Washing machine inner barrel assembling and pressing device

Abstract

The utility model discloses a washing machine inner cylinder assembling and pressing device which comprises a center rotary table, the center rotary table is provided with two clamping units, a cylinder body is stacked and clamped between the two clamping units, the two clamping units are attached to two end covers of the cylinder body respectively, and the two clamping units are arranged on the center rotary table. The axis of a rotating shaft of the central turntable is overlapped with the central axis of the barrel; a center rotary table is arranged on the cylinder body, a hemming press-fit mechanism is arranged on one side of the center rotary table, the hemming press-fit mechanism is laterally attached to the cylinder body, hemming press-fit modules corresponding to the two end covers are arranged on the hemming press-fit mechanism respectively, and the hemming press-fit modules are used for guiding cover edges of the end covers to be inserted between the cylinder body and turned-over edges of the cylinder body and press-fit. The problem that a barrel structure is damaged due to the fact that two ends are synchronously pressed in a traditional pressing assembly mode is solved, the quality of finished barrel products is guaranteed, and meanwhile the barrel assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of washing machines, in particular to an inner drum assembly and pressing device for a washing machine. Background Art

[0002] The inner drum is the main component of the washing machine, which is generally composed of a drum body and end covers at both ends. The common washing machine drum assembly adopts end positive pressing, and the end cover is pressed against the port of the drum body by axial pressure. In this process, pressure will act on the entire drum body, including the drum body and the end cover. If pressure is applied to both ends of the drum body at the same time, it is very easy to exceed the pressure-bearing range of the drum body and cause deformation of the finished drum body. In order to ensure the quality of the drum body, the double ends are pressed together successively, which will reduce the efficiency of the drum body assembly. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a washing machine inner drum assembly and pressing device to solve the problem that the traditional pressing and assembling method causes damage to the drum structure by double-end synchronous pressing, thereby ensuring the quality of the finished drum and improving the assembly efficiency of the drum.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model provides a washing machine inner drum assembly and pressing device, comprising a central turntable, wherein the central turntable is provided with two clamping units, a drum body is stacked and clamped between the two clamping units, the two clamping units are respectively fitted with two end covers of the drum body, and the axis of the rotating shaft of the central turntable is arranged to coincide with the central axis of the drum body; a curling and pressing mechanism is provided on one side of the central turntable, the curling and pressing mechanism is laterally fitted against the drum body, and the curling and pressing mechanism is respectively provided with curling and pressing modules corresponding to the two end covers, and the curling and pressing modules are used to guide the cover edges of the end covers to be inserted between the drum body and its flange and pressed.

[0005] Furthermore, the curling and pressing module is provided with a curling roller and a pressing roller, the roller surface of the curling roller is provided with a curling die, and the roller surface of the pressing roller is provided with a pressing die; the curling roller and the pressing roller are arranged in sequence along the rotation direction of the central turntable.

[0006] Furthermore, the two curling rollers are respectively connected to the two ends of the first rotating shaft; and the two pressing rollers are respectively connected to the two ends of the second rotating shaft.

[0007] Furthermore, the first rotating shaft and the second rotating shaft are respectively connected to output ends of two driving cylinders, and the first rotating shaft and the second rotating shaft are both radially away from or close to the cylinder.

[0008] Furthermore, the curling die is provided with an arc-shaped curling guide surface, and the pressing die is provided as a flat annular groove.

[0009] Furthermore, the clamping surface of the clamping unit is provided with a limiting structure adapted to the end cover.

[0010] Beneficial effect: The utility model provides a washing machine inner drum assembly and pressing device, which realizes a crimping, buckling and pressing connection between the end cover and the drum body through lateral rolling limiting. The whole process only applies a restraining force to the cover edge of the end cover, while there is no excessive force on the drum body and the main body of the end cover, and thus has no effect on the quality of the finished drum structure; and the pressing operations of the two end covers and the drum body can be carried out simultaneously, which greatly improves the efficiency of the drum assembly. 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 The figure is a schematic diagram of the buckling structure after pressing together of an embodiment of the utility model. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings.

[0014] As attached Figure 1-2 The inner drum assembly and pressing device of a washing machine comprises a central turntable, the central turntable is provided with two clamping units 1, a drum body 2 is stacked and clamped between the two clamping units 1, the two clamping units 1 are respectively fitted with two end covers 21 of the drum body 2, and the axis of the rotating shaft of the central turntable is arranged to coincide with the central axis of the drum body 2; a curling and pressing mechanism is provided on one side of the central turntable, the curling and pressing mechanism is laterally fitted against the drum body 2, and the curling and pressing mechanism is respectively provided with curling and pressing modules 3 corresponding to the two end covers 21, and the curling and pressing module 3 is used to guide the cover edge of the end cover 21 to be inserted between the drum body 22 and its flange and pressed.

[0015] The present scheme assembles the relative positions of the various parts of the cylinder by means of clamping and fixing, and fixes them coaxially relative to the central turntable, so that the cylinder can be driven by the turntable to realize self-rotation. Before starting the turntable, the cylinder is approached laterally and pressed against by a curling and pressing mechanism, so that the cover edge of the end cover at the contact point is rolled inward and inserted into the pre-processed flange of the cylinder body port, and further flattened so that the curling edge of the end cover and the flange of the cylinder body are pressed tightly together at the place where they are buckled together. The entire cylinder is then driven to rotate by the turntable, so that the curling and pressing mechanism traverses the joint between the end cover and the cylinder body port, and finally the entire circumferential curling edge of the end cover is buckled with the flange of the cylinder body port, thereby achieving the purpose of fastening connection. During the entire process, lateral pressure is applied to the cylinder structure only during the initial abutment. In the subsequent rotation of the cylinder, high-precision limiters are mainly used as constraints, cooperating with the rotation of the cylinder itself to force the press fit between the curling edge and the flange, while having little impact on the main structure of the end cover and the cylinder body. While effectively achieving a tight connection between the end cover and the cylinder body, the shape quality of the finished cylinder is ensured.

[0016] The curling and pressing module 3 is provided with a curling roller 31 and a pressing roller 32, wherein the roller surface of the curling roller 31 is provided with a curling die, and preferably, the curling die is provided with an arc-shaped guide curling surface. When the cover edge of the end cover extends into the curling die, the cover edge contacts the guide curling surface, and as the curling roller continues to approach, the cover edge slides along the guide curling surface and naturally bends inward into a ring shape. At this time, the edge of the cover edge extends between the barrel and its flange, forming a tendency to buckle with each other.

[0017] The roller surface of the pressing roller 32 is provided with a pressing die. Preferably, the pressing die is provided as a flat annular groove. Specifically, the groove cross section is adapted to the outer contour of the flattened buckled structure, as shown in the attached Figure 2 As shown in , the buckling structure refers to the structure in which the curling edge and the turning edge are buckled and pressed together.

[0018] The hemming roller 31 and the pressing roller 32 are arranged in sequence along the rotation direction of the central turntable. The two hemming rollers 31 are respectively connected to the two ends of the first rotating shaft; the two pressing rollers 32 are respectively connected to the two ends of the second rotating shaft. The first rotating shaft and the second rotating shaft are respectively connected to the output ends of two driving cylinders, and the first rotating shaft and the second rotating shaft are both away from or close to the cylinder 2 in the radial direction of the cylinder 2.

[0019] The two driving cylinders can successively drive the hemming roller and the pressing roller to contact the cylinder body. The two can be set close to each other, which can effectively shorten the pressing processing time. The corresponding functional rollers of the upper and lower end caps are coaxially installed, which can make the pressing operation of the upper and lower end caps synchronous, greatly improving the production efficiency. Preferably, in order to ensure the force balance during the pressing process and further improve the pressing efficiency, two groups of hemming rollers and two groups of pressing rollers can be symmetrically arranged on both sides of the center turntable according to the above-mentioned layout. Each group only needs to complete the pressing operation within the semicircular range. The two sides work synchronously, which greatly improves the working efficiency, and the lateral forces offset each other, reducing the impact on the quality of the cylinder body itself.

[0020] The clamping surface of the clamping unit 1 is provided with a limiting structure adapted to the end cover 21. Preferably, the two clamping units are arranged in vertical alignment, and both adopt a disc-shaped block structure. The clamping unit located on the lower side is connected to the output end of the rotating motor, and the clamping unit located on the upper side is connected to the output end of the lifting cylinder, and is sleeved through bearings to ensure that the cylinder can be rotated after clamping. A limiting structure is correspondingly arranged on the clamping surface, and the limiting structure can be a limiting groove or a limiting protrusion, etc., which is conducive to the positioning and assembly of the cylinder, and cooperates with the adaptation structure between the end cover and the barrel port itself, which can ensure the stability of the cylinder structure after clamping, and ensure that the cylinder structure will not be displaced or deformed in the subsequent curling and pressing operation, thereby ensuring the quality of the final cylinder product.

[0021] 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 inner drum assembly and pressing device, characterized in that: The invention comprises a central turntable, wherein the central turntable is provided with two clamping units (1), a cylinder (2) is stacked and clamped between the two clamping units (1), the two clamping units (1) are respectively fitted with two end covers (21) of the cylinder (2), and the axis of the rotating shaft of the central turntable is arranged to coincide with the central axis of the cylinder (2); a curling and pressing mechanism is arranged on one side of the central turntable, the curling and pressing mechanism is laterally fitted with the cylinder (2), and the curling and pressing mechanism is respectively provided with curling and pressing modules (3) corresponding to the two end covers (21), and the curling and pressing modules (3) are used to guide the cover edges of the end covers (21) to be inserted between the cylinder body (22) and its flange and press them.

2. A washing machine inner drum assembly and pressing device according to claim 1, characterized in that: The curling and pressing module (3) is provided with a curling roller (31) and a pressing roller (32); the roller surface of the curling roller (31) is provided with a curling die, and the roller surface of the pressing roller (32) is provided with a pressing die; the curling roller (31) and the pressing roller (32) are arranged in sequence along the rotation direction of the central turntable.

3. A washing machine inner drum assembly and pressing device according to claim 2, characterized in that: The two hemming rollers (31) are respectively connected to the two ends of the first rotating shaft; the two pressing rollers (32) are respectively connected to the two ends of the second rotating shaft.

4. A washing machine inner drum assembly and pressing device according to claim 3, characterized in that: The first rotating shaft and the second rotating shaft are respectively connected to the output ends of two driving cylinders, and the first rotating shaft and the second rotating shaft are both radially away from or close to the cylinder (2).

5. The washing machine inner drum assembly and pressing device according to claim 4, characterized in that: The curling die is provided with an arc-shaped curling guide surface, and the pressing die is provided as a flat annular groove.

6. A washing machine inner drum assembly and pressing device according to claim 5, characterized in that: The clamping surface of the clamping unit (1) is provided with a limiting structure adapted to the end cover (21).

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