An embroidery machine head and an embroidery machine

Abstract

This invention discloses an embroidery machine head and embroidery machine. By providing a guide structure on the machine head housing, located on both sides of the presser foot drive block, the guide structure includes inclined guide surfaces on both sides of the presser foot drive block to guide the presser foot protrusions into the presser foot slots. The guide surface on either side gradually slopes downwards from one end near the presser foot drive block to the other end. The inclined guide surface, in conjunction with the presser foot protrusions of the presser foot rod, effectively guides the presser foot protrusions into the presser foot slots of the presser foot drive block. This allows the presser foot protrusions of the presser foot, after being idle and dropped to its normal position, to quickly and normally enter the working position, effectively improving the performance of the embroidery machine head and embroidery machine, and maintaining stable operation. Furthermore, the inclined guide surfaces significantly and effectively reduce resistance during color changing in the embroidery machine.

Description

Technical Field

[0001] This invention relates to an embroidery machine head and an embroidery machine. Background Technology

[0002] The needle bar holder of an embroidery machine head typically has one or more needle bars and corresponding presser foot bars that cooperate with the needle bar holder. The presser foot bars are equipped with presser feet. The machine head housing contains a needle bar driver for driving the needle bars and a presser foot driver for driving the presser feet. The needle bar driver includes needle bar drive blocks that move up and down, and the presser foot driver includes presser foot drive blocks that move up and down. Both the needle bar drive blocks and presser foot drive blocks have corresponding drive slots. The needle bar has a needle bar protrusion that cooperates with the needle bar drive slot on the needle bar drive block, and the presser foot has a corresponding presser foot protrusion that cooperates with the presser foot drive slot on the presser foot drive block.

[0003] When the embroidery machine is working, the needle bar frame needs to be driven to slide the needle bars according to color changes or other needs. The sliding of the needle bar frame drives the corresponding needle bars and presser foot bars into the working position and cooperates with the needle bar drive block and presser foot drive block respectively. The needle bar protrusion and presser foot protrusion cooperate with the needle bar drive block and presser foot drive block respectively. The presser foot bar corresponding to the corresponding needle bar is equipped with a return spring. The presser foot bar corresponding to an idle needle bar is usually held and stopped in the corresponding return position under the action of the return spring, so that it can quickly and accurately enter the working position as the needle bar frame slides as needed.

[0004] With continuous use of the embroidery machine, under certain unforeseen circumstances, the presser foot bar may disengage from its slot and fail to return to its original position accurately. For example, a decrease in spring force may cause the presser foot bar to fall, preventing the presser foot protrusion from maintaining its set position. Consequently, the presser foot bar may not reach the preset working position, and when sliding with the needle bar frame, the presser foot protrusion may not quickly and accurately enter, or even fail to enter, the presser foot drive slot of the presser foot drive block. During color changes, this will inevitably increase the resistance to changing needle bars on the needle bar frame and to the presser foot entering the working position, potentially affecting the operation of the presser foot and the stable operation and continued use of the embroidery machine. Summary of the Invention

[0005] This invention addresses the problem in existing embroidery machines where, after a reset period, the presser foot falls back to its normal position and the presser foot protrusion cannot quickly engage with the presser foot slot of the presser foot drive block. It provides an embroidery machine head and embroidery machine with a simple structure that effectively enables the presser foot protrusion of the presser foot rod to quickly engage with the presser foot slot of the presser foot drive block, thereby improving the working stability of the embroidery machine.

[0006] The technical solution of this invention to solve the existing problems is: an embroidery machine head, including a machine head housing, a needle bar frame mounted on the machine head housing, a needle bar drive block mounted inside the machine head housing and sliding on a guide rod, and a presser foot drive block. The needle bar frame is provided with two or more needle bars, each needle bar is provided with a presser foot rod that cooperates with the needle bar, and the presser foot rod is provided with a presser foot protrusion. The presser foot drive block is provided with a presser foot groove that cooperates with the presser foot protrusion on the presser foot rod as it slides into the working position with the needle bar frame. As an improvement, the machine head housing is provided with a guide structure, which is located on both sides of the presser foot drive block. The guide structure includes inclined guide surfaces provided on both sides of the presser foot drive block to guide the presser foot protrusion into the presser foot groove. The guide surface on any one side gradually slopes down from one end near the presser foot drive block to the other end.

[0007] As a further improvement, the guide structure is a guide block respectively disposed on both sides of the pressure foot drive block.

[0008] As a further improvement, the guide surface is provided on the upper end face of the guide block.

[0009] As a further improvement, the guide structure also includes a mounting plate on the head housing for mounting guide blocks.

[0010] As a further improvement, the guide surface is smoothly inclined from one end near the pressure foot drive block to the other end.

[0011] As a further improvement, the guide block extends outward to have a mounting portion, and the upper end surface of the mounting portion smoothly transitions with the guide surface.

[0012] An embroidery machine includes a machine body, at least one machine head mounted on the machine body, and a power input shaft. The machine head includes a machine head housing, a needle bar frame mounted on the machine head housing, a needle bar drive block mounted on the machine head housing and sliding on a guide rod, a presser foot drive block, and a presser foot drive structure for the presser foot drive block and a needle bar drive structure for the needle bar drive block. The needle bar frame has two or more needle bars, each needle bar has a presser foot bar that cooperates with the needle bar. The presser foot bar has a presser foot protrusion, and the presser foot drive block has a presser foot groove that cooperates with the presser foot protrusion on the presser foot bar when it enters the working position. As an improvement, the machine head housing has a guide structure located on both sides of the presser foot drive block. The guide structure includes inclined guide surfaces on both sides of the presser foot drive block that guide the presser foot protrusion into the presser foot groove. The guide surface on either side gradually slopes downward from one end near the presser foot drive block to the other end.

[0013] As a further improvement, the guide structure consists of guide blocks respectively disposed on both sides of the presser foot drive block; the guide surface is disposed on the upper end surface of the guide block; the guide surface is smoothly inclined and reduced from one end near the presser foot drive block to the other end.

[0014] As a further improvement, the guide structure also includes a mounting plate on the head housing for mounting guide blocks.

[0015] As a further improvement, the guide block extends outward to have a mounting portion, and the upper end surface of the mounting portion smoothly transitions with the guide surface.

[0016] Compared with existing technologies, the embroidery machine head and structure of this invention feature a guide structure on the machine head housing. This guide structure is located on both sides of the presser foot drive block and includes inclined guide surfaces on both sides of the presser foot drive block, guiding the presser foot protrusions into the presser foot slots. The guide surface on either side gradually slopes downwards from one end near the presser foot drive block to the other. The inclined guide surface, in conjunction with the presser foot protrusions of the presser foot rod, effectively guides the presser foot protrusions into the presser foot slots of the presser foot drive block. This allows the presser foot protrusions of the presser foot, after being idle and returning to their normal position, to quickly and normally enter the working position. The beneficial effect is that it effectively improves the performance of the embroidery machine head and the machine itself, maintaining stable operation. Furthermore, the inclined guide surfaces significantly and effectively reduce resistance during color changing in the embroidery machine. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 yes Figure 1 Enlarged schematic diagram at point a.

[0019] Figure 3 This is a schematic diagram of the structure of the present invention, showing the guide structure and the pressure foot block cooperating to drive the pressure foot block and the pressure foot driver slot.

[0020] Figure 4 yes Figure 3 Enlarged diagram of point b.

[0021] Figure 5 This is a schematic diagram of the guide structure of the present invention installed on the head housing. Detailed Implementation

[0022] In this implementation case, the high, low, and sides refer to the normal vertical installation of the embroidery machine head. The inner side is close to the inside of the machine head housing, and the outer side is facing away from the inside of the machine head housing.

[0023] See Figure 1-4This embodiment includes: an embroidery machine head 6, comprising a head housing 1, a needle bar frame 2 mounted on the head housing 1, a needle bar drive block mounted inside the head housing 1 and sliding on a guide rod 11, and a presser foot drive block 3, wherein the needle bar frame 2 is provided with two or more needle bars 21. Figure 1 As shown, the needle bar holder 2 is provided with multiple needle bars 21, and each needle bar 21 is provided with a presser foot bar 4 that cooperates with the needle bar 21. The presser foot bar 4 is provided with a presser foot protrusion 41 and a corresponding presser foot or / and other functional components. The presser foot drive block 3 is provided with a presser foot groove 31 that cooperates with the presser foot protrusion 41 on the presser foot bar 4 as it slides into the working position with the needle bar holder 2. The head housing 1 is provided with a guide structure, which is located on both sides of the presser foot drive block 3. The guide structure includes an inclined guide surface 5 provided on both sides of the presser foot drive block 3 to guide the presser foot protrusion 41 into the presser foot groove 31. The guide surface 5 on any one side gradually slopes down from one end near the presser foot drive block 3 to the other end, that is, the inner side of the guide surface 5 is high and the outer side is low, and the inner and outer sides can be smoothly transitioned.

[0024] The present invention also provides an embroidery machine, including a machine body, at least one head 6 mounted on the machine body, and a power input shaft, wherein the head can adopt the above-described head structure. In this embodiment, the machine head includes a machine head housing 1, a needle bar holder 2 mounted on the machine head housing 1, a needle bar drive block mounted on the machine head housing 1 and sliding on a guide rod 11, a presser foot drive block 3, and a presser foot drive structure for the presser foot drive block 3 and a needle bar 21 drive structure for the needle bar drive block. The needle bar holder 2 is provided with two or more needle bars 21, and each needle bar 21 is provided with a presser foot rod 4 that cooperates with the needle bar 21. The presser foot rod 4 is provided with a presser foot protrusion 41 and a corresponding presser foot or / and other functional components. The presser foot drive block 3 is provided with a presser foot groove 31 that cooperates with the presser foot protrusion 41 on the presser foot rod 4 when it enters the working position. The machine head housing 1 is provided with a guide structure, which is located on both sides of the presser foot drive block 3. The guide structure includes an inclined guide surface 5 provided on both sides of the presser foot drive block 3 to guide the presser foot protrusion 41 into the presser foot groove 31. The guide surface 5 on either side gradually slopes down from one end near the presser foot drive block 3 to the other end.

[0025] In this embodiment, the needle bar holder 2, the needle bar holder 2 drive structure, the needle bar 21, the presser foot bar 4, the needle bar drive block, the presser foot drive block 41, the needle bar slot, the presser foot slot 31, the needle bar drive structure, the presser foot drive structure, the power input shaft, and the working and driving methods of the needle bar and presser foot can all adopt existing technical structures. For example, the presser foot drive can be an independent drive or a drive that is synchronously linked with the needle bar.

[0026] As one option, the guide surface 5 on either side, near the end of the pressure foot drive block 3, is flush with or at the same height as the lower retaining arm 32 of the pressure foot slot 31, or close to or lower than the lower retaining arm 32 of the pressure foot slot 31. The specific design is intended to facilitate the entry of the pressure foot protrusion 41 into the pressure foot slot 31.

[0027] When the needle bar 21 needs to be replaced for color change or other reasons, the corresponding drive structure drives the needle bar frame 2 to slide. The sliding needle bar frame 2 brings the corresponding needle bar 21 and presser foot bar 4, which are preset by the system, into the work position. The needle bar protrusion on the needle bar 21 is engaged in the needle bar slot of the needle bar drive block, waiting for the needle bar drive block to drive the work. The presser foot protrusion 41 of the presser foot bar 4, which can be reset and stay in the preset normal position, can directly slide into the working position with the needle bar frame 2. The presser foot protrusion 41 of the corresponding presser foot bar 4 enters the presser foot slot 31 and works normally. Due to insufficient spring force or other unknown reasons, the presser foot lever 4, when idle and stationary, falls out of its normal preset reset position and slides with the needle bar frame 2. As it approaches the presser foot slot 31 in the working position, the presser foot protrusion 41 of the fallen presser foot lever 4 engages with the inclined guide surface 5. With the sliding of the needle bar frame 2, the inclined guide surface 5 pushes and guides the presser foot protrusion 41 into the presser foot slot 31, achieving normal operation. In this structure, the presser foot lever 4 in the normal reset position does not engage with the guide surface 5, reducing resistance during the sliding process of the needle bar frame 2. However, the presser foot protrusion 41 of the presser foot lever 4 in the normal reset position gradually engages with the inclined guide surface 5, thus also reducing resistance during the sliding process of the needle bar frame 2, effectively reducing the load on the needle bar frame drive structure.

[0028] The present invention has guide structures on both sides of the presser foot drive block 3. In this way, the needle bar frame 2 can slide back and forth, and the presser foot protrusion 41 of the presser foot bar 4 that has fallen and returned to the normal position can be guided into the presser foot slot 31 of the presser foot drive block 3 through the guide structure, so as to ensure that the presser foot bar 4 that has fallen and returned to the normal position can also work normally.

[0029] The guiding structure consists of guide blocks 50 respectively disposed on both sides of the pressure foot drive block 3. A relatively wide guide groove can be opened in the middle of the guide block 50, and the bottom surface of the guide groove can serve as a guide surface to drive the guide rod 4's guide protrusion 41 to the normal position after falling and resetting.

[0030] In this embodiment, the guide surface 5 is located on the upper surface of the guide block 50.

[0031] The guide structure also includes a mounting plate 51 on which the guide block 50 is mounted on the head housing 1. The mounting plate 51 can be configured as two pieces, respectively mounted on both sides of the head housing 1 located at the presser foot drive block 3, leaving the movable area of ​​the presser foot drive block 3 and the needle bar drive block empty. Alternatively, it can be a single piece, located bare at the presser foot drive block 3 and the needle bar drive block.

[0032] The guide surface 5 is smoothly inclined from one end to the other end near the pressure foot drive block 3, which can further reduce the resistance of the pressure foot protrusion 41 sliding on the guide surface 5.

[0033] For ease of installation, the guide block 50 extends outward with a mounting portion 52, the upper end surface of which smoothly transitions with the guide surface 5. The mounting plate 52 allows the guide block 50 to be easily mounted onto the mounting plate 51. Of course, other parts of the guide block 50 can also be used as fixing parts to be mounted on the mounting plate.

[0034] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An embroidery machine head, comprising a head housing, a needle bar frame mounted on the head housing, a needle bar drive block mounted inside the head housing and sliding on a guide rod, and a presser foot drive block, wherein the needle bar frame has two or more needle bars, each needle bar has a presser foot bar that cooperates with the needle bar, the presser foot bar has a presser foot protrusion, and the presser foot drive block has a presser foot groove that cooperates with the presser foot protrusion on the presser foot bar as it slides into the working position with the needle bar frame, characterized in that: The machine head housing is provided with a guide structure, which is located on both sides of the presser foot drive block. The guide structure includes inclined guide surfaces on both sides of the presser foot drive block that guide the presser foot protrusions into the presser foot slots. The guide surface on either side gradually slopes down from one end of the presser foot drive block to the other end.

2. The embroidery machine head as described in claim 1, characterized in that: The guide structure consists of guide blocks respectively disposed on both sides of the pressure foot drive block.

3. The embroidery machine head as described in claim 2, characterized in that: The guide surface is located on the upper end face of the guide block.

4. The embroidery machine head as described in claim 2 or 3, characterized in that: The guide structure also includes a mounting plate on the head housing for mounting guide blocks.

5. The embroidery machine head as described in claim 1 or 3, characterized in that: The guide surface is smoothly inclined from one end near the pressure foot drive block to the other end.

6. The embroidery machine head as described in claim 2 or 3, characterized in that: The guide block extends outward to have a mounting portion, and the upper end surface of the mounting portion smoothly transitions with the guide surface.

7. An embroidery machine, comprising a machine body, at least one machine head mounted on the machine body, and a power input shaft, wherein the machine head includes a machine head housing, a needle bar frame mounted on the machine head housing, a needle bar drive block mounted on the machine head housing and sliding on a guide rod, a presser foot drive block, and a presser foot drive structure for the presser foot drive block and a needle bar drive structure for the needle bar drive block; the needle bar frame is provided with two or more needle bars, each needle bar is provided with a presser foot bar that cooperates with the needle bar; the presser foot bar is provided with a presser foot protrusion; and the presser foot drive block is provided with a presser foot groove that cooperates with the presser foot protrusion on the presser foot bar when it enters the working position, characterized in that: The machine head housing is provided with a guide structure, which is located on both sides of the presser foot drive block. The guide structure includes inclined guide surfaces on both sides of the presser foot drive block that guide the presser foot protrusions into the presser foot slots. The guide surface on either side gradually slopes down from one end of the presser foot drive block to the other end.

8. The embroidery machine as described in claim 7, characterized in that: The guide structure consists of guide blocks respectively disposed on both sides of the presser foot drive block; the guide surface is disposed on the upper end surface of the guide block; the guide surface is smoothly inclined and reduced from one end near the presser foot drive block to the other end.

9. The embroidery machine as described in claim 8, characterized in that: The guide structure also includes a mounting plate on the head housing for mounting guide blocks.

10. The embroidery machine as described in claim 8 or 9, characterized in that: The guide block extends outward to have a mounting portion, and the upper end surface of the mounting portion smoothly transitions with the guide surface.

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