Presser foot mechanism for sewing machine

Abstract

The utility model provides a presser foot mechanism for a sewing machine, and belongs to the technical field of sewing machines. A presser foot mechanism for a sewing machine comprises a machine body and a rack, the rack is installed on the machine body, a sewing table plate is installed on the machine body, a sliding adjusting frame is further installed on the machine body, a first guide rail is installed in the sliding adjusting frame, a first sliding seat is arranged on the first guide rail in a sliding mode, and a second sliding seat is arranged on the first sliding seat. A presser foot frame is fixed on the first sliding seat, the front end of the presser foot frame is detachably connected with a presser foot plate, and a limiting hole is formed in the plate surface of the presser foot plate; a groove is formed in the machine frame, a partition plate is installed in the groove and divides the groove into two adjusting grooves of the same size, a second guide rail is installed in each adjusting groove, and a second sliding seat is arranged on each second guide rail in a sliding mode. The sewing machine has the advantage of higher sewing quality.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewing machines, and particularly relates to a presser foot mechanism for a sewing machine. Background Technique

[0002] In the textile industry, the presser foot of a sewing machine is an essential component in the feeding mechanism of the sewing machine, which is used to apply pressure on the surface of the sewing material. The presser feet used in existing sewing machines are generally fixedly arranged on the sewing machine. When an operator sews the fabric, the operator needs to manually and continuously adjust the front and back positions of the fabric slightly. For the operator to adjust such a precise position manually, it requires a great deal of concentration and manual labor of the operator. Poor adjustment will result in poor sewing effect and affect the sewing quality. Summary of the Invention

[0003] The purpose of the utility model is to address the above problems existing in the prior art and propose a presser foot mechanism for a sewing machine, which has the advantage of higher sewing quality.

[0004] The purpose of the utility model can be achieved by the following technical solutions: A presser foot mechanism for a sewing machine includes a machine body and a frame. The frame is installed on the machine body. A sewing table board is installed on the machine body. A sliding adjustment frame is also installed on the machine body. A first guide rail is installed inside the sliding adjustment frame. A first sliding seat is slidably arranged on the first guide rail. A presser foot frame is fixed on the first sliding seat. The front end of the presser foot frame is detachably connected with a presser foot plate. The surface of the presser foot plate has a limiting hole.

[0005] A groove is formed inside the frame. A partition board is installed in the groove, dividing the groove into two adjustment grooves of the same size. A second guide rail is installed in each adjustment groove. A second sliding seat is slidably arranged on the second guide rail. A first connecting cylinder is fixed on the second sliding seat. The connecting rod on the first connecting cylinder is fixed to the upper end of the presser foot frame. A hydraulic cylinder is also installed on the frame. The piston rod of the hydraulic cylinder is connected to the rear end of the presser foot frame, which is used to move the presser foot frame forward or backward.

[0006] A sewing needle cylinder is installed at one end of the frame, and the sewing needle cylinder is aligned downward with the limiting hole of the presser foot plate.

[0007] Preferably, a first mounting plate is installed at the front end of the presser foot frame. A supporting frame is installed on the first mounting plate. The presser foot plate can be inserted into the supporting frame. The presser foot plate is fixed to the first mounting plate by a first screw.

[0008] Preferably, one side of the presser foot plate has a clamping portion. A clamping groove is formed inside the supporting frame. The clamping portion is clamped and limited with the clamping groove.

[0009] Preferably, a number of limiting parts are symmetrically provided on the inner side wall of the side of the supporting frame away from the first mounting plate. The clamping part is provided with a limiting groove, and the limiting part is clamped and limited with the limiting groove.

[0010] Preferably, a support rod is further fixed to the front end of the frame, and a transparent observation plate is fixed to the support rod.

[0011] Preferably, the sliding direction of the first sliding seat, the sliding direction of the second sliding seat are synchronized with the pushing direction of the piston rod of the hydraulic cylinder.

[0012] Preferably, second mounting plates are further installed on both sides of the presser foot frame, and shock-absorbing parts are installed between the second mounting plates and the first sliding seat for shock absorption.

[0013] Preferably, a control panel is installed on one side of the frame.

[0014] Compared with the prior art, the advantages of the present utility model are as follows: By providing a presser foot frame and a presser foot plate that can move forward or backward, it is beneficial to improve the sewing effect of the sewing machine, automatically sew from front to back, greatly reduce the labor required by workers, improve the sewing quality at the same time, have a higher degree of mechanization, and are more convenient and efficient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a side view of the present utility model.

[0016] Figure 2 is a side sectional view of the present utility model.

[0017] Figure 3 is a partial structural view of the presser foot frame, presser foot plate, sewing table plate and sewing needle cylinder parts of the present utility model.

[0018] Figure 4 is a partial top view of the supporting frame of the presser foot frame of the present utility model.

[0019] Figure 5 is the bottom view of the presser foot plate of the present utility model

[0020] In the figure, 2, the machine body; 21, the sewing table plate; 22, the sliding adjustment frame; 23, the first guide rail; 24, the first sliding seat; 25, the presser foot frame; 26, the presser foot plate; 261, the limiting hole; 3, the frame; 31, the adjustment groove; 32, the partition; 33, the second guide rail; 34, the second sliding seat; 35, the first connecting cylinder; 36, the hydraulic cylinder; 4, the sewing needle cylinder; 51, the first mounting plate; 52, the supporting frame; 521, the limiting part; 53, the first screw; 54, the clamping part; 541, the limiting groove; 55, the clamping groove; 61, the support rod; 62, the transparent observation plate; 63, the shock-absorbing part; 64, the second mounting plate; 7, the control panel. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] As Figures 1 to 5 shown, a presser foot mechanism for a sewing machine includes a machine body 2 and a frame 3. The frame 3 is installed on the machine body 2. A sewing table board 21 is installed on the machine body 2. A sliding adjustment frame 22 is also installed on the machine body 2. A first guide rail 23 is installed inside the frame of the sliding adjustment frame 22. A first sliding seat 24 is slidably arranged on the first guide rail 23. A presser foot frame 25 is fixed on the first sliding seat 24. A presser foot plate 26 is detachably connected to the front end of the presser foot frame 25. A limit hole 261 is provided on the surface of the presser foot plate 26;

[0023] A groove is formed inside the frame 3. A partition 32 is installed in the groove, dividing the groove into two adjustment grooves 31 of the same size. A second guide rail 33 is installed in each adjustment groove 31. A second sliding seat 34 is slidably arranged on the second guide rail 33. A first connecting cylinder 35 is fixed on the second sliding seat 34. The connecting rod on the first connecting cylinder 35 is fixed to the upper end of the presser foot frame 25. A hydraulic cylinder 36 is also installed on the frame 3. The piston rod of the hydraulic cylinder 36 is connected to the rear end of the presser foot frame 25 for moving the presser foot frame 25 forward or backward;

[0024] A sewing needle cylinder 4 is also installed at one end of the frame 3. The sewing needle cylinder 4 is aligned downward with the limit hole 261 of the presser foot plate 26.

[0025] With the above structure, the operator places the fabric on the sewing table board 21. Since the presser foot board 26 is detachably arranged on the presser foot holder 25, the presser foot board 26 with different specifications of the limiting holes 261 can be installed according to different sewing requirements. Just place the fabric on the sewing table board 21 so that the limiting holes 261 of the presser foot board 26 are aligned with the parts of the fabric that need to be sewn. The operator presses both sides of the fabric to fix it. At the same time, the hydraulic cylinder 36 is started to drive the presser foot holder 25 on the piston rod of the hydraulic cylinder 36 to move forward or backward. At this time, the second sliding seat 34 above the presser foot holder 25 and the first sliding seat 24 below the presser foot holder 25 move forward or backward synchronously. The sewing needle cylinder 4 is started so that the sewing needle cylinder 4 can sew in the limiting holes 261 of the presser foot board 26 according to the preset sewing route. According to the different specifications of the limiting holes 261 on the installed presser foot board 26, the front and back sewing areas of the sewing needle cylinder 4 are set in advance, and the sewing is automatically completed, which is beneficial to improving the sewing effect of the sewing machine, automatically sewing from front to back, greatly reducing the labor required by manual work, improving the sewing quality at the same time, having a higher degree of mechanization and being more convenient and efficient in operation.

[0026] Specifically, as Figures 1 to 5 shown, a first mounting plate 51 is installed at the front end of the presser foot holder 25. A supporting frame 52 is installed on the first mounting plate 51. The presser foot board 26 can be inserted into the supporting frame 52. The presser foot board 26 is fixed to the first mounting plate 51 by a first screw 53. By clamping the presser foot board 26 in the supporting frame 52 and fixing it with the first screw 53, it is beneficial to make the fixing more reliable during fixation, with a simple structure, preventing loosening or falling, being safe and stable, and having a longer service life.

[0027] As Figures 1 to 5 shown, one side of the presser foot board 26 has a clamping portion 54, and a clamping groove 55 is provided in the supporting frame 52. The clamping portion 54 is clamped and limited with the clamping groove 55. A plurality of limiting portions 521 are symmetrically provided on the inner side wall of the supporting frame 52 away from the first mounting plate 51. A limiting groove 541 is provided on the clamping portion 54. The limiting portions 521 are clamped and limited with the limiting groove 541.

[0028] By providing a plurality of limiting portions 521 on the inner side wall of the supporting frame 52 away from the first mounting plate 51, and at the same time providing a matching limiting groove 541 on the clamping portion 54, when the clamping portion 54 is inserted and installed into the clamping groove 55 of the supporting frame 52, it is beneficial to conveniently snap the clamping portion 54 into the supporting frame 52. After insertion, fixing with the first screw 53 is beneficial to more conveniently fix the presser foot board 26 on the first mounting plate 51 and in the supporting frame, with a simple structure, more reliable fixing, and higher fixing strength.

[0029] As Figures 1 to 5As shown, a support rod 61 is further fixed to the front end of the frame 3, and a transparent observation plate 62 is fixed to the support rod 61. By providing the transparent observation plate 62, it is beneficial to prevent the sewing thread of the sewing needle cylinder 4 and the flocs during cloth sewing from ejecting into the operator's eyes during sewing, which is beneficial to protecting the operator and facilitating real-time observation during sewing.

[0030] As Figures 1 to 5 shown, the sliding direction of the first sliding seat 24, the sliding direction of the second sliding seat 34 are synchronized with the pushing direction of the piston rod of the hydraulic cylinder 36.

[0031] As Figures 1 to 5 shown, second mounting plates 64 are further installed on both sides of the presser foot holder 25, and a shock absorber 63 is installed between the second mounting plate 64 and the first sliding seat 24 for shock absorption.

[0032] In the present utility model, the shock absorber 63 is a prior art, and is a shock absorption device composed of a shock absorption spring and a damper.

[0033] By providing the shock absorber 63 between the second mounting plate 64 and the first sliding seat 24 and on both the left and right sides of the presser foot holder 25, it is beneficial to reduce the vibration generated when the presser foot holder 25 moves, and has a better buffering effect.

[0034] As Figures 1 to 5 shown, a control panel 7 is installed on one side of the frame 3. By providing the control panel 7, the front and back sewing areas of the sewing needle cylinder 4 can be set in advance according to the different specifications of the limit holes 261 on the installed presser foot plate 26, and sewing can be automatically completed, with high automation and mechanization levels, convenient and efficient sewing, and stronger practicability.

[0035] It should be noted that all directional indicators (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indicators will also change accordingly.

[0036] In addition, the descriptions involving "first", "second", etc. in the present invention are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. At the same time, the meaning of "and / or" appearing throughout the text is that it includes three scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] The above components are all common standard parts or parts known to those skilled in the art, and their structures and principles can all be learned by those skilled in the art through technical manuals or by conventional experimental methods.

[0038] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art of the present utility model can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A presser foot mechanism for a sewing machine, comprising a machine body (2) and a frame (3), characterized in that: The machine body (2) is provided with a frame (3), a sewing table (21) is provided with the machine body (2), a sliding adjustment frame (22) is provided with a first guide rail (23) in the sliding adjustment frame (22), a first sliding seat (24) is slidably provided on the first guide rail (23), a presser foot frame (25) is fixed on the first sliding seat (24), a front end of the presser foot frame (25) is detachably connected with a presser foot plate (26), and a limit hole (261) is provided on the plate surface of the presser foot plate (26); A groove is provided in the frame (3), a partition (32) is installed in the groove, dividing the groove into two adjustment grooves (31) of the same size, a second guide rail (33) is installed in each of the adjustment grooves (31), a second sliding seat (34) is slidably arranged on the second guide rail (33), a first connecting cylinder (35) is fixed on the second sliding seat (34), a connecting rod on the first connecting cylinder (35) is fixed to the upper end of the presser foot frame (25), a hydraulic cylinder (36) is also installed on the frame (3), a piston rod of the hydraulic cylinder (36) is connected to the rear end of the presser foot frame (25), and is used to move the presser foot frame (25) forward or backward; A sewing needle cylinder (4) is also mounted on one end of the frame (3), and the sewing needle cylinder (4) is aligned downwardly with a limiting hole (261) of the presser foot plate (26).

2. A presser foot mechanism for a sewing machine according to claim 1, characterized in that: A first mounting plate (51) is mounted on the front end of the presser foot frame (25), a supporting frame (52) is mounted on the first mounting plate (51), a presser foot plate (26) can be inserted into the supporting frame (52), and the presser foot plate (26) is fixed to the first mounting plate (51) by a first screw (53).

3. A presser foot mechanism for a sewing machine according to claim 2, characterized in that: One side of the presser foot plate (26) has a clamping portion (54), the support frame (52) has a clamping groove (55), and the clamping portion (54) and the clamping groove (55) are clamped in a limited position.

4. A presser foot mechanism for a sewing machine according to claim 3, characterized in that: A plurality of limiting portions (521) are symmetrically arranged on the inner side wall of the supporting frame (52) away from the first mounting plate (51), and a limiting groove (541) is provided on the clamping portion (54), and the limiting portion (521) and the limiting groove (541) are clamped and limited.

5. A presser foot mechanism for a sewing machine according to claim 1, characterized in that: A support rod (61) is also fixed to the front end of the frame (3), and a transparent observation plate (62) is fixed to the support rod (61).

6. A presser foot mechanism for a sewing machine according to claim 1, characterized in that: The sliding direction of the first sliding seat (24), the sliding direction of the second sliding seat (34) and the pushing direction of the piston rod of the hydraulic cylinder (36) are synchronized.

7. A presser foot mechanism for a sewing machine according to claim 1, characterized in that: Second mounting plates (64) are also installed on both sides of the presser foot frame (25), and a shock absorbing member (63) is also installed between the second mounting plate (64) and the first sliding seat (24) for shock absorption.

8. A presser foot mechanism for a sewing machine according to claim 1, characterized in that: A control panel (7) is installed on one side of the frame (3).

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