CN112275863B - Profile stretch bending equipment - Google Patents

Abstract

The invention provides a section bar stretch bending device, which comprises a working platform; the left swing arm assembly and the right swing arm assembly are used for clamping and stretching two ends of the section bar; swing arm cylinder assembly; the left swing arm assembly and the right swing arm assembly are respectively positioned at two sides of the working platform, and the swing arm oil cylinder assembly is connected with the left swing arm assembly and the right swing arm assembly; the working platform comprises a platform base, a pressing mechanism for longitudinally positioning the section bar, a horizontal positioning mechanism for horizontally positioning the section bar, and a tangential point positioning mechanism for positioning tangential points of the section bar during stretch bending; the left swing arm assembly and the right swing arm assembly both comprise a swing arm seat body and a material pulling arm mechanism arranged on the swing arm seat body; the swing arm oil cylinder assembly is connected with the swing arm seat body to drive the swing arm seat body to swing. The profile stretch bending equipment can realize high-precision and high-efficiency stretch bending of the profile, and has the characteristics of simple and convenient operation and strong practicability, thereby ensuring the stretch bending quality of the profile.

Description

A profile bending equipment

Technical Field

The invention relates to the technical field of profile bending processing, and more specifically to a profile bending device.

Background technique

At present, metal profiles with a certain curvature are widely used in production and life. For example, in building decoration, metal profiles with a specific curvature are required as fixtures. For another example, they are also widely used in the manufacture of aircraft and automobiles. In order to obtain a metal profile with a predetermined curvature, the metal profile needs to be stretched and bent.

Most of the domestic profile bending processes include three stages: pre-stretching, bending and supplementary stretching. During this process, the profile must be kept as close to the surface of the bending die as possible to ensure the accuracy of the forming. Finally, the external force is removed and the material is taken out. Among them, the working platform, as the main operating platform of the bending machine, plays a very important role in the positioning and pressing of the profile. Since the profile includes plastic deformation and elastic deformation in the bending process, the profile will show a certain rebound property after the bending is completed. Therefore, when the profile changes with the bending angle, it is necessary to position the profile through the longitudinal positioning mechanism and the horizontal positioning mechanism of the profile to ensure the verticality of the longitudinal and horizontal directions during the bending process of the profile to prevent affecting the bending quality of the profile. At the same time, during the bending process of the profile, it is also necessary to prevent the tangent point from warping or shifting, especially the tangent point where the large radius turns to the small radius and the tangent point where the arc and the straight line segment transition position need to be positioned.

The existing bending equipment has a relatively simple function. Due to the simple structural design of the working platform and the simple layout of the fixtures on the working platform, the existing bending machines are limited in bending profiles such as steel and aluminum profiles. In addition, the existing profile positioning mechanism not only makes the positioning platform structure of the profile complex, but also makes it difficult to achieve a good positioning effect, which greatly affects the bending quality of the profile.

In addition, the drawing arm of the bending equipment is used to clamp and stretch the profile. Before bending the profile, the position of the drawing arms on both sides needs to be adjusted to achieve alignment with the profile. In the current profile bending process, the position between the profile and the drawing arm is mostly adjusted manually, which not only increases labor and wastes manpower, but also reduces work efficiency.

Summary of the invention

The purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art and to provide a profile bending device which can achieve high-precision and high-efficiency bending of profiles and has the characteristics of simple and convenient operation and strong practicality, thereby ensuring the bending quality of the profiles.

In order to achieve the above object, the present invention is implemented by the following technical solution: a profile bending device, characterized in that it includes:

Work platform;

A left swing arm assembly and a right swing arm assembly for clamping and stretching both ends of the profile;

and a swing arm cylinder assembly for driving the left swing arm assembly and the right swing arm assembly to swing;

The left swing arm assembly and the right swing arm assembly are respectively located on both sides of the working platform, and the swing arm cylinder assembly is connected to the left swing arm assembly and the right swing arm assembly;

The working platform includes a platform seat, a base, a downward pressing mechanism for longitudinally positioning the profile, a horizontal positioning mechanism for horizontally positioning the profile, and a tangent point positioning mechanism for positioning the tangent point when the profile is bent; the downward pressing mechanism, the horizontal positioning mechanism and the tangent point positioning mechanism are all arranged on the base, and the base is detachably connected to the platform seat;

The left swing arm assembly and the right swing arm assembly both include a swing arm base body and a material pulling arm mechanism arranged on the swing arm base body; the swing arm cylinder assembly is connected to the swing arm base body to drive the swing arm base body to swing; the material pulling arm mechanism includes a chuck, an arm body, a core-penetrating and core-pulling mechanism, a core rod, an outer frame, a stretching cylinder for driving the telescopic movement of the arm body, a stretching cylinder mounting frame and a rotating device for driving the arm body to rotate; the core-penetrating and core-pulling mechanism is arranged in the arm body; the arm body is penetrated by the stretching cylinder mounting frame and connected to the chuck, the stretching cylinder is arranged on the stretching cylinder mounting frame and connected to the arm body, so as to realize a sliding connection between the arm body and the stretching cylinder mounting frame; the stretching cylinder is rotationally connected to the outer frame through a rotating device, so as to drive the arm body to rotate, so that the arm body is aligned with the profile.

In the above scheme, the profile can be positioned on the working platform by the downward pressing mechanism and the horizontal positioning mechanism, and then the two ends of the profile are clamped by the left swing arm assembly and the right swing arm assembly and the profile is pre-stretched by the stretching cylinder, and finally the left swing arm assembly and the right swing arm assembly are driven by the swing arm cylinder assembly to swing, so as to realize the automated bending of the profile. The material bending equipment of the present invention can realize high-precision and high-efficiency bending of profiles, and has the characteristics of simple and convenient operation and strong practicality, thereby ensuring the bending quality of the profile. The drawing arm mechanism of the present invention can realize the rotation of the arm body by the rotating device, so that the arm body can be aligned with the profile, and the profile can be clamped by the clamp connected to the arm body. Therefore, the drawing arm mechanism can conveniently adjust the angle position of the arm body according to the positioning position of the profile, thereby improving the efficiency of the bending of the profile.

The pressing mechanism comprises a mold core, a lower cover plate, an upper cover plate for pressing the profile, and a driving unit for driving the upper cover plate to lift and press down; the mold core is adjustably connected to the base, and the mold core and the base are detachably connected, and the lower cover plate is connected to the mold core; the driving unit is arranged on the mold core, one side of the upper cover plate is hinged to the mold core, and the other side is hinged to the driving end of the driving unit; when working, the driving unit drives the upper cover plate to press down to press and position the profile placed on the lower cover plate, or the driving unit drives the upper cover plate to lift to unload or discharge the profile;

The horizontal positioning mechanism includes a front buckle device and a rear support device for rear support of the downward pressing mechanism; the rear support device is arranged on the base; the front buckle device includes a front buckle driving component and a front buckle positioning component, the front buckle driving component is arranged on the base and connected to the front buckle positioning component, so that the front buckle driving component drives the front buckle positioning component to move, so as to horizontally position the profile positioned on the downward pressing mechanism, or the front buckle driving component drives the front buckle positioning component to reset;

The intersection point positioning mechanism is installed on the base, and includes a mounting seat installed on the base, an intersection point positioning drive component, a top plate and an adjusting device for adjusting the rotation of the intersection point positioning drive component; the intersection point positioning drive component is rotatably connected to the mounting seat and is connected to the top plate; one end of the adjusting device is hinged to the mounting seat, and the other end is hinged to the intersection point positioning drive component, so as to adjust the distance between the two hinges to adjust the rotation angle of the intersection point positioning drive component on the mounting seat, so that the top plate is opposite to the intersection point of the profile, and the intersection point positioning drive component drives the top plate to perform intersection point positioning on the profile positioned in the downward pressing mechanism.

The present invention uses a downward pressing mechanism to longitudinally press and position the profile, and the front buckle driving component can drive the front buckle positioning component to press the profile fixed on the downward pressing mechanism in a backward pulling manner, thereby realizing the horizontal positioning of the profile. This positioning method of front buckling the profile can not only realize the stable positioning of the profile, but also simplify the positioning structure of the profile. In addition, the rear support device can support the downward pressing mechanism to prevent the downward pressing mechanism from tipping over during the bending process of the profile, which can improve the coordination between the horizontal positioning mechanism and the downward pressing mechanism for the positioning of the profile, thereby ensuring the bending quality of the profile. The downward pressing mechanism of the present invention is a modular structure, and its components are all arranged on the mold core, and are adjustably and detachably connected to the base through the mold core, which can facilitate the installation, disassembly or maintenance of the downward pressing mechanism. The tangent point positioning driving component of the present invention can drive the top plate to hold the tangent point of the already positioned profile, so as to realize the positioning of the tangent point where the profile turns from a large radius to a small radius and the tangent point where the arc and the straight line segment transition position during the bending process, and prevent the tangent point from warping or shifting during the bending process of the profile, thereby ensuring the bending quality of the profile. In addition, the adjustment device adjusts the rotation angle of the tangent point positioning driving component on the mounting seat accordingly, so that the top plate can be adjusted according to the change of the position of the tangent point of the profile, thereby further ensuring the bending quality of the profile.

The driving unit comprises a downward pressing driving device and a downward pressing driving device mounting seat, wherein the downward pressing driving device mounting seat is arranged on the mold core; the downward pressing driving device is hinged to the downward pressing driving device mounting seat;

It also includes a joint and an upper cover plate mounting seat; the joint is connected to the driving end of the downward pressing driving device; the upper cover plate mounting seat is connected to the upper cover plate and is hinged to the joint.

The front buckle positioning component includes a front buckle plate and a slide seat; the driving end of the front buckle driving component passes through the bottom of the mold core and is connected to one side of the slide seat; the front buckle plate is arranged on the other side of the slide seat;

The front buckle driving component also includes a slider and a linear guide rail; the linear guide rail is arranged on the base, and the slider is arranged at the bottom of the slide seat and is slidably connected to the linear guide rail.

The tangent point positioning drive component is provided with a connecting block; the adjusting device includes a transmission member 1, a transmission member 2, an adjusting rod and a nut for locking the adjusting rod; the transmission member 1 is hinged to the connecting block, and the transmission member 2 is hinged to the mounting seat; the adjusting rod is sleeved on the transmission member 1 and the transmission member 2, and the nuts are located on both sides of the adjusting rod, so that the adjusting rod is rotated to drive the transmission member 1 and the transmission member 2 to open and close and lock them through the nut to adjust the distance between the two hinges.

The working platform also includes a punching mechanism for punching the profile positioned on the downward pressing mechanism; the punching mechanism is detachably connected to the base.

The core-penetrating and core-pulling mechanism comprises a core-penetrating and core-pulling oil cylinder, a core rod connecting block and a core rod transition block, all of which are arranged in the arm body; one end of the core rod connecting block is adjustably and detachably connected to the core rod transition block, and the other end is detachably connected to the core rod; the core rod transition block is connected to the core-penetrating and core-pulling oil cylinder, so that the core-penetrating and core-pulling oil cylinder drives the core rod to penetrate into the profile fixed on the chuck or the core rod is pulled out from the profile;

The end surface where the mandrel transition block and the mandrel connecting block are connected is provided with an adjustment groove;

The mandrel connecting block is provided with a fixing part and an adjusting part connected to each other; the fixing part is detachably connected to the mandrel; the adjusting part is detachably connected to the adjusting slot of the mandrel transition block; the adjusting part is provided with a long slot hole, the mandrel connecting block is adjusted and clamped in the adjusting slot through the adjusting part, and the mandrel connecting block is connected to the mandrel transition block through a fastener and the long slot hole;

It also includes a mandrel guide plate for guiding the mandrel to penetrate and withdraw; the mandrel guide plate is arranged inside the chuck;

The core rod guide plate is provided with a through hole for the core rod to pass through, and the through hole is arranged opposite to the core rod.

The core rod connecting block is detachably connected to the core rod, which makes it easy to replace or repair the core rod by the core-penetrating and core-pulling mechanism. In addition, the core-penetrating and core-pulling mechanism can be adjustably and detachably connected to the core rod transition block through the core rod connecting block according to the position of the profile clamping, so as to quickly adjust the position of the core rod insertion, thereby greatly improving practicality.

The rotating device comprises a reset cylinder, a reset cylinder mounting frame, a reset cylinder connecting sleeve and a reset cylinder connecting shaft; the stretching cylinder is connected to the outer frame via the reset cylinder connecting shaft; the reset cylinder is arranged on the stretching cylinder via the reset cylinder mounting frame, the reset cylinder connecting sleeve is arranged on the reset cylinder connecting shaft, and the driving end of the reset cylinder is connected to the reset cylinder connecting sleeve, so that the reset cylinder drives the stretching cylinder to rotate and connect with the outer frame, thereby driving the arm body to rotate;

The working modes of the reset oil cylinder include an active drive working mode and a follow-up working mode, and the working modes of the reset oil cylinder are switched between the active drive working mode and the follow-up working mode.

When the angle position of the arm needs to be adjusted according to the position of the profile, the working mode of the reset cylinder is the active drive working mode. After the chuck clamps the profile, during the profile stretching process, the working mode of the reset cylinder is switched to the follow-up working mode, that is, the reset cylinder itself has no power, the oil inlet and outlet are open, and it can freely expand and contract with the movement of the mechanical part, so that the rotation angle of the arm can also freely swing according to the swing angle of the left swing arm assembly and the right swing arm assembly and the angle of profile stretching, which is conducive to improving the stretching quality of the profile.

The mandrel includes a joint unit and a mandrel connecting rod; the joint unit includes a joint component and a mandrel pull rod, and the joint component is a movable and detachable structure; the joint component, the mandrel pull rod and the mandrel connecting rod are hinged and detachably connected in sequence; or the joint component, the mandrel pull rod and the mandrel connecting rod are connected in sequence.

The joint component, mandrel pull rod and mandrel connecting rod of the present invention are hinged and detachably connected in sequence, or the joint component, mandrel pull rod and mandrel connecting rod are connected in sequence. The mandrel can not only be inserted into the groove of the profile for support to avoid deformation and collapse of the local non-bending part of the profile during bending, but also the mandrel can be easily replaced or repaired when it is partially worn or broken, thereby greatly reducing the production cost of profile bending.

There are more than two joint units;

The joint components, the mandrel pull rod and the mandrel connecting rod are hinged and detachably connected in sequence, which means that each joint component is spliced and detachably connected with the mandrel connecting rod through the mandrel pull rod to form a mandrel body; the joint units are arranged in parallel, and there is a gap between adjacent joint units for inserting the profile partition plate;

Alternatively, the joint component, mandrel pull rod and mandrel connecting rod are connected in sequence, which means that: each joint component is hinged to the mandrel pull rod, the mandrel pull rod and the mandrel connecting rod are connected to form an integrated structure to form a mandrel body; the joint units are arranged in parallel, and there is a gap between adjacent joint units for inserting profile partitions.

During the use of the profile bending equipment, first, the downward pressing mechanism is adjustably installed on the base through the connecting device, and is located above the connection between the front buckle drive component and the slide. After the downward pressing mechanism positions the profile by downward pressing, the front buckle drive component drives the slide to move toward the profile on the base, that is, the profile fixed on the downward pressing mechanism is pressed tightly by the front buckle plate in a backward pulling manner to achieve the horizontal positioning of the profile. Then, the pulling arm mechanism can conveniently adjust the angle position of the arm body according to the positioning position of the profile, clamp the two ends of the profile through the chucks of the left swing arm assembly and the right swing arm assembly, and pre-stretch the profile through the stretching cylinder. Finally, the left swing arm assembly and the right swing arm assembly are driven by the swing arm cylinder assembly to swing, thereby realizing the automatic bending of the profile.

During the bending process of the profile, the rear support block supports the downward pressing mechanism to prevent the downward pressing mechanism from tipping over during the bending process, which can improve the coordination between the horizontal positioning mechanism and the downward pressing mechanism in positioning the profile, thereby ensuring the bending quality of the profile. During the bending process of the profile, the adjustment device can be used to adjust the rotation angle of the tangent point positioning drive component on the mounting seat accordingly, and then the tangent point positioning drive component can be controlled to drive the top plate to hold and position the profile positioned at the downward pressing mechanism at the tangent point, so as to achieve positioning of the tangent point where the profile turns from a large radius to a small radius and the tangent point where the arc and the straight line segment transition from the large radius to the small radius during the bending process, thereby preventing the tangent point from warping or shifting during the bending process of the profile, thereby ensuring the bending quality of the profile. After the profile is bent and formed, the profile can be punched by the punching mechanism, without the need to transfer the formed profile to the punching operation site for re-positioning and punching it by the punching device, thereby improving the processing efficiency of the profile.

The pressing drive device of the present invention is hinged to the pressing drive device mounting seat, the upper cover plate is hinged to the mold core, and the upper cover plate is hinged to the driving end of the pressing drive device, so that the pressing mechanism has three movable joints, which can improve the flexibility and versatility of the pressing mechanism. The pressing mechanism is not limited to holding and positioning profiles with flat end faces, but can be used to position profiles with various end faces in the longitudinal direction to ensure the verticality of the profile bending process, thereby ensuring the bending quality of the profile. In addition, the pressing drive device of the present invention drives the upper cover plate to lift and press down, which can facilitate the feeding and discharging of the profile.

Compared with the prior art, the present invention has the following advantages and beneficial effects: the profile bending equipment of the present invention can achieve high-precision and high-efficiency bending of profiles, and has the characteristics of simple and convenient operation and strong practicality, thereby ensuring the bending quality of profiles.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a profile bending device according to the present invention;

FIG2 is a schematic diagram of a work platform base of the present invention;

FIG3 is a schematic diagram of a downward pressing mechanism in a working platform of the present invention;

FIG4 is a schematic diagram of a downward pressing mechanism in the working platform of the present invention pressing a profile;

FIG5 is a schematic diagram of the first embodiment of the pressing mechanism of the present invention with the mold core and the lower cover removed;

FIG6 is a second schematic diagram of the pressing mechanism of the present invention removing the mold core and the lower cover plate;

7 is a schematic diagram of a horizontal positioning mechanism and a connecting device in a working platform of the present invention;

FIG8 is a schematic diagram of a horizontal positioning mechanism of the present invention;

9 is a schematic diagram of a tangent point positioning mechanism in a working platform of the present invention;

10 is a second schematic diagram of the tangent point positioning mechanism of the working platform of the present invention;

FIG11 is a schematic diagram of a punching mechanism in a working platform of the present invention;

12 is a second schematic diagram of the punching mechanism in the working platform of the present invention;

13 is an internal schematic diagram of the punching mechanism in the working platform of the present invention;

14 is a schematic diagram of the material pulling arm mechanism of the present invention;

15 is a schematic diagram of the core-threading and core-pulling mechanism of the present invention;

FIG16 is a schematic diagram of a mandrel transition block of the present invention;

17 is a schematic diagram of the connection between the mandrel connecting block and the mandrel of the present invention;

18 is a schematic diagram of the installation of the mandrel guide plate of the present invention;

FIG19 is a schematic diagram of the chuck of the present invention;

FIG20 is a schematic diagram of the mandrel in the first embodiment;

FIG21 is a schematic top view of the mandrel in the first embodiment;

FIG22 is a schematic diagram of the bending of the mandrel in the first embodiment;

FIG23 is a schematic cross-sectional view of the profile in the first embodiment of the present invention;

FIG24 is a side view of the mandrel in the second embodiment;

FIG25 is a schematic diagram of a mandrel in Embodiment 3;

Among them, 1 is the base, 1.1 is the seat plate, 1.2 is the end plate, 1.3 is the load-bearing plate, 2 is the pressing mechanism, 2.1 is the mold core, 2.2 is the lower cover plate, 2.3 is the positioning space, 2.4 is the upper cover plate, 2.5 is the pressing cylinder, 2.6 is the pressing cylinder mounting seat, 2.7 is the hinge axis 1, 2.8 is the joint, 2.9 is the upper cover plate mounting seat, 2.10 is the hinge axis 2, 2.11 is the lock Tightening nut 1, 2.12 is the upper cover connecting block, 2.13 is the hinge shaft 3, 2.14 is the locking nut 2, 2.15 is the upper cover support, 3 is the profile, 4 is the horizontal positioning mechanism, 4.2 is the front buckle clamping cylinder, 4.3 is the nylon plate 1, 4.4 is the slide seat, 4.5 is the connector, 4.6 is the pin shaft, 4.7 is the card plate, 4.8 is the slider, 4.9 is the linear guide rail, 4.11 is rear support block, 4.12 is a flat key, 5 is a connecting device, 5.1 is a stud, 5.2 is a locking nut 1, 5.3 is a locking nut 2, 6 is a tangent point positioning mechanism, 6.1 is a mounting seat, 6.2 is a tangent point positioning cylinder, 6.3 is a connecting block 1, 6.4 is an adjusting rod, 6.5 is a screw rod 1, 6.6 is a connecting part 1, 6.7 is a screw rod 2, 6.8 is a connecting part 2, 6.9 is a rotating shaft, 6.10 is a bearing, 6.12 is a rotating shaft 1, 6.13 is a rotating shaft 2, 6.14 is a nut, 6.15 is a pressure plate, 6.16 is a nylon plate 2, 7 is a punching mechanism, 7.1 is a punching mounting seat, 7.2 is a punching cylinder, 7.3 is a connecting sleeve, 7.4 is a connecting ring, 7.5 is a punching needle, 7.6 is a mounting shaft, 7.7 is a self-lubricating copper sleeve, 7.8 is a guide key, 7.9 is a pressure cover , 7.10 is the guide sleeve, 7.11 is the front cover plate, 7.12 is the mounting bracket, 7.13 is the connecting block 2, 7.14 is the bolt 1, 7.15 is the bolt 2, 7.16 is the frame, 8 is the swing arm cylinder assembly, 9 is the platform seat, 10 is the swing arm seat body, 11 is the arm body, 12 is the outer frame, 13 is the stretching cylinder, 14 is the stretching cylinder mounting frame, 15 is the sliding guide rail, 16 is the slider, 17 is the reset cylinder, 18 is the reset cylinder mounting frame, 19 is the reset cylinder connecting sleeve, 20 is the reset cylinder connecting shaft, 21 is the core-through and core-pulling mechanism, 21.1 is the core-through and core-pulling cylinder, 21.2 is the core rod connecting block, 21.2.1 is the fixing part, 21.2.2 is the adjusting part, 21.2.3 is the long slot hole, 21.2.4 is the protruding position, 21.3 is the core rod transition block, 21.3.1 21.4 is the connecting plate for the core-pulling cylinder, 21.6 is the core rod guide plate, 21.6.1 is the through hole, 22 is the core rod, 22.1 is the core rod connecting rod, 22.2 is the core rod pull rod 1, 22.3 is the gap, 22.4 is the pin, 22.5 is the core rod pull rod 2, 22.6 is the joint head, 22.6.1 is the connecting part 1, 22.6.2 is the head, 22.7 is the joint, 22.7.1 is the second connecting part, 22.7.2 is the hinged part, 22.8 is the joint part, 22.9 is the core rod pull rod, 23 is the chuck, 23.1 is the rear frame, 23.2 is the sandwich sleeve, 23.3 is the side sandwich, 23.4 is the sandwich one, 23.5 is the rotating mechanism, 23.6 is the front cover plate, 23.7 is the side clamping cylinder, 23.8 is the auxiliary clamping cylinder, and 23.9 is the tooth plate.

Detailed ways

The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Embodiment 1

As shown in FIGS. 1 to 23 , the profile bending equipment of the present invention comprises:

Work platform;

A left swing arm assembly and a right swing arm assembly for clamping and stretching both ends of the profile;

and a swing arm cylinder assembly 9 for driving the left swing arm assembly and the right swing arm assembly to swing;

Among them, the left swing arm assembly and the right swing arm assembly are respectively located on both sides of the working platform, and the swing arm cylinder assembly 9 is connected to the left swing arm assembly and the right swing arm assembly.

The working platform includes a platform seat 8, a base 1, a downward pressing mechanism 2 for longitudinally positioning the profile 3, a horizontal positioning mechanism 4 for horizontally positioning the profile 3, and a tangent point positioning mechanism 6 for positioning the tangent point when the profile 3 is stretched and bent. The downward pressing mechanism 2 includes a mold core 2.1, a lower cover plate 2.2, an upper cover plate 2.4 for pressing the profile 3, and a driving unit for driving the upper cover plate 2.4 to lift and press down, wherein the driving unit is provided in two, including a downward pressing cylinder 2.5, a hinge shaft 2.7, and a downward pressing cylinder mounting seat 2.6, the downward pressing cylinder mounting seat 2.6 is provided on the mold core 2.1, the lower cover plate 2.2 is connected to the mold core 2.1, and the downward pressing cylinder 2.5 is hinged to the downward pressing cylinder mounting seat 2.6 through a hinge shaft 2.7. The space between the upper cover plate 2.4 and the lower cover plate 2.2 of the present invention serves as a positioning space 2.3 for the profile 3.

The present invention further comprises a joint 2.8, a hinge shaft 2.10, a locking nut 1 2.11 and an upper cover plate mounting seat 2.9, wherein the joint 2.8 is detachably connected to the driving end of the downward pressure cylinder 2.5 through the locking nut 1 2.11, the upper cover plate mounting seat 2.9 is connected to the upper cover plate 2.4, and is hinged to the joint 2.8 through the hinge shaft 2.10. The joint 2.8 of this embodiment is a Y-shaped joint.

The upper cover plate 2.4 of the present invention is hinged to the mold core 2.1 on one side, which means that it also includes an upper cover plate connecting block 2.12, a hinge shaft three 2.13, a locking nut two 2.14 and an upper cover plate support 2.15, wherein the upper cover plate support 2.15 is arranged on the mold core 2.1, and the two driving units are respectively located on both sides of the upper cover plate support 2.15, one end of the upper cover plate connecting block 2.12 is hinged to the upper cover plate support 2.15 through the hinge shaft three 2.13, and the other end is detachably connected to the upper cover plate 2.4 through the locking nut two 2.14, and the upper cover plate connecting block 2.12 and the upper cover plate support 2.15 serve as hinged connecting parts between the mold core 2.1 and the upper cover plate 2.4.

The mold core 2.1 of the present invention is adjustably connected to the base 1, which means that it also includes a connecting device 5 arranged on the base 1, and the connecting device 5 includes a stud 5.1, a locking nut 1 5.2 and a locking nut 2 5.3, wherein the stud 5.1 is adjustably connected to the mold core 2.1 and fixed by the locking nut 1 5.2, and the stud 5.1 is fixed to the base 1 by the locking nut 2 5.3.

The horizontal positioning mechanism of the present invention includes a front buckle device and a rear support device for rear support of the downward pressing mechanism 2, wherein the rear support device is arranged on the base 1, and the front buckle device includes a front buckle clamping cylinder 4.2 and a front buckle positioning component, and the front buckle clamping cylinder 4.2 is arranged on the base 1 and connected to the front buckle positioning component, so that the front buckle clamping cylinder 4.2 drives the front buckle positioning component to move, so as to horizontally position the profile 3 positioned on the downward pressing mechanism 2, or the front buckle clamping cylinder 4.2 drives the front buckle positioning component to reset.

Specifically, the front buckle positioning component includes a nylon plate 4.3, a slide 4.4, a connector 4.5, a pin 4.6, a clamping plate 4.7, a slider 4.8 and a linear guide 4.9, wherein the front buckle pressing oil cylinder 4.2 passes through the bottom of the mold core 2.1 and is connected to one side of the slide 4.4 through the connector 4.5, the nylon plate 4.3 is arranged on the other side of the slide 4.4, and the connection between the slide 4.4 and the front buckle pressing oil cylinder 4.2 and the nylon plate 4.3 serves as a positioning station for the profile 3. The slide 4.4 of this embodiment is connected to the connector 4.5 through the pin 4.6, and the clamping plate 4.7 is arranged on the connector 4.5 and is engaged with the pin 4.6 to prevent the pin 4.6 from rotating. The linear guide 4.9 of the present invention is arranged on the base 1, and the slider 4.8 is arranged at the bottom of the slide seat 4.4 and is slidably connected to the linear guide 4.9, so that under the drive of the front buckle clamping cylinder 4.2, the slide seat 4.4 drives the nylon plate 1 4.3 to move on the base 1.

The rear support device of the present invention comprises a rear support block 4.11 and a flat key 4.12, wherein the rear support block 4.11 is connected to the base 1 through the flat key 4.12 and is arranged opposite to the connecting device 5. The base 1 of the present invention comprises a seat plate 1.1, an end plate 1.2 and a plurality of bearing plates 1.3, wherein the seat plate 1.1 is connected to the end plate 1.2 through the bearing plates 1.3, and the plurality of bearing plates 1.3 are arranged between the seat plate 1.1 and the end plate 1.2. The structural design of the base 1 can ensure the structural strength through the bearing plates 1.3 and can also achieve the effect of reducing the weight.

The cutting point positioning mechanism of the present invention includes a mounting seat 6.1 installed on the base 1, a cutting point positioning cylinder 6.2, a top plate and an adjusting device for adjusting the rotation of the cutting point positioning cylinder 6.2, wherein the cutting point positioning cylinder 6.2 is rotatably connected to the mounting seat 6.1 and is connected to the top plate, one end of the adjusting device is hinged to the mounting seat 6.1, and the other end is hinged to the cutting point positioning cylinder 6.2, so as to adjust the distance between the two hinges to adjust the rotation angle of the cutting point positioning cylinder 6.2 on the mounting seat 6.1, so that the cutting point of the top plate and the profile 3 is opposite, and the cutting point positioning cylinder 6.2 drives the top plate to perform cutting point positioning on the profile 3 positioned on the downward pressing mechanism 2.

Specifically, the present invention further comprises a rotating shaft 6.9 and a bearing 6.10, the tangent point positioning cylinder 6.2 is connected to the rotating shaft 6.9, and the rotating shaft 6.9 is rotatably connected to the mounting seat 6.1 through the bearing 6.10. The tangent point positioning cylinder 6.2 is provided with a connecting block 1 6.3, and the adjusting device comprises a transmission member 1, a transmission member 2, an adjusting rod 6.4 and a nut 6.14 for locking the adjusting rod 6.4, wherein the transmission member 1 is composed of a screw rod 1 6.5 and a connecting part 1 6.6 connected to each other, the transmission member 2 is composed of a screw rod 2 6.7 and a connecting part 2 6.8 connected to each other, the connecting part 1 6.6 is hinged to the connecting block 1 6.3 through a rotating shaft 1 6.12, the connecting part 2 6.8 is hinged to the mounting seat 6.1 through a rotating shaft 2 6.13, and the adjusting rod 6.4 is threadedly connected to the screw rod 1 6.5 and the screw rod 2 6.7 respectively, and the nut 6.14 is threadedly connected to the screw rod 1 6.5 and the screw rod 2 6.7 respectively, and is located on both sides of the adjusting rod 6.4 to lock the adjusting rod 6.4. The thread of the screw rod 1 6.5 and the thread of the screw rod 2 6.7 are arranged in opposite directions. Therefore, when the adjusting rod 6.4 is rotated, the transmission member 1 and the transmission member 2 can be driven to open and close and locked by the nut 6.14 to adjust the distance between the two hinges. In this way, the transmission member 1 can push or pull back the tangent point positioning cylinder 6.2 through the connecting block 1 6.3, so as to adjust the rotation angle of the tangent point positioning cylinder 6.2 on the mounting seat 6.1.

The top plate of the present invention comprises a pressing plate 6.15 and a nylon plate 2 6.16, wherein the nylon plate 2 6.16 is connected to the tangent point positioning cylinder 6.2 via the pressing plate 6.15. The present invention also comprises a wire encoder for outputting the rotation angle of the tangent point positioning cylinder 6.2 to a controller, wherein the wire encoder is connected to the tangent point positioning cylinder 6.2.

The working platform of the present invention also includes a punching mechanism 7 for punching the profile 3 positioned on the pressing mechanism 2, and the punching mechanism 7 is detachably connected to the base 1. The punching mechanism 7 includes a punching mounting seat 7.1 connected to the base 1, a punching oil cylinder 7.2, a connecting sleeve 7.3, a connecting ring 7.4 connected to the connecting sleeve 7.3, a punching needle 7.5, a mounting shaft 7.6, a self-lubricating copper sleeve 7.7 and a guide key 7.8 for preventing the punching needle 7.5 from rotating. The self-lubricating copper sleeve 7.7 is arranged on the inner wall of the punching mounting seat 7.1 and is detachably connected to the punching mounting seat 7.1, the mounting shaft 7.6 is slidably connected to the self-lubricating copper sleeve 7.7, and the punching oil cylinder 7. 2 is arranged inside the punching mounting seat 7.1 and is detachably connected to the connecting sleeve 7.3, the connecting ring 7.4 is detachably connected to the mounting shaft 7.6, the punching needle 7.5 is penetrated in the mounting shaft 7.6 and connected to the connecting ring 7.4, and the guide key 7.8 is clamped on the mounting shaft 7.6 to prevent the mounting shaft 7.6 from rotating; when working, the punching cylinder 7.2 drives the connecting sleeve 7.3 and the connecting ring 7.4 to move to drive the mounting shaft 7.6 to slide in the self-lubricating copper sleeve 7.7, so as to realize the punching operation of the punching needle 7.5. The present invention also includes a pressure cap 7.9, a guide sleeve 7.10 and a front cover plate 7.11 for pressing the punch needle 7.5 onto the mounting shaft 7.6, wherein the pressure cap 7.9 is arranged at the end of the mounting shaft 7.6, the punch needle 7.5 passes through the pressure cap 7.9, the guide sleeve 7.10 is arranged at the end of the punching mounting seat 7.1, the punch needle 7.5 is penetrated on the guide sleeve 7.10, and the front cover plate 7.11 covers the end of the punching mounting seat 7.1.

The present invention also includes a mounting bracket 7.12, a width adjustment device for adjusting the punching mounting seat 7.1 along its width direction, and a transverse width adjustment device for adjusting the punching mounting seat 7.1 along its length direction, wherein the punching mounting seat 1 is adjustably connected to the mounting bracket 7.12, and the width adjustment device includes a connecting block 2 7.13, a bolt 1 7.14 and a bolt 2 7.15, the connecting block 2 7.13 is connected to the punching mounting seat 7.1, the bolt 2 7.15 passes through the connecting block 2 7.13 and is connected to the mounting bracket 7.12, the bolt 1 7.14 passes through the connecting block 2 7.13 and then abuts against the end face of the mounting bracket 7.12, and the distance between the connecting block 2 7.13 and the mounting bracket 7.12 is adjusted by rotating the bolt 1 7.14 to achieve adjustment of the punching mounting seat 7.1 along its width direction. The transverse width direction adjustment device comprises a frame 7.16 with an adjustment slot and a fastener, the frame 7.16 is connected to the mounting bracket 7.12, and the punching mounting seat 7.1 is adjustably connected to the frame 7.16 through the adjustment slot and the fastener.

The left swing arm assembly and the right swing arm assembly of the present invention both include a swing arm base body 10 and a material pulling arm mechanism disposed on the swing arm base body 10 , and the swing arm cylinder assembly 8 is connected to the swing arm base body 10 to drive the swing arm base body 10 to swing. The pulling arm mechanism includes a chuck 23, an arm body 11, a core-threading and core-pulling mechanism 21, a core rod 22, an outer frame 12, a stretching cylinder 13 for driving the arm body 11 to telescopically move, a stretching cylinder mounting frame 14 and a rotating device for driving the arm body 11 to rotate; wherein, the arm body 11 is inserted into the stretching cylinder mounting frame 14 and connected to the chuck 23, the stretching cylinder 13 is arranged on the top of the stretching cylinder mounting frame 14 and is located above the arm body 11, the driving end of the stretching cylinder 13 is connected to the end of the arm body 11 away from the chuck, so as to drive the arm body 11 to slide on the stretching cylinder mounting frame 14, and the stretching cylinder 13 is rotatably connected to the outer frame 12 through the rotating device, so as to drive the arm body 11 to rotate, so that the arm body 11 is aligned with the profile 3.

The present invention also includes a sliding guide rail 15 and a slider 16, wherein the sliding guide rail 15 is arranged on the side of the arm body 11, and the slider 16 is arranged on the stretching cylinder mounting frame 14. When the stretching cylinder 13 drives the arm body 11, the sliding guide rail 15 and the slider 16 realize the sliding connection of the arm body 11 on the stretching cylinder mounting frame 14.

The rotating device of the present invention includes a reset cylinder 17, a reset cylinder mounting frame 18, a reset cylinder connecting sleeve 19 and a reset cylinder connecting shaft 20, wherein the stretching cylinder 13 is connected to the outer frame 12 through the reset cylinder connecting shaft 20, the reset cylinder 17 is arranged on the stretching cylinder 13 through the reset cylinder mounting frame 18, the reset cylinder connecting sleeve 19 is sleeved on the reset cylinder connecting shaft 20, and the driving end of the reset cylinder 17 is connected to the reset cylinder connecting sleeve 19, so that the reset cylinder 17 drives the stretching cylinder 13 to be rotatably connected to the outer frame 12, so as to drive the arm body 11 to rotate, and the rotating device can drive the arm body 11 connected to the stretching cylinder 13 to rotate.

The working mode of the reset oil cylinder 17 is a switch between an active drive working mode and a follow-up working mode. When the angle position of the arm body 11 needs to be adjusted according to the position of the profile, the working mode of the reset oil cylinder 17 is the active drive working mode. After the clamp of the arm body 11 clamps the profile, during the stretching process of the profile, the working mode of the reset oil cylinder 17 is switched to the follow-up working mode, that is, the reset oil cylinder 17 itself has no power, the oil inlet and outlet are open, and it can freely expand and contract with the movement of the mechanical part, so that the rotation angle of the arm body 11 can also swing freely according to the stretching angle of the profile, which is beneficial to improve the stretching forming quality of the profile 3.

The core-penetrating and core-pulling mechanism 21 of the present invention comprises a core-penetrating and core-pulling cylinder 21.1, a core rod connecting block 21.2, a core rod transition block 21.3 and a core-penetrating and core-pulling cylinder connecting plate 21.4, all of which are arranged in the arm body 11, wherein one end of the core rod connecting block 21.2 is adjustably and detachably connected to the core rod transition block 21.3, and the other end is detachably connected to the core rod 22, and the core rod transition block 21.3 is connected to the core-penetrating and core-pulling cylinder 21.1 through the core-penetrating and core-pulling cylinder connecting plate 21.4, so that the core-penetrating and core-pulling cylinder 21.1 drives the core rod 22 to penetrate into the interior of the profile 3 fixed on the chuck 23 or the core rod 22 is pulled out from the interior of the profile 3.

Specifically, the end surface of the mandrel transition block 21.3 connected to the mandrel connection block 21.2 is provided with an adjustment groove 21.3.1 in the longitudinal direction. The mandrel connection block 21.2 is provided with a fixing portion 21.2.1 and an adjustment portion 21.2.2 connected to each other. The fixing portion 21.2.1 is detachably connected to the mandrel 22. The adjustment portion 21.2.2 is provided with a long slot hole 21.2.3. The mandrel connection block 21.2 is adjusted and clamped in the adjustment groove 21.3.1 through the adjustment portion 21.2.2, and the mandrel connection block 21.2 is connected to the mandrel transition block 21.3 through the fastener and the long slot hole 21.2.3. The fixing portion 21.2.1 is provided with a protruding position 21.2.4 for facilitating the installation and positioning of the mandrel 22.

The present invention further comprises a mandrel guide plate 21.6 for guiding the mandrel 22 to pass through. The mandrel guide plate 21.6 is arranged inside the chuck 23. The mandrel guide plate 21.6 is provided with a through hole 21.6.1 for the mandrel 22 to pass through. The through hole 21.6.1 is arranged opposite to the mandrel 22.

The chuck of the present invention comprises a rear frame 23.1, a core sleeve 23.2, a profiled core, a pressing oil cylinder, a rotating mechanism 23.5 for driving the core sleeve 23.2 to rotate, and a front cover plate 23.6, wherein the core sleeve 23.2 is provided with an installation cavity, the profiled core is arranged on the inner side of the installation cavity, and is detachably connected to the core sleeve 23.2 through the front cover plate 23.6, the pressing oil cylinder is arranged on the core sleeve 23.2 and connected to the profiled core to achieve the compression of the profiled core, the rear frame 23.1 is connected to the arm body of the material pulling arm, and the rotating mechanism 23.5 is arranged on the rear frame 23.1 and connected to the core sleeve 23.2 to achieve the driving of the core sleeve 23.2 to rotate, so that the profile clamped by the profiled core is twisted. The rotating mechanism 23.5 of this embodiment adopts a worm gear structure or a rotary motor.

Specifically, the profiled core includes a side core 23.3 and a core 1 23.4, and the space between the side core 23.3 and the core 1 23.4 is used as a space for clamping the profile. In this embodiment, the side core 23.3 is in a straight plate shape, and the core 1 23.4 is in a concave shape. The inner sides of the side core 23.3 and the core 1 23.4 are detachably connected with a tooth plate 23.9.

The clamping cylinder of the present invention comprises a side clamping cylinder 23.7 and an auxiliary clamping cylinder 23.8. The side clamping cylinder 23.7 is arranged on the side of the sandwich sleeve 23.2 and connected to the side sandwich 23.3. The auxiliary clamping cylinder 23.8 is arranged on the top of the sandwich sleeve 23.2 and connected to the sandwich 1 23.4.

The chuck used for bending the profile of the present invention can realize the detachable connection of the profile sandwich core, which is convenient for replacement and maintenance of the profile sandwich core, and the setting of the clamping oil cylinder can improve the clamping force of the chuck. In addition, the design of the rotating mechanism 23.5 makes the chuck not only have a clamping function, but also the profile does not need to be disassembled and then processed by other equipment. The chuck can be directly used to perform secondary twisting processing on the bent profile, which is highly practical.

The mandrel 22 of the present invention comprises a joint unit 1, a joint unit 2 and a mandrel connecting rod 22.1, wherein the joint unit 1 and the joint unit 2 are respectively spliced and detachably connected through the mandrel connecting rod 22.1 to form a mandrel body.

The joint unit 1 includes a joint component 1 and a mandrel rod 1 22.2, one end of the mandrel rod 1 22.2 is hinged to the joint component 1 through a pin 22.4, and the other end is hinged to the mandrel connecting rod 22.1 through the pin 22.4. The joint unit 2 includes a joint component 2 and a mandrel rod 22.5, one end of the mandrel rod 22.5 is hinged to the joint component 2 through a pin 22.4, and the other end is hinged to the mandrel connecting rod 22.1 through the pin 22.4. Both the joint component 1 and the joint component 2 are movable and detachable structures.

In this embodiment, the joint unit 1 and the joint unit 2 are arranged in parallel, and there is a gap 22.3 between the joint unit 1 and the joint unit 2 for inserting the profile partition.

The joint component 1 and the joint component 2 of this embodiment both include a joint head 22.6 and a plurality of joints 22.7, and the joint head 22.6 and the plurality of joints 22.7 are hinged in sequence through a pin 22.4 to form a detachable structure. Among them, the joint head 22.6 is composed of a connection part 1 22.6.1 and a head 22.6.2, and the head 22.6.2 is a trapezoidal body or a triangular body. Each joint 22.7 is a Y-shaped joint, and is composed of a connection part 2 22.7.1 and a hinged part 22.7.2. The joint 22.7 is hinged to the connection part 1 22.6.1 of the joint head 22.6 through the connection part 2 22.7.1, and adjacent joints 22.7 are hinged to each other front and back through the hinged part 22.7.2 and the connection part 2 22.7.1 to achieve splicing. In order to prevent the inner wall of the profile from being scratched during the bending process of the profile, the head 22.6.2 is provided with a chamfer, and the joint 22.7 is provided with an arc surface.

The mandrel of this embodiment is suitable for the stretch bending process of two cavity structure profiles. The joint unit 1 and the joint unit 2 are spliced by the mandrel connecting rod 22.1. The joint unit 1 and the joint unit 2 correspond to a cavity of the profile. The joint units of this embodiment can be set according to the type of profile. The number of joint units is equal to the number of profile cavities. Each joint unit can be spliced by the mandrel connecting rod 22.1 to form the mandrel body.

During the use of the profile bending equipment, first, the downward pressing mechanism 2 is adjustably mounted on the base 1 through the stud 5.1 and the locking nut 5.2 of the connecting device 5, and is located above the connection between the front clamping cylinder 4.2 and the slide 4.4. After the downward pressing mechanism 2 positions the profile 3 by downward pressing, the front clamping cylinder 4.2 drives the slide 4.4 to move toward the profile 3 on the base 1, that is, the profile 3 fixed on the downward pressing mechanism 2 is pressed by the nylon plate 4.3 in a backward pulling manner to achieve the horizontal positioning of the profile 3. Then, the drawing arm mechanism can conveniently adjust the angle position of the arm body 11 according to the positioning position of the profile 3, clamp the two ends of the profile 3 through the chuck 23 of the left swing arm assembly and the right swing arm assembly, and pre-stretch the profile 3 through the stretching cylinder, and finally drive the left swing arm assembly and the right swing arm assembly to swing by the swing arm cylinder assembly 8, so as to achieve the automatic bending of the profile 3.

During the bending process of the profile 3, the rear support block 4.11 supports the downward pressing mechanism 2 to prevent the downward pressing mechanism 2 from tipping over during the bending process of the profile 3, which can improve the coordination between the horizontal positioning mechanism 4 and the downward pressing mechanism 2 in positioning the profile 3, thereby ensuring the bending quality of the profile 3. During the bending process of the profile 3, the adjustment device can be used to adjust the rotation angle of the tangent point positioning cylinder 6.2 on the mounting seat 6.1 accordingly, and then the tangent point positioning cylinder 6.2 can be controlled to drive the nylon plate 2 6.16 to hold and position the profile 3 positioned on the downward pressing mechanism 2 at the tangent point, so as to achieve positioning of the tangent point of the profile 3 where the large radius turns to the small radius and the tangent point of the transition position between the arc and the straight line segment during the bending process, so as to prevent the tangent point from tilting or shifting during the bending process of the profile 3, thereby ensuring the bending quality of the profile 3. After the profile is stretched and bent, the profile 3 can be punched by the punching mechanism 7 without transferring the formed profile 3 to the punching operation site for repositioning and punching by the punching device, thereby improving the processing efficiency of the profile 3.

The pressing cylinder 2.5 of the present invention is hinged to the pressing cylinder mounting seat 2.6, the upper cover plate 2.4 is hinged to the mold core 2.1, and the upper cover plate 2.4 is hinged to the driving end of the pressing cylinder 2.5, so that the pressing mechanism 2 has three movable joints, which can improve the flexibility and versatility of the pressing mechanism 2. The pressing mechanism 2 is not limited to holding and positioning the profile 3 with a flat end face, but can be used to position the profile 3 with various end faces in the longitudinal direction to ensure the verticality of the profile 3 during the bending process, thereby ensuring the bending quality of the profile 3. In addition, the pressing cylinder 2.5 of the present invention drives the upper cover plate 2.4 to lift and press down, which can facilitate the feeding and discharging of the profile 3.

The material pulling arm mechanism of the present invention is highly practical, and can realize the alignment of the arm body 11 and the profile 3 and the telescopic movement of the arm body 11, thereby improving the efficiency of the bending of the profile 3. Moreover, the material pulling arm mechanism can not only quickly and efficiently realize the insertion of the core rod 22, but also adjust the insertion position of the core rod 22 according to the clamping position of the profile 3, thereby greatly improving the practicality. In addition, the core rod 22 of the material pulling arm mechanism of the present invention is a detachable structure, which can not only support the inner wall of the bending radius of the profile 3 to prevent its deformation, but also facilitate replacement or maintenance, thereby greatly reducing the production cost of the bending of the profile 3. The chuck 23 can realize the detachable connection of the profiling core, which is convenient for the replacement and maintenance of the profiling core; at the same time, the chuck 23 has a rotation function, and can perform secondary twisting processing after the bending process of the profile 3 to meet the processing requirements of the profile 3.

Embodiment 2

The only difference between this embodiment and embodiment 1 is that, as shown in FIG. 24 , the mandrel of this embodiment includes a joint unit, which includes a joint component 12.8 and a mandrel pull rod 12.9, the joint component 12.8 is a movable and detachable structure, and the joint component 12.8, the mandrel pull rod 12.9 and the mandrel connecting rod 12.1 are hinged and detachably connected in sequence.

The mandrel of this embodiment is suitable for the stretch-bending process of a profile having only one cavity structure.

The other structures of this embodiment are consistent with those of the first embodiment.

Embodiment 3

The difference between this embodiment and embodiment 1 is only that: as shown in Figure 25, the joint components, mandrel pull rod and mandrel connecting rod 12.1 of the mandrel of this embodiment are connected in sequence, specifically: joint component 1 of joint unit 1 is hinged to mandrel pull rod 1 12.2, joint component 2 of joint unit 2 is hinged to mandrel pull rod 2 12.5, and mandrel pull rod 1 12.2 and mandrel pull rod 2 12.5 are both connected to mandrel connecting rod 12.1 and form an integrated structure to form the mandrel body.

The other structures of this embodiment are consistent with those of the first embodiment.

The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims (10)

1. A profile stretch bending apparatus, characterized in that: comprising the following steps:

A working platform;

the left swing arm assembly and the right swing arm assembly are used for clamping and stretching two ends of the section bar;

The swing arm oil cylinder assembly is used for driving the left swing arm assembly and the right swing arm assembly to swing;

The left swing arm assembly and the right swing arm assembly are respectively positioned at two sides of the working platform, and the swing arm oil cylinder assembly is connected with the left swing arm assembly and the right swing arm assembly;

The working platform comprises a platform base, a pressing mechanism for longitudinally positioning the section bar, a horizontal positioning mechanism for horizontally positioning the section bar, and a tangential point positioning mechanism for positioning tangential points of the section bar during stretch bending; the pressing mechanism, the horizontal positioning mechanism and the tangential point positioning mechanism are arranged on the base, and the base is detachably connected with the platform seat;

The left swing arm assembly and the right swing arm assembly comprise a swing arm seat body and a material pulling arm mechanism arranged on the swing arm seat body; the swing arm oil cylinder assembly is connected with the swing arm seat body to drive the swing arm seat body to swing; the material pulling arm mechanism comprises a chuck, an arm body, a core penetrating and pulling mechanism, a core rod, an outer frame, a stretching oil cylinder for driving the arm body to stretch and move, a stretching oil cylinder mounting frame and a rotating device for driving the arm body to rotate; the core penetrating and pulling mechanism is arranged in the arm body; the arm body is arranged on the stretching oil cylinder mounting frame in a penetrating manner and is connected with the clamping head, and the stretching oil cylinder is arranged on the stretching oil cylinder mounting frame and is connected with the arm body to realize sliding connection between the arm body and the stretching oil cylinder mounting frame; the stretching oil cylinder is rotationally connected with the outer frame through a rotating device to realize the rotation of the driving arm body so as to align the arm body with the section bar;

The pressing mechanism comprises a mold core, a lower cover plate, an upper cover plate for pressing the profile and a driving unit for driving the upper cover plate to lift and press down; the mold core is connected with the base in an adjustable way, the mold core is connected with the base in a detachable way, and the lower cover plate is connected with the mold core; the driving unit is arranged on the mold core, one side of the upper cover plate is hinged with the mold core, and the other side of the upper cover plate is hinged with the driving end of the driving unit; when the device works, the driving unit drives the upper cover plate to press down to compress and position the section bar placed on the lower cover plate, or drives the upper cover plate to lift up to discharge or blow the section bar;

The horizontal positioning mechanism comprises a front buckling device and a back supporting device for supporting the pressing mechanism in a back mode; the back support device is arranged on the base; the front buckle device comprises a front buckle driving part and a front buckle positioning part, wherein the front buckle driving part is arranged on the base and connected with the front buckle positioning part, so that the front buckle driving part drives the front buckle positioning part to move to horizontally position a section bar positioned on the pressing mechanism, or the front buckle driving part drives the front buckle positioning part to reset;

The tangential point positioning mechanism is arranged on the base and comprises a mounting seat, a tangential point positioning driving component, a top plate and an adjusting device for adjusting the rotation of the tangential point positioning driving component, wherein the mounting seat is arranged on the base; the tangent point positioning driving component is rotatably connected with the mounting seat and is connected with the top plate; one end of the adjusting device is hinged with the mounting seat, the other end of the adjusting device is hinged with the tangential point positioning driving component, and the distance between two hinged positions is adjusted to adjust the rotation angle of the tangential point positioning driving component on the mounting seat, so that the tangential point of the top plate and the profile is opposite, and the tangential point positioning driving component drives the top plate to perform tangential point positioning on the profile positioned on the pressing mechanism;

The core penetrating and pulling mechanism comprises a core penetrating and pulling oil cylinder, a core rod connecting block and a core rod transition block which are all arranged in the arm body; one end of the core rod connecting block is in adjustable and detachable connection with the core rod transition block, and the other end of the core rod connecting block is in detachable connection with the core rod; the core rod transition block is connected with the core penetrating cylinder to realize that the core penetrating cylinder drives the core rod to penetrate into the section bar fixed on the clamping head or the core rod is pulled out from the section bar;

an adjusting groove is formed in the end face, connected with the core rod connecting block, of the core rod transition block;

The core rod connecting block is provided with a fixing part and an adjusting part which are connected with each other; the fixing part is detachably connected with the core rod; the adjusting part is in adjustable and detachable connection with the adjusting groove of the core rod transition block; the adjusting part is provided with a long slot hole, the core rod connecting block is adjusted and clamped in the adjusting groove through the adjusting part, and the core rod connecting block is connected with the core rod transition block through the fastener and the long slot hole;

The mandrel guide plate is used for guiding the mandrel in a penetrating way; the mandrel guide plate is arranged in the chuck;

The core rod guide plate is provided with a through hole for the core rod to pass through, and the through hole is opposite to the core rod.

2. Profile stretch bending apparatus according to claim 1, wherein: the driving unit comprises a pressing driving device and a pressing driving device mounting seat, and the pressing driving device mounting seat is arranged on the mold core; the pushing-down driving device is hinged with the pushing-down driving device mounting seat;

The device also comprises a joint and an upper cover plate mounting seat; the connector is connected with the driving end of the downward-pressing driving device; the upper cover plate mounting seat is connected with the upper cover plate and hinged with the joint.

3. Profile stretch bending apparatus according to claim 1, wherein: the front buckle positioning component comprises a front buckle plate and a sliding seat; the driving end of the front buckle driving part penetrates through the bottom of the mold core and is connected with one side of the sliding seat; the front buckle plate is arranged on the other side of the sliding seat;

the front buckle driving part further comprises a sliding block and a linear guide rail; the linear guide rail is arranged on the base, and the sliding block is arranged at the bottom of the sliding seat and is in sliding connection with the linear guide rail.

4. Profile stretch bending apparatus according to claim 1, wherein: the tangent point positioning driving component is provided with a connecting block; the adjusting device comprises a first transmission part, a second transmission part, an adjusting rod and a nut for locking the adjusting rod; the first transmission part is hinged with the connecting block, and the second transmission part is hinged with the mounting seat; the adjusting rod is sleeved on the first transmission part and the second transmission part, the nuts are positioned on two sides of the adjusting rod, and the adjusting rod is rotated to drive the first transmission part and the second transmission part to open and close and lock through the nuts so as to adjust the distance between the two hinged parts.

5. Profile stretch bending apparatus according to claim 1, wherein: the working platform further comprises a punching mechanism for punching the section bar positioned on the pressing mechanism; the punching mechanism is detachably connected with the base.

6. Profile stretch bending apparatus according to claim 1, wherein: the rotating device comprises a reset oil cylinder, a reset oil cylinder mounting frame, a reset oil cylinder connecting sleeve and a reset oil cylinder connecting shaft; the stretching oil cylinder is connected with the outer frame through a reset oil cylinder connecting shaft; the reset oil cylinder is arranged on the stretching oil cylinder through a reset oil cylinder mounting frame, a reset oil cylinder connecting sleeve is sleeved on a reset oil cylinder connecting shaft, and the driving end of the reset oil cylinder is connected with the reset oil cylinder connecting sleeve to realize that the reset oil cylinder drives the stretching oil cylinder to be rotationally connected with the outer frame so as to drive the movable arm body to rotate;

the working modes of the reset oil cylinder comprise an active driving working mode and a follow-up working mode, and the working modes of the reset oil cylinder are mutually switched between the active driving working mode and the follow-up working mode.

7. Profile stretch bending apparatus according to claim 1, wherein: the core rod comprises a knuckle unit and a core rod connecting rod; the joint unit comprises a joint component and a core rod pull rod, and the joint component is of a movable detachable structure; the joint component, the core rod pull rod and the core rod connecting rod are hinged and detachably connected in sequence.

8. Profile stretch bending apparatus according to claim 1, wherein: the core rod comprises a knuckle unit and a core rod connecting rod; the joint unit comprises a joint component and a core rod pull rod, and the joint component is of a movable detachable structure; the joint component, the core rod pull rod and the core rod connecting rod are sequentially connected.

9. The profile stretch bending apparatus according to claim 7, wherein: the number of the joint units is more than two; the joint component, the core rod pull rod and the core rod connecting rod are hinged and detachably connected in sequence, namely: each joint component is spliced with the core rod connecting rod through the core rod pull rod and is detachably connected with the core rod connecting rod to form a core rod body; the joint units are arranged in parallel, and a gap for inserting the section bar partition plate is arranged between the adjacent joint units.

10. The profile stretch bending apparatus according to claim 8, wherein: the number of the joint units is more than two; the joint component, the core rod pull rod and the core rod connecting rod are sequentially connected: each joint component is hinged with a core rod pull rod, and the core rod pull rod is connected with the core rod connecting rod and is of an integrated structure to form a core rod body; the joint units are arranged in parallel, and a gap for inserting the section bar partition plate is arranged between the adjacent joint units.