Special-shaped part stretching and bending machine

Abstract

The invention relates to a stretching and bending machine for special-shaped parts, and relates to the technical field of bending. The machining device comprises a machining table, a die and a clamp, the die and the clamp are arranged on the machining table, the side wall of the die is provided with a curved surface consistent with the bending angle of the special-shaped part, and a machining space for a profile to be inserted is reserved between the clamp and the die; the clamp is used for clamping a profile, a driving assembly is arranged on the machining table, and the driving assembly is used for driving the clamp to move relative to the machining table, so that the curved surface of the mold is completely attached to the surface of the profile; the special-shaped part bending device has the effect of improving the bending consistency of special-shaped parts produced in batches.

Description

Technical Field

[0001] The present application relates to the technical field of bending, and in particular to a stretch bending machine for special-shaped parts. Background Art

[0002] Special-shaped parts refer to parts with special shapes or structures. The production process of special-shaped parts is bound to be inseparable from the bending process. The bending process refers to the process of bending the profile to a certain angle to form a special-shaped part.

[0003] At present, the bending processing method for forming special-shaped parts generally uses a clamp to clamp the two ends of the profile, and then manually drives the clamp to move, so that the two ends of the profile rotate around the same fixed point under the drive of the clamp, so that the profile is bent at the aforementioned fixed point. When the special-shaped parts are bent in this way, the operator manually controls the bending angle of the special-shaped parts, which is not accurate enough, which easily leads to poor bending consistency of special-shaped parts produced in batches, so it needs to be improved. Summary of the invention

[0004] In order to improve the consistency of bending processing of special-shaped parts produced in batches, the present application provides a special-shaped part stretching and bending machine.

[0005] The present application provides a special-shaped part stretching and bending machine, which adopts the following technical solution: A stretching and bending machine for special-shaped parts comprises a processing table, a mold and a clamp arranged on the processing table, the side wall of the mold is provided with a curved surface consistent with the bending angle of the special-shaped part, and a processing space for inserting the profile is reserved between the clamp and the mold; the clamp is used to clamp the profile, and a driving component is provided on the processing table, and the driving component is used to drive the clamp to move relative to the processing table so that the curved surface of the mold is completely in contact with the surface of the profile.

[0006] By adopting the above technical solution, a mold is set on a processing table, and the mold is limited to have a curved surface consistent with the bending angle of the special-shaped part, and then the profile is clamped by a fixture to achieve the positioning of the profile, and then the driving component is used to drive the fixture to move relative to the processing table, such as moving in the direction close to the mold curved surface, so that the profile is affected by the movement of the fixture and bends until the entire curved surface of the mold is attached to the surface of the profile, thereby completing the bending to form the special-shaped part. In this process, the curved surface of the mold is used as a reference to determine the bending angle of the profile, and finally, in the bending process of batch profiles, the effect of improving the consistency of the bending angle of batch profiles can be achieved.

[0007] Preferably, it further includes a controller, and the drive assembly is controlled by the controller. The controller is used to obtain the clamping position of the clamp on the profile, and based on the clamping position, determine the final position of the clamp on the processing table relative to the mold when the mold surface is completely in contact with the profile; the controller is also used to control the drive assembly to drive the clamp to move to the final position after determining the final position of the clamp.

[0008] By adopting the above technical solution, the controller is used to identify the clamping position of the clamp on the profile, and the final position of the clamp on the processing table when the bending process is finally completed is calculated. The drive component is then controlled to drive the clamp to the final position to achieve the fitting of the mold surface and the profile. The automatic positioning of the controller is used to improve the intelligence and automation level of the bending process, and also improve the efficiency of the bending process.

[0009] Preferably, the driving assembly includes a main shaft, a support plate rotating around the main shaft, a slider sliding along the length direction of the support plate, a rotating member for driving the support plate to rotate around the main shaft, and a first sliding member for driving the slider to slide along the length direction of the support plate; the support plates and the clamps are arranged in a one-to-one correspondence, and the clamps are arranged on the sliders of the corresponding support plates; the center of the bending position of the profile is arranged concentrically with the axis of the main shaft.

[0010] By adopting the above technical solution, the support plate rotates around the main shaft, and the slider slides relative to the support plate to adjust the clamping position of the profile by the clamp. Since the center of the bending position of the profile is concentric with the axis of the main shaft, the corresponding support plate is driven to rotate around the main shaft through the rotating member, so that the clamping position rotates around the center of the bending position of the profile, thereby allowing the clamp to drive the clamping position to move to the final position during the rotation of the support plate.

[0011] Preferably, the top of the spindle passes through the processing table and is located in the processing space. A negative pressure port is opened at the top of the spindle. An adsorption part is provided on the processing table. The adsorption part is used to extract air at the negative pressure port so that negative pressure is formed at the negative pressure port. The top wall of the spindle located at the negative pressure port is used to fit with the surface of the profile in the processing space.

[0012] By adopting the above technical solution, the negative pressure port and the adsorption member are used to adsorb the profile, thereby fixing the position of the profile relative to the processing table, reducing the deviation of the profile, and ensuring that the clamp can quickly clamp the profile.

[0013] Preferably, a feeding rack is provided on the processing table, and a feeding cavity for inserting profiles is opened along the height direction of the feeding rack, and the feeding cavity is located directly above the processing space, and the feeding cavity is communicated with the processing space.

[0014] By adopting the above technical solution, the profile to be bent is installed through the feeding cavity. Since the feeding cavity is located directly above the processing space, the profile located at the bottom of the feeding cavity can fall into the processing space under the action of its own weight, realizing automatic and convenient loading.

[0015] Preferably, the mold is slidably connected to the bottom of the feed rack, and the profile in the processing space is located on the sliding path of the mold; the clamp is lifted and connected to the processing table, and the clamp can be lowered to a position flush with the surface of the processing table.

[0016] By adopting the above-mentioned technical scheme, this scheme limits the mold to be able to slide relative to the feed rack, and the profile is located in the sliding direction of the mold. On the one hand, this limiting scheme can use the sliding of the mold to push the profile located in the processing space away from the processing space, that is, push it away from under the feed rack, so as to facilitate the removal of the processed special-shaped parts. On the other hand, the sliding of the mold can also enable the special-shaped part stretching and bending machine of the present application to adapt to the bending processing of profiles of different widths, so as to ensure that the mold can always be in contact with the bending point of the profile.

[0017] Preferably, a cam is rotatably connected to the processing table, the cam is located on the side of the mold away from the processing space, and the mold is located on the rotation path when the cam rotates, and a reset spring is commonly provided between the mold and the feed rack, the expansion and contraction direction of the reset spring is parallel to the sliding direction of the mold, and when the reset spring is not deformed, the mold is located on one side of the processing space.

[0018] By adopting the above technical solution, the cam is used to push the mold during the rotation process, so that the mold moves toward the processing space. When the cam releases the push on the mold, the mold will move and reset in the direction of the processing space under the elastic force of the reset spring.

[0019] Preferably, the processing table is provided with a lever, a first lifting member for driving the lever to rise and fall, and a second sliding member for driving the lever to slide toward or away from the processing space. The processing table is also provided with a downwardly inclined slope, which is located on the sliding path of the lever when it slides toward or away from the processing space.

[0020] By adopting the above technical solution, when the bent profile is pushed out of the processing space by the mold, the first lifting member drives the lever to move downward until it contacts the profile, and then the second sliding member drives the lever to move in the direction of the slope, so that the profile is completely discharged from the processing space under the push of the lever, and is separated from the processing table under the inclined guidance of the slope, thereby realizing material discharge.

[0021] Preferably, the mold is detachably connected to the processing table.

[0022] By adopting the above technical solution, the mold can be detachably connected to the processing table, so that according to the production and processing needs, the mold with the required style and structure can be selected to realize the bending of the profile, thereby improving the applicability and saving the bending cost of profiles with different bending angles.

[0023] Preferably, the processing table is provided with a heating element for heating the curved surface of the mold.

[0024] By adopting the above technical solution, the mold surface is heated so that when the mold contacts the profile, the heat is transferred to the profile to achieve heating treatment of the profile, thereby improving the plasticity of the profile, reducing the hardness of the profile, and reducing the internal stress concentration when the profile is bent, which leads to cracking at the bending part.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting a mold on a processing table and limiting the mold to have a curved surface consistent with the bending angle of the special-shaped part, and then clamping the profile with a fixture to achieve the positioning of the profile, and then using a driving component to drive the fixture to move relative to the processing table, such as moving in the direction close to the mold curved surface, so that the profile is affected by the movement of the fixture and bends until the entire curved surface of the mold is in contact with the surface of the profile, thereby completing the bending to form a special-shaped part. In this process, the curved surface of the mold is used as a reference to determine the bending angle of the profile, and finally, in the bending process of batch profiles, the effect of improving the consistency of the bending angle of batch profiles can be achieved; 2. This solution stipulates that the mold can slide relative to the feed rack, and the profile is located in the sliding direction of the mold. On the one hand, this limited solution can use the sliding of the mold to push the profile located in the processing space away from the processing space, that is, push it away from under the feed rack, so as to facilitate the removal of the processed special-shaped parts. On the other hand, the sliding of the mold can also enable the special-shaped part stretching and bending machine of this application to adapt to the bending processing of profiles of different widths to ensure that the mold can always be in contact with the bending point of the profile. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a special-shaped part stretching and bending machine disclosed in an embodiment of the present application.

[0027] Figure 2 It is a top view used to reflect the positional relationship between the mold, profile, and fixture on the upper surface of the processing table in the embodiment of the present application.

[0028] Figure 3 It is a structural block diagram used to reflect the connection relationship between the controller and the drive component in the embodiment of the present application.

[0029] Figure 4 yes Figure 1 Sectional view along AA direction.

[0030] Figure 5 It is a cross-sectional view used to reflect the positional relationship between the clamp and the support plate in the embodiment of the present application.

[0031] Figure 6 yes Figure 1 Cross-sectional view along the BB axis.

[0032] Explanation of the accompanying drawings: 1. Processing table; 11. Processing space; 12. Mould; 121. Heating element; 123. Return spring; 13. Cam; 14. Push rod; 15. First lifting element; 16. Second sliding element; 17. Ramp; 2. Clamp; 21. Clamp rod; 22. Adjusting element; 23. Second lifting element; 3. Driving assembly; 31. Spindle; 311. Negative pressure port; 312. Adsorption element; 32. Support plate; 33. Sliding block; 34. Rotating element; 35. First sliding element; 4. Controller; 41. Visual inspection module; 42. Control module; 5. Feed rack; 51. Feed cavity; 6. Profile. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-6 This application is described in further detail.

[0034] The embodiment of the present application discloses a stretch bending machine for special-shaped parts. Figure 1 , Figure 2 and Figure 3 The stretch bending machine for special-shaped parts includes a processing table 1, on which a processing space 11 is provided for placing a profile 6 to be bent. A mold 12, a fixture 2 and a drive assembly 3 are provided on the processing table 1. The mold 12 is arranged on the processing table 1. A heating element 121 for heating the mold 12 is provided inside the mold 12. The heating element 121 can be a heating wire. The side wall of the mold 12 is provided with a curved surface consistent with the bending angle of the special-shaped part. The fixture 2 is located on the processing table 1 near the processing space 11. The fixture 2 is used to clamp the profile 6. The drive assembly 3 is used to drive the fixture 2 to move relative to the processing table 1, so that the curved surface of the mold 12 is completely attached to the surface of the profile 6, so as to realize the bending of the profile 6, and the curved surface of the mold 12 is used as a reference to ensure the accuracy of the bending angle of the profile 6.

[0035] Reference Figure 1 , Figure 2 and Figure 3, and also includes a controller 4, the controller 4 includes a visual inspection module 41 and a control module 42, the visual inspection module 41 is electrically connected to the control module 42, the visual inspection module 41 is used to capture images of the processing table 1, the fixture 2 on the processing table 1, and the profile 6 clamped by the fixture 2, the control module 42 is used to obtain the aforementioned image, and based on the aforementioned image, obtain the clamping position of the fixture 2 on the profile 6, the clamping position is specifically expressed as the position of the fixture 2 on the processing table 1, specifically, a two-dimensional coordinate system can be established based on the image, such as taking the bending point of the profile (i.e., the position shown by the arrow C in the figure) as the origin, and expressing the clamping position in the form of two-dimensional coordinates.

[0036] The control module 42 is also used to determine the length l of the profile 6 between the clamping position and the bending point of the profile according to the clamping position, and then determine the final position of the fixture 2 on the processing table 1 when the curved surface of the mold 12 is completely attached to the profile 6 (that is, when the bending process of the profile 6 is completed) based on the pre-stored correspondence table. Among them, the correspondence table contains the reference image of the bent special-shaped part on the processing table 1 when the profile 6 is bent into different angles; and it should be emphasized that the position coordinates of the profile bending point in all the reference images mentioned in the embodiments of the present application and the bending point of the profile 6 on the current processing table 1 are the same, and are all the origins of the established two-dimensional coordinate system. Accordingly, the controller 4 finds the reference image of the special-shaped part that is consistent with the curved surface bending angle of the current mold 12 from the correspondence table, and then determines the final position corresponding to the clamping position from the reference image according to the length l of the profile 6 determined above.

[0037] The driving assembly 3 is controlled by the control module 42. The control module 42 is also used to control the driving assembly 3 to drive the clamp 2 to move to the final position after determining the final position, so that the clamp 2 drives the clamped profile 6 to move and be stretched and bent during the movement. It should be noted that the profile 6 mentioned in the present application is made of a material that has a plastic shape and can be bent and stretched.

[0038] Reference Figure 2 and Figure 4The driving assembly 3 includes a main shaft 31, a support plate 32, a slider 33, a rotating member 34 and a first sliding member 35. The support plate 32, the slider 33 and the fixture 2 are arranged in a one-to-one correspondence, and each support plate 32 corresponds to a rotating member 34 and a first sliding member 35. The rotating member 34 is arranged on the processing table 1, and the driving shaft of the rotating member 34 is coaxially arranged with the axis of the main shaft 31. The rotating member 34 in the embodiment of the present application is specifically a motor. The driving shaft of the rotating member 34 is connected to the corresponding support plate 32, and the support plate 32 is embedded in the surface of the processing table 1. The slider 33 is connected to the surface of the corresponding support plate 32 by sliding along the length direction of the support plate 32. The first sliding member 35 is used to drive the corresponding slider 33 to slide along the length direction of the corresponding support plate 32. The first sliding member 35 disclosed in the embodiment of the present application is a motor screw combination structure.

[0039] Reference Figure 2 , Figure 4 and Figure 5 The clamp 2 is installed on the corresponding slider 33. The clamp 2 specifically includes at least two clamping rods 21 symmetrically arranged on the upper surface of the slider 33, an adjusting member 22 for driving the clamping rod 21 to move toward or in the opposite direction, and a second lifting member 23 for driving the clamping rod 21 to move up and down. The second lifting member 23 and the adjusting member 22 can both be a combination structure of a motor screw, and the clamping rod 21 can be moved down to a position not higher than the surface of the processing table 1.

[0040] The top of the spindle 31 passes through the processing table 1 and is flush with the surface of the processing table 1. The processing space 11 is located directly above the spindle 31. A number of negative pressure ports 311 are opened on the top wall of the spindle 31. The negative pressure ports 311 are connected to adsorption components 312. The adsorption components 312 are used to extract air at the negative pressure ports 311 to form negative pressure at the negative pressure ports 311. By way of example, the adsorption components 312 in the embodiment of the present application can specifically be an air pump connected to the negative pressure ports 311 through a pipeline; the top wall of the spindle 31 is fixedly connected to the profile 6 in the processing space 11 through the adsorption components 312.

[0041] Reference Figure 2 , Figure 4 and Figure 5 A feeding rack 5 is also provided on the processing table 1, and a feeding cavity 51 is opened on the surface of the feeding rack 5 along its height direction, and the feeding cavity 51 is located directly above the processing space 11; the profiles 6 to be bent are inserted into the feeding cavity 51 in sequence along the height direction of the feeding cavity 51, and the height of the processing space 11 satisfies that only a single profile 6 can be inserted in the processing space 11, and when the profile 6 at the bottom of the feeding cavity 51 falls into the processing space 11 under the action of its own weight, it is assumed that the profile bending point of the profile 6 (that is, the center of the bending position of the profile 6) is on the axis of the spindle 31.

[0042] Reference Figure 2 , Figure 4 and Figure 5The mold 12 is detachably connected to a mounting block, and the mounting block and the feed rack 5 are connected to a return spring 123. The mold 12 is slidably connected to the bottom of the feed rack 5 through the return spring 123 and the mounting block 122. A cam 13 and a motor for driving the cam 13 to rotate are provided on the processing table 1. The cam 13 is located on the side of the mold 12 away from the processing space 11, and when the shortest end of the cam 13 is attached to the mold 12, the return spring 123 is not deformed. At this time, the mold 12 is located on the side of the processing space 11. When the cam 13 rotates to its longest end to abut against the mold 12, the mold 12 is pushed by the cam 13 and moves toward the processing space 11, and pushes the profile 6 in the processing space 11, so that the bending point of the profile 6 moves to the periphery of the processing space 11.

[0043] Reference Figure 2 , Figure 4 and Figure 5 The processing table 1 is provided with a lever 14, which is located above the side of the processing space 11 away from the mold 12. The processing table 1 is also provided with a first lifting member 15 and a second sliding member 16; the first lifting member 15 is used to drive the lever 14 to rise and fall, and the second sliding member 16 is used to drive the lever 14 to move in a direction close to and away from the processing space 11; the first lifting member 15 can be a cylinder, and the second sliding member 16 can be a pneumatic slide. When the profile 6 is pushed by the mold 12 and the bending point of the profile 6 moves to the periphery of the processing space 11, the side of the profile 6 facing the mold 12 is located below the lever 14. At this time, the first lifting member 15 drives the lever 14 to move downward, and the lever 14 can move downward and fit the side wall of the profile 6 facing the mold 12. A downwardly inclined slope 17 is provided on the surface of the processing table 1. The slope 17 is located on the moving path of the lever 14 when it moves away from the processing space 11, so that the profile 6 pushed by the lever 14 can be easily discharged from the processing table 1 with the help of the inclined guidance of the slope 17.

[0044] The implementation principle of a special-shaped part stretching and bending machine disclosed in an embodiment of the present application is: the profile 6 to be bent is placed in the feeding chamber 51, and the profile 6 located at the bottom of the feeding chamber 51 falls into the processing space 11. The bending point of the profile is fixed on the axis line of the main shaft 31 through the adsorption part 312, and then the controller 4 drives the clamping rod 21 to move to both sides of the profile 6 according to the width and position of the profile 6, and controls the clamp 2 to clamp the profile 6, and controls the cam 13 to rotate through the controller 4 until the cam 13 pushes the mold 12 to approach and fit the profile 6.

[0045] Then the controller 4 determines the clamping position of the clamp 2 on the profile 6, and then determines the final position of the clamp 2 after the profile 6 is bent according to the clamping position. Then the controller 4 controls the clamp 2 to move from the current clamping position to the final position to achieve the bending of the profile 6; then the adsorption member 312 releases the adsorption of the profile 6, and the mold 12 continues to push the profile 6 under the pushing action of the cam 13, so that the profile bending point of the profile 6 after the bending is pushed to the periphery of the processing space 11 by the mold 12, and finally the profile 6 is pushed away from the processing space 11 by the lever 14, the first lifting member 15 and the second sliding member 16, and then the profile 6 that has been bent is separated from the processing table 1 by the slope of the slope 17, and the material is discharged. After the mold 12 moves and resets in the direction away from the processing space 11, the profile 6 at the bottom of the feeding cavity 51 will fall into the processing space 11, thereby achieving the batch profile 6 bending processing operation.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A stretch bending machine for special-shaped parts, characterized by: The invention comprises a processing table (1), a mold (12) and a clamp (2) arranged on the processing table (1); the side wall of the mold (12) is provided with a curved surface consistent with the bending angle of the special-shaped part; a processing space (11) for inserting a profile (6) is reserved between the clamp (2) and the mold (12); the clamp (2) is used to clamp the profile (6); a driving component (3) is provided on the processing table (1); the driving component (3) is used to drive the clamp (2) to move relative to the processing table (1) so that the curved surface of the mold (12) is completely in contact with the surface of the profile (6).

2. The special-shaped part stretch bending machine according to claim 1, characterized in that: The invention also includes a controller (4), wherein the driving component (3) is controlled by the controller (4), and the controller (4) is used to obtain the clamping position of the clamp (2) on the profile (6), and based on the clamping position, determine the final position of the clamp (2) on the processing table (1) relative to the mold (12) when the curved surface of the mold (12) is completely in contact with the profile (6); the controller (4) is also used to control the driving component (3) to drive the clamp (2) to move to the final position after the final position of the clamp (2) is determined.

3. The special-shaped part stretch bending machine according to claim 2, characterized in that: The driving assembly (3) comprises a main shaft (31), a support plate (32) rotating about the main shaft (31), a slider (33) sliding along the length direction of the support plate (32), a rotating member (34) for driving the support plate (32) to rotate about the main shaft (31), and a first sliding member (35) for driving the slider (33) to slide along the length direction of the support plate (32); the support plates (32) and the clamps (2) are arranged in a one-to-one correspondence, and the clamps (2) are arranged on the slider (33) corresponding to the support plates (32); the center of the bending position of the profile (6) is arranged concentrically with the axis of the main shaft (31).

4. The special-shaped part stretch bending machine according to claim 3, characterized in that: The top of the main shaft (31) passes through the processing table (1) and is located in the processing space (11); a negative pressure port (311) is provided at the top of the main shaft (31); an adsorption component (312) is provided on the processing table (1); the adsorption component (312) is used to extract air at the negative pressure port (311) so that a negative pressure is formed at the negative pressure port (311); and the top wall of the main shaft (31) located at the negative pressure port (311) is used to fit with the surface of the profile (6) in the processing space (11).

5. The special-shaped part stretch bending machine according to claim 1, characterized in that: A feeding rack (5) is provided on the processing table (1), and a feeding cavity (51) for inserting the profile (6) is provided on the feeding rack (5) along its height direction, and the feeding cavity (51) is located directly above the processing space (11), and the feeding cavity (51) is communicated with the processing space (11).

6. The special-shaped part stretch bending machine according to claim 5, characterized in that: The mold (12) is slidably connected to the bottom of the feeding rack (5), and the profile (6) in the processing space (11) is located on the sliding path of the mold (12); the clamp (2) is connected to the processing table (1) in a lifting manner, and the clamp (2) can be lowered to a position flush with the surface of the processing table (1).

7. The special-shaped part stretch bending machine according to claim 6, characterized in that: A cam (13) is rotatably connected to the processing table (1), the cam (13) is located on a side of the mold (12) away from the processing space (11), and the mold (12) is located on a rotation path when the cam (13) rotates. A return spring (123) is provided between the mold (12) and the feed rack (5), the expansion and contraction direction of the return spring (123) is parallel to the sliding direction of the mold (12), and when the return spring (123) is not deformed, the mold (12) is located on one side of the processing space (11).

8. The special-shaped part stretch bending machine according to claim 6, characterized in that: The processing table (1) is provided with a lever (14), a first lifting member (15) for driving the lever (14) to rise and fall, and a second sliding member (16) for driving the lever (14) to slide in a direction close to or away from a processing space (11). The processing table (1) is also provided with a downwardly inclined slope (17), and the slope (17) is located on a sliding path when the lever (14) slides in a direction away from the processing space (11).

9. The special-shaped part stretch bending machine according to claim 1, characterized in that: The mold (12) is detachably connected to the processing table (1).

10. The special-shaped part stretch bending machine according to claim 1, characterized in that: The processing table (1) is provided with a heating element (121) for heating the curved surface of the mold (12).

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