Round-head embroidery machine

Abstract

A round head embroidery machine comprises a machine frame and a machine head arranged on the machine frame, the machine head comprises a main body part, a shell, a top cover and a control device, the top cover is arranged above the shell in a covering mode, a containing space is defined by the top cover and the shell, the main body part is arranged in the containing space, and the control device is arranged above the top cover; the main body part comprises a mounting frame, and a color changing frame, an embroidery needle device, a presser foot device and a driving device which are arranged on the mounting frame; the embroidering needle device and the presser foot device are arranged on the color changing frame, the embroidering needle device comprises a plurality of embroidering needle assemblies, and each embroidering needle assembly comprises a needle rod and an embroidering needle detachably arranged at the bottom end of the needle rod; the presser foot device comprises a plurality of presser foot assemblies, and each presser foot assembly comprises a presser foot rod and a bottom foot arranged at the bottom end of the presser foot rod. Due to the design of the detachable structure, the convenience of part replacement is improved, the maintenance cost is reduced, the practicability is high, and the popularization significance is high.

Description

Technical Field

[0001] The utility model relates to the technical field of embroidery machines, in particular to a round-head embroidery machine. Background Art

[0002] Computer embroidery machine, also known as embroidery machine, is the most advanced embroidery machine in the contemporary era. It can realize the high speed and high efficiency of traditional manual embroidery, and can also realize the requirements of multi-level, multi-function, uniformity and perfection that manual embroidery cannot achieve. The existing round head embroidery machine can not only embroider automatically but also realize automatic color change. The embroidery machine is provided with multiple auxiliary presser feet, which can always keep the cloth pressing state in the direction of sewing, and the cloth pressing area is large, so as to effectively ensure that the cloth is in a flat state within the sewing range. When the thickness of the fabric to be embroidered is different, in order to make the presser foot better cooperate with the embroidery, it is usually necessary to replace different types of presser feet when embroidering fabrics of different thicknesses. However, since the outer shell is provided on the outer side of the presser foot on the embroidery machine for shielding, when replacing the presser foot, the traditional embroidery machine structure needs to remove the outer shell installed on the outer side of the presser foot on the head of the machine to replace the presser foot; the replacement operation steps are relatively complicated. In addition, the installation limit structure of the traditional embroidery needle bar and the presser foot bar is mostly a fixed structure of welding or injection molding, which is not convenient for the replacement and maintenance of parts. Utility Model Content

[0003] Therefore, the purpose of the utility model is to provide a round-head embroidery machine to solve the problem of inconvenient presser foot replacement.

[0004] In order to achieve the above purpose, the utility model mainly adopts the following technical solutions:

[0005] A round-head embroidery machine, comprising a frame and a machine head mounted on the frame, the machine head comprising a main body, an outer shell, a top cover and a control device, the top cover being arranged above the outer shell, the top cover and the outer shell enclosing a containing space, the main body being arranged in the containing space, and the control device being arranged above the top cover; the main body comprising a mounting frame and a color-changing frame, an embroidery needle device, a presser foot device and a driving device mounted on the mounting frame; the embroidery needle device and the presser foot device are both arranged on the color-changing frame, the embroidery needle device comprising a plurality of embroidery needle assemblies, the embroidery needle assembly comprising a needle bar and an embroidery needle detachably mounted at the bottom end of the needle bar; the presser foot device comprising a plurality of presser foot assemblies, the presser foot assembly comprising a presser foot bar and a bottom foot mounted at the bottom end of the presser foot bar, the needle bar and the presser foot bar being arranged in a one-to-one correspondence, and a top stopper and a middle stopper are arranged between the same group of needle bars and the presser foot bar The mounting piece, the middle mounting piece is movably mounted on the needle bar, and the presser foot rod is fixedly mounted on the middle mounting piece; a first telescopic spring is arranged between the top limiting piece on the needle bar and the middle mounting piece, and a second telescopic spring is arranged between the presser foot rod and the middle mounting piece and the color changing frame; a needle bar limiting hole is arranged on the bottom surface of the top limiting piece, a pressure rod limiting groove is arranged on the outer surface, and a side groove is arranged on the inner surface, the top end of the needle bar is embedded in the needle bar limiting hole, and the top end of the presser foot rod extends into the pressure rod limiting groove, a pressing block is arranged on the driving device, and the pressing block extends into the side groove, and the pressing block pushes the needle bar and the presser foot rod to move downward; a mounting part is arranged on the bottom foot, the bottom ends of the needle bar and the presser foot rod are penetrated in the mounting part, and the presser foot rod is provided with an upper limit part and a lower limit part on the mounting part, and the lower limit part is a limiting nut.

[0006] Furthermore, the mounting portion is provided with a coaxial large-diameter upper assembly hole and a small-diameter lower assembly hole, and the bottom of the presser foot rod is provided with a threaded assembly shaft, an upper limit portion is formed between the assembly shaft and the bottom end surface of the presser foot rod, the assembly shaft is installed in the lower assembly hole and extends out of the bottom surface of the mounting portion, and the limit nut is threadedly connected to the assembly shaft on the outside of the bottom surface of the mounting portion.

[0007] Furthermore, it also includes a limiting assembly, a slot is provided on the mounting portion of the base foot, the bottom ends of the needle bar and the presser foot rod are both inserted into the slot, and the presser foot rod is arranged on the outside of the needle bar, and the limiting assembly is installed on the presser foot rod and the mounting portion.

[0008] Furthermore, the limit assembly includes an upper limit plate, a lower limit plate, a limit sleeve and a limit nut. The limit sleeve is passed through the upper limit plate, the slot, the lower limit plate from top to bottom and extends out of the bottom surface of the lower limit plate. The presser foot rod is passed through the limit sleeve, and the limit nut is threaded on the bottom outer surface of the limit sleeve.

[0009] Furthermore, the upper limit plate and the lower limit plate are provided with limit slots on the surface of one side of the needle bar; the needle bar is accommodated between the limit slots.

[0010] Furthermore, a limiting flange is arranged on the top of the limiting sleeve, an external thread is arranged on the outer surface below the limiting flange, an adjustment groove is arranged on the outer surface of the limiting sleeve, and the bottom end of the limiting sleeve is arranged with an outer diameter gradually increasing upwards.

[0011] Furthermore, the limiting flange of the limiting sleeve is integrally formed with the upper limiting plate, and other installation areas except the limiting flange extend outwardly from the bottom surface of the upper limiting plate.

[0012] Furthermore, a mounting rod is provided on the mounting frame, the middle part of the color-changing frame is mounted on the mounting rod, and the color-changing frame can rotate along the mounting rod.

[0013] Furthermore, an upper plate and a lower plate are provided on the front side of the color changing frame, and a needle bar mounting hole group and a pressure rod mounting groove group are provided on the upper plate and the lower plate. The embroidery needle device is inserted into the needle bar mounting hole group, and the presser foot device is inserted into the pressure rod mounting groove group.

[0014] Furthermore, the needle bar mounting hole group includes a plurality of needle bar mounting holes arranged in an arc shape, the needle bar is inserted into the corresponding needle bar mounting holes, the pressure rod mounting groove group includes a plurality of pressure rod mounting grooves arranged in an arc shape, and the presser foot is inserted into the pressure rod mounting groove.

[0015] In summary, the utility model provides a detachable foot, so that when replacing the foot, the foot can be replaced without removing the shell. And the design of the upper and lower limit plate structure can not only limit the presser foot rod and the foot, but also be applicable to a variety of foot sizes and thicknesses, with high flexibility. In addition, the embroidery needle device and the presser foot device are both arranged with a detachable component structure, which is convenient for component replacement and maintenance. If any small component is abnormal, only the small component needs to be replaced; thereby reducing maintenance costs. The utility model is highly practical and has a strong promotional significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the first embodiment of the round-head embroidery machine head of the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the side structure of the nose, with part of the outer shell not shown;

[0018] Figure 3 for Figure 2 A schematic diagram of the structure of part of the main body;

[0019] Figure 4 for Figure 3 Schematic diagram of the installation structure of the middle embroidery needle assembly and the presser foot assembly;

[0020] Figure 5 for Figure 4 A cross-sectional diagram of the installation structure of the midsole foot and the presser foot rod;

[0021] Figure 6 It is a partial structural schematic diagram of the second embodiment of the embroidery machine head of the utility model;

[0022] Figure 7 for Figure 6 Schematic diagram of the partial installation structure of the middle embroidery needle assembly and the presser foot assembly;

[0023] Figure 8 for Figure 7 The exploded schematic diagram in FIG. 1 shows a presser foot bar and an embroidery needle assembly not shown;

[0024] Fig. 9 for Figure 8 A cross-sectional diagram of the installation structure of the midsole foot and the presser foot rod;

[0025] Fig.10 for Figure 8 Another implementation structure in . DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] like Figures 1 to 5 As shown, the utility model provides a first embodiment of a round-head embroidery machine, the round-head embroidery machine includes a frame (not shown) and a head 100 mounted on the frame, the head 100 includes a main body 10, a shell 20, a top cover 30 and a control device 40, the top cover 30 is covered on the shell 20, the top cover 30 and the shell 20 are enclosed to form a accommodating space, the main body 10 is arranged in the accommodating space, and the control device 40 is arranged above the top cover 30.

[0028] The main body 10 includes a mounting frame 11 and a color-changing frame 12 mounted on the mounting frame 11, an embroidery needle device 14, a presser foot device 15, and a driving device. A mounting rod 111 is provided on the mounting frame 11, and the middle part of the color-changing frame 12 is mounted on the mounting rod 111, and the color-changing frame 12 can rotate along the mounting rod 111. In this embodiment, an upper plate and a lower plate are provided on the front side of the color-changing frame 12, and a needle bar mounting hole group and a pressure bar mounting groove group are provided on the upper plate and the lower plate. The needle bar mounting hole group includes a plurality of needle bar mounting holes 121 arranged in an arc shape, and the pressure bar mounting groove group includes a plurality of pressure bar mounting grooves 122 arranged in an arc shape.

[0029] The embroidery needle device 14 includes a plurality of embroidery needle assemblies, and the embroidery needle assemblies include a needle bar 141 and an embroidery needle 142 detachably mounted at the bottom end of the needle bar 141. The presser foot device 15 includes a plurality of presser foot assemblies, and the presser foot assemblies include a presser foot rod 151 and a foot 152 mounted at the bottom end of the presser foot rod 151. The needle bar 141 is inserted into the needle bar mounting hole 121, and the presser foot rod 151 is inserted into the presser bar mounting groove 122. In addition, a top stopper 50 and a middle mounting member 60 are also arranged between the needle bar 141 and the presser foot rod 151. The top stopper 50 is provided with a side groove 51 on the inner side surface, a needle bar stopper hole (not shown) is provided on the bottom surface, and a presser bar stopper groove 52 is provided on the outer side surface. The top end of the needle bar 141 is embedded in the needle bar stopper hole, and the top end of the presser foot rod 151 extends into the presser bar stopper groove 52. In this embodiment, the top limiting member 50 and the middle mounting member 60 are both made of plastic material and are both detachably mounted.

[0030] The middle mounting member 60 is provided with a first mounting hole 61 and a second mounting hole 62, the needle rod 141 is movably inserted into the first mounting hole 61, and the presser foot rod 151 is fixedly inserted into the second mounting hole 62; in this embodiment, the presser foot rod 151 is locked in the second mounting hole 62 by bolts arranged on the side, and when it needs to be disassembled, the bolts can be loosened; this limiting structure is a conventional setting. In addition, the needle rod 141 and the presser foot rod 151 are also provided with scale marks to facilitate the installation and calibration of the middle mounting member 60. The needle rod 141 is provided with a first compression spring 71, and the presser foot rod 151 is provided with a second compression spring 72. The first compression spring 71 is located between the middle mounting member 60 and the top limiting member 50, and the second compression spring 72 is arranged between the middle mounting member 60 and the color changing frame 12. The driving device is provided with a pressing block 13 , which is mounted on the mounting rod 111 , and the outer end of the pressing block 13 extends into the side groove 51 of the top stopper 50 .

[0031] During operation, the driving device drives the press block 13 to press the top stopper 50 downward and push the embroidery needle assembly downward. The first compression spring 71 is compressed to generate a downward force on the middle mounting member 60 to push the middle mounting member 60 downward. The middle mounting member 60 is fixedly mounted on the presser foot rod 151. The downward movement of the middle mounting member 60 will drive the presser foot rod 151 to move downward and compress the second compression spring 72; thereby realizing the up and down movement of the embroidery needle 142 and the bottom foot 152. When it is necessary to change the color, the driving device drives the press block 13 to rotate to the top stopper 50 of the embroidery needle 142 with the corresponding color embroidery thread, and then the above work flow can be carried out.

[0032] The foot 152 is provided with a mounting portion 1521, and the mounting portion is provided with an assembly hole 1522. The assembly hole 1522 is a countersunk hole structure with a larger upper portion and a smaller lower portion, and includes a coaxial upper assembly hole and a lower assembly hole, and the diameter of the upper assembly hole is larger than the lower assembly hole. The bottom end of the presser foot rod 151 is provided with an assembly shaft 1511, and the outer diameter of the assembly shaft 1511 is smaller than the outer diameter of the presser foot rod 151. The bottom end of the presser foot rod 151 is installed in the upper assembly hole, and the assembly shaft 1511 is installed in the lower assembly hole and extends to the bottom end of the mounting portion of the foot 152. The outer surface of the assembly shaft 1511 is provided with an external thread; and a fixing nut is screwed on the assembly shaft 1511 extending from the mounting portion. When disassembly is required, the embroidery needle 142 is taken out, and then the nut is unscrewed, and the foot 152 is taken out from the presser foot rod 151 and the needle rod 141 to replace the foot 152 of a new specification; there is no need to disassemble the housing 20.

[0033] like Figures 6 to 9 As shown, it is the second embodiment of the utility model. The structure of this embodiment is basically the same as that of the first embodiment, except that: a slot 1521a is provided on the mounting portion of the base 152a, the slot width of the slot 1521a is consistent with the diameter of the needle bar 141, the needle bar 141 and the presser foot rod 151 are both inserted into the slot 1521a, and the needle bar 141 is arranged on the inner side of the slot 1521a. The base 152a is installed and fixed by a limiting assembly. The limiting assembly includes an upper limit plate 81, a lower limit plate 82, a limiting sleeve 83 and a limiting nut 84, and the upper limit plate 81 and the lower limit plate 82 are provided with positioning holes 811 arranged opposite to each other up and down; the upper limit plate 81 and the lower limit plate 82 are provided with a limiting slot 812 on the surface of one side of the needle bar 141.

[0034] A limiting flange 831 is provided on the top of the limiting sleeve 83, and an external thread is provided on the outer surface below the limiting flange 831. Furthermore, a positioning groove 832 may be provided on the outer surface of the limiting sleeve 83, and the bottom end of the limiting sleeve 83 is gradually enlarged in outer diameter upward, so that the limiting nut 84 will be locked tighter and tighter when the limiting nut 84 is screwed upward. The limiting sleeve 83 is inserted into the two positioning holes 811 from top to bottom and extends out of the bottom surface of the lower limiting plate 82, the presser foot rod 151 is inserted into the limiting sleeve 83, and the limiting nut 84 is screwed on the outer surface of the bottom of the limiting sleeve 83, so that the limiting sleeve 83 is locked on the presser foot rod 151; at the same time, the bottom foot 152 is limited between the upper limiting plate 81 and the lower limiting plate 82. When disassembly is required, the limiting nut 84 is loosened to increase the distance between the upper limiting plate 81 and the lower limiting plate 82, and the bottom foot 152a can be withdrawn from the needle bar 141 and the presser foot bar 151 from the rear; and there is no need to remove the embroidery needle, which is more convenient.

[0035] like Fig.10As shown, the limiting sleeve 83b can also be integrally formed on the upper limit plate 81b. The limiting flange 831 of the limiting sleeve 83b is integrally formed with the upper limit plate 81b, and its threaded sleeve extends downward from the positioning hole 811 of the upper limit plate 81b. This structural setting can reduce separate components and reduce the possibility of component loss.

[0036] In summary, the utility model provides a detachable foot, so that when the foot is replaced, the foot can be replaced without removing the shell. And the design of the independent structure of the upper and lower limit plates can not only realize the limitation of the presser foot rod and the foot, but also can be applicable to a variety of foots of different sizes and thicknesses, with high flexibility. In addition, the embroidery needle device 14 and the presser foot device 15 are both arranged with a detachable component structure, which is convenient for the replacement and maintenance of components. If any small component is abnormal, only the small component needs to be replaced. Compared with the traditional fixed installation structure (such as the foot and the presser foot rod are welded, and the plastic parts, needle rod and presser foot rod are integrally formed), the maintenance cost can be reduced. The utility model has strong practicality and strong promotion significance.

[0037] The above are only three preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A round head embroidery machine, comprising a frame and a head mounted on the frame, the head comprising a main body, a shell, a top cover and a control device, the top cover is arranged above the shell, the top cover and the shell are enclosed to form a containing space, the main body is arranged in the containing space, and the control device is arranged above the top cover; characterized in that: The main body includes a mounting frame and a color-changing frame, an embroidery needle device, a presser foot device, and a driving device installed on the mounting frame; the embroidery needle device and the presser foot device are both installed on the color-changing frame, the embroidery needle device includes a plurality of embroidery needle assemblies, the embroidery needle assemblies include a needle bar and an embroidery needle detachably installed at the bottom end of the needle bar; the presser foot device includes a plurality of presser foot assemblies, the presser foot assemblies include a presser foot rod and a base installed at the bottom end of the presser foot rod, the needle bar and the presser foot rod are arranged in a one-to-one correspondence, and a top limiting piece and a middle mounting piece are arranged between the same group of needle bars and the presser foot rod, the middle mounting piece is movably installed on the needle bar, and the presser foot rod is fixedly installed on the middle mounting piece; the top limiting piece on the needle bar and the middle mounting piece A first telescopic spring is arranged between the parts, and a second telescopic spring is arranged between the presser foot rod and the middle mounting part and the color changing frame; a needle bar limiting hole is arranged on the bottom surface of the top limiting part, a presser bar limiting groove is arranged on the outer surface, and a side groove is arranged on the inner surface, the top end of the needle bar is embedded in the needle bar limiting hole, and the top end of the presser foot rod extends into the presser bar limiting groove, a pressing block is arranged on the driving device, and the pressing block extends into the side groove, and the pressing block pushes the needle bar and the presser foot rod downward to move downward; a mounting part is arranged on the base foot, and the bottom ends of the needle bar and the presser foot rod are penetrated in the mounting part, and the presser foot rod is provided with an upper limit part and a lower limit part on the mounting part, and the lower limit part is a limiting nut.

2. The round head embroidery machine according to claim 1, characterized in that: The mounting portion is provided with a coaxial large-diameter upper assembly hole and a small-diameter lower assembly hole, and the bottom of the presser foot rod is provided with a threaded assembly shaft, an upper limit portion is formed between the assembly shaft and the bottom end surface of the presser foot rod, the assembly shaft is installed in the lower assembly hole and extends out of the bottom surface of the mounting portion, and the limit nut is threadedly connected to the assembly shaft outside the bottom surface of the mounting portion.

3. The round head embroidery machine according to claim 1, characterized in that: It also includes a limiting assembly, a slot is provided on the mounting portion of the base foot, the bottom ends of the needle bar and the presser foot rod are both inserted into the slot, and the presser foot rod is arranged on the outside of the needle bar, and the limiting assembly is installed on the presser foot rod and the mounting portion.

4. The round head embroidery machine according to claim 3, characterized in that: The limit assembly includes an upper limit plate, a lower limit plate, a limit sleeve and a limit nut. The limit sleeve is inserted from top to bottom through the upper limit plate, the slot, and the lower limit plate and extends out of the bottom surface of the lower limit plate. The presser foot rod is inserted into the limit sleeve, and the limit nut is screwed on the bottom outer surface of the limit sleeve.

5. The round head embroidery machine according to claim 4, characterized in that: The upper limit plate and the lower limit plate are provided with limit slots on the surface of one side of the needle bar; the needle bar is accommodated between the limit slots.

6. The round head embroidery machine according to claim 4, characterized in that: A limiting flange is arranged on the top of the limiting sleeve, an external thread is arranged on the outer surface below the limiting flange, and an adjustment groove is arranged on the outer surface of the limiting sleeve. The bottom end of the limiting sleeve is arranged with an outer diameter gradually increasing upwards.

7. The round head embroidery machine according to claim 6, characterized in that: The limiting flange of the limiting sleeve is integrally formed with the upper limit plate, and other installation areas except the limiting flange extend outwardly from the bottom surface of the upper limit plate.

8. The round head embroidery machine according to claim 1, characterized in that: A mounting rod is arranged on the mounting frame, the middle part of the color changing frame is arranged on the mounting rod, and the color changing frame can rotate along the mounting rod.

9. The round head embroidery machine according to claim 1, characterized in that: An upper plate and a lower plate are arranged on the front side of the color changing frame, and a needle bar mounting hole group and a pressure rod mounting groove group are arranged on the upper plate and the lower plate. The embroidery needle device is inserted into the needle bar mounting hole group, and the presser foot device is inserted into the pressure rod mounting groove group.

10. The round head embroidery machine according to claim 9, characterized in that: The needle bar mounting hole group includes a plurality of needle bar mounting holes arranged in an arc shape, the needle bar is inserted into the corresponding needle bar mounting holes, the pressure rod mounting groove group includes a plurality of pressure rod mounting grooves arranged in an arc shape, and the presser foot is inserted into the pressure rod mounting groove.

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