Washing machine backboard folding lug stamping device

Abstract

The utility model discloses a washing machine back plate folding lug stamping device which comprises a limiting boss matched with a plate body, the limiting boss is arranged on a reference table board in a sliding mode, a bending female die is arranged at the position, corresponding to a folding lug on the plate body, of the reference table board, and the limiting boss slides to be close to the bending female die; an elastic positioning mechanism is arranged on the bending female die and used for limiting the sliding limit position of the limiting boss. A stamping mechanism is arranged above the bending female die in a lifting mode. The folding lug bending device meets high-precision bending of folding lugs of different sizes and specifications on a back plate of the washing machine, guarantees perfect attachment of the folding lugs and a shell during assembly, and solves the problem that the shell is scratched due to poor matching.

Description

Technical Field

[0001] The utility model relates to the technical field of washing machine processing, in particular to a folding ear punching device for a washing machine back plate. Background Art

[0002] In the assembly process of washing machines, in order to ensure a tight fit between the back panel and the housing, in addition to the use of bolts and nuts to lock, a folding ear bent at a certain angle is usually designed on the back panel to be locked with the corresponding slot on the housing, so that the back panel is firmly restrained on the back opening of the housing. However, due to the influence of bending accuracy, it is difficult to accurately control the bending position and angle of the folding ear, resulting in poor fit between the folding ear and the housing during assembly, which in turn causes scratches on the housing. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a folding ear punching device for a washing machine back panel, which can meet the high-precision bending requirements of folding ears of different sizes on the back panel of the washing machine, ensure the perfect fit between the folding ears and the shell during assembly, and solve the problem of shell scratches caused by poor fit.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model provides a washing machine back panel folding ear stamping device, comprising a limiting boss adapted to a plate body, wherein the limiting boss is slidably arranged on a reference table surface, and a bending die is arranged on the reference table surface corresponding to the folding ear on the plate body, and the limiting boss slides close to the bending die; an elastic positioning mechanism is arranged at the bending die for limiting the sliding limit position of the limiting boss; a stamping mechanism is arranged above the bending die for lifting and lowering.

[0005] Furthermore, the elastic positioning mechanism includes a positioning module adapted to the notches on both sides of the folded ears, the positioning module is slidably matched with the guide groove, and the positioning module is elastically connected to one end of the guide groove away from the limiting boss.

[0006] Furthermore, the two guide grooves are symmetrically arranged on both sides of the bending die, and the two are arranged parallel to each other.

[0007] Furthermore, the positioning module comprises a slider slidably matched with the guide groove, and a roller unit is rotatably provided on the slider.

[0008] Furthermore, the slider is provided with a slide rail that is slidably matched with the roller unit, and the slidably matched end of the roller unit is connected to an end of the slide rail away from the bending die through an elastic member.

[0009] Furthermore, the stamping mechanism includes a pressing block cooperating with the limiting boss, and the pressing block is provided with a punch slidably on an end surface of one side of the bending die, and the punch is aligned with the lifting arrangement of the bending die.

[0010] Beneficial effect: The utility model is a folding ear punching device for the back plate of a washing machine. The position of the plate body on the reference table is basically positioned by the limiting boss and the elastic positioning mechanism. The plate body is pushed close to the bending die by the limiting boss, and the final parking position of the plate body is limited by the elastic positioning mechanism, so that the folding ear on the plate body just corresponds to the bending die. After the plate body is pressed by the pressing block, the punch completes the stamping of the folding ear, and the precise positioning of the folding ear relative to the bending die is achieved. The elastic positioning mechanism can adapt to the clamping of the notches on both sides of the folding ears of multiple sizes, so as to meet the high-precision bending of folding ears of different sizes on the back plate of the washing machine, ensure the perfect fit between the folding ear and the shell during assembly, and solve the problem of shell scratches caused by poor matching. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0012] Attached Figure 2 This is a schematic structural diagram of an elastic positioning mechanism according to an embodiment of the utility model;

[0013] Attached Figure 3 The figure is a schematic structural diagram of a positioning module according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with the accompanying drawings.

[0015] As attached Figure 1-3 The described device for punching the folding ear of the back panel of a washing machine comprises a limiting boss 2 adapted to a plate body 1, wherein the limiting boss 2 is slidably arranged on a reference table 3, and a bending die 5 is arranged on the reference table 3 corresponding to a folding ear 11 on the plate body 1, and the limiting boss 2 slides close to the bending die 5; an elastic positioning mechanism 4 is arranged at the bending die 5 for limiting the sliding limit position of the limiting boss 2; and a stamping mechanism 6 is arranged above the bending die 5 for lifting and lowering.

[0016] The present solution is applied to the forming process of a laundry backboard with folding ears. Usually, after such a backboard is roughly punched out of a finished plate, two symmetrical notches are opened at the corresponding positions of the edge, thereby forming an ear-shaped sheet plate distinguished from the edge of the plate between the two notches. The ear is bent by stamping to form a folding ear, so that an angle exists between the folding ear and the plane where the edge of the backboard is located. During assembly, the folding ear is inserted into the matching slot on the shell, so as to ensure that the edge plane of the backboard can fit closely with the back plane of the shell.

[0017] This solution adapts the limiting boss to the shape structure with the folding ear position processed on the plate body, and then uses the elastic positioning mechanism to fit the grooves on both sides of the folding ear, so as to constrain the relative posture of the plate body on the reference platform, and ensure that the folding ear on the plate body is directly in the direction of the bending die. The limiting boss is then driven by the power device to slide close to the bending die, and the elastic positioning mechanism limits the sliding limit position to ensure that when the plate body is pushed to the limit position, the folding ear position just corresponds to the bending die, thereby ensuring accurate positioning. Finally, the stamping mechanism completes the stamping forming of the folding ear to ensure the perfect fit between the folding ear and the shell during assembly, and solves the problem of shell scratches caused by poor fit.

[0018] The elastic positioning mechanism 4 includes a positioning module 41 adapted to the notches on both sides of the folding ear 11, the positioning module 41 is slidably matched with the guide groove 42, and the positioning module 41 is elastically connected to the guide groove 42 away from one end of the limiting boss 2. The guide groove is arranged along the sliding direction of the limiting boss.

[0019] By elastically connecting the positioning module, when the plate is installed and placed relative to the limiting boss and the two positioning modules, the positioning module can be clamped relative to different groove depths. After the relative clamping, the elastic reset force generated by the stretching of the elastic part acts on the plate from the direction of the positioning module, so that the plate can be pressed against and limited relative to the limiting boss.

[0020] The two guide grooves 42 are symmetrically arranged on both sides of the bending die 5, and the two are arranged parallel to each other. The positioning module 41 includes a slider 411 that is slidably matched with the guide groove 42, and a roller unit 412 is rotatably arranged on the slider 411. Usually, the inside of the notch is processed into a rounded corner, so it is easier to achieve accurate positioning by using a roller to match the notch, and the roller can roll into the groove along the groove wall of the notch to avoid relative friction between the plate and the roller, thereby avoiding large wear on the roller after long-term use, thereby ensuring positioning accuracy and extending the service life of the positioning module.

[0021] The slider 411 is provided with a slide rail 413 that is slidably matched with the roller unit 412 , and the slidably matched end of the roller unit 412 is connected to an end of the slide rail 413 away from the bending die 5 through an elastic member.

[0022] Since the width dimensions of the folding ears are different, the two rollers can be elastically adapted to a certain extent in the width direction through elastic connection in the width direction, and when the rollers are inserted into the slots, relatively parallel pulling forces are provided to the plate on both sides to ensure that the folding ears are located in the middle of the bending die, thereby preventing the folding ears from deviating from the die position and thus preventing the folding ears from being pressed into a ring.

[0023] The punching mechanism 6 includes a pressing block 61 that cooperates with the limiting boss 2. The pressing block 61 is provided with a punch 62 that slides on the end surface of one side of the bending die 5. The punch 62 is aligned with the bending die 5 and is set up and down. The punch is adapted to the size of the bending die, and the bending die is designed according to the required bending angle. When punching, the pressing block and the limiting boss are first used to clamp the plate body to ensure that the relative position of the plate body is fixed, and then the punch is pressed down to complete the folding ear forming. The position accuracy and angle accuracy of the folding ear are further guaranteed.

[0024] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A washing machine back panel folding ear punching device, characterized in that: The invention comprises a limiting boss (2) adapted to a plate body (1), wherein the limiting boss (2) is slidably arranged on a reference table (3), wherein a bending die (5) is arranged on the reference table (3) corresponding to a folded ear (11) on the plate body (1), and the limiting boss (2) slides close to the bending die (5); an elastic positioning mechanism (4) is arranged at the bending die (5) for limiting the sliding limit position of the limiting boss (2); and a stamping mechanism (6) is arranged above the bending die (5) for lifting and lowering.

2. A washing machine back panel folding ear punching device according to claim 1, characterized in that: The elastic positioning mechanism (4) comprises a positioning module (41) adapted to the notches on both sides of the folded ear (11); the positioning module (41) is slidably matched with the guide groove (42); and the positioning module (41) is elastically connected to one end of the guide groove (42) away from the limiting boss (2).

3. A washing machine back panel folding ear punching device according to claim 2, characterized in that: The two guide grooves (42) are symmetrically arranged on both sides of the bending die (5), and are arranged parallel to each other.

4. A washing machine back panel folding ear punching device according to claim 3, characterized in that: The positioning module (41) comprises a slider (411) slidably matched with the guide groove (42), and a roller unit (412) is rotatably arranged on the slider (411).

5. A washing machine back panel folding ear punching device according to claim 4, characterized in that: The slider (411) is provided with a slide rail (413) that is slidably matched with the roller unit (412); the slidably matched end of the roller unit (412) is connected to an end of the slide rail (413) away from the bending die (5) via an elastic member.

6. A washing machine back panel folding ear punching device according to claim 5, characterized in that: The punching mechanism (6) comprises a pressing block (61) cooperating with the limiting boss (2); a punch (62) is slidably arranged on the end surface of one side of the bending die (5); and the punch (62) is aligned with the bending die (5) and is raised and lowered.

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