A new ultrasonic welding apparatus

Abstract

The utility model relates to a disposable sanitary product production equipment technical field, concretely relates to a novel ultrasonic welding equipment, its characterized by: including the rotary disc of rotary arrangement, the side end surface fixed of rotary disc is equipped with the annular mounting seat of same shaft arrangement, install a plurality of ultrasonic welding main part on the outer circumferential surface of annular mounting seat, install a plurality of articulated seats on the outer circumferential surface of rotary disc, articulate to have the welding rocker arm on articulated seat, the welding rocker arm is driven by the turnover drive mechanism and does turnover opening and closing movement, be equipped with the rolling transmission mechanism in the welding rocker arm, be equipped with the gear plate on the rolling transmission mechanism, the rolling transmission mechanism is driven by the rolling drive mechanism and drives the welding surface of gear plate to do the rolling motion. The utility model can overcome the unevenness of the existing opening and closing type welding and the defect of not firm welding, also overcome the short defect of the existing rolling type welding time, can make full use of the angle welding, greatly promote the welding time, and have the prewelding function, can weld the material that is difficult to weld.

Description

Technical Field

[0001] This utility model relates to the technical field of disposable hygiene product production equipment, specifically to a novel ultrasonic welding equipment. Background Technology

[0002] Existing ultrasonic waistband welding equipment falls into two main categories: open-type and roll-type. The advantage of the open-type is that, assuming the material has a uniform wrap angle, its welding time is relatively long, making full use of the wrap angle. However, because its welding method involves welding the entire surface, and the welding material is loose non-woven fabric with hot melt adhesive and spandex fibers sandwiched in between, the material has uneven thickness, with some areas having 4 layers and others having 6 layers. This results in some areas of the weld being strong while others are not. The roll-type uses a rolling wheel for welding, which provides uniform welding and higher welding strength than the open-type, but the welding time is shorter. Furthermore, to avoid material, the wheel does not weld during its return stroke. In view of this, this problem has been studied in depth, hence the emergence of this case. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a new type of ultrasonic welding equipment that can overcome the shortcomings of uneven and weak welding in existing open and closed welding, as well as the shortcomings of short welding time in existing rolling welding, can make full use of corner welding, greatly improve welding time, and has a pre-welding function, and can weld materials that are difficult to weld.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A novel ultrasonic welding device includes a rotating turntable, a coaxially arranged annular mounting seat fixed on one end face of the turntable, a plurality of ultrasonic welding bodies fixedly mounted on the outer circumferential surface of the annular mounting seat along its circumferential direction, a plurality of spaced-apart hinge seats fixedly mounted on the outer circumferential surface of the turntable along its circumferential direction, a welding rocker arm hinged on the hinge seat, the plurality of ultrasonic welding bodies and the plurality of welding rocker arms are arranged in a corresponding manner, the welding rocker arms are driven by a flipping drive mechanism to perform flipping and opening and closing movements, a rolling transmission mechanism is provided inside the welding rocker arm, the rolling transmission mechanism is provided with a toothed plate that cooperates with the ultrasonic welding body, the welding surface of the toothed plate is a large-diameter arc surface, the rolling transmission mechanism is driven by the rolling drive mechanism to drive the welding surface of the toothed plate to perform rolling movement.

[0005] Furthermore, the flipping drive mechanism includes a planar cam, a first linear guide pair, a first slide, a first connecting rod, and a first guide roller. Multiple first slides are arranged corresponding to multiple welding rocker arms. The first slide is slidably connected to the other end face of the turntable via the first linear guide pair and can slide radially along the turntable. One end of the first connecting rod is hinged to the welding rocker arm, and the other end is hinged to the first slide. A rotatable first guide roller is mounted on the surface of the first slide away from the turntable. The planar cam is fixedly arranged and coaxially spaced from the turntable. A first annular guide groove adapted to the first guide roller is provided on the surface of the planar cam near the first slide. The first guide roller is embedded in the first annular guide groove, and the two roll in cooperation. When the first guide roller rolls in the first annular guide groove, it can drive the first slide to slide.

[0006] Furthermore, multiple positioning blocks are provided on the side near the turntable above the outer circumference of the annular mounting base. Each positioning block corresponds to one of the multiple ultrasonic welding bodies. The positioning blocks are fixedly installed on the support base, which is fixedly located on the outer circumference of the annular mounting base. The upper end face of the positioning block is flush with the upper end face of the ultrasonic welding body and is used to position the toothed plate by flipping and pressing it down.

[0007] Furthermore, the rolling transmission mechanism includes a connecting plate, an arc-shaped mounting plate, a synchronous linkage component, and a rolling restriction component. The arc-shaped mounting plate and the connecting plate are respectively located on the upper and lower sides of the synchronous linkage component. The toothed plate is fixedly installed on the lower end of the connecting plate. The outer arc surface of the arc-shaped mounting plate has the same arc diameter as the welding surface of the toothed plate, and the two are symmetrically arranged. The arc diameter of the welding surface is not less than 1000mm. The outer arc surface of the arc-shaped mounting plate rolls against the lower end face of the upper top plate of the welding rocker arm, and a rolling restriction component is provided between the two. The synchronous linkage component performs a linkage action under the drive of the rolling drive mechanism and drives the arc-shaped mounting plate to roll under the rolling restriction of the rolling restriction component, and makes the toothed plate follow the arc-shaped mounting plate to roll synchronously.

[0008] Furthermore, the limiting rolling assembly includes an arc-shaped gear plate and a rack. Arc-shaped gear plates are fixedly installed on both the left and right sides of the arc-shaped mounting plate, and racks are installed on both the left and right sides of the top plate. The installation position of the racks is adjustable along their length. The arc-shaped gear plates and racks are adapted to each other and mesh with each other for transmission. The pitch circle diameter of the arc-shaped gear plate is the same as the arc diameter of the outer arc surface of the arc-shaped mounting plate.

[0009] Furthermore, the synchronous linkage assembly includes a transverse guide rod, a first guide sleeve, a second guide sleeve, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, and a compression spring. The two ends of the transverse guide rod are respectively mounted on the side plates on the front and rear sides of the welded rocker arm. The first guide sleeve, the compression spring, and the second guide sleeve are slidably fitted onto the transverse guide rod from front to back. An adjusting nut is threaded onto the second guide sleeve. The compression spring elastically abuts against the first guide sleeve and the adjusting nut. The second, third, fourth, and fifth connecting rods are all two-bar linkages. The second connecting rod is symmetrically arranged on the left and right sides of the transverse guide rod. One end of the second connecting rod is hinged to one end of the arc-shaped mounting plate and the other end is hinged to the first guide sleeve. One end of the third connecting rod is hinged to one end of the connecting plate and the other end is hinged to the first guide sleeve. One end of the fourth connecting rod is hinged to one end of the arc-shaped mounting plate and the other end is hinged to the second guide sleeve. One end of the fifth connecting rod is hinged to one end of the connecting plate and the other end is hinged to the second guide sleeve. The second and third connecting rods are symmetrically arranged vertically, and the fourth and fifth connecting rods are symmetrically arranged vertically.

[0010] Furthermore, a first synchronous gear is fixedly installed on the outer surface of the second connecting rod. The hinge point between the first synchronous gear and the second connecting rod and the first guide sleeve is coaxially arranged. A second synchronous gear is installed on the outer surface of the third connecting rod. The installation position of the second synchronous gear is adjustable along its circumference. The hinge point between the second synchronous gear and the third connecting rod and the first guide sleeve is coaxially arranged. The first synchronous gear and the second synchronous gear mesh and transmit power together.

[0011] Furthermore, the side plate is longitudinally slidably connected to the welding rocker arm via a guide assembly. The guide assembly includes a longitudinal guide rod and a guide hole. The side plate has a guide hole that passes through its upper and lower ends. The welding rocker arm is fixedly provided with a longitudinal guide rod. The guide hole is adapted to the longitudinal guide rod. The side plate is sleeved on the longitudinal guide rod through the guide hole and the two slide longitudinally together. A stop block is fixedly installed on the welding rocker arm at the bottom of the longitudinal guide rod to stop the downward movement of the side plate.

[0012] Furthermore, the rolling drive mechanism includes a circular cam, a second linear guide pair, a second slide, a synchronous belt, a synchronous driving pulley, a synchronous driven pulley, a synchronous driving shaft, a second guide roller, and a motion conversion assembly. Multiple second slides are arranged corresponding to multiple welded rocker arms. The second slides are slidably connected to the outer circumferential surface of the annular support plate via the second linear guide pair and can slide along the axial direction of the turntable. The annular support plate is coaxially fixedly mounted on the turntable. A rotatable second guide roller is mounted at the lower end of the second slide. The circular cam is fixedly arranged within the annular support plate and coaxially spaced from the turntable. A second ring is provided on the outer circumferential surface of the circular cam to match the second guide roller. The second guide roller is embedded in the second annular guide groove and the two roll in cooperation. When the second guide roller rolls in the second annular guide groove, it can drive the second slide to slide. The synchronous driven wheel is rotatably mounted on the fixed seat, which is fixedly mounted on the annular support plate. The synchronous driving wheel is fixedly mounted on the synchronous driving shaft, which is rotatably mounted on the hinge seat and coaxially set with the hinge point between the hinge seat and the welding rocker arm. The synchronous driven wheel is driven by the synchronous driving wheel through the synchronous belt. The second slide is fixedly connected to the synchronous belt. When the synchronous driving shaft rotates, the motion conversion component can drive the second guide sleeve to slide back and forth.

[0013] Furthermore, the motion conversion assembly includes a driving gear, a driven gear, a drive shaft, and a drive linkage. The driving gear is fixedly mounted on the synchronous drive shaft, and the driving gear meshes with the driven gear for transmission. The driven gear is fixedly mounted on the drive shaft, and the drive shaft is rotatably mounted on the welded rocker arm. One end of the drive linkage is rotatably connected to the eccentric shaft of the drive shaft, and the other end of the drive linkage is hinged to the second guide sleeve. There are two drive linkages symmetrically arranged on the left and right sides of the second guide sleeve, and the side plate has a notch for the drive linkage to pass through.

[0014] As described above, the novel ultrasonic welding equipment provided by this utility model has the following beneficial effects: The welding rocker arm is driven by a flipping drive mechanism to flip and open. The welding rocker arm closes at the beginning of the wrap angle, allowing the toothed plate to begin welding the material to be welded between the ultrasonic welding body and the rocker arm. At the end of the wrap angle, the welding rocker arm opens, moving the toothed plate away from the ultrasonic welding body, thus ending the welding. This maximizes the utilization of the entire wrap angle area of ​​the material to be welded, achieving maximum welding time. Furthermore, the rolling drive mechanism drives the welding surface of the toothed plate to perform a non-slip rolling motion, thereby achieving rolling welding of the material to be welded. This new ultrasonic welding equipment significantly improves the welding efficiency per unit point. It utilizes a large-diameter, arc-shaped toothed plate for the welding surface, resulting in a larger pre-welding range compared to smaller arc diameters. This allows for the welding of difficult-to-weld materials, such as hot air cloth, and the welding force reaches the maximum material strength. Consequently, fewer ultrasonic welding bodies can be used, achieving higher production speeds, higher welding strength, reduced costs, and increased efficiency. This new ultrasonic welding equipment overcomes the shortcomings of uneven and weak welds in existing open-type welding, as well as the short welding time of existing roll-type welding. It fully utilizes corner welding, greatly improving welding time, and has a pre-welding function, enabling the welding of difficult-to-weld materials. Attached Figure Description

[0015] Figure 1 This is a simplified structural diagram of a novel ultrasonic welding device according to this utility model.

[0016] Figure 2 This is a partial structural schematic diagram of a novel ultrasonic welding device according to the present invention.

[0017] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the welding rocker arm.

[0018] Figure 4 This is a schematic diagram of a planar cam.

[0019] Figure 5 This is a structural diagram of the side panel.

[0020] Figure 6 This is a schematic diagram of pre-welding for roll forming.

[0021] In the diagram: 1-Turntable; 11-Annular mounting base; 12-Hinged base; 13-Annular support plate; 2-Ultrasonic welding body; 3-Welding rocker arm; 31-Top plate; 32-Side plate; 321-Notch; 331-Longitudinal guide rod; 332-Guide hole; 333-Stop block; 4-Tilting drive mechanism; 41-Planar cam; 411-First annular guide groove; 42-First linear guide pair; 43-First slide table; 44-First connecting rod; 45-First guide roller; 5-Rolling transmission mechanism; 51-Connecting plate; 52-Arc-shaped mounting plate; 53-Synchronous linkage assembly; 531-Transverse guide rod; 532-First guide sleeve; 533-Second guide sleeve; 5331-Adjusting nut; 534-Second connecting rod; 535-Third connecting rod; 536-Fourth connecting rod; 537-Fifth connecting rod; 538-Compression spring; 539 1-First synchronous gear; 5392-Second synchronous gear; 54-Restricting rolling assembly; 541-Arc-shaped gear plate; 542-Rack; 6-Toothed plate; 61-Welding surface; 7-Rolling drive mechanism; 71-Circular cam; 711-Second annular guide groove; 72-Second linear guide pair; 73-Second slide table; 74-Synchronous belt; 75-Synchronous driving wheel; 76-Synchronous driven wheel; 761-Fixed seat; 77-Synchronous driving shaft; 78-Second guide roller; 79-Motion conversion assembly; 791-Driving gear; 792-Driven gear; 793-Drive shaft; 7931-Eccentric shaft; 794-Drive connecting rod; 81-Positioning block; 82-Support seat; 9-Material to be welded; 91-Start of wrap angle; 92-End of wrap angle; 93-Pre-welding range; 94-Maximum welding pressure; 95-Unit spot welding length. Detailed Implementation

[0022] The present invention will be further described below through specific embodiments.

[0023] like Figures 1 to 6As shown, the present invention discloses a novel ultrasonic welding device, comprising a rotating turntable 1, a coaxially arranged annular mounting base 11 fixed on one end face of the turntable 1, a plurality of ultrasonic welding bodies 2 fixedly mounted on the outer circumferential surface of the annular mounting base 11 along its circumferential direction, a plurality of spaced-apart hinge seats 12 fixedly mounted on the outer circumferential surface of the turntable 1 along its circumferential direction, and welding rocker arms 3 hinged to the hinge seats 12. The plurality of ultrasonic welding bodies 2 and the plurality of welding rocker arms 3 are arranged in a one-to-one correspondence. The welding rocker arms 3 are driven by a flipping drive mechanism 4 to perform flipping and opening / closing movements. A rolling transmission mechanism 5 is provided inside the welding rocker arm 3. The rolling transmission mechanism 5 is provided with a toothed plate 6 that cooperates with the ultrasonic welding body 2. The welding surface 61 of the toothed plate 6 is a large-diameter arc surface. The rolling transmission mechanism 5 is driven by a rolling drive mechanism 7 to drive the welding surface 61 of the toothed plate 6 to perform rolling movements.

[0024] The welding rocker arm 3 is driven by the flipping drive mechanism 4 to flip and open. The welding rocker arm 3 closes at the beginning of the wrap angle 91, allowing the toothed plate 6 to begin welding the material 9 sandwiched between the ultrasonic welding body 2. The welding rocker arm 3 opens at the end of the wrap angle 92, moving the toothed plate 6 away from the ultrasonic welding body 2, thus ending the welding. This maximizes the utilization of the entire wrap angle area of ​​the material 9, achieving maximum welding time. The rolling drive mechanism 7 drives the rolling transmission mechanism 5 to make the welding surface 61 of the toothed plate 6 roll without slippage, thus achieving a rolling welding method for the material 9, and greatly... This significantly improves the welding efficiency per unit point. Simultaneously, the welding surface 61 of the toothed plate 6, with its large-diameter arc shape, provides a larger pre-welding range 93 compared to smaller arc diameters. This allows for the welding of difficult-to-weld materials, such as hot air cloth, and the welding force reaches the maximum material strength. Therefore, fewer ultrasonic welding bodies 2 can be used, achieving higher production speeds, higher welding strength, reduced costs, and increased efficiency. Consequently, this novel ultrasonic welding equipment overcomes the shortcomings of uneven and weak welding in existing open-type welding, as well as the short welding time of existing roll welding. It fully utilizes corner welding, greatly improving welding time, and has a pre-welding function, enabling the welding of difficult-to-weld materials.

[0025] Preferably, the number of ultrasonic welding bodies 2 and welding rocker arms 3 are both 6-10.

[0026] In addition, the arc length of the welding surface 61 of the toothed plate 6 is slightly larger than the length to be welded on the material 9 to be welded, and the welding surface 61 of the toothed plate 6 is provided with a plurality of patterned teeth.

[0027] In the contact between a circle and a straight line, theoretically it is a tangential contact, and the pressure only exists at the tangential point. However, for the material to be welded 9 with a certain thickness, the pressure at the tangential point is the greatest, which is the point of maximum welding pressure 94. The pre-welding range 93 is defined by a certain area on both sides of the tangential point. The welding pressure decreases from the tangential point outwards, and the larger the arc diameter, the larger the pre-welding range 93, which is directly proportional to the arc diameter. For example, if the diameter of the original welding wheel is 100mm, and the arc diameter of the welding surface 61 of the toothed plate 6 is 1000mm, then the difference in their pre-welding ranges 93 is tenfold. Considering the welding time per unit point welding length 95, the welding time from the start of pre-welding to the maximum welding pressure also differs by a tenfold. Figure 6 As shown, the denser the lines, the greater the welding pressure.

[0028] The flipping drive mechanism 4 includes a planar cam 41, a first linear guide pair 42, a first slide 43, a first connecting rod 44, and a first guide roller 45. Multiple first slides 43 are arranged corresponding to multiple welding rocker arms 3. Each first slide 43 is slidably connected to the other end face of the turntable 1 via the first linear guide pair 42 and can slide radially along the turntable 1. One end of the first connecting rod 44 is hinged to the welding rocker arm 3, and the other end is hinged to the first slide 43. The first slide 43 is positioned away from the welding rocker arm 3. A rotatable first guide roller 45 is mounted on one side surface of the turntable 1. The planar cam 41 is fixedly disposed and coaxially spaced from the turntable 1. The planar cam 41 has a first annular guide groove 411 on the side surface near the first slide table 43 that is adapted to the first guide roller 45. The first guide roller 45 is embedded in the first annular guide groove 411 and the two roll in cooperation. When the first guide roller 45 rolls in the first annular guide groove 411, it can drive the first slide table 43 to slide.

[0029] Correspondingly, the turntable 1 is fixedly mounted on the main shaft, which is rotatably mounted on the fixed plate via bearings and driven to rotate by a drive motor. When the turntable 1 rotates, the first slide 43 can rotate together with the turntable 1, thereby driving the first guide roller 45 to roll in the first annular guide groove 411. Through the setting of the rolling path of the first annular guide groove 411, and the fixed setting of the planar cam 41, and in conjunction with the guiding effect of the first linear guide pair 42 on the first slide 43, the relative position of the first guide roller 45 and the center of the planar cam 41 can change, thereby driving the first slide 43 to slide back and forth along the radial direction of the turntable 1. Through the linkage of the first connecting rod 44, the welding rocker arm 3 can be driven to perform the opening and closing motion of flipping up and down.

[0030] Correspondingly, the first annular guide groove 411 includes a small arc segment, a right arc transition segment, a large arc segment, and a left arc transition segment connected end to end. When the first guide roller 45 rolls in the small arc segment, the welding rocker arm 3 remains in the open state. When the first guide roller 45 rolls in the right arc transition segment, the welding rocker arm 3 begins to close and swings to the downward position. At this time, the position of the turntable 1 is exactly at the beginning 91 of the wrap corner of the material 9 to be welded. When the first guide roller 45 rolls in the large arc segment, the welding rocker arm 3 remains in the closed state. When the first guide roller 45 rolls in the right arc transition segment, the welding rocker arm 3 begins to open and swings to the upward position. At this time, the position of the turntable 1 is exactly at the end 92 of the wrap corner of the material 9 to be welded.

[0031] Accordingly, the first linear guide pair 42 includes a first guide rail and a first slider. The first guide rail is fixedly installed on the turntable 1, and the first slider is fixedly installed on the first slide table 43. The first slider is adapted to the first guide rail and the two slide in a sliding fit, thereby playing a good guiding role in the sliding of the first slide table 43 and effectively ensuring the stability and smoothness of the sliding of the first slide table 43.

[0032] Multiple positioning blocks 81 are provided on the outer circumferential surface of the annular mounting base 11 near the turntable 1. Each positioning block 81 corresponds to one of the multiple ultrasonic welding bodies 2. The positioning blocks 81 are fixedly mounted on the support base 82, which is fixedly located on the outer circumferential surface of the annular mounting base 11. The upper end face of the positioning block 81 is flush with the upper end face of the ultrasonic welding body 2 and is used to position the toothed plate 6 when it is flipped down. When the toothed plate 6 flips down to the pressing position along with the welding rocker arm 3, the toothed plate 6 first contacts the positioning block 81. In this way, the impact force of the welding rocker arm 3 pressing down will act on the positioning block 81 instead of directly on the ultrasonic welding body 2, effectively ensuring the long-term stable use of the ultrasonic welding body 2 and preventing damage.

[0033] The rolling transmission mechanism 5 includes a connecting plate 51, an arc-shaped mounting plate 52, a synchronous linkage component 53, and a rolling restriction component 54. The arc-shaped mounting plate 52 and the connecting plate 51 are respectively disposed on the upper and lower sides of the synchronous linkage component 53. The toothed plate 6 is fixedly installed on the lower end of the connecting plate 51. The outer arc surface of the arc-shaped mounting plate 52 has the same arc diameter as the welding surface 61 of the toothed plate 6 and the two are symmetrically arranged. The arc diameter of the welding surface 61 is not less than 1000mm. The outer arc surface of the arc-shaped mounting plate 52 rolls and abuts against the lower end surface of the upper top plate 31 of the welding rocker arm 3, and the rolling restriction component 54 is provided between the two. The synchronous linkage component 53 performs a linkage action under the drive of the rolling drive mechanism 7 and drives the arc-shaped mounting plate 52 to roll under the rolling restriction of the rolling restriction component 54, so that the toothed plate 6 follows the arc-shaped mounting plate 52 to roll synchronously.

[0034] To address the technical challenge of enabling the toothed block with a large arc diameter welding surface 61 to roll, firstly, the synchronous linkage component 53, driven by the rolling drive mechanism 7, can drive the arc-shaped mounting plate 52 and the toothed plate 6 to move. Simultaneously, the arc-shaped mounting plate 52, restricted by the rolling restriction component 54, can only perform pure rolling motion on the upper top plate 31. Secondly, the synchronous linkage component 53 also plays a role in synchronizing the arc-shaped mounting plate 52 and the toothed plate 6, making the movements of the toothed plate 6 and the arc-shaped mounting plate 52 symmetrical. That is, when the arc-shaped mounting plate 52 performs pure rolling motion, the welding surface 61 of the toothed plate 6 also performs pure rolling motion, thereby achieving pure rolling motion of the toothed plate 6 with a large arc diameter welding surface 61 without slippage.

[0035] Furthermore, the arc diameter of the welding surface 61 is no greater than 2000mm. Therefore, compared with the 100mm diameter of the welding wheel of the existing roll welding, the arc diameter of the welding surface 61 of the toothed plate 6 in this application is 10 to 20 times larger. The larger arc diameter has a larger pre-welding range 93 compared with the smaller arc diameter.

[0036] The rolling restriction assembly 54 includes an arc-shaped gear plate 541 and a rack 542. The arc-shaped gear plate 541 is fixedly installed on both the left and right sides of the arc-shaped mounting plate 52, and the rack 542 is installed on both the left and right sides of the upper top plate 31. The installation position of the rack 542 is adjustable along its length. The arc-shaped gear plate 541 and the rack 542 are adapted to each other and mesh with each other. The pitch circle diameter of the arc-shaped gear plate 541 is the same as the arc diameter of the outer arc surface of the arc-shaped mounting plate 52. Thus, through the meshing and transmission of the arc-shaped gear plate 541 and the rack 542, the arc-shaped gear plate 541 can be restricted to pure rolling motion on the rack 542 without slippage, thereby further effectively ensuring that the welding surface 61 of the toothed plate 6 performs pure rolling motion.

[0037] By making the mounting position of the rack 542 adjustable, the rack 542 is provided with a plurality of first elongated holes, and the upper top plate 31 is provided with a plurality of first threaded holes. First locking screws are inserted into the first elongated holes and the corresponding first threaded holes, and the rack 542 is locked and fixed to the upper top plate 31 by the first locking screws. The first elongated holes facilitate the adjustment of the mounting position of the rack 542, thereby facilitating the elimination of the gap between the rack 542 and the arc-shaped gear plate 541 and ensuring the meshing accuracy between the rack 542 and the arc-shaped gear plate 541.

[0038] The synchronous linkage assembly 53 includes a transverse guide rod 531, a first guide sleeve 532, a second guide sleeve 533, a second connecting rod 534, a third connecting rod 535, a fourth connecting rod 536, a fifth connecting rod 537, and a compression spring 538. The two ends of the transverse guide rod 531 are respectively mounted on the side plates 32 on the front and rear sides of the welding rocker arm 3. The first guide sleeve 532, the compression spring 538, and the second guide sleeve 533 are slidably sleeved on the transverse guide rod 531 from front to back. An adjusting nut 5331 is threaded onto the second guide sleeve 533. The compression spring 538 elastically abuts against the first guide sleeve 532 and the adjusting nut 5331. The second connecting rod 534, the third connecting rod 535, the fourth connecting rod 536, and the fifth connecting rod 537 are connected in series. There are two connecting rods 537, symmetrically arranged on the left and right sides of the transverse guide rod 531. One end of the second connecting rod 534 is hinged to one end of the arc-shaped mounting plate 52 and the other end is hinged to the first guide sleeve 532. One end of the third connecting rod 535 is hinged to one end of the connecting plate 51 and the other end is hinged to the first guide sleeve 532. One end of the fourth connecting rod 536 is hinged to one end of the arc-shaped mounting plate 52 and the other end is hinged to the second guide sleeve 533. One end of the fifth connecting rod 537 is hinged to one end of the connecting plate 51 and the other end is hinged to the second guide sleeve 533. The second connecting rod 534 and the third connecting rod 535 are arranged symmetrically from top to bottom, and the fourth connecting rod 536 and the fifth connecting rod 537 are arranged symmetrically from top to bottom.

[0039] The compression spring 538 applies a certain elastic force to the first guide sleeve 532 and the second guide sleeve 533 on both sides. The second connecting rod 534 and the fourth connecting rod 536 press the arc-shaped mounting plate 52 into contact with the upper top plate 31 to withstand pressure. When the rolling drive mechanism 7 drives the second guide sleeve 533 to slide on the transverse guide rod 531, it can compress the compression spring 538 and push the first guide sleeve 532 to slide together on the transverse guide rod 531. At the same time, the second guide sleeve 533 is connected to the arc-shaped mounting plate 52 and one end of the toothed plate 6 through the fourth connecting rod 536 and the fifth connecting rod 537 respectively. The first guide sleeve 532 is connected to the second connecting rod 534 and the... The third link 535 is connected to the other end of the arc-shaped mounting plate 52 and the toothed plate 6, thereby enabling the arc-shaped mounting plate 52 and the toothed plate 6 to move respectively. At the same time, since the arc-shaped mounting plate 52 can only perform pure rolling motion on the upper top plate 31 under the restriction of the rolling restriction component 54, and since the second link 534 and the third link 535 are symmetrically arranged and synchronously linked, and the fourth link 536 and the fifth link 537 are symmetrically arranged and synchronously linked, the arc-shaped mounting plate 52 and the toothed plate 6 can be synchronously linked, and the movement of the toothed plate 6 and the arc-shaped mounting plate 52 is symmetrical, thereby causing the welding surface 61 of the toothed plate 6 to also perform pure rolling motion.

[0040] Furthermore, by rotating the adjusting nut 5331, the compression length of the compression spring 538 can be adjusted, thereby adjusting the magnitude of the elastic force of the compression spring 538.

[0041] Preferably, both the fourth link 536 and the fifth link 537 are arc-shaped to better accommodate the hinged installation between the drive link 794 and the second guide sleeve 533. The arc length of the fourth link 536 is the same as that of the fifth link 537, and the length of the second link 534 is the same as that of the third link 535.

[0042] A first synchronous gear 5391 is fixedly installed on the outer surface of the second connecting rod 534. The hinge point between the first synchronous gear 5391 and the second connecting rod 534 and the first guide sleeve 532 is coaxially arranged. A second synchronous gear 5392 is installed on the outer surface of the third connecting rod 535. The installation position of the second synchronous gear 5392 is adjustable along its circumference. The hinge point between the second synchronous gear 5392 and the third connecting rod 535 and the first guide sleeve 532 is coaxially arranged. The first synchronous gear 5391 and the second synchronous gear 5392 mesh and transmit power. The number of teeth of the first synchronous gear 5391 is the same as the number of teeth of the second synchronous gear 5392. Through the meshing and transmission of the first synchronous gear 5391 and the second synchronous gear 5392, the synchronicity of the swing between the second connecting rod 534 and the third connecting rod 535 can be effectively ensured, so as to better ensure that when the arc-shaped mounting plate 52 performs pure rolling motion, the welding surface 61 of the toothed plate 6 performs pure rolling motion.

[0043] By making the installation position of the second synchronous gear 5392 adjustable, the second synchronous gear 5392 is provided with a second arc-shaped hole, and the third connecting rod 535 is provided with a second threaded hole. A second locking screw passes through the second arc-shaped hole and the second threaded hole, and the second synchronous gear 5392 is locked and fixed to the third connecting rod 535 by the second locking screw. The second arc-shaped hole facilitates the adjustment of the installation position of the second synchronous gear 5392, thereby eliminating the gap between the second synchronous gear 5392 and the first synchronous gear 5391 and ensuring the meshing accuracy between the second synchronous gear 5392 and the first synchronous gear 5391.

[0044] The side plate 32 is longitudinally slidably connected to the welding rocker arm 3 via a guide assembly. The guide assembly includes a longitudinal guide rod 331 and a guide hole 332. The side plate 32 has the guide hole 332 penetrating its upper and lower ends. The longitudinal guide rod 331 is fixedly mounted on the welding rocker arm 3. The guide hole 332 is adapted to the longitudinal guide rod 331. The side plate 32 is sleeved on the longitudinal guide rod 331 through the guide hole 332, and the two slide longitudinally together. A stop block 333 is fixedly mounted on the welding rocker arm 3 at the bottom of the longitudinal guide rod 331 to stop the downward movement of the side plate 32. Since the compression spring 538 is provided between the first guide sleeve 532 and the second guide sleeve 533, and the first guide sleeve 532 and the second guide sleeve 533 are slidably engaged with the transverse guide rod 531, the... Therefore, under the elastic force applied by the compression spring 538, the first guide sleeve 532 and the second guide sleeve 533 move to both sides respectively. At the same time, the arc-shaped mounting plate 52 is pressed onto the upper top plate 31 by the second connecting rod 534 and the fourth connecting rod 536, and the two side plates 32 move downward and are blocked by the stop block 333. When the welding rocker arm 3 flips downward to the pressing position, the toothed plate 6 contacts the positioning block 81 and causes the toothed plate 6 to retract inward along the vertical direction of the welding rocker arm 3. This causes the toothed plate 6 to be pressed over a certain distance to ensure the application of welding pressure. At this time, the movement of the arc-shaped mounting plate 52 and the toothed plate 6 is still symmetrical. When the arc-shaped mounting plate 52 is in pure rolling motion, the welding surface 61 of the toothed plate 6 is still in pure rolling motion.

[0045] The rolling drive mechanism 7 includes a circular cam 71, a second linear guide pair 72, a second slide 73, a synchronous belt 74, a synchronous driving wheel 75, a synchronous driven wheel 76, a synchronous driving shaft 77, a second guide roller 78, and a motion conversion component 79. Multiple second slides 73 are arranged corresponding to multiple welding rocker arms 3. The second slides 73 are slidably connected to the outer circumferential surface of the annular support plate 13 via the second linear guide pair 72 and can slide along the axial direction of the turntable 1. The annular support plate 13 is coaxially fixedly mounted on the turntable 1. A rotatable second guide roller 78 is mounted on the lower end of the second slide 73. The circular cam 71 is fixedly arranged and located within the annular support plate 13 and coaxially spaced from the turntable 1. A second annular guide groove 711, adapted to the second guide roller 78, is provided on the outer circumferential surface of the circular cam 71. The roller 78 is embedded in the second annular guide groove 711 and the two roll in cooperation. When the second guide roller 78 rolls in the second annular guide groove 711, it can drive the second slide table 73 to slide. The synchronous driven wheel 76 is rotatably mounted on the fixed seat 761. The fixed seat 761 is fixedly mounted on the annular support plate 13. The synchronous driving wheel 75 is fixedly mounted on the synchronous driving shaft 77. The synchronous driving shaft 77 is rotatably mounted on the hinge seat 12 and is coaxially arranged with the hinge point between the hinge seat 12 and the welding rocker arm 3. The synchronous driven wheel 76 is driven by the synchronous belt 74. The second slide table 73 is fixedly connected to the synchronous belt 74. When the synchronous driving shaft 77 rotates, the motion conversion component 79 can drive the second guide sleeve 533 to slide back and forth.

[0046] When the turntable 1 rotates, the annular support plate 13 rotates along with the turntable 1, thereby driving the second guide roller 78 to roll in the second annular guide groove 711. Through the setting of the rolling path of the second annular guide groove 711, and the fixed setting of the circular cam 71, and in conjunction with the guiding effect of the second linear guide pair 72 on the second slide table 73, the relative position between the second guide roller 78 and the turntable 1 can change. This can drive the second slide table 73 to slide back and forth along the axial direction of the turntable 1, and pull the synchronous belt 74 to make the synchronous drive wheel 75 rotate, thereby driving the synchronous drive shaft 77 to rotate.

[0047] Correspondingly, after the second annular guide groove 711 is unfolded, it includes a first inclined section and a second inclined section connected end to end. The inclination direction of the first inclined section is opposite to that of the second inclined section. When the welding rocker arm 3 swings to the pressing position, the position of the turntable 1 is exactly at the beginning 91 of the wrap angle of the material to be welded 9. The second guide roller 78 will roll in the first inclined section and drive the second guide sleeve 533 to slide towards the side closer to the first guide sleeve 532, so that the welding surface 61 of the toothed plate 6 begins to roll and weld from the inside to the outside. When it reaches the outermost side, the position of the turntable 1 is exactly at the end 92 of the wrap angle of the material to be welded 9. When the welding rocker arm 3 begins to open, the second guide roller 78 will roll in the second inclined section and drive the second guide sleeve 533 to slide away from the side away from the first guide sleeve 532, so that the welding surface 61 of the toothed plate 6 begins to roll back to the initial position, completing one cycle.

[0048] Correspondingly, the second linear guide pair 72 includes a second guide rail and a second slider. The second guide rail is fixedly installed on the annular support plate 13, and the second slider is fixedly installed on the second slide table 73. The second slider is adapted to the second guide rail and the two slide in a sliding fit, thereby playing a good guiding role in the sliding of the second slide table 73 and effectively ensuring the stability and smoothness of the sliding of the second slide table 73.

[0049] The motion conversion assembly 79 includes a driving gear 791, a driven gear 792, a drive shaft 793, and a drive connecting rod 794. The driving gear 791 is fixedly mounted on the synchronous driving shaft 77, and the driving gear 791 meshes with the driven gear 792. The driven gear 792 is fixedly mounted on the drive shaft 793, which is rotatably mounted on the welding rocker arm 3. One end of the drive connecting rod 794 is rotatably connected to the eccentric shaft 7931 of the drive shaft 793. The eccentric shaft 7931 is located at the eccentric point of the drive shaft 793, and their central axes do not coincide. The other end of the drive connecting rod 794 is connected to the second guide. The second guide sleeve 533 is hinged together. The two drive connecting rods 794 are symmetrically arranged on the left and right sides of the second guide sleeve 533. The side plate 32 is provided with a notch 321 for the drive connecting rods 794 to pass through, so as to avoid interference. With this structure, when the synchronous drive shaft 77 rotates, the drive shaft 793 can be driven to rotate through the meshing transmission of the drive gear 791 and the driven gear 792. This drives the eccentric shaft 7931 to rotate eccentrically relative to the drive shaft 793. Through the linkage of the drive connecting rods 794, the second guide sleeve 533 can be driven to slide back and forth.

[0050] The method of using the novel ultrasonic welding equipment described in this utility model is as follows:

[0051] During operation, the turntable 1 is driven by a drive motor to rotate, thereby causing the welding rocker arm 3 to perform an up-and-down flipping opening and closing motion, and causing the welding surface 61 of the toothed plate 6 to perform a pure rolling motion back and forth. When the welding rocker arm 3 flips down to close and swings to the pressing position, the position of the turntable 1 is exactly at the beginning of the corner 91 of the material to be welded 9, or slightly behind with some margin, and the toothed plate 6 contacts the positioning block 81 and presses to a certain depth. At the same time, the welding surface 61 of the toothed plate 6 begins to roll and weld, rolling from the inside to the outside. When welding to the outermost side, the position of the turntable 1 is exactly at the end of the corner 92 of the material to be welded 9, or slightly ahead with some margin. In the area outside the corner, the welding rocker arm 3 begins to open and swing to the lifting position. At the same time, the welding surface 61 of the toothed plate 6 begins to roll back from the outside to the initial position, completing one cycle.

[0052] The above are only some specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A novel ultrasonic welding device, comprising a rotating turntable, a coaxially arranged annular mounting base fixedly mounted on one end face of the turntable, a plurality of ultrasonic welding bodies spaced apart being fixedly mounted on the outer circumferential surface of the annular mounting base along its circumferential direction, a plurality of spaced-apart hinge seats fixedly mounted on the outer circumferential surface of the turntable along its circumferential direction, welding rocker arms hinged to the hinge seats, the plurality of ultrasonic welding bodies and the plurality of welding rocker arms being arranged in a one-to-one correspondence, the welding rocker arms being driven by a flipping drive mechanism to perform flipping opening and closing movements, characterized in that: The welding rocker arm is equipped with a rolling transmission mechanism, and the rolling transmission mechanism is equipped with a toothed plate that cooperates with the ultrasonic welding body. The welding surface of the toothed plate is a large-diameter arc surface. The rolling transmission mechanism is driven by a rolling drive mechanism and drives the welding surface of the toothed plate to roll.

2. The novel ultrasonic welding equipment according to claim 1, characterized in that: The flipping drive mechanism includes a planar cam, a first linear guide pair, a first slide, a first connecting rod, and a first guide roller. Multiple first slides are arranged corresponding to the multiple welding rocker arms. Each first slide is slidably connected to the other end face of the turntable via the first linear guide pair and can slide radially along the turntable. One end of the first connecting rod is hinged to the welding rocker arm, and the other end is hinged to the first slide. A rotatable first guide roller is mounted on the surface of the first slide away from the turntable. The planar cam is fixedly arranged and coaxially spaced from the turntable. A first annular guide groove adapted to the first guide roller is provided on the surface of the planar cam near the first slide. The first guide roller is embedded in the first annular guide groove, and the two roll in cooperation. When the first guide roller rolls in the first annular guide groove, it can drive the first slide to slide.

3. The novel ultrasonic welding equipment according to claim 1, characterized in that: Multiple positioning blocks are provided on the outer circumferential surface of the annular mounting base near the turntable. Each positioning block corresponds to one of the multiple ultrasonic welding bodies. The positioning blocks are fixedly installed on the support base, which is fixedly located on the outer circumferential surface of the annular mounting base. The upper end face of the positioning block is flush with the upper end face of the ultrasonic welding body and is used to position the toothed plate by flipping and pressing it down.

4. The novel ultrasonic welding equipment according to claim 1, characterized in that: The rolling transmission mechanism includes a connecting plate, an arc-shaped mounting plate, a synchronous linkage component, and a rolling restriction component. The arc-shaped mounting plate and the connecting plate are respectively disposed on the upper and lower sides of the synchronous linkage component. The toothed plate is fixedly installed on the lower end of the connecting plate. The outer arc surface of the arc-shaped mounting plate has the same arc diameter as the welding surface of the toothed plate and the two are symmetrically arranged. The arc diameter of the welding surface is not less than 1000mm. The outer arc surface of the arc-shaped mounting plate rolls and abuts against the lower end surface of the upper top plate of the welding rocker arm, and the rolling restriction component is provided between the two. The synchronous linkage component performs a linkage action under the drive of the rolling drive mechanism and drives the arc-shaped mounting plate to roll under the rolling restriction component, so that the toothed plate follows the arc-shaped mounting plate to roll synchronously.

5. A novel ultrasonic welding device according to claim 4, characterized in that: The rolling restraint assembly includes an arc-shaped gear plate and a rack. The arc-shaped gear plate is fixedly installed on both the left and right sides of the arc-shaped mounting plate, and the rack is installed on both the left and right sides of the upper top plate. The installation position of the rack is adjustable along its length. The arc-shaped gear plate and the rack are adapted to each other and mesh with each other for transmission. The pitch circle diameter of the arc-shaped gear plate is the same as the arc diameter of the outer arc surface of the arc-shaped mounting plate.

6. A novel ultrasonic welding device according to claim 4, characterized in that: The synchronous linkage assembly includes a transverse guide rod, a first guide sleeve, a second guide sleeve, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, and a compression spring. The two ends of the transverse guide rod are respectively mounted on the front and rear side plates of the welding rocker arm. The first guide sleeve, the compression spring, and the second guide sleeve are slidably fitted onto the transverse guide rod from front to back. An adjusting nut is threaded onto the second guide sleeve. The compression spring elastically abuts against the first guide sleeve and the adjusting nut. The second, third, fourth, and fifth connecting rods are all in pairs and symmetrically arranged. On the left and right sides of the transverse guide rod, one end of the second connecting rod is hinged to one end of the arc-shaped mounting plate and the other end is hinged to the first guide sleeve; one end of the third connecting rod is hinged to one end of the connecting plate and the other end is hinged to the first guide sleeve; one end of the fourth connecting rod is hinged to one end of the arc-shaped mounting plate and the other end is hinged to the second guide sleeve; one end of the fifth connecting rod is hinged to one end of the connecting plate and the other end is hinged to the second guide sleeve. The second connecting rod and the third connecting rod are arranged symmetrically in the upper and lower parts, and the fourth connecting rod and the fifth connecting rod are arranged symmetrically in the upper and lower parts.

7. A novel ultrasonic welding device according to claim 6, characterized in that: A first synchronous gear is fixedly installed on the outer surface of the second connecting rod. The hinge point between the first synchronous gear and the second connecting rod and the first guide sleeve is coaxially arranged. A second synchronous gear is installed on the outer surface of the third connecting rod. The installation position of the second synchronous gear is adjustable along its circumference. The hinge point between the second synchronous gear and the third connecting rod and the first guide sleeve is coaxially arranged. The first synchronous gear and the second synchronous gear mesh and transmit power together.

8. A novel ultrasonic welding equipment according to claim 6, characterized in that: The side plate is longitudinally slidably connected to the welding rocker arm via a guide assembly. The guide assembly includes a longitudinal guide rod and a guide hole. The guide hole extends through both the upper and lower ends of the side plate. The longitudinal guide rod is fixedly mounted on the welding rocker arm. The guide hole is adapted to the longitudinal guide rod. The side plate is sleeved on the longitudinal guide rod through the guide hole, and the two slide longitudinally together. A stop block is fixedly installed on the welding rocker arm at the bottom of the longitudinal guide rod to stop the downward movement of the side plate.

9. A novel ultrasonic welding equipment according to claim 6, characterized in that: The rolling drive mechanism includes a circular cam, a second linear guide pair, a second slide, a synchronous belt, a synchronous driving pulley, a synchronous driven pulley, a synchronous driving shaft, a second guide roller, and a motion conversion assembly. Multiple second slides are arranged corresponding to the multiple welded rocker arms. Each second slide is slidably connected to the outer circumferential surface of the annular support plate via the second linear guide pair and can slide along the axial direction of the turntable. The annular support plate is coaxially fixedly mounted on the turntable. A rotatable second guide roller is mounted on the lower end of each second slide. The circular cam is fixedly arranged within the annular support plate and coaxially spaced from the turntable. A second annular guide groove adapted to the second guide roller is provided on the outer circumferential surface of the circular cam. The guide roller is embedded in the second annular guide groove and the two roll in cooperation. When the second guide roller rolls in the second annular guide groove, it can drive the second slide to slide. The synchronous driven wheel is rotatably mounted on the fixed seat. The fixed seat is fixedly mounted on the annular support plate. The synchronous driving wheel is fixedly mounted on the synchronous driving shaft. The synchronous driving shaft is rotatably mounted on the hinge seat and is coaxially arranged with the hinge point between the hinge seat and the welding rocker arm. The synchronous driven wheel is driven in cooperation with the synchronous driving wheel through the synchronous belt. The second slide is fixedly connected to the synchronous belt. When the synchronous driving shaft rotates, the motion conversion component can drive the second guide sleeve to reciprocate.

10. A novel ultrasonic welding equipment according to claim 9, characterized in that: The motion conversion assembly includes a driving gear, a driven gear, a drive shaft, and a drive link. The driving gear is fixedly mounted on the synchronous drive shaft, and the driving gear meshes with the driven gear. The driven gear is fixedly mounted on the drive shaft, which is rotatably mounted on the welded rocker arm. One end of the drive link is rotatably connected to the eccentric shaft of the drive shaft, and the other end of the drive link is hinged to the second guide sleeve. There are two drive links symmetrically arranged on the left and right sides of the second guide sleeve, and the side plate has a notch for the drive link to pass through.

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