Machine head device of sewing equipment for fabric processing

Abstract

The invention discloses a sewing equipment machine head device for fabric processing, which comprises a machine head body and a motor arranged in the machine head body, the machine head body comprises a machine shell, an upper plane and a lower plane, the position of the upper plane is higher than that of the lower plane, the motor is fixedly mounted on the upper plane, and the machine shell is used for packaging sewing equipment; a sewing machine needle is inserted into the lower end of the lifting mechanism, and the lifting mechanism is used for connecting the sewing machine needle to move up and down; and the linkage mechanism is connected with the driving end of the motor, the linkage mechanism is connected with the lifting mechanism, and the linkage mechanism is used for driving the lifting mechanism to move up and down. According to the device, the pressing mechanism capable of automatically adjusting the force for pressing the fabric is used for sewing the quilt cover fabric, and compared with a traditional presser foot with a fixed position, the force can be reduced when the fabric becomes thick, and the force can be increased when the fabric becomes thin, so that the normal operation of the sewing process is ensured, and the sewing effect is ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sewing equipment, and particularly relates to a sewing equipment head device for fabric processing. BACKGROUND

[0002] A household quilt cover is a commonly used household item. A relatively thick quilt cover fabric is generally more than one layer. The fabric is combined together through sewing. A sewing machine is required to sew together the multiple layers of fabric. The sewing effect of the sewing machine directly affects the fitting degree between the quilt cover fabrics after sewing.

[0003] Because the fabric of the quilt cover is relatively thick, the needle of the sewing machine generally has a uniform length and pressing force. This can easily cause the pressing to be too tight, which can increase the resistance to the movement of the fabric. Meanwhile, if the fabric is pressed too small, the thread can be hooked during the sewing process, which can cause the sewing line to be loose. SUMMARY

[0004] Based on the technical problems in the background art, the application provides a sewing equipment head device for fabric processing.

[0005] The sewing equipment head device for fabric processing provided by the application comprises: A head body and a motor arranged in the head body, the head body comprises a casing, an upper plane and a lower plane, the position of the upper plane is higher than that of the lower plane, the motor is fixedly installed on the upper plane, and the casing is used for packaging the sewing equipment; A lifting mechanism, the lower end of the lifting mechanism is provided with a sewing machine needle, and the lifting mechanism is used for realizing the up-down movement of the sewing machine needle; A linkage mechanism connected with the driving end of the motor, the linkage mechanism is connected with the lifting mechanism, the linkage mechanism is used for driving the lifting mechanism to move up and down, and the lifting mechanism is arranged at the lower plane and penetrates through the lower plane; A pressing mechanism connected to the outer side of the casing and located below the lower plane, and the pressing mechanism is used for pressing and fixing the passing quilt cover fabric.

[0006] Preferably, the lifting mechanism comprises a lifting shaft vertically arranged on the lower plane, a fixed block is fixedly connected to the inner wall of the casing, a limiting sleeve is fixedly inserted on the fixed block, the lifting shaft is slidingly inserted in the limiting sleeve, a lifting spring is fixedly connected to the upper end of the lifting shaft, the end of the lifting spring away from the lifting shaft is fixedly connected with the inner wall of the casing, the sewing machine needle is inserted into the lower end of the lifting shaft, and the clamping mechanism is arranged at the position where the sewing machine needle and the lifting shaft are connected.

[0007] Preferably, the linkage mechanism comprises a movable shaft and a rotating plate fixedly connected with the driving end of the motor, a rotating shaft is connected between the rotating plate and the movable shaft, one end of the rotating shaft is fixedly connected with the rotating plate, and the other end is rotatably connected with the movable shaft, the rotating shaft and the driving end of the motor are respectively connected at opposite end positions of the rotating plate, the movable shaft is further rotatably connected with a fixed shaft, the rotating shaft and the fixed shaft are respectively rotatably connected at opposite end positions of the movable shaft, and the fixed shaft is fixedly connected on the outer surface of the lifting shaft.

[0008] Preferably, the clamping mechanism comprises protrusions clamped on both sides of the sewing machine needle and connecting blocks fixedly connected with the protrusions, the lifting shaft is provided with a mounting cavity, the sewing machine needle is inserted into the mounting cavity, one side of each of the two connecting blocks is fixedly connected with a connecting shaft, one of the connecting shafts is fixedly connected with the inner wall of the mounting cavity, and the other connecting shaft penetrates through the inner wall of the mounting cavity, the connecting shaft penetrating through the mounting cavity is symmetrically provided with clamping springs for abutting against the connecting blocks in a manner that the clamping springs are arranged above and below the connecting shaft, the two ends of each of the two clamping springs are fixedly connected with the connecting block and the inner wall of the mounting cavity, respectively, the end of the connecting shaft penetrating through the mounting cavity, away from the connecting block, is provided with a pulling block convenient for being pulled by a user, recesses for clamping the protrusions are symmetrically formed at both sides of the upper end of the sewing machine needle, and a hole for penetrating through the sewing machine needle is formed below the mounting cavity.

[0009] Preferably, the abutting mechanism comprises a presser foot for pressing the fabric and a fixed plate for supporting the presser foot, the fixed plate is fixedly connected below the lower plane, the fixed plate is fixedly connected with the presser foot through an abutting spring, one side of the lower end of the fixed plate is fixedly connected with a threaded sleeve, a threaded shaft is threadedly inserted into the threaded sleeve, an upper magnetic block is rotatably connected to the lower end of the threaded shaft, a lower magnetic block is installed on the presser foot at a position corresponding to the upper magnetic block, and the upper magnetic block and the lower magnetic block are in a magnetic repulsion relationship.

[0010] Preferably, the abutting spring is symmetrically provided with two insertion shafts, one end of each of the two insertion shafts is fixedly connected with the presser foot, and the other end of each of the two insertion shafts is slidably inserted into the fixed plate, and the presser foot is located directly below the sewing machine needle.

[0011] Compared with the prior art, the present application has the following advantages: 1. The abutting mechanism can automatically adjust the force for pressing the fabric, so that the fabric can be sewn, the force can be reduced when the fabric becomes thick, the force can be increased when the fabric becomes thin, the normal sewing process can be ensured, and the sewing effect can be ensured. 2. The clamping mechanism is used to fix the sewing machine needle, the clamping spring in the clamping mechanism is used to clamp the protrusion and the recess of the sewing machine needle, the clamping spring is used to fix the protrusion and the recess in a manner of using elastic force, so that the clamping mechanism is convenient to install and avoids falling off. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 A three-dimensional structure schematic diagram of a machine head device of a sewing equipment for fabric processing is provided for the present application; Figure 2 A three-dimensional structure schematic diagram of the inside of a machine head device of a sewing equipment for fabric processing is provided for the present application; Figure 3 A three-dimensional structure schematic diagram of a clamping mechanism is provided for the present application; Figure 4 A three-dimensional structure schematic diagram of a pressing mechanism is provided for the present application. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0014] Reference Figures 1-4 A machine head device of a sewing equipment for fabric processing comprises a machine head body 1 and a motor 2 arranged in the machine head body 1. The machine head body 1 comprises a machine shell 11, an upper plane 12 and a lower plane 13. The position of the upper plane 12 is higher than that of the lower plane 13. The motor 2 is fixedly installed on the upper plane 12. The machine shell 11 is used for packaging the sewing equipment. A lifting mechanism 4 is provided. The lower end of the lifting mechanism 4 is inserted with a sewing machine needle 6. The lifting mechanism 4 is used for realizing the up-and-down movement of the sewing machine needle 6. A linkage mechanism 3 is connected with the driving end of the motor 2. The linkage mechanism 3 is connected with the lifting mechanism 4. The linkage mechanism 3 is used for driving the lifting mechanism 4 to move up and down. The lifting mechanism 4 is arranged at the lower plane 13 and penetrates through the lower plane 13. A pressing mechanism 7 is connected to the outer side of the machine shell 11 and located below the lower plane 13. The pressing mechanism 7 is used for pressing and fixing the passing quilt fabric.

[0015] The lifting mechanism 4 comprises a lifting shaft 42 vertically arranged on the lower plane 13. A fixed block 44 is fixedly connected to the inner wall of the machine shell 11. A limiting sleeve 43 is fixedly inserted on the fixed block 44. The lifting shaft 42 is slidingly inserted in the limiting sleeve 43. The upper end of the lifting shaft 42 is fixedly connected with a lifting spring 41. The end of the lifting spring 41 away from the lifting shaft 42 is fixedly connected with the inner wall of the machine shell 11. The sewing machine needle 6 is inserted in the lower end of the lifting shaft 42. A clamping mechanism 5 is arranged at the position where the sewing machine needle 6 is connected with the lifting shaft 42. The lifting shaft 42 drives the sewing machine needle 6 to move up and down to realize the effect of sewing. Under the action of the linkage mechanism 3, the lifting shaft 42 moves downward against the elastic force of the lifting spring 41, and then performs sewing. When the acting force of the linkage mechanism 3 on the lifting shaft 42 gradually decreases, the elastic force of the lifting spring 41 will make the lifting shaft 42 gradually move upward. Then the sewing machine needle 6 will reset. The lifting shaft 42 can only move vertically up and down under the limitation of the limiting sleeve 43 and the lifting spring 41.

[0016] The linkage mechanism 3 comprises a movable shaft 33 and a rotating plate 31 fixedly connected with the driving end of the motor 2, a rotating shaft 32 connected between the rotating plate 31 and the movable shaft 33, one end of the rotating shaft 32 fixedly connected with the rotating plate 31 and the other end rotatably connected with the movable shaft 33, the rotating shaft 32 and the driving end of the motor 2 connected at opposite ends of the rotating plate 31 respectively, and the movable shaft 33 further rotatably connected with a fixed shaft 34, the rotating shaft 32 and the fixed shaft 34 rotatably connected at opposite ends of the movable shaft 33 respectively, and the fixed shaft 34 fixedly connected with the outer surface of the lifting shaft 42. When the motor 2 drives the rotating plate 31 to rotate through the driving end, the rotating plate 31 drives the rotating shaft 32 to rotate synchronously, the rotating shaft 32 drives the movable shaft 33 to rotate in the process of rotating, and the rotating plate 31 drives the fixed shaft 34 to move upward through the rotating shaft 32, when the rotating shaft 32 rotates to the highest position, the rotating shaft 32 drives the lifting shaft 42 to the highest position through the movable shaft 33, when the rotating plate 31 continues to rotate, the horizontal position of the rotating shaft 32 gradually decreases, the lifting spring 41 has a downward elastic force on the lifting shaft 42, the restriction of the movable shaft 33 on the fixed shaft 34 gradually decreases, and the lifting shaft 42 moves downward under the action of the elastic force, and then, with the continuous rotation of the rotating plate 31, the rotating shaft 32 rotates between the highest position and the lowest position, and the lifting shaft 42 reciprocates upward and downward, wherein the movable shaft 33 plays a role in restraining and angle adjustment, since the movement track of the rotating shaft 32 is circular and the movement track of the lifting shaft 42 is a straight line upward and downward, the movable shaft 33 rotatably connected at both ends is used to adjust the different angle positions between the lifting shaft 42 and the rotating shaft 32.

[0017] The clamping mechanism 5 comprises protrusions 52 clamped on both sides of the sewing machine needle 6 respectively and connecting blocks 51 fixedly connected with the protrusions 52, the lifting shaft 42 is provided with a mounting cavity 57, the sewing machine needle 6 is inserted into the mounting cavity 57, one side of each of the two connecting blocks 51 is fixedly connected with a connecting shaft 53, one of the connecting shafts 53 is fixedly connected with the inner wall of the mounting cavity 57, and the other connecting shaft 53 penetrates through the inner wall of the mounting cavity 57, the connecting shaft 53 penetrating through the mounting cavity 57 is provided with clamping springs 55 symmetrically arranged on the upper and lower sides and used to abut against the connecting blocks 51, the two ends of the two clamping springs 55 are fixedly connected with the connecting blocks 51 and the inner wall of the mounting cavity 57 respectively, the end of the connecting shaft 53 penetrating through the mounting cavity 57 away from the connecting block 51 is provided with a pulling block 54 for facilitating the user to pull, recesses 56 for clamping the protrusions 52 are symmetrically arranged on the upper end of the sewing machine needle 6, and a hole for penetrating through the sewing machine needle 6 is arranged below the mounting cavity 57. When installing the sewing needle 6, the sewing needle 6 is inserted into the installation cavity 57 from the hole below the lifting shaft 42, the connecting shaft 53 is pulled outwards by pulling the block 54, one side of the connecting block 51 and the protruding block 52 remain stationary, after being inserted into the installation cavity 57, the sewing needle 6 is slightly inclined, so that the groove 56 on one side of the sewing needle 6 is just clamped with the stationary protruding block 52, and then the pulling block 54 is released, and the movable connecting block 51 and the protruding block 52 on the other side are fixed from the other side of the sewing needle 6 under the elastic force of the clamping spring 55, and then the clamping mechanism 5 realizes the fixing effect of the sewing needle 6.

[0018] The pressing mechanism 7 comprises a presser foot 77 for pressing the fabric and a fixed plate 71 for supporting the presser foot 77, the fixed plate 71 is fixedly connected below the lower plane 13, the fixed plate 71 and the presser foot 77 are fixedly connected with a pressing spring 74, one side of the lower end of the fixed plate 71 is fixedly connected with a threaded sleeve 73, the threaded sleeve 73 is threadedly inserted with a threaded shaft 72, the lower end of the threaded shaft 72 is rotatably connected with an upper magnetic block 75, the presser foot 77 is installed with a lower magnetic block 78 at a position corresponding to the upper magnetic block 75, the upper magnetic block 75 and the lower magnetic block 78 are in a magnetic repulsion relationship, the pressing spring 74 is symmetrically provided with a plug shaft 76 on both sides, one end of the two plug shafts 76 is fixedly connected with the presser foot 77, and the other end of the two plug shafts 76 is slidably inserted into the fixed plate 71, and the presser foot 77 is located directly below the sewing needle 6.

[0019] The force of the presser foot 77 pressing the fabric can be adjusted according to the thickness of the fabric, under the elastic force of the pressing spring 74, the presser foot 77 is in a contracted state, the upper magnetic block 75 gradually approaches the lower magnetic block 78, and the magnetic repulsion of the upper magnetic block 75 to the lower magnetic block 78 can overcome the elastic force of the pressing spring 74, so that the presser foot 77 is pressed on the fabric, and since the position of the upper magnetic block 75 can be adjusted by the threaded shaft 72, the degree of stretching of the pressing spring 74 can also be adjusted, in order to make the fixed plate 71 and the presser foot 77 more stable, the plug shaft 76 is inserted into the fixed plate 71, so that the presser foot 77 can only move up and down, having a limiting effect.

[0020] When the embodiment of the application is applied, when stitching the cover fabric with a relatively large thickness, first, the pressing force of the pressing mechanism 7 is adjusted according to the thickness of the fabric, the staff rotates the threaded shaft 72 relative to the threaded sleeve 73, the threaded shaft 72 moves up and down, which drives the upper magnetic block 75 to move up and down, in the process of rotating, the upper magnetic block 75 can move up and down without changing the angle, because the upper magnetic block 75 and the threaded shaft 72 are rotationally connected, and the position of the threaded shaft 76 and the pressing spring 74 is limited, the repulsion between the upper magnetic block 75 and the lower magnetic block 78 is a magnetic force, when the upper magnetic block 75 approaches the lower magnetic block 78, the repulsion of the upper magnetic block 75 to the lower magnetic block 78 will make the presser foot 77 away from the fixed plate 71, the pressing spring 74 will be stretched under the action of external force, in the process of stretching, the insertion shaft 76 slides relative to the fixed plate 71 to control the angle of the presser foot 77, because the height of the presser foot 77 is balanced by the magnetic force between the upper magnetic block 75 and the lower magnetic block 78 and the elastic force of the pressing spring 74, by changing the magnetic force between the two through the threaded shaft 72, the large range force of the presser foot 77 to the fabric is controlled, because the magnetic force and the elastic force resist each other to reach a balance, but not a constant state at all times, and when stitching the cover fabric, the thickness is not constant everywhere, when stitching the corners, the thickness changes, the magnetic force and the elastic force will automatically adjust according to the change of the thickness of the fabric at the presser foot 77, so that the pressing of the fabric is not too tight or too loose. Then the sewing thread passes through the lower end of the sewing machine needle 6, the motor 2 is started, the motor 2 drives the rotating shaft 32 to rotate through the driving end, in the process of rotating, the rotating shaft 32 drives the movable shaft 33 to rotate, which drags the position of the fixed shaft 34, the change of the position of the fixed shaft 34 changes the position of the lifting shaft 42, when the rotating shaft 32 rotates to the uppermost position, the lifting shaft 42 will move upward, when the rotating shaft 32 rotates downward, the force of the fixed shaft 34 on the lifting shaft 42 decreases, the lifting shaft 42 moves downward under the action of the elastic force of the lifting spring 41, because the rotating shaft 32 makes reciprocating motion, the lifting shaft 42 will also reciprocate upward and downward, so that the sewing machine needle 6 can perform corresponding sewing on the cover fabric, after sewing is completed, the threaded shaft 72 is rotated upward, the presser foot 77 is retracted by the pressing spring 74.

[0021] The above only describes the preferred embodiments of the application, it should be noted that for ordinary skilled in the art, without departing from the principles of the application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the application.

Claims

1. A sewing machine head device for fabric processing, characterized in that, The sewing equipment head device comprises: A head body (1) and a motor (2) arranged in the head body (1), the head body (1) comprises a casing (11), an upper plane (12) and a lower plane (13), the position of the upper plane (12) is higher than that of the lower plane (13), the motor (2) is fixedly installed on the upper plane (12), and the casing (11) is used for packaging the sewing equipment; A lifting mechanism (4), a lower end of the lifting mechanism (4) is inserted with a sewing needle (6), and the lifting mechanism (4) is used for realizing the up-down movement of the connected sewing needle (6); A linkage mechanism (3) connected with the driving end of the motor (2), the linkage mechanism (3) is connected with the lifting mechanism (4), the linkage mechanism (3) is used for driving the lifting mechanism (4) to move up and down, and the lifting mechanism (4) is arranged at the lower plane (13) and passes through the lower plane (13); A pressing mechanism (7) connected outside the casing (11) and below the lower plane (13), the pressing mechanism (7) is used for pressing and fixing the passing quilt cover fabric.

2. The machine head device of the sewing apparatus for fabric processing according to claim 1, characterized in that, The lifting mechanism (4) comprises a lifting shaft (42) vertically arranged on the lower plane (13), a fixed block (44) fixedly connected to the inner wall of the casing (11), a limiting sleeve (43) fixedly inserted on the fixed block (44), the lifting shaft (42) being slidingly inserted in the limiting sleeve (43), a lifting spring (41) fixedly connected to the upper end of the lifting shaft (42), one end of the lifting spring (41) away from the lifting shaft (42) being fixedly connected to the inner wall of the casing (11), the sewing needle (6) being inserted at the lower end of the lifting shaft (42), and the clamping mechanism (5) being arranged at the position where the sewing needle (6) is connected with the lifting shaft (42).

3. The machine head device of claim 2, wherein The linkage mechanism (3) comprises a movable shaft (33) and a rotating plate (31) fixedly connected with the driving end of the motor (2), a rotating shaft (32) being connected between the rotating plate (31) and the movable shaft (33), one end of the rotating shaft (32) being fixedly connected with the rotating plate (31), and the other end being rotatably connected with the movable shaft (33), the rotating shaft (32) and the driving end of the motor (2) being respectively connected at the positions of the opposite two ends of the rotating plate (31), the movable shaft (33) further rotatably connected with a fixed shaft (34), the rotating shaft (32) and the fixed shaft (34) being respectively rotatably connected at the positions of the opposite two ends of the movable shaft (33), and the fixed shaft (34) being fixedly connected to the outer surface of the lifting shaft (42).

4. The machine head device of claim 2, wherein The clamping mechanism (5) comprises protrusions (52) clamped on both sides of the sewing machine needle (6) respectively and connecting blocks (51) fixedly connected with the protrusions (52), an installation cavity (57) is formed in the lifting shaft (42), the sewing machine needle (6) is inserted into the installation cavity (57), one side of each of the connecting blocks (51) is fixedly connected with a connecting shaft (53), one of the connecting shafts (53) is fixedly connected with the inner wall of the installation cavity (57), the other connecting shaft (53) penetrates through the inner wall of the installation cavity (57), the connecting shaft (53) penetrating through the installation cavity (57) is provided with clamping springs (55) for pressing the connecting blocks (51) in a symmetrical manner, the two ends of each of the clamping springs (55) are fixedly connected with the connecting blocks (51) and the inner wall of the installation cavity (57), the end of the connecting shaft (53) penetrating through the installation cavity (57) away from the connecting blocks (51) is provided with a pulling block (54) for facilitating the user to pull, the upper ends of the sewing machine needle (6) are provided with grooves (56) in a symmetrical manner for clamping the protrusions (52), and a hole is formed below the installation cavity (57) for the sewing machine needle (6) to pass through.

5. The machine head device for sewing equipment for fabric processing according to claim 1, characterized in that, The pressing mechanism (7) comprises a presser foot (77) for pressing the fabric and a fixed plate (71) for supporting the presser foot (77), the fixed plate (71) is fixedly connected below the lower plane (13), the fixed plate (71) is fixedly connected with the presser foot (77) and the pressing spring (74), one side of the lower end of the fixed plate (71) is fixedly connected with a threaded sleeve (73), the threaded sleeve (73) is threadedly inserted with a threaded shaft (72), the lower end of the threaded shaft (72) is rotatably connected with an upper magnetic block (75), the presser foot (77) is installed with a lower magnetic block (78) at a position corresponding to the upper magnetic block (75), and the upper magnetic block (75) and the lower magnetic block (78) are in a magnetic repulsion relationship.

6. The machine head device of a sewing apparatus for fabric processing according to claim 5, wherein The two sides of the pressing spring (74) are symmetrically provided with insertion shafts (76), one end of each of the insertion shafts (76) is fixedly connected with the presser foot (77), and the other end of each of the insertion shafts (76) is slidably inserted into the fixed plate (71), and the presser foot (77) is located directly below the sewing machine needle (6).

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