Shoe upper lining edge trimming machine

Abstract

The invention provides a technology of an upper lining edge trimmer which is more energy-saving and more flexible than an upper lining edge trimmer in the prior art. At least two circular knives which can be driven to rotate around respective axial leads are arranged, the cutting edge of one circular knife and the cutting edge of the other circular knife form scissors-shaped intersection, and a workpiece material which is moved to the intersection point of the scissors-shaped intersection in a manner of crossing the cutting edges can be sheared off; a structure capable of automatically compensating abrasion of the circular knife is arranged, and a material blocking part with an adjustable material passing gap is further arranged.

Description

Technical Field

[0001] The invention relates to a shoe upper inner lining trimming machine and the fields of electronic and electrical control, in particular to the field of a shoe upper inner lining trimming machine. Background Art

[0002] The existing disclosed technology of shoe upper inner lining trimming machine needs to use the reciprocating motion of the blade to complete the trimming of the shoe upper inner lining. For example, the shoe upper inner lining trimming machines in the patent application documents with application numbers CN201320813878.8, CN201920103438.0, CN201810105311.2, and CN202110313080.6 are all based on this principle structure. Since the rotational motion of the motor needs to be converted into reciprocating motion to drive the tool to perform cutting action, the structure is complex, the volume, weight, vibration, noise, and energy consumption are relatively large, and there is only one trimming direction. When trimming at a faster speed, an obvious jagged edge will be formed on the workpiece, and the knife needs to be sharpened after working for several hours or days. Summary of the invention

[0003] The purpose of the present invention is to propose a technology of a shoe upper lining trimming machine which is more energy-efficient, more flexible and convenient to store or use, portable, has a faster trimming speed, a more beautiful trimming effect, lower noise, does not require frequent sharpening, and has a lower cost than the prior art shoe upper lining trimming machine. The shoe upper lining trimming machine manufactured based on the technology proposed by the present invention has been used for trimming work for more than 2 years, and has significantly achieved all the purposes of the present invention.

[0004] The present invention is provided with at least two circular knives that can be driven to rotate around their respective axis lines, wherein the blade of one circular knife and the blade of the other circular knife form a scissor-shaped intersection and at least one contacting intersection, and can cut the workpiece material that moves from the outside to the contacting intersection across the blades; for example, circular knife 1 and circular knife 2 in embodiment 1, circular knife 21 and circular knife 22 in embodiment 2, circular knife 51 and circular knife 52 in embodiment 3, and circular knife 81 and circular knife 82 in embodiment 4; the rotation direction of the circular knife is set according to the moving direction of the workpiece when being trimmed, and the rotation direction that helps the trimmed material across the blades to move to the contacting intersection of the scissor-shaped intersection should be selected, so that the trimming work is light and smooth. When the scissor-shaped intersection and the contacting intersection formed by the blades of the two circular knives are both set to 2, the inner trimming machine of the present invention can adopt a trimming direction that is more suitable for trimming the trimmed workpiece by controlling the direction of rotation of the motor; for example, embodiment 1, embodiment 2, etc.

[0005] The "scissors-shaped intersection" mentioned in the present application refers to, at least locally, that the blades of at least two circular knives in the area near the contact intersection that has a shearing effect on the trimmed workpiece material form a "scissors-shaped intersection".

[0006] In order to eliminate the influence caused by thermal expansion and contraction or circular knife wear, the present invention at least has a structure that can automatically keep the intersection points of the scissors-shaped intersection in contact. This structure is that at least one of the circular knives can move forward and backward in the direction that keeps the intersection points of the scissors-shaped intersection in contact. For example, the knife shaft 5 that fixes the circular knife 1 in Example 1 is set to be able to slide in the inner rings of bearings 13 and 15, the knife shaft 25 that fixes the circular knife 21 in Example 2 is set to be able to slide in the inner rings of bearings 33 and 35, and the inner ring of the bearing 63 that fixes the circular knife 51 in Example 3 is fixed to the knife shaft 55 fixed on the lower knife seat 59 that is set to be able to pitch forward and backward. In the above and Example 4, the vertical knife shaft 85 of the inner ring of the bearings 93 and 95 that fix the outer ring and the circular knife 81 is configured to be able to slide in the shaft hole on the frame 90; and an elastic part is provided to drive the circular knife that can advance and retreat in the direction of keeping the intersection points of the scissors-shaped intersection in contact to advance in the direction of keeping the intersection points of the scissors-shaped intersection in contact, such as the spring 4 of Example 1, the spring 24 of Example 2, the U-shaped spring sheet 54 of Example 3, and the inverted J-shaped spring sheet 84 of Example 4.

[0007] In order to prevent the non-cutting parts of the workpiece from being cut by mistake during operation, such as the upper and the edge of the upper of the shoe upper, the present invention also provides a stopper part with an adjustable feeding gap. The stopper part prevents the part of the trimmed workpiece whose thickness exceeds the feeding gap formed by the stopper part from crossing the blade near the intersection of the scissor-shaped cross contact to achieve the purpose of preventing the workpiece from being cut by mistake; for example, a feeding gap is formed between the stopper strip 3 and the circular knife 2 in Example 1, a feeding gap is formed between the stopper plate 23 and the circular knife 22 in Example 2, a feeding gap is formed between the stopper strip 53 and the circular knife 51 in Example 3, and a feeding gap is formed between the stopper sheet 83 and the circular knife 82 in Example 4; the set stopper part can pre-adjust the feeding gap before starting the machine to adapt to workpieces with different inner thicknesses. If necessary, a mechanism can be provided to adjust the feeding gap at any time without interrupting the trimming process, such as in Example 3 and Example 4. In the second embodiment, the material gap can be adjusted by applying a force to the material blocking plate 23 to move it toward the machine case at any time during the trimming process or at other times. In addition, when the shoe upper inner lining trimming machine of the present invention does not have or removes the material blocking part and the mechanism that only allows the trimming machine to adjust the material gap at any time without interrupting the trimming process, it can still be used for trimming, such as trimming the sole.

[0008] Furthermore, a movable clamping plate, a nut and a tightening screw with a rotary handle can be provided to facilitate fixing the shoe upper inner lining trimming machine on a workbench, a sewing machine, a computer sewing machine, or a work surface, a table, a stool, or other objects, and the height of the shoe upper inner lining trimming machine can be adjusted while being fixed. For example, the movable clamping plates 75, 76, the nut 77 and the tightening screw 78 with a rotary handle in Example 3 and the movable clamping plates 100, 101, the nut 97 and the tightening screw 98 with a rotary handle in Example 4.

[0009] In order to implement the technology of the present invention, there are or may be other components that need to be set up, such as control circuits, fasteners, protective devices, etc., because these are simple and do not require creative tasks for general technicians in the fields of shoe upper lining trimming machines, electronics, and electrical control, so this application should not need to be fully described in detail. Beneficial Effects

[0010] The upper lining trimming machine based on the technology proposed by the present invention has the following beneficial effects: the energy consumption is only 10% or even less than 5% of the energy consumption of the upper lining trimming machine in the prior art, and the weight is less than 10% of the weight of the upper lining trimming machine in the prior art. At the same time, the trimming speed is faster and has a more beautiful trimming effect and lower noise, smaller vibration, higher reliability, and the trimming function covers and exceeds the functional scope of the upper lining trimming machine in the prior art. The entire trimming machine can be conveniently and quickly taken, stored, and carried, and can work for at least several months without sharpening, and can even be achieved without sharpening during the entire life cycle of the upper lining trimming machine product. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In this application document, the front view refers to what is seen from the front of the shoe upper inner lining trimming machine, the right front view refers to what is seen from the left and front of the trimming machine at the same time, the right front top view refers to what is seen from the left, front, and top of the trimming machine at the same time, and so on.

[0012] Figure 1 It is a schematic diagram of the right front upper assembly view of Example 1 of the present invention.

[0013] Figure 2 It is a schematic diagram of the right front upper assembly view of Example 1 with the material blocking strip 3 hidden.

[0014] Figure 3 It is a schematic diagram of the right front top assembly view of Example 1, in which the material blocking strip 3, the chassis 10 and other parts are hidden.

[0015] Figure 4 It is a schematic diagram of the lower right rear view of the material blocking strip 3 of Example 1.

[0016] Figure 5It is a schematic diagram of the right front view assembly diagram of embodiment 2 of the present invention.

[0017] Figure 6 This is a schematic diagram of the right front view assembly diagram of Example 2, in which the guard plate 27 and four screws for fixing the guard plate are hidden.

[0018] Figure 7 For Example 2 based on Figure 6 The right front assembly diagram of the baffle plate 23 is hidden again.

[0019] Figure 8 For Example 2 based on Figure 7 The right front view assembly diagram of the chassis 30 etc. is also hidden.

[0020] Fig. 9 Schematic diagram of the front bottom view of the baffle plate 23 of Example 2.

[0021] Fig.10 This is a schematic diagram of the left front top assembly view of Example 3 of the present invention with the synchronous belt hidden.

[0022] Fig.11 This is a schematic diagram of the right front bottom assembly view of Example 3 with the synchronous belt hidden.

[0023] Fig.12 This is a schematic diagram of the left front top exploded view of Example 3 with the synchronous belt hidden.

[0024] Fig.13 It is a schematic diagram of the upper right rear view of the lower knife seat of the replaceable lower knife seat 59 of Example 3.

[0025] Fig.14 This is a schematic diagram of the right front top assembly view of Example 4 of the present invention with the synchronous belt hidden.

[0026] Fig.15 This is a schematic diagram of the right front top assembly view of Example 4, in which the frame 90, movable card plates 100, 101, etc. are hidden.

[0027] Fig.16 Based on Example 4 Fig.15 The right front upper view assembly diagram of the guard plate 87, etc. is hidden again.

[0028] Fig.17 Based on Example 4 Fig.16 The right front upper view assembly diagram of the circular knife 81 is hidden again.

[0029] Fig.18 Based on Example 4 Fig.17 The lower right rear view assembly diagram of the blocking piece 83 and the horizontal axis seat 89 is hidden again. DETAILED DESCRIPTION

[0030] The circular knife used in the present invention can be selected from the existing circular knives on the market, including the circular knives on the ready-made upper lining trimming machines on the market, or a circular knife designed by oneself or modified from the existing circular knives on the market. Example 1

[0031] Figure 1 , Figure 2 , Figure 3 , Figure 4 It is a perspective schematic diagram of this embodiment. The circular knife 1 and the circular knife 2 are fixed on the knife shaft 5 and the knife shaft 6 respectively. The knife shaft 6 is fixed relative to the inner ring of the bearing 14 and the bearing 16, and the knife shaft 5 is set to be able to slide axially in the inner ring of the bearing 13 and the bearing 15, so the spring 4 in the compressed state has the function of keeping the two circular knives in contact. The output shaft of the motor 11 is connected to the knife shaft 6 through the coupling 19, and the gear 18 fixed to the knife shaft 6 and the gear 17 fixed to the knife shaft 5 are used for transmission between the knife shaft 6 and the knife shaft 5. In order to adapt to the trimming workpieces with different inner thicknesses, the material blocking strip 3 can adjust the angle with the axis of the knife shaft 5 as the axis to change the material clearance. The screw 8 and the gasket 12 are used to fix the material blocking strip 3 to the connecting column 7 fixed to the chassis 10. The pit 20 is on the side of the stopper strip 3 facing the circular knife 1, and the circular knife 1 enters the pit 20 of the stopper strip 3 without contacting the pit bottom and pit wall of the pit 20, so that miscutting can be better prevented. Obviously, as long as the axis center line of the knife shaft 5 in this embodiment is set to overlap with the axis center line of the knife shaft 6 in the top view and bottom view projection diagram, the blades of the circular knife 1 and the circular knife 2 can form two scissor-shaped intersections and two contacting intersections. When the moving direction of the workpiece needs to be changed when being trimmed, it is only necessary to change the steering direction of the motor 11 and adjust the angle of the stopper strip 3 when necessary; when the moving direction of the workpiece being trimmed is from left to right, the scissor-shaped intersection on the left is used, and the circular knife 2 should rotate clockwise. When the moving direction of the workpiece being trimmed is from right to left, the scissor-shaped intersection on the right is used, and the circular knife 2 should rotate counterclockwise. Example 2

[0032] Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9The figure is a perspective schematic diagram of the present embodiment. The circular knife 21 and the circular knife 22 are fixed on the knife shaft 25 and the knife shaft 26 respectively. The knife shaft 26 is fixed relative to the inner ring of the bearing 34 and the bearing 36, and the knife shaft 25 is set to slide in the inner ring of the bearing 33 and the bearing 35, so the spring 24 in the compressed state has the function of keeping the two circular knives in contact. The output shaft of the motor 31 is connected to the knife shaft 26 through the coupling 39, and then the friction between the circular knife 22 and the circular knife 21 is used to form a transmission relationship with the circular knife 21. The guard plate 27 is fixed on four connecting columns fixed on the chassis 30, and the connecting column 42 is also used as a guide column of the baffle plate 23. The material blocking plate 23, the connecting column 42 and the connecting column 41 which also serves as the guide column of the material blocking plate 23, and the springs 38 and 37 respectively sleeved on the two guide columns enable the material blocking plate 23 to adjust its position by rotating the screw 28 to change the material passing gap; the nut 32 is used to lock the screw 28 to the chassis 30 after the adjustment of the material blocking plate 23 is completed. As long as the axis of the knife shaft 25 in this embodiment is set to overlap with the axis of the knife shaft 26 in the top view and the bottom view projection, the trimming workpiece can be trimmed in a moving direction that is more convenient for trimming by controlling the direction of the motor 31. Example 3

[0033] Fig.10 , Fig.11 , Fig.12 This is a perspective schematic diagram of the embodiment in which the synchronous belt is hidden. Fig.12It is an exploded view. The circular knife 51 is fixed on the outer ring of the bearing 63, the inner ring of the bearing 63 is fixed on the knife shaft 55 fixed on the lower knife seat 59, and the circular knife 52 is fixed on the knife shaft 56. The knife shaft 56 is fixed relative to the inner ring of the bearing 64 and the bearing 66; the U-shaped spring sheet 54, screws 71, 72, 73, 74 and 4 gaskets connect the lower knife seat with the frame 60, and the U-shaped spring sheet 54 in the expanded state can keep the two circular knives in contact. Use a suitable synchronous belt to make the synchronous pulley 67 and the synchronous pulley 68 form a transmission relationship, so that the power of the motor 61 can be transmitted to the knife shaft 56, and then drive the circular knife 51 in the form of friction transmission. In order to adapt to the trimming workpieces with different inner thicknesses, the stopper strip 53 can be adjusted to a preset angle with the axis of the knife shaft 56 as the axis. The screw 58 and the gasket are used to fix the stopper strip 53 adjusted to the preset angle on the stopper strip movable seat 57 which can rotate a certain angle with the axis of the knife shaft 56 as the axis. The purpose of setting the stopper strip movable seat 57 is to adjust the angle of the stopper strip 53 at any time to change the material gap during the trimming process when trimming the trimming workpiece with a varying inner thickness, such as a trimming workpiece with an overlapped seam inside. The spring 59 provides the stopper strip movable seat 57 with a driving force to return to the original angle. 62, 65, 69, 70 are screws installed on the screw holes of the stopper strip movable seat 57. The heads of these four screws enter the V-shaped groove 79 on the frame 60. The depth of entry is based on the stopper strip movable seat 57 just being able to rotate. Fig.10 , Fig.11 , Fig.12 The trimming direction of the trimming machine shown is that the trimmed workpiece moves from right to left, and the circular knife 52 rotates clockwise; however, as long as the axis line of the knife shaft 55 and the axis line of the knife shaft 56 in this embodiment are set to overlap in the top view and bottom view projection diagrams, and Fig.13 If the lower knife seat 59 is replaced by the lower knife seat shown in the figure, the trimming machine of this embodiment can have two trimming directions, and the trimming direction can be selected by controlling the direction of the motor 61.

[0034] The present embodiment also provides at least movable clamping plates 75, 76, nuts 77 and a tightening screw 78 with a rotary handle so that the trimmer can be fixed on a workbench or a sewing machine, a computer car or other equipment, and the height of the trimmer can be adjusted when fixed: the thickness and width of the frame 60 can be set as follows Fig.10 , Fig.11 As shown, the movable clamping plates 75 and 76 pass through the slots on the movable clamping plates, and when a force parallel to the height direction of the frame is applied to the movable clamping plates at a certain distance from the slot ends, such as where the nut 77 is installed or in the vicinity thereof, the movable clamping plates should be able to be locked on the frame; therefore, when the tightening screw 78 with a rotary handle tightens the object between the movable clamping plates 75 and 76, such as a workbench cutting board, the trimmer can be fixed on the workbench cutting board. Example 4

[0035] Fig.14 , Fig.15 , Fig.16 , Fig.17 , Fig.18 The perspective diagram of this embodiment. The circular knife 82 is fixed on the horizontal knife shaft 86 fixed to the synchronous wheel 98 and the inner ring of the bearings 94 and 96, and the circular knife 81 is fixed on the outer ring of the bearings 95 and 93 fixed on the vertical knife shaft 85. The shaft hole on the frame 90 for mounting the vertical knife shaft 85 is set to allow the vertical knife shaft 85 to slide in the hole, and the inverted J-shaped spring piece 84 is fixed to the frame 90 by screws. The cooperation between the inverted J-shaped spring piece 84 and the shaft cap 92 fixed to the vertical knife shaft 85 by screws 88 can not only prevent the blocking piece 83 fixed to the vertical knife shaft 85 by screws from rotating with the circular knife 81, but also enable the circular knife 81 to move in the direction of keeping contact with the circular knife 82. The trigger 102 fixed on the shaft cap 92 is used to bear the power to rotate the shaft cap 92. When the force to rotate the shaft cap 92 is greater than the force of the inverted J-shaped spring sheet 84 to prevent the shaft cap 92 from rotating, the blocking piece 83 will naturally rotate accordingly, thereby achieving the purpose of adjusting the angle of the blocking piece 83 to change the material gap; the preset angle of the blocking piece 83 is adjusted after loosening the screw 88 when the trimmer is not working. The guard plate 87 is fixed to the horizontal shaft seat 89 fixed to the frame 90 by screws, the outer ring of the bearing 94 is fixed to the horizontal shaft seat, and the outer ring of the bearing 96 is fixed to the frame 90. The motor 91 is driven to the circular knife 82 through the synchronous wheel 97 fixed on its output shaft and the synchronous wheel 98 on the horizontal knife shaft 86 and the synchronous belt installed on the two synchronous wheels, and the circular knife 81 is driven by the friction transmission between the circular knives. The functions of the movable clamping plates 100, 101, the nut 97, and the tightening screw 98 with a rotary handle in this embodiment are the same as those of the corresponding parts in Example 3 of the present invention, and can also be used to fix the trimmer on a workbench, sewing machine, computer car and other equipment. Example 5

[0036] The energy consumption of the shoe upper inner lining trimming machine based on the technology of the present invention is much lower than that of the shoe upper inner lining trimming machine in the prior art. A battery can be set to serve as a power source for the shoe upper inner lining trimming machine based on the technology of the present invention. A battery with an energy storage capacity of about 100 watt-hours can enable the trimming machine of the present invention to work for more than 8 hours; and the battery can be set to be a common battery for electric tools, for example, it can be set to be powered by a battery pack of a lithium-powered pistol drill currently available on the market, etc. Example 6

[0037] The first or second embodiment can be simply changed to become a new embodiment that can automatically keep the contacting intersections of the scissor-shaped intersection in contact without the need for the knife shaft to be axially movable. For example, a spline is set at one end of the knife shaft 5 of the first embodiment where the circular knife 1 is installed, and the inner hole of the circular knife 1 is set as a spline hole that matches the spline on the knife shaft 5, so that the circular knife 1 can slide axially on the knife shaft 5, and the knife shaft 5 is fixed to the inner ring of the bearing 13 and the bearing 15, so that the purpose of the present invention can be achieved as in the first embodiment.

[0038] More embodiments can be proposed based on the present invention, for example, a foot sensor or switch is provided to control the direction and rotation speed of the circular knife; for example, the lower limbs can be used to control the material blocking member at any time during the trimming process, etc.

[0039] In all embodiments of the present invention, any details not mentioned in the present application document can be understood to be arranged in a usual logical manner. For example, the bearings in each embodiment, any place where the outer ring is installed or fixed without mentioning it can be understood to be fixed to the chassis or frame; all embodiments can adopt a driver or drive circuit that can control the speed and direction of the motor. The motor used can be selected from brushless motors, DC motors, stepper motors, AC motors and other motor types, and can be equipped with and connected to a corresponding power supply, a driver or drive circuit that can control the selected motor, switches and other related devices.

[0040] This application document may not mention some parts that are obvious and only require simple selection, calculation, and setting, such as the thickness and length settings of the clamping plate in Example 3 and Example 4, and the cover covering the synchronous belt and synchronous pulley, and the chip guide parts that may be needed, etc.

[0041] The description of this application does not limit the scope of protection requested by this application. Generally skilled persons in related fields such as upper lining trimming machines, electronics, and electrical control can make changes to the technology and implementation methods disclosed in this application without creative work, and all changes are within the scope of protection requested by this application.

Claims

1. A shoe upper inner lining trimming machine, comprising a power supply, a motor control and drive circuit, a switch, a motor, a transmission member, a shaft, a bearing, a chassis or a frame, etc., characterized in that: At least two circular knives that can be driven to rotate around their respective axis lines are provided, wherein the blade of one circular knife forms a scissor-shaped intersection with the blade of the other circular knife and has at least one contacting intersection point, and can shear the workpiece material that moves from the outside to the contacting intersection point across the blades; at least a structure that can automatically keep the contacting intersection points of the scissor-shaped intersection in contact is provided, and this structure lies in that at least one of the circular knives can advance and retreat in the direction that keeps the contacting intersection points of the scissor-shaped intersection in contact, and an elastic part is provided to drive the circular knife that can advance and retreat in the direction that keeps the contacting intersection points of the scissor-shaped intersection in contact to advance in the direction that keeps the contacting intersection points of the scissor-shaped intersection in contact.

2. A shoe upper lining trimming machine as claimed in claim 1, characterized in that: At least a material blocking part with adjustable material gap is provided.

3. A shoe upper lining trimming machine as claimed in claim 2, characterized in that: At least one mechanism is provided to adjust the feeding gap at any time without interrupting the trimming process.

4. A shoe upper inner lining trimming machine as claimed in claim 1, 2 or 3, characterized in that: At least a movable clamping plate, a nut and a tightening screw with a rotary handle are provided to facilitate fixing the shoe upper inner lining trimming machine on a workbench or other objects.

5. A shoe upper inner lining trimming machine as claimed in claim 1, 2 or 3, characterized in that: At least a battery is provided as a power source.

6. A shoe upper inner lining trimming machine as claimed in claim 4, characterized in that: At least a battery is provided as a power source.

7. A shoe upper inner lining trimming machine as claimed in claim 1, 2 or 3, characterized in that: At least movable clamping plates 75, 76, a nut 77 and a tightening screw 78 with a rotary handle are provided to facilitate fixing the shoe upper inner lining trimming machine on a workbench or other objects.

8. A shoe upper inner lining trimming machine as claimed in claim 7, characterized in that: At least a battery is provided as a power source.

9. A shoe upper inner lining trimming machine as claimed in claim 1, 2 or 3, characterized in that: At least movable clamping plates 100, 101, a nut 97, and a tightening screw 98 with a rotary handle are provided to facilitate fixing the shoe upper inner lining trimming machine on a workbench or other objects.

10. A shoe upper inner lining trimming machine as claimed in claim 9, characterized in that: At least a battery is provided as a power source.

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