Balancing head for computerized embroidery machine

Abstract

A kind of balance head for computerized embroidery machine, including head body, needle bar assembly and the head main shaft for driving needle bar assembly to carry out embroidery are installed to head body;Balance assembly for realizing the stable rotation of head main shaft is installed on the head main shaft;The balance assembly includes the balance piece of sleeve joint on the head main shaft and the balance connecting rod connected to the head body, the fulcrum pin for supporting the rotary connection of balance connecting rod and head body is equipped to balance connecting rod, the transmission connecting rod for being connected with balance connecting rod is equipped to the bottom of balance piece, and transmission connecting rod is set in dislocation with fulcrum pin;Compared with prior art, by installing balance assembly for cancelling the vibration of head main shaft on head main shaft, the vibration of head main shaft is transmitted to the counterweight of balance connecting rod by balance piece, and the vibration of head main shaft is cancelled by the vibration of counterweight, so that head main shaft is in balanced state during rotation.

Description

Technical Field

[0001] This utility model relates to the field of embroidery machine technology, specifically to a balancing head for a computerized embroidery machine. Background Technology

[0002] High-speed computerized embroidery machines are automated embroidery equipment that integrates electronic, mechanical, and software technologies. Their core advantages are high speed, high efficiency, precision, and stability. They are widely used in mass production in industries such as clothing, home textiles, and footwear. The design and manufacturing level of high-speed computerized embroidery machines directly determines the embroidery speed, stability, noise control, and embroidery quality of the entire machine.

[0003] The machine head of a computerized embroidery machine is a crucial component for performing actions such as needle bar embroidery, presser foot pressing the fabric, hook knife hooking the thread, and thread take-up lever taking the thread. Therefore, the stability of the machine head during the embroidery process determines the quality of the embroidery.

[0004] Chinese patent CN110565290A discloses a machine head for an embroidery machine, including a machine head spindle, several bearing seats, a balance block, a cantilever body, a needle bar frame with a needle bar assembly, a presser foot assembly, and a thread take-up rod assembly, a thread take-up rod transmission assembly, a needle bar transmission assembly, and a presser foot transmission assembly. The machine head spindle is mounted on the cantilever body via bearing seats. The machine head spindle is equipped with a balance block. The front end of the cantilever body is equipped with a needle bar frame via a slide rail. The front end of the cantilever body is equipped with a color-changing drive mechanism for driving the needle bar frame. The machine head spindle drives the thread take-up rod transmission assembly, the needle bar transmission assembly, and the presser foot transmission assembly.

[0005] Although the aforementioned embroidery machine head discloses the installation of a balance block on the main shaft to adjust the stability of the main shaft, this balance block is directly connected to the main shaft. When the main shaft vibrates significantly, the vibration amplitude is transmitted to the balance block. Without additional restraint to connect the balance block, the vibration of the balance block will further affect the vibration of the main shaft, thereby affecting the overall embroidery stability of the machine head and the quality of the embroidery. Utility Model Content

[0006] The present invention aims to overcome the defects in the prior art and provide a balancing head for computerized embroidery machines that is easy to install and has a simple structure.

[0007] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a balancing head for a computerized embroidery machine, comprising a head body, a needle bar assembly and a head spindle for driving the needle bar assembly to perform embroidery; a balancing component for achieving stable rotation of the head spindle is mounted on the head spindle; the balancing component includes a balancing element sleeved on the head spindle and a balancing connecting rod connected to the head body, the balancing connecting rod having a fulcrum pin for supporting the balancing connecting rod's rotational connection with the head body, a transmission connecting rod connected to the balancing connecting rod at the bottom of the balancing element, the transmission connecting rod being offset from the fulcrum pin; a counterweight is connected to the end of the balancing connecting rod, the counterweight having a balancing tension spring connected to the head body.

[0008] As a preferred embodiment of this utility model, the balancing component has an eccentrically arranged connecting sleeve in the middle, and the connecting sleeve is sleeved on the main shaft of the machine head.

[0009] As a preferred embodiment of this utility model, the main shaft of the machine head is provided with a first cam sleeve and a second cam sleeve for clamping the balancing component, and the first cam sleeve and the second cam sleeve are clamped on opposite sides of the balancing component.

[0010] In a preferred embodiment of this utility model, the protrusion direction of the first cam ring is opposite to that of the protrusion direction of the second cam ring.

[0011] As a preferred embodiment of this utility model, the counterweight is detachably connected to the end of the balance rod, and the balance rod is provided with a connecting hole for detaching and installing the counterweight and an installation notch for installing the counterweight.

[0012] As a preferred embodiment of this utility model, the balance link is provided with a connecting pin that is hinged to the transmission link, and the connecting pin is located between the fulcrum pin and the counterweight.

[0013] As a preferred embodiment of this utility model, the main body of the machine head is provided with a limiting hole for restricting the movement of the connecting pin.

[0014] In a preferred embodiment of this utility model, the fulcrum pin and the counterweight are respectively connected to both ends of the balance link.

[0015] As a preferred embodiment of this utility model, the main body of the machine head is provided with a balance cover for covering the balance assembly.

[0016] As a preferred embodiment of this utility model, a balance spring for balancing and buffering the needle bar assembly is installed on the needle bar assembly.

[0017] Compared with the prior art, this application installs a balancing component on the machine head spindle to counteract the vibration of the machine head spindle. This allows the vibration of the machine head spindle to be transmitted to the counterweight of the balance link through the balancing component. The vibration of the counterweight cancels out the vibration of the machine head spindle, thus achieving a balanced state for the machine head spindle during rotation. Meanwhile, a balance spring connected to the main body of the machine head is installed on the counterweight. The balance spring supports the counterweight and further buffers the vibration generated by the counterweight. Under the support of the balance spring, there is no need to consider the phenomenon that the counterweight's own weight causes the balance link to swing downward, affecting the balancing component's pressure on the main shaft of the machine head. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the installation of the balancing components; Figure 3 This is an exploded view of the balancing components; Figure 4 This is a structural schematic diagram of the balancing component; Figure 5 This is a schematic diagram showing the connection between the balance rod and the counterweight; Reference numerals: 1. Machine head body, 11. Limiting hole, 2. Needle bar assembly, 21. Balance spring, 3. Machine head spindle, 31. First cam sleeve, 32. Second cam sleeve, 4. Balance assembly, 5. Balance component, 51. Transmission link, 52. Connecting sleeve, 6. Balance link, 61. Pivot pin, 62. Connecting pin, 63. Connecting hole, 64. Mounting notch, 7. Counterweight, 71. Balance spring, 8. Balance cover. Detailed Implementation

[0019] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0020] like Figures 1-5 As shown, a balancing head for a computerized embroidery machine includes a head body 1, on which a needle bar assembly 2 and a head spindle 3 for driving the needle bar assembly 2 to perform embroidery are mounted. A balancing component 4 for achieving stable rotation of the head spindle 3 is mounted on the head spindle 3. The balancing component 4 includes a balancing element 5 sleeved on the head spindle 3 and a balancing connecting rod 6 connected to the head body 1. The balancing connecting rod 6 has a fulcrum pin 61 for supporting the rotatable connection between the balancing connecting rod 6 and the head body 1. A transmission connecting rod 51 connected to the balancing connecting rod 6 is located at the bottom of the balancing element 5, and the transmission connecting rod 51 is offset from the fulcrum pin 61. A counterweight 7 is connected to the end of the balancing connecting rod 6, and the counterweight 7 has a balancing tension spring 71 connected to the head body 1.

[0021] The main shaft 3 of the machine head provides power to the main body 1 of the machine head. The rotational motion of the main shaft 3 of the machine head is converted into the up-and-down reciprocating motion of the needle bar assembly 2 through the direction of transmission by the synchronous belt or gear, thereby realizing the piercing of the fabric under the action of the needle bar assembly 2 and forming needle marks.

[0022] The main spindle 3 of the machine head is rotating during operation, so the main spindle 3 of the machine head is accompanied by shaft runout during operation. The balancing component 4 is used to balance the shaft runout of the main spindle 3 during operation, thereby achieving smooth operation of the main spindle 3 of the machine head, which in turn drives the stable operation of the needle bar assembly 2.

[0023] During the high-speed rotation of the main spindle 3, the needle bar assembly 2, being installed on one side of the main spindle 3, causes the main spindle 3 to generate centrifugal inertial force, resulting in vibration of the main spindle 3.

[0024] The vibration generated by the machine head spindle 3 is transmitted to the balance component 5, and then to the balance link 6 through the transmission link 51, which drives the counterweight 7 on the balance link 6 to vibrate synchronously. The weight of the counterweight 7 is calculated according to actual needs. The magnitude of the eccentric inertial force generated by the counterweight 7 is equal to and opposite to the centrifugal inertial force generated by the machine head spindle 3. After they cancel each other out, the resultant force when the machine head spindle 3 rotates approaches zero, thus achieving stable rotation of the machine head spindle 3.

[0025] The balancing component 5 has an eccentrically positioned connecting sleeve 52 in the middle. The connecting sleeve 52 is sleeved on the machine head spindle 3. When the machine head spindle 3 vibrates, the vibration force is transmitted to the balancing component 5 through the connecting sleeve 52 and then to the balancing connecting rod 6 through the transmission connecting rod 51.

[0026] The main shaft 3 of the machine head is provided with a first cam sleeve 31 and a second cam sleeve 32 for clamping the balance component 5. The first cam sleeve 31 and the second cam sleeve 32 are clamped on opposite sides of the balance component 5, and the protrusion direction of the first cam sleeve 31 is opposite to the protrusion direction of the second cam sleeve 32.

[0027] The first cam ring 31 and the second cam ring 32 rotate synchronously with the machine head spindle 3. Under the installation action of the first cam ring 31 and the second cam ring 32, the balance component 5 is limited in the axial direction of the machine head spindle 3, ensuring that the balance component 5 only receives the vibration generated by the machine head spindle 3.

[0028] The counterweight 7 is detachably connected to the end of the balance link 6, and the balance link 6 is provided with a connection hole 63 for detaching and installing the counterweight 7 and an installation notch 64 for installing the counterweight 7.

[0029] With the help of the connecting hole 63, the counterweight 7 and the balance rod 6 can be detachably connected by installing a detachable bolt in the connecting hole 63. The counterweight 7 with different weights can be replaced as needed. At the same time, with the help of the mounting notch 64, the counterweight 7 can be made to fit against the balance rod 6 on both sides, thereby ensuring the connection stability between the balance rod 6 and the counterweight 7.

[0030] The balance link 6 is provided with a connecting pin 62 that is hinged to the transmission link 51. The connecting pin 62 is located between the fulcrum pin 61 and the counterweight 7. The machine head body 1 has a limiting hole 11 for restricting the movement of the connecting pin 62. The fulcrum pin 61 and the counterweight 7 are respectively connected to the two ends of the balance link 6.

[0031] The limiting hole 11 is used to limit the large movement of the connecting pin 62, thereby protecting the overall balance assembly 4. Under the action of the connecting pin 62, which is misaligned with the fulcrum pin 61, the balance link 6 can swing with the fulcrum pin 61 as the center, and amplify the swing of the counterweight 7 connected to the end of the balance link 6.

[0032] The main body 1 of the machine head is provided with a balance cover 8 for covering the balance component 4, which is used to protect the balance component 4 and prevent external forces from interfering with the balance component 4.

[0033] A balance spring 21 is installed on the needle bar assembly 2 for balancing and buffering the needle bar assembly 2.

[0034] In actual use, by installing a balance spring 71 connected to the machine head body 1 on the counterweight 7, the balance spring 71 supports the counterweight 7 and further buffers the vibration generated by the counterweight 7. Under the support of the balance spring 71, there is no need to consider the phenomenon that the counterweight 7's own weight causes the balance link 6 to swing downward, affecting the balance component 5 pressing the machine head main shaft 3.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0036] Although this document uses numerous reference numerals from the accompanying drawings—such as: machine head body 1, limiting hole 11, needle bar assembly 2, balance spring 21, machine head main shaft 3, first cam sleeve 31, second cam sleeve 32, balance assembly 4, balance component 5, transmission link 51, connecting sleeve 52, balance link 6, fulcrum pin 61, connecting pin 62, connecting hole 63, mounting notch 64, counterweight 7, balance tension spring 71, and balance cover 8—the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A balancing head for a computerized embroidery machine, comprising a head body (1), a needle bar assembly (2) mounted on the head body (1), and a head spindle (3) for driving the needle bar assembly (2) to perform embroidery; characterized in that, The main shaft (3) of the machine head is equipped with a balancing assembly (4) for achieving stable rotation of the main shaft (3); the balancing assembly (4) includes a balancing component (5) sleeved on the main shaft (3) of the machine head and a balancing connecting rod (6) connected to the main body (1) of the machine head. The balancing connecting rod (6) is provided with a fulcrum pin (61) for supporting the balancing connecting rod (6) and the main body (1) of the machine head to rotate. The bottom of the balancing component (5) is provided with a transmission connecting rod (51) connected to the balancing connecting rod (6). The transmission connecting rod (51) and the fulcrum pin (61) are misaligned. The end of the balancing connecting rod (6) is connected with a counterweight (7). The counterweight (7) is provided with a balance tension spring (71) connected to the main body (1) of the machine head.

2. The balancing head for a computerized embroidery machine according to claim 1, characterized in that, The balancing component (5) has an eccentrically positioned connecting sleeve (52) in the middle, which is sleeved on the machine head spindle (3).

3. A balancing head for a computerized embroidery machine according to claim 2, characterized in that, The main shaft (3) of the machine head is provided with a first cam sleeve (31) and a second cam sleeve (32) for clamping the balance component (5). The first cam sleeve (31) and the second cam sleeve (32) are clamped on opposite sides of the balance component (5).

4. A balancing head for a computerized embroidery machine according to claim 3, characterized in that, The protrusion direction of the first cam sleeve (31) is opposite to that of the protrusion direction of the second cam sleeve (32).

5. A balancing head for a computerized embroidery machine according to claim 1, characterized in that, The counterweight (7) is detachably connected to the end of the balance link (6), and the balance link (6) is provided with a connection hole (63) for detaching and installing the counterweight (7) and an installation notch (64) for installing the counterweight (7).

6. A balancing head for a computerized embroidery machine according to claim 1, characterized in that, The balance link (6) is provided with a connecting pin (62) that is hinged to the transmission link (51). The connecting pin (62) is located between the fulcrum pin (61) and the counterweight (7).

7. A balancing head for a computerized embroidery machine according to claim 6, characterized in that, The main body (1) of the machine head has a limiting hole (11) for restricting the movement of the connecting pin (62).

8. A balancing head for a computerized embroidery machine according to claim 1, characterized in that, The fulcrum pin (61) and the counterweight (7) are respectively connected to the two ends of the balance link (6).

9. A balancing head for a computerized embroidery machine according to claim 1, characterized in that, The machine head body (1) is provided with a balance cover (8) for covering the balance assembly (4).

10. A balancing head for a computerized embroidery machine according to claim 1, characterized in that, The needle bar assembly (2) is equipped with a balance spring (21) for balancing and buffering the needle bar assembly (2).

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