Bending and positioning device for metal frame of balcony cabinet

Abstract

The utility model discloses a bending and positioning device for a metal frame of a balcony cabinet, and the metal frame of the balcony cabinet is a U-shaped frame. Comprising a supporting mechanism, a stand column fixedly connected to the upper end of the supporting mechanism, a sleeve block arranged on the peripheral wall of the stand column in a sleeving mode, a lifting mechanism arranged on the side wall of the supporting mechanism and used for lifting the sleeve block, a supporting frame fixedly connected to the side wall of the sleeve block, a bending mechanism arranged on the supporting frame and two fixing blocks arranged on the sleeve block. Each fixing block is provided with an abutting mechanism and two clamping mechanisms. The abutting mechanism and the two clamping mechanisms are jointly provided with a U-shaped frame, the output ends of the two clamping mechanisms are arranged oppositely and correspond to the two sides of the U-shaped frame respectively, and the output end of the abutting mechanism corresponds to the non-concave end face of the U-shaped frame. The bending mechanism is located between the two fixing blocks. The bending device has the advantages of being high in bending precision, good in symmetry and efficient in operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal plate stamping forming technical field, concretely is a balcony cabinet metal frame bending positioning device. BACKGROUND

[0002] The metal frame of the balcony cabinet usually adopts a long strip U-shaped cross-section profile, and part of the section needs to be bent at a specific angle to adapt to the installation of the cabinet body structure or other connecting pieces.

[0003] At present, the bending processing of such an open frame generally adopts the traditional process method of sectioning and single-side bending. In operation, the profile is usually placed on a general bending equipment, clamped and fixed from one side or the bottom by a clamp, and then a bending die is driven to stamp and bend one side of the profile. However, for the U-shaped frame, due to its open cross-section and relatively dispersed rigidity, the traditional single-point or single-side clamping method often cannot provide stable and uniform clamping force, and the workpiece is prone to sliding or local warping during the bending stress process, resulting in a decrease in bending precision. Secondly, when the two opposite sides of the U-shaped frame need to be symmetrically or oppositely bent, the existing method can only operate the two sides independently, which not only has low processing efficiency, but also because the stress points and references of the two bending processes are difficult to be completely consistent, it is easy to cause the two sides to be asymmetrically bent and the bending positions to be different, which seriously affects the overall structural consistency and assembly precision of the frame and increases the time cost of subsequent correction or rework. SUMMARY

[0004] The utility model aims at providing a balcony cabinet metal frame bending positioning device, which has the advantages of high bending precision, good symmetry and efficient operation, and solves the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A balcony cabinet metal frame bending positioning device, the balcony cabinet metal frame is a U-shaped frame, which comprises a supporting mechanism, a stand column fixed to the upper end of the supporting mechanism, a sleeve block sleeved on the peripheral wall of the stand column, a lifting mechanism arranged on the side wall of the supporting mechanism for lifting the sleeve block, a supporting frame fixed to the side wall of the sleeve block, a bending mechanism arranged on the supporting frame, and two fixing blocks arranged on the sleeve block, each fixing block is provided with a abutting mechanism and two clamping mechanisms;

[0007] The U-shaped frame is arranged on the abutting mechanism and the two clamping mechanisms, the output ends of the two clamping mechanisms are oppositely arranged, and the output ends of the two clamping mechanisms correspond to the two opposite sides of the U-shaped frame respectively, and the output end of the abutting mechanism corresponds to the non-recessed end face of the U-shaped frame;

[0008] The bending mechanism is located between the two fixing blocks.

[0009] Preferably, the supporting mechanism comprises a base and a supporting block fixed to the upper end of the base, and the upper end of the supporting block is fixed to the lower end of the column.

[0010] It is worth noting that the base provides a wide bottom contact surface, effectively enhancing the stability of the device as a whole, preventing tilting or displacement due to stress during bending operation, and the supporting block serves as a direct carrier of the column, uniformly transmitting the load of the column to the base, ensuring the rigidity of the main supporting structure, and providing a solid and reliable foundation platform for subsequent positioning and bending operation.

[0011] Preferably, the lifting mechanism comprises a first cylinder fixed to the side wall of the supporting mechanism and a lifting block fixed to the upper end of the output shaft of the first cylinder, and the side wall of the lifting block and the side wall of the sleeve block are fixed to each other.

[0012] It is worth noting that the first cylinder drives the lifting block, which in turn drives the sleeve block and all components mounted thereon to move vertically along the column, allowing the bending height position of the workpiece (U-shaped frame) to be flexibly and quickly adjusted according to processing requirements, greatly improving the adaptability and versatility of the device.

[0013] Preferably, the abutting mechanism comprises a first sliding table cylinder fixed to the side wall of the fixed block and a first clamping plate fixed to the moving end of the first sliding table cylinder, and the first clamping plate and the end of the U-shaped frame close to each other are in close contact.

[0014] It is worth noting that the abutting mechanism drives the first clamping plate to move linearly through the first sliding table cylinder, which can exert a stable pressing force on the end face of the U-shaped frame. This design allows the U-shaped frame to be firmly abutted against the predetermined reference surface before bending, effectively limiting the axial displacement of the workpiece in the bending direction.

[0015] Preferably, the clamping mechanism comprises a second sliding table cylinder fixed to the fixed block, and the second clamping plate is fixed to the end of the second sliding table cylinder close to the U-shaped frame.

[0016] It is worth noting that the two clamping mechanisms achieve synchronous and opposite clamping of the two side walls of the U-shaped frame, and this design can generate balanced clamping force to firmly fix the workpiece between the two fixed blocks, effectively preventing the workpiece from being laterally offset, twisted or warped during bending.

[0017] Preferably, the bending mechanism comprises a first U-shaped frame fixed to the upper end of the support frame, two second air cylinders fixed to the inner walls of the two sides of the first U-shaped frame, a first stamping block fixed to the output shaft of the second air cylinder, a center block fixed to the first U-shaped frame near one end of the U-shaped frame, and a first pressing block fixed to the center block near one end of the U-shaped frame, the end of the first pressing block near the U-shaped frame abuts the flat surface of the recess of the U-shaped frame, and there is a gap between the two side surfaces of the first pressing block and the two side surfaces of the inner wall of the U-shaped frame.

[0018] Notably, the first pressing block is pre-pressed against the flat surface of the recess of the U-shaped frame, determining the inner reference surface of the bending, and the two second air cylinders drive the first stamping block to simultaneously stamp and bend the two side walls of the U-shaped frame, with concentrated and symmetrical force, and the gap between the first pressing block and the inner wall of the frame provides the necessary space for the flow and deformation of the material during the bending process, avoiding interference and jamming.

[0019] Preferably, the bending mechanism comprises a groove opened at the upper end of the support frame, a first rotating arm rotatably installed on the inner wall of the groove, two ear plates fixed to the side walls of the first rotating arm, a second rotating arm rotatably installed on the two ear plates, a first insertion hole opened through the upper end of the second rotating arm, a second insertion hole opened through the upper end of the first rotating arm, an insertion rod inserted into the inner walls of the first and second insertion holes, a fixed column fixed to the upper end of the insertion rod, a second pressing block fixed to the first insertion hole near one end of the U-shaped frame, a second U-shaped frame fixed to the upper end of the support frame, third air cylinders fixed to the inner walls of the two sides of the second U-shaped frame, and a second stamping block fixed to the output shaft of the third air cylinder, the output shafts of the two third air cylinders are directed towards the two side surfaces of the U-shaped frame, and the end of the second pressing block near the U-shaped frame is in close contact with the flat surface of the recess of the U-shaped frame.

[0020] Notably, the second pressing block is fixed to the second rotating arm and directly abuts the inner flat surface of the recess of the U-shaped frame, providing a clear and stable inner reference surface for bending, and when the two third air cylinders synchronously drive the second stamping block to apply force to the side walls of the frame, the second pressing block acts as a rigid fulcrum, effectively resisting the bending force and preventing the inner side of the workpiece from being concave or unstable when under stress, thereby ensuring the accurate position of the bending line and the stable and consistent bending angle; in addition, the mechanism forms a support unit with good integrity through the linkage of the first rotating arm, the second rotating arm, and the insertion rod; the insertion rod simultaneously penetrates the first and second insertion holes and is pressed and positioned by the fixed column, so that the second pressing block and the second rotating arm in which it is located maintain a high structural rigidity in the working state, avoiding reference drift caused by component loosening or deformation; at the same time, the bending mechanism is easy to operate and maintain, and the pre-fitted second pressing block can intuitively determine the inner reference of the bending when the workpiece is installed, the positioning steps are simple and convenient to use.

[0021] Preferably, the outer diameter of the fixing column is larger than the outer diameter of the inserting rod, and a gap is formed between the two side faces of the second pressing block and the two side faces of the inner wall of the U-shaped frame.

[0022] It is worth noting that the outer diameter of the fixing column is larger than the outer diameter of the inserting rod, on the one hand, facilitating manual operation of the inserting rod, and on the other hand, after the inserting rod is inserted, the lower surface of the fixing column can serve as a limiting block and press against the surface of the first rotating arm or the second rotating arm, thereby increasing the stability of the inserting rod when bearing lateral force and preventing it from being accidentally loosened during work. The gap between the second pressing block and the two side faces of the inner wall of the U-shaped frame is also designed to avoid interference with material deformation during bending, ensuring smooth bending action and allowing the pressing block to accurately determine the position of the inner bending line, thereby ensuring the accurate shaping of the bending angle.

[0023] Compared with the prior art, the utility model has the beneficial effects as follows:

[0024] 1. By setting the fixing block comprising two side clamping mechanisms and an end abutting mechanism, the U-shaped frame is subjected to multi-point constraint before bending, and the two clamping mechanisms act synchronously to clamp the frame side wall from both sides, and the abutting mechanism applies a pressing force from the end face, thereby forming a stable three-dimensional clamping. This clamping method effectively overcomes the shortcomings of open U-shaped frame cross section and dispersed rigidity, prevents the workpiece from sliding, twisting or local warping when subjected to bending stress, and provides a reliable positioning reference for high-precision bending.

[0025] 2. By setting the bending mechanism between the two fixing blocks and allowing the actuator to act on the two side edges of the U-shaped frame, synchronous and opposite bending of the two side edges of the frame is realized. This structure ensures that double-sided bending can be completed in one process, significantly improving the processing efficiency, and more importantly, ensuring that the force application points, bending angles and bending line positions of the two bending processes are completely symmetrical and consistent, solving the asymmetry and eccentricity problems caused by traditional multiple bending, and greatly improving the overall structural precision and assembly consistency of the frame.

[0026] 3. By setting the sleeve block that can be lifted along the column and the driving mechanism, the height of the entire workpiece clamping and bending unit can be adjusted to adapt to different specifications of workpieces or different bending positions. At the same time, the pressing block in the bending mechanism that is in contact with the inner side plane of the frame provides an accurate inner side forming reference for bending, and the gap reserved between the side edge of the pressing block and the inner wall of the frame avoids interference during bending, ensuring smooth bending action and accurate shaping angle. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 The utility model discloses a three-dimensional structure schematic view of the utility model is shown.

[0028] Figure 2 The utility model discloses a three-dimensional structure schematic view of the abutting mechanism of the utility model is shown.

[0029] Figure 3 The diagram shown is a three-dimensional structural schematic of the clamping mechanism of this utility model.

[0030] Figure 4 The diagram shown is a three-dimensional structural schematic of the support mechanism of this utility model.

[0031] Figure 5 The diagram shown is a three-dimensional structural schematic of the lifting mechanism of this utility model.

[0032] Figure 6 The diagram shown is a three-dimensional structural schematic of the first embodiment of the bending mechanism of this utility model;

[0033] Figure 7 The diagram shown is a three-dimensional structural schematic of a second embodiment of the bending mechanism of this utility model;

[0034] Figure 8 The diagram shown is a three-dimensional disassembled structural schematic of the second embodiment of the bending mechanism of this utility model.

[0035] Reference numerals: 1. Support mechanism; 101. Base; 102. Support block; 2. Column; 3. Sleeve block; 301. First cylinder; 302. Lifting block; 4. Support frame; 5. Bending mechanism; 501. First U-shaped frame; 502. Second cylinder; 503. First stamping block; 504. Center block; 505. First pressing block; 506. Groove; 507. First rotating arm; 508. Ear plate; 509. Second rotating arm; 510. First insertion hole; 511. Insert rod; 512. Fixed column; 513. Second pressing block; 514. Second insertion hole; 515. Second U-shaped frame; 516. Third cylinder; 517. Second stamping block; 6. Fixed block; 601. First slide cylinder; 602. First clamping plate; 603. Second slide cylinder; 604. Second clamping plate; 7. U-shaped frame. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] To address the problems of unstable clamping during U-shaped frame bending, difficulty in guaranteeing symmetrical bending accuracy, and low processing efficiency in existing technologies, the following technical solution is proposed. Please refer to [link / reference needed]. Figures 1-8 ;

[0038] The utility model provides a balcony cabinet metal frame bending positioning device, balcony cabinet metal frame is U frame 7, including support mechanism 1, the vertical column 2 of fixed connection in support mechanism 1 upper end, the sleeve block 3 of setting in the outer circumferential wall of vertical column 2, set up in the lateral wall of support mechanism 1 for the lifting mechanism of sleeve block 3 lifting, the support frame 4 of fixed connection in the lateral wall of sleeve block 3, set up in the bending mechanism 5 of support frame 4 and the two fixed blocks 6 of setting in sleeve block 3, every fixed block 6 is equipped with the abutting mechanism and two clamping mechanisms,

[0039] The abutting mechanism and the two clamping mechanisms are provided with a U-shaped frame 7, the output ends of the two clamping mechanisms are opposite, and the output ends of the two clamping mechanisms correspond to the two sides of the U-shaped frame 7 respectively, the output end of the abutting mechanism corresponds to the non-recessed end face of the U-shaped frame 7.

[0040] The bending mechanism 5 is located between the two fixed blocks 6.

[0041] In use, the two sides of the U-shaped frame 7 are fixed by extrusion using the two clamping mechanisms, then the non-recessed end face of the U-shaped frame 7 is abutted using the abutting mechanism, then the two sides of the U-shaped frame 7 are recessed using the bending mechanism 5, and during the whole process, the height of the sleeve block 3 can be adjusted by opening the lifting mechanism, so that the height of the abutting mechanism, the bending mechanism 5 and the clamping mechanism can be quickly adjusted, and the place of the U-shaped frame 7 that needs to be bent can be quickly bent.

[0042] In the embodiment, specifically, the support mechanism 1 includes a base 101 and a support block 102 fixedly connected to the upper end of the base 101, and the upper end of the support block 102 is fixedly connected to the lower end of the vertical column 2.

[0043] In the embodiment, specifically, the lifting mechanism includes a first air cylinder 301 fixedly connected to the lateral wall of the support mechanism 1 and a lifting block 302 fixedly connected to the upper end of the output shaft of the first air cylinder 301, and the lateral wall of the lifting block 302 and the lateral wall of the sleeve block 3 are fixedly connected to each other.

[0044] In the embodiment, specifically, the abutting mechanism includes a first sliding table air cylinder 601 fixedly connected to the lateral wall of the fixed block 6 and a first clamping plate 602 fixedly connected to the moving end of the first sliding table air cylinder 601, and the first clamping plate 602 and the end of the U-shaped frame 7 close to each other are attached to each other.

[0045] In the embodiment, specifically, the clamping mechanism includes a second sliding table air cylinder 603 fixedly connected to the fixed block 6, and a second clamping plate 604 is fixedly connected to the end of the second sliding table air cylinder 603 close to the U-shaped frame 7.

[0046] In this embodiment, specifically, the bending mechanism 5 comprises a first U-shaped frame 501 fixed to the upper end of the support frame 4, two second air cylinders 502 fixed to the inner walls on both sides of the first U-shaped frame 501, a first stamping block 503 fixed to the output shaft of the second air cylinder 502, a center block 504 fixed to the first U-shaped frame 501 near one end of the U-shaped frame 7, and a first pressing block 505 fixed to the center block 504 near one end of the U-shaped frame 7. The end of the first pressing block 505 near the U-shaped frame 7 abuts against the flat surface in the recess of the U-shaped frame 7, and there is a gap between the two side surfaces of the first pressing block 505 and the inner walls on both sides of the U-shaped frame 7.

[0047] The bending mechanism 5 has a compact structure, the first pressing block 505 provides an accurate and stable inner forming reference surface for bending, effectively resists the bending force, and prevents the deformation of the inner recess of the workpiece; the two second air cylinders 502 can synchronously drive the first stamping block 503 to perform opposite stamping on the two side walls of the U-shaped frame 7, realize symmetrical bending in a single action, and ensure the consistency of the bending angle and position; and the gap reserved between the first pressing block 505 and the inner walls of the frame provides space for the plastic flow of the material during the bending process, avoids interference, and can ensure smooth bending action and accurate forming.

[0048] In this embodiment, specifically, the bending mechanism 5 comprises a first U-shaped frame 501 fixed to the upper end of the support frame 4, two second air cylinders 502 fixed to the inner walls on both sides of the first U-shaped frame 501, a first stamping block 503 fixed to the output shaft of the second air cylinder 502, a center block 504 fixed to the first U-shaped frame 501 near one end of the U-shaped frame 7, and a first pressing block 505 fixed to the center block 504 near one end of the U-shaped frame 7. The end of the first pressing block 505 near the U-shaped frame 7 abuts against the flat surface in the recess of the U-shaped frame 7, and there is a gap between the two side surfaces of the first pressing block 505 and the inner walls on both sides of the U-shaped frame 7.

[0049] The bending mechanism 5 is formed by the first rotating arm 507 and the second rotating arm 509 which are rotatable, so that the second pressing block 513 can be moved away when the workpiece is loaded or unloaded, the operation space is large, and the use is convenient; after the second pressing block 513 is attached to the workpiece and locked by inserting the inserting rod 511, the whole reference unit forms a rigid whole, which provides stable support for bending; the two third cylinders 516 on the second U-shaped frame 515 drive the second stamping block 517 to bend symmetrically, and the processing efficiency and symmetry are high; the overall design takes into account the operation convenience and the rigidity requirement of the working state.

[0050] In the embodiment, specifically, the outer diameter of the fixed column 512 is larger than the outer diameter of the inserting rod 511, and there is a gap between the two side surfaces of the second pressing block 513 and the two side surfaces of the inner wall of the U-shaped frame 7. The design that the outer diameter of the fixed column 512 is larger than the outer diameter of the inserting rod 511 makes the lower end surface of the fixed column 512 be able to be pressed against the surface of the first rotating arm 507 or the second rotating arm 509 after the inserting rod 511 is inserted, thereby playing an axial limiting role, preventing the inserting rod 511 from being accidentally loosened during the bending stress process, and enhancing the locking reliability; the gap between the two sides of the second pressing block 513 and the inner wall of the workpiece also ensures that there is no interference during bending, and at the same time ensures that the second pressing block 513 can accurately position the inner bending line.

[0051] Working principle: when in use, the operator places the U-shaped frame 7 to be processed between the two fixed blocks 6, and makes one end thereof roughly aligned with the first clamping plate 602 in the abutting mechanism, starts the two clamping mechanisms, and the second slide cylinder 603 on the two fixed blocks 6 acts synchronously to drive the second clamping plate 604 connected thereto to move towards each other, thereby firmly clamping the two side walls of the U-shaped frame 7 from both sides;

[0052] Subsequently, the abutting mechanism is started, the first slide cylinder 601 drives the first clamping plate 602 to move forward and tightly abuts against the end surface of the U-shaped frame 7 which is not recessed, thereby forming a stable constraint on the workpiece in three directions together with the second clamping plate 604 on both sides, effectively preventing displacement and deformation during bending;

[0053] According to the position of the required bending area on the U-shaped frame 7, the lifting mechanism can be adjusted, the first cylinder 301 drives the lifting block 302 to move up and down along the stand 2, thereby driving the sleeve block 3, the support frame 4, the fixed block 6 and all the components mounted thereon to move up and down as a whole, so that the bending mechanism 5 is accurately aligned with the preset bending line;

[0054] In the bending process, the first pressing block 505 is abutted on the inner side plane of the recess of the U-shaped frame 7 as a forming reference, the second cylinders 502 on both sides of the first U-shaped frame 501 synchronously drive the first pressing block 503 to apply opposite pressing forces to the two side walls of the U-shaped frame 7, and the two side walls are synchronously plastically bent at the same position and at the same angle under the support of the first pressing block 505, and the symmetrical bending is completed;

[0055] If the bending mechanism 5 in the embodiment 2 is used, the second rotating arm 509 is rotated to the working position first, the second pressing block 513 is abutted on the inner side plane of the U-shaped frame 7, then the inserting rod 511 is inserted into the first inserting hole 510 and the second inserting hole 514 to lock the relative position of the first rotating arm 507 and the second rotating arm 509, the fixing column 512 is pressed on the surface to ensure the connection rigidity, then the third cylinders 516 on both sides of the second U-shaped frame 515 synchronously drive the second pressing block 517 to perform the synchronous bending action;

[0056] After the bending is completed, each execution element is reset, the clamping mechanism and the abutting mechanism are loosened, and the processed U-shaped frame 7 can be taken out, and a working cycle is completed.

[0057] It should be noted that, in the present text, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0058] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application.

Claims

1. A balcony cabinet metal frame bending positioning device, the balcony cabinet metal frame is a U-shaped frame (7), characterized in that: The utility model provides a kind of supporting mechanism, column (2) being fixed to the upper end of supporting mechanism (1), sleeve block (3) being set to the outer wall of column (2), lifting mechanism being arranged on the side wall of supporting mechanism (1) for lifting sleeve block (3), support frame (4) being fixed to the side wall of sleeve block (3), bending mechanism (5) being arranged on support frame (4) and two fixed blocks (6) being arranged on sleeve block (3), each fixed block (6) is equipped with abutting mechanism and two clamping mechanisms. U-shaped frame (7) is arranged on abutting mechanism and two clamping mechanisms, the output end of two clamping mechanisms is opposite, and the output end of two clamping mechanisms corresponds to the two sides of U-shaped frame (7) respectively, the output end of abutting mechanism corresponds to the non-recessed end face of U-shaped frame (7). Bending mechanism (5) is located between two fixed blocks (6).

2. The bending and positioning device for balcony cabinet metal frame according to claim 1, characterized in that: Supporting mechanism (1) includes base (101) and support block (102) being fixed to the upper end of base (101), and the upper end of support block (102) is fixed to the lower end of column (2).

3. The bending and positioning device for balcony cabinet metal frame according to claim 1, characterized in that: Lifting mechanism includes first air cylinder (301) being fixed to the side wall of supporting mechanism (1) and lifting block (302) being fixed to the upper end of the output shaft of first air cylinder (301), and the side wall of lifting block (302) is fixed to the side wall of sleeve block (3).

4. The bending and positioning device for balcony cabinet metal frame according to claim 1, characterized in that: Abutting mechanism includes first sliding table air cylinder (601) being fixed to the side wall of fixed block (6) and first clamping plate (602) being fixed to the moving end of first sliding table air cylinder (601), and the end of first clamping plate (602) close to U-shaped frame (7) is attached to each other.

5. The bending and positioning device for balcony cabinet metal frame according to claim 1, characterized in that: Clamping mechanism includes second sliding table air cylinder (603) being fixed to fixed block (6), and the end of second sliding table air cylinder (603) close to U-shaped frame (7) is fixed with second clamping plate (604).

6. The bending and positioning device for balcony cabinet metal frame according to claim 3, characterized in that: Bending mechanism (5) includes first U-shaped frame (501) being fixed to the upper end of support frame (4), second air cylinder (502) being fixed to the inner wall of both sides of first U-shaped frame (501), first stamping block (503) being fixed to the output shaft of second air cylinder (502), center block (504) being fixed to the end of first U-shaped frame (501) close to U-shaped frame (7) and first pressing block (505) being fixed to the end of center block (504) close to U-shaped frame (7), and the end of first pressing block (505) close to U-shaped frame (7) is abutted on the plane of recessed portion of U-shaped frame (7), and there is gap between the two side faces of first pressing block (505) and the inner wall of U-shaped frame (7).

7. The bending and positioning device for balcony cabinet metal frame according to claim 1, characterized in that: The bending mechanism (5) comprises a groove (506) formed in the upper end of the support frame (4), a first rotating arm (507) rotatably installed on the inner wall of the groove (506), two ear plates (508) fixedly connected to the side wall of the first rotating arm (507), a second rotating arm (509) rotatably installed on the two ear plates (508), a first insertion hole (510) formed in the upper end of the second rotating arm (509), a second insertion hole (514) formed in the upper end of the first rotating arm (507), an insertion rod (511) inserted into the inner wall of the first insertion hole (510) and the second insertion hole (514), a fixed column (512) fixedly connected to the upper end of the insertion rod (511), a second pressing block (513) fixedly connected to the first insertion hole (510) close to one end of the U-shaped frame (7), a second U-shaped frame (515) fixedly connected to the upper end of the support frame (4), a third cylinder (516) fixedly connected to the inner wall of the two sides of the second U-shaped frame (515), and a second stamping block (517) fixedly connected to the output shaft of the third cylinder (516), the output shafts of the two third cylinders (516) are both directed to the two side surfaces of the U-shaped frame (7), and the second pressing block (513) close to one end of the U-shaped frame (7) is in contact with the plane of the recessed part of the U-shaped frame (7).

8. The bending and positioning device for balcony cabinet metal frame according to claim 7, characterized in that: The outer diameter of the fixed column (512) is greater than the outer diameter of the insertion rod (511), and there is a gap between the two side surfaces of the second pressing block (513) and the two side surfaces of the inner wall of the U-shaped frame (7).

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