Disposable one-piece slipper forming apparatus

Abstract

The application discloses a one-time single-piece slipper forming equipment, which comprises a rack, a continuous shoe upper forming device and a sole feeding device arranged on the rack; a deviation rectifying device, a spacing adjusting and gluing device and a composite device are sequentially arranged on the rack along the conveying direction of the single-piece sole; the deviation rectifying device comprises left and right deviation rectifying members which are relatively movable and contact the side edges of the single-piece sole to rectify the left and right directions of the single-piece sole; the spacing adjusting and gluing device comprises an adsorbing variable-speed conveying component for conveying the sole at equal intervals and a gluing mechanism for gluing the top surface of the single-piece sole, and the gluing mechanism is arranged above the adsorbing variable-speed conveying component; the composite device comprises a pressing roller set which is connected with the discharging end of the adsorbing variable-speed conveying component and is used for pressing the glued sole and the shoe upper.

Description

Technical Field

[0001] This invention relates to the field of automated production of disposable slippers, and more particularly to equipment for molding disposable single-piece slippers. Background Technology

[0002] In the field of automated production of disposable slippers, common molding equipment typically includes an upper unwinding and forming device and a sole unwinding device. The production process is as follows: After the upper roll is cut, it is ultrasonically welded onto the upper roll two. Subsequently, the laminated upper roll passes through a gluing roller during the conveying process and then intersects with the conveying path of the sole roll, where they are laminated under pressure. Finally, the laminated roll is cut into slipper shapes by a roller cutter, and the finished product is sent out.

[0003] However, this roll-to-roll lamination process has a significant drawback: it generates a large amount of waste material after roll cutting. This waste material, due to the adhesive residue from the lamination process and the mixture of upper and sole materials, is difficult to separate and recycle. This not only wastes resources but also significantly increases manufacturing costs.

[0004] To overcome the aforementioned waste recycling challenges, an improved solution has been proposed in existing technology: this solution first pre-cuts the continuously rolled shoe sole material into individual pieces, then applies adhesive to the top surface of the sole pieces conveyed in a single row, and finally laminates them with the upper. However, this single-piece production process presents new technical problems: the individual sole pieces are prone to speed fluctuations and cumulative positional errors during conveying, resulting in inaccurate alignment when laminated with the continuously conveyed upper, causing misalignment between the upper and sole: for example, lateral displacement and positional lag of the sole, directly leading to product defects and a reduced production yield. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a more environmentally friendly, more accurate, and yield-enhancing disposable slipper production equipment.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a disposable single-piece slipper forming equipment, comprising a frame, wherein the frame is equipped with a continuous roll upper forming device for forming non-woven fabric uppers and a sole feeding device for conveying single-piece foamed soles; the frame is sequentially arranged along the conveying direction of the single-piece soles with a correction device, a spacing adjustment gluing device, and a composite device where the sole and the continuous roll upper conveying paths intersect; the correction device includes a left correction component and a right correction component that can move relative to each other, wherein the left correction component and the right correction component... The correction components contact the sides of the single-piece sole to correct its left and right deviations; the spacing adjustment gluing device includes an adsorption-type variable speed conveyor and a gluing mechanism. The adsorption-type variable speed conveyor is used to adsorb the single-piece sole and deliver it at equal intervals. The gluing mechanism is located above the adsorption-type variable speed conveyor and is used to apply glue to the top surface of the single-piece sole; the composite device includes a pressing roller group, which is connected to the discharge end of the adsorption-type variable speed conveyor and is used to press the glued sole and the upper together.

[0007] The left and right correction components of the correction device of this invention correct the left and right directions of the sole respectively. The adsorption-type variable speed conveying component adsorbs the sole to prevent the sole from tilting to the left or right during the conveying process. Then, the adsorption-type variable speed conveying component adjusts the conveying speed to deliver the sole at equal intervals, ensuring that the sole and the upper are accurately aligned. Subsequently, the composite device receives the corrected sole and the front and back spacing adjusted sole and composites it with the upper roll material to ensure the yield rate. In addition, the composite device can also fold the upper surface to ensure product consistency and make it more aesthetically pleasing.

[0008] Preferably, the discharge end of the composite device is connected to a dual-traction cutting device, which includes a cutting roller group, a first traction roller group, and a second traction roller group. The cutting roller group is used to cut the composite semi-finished product into molded slippers and send them out. The cutting roller group is located between the first traction roller group and the second traction roller group. The first traction roller group and the second traction roller group work together to straighten the section to be cut, ensuring the yield rate.

[0009] Based on the first and second traction roller groups, the dual-traction cutting device further includes a toe position sensor; the toe position sensor is used to detect the toe position of the composite sole; the first traction roller group is driven by a first traction drive mechanism that drives it to rotate at a constant speed; the second traction roller group is driven by a second traction drive mechanism that drives it to rotate, and the second traction drive mechanism is signal-connected to the toe position sensor; the second traction drive mechanism independently adjusts the linear speed of the second traction roller group according to the toe position signal detected by the toe position sensor. The first traction roller group rotates at a constant speed to ensure stable tension of the upper roll material in the composite section, the toe position sensor detects the sole position, and the speed change of the second traction roller group alters the tension of the upper roll material to align the toe position of the sole with the cutter head of the cutting roller group, further improving the yield rate.

[0010] Preferably, a shoe sole position sensor is provided on one side of the adsorption-type variable speed conveying component. The shoe sole position sensor is used to detect the position of the shoe sole on the adsorption-type variable speed conveying component. The shoe sole position sensor and the power source of the adsorption-type variable speed conveying component are respectively connected to the controller signal.

[0011] Preferably, the adsorption-type variable speed conveying component includes a suction conveyor belt, which is connected to a variable speed drive mechanism that drives it to change its conveying speed. The suction conveyor belt adsorbs single-piece shoe soles and conveys them out at equal intervals. The suction conveyor belt has a simple structure, fixing the position of the shoe sole through adsorption force, and then carrying the shoe sole in variable speed motion to ensure that the front and rear spacing between shoe soles is consistent.

[0012] Preferably, the gluing mechanism includes a gluing roller, the linear speed of which is greater than the conveying speed of the adsorption-type variable speed conveying component. The faster linear speed of the gluing roller increases the amount of glue applied to the sole. Furthermore, disposable slippers typically have soles made of materials such as pearl cotton or foam, which often have folds. Therefore, a faster gluing roller can accumulate glue on the top surface of the sole, allowing the glue to penetrate into the folds and ensuring a higher yield.

[0013] Preferably, the frame is also equipped with a sole conveyor belt for conveying single-piece soles. The correction device is located on both sides of the sole conveyor belt, and a sole hopper is connected to the inlet end of the sole conveyor belt. The single-piece sole hopper can reduce the downtime rate of disposable slippers because, compared with rolled soles, single-piece soles do not require complex processes such as receiving materials and changing rolls. Single-piece soles can improve work efficiency compared with rolled soles.

[0014] Preferably, the adsorption-type variable speed conveyor and the correction device are mounted on a moving platform, which can move back and forth relative to the frame. This aligns the shoe sole with the cutters of the subsequent cutting roller group, ensuring cutting quality and yield.

[0015] Preferably, the left correction component has a first arc surface that conforms to the shape of the left side of the one-piece sole; the right correction component has a second arc surface that conforms to the shape of the right side of the one-piece sole. This increases the contact area and ensures the correction effect.

[0016] Preferably, the left correction component is eccentrically connected to the left synchronous pulley, and the right correction component is eccentrically connected to the right synchronous pulley. The left and right synchronous pulleys are connected to the correction drive mechanism that drives their relative motion via a synchronous belt. The eccentric drive structure is simple and has a long service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the correction device and the spacing adjustment gluing device of the present invention.

[0019] Figure 3 This is a schematic diagram of the correction device of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of the spacing adjustment adhesive device of the present invention.

[0021] Figure 5 This is a schematic diagram of the cutting roller assembly of the present invention.

[0022] The names of the body parts referred to by the numbers in the above attached diagrams are as follows:

[0023] The components include: 1. Frame; 2. Correction device; 21. Left correction component; 211. First arc surface; 22. Right correction component; 221. Second arc surface; 23. Left synchronous pulley; 24. Right synchronous pulley; 25. Correction drive motor; 3. Spacing adjustment gluing device; 31. Suction conveyor belt; 32. Gluing roller; 33. Shoe sole position sensor; 4. Pressing roller group; 5. Double traction cutting device; 51. First traction roller group; 52. Cutting roller group; 53. Second traction roller group; 54. Shoe toe position sensor; 6. Shoe sole conveyor belt; 7. Shoe sole hopper; 8. Moving platform; 9. Linear guide rail structure. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0025] A disposable single-piece slipper forming equipment includes a frame, on which are mounted a continuous roll upper forming device for forming non-woven fabric uppers and a sole feeding device for conveying single-piece foamed soles. The continuous roll upper forming device cuts a continuous roll of non-woven fabric into individual uppers, and then welds the uppers one by one onto a connected non-woven fabric layer using ultrasonic welding to form a continuous roll of semi-finished upper. The sole feeding device removes the single-piece foamed sole from the hopper and transfers it to a correction device 2. The parts related to the continuous roll upper forming device (such as non-woven fabric unwinding and ultrasonic welding) and the sole feeding device are existing technologies. The improvement of this invention focuses on the correction, positioning, conveying, and composite of the sole.

[0026] In this invention, the frame 1 is sequentially equipped with a correction device 2, a spacing adjustment and gluing device 3, and a composite device where the shoe sole and the continuous roll shoe upper conveying paths intersect. The correction device 2 includes a left correction component 21 and a right correction component 22 that can move relative to each other. The left correction component 21 and the right correction component 22 respectively contact the side of the single-piece shoe sole to correct its left and right directions. There are several ways in which the left correction component 21 and the right correction component 22 move relative to each other. For example, the right correction component 22 remains stationary, the right side of the shoe sole abuts against the right correction component 22, and the left correction component 21 moves toward the right correction component 22 to achieve left and right direction correction; or the left correction component 21 remains stationary, the left side of the shoe sole abuts against the left correction component 21, and the right correction component 22 moves toward the left correction component 21 to achieve left and right direction correction of the shoe sole; or the left correction component 21 and the right correction component 22 move relative to each other at the same time to achieve left and right direction correction of the shoe sole.

[0027] There are several ways in which the left and right correction components 21 and 22 can move relative to each other simultaneously. For example, the left and right correction components 21 and 22 can be connected to a linear drive mechanism respectively, or the left correction component 21 can be eccentrically connected to the left synchronous pulley 23, and the right correction component 22 can be eccentrically connected to the right synchronous pulley 24. The left and right synchronous pulleys 23 and 24 can be connected to the correction drive mechanism that drives their relative movement via a synchronous belt. The left correction component 21 has a first transverse guide groove, and the right correction component 22 has a second transverse guide groove. The guide groove has a first guide post fixed on the left synchronous wheel 23 and a second guide post fixed on the right synchronous wheel 24. The rotation of the left synchronous wheel 23 drives the first guide post to move along the first transverse guide groove, causing the left correction component 21 to move back and forth. The rotation of the right synchronous wheel 24 drives the second guide post to move along the second transverse guide groove, causing the right correction component 22 to move back and forth. The right correction component 22 and the left correction component 21 move closer to or further away from each other to achieve left-right correction of the sole, ensuring the sole enters the spacing adjustment and gluing device 3 with a straight alignment. The left correction component 21 has a first arc surface 211 that conforms to the shape of the left side of the single-piece sole; the right correction component 22 has a second arc surface 221 that conforms to the shape of the right side of the single-piece sole. The first arc surface 211 and the second arc surface 221 synchronously correct the two sets of sole components, ensuring the quality of the correction.

[0028] The spacing adjustment gluing device 3 includes an adsorption-type variable speed conveying component and a gluing mechanism. The adsorption-type variable speed conveying component is used to adsorb single shoe soles and deliver them at equal intervals. The adsorption-type variable speed conveying component fixes the position of the shoe sole through adsorption force, ensuring that the shoe sole maintains its upright posture during gluing and conveying. Alternatively, the adsorption-type variable speed conveying component can be a reciprocating suction cup robot, or the adsorption-type variable speed conveying component includes a suction conveyor belt 31 with adsorption holes, wherein the adsorption holes are connected to a negative pressure source, and the suction conveyor belt 31 is driven to change its position. The variable-speed drive mechanism of the conveying system is connected to the suction conveyor belt 31, which adsorbs the single-piece shoe soles and delivers them at equal intervals. A shoe sole position sensor 33 is provided on one side of the suction-type variable-speed conveying component. The shoe sole position sensor 33 is used to detect the position of the shoe sole on the suction-type variable-speed conveying component. The shoe sole position sensor 33 and the power source of the suction-type variable-speed conveying component are respectively connected to the controller signal. The shoe sole position sensor 33 can calibrate the front and rear positions of the shoe sole according to the synchronous position or the set blade position, thereby achieving equal-interval conveying of the shoe sole. The suction conveyor belt 31 is preferred for continuous conveying and relatively high working efficiency. The gluing mechanism is located above the suction-type variable-speed conveying component and is used to apply glue to the top surface of the single-piece shoe sole. The gluing mechanism includes a gluing roller 32, the linear speed of which is greater than the conveying speed of the suction-type variable-speed conveying component. The rotation speed of the gluing roller 32 is twice the conveying speed of the adsorption-type variable speed conveyor component, which can increase the amount of glue applied to the top surface of the shoe sole, so that the folds of the pearl cotton or foam shoe sole are covered with glue, ensuring that the shoe sole is stably adhered to the shoe surface and improving the yield.

[0029] The composite device includes a pressing roller assembly 4, which is connected to the discharge end of an adsorption-type variable speed conveyor. The pressing roller assembly 4 is used to press the glued sole and upper together. The upper is conveyed through the pressing roller assembly 4. When the adsorption-type variable speed conveyor delivers the glued sole into the composite device, the pressing roller assembly 4 presses the sole, which has been corrected for left and right alignment and front and back spacing, together with the bottom of the semi-finished upper. The sole is then glued to the upper to form a semi-finished slipper. Additionally, during the pressing process, the upper portion of the upper can be folded to ensure product consistency.

[0030] During operation, the single-piece soles pass through the correction device 2 one by one. When the single-piece sole enters between the left correction component 21 and the right correction component 22, the left and right correction components 22 move relative to each other and simultaneously contact the left and right sides of the sole to correct its deviation. After correction, the sole enters the adsorption-type variable speed conveyor component. The adsorption-type variable speed conveyor component fixes the position of the sole through adsorption force to prevent the sole from shifting during the transfer process. During the process of conveying the sole, the adsorption-type variable speed conveyor component passes through the gluing roller 32 to apply glue to the sole. In addition, the controller controls the output speed of its power source based on the deviation between the actual distance (measured by the sole position signal) and the set distance, so that the sole is conveyed at equal intervals after entering the composite device. The soles entering the composite device at equal intervals are equivalent to being adhered to the upper roll material at equal intervals, ensuring that the sole position is accurate and the posture is upright, thus improving the yield. The composite device then sends the composite semi-finished product into the cutting process for cutting and shaping.

[0031] Based on the above embodiments, the following optimizations or further explanations can be made.

[0032] The discharge end of the composite device is connected to a dual-traction cutting device 5, which includes a cutting roller group 52. The cutting roller group 52 is used to cut the composite semi-finished product into molded slippers for delivery. The cutting roller group 52 includes an upper cutting roller and a lower supporting cutting roller. The semi-finished product, carrying the sole, enters between the upper cutting roller and the lower supporting cutting roller, where the upper cutting roller cuts it into slippers for delivery. A conveyor belt can be connected after the cutting roller group 52 to collect the slippers one by one. Alternatively, the discharge end of the cutting roller group 52 can be connected to packaging equipment to achieve integrated slipper packaging and forming. The dual-traction cutting device 5 also includes a first traction roller group 51 and a second traction roller group 53, with the cutting roller group 52 positioned between them. The first traction roller group 51 and the second traction roller group 53 apply traction force to both ends of the section to be cut, ensuring the tension of the composite semi-finished product and improving the cutting quality.

[0033] In addition, to further improve the yield rate, the dual-traction cutting device 5 also includes a toe position sensor 54. The toe position sensor 54 is used to detect the toe position of the sole after lamination. The toe position sensor 54 can be set on the feeding side of the first traction roller group 51. The toe position of the sole is detected before the sole enters the first traction roller group 51. An encoder is provided on the drive shaft of the cutting roller group 52. The position of the cutter head of the cutting roller group 52 is determined according to the angle signal of the cutting roller group 52. The first traction roller group 51 is connected to the first traction drive mechanism that drives it to rotate at a constant speed. The constant speed rotation of the first traction roller group can ensure that the tension of the upper roll material at the lamination position and before the lamination position remains stable. The second traction roller group 53 is connected to the second traction drive mechanism that drives its rotation. The second traction drive mechanism independently adjusts the linear speed of the second traction roller group 53 based on the toe position signal detected by the toe position sensor 54. Because the sole has been calibrated for its front and back positions before lamination, the deviation between the sole at the cutting position and the expected position is usually small. The front and back positions of the sole can be recalibrated by changing the tension of the upper roll at the cutting position using the second traction roller group. Specifically, when the toe position is lagging behind, the traction speed of the second traction roller group is increased accordingly to make the upper roll slightly stretched, causing the toe position to move forward. If the toe position is over-aligned, the traction speed of the second traction roller group is decreased accordingly to make the upper roll slightly piled up, causing the toe position to move slightly backward, achieving precise fine-tuning of the position.

[0034] The frame 1 is also equipped with a shoe sole conveyor belt 6 for conveying single-piece shoe soles. The correction device 2 is located on the left and right sides of the shoe sole conveyor belt 6. The inlet end of the shoe sole conveyor belt 6 is connected to a shoe sole hopper 7. The shoe sole hopper 7 is used to store single-piece shoe soles. It is automatically fed by manual or robotic arms to reduce downtime. The outlet of the shoe sole hopper 7 is located above the shoe sole conveyor belt 6. Push plates are arranged on the shoe sole conveyor belt 6. The push plates push the shoe soles one by one to the correction device 2 for correction. The left and right correction plates of the correction device 2 are respectively located on the left and right sides of the shoe sole conveyor belt 6.

[0035] The adsorption-type variable speed conveying component and the correction device 2 are mounted on the moving platform 8, which can move back and forth relative to the frame 1. The moving platform 8 can move back and forth through linear movement structures such as slider guide rails. Furthermore, during machine adjustment, the moving platform 8 can align the shoe sole with the cutter of the subsequent cutting roller group 52, ensuring cutting quality and yield.

[0036] In the description of this invention, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In summary, the above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.

Claims

1. A disposable single-piece slipper molding equipment, comprising a frame (1), wherein the frame is provided with a continuous roll upper molding device for forming non-woven uppers and a sole feeding device for conveying single-piece foamed soles, characterized in that: The frame (1) is provided with a correction device (2), a spacing adjustment gluing device (3), and a composite device where the shoe sole and the continuous roll shoe upper conveying path intersect. The correction device (2) includes a left correction component (21) and a right correction component (22) that can move relative to each other. The left correction component (21) and the right correction component (22) respectively contact the side of the single-piece sole to correct the left and right directions. The left correction component (21) is eccentrically connected to the left synchronous pulley (23), and the right correction component (22) is eccentrically connected to the right synchronous pulley (24). The left synchronous pulley (23) and the right synchronous pulley (24) are connected to the correction drive mechanism that drives their relative movement via a synchronous belt. The left correction component (21) has... There is a first transverse guide groove, and the right correction component (22) has a second transverse guide groove. The left synchronous wheel (23) is fixedly provided with a first guide post, and the right synchronous wheel (24) is fixedly provided with a second guide post. The left synchronous wheel (23) rotates and drives the first guide post to move along the first transverse guide groove, so that the left correction component (21) moves back and forth. The right synchronous wheel (24) rotates and drives the second guide post to move along the second transverse guide groove, so that the right correction component (22) moves back and forth. The right correction component (22) and the left correction component (21) move closer or further away from each other to achieve the correction of the left and right direction of the shoe sole. The spacing adjustment gluing device (3) includes an adsorption-type variable speed conveying component and a gluing mechanism. The adsorption-type variable speed conveying component is used to adsorb a single shoe sole and send it out at equal intervals. The gluing mechanism is set above the adsorption-type variable speed conveying component and is used to apply glue to the top surface of the single shoe sole. The composite device includes a pressing roller group (4), which is connected to the discharge end of the adsorption-type variable speed conveying component. The pressing roller group (4) is used to press the glued sole and the upper together.

2. The disposable single-piece slipper molding equipment according to claim 1, characterized in that: The discharge end of the composite device is connected to a double traction cutting device (5). The double traction cutting device (5) includes a cutting roller group (52), a first traction roller group (51), and a second traction roller group (53). The cutting roller group (52) is used to cut the composite semi-finished product into molded slippers and send them out. The cutting roller group (52) is located between the first traction roller group (51) and the second traction roller group (53).

3. The disposable single-piece slipper molding equipment according to claim 2, characterized in that: The dual-traction cutting device (5) also includes a toe position sensor (54). A toe position sensor (54) is used to detect the toe position of the composite sole; The first traction roller group (51) is connected to the first traction drive mechanism that drives it to rotate at a constant speed. The second traction roller group (53) is connected to the second traction drive mechanism that drives its rotation, and the second traction drive mechanism is connected to the shoe toe position sensor (54) for signal transmission. The second traction drive mechanism independently adjusts the linear speed of the second traction roller group (53) based on the shoe toe position signal detected by the shoe toe position sensor (54).

4. The disposable single-piece slipper molding equipment according to claim 1, characterized in that: A shoe sole position sensor (33) is provided on one side of the adsorption-type variable speed conveying component. The shoe sole position sensor (33) is used to detect the position of the shoe sole on the adsorption-type variable speed conveying component. The shoe sole position sensor (33) and the power source of the adsorption-type variable speed conveying component are respectively connected to the controller signal.

5. The disposable single-piece slipper molding equipment according to claim 1, characterized in that: The adsorption-type variable speed conveying component includes a suction conveyor belt (31), which is connected to a variable speed drive mechanism that drives it to change its conveying speed. The suction conveyor belt (31) adsorbs single-piece shoe soles and sends them out at equal intervals.

6. The disposable single-piece slipper molding equipment according to claim 1 or 5, characterized in that: The gluing mechanism includes a gluing roller (32), the linear speed of which is greater than the conveying speed of the adsorption-type variable speed conveying component.

7. The disposable single-piece slipper molding equipment according to claim 1, characterized in that: The frame (1) is also provided with a shoe sole conveyor belt (6) for conveying single-piece shoe soles. The correction device (2) is set on the left and right sides of the shoe sole conveyor belt (6). The shoe sole material bin (7) is connected to the inlet end of the shoe sole conveyor belt (6).

8. The disposable single-piece slipper molding equipment according to claim 1, characterized in that: The adsorption-type variable speed conveying component and the correction device (2) are mounted on the mobile platform (8), which can move back and forth relative to the frame (1).

9. The disposable single-piece slipper molding equipment according to claim 1, characterized in that: The left correction component (21) has a first arc surface (211) that conforms to the shape of the left side of the single-piece sole. The right correction component (22) has a second arc surface (221) that conforms to the shape of the right side of the single-piece sole.

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