Belt shearing mechanism applied to multi-color disc belt color changing mechanism of embroidery machine

Abstract

A belt shearing mechanism applied to a multi-color disc belt color changing mechanism of an embroidery machine comprises a fixed plate installed on a machine box beam, a movable plate installed on the fixed plate and a shear assembly installed on the movable plate, and a driving air rod used for driving the movable plate and the shear assembly to move is installed on the fixed plate. When the telescopic rod stretches out downwards, the movable plate descends due to the gravity effect so as to drive the scissor assembly to descend, the movable plate stops descending after abutting against the limiting assembly, the telescopic rod continues to stretch out downwards, at the moment, the horizontal guide mechanism installed at the bottom of the movable plate stops descending, and the telescopic rod pushes the horizontal guide mechanism to move forwards through a hinge rod; according to the ribbon cutting mechanism, the scissor assembly is driven by the driving air rod, so that the scissor assembly stretches out forwards, the scissor assembly can descend and stretch out through the driving air rod, the scissor assembly can cut off the ribbon at the position closer to the ribbon coiling rope wheel assembly, waste of the ribbon is reduced, cost is saved, and the ribbon cutting mechanism is simple in structure, convenient to maintain and lower in part cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of embroidery machine equipment, specifically relating to a tape cutting mechanism 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 heads into the sewing station, and a mechanism for driving the color-changing heads to move... The device includes a left-right moving mechanism that moves the color-changing head to a position directly opposite the sewing station, and a cutting mechanism that cuts the ribbon after the embroidery sewing is completed. 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 changing the ribbon. After sewing is completed, a pneumatic rod pushes the cutting mechanism to approach the ribbon and cut it. The ribbon cutting mechanism can automatically cut the ribbon, thus facilitating ribbon replacement and eliminating the need for manual operation.

[0003] However, in the above structure, the sewing direction needs to be changed constantly during the sewing work. Therefore, the color-changing head also needs to change its orientation toward the belt conveyor mechanism. In order to ensure the sewing work can proceed and to prevent the cutting mechanism from obstructing the turning of the belt conveyor mechanism, the cutting mechanism needs to be kept at a certain distance from the color-changing head. This will result in the cut portion of the ribbon being too long, leading to waste and hindering cost savings.

[0004] Alternatively, two sets of pneumatic rods can be used to drive the shearing mechanism to achieve two sets of actions, thereby bringing the scissors closer to the color-changing mechanism and reducing ribbon waste. However, this would increase the complexity of the equipment structure, increase the cost of parts, and make maintenance more difficult. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a tape cutting mechanism applied to the color changing mechanism of the multi-color tape in an embroidery machine.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A tape-cutting mechanism applied to the color-changing mechanism of a multi-color tape in an embroidery machine includes a fixed plate mounted on a machine housing beam, a movable plate mounted on the fixed plate, and a scissor assembly mounted on the movable plate. The fixed plate also has a drive air rod for moving the movable plate and the scissor assembly. The fixed plate is provided with a vertical guide mechanism for the movable plate to slide. The bottom of the movable plate extends forward and is equipped with a horizontal guide mechanism. The scissor assembly is mounted on the horizontal guide mechanism. The fixed plate also has a limiting component for limiting the sliding stroke of the movable plate. Simultaneously, the movable plate is mounted on the telescopic rod of the drive air rod via a connecting piece and moves up and down with the telescopic rod. The telescopic rod is connected to the horizontal guide mechanism via a hinged rod, which is tilted forward relative to the telescopic rod.

[0008] Furthermore, the end of the telescopic rod is provided with a rectangular block, the top of the hinge rod is hinged to the rectangular block, and the bottom of the connector abuts against the top of the rectangular block.

[0009] Furthermore, a spring is connected between the rectangular block and the top of the pneumatic rod to increase the horizontal force of the horizontal guide mechanism.

[0010] In this utility model, the vertical guide mechanism includes a vertical guide rail installed on the back of the movable plate and a vertical slider installed on the fixed plate. The vertical slider is provided with a groove for cooperating with the vertical guide rail, and the movable plate slides on the groove through the vertical guide rail.

[0011] Furthermore, the vertical slider is provided in two sets, with the two sets of vertical sliders located above and below the fixed plate, respectively.

[0012] In this utility model, the horizontal guide mechanism includes a horizontal guide rail horizontally disposed at the bottom of the movable plate and a horizontal slider slidably fitted on the horizontal guide rail. The horizontal slider has the same mechanism as the vertical slider. The bottom of the hinge rod is hinged to the horizontal slider. The scissor assembly is mounted on the horizontal slider through a connecting plate.

[0013] Furthermore, the bottom of the movable plate is provided with limiting blocks at both ends of the horizontal guide rail to prevent the horizontal slider from disengaging from the horizontal guide rail.

[0014] In this utility model, the limiting component includes an upper limit seat installed above the fixed plate and a lower limit seat installed below the fixed plate. The top and bottom of the movable plate are provided with blocks for abutting against the upper limit seat and the lower limit seat.

[0015] Furthermore, both the upper and lower limit seats are provided with buffer rubber seats to improve the shock absorption effect.

[0016] Furthermore, the upper limit seat and the lower limit seat are provided with elongated holes that allow for adjustment of the distance between them.

[0017] This utility model has the following advantages and beneficial effects:

[0018] When the telescopic rod extends downwards, the movable plate descends due to gravity, which in turn lowers the scissor assembly. The descent stops when the movable plate hits the limit assembly, and then the telescopic rod continues to extend downwards. At this point, the horizontal guide mechanism installed at the bottom of the movable plate cannot continue to descend. Therefore, the telescopic rod pushes the horizontal guide mechanism forward through the hinge rod, thereby extending the scissor assembly forward. A set of drive pneumatic rods enables the scissor assembly to perform both descent and extension actions, allowing the scissor assembly to get closer to the coiled rope pulley assembly to cut the ribbon, reducing ribbon waste and saving costs. Moreover, this ribbon cutting mechanism has a simple structure, is easy to maintain, and has lower parts costs. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic diagram of the color-changing mechanism in this embodiment;

[0021] Figure 2 This is a side view of the color-changing mechanism in this embodiment;

[0022] Figure 3 This is a schematic diagram of the tape-cutting mechanism in this embodiment;

[0023] Figure 4 for Figure 3 Enlarged view of region A in the middle;

[0024] Figure 5 This is an anatomical diagram of the tape-cutting mechanism in this embodiment;

[0025] Figure 6 for Figure 5 A magnified view of region B in the middle. Detailed Implementation

[0026] 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.

[0027] like Figures 1 to 6As shown, this embodiment discloses a tape-cutting mechanism 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 thread output, a tape pulley assembly 3 installed at the bottom of the needle bar mechanism 2 for sewing, a changing mechanism 5 installed behind the needle bar mechanism 2 for replacing the sewing mechanism 3, and a tape-cutting mechanism 4 installed at the bottom of the machine housing beam 1 for cutting the tape before changing the sewing mechanism 3. The changing mechanism also includes a left-right moving mechanism 6 located between the needle bar mechanism 2 and the changing mechanism 5. The device is equipped with multiple spare reel pulley assemblies 3 loaded with different colored ribbons. The changing mechanism 5 disassembles the reel pulley assembly 3 from the needle bar mechanism 2 and sends it to the left and right moving mechanism 6 for hanging. Then, the left and right moving mechanism 6 moves the spare reel pulley assembly 3 to be used between the changing mechanism 5 and the needle bar mechanism 2. The changing mechanism 5 sends the spare reel pulley assembly 3 to the needle bar mechanism 2 for installation, thereby realizing the changing. Specifically, the top of the reel pulley assembly 3 is provided with a clamp, and 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 clamp.

[0028] In this embodiment, the shearing mechanism 4 includes a fixed plate 41 for mounting and fixing on the chassis beam 1, a movable plate 42 mounted on the fixed plate 41, and a shear assembly 43 mounted on the movable plate 42. The fixed plate 41 is also equipped with a drive air rod 44 for driving the movable plate 42 and the shear assembly 43 to move. The fixed plate 41 is provided with a vertical guide mechanism 45 for the movable plate 42 to slide. The bottom of the movable plate 42 extends forward to form an L-shaped structure. A horizontal guide mechanism 46 for mounting the shear assembly 43 is provided at the bottom horizontal position of the movable plate 42. The fixed plate 41 is also provided with a limiting component 47 for limiting the sliding stroke of the movable plate 42. Simultaneously, the movable plate 42 is supported by a connecting member 421 on the telescopic rod 441 of the drive air rod 44. The telescopic rod 441 moves up and down with the telescopic rod 441, which is connected to the horizontal guide mechanism 46 via a hinge rod 48. In order for the hinge rod 48 to convert the vertical movement of the telescopic rod 441 into the horizontal movement of the horizontal guide mechanism 46, the hinge rod 48 is offset forward at a certain angle relative to the telescopic rod 441. When the telescopic rod 441 extends downward, the movable plate 42 descends due to gravity, thereby driving the scissor assembly 43 to descend. When the movable plate 42 stops descending after hitting the limiting component 47, the telescopic rod 441 continues to extend downward. At this time, the horizontal guide mechanism 46 installed at the bottom of the movable plate 42 cannot continue to descend. Therefore, the telescopic rod 441 will push the horizontal guide mechanism 46 forward through the hinge rod 48, thereby causing the scissor assembly 43 to extend forward.

[0029] A set of drive pneumatic rods 44 enables the scissor assembly 43 to perform two actions: lowering and extending. This allows the scissor assembly 43 to be closer to the pulley assembly 3 to cut the ribbon, reducing ribbon waste and saving costs. Moreover, this ribbon cutting mechanism 4 has a simple structure, is easy to maintain, and has lower parts costs.

[0030] Furthermore, as the telescopic rod 441 retracts upward, it simultaneously drives the scissor assembly 43 to retract backward via the hinge rod 48. Subsequently, during its ascent, the telescopic rod 441 abuts against the connecting piece 421, thereby causing the movable plate 42 to rise upward. Preferably, to better coordinate the telescopic rod 441 with the hinge rod 48 and the connecting block, a rectangular block 442 is provided at the end of the telescopic rod 441. The top of the hinge rod 48 is hinged to the side of the rectangular block 442, and the bottom of the connecting piece 421 abuts against the top surface of the rectangular block 442. Preferably, to ensure that the hinge rod 48 can preferentially drive the scissor assembly 43 to retract backward when the telescopic rod 441 retracts upward, a spring is connected between the rectangular block 442 and the top of the pneumatic rod. This spring is not shown in the accompanying drawings. The spring is used to increase the horizontal force of the horizontal guide mechanism 46, thereby causing the scissor assembly 43 to retract faster.

[0031] Specifically, the vertical guide mechanism 45 includes a vertical guide rail 451 mounted on the back of the movable plate 42 and a vertical slider 452 mounted on the fixed plate 41. The vertical slider 452 is provided with a groove 453 for cooperating with the vertical guide rail 451. The movable plate 42 slides up and down in the groove 453 through the vertical guide rail 451. Preferably, in order to make the movable plate 42 slide more smoothly, there are two sets of vertical sliders 452. The two sets of vertical sliders 452 are located above and below the fixed plate 41, respectively. By setting the vertical guide mechanism 45 between the fixed plate 41 and the movable plate 42, the movable plate 42 slides more smoothly and will not be blocked. Therefore, it can drive the scissor assembly 43 to descend by its own gravity.

[0032] Furthermore, the horizontal guide mechanism 46 includes a horizontal guide rail 461 horizontally disposed at the bottom of the movable plate 42 and a horizontal slider 462 slidably fitted on the horizontal guide rail 461. The horizontal slider 462 has the same mechanism as the vertical slider 452. The bottom of the hinge rod 48 is hinged to the horizontal slider 462. The scissor assembly 43 is mounted on the horizontal slider 462 through a connecting plate. By setting a horizontal guide assembly between the scissor assembly 43 and the movable plate 42, the scissor assembly 43 can extend a certain distance outward relative to the movable plate 42, thereby bringing the scissor assembly 43 closer to the coiled rope pulley assembly 3. Preferably, the bottom of the movable plate 42 is provided with limiting blocks 422 at both ends of the horizontal guide rail 461 to prevent the horizontal slider 462 from disengaging from the horizontal guide rail 461.

[0033] In this embodiment, the limiting component 47 includes an upper limit seat 471 installed above the fixed plate 41 and a lower limit seat 472 installed below the fixed plate 41. In order to cooperate with the limiting component 47, the top and bottom of the movable plate 42 are provided with blocks 423 for abutting against the upper limit seat 471 and the lower limit seat 472. In order to prevent the movable plate 42 from generating a huge impact when it stops, the upper limit seat 471 and the lower limit seat 472 are provided with buffer rubber seats 473 for improving the shock absorption effect.

[0034] Furthermore, in order to facilitate the adjustment of the movable stroke of the fixing plate 41, the upper limit seat 471 and the lower limit seat 472 are provided with adjustable elongated holes 474. The upper limit seat 471 and the lower limit seat 472 are installed on the fixing plate 41 by bolts passing through the elongated holes 474 and tightening them.

[0035] The specific structure of the scissors assembly 43 described in this embodiment can be found in paragraph 0024 of the manual of an automatic multi-color tape changing embroidery machine disclosed in Chinese Patent Application No. CN202310080272.6, which mentions the scissors and the opening and closing mechanism for driving the scissors to open and close. It will not be described in detail here.

[0036] 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 tape-cutting mechanism applied to the color-changing mechanism of a multi-color tape in an embroidery machine, characterized in that: It includes a fixed plate (41) mounted on the chassis beam (1), a movable plate (42) mounted on the fixed plate (41), and a scissor assembly (43) mounted on the movable plate (42). The fixed plate (41) is also equipped with a drive air rod (44) for driving the movable plate (42) and the scissor assembly (43) to move. The fixed plate (41) is provided with a vertical guide mechanism (45) for the movable plate (42) to slide. The bottom of the movable plate (42) extends forward and is equipped with a horizontal guide mechanism (46). The scissor assembly (43) is mounted on the horizontal guide mechanism (46). The fixed plate (41) is also provided with a limiting assembly (47) for limiting the sliding stroke of the movable plate (42). The movable plate (42) is mounted on the telescopic rod (441) of the drive air rod (44) via a connector (421) and moves with the telescopic rod (441). The telescopic rod (441) is connected to the horizontal guide mechanism (46) via a hinge rod (48). The hinge rod (48) is tilted forward relative to the telescopic rod (441).

2. The tape-cutting mechanism applied to the color-changing mechanism of a multi-color tape in an embroidery machine according to claim 1, characterized in that: The telescopic rod (441) has a rectangular block (442) at its end, the top of the hinge rod (48) is hinged to the rectangular block (442), and the bottom of the connector (421) abuts against the top of the rectangular block (442).

3. The tape-cutting mechanism applied to the color-changing mechanism of a multi-color tape in an embroidery machine according to claim 2, characterized in that: A spring is connected between the rectangular block (442) and the top of the pneumatic rod to increase the horizontal force of the horizontal guide mechanism (46).

4. The tape-cutting mechanism applied to the color-changing mechanism of a multi-color tape in an embroidery machine according to claim 1, characterized in that: The vertical guide mechanism (45) includes a vertical guide rail (451) mounted on the back of the movable plate (42) and a vertical slider (452) mounted on the fixed plate (41). The vertical slider (452) is provided with a groove (453) for cooperating with the vertical guide rail (451). The movable plate (42) slides on the groove (453) through the vertical guide rail (451).

5. The tape-cutting mechanism applied to the color-changing mechanism of a multi-color tape in an embroidery machine according to claim 4, characterized in that: The vertical slider (452) is provided in two sets, and the two sets of vertical sliders (452) are located above and below the fixed plate (41) respectively.

6. The tape-cutting mechanism applied to the color-changing mechanism of a multi-color tape in an embroidery machine according to claim 1, characterized in that: The horizontal guide mechanism (46) includes a horizontal guide rail (461) horizontally disposed at the bottom of the movable plate (42) and a horizontal slider (462) slidably fitted on the horizontal guide rail (461). The horizontal slider (462) has the same mechanism as the vertical slider (452). The bottom of the hinge rod (48) is hinged to the horizontal slider (462). The scissor assembly (43) is mounted on the horizontal slider (462) through a connecting plate.

7. The tape-cutting mechanism applied to the color-changing mechanism of a multi-color tape in an embroidery machine according to claim 6, characterized in that: The bottom of the movable plate (42) is provided with limiting blocks (422) at both ends of the horizontal guide rail (461) to prevent the horizontal slider (462) from disengaging from the horizontal guide rail (461).

8. The tape-cutting mechanism applied to the color-changing mechanism of a multi-color tape in an embroidery machine according to claim 1, characterized in that: The limiting component (47) includes an upper limit seat (471) installed above the fixed plate (41) and a lower limit seat (472) installed below the fixed plate (41). The top and bottom of the movable plate (42) are provided with blocks (423) for abutting against the upper limit seat (471) and the lower limit seat (472).

9. The tape-cutting mechanism applied to the color-changing mechanism of a multi-color tape in an embroidery machine according to claim 8, characterized in that: Both the upper limit seat (471) and the lower limit seat (472) are provided with buffer rubber seats (473) for improving the shock absorption effect.

10. The tape-cutting mechanism applied to the color-changing mechanism of a multi-color tape in an embroidery machine according to claim 9, characterized in that: The upper limit seat (471) and the lower limit seat (472) are provided with elongated holes (474) that allow for adjustment of the distance between them.

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