Shearing and straightening all-in-one machine and shearing and straightening method for cold-bent profile

Abstract

The invention discloses a shearing and straightening all-in-one machine and a shearing and straightening method for a cold-bent profile, relates to the field of profile shearing, and aims to solve the problems that in the prior art, shearing and straightening of the profile are carried out step by step, the cost is high, and the precision is low, according to the technical scheme, a side sliding block is arranged on an upper die fixing plate, and a guide face is arranged on the side sliding block; a lower cutter guide plate is arranged on the lower die fixing plate, a rotary lower cutter is hinged to a rotary shaft connected to the lower cutter guide plate, in the downward cutting process of the shearing upper cutter, a side sliding block descends synchronously, the rotary lower cutter is rotated and closed through extrusion of a guide face, and shearing and shape correction of the vertical face of the profile are conducted. On the premise that a new power source is not introduced, shearing of the cold-bending profile can be achieved, and meanwhile shape correction of the profile in the shearing process is achieved so that the profile can be kept in the optimal shape.

Description

Technical Field

[0001] The invention relates to the technical field of profile shearing, and in particular to a shearing and straightening integrated machine and a shearing and straightening method for cold-bent profiles. Background Art

[0002] In the processing of C-shaped profiles, in addition to processing the C-shaped structure, holes need to be cut on the profile according to user needs, and these holes are often used for profile installation and other work. However, in the existing hole processing, during the shearing process, the profile will form an outward expansion when the top surface is stressed, resulting in deformation of the profile, which is not conducive to the alignment of the holes in the later use of the profile. In the prior art, the profile is reshaped after the shearing is completed to overcome this problem, but this method not only requires the introduction of a new power source, but also due to the change of the workstation, it is necessary to first release the clamping of the workpiece at the shearing station, then transfer it to the correction station, and then clamp it at the correction station. The operation is cumbersome and it is also prone to greater errors before and after the change of the workstation. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a cold-bent profile cutting and straightening integrated machine and a cutting and straightening method, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention discloses a shearing and straightening machine for cold-bent profiles, the technical scheme adopted is that it includes a power component and a shearing die core, the power component is connected to the shearing die core, the shearing die core includes a lower die plate and an upper die plate, the lower die plate and the upper die plate are connected by a sliding guide column assembly, the upper die plate is connected with a shearing upper knife and a pressing block, the lower die plate is connected with a pressing table, the shearing upper knife and the pressing block correspond to the position of the pressing table, the lower die plate is also connected with a guide block and a lower knife guide plate, the upper die plate is connected with a side slider, the side slider is in sliding contact with the guide block, and a guide surface is provided on the side slider; a rotating lower knife is hinged on the lower knife guide plate, the rotating lower knife corresponds to the position of the pressing table, the rotating lower knife is in sliding contact with the guide surface, and the position of the rotating lower knife can be changed by the guidance of the guide surface, thereby shearing and straightening the profile vertical surface; the rotating lower knife is connected with a resetting device for resetting the rotating lower knife after the shearing operation is completed.

[0005] As a preferred technical solution of the present invention, the lower template is connected with a pillar B, and the pillar B is connected with a second unloading screw; the upper template is connected with a pillar C, and a sliding hole is provided on the upper template, and the sliding hole and the second unloading screw are in sliding contact, the lower template is connected with a nitrogen spring, and the pillar C is connected with the telescopic end of the nitrogen spring. The screw rod of the second unloading screw guides the lifting trajectory of the upper template, and the countersunk head at the end of the second unloading screw can prevent the upper template from detaching.

[0006] As a preferred technical solution of the present invention, the lower mold plate is connected to a lower mold fixing plate, and the guide block, the pressing table and the lower knife guide plate are all connected to the lower mold fixing plate; the upper mold plate is connected to an upper mold fixing plate, and the side sliding block and the shear upper knife are all connected to the upper mold fixing plate.

[0007] As a preferred technical solution of the present invention, the rotary lower knife has two groups, namely, the discharge side lower knife assembly and the feed side lower knife assembly, which are symmetrically arranged on the front and rear sides of the shear upper knife; the discharge side lower knife assembly and the feed side lower knife assembly each include two groups of lower knives, which are symmetrically arranged on both sides of the press table. The vertical surfaces on both sides of the profile can be sheared and corrected at the same time.

[0008] As a preferred technical solution of the present invention, a hinge hole is provided on the rotating lower knife, a rotating shaft is connected to the lower knife guide plate, and the rotating shaft is passed through the hinge hole.

[0009] As a preferred technical solution of the present invention, a waist-shaped hole is formed on the shearing upper blade, and the rotating shaft passes through the waist-shaped hole, so as to prevent interference between the rotating shaft and the shearing upper blade.

[0010] As a preferred technical solution of the present invention, the upper shaft of the rotating lower knife is connected to a guide wheel, and the guide wheel is in sliding contact with the guide surface. The guide wheel can reduce the friction between the rotating lower knife and the side slider, slow down the wear, and extend the service life.

[0011] As a preferred technical solution of the present invention, the guide surface of the side sliding block is an inclined surface or a curved surface that is sunken from top to bottom.

[0012] As a preferred technical solution of the present invention, the reset device is a tension spring, and the two ends of the tension spring are respectively connected to the guide block and the rotating lower knife. After a processing action is completed, the rotating lower knife is reset by pulling the tension spring.

[0013] The present invention also discloses a shearing and straightening method based on the above-mentioned shearing and straightening integrated machine, and the technical solution adopted is that the method comprises the following steps: Step 1: The profile enters the shearing and straightening machine from the feed port, slides along the top surface of the press table, and is sleeved on the press table; Step 2, after feeding to a set length, pausing feeding, starting the power component, driving the upper template to press downward, and the pressing block presses the profile tightly on the pressing table; Step 3, the power component continues to move, the shearing upper knife shears the top surface of the profile, and at the same time the guide surface of the side slider squeezes the rotating lower knife, thereby driving the rotating lower knife to rotate and shear and correct the profile; Step 4, after the shearing and shaping is completed, the power component is reset, the rotating lower knife is reset under the action of the reset device, and the pressing block rises, completing a shearing and shaping action of the head and tail of the profile; Step 5, continue feeding until the workpiece is processed.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: during the shearing process, the present invention can realize the shearing of cold-bent profiles without introducing a new power source by automatically closing the rotating lower knife through the guiding surface of the guide block while the pressure block presses the profile. At the same time, the profile can be corrected during the shearing process to maintain it in the best shape. The entire shearing and correction process is carried out in one processing position, eliminating the need for station adjustment and ensuring processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the front view structure of the shearing mold core of the present invention; Figure 3 This is a schematic diagram of the side view structure of the shearing mold core of the present invention; Figure 4 This is a schematic diagram of the top view of the shearing mold core of the present invention; Figure 5 It is a schematic diagram of the connection structure between the lower mold plate and the upper mold plate of the shear mold core of the present invention.

[0016] In the figure: 1. lower template; 2. lower mold fixing plate; 3. guide block; 301. guide groove; 4. pressing table; 5. limit block; 9. rotating lower knife; 901. guide wheel; 10. side slide block; 11. lower knife guide plate; 12. pillar A; 14. upper mold fixing plate; 17. upper mold pad; 18. upper template; 19. shearing upper knife; 22. tension spring; 23. lower knife assembly on the discharge side; 26. pressing block; 27. first unloading screw; 28. compression spring; 29. ​​lower knife assembly on the feed side; 31. pillar B; 33. second unloading screw; 35. pillar C; 37. nitrogen spring; 43. sliding guide column assembly; 44. induction switch bracket; 48. rotating shaft. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0018] like Figures 1 to 5 As shown, the present invention discloses a shearing and straightening machine for cold-bent profiles, and the technical solution adopted is that it includes a frame, the frame is a square frame structure, a cylinder is installed on the top as a power component, the cylinder is connected to the air circuit control system, the air circuit control system is electrically connected to the control device, the telescopic end of the cylinder is connected to the connecting plate, the connecting plate is connected to the upper template 18 of the shearing die core, and the lower template 1 is installed on the top surface of the frame bottom plate. In order to ensure the vertical movement of the upper template 18, a sliding guide column assembly 43 is arranged on the lower template 1, and a sliding guide hole is opened on the upper template 18, and the sliding guide column assembly 43 slides in contact in the sliding guide hole. The lower template 1 is also vertically connected to the pillar B31, and the upper end surface of the pillar B31 is opened with a threaded hole, and the second unloading screw 33 is connected, and the upper template 18 is opened with a sliding hole, and the screw rod of the second unloading screw 33 slides in contact in the sliding hole, and the countersunk head of the second unloading screw 33 limits the maximum rising height of the upper template 18.

[0019] The bottom surface of the upper mold plate 18 is connected to the upper mold pad 17 and then to the upper mold fixing plate 14 . In order to shear the top surface of the profile, a shearing upper knife 19 is installed on the upper mold fixing plate 14 .

[0020] A lower die fixing plate 2 is provided on the lower die plate 1 to provide support when the profile is sheared. A material holding table 4 is installed on the lower die fixing plate 2 to clamp and position the profile when shearing. Figure 3 As shown, a press block 26 is connected to the bottom surface of the upper mold fixing plate 14, and a first unloading screw 27 is connected to the top surface of the press block 26. A hole for the first unloading screw 27 to slide is opened on the upper mold plate 18. In order to reduce the impact force of the collision between the upper mold plate 18 and the press block 26, a compression spring 28 is installed on the first unloading screw 27. There are two groups of press blocks 26, which are arranged before and after the shear upper knife 19.

[0021] like Figure 4 As shown, in order to prevent the shear upper knife 19 from damaging the lower parts by the downward cutting action, a limit block 5 is installed on the lower die fixing plate 2, and the limit block 5 limits the minimum height of the upper die plate 18, thereby protecting the lower parts. In order to reduce the rigid impact of the cylinder extension action on the shear die core, as shown in FIG. Figure 5As shown, a support C35 is installed on the bottom surface of the upper mold plate 18, and a nitrogen spring 37 is installed on the top surface of the lower mold plate 1, and the telescopic end of the nitrogen spring 37 is connected to the lower end surface of the support C35.

[0022] In order to perform synchronous shearing and / or correction on the vertical surface of the profile while shearing the top surface of the profile, a side slider 10 is installed vertically downward on the upper mold fixing plate 14, such as Figure 4 As shown, two groups of guide blocks 3 are symmetrically arranged on the lower die fixing plate 2, each group of guide blocks 3 has two guide blocks 3, arranged front and back, and a guide groove 301 is formed between the two guide blocks 3. The side slider 10 slides in the guide groove 301 and is in sliding contact with the opposite surfaces of the two guide blocks 3. An arc-shaped guide surface is arranged below the side of the side slider 10 close to the press table 4, and the guide surface tends to be sunken from top to bottom. A lower knife guide plate 11 is also arranged on the lower die fixing plate 2. There are two lower knife guide plates 11, which are symmetrically arranged at the feed port and the discharge port of the shearing and straightening machine. A rotating shaft 48 is arranged between the two lower knife guide plates 11. The upper shaft of the rotating shaft 48 is connected to the rotating lower knife 9. A longitudinal waist-shaped groove is provided on the shearing upper knife 19 for the rotating shaft 48 to pass through to avoid interference. The side shaft of the rotating lower knife 9 close to the side slider 10 is connected to the guide wheel 901, and the guide wheel 901 is in sliding contact with the vertical surface and the guide surface of the side slider 10. The rotating lower knife 9 has two groups, namely the feeding side lower knife assembly 29 and the discharging side lower knife assembly 23, which are respectively installed on the two lower knife guide plates 11. The feeding side lower knife assembly 29 and the discharging side lower knife assembly 23 each have two groups of lower knives, which are symmetrically arranged about the press table 4, and have forming blades on the opposite surfaces. In order to enable the rotating lower knife 9 to automatically reset after completing a forming process, a tension spring 22 is also installed between the rotating lower knife 9 and the guide block 3. In order to ensure the front and rear guidance of the feeding side lower knife assembly 29 and the discharging side lower knife assembly 23, a support A12 is also installed between the two lower knife guide plates 11.

[0023] Induction switch brackets 44 are installed on both sides of the lower template 1 for installing induction switches.

[0024] The present invention also discloses a shearing and straightening method based on the above-mentioned cold-bent profile shearing and straightening integrated machine, and the adopted technical solution is to include the following steps: Step 1, the profile enters from the feed port and is placed on the press table 4; Step 2, after reaching the set feeding length, the feeding is stopped, and the control device controls the air circuit control system to ventilate the cylinder (i.e., the actuating component), and the cylinder extends, so that the pressing block 26 presses the profile onto the pressing table 4; Step 3, the cylinder continues to extend, the compression spring 28 forms a buffer between the upper die fixing plate 14 and the pressing block 26, the cylinder continues to extend, the shearing upper knife 19 contacts the profile and starts shearing, and at the same time, the guide surface of the side slider 10 contacts the guide wheel 901 and starts to squeeze the guide wheel 901, so that the rotating lower knife 9 rotates around the rotating shaft 48 and closes, the tension spring 22 is stretched, the cylinder continues to extend, the shearing upper knife 19 cuts a hole on the top surface of the profile, and at the same time, the rotating lower knife 9 shears and corrects the profile to prevent the shearing of the shearing upper knife 19 from causing deformation of the profile; Step 4, after the shearing and shaping is completed, the cylinder retreats, the shearing upper knife 19 leaves the profile, and at the same time, the extrusion force of the guide wheel 901 is reduced, and the tension spring 22 resets the rotating lower knife 9 and leaves the profile. The cylinder continues to retreat, and the pressing block 26 rises to release the pressure on the profile, completing a shearing and shaping operation cycle of the head and tail of the profile; Step 5, continue feeding until the processing is completed.

[0025] The mechanical connection involved in the present invention is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of tests, which is common knowledge.

[0026] Components not described in detail herein are prior art.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shearing and straightening machine for cold-bent profiles, comprising a power component and a shearing die core, wherein the power component is connected to the shearing die core, the shearing die core comprises a lower die plate (1) and an upper die plate (18), the lower die plate (1) and the upper die plate (18) are connected via a sliding guide column assembly (43), the upper die plate (18) is connected with a shearing upper knife (19) and a pressing block (26), the lower die plate (1) is connected with a pressing table (4), the shearing upper knife (19) and the pressing block (26) are both located correspondingly to the pressing table (4), and the characteristics are as follows: The lower mold plate (1) is also connected to a guide block (3) and a lower knife guide plate (11); the upper mold plate (18) is connected to a side slider (10); the side slider (10) and the guide block (3) are in sliding contact, and the side slider (10) has a guide surface; a rotating lower knife (9) is hinged on the lower knife guide plate (11); the rotating lower knife (9) and the pressing table (4) are in corresponding positions; the rotating lower knife (9) and the guide surface are in sliding contact; the rotating lower knife (9) is connected to a reset device.

2. The cold-bent profile shearing and straightening machine according to claim 1, characterized in that: The lower mold plate (1) is connected to a support B (31), and a second unloading screw (33) is connected to the support B (31); the upper mold plate (18) is connected to a support C (35), and a sliding hole is provided on the upper mold plate (18), and the sliding hole and the second unloading screw (33) are in sliding contact; the lower mold plate (1) is connected to a nitrogen spring (37), and the support C (35) is connected to the telescopic end of the nitrogen spring (37).

3. The cold-bent profile shearing and straightening machine according to claim 1 or 2, characterized in that: The lower mold plate (1) is connected to a lower mold fixing plate (2), and the guide block (3), the material pressing table (4) and the lower knife guide plate (11) are all connected to the lower mold fixing plate (2); the upper mold plate (18) is connected to an upper mold fixing plate (14), and the side slider (10) and the shear upper knife (19) are all connected to the upper mold fixing plate (14).

4. The cold-bent profile shearing and straightening machine according to claim 3, characterized in that: The rotating lower knife (9) comprises two groups, namely a discharge side lower knife assembly (23) and a feed side lower knife assembly (29), which are symmetrically arranged on the front and rear sides of the shearing upper knife (19); the discharge side lower knife assembly (23) and the feed side lower knife assembly (29) each comprise two groups of lower knives, which are symmetrically arranged on both sides of the press table (4).

5. The cold-bent profile shearing and straightening machine according to claim 4, characterized in that: The rotating lower knife (9) is provided with a hinge hole, and the lower knife guide plate (11) is connected with a rotating shaft (48), and the rotating shaft (48) is inserted into the hinge hole.

6. The cold-bent profile shearing and straightening machine according to claim 5, characterized in that: The shearing upper knife (19) is provided with a waist-shaped hole, and the rotating shaft (48) passes through the waist-shaped hole.

7. The cold-bent profile shearing and straightening machine according to claim 5, characterized in that: The upper shaft of the rotating lower knife (9) is connected to a guide wheel (901), and the guide wheel (901) is in sliding contact with the guide surface.

8. The cold-bent profile shearing and straightening machine according to claim 7, characterized in that: The guide surface of the side sliding block (10) is an inclined surface or a curved surface that is recessed from top to bottom.

9. The cold-bent profile shearing and straightening machine according to claim 1, characterized in that: The resetting device is a tension spring (22), and two ends of the tension spring (22) are respectively connected to the guide block (3) and the rotating lower knife (9).

10. A shearing and straightening method based on the shearing and straightening machine for cold-bent profiles according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1, the profile enters the shearing and straightening machine from the feed inlet, slides along the top surface of the press table (4), and is sleeved on the press table (4); Step 2, after the material is fed to a set length, the feeding is stopped, the power component is started, the upper template (18) is driven downward, and the pressing block (26) presses the profile onto the pressing table (4); Step 3, the power component continues to move, the shearing upper knife (19) shears the top surface of the profile, and at the same time, the guide surface of the side slider (10) squeezes the rotating lower knife (9), thereby driving the rotating lower knife (9) to rotate and shear and correct the vertical surface of the profile; Step 4, after the shearing and shaping is completed, the power component is reset, the rotating lower knife (9) is reset under the action of the reset device, and the pressing block (26) rises, completing a shearing and shaping action of the head and tail of the profile; Step 5, continue feeding until the workpiece is processed.

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