A machine tool for processing metal bending and forming

Abstract

This invention relates to the field of metal processing technology, and in particular to a metal bending and forming device for machine tool processing. The device includes a base, with multiple supports fixedly connected to the center of the upper surface of the base. A rotating seat is fixedly connected to the top of each support. A circular rotating platform is rotatably mounted in the center of the rotating platform. A track is fixedly connected to one side of the rotating platform, and a sliding seat is slidably fitted on the track. A force-applying wheel is rotatably mounted on the top of the sliding seat. A connecting beam is fixedly connected to one side of the rotating platform, and a pressure block is fixedly connected to the end of the connecting beam. A pipe is rotatably mounted in the center of the rotating platform, and a central pin is slidably fitted inside the pipe. The bottom of the central pin has a deflection structure to drive the central pin to deflect after metal bending. The metal bending and forming device provided by this invention changes the contact area between the central pin and the reinforcing bar by deflecting the central pin, thereby preventing deformation of the central pin due to excessively high local temperatures, thus reducing the damage rate of the central pin and extending its service life.

Description

Technical Field

[0001] This invention relates to the field of metal processing technology, and in particular to a machine tool for metal bending and forming. Background Technology

[0002] Reinforcing bars are a common material in the machining industry. When used, reinforcing bars usually need to be bent into specific angles to cooperate with other parts for machining. In the current technology, the bending of reinforcing bars is mostly achieved by bending machines.

[0003] like Figure 1 As shown, this is a common rebar bending machine on the market. During operation, the rebar is clamped between the clamping block and the central pin. A rotating table on the worktable drives a drive wheel to rotate around the central pin. Using the central pin as a fulcrum and the drive wheel as the force application point, pressure is applied to the rebar, causing it to bend under the external force. Furthermore, when bending high-strength rebar, the rebar near the fulcrum is usually heated to reduce its strength, facilitating subsequent bending and shaping.

[0004] However, in existing rebar bending machines, the central pin is in a fixed state. During continuous processing, the deformed part of each rebar will contact the central pin. Since the central pin is fixed, the contact part on the central pin will remain unchanged. The heat generated at the deformed part of the rebar during continuous processing will keep the contact part on the central pin at a high temperature, resulting in a decrease in the strength of the contact part. Furthermore, the rebar will continuously exert force on the contact part during continuous processing, which causes the contact part of the central pin to deform and be damaged rapidly, affecting the service life of the central pin. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a machine tool for metal bending and forming.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a metal bending and forming device for machine tool processing, including a base, a plurality of supports fixedly connected to the middle of the upper surface of the base, a rotating seat fixedly connected to the top of the supports, a circular rotating platform rotatably mounted in the middle of the rotating platform, a track fixedly connected to one side of the rotating platform, a sliding seat slidably fitted on the track, a force-applying wheel rotatably mounted on the top of the sliding seat, a connecting beam fixedly connected to one side of the rotating platform, a pressure block fixedly connected to the end of the connecting beam, a pipe rotatably mounted in the middle of the rotating platform, a central pin slidably fitted inside the pipe, and a deflection structure provided at the bottom of the central pin to drive the central pin to deflect after the metal is bent.

[0008] Preferably, a cylinder seat is fixedly connected to one side of the upper surface of the base, a cylinder is rotatably mounted on the top of the cylinder seat, and the output end of the cylinder is rotatably connected to the bottom of the track.

[0009] Preferably, the deflection structure includes a column, the top of which is fixed to the bottom of a central pin, and a cylindrical rotating platform fixed to the bottom of the column. The rotating platform has a serrated guide groove on its surface. A fastener is fixed to the upper surface of the base, and a guide post is horizontally fixed to the top of the fastener. The end of the guide post is slidably fitted into the guide groove.

[0010] Preferably, the bottom surface of the rotating seat is provided with a linear moving structure to drive the column to perform reciprocating linear motion in the vertical direction. The linear moving structure includes a connecting plate, which is fixed to the bottom surface of the rotating seat. A reciprocating screw is rotatably mounted on the connecting plate. A ring is rotatably mounted on the column. A nut seat is mounted on the side wall of the ring. The reciprocating screw is threadedly engaged with the nut seat.

[0011] Preferably, a first ring gear is fixedly connected to the bottom surface of the rotating platform, a support plate is rotatably mounted on the top of the reciprocating screw, a second ring gear is rotatably mounted on the upper surface of the support plate, the first ring gear meshes with the second ring gear, a plurality of pawls are hinged to the inner wall of the second ring gear, a ratchet is fixedly connected to the top of the reciprocating screw, and the pawls cooperate with the ratchet.

[0012] Preferably, the connecting plate has multiple blind holes inside, and bullet-shaped balls are slidably fitted inside the blind holes. A compression spring is provided inside the blind holes to apply elastic force to the balls. A limit groove is provided on the outer wall of the reciprocating screw, and the balls cooperate with the limit groove.

[0013] Preferably, a plurality of support springs are fixedly connected to the inner wall of the pipe fitting, and a steel brush is fixedly connected to the end of the support spring for cleaning the central pin.

[0014] Preferably, a driven gear is fixedly connected to the outer wall of the pipe fitting, and the driven gear is matched with the second ring gear.

[0015] Preferably, the outer wall of the column is provided with multiple vertical grooves for cleaning the steel brush.

[0016] The metal bending and forming device proposed in this invention has the following advantages: the metal bending and forming device provided by this invention changes the contact position between the central pin and the reinforcing bar by deflecting the central pin, thereby preventing the central pin from deforming due to excessive local temperature, thus reducing the damage rate of the central pin and extending its service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the working principle of a rebar bending machine.

[0018] Figure 2 This invention provides a schematic diagram of the structure of a metal bending and forming device for machine tool processing. Figure 1 .

[0019] Figure 3 This invention provides a schematic diagram of the structure of a metal bending and forming device for machine tool processing. Figure 2 .

[0020] Figure 4 This is a top view of a metal bending and forming apparatus for machine tool processing proposed in this invention.

[0021] Figure 5 This is a schematic diagram of the internal structure of the rotary seat 9 of a metal bending and forming device for machine tool processing proposed in this invention.

[0022] Figure 6 This is a schematic diagram of the internal structure of the rotating table of a metal bending and forming device for machine tool processing proposed in this invention.

[0023] Figure 7 This is a schematic diagram of the internal structure of a pipe component in a metal bending and forming device for machine tool processing proposed in this invention.

[0024] Figure 8 This invention provides a metal bending and forming apparatus for machine tool processing. Figure 7 Enlarged view of point A in the middle.

[0025] Figure 9 This is a schematic diagram of the base of a metal bending and forming device for machine tool processing proposed in this invention.

[0026] Figure 10 This is a schematic diagram of the bottom of the rotating table of a metal bending and forming device for machine tool processing proposed in this invention.

[0027] Figure 11 This is an enlarged view of the internal structure of a pipe fitting in a metal bending and forming device for machine tool processing proposed in this invention.

[0028] Figure 12 This is a schematic diagram of the connecting plate of a metal bending and forming device for machine tool processing proposed in this invention.

[0029] Figure 13 This invention provides a metal bending and forming apparatus for machine tool processing. Figure 12 Enlarged view of section B in the middle.

[0030] In the diagram: 1. Base; 101. Support; 2. Cylinder seat; 3. Cylinder; 4. Rail; 5. Sliding seat; 6. Force-applying wheel; 7. Connecting beam; 8. Pressure block; 9. Rotary seat; 10. Rotating table; 11. Pipe fitting; 12. Central pin; 13. First ring gear; 14. Connecting plate; 15. Reciprocating screw; 16. Ring; 17. Nut seat; 18. Second ring gear; 19. Pawl; 20. Ratchet; 21. Driven gear; 22. Column; 23. Groove; 24. Support spring; 25. Steel brush; 26. Fastener; 27. Guide column; 28. Rotating table; 29. ​​Guide groove; 30. Support plate; 31. Blind hole; 32. Compression spring; 33. Ball; 34. Limiting groove. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] Reference Figures 2-5 A metal bending and forming device for machine tool processing includes a base 1, a plurality of supports 101 fixedly connected to the middle of the upper surface of the base 1, a rotating seat 9 fixedly connected to the top of the supports 101, a circular rotating table 10 rotatably mounted in the middle of the rotating seat 9, a track 4 fixedly connected to one side of the rotating table 10, a cylinder seat 2 fixedly connected to one side of the upper surface of the base 1, a cylinder 3 rotatably mounted on the top of the cylinder seat 2, the output end of the cylinder 3 rotatably connected to the bottom of the track 4, a sliding seat 5 slidably fitted on the track 4, a force-applying wheel 6 rotatably mounted on the top of the sliding seat 5, a connecting beam 7 fixedly connected to one side of the rotating seat 9, a pressure block 8 fixedly connected to the end of the connecting beam 7, and a pipe fitting 11 rotatably mounted in the middle of the rotating table 10, with a central pin 12 slidably fitted inside the pipe fitting 11.

[0033] When the device is working, the reinforcing bar is clamped and fixed between the pressure block 8 and the central pin 12. The rotating table 10 is driven to rotate by the extension and retraction action of the hydraulic cylinder 3. The rotation of the rotating table 10 will cause the force-applying wheel 6 to rotate around the central pin 12. During the rotation, the force-applying wheel 6 will apply pressure to one end of the reinforcing bar, and the reinforcing bar will bend under the action of external force.

[0034] like Figures 6-11 As shown, the bottom of the central pin 12 is provided with a deflection structure to drive the central pin 12 to deflect after the metal is bent. The deflection structure includes a column 22, the top of the column 22 is fixed to the bottom of the central pin 12, and the bottom of the column 22 is fixed to a cylindrical rotating platform 28. The surface of the rotating platform 28 is provided with a serrated guide groove 29. The upper surface of the base 1 is fixed with a fastener 26, and the top of the fastener 26 is horizontally fixed with a guide post 27. The end of the guide post 27 is slidably engaged in the guide groove 29.

[0035] When column 2 reciprocates vertically, it drives the rotary table 28 to move synchronously. Due to the sliding fit between guide column 27 and guide groove 29 on the surface of rotary table 28, and the guide column 27 being fixed under the action of fastener 26, the guiding effect of guide column 27 and guide groove 29 during the vertical reciprocating motion of rotary table 28 will force rotary table 28 to deflect at a certain angle. After the rotary table 28 deflects, it will drive the central pin 12 to deflect through column 22. After the central pin 12 deflects, its contact part with the steel bar will change. After the central pin 12 deflects, the contact part will re-contact the steel bar after a period of time, so that the contact part on the central pin 12 has a cooling time, thereby preventing the contact part of the central pin 12 from being in a high temperature state during continuous processing, reducing the deformation and damage of the central pin 12 due to the decrease in strength at high temperature, and extending the service life of the central pin 12.

[0036] like Figures 11-13 As shown, the bottom surface of the rotary seat 9 is provided with a linear moving structure to drive the column 22 to perform reciprocating linear motion in the vertical direction. The linear moving structure includes a connecting plate 14, which is fixed to the bottom surface of the rotary seat 9. A reciprocating screw 15 is rotatably mounted on the connecting plate 14, and a ring 16 is rotatably mounted on the column 22. A nut seat 17 is mounted on the side wall of the ring 16, and the reciprocating screw 15 is threadedly engaged with the nut seat 17.

[0037] When the reciprocating screw 15 rotates, since the nut seat 17 cannot rotate synchronously with the reciprocating screw 15 and the reciprocating screw 15 is threadedly engaged with the nut seat 17, the reciprocating screw 15 will drive the nut seat 17 to make reciprocating linear motion in the vertical direction during the rotation process, so as to drive the column 22 to make reciprocating linear motion in the vertical direction.

[0038] like Figures 7-11 As shown, a first ring gear 13 is fixedly connected to the bottom surface of the rotating table 10, a support plate 30 is rotatably mounted on the top of the reciprocating screw 15, a second ring gear 18 is rotatably mounted on the upper surface of the support plate 30, the first ring gear 13 meshes with the second ring gear 18, a plurality of pawls 19 are hinged on the inner wall of the second ring gear 18, and a ratchet 20 is fixedly connected to the top of the reciprocating screw 15, the pawls 19 cooperate with the ratchet 20.

[0039] As the rotating platform 10 rotates on the rotating seat 9, it drives the second ring gear 18 to rotate. The rotation of the second ring gear 18 includes both forward and reverse rotation, wherein:

[0040] During the process of the rotating table 10 rotating to drive the force-applying wheel 6 to bend the steel bars, the second ring gear 18 rotates in the forward direction;

[0041] During the process of rotating the turntable 10 to drive the force-applying wheel 6 to separate from the steel bar for resetting, the second ring gear 18 reverses;

[0042] During the forward rotation of the second ring gear 18, due to the presence of the pawl 19 and the ratchet 20, the second ring gear 18 will not drive the reciprocating screw 15 to rotate; while during the reverse rotation of the second ring gear 18, the pawl 19 and the ratchet 20 are considered to be fixedly connected. At this time, the second ring gear 18 will drive the reciprocating screw 15 to rotate, so that the nut seat 17 on the reciprocating screw 15 will perform one reciprocating motion.

[0043] like Figure 12 and Figure 13 As shown, the connecting plate 14 has multiple blind holes 31 inside, and bullet-shaped balls 33 are slidably fitted inside the blind holes 31. A compression spring 32 is provided inside the blind holes 31 to apply elastic force to the balls 33. A limiting groove 34 is provided on the outer wall of the reciprocating screw 15, and the balls 33 cooperate with the limiting groove 34.

[0044] Under the elastic force of the compression spring 32, the ball 33 is located in the limiting groove 34. The ball 33 relies on the elastic force given by the compression spring 32 to limit the reciprocating screw 15 to a certain extent, so as to prevent the reciprocating screw 15 from rotating during the forward rotation of the second ring gear 18.

[0045] like Figure 11 As shown, multiple support springs 24 are fixed to the inner wall of the pipe fitting 11, and steel brushes 25 are fixed to the ends of the support springs 24 for cleaning the central pin 12.

[0046] During the reciprocating linear motion of the column 22 in the vertical direction, the central pin 12 will be driven into the pipe fitting 11. The steel brush 25 inside the pipe fitting 11 will abut against the central pin 12 under the elastic force of the support spring 24 to clean the surface of the central pin 12, thereby preventing impurities and rust on the surface of the steel bar from adhering to the central pin 12 during the bending process.

[0047] like Figure 10 and Figure 11 As shown, a driven gear 21 is fixed to the outer wall of the pipe fitting 11, and the driven gear 21 is matched with the second ring gear 18. During the rotation of the second ring gear 18, the driven gear 21 is driven to rotate, and the rotation of the driven gear 21 drives the pipe fitting 11 to rotate. The steel brush 25 inside the pipe fitting 11 will also rotate accordingly, so that the steel brush 25 performs a scanning motion on the surface of the central pin 12 and the column 22, thereby improving the cleaning quality of the surface of the central pin 12 by the steel brush 25.

[0048] like Figure 11 As shown, multiple grooves 23 are vertically formed on the outer wall of the column 22 for cleaning the steel brush 25. During the scanning motion of the steel brush on the surface of the column 22, the grooves 23 clean the impurities attached to the bristles of the steel brush 25, preventing the impurities on the bristles from secondary contaminating the central pin.

[0049] Working principle:

[0050] When the device is working, the reinforcing bar is clamped and fixed between the pressure block 8 and the central pin 12. The rotating table 10 is driven to rotate by the extension and retraction action of the hydraulic cylinder 3. The rotation of the rotating table 10 will cause the force-applying wheel 6 to rotate around the central pin 12. During the rotation, the force-applying wheel 6 will apply pressure to one end of the reinforcing bar, and the reinforcing bar will bend under the action of external force.

[0051] During the bending of the steel bar, the rotation of the rotating table 10 will drive the second ring gear 18 to rotate forward through the first ring gear 13. Due to the presence of the pawl 19 and the ratchet 20, the forward rotation of the second ring gear 18 will only drive the driven gear 21 to rotate and will not drive the reciprocating screw 15 to rotate.

[0052] Since the reciprocating screw 15 does not rotate, the column 22 will not move vertically inside the pipe fitting 11. At this time, the steel brush 25 inside the pipe fitting 11 will abut against the surface of the column 22 under the elastic force of the support spring 24.

[0053] During the forward rotation of the second ring gear 18, which drives the driven gear 21 to rotate, the driven gear 21 will drive the pipe 11 to rotate, and the steel brush 25 inside the pipe 11 will also rotate accordingly, so that the steel brush 25 will perform scanning motion on the surface of the column 22. Since the surface of the column 22 is vertically provided with grooves 23, during the rotation, the grooves 23 will clean the impurities attached to the bristles of the steel brush 25.

[0054] After the steel bar is bent, the hydraulic cylinder 3 drives the rotating table 10 to rotate in the opposite direction to reset. During this process, the rotating table 10 drives the second ring gear 18 to reverse through the first ring gear 13. During the reverse rotation of the second ring gear 18, the pawl 19 and the ratchet 20 are considered to be fixedly connected. At this time, the second ring gear 18 will drive the reciprocating screw 15 to rotate, so that the nut seat 17 on the reciprocating screw 15 will perform a reciprocating motion. The nut seat 17 drives the column 22 to perform a linear reciprocating motion in the vertical direction through the ring 16.

[0055] Within one movement cycle of column 22, it simultaneously exhibits the following two working states:

[0056] In the first working state: the column 22 will drive the bottom rotating table 28 to perform a linear reciprocating motion in the vertical direction. Due to the sliding fit between the guide column 27 and the guide groove 29 on the surface of the rotating table 28, and the guide column 27 being fixed under the action of the fastener 26, the guiding effect of the guide column 27 and the guide groove 29 during the vertical reciprocating motion of the rotating table 28 will force the rotating table 28 to deflect at a certain angle. After the rotating table 28 deflects, it will drive the central pin 12 to deflect through the column 22. After the central pin 12 deflects, its contact part with the steel bar will change. After the central pin 12 deflects, the contact part will re-contact the steel bar after a period of time, so that the contact part on the central pin 12 has a cooling time, thereby preventing the contact part of the central pin 12 from being in a high temperature state during continuous processing, reducing the deformation and damage of the central pin 12 due to the decrease in strength at high temperature, and extending the service life of the central pin 12.

[0057] The second working state: The column 22 will drive the central pin 12 at the top to make a linear reciprocating motion in the vertical direction, so that the central pin 12 completes one in-and-out movement inside the pipe 11. When the central pin 12 enters the pipe 11, the second ring gear 18 in the reverse state will also drive the pipe 11 to rotate through the driven gear 21. The pipe 11 drives the steel brush 25 inside to rotate. Under the elastic force of the support spring 24, the steel brush 25 will abut against the surface of the central pin 12 to clean the surface of the central pin 12. In addition, after the central pin 12 moves down into the pipe 11, it ensures that the central pin 12 will separate from the processed steel bar, so as to prevent the bending steel bar from being difficult to separate from the central pin 12 due to possible friction between the central pin 12 and the processed steel bar.

[0058] Compared with the prior art, the metal bending and forming device provided by the present invention changes the contact position between the central pin and the reinforcing bar by deflecting the central pin, thereby preventing the central pin from deforming due to excessive local temperature, so as to reduce the damage rate of the central pin and extend its service life.

[0059] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A metal bending and forming device for machine tool processing, comprising a base (1), wherein a plurality of supports (101) are fixedly connected to the middle of the upper surface of the base (1), and a rotating seat (9) is fixedly connected to the top of the supports (101), characterized in that, A circular rotating platform (10) is rotatably mounted in the middle of the rotating seat (9). A track (4) is fixedly connected to one side of the rotating platform (10). A sliding seat (5) is slidably fitted on the track (4). A force-applying wheel (6) is rotatably mounted on the top of the sliding seat (5). A connecting beam (7) is fixedly connected to one side of the rotating seat (9). A pressure block (8) is fixedly connected to the end of the connecting beam (7). A pipe fitting (11) is rotatably mounted in the middle of the rotating platform (10). A central pin (12) is slidably fitted inside the pipe fitting (11). A deflection structure is provided at the bottom of the central pin (12) to drive the central pin (12) to deflect after the metal is bent. The deflection structure includes a column (22), the top of which is fixed to the bottom of a central pin (12), and a cylindrical rotating platform (28) fixed to the bottom of the column (22). The rotating platform (28) has a serrated guide groove (29) on its surface. A fastener (26) is fixed to the upper surface of the base (1), and a guide post (27) is horizontally fixed to the top of the fastener (26). The end of the guide post (27) slides within the guide groove (29). The bottom surface of the rotating seat (9) is provided with a linear moving structure to drive the column (22) to perform reciprocating linear motion in the vertical direction. The linear moving structure includes a connecting plate (14), which is fixed to the bottom surface of the rotating seat (9). A reciprocating screw (15) is rotatably mounted on the connecting plate (14), and a ring (16) is rotatably mounted on the column (22). A nut seat (17) is mounted on the side wall of the ring (16), and the reciprocating screw (15) is threadedly engaged with the nut seat (17).

2. The metal bending and forming apparatus for machine tool processing according to claim 1, characterized in that, A cylinder seat (2) is fixedly connected to one side of the upper surface of the base (1), and a cylinder (3) is rotatably installed on the top of the cylinder seat (2). The output end of the cylinder (3) is rotatably connected to the bottom of the track (4).

3. The metal bending and forming apparatus for machine tool processing according to claim 1, characterized in that, The bottom surface of the rotating platform (10) is fixedly connected to a first ring gear (13), the top of the reciprocating screw (15) is rotatably mounted with a support plate (30), the upper surface of the support plate (30) is rotatably mounted with a second ring gear (18), the first ring gear (13) meshes with the second ring gear (18), the inner wall of the second ring gear (18) is hinged with a plurality of pawls (19), the top of the reciprocating screw (15) is fixedly connected with a ratchet (20), and the pawls (19) cooperate with the ratchet (20).

4. The metal bending and forming apparatus for machine tool processing according to claim 3, characterized in that, The connecting plate (14) has multiple blind holes (31) inside, and bullet-shaped balls (33) are slidably fitted inside the blind holes (31). A compression spring (32) is provided inside the blind holes (31) to apply elastic force to the balls (33). A limiting groove (34) is provided on the outer wall of the reciprocating screw (15), and the balls (33) cooperate with the limiting groove (34).

5. The metal bending and forming apparatus for machine tool processing according to claim 4, characterized in that, Multiple support springs (24) are fixed to the inner wall of the pipe fitting (11), and steel brushes (25) are fixed to the ends of the support springs (24) for cleaning the central pin (12).

6. The metal bending and forming apparatus for machine tool processing according to claim 5, characterized in that, A driven gear (21) is fixedly connected to the outer wall of the pipe fitting (11), and the driven gear (21) is matched with the second ring gear (18).

7. The metal bending and forming apparatus for machine tool processing according to claim 6, characterized in that, The column (22) has multiple vertical grooves (23) on its outer wall for cleaning the steel brush (25).

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