Adjustment and positioning tools and methods for mask ear strap welding machines

Abstract

The present invention discloses an adjustment and positioning tool and method for a mask ear strap welding machine. Wherein: the template assembly 1 includes a multifunctional machine adjustment template 1-1 and a gripper 1-2, wherein: the gripper 1-2 is arranged on the upper surface of the multifunctional machine adjustment template 1-1; the side portion of the multifunctional machine adjustment template 1-1 is configured to rely on the retaining edges on both sides of the mask tray 201 for X-axis and Y-axis positioning; the bottom portion of the multifunctional machine adjustment template 1-1 is configured to fit with the upper surface of the mask tray 201 for Z-axis positioning; the upper surface of the multifunctional machine adjustment template 1-1 is provided with one or more specifications of mask ear strap welding points and markings. The embodiment of the present invention can quickly adjust and position each actuator on the mask ear strap welding machine, greatly shorten the adjustment and positioning time of the mask ear strap ultrasonic automatic welding machine, improve the assembly efficiency of the whole machine, and meet the requirements of state consistency and high efficiency and precision of multiple devices.

Description

Technical Field

[0001] The present invention relates to the technical field of mask production equipment, and in particular to an adjustment and positioning tool and method for a mask ear strap welding machine. Background Art

[0002] As people pay more and more attention to healthy living, masks have become a necessity in people's daily lives. The huge demand for masks requires mask production to significantly improve efficiency while maintaining high quality.

[0003] The applicant's research found that the mask ear strap welding machine (such as the mask ear strap ultrasonic automatic welding machine) is a key unit in the production and manufacturing of masks, which contains multiple motion actuators. In order to adapt to the production of multiple varieties and specifications of masks, the motion parameters of each motion mechanism of the ear strap ultrasonic automatic welding machine need to meet the product production process requirements. At present, the installation and adjustment positioning of each actuator of the mask ear strap ultrasonic welding machine are all concentrated in the electromechanical joint adjustment stage and are carried out in a measurement and adjustment manner. Due to the fact that the ear strap ultrasonic automatic welding machine has many adjustment links and strong coupling characteristics, especially during the batch production assembly or repair and maintenance of the equipment, it is inevitable that the ear strap ultrasonic automatic welding machine has a long adjustment cycle, low efficiency, and poor consistency, and also brings some equipment and personal safety hazards.

[0004] The main function of the ultrasonic automatic welding machine for mask ear straps is to realize the automatic operation of supplying ear strap wires, tension control, cutting / picking up ear straps and welding them with the mask body. The structure is complex and there are many operating actuators. Its working stability and reliability are related to the activation rate of mask production equipment. In order to ensure that one model can adapt to the ear strap welding operations of masks of multiple specifications (adults / children) and improve the quality of mask products, during the assembly and debugging of the ear strap ultrasonic welding machine, each operating actuator (cutting and picking mechanism, clamping positioning mechanism, mask body transmission positioning mechanism, welding and clamping mechanism, transducer vibrator, etc.) is installed. How to adjust the positioning quickly and accurately has become a problem that needs to be solved in the manufacturing and assembly process of the ultrasonic automatic welding machine for mask ear straps. Summary of the invention

[0005] Aiming at the problems encountered in the assembly process of an ear strap ultrasonic automatic welding machine, such as multiple adjustment links and strong coupling, which lead to long adjustment and positioning cycle, low efficiency and poor consistency, the present invention proposes a new rapid adjustment and positioning tool and method.

[0006] In the first aspect, an embodiment of the present invention proposes an adjustment and positioning tool for a mask ear strap welding machine, the mask ear strap welding machine includes a mask tray 201, and the mask tray 201 has ribs on both sides, characterized in that the adjustment and positioning tool includes: a template component 1, wherein:

[0007] The template assembly 1 includes a multifunctional machine adjustment template 1-1 and a gripper 1-2, wherein:

[0008] The gripper 1-2 is arranged on the upper surface of the multifunctional machine adjustment template 1-1;

[0009] The side portion of the multifunctional machine adjustment template 1-1 is configured to be positioned in the X-axis and Y-axis directions by means of the ribs on both sides of the mask tray 201;

[0010] The bottom surface portion of the multifunctional machine adjustment template 1-1 is configured to fit with the upper surface of the mask tray 201 for Z-direction positioning;

[0011] The upper surface of the multifunctional adjustment template 1-1 is provided with one or more specifications of mask ear strap welding points and marking lines.

[0012] In a second aspect, an embodiment of the present invention provides a mask tray quick positioning tool 2, wherein:

[0013] The mask tray quick positioning tool 2 includes: a bracket 2-1, a positioning block 2-2, and a butterfly nut 2-3, wherein:

[0014] The bracket 2-1 includes: a transverse base and a longitudinal U-shaped clamp;

[0015] The positioning block 2-2 is clamped in the U-shaped chuck;

[0016] The butterfly nut 2-3 is configured to fix the positioning block (2-2) through the U-shaped clamp and the through hole on the positioning block 2-2;

[0017] The positioning block 2-2 matches the positioning groove on the multifunctional machine adjustment template 1-1 to adjust the positioning tool.

[0018] In a third aspect, an embodiment of the present invention provides a centering and positioning tool 3 for an upper component of an ear band welding machine, wherein:

[0019] The centering and positioning tool 3 of the upper assembly of the ear band welding machine includes: a tool base plate 3-1, a guide rod 3-2, a connecting sleeve 3-3 and a pressing block 3-4, wherein:

[0020] A cross mark is provided on the upper surface of the tooling bottom plate 3-1;

[0021] The guide rods are respectively inserted into the holes at the corners of the tooling base plate 3-1;

[0022] The upper end of the guide rod is provided with an axial plane groove;

[0023] The plane direction of the planar groove is parallel to the horizontal center line of the X-direction cross mark on the tooling bottom plate 3-1;

[0024] The upper end of the guide rod is sleeved with a cylindrical connecting sleeve;

[0025] The lower end of the guide rod has a radial plane groove, and the groove plane cooperates with the pressure block and is fixed on the tooling bottom plate 3-1 to position the guide rod in the Z-axis direction;

[0026] The guide rod serves as the axial positioning reference of the support rod of the upper component of the mask ear strap welding machine, and is used to center the upper component of the ear strap welding machine.

[0027] In a fourth aspect, an embodiment of the present invention provides a method for adjusting and positioning a mask ear strap welding machine, using the above-mentioned adjustment and positioning tool to adjust and position the above-mentioned mask ear strap welding machine, and the method includes:

[0028] Step A, using the template assembly 1 and the mask tray quick positioning tool 2 to calibrate and position the mask tray 201 of the ear band welding station (the station where the mask is being processed) on the chain conveyor unit 200;

[0029] Step B, positioning the transducer vibrator assembly 300 using the template assembly 1;

[0030] Step C, using the template assembly 1 and the upper assembly centering and positioning tool 3 of the ear loop welding machine to perform overall centering and positioning of the upper assembly 400 of the ear loop welding machine;

[0031] Step D, using the template assembly 1 to position the welding and pressing mechanism unit 500;

[0032] Step E: using the template assembly 1 to position the clamping jaw positioning mechanism unit 600 .

[0033] The above-mentioned embodiments of the invention can quickly adjust and position the above-mentioned actuators, greatly shorten the adjustment and positioning time of the mask ear strap ultrasonic automatic welding machine, improve the assembly efficiency of the whole machine, meet the status consistency requirements of multiple devices, and effectively ensure the efficient and accurate positioning of each component unit of the mask ear strap ultrasonic automatic welding machine, thereby providing a strong production equipment guarantee for improving the quality of mask products. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. It is obvious that the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 It is a structural schematic diagram of a template assembly according to an embodiment of the present invention;

[0036] Figure 2 It is a structural schematic diagram of a multifunctional machine adjustment template according to an embodiment of the present invention;

[0037] Figure 3 2 is a schematic structural diagram of a mask tray quick positioning tool according to an embodiment of the present invention;

[0038] Figure 4 It is a structural schematic diagram of the centering and positioning tooling of the upper component of the ear band welding machine according to one embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of a mask tray positioning operation according to an embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of transducer vibrator positioning according to an embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of positioning based on a clamping mechanism according to an embodiment of the present invention;

[0042] Figure 8 It is a schematic diagram of positioning of an ear band welding and pressing mechanism according to an embodiment of the present invention;

[0043] Fig. 9 It is a schematic diagram of positioning the ear strap clamp mechanism according to an embodiment of the present invention.

[0044] in:

[0045] 1. Template assembly, 1-1. Multifunctional machine adjustment template, 1-2. Grip;

[0046] 2. Mask tray quick positioning tooling, 2-1. Bracket, 2-2. Positioning block, 2-3. Butterfly nut;

[0047] 3. Overall centering and positioning tooling for the upper assembly of the ear band welding machine, 3-1. Tooling bottom plate, 3-2. Guide rod, 3-3. Connecting sleeve, 3-4. Press block;

[0048] 100. workbench substrate, 101. substrate square hole 1 (first square hole), 102. substrate square hole 2 (second square hole);

[0049] 200. Chain conveyor unit, 201. Mask tray;

[0050] 300. Mask tray quick positioning tool, 301. First vibrator, 302. Second vibrator, 303. Vibrator tool installation screws*4, 304. Vibrator tool Z-axis adjustment screws*4, 305. First vibrator 301 Y-axis adjustment screws 305*4, 306. Second vibrator 302 Y-axis adjustment screws*4;

[0051] 400. Upper assembly of ear strap welding machine, 401. Support rod;

[0052] 500. welding and pressing mechanism unit, 501. pressing tooth head Y-direction adjustment block 1 (first adjustment block), 502. pressing tooth head Y-direction adjustment block 2 (second adjustment block), 511. pressing tooth head 1 X-direction adjustment screw, 512. pressing tooth head 2 X-direction adjustment screw, 513. pressing tooth head 3 X-direction adjustment screw, 514. pressing tooth head 4 X-direction adjustment screw, 521. ear band pressing tooth head 1, 522. ear band pressing tooth head 2, 523. ear band pressing tooth head 3, 524. ear band pressing tooth head 4;

[0053] 600. Clamping jaw positioning mechanism unit, 601. Clamping jaw positioning mechanism bracket 1 (first bracket), 602. Clamping jaw positioning mechanism bracket 2 (second bracket), 603. Clamping jaw mechanism bracket 1Y-axis adjustment screw, 604. Clamping jaw mechanism bracket 2Y-axis adjustment screw, 611. Clamping jaw mechanism 1X-axis adjustment block, 612. Clamping jaw mechanism 2X-axis adjustment block, 613. Clamping jaw mechanism 3X-axis adjustment block, 614. Clamping jaw mechanism 4X-axis adjustment block, 621. Ear strap clamping jaw 1622. Ear strap clamping jaw 2, 623. Ear strap clamping jaw 3, 624. Ear strap clamping jaw 4. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0055] The features and illustrative embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is by no means limited to any specific settings and methods proposed below, but covers any improvements, replacements and modifications of structures, methods, devices without departing from the spirit of the present invention. In the accompanying drawings and the following description, known structures and technologies are not shown to avoid unnecessary ambiguity in the present invention.

[0056] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other, and the embodiments can refer to and quote each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0057] Figure 1It is a structural schematic diagram of a template assembly according to an embodiment of the present invention; Figure 2 It is a structural schematic diagram of a multifunctional machine adjustment template according to an embodiment of the present invention.

[0058] refer to Figure 1 and Figure 2 The multifunctional machine adjustment and positioning template relies on the contact of the side guards on both sides of the mask tray to achieve X and Y positioning, and the bottom surface of the template fits with the top of the mask tray to achieve Z positioning.

[0059] The template of this machine uses laser to engrave the welding points and marking lines of the ear straps of two specifications of masks for adults and children, such as Figure 2 As shown. The markings on the template include the cross center line of the template itself, 4 cross center markings of the ear band pressure head (adult masks), 4 ear band pressure head contour markings (adult and children's masks), and 4 ear band clamp claw T-shaped markings (adult and children's masks). Among them, the cross center line of the template is used to calibrate the intermittent stop position of the mask tray; the center points of the cross lines of the 4 ear band pressure heads are the intersections of the horizontal center lines and the vertical center lines of the 4 ear band pressure heads when they are pressed, which can be used for positioning the 4 welding and pressing mechanisms on the working plane; the 4 ear band pressure head contour markings provide adjustment references for the 4 ear band pressure heads when they are pressed, and the 4 ear band clamp T-shaped markings provide adjustment references for the ear band clamps to place the ear band workstations.

[0060] Figure 3 It is a structural schematic diagram of a mask tray quick positioning tooling according to an embodiment of the present invention.

[0061] like Figure 3 As shown, a mask tray quick positioning tool (hereinafter referred to as the quick tool) includes: a bracket, a positioning block and a butterfly nut.

[0062] The bottom of the fixture's bracket has three positioning surfaces that can be positioned with the square hole 1 or square hole 2 on the base plate of the ear band welding machine. The upper part of the fixture's bracket has a groove in which a positioning block can be placed. The positioning block has an annular groove, and the positioning block can move forward and backward along the axis of the annular groove. After adjusting the position of the positioning block, use a butterfly nut to tighten and fix it. The three positioning surfaces of the fixture can position the fixture on the square hole 1 or square hole 2 on the base plate of the ear band welding machine. With the help of the portable template assembly, the rapid calibration and positioning of the mask tray at the ear band welding station can be quickly realized.

[0063] Figure 4 The present invention is a schematic structural diagram of an upper component centering and positioning tooling for an ear band welding machine according to an embodiment of the present invention.

[0064] refer to Figure 4A simple tooling for the overall centering of the upper part of an ear band machine (hereinafter referred to as the centering tooling) can be composed of a tooling base plate, four guide rods, four connecting sleeves, and four pressure blocks. Among them, the horizontal center line and vertical center line of the cross mark are made on the upper surface of the tooling base plate by laser scribing technology; the four guide rods can be inserted into the four through holes with the same diameter at the four corners of the tooling base plate respectively, and each guide rod has an axial plane groove at the upper end, and the plane direction of the plane groove is parallel to the horizontal center line of the X-direction cross mark on the tooling base plate. The upper end of each guide rod is fitted with a cylindrical connecting sleeve, and the two holes on the connecting sleeve can be used to fix the connecting sleeve to the guide rod by tightening screws; the lower end of each guide rod has a radial plane groove, and the plane of the groove cooperates with a pressure block and is fixed to the tooling base plate by screws to realize the Z-direction positioning of the guide rod. The four guide rods on the tooling serve as the axial positioning reference for the four support rods of the upper assembly of the mask ear strap welding machine, thereby realizing the centering positioning of the entire upper assembly of the ear strap welding machine.

[0065] The invention discloses a rapid adjustment and positioning method for an ultrasonic automatic welding machine for mask ear straps.

[0066] Since the ultrasonic automatic welding machine for mask ear straps has many moving mechanisms, including 4 ear strap clamps, 4 ultrasonic welding tooth pressing heads, and 2 ear strap extraction clamps and 2 ear strap shears, in the assembly and maintenance process of the ultrasonic automatic welding machine for mask ear straps, these moving parts are all adjusted by position adjustment blocks with annular grooves or sliding installation screws in the annular grooves to adjust the initial X, Y, and Z positions in space. Therefore, there are many adjustment links. The usual method of adjustment according to the drawings is time-consuming and laborious. It is often easy to happen that after the equipment is adjusted, when the program starts to work, some moving parts are not in place, affecting the product quality, or some moving parts collide and cause shutdowns. The positions of all parts can only be readjusted. The assembly of multiple moving parts has a very strong coupling, which is time-consuming and laborious for assembly and maintenance personnel. In view of the current situation of long adjustment and positioning cycle, low efficiency, and poor consistency, the present invention proposes a new rapid adjustment and positioning method, based on the invention of a multifunctional machine adjustment template, a template rapid positioning tooling, and an ear strap machine upper component centering tooling.

[0067] The present invention proposes a method for quickly adjusting and positioning each actuator of a mask ear strap ultrasonic automatic welding machine, and the process is summarized as follows:

[0068] 1) Using the template assembly and quick tooling of the present invention to quickly calibrate and position the mask tray at the ear strap welding station on the chain conveyor unit;

[0069] 2) Using the template assembly of the present invention to quickly position the transducer vibrator assembly;

[0070] 3) Using the template assembly and centering tooling of the present invention to perform overall centering and positioning of the upper assembly of the ear strap machine;

[0071] 4) Using the template assembly of the present invention to quickly position the welding and pressing mechanism unit;

[0072] 5) The template assembly of the present invention is used to quickly position the clamp positioning mechanism unit.

[0073] After using this method, the debugging cycle of the mask ear strap ultrasonic automatic welding machine was greatly shortened, the assembly efficiency was improved, the equipment status consistency requirements were met, and the quality of the mask products was ensured.

[0074] The specific method disclosed in the present invention may be: rapid calibration and positioning of the mask pallet at the ear strap welding station on the chain conveyor unit based on the template assembly and rapid tooling, thereby achieving the positioning of all mask pallets on the entire chain conveyor unit.

[0075] Figure 5 It is a schematic diagram of the mask tray positioning operation based on the template assembly of the present invention according to one embodiment of the present invention.

[0076] refer to Figure 5 , the steps of positioning all mask pallets of the entire chain conveyor unit may include:

[0077] When the chain conveyor unit is assembled as a whole, first position the mask tray at the ear strap welding station, such as Figure 5 As shown, the bracket of the quick fixture of the present invention is installed on the square hole 2 of the workbench substrate through three positioning reference surfaces, the butterfly nut is loosened, and the positioning block is adjusted to the appropriate position. The template assembly is placed on the mask tray, and the position of the mask tray fixed to the chain wing plate is adjusted until the positioning block on the quick fixture of the present invention can be freely inserted into the template positioning slot of the present invention, and the positioning of the mask tray in the ear band welding station is completed. By arranging in sequence, all mask conveyor trays on the entire conveyor chain can be calibrated. Of course, when the rest step length of the intermittent motion mechanism is accurate enough, only one pallet position needs to be calibrated, otherwise all pallet positions need to be calibrated according to this method. Based on the template assembly and the quick fixture, the positioning of the mask tray of the entire chain conveying unit can be quickly adjusted.

[0078] Figure 6 It is a schematic diagram of positioning a transducer vibrator based on the template assembly of the present invention according to an embodiment of the present invention.

[0079] refer to Figure 6 , the implementation method of rapid positioning of the transducer vibrator assembly based on the template assembly may include the following steps:

[0080] After completing the positioning of the mask tray at the ear strap welding station, remove the quick tooling on the square hole 2 of the workbench substrate, and use the template assembly on the mask tray at the ear strap welding station to quickly adjust and position the transducer vibrator assembly. When drilling the screw mounting holes between the transducer vibrator assembly and the workbench substrate, it is necessary to make the short sides of the first transducer vibrator and the second vibrator have the same distance from the long side end face of the template assembly (such as Figure 6 Distance a); Loosen the Z-adjustment screws of the four vibrators, adjust the end faces of the two transducer vibrators to be higher than the surface of the workbench substrate, ensure that the distance between the upper end face of the transducer vibrator and the lower surface of the template is 1.5 to 2 mm, and align the outer long side end faces of vibrators 1 and 2 with the short side end faces of the template by adjusting the 4 Y-adjustment screws of vibrator 1 or the 4 Y-adjustment screws of vibrator 2. Figure 6 As shown, the transducer vibrator assembly is positioned. The upper assembly of the ear strap machine refers to a combined structure above the base plate of the ear strap machine workbench for supporting the various motion mechanisms of the ear strap machine, which is mainly positioned by four support rods.

[0081] Figure 7 It is a schematic diagram of the overall centering positioning of the upper component of the ear strap machine based on the template component and the clamping mechanism of the centering tooling of the present invention in one embodiment of the present invention.

[0082] like Figure 7 As shown, the template assembly and centering and positioning tooling provided by the present invention can realize the overall rapid centering and positioning of the upper assembly of the ear strap machine. The operation method can be: after the template assembly is applied to the mask tray of the ear strap welding station to complete the chain conveying unit and the rapid positioning of the transducer oscillator, the centering and positioning tooling disclosed in the present invention is installed according to the technical solution. <3> of Figure 4 Install it on the template assembly according to the indicated method, align the cross mark of the centering and positioning tool with the cross mark of the template assembly, loosen the hexagonal flat-end set screws on the four connecting sleeves of the centering and positioning tool, let the connecting sleeves fall freely on the guide rod, and then adjust the position of the ear belt machine upper assembly (as a whole) to align the axes of the four support rods of the ear belt machine upper assembly with the axes of the four guide rods of the centering and positioning tool, and then lift the connecting sleeve on the guide rod of the centering and positioning tool, so that the mounting nuts of the four support rods of the ear belt machine upper assembly enter the connecting sleeve of the centering tool one by one, and tighten the hexagonal flat-end set screws on the connecting sleeve one by one, so as to achieve the overall centering positioning of the ear belt machine upper assembly.

[0083] Figure 8 It is a schematic diagram of positioning an ear band welding and pressing mechanism based on a template assembly according to an embodiment of the present invention.

[0084] refer to Figure 8The ultrasonic welding position of the ear strap and the mask body depends on the position of the four pressing teeth of the welding and pressing mechanism unit. After installing the chain conveying unit, quickly positioning the transducer oscillator, and centering the upper assembly of the ear strap machine, the present invention uses the ear strap pressing teeth outline markings on the template assembly on the mask tray at the ear strap welding station, and adjusts the screws and the adjustment block, such as Figure 8 As shown (to clearly show the positioning method of the tooth pressing head, Figure 8 The upper components of the ear strap machine are hidden in the figure. The positional relationship between the welding and clamping mechanism and the upper components of the ear strap machine is shown in Figure 7 , Figure 8 501 and 502), so that the end of each ear band pressing tooth head is aligned with the contour mark on the template assembly, thereby quickly completing the rapid positioning of the welding and pressing mechanism unit.

[0085] Fig. 9 It is a schematic diagram of positioning an ear strap clamp mechanism based on a template assembly according to an embodiment of the present invention.

[0086] refer to Fig. 9 , based on the rapid positioning of the clamping jaw positioning mechanism unit of the template assembly. The normal ear band picking, cutting and delivery process is that when the ear band is in a straight state, it is clamped by the clamping jaw positioning mechanism unit, cut by the cutting mechanism, and the clamping jaw positioning mechanism rotates 90° to reach the specified position. However, the equipment debugging and installation are just the opposite. First, the four ear band clamps must be accurately positioned at the destination to be reached at the ear band welding station. After the chain conveying unit, the rapid positioning of the transducer oscillator, the overall centering positioning of the upper assembly of the ear band machine, and the rapid positioning of the welding and clamping mechanism unit are installed, the present invention uses the T-shaped markings of the ear band clamps on the template assembly on the mask tray of the ear band welding station, through the Y-adjustment screws of the clamping jaw mechanism bracket and the X-adjustment block of the clamping jaw mechanism, see Fig. 9 (To clearly demonstrate the positioning method of the gripper positioning mechanism unit, Fig. 9 The upper assembly of the ear strap machine is hidden in the figure. The positional relationship between the clamping jaw positioning mechanism unit and the upper assembly of the ear strap machine is shown in Figure 7 , Fig. 9 601 and 602), so that the end surface of each ear strap clamping jaw is aligned with the horizontal line of the T-shaped marking line, and the center of each ear strap clamping jaw is aligned with the vertical line of the T-shaped marking line, thereby quickly completing the rapid positioning of the clamping jaw positioning mechanism unit.

[0087] In some embodiments, an adjustment and positioning tool for a mask ear strap welding machine is provided, the mask ear strap welding machine includes a mask tray 201, and both sides of the mask tray 201 have ribs. The entire positioning tool may include: a template assembly 1.

[0088] Wherein: the template component 1 includes a multifunctional machine adjustment template 1-1 and a gripper 1-2.

[0089] Among them: the gripper 1-2 is arranged on the upper surface of the multifunctional adjustment template 1-1; the side portion of the multifunctional adjustment template 1-1 is configured to rely on the ribs on both sides of the mask tray 201 for X-axis and Y-axis positioning; the bottom portion of the multifunctional adjustment template 1-1 is configured to fit with the upper surface of the mask tray 201 for Z-axis positioning; the upper surface of the multifunctional adjustment template 1-1 is provided with one or more specifications of mask ear strap welding points and marking lines.

[0090] In some embodiments, the markings include one or more of the following markings: the template cross center line of the multifunctional machine adjustment template 1-1 itself, the cross center line of the tooth pressing head, the contour marking line of the tooth pressing head, and the T-shaped marking line of the ear clip. Among them: the template cross center line is configured to calibrate the intermittent stop position of the mask tray; the cross center line of the tooth pressing head is configured to position the welding pressing mechanism on the working plane; the contour marking line of the tooth pressing head is configured to provide an adjustment reference when the ear band tooth pressing head is pressed; the T-shaped marking line of the ear clip is configured to provide an adjustment reference for the ear band clip to be placed at the ear band station.

[0091] In some embodiments, the four corners of the multifunctional machine adjustment template 1-1 are symmetrically provided with: adult ear clip T-shaped marking line, adult tooth pressing head contour line, and adult tooth pressing head center line; the four corners of the multifunctional machine adjustment template 1-1 are symmetrically provided with: children's ear clip T-shaped marking line, and children's tooth pressing head contour line.

[0092] In some embodiments, the multifunctional adjustment template 1-1 is a rectangle with ears on both sides; the length of the rectangle is along the Y-axis and the width is along the X-axis, wherein the Y-axis and the X-axis intersect at the center of the rectangle; the ears are configured to be clamped between the two retaining edges of the mask tray 201.

[0093] In some embodiments, the multifunctional machine adjustment template 1-1 is provided with a positioning groove on the side in the Y-axis direction.

[0094] In some embodiments, the adjustment and positioning tool may further include: a mask tray quick positioning tool 2. Wherein: the mask tray quick positioning tool 2 shown includes: a bracket 2-1, a positioning block 2-2, and a butterfly nut 2-3. Wherein: the bracket 2-1 includes: a horizontal base and a longitudinal U-shaped chuck; the positioning block 2-2 is clamped in the U-shaped chuck; the butterfly nut 2-3 is configured to fix the positioning block 2-2 through the through holes on the U-shaped chuck and the positioning block 2-2; the positioning block 2-2 matches the positioning groove on the multifunctional machine adjustment template 1-1 to position the adjustment and positioning tool.

[0095] In some embodiments, the adjustment and positioning tool may further include: an upper component centering and positioning tool 3 for the ear strap welding machine. The upper component centering and positioning tool 3 for the ear strap welding machine includes: a tool base plate 3-1, four guide rods 3-2, four connecting sleeves 3-3 and four pressing blocks 3-4. Among them: a cross mark is set on the upper surface of the tooling base plate 3-1; four guide rods 3-2 are respectively inserted into the holes at the four corners of the tooling base plate 3-1; the upper end of each guide rod 3-2 has an axial plane groove; the plane direction of the plane groove is parallel to the horizontal center line perpendicular to the X-direction cross mark on the tooling base plate 3-1; the upper end of each guide rod 3-2 is sleeved with a cylindrical connecting sleeve 3-3; the lower end of each guide rod 3-2 has a radial plane groove, the groove plane cooperates with the four pressing blocks 3-4, fixed on the tooling base plate 3-1, and the guide rod 3-2Z axial positioning; the four guide rods 3-2 serve as the axial positioning reference of the four support rods 4-1 of the upper assembly of the mask ear strap welding machine, and the upper assembly of the ear strap welding machine is centered.

[0096] In some embodiments, a method for adjusting and positioning a mask ear strap welding machine is to use the above-mentioned adjustment and positioning tool to adjust and position the above-mentioned mask ear strap welding machine. The adjustment and positioning method may include the following steps:

[0097] Step A, using the template assembly 1 and the mask tray quick positioning tool 2 to calibrate and position the mask tray 201 at the ear band welding station on the chain conveyor unit 200;

[0098] Step B, positioning the transducer vibrator assembly 300 using the template assembly 1;

[0099] Step C, using the template assembly 1 and the upper assembly centering and positioning tool 3 of the ear loop welding machine to perform overall centering and positioning of the upper assembly 400 of the ear loop welding machine;

[0100] Step D, using the template assembly 1 to position the welding and pressing mechanism unit 500;

[0101] Step E: using the template assembly 1 to position the clamping jaw positioning mechanism unit 600 .

[0102] In some embodiments, step A may include:

[0103] When the chain conveyor unit 200 is assembled as a whole, the mask tray 201 of the ear band welding station is positioned;

[0104] Install the bracket of the mask tray quick positioning tool 2 on the square hole 102 of the workbench base plate 100 through the three positioning reference surfaces, loosen the butterfly nut 2-3, and adjust the positioning block 2-2 to the specified position;

[0105] Place the template assembly 1 on the mask tray 201 of the ear strap welding station, adjust the position of the mask tray 201 fixed to the chain wing plate, until the positioning block 2-2 on the template assembly 1 is freely inserted into the template positioning slot, and complete the positioning of the mask tray 201 of the ear strap welding station.

[0106] In some embodiments, step B comprises the following steps:

[0107] Remove the mask tray quick positioning tool 2 on the square hole 102 of the workbench base plate 100;

[0108] The transducer vibrator assembly 300 is adjusted and positioned using the template assembly 1 on the mask tray 201 of the ear strap welding station;

[0109] When drilling the holes for the mounting screws 303 of the transducer vibrator assembly 300 and the workbench substrate 100, it is necessary to make the distances between the long side end faces of the multifunctional machine adjustment template 1-1 assembly of the first vibrator 301 and the second vibrator 302 equal;

[0110] Loosen the Z-adjustment screws 304 of the four vibrators, adjust the end faces of the two transducer vibrators to a position higher than the surface of the workbench substrate 100, so that the upper end faces of the first vibrator 301 and the second vibrator 302 are 1.5 mm to 2 mm away from the lower surface of the template 1, and the outer long side end faces of the first vibrator 301 and the second vibrator 302 are aligned with the short side end faces of the multi-functional adjustment template 1-1 by adjusting the Y-adjustment screws 305 of the four first vibrators 301 or the Y-adjustment screws 306 of the four second vibrators 302.

[0111] In each of the above embodiments, the mask ear strap welding machine can be an automatic ultrasonic welding machine for mask ear straps.

[0112] The innovative points of the present invention can be as follows:

[0113] This method proposes a portable multifunctional machine adjustment template, on which several specifications of mask ear strap welding points and marking lines are made. Relying on the chain tray conveying unit, it can not only accurately calibrate the mask tray position of the welding station of the mask ear strap ultrasonic automatic welding machine, but also use it as a reference to quickly and accurately adjust and position the cutting / picking mechanism transducer vibrator component, the ear strap machine upper component, the welding and pressing mechanism unit, the clamping claw positioning mechanism unit, the ear strap tray, and the transducer vibrator, which greatly shortens the debugging cycle of the mask ear strap ultrasonic automatic welding machine, improves the assembly efficiency, and meets the requirements for equipment status consistency.

[0114] The present application proposes a mask tray rapid positioning tool, which, with the cooperation of a portable template assembly, can quickly realize the rapid calibration and positioning of the mask tray at the ear band welding station.

[0115] The present application proposes a simple tooling, which can perform overall centering and positioning of the upper components of the mask ear strap ultrasonic automatic welding machine;

[0116] This application summarizes the adjustment and positioning operation methods of each unit of the mask ear strap ultrasonic automatic welding machine;

[0117] The method of the present application is several times more efficient than the traditional adjustment method. Through this method, the consistency of the status of each mechanism of the mask ear strap ultrasonic automatic welding machine can be achieved, which has very important practical significance for equipment installation and debugging, maintenance and repair, and rapid restoration of equipment to a good state.

[0118] Those skilled in the art can understand that the above-mentioned tools, devices, etc. can be the executors of the above-mentioned methods, can execute the above-mentioned process steps, solve the above-mentioned technical problems, and achieve the above-mentioned technical effects. For the sake of brevity, the details of the above-mentioned invention are also applicable to the present device, and the same or similar contents are not repeated. The contents of the above-mentioned invention can be referenced and quoted with the contents of the present device, and the method steps can also be adjusted in order according to actual needs.

[0119] It should be noted that "and / or" in the present application represents three situations. For example, A and / or B can represent: situation A, situation B, and situation A and B.

[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the field can easily think of various equivalent modifications or substitutions within the technical scope disclosed by the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. An adjustment and positioning tool for a mask ear strap welding machine, the mask ear strap welding machine comprising a mask tray (201), the mask tray (201) having ribs on both sides, characterized in that: The positioning adjustment tool comprises: a template component (1), wherein: The template component (1) comprises a multifunctional machine adjustment template (1-1) and a gripper (1-2), wherein: The gripper (1-2) is arranged on the upper surface of the multifunctional machine adjustment template (1-1); The side portion of the multifunctional machine adjustment template (1-1) is configured to be positioned in the X-axis direction and the Y-axis direction by relying on the ribs on both sides of the mask tray (201); The bottom surface of the multifunctional machine adjustment template (1-1) is configured to fit with the upper surface of the mask tray (201) for Z-direction positioning; The upper surface of the multifunctional machine adjustment template (1-1) is provided with one or more mask ear strap welding points and marking lines of different specifications; wherein the marking lines include one or more of the following marking lines: The multifunctional machine adjustment template (1-1) has its own template cross center line, gear head cross center line, gear head contour marking line, ear clip T-shaped marking line, among which: The template cross centerline is configured to calibrate the intermittent stop position of the mask tray; The cross center line of the pressing tooth head is configured to position the welding pressing mechanism on the working plane; The contour marking line of the tooth pressing head is configured to provide an adjustment reference when the ear strap tooth pressing head is pressed; The ear clip T-shaped marking line is configured to provide an adjustment reference for the ear strap clip to be placed at the ear strap station; The adjustment and positioning tool also includes: a mask tray quick positioning tool (2), wherein: The mask tray quick positioning tool (2) shown comprises: a bracket (2-1), a positioning block (2-2), and a butterfly nut (2-3), wherein: The bracket (2-1) comprises: a transverse base and a longitudinal U-shaped clamp; The positioning block (2-2) is clamped in a U-shaped chuck; The butterfly nut (2-3) is configured to fix the positioning block (2-2) through the through hole on the U-shaped clamp and the positioning block (2-2); The positioning block (2-2) matches the positioning groove on the multifunctional machine adjustment template (1-1) to adjust the positioning tool; The adjustment and positioning tool also includes: an upper component centering and positioning tool (3) of the ear strap welding machine, wherein: The upper component centering and positioning tool (3) of the ear band welding machine comprises: a tool base plate (3-1), a guide rod (3-2), a connecting sleeve (3-3) and a pressing block (3-4), wherein: A cross mark is arranged on the upper surface of the tooling bottom plate (3-1); The guide rods are respectively inserted into the holes at the corners of the tooling bottom plate (3-1); The upper end of the guide rod is provided with an axial plane groove; The plane direction of the planar groove is parallel to the horizontal center line of the X-direction cross mark on the tooling bottom plate (3-1); The upper end of the guide rod is sleeved with a cylindrical connecting sleeve; The lower end of the guide rod is provided with a radial plane groove, the plane of the groove cooperates with the pressing block and is fixed on the tooling bottom plate (3-1) to position the guide rod in the Z-axis direction; The guide rod serves as the axial positioning reference of the support rod of the upper component of the mask ear strap welding machine, and is used to center the upper component of the ear strap welding machine.

2. The adjustment and positioning tool according to claim 1, characterized in that: in: The four corners of the multifunctional machine adjustment template (1-1) are symmetrically provided with: an adult ear clip T-shaped marking line, an adult tooth pressing head contour line, and an adult tooth pressing head center line; and / or, The four corners of the multifunctional machine adjustment template (1-1) are symmetrically provided with: a T-shaped marking line for a child's ear clip and a contour line for a child's tooth pressing head.

3. The adjustment and positioning tool according to claim 1, characterized in that: in: The multifunctional machine adjustment template (1-1) is a rectangle with ears on both sides; The length of the rectangle is along the Y axis, and the width is along the X axis, wherein the Y axis and the X axis intersect at the center of the rectangle; The ear piece is configured to be clamped in a position between two retaining edges of the mask tray (201).

4. A method for adjusting and positioning a mask ear strap welding machine, using an adjustment and positioning tool as claimed in any one of claims 1 to 3 to adjust and position the mask ear strap welding machine, characterized in that the method include: Step A, using the template assembly (1) and the mask tray quick positioning tool (2) to calibrate and position the mask tray (201) at the ear band welding station on the chain conveying unit (200); Step B, using the template component (1) to position the transducer vibrator component (300); Step C, using the template assembly (1) and the upper assembly centering and positioning tool (3) of the ear strap welding machine to perform overall centering and positioning of the upper assembly (400) of the ear strap machine; Step D, using the template assembly (1) to position the welding and pressing mechanism unit (500); Step E, using the template assembly (1) to position the clamping jaw positioning mechanism unit (600); Wherein, step B comprises: Remove the mask tray quick positioning tool (2) on the square hole (102) of the workbench base plate (100); Using the template assembly (1) on the mask tray (201) of the ear strap welding station to adjust and position the transducer vibrator assembly (300); When drilling holes for mounting screws (303) of the transducer vibrator assembly (300) and the workbench substrate (100), the distances between the long side end faces of the multifunctional machine adjustment template (1-1) of the first vibrator (301) and the second vibrator (302) need to be equal; The Z-direction adjustment screw (304) of the vibrator fixture is loosened, and the end faces of the two transducer vibrators are adjusted to a position higher than the surface of the workbench substrate (100), so that the distance between the upper end face of the second vibrator (302) and the lower surface of the template assembly (1) is 1.5 mm to 2 mm, and the outer long side end faces of the first vibrator (301) and the second vibrator (302) are aligned with the short side end face of the multifunctional machine adjustment template (1-1) by adjusting the Y-direction adjustment screw (305) of the first vibrator (301) or the Y-direction adjustment screw (306) of the second vibrator (302).

5. The method according to claim 4, characterized in that Step A includes: When the chain conveying unit (200) is assembled as a whole, the mask tray (201) of the ear band welding station is positioned; Install the bracket of the mask tray quick positioning tool (2) on the square hole (102) of the workbench base plate (100) through three positioning reference surfaces, loosen the butterfly nut (2-3), and adjust the positioning block (2-2) to a specified position; The template assembly (1) is placed on the mask tray (201) of the ear strap welding station, and the position of the mask tray (201) fixedly connected to the chain wing plate is adjusted until the positioning block (2-2) on the template assembly (1) is freely inserted into the template positioning slot, thereby completing the positioning of the mask tray (201) of the ear strap welding station.

6. The method according to any one of claims 4-5, characterized in that: Step C includes: A template assembly (1) is applied on a mask tray (201) at an ear strap welding station to complete a chain conveying unit and quickly position a transducer vibrator; Installing the centering and positioning tool (3) of the upper component of the ear strap welding machine onto the template component (1) so that the cross mark of the centering and positioning tool (3) of the upper component of the ear strap welding machine is aligned with the cross mark of the template component (1); Loosen the hexagon socket flat-end set screw on the connecting sleeve of the centering and positioning tooling (3) of the upper assembly of the ear band welding machine, and let the connecting sleeve fall freely on the guide rod; Adjusting the position of the upper component (400) of the ear strap machine so that the axis of the support rod is aligned with the axis of the guide rod of the centering and positioning tool (3) of the upper component of the ear strap welding machine; The connecting sleeve on the guide rod of the centering and positioning tool (3) of the upper assembly of the ear band welding machine is raised, so that the mounting nuts of the support rod of the upper assembly (400) of the ear band machine enter the connecting sleeve of the centering tool one by one, and the hexagon socket flat-end set screws on the connecting sleeve are tightened one by one.

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