Front cover forming device of roller washing machine

Abstract

The utility model provides a front cover forming device of a roller washing machine, which comprises a rack, a support frame arranged on the rack, a lower material ejection block arranged on the rack, an upper material ejection block arranged on the support frame in a lifting manner, and a washing machine front cover arranged between the lower material ejection block and the upper material ejection block, a straight hole punching assembly used for machining straight holes is arranged on the bottom side of the washing machine front cover in a liftable mode, a rolling assembly used for machining rolled circles is arranged on the top side of the washing machine front cover in a liftable mode, and the straight hole punching assembly is connected with the rack. According to the front cover forming device of the roller washing machine, one-time forming of side forming, punching and edge rolling of the front cover of the washing machine is achieved through cooperation of the upper material ejecting block, the lower material ejecting block, a straight hole punch in the straight hole punching assembly and an edge rolling punch in the edge rolling assembly, and the problems that the forming efficiency is low due to the fact that a machining device is replaced many times, and the machining efficiency is low are solved. The forming efficiency of the front cover of the roller washing machine is high.

Description

Technical Field

[0001] This utility model relates to the field of washing machine technology, specifically to a front cover forming device for a drum washing machine. Background Technology

[0002] A drum washing machine is a common household appliance, and the drum is a crucial structural component. It consists of three stamped parts: the front cover, the rear cover, and the drum body. The front cover is located at the front of the drum, with a hole in the center. This hole is formed by stamping a straight section and an outwardly rolled end on a 0.4mm thick stainless steel sheet. The straight section increases the strength of the front cover, while the outwardly rolled end prevents burrs from causing injury. The standard stamping process for the front cover hole is as follows: first, a punching device is used for pre-punching; then, a straightening device is used to straighten the hole; and finally, a rolling device is used to roll the hole.

[0003] Existing methods for forming the front cover of washing machines often involve using different devices to process straight holes and roll them into circles, resulting in low efficiency in forming the front cover of drum washing machines. This solution addresses this technical problem. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a front cover forming device for a drum washing machine. Through the cooperation of an upper ejector block, a lower ejector block, a straight hole punch in a straight hole punching assembly, and a rolling punch in a rolling assembly, the side forming, punching, and rolling of the washing machine front cover are achieved in one step, avoiding the low forming efficiency caused by multiple changes of processing devices. The forming efficiency of the front cover of the drum washing machine is relatively high.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a front cover forming device for a drum washing machine, including a frame, a support frame disposed on the frame, a lower top material block disposed on the frame, and an upper top material block disposed on the support frame that can be raised and lowered. A washing machine front cover is disposed between the lower top material block and the upper top material block. A straight hole punching assembly for processing straight holes is disposed on the bottom side of the washing machine front cover that can be raised and lowered. A rolling assembly for processing rounding is disposed on the top side of the washing machine front cover. The straight hole punching assembly is connected to the frame, and the rolling assembly is connected to the support frame.

[0006] The straight hole assembly includes a hydraulic cylinder mounted on the frame, a straight hole punch with one end connected to the telescopic end of the hydraulic cylinder, and a positioning punch that passes through the center hole of the front cover of the washing machine at the other end of the straight hole punch.

[0007] The rolling assembly includes a second hydraulic cylinder mounted on the support frame, and a rolling punch connected to the telescopic end of the second hydraulic cylinder. The side of the rolling punch is provided with a rolling groove.

[0008] The edge of the lower top block is provided with a baffle for fixing the front cover of the washing machine.

[0009] The support frame is equipped with an array of hydraulic cylinders, and the upper material block is mounted on the support frame in a way that allows it to be raised and lowered via the hydraulic cylinders.

[0010] The ends of the straight hole punch, the positioning punch, and the rolling punch are all provided with rounded corners.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) By cooperating with the upper top material block, the lower top material block, the straight hole punch in the straight hole punching assembly, and the rolling punch in the rolling assembly, the side forming, punching and rolling of the washing machine front cover is achieved in one step, avoiding the low forming efficiency caused by changing the processing device multiple times, and the forming efficiency of the front cover of the drum washing machine is relatively high.

[0013] (2) By positioning the upper baffle of the lower top material block and the positioning punch, the positioning accuracy of the washing machine front cover is improved, thereby making the processing and forming accuracy of the washing machine front cover higher.

[0014] (3) By setting the positioning punch, the straight hole of the washing machine front cover is pre-processed and gradually enlarged, avoiding stress concentration when punching with the straight hole punch directly, and improving the positioning accuracy of the washing machine front cover. Attached Figure Description

[0015] Figure 1 This is a schematic cross-sectional view of the overall structure of this utility model;

[0016] Figure 2 This is an exploded view of the structure of the lower and upper top material blocks of this utility model;

[0017] Figure 3 This is a utility model Figure 1 A partially enlarged structural diagram of part A;

[0018] Figure 4 This is a schematic diagram of the front cover fixing of the washing machine according to this utility model;

[0019] Figure 5 This is a schematic diagram of the forming process of the front cover of the washing machine according to this utility model;

[0020] Figure 6 This is a schematic diagram of the process of punching straight holes in the front cover of the washing machine according to this utility model;

[0021] Figure 7 This is a schematic diagram of the rolling process of the front cover of the washing machine according to this utility model.

[0022] In the diagram: 1. Frame; 2. Support frame; 3. Lower top material block; 31. Baffle; 4. Upper top material block; 41. Hydraulic cylinder three; 5. Washing machine front cover; 6. Straight hole punching assembly; 61. Hydraulic cylinder one; 62. Straight hole punch; 63. Positioning punch; 7. Rolling assembly; 71. Hydraulic cylinder two; 72. Rolling punch; 721. Rolling groove punch. Detailed Implementation

[0023] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0024] See Figures 1-7 A front cover forming device for a drum washing machine includes a frame 1, a support frame 2 mounted on the frame 1, a lower top material block 3 mounted on the frame 1, and an upper top material block 4 mounted on the support frame 2 that can be lifted and lowered. A washing machine front cover 5 is disposed between the lower top material block 3 and the upper top material block 4. A straight hole punching assembly 6 for processing straight holes is mounted on the bottom side of the washing machine front cover 5 that can be lifted and lowered. A rolling assembly 7 for processing rolling is mounted on the top side of the washing machine front cover 5. The straight hole punching assembly 6 is connected to the frame 1, and the rolling assembly 7 is connected to the support frame 2.

[0025] The straight hole assembly 6 includes a hydraulic cylinder 61 mounted on the frame 1, a straight hole punch 62 with one end connected to the telescopic end of the hydraulic cylinder 61, and a positioning punch 63 at the other end of the straight hole punch 62 that passes through the center hole of the front cover 5 of the washing machine.

[0026] The rolling assembly 7 includes a second hydraulic cylinder 71 mounted on the support frame 2, and a rolling punch 72 connected to the telescopic end of the second hydraulic cylinder 71. The side of the rolling punch 72 is provided with a rolling punch groove 721.

[0027] The edge of the lower top material block 3 is provided with a baffle 31 for fixing the front cover 5 of the washing machine.

[0028] Several hydraulic cylinders 41 are arranged in an array on the support frame 2, and the upper material block 4 is mounted on the support frame 2 in a way that allows it to be raised and lowered via the hydraulic cylinders 41.

[0029] The ends of the straight hole punch 62, the positioning punch 63, and the rolling punch 72 are all provided with rounded corners.

[0030] The specific working process of this utility model:

[0031] See Figure 4With the washing machine front cover 5 fixed in place, the perforated, flat washing machine front cover 5 is first placed on the lower top material block 3. Under the action of the baffle 31, the washing machine front cover 5 and the lower top material block 3 are coaxial. Hydraulic cylinder three 41 is activated, and several hydraulic cylinders three 41 drive the upper top material block 4 down until it contacts the washing machine front cover 5. Then, hydraulic cylinder one 61 is activated, causing the positioning punch 63 on the straight hole punch 62 to pass through the opening of the washing machine front cover 5, further positioning the washing machine front cover 5. Then, hydraulic cylinder three 41 is activated again to drive the upper top material block 4 to extrude and form the washing machine front cover 5. See details below. Figure 5 The forming process of the washing machine front cover 5 is as follows: after forming, the side of the washing machine front cover 5 is pressed out with concave and convex surfaces.

[0032] See then Figure 6 During the process of punching a straight hole in the front cover 5 of the washing machine, hydraulic cylinder 61 continues to operate. Hydraulic cylinder 61 drives the straight hole punch 62 to continue rising. The front cover 5 of the washing machine is first pre-punched under the action of the positioning punch 63, and then punched out a straight hole under the action of the straight hole punch 62. The state after punching out the straight hole is shown in the figure. Figure 6 .

[0033] After the front cover 5 of the washing machine is punched with a straight hole, hydraulic cylinder 61 drives the straight hole punch 62 to descend and detach from the front cover 5. Then, hydraulic cylinder 71 is activated to drive the rounding punch 72 into the straight hole of the front cover 5. The rounding punch 72 continues to descend until the edge of the straight hole contacts the rounding groove 721. The straight hole is punched with a rolled edge by the rounding groove 721, completing the processing of the entire front cover 5 of the washing machine. The processed front cover 5 of the washing machine is shown in the figure. Figure 3 As shown, hydraulic cylinder 2 71 drives the rolling punch 72 to rise, and hydraulic cylinder 3 41 drives the upper material block 4 to rise. Finally, the washing machine front cover 5 is taken out and the next washing machine front cover 5 is processed.

[0034] Through the cooperation of the upper top material block 4, the lower top material block 3, the straight hole punch 62 in the straight hole punching assembly 6, and the rolling punch 72 in the rolling assembly 7, the side forming, punching and rolling of the washing machine front cover 5 are achieved in one step, avoiding the low forming efficiency caused by multiple changes of processing equipment, and the forming efficiency of the front cover of the drum washing machine is relatively high.

[0035] The positioning accuracy of the washing machine front cover 5 is improved by the positioning of the upper baffle 31 of the lower top material block 3 and the positioning punch 63, thereby making the processing and forming accuracy of the washing machine front cover 5 higher.

[0036] By setting the positioning punch 63, the straight hole of the washing machine front cover 5 is pre-processed and gradually enlarged, avoiding stress concentration when punching with the straight hole punch 62 directly. On the other hand, the positioning accuracy of the washing machine front cover 5 is improved.

[0037] The technical features of this utility model not described can be implemented by or by using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this utility model, and this utility model is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model should also be within the protection scope of this utility model.

Claims

1. A drum washing machine front cover forming device comprising a frame (1), a support frame (2) provided on the frame (1), characterized in that, It also includes a lower stripper block (3) arranged on the frame (1), an upper stripper block (4) arranged on the support frame (2) in a liftable manner, a washing machine front cover (5) arranged between the lower stripper block (3) and the upper stripper block (4), a straight hole punching assembly (6) arranged on the bottom side of the washing machine front cover (5) in a liftable manner for processing straight holes, a roll forming assembly (7) arranged on the top side of the washing machine front cover (5) in a liftable manner for processing roll forming, the straight hole punching assembly (6) is connected with the frame (1), and the roll forming assembly (7) is connected with the support frame (2).

2. The drum-type washing machine front cover molding apparatus according to claim 1, characterized in that, The straight hole punching assembly (6) comprises a hydraulic cylinder one (61) arranged on the frame (1), a straight hole punch (62) connected with the telescopic end of the hydraulic cylinder one (61) at one end, and the other end of the straight hole punch (62) is provided with a positioning punch (63) passing through the center hole of the washing machine front cover (5).

3. The drum-type washing machine front cover molding apparatus according to claim 2, characterized in that, The roll forming assembly (7) comprises a hydraulic cylinder two (71) arranged on the support frame (2), a roll forming punch (72) connected with the telescopic end of the hydraulic cylinder two (71), and a roll forming groove (721) is arranged in the side of the roll forming punch (72).

4. The drum-type washing machine front cover molding apparatus according to claim 3, characterized in that, The edge of the lower stripper block (3) is provided with a retaining table (31) for fixing the washing machine front cover (5).

5. The drum-type washing machine front cover molding apparatus according to claim 1, wherein The support frame (2) is provided with a plurality of hydraulic cylinders three (41) arranged in an array, and the upper stripper block (4) is arranged on the support frame (2) in a liftable manner through the hydraulic cylinders three (41).

6. The drum-type washing machine front cover molding apparatus according to claim 4, wherein The end of the straight hole punch (62), the positioning punch (63) and the roll forming punch (72) is provided with a round corner.

Images