Washing machine case rounding device

Abstract

A washing machine case rounding device is used to bend the washing machine case, comprising a machine body, an inner mold base connected to the machine body, and a rounding die connected to the machine body. The inner mold base is provided with an inner mold for controlling the bending angle of the case, the inner mold has an arc-shaped chamfered surface, and the inner mold is detachably connected to the inner mold base; the rounding die comprises an axis and a rolling cylindrical surface surrounding the axis, the rounding die is connected to a rotating shaft for driving the rounding die, and the rounding die has an initial rolling position and a terminal rolling position. At the initial rolling position, the rounding die is located above the inner mold, and the axis of the rounding die is aligned with the center of the chamfered cross section of the inner mold in the vertical direction. This device innovatively designs the rounding die for various specifications of the front and rear R angles of the washing machine impeller case, adopts a floating rounding mechanism to achieve rounding molding of different R angles, and designs a floating clamping mechanism and an angle rebound compensation mechanism to improve the rounding quality.

Description

Technical Field

[0001] The invention relates to a washing machine case rounding device. Background Art

[0002] Traditional washing machine case rounding devices have many unsolvable problems, including obvious indentations, warping, and poor flatness. Summary of the invention

[0003] In order to overcome the problems existing in the prior art, an object of the present invention is to provide a washing machine case rounding device which has high rounding quality and can realize rounding forming with different R angles.

[0004] In order to achieve the above objectives, the present invention provides a washing machine case rounding device for bending the washing machine case, comprising a machine body, an inner mold base connected to the machine body, and a rounding mold connected to the machine body, wherein the inner mold base is provided with an inner mold for controlling the bending angle of the case, the inner mold has an arc-shaped chamfered surface, and the inner mold is detachably connected to the inner mold base; the rounding mold comprises an axis and a rolling cylindrical surface surrounding the axis, the rounding mold is connected to a rotating shaft for driving the rounding mold, and the rounding mold has an initial rolling position and a terminal rolling position. In the initial rolling position, the rounding mold is located above the inner mold, and the axis of the rounding mold is vertically aligned with the center of the chamfered cross section of the inner mold.

[0005] Preferably, it comprises a rotating cylinder for driving the rotating shaft to rotate, and the rotating cylinder is connected to the rotating shaft.

[0006] Preferably, it comprises an up and down moving cylinder, and the up and down moving cylinder is connected to the rounding mold.

[0007] Preferably, it includes a height limiting column, which is connected to the up and down moving cylinder. When the rolling mold is located at the initial rolling position, the lower end surface of the rolling cylindrical surface and the inner mold are spaced apart by the thickness of the box body.

[0008] Preferably, it comprises a guide rail slider and a rounding floating cylinder connected to the guide rail slider, and the guide rail slider is respectively connected to the two side ends of the rounding mold.

[0009] Preferably, it comprises a pressing die, wherein the pressing die is arranged above the inner die, and the pressing die is parallel to the rounding die.

[0010] Preferably, the end of the rounding mold has a bearing for reducing tangential friction.

[0011] Preferably, the machine body is provided with an angle limiting column, and when the rounding mold rolls to the end rolling position, the angle limiting column abuts against the side surface of the box body.

[0012] Preferably, the inner mold base has a slot and a pressing block, the inner mold is inserted into the inner mold base from the end of the slot, and the pressing block locks the inner mold.

[0013] Preferably, the center angle of the arc-shaped chamfered surface of the inner mold 3 corresponding to the initial rolling position and the terminal rolling position is 120°.

[0014] Due to the adoption of the above technical solutions, this device innovatively designs the rolling mold for various specifications of the front and rear R angles of the washing machine impeller housing, and adopts a floating rolling mechanism to achieve rolling forming of different R angles. In order to improve the rolling quality, a floating clamping mechanism and an angle rebound compensation mechanism are designed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 and attached Figure 2 is a three-dimensional diagram of a washing machine case rounding device according to the present invention;

[0016] Attached Figure 3 A rounding assembly of the washing machine case rounding device according to the present invention;

[0017] Attached Figure 4 and attached Figure 5 The inner rounding mold of the washing machine case rounding device according to the present invention;

[0018] Attached Figure 6 A floating rounding mechanism of the washing machine case rounding device according to the present invention;

[0019] Attached Figure 7 A floating pressing mechanism of a washing machine case rounding device according to the present invention;

[0020] Attached Figure 8 The rebound compensation state of the washing machine cabinet rounding device according to the present invention (rounding rotation 100°);

[0021] Attached Fig. 9 The relative position between the R45 rounding mold and the rotation center of the washing machine case rounding device according to the present invention;

[0022] Attached Fig.10 The relative position between the R5 rounding mold and the rotation center of the washing machine case rounding device according to the present invention;

[0023] Attached Fig.11 This is the function of the front and rear angle limiting columns of the washing machine body rounding device according to the present invention. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0025] See attached Figure 1 To Attachment Figure 3 , attached Figure 1 and attached Figure 2 is a three-dimensional diagram of a washing machine case rounding device according to the present invention, Figure 3 A washing machine case rounding device for bending a washing machine case, comprising a machine body 1, an inner die seat 2 connected to the machine body 1, a rounding die 5 connected to the machine body 1, an up-and-down moving cylinder 8, a guide rail slider 10, a rounding floating cylinder 16 connected to the guide rail slider 10, and a pressing die 12, wherein the up-and-down moving cylinder 8 is connected to the rounding die 5, the guide rail slider 10 is respectively connected to the two side ends of the rounding die 5, the pressing die 12 is arranged above the inner die 3, and the pressing die 12 is parallel to the rounding die 5.

[0026] The inner mold base 2 is provided with an inner mold 3 for controlling the bending angle of the box body. The inner mold 3 has an arc-shaped chamfered surface and is detachably connected to the inner mold base 2; the inner mold base 2 has a slot 14 and a pressure block 15. The inner mold 3 is inserted into the inner mold base 2 from the end of the slot 14, and the pressure block 15 locks the inner mold 3.

[0027] The rolling die 5 includes an axis and a rolling cylindrical surface surrounding the axis, and the end of the rolling die 5 has a bearing 11 for reducing tangential friction. The rolling die 5 is connected to a rotating shaft 7 for driving the rolling die 5, and a rotating cylinder 6 is connected to the rotating shaft 7 for driving the rotating shaft 7 to rotate.

[0028] The rounding mold 5 has an initial rolling position and a terminal rolling position. In the initial rolling position, the rounding mold 5 is located above the inner mold 3, and the axis of the rounding mold 5 is vertically aligned with the center of the chamfered cross section of the inner mold 3. The center angle of the arc-shaped chamfered surface of the inner mold 3 corresponding to the initial rolling position and the terminal rolling position is 120°. The machine body 1 is provided with an angle limiting column 13 and a height limiting column 9. When the rounding mold 5 rolls to the terminal rolling position, the angle limiting column 13 abuts against the side of the box body, and the height limiting column 9 is connected to the up and down moving cylinder 8. When the rounding mold 5 is in the initial rolling position, the lower end surface of the rounding cylindrical surface is spaced from the inner mold 3 by the thickness of the box body. As shown in the attached figure Figure 1 and attached Figure 2 The up and down moving cylinder pushes the rolling assembly to the height limit column through the guide rail slider. The height limit column can be quickly changed to adjust the working height of the rolling assembly to ensure that the rotation center coincides with the R angle center of the inner mold. Figure 3The rounding assembly shown utilizes two rotating cylinders to push the rounding die to rotate around the center of the rotating shaft (rotation center).

[0029] Attached Figure 4 and attached Figure 5 This is the inner mold of the rounding device for the washing machine body according to the present invention; the inner mold is inserted from the groove on the side of the inner mold base, and after it is fixed in the fixed position, the pressing block is tightened to fix it. After rounding of this type of flattened parts, the R angle is generally required to be in the range of 5m to 45mm, so the corresponding inner mold R angle has a variety of specifications, and the inner molds with different R angles are quickly replaced by the groove pressing block. Since the workpiece feeding position is fixed, the upper surface of the inner mold is designed to be at the same height. The R angle of the inner mold is tangent to the upper surface, which results in different center heights of the R angle of the inner mold.

[0030] Attached Fig. 9 The relative position of the R45 rounding mold and the rotation center of the washing machine body rounding device according to the present invention is shown in FIG. Fig.10 The relative position of the R5 rounding mold and the rotation center of the washing machine body rounding device according to the present invention is shown in FIG. Fig.11 The function of the front and rear angle limit columns of the washing machine body rounding device according to the present invention. When the rotating cylinder is working, the rotation center coincides with the center of the inner mold. To achieve the rounding function, the cylindrical surface of the rounding mold needs to be tangent to the R angle of the inner mold (actual interval workpiece plate thickness), but for different R angle inner molds, the radial position of the rounding mold relative to the rotation center must change accordingly.

[0031] Attached Figure 6 The floating rolling mechanism of the washing machine body rounding device according to the present invention is driven by a rotating cylinder to rotate around the rotation center as a whole, and two rolling floating cylinders are used to guide the rounding mold to float radially through the guide rail slider, so that the rounding mold can always press the workpiece on the R angle surface of the lower mold. Bearings are installed at both ends of the rounding mold. During the rounding action, the rounding mold can roll on the surface of the workpiece, and almost no tangential friction force of the R angle is generated, thereby avoiding damage to the workpiece surface caused by relative sliding friction. The floating rolling mechanism can effectively improve the debugging and testing efficiency. Even if the R angle changes due to the later mold repair, or the rotation center deviates slightly from the R angle center of the inner mold during centering, as long as the position of the rounding mold is within the stroke of the floating cylinder, the rounding function can be achieved.

[0032] Attached Figure 7 It is a floating pressing mechanism of the washing machine case rounding device according to the present invention; since the flattened parts of the case are warped to different degrees, in order to ensure the quality of rounding and improve consistency, a pressing mechanism is designed to press the flattened parts close to the R angle position on the upper plane of the inner mold. Before the rounding action, two floating pressing cylinders push the pressing mold through guide columns and linear bearings to press the flattened parts. Similar to the floating rounding mechanism, the pressing mold can float up and down to adapt to a variety of R angle inner molds.

[0033] Attached Figure 8 This is the rebound compensation state of the washing machine cabinet rounding device according to the present invention (rounding rotation of 100°); due to the twisting and rebound deformation of the cabinet after rounding, when the rounding action rotation angle is 90°, the R angle of the cabinet after rounding is less than 90°. Therefore, the rounding angle is designed to be slightly larger than 90° for compensation, and the corresponding inner mold R angle arc angle can be uniformly designed to be 120°, which is sufficient for the general cabinet rebound compensation angle. The deformation rebound amount of cabinets of different materials and thicknesses is different. The final position of the rounding mold can be adjusted by replacing the angle limit column (quick change form), thereby adjusting the compensation angle. This device innovatively designs the rounding mold for various specifications of the front and rear R angles of the washing machine impeller cabinet, and adopts a floating rounding mechanism to achieve rounding molding of different R angles. In order to improve the rounding quality, a floating clamping mechanism and an angle rebound compensation mechanism are designed.

[0034] The above implementation modes are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A washing machine case rounding device, used for bending a washing machine case, characterized in that: include: Body (1); An inner mold base (2) connected to the machine body (1), the inner mold base (2) being provided with an inner mold (3) for controlling the bending angle of the box body, the inner mold (3) having an arc-shaped chamfered surface, and the inner mold (3) being detachably connected to the inner mold base (2); The rounding assembly comprises a rotating cylinder (6), a rotating shaft (7) and a rounding mold (5), wherein the rounding mold (5) comprises an axis and a rolling cylindrical surface surrounding the axis, wherein the rotating cylinder (6) is used to drive the rounding mold (5) to rotate around the rotating shaft (7), wherein the rounding mold (5) has an initial rolling position and an end rolling position, wherein at the initial rolling position, the rounding mold (5) is located above the inner mold (3), and the axis of the rounding mold (5) is perpendicular to the center of the chamfered cross section of the inner mold (3). Alignment; the rolling device also includes an up-and-down moving cylinder (8), a height limiting column (9) and a guide rail slider (10) arranged on the body (1), the up-and-down moving cylinder (8) is connected to the rolling mold (5), the up-and-down moving cylinder (8) is guided by the guide rail slider (10) to push the rolling component to the height limiting column (9) to quickly adjust the working height of the rolling component, when the rolling mold (5) is located in the initial rolling position, the lower end surface of the rolling cylindrical surface and the inner mold (3) are spaced apart by the thickness of the box body.

2. The washing machine case rounding device according to claim 1, characterized in that: It comprises a rolling floating cylinder (16) connected to the guide rail slider (10), the guide rail slider (10) is respectively connected to the two side ends of the rolling mold (5), and the two rolling floating cylinders (16) are used to guide the rolling mold (5) through the guide rail slider (10) to make radial floating.

3. The washing machine case rounding device according to claim 1, characterized in that: It comprises a pressing die (12), wherein the pressing die (12) is arranged above the inner die (3), and the pressing die (12) is parallel to the rounding die (5).

4. The washing machine case rounding device according to claim 1, characterized in that: The end of the rounding die (5) has a bearing (11) for reducing tangential friction.

5. The washing machine case rounding device according to claim 1, characterized in that: The rounding component is provided with an angle limiting column (13), and when the rounding mold (5) rolls to the end rolling position, the angle limiting column (13) abuts against the side surface of the box body.

6. The washing machine case rounding device according to claim 1, characterized in that: The inner mold base (2) has a slot (14) and a pressing block (15); the inner mold (3) is inserted into the inner mold base (2) from the end of the slot (14); and the pressing block (15) locks the inner mold (3).

7. The washing machine case rounding device according to claim 1, characterized in that: The center angle of the arc-shaped chamfered surface of the inner mold (3) corresponding to the initial rolling position and the terminal rolling position is 120°.

Images