A small head clearance embroidery machine head device

Abstract

The invention discloses a small head distance embroidery machine head device, which comprises an embroidery machine head installed on an embroidery machine beam, the embroidery machine head comprises a head shell and left and right moving needle bar frames, the needle bar frames are installed with engraving hole needle bars and embroidery needle bars, the engraving hole needle bars are installed with presser feet and engraving hole needles, the up and down movement of the embroidery needle bars is controlled by needle bar driving devices inside the embroidery machine head, the presser feet and the engraving hole needles of the engraving hole needle bars are controlled by engraving hole needle driving devices outside the embroidery machine head, and the needle bar driving devices and the engraving hole needle driving devices are arranged vertically. The small head distance embroidery machine head device effectively shortens the head distance between the embroidery machine heads by vertically arranging the needle bar driving devices and the engraving hole needle driving devices inside and outside the embroidery machine head, and more embroidery machine heads can be accommodated under unit length, so that the engraving efficiency of the embroidery machine is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of embroidery machine equipment, and specifically relates to a head device for a small-head-distance embroidery machine. Background Technology

[0002] Computerized embroidery machines are machines that use embroidery thread to create patterns on fabric. Intricate patterns are formed by embroidery with different colors of thread and perforation. On most embroidery machines, embroidery and perforation are accomplished simultaneously by a main shaft driving parallel needle bar drive devices and perforation drive devices. This structural design limits the size of the horizontal embroidery machine head, thus restricting the number of machine heads per unit length. The question is how to achieve a smaller head spacing in an embroidery machine head to increase the number of machine heads per unit length.

[0003] In addition, some independently driven perforation devices generally use a perforation drive shaft to drive a swing arm to press the perforation shaft. Due to the tilting and swinging of the swing arm, the pressing force of the perforation shaft to penetrate the fabric vertically is often small, resulting in technical faults such as half-holes in the perforation. How to increase the penetration performance of the perforation is also the subject of research by those skilled in the art. Summary of the Invention

[0004] This invention provides a small-distance embroidery machine head device with a simple structure, a large number of machine heads per unit length, and strong fabric perforation penetration.

[0005] A small-pitch embroidery machine head assembly includes an embroidery machine head mounted on the main beam of the embroidery machine. The embroidery machine head includes a head housing and a needle bar frame that moves left and right. The needle bar frame is equipped with a perforation needle bar and an embroidery needle bar. The perforation needle bar is equipped with a presser foot and a perforation needle. The up-and-down movement of the embroidery needle bar is controlled by a needle bar drive device inside the embroidery machine head. The presser foot and the perforation needle of the perforation needle bar are controlled by a perforation needle drive device outside the embroidery machine head. The needle bar drive device and the perforation needle drive device are arranged vertically. The perforation needle drive device includes a drive shaft coaxial with the perforation needle bar. A guide shaft is arranged horizontally parallel to the drive shaft. The guide shaft is mounted on a perforation main shaft support seat. The drive shaft and the guide shaft are connected by a drive slider. The drive slider is connected to the perforation drive shaft through a linkage device. The perforation drive shaft is driven to rotate by a perforation motor. This type of small-head-pitch embroidery machine head assembly increases the number of machine heads per unit length by shortening the size of the transverse components inside the head by vertically positioning the needle bar drive device and the perforation needle drive device. Furthermore, the use of a drive shaft structure with the perforation needle bars on the same axis changes the driving force of the perforation needle bars from inclined to vertical, improving the penetration performance of the perforations and avoiding the technical defect of being unable to penetrate the fabric. The drive shaft with the perforation needle bars on the same axis not only outputs driving force vertically but also works in conjunction with the needle bar holder to complete the clutch engagement / disengagement mechanism.

[0006] The engraving spindle support is a flat, plate-like structure. A groove is provided on the plate-like structure corresponding to the guide shaft, and mounting holes for the guide shaft are provided on the upper and lower walls of the groove. The drive slider has a first mounting hole that mates with the guide shaft and a second mounting hole that mates with the drive shaft. Driven by a linkage device, the drive slider moves up and down along the guide shaft. A threaded hole is provided on the side of the second mounting hole for bolt-fixed connection to the drive shaft. This design improves the vertical performance of the engraving needle bar by enhancing the guiding accuracy of the guide shaft, avoiding the influence of traditional tilting drive forces.

[0007] The linkage device includes a first linkage, one end of which is connected to a drive slider, and the other end of which is connected to a second linkage. The second linkage is a three-hole linkage, with the first connecting hole connected to the first linkage via a first pin, the second connecting hole connected to a first cam linkage via a second pin, and the third connecting hole connected to the engraving spindle support via a third pin. The first cam linkage includes an eccentric cam, which is eccentrically connected to the engraving drive shaft to output driving force to the drive slider.

[0008] The engraving drive shaft is fitted with a pulley, which is connected to the engraving motor via a belt. The engraving motor is located on one side of the embroidery machine beam, and the pulley is located on the other side. The belt passes through the belt hole in the embroidery machine beam. The mounting structure on both sides of the embroidery machine beam improves the connection performance between the engraving motor and the engraving drive shaft.

[0009] The needle bar drive device includes a second cam connecting rod driven by the main shaft to rotate. The second cam connecting rod is connected to a fourth connecting rod via a fourth pin. A fifth pin and a sixth pin are connected to the left and right sides of the fourth pin, respectively. The fifth pin is also connected to the machine head housing, and the sixth pin is connected to one end of the fifth connecting rod. The other end of the fifth connecting rod is connected to the needle bar driver. The needle bar driver is sleeved on the needle bar guide shaft and simultaneously connects to a needle bar lifting rod. The needle bar lifting rod connects to the needle bar, and an embroidery needle is located at the end of the needle bar. The machine head housing is connected to a guide rail, which, in conjunction with a sliding groove, connects to the needle bar frame. The left and right movement of the needle bar frame changes the position of the embroidery needle.

[0010] The present invention relates to a small-head-distance embroidery machine head device, which effectively shortens the head-distance between embroidery machine heads by distributing the needle bar drive device and the hole-carving needle drive device vertically inside and outside the embroidery machine head. This allows for more embroidery machine heads to be accommodated per unit length, improving the hole-carving efficiency of the embroidery machine. At the same time, the use of a drive shaft structure with the hole-carving needle bars on the same axis changes the driving force of the hole-carving needle bars from inclined to vertical, improving the penetration performance of the hole-carving and avoiding the technical defect of being unable to penetrate the fabric. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings:

[0012] Figure 1 This is a three-dimensional structural diagram of the head device of the small-head-distance embroidery machine of the present invention;

[0013] Figure 2 This is a schematic diagram of the installation structure of the head assembly of the small-head-distance embroidery machine according to the present invention;

[0014] Figure 3 This is a schematic diagram of the mounting structure of the small-head-distance embroidery machine head in this invention;

[0015] Figure 4 This is a schematic diagram of the installation structure of the engraving needle driving device in this invention;

[0016] Figure 5 This is a schematic diagram of the mounting structure of the needle rod drive device in this invention. Detailed Implementation Plan

[0017] The following is in conjunction with the appendix Figure 1-5 The specific implementation method further illustrates the technical solution of this patent.

[0018] A small-pitch embroidery machine head assembly includes an embroidery machine head mounted on the main beam 2 of the embroidery machine. The embroidery machine head includes a head housing 21 and a needle bar frame 6 that moves left and right. The needle bar frame 6 is equipped with a perforated needle bar 12 and an embroidery needle bar 18. The perforated needle bar 12 is equipped with a presser foot 17 and a perforated needle 20. The up-and-down movement of the embroidery needle bar 18 is controlled by a needle bar drive device inside the embroidery machine head. The presser foot 17 and the perforated needle 20 of the perforated needle bar 12 are controlled by a perforated needle drive device outside the embroidery machine head. The needle bar drive device and the perforated needle drive device are arranged vertically. The engraving needle drive device includes a drive shaft 11 coaxial with the engraving needle rod 12. A guide shaft 34 is horizontally parallel to the drive shaft 11. The guide shaft 34 is mounted on the engraving main shaft support seat 8. The drive shaft 11 and the guide shaft 34 are connected by a drive slider 10. The drive slider 10 is connected to the engraving drive shaft 5 through a linkage device. The engraving drive shaft 5 is driven to rotate by the engraving motor 1.

[0019] As a preferred structural design, the main shaft support 8 for engraving holes is a flat, plate-like structure. The plate-like structure has a groove 32 corresponding to the guide shaft 34, and mounting holes 33 for the guide shaft 34 are provided on the upper and lower walls of the groove 32. The drive slider 10 has a first mounting hole 35 that mates with the guide shaft 34 and a second mounting hole 36 that mates with the drive shaft 11. Driven by the linkage device, the drive slider 10 moves up and down along the guide shaft 34. The second mounting hole 36 has a threaded hole on its side for bolt-fixed connection to the drive shaft 11. This design improves the guiding accuracy of the guide shaft and further enhances the vertical performance of the engraving needle bar, avoiding the influence of traditional tilting driving forces.

[0020] The preferred linkage device includes a first linkage 37, one end of which is connected to the drive slider 10, and the other end of which is connected to a second linkage 39. The second linkage 39 is a three-hole linkage. The first connecting hole connects to the first linkage 37 via a first pin 38, the second connecting hole connects to the first cam linkage 31 via a second pin 40, and the third connecting hole connects to the engraving spindle support 8 via a third pin 41. The first cam linkage 31 includes an eccentric cam, which is eccentrically connected to the engraving drive shaft 5.

[0021] To further improve the performance of the installation structure, the engraving drive shaft 5 is fitted with a pulley 9, and the pulley 9 is connected to the engraving motor 1 via a belt 3; the engraving motor 1 is located on one side of the embroidery machine beam 2, the pulley 9 is located on the other side of the embroidery machine beam 2, and the belt 3 passes through the belt hole 4 of the embroidery machine beam 2.

[0022] The preferred needle bar drive device includes a second cam link 44 driven to rotate by the main shaft 7. The second cam link 44 is connected to a fourth link 47 via a fourth pin 45. The fourth link 47 is connected to a fifth pin 46 and a sixth pin 59 on the left and right sides of the fourth pin 45, respectively. The fifth pin 46 is also connected to the machine head housing 21, and the sixth pin 59 is connected to one end of the fifth link 49. The other end of the fifth link 49 is connected to the needle bar driver 43. The needle bar driver 43 is sleeved on the needle bar guide shaft 42 and simultaneously connects to the needle bar lifting rod 48. The needle bar lifting rod 48 is connected to the needle bar 18, and the end of the needle bar 18 is equipped with an embroidery needle. The machine head housing 21 is connected to a guide rail 22, which is connected to the needle bar frame 6 via a sliding groove 23.

[0023] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A small head distance embroidery machine head device, comprising an embroidery machine head installed on an embroidery machine beam (2), the embroidery machine head comprising a head shell (21) and a left and right moving needle bar frame (6), the needle bar frame (6) is installed with a hole carving needle bar (12) and an embroidery needle bar (18), the hole carving needle bar (12) is installed with a presser foot (17) and a hole carving needle (20), characterized in that: The embroidery needle rod (18) is controlled by the needle rod driving device inside the embroidery machine head; the presser foot (17) and the hole carving needle (20) of the hole carving needle rod (12) are controlled by the hole carving needle driving device outside the embroidery machine head; the needle rod driving device and the hole carving needle driving device are arranged vertically; the hole carving needle driving device includes a driving shaft (11) on the same axis as the hole carving needle rod (12), the driving shaft (11) is horizontally parallel to the guide shaft (34), the guide shaft (34) is installed on the hole carving main shaft support seat (8), the driving shaft (11) and the guide shaft (34) are connected through the driving slider (10), the driving slider (10) is connected to the hole carving driving shaft (5) through the connecting rod device, the hole carving driving shaft (5) is driven to rotate by the hole carving motor (1). The hole carving main shaft support seat (8) is a flat plate structure, and a groove (32) is arranged on the plate structure corresponding to the guide shaft (34), and the mounting hole (33) of the guide shaft (34) is arranged on the groove wall on both sides of the groove (32).

2. A head for a small-stitch embroidery machine according to claim 1, characterized in that: The driving slider (10) is respectively provided with a first mounting hole (35) matched with the guide shaft (34) and a second mounting hole (36) matched with the driving shaft (11), the driving slider (10) moves up and down along the guide shaft (34) under the driving of the connecting rod device, and a threaded hole is arranged on the side of the second mounting hole (36) to fixedly connect the driving shaft (11) through a bolt.

3. A head for a small-stitch embroidery machine according to claim 1, characterized in that: The connecting rod device includes a first connecting rod (37), one end of the first connecting rod (37) is connected to the driving slider (10), the other end of the first connecting rod (37) is connected to a second connecting rod (39), the second connecting rod (39) is a three-hole connecting rod, a first connecting hole is connected to the first connecting rod (37) through a first pin shaft (38), a second connecting hole is connected to a first cam connecting rod (31) through a second pin shaft (40), and a third connecting hole is connected to the hole carving main shaft support seat (8) through a third pin shaft (41); the first cam connecting rod (31) includes an eccentric cam, and the eccentric cam is eccentrically connected to the hole carving driving shaft (5).

4. A head for a small-stitch embroidery machine according to claim 3, characterized in that: The hole carving driving shaft (5) is sleeved with a belt pulley (9), the belt pulley (9) is connected to the hole carving motor (1) through a belt (3); the hole carving motor (1) is located on one side of the embroidery machine beam (2), the belt pulley (9) is located on the other side of the embroidery machine beam (2), and the belt (3) penetrates through the belt hole (4) of the embroidery machine beam (2).

5. A head for a small-stitch embroidery machine according to claim 1, characterized in that: The needle rod driving device includes a second cam connecting rod (44) driven to rotate by a main shaft (7), the second cam connecting rod (44) is connected to a fourth connecting rod (47) through a fourth pin shaft (45), the fourth connecting rod (47) is connected to a fifth pin shaft (46) and a sixth pin shaft (59) on the left and right sides of the fourth pin shaft (45) respectively, the fifth pin shaft (46) is connected to the machine head shell (21) at the same time, the sixth pin shaft (59) is connected to one end of a fifth connecting rod (49) at the same time, the other end of the fifth connecting rod (49) is connected to a needle rod driver (43), the needle rod driver (43) is sleeved with a needle rod guide shaft (42) and connected to a needle rod lifting and pressing rod (48) at the same time, the needle rod lifting and pressing rod (48) is connected to the needle rod (18), and the needle rod (18) is provided with an embroidery needle at the end.

6. A head for a small-stitch embroidery machine according to claim 1, characterized in that: The machine head shell (21) is connected with a guide rail (22), the guide rail (22) is connected with a needle bar frame (6) through a sliding groove (23).

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