CN216274711U - Coiling embroidery presser foot mechanism - Google Patents

Abstract

A coiling embroidery presser foot mechanism belongs to the technical field of embroidery machines. The mechanism comprises a presser foot, a presser foot lifting motor, a guide rod, a presser foot driving fork, a presser foot slide block and a transmission structure; one end of the presser foot driving fork is connected with the presser foot sliding block, and the other end of the presser foot driving fork is connected with a presser foot sleeve for installing a presser foot; the presser foot lifting motor drives the presser foot slide block to move up and down along the guide rod through the transmission structure; the presser foot sleeve is sleeved outside the needle rod, and a fixed sleeve fixed on the machine shell is sleeved outside the presser foot sleeve; the guide rod is arranged on the machine shell and is parallel to the needle rod; the transmission structure comprises a belt, a presser foot driving wheel, a first presser foot driven wheel, a second presser foot driven wheel and a third presser foot driven wheel; the belt is sequentially wound outside the presser foot driving wheel, the first presser foot driven wheel, the second presser foot driven wheel and the third presser foot driven wheel and returns to the outside of the presser foot driving wheel to form an L-shaped tensioning ring; the first presser foot driven wheel and the second presser foot driven wheel are positioned on the inner side of the L-shaped tensioning ring, and the third presser foot driven wheel is positioned on the outer side of the L-shaped tensioning ring. The novel presser foot has the advantages of simple structure and good presser foot effect, and can meet the requirements of various presser foot heights.

Description

Coiling embroidery presser foot mechanism

Technical Field

The utility model belongs to the technical field of embroidery machines, and particularly relates to a coiling embroidery presser foot mechanism.

Background

The coiling embroidery in the computer embroidery machine is an embroidery process combining rope embroidery and strip embroidery. The existing link device comprises a motor connecting rod driven by a driving motor, a presser foot lever connected with the motor connecting rod, a presser foot driving rod connected with the presser foot lever, and a presser foot driven by the presser foot driving rod to move up and down. The connecting rod device adopts a three-connecting-rod transmission mode, the rotation angle of the presser foot lever is small in the transmission process, the mechanical property of the vertical movement of the presser foot is large and stiff, mechanical abrasion is easy to cause, and the effect of the presser foot is also influenced.

The applicant previously filed utility model patent CN202247318U discloses a belt presser foot transmission mechanism, and specifically discloses that the mechanism includes a presser foot drive block connected with the belt presser foot, a presser foot drive connecting rod with one end connected with the presser foot drive block, a presser foot lever with one end connected with the other end of the presser foot drive connecting rod, a rope embroidery connecting rod with one end connected with the other end of the presser foot lever, a motor connecting rod with one end connected with the other end of the rope embroidery connecting rod, and a drive motor connected with the other end of the motor connecting rod. The utility model discloses a still adopt link means to realize the presser foot transmission, though can increase the turned angle of presser foot lever, the mechanicalness of presser foot up-and-down motion still has a bit stiff to the structure is complicated, needs the casing to provide more spaces and is used for link means's setting and action. In addition, once the link device is assembled, the movement stroke is determined, and the height adjustment of different requirements of the presser foot cannot be adapted.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model provides the coiling embroidery presser foot mechanism which is simple in structure and soft in transmission, the movement stroke of the mechanism is adjustable, and the requirement of embroidery materials made of different materials on the height of the presser foot can be met.

The utility model is realized by the following technical scheme:

the utility model relates to a coiling embroidery presser foot mechanism, which comprises a presser foot, a presser foot lifting motor, a guide rod, a presser foot driving fork, a presser foot slide block and a transmission structure, wherein the presser foot lifting motor is arranged on the presser foot driving fork; one end of the presser foot driving fork is connected with the presser foot sliding block, and the other end of the presser foot driving fork is used for connecting a presser foot sleeve for installing a presser foot; the presser foot lifting motor drives the presser foot sliding block to move up and down along the guide rod through the transmission structure; the presser foot sleeve is sleeved outside a needle rod of the belt coiling embroidery device, a fixing sleeve is sleeved outside the presser foot sleeve, and the fixing sleeve is fixed on a casing of the belt coiling embroidery device; the guide rod is arranged on the machine shell and is parallel to the needle rod; the transmission structure comprises a belt, a presser foot driving wheel, a first presser foot driven wheel, a second presser foot driven wheel and a third presser foot driven wheel; the belt is sequentially wound outside the presser foot driving wheel, the first presser foot driven wheel, the second presser foot driven wheel and the third presser foot driven wheel and returns to the outside of the presser foot driving wheel to form an L-shaped tensioning ring; the presser foot driving wheel, the first presser foot driven wheel and the second presser foot driven wheel are positioned on the inner side of the L-shaped tensioning ring, and the third presser foot driven wheel is positioned on the outer side of the L-shaped tensioning ring.

The presser foot lifting mechanism realizes the presser foot lifting motion by utilizing the belt pulley transmission structure, has simple belt pulley transmission structure and soft mechanical transmission, reduces mechanical abrasion and has good presser foot effect. When the belt pulley transmission structure is adopted, the movement stroke of the adjustable presser foot can be adjusted, and the adjustable presser foot can meet the requirements of various presser foot heights.

Preferably, the presser foot lifting motor, the presser foot driving wheel, the first presser foot driven wheel, the second presser foot driven wheel and the third presser foot driven wheel are mounted on the side wall of the machine shell through a presser foot motor base.

The belt pulley transmission structure is simple in structure and can be compactly arranged on the shell, so that more spaces are arranged in the shell to form other structures. No matter be the action wheel or all install on the casing from the driving wheel through the presser foot motor cabinet, transmission stability is strong.

Preferably, the presser foot lifting motor is mounted on the outer side wall of the machine shell through a presser foot motor base, and the presser foot driving wheel, the first presser foot driven wheel, the second presser foot driven wheel and the third presser foot driven wheel are mounted on the inner side wall of the machine shell through the presser foot motor base.

Preferably, the second presser foot driven wheel is located above the first presser foot driven wheel, the presser foot driving wheel is located behind the first presser foot driven wheel, the first presser foot driven wheel is located at an outer corner of the L-shaped tension ring, and the third presser foot driven wheel is located at an inner corner of the L-shaped tension ring.

Preferably, the first presser foot driven wheel, the second presser foot driven wheel and the third presser foot driven wheel are all driven wheels consisting of driven wheel pins and deep groove ball bearings sleeved outside the driven wheel pins; the presser foot driving wheel is a synchronous belt wheel.

Preferably, the first presser foot driven wheel, the second presser foot driven wheel and the third presser foot driven wheel have the same radial dimension, and the radial dimensions of the first presser foot driven wheel, the second presser foot driven wheel and the third presser foot driven wheel are all smaller than the radial dimension of the presser foot drive wheel.

Preferably, the presser foot slider includes a slider main body portion and a slider connecting portion; the slider main part is equipped with the through-hole that allows the guide bar to pass through, slider connecting portion one end with the slider main part is connected, and the other end is connected with the belt clamp plate, the slider connecting portion with the space that the belt clamp plate encloses is used for the belt of centre gripping L type tension ring vertical part.

Preferably, the presser foot drive fork includes a drive main body portion and a fork attachment portion; the driving main body part is provided with a through hole allowing the guide rod to pass through, and the driving main body part is fixed at the bottom of the presser foot slide block; one end of the forking part is connected with the driving main body part, and the other end of the forking part is used for being clamped in a presser foot driving ring outside the presser foot sleeve.

Preferably, the presser foot is of a U-shaped structure with a bent lower half part, the upper part of the presser foot which is not bent is vertically arranged and connected with the presser foot sleeve, and the bent lower half part faces to the needle direction.

Preferably, the presser foot is connected with the presser foot sleeve through a presser foot mounting piece; the presser foot mounting piece is provided with a groove for accommodating the presser foot, and the presser foot is fixed in the groove of the presser foot mounting piece through a screw.

The utility model has the following beneficial effects:

the coiling embroidery presser foot mechanism is simple in structure, soft in transmission, long in mechanical service life and capable of reducing mechanical loss rate; the movement stroke is adjustable, and the requirement of embroidery materials made of different materials on the height of the presser foot can be met; the transmission structure is arranged on the side wall of the shell and can be compactly arranged on the shell, so that more space is reserved for the shell to install other structures; the driving wheel and the driven wheel in the transmission structure are both fixed on the side wall of the machine shell, the whole strength of the machine shell is high, and the transmission stability is good under the high-speed operation of the coiling embroidery device.

Drawings

Fig. 1 is a schematic perspective view of a presser foot mechanism for embroidery of a coiling belt of the present invention;

fig. 2 is a top view of the disk embroidery presser foot mechanism of the present invention, which does not include a needle bar and a presser foot;

FIG. 3 is a front view of the present invention, showing a belt embroidery presser foot mechanism mounted on a housing;

fig. 4 is a schematic structural view of a presser foot in the belt embroidery presser foot mechanism of the present invention.

The automatic presser foot mechanism comprises a machine shell 1, a cross beam 11, a needle rod 2, a presser foot 3, a presser foot lifting motor 4, a presser foot motor base 41, a presser foot sliding block 51, a through hole 511, a presser foot driving fork 52, a belt 53, a presser foot driving wheel 54, a first presser foot driven wheel 55, a second presser foot driven wheel 56, a third presser foot driven wheel 57, a guide rod 58, a presser foot sleeve A1, a presser foot driving ring 61, a driven wheel pin 62, a deep groove ball bearing 7, a belt pressing plate 8, a presser foot mounting piece 81 and a groove.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Referring to fig. 1, the disk embroidery presser mechanism of the utility model comprises a presser foot 3, a presser foot lifting motor 4, a guide rod 58, a presser foot driving fork 52, a presser foot slide block 51 and a transmission structure. One end of the presser foot driving fork 52 is connected with the presser foot slide block 51, and the other end is used for connecting a presser foot sleeve A for installing the presser foot 3 (the tail end of the presser foot sleeve A is directly or indirectly connected with the presser foot). The presser foot lifting motor 4 drives the presser foot slide block 51 to move up and down along the guide rod 58 through the transmission structure, and the presser foot slide block drives the presser foot driving fork to move up and down so as to drive the presser foot sleeve connected with the presser foot to move up and down. The presser foot sleeve A is arranged outside the needle rod 2 of the coiling embroidery device and is movably connected relative to the needle rod 2. The presser foot sleeve a is externally sleeved with a fixing sleeve (not shown in the figure), the fixing sleeve is fixed on a casing (see the casing in fig. 3) of the coiling embroidery device, for example, the bottom of the casing is provided with a hole for mounting the fixing sleeve. In fig. 3 it can be seen that the guide bar 58 and the needle bar 2 are both arranged vertically on the housing 1, parallel to each other.

As shown in fig. 1 and 2, the transmission structure includes a belt 53, a presser foot drive wheel 54, a first presser foot driven wheel 55, a second presser foot driven wheel 56, and a third presser foot driven wheel 57. The belt 53 is sequentially wound around the presser foot driving wheel 54, the first presser foot driven wheel 55, the second presser foot driven wheel 56, and the third presser foot driven wheel 57, and is returned to the outside of the presser foot driving wheel 54, and is wound to form an L-shaped tension ring. The presser foot drive wheel 54, the first presser foot driven wheel 55, and the second presser foot driven wheel 56 are located inside the L-shaped tension ring, and the third presser foot driven wheel 57 is located outside the L-shaped tension ring. The belt pulley transmission structure can form ascending and descending stroke routes on the premise of fully utilizing the space of the shell, and is convenient for controlling the lifting of the presser foot to realize the frame crossing of the presser foot when the frame moving operation is carried out.

Preferably, the first presser follower 55, the second presser follower 56, and the third presser follower 57 are all followers each composed of a follower pin 61 and a deep groove ball bearing 62 fitted around the follower pin 61. The presser foot capstan 54 is a timing pulley. The first presser foot follower 55, the second presser foot follower 56, and the third presser foot follower 57 have the same radial dimension, and the radial dimensions of the first presser foot follower 55, the second presser foot follower 56, and the third presser foot follower 57 are all smaller than the radial dimension of the presser foot drive pulley 54. The presser foot slide block can be controlled to ascend and descend by controlling the forward and reverse rotation of the presser foot lifting motor.

Specifically, the presser foot slider 51 includes a slider main body portion and a slider connecting portion. The slider main body part is provided with a through hole 511 allowing the guide rod 58 to pass through, one end of the slider connecting part is connected with the slider main body part, the other end of the slider connecting part is connected with the belt pressing plate 7 (see fig. 2), and a space enclosed by the slider connecting part and the belt pressing plate 7 is used for clamping a belt of the vertical part of the L-shaped tension ring.

Specifically, the presser foot drive fork 52 includes a drive body portion and a forked portion. The drive body portion is provided with a through hole allowing a guide bar 58 to pass through and is secured, such as by a bolt, to the bottom of the presser foot slider 51. One end of the fork joint part is connected with the driving main body part, and the other end (in an open ring shape) is used for being clamped in a presser foot driving ring A1 outside the presser foot sleeve A.

Fig. 3 shows a schematic view of a belt embroidery presser foot mechanism of the present invention mounted on a housing. The presser foot lifting motor 4, the presser foot driving wheel 54, the first presser foot driven wheel 55, the second presser foot driven wheel 56 and the third presser foot driven wheel 57 are mounted on the side wall of the machine case 1 through the presser foot motor base 41. Like this, the drive wheel of transmission structure all uses the casing lateral wall as the mounting point, and constitutes the mode of L type tension ring and arrange, and the transmission is more firm. Moreover, the longitudinal arrangement on the side wall of the shell can further save the assembly space. In order to shorten the presser foot driving distance, the presser foot lifting motor 4 is mounted on the outer side wall of the housing 1 through the presser foot motor base 41, and the presser foot driving wheel 54, the first presser foot driven wheel 55, the second presser foot driven wheel 56, and the third presser foot driven wheel 57 are mounted on the inner side wall of the housing 1 through the presser foot motor base 41. In order to improve the compactness, as shown in fig. 3, the guide bar 58 is disposed in parallel with the needle bar 2, the second presser follower 56 is located above the first presser follower 55, the presser driving wheel 54 is located behind the first presser follower 55, the first presser follower 55 is located at an outer corner of the L-shaped tension ring, and the third presser follower 57 is located at an inner corner of the L-shaped tension ring.

The utility model relates to a coiling embroidery presser foot mechanism which can be independently used in a coiling embroidery device, namely a guide rod only used for the coiling embroidery device is adopted; alternatively, a common rod with other mechanisms is used as the guide rod, for example, the common rod is used with the embroidery driving mechanism, the common rod is arranged according to the guide rod of the utility model, the tail end of the common rod is connected with the embroidery driving fork to drive the opening frame to swing, and the upper end of the common rod is connected with the embroidery driving swing. Thus, for the belt embroidery presser foot mechanism, the shared rod functions as a guide rod, and for the cord embroidery driving mechanism, the shared rod functions as a driving rod. The latter scheme does not need to occupy a large amount of installation space in the casing, so that the casing space utilization rate is high, and more structures can be compactly arranged.

In order to improve the stability of the guide rod vertically arranged in the machine shell, a cross beam 11 is arranged in the machine shell 1, and the cross beam 11 allows the needle bars 2 and the guide rod 58 to penetrate through. The beam 11 is a part of the housing 1, which can improve the structural strength.

The presser foot in the belt embroidery presser foot mechanism of the utility model can adopt the existing presser foot, such as the presser foot in the flat embroidery operation, or the presser foot shown in figure 4. As shown in fig. 4, the presser foot 3 has a U-shaped structure in which the lower half portion is bent, the upper half portion of the presser foot, which is not bent, is vertically disposed and connected to a presser foot sleeve a, and the bent lower half portion faces the needle direction. The presser foot is simple in structure, convenient to use and convenient to replace. Further, as shown in fig. 1, the presser foot 3 is connected to a presser foot sleeve a via a presser foot mounting 8. The presser foot mounting piece is provided with a groove 81 for accommodating the presser foot 3, and the presser foot 3 is fixed in the groove 81 of the presser foot mounting piece 8 through a screw. In the figure, it can be seen that the upper end part (i.e. the opened part) of the U-shape of the presser foot is clamped in the groove, the size of the screw is larger than the width of the groove, and the screw passes through the gap of the U-shape of the presser foot and then fixes the presser foot on the groove.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are given by way of example only and are not limiting of the utility model. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims (10)

1. A presser foot mechanism for coiling embroidery comprises a presser foot, a presser foot lifting motor, a guide rod, a presser foot driving fork, a presser foot slide block and a transmission structure; one end of the presser foot driving fork is connected with the presser foot sliding block, and the other end of the presser foot driving fork is used for connecting a presser foot sleeve for installing a presser foot; the presser foot lifting motor drives the presser foot sliding block to move up and down along the guide rod through the transmission structure; the presser foot sleeve is sleeved outside a needle rod of the belt coiling embroidery device, a fixing sleeve is sleeved outside the presser foot sleeve, and the fixing sleeve is fixed on a casing of the belt coiling embroidery device; the guide rod is arranged on the machine shell and is parallel to the needle rod; the device is characterized in that the transmission structure comprises a belt, a presser foot driving wheel, a first presser foot driven wheel, a second presser foot driven wheel and a third presser foot driven wheel; the belt is sequentially wound outside the presser foot driving wheel, the first presser foot driven wheel, the second presser foot driven wheel and the third presser foot driven wheel and returns to the outside of the presser foot driving wheel to form an L-shaped tensioning ring; the presser foot driving wheel, the first presser foot driven wheel and the second presser foot driven wheel are positioned on the inner side of the L-shaped tensioning ring, and the third presser foot driven wheel is positioned on the outer side of the L-shaped tensioning ring.

2. The disk embroidery presser mechanism according to claim 1, wherein the presser foot lifting motor, the presser foot driving wheel, the first presser foot driven wheel, the second presser foot driven wheel and the third presser foot driven wheel are mounted on a side wall of the housing through a presser foot motor base.

3. The presser foot mechanism for embroidery of a coil strap as claimed in claim 2, wherein the presser foot lifting motor is mounted on the outer sidewall of the housing through a presser foot motor base, and the presser foot driving wheel, the first presser foot driven wheel, the second presser foot driven wheel and the third presser foot driven wheel are mounted on the inner sidewall of the housing through the presser foot motor base.

4. The disk embroidery presser mechanism of claim 1, 2 or 3, wherein the second presser foot driven wheel is located above the first presser foot driven wheel, the presser foot drive wheel is located behind the first presser foot driven wheel, the first presser foot driven wheel is located at an outer corner of the L-shaped tension ring, and the third presser foot driven wheel is located at an inner corner of the L-shaped tension ring.

5. The disk belt embroidery presser foot mechanism according to claim 1, wherein the first presser foot driven wheel, the second presser foot driven wheel and the third presser foot driven wheel are driven wheels each composed of a driven wheel pin and a deep groove ball bearing sleeved outside the driven wheel pin; the presser foot driving wheel is a synchronous belt wheel.

6. The disk band embroidery presser foot mechanism according to claim 5, wherein the radial dimensions of the first presser foot driven wheel, the second presser foot driven wheel and the third presser foot driven wheel are equal, and the radial dimensions of the first presser foot driven wheel, the second presser foot driven wheel and the third presser foot driven wheel are all smaller than the radial dimension of the presser foot driving wheel.

7. The disk embroidery presser foot mechanism according to claim 1, wherein the presser foot slider comprises a slider main body portion and a slider connecting portion; the slider main part is equipped with the through-hole that allows the guide bar to pass through, slider connecting portion one end with the slider main part is connected, and the other end is connected with the belt clamp plate, the slider connecting portion with the space that the belt clamp plate encloses is used for the belt of centre gripping L type tension ring vertical part.

8. The disk embroidery presser foot mechanism according to claim 7, wherein the presser foot drive fork comprises a drive main body portion and a forked portion; the driving main body part is provided with a through hole allowing the guide rod to pass through, and the driving main body part is fixed at the bottom of the presser foot slide block; one end of the forking part is connected with the driving main body part, and the other end of the forking part is used for being clamped in a presser foot driving ring outside the presser foot sleeve.

9. The presser foot mechanism according to claim 1, wherein the presser foot is of a U-shaped structure with a bent lower half portion, the upper non-bent half portion of the presser foot is vertically arranged and connected with the presser foot sleeve, and the bent lower half portion faces the needle direction.

10. The coiling embroidery presser foot mechanism as claimed in claim 9, wherein said presser foot is connected to a presser foot sleeve via a presser foot mounting member; the presser foot mounting piece is provided with a groove for accommodating the presser foot, and the presser foot is fixed in the groove of the presser foot mounting piece through a screw.

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