CN211921855U

CN211921855U - Automatic pressing device of buttonhole maker

Info

Publication number: CN211921855U
Application number: CN202020328925.XU
Authority: CN
Inventors: 汪德平; 彭丽丽
Original assignee: Beijing Jintianshi Clothing Co ltd
Current assignee: Beijing Jintianshi Clothing Co ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-11-13
Anticipated expiration: 2030-03-16

Abstract

The utility model relates to an automatic compressing device of a buttonholing machine, which has the key points of the technical proposal that the automatic compressing device comprises a first cylinder, the first cylinder is arranged at the top of a machine head of the buttonholing machine, a lower pressing plate is fixedly connected with the end part of a piston rod of the first cylinder, lower pressing rods are fixedly connected with the two ends of the lower pressing plate, a lower pressing frame is arranged below the machine head, and the bottom of each lower pressing rod is fixedly connected with the lower pressing frame; the outside at push down the frame both ends is equipped with flat subassembly, flat subassembly includes the nip roll, the both ends of nip roll articulate has the connecting rod, the connecting rod deviates from the nip roll end and is articulated with push down the frame, push down all set firmly the pull ring on frame and the connecting rod, install extension spring between two pull rings, push down the frame bottom and be equipped with the pressure subassembly, the pressure subassembly includes second cylinder and compact heap, the top and the push down frame rigid coupling of second cylinder, the piston rod tip and the compact heap rigid coupling of second cylinder. The utility model has the advantages that can go on flattening and press the cloth to hold, ensure that the cloth is in the state of tightening all the time at the keyhole in-process, guarantee the product quality behind the keyhole.

Description

Automatic pressing device of buttonhole maker

Technical Field

The utility model belongs to the technical field of the buttonhole maker technique and specifically relates to an automatic closing device of buttonhole maker is related to.

Background

The buttonhole sewing machine is an important device in clothing machinery, is mainly used for processing buttonholes in various clothes and is divided into a flat buttonhole sewing machine and a round head buttonhole sewing machine, wherein the round head buttonhole sewing machine is an industrial sewing machine special for sewing and locking clothing buttonholes. The round head is characterized in that the front end of a button hole of the finger sewing lock is circular, and the shape of the button hole is attractive, and the stitches are uniform and firm.

The existing buttonhole sewing machine comprises a machine head, a machine body, a machine needle and a presser foot, when the buttonhole sewing machine works, an operator firstly places cloth below the machine head and flattens the cloth, then stirs the presser foot to press the presser foot on the cloth to prevent the cloth from moving, and finally controls the machine needle to walk to buttonhole positions.

However, in the actual working process, the cloth is often loosened due to artificial stretching or insufficient pressing force of the presser foot, so that the buttonhole is deformed, and the quality of the product after the buttonhole is affected, and therefore improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automatic closing device of button holing machine, its advantage is that can flatten the cloth and press and hold, ensures that the cloth is in the state of tightening all the time at the button holing in-process, guarantees the product quality behind the button holing.

The above technical purpose of the present invention can be achieved by the following technical solutions: an automatic pressing device of a buttonholing machine comprises a first air cylinder, wherein the first air cylinder is vertically and upwards installed at the top of a machine head of the buttonholing machine, a lower pressing plate horizontally extending towards two sides of the machine head is fixedly connected to the end part of a piston rod of the first air cylinder, lower pressing rods vertically and downwards extending are fixedly connected to two ends of the lower pressing plate, a lower pressing frame is arranged below the machine head, and the bottom of each lower pressing rod is fixedly connected with the corresponding lower pressing frame; the outer sides of two ends of the lower pressing frame are provided with flattening assemblies, each flattening assembly comprises a flattening roller, two ends of each flattening roller are hinged with connecting rods, the ends of the connecting rods, which are far away from the flattening rollers, are hinged with the lower pressing frame, pull rings are fixedly arranged on the lower pressing frame and the connecting rods, an extension spring is arranged between the two pull rings, the first air cylinder drives the two flattening rollers to simultaneously move downwards through the lower pressing frame and contact with cloth, and when the lower pressing frame is continuously driven to move downwards, the extension spring is extended, so that the two flattening rollers roll towards one side far away from each other; the bottom at the both ends of push down the frame is equipped with compresses tightly the subassembly, compress tightly the subassembly and include second cylinder and compact heap, the vertical downward setting of second cylinder, the top and the push down frame fixed connection of second cylinder, the piston rod tip and the compact heap fixed connection of second cylinder.

Through adopting above-mentioned technical scheme, push down the frame downstream through first cylinder drive, make the nip roll butt of pushing down the frame both sides on the cloth, continue to drive and push down the frame downstream, two nip rolls can roll towards one side of keeping away from each other, can be with the cloth to both sides exhibition flat with the help of the frictional force between nip roll and the cloth, then drive the briquetting downstream through the second cylinder, make that the briquetting can be stable press the cloth to hold fixedly, can prevent that the cloth from taking place lax deformation, the keyhole quality in button hole on the cloth has been improved.

The utility model discloses further set up to: the both ends of nip roll have the roller, the connecting rod deviates from and pushes down the frame end and is formed with the otic placode, has seted up the mounting hole on the otic placode, the roller rotates to be connected in the mounting hole.

Through adopting above-mentioned technical scheme, simple structure, realization nip roll that can be comparatively convenient is at the rotation between two connecting rods.

The utility model discloses further set up to: the mounting groove has been seted up to the position that corresponds the connecting rod on the lower pressure frame, the rigid coupling has the installation pole in the mounting groove, the connecting rod deviates from the flattening roller end and articulates on the installation pole.

Through adopting above-mentioned technical scheme, through the downward motion of first cylinder drive push down frame, after nip roll and cloth contact, continue to drive push down frame downward motion, the tip of connecting rod can rotate around pushing down the pole to two nip rolls of drive that can be comparatively convenient move towards keeping away from one side each other.

The utility model discloses further set up to: the lower pressure lever on one side of the machine head is fixedly connected with a limiting rod horizontally extending to the upper portion of the machine head, a limiting groove is formed in the machine head, and the projection of the end portion of the limiting rod in the vertical direction is located in the limiting groove.

Through adopting above-mentioned technical scheme, the gag lever post forms spacing to pushing down the frame after embedding into the spacing inslot, and the frame continues downstream under the restriction to prevent that the compact heap of pushing down the frame bottom directly supports to press on the cloth, cause the cloth to damage.

The utility model discloses further set up to: still the cover is equipped with the uide bushing on the depression bar of aircraft nose one side, the uide bushing is located the below of gag lever post, and its branch rigid coupling through the level setting is in on the aircraft nose.

Through adopting above-mentioned technical scheme, can prevent that the piston rod of first cylinder from taking place to rotate, ensure embedding that the gag lever post can be accurate to the spacing inslot.

The utility model discloses further set up to: and a rubber pad is fixedly arranged at the bottom of the pressing block.

Through adopting above-mentioned technical scheme, the rubber pad has cushioning effect, can prevent that the compact heap from causing the damage to the cloth at the pressure in-process of holding.

The utility model discloses further set up to: the nip roll is a rubber roll, and the outer peripheral surface of the rubber roll is provided with anti-skid lines.

Through adopting above-mentioned technical scheme, the frictional force between nip roll and the cloth can be increased in the setting of antiskid line to can be better when two nip rolls rotate relatively flatten the cloth.

To sum up, the utility model discloses a beneficial technological effect does:

1. the first cylinder drives the lower pressing frame to move downwards, so that the flattening rollers on two sides of the lower pressing frame are abutted to the cloth, the lower pressing frame is continuously driven to move downwards, the two flattening rollers can roll towards one side far away from each other, the cloth can be flattened towards two sides by means of friction force between the flattening rollers and the cloth, and finally the second cylinder drives the pressing block to move downwards, so that the pressing block can stably press and fix the cloth, the cloth can be effectively prevented from deforming due to looseness, and the quality of a lock hole is improved;

2. through being provided with the gag lever post on the dead lever, the piston rod of first cylinder is at the in-process of withdrawing, and the gag lever post can be embedded into the spacing inslot on the aircraft nose to the frame continues downstream under the restriction, in case the distance of pressing down frame downstream is too big, leads to the compact heap direct conflict of its bottom on the cloth, causes the cloth to damage.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic view showing a connection structure of the flattening assembly, the pressing assembly and the pressing frame.

Fig. 3 is a schematic view showing a connection manner of the nip roll.

Fig. 4 is a schematic view of the construction of the hold-down assembly.

In the figure, 1, a base; 2. a buttonholing machine; 21. a machine head; 3. a first cylinder; 4. a lower pressing plate; 5. a lower pressure lever; 6. pressing the frame downwards; 61. mounting grooves; 62. mounting a rod; 7. a flattening assembly; 71. flattening rollers; 711. a roll shaft; 712. anti-skid lines; 72. a connecting rod; 721. an ear plate; 722. mounting holes; 73. an extension spring; 74. a pull ring; 8. a compression assembly; 81. a second cylinder; 82. a compression block; 83. a rubber pad; 9. a limiting rod; 10. a limiting groove; 11. a guide sleeve; 12. a support rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses an automatic closing device of buttonhole maker, including base 1, 2 fixed mounting of buttonhole maker are on base 1, and fixed mounting has first cylinder 3 on the aircraft nose 21 of buttonhole maker 2, and the vertical upwards setting of first cylinder 3, the piston rod of first cylinder 3 are in the state of stretching out under initial condition, and the tip rigid coupling of piston rod has holding down plate 4, and holding down plate 4 is rectangular form, and its both ends are located aircraft nose 21 both sides respectively. The both ends of holding down plate 4 are the rigid coupling respectively and have depression bar 5, and depression bar 5 is round bar shape, and its bottom is vertical downwardly extending to aircraft nose 21 below, and the below level of aircraft nose 21 is provided with pushes down frame 6, and push down frame 6 is the rectangle frame, and the bottom and the 6 fixed connection of pushing down frame of pushing down bar 5, the piston rod of first cylinder 3 can drive pushing down frame 6 downstream through holding down plate 4, pushing down bar 5 withdrawing the in-process.

Referring to fig. 2 and 3, two sides of the lower pressing frame 6 are oppositely provided with a flattening assembly 7, the flattening assembly 7 includes a flattening roller 71, two ends of the flattening roller 71 are rotatably connected to the lower pressing frame 6 through a connecting rod 72, specifically, two ends of the flattening roller 71 are provided with a roller shaft 711, the connecting rod 72 is formed with an ear plate 721 away from the lower pressing frame 6 end, the ear plate 721 is provided with a mounting hole 722, the roller shaft 711 is rotatably connected in the mounting hole 722, the lower pressing frame 6 is provided with a mounting groove 61 corresponding to the connecting rod 72, the mounting groove 61 is horizontally and fixedly connected with a mounting rod 62, the connecting rod 72 is hinged to the mounting rod 62 away from the flattening roller 71 end, pull rings 74 are fixedly arranged at the bottom of the lower pressing frame 6 and the middle part of the connecting rod 72, a tension spring 73 is arranged between the two pull rings 74, during operation, the lower pressing frame 6 is driven by the first cylinder 3 to move downwards, so that the two flattening rollers, when continuing to drive and pushing down frame 6 downstream, extension spring 73 is elongated for two nip rolls 71 can roll towards one side of keeping away from each other on the cloth, thereby roll the in-process and drive the cloth and extend to both sides and make the cloth stretched out flatly, preferably, nip roll 71 is the rubber roller, has seted up anti-skidding line 712 on the outer peripheral face of rubber roller, can increase the frictional force between nip roll 71 and the cloth through the anti-skidding line 712 that sets up, and it is better to the exhibition flat effect of cloth.

Referring to fig. 2 and 4, further, the pressing assemblies 8 are fixedly mounted on the two side frame bottoms of the lower pressing frame 6, the pressing assemblies 8 are located on the inner side of the flattening assembly 7 and include second cylinders 81 and pressing blocks 82, the second cylinders 81 are vertically arranged downwards, the tops of the second cylinders 81 are fixedly connected with the lower pressing frame 6, the end portions of the piston rods of the second cylinders 81 are fixedly connected with the pressing blocks 82, and in an initial state, the piston rods of the second cylinders 81 are in a storage state. After the flattening roller 71 flattens the cloth, the first air cylinder 3 is controlled to stop working, at the moment, the second air cylinder 81 drives the pressing block 82 to move downwards, so that the pressing block 82 presses and fixes the cloth, and the quality of the keyhole is prevented from being affected by looseness of the cloth in the keyhole process. Preferably, the bottom of the pressing block 82 is fixedly bonded with a rubber pad 83, and the rubber pad 83 has a good buffering effect, so that the pressing block 82 can be prevented from damaging the cloth in the pressing and holding process.

Referring to fig. 1, in the process of flattening the cloth, when the distance that the first cylinder 3 drives the lower pressing frame 6 to move downwards is too large, the pressing block 82 in the pressing assembly 8 directly abuts against the cloth, so that the cloth is damaged, therefore, a limiting rod 9 is fixedly connected to the lower pressing rod 5 on one side of the machine head 21, the end part of the limiting rod 9, which deviates from the lower pressing rod 5, horizontally extends to the upper side of the machine head 21, a limiting groove 10 is formed in the top surface of the machine head 21 under the end part of the limiting rod 9, when the first cylinder 3 is in an initial state, the distance from the limiting rod 9 to the limiting groove 10 is greater than the distance from the bottom of the pressing block 82 to the base 1, when the first cylinder 3 drives the lower pressing frame 6 to move downwards, the end part of the limiting rod 9 can abut against the limiting groove 10 to limit the lower pressing frame 6 to continue to move downwards, so as to ensure that a space is left between the pressing block 82 and the cloth after the cloth is flattened by the flattening roller 71 (the piston rod of the second cylinder 81 is completely accommodated in .

Referring to fig. 1 or fig. 2, in order to prevent the piston rod of the first cylinder 3 from accidentally rotating, which results in the inaccurate abutting of the end of the limiting rod 9 in the limiting groove 10, here, the guide sleeve 11 is sleeved on the lower pressing rod 5 below the limiting rod 9, the outer wall of the guide sleeve 11 is horizontally and fixedly connected with the supporting rod 12, the end of the supporting rod 12 departing from the guide sleeve 11 is fixedly connected to the machine head 21, and in the process that the lower pressing rod 5 drives the lower pressing frame 6 to descend, the inner wall of the guide sleeve 11 can slide along the lower pressing rod 5, so as to ensure the smooth abutting of the limiting rod 9 in the limiting groove 10.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an automatic closing device of button holing machine which characterized in that: the device comprises a first cylinder (3), wherein the first cylinder (3) is vertically and upwards installed at the top of a machine head (21) of a buttonholing machine (2), a lower pressing plate (4) horizontally extending towards two sides of the machine head (21) is fixedly connected to the end part of a piston rod of the first cylinder (3), lower pressing rods (5) vertically and downwards extending are fixedly connected to two ends of the lower pressing plate (4), a lower pressing frame (6) is arranged below the machine head (21), and the bottoms of the lower pressing rods (5) are fixedly connected with the lower pressing frame (6);

the outer sides of two ends of the lower pressing frame (6) are provided with flattening assemblies (7), each flattening assembly (7) comprises a flattening roller (71), two ends of each flattening roller (71) are hinged to connecting rods (72), the ends, departing from the flattening rollers (71), of the connecting rods (72) are hinged to the lower pressing frame (6), pull rings (74) are fixedly arranged on the lower pressing frame (6) and the connecting rods (72), an extension spring (73) is installed between the two pull rings (74), the first air cylinder (3) drives the two flattening rollers (71) to simultaneously move downwards and contact with cloth through the lower pressing frame (6), and when the lower pressing frame (6) is continuously driven to move downwards, the extension springs (73) are extended, so that the two flattening rollers (71) roll towards one side far away from each other;

the bottom at the both ends of pushing down frame (6) is equipped with compresses tightly subassembly (8), compress tightly subassembly (8) including second cylinder (81) and compact heap (82), second cylinder (81) are vertical to be set up downwards, the top and the pushing down frame (6) fixed connection of second cylinder (81), the tailpiece of the piston rod portion and compact heap (82) fixed connection of second cylinder (81).

2. The automatic presser device for buttonholing machines according to claim 1, wherein: roll shaft (711) have at the both ends of nip roll (71), connecting rod (72) deviate from down to press frame (6) end to be formed with otic placode (721), have seted up mounting hole (722) on otic placode (721), roll shaft (711) rotate to be connected in mounting hole (722).

3. The automatic presser device for buttonholing machines according to claim 1, wherein: mounting groove (61) have been seted up to the position that corresponds connecting rod (72) on pushing down frame (6), the rigid coupling has installation pole (62) in mounting groove (61), connecting rod (72) deviate from nip roll (71) end and articulate on installation pole (62).

4. The automatic presser device for buttonholing machines according to claim 1, wherein: the utility model discloses a safety device for aircraft nose, including aircraft nose (21), depression bar (5) of aircraft nose one side go up the rigid coupling have the horizontal gag lever post (9) that extend to aircraft nose (21) top, have seted up spacing groove (10) on aircraft nose (21), the tip of gag lever post (9) is in the ascending projection of vertical direction falls in spacing groove (10).

5. The automatic hold-down device of a buttonholing machine of claim 4, wherein: still overlap on depression bar (5) of aircraft nose (21) one side and be equipped with uide bushing (11), uide bushing (11) are located the below of gag lever post (9), and its branch (12) rigid coupling that sets up through the level is in on aircraft nose (21).

6. The automatic presser device for buttonholing machines according to claim 1, wherein: and a rubber pad (83) is fixedly arranged at the bottom of the pressing block (82).

7. The automatic presser device for buttonholing machines according to claim 1, wherein: the flattening roller (71) is a rubber roller, and anti-skid grains (712) are arranged on the peripheral surface of the rubber roller.