An assembly machine for filter screen and scale plug

Abstract

The application relates to the technical field of electric iron filter water equipment production, in particular to an assembling machine for a filter screen and a scale plug, which comprises a workbench assembly, the workbench assembly is provided with a workpiece fixing seat arranged on a longitudinal walking device to move back and forth along the longitudinal walking device, a transverse walking device is arranged above the longitudinal walking device, a lifting device is arranged on the transverse walking device, a screwdriver head is arranged on the lifting device, the screwdriver head comprises a motor-driven screwdriver rod, a guide frame and a guide pipe, the motor-driven screwdriver rod is arranged in the guide pipe of the guide frame, a screw adsorption mechanism is arranged in the guide pipe, and the inner circle of the guide pipe cross section is a eccentric circle structure. The application realizes automatic splicing and fixing of the filter screen and the scale plug and automatic installation of fasteners under the combined operation of the devices, the eccentric structure of the inner circle of the guide pipe overcomes the defect that the guide pipe wall is too thin and is easy to be damaged, and the purpose of smoothly entering the splicing position of the guide pipe is achieved.

Description

Technical Field

[0001] This application relates to the technical field of manufacturing water filtration equipment for electric irons, and in particular to an assembly machine for a filter screen and a scale plug. Background Technology

[0002] In the application of electric irons, ironing usually requires spraying water or steam onto the surface of clothing to moisten it, thus achieving a satisfactory ironing effect. For convenience, tap water is generally added to the electric iron. However, due to the presence of particulate impurities and calcium and magnesium ions in tap water, limescale can easily form inside the iron after long-term use, causing blockage. Current technology addresses this problem by installing a filter on the limescale plug of the electric iron. However, because the height of the electric iron body is limited and its edges are uneven, the sealing surface of the limescale plug is generally set at an acute angle to the length of the cylindrical filter. Therefore, specialized equipment is required for assembling the limescale plug and the cylindrical filter. Furthermore, when the machine head of the assembly equipment is driven in with the fasteners perpendicular to the splicing surface and coaxial with the mounting holes, the tilted cylindrical filter can obstruct the machine head from entering the splicing surface of the cylindrical filter, which is detrimental to production.

[0003] Therefore, there is currently no device on the market that can solve the above problems and is suitable for assembling filter screens and scale plugs. Summary of the Invention

[0004] In order to improve the assembly efficiency and quality of filter screens and scale plugs, and to enable the machine head to smoothly drive fasteners into the mounting holes, this application provides an assembly machine for filter screens and scale plugs.

[0005] This application provides an assembly machine for a filter screen and a scale plug, which adopts the following technical solution:

[0006] An assembly machine for filter screens and scale plugs includes a workbench assembly. The workbench assembly is provided with a workpiece fixing seat, a screw supply device, a screwdriver head, a lifting device, a transverse traveling device, and a longitudinal traveling device. The workpiece fixing seat is located on the longitudinal traveling device to move back and forth with the longitudinal traveling device. The transverse traveling device is mounted above the longitudinal traveling device. The lifting device is located on the transverse traveling device to move left and right with the transverse traveling device. The screwdriver head is located on the lifting device to move up and down with the lifting device. The screwdriver head includes a motorized screwdriver rod, a guide frame, and a guide tube. The motorized screwdriver rod passes through the guide tube provided on the guide frame. The guide tube is provided with a screw suction mechanism. The inner circle of the cross-section of the guide tube is an eccentric circle structure.

[0007] By adopting the above technical solution, the coordinated use of the workpiece fixing seat, screw supply device, screwdriver head, lifting device, horizontal travel device, and vertical travel device enables automatic splicing and fixing of the filter screen and scale plug, as well as automatic installation of fasteners. The equipment has a simple structure and high assembly efficiency. Simultaneously, the eccentric inner circle structure of the guide tube overcomes the defect of easily damaged thin walls, allowing the thin side of the guide tube to smoothly avoid the obstruction of the cylindrical filter screen and smoothly enter the splicing position for fastener installation.

[0008] Optionally, the workpiece fixing seat includes a bracket and an upper clamp and a lower clamp respectively disposed on the upper and lower sides of the bracket. The upper clamp and the lower clamp are respectively provided with two workpiece mounting seats on the left and right sides. The workpiece mounting seats are composed of a filter screen fixing groove provided on the upper clamp and a scale plug fixing groove provided on the lower clamp. The lower part of the lower clamp is connected to a thrust cylinder provided on the bracket. The thrust cylinder is used to push the lower clamp to press the upper clamp.

[0009] By adopting the above technical solution, the double-position fixing groove structure can effectively fix the position of the filter screen and the scale plug for installation. Then, the upper and lower clamps automatically splice and position the two, improving the accuracy of fastener installation.

[0010] Optionally, the motorized lever includes a first batch of lever segments and a second batch of lever segments, with a first universal joint connecting the first batch of lever segments and the second batch of lever segments, and a deflector segment provided at the lower part of the guide tube.

[0011] By adopting the above technical solution, when the tilt angle of the filter screen and scale plug is large, such as greater than 3°, the assembly method of making the inlet of the cylindrical filter screen vertical and the splicing surface tilted is adopted. At this time, under the drive of the first universal joint, the second batch of rod segments can smoothly drive the fasteners into the installation hole along the deflection pipe segment in a way that is perpendicular to the splicing surface, thus completing the assembly and fixing.

[0012] Optionally, a limit bearing is fitted onto the second batch of rod segments.

[0013] By adopting the above technical solution, the limit bearing limits the second batch of rod segments, reduces the offset when the second batch of rod segments rotates, improves the working accuracy of the second batch of rod segments, and reduces the product defect rate.

[0014] Optionally, the deflector section is an independent component, with several circumferentially distributed first springs connected between the upper end of the deflector section and the lower end of the guide tube, and the second batch of rod sections located inside the deflector section.

[0015] By adopting the above technical solution, the separate structure of the guide tube and the deflector tube section makes the lower part of the tube straight, which makes it easier to enter when the filter screen inlet is narrow.

[0016] Optionally, a batch rod connecting section is provided between the first batch of rod segments and the second batch of rod segments. The two ends of the batch rod connecting section are respectively provided with a first universal joint and a second universal joint, which are connected to the first batch of rod segments and the second batch of rod segments respectively.

[0017] By adopting the above technical solution, the first universal joint, the second universal joint, and the connecting section of the bit rod cooperate to make the transmission between the first batch of bit segments and the second batch of bit segments smoother and more stable.

[0018] Optionally, the outer wall of the deflecting pipe section is provided with an arc-shaped guide groove, and a first guide rod is provided in the arc-shaped guide groove. The outer end of the first guide rod is hinged to one end of a connecting rod, and the other end of the connecting rod is hinged to a second guide rod provided on the outer wall of the guide pipe.

[0019] By adopting the above technical solution, the structure of the connecting rod, the first guide rod, and the second guide rod further limits the direction-changing pipe section, enabling the direction-changing pipe section to rotate within the arc-shaped guide groove range, thereby improving the stability of the equipment.

[0020] Optionally, a stop is provided inside the arc-shaped guide groove, and the stop is movably connected to the outer wall of the deflection pipe section.

[0021] By adopting the above technical solution, the two ends of the stop can be locked to the outer wall of the deflection pipe section, and the middle part of the stop enters the arc-shaped guide groove to limit the first guide rod; the adjustable stop can appropriately limit the inclination of the deflection pipe section.

[0022] Optionally, the screw adsorption mechanism is a vacuum adsorption mechanism, which includes a vacuum air guide hole on the upper wall of the guide tube, an annular sealing plate between the guide tube and the deflection tube section, and a screw adsorption port on the bottom surface of the deflection tube section.

[0023] By adopting the above technical solution, the annular sealing sheet maintains a certain degree of sealing between the guide tube and the inner cavity of the deflector section, and the vacuum is drawn into the cavity through the vacuum vent, so as to achieve the adsorption of the screw by the screw adsorption port.

[0024] Optionally, the outer peripheral wall of the deflecting pipe section is provided with two symmetrically arranged guide bending devices. The guide bending device includes a stop block, a slide rod, and a second spring. The stop block is fixed to the outer peripheral wall, the slide rod is located below the stop block and is vertically slidably connected to the outer peripheral wall of the deflecting pipe section, and a second spring is connected between the upper end of the slide rod and the lower end of the stop block.

[0025] By adopting the above technical solution, the sliding rod with its lower end lower than the lower end of the screw is used to change the direction of the pipe section in advance, so as to avoid the screw of the pipe section touching the splicing surface in advance before the pipe section changes direction, which would cause displacement or detachment.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. This application, through the coordination of a workpiece fixing seat, a screw supply device, a screwdriver head, a lifting device, a horizontal traveling device, and a vertical traveling device, achieves automatic splicing and fixing of the filter screen and scale plug, and automatic installation of fasteners. The equipment has a simple structure and high assembly efficiency. Simultaneously, the eccentric inner circle structure of the guide tube overcomes the defect of easily damaged thin guide tube walls, enabling the thin side of the guide tube to smoothly avoid the obstruction of the cylindrical filter screen and smoothly enter the splicing position for fastener installation.

[0028] 2. This application adopts an assembly method in which the filter screen inlet is vertical and the splicing surface is inclined, so that when the inclination angle of the filter screen and scale plug is large, such as greater than 3°, the motorized screwdriver can smoothly drive the fastener along the deflection pipe section into the mounting hole in a manner perpendicular to the splicing surface under the drive of the first universal joint, thus completing the assembly and fixing. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of this application.

[0030] Figure 2 This is a schematic diagram of the cross-sectional structure of the guide tube in Embodiment 1 of this application.

[0031] Figure 3 yes Figure 1 Enlarged view of part A in the image.

[0032] Figure 4 yes Figure 1 Enlarged view of part B in the image.

[0033] Figure 5 This is a schematic diagram showing the obstruction of the guide tube during assembly.

[0034] Figure 6 This is a schematic diagram of the internal structure of the guide tube in Embodiment 2 of this application.

[0035] Figure 7 This is a schematic diagram of the internal structure of the guide tube in Embodiment 3 of this application.

[0036] Figure 8 This is a schematic diagram of the external structure of the guide tube in Embodiment 3 of this application.

[0037] Figure 9 This is a schematic diagram of the working structure of the reversing pipe section in Embodiment 3 of this application.

[0038] Explanation of reference numerals in the attached drawings: 1. Worktable assembly; 2. Workpiece fixing seat; 21. Bracket; 22. Upper clamp; 221. Filter screen fixing groove; 23. Lower clamp; 231. Scale plug fixing groove; 24. Thrust cylinder; 3. Screw supply device; 4. Screwdriver head; 41. Motorized screwdriver bar; 411. First batch bar segment; 412. Second batch bar segment; 413. First universal joint; 414. Screwdriver bar connecting section; 415. Second universal joint; 42. Guide frame; 43. Guide tube; 431 1. Inner circle of the pipe; 432. Second guide rod; 44. Air guide groove; 5. Deflecting pipe section; 51. Arc-shaped guide groove; 52. First guide rod; 53. Connecting rod; 54. Stop; 55. First spring; 56. Annular sealing plate; 571. Stop block; 572. Slide rod; 573. Second spring; 58. Limit bearing; 6. Lifting device; 7. Lateral travel device; 8. Longitudinal travel device; 9. Scale plug; 91. Screw; 92. Mounting hole; 10. Filter screen; 11. Control panel. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0040] Example 1

[0041] Reference Figure 1-5 This embodiment 1 describes an assembly machine for a filter screen 10 and a scale plug 9, comprising a workbench assembly 1. The workbench assembly 1 is equipped with a workpiece fixing seat 2, a screw supply device 3, a screwdriver head 4, a lifting device 6, a horizontal traveling device 7, a vertical traveling device 8, and a control panel 11. The control panel 11 is used to electrically connect to and control the drive modules of each device. The workpiece fixing seat 2 consists of two sets, respectively located on the vertical traveling devices 8 on both sides of the screw supply device 3, moving back and forth with the vertical traveling devices 8. The horizontal traveling device 7 is mounted above the vertical traveling devices 8. The lifting device 6 is located on the horizontal traveling device 7 to move left and right with the horizontal traveling device 7. The screwdriver head 4 is located on the lifting device 6 to move up and down with the lifting device 6. The screwdriver head 4 includes a motorized screwdriver rod 41, a guide frame 42, and a guide tube 43. The motorized screwdriver rod 41 passes through the guide tube 43 provided in the guide frame 42. The guide tube 43 is equipped with a screw adsorption mechanism, which can be a vacuum adsorption mechanism or a magnetic adsorption mechanism; this application uses a vacuum adsorption mechanism. Specifically, the screw adsorption mechanism includes a vacuum vent hole on the upper wall of the guide tube 43 and a screw adsorption port on the bottom surface of the guide tube 43. The vacuum vent hole is connected to an external vacuum pump pipeline. The inner circle 431 of the cross-section of the guide tube 43 is an eccentric circle structure.

[0042] The workpiece fixing seat 2 includes a bracket 21 and an upper clamp 22 and a lower clamp 23 respectively located on the upper and lower sides of the bracket 21. The upper clamp 22 and the lower clamp 23 are respectively provided with two workpiece mounting seats on the left and right sides. The workpiece mounting seats are composed of a filter screen fixing groove 221 provided in the upper clamp 22 and a scale plug fixing groove 231 provided in the lower clamp 23. The lower part of the lower clamp 23 is connected to a thrust cylinder 24 provided in the bracket 21. The thrust cylinder 24 is used to push the lower clamp 23 to press the upper clamp 22.

[0043] The screw supply device 3 adopts a rotary screw feeder. The screwdriver head 4 is driven by a motor to rotate. The lifting device 6 is driven by a cylinder and includes a guide frame lifting mechanism connected to the guide frame 42 and a screwdriver bar lifting mechanism connected to the motorized screwdriver bar 41. The lateral travel device 7 adopts a tracked travel mechanism, and the longitudinal travel device 8 is driven by a motor and screw.

[0044] The implementation principle of the assembly machine for filter screen 10 and scale plug 9 in this application embodiment is as follows: The filter screen 10 and scale plug 9 are respectively installed into the filter screen fixing groove 221 and scale plug fixing groove 231 of the workpiece fixing seat on one side. Then, the control panel 11 is operated to start the longitudinal walking device 8 to send the workpiece fixing seat 2 to the pre-installation station below the screwdriver head 4. The induction sensor provided at the pre-installation station detects the arrival of the workpiece fixing seat 2. The transverse walking device 7 automatically drives the screwdriver head 4 to move above the screw supply device 3 according to the running program. The screwdriver head 4 is lowered by the lifting device 6. The screw suction port on the bottom surface of the guide tube 43 of the screwdriver head 4 picks up the screw 91 from the screw supply device 3. After the screwdriver head 4 has been suctioned, it returns to its original position and then moves above the workpiece fixing seat 2 under the drive of the transverse walking device 7. Then the screwdriver head 4 is lowered and the guide tube 43 of the screwdriver head 4 enters the filter screen 10 to install the screw 91 into the mounting hole 92 on the splicing surface. When the guide tube 43 enters the filter screen 10, the thin-walled part of the inner circle 431 of the guide tube 43 is oriented towards the wall of the filter screen 10 closest to the guide tube 43, so that the guide tube 43 can smoothly enter the filter screen 10 without avoiding the filter screen 10.

[0045] Example 2

[0046] Reference Figure 1-6 The assembly machine for the filter screen 10 and the scale plug 9 in this embodiment 2 differs from that in embodiment 1 in that: the motorized screwdriver 41 includes a first batch of screw segments 411 and a second batch of screw segments 412. The upper end of the first batch of screw segments 411 is connected to the output end of the motor and rotates under the drive of the motor. A first universal joint 413 is connected between the first batch of screw segments 411 and the second batch of screw segments 412. A deflector section 5 is provided at the lower part of the guide tube 43. A limit bearing 58 is sleeved on the second batch of screw segments 412.

[0047] The implementation principle of the assembly machine for filter screen 10 and scale plug 9 in this application embodiment is as follows: when the inclination angle of filter screen and scale plug is large, the assembly method of making the filter screen inlet vertical and the splicing surface inclined is adopted. At this time, the guide tube 43 of screwdriver head 4 enters the filter screen 10, and the screw 91 is installed into the mounting hole 92 on the splicing surface by using the deflection tube section 5 with a curved arc.

[0048] Example 3

[0049] Reference Figure 1-9 This embodiment 3 describes an assembly machine for a filter screen 10 and a scale plug 9. The difference between this machine and embodiment 2 is that the deflector section 5 is an independent component. Several circumferentially distributed first springs 55 connect the upper end of the deflector section 5 to the lower end of the guide tube 43. A second set of rod sections 412 is located within the deflector section 5. A rod connecting section 414 is also provided between the first set of rod sections 411 and the second set of rod sections 412. The rod connecting section 414 has a first universal joint 413 and a second universal joint 415 at both ends, which are connected to the first set of rod sections 411 and the second set of rod sections 412, respectively. An arc-shaped guide groove 51 is provided on the outer wall of the deflector section 5. A first guide rod 52 is provided within the arc-shaped guide groove 51. One end of a connecting rod 53 is hinged to the outer end of the first guide rod 52, and the other end of the connecting rod 53 is hinged to a second guide rod 432 provided on the outer wall of the guide tube 43. A stop 54 is provided inside the arc-shaped guide groove 51, and the stop 54 is movably connected to the outer wall of the deflector section 5. The screw adsorption mechanism is a vacuum adsorption mechanism, which includes a vacuum air guide hole on the upper wall of the guide tube 43, an annular sealing plate 56 between the guide tube 43 and the deflector section 5, a screw adsorption port on the bottom surface of the deflector section 5, the guide tube 43, and an air guide groove 44 on the inner wall of the deflector section 5. The annular sealing plate 56 and the first spring 55 are an integral structure, with annular plates connected to both the upper and lower sides. The structure is achieved by welding the upper and lower annular plates to the guide tube 43 and the deflector section 5, respectively. The outer peripheral wall of the deflector section 5 is provided with two symmetrically arranged guide bending devices. The guide bending device includes a stop block 571, a slide rod 572, and a second spring 573. The stop block 571 is fixed to the outer peripheral wall, the slide rod 572 is located below the stop block 571 and is vertically slidably connected to the outer peripheral wall of the deflector section 5. The second spring 573 is connected between the upper end of the slide rod 572 and the lower end of the stop block 571.

[0050] The implementation principle of the assembly machine of filter screen 10 and scale plug 9 in this application embodiment is as follows: When the deflector section 5 approaches the splicing surface, because the splicing surface is inclined, the slide rod 572 on one side of the deflector section 5 first abuts against the splicing surface because its end is lower than the screw 91. Under the pressure of the splicing surface, the slide rod 572 slides upward along the deflector section 5. At this time, the deflector section 5 tilts and is finally positioned by the first guide rod 52 of the arc-shaped guide groove 51. At this time, the deflector section 5 and the screw 91 it adsorbs are perpendicular to the splicing surface. The second batch of rods 412 in the deflector section 5, under the transmission of the first universal joint and the second universal joint, drives the screw of the screw adsorption port into the mounting hole 92.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An assembly machine for a filter screen and a scale plug, characterized by: The application relates to a workbench assembly (1) which is provided with a workpiece fixing seat (2), a screw supply device (3), a screwdriver head (4), a lifting device (6), a transverse walking device (7), a longitudinal walking device (8), the workpiece fixing seat (2) is arranged on the longitudinal walking device (8) and moves forward and backward along with the longitudinal walking device (8), the transverse walking device (7) is arranged above the longitudinal walking device (8), the lifting device (6) is arranged on the transverse walking device (7) and moves left and right along with the transverse walking device (7), the screwdriver head (4) is arranged on the lifting device (6) and moves up and down along with the lifting device (6), the screwdriver head (4) comprises a motor-driven screwdriver rod (41), a guide frame (42) and a guide pipe (43), the motor-driven screwdriver rod (41) is arranged in the guide pipe (43) of the guide frame (42), a screw adsorption mechanism is arranged in the guide pipe (43), and the inner circle (431) of the cross section of the guide pipe (43) is a eccentric circle structure; the motor-driven screwdriver rod (41) comprises a first screwdriver rod section (411) and a second screwdriver rod section (412), a first universal shaft (413) is connected between the first screwdriver rod section (411) and the second screwdriver rod section (412), and a direction-changing pipe section (5) is arranged at the lower portion of the guide pipe (43); the direction-changing pipe section (5) is an independent component, a plurality of first springs (55) are arranged in a circumferential direction and connected between the upper end of the direction-changing pipe section (5) and the lower end of the guide pipe (43), and the second screwdriver rod section (412) is arranged in the direction-changing pipe section (5); a screwdriver rod connecting section (414) is further arranged between the first screwdriver rod section (411) and the second screwdriver rod section (412), first universal shafts (413) and second universal shafts (415) are arranged at the two ends of the screwdriver rod connecting section (414) respectively, and the first universal shafts (413) and the second universal shafts (415) are connected with the first screwdriver rod section (411) and the second screwdriver rod section (412) respectively; an arc-shaped guide groove (51) is arranged on the outer wall of the direction-changing pipe section (5), a first guide rod (52) is arranged in the arc-shaped guide groove (51), one end of a connecting rod (53) is hinged to the outer end of the first guide rod (52), and the other end of the connecting rod (53) is hinged to a second guide rod (432) arranged on the outer wall of the guide pipe (43); a stopper (54) is arranged in the arc-shaped guide groove (51) and movably connected with the outer wall of the direction-changing pipe section (5); two symmetrical guide bending devices are arranged on the outer circumferential wall of the direction-changing pipe section (5), and each guide bending device comprises a stop block (571), a sliding rod (572) and a second spring (573), the stop block (571) is fixed to the outer circumferential wall, the sliding rod (572) is arranged below the stop block (571) and is vertically slidably connected with the outer circumferential wall of the direction-changing pipe section (5), and the second spring (573) is arranged between the upper end of the sliding rod (572) and the lower end of the stop block (571).

2. The filter screen and scale plug assembly machine of claim 1, wherein: The workpiece fixing seat (2) comprises a support (21) and an upper clamp (22) and a lower clamp (23) arranged on the upper and lower sides of the support (21) respectively, two workpiece mounting seats are arranged on the left and right sides of the upper clamp (22) and the lower clamp (23) respectively, the workpiece mounting seat is composed of a filter screen fixing groove (221) arranged on the upper clamp (22) and a scale plug fixing groove (231) arranged on the lower clamp (23), the lower part of the lower clamp (23) is connected with a thrust cylinder (24) arranged on the support (21), and the thrust cylinder (24) is used for pushing the lower clamp (23) to press the upper clamp (22).

3. The filter screen and scale plug assembly machine of claim 1, wherein: The second batch of rod segments (412) are sleeved with limit bearings (58).

4. The filter screen and scale plug assembly machine of claim 1, wherein: The screw suction mechanism is a vacuum suction mechanism, the vacuum suction mechanism comprises vacuum air guide holes arranged on the upper wall of the guide pipe (43), annular sealing sheets (56) arranged between the guide pipe (43) and the change direction pipe section (5), and screw suction ports arranged on the bottom surface of the change direction pipe section (5).

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