JP3153210U - Sewing press fine adjustment device - Google Patents

Abstract

To provide a sewing machine presser fine adjustment device that makes fine adjustment of an upper cloth feed wheel more convenient and easy. A fine adjustment device for holding a sewing machine includes a gap adjusting flywheel 4 and is connected to a first swing arm 3 by a cam 41 fixed therein, and the first swing arm 3 pushes and rotates the swing shaft 2 to hold the press. The upper cloth feed wheel 11 at the lower end of the apparatus 1 is moved up and down in conjunction with each other, thereby adjusting the gap between the upper cloth feed wheel 11 and the lower cloth feed wheel, and the gap adjustment becomes more convenient and easy. The finished sewing product is flat and smooth and does not wrinkle. The press-up fine adjustment flywheel 8 is connected to one end of the lever 7 by a cam 81 fixed inside. The opposite end of the insulator 7 contacts the piston 62 of the atmospheric pressure cylinder 61. The piston 62 pushes the second swing arm 5 to interlock the rotation of the swing shaft 2, and the upper cloth feed wheel 11 is slightly lifted in conjunction with this. Therefore, even if there is a cloth whose thickness is increased during the sewing process, it can be passed smoothly, and wrinkles due to compression can be prevented. [Selection] Figure 2

Description

  The present invention relates to a presser fine adjustment device for a sewing machine, and more particularly to a presser fine adjustment device for a sewing machine that is applied to an upper and lower roller cloth feed sewing machine and is used to adjust a distance between an upper cloth feed wheel and a lower cloth feed wheel.

  Generally, when sewing using a sewing machine, a cloth is sandwiched between an upper cloth feed wheel and a lower lower cloth feed wheel at the lower end of the pressing device. Thus, the cloth is fed forward by the nipping between the upper cloth feed wheel and the lower cloth feed wheel and the roller movement. However, because the elasticity and thickness of the fabric materials are different, if the gap between the upper fabric feed wheel and the lower fabric feed wheel is too small and the pressure is excessive, the fabric with a relatively plastic surface By passing through the gap, it is easy to make a compression mark. This impairs the aesthetics of the sewn product and adversely affects the quality of the product. In order to prevent pressure marks, the gap between the upper and lower fabric feed wheels is adjusted so that a relatively thick plastic surface can be applied to the skin-like fabric. Loosen the screw to fix the wheel, move the upper cloth feed wheel appropriately upwards, and further localize. However, this adjustment method is inconvenient and the control of the gap is not easy, so the efficiency is poor.

  Further, in the process of sewing with the same thread, if a plurality of layers of cloth are combined and sewing is attempted, the cloth suddenly increases in thickness. At this time, the upper cloth feed wheel is slightly lifted to facilitate passage of the cloth with increased thickness, thereby smoothing the cloth feed. In the conventional system, the operator needs to slightly push the arch holding bar below the sewing machine mounting base and lift the upper cloth feed wheel slightly during operation. If the lifted height is too high, the cloth feed will become too loose and the seams will be slipped off easily. The disadvantage of this method is that it requires skill of the operator, otherwise it is difficult to control the height of fine adjustment, which affects the efficiency of sewing.

  The first problem to be solved by the present invention is to rotate the gap adjusting handwheel to interlock the raising and lowering of the upper cloth feed wheel, thereby adjusting the gap between the upper cloth feed wheel and the lower cloth feed wheel. In order to make the gap adjustment more convenient and easy, it is an object to provide a sewing machine fine adjustment device suitable for sewing cloths of various thicknesses, the sewing product being flat and free of wrinkles.

  The second problem to be solved by the present invention is to finely adjust the lifting amount of the upper fabric feed wheel by turning the press-up fine adjustment handwheel, and even if there is a fabric with increased thickness in the sewing process, According to this system, it is possible to provide a sewing machine presser fine adjustment device that makes fine adjustment of the upper cloth feed wheel more convenient and easy.

In order to solve the above problems, the present invention provides the following sewing machine presser fine adjustment device.
The presser fine adjustment device for the sewing machine has a presser device, swing shaft, stopper arm, first swing arm, gap adjustment flywheel, second swing arm, fixing plate, lever, and press-up fine adjustment flywheel.
The presser device has an upper cloth feed wheel installed at the lower end of the presser bar, a spring is fitted on the presser bar, and a stopper block is installed below the spring,
A push-up bar is fixed to one end of the swing shaft, and the push-up bar contacts the stopper block,
The stopper arm is fixed to the swing shaft, and on the stopper arm, an adjustment pin having a screw thread is installed,
The first swing arm is movably fitted on the swing shaft, the first swing arm is located on one side of the stopper arm, the first swing arm is provided with an axial stopper pin, and At the upper end, the first passive component is installed, and the stopper pin is located on the side of the stopper arm, and the stopper arm is pushed and rotated.
The clearance adjustment flywheel has a cam fixed therein, the cam flange exhibits a gradually opening curve, and the flange connects the first passive component;
The second swing arm is movably fitted to the swing shaft, is located on the opposite side of the stopper arm, has a lug at the upper end thereof, and has a convex portion at the middle, the convex portion being the stopper Touch the arm adjustment pin, push the stopper arm and rotate it,
The fixing plate fixes a pneumatic cylinder, a piston is installed in the pneumatic cylinder, the piston is located on a side of the second swing arm,
The lever is connected to the fixed plate by a pivot, one end of which is a branch port, the branch port contacts the piston, and the second passive component is installed at the opposite end,
The press-up fine adjustment flywheel has a cam fixed therein, the cam flange exhibits a gradually opening curve, and the cam flange is connected to the second passive component of the lever.

  When the cloth to be sewn is relatively thick, it is necessary to adjust the upper cloth feed wheel upward to increase the gap between the upper cloth feed wheel and the lower cloth feed wheel. When turned counterclockwise, the cam fixed to the gap adjustment flywheel also rotates counterclockwise, thereby increasing the distance from the flange to the center and pushing the first passive component backward, thus moving The first swing arm swings backward, and a stopper pin fixed to the first swing arm pushes the stopper arm. As a result, the stopper arm rotates rearward, and at the same time, the swinging shaft fixed to the stopper arm is rotated rearward so that the front end of the push-up bar moves upward. Presses and compresses the spring upward, and at the same time, the upper cloth feed wheel is lifted upward, so that the gap between the upper cloth feed wheel and the lower cloth feed wheel is increased.

  When the thickness of the cloth increases during the sewing process, the lifting amount of the upper cloth feed wheel can be set. At this time, by rotating the press-up fine adjustment flywheel, it is fixed to the press-up fine adjustment flywheel. The cam rotates clockwise, the distance from the cam flange to the center decreases, the space for the second passive component to rotate forward increases, and at this time, the piston is pushed out by the pneumatic cylinder. Accordingly, the stroke of the branch port of the insulator increases accordingly, and when the atmospheric pressure enters the atmospheric pressure cylinder, the piston is pushed out and comes into contact with the branch port. Moreover, the second passive component rotates forward and connects to the cam flange, so that when the piston comes into contact with the lug, the second swing arm swings backward, and the convex portion on the second swing arm. After touching the adjustment pin of the stopper arm, the stopper arm is pushed and rotated backward, and at the same time, the swing shaft is rotated backward so that the push-up bar moves upward, and the stopper block Press and move to compress the spring, so that the upper fabric feed wheel lift is slightly increased, allowing relatively thick fabric to pass smoothly.

  The present invention adjusts the clearance between the upper and lower fabric feed wheels by rotating the press-up fine adjustment flywheel, and rotates the press-up fine adjustment flywheel to increase the lifting height of the upper fabric feed wheel. Set. In this way, the adjustment becomes more convenient and easy, the sewing process becomes smoother, and wrinkles do not occur on the finished sewing product, and high quality can be ensured.

It is the combination solid figure of this invention. It is a component exploded view of the present invention. It is a front view of the present invention. In this invention, it is the schematic of the clearance gap adjustment of an upper cloth feed wheel and a lower cloth feed wheel. In this invention, it is the schematic of the operation | movement which adjusts the clearance gap between an upper cloth feed wheel and a lower cloth feed wheel. In this invention, it is the schematic of the operation | movement which lifts a top cloth feed wheel slightly. In this invention, it is the schematic of the operation | movement which finely adjusts the lifting amount of a top cloth feed wheel.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings.

  As shown in FIG. 1 which is a combined three-dimensional view of the present invention, FIG. 2 which is an exploded view of parts of the present invention, and FIG. 3 which is a front view of the present invention, A swing shaft 2, a first swing arm 3, a gap adjustment flywheel 4, a second swing arm 5, a fixed plate 6, an insulator 7, a press-up fine adjustment flywheel 8, and a lower cloth feed wheel 9 are provided. The presser device 1 includes a presser bar 10, an upper cloth feed wheel 11 is installed below the presser bar 10, and a compression spring 12 is fitted on the upper end thereof. An adjustment screw 13 is fitted over the spring 12, and a stopper block 14 is installed under the spring 12. The adjusting screw 13 adjusts the pressure of the spring 12. A push-up rod 20 is fixed to one end of the swing shaft 2, and one end of the push-up rod 20 rotates upward or downward according to the rotation of the swing shaft 2. When the push-up bar 20 comes into contact with the stopper block 14 and the push-up bar 20 rotates upward and pushes the stopper block 14, the stopper block 14 compresses the spring 12 and interlocks with the upper cloth feed wheel 11. Head up. When the pushing bar 20 releases the pushing force, the restoring force of the compressed spring 12 pushes the pushing bar 20 downward, and thereby the upper cloth feed wheel 11 moves downward. The stopper arm 21 is fixed to the swing shaft 2. An adjustment pin 210 is inserted and installed on the stopper arm 21. The adjustment pin 210 is installed in a direction perpendicular to the swing axis 2.

  The first swing arm 3 is movably fitted on the swing shaft 2, and the first swing arm 3 is located on one side of the stopper arm 21. The first swing arm 3 is provided with an axial stopper pin 30 and a protruding first passive component 31 at the upper end. The axial stopper pin 30 is located on the side of the stopper arm 21 and pushes and rotates the stopper arm 21. The gap adjusting flywheel 4 has a convex column at the bottom, and the cam 41 having the fitting hole 410 is fitted into the convex column, and the cam 41 and the gap adjusting flywheel 4 are screwed and fixed with screws. The flange 411 of the cam 41 exhibits a gradually opening curve, and the flange 411 connects the first passive component 31. When the clearance adjustment flywheel 4 is turned, the cam 41 rotates accordingly and pushes and moves the first passive component 31 to swing the first swing arm 3.

  The second swing arm 5 is movably fitted to the swing shaft 2 and is located on the opposite side of the stopper arm 21. A lug 50 is installed at the upper end, and a convex portion 51 is provided in the middle. The convex portion 51 is positioned at one end of the adjustment pin 210 of the stopper arm 21, and the adjustment pin 210 is pushed and moved by the convex portion 51, thereby rotating the stopper arm 21. The fixed plate 6 fixes the atmospheric pressure cylinder 61, and a piston 62 is installed in the atmospheric pressure cylinder 61. The piston column at the front end of the piston 62 is located on the side of the lug 50. When the piston 62 is pushed out from the atmospheric pressure cylinder 61, the lug 50 is pushed and moved, thereby rotating the second swing arm 5.

  The insulator 7 is coupled to the fixed plate 6 by a pivot 70. One end of the branch port 71 is connected with the piston 62 interposed therebetween. The second passive component 72 is inserted and installed at the opposite end. The insulator 7 can rotate with the pivot 70 as a fulcrum, whereby the branch port 71 engages the piston 62 and pushes the piston 62 back into the atmospheric pressure cylinder 61. Or it leaves | separates from the piston 62 and this causes the piston 62 to come out of the atmospheric pressure cylinder 61 and pushes the second swing arm 5 to move.

  The press-up fine adjustment flywheel 8 has a convex column at the bottom, and a cam 81 having a fitting hole 810 is fitted into the convex column. Further, the cam 81 and the press-up fine adjustment flywheel 8 are screwed and fixed with screws. The cam 81 flange 811 exhibits a gradually opening curve, and the flange 811 is connected to the second passive component 72 of the insulator 7. When the press-up fine adjustment flywheel 8 is turned, the rotation of the cam 81 is interlocked, and the cam 81 pushes and moves the second passive component 72, whereby the lever 7 rotates.

  As shown in FIG. 4, when the cloth to be sewn is relatively thick, the upper cloth feed wheel 11 is adjusted upward, and the gap between the upper cloth feed wheel 11 and the lower cloth feed wheel 9 is adjusted as shown in FIG. It needs to be bigger. At this time, as shown in FIG. 5, the gap adjusting flywheel 4 is rotated counterclockwise, and the cam 41 fixed to the gap adjusting flywheel 4 is also rotated counterclockwise. As a result, the distance from the flange 411 to the center is increased, and the first passive component 31 is pushed and moved backward, and thus the first swing arm 3 swings backward. The stopper pin 30 fixed to the first swing arm 3 pushes the stopper arm 21, and thus the stopper arm 21 rotates backward. At the same time, the swing shaft 2 fixed thereto is interlocked and rotated rearward, whereby the front end of the push-up bar 20 moves upward. The pusher bar 20 causes the stopper block 14 to press and compress the spring 12 upward, and simultaneously lifts the upper cloth feed wheel 11 upward. Thus, the gap between the upper cloth feed wheel 11 and the lower cloth feed wheel 9 is increased.

  When the cloth is relatively thin, it is necessary to adjust the upper cloth feed wheel 11 downward to reduce the gap between the upper cloth feed wheel 11 and the lower cloth feed wheel 9. At this time, the gap adjusting flywheel 4 is rotated clockwise to reduce the distance from the flange 411 to the center, and provide a space where the first passive component 31 returns. Thereby, the stopper block and the upper cloth feed wheel 11 move downward by the restoring force of the compressed spring 12. Thus, the gap between the upper cloth feed wheel 11 and the lower cloth feed wheel 9 is reduced. At the same time, the push-up bar 20 is pushed downward to rotate the swing shaft 2 forward. The stopper arm 21 rotates forward according to the swing axis 2, contacts the stopper pin 30, and then pushes the first swing arm 3 to swing forward. Thereby, the first passive component 31 is connected to the flange 411 of the cam 41.

  As shown in FIG. 6, when the thickness of the cloth increases during the sewing process, the upper cloth feed wheel 11 must be slightly raised so that the cloth can enter smoothly. At this time, the operation of the atmospheric pressure cylinder 61 is controlled, and the upper cloth feed wheel 11 is raised to a certain height. This lifting amount is set by turning the press-up fine adjustment flywheel 8 and, as shown in FIG. 7, the press-up fine adjustment flywheel 8 is turned clockwise. As a result, the cam 81 fixed to the press-up fine adjustment flywheel 8 rotates clockwise, the distance from the cam 81 flange 811 to the center decreases, and the space for the second passive component 72 to rotate forward increases. . At this time, the piston 62 is pushed out by the atmospheric pressure cylinder 61, and the stroke of the branch port 71 of the insulator 7 increases accordingly. When atmospheric pressure enters the atmospheric pressure cylinder 61, the branch port 71 rotates backward with the pivot 70 as a fulcrum, and the second passive component 72 rotates forward and connects to the cam 81 flange 811. Moreover, when the piston 62 is pushed out and comes into contact with the lug 50, the second swing arm 5 is pushed and moved to swing backward. The convex portion 51 on the second swing arm 5 contacts the adjustment pin 210 of the stopper arm 21 and then pushes the stopper arm 21 to rotate backward. At the same time, the swing shaft 2 is interlocked and rotated backward, whereby the push-up bar 20 moves upward, pushes and moves the stopper block 14, and compresses the spring 12. Thus, the lifting amount of the upper cloth feed wheel 11 is increased. On the contrary, if the press-up fine adjustment flywheel 8 is rotated counterclockwise, the lifting amount of the upper cloth feed wheel 11 is reduced.

  The present invention adjusts the gap between the upper cloth feed wheel 11 and the lower cloth feed wheel 9 by rotating the press-up fine adjustment flywheel 8 and rotates the press-up fine adjustment flywheel 8 to rotate the upper cloth feed wheel 8. 11 lift height is set. In this way, the adjustment becomes more convenient and easy, the sewing process becomes smoother, and wrinkles do not occur on the finished sewing product, and high quality can be ensured.

  The names and contents of the present invention described above are only used for explaining the technical contents of the present invention, and do not limit the present invention. All equivalent applications based on the spirit of the present invention, conversion, replacement of parts (structure), and increase / decrease in quantity shall be included in the protection scope of the present invention.

  The present invention has the novelty that is a requirement of the utility model, has sufficient progress compared to the conventional similar products, has high practicality, meets the needs of society, and has a very high industrial utility value .

DESCRIPTION OF SYMBOLS 1 Presser device 10 Presser bar 11 Top cloth feed wheel 12 Spring 13 Adjustment screw 14 Stopper block 2 Swing shaft 20 Push-up bar 21 Stopper arm 210 Adjustment pin 3 First swing arm 30 Stopper pin 31 First passive component 4 Gap adjustment flywheel 41 Cam 410 Fitting hole 411 Flange 5 Second swing arm 50 Lug 51 Protruding part 6 Fixing plate 61 Pneumatic cylinder 62 Piston 7 Insulator 70 Pivot 71 Branch port 72 Second passive component 8 Press-up fine adjustment flywheel 81 Cam 810 Fitting hole 811 Flange 9 Lower cloth feed wheel

Claims (8)

Equipped with a holding device, swing shaft, stopper arm, first swing arm, gap adjustment flywheel, second swing arm, fixed plate, lever, press-up fine adjustment flywheel,
The presser device has an upper cloth feed wheel installed at the lower end of the presser bar, a spring is fitted on the presser bar, a stopper block is installed below the spring, and a push-up bar is installed at one end of the swing shaft. Fixed, the push-up bar contacts the stopper block,
The stopper arm is fixed to the swing shaft,
The first swing arm is fitted to the swing shaft in a movable state;
The first swing arm is located on one side of the stopper arm,
The first swing arm is provided with a stopper pin, and the upper end is provided with a first passive component, the stopper pin is located on a side of the stopper arm, and the stopper arm is pushed and rotated.
The clearance adjustment flywheel has a cam fixed therein, the cam flange exhibits a gradually opening curve, and the flange connects the first passive component,
The second swing arm is movably fitted to the swing shaft and is located on the opposite side of the stopper arm, the second swing arm pushes and rotates the stopper arm, and the fixing plate is a pneumatic cylinder. A piston is installed in the pneumatic cylinder, the piston is located on a side of the second swing arm, and the second swing arm is pushed to swing;
The lever is connected to the fixed plate by a pivot, one end of which is in contact with the piston, and the other end is provided with a second passive component,
The press-up fine adjustment flywheel has a cam fixed therein, the cam flange exhibits a gradually opening curve, and the cam flange is connected to a second passive component of the lever. Presser fine adjustment device.   The sewing machine presser fine adjustment device according to claim 1, wherein the lever contacts a branch port of the piston end.   An adjustment pin is installed on the stopper arm, the second swing arm includes a convex portion, the convex portion contacts the adjustment pin, and the stopper arm is pushed and rotated. Item 2. A sewing machine presser fine adjustment device according to Item 1.   The lug is installed on the upper end of the second swing arm, and the piston is in contact with the lug in a movable state, thereby pushing and rotating the second swing arm. Sewing press fine adjustment device. Equipped with a holding device, swing shaft, stopper arm, second swing arm, fixed plate, lever, and press-up fine adjustment flywheel,
The presser device has an upper cloth feed wheel installed at the lower end of the presser bar, a spring is fitted on the presser bar, a stopper block is installed below the spring, and a push-up bar is installed at one end of the swing shaft. Fixed, the push-up bar contacts the stopper block,
The stopper arm is fixed to the swing shaft,
The second swing arm is movably fitted to the swing shaft and is located on one side of the stopper arm,
The fixed plate fixes a pneumatic cylinder, a piston is installed in the pneumatic cylinder, and the piston is located on a side of the second swing arm,
The lever is connected to the fixed plate by a pivot, one end of which is in contact with the piston, and the other end is provided with a second passive component,
The press-up fine adjustment flywheel has a cam fixed therein, the cam flange exhibits a gradually opening curve, and the cam flange is connected to a second passive component of the lever. Presser fine adjustment device.   The sewing machine presser fine adjustment device according to claim 5, wherein the lever is in contact with a branch port of the piston end.   An adjustment pin is installed on the stopper arm, the second swing arm includes a convex portion, the convex portion contacts the adjustment pin, and the stopper arm is pushed and rotated. Item 6. A sewing machine presser fine adjustment device according to Item 5.   The lug is installed on the upper end of the second swing arm, and the piston is in contact with the lug in a movable state, thereby pushing and rotating the second swing arm. Sewing press fine adjustment device.

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