A sewing machine with cutting function and its using method

Abstract

This application relates to a sewing machine with a cutting function, belonging to the field of sewing machines. It includes a frame, a sewing mechanism, a worktable, a cutting mechanism, and a transmission mechanism. The frame is mounted on the worktable. The sewing mechanism includes a housing, a drive rod, and a sewing needle. The housing is fixed to the frame, and the drive rod is slidably connected to the housing. A drive mechanism that reciprocates the drive rod is installed inside the housing. The sewing needle is mounted on the drive rod. The cutting mechanism includes a driven rod, a sliding table, and a cutter holder. The driven rod is slidably connected to the housing and parallel to the drive rod. The sliding table is slidably connected to the housing, and the cutter holder is mounted on the sliding table. The driven rod rests on the sliding table. The transmission mechanism is mounted on the housing and connects the drive rod and the driven rod. This application provides the advantage of facilitating the user's adjustment of the fabric position.

Description

Technical Field

[0001] This application relates to the field of sewing machines, and more particularly to a sewing machine with a cutting function and a method of using it. Background Technology

[0002] Industrial sewing machines are used to sew fabrics or leathers together and are widely used in the textile and garment industries. During mass production of textiles, it is necessary to neatly cut the edges of the fabric. Therefore, industrial sewing machines are equipped with cutters. As the operator pulls the fabric through the sewing needle, the fabric simultaneously passes through the cutter, which neatly cuts the edges, improving production efficiency.

[0003] The sewing machine includes a frame, a sewing mechanism, a worktable, and a cutting mechanism. The worktable is horizontally positioned, and the frame is mounted on the worktable. The sewing mechanism includes a drive rod and a sewing needle. The drive rod is vertically positioned and slidably connected to the frame. A drive mechanism is connected to the drive rod, which is used to mount the sewing needle and move vertically back and forth. The cutting mechanism includes a drive mechanism and a cutting tool. The drive mechanism can drive the cutting tool to move back and forth in the vertical direction, thereby causing the cutting tool to fall quickly onto the worktable and cut the edge of the fabric.

[0004] The aforementioned technical solutions have the following drawbacks: during textile production, users need to move the fabric and adjust the sewing position multiple times. When users need to stop the sewing and cutting mechanisms and adjust the fabric position, they need to turn off the drive mechanisms of the sewing and cutting mechanisms in sequence, which is inconvenient. Summary of the Invention

[0005] To facilitate users in adjusting the fabric position, this application provides a sewing machine with a cutting function and its usage method.

[0006] The sewing machine with cutting function provided in this application adopts the following technical solution:

[0007] A sewing machine with a cutting function includes a frame, a sewing mechanism, a worktable, a cutting mechanism, and a transmission mechanism. The frame is mounted on the worktable. The sewing mechanism includes a housing, a drive rod, and a sewing needle. The housing is fixed to the frame, and the drive rod is slidably connected to the housing. A drive mechanism that drives the drive rod to reciprocate is installed inside the housing. The sewing needle is mounted on the drive rod. The cutting mechanism includes a driven rod, a sliding table, and a cutter holder. The driven rod is slidably connected to the housing and is parallel to the drive rod. The sliding table is slidably connected to the housing, and the cutter holder is mounted on the sliding table. The driven rod rests on the sliding table. The transmission mechanism is mounted on the housing and connects the drive rod and the driven rod.

[0008] By adopting the above technical solution, a sewing mechanism is set on the frame, enabling the drive rod to move the sewing needle back and forth above the worktable, thereby achieving the effect of sewing the fabric on the worktable. A cutting mechanism is set on the housing, allowing the transmission mechanism to be connected between the drive rod and the driven rod, so that the drive rod can drive the sliding table and the knife holder to move vertically back and forth. When the user needs to move the fabric and reopen the sewing, the user needs to keep the sewing thread still. At this time, the drive rod and the driven rod remain still, thereby stopping the knife holder from moving. This reduces the chance of the knife holder continuing to move and damaging the fabric. The user does not need to turn off the drive mechanism of the cutting mechanism, which reduces the number of operation steps and makes it convenient for the user to adjust the position of the fabric.

[0009] Optionally, the transmission mechanism includes a button, a connecting cylinder, and a slide rod. The connecting cylinder is slidably connected to the housing and is perpendicular to the drive rod. The slide rod is slidably connected to the driven rod and is perpendicular to the driven rod. One end of the slide rod is slidably connected to the connecting cylinder, and the other end is detachably connected to the drive rod. The button is located on the end of the connecting cylinder outside the housing.

[0010] By adopting the above technical solution, a connecting cylinder is provided on the housing, which is slidably connected to the slide rod. When the drive rod and driven rod move vertically and perform sewing and cutting work, the connecting cylinder can continue to be connected to the slide rod. When the sewing mechanism and the cutting mechanism are in operation, the user can pull the button to disengage the drive rod and driven rod.

[0011] Optionally, the drive rod is provided with a friction element one, and the slide rod is provided with a friction element two at the end away from the connecting cylinder, with the friction element one and the friction element two in frictional connection.

[0012] By adopting the above technical solution, and by making the driving rod and the driven rod connected by friction, when the relative positions of the driving rod and the driven rod shift, friction element one and friction element two can continue to abut and be connected by friction. When friction element two abuts against friction element one through the slide rod, the driving rod and the driven rod are immediately connected, resulting in less vibration and noise.

[0013] Optionally, the driven rod and the sliding table abut against each other, and a return spring is provided on the sliding table. One end of the return spring is connected to the sliding table, and the other end is connected to the housing. The return spring ensures that the sliding table always abuts against the end of the driven rod.

[0014] By adopting the above technical solution, the driven rod abuts against the sliding table, allowing the sliding table to be pushed against the driven rod by the return spring. When the drive rod is disengaged from the driven rod, the sliding table moves upward by the return spring. At this time, the sliding table can push the driven rod, causing the driven rod to move upward. Thus, after the cutting mechanism stops operating, a large gap is always maintained between the blade holder and the worktable, making it convenient for the user to move the fabric.

[0015] Optionally, the housing is provided with a guide rod, the length direction of which is parallel to the length direction of the sewing needle, and the sliding table is slidably connected to the guide rod.

[0016] By adopting the above technical solution, and by setting a guide rod on the housing, the guide rod can limit the sliding table, thereby reducing the probability of the sliding table deviating from the housing.

[0017] Optionally, the tool holder includes a horizontal frame, a slide cylinder, a fixing bolt, a tool, and a locking block. The horizontal frame is fixed on the sliding table, and the length direction of the horizontal frame is perpendicular to the sewing needle. The locking block is installed at one end of the horizontal frame. The slide cylinder is slidably connected to the horizontal frame. The slide cylinder and the locking block hold the tool. The fixing bolt passes through the slide cylinder and is threaded onto the slide cylinder. The fixing bolt abuts against the horizontal frame.

[0018] By adopting the above technical solution, a horizontal frame is set on the sliding table, and the slide cylinder is fitted on the horizontal frame and slides, so that the slide cylinder and the clamping block can hold the knife and the knife is installed on the sliding table. By setting a hard block on one side of the clamping block, the position of the knife fixed on the horizontal frame can be adjusted, which makes it convenient for the user to adjust the distance between the knife and the sewing needle, and to adjust the distance between the sewing thread and the edge of the fabric.

[0019] Optionally, a scale is provided on the horizontal frame, with the zero mark of the scale indicating the location of the sewing needle.

[0020] By adopting the above technical solution, a scale is set on the horizontal frame to indicate the distance between the sewing thread and the blade, making it convenient for users to adjust the blade position.

[0021] The method of using a sewing machine with a cutting function provided in this application adopts the following technical solution:

[0022] A method for using a sewing machine with a cutting function includes the following steps:

[0023] S1: Lay the fabric flat on the workbench and sew it together using a sewing machine;

[0024] S2: Operate the transmission mechanism to connect the cutting mechanism with the sewing mechanism, thereby enabling the drive mechanism that drives the sewing needle to move vertically to simultaneously drive the knife holder to move.

[0025] S3: After the fabric trimming is completed, the sewing mechanism and the cutting mechanism are disengaged through the transmission mechanism, thereby stopping the blade holder.

[0026] By adopting the above technical solution, the sewing mechanism can sew the fabric by laying the fabric flat on the worktable. By setting a transmission mechanism on the housing, the transmission mechanism can connect the drive rod and the driven rod, thereby driving the blade holder to move back and forth above the worktable. When the user closes the drive mechanism and the sewing needle stops, the blade holder can also remain stationary, thereby reducing the number of operation steps and making it convenient for the user to adjust the position of the fabric.

[0027] In summary, the beneficial technical effects of this application are as follows:

[0028] 1. By setting a sewing mechanism on the frame, the drive mechanism drives the drive rod to move, so that the sewing needle can move back and forth on the worktable. By setting a transmission mechanism on the strip housing, the transmission mechanism can connect the drive rod and the driven rod, so that the drive mechanism can drive the knife holder to move vertically, so that the sewing needle and the knife holder keep synchronized, making it convenient for the user to adjust the position of the fabric.

[0029] 2. By setting a horizontal frame on the sliding table, the slide cylinder can slide on the horizontal frame, which makes it easier for the user to adjust the position of the cutter, so that the cutter can cut the edge of the fabric on the side of the sewing thread;

[0030] 3. By installing a scale on the horizontal frame, the zero mark of the scale is aligned with the position of the sewing needle, making it easier for users to fine-tune the position of the cutter and improving the cutting accuracy. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0032] Figure 2 This is a schematic diagram of the sewing mechanism according to an embodiment of this application.

[0033] Figure 3 This is a schematic diagram of the tool holder structure according to an embodiment of this application. Figure 1 .

[0034] Figure 4 This is a schematic diagram of the tool holder structure according to an embodiment of this application. Figure 2 .

[0035] Figure 5 This is a partial cross-sectional schematic diagram of the housing according to an embodiment of this application.

[0036] Figure 6 This is a schematic diagram of the transmission mechanism according to an embodiment of this application.

[0037] Figure 7 This is a partial cross-sectional schematic diagram of the connecting cylinder according to an embodiment of this application.

[0038] Figure 8 This is a partial cross-sectional schematic diagram of the driven rod according to an embodiment of this application.

[0039] Reference numerals: 1. Frame; 2. Sewing mechanism; 21. Housing; 22. Drive rod; 221. Friction component one; 23. Sewing needle; 3. Worktable; 31. Relief groove; 4. Cutting mechanism; 41. Driven rod; 411. Friction component two; 42. Sliding table; 421. Guide rod; 422. Return spring; 43. Knife holder; 431. Horizontal frame; 432. Slide cylinder; 433. Fixing bolt; 434. Knife; 435. Locking block; 436. Scale; 5. Transmission mechanism; 51. Button; 52. Connecting cylinder; 521. Cavity; 522. Slide groove; 53. Slide rod; 531. Convex circle. Detailed Implementation

[0040] The present application will be further described in detail below with reference to the accompanying drawings.

[0041] This application discloses a sewing machine with a cutting function, referring to... Figure 1 , Figure 2 and Figure 3 The device includes a frame 1, a sewing mechanism 2, and a worktable 3. The worktable 3 is a flat plate structure and is horizontally installed on the ground. The frame 1 is set on the upper surface of the worktable 3. The sewing mechanism 2 is installed on the frame 1 and includes a housing 21, a drive rod 22, and a sewing needle 23. The housing 21 is connected to the frame 1. The drive rod 22 is vertically set and slidably connected to the housing 21. A drive mechanism is set inside the housing 21. One end of the drive rod 22 is inserted into the housing 21, and the other end extends out of the housing 21. The drive mechanism is used to drive the drive rod 22 to move vertically back and forth. The sewing needle 23 is vertically fixed on the end of the drive rod 22 that extends out of the housing 21. The drive mechanism can drive the sewing needle 23 to move vertically back and forth through the drive rod 22, thereby achieving the effect of sewing the fabric placed on the worktable 3.

[0042] Reference Figure 2 , Figure 3 and Figure 4A cutting mechanism 4 is provided on the housing 21, which can cut the fabric placed on the worktable 3. The cutting mechanism 4 includes a driven rod 41, a sliding table 42, and a blade holder 43. The driven rod 41 is slidably connected to the housing 21 and is parallel to the drive rod 22. One end of the driven rod 41 is inserted into the housing 21, and the other end extends out of the housing 21. The sliding table 42 is set on the frame 1 and located on the side of the sewing needle 23. The blade holder 43 is mounted on the surface of the sliding table 42 near the worktable 3. The driven rod 41 can slide vertically and drive the sliding table 42 to move vertically back and forth, thereby enabling the blade holder 43 to move vertically back and forth and cut the fabric. The worktable 3 is provided with a clearance groove 31 for inserting the blade holder 43. When the user moves the fabric on the worktable 3, the blade holder 43 can neatly cut the edges of the fabric when the sewing needle 23 sews the fabric. The cut strips of fabric can fall from the clearance groove 31 to the bottom of the worktable 3, thus keeping the worktable 3 clean. The housing 21 is provided with a transmission mechanism 5, which is used to connect the drive rod 22 and the driven rod 41, so that the drive mechanism can simultaneously drive the sewing needle 23 and the blade holder 43 to move, thereby simplifying the structure and size of the sewing machine.

[0043] Reference Figure 4Multiple guide rods 421 are vertically arranged at the bottom of the housing 21. A sliding table 42 is slidably connected to the guide rods 421 and is located below the driven rod 41. The guide rods 421 limit the movement direction of the sliding table 42. Multiple return springs 422 are provided on the sliding table 42. One end of the return spring 422 is fixedly connected to the sliding table 42, and the other end is fixed to the housing 21. The return spring 422 is used to hold the sliding table 42 in place. The driven rod 41 and the sliding table 42 abut against each other, and the return spring 422 keeps the sliding table 42 pressed against the driven rod 41. The tool holder 43 includes a horizontal frame 431, a slide cylinder 432, a cutting tool 434, and a locking block 435. The horizontal frame 431 is mounted on a sliding table 42 and is horizontally positioned. The slide cylinder 432 is fitted onto and slidably connected to the horizontal frame 431. The locking block 435 is mounted at one end of the horizontal frame 431. The cutting tool 434 is positioned between the locking block 435 and the slide cylinder 432. The slide cylinder 432 can slide and clamp the cutting tool 434 with the locking block 435, thereby mounting the cutting tool 434 on the sliding table 42. A fixing bolt 433 is mounted on the slide cylinder 432. The fixing bolt 433 passes through the slide cylinder 432 and is threaded onto the slide cylinder 432. The fixing bolt 433 can abut against the horizontal frame 431, thereby keeping the slide cylinder 432 fixed on the horizontal frame 431. A scale 436 is provided on the horizontal frame 431. The zero mark of the scale 436 is the position of the sewing needle 23. The user can place a block of hard material between the clamp 435 and the cutter 434 to adjust the position of the cutter 434. This allows the user to adjust the distance between the cutter 434 and the sewing needle 23, thereby adjusting the distance between the edge of the cut fabric and the sewing thread, which is convenient for processing textiles of different qualities and uses.

[0044] Reference Figure 5 The transmission mechanism 5 includes a button 51, a connecting cylinder 52, and a slide rod 53. The connecting cylinder 52 is mounted on the button 51, passes through the housing 21, and is slidably connected to the housing 21. The length direction of the connecting cylinder 52 is perpendicular to the length directions of the drive rod 22 and the driven rod 41. The slide rod 53 is slidably connected to the driven rod 41, and the length direction of the slide rod 53 is perpendicular to the driven rod 41.

[0045] Reference Figure 6 , Figure 7 and Figure 8A friction element 221 is mounted on the drive rod 22, and a friction element 411 is mounted on the slide rod 53 near the end of the drive rod 22. The friction elements 221 and 411 abut against each other and are connected by friction. A cavity 521 is formed at one end of the connecting cylinder 52 inside the housing 21. The end of the slide rod 53 away from the friction element 411 is inserted into the cavity 521, and a convex circle 531 is provided at the end of the slide rod 53 away from the friction element 411, which is engaged within the cavity 521. A groove 522 is formed on the end face of the connecting cylinder 52, and the length of the groove 522 is parallel to the drive rod 22. When the friction elements 221 and 411 abut against each other, the drive rod 22 can drive the driven rod 41 to move vertically. At this time, the slide rod 53 slides back and forth within the groove 522, and the slide rod 53 is always connected to the connecting cylinder 52 through the convex circle 531. When the user does not need to move the tool holder 43, the user can pull the button 51 to slide the connecting cylinder 52 away from the driven rod 41. At this time, the connecting cylinder 52 pulls the slide rod 53, thereby disengaging the friction element 221 and the friction element 411, so that the driven rod 41 stops moving back and forth. After the drive rod 22 and the driven rod 41 are disengaged, the return spring 422 pulls the sliding table 42, causing the sliding table 42 to push the driven rod 41, thereby causing the driven rod 41 to move upward. This allows for a large gap between the tool holder 43 and the worktable 3 when the tool holder 43 is stationary, making it convenient for the user to move the fabric.

[0046] The implementation principle of this application embodiment is as follows: by setting a sewing mechanism 2 and a cutting mechanism 4 on the frame 1, the transmission mechanism 5 can connect the drive rod 22 and the driven rod 41, thereby enabling one drive mechanism to drive the sewing mechanism 2 and the cutting mechanism 4 to move simultaneously. By opening a cavity 521 on the connecting tube 52, the connecting tube 52 and the slide rod 53 are kept connected. When the sewing mechanism 2 is moving, the user can connect or disconnect the driven rod 41 from the drive rod 22 by pressing the button 51 without stopping the sewing mechanism 2, which is convenient to use.

[0047] This application discloses a method for using a sewing machine with a cutting function, including the following steps:

[0048] S1: Lay the fabric flat on the workbench 3 and sew the fabric together using the sewing mechanism 2;

[0049] S2: Operate the transmission mechanism 5 to connect the cutting mechanism 4 with the sewing mechanism 2, thereby enabling the drive mechanism that drives the sewing needle 23 to move vertically to simultaneously drive the cutter 434 to move.

[0050] S3: After the fabric trimming is completed, the sewing mechanism 2 and the cutting mechanism 4 are disengaged by the transmission mechanism 5, thereby stopping the operation of the cutter 434.

[0051] The implementation principle of this application embodiment is as follows: by setting a transmission mechanism 5 on the sewing mechanism 2 and the cutting mechanism 4, the transmission mechanism 5 can connect the driving rod 22 and the driven rod 41, thereby enabling the driving mechanism to simultaneously drive the sewing needle 23 and the cutter 434 to move. When the sewing needle 23 is stationary and lifted, the cutter 434 can be stationary, thus facilitating the user to clean the workbench 3 and move the fabric.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sewing machine with a cutting function, characterized in that: The device includes a frame (1), a sewing mechanism (2), a worktable (3), a cutting mechanism (4), and a transmission mechanism (5). The frame (1) is mounted on the worktable (3). The sewing mechanism (2) includes a housing (21), a drive rod (22), and a sewing needle (23). The housing (21) is fixed to the frame (1). The drive rod (22) is slidably connected to the housing (21). A drive mechanism that drives the drive rod (22) to move back and forth is installed inside the housing (21). The sewing needle (23) is mounted on the drive rod (22). The cutting mechanism (4) includes a driven rod (41), a sliding table (42) and a knife holder (43). The driven rod (41) is slidably connected to the housing (21) and is parallel to the drive rod (22). The sliding table (42) is slidably connected to the housing (21). The knife holder (43) is mounted on the sliding table (42). The driven rod (41) rests on the sliding table (42). The transmission mechanism (5) is mounted on the housing (21) and connects the drive rod (22) and the driven rod (41). The driven rod (41) and the sliding table (42) abut against each other. A return spring (422) is provided on the sliding table (42). One end of the return spring (422) is connected to the sliding table (42), and the other end is connected to the housing (21). The return spring (422) keeps the sliding table (42) abutting against the end of the driven rod (41). A guide rod (421) is provided on the housing (21). The length direction of the guide rod (421) is parallel to the length direction of the sewing needle (23). The sliding table (42) is slidably connected to the guide rod (421). The tool holder (43) includes a horizontal frame (431), a slide cylinder (432), a fixing bolt (433), a tool (434), and a locking block (435). The horizontal frame (431) is fixed on the sliding table (42). The length direction of the horizontal frame (431) is perpendicular to the sewing needle (23). The locking block (435) is installed at one end of the horizontal frame (431). The slide cylinder (432) is slidably connected to the horizontal frame (431). The slide cylinder (432) and the locking block (435) hold the tool (434). The fixing bolt (433) passes through the slide cylinder (432) and is threaded onto the slide cylinder (432). The fixing bolt (433) abuts against the horizontal frame (431). A scale (436) is provided on the horizontal frame (431). The zero mark of the scale (436) is the position of the sewing needle (23).

2. A sewing machine with a cutting function according to claim 1, characterized in that: The transmission mechanism (5) includes a button (51), a connecting cylinder (52) and a slide rod (53). The connecting cylinder (52) is slidably connected to the housing (21) and is perpendicular to the drive rod (22). The slide rod (53) is slidably connected to the driven rod (41) and is perpendicular to the driven rod (41). One end of the slide rod (53) is slidably connected to the connecting cylinder (52) and the other end is detachably connected to the drive rod (22). The button (51) is located on the connecting cylinder (52) at one end outside the housing (21).

3. A sewing machine with a cutting function according to claim 2, characterized in that: The drive rod (22) is provided with a friction element one (221), and the slide rod (53) is provided with a friction element two (411) at the end away from the connecting cylinder (52). The friction element one (221) and the friction element two (411) are in frictional connection.

4. A method of using a sewing machine with a cutting function according to claim 1, characterized in that: Includes the following steps: S1: Lay the fabric flat on the workbench (3) and sew the fabric together using the sewing mechanism (2); S2: Operate the transmission mechanism (5) to connect the cutting mechanism (4) with the sewing mechanism (2), thereby enabling the drive mechanism that drives the sewing needle (23) to move vertically to simultaneously drive the knife holder (43) to move; S3: After the fabric trimming work is completed, the sewing mechanism (2) and the cutting mechanism (4) are disconnected through the transmission mechanism (5), thereby stopping the knife holder (43) from moving.

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