An embroidery machine head with multi-color embroidery and independent hole carving function

Abstract

The present application relates to a kind of embroidery machine head with multi-color embroidering and independent engraving hole function, including head device, needle bar holder device and color changing device, needle bar holder device is fixed on color changing device, color changing device is installed and arranged on head device, head device includes machine shell, the middle and lower parts of the front side of machine shell are fixed with guide assembly, guide assembly includes vertical engraving hole guide shaft and embroidery guide shaft, the rear side of machine shell is connected with several transverse drive main shafts by bearing, drive main shaft includes engraving hole main shaft, embroidery jumper main shaft and presser foot main shaft, the right end of engraving hole main shaft is fixedly connected with engraving hole execution component, the lower end of engraving hole execution component is pivotally connected with engraving hole drive block, and engraving hole drive block is inserted on engraving hole guide shaft.This embroidery machine head has color changing and independent engraving hole function simultaneously, head can realize independent engraving hole, can carry out embroidery after engraving hole, realizes the position switching of needle bar holder using color changing component, and can realize multi-color embroidery.

Description

Technical Field

[0001] This invention relates to the technical field of embroidery machines, and more specifically to an embroidery machine head with multi-color embroidery and independent perforation functions. Background Technology

[0002] With advancements in embroidery machine technology and the expansion of its applications, techniques combining openwork and embroidery have emerged, such as piercing the fabric before embroidering. Traditional embroidery involves breaking the needle to create holes in the fabric's warp and weft threads, then changing the needle position to create the openwork effect. However, breaking the warp and weft threads easily leads to fabric wrinkles and inconsistent perforation results. Using color-changing techniques for embroidery is inefficient. As technology has progressed, embroidery machines equipped with specialized perforation tools have appeared, allowing for color-changing perforation. There are also single-needle flat embroidery machines without color-changing capabilities and single-needle independent perforation machines. The former is inefficient, while the latter has limited functionality. To achieve better perforation effects, improve efficiency, and expand the functionality of embroidery machines, it is essential to design an embroidery machine structure that integrates both color-changing and independent perforation functions. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing an embroidery machine head with multi-color embroidery and independent hole-carving functions. The embroidery machine head has both color-changing and independent hole-carving functions. The machine head can independently carve holes, and embroidery can be performed after the holes are carved. The position of the needle bar can be switched by using the color-changing component, which can realize multi-color embroidery.

[0004] An embroidery machine head with multi-color embroidery and independent hole-carving functions includes a machine head assembly, a needle bar frame assembly, and a color-changing device. The needle bar frame assembly is fixed on the color-changing device, and the color-changing device is installed on the machine head assembly. The machine head assembly includes a machine housing. Guide components are fixed in the middle and lower parts of the front side of the machine housing. The guide components include a vertical hole-carving guide shaft and an embroidery guide shaft. Several horizontal drive spindles are connected to the machine housing on the rear side of the guide components via bearings. The drive spindles include a hole-carving spindle, an embroidery skipping spindle, and a presser foot spindle. A hole-carving execution assembly is fixedly connected to the right end of the hole-carving spindle. A hole-carving drive block is pivotally connected to the lower end of the hole-carving execution assembly. The hole-carving drive block is inserted into the hole-carving guide shaft.

[0005] An embroidery execution component is fixedly connected to the left end of the embroidery thread spindle. The embroidery execution component includes an eccentric wheel fixedly inserted on the embroidery thread spindle, a connecting rod assembly connected to the eccentric wheel, and a needle bar drive block pivotally connected to the lower end of the connecting rod assembly. The needle bar drive block is inserted on the embroidery guide shaft. A linkage component is fixed to the left end of the eccentric wheel. The linkage component includes a thread take-up cam mounting plate and a thread take-up cam. The thread take-up cam mounting plate is clamped between the eccentric wheel and the thread take-up cam. The outer ring of the thread take-up cam is connected to the thread take-up assembly.

[0006] The housing has longitudinal ear plates formed on it. The thread take-up assembly includes a V-shaped thread take-up drive component, which consists of a left thread take-up drive rod and a right thread take-up drive rod. The left and right thread take-up drive rods are distributed on both sides of the ear plate and are inserted and fixed with a transverse thread take-up drive shaft. The thread take-up drive shaft is inserted into the ear plate of the housing. The front end of the right thread take-up drive rod is hinged with a thread take-up guide wheel, and the side wall of the front end of the left thread take-up drive rod is hinged with a transverse drive guide wheel by screws. The drive guide wheel abuts against the outer wall of the front side of the thread take-up cam.

[0007] The needle bar holder device includes a needle bar holder, on which several sets of vertical embroidery components and a set of vertical perforation components are connected. The embroidery components include embroidery needle bars and embroidery needles, and the perforation components include perforation knife bars and perforation knives. Embroidery connecting seats and perforation connecting seats are respectively inserted and fixed on the embroidery needle bars and perforation knife bars. The embroidery connecting seats and perforation connecting seats are respectively inserted into the needle bar drive block and the perforation drive block.

[0008] Preferably, the engraving execution component drives the engraving drive block to reciprocate up and down on the engraving guide shaft;

[0009] The engraving execution assembly includes an upper drive arm fixed to the engraving spindle, an upper pin connected to the front end of the upper drive arm via a bearing, an S-shaped lower drive arm fixed to the end of the upper pin via a sleeve, a right three-eyed connecting rod below the lower drive arm, a right pin connected to the middle of the right three-eyed connecting rod via a bearing, and the end of the right pin fixed to the lower end of the lower drive arm; a transverse three-eyed connecting rod pin is inserted into the housing, the right end of the three-eyed connecting rod pin is connected to the rear end of the right three-eyed connecting rod via a bearing and screwed with a right limit screw, a transverse right pin shaft is fixed to the front end of the right three-eyed connecting rod, a right connecting rod is sleeved to the end of the right pin shaft, and an engraving drive wheel is inserted to the end of the right connecting rod away from the right pin shaft, and the engraving drive wheel is fixed to the engraving drive block by screws.

[0010] Preferably, the embroidery execution component drives the needle bar drive block to reciprocate up and down on the embroidery guide shaft;

[0011] The embroidery execution component has a left three-eye connecting rod below the eccentric wheel. The rear end of the left three-eye connecting rod is connected to the left end of the three-eye connecting rod pin through a bearing. The left end of the three-eye connecting rod pin is screwed to fix a left limit screw. A connecting arm is formed on the outer wall of the eccentric wheel. A left pin is inserted into the end of the connecting arm. The end of the left pin is connected to the middle of the left three-eye connecting rod through a bearing. A transverse left pin is inserted to fix the front end of the left three-eye connecting rod. A left connecting rod is inserted into the end of the left pin. A positioning bolt is inserted into the end of the left connecting rod away from the left pin. The positioning bolt is screwed to fix the needle bar drive block. The front side of the needle bar drive block has an insertion port opposite to the embroidery connecting seat.

[0012] Preferably, the hole punching driving block comprises a rectangular slider, two opposite upper and lower clamping blocks are respectively formed on the front end face of the slider, and a bayonet opposite to the hole punching connecting seat is formed between the clamping blocks; both side edges of the clamping blocks are formed with rounded corners;

[0013] A shaft sleeve is inserted and sleeved on the thread take-up driving shaft, and the shaft sleeve is inserted and fixed on an ear plate of the casing.

[0014] Preferably, a presser foot driver is connected to the presser foot main shaft on the right side of the casing, the presser foot driver is composed of a presser foot execution assembly and a presser foot driving seat, the presser foot execution assembly includes a presser foot driving arm inserted and fixed on the presser foot main shaft, a transverse upper presser foot driving pin is inserted at the front end of the presser foot driving arm, a presser foot driving connecting rod is inserted and fixed at the end of the upper presser foot driving pin, the end of the presser foot driving connecting rod is pivoted on the presser foot driving seat, the presser foot driving seat is inserted and sleeved on an embroidery guide shaft at the lower side of the needle bar driving block, and a transverse connecting opening is formed on the front side of the presser foot driving seat;

[0015] The presser foot driving seat comprises a C-shaped seat body, a presser foot driving block is inserted into the seat body, a vertical sliding sleeve is inserted on the presser foot driving block, the sliding sleeve is inserted and fixed on the seat body, a torsion spring is inserted and sleeved on the sliding sleeve, the torsion spring is inserted in the presser foot driving block, one end of the torsion spring is inserted on the presser foot driving block and the other end is inserted on the seat body, a transverse lower presser foot driving pin is inserted and fixed at the rear side of the seat body, and the lower presser foot driving pin is inserted at the end of the presser foot driving connecting rod.

[0016] Preferably, a plurality of groups of embroidery presser feet matched with embroidery assemblies and a group of hole punching presser feet matched with hole punching assemblies are arranged on the needle bar frame, the embroidery presser foot comprises a presser foot connecting seat, the presser foot connecting seat is inserted and sleeved on an embroidery needle bar, and the rear end of the presser foot connecting seat is inserted into the connecting opening of the presser foot driving seat;

[0017] The hole punching presser foot comprises a presser foot rod, a cylindrical driving sleeve is inserted and fixed at the upper end of the presser foot rod, an annular presser foot piece is inserted and fixed at the lower end of the presser foot rod, the presser foot piece is located right below a hole punching knife, the driving sleeve is inserted and sleeved on a hole punching knife rod, a return spring, a linkage spring and a positioning seat are respectively inserted and sleeved on the hole punching knife rod, the positioning seat is fixed on the hole punching knife rod, one end of the linkage spring abuts against the positioning seat and the other end is inserted and sleeved against the driving sleeve, one end of the return spring abuts against the driving sleeve and the other end abuts against the needle bar frame.

[0018] Preferably, a plurality of groups of longitudinal thread jumping rods are inserted and connected on the needle bar frame above the embroidery assembly and the hole punching assembly, the rear end of the thread jumping rod is hinged on the needle bar frame through a hinged shaft, a fork opening is formed at the rear end of the thread jumping rod, and a thread take-up guide wheel is inserted into the fork opening at the rear end of the thread jumping rod.

[0019] Preferably, the needle bar holder device is provided with a perforated needle plate below it. The perforated needle plate includes a plate body, a needle plate hole is formed in the middle of the plate body, and the needle plate hole is located directly below the embroidery needle. A perforated knife hole is formed on one side of the plate body, and the perforated knife hole is located directly below the perforated knife. A circular buffer pad that is directly opposite the perforated presser foot is inserted and fixed in the perforated knife hole.

[0020] Preferably, the middle and lower parts of the front side of the machine housing are respectively formed with a middle support and a lower support, the carving guide shaft and the embroidery guide shaft are inserted between the middle support and the lower support, and the front end face of the middle support is formed with a transverse rigid rail; the color changing device includes a transverse color changing linear guide rail and a color changing pull rod, the color changing pull rod is fixed to one side of the color changing linear guide rail, and the color changing linear guide rail is sleeved on the rigid rail of the machine housing; the needle bar holder device is fixed on the front end face of the color changing linear guide rail;

[0021] The housing is formed from top to bottom with a horizontal upper shaft hole, a middle shaft hole and a lower shaft hole. The engraving spindle, the embroidery stitch spindle and the presser foot spindle are respectively inserted into the upper shaft hole, the middle shaft hole and the lower shaft hole of the housing.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. This embroidery machine head has both color changing and independent hole carving functions. The machine head can independently carve holes, and embroidery can be carried out after the holes are carved. The position of the needle bar can be switched by using the color changing component, which can realize multi-color embroidery.

[0024] 2. The independent engraving hole of this embroidery machine head can be parameterized to adjust the engraving hole depth and change the engraving hole size, and perform engraving hole embroidery in coordination with the frame movement. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention viewed from the left.

[0026] Figure 2 This is a schematic diagram of the structure of the present invention viewed from the right.

[0027] Figure 3 This is an exploded view of the present invention;

[0028] Figure 4 This is an exploded view of the head unit in this invention;

[0029] Figure 5 This is a three-dimensional structural diagram of the head unit in this invention;

[0030] Figure 6 This is a three-dimensional structural diagram of the needle rod holder device in this invention;

[0031] Figure 7 This is a front view of the needle rod holder device in this invention.

[0032] Figure 8 This is a three-dimensional structural diagram of the housing of the present invention;

[0033] Figure 9 This is a three-dimensional structural diagram of the hole-carving driving block in this invention;

[0034] Figure 10 This is an exploded view of the pressure foot drive seat in this invention.

[0035] In the diagram: 10. Head assembly; 11. Machine housing; 111. Upper shaft hole; 112. Middle shaft hole; 113. Lower shaft hole; 114. Middle support; 115. Lower support; 116. Rigid rail; 117. Ear plate; 12. Drive spindle; 121. Engraving spindle; 122. Embroidery stitch spindle; 123. Presser foot spindle; 13. Guide assembly; 131. Engraving guide shaft; 132. Embroidery... 14. Embroidery guide shaft; 14. Engraving actuator assembly; 141. Upper drive arm; 142. Lower drive arm; 143. Upper pin; 144. Right three-eyed connecting rod; 145. Engraving actuator assembly; 146. Three-eyed connecting rod pin; 147. Right limit screw; 148. Right pin shaft; 149. Right connecting rod; 15. Engraving drive block; 151. Slider; 152. Locking block 1; 1521. Rounding; 16. 161. Embroidery execution assembly; 162. Eccentric wheel; 163. Left three-eye connecting rod; 164. Left pin; 165. Left connecting rod; 166. Needle bar drive block; 17. Thread take-up assembly; 171. Left thread take-up drive rod; 172. Right thread take-up drive rod; 173. Thread take-up drive shaft; 174. Bushing; 175. Thread take-up guide wheel; 18. Linkage assembly; 181. Thread take-up cam mounting plate; 182. Thread take-up cam; 19. Presser foot driver; 191. Presser foot execution assembly; 1911. Presser foot drive arm; 1912. Upper presser foot drive pin; 1913. Presser foot drive connecting rod; 192. Presser foot drive seat; 1921. Seat body; 1922. Presser foot drive block; 1923. Sliding sleeve; 1924. Torsion spring; 1925. Lower presser foot drive pin; 1926. Nut;

[0036] 20. Needle bar holder assembly; 21. Needle bar holder; 22. Thread take-up lever; 23. Embroidery assembly; 231. Embroidery needle bar; 232. Embroidery needle; 24. Hole-carving assembly; 241. Hole-carving knife bar; 242. Hole-carving knife; 243. Return spring; 244. Linkage spring; 245. Positioning seat; 25. Embroidery presser foot; 26. Hole-carving presser foot; 261. Presser foot bar; 262. Drive sleeve; 263. Presser foot component;

[0037] 30. Color changing device; 31. Color changing linear guide rail; 32. Color changing pull rod;

[0038] 40. Engraving needle plate; 41. Plate body; 411. Needle plate hole; 412. Engraving knife hole; 42. Buffer pad. Detailed Implementation

[0039] Example: See Figures 1 to 4 As shown, an embroidery machine head with multi-color embroidery and independent hole-carving functions includes a machine head device 10, a needle bar frame device 20, and a color-changing device 30. The needle bar frame device 20 is fixed on the color-changing device 30, and the color-changing device 30 is installed on the machine head device 10. The machine head device 10 includes a machine housing 11. A guide assembly 13 is fixed on the middle and lower parts of the front side of the machine housing 11. The guide assembly 13 includes a vertical hole-carving guide shaft 131 and an embroidery guide shaft 132. Several horizontal drive spindles 12 are connected to the machine housing 11 on the rear side of the guide assembly 13 via bearings. The drive spindles 12 include a hole-carving spindle 121, an embroidery skipping spindle 122, and a presser foot spindle 123. A hole-carving execution assembly 14 is fixedly connected to the right end of the hole-carving spindle 121. A hole-carving drive block 15 is pivotally connected to the lower end of the hole-carving execution assembly 14. The hole-carving drive block 15 is inserted into the hole-carving guide shaft 131.

[0040] An embroidery execution component 16 is fixedly connected to the left end of the embroidery thread spindle 122. The embroidery execution component 16 includes an eccentric wheel 161 fixedly inserted on the embroidery thread spindle 122. A connecting rod assembly is connected to the eccentric wheel 161. A needle bar drive block 166 is pivotally connected to the lower end of the connecting rod assembly. The needle bar drive block 166 is inserted on the embroidery guide shaft 132. A linkage component 18 is fixed to the left end of the eccentric wheel 161. The linkage component 18 includes a thread take-up cam mounting plate 181 and a thread take-up cam 182. The thread take-up cam mounting plate 181 is clamped between the eccentric wheel 161 and the thread take-up cam 182. A thread take-up component 17 is connected to the outer ring of the thread take-up cam 182.

[0041] The housing 11 has a longitudinal ear plate 117 formed on it. The thread take-up assembly 17 includes a V-shaped thread take-up drive component, which consists of a left thread take-up drive rod 171 and a right thread take-up drive rod 172. The left thread take-up drive rod 171 and the right thread take-up drive rod 172 are distributed on both sides of the ear plate 117 and are inserted and fixed with a transverse thread take-up drive shaft 173. The thread take-up drive shaft 173 is inserted into the ear plate 117 of the housing 11. The front end of the right thread take-up drive rod 172 is hinged with a thread take-up guide wheel 175. The side wall of the front end of the left thread take-up drive rod 171 is hinged with a transverse drive guide wheel by screws. The drive guide wheel abuts against the outer wall of the front side of the thread take-up cam 182.

[0042] The needle bar holder device 20 includes a needle bar holder 21, on which several sets of vertical embroidery components 23 and a set of vertical perforation components 24 are connected. The embroidery components 23 include embroidery needle bars 231 and embroidery needles 232, and the perforation components 24 include perforation knife bars 241 and perforation knives 242. Embroidery connecting seats and perforation connecting seats are respectively inserted and fixed on the embroidery needle bars 231 and perforation knife bars 241. The embroidery connecting seats and perforation connecting seats are respectively inserted into the needle bar drive block 166 and the perforation drive block 15.

[0043] See Figure 2 , 4 As shown, the engraving execution component 14 drives the engraving drive block 15 to reciprocate up and down on the engraving guide shaft 131;

[0044] The engraving execution assembly 14 includes an upper drive arm 141 fixed to the engraving spindle 121, an upper pin 143 connected to the front end of the upper drive arm 141 via a bearing, an S-shaped lower drive arm 142 fixed to the end of the upper pin 143 via a sleeve, a right three-eyed connecting rod 144 located below the lower drive arm 142, a right pin 145 connected to the middle of the right three-eyed connecting rod 144 via a bearing, and the end of the right pin 145 fixed to the lower end of the lower drive arm 142. A transverse three-hole connecting rod pin 146 is inserted into the housing 11. The right end of the three-hole connecting rod pin 146 is connected to the rear end of the right three-hole connecting rod 144 via a bearing and is screwed with a right limit screw 147. A transverse right pin shaft 148 is inserted and fixed to the front end of the right three-hole connecting rod 144. A right connecting rod 149 is inserted into the end of the right pin shaft 148. A carving drive wheel is inserted into the end of the right connecting rod 149 away from the right pin shaft 148. The carving drive wheel is fixed to the carving drive block 15 by screws.

[0045] See Figure 1 , 4 As shown, the embroidery execution component 16 drives the needle bar drive block 166 to reciprocate up and down on the embroidery guide shaft 132;

[0046] Below the eccentric wheel 161 in the embroidery execution component 16, there is a left three-eye connecting rod 162. The rear end of the left three-eye connecting rod 162 is connected to the left end of the three-eye connecting rod pin 146 through a bearing. The left end of the three-eye connecting rod pin 146 is screwed to fix the left limit screw 167. A connecting arm is formed on the outer wall of the eccentric wheel 161. A left pin 163 is inserted into the end of the connecting arm. The end of the left pin 163 is connected to the middle of the left three-eye connecting rod 162 through a bearing. A transverse left pin 164 is inserted to fix the front end of the left three-eye connecting rod 162. A left connecting rod 165 is inserted into the end of the left pin 164. A positioning bolt is inserted into the end of the left connecting rod 165 away from the left pin 164. The positioning bolt is screwed to fix the needle bar drive block 166. The front side of the needle bar drive block 166 is formed with an insertion port opposite to the embroidery connecting seat.

[0047] See Figure 9 , the punching driving block 15 comprises a rectangular sliding block 151, two upper and lower opposite clamping blocks 152 are respectively formed on the front end surface of the sliding block 151, and a bay opening opposite to the punching connecting seat is formed between the clamping blocks 152; both side edges of the clamping blocks 152 are formed with rounded corners 1521;

[0048] See Figure 4 , a shaft sleeve 174 is inserted and sleeved on the thread take-up driving shaft 173, and the shaft sleeve 174 is inserted and fixed on the ear plate 117 of the casing 11.

[0049] See Figure 2 and 5 , a presser foot driver 19 is connected to the presser foot main shaft 123 on the right side of the casing 11, the presser foot driver 19 is composed of a presser foot execution assembly 191 and a presser foot driving seat 192, the presser foot execution assembly 191 comprises a presser foot driving arm 1911 inserted and fixed on the presser foot main shaft 123, a transverse upper presser foot driving pin 1912 is inserted at the front end of the presser foot driving arm 1911, a presser foot driving connecting rod 1913 is inserted and fixed at the end of the upper presser foot driving pin 1912, the end of the presser foot driving connecting rod 1913 is pivotally connected to the presser foot driving seat 192, the presser foot driving seat 192 is inserted and sleeved on the embroidery guide shaft 132 at the lower side of the needle bar driving block 166, and a transverse connecting opening is formed on the front side of the presser foot driving seat 192;

[0050] See Figure 10 , the presser foot driving seat 192 comprises a C-shaped seat body 1921, a presser foot driving block 1922 is inserted in the seat body 1921, a vertical sliding sleeve 1923 is inserted on the presser foot driving block 1922, the sliding sleeve 1923 is inserted and fixed on the seat body 1921, a torsion spring 1924 is inserted and sleeved on the sliding sleeve 1923, the torsion spring 1924 is inserted in the presser foot driving block 1922, one end of the torsion spring 1924 is inserted on the presser foot driving block 1922 and the other end is inserted on the seat body 1921, a transverse lower presser foot driving pin 1925 is inserted and fixed at the rear side of the seat body 1921, the lower presser foot driving pin 1925 is inserted at the end of the presser foot driving connecting rod 1913, one end of the lower presser foot driving pin 1925 extends out of the seat body 1921 and is screwed with a nut 1926.

[0051] See Figure 6 and 7 , the needle bar frame 21 is provided with a plurality of groups of embroidery presser feet 25 matched with embroidery assemblies 23 and a group of punching presser feet 26 matched with punching assemblies 24, the embroidery presser feet 25 comprise a presser foot connecting seat, the presser foot connecting seat is inserted and sleeved on the embroidery needle bar 231, and the rear end of the presser foot connecting seat is inserted into the connecting opening of the presser foot driving seat 192;

[0052] The engraving foot 26 includes a foot rod 261. A cylindrical drive sleeve 262 is inserted and fixed at the upper end of the foot rod 261, and an annular foot piece 263 is inserted and fixed at the lower end. The foot piece 263 is located directly below the engraving cutter 242. The drive sleeve 262 is inserted and fitted on the engraving cutter rod 241. A return spring 243, a linkage spring 244, and a positioning seat 245 are respectively inserted and fitted on the engraving cutter rod 241. The positioning seat 245 is fixed on the engraving cutter rod 241. One end of the linkage spring 244 abuts against the positioning seat 245, and the other end is inserted and abuts against the drive sleeve 262. One end of the return spring 243 abuts against the drive sleeve 262, and the other end abuts against the needle bar frame 21.

[0053] See Figure 6 , 7 As shown, several sets of longitudinal jumper rods 22 are inserted into the needle bar frame 21 above the embroidery component 23 and the hole carving component 24. The rear end of the jumper rod 22 is hinged to the needle bar frame 21 through a hinge shaft. The rear end of the jumper rod 22 is formed with a fork. The thread take-up guide wheel 175 is inserted into the fork at the rear end of the jumper rod 22.

[0054] See Figure 4 As shown, a perforated needle plate 40 is provided below the needle bar holder device 20. The perforated needle plate 40 includes a plate body 41. A needle plate hole 411 is formed in the middle of the plate body 41, and the needle plate hole 411 is located directly below the embroidery needle 232. A perforated knife hole 412 is formed on one side of the plate body 41, and the perforated knife hole 412 is located directly below the perforated knife 242. A circular buffer pad 42, which is directly opposite to the perforated presser foot 26, is inserted and fixed in the perforated knife hole 412.

[0055] See Figure 5 , 8 As shown, the middle and lower parts of the front side of the housing 11 are respectively formed with a middle support 114 and a lower support 115. The carving guide shaft 131 and the embroidery guide shaft 132 are inserted between the middle support 114 and the lower support 115. The front end face of the middle support 114 is formed with a transverse rigid rail 116. The color changing device 30 includes a transverse color changing linear guide 31 and a color changing pull rod 32. The color changing pull rod 32 is fixed to one side of the color changing linear guide 31. The color changing linear guide 31 is sleeved on the rigid rail 116 of the housing 11. The needle bar holder device 20 is fixed on the front end face of the color changing linear guide 31.

[0056] The housing 11 is formed from top to bottom with a horizontal upper shaft hole 111, a middle shaft hole 112 and a lower shaft hole 113. The engraving spindle 121, the embroidery stitch spindle 122 and the presser foot spindle 123 are respectively inserted into the upper shaft hole 111, the middle shaft hole 112 and the lower shaft hole 113 of the housing 11.

[0057] Working principle: This invention is an embroidery machine head with multi-color embroidery and independent hole carving functions. The main technical features of this embroidery machine head are reflected in three points;

[0058] The first point is that an independent engraving spindle 121 is used to independently control the up and down reciprocating motion of the engraving drive block 15 based on the cam linkage drive structure. In turn, the engraving drive block 15 drives the engraving assembly 24 to move up and down, and the engraving knife 242 on the engraving assembly 24 can engrave holes.

[0059] The second point is that the embroidery jumper spindle 122 is used to realize the movement of the thread take-up part and the embroidery part at the same time. Both of them use a cam linkage drive structure to realize the swing of the thread take-up lever 22 and the up and down reciprocating motion of the needle bar drive block 166 respectively. In this way, the needle bar drive block 166 can drive the embroidery component 23 to move up and down to realize embroidery.

[0060] The third point is that the operation of the embroidery presser foot 25 is independently controlled by the presser foot spindle 123, while the operation of the hole-carving presser foot 26 is achieved by the downward movement of the hole-carving cutter bar 241 on the hole-carving assembly 24. Based on the action of the linkage spring 244, the hole-carving presser foot 26 is driven to move downward. Therefore, the hole-carving presser foot 26 is linked with the hole-carving assembly 24. Since the hole-carving presser foot 26 moves downward with the hole-carving cutter bar 241, it cannot be controlled with the same precision as the presser foot spindle 123. Therefore, a buffer pad 42 is added to the hole-carving needle plate 40 to reduce the impact when the hole-carving presser foot 26 presses the fabric.

[0061] This embroidery machine head combines specific engraving techniques with the embroidery operation method. Figure 7 To elaborate, Figure 7 The device has three sets of embroidery components 23 and one set of hole-carving components 24. The four needle positions from right to left are numbered 1, 2, 3 and 4. In the figure, the 1st needle position is the hole-carving knife 242 and the 3rd needle position is the embroidery needle 232. The hole-carving knife 242 at the 1st needle position and the embroidery needle 232 at the 3rd needle position are connected to the hole-carving drive block 15 and the needle bar drive block 166, respectively. The hole is carved first at the 1st needle position. After the hole is carved, the embroidery can be done at the 3rd needle position.

[0062] By driving the color-changing device 30 to move, the needle bar holder device 20 can be moved. The embroidery component 23 at the 3-needle position on the needle bar holder device 20 is disengaged from the needle bar drive block 166, while the embroidery component 23 at the 2-needle position or the embroidery component 23 at the 4-needle position can be connected to the needle bar drive block 166. The needle bar drive block 166 drives the embroidery needle 232 at that position to perform embroidery. Different colors of embroidery thread are used for the 2-needle, 3-needle, and 4-needle positions, thereby achieving color changing.

[0063] Furthermore, the 2-pin position can also be equipped with a hole-carving component 24, similar to the 1-pin position, enabling independent dual-color hole-carving functions for 1-pin, 3-pin, 2-pin, and 4-pin positions respectively.

[0064] The embodiments described are illustrative of the invention and are not intended to limit the invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the invention; therefore, the scope of protection of the invention should be as set forth in the claims.

Claims

1. An embroidery machine head with multi-color embroidery and independent hole-carving functions, comprising a machine head device (10), a needle bar holder device (20), and a color-changing device (30), wherein the needle bar holder device (20) is fixed on the color-changing device (30), the color-changing device (30) is installed on the machine head device (10), the machine head device (10) comprises a machine housing (11), and a guide assembly (13) is fixed on the middle and lower parts of the front side of the machine housing (11), the guide assembly (13) comprises a vertical hole-carving guide shaft (131) and an embroidery guide shaft (132), and a plurality of horizontal drive spindles (12) are connected to the machine housing (11) on the rear side of the guide assembly (13) via bearings, characterized in that: The drive spindle (12) includes a hole-carving spindle (121), an embroidery stitch spindle (122), and a presser foot spindle (123). The right end of the hole-carving spindle (121) is fixedly connected to a hole-carving execution component (14), and the lower end of the hole-carving execution component (14) is pivotally connected to a hole-carving drive block (15). The hole-carving drive block (15) is inserted into the hole-carving guide shaft (131). The hole-carving execution component (14) drives the hole-carving drive block (15) to reciprocate up and down on the hole-carving guide shaft (131). The engraving execution assembly (14) includes an upper drive arm (141) fixed to the engraving spindle (121) via a sleeve. An upper pin (143) is connected to the front end of the upper drive arm (141) via a bearing. An S-shaped lower drive arm (142) is fixed to the end of the upper pin (143) via a sleeve. A right three-eyed connecting rod (144) is located below the lower drive arm (142). A right pin (145) is connected to the middle of the right three-eyed connecting rod (144) via a bearing. The end of the right pin (145) is inserted and fixed to the lower end of the lower drive arm (142). A transverse three-eyed connecting rod pin (146) is inserted into the housing (11). The right end of the three-eyed connecting rod pin (146) is connected to the rear end of the right three-eyed connecting rod (144) through a bearing and is screwed with a right limit screw (147). A transverse right pin shaft (148) is inserted and fixed to the front end of the right three-eyed connecting rod (144). A right connecting rod (149) is inserted into the end of the right pin shaft (148). A carving drive wheel is inserted into the end of the right connecting rod (149) away from the right pin shaft (148). The carving drive wheel is fixed to the carving drive block (15) by screws. An embroidery execution component (16) is fixedly connected to the left end of the embroidery skip thread spindle (122). The embroidery execution component (16) includes an eccentric wheel (161) fixedly inserted on the embroidery skip thread spindle (122). A connecting rod assembly is connected to the eccentric wheel (161). A needle bar drive block (166) is pivotally connected to the lower end of the connecting rod assembly. The needle bar drive block (166) is inserted on the embroidery guide shaft (132). A linkage component (18) is fixed to the left end of the eccentric wheel (161). The linkage component (18) includes a thread take-up cam mounting plate (181) and a thread take-up cam (182). The thread take-up cam mounting plate (181) is clamped between the eccentric wheel (161) and the thread take-up cam (182). A thread take-up component (17) is connected to the outer ring of the thread take-up cam (182). The housing (11) is formed with a longitudinal ear plate (117). The thread take-up assembly (17) includes a V-shaped thread take-up drive component. The thread take-up drive component consists of a left thread take-up drive rod (171) and a right thread take-up drive rod (172). The left thread take-up drive rod (171) and the right thread take-up drive rod (172) are distributed on both sides of the ear plate (117) and a transverse thread take-up drive shaft (173) is inserted and fixed. The thread take-up drive shaft (173) is inserted into the ear plate (117) of the housing (11). The front end of the right thread take-up drive rod (172) is hinged with a thread take-up guide wheel (175). The side wall of the front end of the left thread take-up drive rod (171) is hinged with a transverse drive guide wheel by screws. The drive guide wheel abuts against the outer wall of the front side of the thread take-up cam (182). The needle bar holder device (20) includes a needle bar holder (21), on which several sets of vertical embroidery components (23) and a set of vertical carving hole components are connected. The embroidery components (23) include embroidery needle bar (231) and embroidery needle (232). The carving hole components include carving hole knife bar (241) and carving hole knife (242). Embroidery connecting seat and carving hole connecting seat are respectively inserted and fixed on the embroidery needle bar (231) and carving hole knife bar (241). The embroidery connecting seat and carving hole connecting seat are respectively inserted into the needle bar drive block (166) and carving hole drive block (15).

2. The embroidery machine head with multi-color embroidery and independent perforation functions as described in claim 1, characterized in that: The embroidery execution component (16) drives the needle bar drive block (166) to reciprocate up and down on the embroidery guide shaft (132); The embroidery execution component (16) has a left three-eyed connecting rod (162) below the eccentric wheel (161). The rear end of the left three-eyed connecting rod (162) is connected to the left end of the three-eyed connecting rod pin (146) via a bearing. The left end of the three-eyed connecting rod pin (146) is screwed to fix the left limit screw (167). A connecting arm is formed on the outer wall of the eccentric wheel (161). A left pin (163) is inserted into the end of the connecting arm. The end of the left pin (163) is connected to the left pin. The bearing is connected to the middle of the left three-eye connecting rod (162). The front end of the left three-eye connecting rod (162) is fixed with a transverse left pin (164). The end of the left pin (164) is fitted with a left connecting rod (165). The end of the left connecting rod (165) away from the left pin (164) is fitted with a positioning bolt. The positioning bolt is screwed and fixed on the needle bar drive block (166). The front side of the needle bar drive block (166) has an insertion port opposite to the embroidery connecting seat.

3. The embroidery machine head with multi-color embroidery and independent perforation functions according to claim 2, characterized in that: The engraving hole driving block (15) includes a rectangular slider (151). Two upper and lower opposing locking blocks (152) are formed on the front end surface of the slider (151). A locking slot opposite to the engraving hole connecting seat is formed between the locking blocks (152). Both sides of the locking blocks (152) are rounded (1521). The thread-picking drive shaft (173) is fitted with a bushing (174), which is inserted and fixed on the ear plate (117) of the housing (11).

4. The embroidery machine head with multi-color embroidery and independent perforation functions as described in claim 1, characterized in that: A presser foot driver (19) is connected to the presser foot spindle (123) on the right side of the casing (11), the presser foot driver (19) consists of a presser foot actuator assembly (191) and a presser foot driving seat (192), the presser foot actuator assembly (191) comprises a presser foot driving arm (1911) inserted and fixed on the presser foot spindle (123), a transverse upper presser foot driving pin (1912) is inserted into the front end of the presser foot driving arm (1911), a presser foot driving link (1913) is inserted and fixed at the end of the upper presser foot driving pin (1912), the end of the presser foot driving link (1913) is pivotally connected to the presser foot driving seat (192), the presser foot driving seat (192) is inserted and sleeved on the embroidery guide shaft (132) at the lower side of the needle bar driving block (166), and a transverse connecting opening is formed on the front side of the presser foot driving seat (192); The presser foot driving seat (192) comprises a C-shaped seat body (1921), a presser foot driving block (1922) is inserted into the seat body (1921), a vertical sliding sleeve (1923) is inserted onto the presser foot driving block (1922), the sliding sleeve (1923) is inserted and fixed on the seat body (1921), a torsion spring (1924) is inserted and sleeved on the sliding sleeve (1923), the torsion spring (1924) is inserted into the presser foot driving block (1922), one end of the torsion spring (1924) is inserted onto the presser foot driving block (1922) and the other end is inserted onto the seat body (1921), a transverse lower presser foot driving pin (1925) is inserted and fixed at the rear side of the seat body (1921), and the lower presser foot driving pin (1925) is inserted into the end of the presser foot driving link (1913).

5. An embroidery machine head with multi-color embroidery and independent perforation functions as described in claim 4, characterized in that: A plurality of groups of embroidery presser feet (25) matched with the embroidery assemblies (23) and a group of holing presser feet (26) matched with the holing assembly are arranged on the needle bar frame (21), the embroidery presser foot (25) comprises a presser foot connecting seat, the presser foot connecting seat is inserted and sleeved on the embroidery needle bar (231), and the rear end of the presser foot connecting seat is inserted into the connecting opening of the presser foot driving seat (192); The holing presser foot (26) comprises a presser foot bar (261), a cylindrical driving sleeve (262) is inserted and fixed at the upper end of the presser foot bar (261), an annular presser foot member (263) is inserted and fixed at the lower end of the presser foot bar (261), the presser foot member (263) is located directly below the holing knife (242), the driving sleeve (262) is inserted and sleeved on the holing knife bar (241), a return spring (243), a linkage spring (244) and a positioning seat (245) are respectively inserted and sleeved on the holing knife bar (241), the positioning seat (245) is fixed on the holing knife bar (241), one end of the linkage spring (244) abuts against the positioning seat (245) and the other end is inserted and sleeved on and abuts against the driving sleeve (262), one end of the return spring (243) abuts against the driving sleeve (262) and the other end abuts against the needle bar frame (21).

6. The embroidery machine head with multi-color embroidery and independent perforation functions according to claim 1, characterized in that: Several sets of longitudinal jumper rods (22) are inserted into the needle bar frame (21) above the embroidery component (23) and the hole carving component. The rear end of the jumper rod (22) is hinged to the needle bar frame (21) through a hinge shaft. The rear end of the jumper rod (22) is formed with a fork. The thread take-up guide wheel (175) is inserted into the fork at the rear end of the jumper rod (22).

7. The embroidery machine head with multi-color embroidery and independent perforation functions according to claim 1, characterized in that: The needle bar holder device (20) is provided with a perforated needle plate (40) below it. The perforated needle plate (40) includes a plate body (41). A needle plate hole (411) is formed in the middle of the plate body (41). The needle plate hole (411) is located directly below the embroidery needle (232). A perforated knife hole (412) is formed on one side of the plate body (41). The perforated knife hole (412) is located directly below the perforated knife (242). A circular buffer pad (42) is inserted and fixed in the perforated knife hole (412) and is directly opposite to the perforated press foot (26).

8. The embroidery machine head with multi-color embroidery and independent perforation functions according to claim 1, characterized in that: The middle and lower parts of the front side of the housing (11) are respectively formed with a middle support (114) and a lower support (115). The carving guide shaft (131) and the embroidery guide shaft (132) are inserted between the middle support (114) and the lower support (115). The front end face of the middle support (114) is formed with a transverse rigid rail (116). The color changing device (30) includes a transverse color changing linear guide rail (31) and a color changing pull rod (32). The color changing pull rod (32) is fixed on one side of the color changing linear guide rail (31). The color changing linear guide rail (31) is sleeved on the rigid rail (116) of the housing (11). The needle bar frame device (20) is fixed on the front end face of the color changing linear guide rail (31). The housing (11) is formed from top to bottom with a horizontal upper shaft hole (111), a middle shaft hole (112) and a lower shaft hole (113). The engraving spindle (121), the embroidery thread spindle (122) and the presser foot spindle (123) are respectively inserted into the upper shaft hole (111), the middle shaft hole (112) and the lower shaft hole (113) of the housing (11).

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