A two-stage speed-changing diaper ear patch device and working method

Abstract

The present invention relates to the technical field of diaper production equipment, and in particular to a two-stage speed-changing diaper ear patch equipment and working method. The equipment includes an ear patch cutting device, a rotary crank speed-changing device, a multi-servo speed-changing and pitch-changing device, and a diaper conveyor line; the rotary crank speed-changing device performs the first-stage speed-changing, and the multi-servo speed-changing and pitch-changing device performs the second-stage speed-changing. Compared with only one-stage speed-changing, the use of two-stage speed-changing can share the inertial impact force generated by the speed-changing, thereby increasing the maximum operating speed that the equipment can withstand, and also protecting the equipment and increasing the service life of the equipment; the rotary crank speed-changing device can perform the rotation acceleration of the ear patch, and the multi-servo speed-changing and pitch-changing device can perform the pitch change of the ear patch and the speed change matching according to the different sizes provided by the customer, so the set of equipment can effectively adapt to diapers of different models and sizes, and has a wide range of adaptability.

Description

Technical Field

[0001] The present invention relates to the technical field of diaper production equipment, and in particular to a two-stage speed-changing diaper ear patch equipment and a working method. Background Art

[0002] The ear stickers of diapers are used to fix the diapers after wearing. The ear stickers are trapezoidal in shape. In order to reduce waste, they are usually cut into a staggered and inverted arrangement on the strip material. The ear stickers are arranged in a left-right separation on the diapers, so a device is needed to separate the cut ear stickers outwards.

[0003] The Chinese patent with the authorization announcement number CN105155244B discloses a diaper ear patch cutting and alignment system and method. After cutting the ear patches, the ear patch adsorption device arranged on the left and right rotating wheels adsorbs the cut left and right ear patches, and then rotates the adsorption device outward through the rotating alignment device to rotate to the corresponding bonding position of the ear patches. The end face cam curve of the device can only achieve a sudden change in speed within a small angle, with large mechanical shock and obvious vibration, and can only be applied to low speed occasions; the replacement of the end face cam is very troublesome, requiring professional technicians to disassemble and assemble, and adjust the corresponding angle, because the sudden change angle is small, the position is difficult to find; the device cannot change the ear patch distance, and cannot adapt to the width of two ear patches corresponding to multiple code numbers; the speed is changed by replacing the plane cam, and the speed is a small angle (circular) sudden change, so the speed generated by the mechanism can only be close to the speed of the product, and the speed cannot be completely matched. Summary of the invention

[0004] In order to overcome the deficiencies in the prior art, the present invention provides a two-stage speed-changing diaper ear patch device and a working method.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A two-stage speed-changing diaper ear patch device, characterized in that it includes an ear patch cutting device, a rotary crank speed-changing device, a multi-servo speed-changing and pitch-changing device, and a diaper conveying line;

[0007] The ear patch cutting device cuts out densely arranged ear patches;

[0008] The rotary crank speed change device comprises:

[0009] A rotating disk, which can rotate around its own axis, is provided with a first linear guide rail extending along its radial direction;

[0010] A first motor is used to drive the rotating disk to rotate;

[0011] A first circular guide rail, wherein the axis of the first circular guide rail is parallel to the axis of the rotating disk and is arranged at intervals;

[0012] a first cylindrical cam, wherein the first cylindrical cam is coaxially arranged with the first circular guide rail, and a first track groove is provided on an outer peripheral surface of the first cylindrical cam;

[0013] A plurality of steering adsorption mechanisms, including a first support seat, two steering adsorption platforms, two driven wheels, and a driving wheel, wherein the two steering adsorption platforms are respectively connected to the two driven wheels, the driving wheel meshes with the two driven wheels, a first roller is provided at the bottom of the driving wheel, the first roller cooperates with the first track groove, the first support seat includes a first slider cooperates with the first circular guide rail, a second slider cooperates with the first linear guide rail, and the second slider is connected to the first support seat through a torsion arm;

[0014] The steering adsorption mechanism can be driven by the rotating disk to perform variable speed rotation along the first circular guide rail, and at the same time, the driving wheel is driven to rotate by the first track groove through the first roller, so as to drive the two steering adsorption platforms to rotate relatively inward to a front-to-back arrangement state close to the adjacent state, or relatively outward to an axisymmetric left-right arrangement state;

[0015] The multi-servo speed-variable pitch-variable device comprises:

[0016] Support shaft, fixed setting;

[0017] A second circular guide rail is coaxially arranged with the support shaft;

[0018] Two second cylindrical cams, the two second cylindrical cams are arranged on the support shaft at intervals, and the two cylindrical cams are respectively provided with second track grooves;

[0019] A plurality of variable distance adsorption mechanisms, including a second support seat and two variable distance adsorption platforms, the second support seat is provided with a second linear guide rail, the two variable distance adsorption platforms are slidably provided on the second linear guide rail, the two variable distance adsorption platforms are respectively provided with second rollers, the two second rollers are respectively matched with two second track grooves, and the second support seat includes a third slider matched with the second circular guide rail;

[0020] A plurality of servo motors, one servo motor is connected to a variable pitch adsorption mechanism through a shaft sleeve mechanism, and correspondingly drives the variable pitch adsorption mechanism to rotate along the second circular guide rail at a variable speed, and at the same time, the two variable pitch adsorption platforms are driven to move by the second track groove through the second roller, so that the two variable pitch adsorption platforms move toward each other or move away from each other;

[0021] The steering adsorption mechanism of the rotary crank speed changing device receives the ear patches cut by the ear patch cutting device when the two steering adsorption platforms are close to the adjacent front and rear arrangement state, and performs the first level of speed change while the two steering adsorption platforms are rotated to the axially symmetrical left and right arrangement state to transfer the ear patches to the multi-servo speed and pitch changing device; the two variable pitch adsorption platforms of the variable pitch adsorption mechanism of the multi-servo speed and pitch changing device receive the ear patches sent by the rotary crank speed changing device, and perform the second level of speed change while the two variable pitch adsorption platforms are moved to the fitting position to attach the ear patches to the diaper conveyor line.

[0022] Furthermore, the two driven wheels are respectively arranged on both sides of the driving wheel, and form a front-to-back arrangement state relative to the driving wheel. The upper surface of the steering adsorption platform has an arc adsorption surface. The two driven wheels are respectively arranged with the driving wheels at a staggered angle of the rotating shaft, so that the driving wheel is respectively meshed with the two driven wheels arranged obliquely. The two steering adsorption platforms can be rotated to the inner side and be in a front-to-back arrangement state close to the adjacent ones, and the arc adsorption surfaces of the two steering adsorption platforms are in the same arc surface.

[0023] Furthermore, the axes of the two driven wheels and the driving wheel can extend and intersect on the axis of the first circular guide rail, and the arc adsorption surfaces of the two steering adsorption platforms are located in the same arc surface, and the arc center of the arc surface is located on the axis of the first circular guide rail.

[0024] Furthermore, each steering adsorption mechanism is driven by a rotary crank speed change device to switch between a densely arranged state close to each other and a dispersed arranged state separated from each other; in the densely arranged state, the two steering adsorption platforms of the same steering adsorption mechanism are in a front-to-back arrangement state close to each other; in the dispersed arrangement state, the two steering adsorption platforms of the same group of steering adsorption mechanisms are in an axially symmetrical left-right arrangement state.

[0025] Furthermore, the first circular guide rail can rotate around its axis, and the first circular guide rail is connected to the rotating disk through a transmission so that the rotation of the rotating disk simultaneously drives the first circular guide rail to rotate. The rotation direction of the first circular guide rail is the same as the rotation direction of the rotating disk, that is, the steering direction of the first circular guide rail is the same as the rotation direction of the steering adsorption mechanism, so as to reduce the friction between the first slider and the first circular guide rail.

[0026] Furthermore, the multi-servo speed and pitch change device also includes a second motor, and the second circular guide rail can rotate around its axis. The second motor drives the second circular guide rail to rotate, and the rotation direction of the second circular guide rail is the same as the rotation direction of the variable pitch adsorption mechanism to reduce the friction between the third slider and the second circular guide rail.

[0027] Furthermore, the shaft sleeve mechanism is arranged outside the supporting shaft, and each shaft sleeve mechanism is stacked and nested, so that the rotation speeds of each shaft sleeve mechanism do not affect each other.

[0028] Furthermore, the steering adsorption mechanism also includes a first negative pressure tube, which is arranged on the first support seat and connected to the two steering adsorption platforms, and the first adsorption tube synchronously controls the adsorption working state of the two steering adsorption platforms.

[0029] Furthermore, the variable distance adsorption mechanism also includes a second negative pressure tube, which is arranged on the second support seat and connected to the two variable distance adsorption platforms. The second negative pressure tube is a flexible tube, and the second negative pressure tube synchronously controls the adsorption working state of the two variable distance adsorption platforms.

[0030] A two-stage speed-changing diaper ear patch working method, characterized in that it comprises the following steps:

[0031] Step 1: The ear sticker cutting device cuts out densely arranged ear stickers;

[0032] Step 2: The steering adsorption mechanism of the rotary crank transmission receives the ear stickers cut by the ear sticker cutting device when two steering adsorption platforms are arranged in a front-to-back relationship, and the speed of the steering adsorption mechanism matches the speed of the ear sticker cutting device at this position;

[0033] Step 3: The rotary crank speed change device causes the steering adsorption mechanism with the ear sticker to perform the first-stage speed change rotation, and at the same time, the two steering adsorption platforms rotate to an axisymmetric left-right arrangement state, and the two variable pitch adsorption platforms of the variable pitch adsorption mechanism of the multi-servo variable speed and variable pitch device receive the ear stickers of the steering adsorption mechanism, and the speed of the steering adsorption mechanism at this position matches the speed of the variable pitch adsorption mechanism;

[0034] Step 4: The multi-servo variable speed and variable pitch device causes the variable pitch adsorption mechanism with the ear stickers to perform the second-stage variable speed rotation. At the same time, the two variable pitch adsorption platforms move toward or away from each other to the matching position, and the ear stickers are attached to the diaper conveyor line. The speed of the variable pitch adsorption mechanism at this position matches the speed of the diaper conveyor line.

[0035] From the above description of the present invention, it can be seen that compared with the prior art, the present invention provides a two-stage speed-changing diaper ear patch device and working method. The rotary crank speed change device of the device performs the first stage speed change, and the multi-servo speed and pitch change device performs the second stage speed change. Compared with only one stage speed change, the two-stage speed change can share the inertial impact force generated by the speed change, thereby increasing the maximum operating speed that the equipment can withstand, protecting the equipment, and increasing the service life of the equipment. At the same time, the ear patch speed can be fully matched; the rotary crank speed change device can rotate the ear patch, and the multi-servo speed and pitch change device can change the pitch of the ear patch. Therefore, this set of equipment can effectively adapt to diapers of different models and sizes, and has a wide range of adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The structure of the diaper ear sticker device with two-stage speed change is shown in FIG. Figure 1 .

[0037] Figure 2 The structure of the diaper ear sticker device with two-stage speed change is shown in FIG. Figure 2 .

[0038] Figure 3 It is a schematic diagram of the structure of the rotary crank speed change device of the present invention.

[0039] Figure 4 The structure of the steering adsorption mechanism of the present invention is shown in FIG. Figure 1 .

[0040] Figure 5 The structure of the steering adsorption mechanism of the present invention is shown in FIG. Figure 2 .

[0041] Figure 6 The structure of the multi-servo variable speed and variable pitch device of the present invention is shown in FIG. Figure 1 .

[0042] Figure 7 The structure of the multi-servo variable speed and variable pitch device of the present invention is shown in FIG. Figure 2 .

[0043] The symbols in the figure correspond to the following: 1. ear sticker cutting device, 2. rotary crank speed change device, 21. rotating disk, 211. first linear guide rail, 22. first motor, 23. first circular guide rail, 24. first cylindrical cam, 241. first track groove, 25. steering adsorption mechanism, 251. first support seat, 252. steering adsorption platform, 2521. arc adsorption surface, 253. driven wheel, 254. driving wheel, 255. first roller, 256. first slider, 257. second slider, 258. Torsion arm, 259. First negative pressure tube, 3. Multi-servo speed and pitch changing device, 31. Support shaft, 32. Second circular guide rail, 33. Second cylindrical cam, 331. Second track groove, 34. Variable pitch adsorption mechanism, 341. Second support seat, 342. Variable pitch adsorption platform, 343. Second linear guide rail, 344. Second roller, 345. Third slider, 346. Second negative pressure tube, 35. Servo motor, 351. Bushing mechanism, 36. Second motor, 4. Diaper conveyor line. DETAILED DESCRIPTION

[0044] The present invention is further described below through specific implementation modes.

[0045] Reference Figures 1 to 7 As shown, a two-stage speed-changing diaper ear patch device comprises an ear patch cutting device 1, a rotary crank speed-changing device 2, a multi-servo speed-changing and pitch-changing device 3, and a diaper conveying line 4;

[0046] The ear patch cutting device 1 cuts out densely arranged ear patches;

[0047] The rotary crank speed change device 2 comprises:

[0048] The rotating disk 21 can rotate around its own axis, and the rotating disk 21 is provided with a first linear guide rail 211 extending along its radial direction;

[0049] A first motor 22, used for driving the rotating disk 21 to rotate;

[0050] A first circular guide rail 23, wherein the axis of the first circular guide rail 23 is parallel to the axis of the rotating disk 21 and is arranged at intervals;

[0051] A first cylindrical cam 24, wherein the first cylindrical cam 24 is coaxially arranged with the first circular guide rail 23, and a first track groove 241 is provided on an outer peripheral surface of the first cylindrical cam 24;

[0052] A plurality of steering adsorption mechanisms 25, including a first support seat 251, two steering adsorption platforms 252, two driven wheels 253, and a driving wheel 254, wherein the two steering adsorption platforms are respectively connected to the two driven wheels, the driving wheel meshes with the two driven wheels, a first roller 255 is provided at the bottom of the driving wheel 254, the first roller 255 cooperates with the first track groove 241, the first support seat 251 includes a first slider 256 cooperates with the first circular guide rail 23, and a second slider 257 cooperates with the first linear guide rail 211, and the second slider 257 is connected to the first support seat 251 through a torsion arm 258;

[0053] The steering adsorption mechanism 25 can be driven by the rotating disk 21 to perform variable speed rotation along the first circular guide rail 23, and at the same time, the driving wheel 254 is driven to rotate by the first track groove 241 through the first roller 255, so as to drive the two steering adsorption platforms 252 to rotate relatively inward to a front-to-back arrangement state close to the adjacent state, or relatively outward to a left-right arrangement state with axis symmetry;

[0054] The two driven wheels 253 are respectively arranged on both sides of the driving wheel 254, and are arranged in a front-to-back arrangement relative to the driving wheel 254. The upper surface of the steering adsorption platform 252 has an arc adsorption surface 2521. The two driven wheels 253 are arranged with the driving wheel 254 in a staggered rotation axis angle, so that the driving wheel 254 and the two driven wheels 253 are arranged in an inclined meshing transmission. The two steering adsorption platforms 252 can be rotated to the inner side and be in a front-to-back arrangement close to the adjacent ones. The arc adsorption surfaces 2521 of the two steering adsorption platforms 252 are in the same arc surface. The axes of the two driven wheels 253 and the driving wheel 254 can extend and intersect on the axis of the first circular guide rail 23. The arc adsorption surfaces 2521 of the two steering adsorption platforms 252 are in the same arc surface, and the arc center of the arc surface is on the axis of the first circular guide rail 23. This structure makes the outer trajectory of the adsorption work of the rotary crank speed change device 2 circular, which is more suitable for the ear sticker cutting device 1.

[0055] Each steering adsorption mechanism 25 is driven by the rotary crank speed change device 2 to switch between a dense arrangement state close to each other and a dispersed arrangement state separated from each other; in the dense arrangement state, the two steering adsorption platforms 252 of the same steering adsorption mechanism 25 are in a front-to-back arrangement state close to each other; in the dispersed arrangement state, the two steering adsorption platforms 252 of the same group of steering adsorption mechanisms 25 are in an axially symmetrical left-right arrangement state.

[0056] The first circular guide rail 23 can rotate around its axis, and the first circular guide rail 23 is connected to the rotating disk 21 by transmission, so that the rotation of the rotating disk 21 drives the first circular guide rail 23 to rotate at the same time. The rotation direction of the first circular guide rail 23 is the same as the rotation direction of the rotating disk 21, that is, the steering direction of the first circular guide rail 23 is the same as the rotation direction of the steering adsorption mechanism 25, so as to reduce the friction between the first slider 256 and the first circular guide rail 23.

[0057] The steering adsorption mechanism 25 further includes a first negative pressure pipe 259 , which is disposed on the first support seat 251 and connected to the two steering adsorption platforms 252 . The first adsorption pipe 259 synchronously controls the adsorption working states of the two steering adsorption platforms 252 .

[0058] The multi-servo speed-variable pitch-variable device 3 comprises:

[0059] Support shaft 31, fixedly arranged;

[0060] A second circular guide rail 32, arranged coaxially with the support shaft 31;

[0061] Two second cylindrical cams 33, the two second cylindrical cams 33 are arranged on the support shaft 31 at intervals, and the two cylindrical cams 33 are respectively provided with second track grooves 331;

[0062] A plurality of variable distance adsorption mechanisms 34, including a second support seat 341 and two variable distance adsorption platforms 342, wherein the second support seat 341 is provided with a second linear guide rail 343, and the two variable distance adsorption platforms 342 are slidably provided on the second linear guide rail 343, and the two variable distance adsorption platforms 342 are respectively provided with second rollers 344, and the two second rollers 344 are respectively matched with the two second track grooves 331, and the second support seat 341 includes a third slider 345 matched with the second circular guide rail 32;

[0063] A plurality of servo motors 35, wherein one servo motor 35 is connected to a variable distance adsorption mechanism 34 through a shaft sleeve mechanism 351, and correspondingly drives the variable distance adsorption mechanism 34 to rotate along the second circular guide rail 32 at a variable speed, and at the same time, two variable distance adsorption platforms 342 are driven to move by the second track groove 331 through the second roller 344, so that the two variable distance adsorption platforms 342 move toward each other, or move away from each other;

[0064] The multi-servo variable speed and variable pitch device 3 also includes a second motor 36. The second circular guide rail 32 can rotate around its axis. The second motor 36 drives the second circular guide rail 32 to rotate. The rotation direction of the second circular guide rail 32 is the same as the rotation direction of the variable pitch adsorption mechanism 34 to reduce the friction between the third slider 345 and the second circular guide rail 32.

[0065] The sleeve mechanism 351 is disposed outside the support shaft 31 , and each sleeve mechanism 351 is stacked and nested so that the rotation speeds of each sleeve mechanism 351 do not affect each other.

[0066] The variable distance adsorption mechanism 34 also includes a second negative pressure pipe 346, which is arranged on the second support seat 341 and connected to the two variable distance adsorption platforms 342. The second negative pressure pipe 346 is a flexible pipe, and the second negative pressure pipe 346 synchronously controls the adsorption working state of the two variable distance adsorption platforms 342.

[0067] The steering adsorption mechanism 25 of the rotary crank speed change device 2 receives the ear patches cut by the ear patch cutting device 1 when the two steering adsorption platforms 252 are arranged close to the adjacent front and rear positions, and performs a first-stage speed change while the two steering adsorption platforms 252 are rotated to an axially symmetrical left and right arrangement position to transfer the ear patches to the multi-servo speed and pitch change device 3; the two variable pitch adsorption platforms 342 of the variable pitch adsorption mechanism 34 of the multi-servo speed and pitch change device 3 receive the ear patches sent by the rotary crank speed change device 2, and performs a second-stage speed change while the two variable pitch adsorption platforms 342 are moved to the fitting position to attach the ear patches to the diaper conveyor line 4.

[0068] A two-stage speed-changing diaper ear patch working method comprises the following steps:

[0069] Step 1: the ear patch cutting device 1 cuts out densely arranged ear patches;

[0070] Step 2: The steering adsorption mechanism 25 of the rotary crank transmission device 2 receives the ear stickers cut by the ear sticker cutting device 1 in a front-to-back arrangement state where two steering adsorption platforms 252 are close to each other, and the speed of the steering adsorption mechanism 25 at this position matches the speed of the ear sticker cutting device 1;

[0071] Step 3: The rotary crank speed change device 2 causes the steering adsorption mechanism 25 with the ear stickers to perform the first-stage speed change rotation, and at the same time, the two steering adsorption platforms 252 rotate to an axisymmetric left-right arrangement state, and the two variable pitch adsorption platforms 342 of the variable pitch adsorption mechanism 34 of the multi-servo variable speed and variable pitch device 3 receive the ear stickers of the steering adsorption mechanism 25, and the speed of the steering adsorption mechanism 25 at this position matches the speed of the variable pitch adsorption mechanism 34;

[0072] Step 4: The multi-servo variable speed and variable pitch device 3 causes the variable pitch adsorption mechanism 34 with the ear stickers to perform a second-stage variable speed rotation. At the same time, the two variable pitch adsorption platforms 342 move toward or away from each other to an adaptation position, and attach the ear stickers to the diaper conveyor line 4. The speed of the variable pitch adsorption mechanism 34 at this position matches the speed of the diaper conveyor line 4.

[0073] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A two-stage speed-changing diaper ear sticking device, characterized in that: It includes ear patch cutting device, rotary crank speed change device, multi-servo speed and pitch change device, and diaper conveyor line; The ear patch cutting device cuts out densely arranged ear patches; The rotary crank speed change device comprises: A rotating disk, which can rotate around its own axis, is provided with a first linear guide rail extending along its radial direction; A first motor is used to drive the rotating disk to rotate; A first circular guide rail, wherein the axis of the first circular guide rail is parallel to the axis of the rotating disk and is arranged at intervals; a first cylindrical cam, wherein the first cylindrical cam is coaxially arranged with the first circular guide rail, and a first track groove is provided on an outer peripheral surface of the first cylindrical cam; A plurality of steering adsorption mechanisms, including a first support seat, two steering adsorption platforms, two driven wheels, and a driving wheel, wherein the two steering adsorption platforms are respectively connected to the two driven wheels, the driving wheel meshes with the two driven wheels, a first roller is provided at the bottom of the driving wheel, the first roller cooperates with the first track groove, the first support seat includes a first slider cooperates with the first circular guide rail, a second slider cooperates with the first linear guide rail, and the second slider is connected to the first support seat through a torsion arm; The steering adsorption mechanism can be driven by the rotating disk to perform variable speed rotation along the first circular guide rail, and at the same time, the driving wheel is driven to rotate by the first track groove through the first roller, so as to drive the two steering adsorption platforms to rotate relatively inward to a front-to-back arrangement state close to the adjacent state, or relatively outward to an axisymmetric left-right arrangement state; The multi-servo speed-variable pitch-variable device comprises: Support shaft, fixed setting; A second circular guide rail is coaxially arranged with the support shaft; Two second cylindrical cams, the two second cylindrical cams are arranged on the support shaft at intervals, and the two cylindrical cams are respectively provided with second track grooves; A plurality of variable distance adsorption mechanisms, including a second support seat and two variable distance adsorption platforms, the second support seat is provided with a second linear guide rail, the two variable distance adsorption platforms are slidably provided on the second linear guide rail, the two variable distance adsorption platforms are respectively provided with second rollers, the two second rollers are respectively matched with two second track grooves, and the second support seat includes a third slider matched with the second circular guide rail; A plurality of servo motors, one servo motor is connected to a variable pitch adsorption mechanism through a shaft sleeve mechanism, and correspondingly drives the variable pitch adsorption mechanism to rotate along the second circular guide rail at a variable speed, and at the same time, the two variable pitch adsorption platforms are driven to move by the second track groove through the second roller, so that the two variable pitch adsorption platforms move toward each other or move away from each other; The steering adsorption mechanism of the rotary crank speed changing device receives the ear patches cut by the ear patch cutting device when the two steering adsorption platforms are close to the adjacent front and rear arrangement state, and performs the first level of speed change while the two steering adsorption platforms are rotated to the axially symmetrical left and right arrangement state to transfer the ear patches to the multi-servo speed and pitch changing device; the two variable pitch adsorption platforms of the variable pitch adsorption mechanism of the multi-servo speed and pitch changing device receive the ear patches sent by the rotary crank speed changing device, and perform the second level of speed change while the two variable pitch adsorption platforms are moved to the fitting position to attach the ear patches to the diaper conveyor line.

2. According to the two-stage speed change diaper ear sticking device of claim 1, it is characterized by: The two driven wheels are respectively arranged on both sides of the driving wheel, and are arranged in a front-to-back state relative to the driving wheel. The upper surface of the steering adsorption platform has an arc adsorption surface. The two driven wheels are respectively arranged with the driving wheels at a rotating shaft angle staggered, so that the driving wheel is respectively meshed with the two driven wheels arranged in an inclined manner. The two steering adsorption platforms can be rotated to the inner side and be in a front-to-back arrangement close to the adjacent ones, and the arc adsorption surfaces of the two steering adsorption platforms are in the same arc surface.

3. According to claim 2, a two-stage speed change diaper ear sticking device is characterized in that: The axes of the two driven wheels and the driving wheel can extend and intersect on the axis of the first circular guide rail, and the arc adsorption surfaces of the two steering adsorption platforms are located in the same arc surface, and the arc center of the arc surface is located on the axis of the first circular guide rail.

4. According to the two-stage speed change diaper ear sticking device of claim 1, it is characterized by: Each steering adsorption mechanism is driven by a rotary crank speed change device to switch between a dense arrangement state close to each other and a dispersed arrangement state separated from each other; in the dense arrangement state, the two steering adsorption platforms of the same steering adsorption mechanism are in a front-to-back arrangement state close to each other; in the dispersed arrangement state, the two steering adsorption platforms of the same group of steering adsorption mechanisms are in an axisymmetric left-right arrangement state.

5. According to the two-stage speed change diaper ear stick device of claim 1, it is characterized by: The first circular guide rail can rotate around its axis, and the first circular guide rail is connected to the rotating disk through a transmission connection, so that the rotating disk rotates and drives the first circular guide rail to rotate at the same time. The rotation direction of the first circular guide rail is the same as the rotation direction of the rotating disk, that is, the steering direction of the first circular guide rail is the same as the rotation direction of the steering adsorption mechanism, so as to reduce the friction between the first slider and the first circular guide rail.

6. The two-stage speed-changing diaper ear sticking device according to claim 1, characterized in that: The multi-servo variable speed and variable pitch device also includes a second motor. The second circular guide rail can rotate around its axis. The second motor drives the second circular guide rail to rotate. The rotation direction of the second circular guide rail is the same as the rotation direction of the variable pitch adsorption mechanism to reduce the friction between the third slider and the second circular guide rail.

7. The two-stage speed-changing diaper ear sticking device according to claim 1, characterized in that: The shaft sleeve mechanism is arranged outside the supporting shaft, and each shaft sleeve mechanism is stacked and nested so that the rotation speeds of each shaft sleeve mechanism do not affect each other.

8. The two-stage speed-changing diaper ear sticking device according to claim 1, characterized in that: The steering adsorption mechanism also includes a first negative pressure tube, which is arranged on the first support seat and connected to the two steering adsorption platforms. The first adsorption tube synchronously controls the adsorption working state of the two steering adsorption platforms.

9. The two-stage speed-changing diaper ear sticking device according to claim 1, characterized in that: The variable distance adsorption mechanism also includes a second negative pressure pipe, which is arranged on the second support seat and connected to the two variable distance adsorption platforms. The second negative pressure pipe is a flexible pipe, and the second negative pressure pipe synchronously controls the adsorption working state of the two variable distance adsorption platforms.

10. A two-stage speed-changing diaper ear patch working method, characterized in that: A two-stage speed-changing diaper ear patch device according to any one of claims 1 to 9 comprises the following steps: Step 1: The ear sticker cutting device cuts out densely arranged ear stickers; Step 2: The steering adsorption mechanism of the rotary crank transmission receives the ear stickers cut by the ear sticker cutting device when two steering adsorption platforms are arranged in a front-to-back relationship, and the speed of the steering adsorption mechanism matches the speed of the ear sticker cutting device at this position; Step 3: The rotary crank speed change device causes the steering adsorption mechanism with the ear sticker to perform the first-stage speed change rotation, and at the same time, the two steering adsorption platforms rotate to an axisymmetric left-right arrangement state, and the two variable pitch adsorption platforms of the variable pitch adsorption mechanism of the multi-servo variable speed and variable pitch device receive the ear stickers of the steering adsorption mechanism, and the speed of the steering adsorption mechanism at this position matches the speed of the variable pitch adsorption mechanism; Step 4: The multi-servo variable speed and variable pitch device causes the variable pitch adsorption mechanism with the ear stickers to perform the second-stage variable speed rotation. At the same time, the two variable pitch adsorption platforms move toward or away from each other to the matching position, and the ear stickers are attached to the diaper conveyor line. The speed of the variable pitch adsorption mechanism at this position matches the speed of the diaper conveyor line.

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