Presser foot mechanism for a pattern machine

Abstract

The utility model relates to the technical field of pattern machine, disclose a presser foot mechanism of pattern machine, including the pressure frame, the center of pressure frame is established and has the placing groove, the placing groove is connected with the supporting plate in the clamping, the center of supporting plate is established and has the symbol slot, the upper side of pressure frame is installed with a pair of positioning assembly for the supporting plate of pressure hold, the upper side of pressure frame is fixedly installed with the circular slide rail, the upper side of the slide table of circular slide rail is fixedly installed with the bevel gear ring, the upper side of bevel gear ring is fixedly installed with the torsion seat, one end of torsion seat rotatory installation has the swing arm, the other end of swing arm is fixedly installed with the universal ball, the universal ball is located at the center of symbol slot, the upper side of pressure frame is installed for the drive assembly of rotating bevel gear ring. The utility model discloses through the pressure holding mode of positioning assembly, can replace the supporting plate quickly, avoids the trouble of disassembly bolt, the cooperation of drive assembly and circular slide rail etc. Structure can prevent the displacement of cloth along with needle, replaces the mode of hand pressing, eliminates the risk of hurting hand, and does not influence the wiring path of needle.

Description

Technical Field

[0001] This utility model relates to the field of pattern making machine technology, specifically to the presser foot mechanism of a pattern making machine. Background Technology

[0002] As a computer-controlled sewing machine, the pattern sewing machine is capable of sewing complex patterns.

[0003] To ensure the accuracy of the placement of fabric (such as labels) during sewing, the pattern sewing machine uses a push-pull electromagnet to raise and lower the pressure frame. The pressure frame has a patterned groove inside that corresponds to the shape of the fabric. When in use, the pressure frame is used to press down the bottom base material, and the fabric is placed in the patterned groove to start the pattern sewing.

[0004] However, for sewing fabrics of different shapes, it is necessary to replace the presser frame with the corresponding pattern groove shape by disassembling and assembling bolts, which is a rather cumbersome operation. In addition, the fabric will move slightly with the needle during the sewing process, resulting in the pattern sewing line not being precise enough. Manually pressing the center of the fabric also poses a certain risk of hand injury.

[0005] Therefore, in order to solve the above problems, a presser foot mechanism for a pattern making machine is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a presser foot mechanism for a pattern sewing machine, which facilitates the sewing of fabrics of different shapes and avoids manual pressing operations, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: The presser foot mechanism of the pattern making machine includes a presser frame. A placement groove is formed at the center of the presser frame, and a support plate is engaged within the placement groove. A shaped groove is formed at the center of the support plate. A pair of positioning components for pressing the support plate are installed on the upper side of the presser frame. A circular slide rail is fixedly installed on the upper side of the slide platform of the circular slide rail. A bevel gear ring is fixedly installed on the upper side of the bevel gear ring. A torque seat is fixedly installed on the upper side of the bevel gear ring. One end of a swing arm is rotatably mounted on the torque seat. A universal ball is fixedly installed on the other end of the swing arm, and the universal ball is located at the center of the shaped groove. A drive component for rotating the bevel gear ring is installed on the upper side of the presser frame.

[0008] Specifically, the top of the left and right sides of the tray is integrally formed with flanges, and the top of the left and right sides of the placement groove is provided with grooves for engaging the flanges.

[0009] Specifically, the positioning assembly includes a sleeve, a guide screw, and an elastic pressure plate. A pair of guide screws are screwed onto the upper side of the pressure frame. Each guide screw is fitted with a sleeve and an elastic pressure plate. A positioning groove is provided on the top of each flange. One end of the elastic pressure plate is located between the nut and the sleeve of the guide screw. In use, the other end of the elastic pressure plate is engaged with the positioning groove on the same side.

[0010] Specifically, the drive assembly includes a protective cover, a servo motor, and a bevel gear. The servo motor is fixedly mounted on the upper side of the pressure frame via a base. The bevel gear is fixedly mounted on the output end of the servo motor. The bevel gear meshes with a bevel gear ring. A protective cover for shielding the servo motor and the bevel gear is fixedly mounted on the upper side of the pressure frame.

[0011] Compared with the prior art, the beneficial effects of this utility model are: By using the pressing method of the positioning components, the tray with the corresponding shaped groove can be quickly replaced, avoiding the tedious operation of traditional bolt removal and installation. The combination of the drive assembly, circular slide rail, bevel gear ring, and torque seat enables the swing arm to move in a circular motion and swing to press, pressing the omnidirectional ball into the center of the fabric. This prevents the fabric from shifting with the needle, replacing the hand pressing method, eliminating the risk of hand injury, and does not affect the needle's stitch path. Attached Figure Description

[0012] Figure 1 This is a top view illustrating the structure of this utility model; Figure 2 for Figure 1 A schematic cross-sectional view of the structure at the positioning component in the AA direction; Figure 3 for Figure 1 A schematic cross-sectional view of the structure at the CC-direction drive component; Figure 4 for Figure 1 A schematic cross-sectional view of the structure at the BB-to-gloss ball joint.

[0013] In the diagram: 1. Pressure frame, 2. Drive assembly, 21. Protective cover, 22. Servo motor, 23. Bevel gear, 3. Positioning assembly, 31. Sleeve, 32. Smooth rod screw, 33. Elastic pressure plate, 4. Bevel gear ring, 5. Torque seat, 6. Swing arm, 7. Support plate, 8. Shaped groove, 9. Universal ball, 10. Circular slide rail. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Example content: Please see Figure 1 and Figure 4 A presser foot mechanism for a pattern making machine is provided, including a presser frame 1. The presser frame 1 is an existing component integrally formed from a rectangular plate and two rear connecting ears, and each connecting ear has a connecting hole. The presser frame 1 can be installed on the lifting component (generally a push-pull electromagnet) of the pattern making machine by means of screw connection.

[0016] The center of the pressure frame 1 is provided with a placement groove, and a tray 7 is snapped into the placement groove. The center of the tray 7 is provided with a shaped groove 8, which can accommodate multiple trays 7 with different shaped grooves 8. The shaped groove 8 is used to match different shaped fabrics to improve the accuracy of fabric placement.

[0017] A pair of positioning components 3 for pressing the pallet 7 are installed on the upper side of the pressure frame 1. The positioning components 3 are used to press the pallet 7 to ensure that it will not loosen or shift during operation. The positioning components 3 are also designed to facilitate the replacement of pallets 7 with specific shaped grooves 8.

[0018] A circular slide rail 10 is fixedly installed on the upper side of the pressure frame 1. A bevel gear ring 4 is fixedly installed on the upper side of the slide platform of the circular slide rail 10. A torque seat 5 is fixedly installed on the upper side of the bevel gear ring 4. One end of the swing arm 6 is rotatably installed on the torque seat 5. A universal ball 9 is fixedly installed on the other end of the swing arm 6. The universal ball 9 is located at the center of the shaped groove 8. The torque seat 5 provides a downward swinging force to the swing arm 6, while the universal ball 9 is used to press the center of the fabric. The bevel gear ring 4 can move circumferentially along the circular slide rail 10, thereby adjusting the position of the swing arm 6.

[0019] A drive assembly 2 for rotating the bevel gear ring 4 is installed on the upper side of the pressure frame 1. The drive assembly 2 can provide power for the circumferential movement of the bevel gear ring 4.

[0020] Among them, the torsion seat 5 is an existing component with a rotating seat, a pin and a torsion spring, used to realize rotational movement and provide a certain rebound force. One end of the swing arm 6 is rotatably assembled with the rotating seat through the pin. The torsion spring is sleeved on the pin, and both ends of the torsion spring are fixedly assembled with the rotating seat and the swing arm 6 respectively, providing the swing arm 6 with a downward swinging force.

[0021] The circular slide rail 10 is an existing component with a circular track and four slide tables, which are fixedly assembled with the bevel gear ring 4 to reduce the resistance of the bevel gear ring 4 in circumferential rotation.

[0022] The omnidirectional ball 9 is an existing component consisting of a ball seat and a ball bearing. When the fabric is pressed, it is not affected by the circumferential movement of the swing arm 6, thus preventing the fabric from twisting with the swing arm 6 and improving the accuracy and efficiency of the operation.

[0023] Please see Figure 2 The structure of tray 7: The top of the left and right sides of the tray 7 is integrally formed with flanges, and the top of the left and right sides of the placement slot is provided with grooves for engaging the flanges. The engagement of the flanges and grooves can quickly install the tray 7, which can be accurately placed and easily disassembled.

[0024] Please see Figure 2 The structure of positioning component 3: The positioning component 3 includes a sleeve 31, a smooth screw 32, and an elastic pressure plate 33. A pair of smooth screws 32 are screwed onto the upper side of the pressure frame 1. Each smooth screw 32 is fitted with a sleeve 31 and an elastic pressure plate 33. The top of each flange is provided with a positioning groove. One end of the elastic pressure plate 33 is located between the nut of the smooth screw 32 and the sleeve 31. The sleeve 31 supports the elastic pressure plate 33, which is a component made of a flexible metal plate bent into shape. The elastic pressure plate 33 can swing around the smooth screw 32.

[0025] When in use, the other end of the elastic pressure plate 33 is engaged with the positioning groove on the same side to press and position the placed tray 7, preventing the tray 7 from falling out of the anti-slip groove on its own; in addition, when disassembling the tray 7, the elastic pressure plate 33 needs to be lifted first and swung onto the pressure frame 1.

[0026] Please see Figure 3 The structure of driver component 2: The drive assembly 2 includes a protective cover 21, a servo motor 22, and a bevel gear 23. The servo motor 22 is fixedly mounted on the upper side of the pressure frame 1 via a base. The servo motor 22 is horizontally positioned. The bevel gear 23 is fixedly mounted on the output end of the servo motor 22. The bevel gear 23 meshes with the bevel gear ring 4. The protective cover 21 for shielding the servo motor 22 and the bevel gear 23 is fixedly mounted on the upper side of the pressure frame 1.

[0027] When the servo motor 22 is working, it can rotate the bevel gear 23, thereby driving the meshing bevel gear ring 4; the protective cover 21 can prevent dust, debris or other external factors from damaging the internal components, and can also prevent the operator from accidentally touching them.

[0028] The servo motor 22 is electrically connected to the computer of the pattern making machine. The servo motor 22 is preferably a servo motor with an encoder, which facilitates precise control of the rotation angle of the swing arm 6 to avoid the moving needle.

[0029] The working principle of this embodiment: Preparation: First, replace the tray 7 with the corresponding shaped groove, put the tray 7 into the placement groove, and position it by engaging the flange with the groove. Then, swing the elastic pressure plate 33 in the positioning component 3 back, engage it with the positioning groove, and press down the tray 7 for easy replacement.

[0030] When placing the fabric: The pattern machine presses the base material onto the platform using a push-pull electromagnet. With the torsion seat 5 as the center, the swing arm 6 is manually raised to place the fabric in the patterned groove. After releasing the swing arm 6, the universal ball 9 presses down to hold the center of the fabric.

[0031] During sewing: the needle moves along the trajectory pre-selected by the computer, while the drive component 2 rotates the bevel gear ring 4, and the torque seat 5 and swing arm 6 set on the bevel gear ring 4, to prevent the position of the swing arm 6 from interfering with the needle's path.

[0032] After sewing is completed: the entire fabric can be removed by lifting the presser foot mechanism of the pattern machine.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A presser foot mechanism for a pattern-making machine, comprising a presser frame (1), characterized in that: The center of the pressure frame (1) is provided with a placement groove, and a tray (7) is snapped into the placement groove. The center of the tray (7) is provided with a shaped groove (8). A pair of positioning components (3) for pressing the tray (7) are installed on the upper side of the pressure frame (1). A circular slide rail (10) is fixedly installed on the upper side of the pressure frame (1). A bevel gear ring (4) is fixedly installed on the upper side of the slide platform of the circular slide rail (10). A torque seat (5) is fixedly installed on the upper side of the bevel gear ring (4). One end of a swing arm (6) is rotatably installed on the torque seat (5). A universal ball (9) is fixedly installed on the other end of the swing arm (6). The universal ball (9) is located at the center of the shaped groove (8). A drive assembly (2) for rotating the bevel gear ring (4) is installed on the upper side of the pressure frame (1).

2. The presser foot mechanism of the pattern machine according to claim 1, characterized in that: The top of the left and right sides of the tray (7) is integrally formed with flanges, and the top of the left and right sides of the placement groove is provided with grooves for engaging the flanges.

3. The presser foot mechanism of the pattern machine according to claim 2, characterized in that: The positioning component (3) includes a sleeve (31), a smooth screw (32), and an elastic pressure plate (33). A pair of smooth screws (32) are screwed onto the upper side of the pressure frame (1). Each smooth screw (32) is fitted with a sleeve (31) and an elastic pressure plate (33). The top of each flange is provided with a positioning groove. One end of the elastic pressure plate (33) is located between the nut of the smooth screw (32) and the sleeve (31). When in use, the other end of the elastic pressure plate (33) is engaged with the positioning groove on the same side.

4. The presser foot mechanism of the pattern machine according to claim 1, characterized by: The drive assembly (2) includes a protective cover (21), a servo motor (22) and a bevel gear (23). The servo motor (22) is fixedly mounted on the upper side of the pressure frame (1) via a base. The bevel gear (23) is fixedly mounted on the output end of the servo motor (22). The bevel gear (23) meshes with the bevel gear ring (4). The protective cover (21) for shielding the servo motor (22) and the bevel gear (23) is fixedly mounted on the upper side of the pressure frame (1).

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