Machine head of computerized embroidery machine and computerized embroidery machine

Abstract

The utility model discloses a machine head of a computerized embroidery machine and the computerized embroidery machine. The machine head comprises a machine head cam, a needle bar driver and a presser foot driver, a first connecting rod mechanism is arranged between the machine head cam and the needle rod driver, so that the needle rod driver reciprocates in the vertical direction. The needle bar driver and the presser foot driver are arranged up and down, and a transmission mechanism is arranged between the needle bar driver and the presser foot driver, so that the presser foot driver reciprocates in the vertical direction. According to the embodiment, the needle bar driver drives the presser foot driver to move, so that an additional driving mechanism for driving the presser foot driver to move is avoided, and the production cost of the machine head is reduced; the number of assembling parts is greatly reduced, the machine head is easy and convenient to assemble, the workload of assembling personnel is reduced, and the assembling efficiency is improved.

Description

Technical Field

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

[0002] In the related art, a horse head machine drives a needle bar to move through a needle bar driver, drives a presser foot to move through a presser foot driver, and guides the presser foot driver to move up and down through a presser foot guiding structure, while restricting the presser foot driver from rotating on the driving shaft of the driver.

[0003] However, the above-mentioned presser foot transmission method is an independent transmission, with many assembled parts and a cumbersome installation. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the utility model is to provide a head of a computer embroidery machine and a computer embroidery machine, which make the assembly of the head simple and convenient, reduce the workload of assemblers, and improve the assembly efficiency.

[0005] A head of a computer embroidery machine according to a first aspect of the utility model includes: a head cam, a needle bar driver and a presser foot driver.

[0006] A first link mechanism is provided between the head cam and the needle bar driver to enable the needle bar driver to reciprocate in the vertical direction. The needle bar driver and the presser foot driver are arranged vertically, and a transmission mechanism is provided between the needle bar driver and the presser foot driver to enable the presser foot driver to reciprocate in the vertical direction. The head cam is an eccentric cam or a cylindrical groove cam, and the axis directions of the eccentric cam or the cylindrical groove cam are all along the front-back direction of the computer embroidery machine.

[0007] When the head further includes a thread take-up lever and a second link mechanism, the head cam is the cylindrical groove cam, the cylindrical groove cam has a preset groove, one end of the second link mechanism is in rolling contact with the preset groove, and the other end is connected to the thread take-up lever.

[0008] In this embodiment, the presser foot driver is driven by the needle bar driver, avoiding the need to additionally provide a driving mechanism to drive the presser foot driver, reducing the production cost of the head; greatly reducing the number of assembled parts, making the assembly of the head simple and convenient, reducing the workload of assemblers, and improving the assembly efficiency.

[0009] According to some embodiments of the utility model, the first link mechanism includes at least one rod.

[0010] According to some embodiments of the present utility model, the first link mechanism includes a two-hole rod member, one end of the two-hole rod member is hinged to the head cam, and the other end is hinged to the needle bar driver.

[0011] According to some embodiments of the present utility model, the head cam is an eccentric cam or a cylindrical groove cam, and the axial directions of the eccentric cam or the cylindrical groove cam are all along the front-back direction of the computer embroidery machine.

[0012] According to some embodiments of the present utility model, it further includes a thread take-up lever and a second link mechanism. The head cam is the cylindrical groove cam, the cylindrical groove cam has a preset groove, one end of the second link mechanism is in rolling contact with the preset groove, and the other end is connected to the thread take-up lever.

[0013] According to some embodiments of the present utility model, the preset groove is a closed annular groove.

[0014] According to some embodiments of the present utility model, the transmission mechanism includes a third link mechanism, and the third link mechanism includes a transmission rod member, a driving rod member and a rod assembly. One end of the transmission rod member is hinged to the needle bar driver, one end of the driving rod member is hinged to the presser foot driver, and the rod assembly connects the other end of the transmission rod member and the other end of the driving rod member.

[0015] According to some embodiments of the present utility model, the rod assembly includes a three-hole rod member, and the three-hole rod member has a first through hole, a second through hole and a third through hole which are arranged at intervals in sequence along its extending direction.

[0016] One end of the transmission rod member is hinged to the second through hole, one end of the driving rod member is hinged to the first through hole, and the housing of the head of the computer embroidery machine is hinged to the third through hole.

[0017] According to some embodiments of the present utility model, it further includes a guiding mechanism. The guiding mechanism is in guiding cooperation with the needle bar driver and / or the presser foot driver.

[0018] The computer embroidery machine according to the second aspect of the present utility model includes the head of the computer embroidery machine in the first aspect.

[0019] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0020] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0021] Figure 1Schematic diagram of the structure of the head of a computerized embroidery machine according to an embodiment of the present utility model;

[0022] Figure 2 Partial schematic diagram of the head of a computerized embroidery machine according to an embodiment of the present utility model;

[0023] Figure 3 Is Figure 2 Explosion schematic diagram;

[0024] Figure 4 Cross-sectional schematic diagram of a computerized embroidery machine according to an embodiment of the present utility model;

[0025] Reference numerals:

[0026] Head cam 10, preset groove 11, needle bar 20;

[0027] Needle bar driver 30, presser foot driver 40, first link mechanism 50;

[0028] Transmission mechanism 60, drive rod 61, transmission rod 62, three-hole rod 63, first through hole 631, second through hole 632, third through hole 633;

[0029] Second link mechanism 70, swing rod 71, connecting rod 72, thread take-up lever 80;

[0030] Guide mechanism 90, guide rail 91, slider 92. Detailed implementation manners

[0031] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0032] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or letters in different examples. Such repetition is for the purpose of simplification and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can recognize the applicability of other processes and / or the use of other materials.

[0033] As Figures 1-4As shown, the head of a computerized embroidery machine according to an embodiment of the first aspect of the present utility model includes: a head cam 10, a needle bar driver 30, and a presser foot driver 40.

[0034] A first link mechanism 50 is provided between the head cam 10 and the needle bar driver 30 to enable the needle bar driver 30 to reciprocate in the vertical direction.

[0035] The needle bar driver 30 and the presser foot driver 40 are arranged vertically, and a transmission mechanism 60 is provided between the needle bar driver 30 and the presser foot driver 40 to enable the presser foot driver 40 to reciprocate in the vertical direction.

[0036] It should be noted that in practical applications, the head of a computerized embroidery machine includes a machine shell, a needle bar 20, a presser foot (not shown), a head cam 10, a needle bar driver 30, and a presser foot driver 40. The head cam 10, the needle bar 20, the presser foot, the needle bar driver 30, and the presser foot driver 40 are all located inside the machine shell.

[0037] As Figure 1 and Figure 2 shown, the head cam 10 can be an eccentric cam, the axis direction of the eccentric cam is the left - right direction, the head cam 10 can be a cylindrical groove cam, and the axis of the cylindrical groove cam can be the front - back direction.

[0038] As Figure 2 shown, the needle bar driver 30 and the presser foot driver 40 are arranged vertically and are both sleeved on the needle bar 20. The needle bar driver 30 is used to make the needle bar 20 reciprocate in the vertical direction, the presser foot is connected to the presser foot driver 40, and the presser foot driver 40 makes the presser foot reciprocate in the vertical direction.

[0039] A first link mechanism 50 is provided between the head cam 10 and the needle bar driver 30. When the head cam 10 moves, it drives the first link mechanism 50 to move, and the first link mechanism 50 then drives the needle bar driver 30. The first link mechanism 50 can include one rod, can include two rods, can include three rods, ……, and this embodiment will not list them one by one.

[0040] With such a setting, the structure of the first link mechanism 50 is simple, the work is reliable, which further ensures the movement stability of the needle bar driver 30; it has strong adaptability, wide application, and low cost.

[0041] As Figure 2As shown, a transmission mechanism 60 is provided between the needle bar driver 30 and the presser foot driver 40 to enable the presser foot driver 40 to reciprocate in the vertical direction. Driving the presser foot driver 40 to move through the needle bar driver 30 avoids the need to additionally set up a driving mechanism to drive the presser foot driver 40 to move, reducing the production cost of the machine head; greatly reducing the number of assembled parts, making the assembly of the machine head simple and convenient, reducing the workload of the assembly personnel, and improving the assembly efficiency.

[0042] Taking the machine head cam 10 as a cylindrical groove cam as an example, the cylindrical groove cam is installed on the main shaft, and the working principle of the machine head is as follows:

[0043] As shown in Figure 2, the main shaft drives the cylindrical groove cam to rotate, and the cylindrical groove cam drives the first link mechanism 50 to move. The first link mechanism 50 enables the needle bar driver 30 to reciprocate in the vertical direction. The needle bar driver 30 drives the presser foot driver 40 to move along a preset trajectory (reciprocating motion in the vertical direction) through the transmission mechanism 60.

[0044] It should be noted that the following embodiments take the machine head cam 10 as a cylindrical groove cam as an example:

[0045] In some embodiments of the present invention, as Figure 3 shown, the first link mechanism 50 includes a two-hole rod. One end of the two-hole rod is hinged to the end face of the cylindrical groove cam, and the other end is hinged to the needle bar driver 30. This first link mechanism 50 only includes one rod, reducing the number of rods in the first link mechanism 50, which can make the assembly of the machine head simple and convenient.

[0046] Furthermore, as Figure 3 shown, the machine head of the computerized embroidery machine further includes a thread take-up lever 80 and a second link mechanism 70.

[0047] The cylindrical groove cam has a preset groove 11, which is recessed on the side surface of the cylindrical groove cam. The preset groove 11 can be a closed annular groove. The second link mechanism 70 can include one rod, can include two rods, can include three rods, ……, and this embodiment will not list them one by one.

[0048] One end of the second link mechanism 70 is located in the above-mentioned closed annular groove and is in rolling contact with it; the other end is connected to the thread take-up lever 80.

[0049] It should be noted that a slider, a pulley, a ball, etc. are installed at one end of the second link mechanism 70. When the cylindrical groove cam rotates 360°, the above-mentioned slider, pulley, and ball can move along the extension direction of the closed annular groove, thereby driving the second link mechanism 70 to move, and the second link mechanism 70 drives the thread take-up lever 80 to move along a preset trajectory. With such a setting, it is avoided to additionally set a driving mechanism to drive the thread take-up lever 80 to move, reducing the production cost of the machine head; the number of assembled parts is greatly reduced, and the assembly of the machine head is simple and convenient.

[0050] In a specific embodiment, as Figure 3 and Figure 4 shown, the second link mechanism 70 includes a swing link 71 and a connecting link 72. A ball is installed at one end of the swing link 71, the other end of the swing link 71 is hinged to one end of the connecting link 72, and the other end of the connecting link 72 is fixedly connected to the thread take-up lever 80, so that the thread take-up lever 80 moves along a preset trajectory.

[0051] In some embodiments of the present invention, the transmission mechanism 60 includes a third link mechanism. The third link mechanism includes a transmission link 62, a driving link 61 and a rod assembly. One end of the transmission link 62 is hinged to the needle bar driver 30, one end of the driving link 61 is hinged to the presser foot driver 40, and the rod assembly connects the other end of the transmission link 62 and the other end of the driving link 61.

[0052] In a specific embodiment, as Figure 3 shown, the rod assembly includes a three-hole rod 63. The three-hole rod 63 has a first through hole 631, a second through hole 632 and a third through hole 633. The first through hole 631, the second through hole 632 and the third through hole 633 are arranged at intervals in sequence along the extension direction of the three-hole rod 63. One end of the transmission link 62 is hinged to the second through hole 632, one end of the driving link 61 is hinged to the first through hole 631, and the rotating shaft passes through the third through hole 633 and is connected to the housing of the machine head. This rod assembly only includes one rod, reducing the number of rods in the first link mechanism 50, which can make the assembly of the machine head simple and convenient.

[0053] Of course, it can be understood that the rod assembly can include multiple rods, and the number of rods can be 3, 4, 6,... This embodiment does not limit this. In addition, in addition to the third link mechanism, the transmission mechanism 60 can also be other suitable mechanisms.

[0054] Further, in some embodiments, the guiding mechanism 90 can be in guiding cooperation with the needle bar driver 30, so that the needle bar driver 30 reciprocates in the vertical direction. In other embodiments, the guiding mechanism 90 can be in guiding cooperation with the presser foot driver 40, so that the presser foot driver 40 reciprocates in the vertical direction. In still other embodiments, the guiding mechanism 90 can be in guiding cooperation with the needle bar driver 30 and in guiding cooperation with the presser foot driver 40 at the same time, so that the needle bar driver 30 reciprocates in the vertical direction and the presser foot driver 40 reciprocates in the vertical direction.

[0055] It should be noted that in practical applications, the needle bar driver 30 is sleeved on the needle bar 20. There are machining errors on the needle bar driver 30 or / and the needle bar 20, and there is a small gap between the needle bar driver 30 and the needle bar 20. Therefore, the needle bar driver 30 has a problem of shaking in the horizontal direction, and furthermore, there is friction on the needle bar driver 30, which affects its service life. Similarly, there is a small gap between the presser foot driver 40 and the needle bar 20. The presser foot driver 40 has a problem of shaking in the horizontal direction, and there is friction on the presser foot driver 40, which affects its service life.

[0056] Based on this, the guiding mechanism 90 is in guiding cooperation with the needle bar driver 30, which restrains the freedom degree of the needle bar driver 30 in the horizontal direction, so that the needle bar driver 30 can only move in the vertical direction, avoiding the friction of the needle bar driver 30 and extending its service life. The guiding mechanism 90 is in guiding cooperation with the presser foot driver 40, which restrains the freedom degree of the presser foot driver 40 in the horizontal direction, so that the presser foot driver 40 can only move in the vertical direction, avoiding the friction of the presser foot driver 40 and extending its service life.

[0057] In a specific embodiment, as Figure 3 shown, the guiding mechanism 90 includes a guide rail 91 and a slider 92. The slider 92 is connected to the needle bar driver 30, and the slider 92 is in sliding cooperation with the guide rail 91. The sliding cooperation between the slider 92 and the guide rail 91 has a guiding effect on the needle bar driver 30, restrains the freedom degree of the needle bar driver 30 in the horizontal direction, avoids the friction between the needle bar driver 30 and the first link mechanism 50, and avoids the friction between the needle bar driver 30 and the transmission rod 62, and can extend its service life.

[0058] The computerized embroidery machine according to the embodiment of the second aspect of the present invention includes the head of the computerized embroidery machine in the first aspect.

[0059] Therefore, the computerized embroidery machine has the above-mentioned advantages of the machine head. By driving the presser foot driver 40 through the needle bar driver 30, it avoids the need to additionally set up a driving mechanism to drive the presser foot driver 40, reducing the production cost of the machine head; greatly reducing the number of assembled parts, the assembly of the machine head is simple and convenient, reducing the workload of the assembly personnel and improving the assembly efficiency.

[0060] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0061] In the description of the present invention, the "first feature" and "second feature" may include one or more of such features.

[0062] In the description of the present invention, the meaning of "a plurality" is two or more.

[0063] In the description of the present invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0064] In the description of the present invention, the first feature being "above", "above the top" and "on the upper surface" of the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature.

[0065] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0066] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A head of a computer embroidery machine, characterized in that: include: Head cam; A needle bar driver, wherein a first connecting rod mechanism is provided between the machine head cam and the needle bar driver so as to enable the needle bar driver to reciprocate in a vertical direction; The presser foot driver; the needle bar driver and the presser foot driver are arranged up and down, and a transmission mechanism is arranged between the needle bar driver and the presser foot driver so that the presser foot driver can reciprocate in the vertical direction, and the head cam is an eccentric cam or a cylindrical groove cam, and the axis direction of the eccentric cam or the cylindrical groove cam is along the front and rear direction of the computer embroidery machine, When the machine head further includes a thread take-up lever and a second connecting rod mechanism, the machine head cam is the cylindrical groove cam having a preset groove, one end of the second connecting rod mechanism is in rolling contact with the preset groove, and the other end is connected to the thread take-up lever.

2. The head of the computer embroidery machine according to claim 1, characterized in that: The first linkage mechanism includes at least one rod.

3. The head of the computer embroidery machine according to claim 2, characterized in that: The first connecting rod mechanism comprises a two-hole rod, one end of which is hinged to the machine head cam, and the other end of which is hinged to the needle bar driver.

4. The head of the computer embroidery machine according to claim 1, characterized in that: The preset groove is a closed annular groove.

5. The head of the computer embroidery machine according to claim 1, characterized in that: The transmission mechanism includes a third connecting rod mechanism, and the third connecting rod mechanism includes a transmission rod, a driving rod and a rod assembly. One end of the transmission rod is hinged to the needle bar driver, and one end of the driving rod is hinged to the presser foot driver. The rod assembly connects the other end of the transmission rod and the other end of the driving rod.

6. The head of the computer embroidery machine according to claim 5, characterized in that: The rod assembly comprises a three-hole rod member, wherein the three-hole rod member has a first through hole, a second through hole and a third through hole which are sequentially arranged at intervals along the extending direction thereof. One end of the transmission rod is hinged to the second through hole, one end of the driving rod is hinged to the first through hole, and the housing of the head of the computer embroidery machine is hinged to the third through hole.

7. The head of the computer embroidery machine according to any one of claims 1 to 6, characterized in that: It also includes a guiding mechanism, which cooperates with the needle bar driver and / or the presser foot driver.

8. A computer embroidery machine, characterized in that: A machine head for a computer embroidery machine comprising any one of claims 1-7.

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