Bending machine for sectional materials

Abstract

The bending machine comprises a conveying mechanism used for conveying the sectional materials, a bending mechanism arranged above the conveying mechanism, a side jacking mechanism and a bending lifting mechanism, and the bending mechanism comprises an expansion strip used for being placed in a rail groove, a translation driving seat used for driving the expansion strip and a bending driving mechanism; the expansion strip comprises a flexible pipe body and a sealing block with an oval section, the bending mechanism further comprises a rotation driving mechanism used for driving the sealing block to rotate, and the sealing block is installed on the translation driving seat through the rotation driving mechanism; the sealing blocks are arranged at pipe openings in the two ends of the flexible pipe body so that a sealed expansion space can be formed in the flexible pipe body, the sealing blocks are provided with vent holes communicated with the expansion space, and the vent holes are connected into a pump body so as to control expansion and contraction of the flexible pipe body. By the adoption of the bending device, the sectional material with the multiple track grooves can be bent, and bad deformation of the sectional material is not prone to occurring.

Description

Technical Field

[0001] The invention relates to the technical field of profile processing equipment, and in particular to a bending machine. Background Art

[0002] Conventional bending of existing profiles is generally performed by rolling wheels arranged in a triangular shape, and this processing method generally processes products with relatively stable structures and small bending dimensions. However, for profiles with multiple track grooves, the width dimension is relatively large. At the same time, when the horizontal plane relative to the width dimension needs to be bent, the structure of the intermediate separating track grooves is prone to destructive bending. At the same time, due to the large width dimension of the profile, direct rolling bending requires a great rolling force, which can easily damage the profile. Summary of the invention

[0003] The technical problem to be solved by the embodiments of the present invention is to provide a bending machine that can bend a profile with multiple track grooves without causing adverse deformation of the profile.

[0004] In order to solve the above technical problems, an embodiment of the present invention provides a bending machine for bending a profile having a plurality of track grooves, the bending machine comprising a transport mechanism for transporting the profile, a bending mechanism arranged above the transport mechanism, a side top mechanism arranged on one side of the transport mechanism, and a bending lifting mechanism for driving the bending mechanism to rise and fall, the profile is moved to the bottom of the bending mechanism by the transport mechanism, the bending mechanism is lowered to the profile by the bending lifting mechanism, so as to bend the profile toward the side top mechanism;

[0005] Wherein, the bending mechanism comprises an expansion strip for inserting into the track groove, a translation drive seat for driving the expansion strip, and a bending drive mechanism for driving the translation drive seat to move toward the side top mechanism;

[0006] The expansion strip includes a flexible tube body and a sealing block with an elliptical cross section, the bending mechanism also includes a rotation driving mechanism for driving the sealing block to rotate, and the sealing block is installed on the translation driving seat through the rotation driving mechanism;

[0007] The sealing blocks are arranged at the two end pipe openings of the flexible tube body to form a sealed expansion space in the flexible tube body. The sealing blocks are provided with vents connected to the expansion space. The vents are connected to the pump body to control the expansion and contraction of the flexible tube body.

[0008] As an improvement of the above solution, the major axis length of the sealing block is greater than the width of the track groove in which it is inserted, and the minor axis length of the sealing block is less than the width of the track groove in which it is inserted, so that the expansion strip can be inserted into the track groove of the profile.

[0009] As an improvement of the above solution, the sealing block includes a rotating shaft sleeve for connecting to the rotation drive mechanism and a deformation buffer layer for wrapping the rotating shaft sleeve, and the side wall of the rotating shaft sleeve is wrapped with the deformation buffer layer to form an elliptical contour.

[0010] As an improvement of the above scheme, the vent hole is arranged in the deformation buffer layer, one port of the vent hole is arranged on the top surface of the deformation buffer layer for connecting to the pump body, and the other port of the vent hole is arranged on the side wall of the deformation buffer layer to communicate with the expansion space.

[0011] As an improvement of the above-mentioned scheme, the side pressing mechanism includes a pressing block and a pressing driving mechanism for driving the pressing block to press against the profile. The pressing block is provided with a pressing side wall with a preset contour. The profile is pressed against the pressing side wall through the sealing block so that the profile is bent and deformed along the preset contour.

[0012] As an improvement of the above solution, the rotation drive mechanism includes an output shaft connected to the rotating shaft sleeve, a motor body for driving the output shaft to rotate, and an auxiliary torsion spring, and the rotating shaft sleeve is sleeved on the output shaft;

[0013] One end of the auxiliary torsion spring is connected to the rotating shaft sleeve, and the other end is connected to the main body housing, so that the initial rotation resistance of the sealing block is increased through the auxiliary torsion spring.

[0014] As an improvement of the above solution, the deformation buffer layer is made of elastic material, and the profile of the rotating shaft sleeve is elliptical and is made of hard material.

[0015] As an improvement of the above solution, the bending lifting mechanism includes a lifting frame for installing the bending mechanism and a lifting drive mechanism for driving the lifting frame to lift, and the bending drive mechanism is arranged on both sides of the lifting frame;

[0016] The lifting frame is provided with an auxiliary pressure mechanism, which includes a pressure plate corresponding to the expansion strip and a downward pressure driving mechanism for driving the pressure plate to press against the expansion strip. After the expansion strip is placed in the track groove, the downward pressure driving mechanism drives the pressure plate to close the track groove to limit the expansion of the expansion strip in the track groove.

[0017] As an improvement of the above solution, the transport mechanism includes a transport roller group and a synchronous drive mechanism for supporting the transport profile, the transport roller group includes a plurality of drive rollers, and the synchronous drive mechanism drives each of the drive rollers to rotate;

[0018] The driving rollers are distributed on both sides of the bending driving assembly.

[0019] As an improvement of the above solution, along the length direction of the expansion strip, a plurality of magnet sheets are provided at intervals on the top of the expansion strip, and the pressure plate is provided with magnet blocks corresponding to the magnet sheets one by one.

[0020] The implementation of the present invention has the following beneficial effects:

[0021] The embodiment of the present invention discloses a bending machine, comprising a transport mechanism for transporting profiles, a bending mechanism arranged above the transport mechanism, a side lift mechanism arranged on one side of the transport mechanism, and a bending and lifting mechanism for driving the bending mechanism to rise and fall. The profile is moved to the bottom of the bending mechanism through the transport mechanism, and the bending mechanism is lowered to the profile through the bending and lifting mechanism to bend the profile toward the side lift mechanism, so as to cooperate with the side lift mechanism to jointly apply force to bend the profile, thereby reducing the probability of destructive deformation of the profile.

[0022] Moreover, the bending mechanism includes an expansion strip for being inserted into the track groove, a translation driving seat for driving the expansion strip, and a bending driving mechanism for driving the translation driving seat to move toward the side top mechanism; the expansion strip includes a flexible tube body, a sealing block with an elliptical cross-section, and a rotation driving mechanism for driving the sealing block to rotate, and the sealing block is installed on the translation driving seat through the rotation driving mechanism; the sealing blocks are arranged at the two end pipe openings of the flexible tube body to form a sealed expansion space in the flexible tube body, and the sealing block is provided with a vent hole connected to the expansion space, and the vent hole is connected to the pump body to control the expansion and contraction of the flexible tube body.

[0023] Therefore, when bending is required, the bending lifting mechanism drives the expansion strip to be placed in the corresponding track groove of the profile, and then injects gas into the expansion space through the vent hole to fill the track groove, so that when the profile is bent, the partition structure between adjacent track grooves can be supported laterally, so that the profile can obtain a bending effect with uniform force, which greatly reduces the problem of destructive deformation caused by excessive local stress. Correspondingly, when bending is completed, the gas in the expansion space can be extracted through the vent hole to shrink the expansion strip, so that the bending lifting mechanism can drive the expansion strip out of the track groove, so that the profile after bending can continue to be sent to the preset location through the transportation mechanism.

[0024] Moreover, the elliptical design of the sealing block and the setting of the rotating drive mechanism enable the rotation of the sealing block to be controlled by the rotating drive mechanism during the bending process of the profile, so that the sealing block maintains contact with the side wall of the track groove and has a contact surface with a good area, thereby reducing the situation where the local stress of the groove wall of the track groove is excessive. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the bending machine of the present invention;

[0026] Figure 2 is a structural schematic diagram of the bending mechanism of the present invention from another angle;

[0027] Figure 3 It is a structural schematic diagram of the bending mechanism of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the sealing block and the rotary drive mechanism of the present invention. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] See also Figure 1-4 The embodiment of the present invention provides a bending machine for bending a profile having a plurality of track grooves a, comprising a transport mechanism 1 for transporting the profile, a bending mechanism 2 arranged above the transport mechanism 1, a side top mechanism 3 arranged on one side of the transport mechanism 1, and a bending lifting mechanism 4 for driving the bending mechanism 2 to rise and fall. The profile is moved to the bottom of the bending mechanism 2 through the transport mechanism 1, and the bending mechanism 2 is lowered to the profile through the bending lifting mechanism 4 to bend the profile toward the side top mechanism 3;

[0031] The bending mechanism 2 includes an expansion strip 21 for inserting into the track groove a, a translation drive seat 22 for driving the expansion strip 21, and a bending drive mechanism for driving the translation drive seat 22 to move toward the side top mechanism 3;

[0032] The expansion strip 21 includes a flexible tube body 211 and a sealing block 212 with an elliptical cross section. The bending mechanism also includes a rotation driving mechanism 23 for driving the sealing block 212 to rotate. The sealing block 212 is installed on the translation driving seat 22 through the rotation driving mechanism 23.

[0033] The sealing block 212 is arranged at the two end pipe openings of the flexible tube body 211 to form a sealed expansion space in the flexible tube body 211. The sealing block 212 is provided with a vent hole 213 connected to the expansion space. The vent hole 213 is connected to the pump body 7 to control the expansion and contraction of the flexible tube body 211.

[0034] The side pressing mechanism 3 includes a pressing block 31 and a pressing driving mechanism 32 for driving the pressing block 31 to press against the profile. The pressing block 31 is provided with a pressing side wall 311 with a preset contour. The profile is pressed against the pressing side wall 311 through the sealing block 212 so that the profile is bent and deformed along the preset contour.

[0035] Preferably, the side push mechanism 3 can be arranged on both sides of the profile. The push drive mechanism 32 is preferably a pneumatic telescopic rod mechanism, a hydraulic telescopic rod mechanism or a screw transmission mechanism in the prior art.

[0036] Specifically, the length of the major axis of the sealing block 212 is greater than the width of the track groove a into which it is inserted, and the length of the minor axis of the sealing block 212 is less than the width of the track groove a into which it is inserted, so that the expansion strip 21 can be inserted into the track groove a of the profile, and the pipe opening of the flexible pipe body 211 is sealed by the cross-sectional profile at the major axis of the sealing block 212 to ensure that both ends of the expansion strip 21 can contact the groove wall of the track groove a. Correspondingly, the length of the minor axis of the sealing block 212 is less than the width of the track groove a into which it is inserted, so that the expansion strip 21 and the sealing block 212 can be inserted into the track groove a. Therefore, by controlling the rotation of the sealing block 212, whether it is clamped and fixed to the profile can be achieved.

[0037] The sealing block 212 includes a rotating shaft sleeve 2121 for connecting to the rotating drive mechanism 23 and a deformation buffer layer 2122 for wrapping the rotating shaft sleeve 2121. The side wall of the rotating shaft sleeve 2121 is wrapped with the deformation buffer layer 2122 to form an elliptical profile. The arrangement of the deformation buffer layer 2122 can better fit the groove wall of the track groove a, thereby avoiding the problem of excessive local stress during the bending process of the profile.

[0038] Moreover, for the elliptical design of the outer contour of the sealing block 212, an elliptical contour with a matching eccentricity can be selected according to the curvature requirements of the bending process, that is, the larger the eccentricity, the flatter the ellipse is relatively, and the smaller the eccentricity, the rounder the ellipse is relatively.

[0039] Furthermore, in order to ensure the bending shaping effect of the sealing block 212, the deformation buffer layer 212 is made of elastic material, and the profile of the rotating shaft sleeve 2121 is elliptical and made of hard material. This is to avoid the elastic deformation space of the sealing block 212 being too large, which may cause random undesirable deformation during the bending deformation process. Common elastic materials include silicone, rubber, polyurethane, plastic, etc.

[0040] The vent hole 213 is provided in the deformation buffer layer, one end of the vent hole 213 is provided on the top surface of the deformation buffer layer 2122 to be connected to the pump body, and the other end of the vent hole 213 is provided on the side wall of the deformation buffer layer 2122 to be connected to the expansion space. As the deformation buffer layer is made of elastic material, when the sealing block 212 rotates to cause compression deformation with the track groove a, the vent hole 213 will collapse to block the gas from flowing back from the vent hole to the pump body.

[0041] Since the sealing block 212 needs to provide resistance in the opposite direction of the bending, in order to reduce the power output requirement of the motor body, the rotation drive mechanism 23 includes an output shaft 231 connected to the rotating shaft sleeve, a motor body 232 for driving the output shaft 231 to rotate, and an auxiliary torsion spring 233. The rotating shaft sleeve 2121 is sleeved on the output shaft 231; one end of the auxiliary torsion spring 233 is connected to the rotating shaft sleeve 2121, and the other end is connected to the motor body 232, so as to increase the initial rotation resistance of the sealing block 212 through the auxiliary torsion spring 233. Thereby, the auxiliary torsion spring 233 can cooperate with the rotation drive mechanism 23 to apply force during the bending process of the profile. Preferably, the output shaft 231 can be equipped with a ratchet mechanism to lock the rotation of the output shaft in one direction.

[0042] The bending and lifting mechanism 4 includes a lifting frame 41 for installing the bending mechanism 2 and a lifting drive mechanism 42 for driving the lifting frame 41 to lift and lower. The bending drive mechanism is arranged on both sides of the lifting frame 41; the bending drive mechanism is preferably a screw transmission mechanism in the prior art, and the translation drive seat 22 is provided with a screw hole 221 adapted to the screw of the screw transmission mechanism.

[0043] The lifting frame 41 is provided with an auxiliary pressure mechanism, which includes a pressure plate 43 corresponding to the expansion strip 21 and a downward pressure driving mechanism 44 for driving the pressure plate to press against the expansion strip 21. After the expansion strip 21 is placed in the track groove a, the downward pressure driving mechanism 44 drives the pressure plate 43 to close the track groove a to limit the expansion of the expansion strip 21 in the track groove a, so that the track groove a can be fully filled, thereby further reducing the situation where the local stress of the groove wall of the track groove a is excessive.

[0044] The transport mechanism 1 includes a transport roller group and a synchronous drive mechanism for supporting the transport profile, the transport roller group includes a plurality of drive rollers 11, and the synchronous drive mechanism drives each of the drive rollers to rotate; the synchronous drive mechanism includes a synchronous belt and a motor for driving the synchronous belt, and the motor drives each of the drive rollers 11 to rotate through the synchronous belt.

[0045] On the other hand, since the expansion strip 21 becomes soft after shrinking, it may be staggered with the adjacent expansion strip 21, thus affecting the one-to-one placement of the expansion strip 21 in the corresponding track groove a. Therefore, along the length direction of the expansion strip 21, a plurality of magnet pieces 5 are arranged at intervals on the top of the expansion strip 21, and the pressing plate 43 is provided with magnet blocks 6 corresponding to the magnet pieces 5 one by one, so that the expansion strip 21 can maintain a straight line state corresponding to the track groove a after shrinking.

[0046] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A bending machine for profiles, used for bending profiles with multiple track grooves, characterized in that: It comprises a transport mechanism for transporting profiles, a bending mechanism arranged above the transport mechanism, a side top mechanism arranged on one side of the transport mechanism, and a bending and lifting mechanism for driving the bending mechanism to rise and fall. The profile is moved to the bottom of the bending mechanism through the transport mechanism, and the bending mechanism is lowered to the profile through the bending and lifting mechanism to bend the profile toward the side top mechanism. Wherein, the bending mechanism comprises an expansion strip for inserting into the track groove, a translation drive seat for driving the expansion strip, and a bending drive mechanism for driving the translation drive seat to move toward the side top mechanism; The expansion strip includes a flexible tube body and a sealing block with an elliptical cross section, the bending mechanism also includes a rotation driving mechanism for driving the sealing block to rotate, and the sealing block is installed on the translation driving seat through the rotation driving mechanism; The sealing blocks are arranged at the two end pipe openings of the flexible tube body to form a sealed expansion space in the flexible tube body. The sealing blocks are provided with vents connected to the expansion space. The vents are connected to the pump body to control the expansion and contraction of the flexible tube body.

2. The bending machine according to claim 1, characterized in that The major axis length of the sealing block is greater than the width of the track groove in which it is placed, and the minor axis length of the sealing block is less than the width of the track groove in which it is placed, so that the expansion strip can be placed in the track groove of the profile.

3. The bending machine according to claim 2, characterized in that: The sealing block comprises a rotating shaft sleeve for connecting with the rotary drive mechanism and a deformation buffer layer for wrapping the rotating shaft sleeve, and the side wall of the rotating shaft sleeve is wrapped with the deformation buffer layer to form an elliptical profile.

4. The bending machine according to claim 3, characterized in that: The vent hole is arranged in the deformation buffer layer, one end of the vent hole is arranged on the top surface of the deformation buffer layer for connecting to the pump body, and the other end of the vent hole is arranged on the side wall of the deformation buffer layer for communicating with the expansion space.

5. The bending machine according to claim 1, characterized in that: The side pressing mechanism includes a pressing block and a pressing driving mechanism for driving the pressing block to press against the profile. The pressing block is provided with a pressing side wall with a preset contour. The profile is pressed against the pressing side wall through the sealing block so that the profile is bent and deformed along the preset contour.

6. The bending machine according to claim 1, characterized in that: The rotation drive mechanism comprises an output shaft connected to the rotating shaft sleeve, a motor body for driving the output shaft to rotate, and an auxiliary torsion spring, wherein the rotating shaft sleeve is sleeved on the output shaft; One end of the auxiliary torsion spring is connected to the rotating shaft sleeve, and the other end is connected to the main body housing, so that the initial rotation resistance of the sealing block is increased through the auxiliary torsion spring.

7. The bending machine according to claim 3, characterized in that: The deformation buffer layer is made of elastic material, and the rotating shaft sleeve has an elliptical profile and is made of hard material.

8. The bending machine according to claim 6, characterized in that The bending lifting mechanism comprises a lifting frame for installing the bending mechanism and a lifting driving mechanism for driving the lifting frame to lift, and the bending driving mechanism is arranged on both sides of the lifting frame; The lifting frame is provided with an auxiliary pressure mechanism, which includes a pressure plate corresponding to the expansion strip and a downward pressure driving mechanism for driving the pressure plate to press against the expansion strip. After the expansion strip is placed in the track groove, the downward pressure driving mechanism drives the pressure plate to close the track groove to limit the expansion of the expansion strip in the track groove.

9. The bending machine according to claim 8, characterized in that The transport mechanism comprises a transport roller group and a synchronous driving mechanism for supporting and transporting the profile, wherein the transport roller group comprises a plurality of driving rollers, and the synchronous driving mechanism drives each of the driving rollers to rotate; The driving rollers are distributed on both sides of the bending driving assembly.

10. The bending machine according to claim 8, characterized in that Along the length direction of the expansion strip, a plurality of magnet sheets are arranged at intervals on the top of the expansion strip, and the pressing plate is provided with magnet blocks corresponding to the magnet sheets one by one.

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