Feeding device for straight buttonholing machine

Abstract

The utility model belongs to the technical field of straight buttonholing machines, and discloses a feeding device for a straight buttonholing machine. The cloth flattening device comprises a rack, traction assemblies used for pulling cloth to move are arranged on the rack, each traction assembly comprises a lower flattening roller, an upper flattening roller arranged above the lower flattening roller and a first motor, the upper flattening rollers and the lower flattening rollers are matched and abut against the cloth, and an output shaft of each first motor is fixed to a rotating shaft of the corresponding lower flattening roller; the rack is provided with a driving assembly used for driving the upper flattening roller to move up and down. The upper flattening roller is lifted to a certain height through the driving assembly, the distance between the upper flattening roller and the lower flattening roller is suitable for cloth to be punched to penetrate through, then a worker enables the cloth to be punched to penetrate through the two traction assemblies, then the upper flattening roller is driven to reset through the driving assembly, and the cloth to be punched is punched. And the upper flattening roller and the lower flattening roller are matched and press the cloth to be punched, so that buttonhole punching operation can be carried out on the cloth with different thicknesses.

Description

Technical Field

[0001] The utility model relates to the technical field of flat head buttonhole machines, in particular to a feeding device for flat head buttonhole machines. Background Art

[0002] Buttonhole machines are mainly used to process buttonholes in various types of clothing. They are divided into flat-head buttonhole machines (straight-eye machines) and round-head buttonhole machines (phoenix-eye machines), and are further divided into two types: finishing and non-finishing. They are a very important special equipment in clothing machinery.

[0003] A Chinese utility model patent with publication number CN220724501U discloses an auxiliary feeding device for a flat-head buttonhole machine, comprising a base, an operating table arranged above the base, two vertical plates fixedly mounted on the top of the operating table, a motor fixedly mounted on the right side of the right vertical plate, the motor output shaft is rotatably connected to the right side of the left vertical plate, and a feeding mechanism is arranged between the motor and the vertical plate; the same mounting plate is fixedly mounted on the top of the two vertical plates, a support plate is fixedly mounted on the top of the front side of the mounting plate, a lifting mechanism is arranged at the bottom of the support plate, the feeding mechanism comprises a conveying shaft and two feeding rollers, the same conveying shaft is rotatably mounted between the two vertical plates, the conveying shaft is located above the motor output shaft, feeding rollers are fixedly mounted on the motor output shaft and the conveying shaft, and a gear mechanism is arranged between the motor and the conveying shaft.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: due to the difference in thickness of fabrics for summer and winter clothing, the feeding mechanism needs to have the function of adjusting according to the thickness of different fabrics. In the above-mentioned technology, the two feeding rollers are rotatably installed between two vertical plates, and the distance between the two feeding rollers is inconvenient to adjust, which makes it inconvenient to perform button hole punching operations on fabrics of different thicknesses, and therefore needs to be improved. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a feeding device for a flat buttonhole machine.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: a feeding device for a flat-head buttonhole machine, comprising a frame, a traction assembly for pulling the cloth to move is arranged on the frame, the traction assembly is provided with two groups and is symmetrically arranged about the frame, each group of the traction assembly comprises a first mounting block fixed to the top of the frame, a second mounting block fixed to the top of the frame and symmetrically arranged with the first mounting block, a lower flattening roller rotatably mounted between the first mounting block and the second mounting block, an upper flattening roller arranged above the lower flattening roller, and a first motor arranged on the side wall of the second mounting block, the upper flattening roller cooperates with the lower flattening roller and presses against the cloth, the output shaft of the first motor passes through the second mounting block and is fixed to the rotating shaft of the lower flattening roller, and a driving assembly for driving the upper flattening roller to move up and down is arranged on the frame.

[0007] By adopting the above technical scheme, when punching buttonholes on fabrics of different thicknesses, the staff raises the upper flattening roller to a certain height through the driving assembly so that the distance between the upper flattening roller and the lower flattening roller is suitable for the fabric to be punched to pass through. Then the staff passes the fabric to be punched through the two sets of traction assemblies, and then drives the upper flattening roller to reset through the driving assembly until the upper flattening roller cooperates with the lower flattening roller and presses the fabric to be punched. After the two first motors work, the output shaft ends of the two first motors drive the lower flattening roller to rotate around the rotating axis of the lower flattening roller, and then the fabric placed between the lower flattening roller and the upper flattening roller is pulled to achieve feeding, which changes the problem of difficult adjustment of the distance between the upper flattening roller and the lower flattening roller in the traditional design, and is conducive to buttonhole punching operations on fabrics of different thicknesses.

[0008] Furthermore, the driving assembly includes a driving motor fixed to the bottom of the frame, a driving gear fixed to the end of the output shaft of the driving motor, a threaded rod penetrating the bottom of the frame and rotatably connected to the frame, a driven gear fixed to the lower end of the threaded rod and meshing with the driving gear, and a first connecting block sleeved on the threaded rod and threadedly connected to the threaded rod, the threaded rod penetrates the first mounting block and is clearance-matched with the first mounting block, two first connecting blocks are provided, and the threaded rod and the two first connecting blocks are located on the same side of the frame, and the driving assembly also includes a guide rod fixed to the second mounting block, three guide rods are provided, and the threaded rod and the three guide rods are distributed in a rectangular array with respect to the frame. , wherein the lower ends of the two guide rods are respectively fixed to the tops of the two second mounting blocks, and the lower end of the other guide rod is fixed to the top of the first mounting block on the same side of the threaded rod, and the guide rod on the same side of the threaded rod passes through the first connecting block and slidably cooperates with the first connecting block; the driving assembly also includes a second connecting block which is sleeved on the guide rod and slidably cooperates with the guide rod. The second connecting block is provided with two, and the two guide rods on the side away from the threaded rod respectively pass through the two second connecting blocks and slidably cooperate. The upper flattening roller is rotatably installed between the first connecting block and the second connecting block and is arranged parallel to the lower flattening roller, and the two first connecting blocks are connected to the two second connecting blocks by a connecting piece.

[0009] By adopting the above technical solution, the staff starts the driving motor. After the driving motor starts working, it drives the active gear, the driven gear meshing with the active gear, and the threaded rod to move. Since the threaded rod is threadedly connected to the first connecting block, the guide rod is slidingly matched with the second connecting block, and the upper flattening roller is rotatably installed between the first connecting block and the second connecting block, the circumferential rotation of the upper flattening roller around the threaded rod is limited. Under the action of the connecting piece, the two upper flattening rollers can move up and down during this process, so that the distance between the upper flattening roller and the lower flattening roller can be adjusted to suit fabrics of different thicknesses.

[0010] Furthermore, the lower flattening roller includes a cylindrical shell with an opening at one end and an end cover arranged at the open end of the shell, the structure of the upper flattening roller is exactly the same as that of the lower flattening roller, a terminal block is detachably connected to the inside of the shell, an electric heating rod is arranged on the terminal block, a wire group electrically connected to the electric heating rod is arranged on the terminal block, the wire group is electrically connected to an external power supply, the first mounting block and the first connecting block are both provided with a center hole for the wire group to pass through, an outer sleeve mounted on the outside of the wire group is fixed on the side of the end cover away from the shell, the outer sleeve is rotatably connected to the first mounting block or the first connecting block, an inner sleeve is fixed on the side of the terminal block close to the first connecting block, the inner sleeve is arranged in the outer sleeve and fixed to the first mounting block or the first connecting block.

[0011] By adopting the above technical scheme, since the cloth is usually prone to wrinkles due to folding when stored, the staff turns on the switch of the electric heating rod while pulling the cloth for feeding, so that the electric heating rod works and generates heat, thereby heating the inside of the shell of the upper flattening roller and the inside of the shell of the lower flattening roller. The upper flattening roller cooperates with the lower flattening roller to iron the cloth during the feeding process to eliminate wrinkles, which is beneficial for the flat-head buttonhole machine to improve the quality of cloth hole opening. The outer sleeve is rotatably connected to the first mounting block or the first connecting block to ensure that the lower flattening roller or the upper flattening roller can rotate. Since the inner sleeve is arranged in the outer sleeve and is fixed to the first mounting block or the first connecting block, and the wire group passes through the center hole on the first mounting block or the first connecting block and the inner sleeve, the probability of the wire group being entangled due to rotation of the lower flattening roller or the upper flattening roller is reduced.

[0012] Furthermore, a bolt which is loosely matched with the end cover is provided through the end cover, and the bolt is threadedly connected to the side wall of the shell opening side.

[0013] By adopting the above technical solution, the end cover and the shell are threadedly connected by bolts, so that the staff can disassemble the end cover and install the electric heating rod.

[0014] Furthermore, a pressure plate is commonly fixed on the side walls of the two first connecting blocks that are close to each other, and the pressure plate is located near the bottom of the first connecting block. The side walls on both sides of the pressure plate are respectively fixed to the side walls of the two second connecting blocks that are close to each other. A workbench is fixed at a position on the top of the frame corresponding to the pressure plate. The workbench is located between the two groups of traction components. The top of the workbench is flush with the top of the lower flattening roller. A positioning hole is penetrated through the pressure plate, a chip removal groove is provided at a position of the workbench corresponding to the positioning hole, and a chip removal hole is penetrated through the position of the frame corresponding to the chip removal groove.

[0015] By adopting the above technical solution, when the two first connecting blocks and the two second connecting blocks move downward, the pressing plate is also driven to move downward, and then the cloth is pressed on the workbench, so that the cloth and the workbench are kept relatively fixed when punching buttonholes, which is beneficial to improve the accuracy of punching. The positioning hole facilitates the needle of the buttonhole machine to pass through the pressing plate and then punch holes in the cloth. The chip removal groove corresponds to the position of the chip removal hole, which is beneficial to timely discharge the cloth debris generated by the buttonhole machine in the process of punching holes in the cloth.

[0016] Furthermore, a controller electrically connected to the traction motor and the drive motor is arranged on the side wall of the frame.

[0017] By adopting the above technical solution, the staff can control the operation of the first motor and the drive motor through the controller.

[0018] Furthermore, the connecting member includes a first connecting rod fixed on the first connecting block, an annular frame integrally formed with the end of the first connecting rod away from the first connecting block, and a second connecting rod fixed to the outer wall of the annular frame, and two of the first connecting rods and the second connecting rods are provided, and the two first connecting rods extend toward the side close to the axis of the positioning hole, and the two second connecting rods are respectively fixed at one end away from the first connecting rod to the side walls of the two second connecting blocks close to each other, and the axis of the annular frame coincides with the axis of the positioning hole.

[0019] By adopting the above technical solution, the driving motor drives the first connecting block to move up and down after working. Under the cooperation of the connecting piece composed of the first connecting rod, the second connecting rod and the annular frame, the two upper flattening rollers on both sides are driven to move up and down in this process, which is beneficial for the staff to synchronously control the distance between the two groups of upper flattening rollers and the two groups of lower flattening rollers to complete the traction and feeding of fabrics of different thicknesses.

[0020] Furthermore, the connecting member is a rectangular connecting frame, and the outer wall of the connecting frame is fixed to the side walls of the two first connecting blocks close to each other and the side walls of the second connecting blocks close to each other.

[0021] By adopting the above technical solution, the driving motor drives the first connecting block to move up and down after working. Under the action of the connecting frame, the two upper flattening rollers on both sides are driven to move up and down in this process, which is beneficial for the staff to synchronously control the distance between the two groups of upper flattening rollers and the two groups of lower flattening rollers to complete the traction and feeding of the cloth.

[0022] In summary, the utility model has the following beneficial effects:

[0023] 1. In the present application, when punching buttonholes on fabrics of different thicknesses, the staff raises the upper flattening roller to a certain height through the driving assembly so that the distance between the upper flattening roller and the lower flattening roller is suitable for the fabric to be punched to pass through, and then the staff passes the fabric to be punched through the two sets of traction assemblies, and then drives the upper flattening roller to reset through the driving assembly until the upper flattening roller cooperates with the lower flattening roller and presses the fabric to be punched. After the two first motors work, the output shaft ends of the two first motors drive the lower flattening roller to rotate around the rotating axis of the lower flattening roller, and then the fabric placed between the lower flattening roller and the upper flattening roller is pulled to achieve feeding, which changes the problem of the difficulty in adjusting the distance between the upper flattening roller and the lower flattening roller in the traditional design, and is conducive to buttonhole punching operations on fabrics of different thicknesses;

[0024] 2. In the present application, the staff starts the driving motor. After the driving motor starts working, it drives the driving gear, the driven gear meshing with the driving gear and the threaded rod to move. Since the threaded rod is threadedly connected to the first connecting block, the guide rod is slidably matched with the second connecting block, and the upper flattening roller is rotatably installed between the first connecting block and the second connecting block, the circumferential rotation of the upper flattening roller around the threaded rod is limited. Under the action of the connecting member, the two upper flattening rollers can move up and down during this process, so that the distance between the upper flattening roller and the lower flattening roller can be adjusted to be suitable for fabrics of different thicknesses.

[0025] 3. In the present application, since the cloth is usually prone to wrinkles due to folding when stored, the staff turns on the switch of the electric heating rod while pulling and feeding the cloth, so that the electric heating rod works and generates heat, thereby heating the inside of the shell of the upper flattening roller and the inside of the shell of the lower flattening roller. The upper flattening roller cooperates with the lower flattening roller to iron the cloth during the feeding process to eliminate wrinkles, which is beneficial for the flat-head buttonhole machine to improve the quality of cloth opening. The outer sleeve is rotatably connected to the first mounting block or the first connecting block to ensure that the lower flattening roller or the upper flattening roller can rotate. Since the inner sleeve is arranged in the outer sleeve and is fixed to the first mounting block or the first connecting block, and the wire group passes through the center hole on the first mounting block or the first connecting block and the inner sleeve, the probability of the wire group being entangled due to rotation of the lower flattening roller or the upper flattening roller is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the embodiment 1 of the utility model for highlighting the chip removal hole;

[0028] Figure 3 yes Figure 1 Another perspective of

[0029] Figure 4 This is an exploded schematic diagram of Embodiment 1 of the utility model for highlighting the electric heating rod and its connection structure;

[0030] Figure 5 This is a schematic diagram of Embodiment 1 of the present utility model for highlighting the connection structure between the outer sleeve, the inner sleeve and the first connection block;

[0031] Figure 6 It is a schematic diagram of the overall structure of Example 2 of the present utility model.

[0032] In the figure: 1, frame; 11, chip removal hole; 12, controller; 2, traction assembly; 21, first mounting block; 22, second mounting block; 23, lower flattening roller; 231, shell; 232, end cover; 233, bolt; 24, upper flattening roller; 25, first motor; 3, driving assembly; 31, driving motor; 32, driving gear; 33, threaded rod; 34; driven gear, 35, first connecting block; 351, center hole; 36, guide rod; 37, second connecting block; 4, connecting piece; 41, first connecting rod; 42, annular frame; 43, second connecting rod; 44, connecting frame; 5, terminal block; 51, electric heating rod; 52, wire group; 53, outer sleeve; 54, inner sleeve; 6, pressure plate; 61, positioning hole; 62, workbench; 621, chip removal groove. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0034] Example 1

[0035] like Figure 1-5 As shown, an embodiment of the present application discloses a feeding device for a flat-head buttonhole machine, including a frame 1, a traction assembly 2, a driving assembly 3 and a connecting member 4.

[0036] The frame 1 is arranged horizontally, and the traction assembly 2 is arranged on the frame 1 for traction of cloth movement. The traction assembly 2 is provided with two groups and is symmetrically arranged about the frame 1, and the traction assembly 2 comprises a first mounting block 21, a second mounting block 22, a lower flattening roller 23, an upper flattening roller 24 and a first motor 25. The first mounting block 21 and the second mounting block 22 are both fixed to the top of the frame 1, and the second mounting block 22 is symmetrically arranged with the first mounting block 21. The lower flattening roller 23 is rotatably mounted between the first mounting block 21 and the second mounting block 22, and the upper flattening roller 24 is arranged above the lower flattening roller 23. The lower flattening roller 23 comprises a cylindrical shell 231 with an opening at one end and an end cover 232 arranged at the open end of the shell 231, and the structure of the upper flattening roller 24 is exactly the same as that of the lower flattening roller 23. The end cover 232 is provided with a bolt 233 which is loosely matched with the end cover 232. The bolt 233 is threadedly connected to the side wall of the opening side of the housing 231, so that the staff can disassemble the end cover 232. The first motor 25 is fixed to the side wall of the second mounting block 22, and the output shaft of the first motor 25 passes through the second mounting block 22 and is fixed to the rotating shaft of the lower flattening roller 23.

[0037] The driving assembly 3 is arranged on the frame 1, and is used to drive the upper flattening roller 24 to move up and down. The driving assembly 3 includes a driving motor 31, a driving gear 32, a threaded rod 33, a driven gear 34, a first connecting block 35, a guide rod 36 and a second connecting block 37. The driving motor 31 is fixed to the bottom of the frame 1, and the driving gear 32 is fixed to the end of the output shaft of the driving motor 31. The threaded rod 33 is arranged through the bottom of the frame 1 and is rotatably connected to the frame 1. The threaded rod 33 passes through the first mounting block 21 and is clearance-matched with the first mounting block 21. The driven gear 34 is fixed to the lower end of the threaded rod 33 and meshes with the driving gear 32. The first connecting block 35 is sleeved on the threaded rod 33 and is threadedly connected to the threaded rod 33. Two first connecting blocks 35 are provided, and the threaded rod 33 and the two first connecting blocks 35 are located on the same side of the frame 1. The guide rod 36 is fixed to the second connecting block 37, and three guide rods 36 are provided. The threaded rod 33 and the three guide rods 36 are distributed in a rectangular array with respect to the frame 1. The lower ends of two guide rods 36 are respectively fixed to the tops of the two second mounting blocks 22, and the lower end of another guide rod 36 is fixed to the top of the first mounting block 21 on the same side of the threaded rod 33. The guide rod 36 on the same side of the threaded rod 33 passes through the first connecting block 35 and slides with the first connecting block 35. The second connecting block 37 is sleeved on the guide rod 36 and slides with the guide rod 36. There are two second connecting blocks 37, and the two guide rods 36 on the side away from the threaded rod 33 pass through the two second connecting blocks 37 and slide. The upper flattening roller 24 is rotatably installed between the first connecting block 35 and the second connecting block 37 and is arranged parallel to the lower flattening roller 23. The upper flattening roller 24 cooperates with the lower flattening roller 23 and presses against the cloth. The two first connecting blocks 35 and the two second connecting blocks 37 are connected by a connecting member 4.

[0038] In this embodiment, the connecting member 4 includes a first connecting rod 41, an annular frame 42 and a second connecting rod 43. The first connecting rod 41 is fixed to the side wall of one side of the first connecting block 35, the annular frame 42 is integrally formed with the end of the first connecting rod 41 away from the first connecting block 35, and one end of the second connecting rod 43 is fixed to the outer wall of the annular frame 42. There are two first connecting rods 41 and two second connecting rods 43, and the two first connecting rods 41 extend toward the side close to the axis of the positioning hole 61, and the two second connecting rods 43 are respectively fixed to the side walls of the two second connecting blocks 37 close to each other at one end away from the first connecting rod 41, and the axis of the annular frame 42 coincides with the axis of the positioning hole 61. After the driving motor 31 starts working, it drives the first connecting block 35 to move up and down. Under the cooperation of the connecting piece 4 composed of the first connecting rod 41, the second connecting rod 43 and the annular frame 42, the two upper flattening rollers 24 on both sides are driven to move up and down during this process, which is beneficial for the staff to synchronously control the distance between the two groups of upper flattening rollers 24 and the two groups of lower flattening rollers 23 to complete the traction and feeding of fabrics of different thicknesses.

[0039] In order to improve the quality of the flat buttonhole machine for opening holes in fabrics, a wiring seat 5 is detachably connected inside the housing 231, and an electric heating rod 51 is arranged on the wiring seat 5. A wire group 52 electrically connected to the electric heating rod 51 is arranged on the wiring seat 5, and the wire group 52 is electrically connected to an external power supply. The staff turns on the switch of the electric heating rod 51, so that the electric heating rod 51 works and generates heat (the lower flattening roller 23, the upper flattening roller 24 and the circular plate are all made of metal materials with a certain weight and good thermal conductivity), so as to quickly heat up the inside of the housing 231 of the upper flattening roller 24 and the inside of the housing 231 of the lower flattening roller 23, and the upper flattening roller 24 cooperates with the lower flattening roller 23 to iron the fabric during the feeding process to eliminate wrinkles. In order to ensure that the lower flattening roller 23 or the upper flattening roller 24 can rotate, the outer sleeve 53 is rotatably connected to the first mounting block 21 or the first connecting block 35. In order to reduce the probability of the wire group 52 getting tangled during the rotation of the lower flattening roller 23 or the upper flattening roller 24, an inner sleeve 54 is fixed to the side of the terminal block 5 close to the first connecting block 35 (or the first mounting block 21), and the inner sleeve 54 is arranged in the outer sleeve 53. The inner sleeve 54 is fixed to the first connecting block 35 (or the first mounting block 21), and the wire group 52 passes through the center hole 351 on the first mounting block 21 or the first connecting block 35 and the inner sleeve 54, thereby ensuring the stability of the wire group 52 during the rotation of the lower flattening roller 23 or the upper flattening roller 24.

[0040] In order to improve the accuracy of punching, a pressing plate 6 is fixed on the side walls of the two first connecting blocks 35 close to each other. The pressing plate 6 is located near the bottom of the first connecting block 35. The side walls on both sides of the pressing plate 6 are respectively fixed to the side walls of the two second connecting blocks 37 close to each other. A workbench 62 is fixed on the top of the frame 1 at a position corresponding to the pressing plate 6. The workbench 62 is located between the two groups of traction components 2, and the top of the workbench 62 is flush with the top of the lower flattening roller 23. In order to facilitate the needle of the flat-head buttonhole machine to pass through the pressing plate 6 and then punch holes in the cloth, a positioning hole 61 is opened through the pressing plate 6. In order to timely discharge the cloth debris generated by the buttonhole machine in the process of punching holes in the cloth, a chip removal groove 621 is opened at the position of the workbench 62 corresponding to the positioning hole 61, and a chip removal hole 11 is opened at the position of the frame 1 corresponding to the chip removal groove 621.

[0041] In order for the operator to control the operation of the first motor 25 and the drive motor 31 through the controller 12 , a controller 12 electrically connected to the traction motor and the drive motor 31 is provided on the side wall of the frame 1 .

[0042] The working principle of a feeding device for a flat-head buttonhole machine in the present embodiment is as follows: when punching buttonholes on fabrics of different thicknesses, the staff raises the upper flattening roller 24 to a certain height through the driving assembly 3, so that the distance between the upper flattening roller 24 and the lower flattening roller 23 is suitable for the fabric to be punched to pass through, and then the staff passes the fabric to be punched through the two sets of traction assemblies 2, and then drives the upper flattening roller 24 to reset through the driving assembly 3 until the upper flattening roller 24 cooperates with the lower flattening roller 23 and presses the fabric to be punched, and after the two first motors 25 work, the output shaft ends of the two first motors 25 drive the lower flattening roller 23 to rotate around the rotating axis of the lower flattening roller 23, and then the fabric placed between the lower flattening roller 23 and the upper flattening roller 24 is pulled to achieve feeding, which changes the problem that the distance between the upper flattening roller 24 and the lower flattening roller 23 in the traditional design is difficult to adjust, and is conducive to buttonhole punching operations on fabrics of different thicknesses. Since cloth is usually easily wrinkled due to folding when stored, the staff turns on the switch of the electric heating rod 51 while pulling the cloth to feed it, so that the electric heating rod 51 works and generates heat, thereby heating the inside of the shell 231 of the upper flattening roller 24 and the inside of the shell 231 of the lower flattening roller 23. The upper flattening roller 24 cooperates with the lower flattening roller 23 to iron the cloth during the feeding process to eliminate wrinkles, which is beneficial for the flat-head buttonhole machine to improve the quality of the cloth opening.

[0043] Example 2

[0044] like Figure 6As shown, the difference between this embodiment and embodiment 1 is that the connecting member 4 is a rectangular connecting frame 44, and the outer wall of the connecting frame 44 is fixed to the side walls of the two first connecting blocks 35 close to each other and the side walls of the second connecting blocks 37 close to each other. After the driving motor 31 is working, it drives the first connecting block 35 to move up and down. Under the action of the connecting frame 44, the two upper flattening rollers 24 on both sides are driven to move up and down during this process, which is beneficial for the staff to synchronously control the distance between the two groups of upper flattening rollers 24 and the two groups of lower flattening rollers 23 to complete the traction and feeding of the cloth.

[0045] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A feeding device for a flush buttonhole machine, comprising a frame (1), characterized in that: The frame (1) is provided with a traction assembly (2) for pulling the cloth to move. The traction assembly (2) is provided with two groups and is symmetrically arranged with respect to the frame (1). Each group of the traction assembly (2) comprises a first mounting block (21) fixed to the top of the frame (1), a second mounting block (22) fixed to the top of the frame (1) and symmetrically arranged with respect to the first mounting block (21), a lower flattening roller (23) rotatably mounted between the first mounting block (21) and the second mounting block (22), an upper flattening roller (24) arranged above the lower flattening roller (23), and a first motor (25) arranged on the side wall of the second mounting block (22). The upper flattening roller (24) cooperates with the lower flattening roller (23) and presses against the cloth. The output shaft of the first motor (25) passes through the second mounting block (22) and is fixed to the rotating shaft of the lower flattening roller (23). The frame (1) is provided with a driving assembly (3) for driving the upper flattening roller (24) to move up and down.

2. A feeding device for a flat buttonhole machine according to claim 1, characterized in that: The driving assembly (3) comprises a driving motor (31) fixed to the bottom of the frame (1), a driving gear (32) fixed to the end of the output shaft of the driving motor (31), a threaded rod (33) penetrating the bottom of the frame (1) and rotatably connected to the frame (1), a driven gear (34) fixed to the lower end of the threaded rod (33) and meshing with the driving gear (32), and a first connecting block (35) sleeved on the threaded rod (33) and threadedly connected to the threaded rod (33), the threaded rod (33) penetrating the first mounting block (21) and loosely fitting with the first mounting block (21), two first connecting blocks (35) are provided, the threaded rod (33) and the two first connecting blocks (35) are located on the same side of the frame (1), and the driving assembly (3) further comprises a guide rod (36) fixed to the second mounting block (22), three guide rods (36) are provided, and the threaded rod (33) and the three guide rods (36) are arranged in a rectangular array with respect to the frame (1). The guide rods (36) are arranged in a row, wherein the lower ends of the two guide rods (36) are respectively fixed to the tops of the two second mounting blocks (22), and the lower end of the other guide rod (36) is fixed to the top of the first mounting block (21) on the same side of the threaded rod (33). The guide rod (36) on the same side of the threaded rod (33) passes through the first connecting block (35) and is slidably matched with the first connecting block (35); the driving assembly (3) also includes a second connecting block (37) sleeved on the guide rod (36) and slidably matched with the guide rod (36), and the second connecting blocks (37) are provided with two, and the two guide rods (36) on the side away from the threaded rod (33) respectively pass through the two second connecting blocks (37) and are slidably matched, the upper flattening roller (24) is rotatably installed between the first connecting block (35) and the second connecting block (37) and is arranged parallel to the lower flattening roller (23), and the two first connecting blocks (35) and the two second connecting blocks (37) are connected by a connecting member (4).

3. A feeding device for a flat buttonhole machine according to claim 2, characterized in that: The lower flattening roller (23) comprises a cylindrical shell (231) with an opening at one end and an end cover (232) arranged at the open end of the shell (231); the structure of the upper flattening roller (24) is completely the same as that of the lower flattening roller (23); a wiring seat (5) is detachably connected inside the shell (231); an electric heating rod (51) is arranged on the wiring seat (5); a wire group (52) electrically connected to the electric heating rod (51) is arranged on the wiring seat (5); the wire group (52) is electrically connected to an external power supply; the first mounting block (21) and The first connection block (35) is provided with a central hole (351) for the wire group (52) to pass through; an outer sleeve (53) sleeved on the outside of the wire group (52) is fixed on the side of the end cover (232) away from the housing (231); the outer sleeve (53) is rotatably connected to the first installation block (21) or the first connection block (35); an inner sleeve (54) is fixed on the side of the wiring seat (5) close to the first connection block (35); the inner sleeve (54) is arranged in the outer sleeve (53) and is fixed to the first installation block (21) or the first connection block (35).

4. A feeding device for a flat buttonhole machine according to claim 3, characterized in that: The end cover (232) is provided with a bolt (233) which is loosely matched with the end cover (232), and the bolt (233) is threadedly connected to the side wall of the opening side of the housing (231).

5. A feeding device for a flat buttonhole machine according to claim 4, characterized in that: A pressure plate (6) is fixed on the mutually adjacent side walls of the two first connecting blocks (35), the pressure plate (6) is located near the bottom of the first connecting block (35), and the side walls on both sides of the pressure plate (6) are respectively fixed to the mutually adjacent side walls of the two second connecting blocks (37), a workbench (62) is fixed on the top of the frame (1) at a position corresponding to the pressure plate (6), the workbench (62) is located between the two groups of traction components (2), the top of the workbench (62) is flush with the top of the lower flattening roller (23), a positioning hole (61) is formed through the pressure plate (6), a chip removal groove (621) is formed on the workbench (62) at a position corresponding to the positioning hole (61), and a chip removal hole (11) is formed through the frame (1) at a position corresponding to the chip removal groove (621).

6. A feeding device for a flat buttonhole machine according to claim 5, characterized in that: A controller (12) electrically connected to the traction motor and the drive motor (31) is arranged on the side wall of the frame (1).

7. A feeding device for a flat buttonhole machine according to claim 6, characterized in that: The connecting member (4) comprises a first connecting rod (41) fixed on the first connecting block (35), an annular frame (42) integrally formed with one end of the first connecting rod (41) away from the first connecting block (35), and a second connecting rod (43) fixed to the outer wall of the annular frame (42), wherein two of the first connecting rod (41) and two of the second connecting rod (43) are provided, and the two first connecting rods (41) extend toward a side close to the axis of the positioning hole (61), and the two second connecting rods (43) are respectively fixed to the side walls of the two second connecting blocks (37) close to each other at one end away from the first connecting rod (41), and the axis of the annular frame (42) coincides with the axis of the positioning hole (61).

8. A feeding device for a flat buttonhole machine according to claim 6, characterized in that: The connecting member (4) is a rectangular connecting frame (44), and the outer wall of the connecting frame (44) is fixed to the side walls of the two first connecting blocks (35) close to each other and the side walls of the second connecting blocks (37) close to each other.

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