positioning slide rail; 7. Horizontal drive component; 71. Outer compartment; 72. Rack and pinion limiting groove; 73. Closed rack and pinion assembly; 74. Internal gear set; 75. Drive motor; 8. Pre-positioning and pressing components; 81. Hydraulic rod assembly; 82. Pre-stressed connecting plate; 83. Spring rod; 84. Pre-positioning pressure plate; 9. Install the bracket afterward; 10. Control chassis; 11. Altitude sensor. Detailed Implementation

[0012] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0013] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0014] like Figure 1-6 As shown, the present invention provides a technical solution: a continuous rolling type flexible pressing device for refrigerator door seals and its operation method, including a frame 1, and a conveying platform 2 is provided on the top of the frame 1.

[0015] The conveyor platform 2 is equipped with an embedded conveyor belt 21, which is driven by an external motor 22 with a shaft to continuously convey the refrigerator door.

[0016] The pre-compression guide groove 3 is set on the top of the conveying platform 2 to guide and limit the initial installation position of the seal.

[0017] The sealing strip feeding tray 5 is located on one side of the frame 1, and the sealing strip is wound around the outside of the sealing strip feeding tray 5.

[0018] The lifting electric push rod 41 in the seal guide assembly 4 can adjust the height of the wire reel 42 so that the seal output position corresponds to the pre-pressurized guide groove 3.

[0019] The rear mounting bracket 9 is used to mount the horizontal drive assembly 7.

[0020] The drive motor 75 in the horizontal drive assembly 7 drives the internal gear set 74 to rotate. The internal gear set 74 meshes with the closed rack set 73, thereby driving the assembly rolling assembly 6 to move along the conveying direction.

[0021] The flexible pressing roller 66 in the assembly rolling assembly 6 is used to flexibly roll the seal, which can adapt to local dimensional errors of the door.

[0022] The rigid pressing roller 67 is used to reinforce the edge area of ​​the seal.

[0023] The photoelectric positioning sensor 68 is used to detect the position of the seal.

[0024] The hydraulic rod group 81 in the prepositioning press assembly 8 drives the prepositioning pressure plate 84 to press down, so that the seal is pre-fitted into the door groove.

[0025] The height sensor 11 is used to detect the height status of the seal after it has been pressed in.

[0026] When a local bulge area is detected, the control box 10 controls the assembly rolling component 6 to move to the corresponding position and performs positioning identification through the photoelectric positioning sensor 68. Then, local small-range reciprocating compensation rolling is performed to improve the flatness and sealing performance of the seal.

[0027] This invention effectively improves the quality and production efficiency of automatic installation of refrigerator door seals through the combination of flexible pressing, closed rack and pinion cycle drive, and local automatic compensation rolling structure.

[0028] In summary, the continuous rolling type flexible pressing device for refrigerator door seals and its operation method involve first placing the refrigerator door on the conveyor platform 2, then feeding the seal through the seal supply tray 5 and initially fixing it using the pre-positioning pressing assembly 8. Next, the seal is continuously rolled and pressed using the rolling assembly 6. With the cooperation of the height sensor 11 and the photoelectric positioning sensor 68, automatic compensation rolling is performed on local abnormal areas, thereby improving the pressing quality and sealing performance of the seal.

[0029] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A continuous rolling type flexible pressing device for refrigerator door seals and its operating method, characterized in that, include: Rack (1); The conveying platform (2) is located on top of the frame (1); The pre-compression guide rail groove (3) is set on the conveying platform (2); A sealing strip feed tray (5) is located on one side of the frame (1); The seal guide component (4) is located between the seal feed tray (5) and the conveyor platform (2); The rear mounting bracket (9) is vertically mounted on the rear side of the frame (1); The horizontal drive assembly (7) is located on the front side of the rear mounting bracket (9) and is arranged vertically parallel to the preload guide groove (3); The assembly rolling assembly (6) is located at the bottom of the horizontal drive assembly (7), which is used to drive the assembly rolling assembly (6) to run. The pre-positioning press assembly (8) is arranged parallel to both sides of the assembly rolling assembly (6); The control chassis (10) is electrically connected to the horizontal drive assembly (7); Height sensors (11) are arranged on the rear side of the preloaded guide rail groove (3).

2. The continuous rolling type flexible pressing device for refrigerator door seals and its operation method according to claim 1, characterized in that: The conveying platform (2) includes an embedded conveyor belt (21) and an external motor (22) with a shaft. The embedded conveyor belt (21) is embedded on both sides of the conveying platform (2), and the drive shaft of the embedded conveyor belt (21) is connected to the external motor (22).

3. The continuous rolling type flexible pressing device for refrigerator door seals and its operating method according to claim 1, characterized in that: The sealing strip guide assembly (4) includes a lifting electric push rod (41) and a wire reel (42). The top movable shaft of the lifting electric push rod (41) is connected to the wire reel (42). The position of the wire reel (42) and the horizontal position of the pre-compression guide groove (3) are mutually coordinated.

4. The continuous rolling type flexible pressing device for refrigerator door seals and its operating method according to claim 1, characterized in that: The assembly rolling assembly (6) includes a positioning upper plate (61), a screw drive unit (62), a guide rod group (63), a positioning lower plate (64), a limiting sleeve plate (65), a flexible pressing roller (66), a rigid pressing roller (67), a photoelectric positioning sensor (68), a side pressure head mounting plate (69), an adjustable threaded rod (610), a cylinder (611), an upper fitting block (612), an adjusting connecting plate (613), and a positioning slide rail (614). The cylinder (611) is provided with an upper fitting block (612) at the top, and a limit sleeve plate (65) is connected to the bottom of the telescopic end of the cylinder (611). A flexible press roller (66) is rotatably installed on the inner side of the limit sleeve plate (65). The upper positioning plate (61) and the lower positioning plate (64) are fixedly installed on the outer side of the cylinder (611), and the upper positioning plate (61) and the lower positioning plate (64) are arranged in parallel. The top two sides of the positioning plate (61) are respectively provided with a screw drive unit (62) and a guide rod unit (63). The screw drive unit (62) is connected to the side pressure head mounting plate (69) for transmission, and the guide rod group (63) is connected to the side pressure head mounting plate (69) for sliding guidance, which is used to drive the side pressure head mounting plate (69) to make lateral adjustment and movement; The side pressure head mounting plate (69) has an overall L-shaped structure, and adjustable threaded rods (610) are fixedly installed on both sides of its horizontal end. The bottom of the adjustable threaded rod (610) is rotatably mounted with a rigid press roller (67). An adjusting connecting plate (613) is sleeved on the outer side of the two sets of adjustable threaded rods (610); The inner side of the vertical end of the side pressure head mounting plate (69) is provided with a positioning slide rail (614), and the adjusting connecting plate (613) is slidably fitted into the positioning slide rail (614); A photoelectric positioning sensor (68) is installed on the outside of the positioning plate (61). The detection direction of the photoelectric positioning sensor (68) is perpendicular to the pre-pressed guide rail groove (3).

5. The continuous rolling type flexible pressing device for refrigerator door seals and its operating method according to claim 1, characterized in that: The horizontal drive assembly (7) includes an outer housing (71), a rack limiting groove (72), a closed rack assembly (73), an internal gear assembly (74), and a drive motor (75). The closed rack assembly (73) has a racetrack-shaped closed-loop structure with arc segments at both ends and a straight segment in the middle. The closed rack assembly (73) is disposed inside the rack limiting groove (72); The internal gear set (74) is respectively located at both ends of the closed rack set (73) and meshes with the closed rack set (73); Among them, the internal gear set (74) on one side is connected to the drive motor (75) for transmission; After the drive motor (75) drives the corresponding internal gear set (74) to rotate, it drives the other internal gear set (74) to rotate synchronously through the closed rack set (73), thereby driving the assembly rolling assembly (6) to reciprocate along the straight section of the closed rack set (73).

6. The continuous rolling type flexible pressing device for refrigerator door seals and its operation method according to claim 1, characterized in that: The prepositioning press assembly (8) includes a hydraulic rod assembly (81), a pre-pressing connecting plate (82), a spring rod (83), and a prepositioning pressure plate (84). The bottom of the hydraulic rod assembly (81) is connected to the pre-pressing connecting plate (82), and spring rods (83) are installed on both sides of the bottom of the pre-pressing connecting plate (82). The prepositioning pressure plate (84) is fixed below the spring rods (83).

7. A method for operating the continuous rolling type flexible pressing device for refrigerator door seals as described in any one of claims 1 to 6, characterized in that, Includes the following steps: S1. Place the refrigerator door on the conveyor platform (2); S2. The door body is fixed by the pre-compression guide rail groove (3); S3. The seal is fed through the seal feed tray (5) and the wire reel (42); S4. Drive the prepositioning pressure plate (84) to press down through the prepositioning pressure assembly (8) to pre-fix the seal and the door body; S5. By adjusting the positions of the bottom flexible pressing roller (66) and rigid pressing roller (67) through the transmission cooperation of the assembled rolling assembly (6) and horizontal drive assembly (7), the seal is continuously rolled and pressed. S6. The height status of the seal after pressing is detected in real time by the height sensor (11); When the height sensor (11) detects that the height value of a local area of ​​the seal exceeds the preset pressing threshold, the control box (10) controls the assembly rolling assembly (6) to move to the corresponding abnormal position; Subsequently, the abnormal area is located and identified by photoelectric positioning sensor (68), and the flexible pressing roller (66) and rigid pressing roller (67) are controlled to perform local small-range reciprocating compensation rolling pressing on the area to eliminate the phenomenon of local bulging, curling or incomplete pressing of the seal. S7. Complete the seal installation.

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