Presser foot device applied to multi-color tape color changing mechanism of embroidery machine

Abstract

The presser foot device applied to the multi-color taping color changing mechanism of the embroidery machine comprises a fixed seat mounted on a taping rope wheel assembly, a sliding assembly mounted on the fixed seat, a pressing rod assembly mounted on the sliding assembly, and a driving assembly mounted on a needle rod mechanism and used for driving the sliding assembly to move up and down, the driving assembly is matched with the sliding assembly in a clamped mode, a fixing base is arranged on the belt coiling rope wheel assembly, the sliding assembly is arranged on one side of the fixing base, the pressing rod assembly is installed on the sliding assembly and slides along with the sliding assembly, and meanwhile a clamping block is arranged on the needle rod mechanism. According to the design, the presser foot assembly can move up and down through cooperation of the clamping block and the clamping block, the structure is simple, installation and maintenance are convenient, cooperation of the clamping block and the clamping block can be achieved without too high precision, and the machining cost is saved.

Description

Technical Field

[0001] This utility model belongs to the technical field of embroidery machine equipment, specifically relating to a presser foot device applied to the color-changing mechanism of a multi-color tape in an embroidery machine. Background Technology

[0002] The applicant previously disclosed an automatic multi-color ribbon changing embroidery machine, Chinese patent application number CN202310080272.6, which specifically includes a machine housing beam, a needle bar mechanism for driving the thread output, a sewing platform for placing fabric for embroidery sewing, several color-changing heads loaded with different colored ribbons, a sewing station for the color-changing heads to enter and be installed for embroidery sewing, a changing mechanism connected to the needle bar mechanism for changing the corresponding color-changing head into the sewing station, and a mechanism for moving the color-changing heads to a position directly opposite the sewing station. The device includes a left-right moving mechanism and a cutting mechanism for cutting the ribbon after embroidery and sewing. In this structure, the changing mechanism uses a gripper to disengage the clamp on the color-changing head from the clamp seat, and then uses a forward-backward moving mechanism to move the color-changing head back and forth between the needle bar mechanism and the left-right moving mechanism, thereby realizing the changing of the ribbon. In this structure, the color-changing head includes an outer sleeve rod and an inner sleeve rod. The outer side of the inner sleeve rod is provided with a presser foot for pressing the ribbon onto the worktable. When sewing is in progress, the needle bar mechanism drives the inner sleeve rod to control the presser foot to move up and down, enabling the device to automatically press and release the fabric.

[0003] However, in this structure, the inner sleeve rod needs to be inserted into the outer sleeve rod and slide with it. The outer sleeve rod, in turn, needs to be nested with the inner sleeve rod on the needle bar mechanism. This structure requires high precision in the fit between the inner sleeve rod and the outer sleeve rod. An interference fit will prevent the inner sleeve rod from sliding, while a clearance fit will cause the inner sleeve rod to vibrate when sliding. Therefore, the fault tolerance is low, the processing cost is high, and this type of connection is relatively troublesome to install or disassemble, making maintenance inconvenient. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a presser foot device for use in the color changing mechanism of a multi-color tape in an embroidery machine.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A presser foot device applied to the color-changing mechanism of a multi-color tape reel in an embroidery machine includes a fixed base mounted on the tape reel wheel assembly, a sliding assembly mounted on the fixed base, and a presser rod assembly mounted on the sliding assembly. The presser foot device also includes a drive assembly mounted on the needle bar mechanism for driving the sliding assembly to move up and down. The drive assembly is engaged with the sliding assembly.

[0007] The drive assembly includes a clamping block detachably mounted on the needle bar mechanism and a locking block rotatably mounted on the clamping block for connecting the sliding assembly. The sliding assembly includes a slide mounted on a fixed base, a slider mounted on the slide, and a locking block mounted on the top of the slider. The locking block has a slot facing forward for engaging the locking block. The locking block engages radially into the slot to complete the engagement.

[0008] Furthermore, the side of the bayonet facing the card block is also provided with a guide slope to facilitate the card block's insertion into the bayonet.

[0009] Furthermore, the pressure rod assembly is installed at the bottom of the slider and includes a connecting block for connecting to the slider and a pressure head movably installed on the connecting block. The pressure head is provided with an elongated hole for easy adjustment of the installation position, and the pressure head is fastened to the connecting block by bolts passing through the elongated hole.

[0010] In this utility model, the fixing plate is also equipped with a limiting component for restricting the free sliding of the slider. The limiting component includes a limiting seat installed on the outside of the fixing seat and a limiting block threadedly connected in the limiting seat. The limiting block extends toward the snap-fit ​​block and abuts against the snap-fit ​​block.

[0011] Furthermore, the limiting block is hollow inside, and one end of the limiting block is provided with a through-hole for connecting the inside and outside. The limiting block is provided with a steel ball and a return spring. The diameter of the steel ball is larger than the diameter of the through-hole. The return spring pushes the steel ball against the through-hole and a part of the steel column extends outward.

[0012] Furthermore, the snap-fit ​​block is provided with a limiting groove for engaging the steel ball, and the steel ball rests against the limiting groove.

[0013] In this utility model, the limiting block and the limiting seat are adjustable. The end of the limiting block away from the opening is provided with a hexagonal groove for rotating the limiting block, and the limiting seat is provided with an adjustment hole that connects to the hexagonal groove.

[0014] This utility model has the following advantages and beneficial effects:

[0015] A fixed seat is set on the pulley assembly, and a sliding component is set on one side of the fixed seat. The pressure bar assembly is mounted on the sliding component and slides with it. At the same time, a locking block is set on the needle bar mechanism. This design allows the pressure foot assembly to move up and down through the cooperation of the locking block and the locking block. The structure is simple and easy to install and maintain. Moreover, the cooperation between the locking block and the locking block does not require high precision, thus saving processing costs. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the color-changing mechanism in this embodiment;

[0018] Figure 2 This is a side view of the color-changing mechanism in this embodiment;

[0019] Figure 3 for Figure 1 Enlarged view of region A in the middle;

[0020] Figure 4 This is a schematic diagram of the presser foot device in this embodiment;

[0021] Figure 5 This is a schematic diagram of the pulley assembly in this embodiment;

[0022] Figure 6 for Figure 5 Enlarged view of region B in the middle;

[0023] Figure 7 This is a disassembled diagram of the limiting component in this embodiment. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. However, this utility model is not limited to the following embodiments.

[0025] like Figures 1 to 7 As shown, this embodiment discloses a presser foot device applied to a multi-color tape changing mechanism of an embroidery machine. The changing mechanism includes a machine housing beam 1, a needle bar mechanism 2 installed in front of the machine housing beam 1 for driving the sewing thread output, a tape pulley assembly 3 installed at the bottom of the needle bar mechanism 2 for sewing, a changing mechanism 4 installed behind the needle bar mechanism 2 for replacing the tape pulley assembly 3, and a tape cutting mechanism 5 installed at the bottom of the machine housing beam 1 for cutting the tape before changing the color. The changing mechanism also includes a left-right moving mechanism 6 located between the needle bar mechanism 2 and the changing mechanism 4. The left-right moving mechanism 6 is equipped with multiple spare tape pulley assemblies 3 loaded with different color tapes. The changing mechanism 4 disassembles the tape pulley assembly 3 on the needle bar mechanism 2 and sends it to the left-right moving mechanism 6 for hanging. Then, the left-right moving mechanism 6 moves the required spare tape pulley assembly 3 between the changing mechanism 4 and the needle bar mechanism 2. The changing mechanism 4 sends the spare tape pulley assembly 3 to the needle bar mechanism 2.

[0026] In this embodiment, the presser foot device 7 is installed on one side of the reel assembly 3. The presser foot device 7 includes a fixed seat 71 installed on the reel assembly 3, a sliding component 72 installed on the fixed seat 71, and a presser rod component 73 installed on the sliding component 72. The presser foot device 7 also includes a drive component 74 installed on the needle bar mechanism 2 for driving the sliding component 72 to move up and down. The drive component 74 is engaged with the sliding component 72. Specifically, the fixed seat 71 is fixed to the bottom of the reel assembly 3 with a concave plate to form an enclosed structure, and the presser foot device 7 is located inside the fixed seat 71.

[0027] Furthermore, the drive assembly 74 includes a clamping block 741 detachably mounted on the needle bar mechanism 2 and a locking block 742 rotatably mounted on the clamping block 741 for connecting the sliding assembly 72. Specifically, the clamping block 741 is a U-shaped seat with an opening at one end, fitted onto the needle bar mechanism 2 and then clamped and fixed by bolts at the opening. To save costs, the locking block 742 uses a rolling bearing as a connecting component. The sliding assembly 72 includes a slide block 721 mounted on the fixed base 71, a slider 722 fitted on the slide block 721, and a locking block 723 mounted on the top of the slider 722. The connecting block 723 has a front-facing slot 724 for engaging the locking block 742. To prevent the locking block 723 from affecting the installation of the pulley assembly 3, the locking block 723 has a flat block structure, which also saves costs. When the pulley assembly 3 is installed with the needle bar mechanism 2 via the changing mechanism 4, the locking block 742 is radially engaged into the slot 724. Preferably, the side of the slot 724 facing the locking block 742 also has a guide slope to facilitate the locking block 742 engaging into the slot 724. The guide slope makes the slot 724 have an outwardly expanding V-shaped structure. Preferably, the locking block is a rotating bearing.

[0028] Furthermore, the pressure bar assembly 73 is installed at the bottom of the slider 722, specifically including a connecting block 731 for connecting to the slider 722 and a pressure head 732 movably installed on the connecting block 731. The pressure head 732 is provided with an elongated hole 733 for easy adjustment of the installation position. The pressure head 732 is fastened to the connecting block 731 by bolts passing through the elongated hole 733. By using an adjustable pressure head 732, the coiled rope wheel assembly 3 can be adjusted to a suitable position according to the actual height of the sewing platform after installation, which makes the equipment debugging more convenient.

[0029] In this embodiment, since the sliding component 72 is vertically arranged, when the changing mechanism 4 moves with the pulley assembly 3, the locking block 723 installed on the slider 722 may slip off. Therefore, a limiting component 75 for restricting the free slip of the slider 722 is also installed on the fixed base 71. The limiting component 75 includes a limiting seat 751 installed on the outside of the fixed base 71 and a limiting block 752 threadedly connected to the limiting seat 751. The limiting block 752 extends toward the locking block 723. The limiting block 752 is hollow inside, and one end of the limiting block 752 is provided with a through-hole for connecting the inside and outside. The limiting block 752 is provided with a steel ball 753 and a return spring 754 inside. The diameter of the steel ball 753 is larger than the diameter of the through-hole. The return spring 754 pushes the steel ball 753 against the through-hole, and a part of the steel column extends outward and abuts against the locking block 723.

[0030] Furthermore, the latching block 723 is provided with a limiting groove 725 for engaging the steel ball 753. When the latching block 723 slides down due to gravity, the steel ball 753 abuts against the limiting groove 725, and the return spring 754 provides a certain elastic force to prevent the steel ball 753 from shrinking inward. When the latching block 723 is driven by an external force, this external force can overcome the elastic force and push the steel column back into the limiting block 752, causing the latching block 723 to slide.

[0031] Preferably, in order to adjust the spring force, the limiting block 752 and the limiting seat 751 are adjustable. The end of the limiting block 752 away from the opening is provided with a hexagonal groove for rotating the limiting block 752. The limiting seat 751 is provided with an adjustment hole 755 that connects to the hexagonal groove. By passing a hexagonal handle through the adjustment hole 755 and inserting it into the hexagonal groove, the limiting block 752 can be rotated to adjust the distance by which the limiting block 752 extends outward.

[0032] In this embodiment, clamps are symmetrically installed on both sides of the top of the pulley assembly 3. The bottom of the left and right moving mechanism 6 and the needle bar mechanism 2 are provided with clamping seats for clamping and installation with the clamps. The clamps on both sides of the pulley assembly 3 are clamped on the clamping seats to complete the installation. The clamps include a mounting seat fixed to the top of the pulley assembly 3. In order to improve the clamping effect of the clamps, clamping arms are symmetrically installed on both sides of the mounting seat. The top of the clamping arms extends inward to form hook fingers for hooking on the clamping seat. The bottom of the clamping arms extends outward to form clamping handles for cooperating with the changing mechanism 4. The middle of the two clamping arms passes through and is hinged to the mounting seat through a hinge shaft. A torsion spring is sleeved between the two clamping arms and the mounting seat. The torsion spring drives the two sets of clamping arms to always face inward in a grasping position.

[0033] The above description in this specification is merely an illustrative example of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the specific embodiments described or adopt similar methods to replace them, as long as they do not deviate from the content of this specification or exceed the scope defined in the claims, they shall all fall within the protection scope of this invention.

Claims

1. A presser foot device applied to the color-changing mechanism of a multi-color tape on an embroidery machine, characterized in that: The device includes a fixed seat (71) mounted on the pulley assembly (3), a sliding assembly (72) mounted on the fixed seat (71), and a pressure rod assembly (73) mounted on the sliding assembly (72). The pressure foot device (7) also includes a drive assembly (74) mounted on the needle bar mechanism (2) for driving the sliding assembly (72) to move up and down. The drive assembly (74) is engaged with the sliding assembly (72). The drive assembly (74) includes a clamping block (741) mounted on the needle bar mechanism (2) and a locking block (742) mounted on the clamping block (741) for connecting the sliding assembly (72). The sliding assembly (72) includes a slide (721) mounted on the fixed base (71), a slider (722) mounted on the slide (721), and a locking block (723) mounted on the top of the slider (722). The locking block (723) has a slot (724) facing forward for engaging the locking block (742). The locking block (742) engages radially into the slot (724) to complete the engagement.

2. The presser foot device applied to the color-changing mechanism of a multi-color tape in an embroidery machine according to claim 1, characterized in that: The side of the bayonet (724) facing the card block (742) is also provided with a guide slope to facilitate the card block (742) to be inserted into the bayonet (724).

3. The presser foot device applied to the color-changing mechanism of a multi-color tape in an embroidery machine according to claim 2, characterized in that: The pressure rod assembly (73) is installed at the bottom of the slider (722) and includes a connecting block (731) for connecting to the slider (722) and a pressure head (732) movably installed on the connecting block (731). The pressure head (732) is provided with an elongated hole (733) for easy adjustment of the installation position. The pressure head (732) is fastened to the connecting block (731) by bolts passing through the elongated hole (733).

4. The presser foot device applied to the color-changing mechanism of a multi-color tape in an embroidery machine according to claim 1, characterized in that: The fixed base (71) is also equipped with a limiting component (75) for restricting the free sliding of the slider (722). The limiting component (75) includes a limiting seat (751) installed on the outside of the fixed base (71) and a limiting block (752) threadedly connected in the limiting seat (751). The limiting block (752) extends toward the snap-fit ​​block (723) and abuts against the snap-fit ​​block (723).

5. The presser foot device applied to the color-changing mechanism of a multi-color tape in an embroidery machine according to claim 4, characterized in that: The limiting block (752) is hollow inside, and one end of the limiting block (752) is provided with a through-hole for connecting the inside and outside. The limiting block (752) is provided with a steel ball (753) and a return spring (754). The diameter of the steel ball (753) is larger than the diameter of the through-hole. The return spring (754) pushes the steel ball (753) against the through-hole and a part of the steel column extends outward.

6. The presser foot device applied to the color-changing mechanism of a multi-color tape in an embroidery machine according to claim 5, characterized in that: The snap-fit ​​block (723) is provided with a limiting groove (725) for cooperating with the steel ball (753), and the steel ball (753) abuts against the limiting groove (725).

7. The presser foot device applied to the color-changing mechanism of a multi-color tape in an embroidery machine according to claim 4, characterized in that: The limiting block (752) and the limiting seat (751) are adjustable. The end of the limiting block (752) away from the opening is provided with a hexagonal groove for rotating the limiting block (752). The limiting seat (751) is provided with an adjustment hole (755) that communicates with the hexagonal groove.

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