Composite connecting rod double-acting button sewing machine

Abstract

The invention relates to a composite connecting rod double-acting button sewing machine which comprises a rack, a driving motor is arranged at the top of the rack, an output shaft of the driving motor is sleeved with a driving cam, the driving cam is provided with a first output shaft and a second output shaft, and the phase angle of the second output shaft lags behind the phase angle of the first output shaft. The second output shaft is sleeved with the upper end of a driving arm, the lower end of the driving arm is connected with a button sewing sleeve rod, the button sewing sleeve rod is connected with the rack through a longitudinal guide mechanism, and a guide hole axially penetrating through the button sewing sleeve rod is formed in the button sewing sleeve rod; the first output shaft is movably connected with the punching rod through a connecting rod, and the lower portion of the punching rod is contained in the guide hole. A punching punch and a button sewing punch are arranged at the lower ends of the punching rod and the button sewing sleeve rod; punching and button sewing are completed at a time through the phase difference of the output ends of the double output cams by adopting one driving motor, and the punching and button sewing mechanism has the advantages of being compact in structure, high in efficiency and good in synchronism.

Description

Technical Field

[0001] The present invention relates to a button sewing machine, specifically a compound link double-acting button sewing machine. Background Art

[0002] Currently, when installing a ring-shaped button (commonly known as a cornscrew button), a button sewing machine usually completes the operation in two steps: punching a hole first and then sewing the button. Therefore, the button sewing machine needs to be provided with a button sewing punch and a punching punch, and two sets of driving mechanisms are also required to drive the button sewing punch and the punching punch respectively. The structure of the button sewing machine is relatively complex, and the two impact operations also reduce the working efficiency.

[0003] In addition, the utility model patent with the publication number of CN213096350U provides an automatic button sewing machine, which includes a frame. An upper riveting die assembly, a lower riveting die assembly, an upper die driving assembly, a button feeding mechanism, and a lower button feeding mechanism are respectively arranged on the frame. An upper button receiving mechanism and a lower button receiving mechanism are installed on the frame. The upper button receiving mechanism is located between the lower riveting die assembly and the upper riveting die assembly. The lower riveting die assembly is arranged at the lower button receiving mechanism and is directly below the upper riveting die assembly. The upper die driving assembly includes a primary driving member and a secondary driving member. The upper riveting die assembly includes a hollow shaft sleeve and an upper button base. The secondary driving member drives the hollow shaft sleeve to reciprocate in the direction of the lower riveting die assembly. The primary driving member is connected with a punching rod. The punching rod is located directly above the lower riveting die assembly and slides in the hollow shaft sleeve. When punching, the punching rod penetrates the upper button base. This application realizes the automatic button sewing action and has the effects of safe operation and high processing efficiency.

[0004] The punching rod and the upper button base of the above button sewing machine are driven by a primary servo motor and a secondary servo motor, so the structure is relatively complex and the cost is relatively high. When the two motors work, there is a certain requirement for the electrical control due to the time difference between the front and the back. Summary of the Invention

[0005] The object of the present invention is a compound link double-acting button sewing machine. The punches of the button sewing sleeve rod and the punching rod are connected to the same driving motor through a double-output cam. The present invention uses one driving motor to complete punching and button sewing at one time through the phase difference of the output ends of the double-output cam, and has the characteristics of compact structure, high efficiency, and good synchronism.

[0006] The following technical solutions are adopted to achieve the above object: A compound connecting rod double-acting button sewing machine, comprising a frame, a driving motor is arranged at the top of the frame, a driving cam is sleeved on the output shaft of the driving motor, and it is characterized in that: the driving cam has a first output shaft and a second output shaft, the axial directions of the first output shaft and the second output shaft are parallel to the axial direction of the output shaft of the driving motor, the phase angle of the second output shaft lags behind the phase angle of the first output shaft, the upper end of a driving arm is sleeved on the second output shaft, the lower end of the driving arm is connected with a button sewing sleeve rod, the button sewing sleeve rod is connected with the frame through a longitudinal guiding mechanism, and a guiding hole axially penetrating through the button sewing sleeve rod is arranged on the button sewing sleeve rod; the first output shaft is movably connected with a punching rod through a connecting rod, and the lower part of the punching rod is accommodated in the guiding hole; a punching punch and a button sewing punch are arranged at the lower ends of the punching rod and the button sewing sleeve rod, and a button sewing die is further arranged on the base of the frame directly below the punching rod and the button sewing sleeve rod.

[0007] The longitudinal guiding mechanism includes a longitudinal slide rail and a slider. A button feeding mechanism is arranged on one side of the frame. The button feeding mechanism has a button feeding slide rail. The button feeding slide rail is hinged on the button feeding mechanism. The upper end of the button feeding slide rail corresponds to the output end of the button feeding mechanism. The lower end part of the button feeding slide rail is directly below the button sewing sleeve rod and is directly above the button sewing die. A linkage abutting part is arranged in the middle of the button feeding slide rail. The slider is fixedly connected with the button sewing sleeve rod. An inclined surface is arranged at the position of the slider corresponding to the linkage abutting part. An automatic reset mechanism is arranged between the button feeding slide rail and the button feeding mechanism. The automatic reset mechanism drives the linkage abutting part of the button feeding slide rail to abut against the inclined surface.

[0008] A punching rod avoidance groove is arranged at the lower end part of the button feeding slide rail, and the width of the avoidance groove is larger than the outer diameter of the punching rod.

[0009] The driving cam includes a cam body. A second output shaft coaxial with the cam body is arranged at one end of the cam body. A rotating shaft hole and a first output shaft hole are further arranged on the cam body. The axial directions of the rotating shaft hole and the first output shaft hole are offset relative to the axial direction of the cam body. The output end of the driving motor is connected to the rotating shaft hole, and a first output shaft is arranged in the first output shaft hole.

[0010] The present invention uses one driving motor to utilize the phase difference between the two output ends of the double-output cam, so that the punching action of the punching rod is earlier than the button sewing action of the button sewing sleeve rod, realizing the punching and button sewing in one go. Compared with the existing double-power structure, it has the characteristics of more compact structure, high efficiency and good synchronism. Brief Description of the Drawings

[0011] Figure 1 is a schematic internal structure diagram of the present invention; Figure 2 is a schematic internal structure diagram of the present invention in another direction; Figure 3 is a schematic internal structure diagram of the driving cam of the present invention. Detailed implementation mode

[0012] As shown Figures 1-3 in the figure, a compound connecting rod double-acting button sewing machine includes a frame 1. A driving motor 2 is provided at the top of the frame 1. A driving cam 3 is sleeved on the output shaft 21 of the driving motor 2. The driving cam 3 includes a cam body 30. A second output shaft 32 coaxial with the cam body 30 is provided at one end of the cam body 30. A rotating shaft hole 33 and a first output shaft hole 34 are also formed in the cam body 30. The axial directions of the rotating shaft hole 32 and the first output shaft hole 3 are offset relative to the axial direction of the cam body 30. The output end of the driving motor 2 is connected to the rotating shaft hole 33. A first output shaft 31 is arranged in the first output shaft hole 34. The axial directions of the first output shaft 31 and the second output shaft 32 are parallel to the axial direction of the output shaft of the driving motor 2. The phase angle of the second output shaft 32 lags behind the phase angle of the first output shaft 31. The upper end of a driving arm 4 is sleeved on the second output shaft 32. The lower end of the driving arm 4 is connected to a button sewing sleeve rod 5. The button sewing sleeve rod 5 is connected to the frame 1 through a longitudinal guiding mechanism 7. A guiding hole axially penetrating the button sewing sleeve rod 5 is provided on the button sewing sleeve rod 5. The first output shaft 31 is movably connected to a punching rod 8 through a connecting rod 6. The lower part of the punching rod 8 is accommodated in the guiding hole. Punching heads 81 and button sewing heads 51 are provided at the lower ends of the punching rod 8 and the button sewing sleeve rod 5. A button sewing die 11 is also provided on the base of the frame 1 directly below the punching head 81 and the button sewing head 51.

[0013] The longitudinal guiding mechanism 7 includes a longitudinal slide rail 71 and a slider 72. A button feeding mechanism 9 is arranged on one side of the frame 1. The button feeding mechanism 9 has a button feeding slide rail 91. The button feeding slide rail 91 is hinged on the button feeding mechanism 9. The upper end of the button feeding slide rail 91 corresponds to the output end of the button feeding mechanism 9. The lower end part of the button feeding slide rail 91 is located directly below the button sewing sleeve rod 5 and directly above the button sewing die 11. An avoidance groove for the punching head 81 is formed at the lower end part of the button feeding slide rail 81. The width of the avoidance groove is greater than the outer diameter of the punching head 81. A linkage abutting part 92 is arranged in the middle of the button feeding slide rail 91. The slider 72 is fixedly connected to the button sewing sleeve rod 5. An inclined surface 73 is formed at the position of the slider 72 corresponding to the linkage abutting part 92. An automatic reset mechanism is arranged between the button feeding slide rail and the button feeding mechanism. The automatic reset mechanism drives the linkage abutting part 92 of the button feeding slide rail 71 to abut against the inclined surface 73.

[0014] When the present invention works, the annular buttons are arranged on the button feeding slide rail 91 by the button feeding mechanism 9. The driving motor 2 is started. Since the phase angle of the second output shaft 32 lags behind the phase angle of the first output shaft 31, the first output shaft 31 drives the punching rod 8 and the punching punch 81 to start first through the connecting rod 6. The punching punch 81 is pre-pressed down through the button center hole and the avoidance groove at the lower end of the button feeding slide rail 91. Immediately afterwards, the second output shaft 32 drives the button nailing sleeve rod 5 and the button nailing punch 51 to press down through the driving arm 4 to grab the lowermost annular button. At the same time, the button nailing sleeve rod 5 cooperates with the linkage abutting portion 92 through the inclined surface 73 of the slider 72 to push open the button feeding slide rail 81, creating space for the button nailing sleeve rod 5 and the button nailing punch 51. Then the punching punch 81 pre-punches a through hole at the button nailing position of the fabric and then starts to reset in advance. Then the button nailing punch 51 cooperates with the lower button nailing die 11 with the annular button to complete the button nailing operation. After the button nailing operation is completed, the button nailing sleeve rod 5 and the button nailing punch 51 also immediately reset. After the button nailing sleeve rod 5 resets in place, the lower end of the button feeding slide rail 91 automatically returns to directly below the button nailing punch 51 under the action of the automatic reset mechanism to wait for the next operation.

[0015] With the present invention, a driving motor utilizes the phase difference between the two output ends of the double-output cam to make the punching action slightly earlier than the button nailing punch action, realizing the completion of pre-punching and then immediately button nailing in one stamping action. Compared with the existing double-power structure, the present invention has the characteristics of more compact structure, high efficiency and good synchronism.

Claims

1. A compound connecting rod double-acting button sewing machine, comprising a frame (1), a driving motor (2) is arranged at the top of the frame (1), and a driving cam (3) is sleeved on the output shaft (21) of the driving motor (2), characterized in that: The driving cam (3) has a first output shaft (31) and a second output shaft (32). The axial directions of the first output shaft (31) and the second output shaft (32) are parallel to the axial direction of the output shaft of the driving motor (2). The phase angle of the second output shaft (32) lags behind the phase angle of the first output shaft (31). The upper end of a driving arm (4) is sleeved on the second output shaft (32). The lower end of the driving arm (4) is connected to a button nailing sleeve rod (5). The button nailing sleeve rod (5) is connected to the frame (1) through a longitudinal guiding mechanism (7). A guiding hole axially penetrating the button nailing sleeve rod (5) is provided on the button nailing sleeve rod (5). The first output shaft (31) is movably connected to a punching rod (8) through a connecting rod (6). The lower part of the punching rod (8) is accommodated in the guiding hole. A punching punch (81) and a button nailing punch (51) are provided at the lower ends of the punching rod (8) and the button nailing sleeve rod (5). A button nailing die (11) is further provided on the base of the frame (1) directly below the punching punch (81) and the button nailing punch (51).

2. The composite connecting rod double-acting button sewing machine according to claim 1, wherein: The longitudinal guiding mechanism (7) includes a longitudinal sliding rail (71) and a sliding block (72). A button feeding mechanism (9) is arranged on one side of the frame (1). The button feeding mechanism (9) has a button feeding sliding rail (91). The button feeding sliding rail (91) is hinged on the button feeding mechanism (9). The upper end of the button feeding sliding rail (91) corresponds to the output end of the button feeding mechanism (9). The lower end part of the button feeding sliding rail (91) is located directly below the button nailing sleeve rod (5) and directly above the button nailing die (11). A linkage abutting part (92) is arranged in the middle of the button feeding sliding rail (91). The sliding block (72) is fixedly connected to the button nailing sleeve rod (5). An inclined surface (73) is formed at the position of the sliding block (72) corresponding to the linkage abutting part (92). An automatic reset mechanism is arranged between the button feeding sliding rail and the button feeding mechanism. The automatic reset mechanism drives the linkage abutting part (92) of the button feeding sliding rail (71) to abut against the inclined surface (73).

3. The double-action button sewing machine with a composite connecting rod according to claim 1, wherein: A punching punch (81) avoidance groove is formed at the lower end part of the button feeding sliding rail (81). The width of the avoidance groove is larger than the outer diameter of the punching punch (81).

4. A composite connecting rod double-acting button sewing machine according to claim 1, characterized in that: The driving cam (3) includes a cam body (30). A second output shaft (32) coaxial with the cam body (30) is arranged at one end of the cam body (30). A rotating shaft hole (33) and a first output shaft hole (34) are further formed in the cam body (30). The axial directions of the rotating shaft hole (32) and the first output shaft hole (3) are offset relative to the axial direction of the cam body (30). The output end of the driving motor (2) is connected to the rotating shaft hole (33). A first output shaft (31) is arranged in the first output shaft hole (34).

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