Integrated bending machine for coil bending and corner cutting

Abstract

The invention discloses an integrated bending machine for coil bending and corner cutting. The integrated bending machine comprises a horizontal rectangular base and four guide columns vertically fixed to the top corners of the base in parallel. The guide columns are sleeved with a lower pressing plate through linear bearings, and a bending die assembly is arranged between the lower pressing plate and the base. A cylindrical spiral spring and a corner cutting bending knife are arranged between the middle template and the bending base, and the bending base is provided with a matched hollow part; the lower die unit comprises a lower cutter fixing seat with a groove and a guide pillar hole and a fixing block with a coil limiting concave block, and the middle die plate is provided with a shoulder guide pillar for alignment. A power cylinder is arranged at the center of an upper fixing plate at the top end of the guide post; leveling support assemblies are arranged at top corners of the base; by means of reasonable arrangement, the problems that traditional coil machining corner cutting and bending integrated procedures are separated, efficiency is low, and positioning precision is poor can be solved, and integrated high-precision machining is achieved. Integrated machining improves efficiency, positioning is accurate, precision is guaranteed, stability is good, and the device is suitable for coil batch machining.

Description

Technical Field

[0001] This invention relates to the field of metal sheet processing equipment, and in particular to an integrated bending machine for bending and cutting the corners of coils. Background Technology

[0002] In the production of metal products, it is often necessary to cut corners and bend the parts to be processed (such as plates and profiles).

[0003] In traditional processing methods, corner cutting and bending are usually completed by two independent machines, requiring manual transfer of workpieces. The workpiece clamping force is uncontrollable, which can easily lead to workpiece displacement during processing and affect accuracy. The mold fitting clearance is fixed, which cannot be adapted to workpieces of different thicknesses and has poor versatility. There are problems such as low processing efficiency, large positioning error and high labor costs.

[0004] Therefore, there is an urgent need to invent an integrated bending machine that can simultaneously cut the corners of the coil and bend it. Summary of the Invention

[0005] Therefore, it is necessary to provide an integrated bending machine for bending and cutting the corners of coils to address the above problems.

[0006] An integrated bending machine for bending and cutting corners of coils includes a base and four guide pillars. The base is a rectangular plate and horizontally arranged. The four guide pillars are vertically and parallel to each other and fixed at the four apex corners of the base. The machine also includes a lower pressure plate and a bending die assembly. The lower pressure plate is slidably mounted on the four guide pillars via linear bearings. The bending die assembly is disposed between the lower pressure plate and the base, and includes an upper die unit connected to the lower pressure plate and a lower die unit connected and fixed to the base.

[0007] The upper mold unit includes an upper template, a middle template, a bending base, an elastic element, and a corner-cutting bending blade. The upper template is fixedly connected to the middle template. The elastic element and the corner-cutting bending blade are both fixedly installed between the middle template and the bending base. The bending base has a hollowed-out portion that matches the corner-cutting bending blade.

[0008] In one embodiment, the elastic element is a plurality of cylindrical helical springs, which are evenly distributed between the middle template and the bending base, and the two ends of each spring are fixed to the lower surface of the middle template and the upper surface of the bending base, respectively.

[0009] In one embodiment, the lower mold unit includes a lower cutter fixing seat and a coil fixing block. The lower cutter fixing seat is horizontally fixed to the upper surface of the base. The coil fixing block is installed on one side of the lower cutter fixing seat. The lower cutter fixing seat has a groove that matches the corner-cutting bending cutter, and has shouldered guide post mounting holes on both sides. The coil fixing block has multiple coil limiting recesses.

[0010] In one embodiment, the system further includes an upper fixing plate and a power cylinder. The upper fixing plate is mounted on one end of the four guide pillars away from the base plate. The power cylinder is vertically fixed to the center of the upper surface of the upper fixing plate, and its piston rod extends downward and is fixedly connected to the lower pressure plate.

[0011] In one embodiment, a vacuum pressure valve is also provided on one side of the upper fixing plate.

[0012] In one embodiment, the lower surface of the middle template is further provided with shouldered guide posts on both sides that match the mounting holes of the shouldered guide posts.

[0013] In one embodiment, the system further includes a leveling support assembly comprising four leveling support feet, each located at one of the four apex corners of the lower surface of the base. Each leveling support foot includes an adjusting screw threaded to the base and a support pad rotatably connected to the lower end of the screw via a bearing. The bottom surface of the support pad is a flat surface with a diamond-shaped anti-slip texture.

[0014] The aforementioned integrated bending machine for coil bending and corner cutting integrates pressing, corner cutting, and bending processes into one integrated process by setting up bending die components and elastic elements. This eliminates the need for manual workpiece transfer and significantly improves processing efficiency. The elastic element (spring) provides buffering pressing force to prevent workpiece deformation and ensures stable operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the bending die assembly structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the mold unit structure of the present invention;

[0018] Figure 4 This is a schematic diagram of the mold unit structure of the present invention;

[0019] Figure 5 This is a schematic diagram of the corner-cutting bending knife and upper mold unit structure of the present invention;

[0020] Figure 6 This is a schematic diagram of the flat support component structure of the present invention.

[0021] 1. Base; 2. Guide post; 3. Lower pressure plate; 4. Bending die assembly; 41. Upper die unit; 411. Upper template; 412. Middle template; 413. Bending base; 414. Elastic element; 4141. Cylindrical helical spring; 415. Corner-cutting bending knife; 416. Hollowed-out part; 42. Lower die unit; 421. Lower knife fixing seat; 422. Coil fixing block; 423. Groove; 424. Shoulder guide post mounting hole; 425. Coil limiting recess; 5. Upper fixing plate; 6. Power cylinder; 7. Vacuum air pressure valve; 8. Shoulder guide post; 9. Flat support assembly; 91. Leveling support foot; 92. Adjusting screw; 93. Support foot pad; 10. Coil. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described in detail below. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] As used herein, the terms “prepared from” and “comprising” are synonymous. The terms “comprising,” “including,” “having,” “containing,” or any other variations thereof, as used herein, are intended to cover non-exclusive inclusion. For example, a composition, step, method, article, or apparatus that includes the listed elements is not necessarily limited to those elements, but may include other elements not expressly listed or elements inherent to such composition, step, method, article, or apparatus.

[0024] When a quantity, concentration, or other value or parameter is expressed as a range, a preferred range, or a range defined by a series of upper and lower preferred values, this should be understood as specifically disclosing all ranges formed by any pair of any upper or preferred value with any lower or preferred value, regardless of whether the range is disclosed individually. For example, when the range “1 to 5” is disclosed, the described range should be interpreted as including the ranges “1 to 4”, “1 to 3”, “1 to 2”, “1 to 2 and 4 to 5”, “1 to 3 and 5”, etc. When numerical ranges are described herein, unless otherwise stated, the range is intended to include its endpoints and all integers and fractions within that range.

[0025] Furthermore, the indefinite articles “a” and “an” preceding the elements or components of this invention do not impose any limitation on the quantity requirement (i.e., the number of times) of the elements or components. Therefore, “an” or “a” should be interpreted as including one or at least one, and the singular form of an element or component also includes the plural form, unless the quantity clearly refers to the singular form.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] See Figures 1-6 An integrated bending machine for bending and cutting corners of coils includes a base 1 and four guide pillars 2. The base 1 is a rectangular plate and horizontally arranged. The four guide pillars 2 are vertically and parallel to each other and fixed at the four top corners of the base 1. The machine also includes a lower pressure plate 3 and a bending die assembly 4. The lower pressure plate 3 is slidably sleeved on the four guide pillars 2 via linear bearings. The bending die assembly 4 is disposed between the lower pressure plate 3 and the base 1, and includes an upper die unit 41 connected to the lower pressure plate 3 and a lower die unit 42 connected and fixed to the base 1.

[0028] The upper mold unit 41 includes an upper template 411, a middle template 412, a bending base 413, an elastic element 414, and a corner-cutting bending blade 415. The upper template 411 is fixedly connected to the middle template 412. The elastic element 414 and the corner-cutting bending blade 415 are both fixedly installed between the middle template 412 and the bending base 413. The bending base 413 has a hollow portion 416 that matches the corner-cutting bending blade 415. By setting up the upper mold unit 41 and the lower mold unit 42, the two cooperate to complete the integrated corner-cutting and bending process of the coil 10. The lower pressure plate 3 is slidably sleeved on the four guide pillars 2 through linear bearings and can rise and fall along the axial direction of the guide pillars 2.

[0029] Furthermore, the elastic element 414 comprises multiple cylindrical helical springs 4141, which are evenly distributed between the intermediate template 412 and the bending base 413, with each spring's two ends fixed to the lower surface of the intermediate template 412 and the upper surface of the bending base 413, respectively. By providing the cylindrical helical springs 4141, the bending base 413 can possess elastic floating freedom relative to the intermediate template 412.

[0030] Furthermore, the lower mold unit 42 includes a lower blade fixing seat 421 and a coil fixing block 422. The lower blade fixing seat 421 is horizontally fixed to the upper surface of the base 1. The coil fixing block 422 is installed on one side of the lower blade fixing seat 421. The lower blade fixing seat 421 has a groove 423 that matches the corner-cutting and bending blade 415, and has shouldered guide post mounting holes 424 on both sides. The coil fixing block 422 has multiple coil limiting recesses 425. By setting a lower mold unit 42 that matches the upper mold, the coil 10 can be fixed while the corner-cutting and bending blade 415 performs corner-cutting and bending processing on the coil 10.

[0031] Furthermore, it also includes an upper fixing plate 5 and a power cylinder 6. The upper fixing plate 5 is installed at the end of the four guide pillars 2 away from the base plate. The power cylinder 6 is vertically fixed to the center of the upper surface of the upper fixing plate 5, and its piston rod extends downward and is fixedly connected to the lower pressure plate 3. By setting the power cylinder 6, the lower pressure plate 3 can be driven to perform the "pressing, cutting, and bending" processes in conjunction with the cylindrical helical spring 4141.

[0032] Furthermore, a vacuum pressure valve 7 is also provided on one side of the upper fixing plate 5.

[0033] Furthermore, the lower surface of the middle template 412 is provided with shouldered guide posts 8 on both sides, which match the shouldered guide post mounting holes 424.

[0034] Furthermore, it also includes a leveling support assembly 9, which contains four leveling support feet 91, respectively located at the four apex corners of the lower surface of the base 1. Each leveling support foot 91 includes an adjusting screw 92 threadedly connected to the base 1, and a support pad 93 rotatably connected to the lower end of the screw via a bearing. The bottom surface of the support pad 93 is a flat surface with a diamond-shaped anti-slip texture. By setting support assemblies at the four corners of the bending machine, the support span can be maximized, the anti-tipping capacity can be improved, and the tilting or tipping of the equipment due to concentrated or offset support points can be avoided. The load can be evenly distributed, protecting the ground and the base 1, and preventing the ground (such as laboratory floor tiles or workshop cement floors) from cracking or sinking due to excessive local pressure. At the same time, it also reduces local stress concentration on the lower surface of the base 1, extending the service life of the base 1.

[0035] The operation process of this invention:

[0036] Visually inspect the condition of each core component of the bending machine: Confirm that the four guide pillars 2 are free from deformation and scratches, and that the linear bearings fit smoothly with the guide pillars 2. Check that the upper die unit 41 (upper template 411, middle template 412, bending base 413, and corner-cutting bending blade 415) is securely connected, that the cutting edge of the corner-cutting bending blade 415 is free from chipping or wear, and that the hollow part 416 of the bending base 413 is free from debris blockage. Confirm that the lower die unit 42 (lower blade fixing seat 421 and coil fixing block 422) is installed flat, that the groove 423 of the lower blade fixing seat 421 is precisely aligned with the corner-cutting bending blade 415, and that the coil limiting recess 425 of the coil fixing block 422 is free from deformation and oil stains. Inspect the elastic element 414 (cylindrical helical spring 4141): Observe that the spring is free from rust, breakage, or permanent deformation, and ensure that the springs are evenly distributed between the middle template 412 and the bending base 413 (each spring is securely fixed at both ends without loosening). Place the coil 10 to be used into the coil limiting recess 425.

[0037] The operator then presses the "Start" button on the control panel. Compressed air enters the rodless chamber of the power cylinder 6, and the piston rod extends downward, driving the lower pressure plate 3 to descend vertically along the four guide pillars 2.

[0038] The lower pressure plate 3 drives the upper mold unit 41 to descend synchronously: when the lower surface of the bending base 413 contacts the upper surface of the coil 10, the bending base 413 stops descending; the lower pressure plate 3 continues to descend, compressing the cylindrical helical spring 4141 between the intermediate template 412 and the bending base 413. The elastic force generated by the spring is transmitted to the coil 10 through the bending base 413, pressing the coil 10 tightly into the limiting groove 423 of the coil fixing block 422 (the pressing force is indirectly controlled by the vacuum pressure valve 7 to ensure that the coil 10 is not deformed but not loose, and the pressure feedback value can be observed in real time through the control panel).

[0039] As the lower pressure plate 3 continues to descend (the cylindrical helical spring 4141 is further compressed), the corner-cutting bending blade 415 passes through the hollow part 416 of the bending base 413 and moves towards the groove 423 of the lower blade fixing seat 421. The corner-cutting bending blade 415 and the groove 423 of the lower blade fixing seat 421 form a shearing engagement, and the coil 10 is cut at the preset corner position by using shearing force. The debris generated by the corner cutting falls naturally through the chip discharge port of the groove 423 of the lower blade fixing seat 421 (to avoid the accumulation of debris affecting subsequent bending).

[0040] During the corner cutting process, the shouldered guide post 8 is simultaneously inserted into the mounting hole of the lower blade fixing seat 421 to play a guiding role, ensuring that the corner cutting bending blade 415 and the groove 423 are always accurately aligned, and the corner cutting angle error is ≤±1°.

[0041] Bending process execution

[0042] After the corner cutting is completed, the lower pressure plate 3 continues to descend along the guide post 2. The corner cutting and bending knife 415 further cooperates with the lower mold unit 42 after the corner cutting is completed: the bending part of the corner cutting and bending knife 415 presses the end of the coil 10 after corner cutting into the bending groove of the lower knife fixing seat 421. Through the preset bending groove arc (which is adapted to the bending radius of the coil 10), the end of the coil 10 forms the required bending angle.

[0043] During the bending process, the elastic element 414 (cylindrical helical spring 4141) continuously provides buffering force to prevent the coil 10 from deforming or breaking due to excessive local force; at the same time, the piston rod of the power cylinder 6 ensures uniform bending speed through stable air pressure output (to prevent the coil 10 from rebounding due to excessive speed, which would affect the stability of the bending angle).

[0044] After the bending process is completed, the pneumatic reversing valve reverses, and compressed air enters the rod chamber of the power cylinder 6. The piston rod retracts upward, causing the lower pressure plate 3 to rise vertically along the guide post 2. The upper mold unit 41 rises synchronously, the corner-cutting bending blade 415 disengages from the groove 423 of the lower blade fixing seat 421, and the spring between the middle template 412 and the bending base 413 gradually returns to its natural state, separating the bending base 413 from the coil 10. After the lower pressure plate 3 rises to the initial position (triggering the stroke limit switch, confirming that the upper mold unit 41 is completely disengaged from the lower mold unit 42), subsequent operations are performed, and finally, the coil 10 is removed.

[0045] The aforementioned integrated bending machine for coil bending and corner cutting, by setting up bending die assembly 4 and elastic element 414, can achieve integrated processing of pressing, corner cutting and bending into one process, eliminating the need for manual workpiece transfer and greatly improving processing efficiency. The elastic element 414 provides buffering pressing force to avoid workpiece deformation and ensure stable operation.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An integrated bending machine for bending and cutting corners of a coil, comprising a base and four guide columns, the base being rectangular plate-shaped and horizontally arranged, the four guide columns being vertically and mutually parallel fixed on four top corners of the base, characterized in that, The lower pressing plate is sleeved on the four guide columns through a linear bearing, and a bending die assembly is arranged between the lower pressing plate and the base. The upper die unit includes an upper die plate, a middle die plate, a bending base, an elastic member and a corner bending cutter.

2. An integrated bending machine for bending and cutting corners of wire coils according to claim 1, characterized in that, The elastic member is a plurality of cylindrical coil springs, which are evenly distributed between the middle die plate and the bending base, and the two ends of each spring are fixed to the lower surface of the middle die plate and the upper surface of the bending base.

3. An integrated bender for bending and cutting corners of wire coils according to claim 2, characterized in that, The lower die unit includes a lower cutter fixing base and a coil fixing block.

4. An integrated bender for bending and cutting corners of wire coils according to claim 1, characterized in that, The upper fixed plate is installed at the end of the four guide columns away from the base plate, and a power cylinder is vertically fixed at the center of the upper surface of the upper fixed plate.

5. An integrated bender for bending and cutting corners of wire coils according to claim 4, characterized in that, The side of the upper fixed plate is also provided with a vacuum pressure regulating valve.

6. An integrated bender for bending and cutting corners of wire coils according to claim 3, characterized in that, The lower surface of the middle die plate is also provided with a shoulder guide pillar matched with the shoulder guide pillar mounting hole.

7. An integrated bending machine for bending and cutting corners of wire coils according to any one of claims 1 to 6, characterized in that, The leveling support assembly includes four leveling support feet arranged at the four corners of the lower surface of the base. Each leveling support foot includes an adjusting screw threadedly connected to the base and a support foot pad rotatably connected to the lower end of the screw through a bearing.

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