Expanding mechanism and processing equipment for outer drum ring of washing machine

Abstract

The utility model belongs to washing machine production technical field, specifically discloses a kind of expansion mechanism and processing equipment of washing machine outer cylinder ring.The utility model provides the expansion mechanism of washing machine outer cylinder ring, the two sides of third expansion mould are respectively slidably connected with second expansion mould along first direction, third expansion mould can do extend movement or retract movement in the radial direction of expansion mechanism, when third expansion mould extends, and first expansion mould and second expansion mould form the expansion surface compatible with the inner side wall of washing machine outer cylinder, only set up one expansion mould action is formed expansion surface, driving structure is simple, the roundness deviation of outer cylinder ring after forming is small, and third expansion mould slides along first direction and realizes along the radial direction of expansion mechanism and does extend movement or retract movement, while realizing expansion, the activity space of third expansion mould is reduced, and then the occupied space of expansion mechanism is reduced.

Description

Technical Field

[0001] This utility model relates to the field of washing machine manufacturing technology, and in particular to an expansion mechanism and processing equipment for the outer drum ring of a washing machine. Background Technology

[0002] The outer drum ring of a washing machine is a core component of a drum washing machine. The outer drum ring is made of stainless steel and is welded to the front flange after forming to finally form the outer drum assembly. The outer drum has a simple shape, low production cost, and stronger structural rigidity.

[0003] After the outer drum ring is formed, its roundness needs to be corrected. In existing technology, the expansion device of the washing machine inner drum has multiple segmented molds, each matched with a hydraulic drive mechanism or a gear-driven mechanism. The hydraulic drive mechanism or gear-driven mechanism drives the segmented molds to complete the expansion of the inner drum. During the expansion process, there are problems such as asynchronous movement of multiple segmented molds and large deviations in the roundness of the formed workpiece. Utility Model Content

[0004] The purpose of this utility model is to provide an expansion mechanism and processing equipment for the outer drum ring of a washing machine, which reduces the roundness deviation of the outer drum ring after processing by the expansion mechanism and improves the processing quality of the outer drum.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] In a first aspect, a forming mechanism for the outer drum of a washing machine is provided, comprising a base plate, a first forming mold, a second forming mold, and a third forming mold. The first forming mold and the second forming mold are fixedly connected to the base plate, and the third forming mold is movably disposed on the base plate. The second forming mold is provided on both sides of the third forming mold, and the two sides of the third forming mold are slidably connected to the corresponding second forming mold along a first direction. The third forming mold can extend or retract in the radial direction of the forming mechanism. When the third forming mold extends, it forms an expanding surface with the first forming mold and the second forming mold that is adapted to the inner wall of the outer drum of the washing machine. The first direction is set at an angle to the horizontal direction.

[0007] As an optional technical solution for the expansion mechanism of the outer drum ring of the washing machine mentioned above, the third expansion mold includes an expansion plate and an expansion drive component. The two sides of the expansion plate are respectively slidably connected to the corresponding sides of the second expansion mold along a first direction. The expansion drive component is used to drive the expansion plate to slide along the first direction, so that the expansion plate extends in the radial direction of the expansion mechanism, so that the expansion plate forms the expansion surface with the first expansion mold and the second expansion mold. Alternatively, the expansion drive component is used to drive the expansion plate to slide along the first direction, so that the expansion plate retracts in the radial direction of the expansion mechanism.

[0008] As an optional technical solution for the expansion mechanism of the outer drum ring of the washing machine described above, the third expansion mold further includes a foot plate and a push plate. The foot plate is fixedly connected to the expansion plate, and the foot plate and the push plate are slidably connected along a second direction. The push plate has a groove on the side opposite to the foot plate, and the groove extends radially along the expansion mechanism. The expansion drive is fixed on the base, and the drive end of the expansion drive is inserted into the groove and contacts the foot plate. The drive end of the expansion drive extends out to press against the foot plate, so that the expansion plate slides along the first direction, and the expansion plate extends radially in the expansion mechanism.

[0009] As an optional technical solution for the expansion mechanism of the outer drum ring of the washing machine mentioned above, the outer surfaces of the first expansion mold, the second expansion mold and the third expansion mold are all arc surfaces, and the first expansion mold, the second expansion mold and the third expansion mold are spliced ​​together to form the expansion surface;

[0010] And / or, the outer surfaces of the first expansion mold, the second expansion mold and the third expansion mold are respectively covered with flexible parts.

[0011] Secondly, a processing device for the outer drum ring of a washing machine is provided, comprising:

[0012] Base;

[0013] The first stamping mechanism includes a stamping die unit and a stamping drive unit. The stamping drive unit is fixedly mounted on the base, and the stamping die unit is slidably mounted on the base along a second direction. The stamping drive unit is connected to the stamping die unit.

[0014] A second stamping mechanism is fixed to the base and spaced apart from the first stamping mechanism along a second direction. The second stamping mechanism includes a stamping punch unit; and

[0015] The aforementioned bulging mechanism for the outer drum of the washing machine has a base plate that is slidably connected to the base along a second direction. The base plate is provided with a clearance opening extending along the second direction. The stamping punch unit passes through the clearance opening. The first bulging die, the second bulging die, and the third bulging die are arranged around the stamping punch unit. The first bulging die is arranged between the stamping punch unit and the stamping die unit. The first bulging die is provided with a through opening.

[0016] After the outer tub ring of the washing machine is fitted onto the forming mechanism and the forming mechanism forms the outer tub ring of the washing machine, the stamping drive unit is used to drive the stamping die unit to move toward the stamping punch unit in the second direction, so that the stamping die unit pushes the forming mechanism to move in the second direction. The stamping punch unit passes through the through hole and cooperates with the stamping die unit to stamp the outer tub ring of the washing machine fitted onto the forming mechanism.

[0017] The second direction is the horizontal direction.

[0018] As an optional technical solution for the processing equipment of the outer drum ring of the washing machine mentioned above, the stamping punch unit is provided with an elastic reset member on the side facing the stamping die unit. When the stamping die unit pushes the bulging mechanism to move in the second direction, the elastic reset member is configured to abut against the inner wall of the first bulging mold and compress and store energy. When the stamping die unit moves away from the stamping punch unit in the second direction, the elastic reset member is configured to release energy and drive the bulging mechanism to move in the second direction toward the stamping die unit.

[0019] As an optional technical solution for the processing equipment of the outer drum ring of the washing machine mentioned above, the base is provided with a first limiting stop, and the expansion mechanism is provided with a stop block. The stop block abuts against the first limiting stop to limit the distance that the expansion mechanism moves toward the stamping die unit in the second direction.

[0020] As an optional technical solution for the processing equipment of the outer drum ring of the washing machine mentioned above, the stamping die unit includes a stamping die base, which is slidably connected to the base along a second direction. The stamping die base has a pressing surface on the side facing the stamping punch unit. The pressing surface is adapted to the outer wall of the bulging mechanism. The pressing surface is provided with a bulge stamping die and a drain outlet stamping die. The bulge stamping die and the drain outlet stamping die are used to cooperate with the stamping punch unit to stamp bulges and drain outlets on the outer drum of the washing machine.

[0021] As an optional technical solution for the processing equipment of the outer drum ring of the washing machine mentioned above, the stamping punch unit includes a stamping punch seat, which is fixed on the base. The stamping punch seat has a bulge stamping punch and a drain outlet stamping punch on the side facing the stamping die unit. The bulge stamping punch and the drain outlet stamping punch are used to cooperate with the stamping die unit to stamp bulges and drain outlets on the outer drum of the washing machine.

[0022] As an optional technical solution for the processing equipment of the outer drum ring of the washing machine mentioned above, the stamping die unit is provided with a first oil nozzle, which is configured to spray lubricating oil onto the stamping area of ​​the outer wall of the outer drum ring of the washing machine sleeved on the expansion mechanism.

[0023] And / or, the top of the forming mechanism facing the stamping die unit is provided with a second oil nozzle, the second oil nozzle being configured to spray lubricating oil onto the stamping area of ​​the inner wall of the washing machine outer drum ring sleeved on the forming mechanism.

[0024] Beneficial effects:

[0025] The present invention provides an expansion mechanism for the outer drum ring of a washing machine. A first expansion mold and a second expansion mold are fixedly arranged, while a third expansion mold is movably arranged. The two sides of the third expansion mold are slidably connected to the second expansion mold along a first direction. The third expansion mold can extend or retract in the radial direction of the expansion mechanism. When the third expansion mold extends, it forms an expansion surface that matches the inner wall of the outer drum of the washing machine with the first and second expansion molds. Only one expansion mold is needed to form the expansion surface. The driving structure is simple, and the roundness deviation of the outer drum ring after forming is small. Furthermore, the third expansion mold slides along the first direction and extends or retracts in the radial direction of the expansion mechanism. While achieving expansion, the activity space of the third expansion mold is reduced, thereby reducing the space occupied by the expansion mechanism.

[0026] The present invention provides a processing equipment for the outer drum ring of a washing machine. The outer drum ring is fitted onto the outside of the expansion mechanism, which is used to expand the outer drum ring. The stamping drive unit drives the stamping die unit to move towards the stamping punch unit in a second direction, so that the stamping die unit pushes the expansion mechanism to move in the second direction. The stamping punch unit passes through the through-hole and cooperates with the stamping die unit to stamp the expanded outer drum ring of the washing machine. The two processes of expansion and stamping of the outer drum ring are realized in one processing station, saving the intermediate step of transferring the outer drum ring of the washing machine, simplifying the production process, improving production efficiency, and reducing production costs. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the expansion mechanism provided in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the sliding connection between the third expansion mold and the second expansion mold provided in this embodiment of the utility model;

[0029] Figure 3 This is a schematic diagram of the bottom structure of the processing equipment for the outer drum ring of a washing machine provided in this embodiment of the utility model;

[0030] Figure 4 This is a partial structural schematic diagram of the expansion mechanism provided in an embodiment of the present utility model;

[0031] Figure 5 This is a schematic diagram of the bottom structure of the expansion mechanism provided in this embodiment of the utility model;

[0032] Figure 6 This is an isometric view of the overall structure of the processing equipment for the outer drum ring of a washing machine provided in this embodiment of the utility model;

[0033] Figure 7 This is a schematic diagram of the cooperation between the second stamping mechanism and the base plate provided in this embodiment of the utility model;

[0034] Figure 8 This is a front view of the processing equipment for the outer drum ring of a washing machine provided in this embodiment of the utility model.

[0035] In the picture:

[0036] 1. Base; 2. First stamping mechanism; 3. Second stamping mechanism; 4. Expansion mechanism; 5. First fuel injector; 6. Second fuel injector;

[0037] 11. First limit stop;

[0038] 21. Stamping die unit; 211. Stamping die base; 212. Pressing surface; 213. Bulging stamping die; 214. Drainage outlet stamping die; 22. Stamping drive unit;

[0039] 31. Stamping punch unit; 311. Stamping punch base; 32. Elastic reset component;

[0040] 41. Through-hole; 42. Base plate; 421. Clearance opening; 43. First expansion mold; 44. Second expansion mold; 45. Third expansion mold; 451. Expansion plate; 452. Expansion drive component; 453. Foot plate; 454. Push plate; 455. Groove; 46. Stop block. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0042] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0045] like Figure 1 and Figure 2As shown, this embodiment provides an expansion mechanism for the outer drum of a washing machine. The expansion mechanism 4 includes a base plate 42, a first expansion mold 43, a second expansion mold 44, and a third expansion mold 45. The first expansion mold 43 and the second expansion mold 44 are fixedly connected to the base plate 42. The third expansion mold 45 is movably mounted on the base plate 42. The second expansion mold 44 is provided on both sides of the third expansion mold 45, and the two sides of the third expansion mold 45 are slidably connected to the corresponding second expansion mold 44 along a first direction. The third expansion mold 45 can extend or retract radially in the expansion mechanism 4. When the third expansion mold 45 extends, it forms an expansion surface with the first expansion mold 43 and the second expansion mold 44 that matches the inner wall of the outer drum ring of the washing machine, thus expanding the outer drum ring and ensuring its roundness meets production requirements. When the third expansion mold 45 retracts, the outer diameter of the expansion mechanism 4 decreases, facilitating the fitting of the outer drum ring of the washing machine onto the outside of the expansion mechanism 4. The first direction is set at an angle to the horizontal direction.

[0046] In this embodiment, the first expansion mold 43 and the second expansion mold 44 of the expansion mechanism 4 are fixedly arranged, and the third expansion mold 45 is movably arranged. The two sides of the third expansion mold 45 are respectively slidably connected to the second expansion mold 44 along the first direction. The third expansion mold 45 can extend or retract in the radial direction of the expansion mechanism 4. When the third expansion mold 45 extends, it forms an expansion surface that matches the inner wall of the outer drum of the washing machine with the first expansion mold 43 and the second expansion mold 44. Only one expansion mold is needed to form the expansion surface. The driving structure is simple, and the roundness deviation of the outer drum ring after molding is small. The third expansion mold 45 slides along the first direction and extends or retracts in the radial direction of the expansion mechanism 4. While realizing expansion, the activity space of the third expansion mold 45 is reduced, thereby reducing the space occupied by the expansion mechanism 4.

[0047] Optionally, the outer surfaces of the first expansion mold 43, the second expansion mold 44, and the third expansion mold 45 are all arc surfaces, and the first expansion mold 43, the second expansion mold 44, and the third expansion mold 45 are spliced ​​together to form an expansion surface.

[0048] For example, one first expansion mold 43, two second expansion molds 44, and one third expansion mold 45 are provided. The central angle corresponding to the arc surface of each expansion mold is 90°. The four expansion molds are spliced ​​together to form a circular expansion surface. The third expansion mold 45 is arranged opposite to the first expansion mold 43, and the two second expansion molds 44 are arranged opposite to each other and placed between the first expansion mold 43 and the third expansion mold 45.

[0049] like Figures 2 to 4As shown, the third expansion mold 45 includes an expansion plate 451 and an expansion drive member 452. The two sides of the expansion plate 451 are slidably connected to the corresponding sides of the second expansion mold 44 along a first direction, enabling the expansion plate 451 to slide along this direction. The expansion drive member 452 drives the expansion plate 451 to slide along the first direction, causing it to extend radially in the expansion mechanism 4. Alternatively, the expansion plate 451 can move upwards along the first direction to form an expansion surface with the first expansion mold 43 and the second expansion mold 44. Or, the expansion drive member 452 can drive the expansion plate 451 to slide along the first direction, causing it to retract radially in the expansion mechanism 4. In other words, the expansion drive member 452 drives the expansion plate 451 to move downwards along the first direction, which is an upward direction inclined towards the outside of the expansion mechanism 4. This third expansion mold 45 has a simple structure, single movement, and is easy to control.

[0050] Optionally, one of the expansion plate 451 and the second expansion mold 44 is provided with a slider, and the other is provided with a slide rail, the slide rail extending along a first direction, and the slider is slidably disposed on the slide rail.

[0051] like Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, the third expansion mold 45 further includes a foot plate 453 and a push plate 454. The foot plate 453 is fixedly connected to the expansion plate 451, and the foot plate 453 and the push plate 454 are slidably connected along a second direction. The push plate 454 has a groove 455 on the side opposite to the foot plate 453, and the groove 455 extends along the second direction. The expansion drive member 452 is fixed on the base plate 42, and the drive end of the expansion drive member 452 is inserted into the groove 455 and contacts the foot plate 453. The drive end of the expansion drive member 452 extends out to press against the foot plate 453, causing the expansion plate 451 to slide along the first direction, so that the expansion plate 451 makes an extension movement in the radial direction of the expansion mechanism 4. When the expansion drive member 452 applies a driving force to the foot plate 453, the foot plate 453 can slide relative to the push plate 454 along the second direction to accommodate the expansion plate 451 sliding along the first direction, ensuring that the expansion plate 451 does not jam when sliding along the first direction. The groove 455 cooperates with the driving end of the expansion drive 452 to limit the extension stroke of the expansion plate 451, ensuring that the third expansion mold 45 forms a circular expansion surface with the first expansion mold 43 and the second expansion mold 44. The second direction is the horizontal direction.

[0052] Optionally, multiple foot plates 453 are provided, each fixedly connected to the expansion plate 451, and each slidingly connected to the push plate 454 along the second direction. The push plate 454 has grooves 455 corresponding to the foot plates 453, and each groove 455 is provided with an expansion drive component 452 to increase the driving force during the expansion of the third expansion mold 45. The expansion drive component 452 can be a cylinder or a linear motor, and the connection structure is simple.

[0053] The outer surfaces of the first expansion mold 43, the second expansion mold 44, and the third expansion mold 45 are respectively covered with flexible parts, which can be rubber or silicone, to ensure that the inner surface of the outer drum ring of the washing machine is not scratched.

[0054] like Figure 6 and Figure 7 As shown, this embodiment provides a processing device for the outer drum ring of a washing machine, which is used to form the outer drum ring of the washing machine after expansion molding, so that the roundness of the outer drum ring of the washing machine meets the production requirements, and to stamp on the outer drum ring of the washing machine. Optionally, bulges and drain outlets can be formed on the outer drum ring of the washing machine by stamping.

[0055] Specifically, the processing equipment for the outer drum of the washing machine includes a base 1, a first stamping mechanism 2, a second stamping mechanism 3, and the aforementioned bulging mechanism 4 for the outer drum of the washing machine. The first stamping mechanism 2 includes a stamping die unit 21 and a stamping drive unit 22. The stamping drive unit 22 is fixedly mounted on the base 1, and the stamping die unit 21 is slidably mounted on the base 1 along a second direction. The stamping drive unit 22 is connected to the stamping die unit 21. The second stamping mechanism 3 is fixed on the base 1 and spaced apart from the first stamping mechanism 2 along the second direction. The second stamping mechanism 3 includes a stamping punch unit 31. The base plate 42 of the forming mechanism 4 is slidably connected to the base 1 along the second direction. The base plate 42 is provided with a clearance opening 421 extending along the second direction. The stamping punch unit 31 passes through the clearance opening 421. The first forming die 43, the second forming die 44, and the third forming die 45 are arranged around the stamping punch unit 31. The first forming die 43 is arranged between the stamping punch unit 31 and the stamping die unit 21. The first forming die 43 is provided with a through opening 41. After the outer tub ring of the washing machine is fitted onto the forming mechanism 4 and the forming mechanism 4 forms the outer tub ring of the washing machine, the stamping drive unit 22 is used to drive the stamping die unit 21 to move toward the stamping punch unit 31 along the second direction, so that the stamping die unit 21 pushes the forming mechanism 4 to move along the second direction. The stamping punch unit 31 passes through the through opening 41 and cooperates with the stamping die unit 21 to stamp the outer tub ring of the washing machine fitted onto the forming mechanism 4.

[0056] The outer drum ring of the washing machine is sleeved on the outside of the expansion mechanism 4. The expansion mechanism 4 is used to expand the outer drum ring of the washing machine. The stamping drive unit 22 drives the stamping die unit 21 to move towards the stamping punch unit 31 in the second direction, so that the stamping die unit 21 pushes the expansion mechanism 4 to move in the second direction. The stamping punch unit 31 passes through the through hole 41 and cooperates with the stamping die unit 21 to stamp the expanded outer drum ring of the washing machine. The two processes of expansion and stamping of the outer drum ring are realized in one processing station, saving the intermediate step of transferring the outer drum ring of the washing machine, simplifying the production process, improving production efficiency, and reducing production costs.

[0057] The second direction is the horizontal direction, specifically the reciprocating direction in which the expansion mechanism 4 slides relative to the base 1.

[0058] For example, one first bulging die 43, two second bulging dies 44, and one third bulging die 45 are provided. The central angle corresponding to the arc surface of each bulging die is 90°. The four bulging dies are spliced ​​together to form a circular bulging surface. The first bulging die 43 is disposed between the stamping die unit 21 and the stamping punch unit 31. The third bulging die 45 is disposed opposite to the first bulging die 43. The two second bulging dies 44 are disposed opposite to each other and between the first bulging die 43 and the third bulging die 45. When the third bulging die 45 extends or retracts, it will not interfere with the stamping punch unit 31.

[0059] See also Figure 6 As shown, in some embodiments, the stamping punch unit 31 is provided with an elastic reset member 32 on the side facing the stamping die unit 21. When the stamping die unit 21 pushes the expansion mechanism 4 and moves along the second direction, the elastic reset member 32 is configured to abut against the inner wall of the first expansion mold 43 and compress and store energy. When the stamping die unit 21 moves away from the stamping punch unit 31 along the second direction, the elastic reset member 32 is configured to release energy and drive the expansion mechanism 4 to move along the second direction toward the stamping die unit 21, so that the expansion mechanism 4 is reset and the stamping punch unit 31 retracts into the expansion mechanism 4. This reset structure is simple. Optionally, the elastic reset member 32 can be a gas spring, which is not specifically limited here. Multiple elastic reset members 32 can be provided, and the position of the elastic reset members 32 is not specifically limited here.

[0060] See also Figure 3 As shown, optionally, the base 1 is provided with a first limiting stop 11, and the expansion mechanism 4 is provided with a stop block 46. The stop block 46 abuts against the first limiting stop 11 to limit the distance that the expansion mechanism 4 moves toward the stamping die unit 21 in the second direction, so as to avoid the problem that the inertial force generated under the action of the elastic reset member 32 causes the reset of the expansion mechanism 4 to exceed the preset position, or even causes the expansion mechanism 4 to collide with the stamping die unit 21.

[0061] Combination Figure 6 and Figure 7 As shown, in some embodiments, the stamping die unit 21 includes a stamping die base 211, which is slidably connected to the base 1 along the second direction. The stamping die base 211 has a pressing surface 212 on the side facing the stamping punch unit 31. The pressing surface 212 is adapted to the outer wall of the bulging mechanism 4. The pressing surface 212 is provided with a bulging stamping die 213 and a drain outlet stamping die 214. The bulging stamping die 213 and the drain outlet stamping die 214 are used to cooperate with the stamping punch unit 31 to stamp bulges and drain outlets on the outer drum of the washing machine. The stamping drive unit 22 drives the stamping die holder 211 to move toward the stamping punch unit 31 in the second direction. The pressing surface 212 of the stamping die holder 211 first fits against the outer wall of the expansion mechanism 4, and then the pushing force of the stamping drive unit 22 is transmitted to the expansion mechanism 4, causing the expansion mechanism 4 to slide in the second direction. As the expansion mechanism 4 slides, the stamping punch unit 31 gradually passes through the through opening 41 and closes with the bulge stamping die 213 and the drain outlet stamping die 214 to stamp a bulge and a drain outlet on the outer drum ring of the washing machine.

[0062] Optionally, the sewage outlet stamping die 214 is embedded in the lower middle part of the bulge stamping die 213, and the stamping drive unit 22 is a hydraulic cylinder or a pneumatic cylinder, which is not specifically limited here.

[0063] In some embodiments, the stamping punch unit 31 includes a stamping punch seat 311, which is fixed to the base 1. The stamping punch seat 311 has a bulge stamping punch and a drain outlet stamping punch on the side facing the stamping die unit 21. The bulge stamping punch and the drain outlet stamping punch are used to cooperate with the stamping die unit 21 to stamp a bulge and a drain outlet on the outer drum of the washing machine. Corresponding to the bulge stamping die 213 and the drain outlet stamping die 214, the drain outlet stamping punch is located in the lower middle part of the bulge stamping punch. During actual stamping, the bulge stamping die 213 and the bulge stamping punch are closed together, and the drain outlet stamping die 214 and the drain outlet stamping punch are closed together, thereby stamping a bulge and a drain outlet on the outer drum of the washing machine.

[0064] like Figure 8 As shown, in some embodiments, the stamping die unit 21 is provided with a first oil nozzle 5. The first oil nozzle 5 is configured to spray lubricating oil onto the area to be stamped on the outer wall of the washing machine outer drum ring sleeved on the forming mechanism 4, so as to improve the ductility of the washing machine outer drum ring during stamping and avoid cracks or other defects during stamping. During the process of placing the washing machine outer drum ring from top to bottom into the forming mechanism 4, the first oil nozzle 5 sprays lubricating oil onto the area to be stamped on the outer wall of the washing machine outer drum ring.

[0065] The top of the forming mechanism 4 facing the stamping die unit 21 is provided with a second oil nozzle 6. The second oil nozzle 6 is configured to spray lubricating oil onto the area to be stamped on the inner wall of the washing machine outer drum ring sleeved on the forming mechanism 4, so as to improve the ductility of the washing machine outer drum ring during stamping and avoid cracks during stamping. During the process of placing the washing machine outer drum ring into the forming mechanism 4 from top to bottom, the second oil nozzle 6 sprays lubricating oil onto the area to be stamped on the inner wall of the washing machine outer drum ring.

[0066] The main steps involved in machining the outer drum ring of a washing machine are as follows:

[0067] Step 1: Retract the third expansion mold 45 of the expansion mechanism 4 to reduce the outer diameter of the expansion mechanism 4. Place the outer drum ring of the washing machine onto the outside of the expansion mechanism 4. As the outer drum ring of the washing machine is placed into the expansion mechanism 4 from top to bottom, the first oil nozzle 5 sprays lubricating oil onto the area to be stamped on the outer wall of the outer drum ring of the washing machine, and / or the second oil nozzle 6 sprays lubricating oil onto the area to be stamped on the inner wall of the outer drum ring of the washing machine.

[0068] Step 2: Control the third expansion mold 45 to extend and form an expansion surface with the first expansion mold 43 and the second expansion mold 44 to achieve the expansion of the outer drum ring of the washing machine.

[0069] Step 3: Control the stamping drive unit 22 to drive the stamping die unit 21 to move toward the stamping punch unit 31, and make the stamping die unit 21 push against the expansion mechanism 4, and the expansion mechanism 4 moves along the second direction.

[0070] Step 4: The stamping punch unit 31 passes through the through hole 41 and cooperates with the stamping die unit 21 to stamp the outer drum ring of the washing machine that is sleeved on the expansion mechanism 4, and stamps a bulge and a drain outlet on the outer drum ring of the washing machine.

[0071] Step 5: Control the stamping drive unit 22 to drive the stamping die unit 21 to move away from the stamping punch unit 31. The stamping die unit 21 no longer pushes against the expansion mechanism 4. Under the action of the elastic reset member 32, the expansion mechanism 4 moves toward the stamping die unit 21 to achieve reset. The stamping punch unit 31 retracts into the expansion mechanism 4.

[0072] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An expansion mechanism for the outer drum ring of a washing machine, characterized in that, The device includes a base plate (42), a first expansion mold (43), a second expansion mold (44), and a third expansion mold (45). The first expansion mold (43) and the second expansion mold (44) are fixedly connected to the base plate (42). The third expansion mold (45) is movably disposed on the base plate (42). The second expansion mold (44) is provided on both sides of the third expansion mold (45), and the two sides of the third expansion mold (45) are slidably connected to the corresponding second expansion mold (44) along a first direction. The third expansion mold (45) can extend or retract in the radial direction of the expansion mechanism (4). When the third expansion mold (45) extends, it forms an expansion surface with the first expansion mold (43) and the second expansion mold (44) that is adapted to the inner wall of the outer drum of the washing machine. The first direction is set at an angle to the horizontal direction.

2. The expanding mechanism for the outer drum ring of the washing machine according to claim 1, characterized in that, The third expansion mold (45) includes an expansion plate (451) and an expansion drive (452). The two sides of the expansion plate (451) are respectively slidably connected to the corresponding sides of the second expansion mold (44) along a first direction. The expansion drive (452) is used to drive the expansion plate (451) to slide along the first direction, so that the expansion plate (451) extends in the radial direction of the expansion mechanism (4), so that the expansion plate (451) forms the expansion surface with the first expansion mold (43) and the second expansion mold (44). Alternatively, the expansion drive (452) is used to drive the expansion plate (451) to slide along the first direction, so that the expansion plate (451) retracts in the radial direction of the expansion mechanism (4).

3. The expanding mechanism for the outer drum ring of the washing machine according to claim 2, characterized in that, The third expansion mold (45) further includes a foot plate (453) and a push plate (454). The foot plate (453) is fixedly connected to the expansion plate (451). The foot plate (453) and the push plate (454) are slidably connected in a second direction. The push plate (454) has a groove (455) on the side away from the foot plate (453). The groove (455) extends radially along the expansion mechanism (4). The expansion drive (452) is fixed on the base plate (42). The drive end of the expansion drive (452) is inserted into the groove (455) and contacts the foot plate (453). The drive end of the expansion drive (452) extends out to press against the foot plate (453), so that the expansion plate (451) slides in a first direction and the expansion plate (451) extends in the radial direction of the expansion mechanism (4). The second direction is the horizontal direction.

4. The bulging mechanism for the outer drum ring of the washing machine according to claim 1, characterized in that, The outer surfaces of the first bulging mold (43), the second bulging mold (44), and the third bulging mold (45) are all arc surfaces, and the first bulging mold (43), the second bulging mold (44), and the third bulging mold (45) are spliced ​​together to form the bulging surface; And / or, the outer surfaces of the first expansion mold (43), the second expansion mold (44) and the third expansion mold (45) are respectively covered with flexible parts.

5. A processing device for the outer drum ring of a washing machine, characterized in that, include: Base (1); The first stamping mechanism (2) includes a stamping die unit (21) and a stamping drive unit (22). The stamping drive unit (22) is fixedly disposed on the base (1). The stamping die unit (21) is slidably disposed on the base (1) along the second direction. The stamping drive unit (22) is connected to the stamping die unit (21). The second stamping mechanism (3) is fixed on the base (1) and spaced apart from the first stamping mechanism (2) along the second direction. The second stamping mechanism (3) includes a stamping punch unit (31); and The bulging mechanism (4) of the outer drum ring of the washing machine according to any one of claims 1 to 4, wherein the base plate (42) of the bulging mechanism (4) is slidably connected to the base (1) in a second direction, the base plate (42) is provided with a clearance opening (421) extending in the second direction, the stamping punch unit (31) is inserted through the clearance opening (421), the first bulging mold (43), the second bulging mold (44) and the third bulging mold (45) are arranged around the stamping punch unit (31), the first bulging mold (43) is arranged between the stamping punch unit (31) and the stamping die unit (21), and the first bulging mold (43) is provided with a through opening (41). After the outer tub ring of the washing machine is fitted onto the expansion mechanism (4) and the expansion mechanism (4) expands the outer tub ring of the washing machine, the stamping drive unit (22) is used to drive the stamping die unit (21) to move toward the stamping punch unit (31) in the second direction, so that the stamping die unit (21) pushes the expansion mechanism (4) to move in the second direction. The stamping punch unit (31) passes through the through hole (41) and cooperates with the stamping die unit (21) to stamp the outer tub ring of the washing machine fitted onto the expansion mechanism (4).

6. The processing equipment for the outer drum ring of a washing machine according to claim 5, characterized in that, The stamping punch unit (31) is provided with an elastic reset member (32) on the side facing the stamping die unit (21). When the stamping die unit (21) pushes the bulging mechanism (4) to move in the second direction, the elastic reset member (32) is configured to abut against the inner wall of the first bulging mold (43) and compress and store energy. When the stamping die unit (21) moves away from the stamping punch unit (31) in the second direction, the elastic reset member (32) is configured to release energy and drive the bulging mechanism (4) to move in the second direction toward the stamping die unit (21).

7. The processing equipment for the outer drum ring of a washing machine according to claim 6, characterized in that, The base (1) is provided with a first limiting stop (11), and the expansion mechanism (4) is provided with a stop block (46). The stop block (46) abuts against the first limiting stop (11) to limit the distance that the expansion mechanism (4) moves toward the stamping die unit (21) in the second direction.

8. The processing equipment for the outer drum ring of a washing machine according to claim 5, characterized in that, The stamping die unit (21) includes a stamping die base (211), which is slidably connected to the base (1) along the second direction. The stamping die base (211) has a pressing surface (212) on the side facing the stamping punch unit (31). The pressing surface (212) is adapted to the outer wall of the bulging mechanism (4). The pressing surface (212) is provided with a bulge stamping die (213) and a drain outlet stamping die (214). The bulge stamping die (213) and the drain outlet stamping die (214) are used to cooperate with the stamping punch unit (31) to stamp bulges and drain outlets on the outer drum of the washing machine.

9. The processing equipment for the outer drum ring of a washing machine according to claim 5, characterized in that, The stamping punch unit (31) includes a stamping punch seat (311), which is fixed on the base (1). The stamping punch seat (311) is provided with a bulge stamping punch and a drain outlet stamping punch on the side facing the stamping die unit (21). The bulge stamping punch and the drain outlet stamping punch are used to cooperate with the stamping die unit (21) to stamp a bulge and a drain outlet on the outer drum of the washing machine.

10. The processing equipment for the outer drum ring of a washing machine according to claim 5, characterized in that, The stamping die unit (21) is provided with a first oil nozzle (5), which is configured to spray lubricating oil onto the outer wall of the outer drum ring of the washing machine that is sleeved on the expansion mechanism (4). And / or, the bulging mechanism (4) is provided with a second oil nozzle (6) on the top of the side facing the stamping die unit (21), and the second oil nozzle (6) is configured to spray lubricating oil onto the stamping area of ​​the inner wall of the outer drum of the washing machine sleeved on the bulging mechanism (4).

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