Pre-assembling machine for front cover and rear cover of inner barrel of washing machine
By designing the positioning components and pressure ring structure, the problems of cylinder flipping and claw alignment during the pre-assembly of the inner cylinder front and rear covers were solved, achieving efficient installation without flipping and improving operational efficiency and accuracy.
Patent Information
- Application Number
- CN202511878109.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-12
- Publication Date
- 2026-01-23
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The pre-assembly process of the inner cylinder and front and rear covers in the existing technology is cumbersome, requires flipping the cylinder, and the chucks are prone to misalignment, resulting in inconvenient operation and difficult installation.
The system employs a positioning component and a pressure ring structure. Through the combination of a horizontal plate, positioning rod, wedge block, and adjusting block, it achieves accurate positioning and alignment of the front and rear covers, preventing the cylinder from flipping over. The locking mechanism is completed by the cooperation of the elastic element and the wedge block.
It achieves efficient alignment and snap-fit of the front and rear covers without flipping the cylinder, improving operational efficiency and installation accuracy.
Smart Images
Figure CN121374099A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of washing machines, in particular to a washing machine inner drum front and rear cover pre-assembly machine. BACKGROUND
[0002] The flanging process of the drum-type washing machine inner drum is to improve its structural strength, ensure safety in use and optimize washing effect. By folding the edges of the two sides of the inner drum wall, a flange with sufficient strength and rigidity is formed to firmly connect with the front cover and the rear cover of the inner drum. When installing the inner drum, the front and rear covers need to be pre-assembled with the drum body, that is, the claws on the front and rear covers are butted with the flange part of the drum body edge, so that the front and rear covers are integrated with the drum body.
[0003] At present, when pre-assembling the inner drum and the front and rear covers, the drum body is fixed, and then pressure is applied to the front and rear covers by multi-point pressing to complete the clamping of the claws of the front and rear covers and the flange part of the drum body. In this process, if the drum body is placed horizontally, the front and rear covers need to be clamped and positioned respectively, so that the front and rear covers coincide with the axis of the drum body; if the drum body is placed vertically, the drum body needs to be turned over halfway so that the end to be assembled faces upward. No matter which way, there is a problem of complicated operation. In addition, in order to improve the strength of the inner drum, a reinforcing rib needs to be installed between the corresponding claws of the front and rear covers after the pre-assembly of the front and rear covers is completed, and if the claws on the front and rear covers are not aligned, the installation of the reinforcing rib will also be misaligned. Based on this, how to complete the pre-assembly of the front and rear covers with the drum body without turning over the drum body, and ensure that the claws on the front and rear covers are aligned up and down, is a problem that needs to be solved by those skilled in the art. SUMMARY
[0004] The purpose of the present application is to provide a washing machine inner drum front and rear cover pre-assembly machine to solve the above-mentioned deficiencies in the prior art.
[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: a washing machine inner drum front and rear cover pre-assembly machine, comprising a base, further comprising a positioning assembly, the positioning assembly comprising two horizontal plates in sliding cooperation with the base, each horizontal plate being provided with two vertical positioning rods; the positioning rod comprising a first cylindrical segment for positioning the front cover, and a second cylindrical segment for positioning the drum body; the base being connected with a horizontal pressing ring through an elastic member, the bottom surface of the pressing ring forming an annular groove matched with the flange part of the drum body edge.
[0006] As a preferred technical scheme of the present application, the two horizontal plates have a first state of mutual adhesion and a second state of mutual separation, in the first state of the horizontal plates, the circumferential surface of the first cylindrical segment is in abutment with the circumferential surface of the front cover; the second cylindrical segment is in abutment with the flange part at the front end of the drum body.
[0007] As a preferred technical scheme of the present application, the upper surface of the pressing ring is uniformly provided with wedge-shaped blocks equal in number to the number of the clamping claws on the rear cover, and a horizontal pushing arm is slidingly mounted on the base at a position corresponding to each wedge-shaped block, and a first roller is mounted on the outer end of the pushing arm and is in contact with the inclined edge of the wedge-shaped block, and the axis of the first roller is in a horizontal state.
[0008] As a preferred technical scheme of the present application, the pushing arm is arranged radially along the pressing ring and is slidingly fitted with the bracket along the radial direction of the pressing ring, and the inner end of the pushing arm forms a horizontal driven arm.
[0009] As a preferred technical scheme of the present application, the driven arm gradually increases in distance from the center of the pressing ring from inside to outside, and a horizontal rotating wheel is rotatably mounted on the base, and a second roller is rotatably mounted on the rotating wheel at a position corresponding to each driven arm and is in contact with the driven arm, and the axis of the second roller is in a vertical state.
[0010] As a preferred technical scheme of the present application, in the state that the first cylindrical segment is in contact with the edge of the clamping claw on the front cover, each wedge-shaped block is in up-and-down correspondence with the position of the clamping claw on the front cover.
[0011] As a preferred technical scheme of the present application, an adjusting block is mounted on the outer circumferential surface of the pressing ring at a position corresponding to each wedge-shaped block, and the adjusting block is used to adjust the position of the clamping claw on the rear cover so that the positions of the clamping claws on the front cover and the rear cover are aligned, and the adjusting block is slidingly fitted with the pressing ring along the circumferential direction of the pressing ring.
[0012] As a preferred technical scheme of the present application, an adjusting arm is fixedly mounted on the adjusting block and penetrates through the pressing ring and is located above the annular groove, and the inner end of the adjusting arm forms a curved shape.
[0013] As a preferred technical scheme of the present application, a third roller for pushing the adjusting arm is rotatably mounted on the bottom of the pushing arm through a rigid arm, and the axis of the third roller is in a vertical state, and the inclined surface of the wedge-shaped block is divided into a first inclined surface, a horizontal part and a second inclined surface from top to bottom.
[0014] As a preferred technical scheme of the present application, two adjacent adjusting blocks are fixedly connected through an arc-shaped rod which is slidingly fitted with the pressing ring and is in a horizontal state.
[0015] In the above technical scheme, the present application provides a front-and-rear cover pre-assembly machine for a washing machine inner drum, which places the front cover on the bottom and positions the front cover, and then sequentially mounts the drum body and the rear cover, and does not need to turn over the drum body during the mounting process, and through the adjusting effect of the adjusting block, both the accurate butt joint of the drum body with the front cover in a vertical state and the up-and-down alignment of the clamping claws on the front cover and the rear cover can be ensured. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below only show some embodiments of the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.
[0017] Figure 1 Figure 1 is a first perspective view of a front cover pre-assembly machine for a washing machine inner drum according to an embodiment of the present application.
[0018] Figure 2 Figure 2 is a second perspective view of a front cover pre-assembly machine for a washing machine inner drum according to an embodiment of the present application. Figure 1 Figure 3 is an enlarged view of part A in Figure 2.
[0019] Figure 3 Figure 4 is a third perspective view of a front cover pre-assembly machine for a washing machine inner drum according to an embodiment of the present application.
[0020] Figure 4 Figure 5 is a fourth perspective view of a front cover pre-assembly machine for a washing machine inner drum according to an embodiment of the present application. Figure 3 Figure 6 is an enlarged view of part B in Figure 5.
[0021] Figure 5 Figure 7 is a fifth perspective view of a front cover pre-assembly machine for a washing machine inner drum according to an embodiment of the present application. Figure 3 Figure 8 is an enlarged view of part C in Figure 7.
[0022] Figure 6 Figure 9 is a schematic view of the cooperation of a compression ring, an adjusting block and an adjusting arm.
[0023] Figure 7 Figure 10 is a schematic view of the structure of a drum and front and rear covers after pre-assembly according to an embodiment of the present application.
[0024] Figure 8 Figure 11 is a schematic view of the structure of a wedge-shaped block according to an embodiment of the present application.
[0025] Figure 9 Figure 12 is a schematic view of the state of a drum and a front cover before pre-assembly according to an embodiment of the present application.
[0026] Figure 10 Figure 13 is a schematic view of the state of a drum and a rear cover before pre-assembly according to an embodiment of the present application.
[0027] Figure 14 is a schematic view of the state of a drum and a front cover before pre-assembly according to an embodiment of the present application.
[0028] 1. Positioning assembly; 101. Horizontal plate; 102. Positioning rod; 1021. First cylindrical section; 1022. Second cylindrical section; 3. Compression ring; 301. Annular groove; 4. Wedge-shaped block; 5. Pushing arm; 6. First roller; 7. Driven arm; 8. Turned wheel; 9. Second roller; 10. Adjusting block; 11. Adjusting arm; 12. Third roller; 13. Arc-shaped rod. DETAILED DESCRIPTION
[0029] In order to make the technical solutions of the present application better understood by those skilled in the art, the present application will be further described in detail below with reference to the drawings.
[0030] As shown in Figure 1 and Figure 2 , the embodiment provides a front and rear cover preloading machine for a washing machine inner drum, which comprises a base and a positioning assembly 1. The state of the washing machine inner drum after installation is shown in Figure 7 , that is, the claws on the front cover and the rear cover are clamped with the edge of the drum body, and the number of the claws on the front cover and the rear cover is the same and each claw position is aligned one by one. During the installation process, the claws on the front cover and the rear cover will be elastically deformed, and the claws will recover after installation to achieve the engagement with the drum body. As shown in Figure 2 , the positioning assembly 1 comprises two horizontal plates 101 which are in sliding fit with the base, and each horizontal plate 101 is provided with two vertical positioning rods 102; the positioning rod 102 comprises a first cylindrical segment 1021 for positioning the front cover, and a second cylindrical segment 1022 for positioning the drum body. The two horizontal plates 101 have a first state of mutual adhesion and a second state of mutual separation, and in the first state of the horizontal plate 101, the circumferential surface of the first cylindrical segment 1021 is in abutment with the circumferential surface of the front cover; and the second cylindrical segment 1022 is in abutment with the front end edge of the drum body.
[0031] In the specific installation process, the operator first places the front cover on the two horizontal plates 101 in the second state; then drives the two horizontal plates 101 from the second state to the first state by external force, that is, the two horizontal plates 101 are close to each other and abut after moving to a certain position, and the positioning rods 102 on the corresponding two horizontal plates 101 are also close to each other and finally abut with the circumferential surface of the front cover. In this way, the positioning of the front cover is completed, and the front cover is in a certain installation position each time. Then, the front cover is rotated counterclockwise by external force, that is, the axis of the front cover remains unchanged, but each claw on the front cover rotates around the axis of the front cover until four claws are in abutment with the corresponding positioning rods 102, specifically, the second cylindrical segment 1022 blocks the claws, thereby completing the positioning of the claws on the front cover. The drum body is installed while the two horizontal plates 101 remain in the first state.
[0032] As shown in Figure 3 and Figure 4 , the base is connected with a horizontal pressure ring 3 through an elastic member 2, and the bottom surface of the pressure ring 3 forms an annular groove 301 matched with the edge of the drum body. The elastic member 2 can be a spring or an elastic telescopic rod. Under the action of no external force, the pressure ring 3 maintains a certain height through the elastic member 2. When the pressure ring 3 is subjected to a downward force, the elastic member 2 will be stretched, and after the force disappears, the pressure ring 3 will rise and reset under the action of the elastic member 2. Specifically, the operator places the drum body vertically on the front cover which has been positioned, that is, as shown in Figure 9The state shown. Then the compression ring 3 is pressed down to the cylinder, so that the bottom edge of the cylinder and the front cover jaw produce force, and finally the card joint. The existence of the annular groove 301 increases the contact area between the compression ring 3 and the cylinder, reduces the pressure received by the contact part of the cylinder and the compression ring 3, and also improves the stability during docking.
[0033] As Figure 1 , Figure 3 and Figure 8 shown, the upper surface of the compression ring 3 is uniformly provided with wedge-shaped blocks 4 which are the same number as the front cover and the rear cover. The inclined surface part of the wedge-shaped block 4 is divided into a first inclined surface part, a horizontal part and a second inclined surface part from top to bottom as shown in Figure 8 The first cylindrical section 1021 is in contact with the edge of the front cover jaw, and each wedge-shaped block 4 is in corresponding position with the front cover jaw.
[0034] As Figure 2 and Figure 4 shown, the base is provided with horizontal push arms 5 corresponding to the position of each wedge-shaped block 4 through the bracket sliding installation, and the outer end of the push arm 5 is provided with a first roller 6 which is in contact with the inclined edge of the wedge-shaped block 4. The axis of the first roller 6 is horizontal. The push arm 5 is arranged radially along the compression ring 3 and is in sliding fit with the bracket radially along the compression ring 3; the inner end of the push arm 5 is connected with a horizontal driven arm 7. The driven arm 7 gradually increases from inside to outside relative to the center distance of the compression ring 3; a horizontal rotating wheel 8 is rotatably installed on the base, and a second roller 9 which is in contact with the driven arm 7 is rotatably installed on the rotating wheel 8 corresponding to the position of each driven arm 7. The axis of the second roller 9 is vertical. A motor is installed on the base for driving the rotating wheel 8.
[0035] Specifically, when the motor drives the rotating wheel 8 to rotate, the second roller 9 will rotate synchronously with the rotating wheel 8, and at the same time the second roller 9 will push the driven arm 7 which is in contact with it to translate along the radial direction of the cylinder. Similarly, the push arm 5 and the first roller 6 also translate synchronously with the driven arm 7. The first roller 6 pushes the wedge-shaped block 4 which is in contact with it during translation, so that the wedge-shaped block 4 and the compression ring 3 synchronously descend against the action of the elastic element 2, and finally the docking of the cylinder and the front cover is completed. After the cylinder and the front cover are docked, the motor drives the rotating wheel 8 to reverse and reset, and the compression ring 3 and the wedge-shaped block 4 also rise and reset. The operator places the rear cover on the installed cylinder as shown in Figure 10 , and then drives the rotating wheel 8 to rotate again by the motor, completes the downward pressure of the wedge-shaped block 4 and the compression ring 3, and presses the rear cover downward by the compression ring 3, so that the rear cover is docked with the cylinder, and finally the pre-assembly of the cylinder and the front and rear covers is completed.
[0036] In summary, in the pre-assembly of the front and rear covers of the inner cylinder in this embodiment, the front cover is first positioned, then the cylinder is installed on the front cover, and finally the rear cover is installed on the cylinder. The whole process does not need to turn over the cylinder, which significantly improves the operation efficiency.
[0037] As shown in Figure 4 , Figure 5 and Figure 6 , the outer circumferential surface of the compression ring 3 is provided with an adjusting block 10 corresponding to each wedge block 4, and the adjusting block 10 is in sliding fit with the compression ring 3 in the circumferential direction of the compression ring 3; adjacent two adjusting blocks 10 are fixedly connected through an arc-shaped rod 13 in sliding fit with the compression ring 3, and the arc-shaped rod 13 is in a horizontal state; the operator only needs to rotate one of the arc-shaped rods 13 to drive all the adjusting blocks 10 to slide relative to the compression ring 3. The adjusting block 10 is fixedly provided with an adjusting arm 11 penetrating through the compression ring 3 and located above the annular groove 301, and the inner end of the adjusting arm 11 is formed in a curved shape. The bottom of the push arm 5 is rotatably provided with a third roller 12 for pushing the adjusting arm 11 through a rigid arm, and the axis of the third roller 12 is in a vertical state.
[0038] Specifically, the process of the push arm 5, the first roller 6, the driven arm 7 and the third roller 12 translating outward along the radial direction of the cylinder is divided into three steps. First step: the wedge block 4, the compression ring 3, the adjusting block 10 and the adjusting arm 11 first synchronously drop a distance (the process of the first roller 6 contacting the second inclined surface part), and the adjusting arm 11 drops to a height corresponding to the third roller 12; second step: the wedge block 4, the compression ring 3, the adjusting block 10 and the adjusting arm 11 maintain a constant height (the process of the first roller 6 contacting the horizontal part), and the third roller 12 applies a force to the adjusting arm 11, so that the adjusting arm 11, the adjusting block 10 and the arc-shaped rod 13 as a whole rotate around the compression ring 3 by a certain angle to a predetermined position; third step: the wedge block 4, the compression ring 3, the adjusting block 10 and the adjusting arm 11 continue to synchronously drop a distance (the process of the first roller 6 contacting the first inclined surface part).
[0039] When the cylinder is installed on the front cover, the adjusting block 10 drops to a height corresponding to the top edge of the cylinder in the first step, and the rotating process of the adjusting block 10 keeps in close contact with the top edge of the cylinder in the second step and adjusts the position of the cylinder, so that the axis of the cylinder is ensured to be in a vertical state and the axis of the cylinder coincides with the axis of the front cover. In the third step, the compression ring 3 contacts the top of the cylinder to press the cylinder downward.
[0040] When the rear cover is installed on the cylinder, the bottom surface of the compression ring 3 drops to a position in close contact with the top surface of the rear cover in the first step, so that the rear cover keeps in a horizontal state. In the second step, the rotating process of the adjusting block 10 keeps in close contact with the pawl on the rear cover and rotates the rear cover as a whole to a predetermined position by pushing the pawl, at this time, the pawl on the rear cover corresponds to the wedge block 4 upward and downward, and aligns with the pawl on the front cover. In this way, in the process of the compression ring 3 pressing downward in the third step, the wedge block 4 can more efficiently apply a downward force to the position of the pawl on the rear cover, and after the connection is completed, the pawl on the rear cover is aligned with the pawl on the front cover.
[0041] In summary, in the embodiment, the same number of adjusting blocks 10 as the number of claws are installed on the compression ring 3, and the wedge block 4 is designed as a sectional structure, so that the lowering process of the compression ring 3 is divided into three steps of compression-stop-compression; so that the adjusting blocks 10 not only realize the adjustment of the position of the cylinder body during the installation of the cylinder body and the front cover, but also realize the adjustment of the position of the rear cover during the installation of the rear cover and the cylinder body, so that the claws on the rear cover and the front cover are aligned up and down.
[0042] The foregoing merely illustrates some exemplary embodiments of the present application, no doubt numerous modifications can be made by those skilled in the art without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions should not be understood as limiting the scope of the present application.
Claims
1. A washing machine inner tub front and rear cover pre-assembly machine comprising a base, characterized in that, The positioning assembly (1) comprises two horizontal plates (101) in sliding fit with the base, and two vertical positioning rods (102) are mounted on each horizontal plate (101); the positioning rod (102) comprises a first cylindrical section (1021) for positioning the front cover and a second cylindrical section (1022) for positioning the barrel; the base is connected with a horizontal pressing ring (3) through an elastic member (2), and the bottom surface of the pressing ring (3) forms an annular groove (301) in fit with the edge roll-formed part of the barrel.
2. A pre-assembly machine for front and rear covers of a drum of a washing machine according to claim 1, characterized in that, The two horizontal plates (101) have a first state of mutual adhesion and a second state of mutual separation, in the first state of the horizontal plates (101), the circumferential surface of the first cylindrical section (1021) is in fit with the circumferential surface of the front cover, and the second cylindrical section (1022) is in fit with the roll-formed part at the front end of the barrel.
3. A pre-assembly machine for front and rear covers of a drum of a washing machine according to claim 2, characterized in that, The upper surface of the pressing ring (3) is uniformly provided with wedge-shaped blocks (4) in the same number as the number of the clamping claws on the rear cover, and a horizontal pushing arm (5) is slidingly mounted on the base at a position corresponding to each wedge-shaped block (4) through a support, and the outer end of the pushing arm (5) is provided with a first roller (6) in fit with the inclined surface of the wedge-shaped block (4), and the axis of the first roller (6) is in a horizontal state.
4. A pre-assembly machine for front and rear covers of a drum of a washing machine according to claim 3, characterized in that, The pushing arm (5) is arranged in the radial direction of the pressing ring (3) and is in sliding fit with the support in the radial direction of the pressing ring (3); and the inner end of the pushing arm (5) is connected with a horizontal driven arm (7).
5. A pre-assembly machine for front and rear covers of a drum of a washing machine according to claim 4, characterized in that, The driven arm (7) gradually increases in distance from the center of the pressing ring (3) from inside to outside; and a horizontal rotating wheel (8) is rotatably mounted on the base, and a second roller (9) in fit with the driven arm (7) is rotatably mounted on the rotating wheel (8) at a position corresponding to each driven arm (7), and the axis of the second roller (9) is in a vertical state.
6. A pre-assembly machine for front and rear covers of a drum of a washing machine according to claim 5, characterized in that, In the state that the first cylindrical section (1021) is in fit with the edge of the clamping claw on the front cover, each wedge-shaped block (4) is in up-and-down correspondence with the position of the clamping claw on the front cover.
7. A pre-assembly machine for front and rear covers of a drum of a washing machine according to claim 6, characterized in that, An adjusting block (10) is mounted on the outer circumferential surface of the pressing ring (3) at a position corresponding to each wedge-shaped block (4), and the adjusting block (10) is used for adjusting the position of the clamping claw on the rear cover, so that the positions of the clamping claws on the rear cover and the front cover are aligned; and the adjusting block (10) is in sliding fit with the pressing ring (3) in the circumferential direction of the pressing ring (3).
8. A pre-assembly machine for front and rear covers of a drum of a washing machine according to claim 7, characterized in that, An adjusting arm (11) penetrating through the pressing ring (3) and located above the annular groove (301) is fixedly mounted on the adjusting block (10), and the inner end of the adjusting arm (11) is formed in a curved shape.
9. A pre-assembly machine for front and rear covers of a drum of a washing machine according to claim 8, characterized in that, A third roller (12) for pushing the adjusting arm (11) is rotatably mounted on the bottom of the pushing arm (5) through a rigid arm, and the axis of the third roller (12) is in a vertical state; and the inclined surface part of the wedge-shaped block (4) is divided into a first inclined surface part, a horizontal part and a second inclined surface part from top to bottom.
10. A pre-assembly machine for front and rear covers of a drum of a washing machine according to claim 9, characterized in that, Adjacent two adjusting blocks (10) are fixedly connected through an arc-shaped rod (13) in sliding fit with the pressing ring (3), and the arc-shaped rod (13) is in a horizontal state.