A folding device for slipper upper

Abstract

The invention discloses a folding device for the upper of slippers, comprising a frame as an installation base, a conveying platform provided on the frame, a folding shaft provided below the conveying platform, a folding wheel installed on the folding shaft, a gap for the folding wheel to extend out, a lifting section provided on the outer contour of the folding wheel, when rotating, the height of the apex of the folding wheel from the surface of the conveying platform gradually rises and folds the upper blank in half and tops it up; a side pressure sheet is also provided on the conveying platform above the folding wheel. Compared with the prior art, the structure of the invention is simpler and more compact, smaller in size, lower in cost, higher in working reliability, and the quality of the output upper blank is more reliable.

Description

Technical Field

[0001] The invention relates to the technical field of slipper manufacturing, in particular to a folding device for a slipper upper. Background Art

[0002] In daily life, slippers are widely used in bathrooms, guesthouses, and other places. They have the advantages of low cost, large-scale use, and easy mass production. Slippers are mainly composed of a sole and an upper. At present, the production of slippers has developed from traditional manual and semi-automatic production to the automated production stage. The traditional slipper manufacturing process generally adopts the method of processing the sole and the upper separately, and then combining the sole and the upper together for cutting and forming. The upper processing and forming refers to processing the uncut upper fabric into an upper blank with a middle bulge and low sides. The existing upper folding device has a complex structure, slow molding speed, and insufficient overall working reliability of the equipment. During the molding process, problems such as displacement and breaking are prone to occur, which affect the subsequent process to produce defective or waste products. Summary of the invention

[0003] In view of the problems in the above-mentioned prior art that the slipper upper folding device has a complex structure, low processing efficiency and insufficient overall working reliability of the equipment, the technical problem solved by the present invention is to provide a slipper upper folding device with a simple structure, greatly improved working reliability and yield.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A folding device for a slipper upper comprises a frame as an installation base, a conveying platform is arranged on the frame, a folding shaft is arranged below the conveying platform, a folding wheel is installed on the folding shaft, a gap is arranged on the conveying platform for the folding wheel to extend out, and two folding plates are arranged at intervals on the frame, the space between the two folding plates constitutes a guide gap for a protrusion of an upper blank to pass through, and the guide gap between the folding plates corresponds to the upper and lower positions of the folding wheel; a lifting section AB is provided on the outer contour of the folding wheel, and when rotating, the folding wheel has a first state in which point A is at the highest point and a second state in which point B is at the highest point, and when the folding wheel rotates from the first state to the second state, the height of the folding wheel vertex from the surface of the conveying platform is gradually lifted and the upper blank is pushed up from the guide gap.

[0006] Various optimizations and explanations can be made in the above technical solutions respectively.

[0007] Preferably, the lifting section AB is arc-shaped, and the distance between point A and the center axis of the folding axis is smaller than the distance between point B and the center axis of the folding axis.

[0008] Preferably, the frame is further provided with two folding plates spaced apart from each other, the space between the two folding plates forming a guide gap for the protrusion of the upper blank to pass through, and the guide gap between the folding plates corresponds to the upper and lower positions of the folding wheels.

[0009] Preferably, the deflection plate comprises a trapezoidal portion at the front end and a rectangular portion at the rear end. The trapezoidal portion is used to guide the upper blank into the bottom of the deflection plate, and the rectangular portion at the rear end is used to form a guide gap for the upper blank to be pushed up and to limit the upper blank at the top portion to the left and right.

[0010] Preferably, the conveying platform is further provided with guide bars, and a gap is provided between the left and right guide bars for the protrusion of the upper blank to pass through.

[0011] Preferably, a folding mechanism is further provided on the frame, and the folding mechanism includes a folding member, and the folding member is located above the guide strip and is used to guide the folding of the raised portion of the shoe upper blank.

[0012] Preferably, the folding mechanism further comprises a fixed seat and a rotating shaft rotatably connected to the fixed seat, and the folding member is connected to the rotating shaft and rotates with the rotating shaft.

[0013] Preferably, the deflecting member is conical in shape, and its conical surface extends laterally into the conveying path of the raised portion of the shoe upper blank.

[0014] Preferably, a spacer sleeve is provided on the outer side of the folding shaft.

[0015] Preferably, a fine pressing roller is provided at the front end of the frame.

[0016] Preferably, a pressure strip is provided on the conveying platform, and a plurality of rolling wheels are provided below the pressure strip along the conveying direction.

[0017] Preferably, the rolling wheel includes a floating wheel and a fixed wheel, the pressure strip is provided with a guide groove for guiding up and down, the floating wheel is installed in the guide groove through the first rotating shaft, the friction coefficients of the surfaces of each two floating wheels opposite to each other on the left and right sides are the same, and the first rotating shaft can move up and down in the guide groove; the fixed wheel is fixedly installed on the pressure strip through the second rotating shaft.

[0018] The beneficial effect of the present invention is that the device has a simpler structure, a smaller size and a simpler process flow by improving the structure of the folding device. The prior art generally uses a top plate in the shape of an inclined surface for periodic ejection, which has very high requirements for accuracy and more accurate requirements for the time of the motor and the top cylinder. The cylinder is a component that is not easy to control, and the stroke of the top is difficult to control, which is not conducive to the yield rate. Compared with the prior art, the present invention adopts a folding wheel rotating to form the product in one time. One rotation of the folding wheel corresponds to a processing cycle of a shoe upper blank. The requirements for accuracy and time in processing are not high, the operation is more convenient, and the yield rate is greatly improved; and the present invention uses a folding wheel with an outer contour of a circular arc at one end to process the shoe upper blank, which solves the problem of the shoe upper blank being broken due to the rigid contact between the shoe upper blank and the top plate in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following describes the relevant details and working principles of the implementation mode and embodiments of the present invention in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall structural principle of the present invention.

[0021] Figure 2 It is a top view of the overall structural principle of the present invention.

[0022] Figure 3 It is a schematic diagram of the structural principle of the folding part of the present invention.

[0023] Figure 4 It is a top view of the structural principle of the folding part of the present invention.

[0024] Figure 5 It is a bottom view of the structural principle of the folding part of the present invention.

[0025] Figure 6 It is a side view of the structural principle of the folding part of the present invention.

[0026] Figure 7 It is a schematic structural diagram of the folded edge portion of the frame of the present invention.

[0027] In the figure: 1, frame; 2, conveying platform; 3, folding shaft; 4, folding wheel; 5, folding plate; 6, spacer; 7, guide bar; 71, folding member; 72, fixed seat; 73, rotating shaft; 8, fine pressure roller; 9, pressure bar; 91, rolling wheel. A and B are two points on the folding wheel. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the implementation mode of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field without making creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0029] Among them, in the description of the present invention, Figure 1 The left side is the front end, Figure 1 The right side is the rear end.

[0030] Reference Figure 1-7 In the embodiment of the present embodiment, a folding device for a slipper upper comprises a frame 1 as an installation base, a conveying platform 2 is provided on the frame 1, a folding shaft 3 is provided under the conveying platform 2, a folding wheel 4 is installed on the folding shaft 3, a gap is provided on the conveying platform 2 for the folding wheel 4 to extend out, and a lifting section AB is provided on the outer contour of the folding wheel 4. When rotating, the folding wheel 4 has a first state in which point A is at the highest point and a second state in which point B is at the highest point. When the folding wheel 4 rotates from the first state to the second state, the height of the top point of the folding wheel 4 from the surface of the conveying platform is gradually lifted and the upper blank is pushed up. When the folding wheel rotates one circle, it corresponds to a folding cycle of the slipper upper.

[0031] The working principle is that after the upper blank is cut into individual upper blanks through the preceding cutting steps, it is sent to the folding device and moves linearly backward on the conveying platform 2, and the folding wheel 4 performs periodic rotation on the folding shaft 3. When the upper blank moves to the top of the folding wheel, the folding wheel rotates to point A, and the folding wheel 4 continues to move, gradually rising and continuously abutting against the upper blank, so that the middle of the single upper blank forms an upward bulge with a low front and a high back, thereby producing the upper blank. When the folding wheel 4 rotates to the B end, the folding of the upper blank is completed and continues to move backward on the conveying platform to be sent to the subsequent processing steps. When the next upper blank moves to the top of the folding wheel 4, the folding wheel 4 rotates a cycle and returns to point A again to start a new round of processing.

[0032] The present invention simplifies the process flow, and the various components cooperate closely with each other. The body is small and the structure is simple. The installation area occupied by the whole machine is greatly reduced during use, and the cost is greatly reduced. The upper blank is formed in one time by a folding wheel 4 whose outer contour is an arc at one end, and the forming speed is fast, which avoids the situation in the prior art that the upper blank is rigidly contacted with the top plate, resulting in the upper blank being broken. Moreover, one rotation cycle of the folding wheel 4 corresponds to the processing time of one upper blank, which enhances the overall processing fluency of the device, reduces the requirements for precision and time, improves the yield rate, and facilitates mass production.

[0033] Based on the above embodiments, further optimization and explanation can be performed.

[0034] The conveying platform 2 is also provided with a guide bar 7, and a gap for the protrusion of the upper stock is provided between the left and right guide bars 7. The guide bar can limit and guide the protrusion of the upper stock after folding, and the height of the protrusion will not return during the transportation process.

[0035] Before welding, the upper stock can be folded again by the folding mechanism, and the folding member 71 is conical, and its conical surface extends transversely into the conveying path of the raised part of the upper stock. The raised part of the upper stock after folding is deflected to one side and folded to one side under the action of the folding member.

[0036] The fixing seat 72 adjusts the position of the folding member 71 on the frame, and the rotating shaft 73 on the fixing seat 72 rotates to adjust the angle of the folding member 71 .

[0037] Further optimization, the lifting section AB is arc-shaped, and the distance between point A and the central axis of the folding axis 3 is smaller than the distance between point B and the central axis of the folding axis 3.

[0038] Further optimization, two folding plates 5 corresponding to the upper and lower folding wheels 4 are arranged above the frame 1, and the space between the two folding plates 5 constitutes a guide gap for the protrusion of the upper blank to pass through. The guide gap formed between the two folding plates 5 arranged at intervals on the conveying platform 2 is convenient for the middle protrusion of the processed upper blank to pass through, and also has the function of maintaining the shape, preventing the middle protrusion of the upper blank from being affected and restored during the processing process, affecting the subsequent process to produce defective or waste products.

[0039] Further optimization, the deflection plate 5 includes a trapezoidal portion at the front end and a rectangular portion at the rear end. The trapezoidal design of the front end of the deflection plate 5 is conducive to the middle protrusion formed by processing to pass through the narrow space between the two deflection plates 5, avoiding the upper blank from being unable to enter the entrance and affecting subsequent processing steps.

[0040] For further optimization, the left and right guide bars 7 are respectively arranged on both sides of the gap of the conveying platform 2 , and the folding wheel 4 is pushed out from the middle of the two guide bars 7 .

[0041] Further optimization, the front end of the guide bar 7 is tilted. The tilted front end of the guide bar 7 can help the conveying platform 2 to feed the upper blank under the guide bar 7.

[0042] Further optimization, the outer sleeve of the hemming shaft 3 is provided with a spacer 6. A spacer is provided on each side of the hemming wheel, and the spacers 6 on both sides are clamped to the middle hemming wheel by locking the nut at the top of the hemming shaft. The spacer 6 and the hemming shaft 3 are relatively fixed, so that the hemming wheel can be fixed relative to the hemming shaft, which is convenient for adjusting the angle of the hemming wheel and the hemming height of the hemming wheel.

[0043] For further optimization, a fine pressing roller 8 is provided at the front end of the frame 1. Before the upper blank is processed, the blank needs to be flattened by the fine pressing roller 8 so that the rolled blank can be kept in a taut state before entering the front station of the conveying platform. When cutting, the cutting length can be uniform and the cutting effect is better.

[0044] For further optimization, pressure strips 9 are provided on both sides of the conveying platform 2, and a number of rolling wheels are provided below the pressure strips 9 along the conveying direction. During the conveying process of the upper blank, the raw material itself is relatively light and easily affected by the device and wind force to float and move, which hinders the subsequent folding processing. The rolling wheels below the pressure strips 9 arranged on the conveying platform 2 can always press the upper blank on the conveying platform 2 during the conveying process to prevent the upper blank from running off the track during the conveying process.

[0045] Further optimization, the rolling wheel 91 includes a floating wheel and a fixed wheel, the press strip 9 is provided with a guide groove for guiding up and down, the floating wheel is installed in the guide groove through a first rotating shaft, and the first rotating shaft can move up and down in the guide groove; the fixed wheel is fixedly installed on the press strip 9 through a second rotating shaft. When the folding wheel rotates to push the upper blank up, the two folding plates 5 limit the middle part of the upper to the left and right. When pushing up, the left and right widths are very narrow and the folded upper is formed from the middle to form a trapezoidal shape, and the fixed wheel can press the two sides of the upper blank to prevent the entire upper blank from moving between the two folding plates 5 when it is pushed up, and can press the upper blank to prevent it from being skewed, which is also beneficial to the forming effect of the upper. Generally speaking, the fixed wheel is arranged in front of the floating wheel, or the fixed wheels are arranged at the front and rear ends, and the floating wheel is arranged in the middle, the purpose is to confirm the position of the front part of the single blank when the upper blank begins to fold, and play a positioning role. At this time, as the shoe upper blank is conveyed forward, when it passes under the floating wheel, the floating wheel will be lifted up by the shoe upper blank, because the floating wheel itself and the weight of the bearing apply a certain friction force to the shoe upper blank, thereby guiding the conveying along the conveying direction. At the same time, since the middle of the shoe upper bulges upward when folding, the two sides of the shoe upper blank will retract toward the middle, and the shoe upper is gradually raised from front to back, so the retraction amount will gradually increase from front to back. Compared with the fixed wheel, the floating wheel facilitates the inward retraction of the shoe upper blank, and will not prevent the blank from being unable to retract or being torn due to pressing on the blank.

[0046] The friction coefficients of the surfaces of the two floating wheels on the left and right sides are the same. If the friction coefficients of the left and right sides are different, the resistance of the floating wheels on both sides will be different, so the indentation amount will be different, causing the folded shoe upper to be crooked.

[0047] The above is a preferred embodiment of the present invention, and it should be noted that the protection scope of the present invention is not limited thereto. For those skilled in the art, without departing from the equivalent inventive concept of the technical scope disclosed by the present invention, several improvements and modifications or equivalent substitutions can be made, which are also regarded as the protection scope of the present invention.

Claims

1. A folding device for a slipper upper, comprising a frame (1) as a mounting base, a conveying platform (2) being arranged on the frame (1), characterized in that: A folding shaft (3) is provided below the conveying platform (2), a folding wheel (4) is mounted on the folding shaft (3), a gap is provided on the conveying platform (2) for the folding wheel (4) to extend out, and two folding plates (5) are also provided on the frame (1) at intervals, the space between the two folding plates (5) forms a guide gap for the protrusion of the upper blank to pass through, and the guide gap between the folding plates (5) corresponds to the upper and lower positions of the folding wheel (4); the outer contour of the folding wheel (4) is provided with a lifting section AB, the lifting section AB is arc-shaped, and the distance between point A and the central axis of the folding shaft (3) is smaller than the distance between point B and the central axis of the folding shaft (3); when rotating, the folding wheel (4) has a first state in which point A is located at the highest point and a second state in which point B is located at the highest point, and when the folding wheel (4) rotates from the first state to the second state, the height of the top of the folding wheel (4) from the surface of the conveying platform (2) is gradually raised and the upper blank is pushed up from the guide gap; The frame (1) is also provided with a folding mechanism, comprising a folding member (71), the folding member (71) being located above the guide bar (7) and being used for guiding the folding of the raised portion of the upper blank; the folding mechanism also comprises a fixed seat (72) and a rotating shaft (73) rotatably connected to the fixed seat (72), the folding member (71) being connected to the rotating shaft (73) and rotating with the rotating shaft (73); the folding member (71) is in a conical shape, and its conical surface extends transversely into the conveying path of the raised portion of the upper blank.

2. The folding device for a slipper upper according to claim 1, characterized in that: The deflecting plate (5) comprises a trapezoidal portion at the front end and a rectangular portion at the rear end.

3. The folding device for a slipper upper according to claim 1, characterized in that: A guide bar (7) is also provided on the conveying platform (2), and a gap is provided between the left and right guide bars (7) for the protrusion of the shoe upper blank to pass through.

4. The folding device for a slipper upper according to claim 1, characterized in that: The outer portion of the folding shaft (3) is provided with a spacer sleeve (6), and the front end of the frame (1) is provided with a fine pressing roller (8).

5. The folding device for a slipper upper according to claim 1, characterized in that: The conveying platform (2) is provided with pressure strips (9) arranged on the left and right sides respectively, and a plurality of rolling wheels (91) are arranged below the pressure strips (9) along the conveying direction.

6. The folding device for the upper of a slipper according to claim 5, characterized in that: The rolling wheel (91) comprises a floating wheel and a fixed wheel. The pressure strip (9) is provided with a guide groove for guiding up and down. The floating wheel is installed in the guide groove via a first rotating shaft. The friction coefficients of the surfaces of the two floating wheels opposite to each other on the left and right sides are the same. The first rotating shaft can move up and down in the guide groove. The fixed wheel is fixedly installed on the pressure strip (9) via a second rotating shaft.

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