Blanking and flanging die for back plate of refrigerator

Abstract

The utility model relates to a refrigerator back plate blanking and flanging die which comprises a lower die base and a power base fixed on one side of the lower die base, a conveying mechanism used for conveying a back plate is arranged above the power base, the top of the lower die base is fixedly connected with an upper die base, and the upper die base drives a power rod through a hydraulic mechanism. The utility model relates to the technical field of backboard processing. According to the punching and flanging die for the back plate of the refrigerator, the punching head descends until the back plate is punched, the lower pressing plate moves downwards to continuously extrude a reset spring and a buffer spring, and after the right side of the back plate is subjected to downward impact force, the left side of the back plate warps and is pressed by an extrusion wheel below an extrusion rod; and as the positions of the two extrusion wheels are different, the counter-acting force of the back plate is different, under the effect of the lever, the rotating rod rotates to balance the force of the extrusion wheels on the two sides of the extrusion rod, it is guaranteed that pressure is evenly applied to the back plate, and the back plate is effectively prevented from deforming.

Description

Technical Field

[0001] The utility model relates to the technical field of back plate processing, in particular to a die for punching and flanging the back plate of a refrigerator. Background Art

[0002] The back panel of the refrigerator needs to go through two processing steps during processing. The first step is pressing, cutting corners, and punching, which is completed by the punching die. The second step is flanging, pressing, and punching, which is completed by the flanging die.

[0003] The existing punching and flanging die needs to fix the back panel when punching the back panel. However, because the back panel is subjected to force on one side during punching, the back panel will warp up. At this time, the back panel is limited by a limiting mechanism. However, due to excessive limiting force, the back panel may be deformed under the reaction force, affecting the quality of the finished product. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a refrigerator back panel punching and flanging die, which solves the above-mentioned problems.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a refrigerator back panel blanking and flanging die, comprising a lower die base and a power base fixed to one side of the lower die base, a conveying mechanism for conveying the back panel is provided above the power base, an upper die base is fixedly connected to the top of the lower die base, and the upper die base is driven by a power rod through a hydraulic mechanism, and a punching head for blanking the back panel is fixedly connected to the bottom of the power rod;

[0006] The top of the lower die seat is fixedly connected with a return spring, and the top of the return spring is fixedly connected with a movable frame, and the inner cavity of the movable frame is rotatably connected to the extrusion rod through a rotating rod, and both ends of the extrusion rod are fixedly connected to the extrusion wheel, and the top of the movable frame is fixedly connected to the sliding frame through a buffer spring, and the sliding frame is sleeved on the surface of the power rod and is slidably connected to the surface of the power rod, and the surface of the power rod above the sliding frame is fixedly connected with a lower pressure plate, which places the back plate above the lower die seat, and then the conveyor belt rotates in the inner groove to transport the back plate through the push plate. After the back plate is transported to the bottom of the punching head, the conveyor belt stops transporting, and then the power rod is driven down by the hydraulic mechanism to press the punching head down to fit the forming groove to punch the back plate, and When the power rod is pressed down, the upper lower pressure plate is pressed down first and squeezed to the sliding frame. The sliding frame drives the movable frame to move downward, squeezing the buffer spring and the return spring. At this time, the extrusion wheel of the extrusion rod moves downward to abut the top of the back plate, limiting the back plate, and then the punching head continues to descend until the back plate is punched. At this time, the lower pressure plate moves downward to continue squeezing the return spring and the buffer spring. Then, after the right side of the back plate is subjected to the downward impact force, the left side is tilted up and is pressed by the extrusion wheel under the extrusion rod. Because the positions of the two extrusion wheels are different, the reaction force of the back plate is different. At this time, under the action of the lever, the rotating rod rotates to balance the force of the extrusion wheels on both sides of the extrusion rod, ensuring uniform pressure on the back plate and effectively preventing deformation of the back plate.

[0007] As a further solution of the present invention: the conveying mechanism includes a conveyor belt driven by a power roller above the power seat, one side of the conveyor belt passes through and extends to the inner cavity of the lower die seat, the inner cavity of the lower die seat is provided with an inner groove adapted to the surface of the conveyor belt, the surface of the conveyor belt is fixedly connected with a plurality of evenly distributed push plates, the top of the conveyor belt is located below the lower die seat, and the push plate is located above the lower die seat. When in use, the back plate is placed above the lower die seat, and then the conveyor belt rotates in the inner groove to convey the back plate through the push plate. While being able to feed the back plate in a rapid cycle, it will not occupy the space above the lower die seat, and plays an effective supporting role when the punching head punches the back plate, and does not interfere with normal processing when being able to convey the back plate.

[0008] As a further solution of the present invention: the inner cavity of the lower die base is provided with a forming groove adapted to the punching head, and the surface of the lower die base is provided with a slope located on the right side of the forming groove. Through the setting of the slope, the back panel after punching and forming can be effectively output along the slope without jamming.

[0009] As a further solution of the present invention: there are two extrusion wheels, which are symmetrically arranged on both sides of the extrusion rod with the rotating rod as the center. After one of the two extrusion wheels is extruded, force is applied to the extrusion wheel on the other side through the rotating rod. The lever principle is used to effectively maintain the force balance on both sides, preventing excessive pressure on the back plate from being applied on one side, which causes deformation of the back plate during the punching process.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. In the utility model, the punching head descends until the back plate is punched, and the lower pressure plate moves downward to continue squeezing the reset spring and the buffer spring. After the right side of the back plate is subjected to the downward impact force, the left side is tilted and pressed by the extrusion wheel under the extrusion rod. Because the two extrusion wheels are in different positions, they are subjected to different reaction forces from the back plate. Under the action of the lever, the rotating rod rotates to balance the force of the extrusion wheels on both sides of the extrusion rod, ensuring uniform pressure on the back plate and effectively preventing the back plate from deformation.

[0012] 2. When in use, the utility model places the back plate above the lower die base, and then the conveyor belt rotates in the inner groove to transport the back plate through the push plate. While being able to quickly feed the back plate in a cycle, it does not occupy the space above the lower die base, plays an effective supporting role when the punching head punches the back plate, and does not interfere with normal processing when the back plate can be transported. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 This is a top view of the structure of the power base and the lower die base of the utility model;

[0015] Figure 3 For this utility model Figure 1 A partial enlarged view of point A in the middle.

[0016] In the figure: 1. Power seat; 2. Lower die seat; 3. Conveyor belt; 4. Push plate; 5. Inner groove; 6. Power rod; 7. Lower pressure plate; 9. Punching head; 11. Return spring; 12. Movable frame; 13. Rotating rod; 14. Extrusion rod; 15. Extrusion wheel; 16. Buffer spring; 17. Sliding frame; 18. Upper die seat; 19. Slope. DETAILED DESCRIPTION

[0017] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0018] See also Figure 1-3 The utility model provides a technical solution: a refrigerator back panel blanking and flanging die, comprising a lower die base 2 and a power base 1 fixed to one side of the lower die base 2, a conveying mechanism for conveying the back panel is provided above the power base 1, an upper die base 18 is fixedly connected to the top of the lower die base 2, and the upper die base 18 is driven by a power rod 6 through a hydraulic mechanism, and a punching head 9 for blanking the back panel is fixedly connected to the bottom of the power rod 6;

[0019] The top of the lower die base 2 is fixedly connected with a return spring 11, and the top of the return spring 11 is fixedly connected with a movable frame 12. The inner cavity of the movable frame 12 is rotatably connected to the extrusion rod 14 through a rotating rod 13. Both ends of the extrusion rod 14 are fixedly connected with an extrusion wheel 15. The top of the movable frame 12 is fixedly connected with a sliding frame 17 through a buffer spring 16. The sliding frame 17 is sleeved on the surface of the power rod 6 and is slidably connected to the surface of the power rod 6. The surface of the power rod 6 above the sliding frame 17 is fixedly connected with a lower pressure plate 7. The back plate is placed on the top of the lower die base 2, and then the conveyor belt 3 rotates in the inner groove 5 to transport the back plate through the push plate 4. After the back plate is transported to the bottom of the punching head 9, the conveyor belt 3 stops transporting. At this time, the power rod 6 is driven down by the hydraulic mechanism to press the punching head 9 down to fit the forming groove to punch the back plate, and the power rod 6 When pressing down, the upper lower pressure plate 7 presses down first and squeezes the sliding frame 17. The sliding frame 17 drives the movable frame 12 to move downward, squeezing the buffer spring 16 and the return spring 11. At this time, the squeezing wheel 15 of the squeezing rod 14 moves downward to abut the top of the back plate, limiting the back plate, and then the punching head 9 continues to descend until the back plate is punched. At this time, the lower pressure plate 7 moves downward to continue squeezing the return spring 11 and the buffer spring 16. Then, after the right side of the back plate is subjected to the downward impact force, the left side is tilted, and is now pressed by the squeezing wheel 15 under the squeezing rod 14. Because the positions of the two squeezing wheels 15 are different, they are subject to different reaction forces from the back plate. At this time, under the action of the lever, the rotating rod 13 rotates to balance the force of the squeezing wheels 15 on both sides of the squeezing rod 14, ensuring uniform pressure on the back plate and effectively preventing the back plate from deforming.

[0020] The conveying mechanism includes a conveyor belt 3 driven by a power roller above the power base 1. One side of the conveyor belt 3 passes through and extends to the inner cavity of the lower die base 2. The inner cavity of the lower die base 2 is provided with an inner groove 5 adapted to the surface of the conveyor belt 3. The surface of the conveyor belt 3 is fixedly connected with a plurality of evenly distributed push plates 4. The top of the conveyor belt 3 is located below the lower die base 2, and the push plate 4 is located above the lower die base 2. When in use, the back plate is placed above the lower die base 2, and then the conveyor belt 3 rotates in the inner groove 5 to convey the back plate through the push plate 4. While being able to feed the back plate in a rapid cycle, it will not occupy the space above the lower die base 2. It plays an effective supporting role when the punching head 9 punches the back plate, and does not interfere with normal processing when it can convey the back plate.

[0021] The inner cavity of the lower die base 2 is provided with a forming groove adapted to the punching head 9, and the surface of the lower die base 2 is provided with a slope 19 located on the right side of the forming groove. Through the setting of the slope 19, the back panel after punching and forming can be effectively output along the slope 19 without jamming.

[0022] There are two extrusion wheels 15, which are symmetrically arranged on both sides of the extrusion rod 14 with the rotating rod 13 as the center. After one of the two extrusion wheels 15 is extruded, force is applied to the extrusion wheel 15 on the other side through the rotating rod 13. The lever principle is used to effectively maintain the force balance on both sides, preventing excessive pressure on the back plate from being applied on one side, causing deformation of the back plate during the punching process.

[0023] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A die for blanking and flanging the back panel of a refrigerator, comprising a lower die base (2) and a power base (1) fixed to one side of the lower die base (2), characterized in that: A conveying mechanism for conveying the back plate is provided above the power seat (1); an upper die seat (18) is fixedly connected to the top of the lower die seat (2); the upper die seat (18) is driven by a power rod (6) through a hydraulic mechanism; and a punching head (9) for punching the back plate is fixedly connected to the bottom of the power rod (6); The top of the lower die base (2) is fixedly connected to a return spring (11), the top of the return spring (11) is fixedly connected to a movable frame (12), the inner cavity of the movable frame (12) is rotatably connected to an extrusion rod (14) through a rotating rod (13), both ends of the extrusion rod (14) are fixedly connected to extrusion wheels (15), the top of the movable frame (12) is fixedly connected to a sliding frame (17) through a buffer spring (16), the sliding frame (17) is sleeved on the surface of the power rod (6) and is slidably connected to the surface of the power rod (6), and the surface of the power rod (6) located above the sliding frame (17) is fixedly connected to a lower pressure plate (7).

2. The refrigerator back panel blanking and flanging die according to claim 1, characterized in that: The conveying mechanism includes a conveyor belt (3) driven by a power roller above a power seat (1), one side of the conveyor belt (3) passes through and extends to the inner cavity of the lower die seat (2), the inner cavity of the lower die seat (2) is provided with an inner groove (5) adapted to the surface of the conveyor belt (3), the surface of the conveyor belt (3) is fixedly connected with a plurality of evenly distributed push plates (4), the top of the conveyor belt (3) is located below the lower die seat (2), and the push plates (4) are located above the lower die seat (2).

3. The refrigerator back panel blanking and flanging die according to claim 1, characterized in that: The inner cavity of the lower die base (2) is provided with a forming groove adapted to the punching head (9), and the surface of the lower die base (2) is provided with a slope (19) located on the right side of the forming groove.

4. The refrigerator back panel blanking and flanging die according to claim 1, characterized in that: Two extrusion wheels (15) are provided, and are symmetrically arranged on both sides of the extrusion rod (14) with the rotating rod (13) as the center.

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