Ultrasonic rolling welding device

Abstract

The utility model relates to the field of disposable hygienic products, in particular to an ultrasonic rolling welding device which comprises a machine frame, a rotating shaft, a main motor, a cam assembly and a welding mechanism. The welding mechanism comprises a first sliding rail, a first sliding seat capable of sliding along the first sliding rail, a swing arm arranged on the first sliding seat and a pattern roller assembly arranged at one end of the swing arm, the first sliding rail is arranged in the axial direction, and a sliding wheel set is arranged at the lower end of the first sliding seat and penetrates into the rail groove. The cam assembly is arranged on the rack and can slide along the track groove, an ultrasonic assembly is arranged on the portion, located on the axial side of the cam assembly, of the rack, when the rotating shaft rotates, the cam assembly is driven to rotate, the track groove is used for pushing the sliding wheel set, and therefore the pattern roller assembly slides along the first sliding rail. The technical problem that an existing ultrasonic welding device cannot achieve welding in a high-speed state is solved.

Description

Technical Field

[0001] The utility model relates to the field of disposable sanitary products, in particular to an ultrasonic rolling welding device. Background Art

[0002] At present, in the field of disposable sanitary products, especially in the production process of pull-up pants, the continuous waist material needs to be folded in half and then formed by composite welding. The composite process mainly includes two conventional methods: hot pressing welding and ultrasonic welding.

[0003] The process of hot pressing welding is as follows: First, the temperature is raised to a high temperature through a heating rod, and then the heat is transferred to the hot pressing roller. Then, the waist material is pressed together by a round roller with a pattern and an ordinary smooth roller to bond the multiple layers of material together. However, the waist products made by this hot pressing welding method have a rough touch, a slow welding speed, and relatively high energy consumption.

[0004] The process flow of ultrasonic welding is: through the high-frequency vibration of ultrasound, the material is placed between the ultrasonic welding head and the tooth block for continuous impact compounding. This method has the advantages of high efficiency, energy saving and adaptability to products of various specifications and sizes. For example, the new ultrasonic welding device and welding method of baby pull-up pants disclosed in Chinese Patent No.: CN201810653413.8 include a mounting base plate, an ultrasonic welding assembly, a welding support roller, a synchronous belt and a controller. A support plate is fixedly provided on the surface of the mounting base plate, and an ultrasonic welding assembly is fixedly connected to the lower surface of the support plate. A servo motor is fixedly provided below the support plate, and the servo motor is connected to the welding support roller through a coupling. Transmission rollers are also provided on the surface of the mounting base plate on both sides of the welding support roller, and the synchronous belt is laid on the surface of the welding support roller and the transmission roller, compared with the traditional thermal welding method.

[0005] However, during ultrasonic welding, since the ultrasonic components and the pattern roller components are closely fitted, the material delivery often remains unchanged, and the speed needs to be reduced, making it impossible to achieve ultrasonic welding at high speed. Utility Model Content

[0006] Therefore, in view of the above problems, the utility model proposes an ultrasonic rolling welding device, which solves the technical problem that the existing ultrasonic welding devices cannot achieve welding under high-speed conditions.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an ultrasonic rolling welding device, comprising a frame and a rotating shaft rotatably arranged on the frame, a main motor driving the rotating shaft, a cam assembly fixedly arranged on the rotating shaft, and a welding mechanism, the cam assembly is provided with a track groove, and the welding mechanism comprises a first slide rail arranged on the frame at a radial side of the cam assembly, a first sliding seat which can slide along the first slide rail, a swing arm arranged on the first sliding seat, and a pattern roller assembly arranged on one end of the swing arm, the first slide rail is arranged axially, a sliding wheel group is arranged on the lower end of the first sliding seat, the sliding wheel group penetrates into the track groove and can slide along the track groove, an ultrasonic assembly is arranged on the axial side of the cam assembly on the frame, when the rotating shaft rotates, the cam assembly is driven to rotate, so that the sliding wheel group is pushed by the track groove, so as to realize the sliding of the pattern roller assembly along the first slide rail.

[0008] Furthermore, a shaft sleeve is provided on the rotating shaft, a first servo motor is provided on the frame, the first servo motor is transmission-connected to one end of the shaft sleeve, a second slide rail is radially slidingly provided on the frame, a second sliding seat is provided on the second slide rail, the ultrasonic component is provided on the second sliding seat, a screw mechanism for driving the second sliding seat to slide is provided on the frame, and the other end of the shaft sleeve is transmission-connected to the screw mechanism.

[0009] Furthermore, the shaft sleeve is connected to the screw mechanism through a bevel gear or a helical gear transmission.

[0010] Furthermore, the pattern roller assembly includes a pattern roller body rotatably arranged on the swing arm, a rotating roller body rotatably arranged on the swing arm, and a synchronous belt covering the pattern roller body and the rotating roller body.

[0011] Furthermore, a tensioning wheel for tensioning the synchronous belt is provided on the swing arm, and the tensioning wheel can be adjusted up and down by means of bolt locking.

[0012] Furthermore, a second servo motor for driving the rotating roller body is arranged on the first sliding seat or the swing arm.

[0013] Furthermore, the welding mechanisms are divided into two groups, which are symmetrically arranged along the radial direction of the cam assembly.

[0014] Furthermore, the swing arm can slide up and down along the first sliding seat and be locked by a locking bolt.

[0015] By adopting the above technical solution, the beneficial effects of the utility model are:

[0016] 1. This solution uses the cam assembly to drive the cam assembly to rotate when the rotating shaft rotates, so that the track groove pushes the sliding wheel assembly to realize the sliding of the pattern roller assembly along the first slide rail. When the pattern roller assembly slides out, it can cooperate with the ultrasonic assembly to realize the cooperation between the ultrasonic assembly and the pattern roller assembly under the frequency state. In this solution, two welding mechanisms can be set, which are respectively arranged radially symmetrically along the cam assembly. Due to the use of the cam assembly, the first sliding seat can present high-precision reciprocating sliding, and can effectively improve work efficiency.

[0017] 2. Through the arrangement of the shaft sleeve, the first servo motor, the second slide rail, the second slide seat, and the screw mechanism, the ultrasonic component can slide up and down, thereby cooperating with the left and right sliding of the flower roller component to achieve better welding cooperation. Moreover, through the up and down sliding of the ultrasonic component, the welding thickness of the material can be adjusted. The shaft sleeve and the screw mechanism are driven by bevel gears or helical gears to achieve a relatively stable transmission connection.

[0018] 3. Through the arrangement of the pattern roller, the rotating roller and the synchronous belt, the pattern roller can be rotated stably to avoid slipping. The addition of the tensioning wheel can achieve a stable transmission connection between the pattern roller and the rotating roller. The second servo motor can be set to actively rotate the pattern roller, thereby achieving a better welding effect and better coordination with the ultrasonic component.

[0019] 4. The swing arm can slide up and down along the first sliding seat, and can be locked by the locking bolt, so as to cooperate with the up and down sliding of the ultrasonic component to realize the replacement of the diaper model. That is, when the size of the diaper becomes smaller, the first sliding seat slides toward the direction close to the rotation axis, and when the size of the diaper becomes larger, the first sliding seat slides away from the rotation axis. This can reduce costs and improve the simplicity of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the cooperation between the first sliding seat and the first sliding rail.

[0022] Reference numerals:

[0023] 1. Frame; 2. Rotating shaft; 3. Cam assembly; 31. Track groove; 41. First slide rail; 42. First sliding seat; 43. Swing arm; 44. Sliding wheel assembly; 45. Locking bolt; 5. Pattern roller assembly; 51. Pattern roller body; 52. Rotating roller body; 53. Synchronous belt; 54. Tensioner; 55. Second servo motor; 6. Ultrasonic assembly; 71. Bushing; 72. First servo motor; 73. Second slide rail; 74. Second sliding seat; 75. Screw mechanism; 76. Bevel gear. DETAILED DESCRIPTION

[0024] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0025] refer to Figure 1 , Figure 2 The present embodiment provides an ultrasonic rolling welding device, comprising a frame 1 and a rotating shaft 2 rotatably arranged on the frame 1, a main motor (not shown in the figure) driving the rotating shaft 2, a cam assembly 3 fixedly arranged on the rotating shaft 2, and a welding mechanism, wherein the cam assembly 3 is provided with a track groove 31, and the welding mechanism comprises a first slide rail 41 arranged on the frame 1 and located on a radial side of the cam assembly 3, a first sliding seat 42 that can slide along the first slide rail 41, a swing arm 43 arranged on the first sliding seat 42, and a flower-shaped roller assembly 5 arranged on one end of the swing arm 43, wherein the first slide rail 41 is arranged axially, and a sliding wheel group 44 is arranged on the lower end of the first sliding seat 42, wherein the sliding wheel group 44 penetrates into the track groove 31 and can slide along the track groove 31, and an ultrasonic assembly 6 is arranged on the frame 1 on an axial side of the cam assembly 3, and when the rotating shaft 2 rotates, the cam assembly 3 is driven to rotate, thereby using the track groove 31 to push the sliding wheel group 44, thereby realizing the sliding of the flower-shaped roller assembly 5 along the first slide rail 41.

[0026] A sleeve 71 is provided on the rotating shaft 2, a first servo motor 72 is provided on the frame 1, the first servo motor 72 is connected to one end of the sleeve 71, a second slide rail 73 is provided on the frame 1 to slide radially, a second slide seat 74 is provided on the second slide rail 73, the ultrasonic component 6 is provided on the second slide seat 74, a screw mechanism 75 for driving the second slide seat 74 to slide is provided on the frame 1, and the other end of the sleeve 71 is connected to the screw mechanism 75. The sleeve 71 is connected to the screw mechanism 75 through a bevel gear 76 or a helical gear.

[0027] The pattern roller assembly 5 includes a pattern roller body 51 rotatably arranged on the swing arm 43, a rotating roller body 52 rotatably arranged on the swing arm 43, and a synchronous belt 53 covering the pattern roller body 51 and the rotating roller body 52. ​​The swing arm 43 is provided with a tensioning wheel 54 for tensioning the synchronous belt 53, and the tensioning wheel 54 can be adjusted up and down by bolt locking. The first sliding seat 42 or the swing arm 43 is provided with a second servo motor 55 that drives the rotating roller body 52.

[0028] The welding mechanisms are divided into two groups, which are respectively arranged symmetrically along the radial direction of the cam assembly 3 .

[0029] The swing arm 43 can slide up and down along the first sliding seat 42 and be locked by a locking bolt 45 .

[0030] The first servo motor, the second servo motor, the ultrasonic component, and the patterned roller are all conventional accessories in this field.

[0031] The beneficial effects of the utility model are:

[0032] 1. This solution uses the cam assembly to drive the cam assembly to rotate when the rotating shaft rotates, so that the track groove pushes the sliding wheel assembly to realize the sliding of the pattern roller assembly along the first slide rail. When the pattern roller assembly slides out, it can cooperate with the ultrasonic assembly to realize the cooperation between the ultrasonic assembly and the pattern roller assembly under the frequency state. In this solution, two welding mechanisms can be set, which are respectively arranged radially symmetrically along the cam assembly. Due to the use of the cam assembly, the first sliding seat can present high-precision reciprocating sliding, and can effectively improve work efficiency.

[0033] 2. Through the arrangement of the shaft sleeve, the first servo motor, the second slide rail, the second slide seat, and the screw mechanism, the ultrasonic component can slide up and down, thereby cooperating with the left and right sliding of the flower roller component to achieve better welding cooperation. Moreover, through the up and down sliding of the ultrasonic component, the welding thickness of the material can be adjusted. The shaft sleeve and the screw mechanism are driven by bevel gears or helical gears to achieve a relatively stable transmission connection.

[0034] 3. Through the arrangement of the pattern roller, the rotating roller and the synchronous belt, the pattern roller can be rotated stably to avoid slipping. The addition of the tensioning wheel can achieve a stable transmission connection between the pattern roller and the rotating roller. The second servo motor can be set to actively rotate the pattern roller, thereby achieving a better welding effect and better coordination with the ultrasonic component.

[0035] 4. The swing arm can slide up and down along the first sliding seat, and can be locked by the locking bolt, so as to cooperate with the up and down sliding of the ultrasonic component to realize the replacement of the diaper model. That is, when the size of the diaper becomes smaller, the first sliding seat slides toward the direction close to the rotation axis, and when the size of the diaper becomes larger, the first sliding seat slides away from the rotation axis. This can reduce costs and improve the simplicity of maintenance.

[0036] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. An ultrasonic rolling welding device, characterized in that: The invention comprises a frame and a rotating shaft rotatably arranged on the frame, a main motor driving the rotating shaft, a cam assembly fixedly arranged on the rotating shaft, and a welding mechanism, wherein a track groove is arranged on the cam assembly, and the welding mechanism comprises a first slide rail arranged on the frame at a radial side of the cam assembly, a first sliding seat which can slide along the first slide rail, a swing arm arranged on the first sliding seat, and a pattern roller assembly arranged on one end of the swing arm, wherein the first slide rail is arranged axially, a sliding wheel group is arranged on the lower end of the first sliding seat, the sliding wheel group penetrates into the track groove and can slide along the track groove, an ultrasonic assembly is arranged on the axial side of the cam assembly on the frame, and when the rotating shaft rotates, the cam assembly is driven to rotate, thereby using the track groove to push the sliding wheel group, thereby realizing the sliding of the pattern roller assembly along the first slide rail.

2. The ultrasonic rolling welding device according to claim 1, characterized in that: A shaft sleeve is arranged on the rotating shaft, a first servo motor is arranged on the frame, the first servo motor is drivingly connected to one end of the shaft sleeve, a second slide rail is radially slidably arranged on the frame, a second sliding seat is arranged on the second slide rail, the ultrasonic component is arranged on the second sliding seat, a screw mechanism for driving the second sliding seat to slide is arranged on the frame, and the other end of the shaft sleeve is drivingly connected to the screw mechanism.

3. The ultrasonic rolling welding device according to claim 2, characterized in that: The shaft sleeve is connected with the screw mechanism through a bevel gear or a helical gear transmission.

4. The ultrasonic rolling welding device according to claim 1, characterized in that: The pattern roller assembly comprises a pattern roller body rotatably arranged on a swing arm, a rotating roller body rotatably arranged on the swing arm, and a synchronous belt covering the pattern roller body and the rotating roller body.

5. The ultrasonic rolling welding device according to claim 4, characterized in that: The swing arm is provided with a tensioning wheel for tensioning the synchronous belt, and the tensioning wheel can be adjusted up and down by means of bolt locking.

6. The ultrasonic rolling welding device according to claim 4, characterized in that: The first sliding seat or the swing arm is provided with a second servo motor for driving the rotating roller body.

7. The ultrasonic rolling welding device according to claim 1, characterized in that: The welding mechanisms are divided into two groups, which are respectively and symmetrically arranged along the radial direction of the cam assembly.

8. The ultrasonic rolling welding device according to claim 1, characterized in that: The swing arm can slide up and down along the first sliding seat and be locked by a locking bolt.

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