An intermediate rotary presser foot mechanism

Abstract

The utility model belongs to bending machine pressure foot mechanism technical field, concretely is a kind of middle rotary pressure foot mechanism, including bottom plate, rotary pressure foot, pressure foot selection mechanism and pressure foot rotating mechanism;Pressure foot selection mechanism includes guide rail, slide, lock pressure foot axle, select pressure foot axle and transverse moving mechanism, guide rail is connected on bottom plate, slide is slidably connected on guide rail, lock pressure foot axle is connected on one side of slide, select pressure foot axle is connected on rotating mechanism;Rotating mechanism includes left support seat, right support seat, rotary coupling and longitudinal moving mechanism, left support seat and right support seat are connected on bottom plate, rotationally connected with pivot between left support seat and right support seat, rotary coupling is connected on pivot;Rotary pressure foot end rotationally connected on pivot, rotary pressure foot is also slidably connected on lock pressure foot axle and select pressure foot axle, and rotary pressure foot array is arranged on pivot;Compared with prior art, the utility model is compact in structure, novel in design, and the selection and assembly of the piece pressure foot are rapid and efficient.

Description

Technical Field

[0001] This utility model relates to the technical field of presser foot mechanism of bending machine, and in particular to an intermediate rotating presser foot mechanism. Background Technology

[0002] In recent years, with the improvement of manufacturing technology and the increase in labor costs, ordinary bending machines have been gradually replaced by automatic bending centers. Automatic bending centers are a product with rapid market development in recent years. Compared with traditional bending machines, they do not require much human assistance. A single machine model can be operated by only one person, who only needs to load and unload materials. The bending center can automatically bend complex and large workpieces, greatly improving labor efficiency and reducing labor intensity.

[0003] The aforementioned automatic bending center's pressing unit can automatically assemble different lengths, either before or during workpiece processing. Assembling different lengths requires fixed pressers of fixed length and sheet pressers that compensate for the length differences between individual fixed pressers. This invention is a compensating sheet presser structure, which is compact, novel in design, and allows for rapid and quick selection and assembly of sheet pressers. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by developing a central rotating presser foot mechanism. It features a compact structure, novel design, and allows for quick and easy selection and assembly of the presser foot.

[0005] The technical solution to the technical problem solved by this utility model is: an intermediate rotating presser foot mechanism, including a base plate, a rotating presser foot, a presser foot selection mechanism and a presser foot rotation mechanism; The presser foot selection mechanism includes a guide rail, a slide, a locking presser foot shaft, a selecting presser foot shaft, and a lateral movement mechanism. The guide rail is connected to the base plate, the slide is slidably connected to the guide rail, the horizontal projection of the slide is an inverted U-shape, the locking presser foot shaft is connected to one side of the slide, and the selecting presser foot shaft is connected to the rotation mechanism. The rotating mechanism includes a left support base, a right support base, a rotating connection, and a longitudinal moving mechanism. The left support base and the right support base are connected to the base plate, and a rotating shaft is rotatably connected between the left support base and the right support base. The rotating connection is connected to the rotating shaft. The end of the rotating presser foot is rotatably connected to the rotating shaft, and the rotating presser foot is also slidably connected to the locking presser foot shaft and the selecting presser foot shaft. The rotating presser foot array is arranged on the side of the rotating connection close to the locking presser foot shaft.

[0006] Preferably, the lateral movement mechanism includes a geared motor, a lateral gear, and a lateral rack. The geared motor is connected to the base plate via a base, the lateral gear is connected to the output shaft of the geared motor, the lateral gear is mounted on a slide, and the lateral gear meshes with the lateral rack.

[0007] Preferably, a limiting seat is provided on the side of the machine base near the pressure foot shaft.

[0008] Preferably, the longitudinal moving mechanism includes a cylinder, a longitudinal gear, and a longitudinal rack. The cylinder is connected to the base plate via a bracket, the longitudinal rack is slidably connected to the base plate via a slide rail, the longitudinal rack is connected to the output shaft of the cylinder via a rack connecting block, the longitudinal gear is connected to the rotating shaft, and the longitudinal gear meshes with the longitudinal rack.

[0009] Preferably, a limit block is provided on the base plate near the rotary connection.

[0010] Preferably, retaining rings are provided at both ends of the rotating shaft.

[0011] Preferably, the base plate is provided with a lever.

[0012] The effects provided in the utility model description are merely those of the embodiments, and not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects: 1. This solution allows for the selection of the required number of rotating presser feet via a lateral movement mechanism and the unscrewing of the rotating presser feet via a longitudinal rotation mechanism to work with a polygonal bending machine. The number of rotating presser feet is selected by the lateral position of the slider. The locking presser foot shaft and the selecting presser foot shaft are in contact and coaxial. The lateral movement of the slider can control the number of rotating presser feet on the selecting presser foot shaft and rotate together with the rotating connection. Due to the mutual pressure between the rotating presser feet, and with the locking presser foot shaft, the rotating presser feet remaining on the locking presser foot shaft will not fall off. 2. By setting a limit seat, it is possible to prevent the slider from moving excessively away from the rotary joint, thereby compressing the rotary joint and rotary pressure foot and ensuring equipment safety; 3. By setting limit blocks, the stability of the rotary connection after downward rotation can be better controlled; 4. By installing retaining rings on both sides of the rotating shaft, longitudinal movement of the rotating shaft can be prevented, thus improving the stability of equipment operation; 5. By setting the lever, the number of presser feet on the polygonal bending machine can be adjusted as needed, thereby adjusting the bending width. Attached Figure Description

[0013] Figure 1 This is the front view of the present invention; Figure 2 This is a partial cross-sectional view of the shaft. Figure 3 This is the left view of the present invention; Figure 4 This is the right view of the present invention; Figure 5 The overall structure of this utility model Figure 1 ; Figure 6 The overall structure of this utility model Figure 2 .

[0014] The components are as follows: 1. Base plate; 2. Gear motor; 21. Machine base; 3. Guide rail; 31. Slider; 4. Limit seat; 5. Locking foot shaft; 6. Left support seat; 7. Rotating press foot; 8. Rotating connection; 9. Selecting press foot shaft; 10. Limit block; 11. Toggle block; 12. Right support seat; 13. Horizontal gear; 14. Horizontal rack; 15. Cylinder; 151. Bracket; 16. Longitudinal gear; 17. Longitudinal rack; 171. Rack connecting block; 18. Rotating shaft; 19. Retaining ring. Detailed Implementation

[0015] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0016] Example 1 See Figures 1 to 6 A central rotating presser foot mechanism includes a base plate 1, a rotating presser foot 7, a presser foot selection mechanism, and a presser foot rotation mechanism; The presser foot selection mechanism includes a guide rail 3, a slide, a locking presser foot shaft 5, a selecting presser foot shaft 9, and a lateral movement mechanism. The guide rail 3 is connected to the base plate 1, the slide is slidably connected to the guide rail 3, and the horizontal projection of the slide is an inverted U-shape. The locking presser foot shaft 5 is connected to one side of the slide, and the selecting presser foot shaft 9 is connected to the rotation mechanism. The rotating mechanism includes a left support seat 6, a right support seat 12, a rotating connection 8, and a longitudinal moving mechanism. The left support seat 6 and the right support seat 12 are connected to the base plate 1. A rotating shaft 18 is rotatably connected between the left support seat 6 and the right support seat 12. The rotating connection 8 is connected to the rotating shaft 18. The end of the rotating presser foot 7 is rotatably connected to the rotating shaft 18. The rotating presser foot 7 is also slidably connected to the locking presser foot shaft 5 and the selecting presser foot shaft 9. The rotating presser foot 7 array is arranged on the side of the rotating connection 8 near the locking presser foot shaft 5.

[0017] The lateral movement mechanism includes a reduction motor 2, a lateral gear 13, and a lateral rack 14. The reduction motor 2 is connected to the base plate 1 via a base 21. The lateral gear 13 is connected to the output shaft of the reduction motor 2. The lateral gear 13 is mounted on a slide block and meshes with the lateral rack 14.

[0018] A limit seat 4 is provided on the side of the base 21 near the pressure foot shaft 9.

[0019] The longitudinal moving mechanism includes a cylinder 15, a longitudinal gear 16, and a longitudinal rack 17. The cylinder 15 is connected to the base plate 1 via a bracket 151. The longitudinal rack 17 is slidably connected to the base plate 1 via a slide rail. The longitudinal rack 17 is connected to the output shaft of the cylinder 15 via a rack connecting block 171. The longitudinal gear 16 is connected to the rotating shaft 18, and the longitudinal gear 16 meshes with the longitudinal rack 17.

[0020] A limit block 10 is provided on the base plate 1 near the rotary connection 8.

[0021] Both ends of the rotating shaft 18 are provided with retaining rings 19.

[0022] A lever 11 is provided on the base plate 1.

[0023] Working principle The through hole of the rotating presser foot 7 can slide simultaneously on the locking presser foot shaft 5 and the selecting presser foot shaft 9; the two shafts are in contact and coaxial at the selection station, which facilitates the transfer and sorting of the sheet presser foot between the two shafts.

[0024] The limit seat 4 is located on the side near the selector foot shaft 9, serving as a physical stop for the lateral movement of the slide to prevent overtravel from causing mutual squeezing between the rotary connection 8 and the presser foot.

[0025] The rotary connector 8 is fixed on the rotating shaft 18 and connected to the selected rotary presser foot 7, and rotates downward and returns to its original position along with the rotating shaft 18.

[0026] The limiting block 10 is located on the base plate 1 near the rotary connection 8, and is used as a rigid limit for the lower end point to ensure end position consistency and stability.

[0027] The end of the rotating presser foot 7 is rotatably connected to the rotating shaft 18 and can slide on the locking presser foot shaft 5 and the selective presser foot shaft 9; the array is set on the side of the rotating connection 8 near the locking presser foot shaft 5, and the pieces press against each other to improve the overall support and anti-detachment ability.

[0028] When selecting a workstation, the locking foot shaft 5 contacts and is coaxial with the selecting foot shaft 9, and the through hole of the rotating foot 7 aligns with the two shafts to form a continuous channel. The reduction motor 2 drives the transverse gear 13 to rotate, and the transverse rack 14 drives the slide to move laterally. The position of the slide determines the number of rotating foot 7 pieces that can pass over the edge of the rotating connection 8 and fit into the selecting foot shaft 9; the remaining pieces are still supported by the locking foot shaft 5. The pieces of the rotating foot shaft abut against each other, and the unselected pieces will not slip off because they are still fitted on the locking foot shaft 5 and are pressed by the adjacent pieces. The slide contacts the limiting seat 4 to form a rigid stop, preventing excessive compression or jamming of the piece array due to excessive distance from the rotating connection 8.

[0029] After the rotating presser foot 7 selects the workpiece, the cylinder 15 outputs linearly, pushing and pulling the longitudinal rack 17 and longitudinal gear 16 via the rack and pinion connecting block 171, driving the rotating shaft 18 to rotate. The rotating connection 8 then drives the selected workpiece to rotate downwards to the pressing position. The rotating connection 8 touches the limit block 10 to form a lower hard limit, ensuring a stable and consistent pressing angle each time. During the return stroke, the cylinder 15 drives the workpiece to return to the upper position in the opposite direction. The retaining rings 19 at both ends of the rotating shaft 18 restrict axial displacement to prevent cross-movement during frequent forward and reverse rotations, maintaining the stable meshing of the longitudinal gear 16 and longitudinal rack 17 and the stable pressing trajectory. When the selected workpiece participates in the rotation, only the workpiece fitted on the presser foot shaft 9 rotates downwards synchronously with the rotating connection 8 and presses the workpiece; the workpiece remaining on the locking presser foot shaft 5 remains in its original position to avoid ineffective participation and interference.

[0030] After bending is completed, cylinder 15 returns to its original position, and shaft 18 and rotary connection 8 return to their upper position. If the bending width needs to be changed, i.e., the number of rotating presser feet 7 needs to be changed, the slide is moved laterally to the new set position, and the above principle is repeated to complete the process.

[0031] Detailed operating procedures The lateral movement mechanism is activated, and the slide moves along guide rail 3 to the selected workstation. Once in position, the locking foot shaft 5 contacts and is coaxial with the selecting foot shaft 9; the slide is then moved at low speed, causing the required number of rotating foot 7 to sequentially cross the connection boundary and fit onto the selecting foot shaft 9. The selected piece has fallen onto the selecting foot shaft 9, while the unselected pieces remain on the locking foot shaft 5, and the piece array is stably pressed against each other.

[0032] The cylinder 15 is activated, driving the longitudinal rack 17. The longitudinal rack 17 drives the longitudinal gear 16 to rotate, which in turn drives the rotating shaft 18 to rotate. The rotating connection 8 carries the selected piece downwards. After touching the limit block 10, it maintains its position, achieving stable pressing of the workpiece; the bending process is completed synchronously with the bending center.

[0033] After bending is completed, the cylinder returns to its original position after 15 strokes, and the rotating connection returns to its upper position after 8 strokes; the workpiece is released from pressure and can proceed to the next process or be removed.

[0034] To adjust the bending width, simply repeat the above steps.

[0035] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not a limitation on the scope of protection of the present utility model. Based on the technical solution of the present utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the present utility model.

Claims

1. A central rotating presser foot mechanism, comprising a base plate (1), characterized in that: It also includes a rotating presser foot (7), a presser foot selection mechanism, and a presser foot rotation mechanism; The presser foot selection mechanism includes a guide rail (3), a slide, a locking presser foot shaft (5), a selecting presser foot shaft (9), and a lateral movement mechanism. The guide rail (3) is connected to the base plate (1), the slide is slidably connected to the guide rail (3), the horizontal projection of the slide is an inverted U-shape, the locking presser foot shaft (5) is connected to one side of the slide, and the selecting presser foot shaft (9) is connected to the rotation mechanism. The rotating mechanism includes a left support seat (6), a right support seat (12), a rotating connection (8), and a longitudinal moving mechanism. The left support seat (6) and the right support seat (12) are connected to the base plate (1). A rotating shaft (18) is rotatably connected between the left support seat (6) and the right support seat (12). The rotating connection (8) is connected to the rotating shaft (18). The end of the rotating presser foot (7) is rotatably connected to the rotating shaft (18). The rotating presser foot (7) is also slidably connected to the locking presser foot shaft (5) and the selecting presser foot shaft (9). The rotating presser foot (7) array is arranged on the side of the rotating connection (8) close to the locking presser foot shaft (5).

2. The intermediate rotating presser foot mechanism according to claim 1, characterized in that, The lateral movement mechanism includes a geared motor (2), a lateral gear (13) and a lateral rack (14). The geared motor (2) is connected to the base plate (1) via a base (21). The lateral gear (13) is connected to the output shaft of the geared motor (2). The lateral gear (13) is mounted on a slide block. The lateral gear (13) meshes with the lateral rack (14).

3. The intermediate rotating presser foot mechanism according to claim 2, characterized in that, A limit seat (4) is provided on the side of the base (21) near the pressure foot shaft (9).

4. The intermediate rotating presser foot mechanism according to claim 1, characterized in that, The longitudinal moving mechanism includes a cylinder (15), a longitudinal gear (16), and a longitudinal rack (17). The cylinder (15) is connected to the base plate (1) via a bracket (151). The longitudinal rack (17) is slidably connected to the base plate (1) via a slide rail. The longitudinal rack (17) is connected to the output shaft of the cylinder (15) via a rack connecting block (171). The longitudinal gear (16) is connected to the rotating shaft (18). The longitudinal gear (16) meshes with the longitudinal rack (17).

5. The intermediate rotating presser foot mechanism according to claim 4, characterized in that, A limit block (10) is provided on the base plate (1) near the rotary connection (8).

6. The intermediate rotating presser foot mechanism according to claim 1, characterized in that, Both ends of the rotating shaft (18) are provided with retaining rings (19).

7. The intermediate rotating presser foot mechanism according to claim 1, characterized in that, A lever (11) is provided on the base plate (1).

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