Mechanical and manual integrated flat thin part bending device

Abstract

The utility model discloses a mechanical and manual integrated flat thin piece bending device which comprises a limiting device, a rotating mechanism, an upper die and a lower die. The limiting mechanism comprises a pressing plate, a pin and a screw; the upper die comprises a round-rod-shaped left handle, a middle pressing rod and a right handle; the upper surface of the lower die body is provided with a straight groove for containing a workpiece to be machined, the middle of the lower die body is provided with a semicircular groove perpendicular to the straight groove, and the front surface of the lower die body is provided with a rectangular structure groove penetrating through the body. A pin shaft hole and two threaded holes are formed in the upper surface of the main body; the rotating mechanism comprises a pin shaft and a roller. The device is simple in structure, low in cost, convenient to operate and easy to install and fix. And meanwhile, according to the material attributes of the workpiece to be machined, manual pressing or mechanical cross-linking use can be flexibly selected, the mechanical forming effect is achieved, the machinable range is greatly widened, and the actual use effect is outstanding.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet metal, in particular to a mechanical and manual integrated flat thin piece bender used in bending work of small, flat and thin metal materials. Background Art

[0002] Currently, sheet metal processing involving high-yield-strength metal materials is often accomplished using equipment such as press brakes and stamping machines. However, manual bending is often used due to the inefficiency of mechanical clamping and the high cost of mechanical equipment. However, traditional press brakes also suffer from a limited processing range. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a mechanical and manual integrated flat thin part bender, which is used to solve the problem of difficult clamping when using mechanical equipment to form and bend small, flat and thin metal materials; at the same time, in the manual bending process, when dealing with certain metal materials with large yield strength, it can also be used in conjunction with stamping equipment to realize the bending process.

[0004] In order to achieve the purpose of solving the above technical problems, the utility model adopts the following technical solutions:

[0005] A mechanical and manual integrated flat thin piece bender, comprising a limit device, a rotating mechanism, an upper die and a lower die;

[0006] The limiting device includes a pressing plate, a pin, and a screw; the pressing plate is a rectangular plate, and the pressing plate is arranged above the lower mold;

[0007] A circular through hole and a semicircular through hole are respectively provided at the left and right positions of the rectangular plate. The circular through hole is used to pass a screw, and the semicircular through hole is used to pass a screw and open and close the plate. The two screws pass through the circular through hole and the semicircular through hole respectively and are screwed into the two threaded holes on the upper surface of the lower mold to fix the pressing plate on the lower mold.

[0008] The upper mold is an integrated structure, including a round rod-shaped left handle, a middle pressure rod, and a right handle; the middle pressure rod is located between the left handle and the right handle, and the diameter of the middle pressure rod is smaller than the diameters of the left and right handles;

[0009] The lower mold includes a rectangular lower mold body, the upper surface of which is provided with a straight groove running through the front and back directions for placing the workpiece to be processed; the front surface of the lower mold body is provided with a rectangular structural groove running through the body; a semicircular groove perpendicular to the straight groove is provided in the middle part of the upper surface of the lower mold body; a pin shaft hole is also provided below the upper surface of the lower mold body, and the pin shaft hole is located at the front side of the semicircular groove; two threaded holes are provided on the upper surface of the lower mold body behind the semicircular groove;

[0010] A pin hole is provided on the straight groove on the rear side of the semicircular groove for inserting a pin and limiting and fixing the workpiece to be processed; the pin is provided in the pin hole;

[0011] The rotating mechanism includes a pin and a roller; the pin is set in the pin hole of the lower mold, and the two ends of the pin are exposed on both sides of the mold respectively; the pin passes through the roller, so that the roller is set in the rectangular structural groove of the lower mold.

[0012] The main function of the rotating mechanism is to solve the problem of scratches caused by friction during the processing. At the same time, as the friction is reduced, the pressure required in the sheet metal process is also reduced. Therefore, the pressure required for bending most thin metal materials can be met by manual pressing.

[0013] Specifically, the semicircular groove is a mold groove, and the workpiece to be processed will be continuously bent during the processing until it fits the surface of the mold groove.

[0014] Specifically, the rectangular structural groove serves to assemble other components while increasing the stability of the mold.

[0015] Specifically, the pin and the roller assembly are designed to be loosely fitted, so that the roller can rotate on the pin.

[0016] Specifically, there is a gap of 0.05-0.1 mm on one side between the pin and the roller assembly.

[0017] Specifically, the pin includes two parts, both of which are cylindrical. The lower part is fixed in the pin hole of the lower mold, and the size of the upper part matches the size of the fixed hole of the workpiece to be processed; so as to achieve the effect of matching different workpieces to be processed.

[0018] Specifically, the position of the pin hole matches the position of the fixing hole of the workpiece to be processed.

[0019] Specifically, the pin is arranged in the pin hole, and the upper surface of the pin is flush with the upper surface of the lower mold.

[0020] Specifically, the width of the straight groove matches the width of the workpiece to be processed. In this way, the two side walls of the straight groove limit the displacement in the left and right directions by tightly fitting with the workpiece to be processed.

[0021] Specifically, the depth of the straight groove matches the thickness of the workpiece to be processed.

[0022] The pin and roller assembly feature a loose fit, with a clearance of 0.05-0.1mm between each side, allowing the rollers to rotate on the pin. During machining, the rollers conform to the workpiece and rotate on the pin as the workpiece bends, achieving direct sliding contact with the workpiece. This significantly reduces friction between the workpiece and the mold surface during deformation, lowering the bending pressure and minimizing the risk of scratches on the workpiece surface during bending.

[0023] The pin is cylindrical in structure, with the lower half of the pin being a uniform size of 3mm, tightly wedged into the pin hole of the lower die. The upper half is designed with different diameters to accommodate different workpieces to be processed. In actual use, pins of matching sizes are selected and wedged into the lower die according to the different sizes of the fixing holes on the workpiece to be processed. Pins of different sizes can be interchanged to achieve the purpose of processing a variety of workpieces to be processed and improving interchangeability.

[0024] The main function of the lower mold is to carry the limiting device and the rotating mechanism. At the same time, a mold groove is set as a space for the workpiece to deform during bending. The upper mold can be replaced according to the yield strength of the workpiece material. When the yield strength of the material is high and a press is required to assist in pressing, the upper mold can be replaced with a mold that can be used in conjunction with the press.

[0025] This patented, integrated mechanical and manual flat-sheet bender features a pressure plate, pins, screws, and a straight slot in the lower mold for position limiting. The pins are positioned within the pin holes, with their upper surfaces flush with those of the lower mold. The pins can be replaced with pins of varying diameters depending on the size of the workpiece's fixing holes. By tightly fitting the workpiece's fixing holes, they limit forward and backward movement. The side walls of the lower mold's straight slot also tightly fit the workpiece, limiting left and right movement.

[0026] At the same time, the workpiece to be processed is restricted in displacement in both vertical directions by the pressure plate and the upper surface of the straight groove of the lower mold, and the two side walls of the straight groove of the lower mold restrict displacement in both left and right directions by tightly fitting with the workpiece to be processed.

[0027] The method of using this patented product is:

[0028] During use, the various components of the integrated mechanical and manual flat thin parts bender are installed in the designated positions as required. The pin is inserted into the pin hole on one side of the lower mold. After the pin is halfway inserted, the roller is inserted into the pin and continues to be inserted until it emerges from the pin hole on the other side of the mold. The pin is inserted into the pin hole of the lower mold until the pin height is flush with the upper end surface of the lower mold. The fixing hole of the workpiece to be processed is pressed into the pin of the lower mold, and the workpiece to be processed is installed in the straight groove of the lower mold. The pressure plate is fixed to the lower mold with two screws, and the screws in the circular through-hole position of the pressure plate are screwed into the threaded holes of the lower mold. With the screws in the circular through-hole position as the center, the pressure plate is rotated until the pressure plate rotates above the workpiece to be processed. Another screw is screwed through the semicircular through-hole of the pressure plate into the lower mold to complete the installation.

[0029] The assembled mechanical and manual integrated flat thin part bender is placed flat on the work surface. The workpiece to be processed is placed in the straight slot of the lower mold. The pressure plate and the straight slot of the lower mold restrict the workpiece's displacement in four horizontal directions and two vertical directions, a total of six directions. When the screws on the pressure plate are tightened, they cooperate with the bottom surface of the straight slot to lock the vertical displacement of the workpiece to be processed. The left and right surfaces of the straight slot tightly fit the workpiece to lock the left and right displacement. The pins tightly fit the workpiece holes to lock the front and back displacement.

[0030] Place the upper mold above the semicircular groove of the lower mold, press the workpiece to be processed vertically downward into the semicircular groove, and continuously apply pressure to the workpiece to be processed through the upper mold. The workpiece to be processed is deformed until it fits completely into the semicircular groove cavity of the lower mold; after the bending is completed, loosen the screws on the semicircular through-hole side of the pressure plate, and rotate the pressure plate until the workpiece can be removed.

[0031] By adopting the above technical solution, the utility model has the following beneficial effects: the patented integrated mechanical and manual flat thin parts bender has a simple structure, low cost, easy operation, and easy installation and fixation; at the same time, according to the material properties of the workpiece to be processed, manual pressing or mechanical cross-linking can be flexibly selected to achieve a mechanical forming effect, which greatly improves the processable range and has outstanding actual use effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the working principle of a mechanical and manual integrated flat thin parts bender in this patent.

[0033] Figure 2 It is a structural diagram of the lower mold.

[0034] Figure 3 It is a structural diagram of the pressure plate.

[0035] Figure 4 It is a structural diagram of the workpiece before processing.

[0036] Figure 5 It is a schematic diagram of the structure of the workpiece after processing.

[0037] Figure 6 It is a structural diagram of the roller.

[0038] In the figure: 1-upper mold, 2-lower mold, 3-pin, 4-pressing plate, 5-pin, 6-roller, 7-workpiece to be processed, 8-pin hole, 9-threaded hole; 10-straight groove, 11-semicircular groove, 12-rectangular structure groove, 13-semicircular through hole, 14-circular through hole, 15 pin hole. DETAILED DESCRIPTION

[0039] The following further explains this patent with reference to the accompanying drawings. However, the scope of protection of this patent is not limited to specific implementation methods.

[0040] As shown in the figure, the utility model of this patent is a mechanical and manual integrated flat thin part bender, which is used for bending small, flat and thin metal materials, including a limiting device, a rotating mechanism, an upper mold 1, and a lower mold 2.

[0041] Among them, the limiting device includes a pressing plate 4, a pin 5, and a screw; the pressing plate 4 is a rectangular plate, and the pressing plate 4 is arranged on the position above the lower mold 2; a circular through hole 14 and a semicircular through hole 13 are respectively provided at the left and right positions of the rectangular plate, the circular through hole 14 is used to pass the screw, and the semicircular through hole 13 is used to pass the screw and open and close the fixation; the two screws pass through the circular through hole 14 and the semicircular through hole 13 respectively and are screwed into the two threaded holes 9 on the upper surface of the lower mold 2 respectively to fix the pressing plate 4 on the lower mold 2.

[0042] The upper mold 1 is an integrated structure, including a round rod-shaped left handle, a middle pressure rod, and a right handle; the middle pressure rod is located between the left and right handles, and the diameter of the middle pressure rod is smaller than that of the left and right handles.

[0043] The lower mold 2 includes a rectangular lower mold body, and the upper surface of the lower mold body is provided with a straight groove 10 running through the front and back directions for placing the workpiece 7 to be processed; the front surface of the lower mold body is provided with a rectangular structural groove 12 running through the body; a semicircular groove 11 perpendicular to the straight groove 10 is provided in the middle part of the upper surface of the lower mold body; a pin shaft hole 8 is also provided below the upper surface of the lower mold body, and the pin shaft hole 8 is located in front of the semicircular groove 11; two threaded holes 9 are provided on the upper surface of the lower mold body behind the semicircular groove 11.

[0044] A pin hole 15 is provided on the straight groove 10 at the rear side of the semicircular groove 11 for inserting a pin 5 and limiting and fixing the workpiece to be processed.

[0045] The rotating mechanism includes a pin 3 and a roller 6; the pin 3 is set in the pin hole 8 of the lower mold 2, and both ends of the pin 3 are exposed on both sides of the mold; the pin 3 passes through the roller 6, so that the roller 6 is set in the structural groove of the lower mold 2.

[0046] During use, insert the pin 3 into the pin hole 8 of the lower mold 2. After it is halfway inserted, insert the roller 6 into the pin 3 and continue to insert the pin 3 until it is exposed from the other side of the mold 2; insert the pin 5 into the pin hole 15 of the lower mold 2 until the height of the pin 5 is flush with the upper end surface of the lower mold 2; fix the pressing plate 4 on the lower mold 2 through the pin 5 to complete the installation.

[0047] Taking the bending of a 60mm x 20mm x 2mm wire clamp as an example, the assembled mechanical and manual integrated flat thin workpiece bender is first placed flat on the work surface. The workpiece 7 is placed into the semicircular groove 11 of the lower mold 2, with one end resting on the roller 6 and the other end secured with the pin 5. The pressure plate 4 is rotated to the position where the pin 5 is fixed, and the two screws are tightened. Continuous pressure is applied to the workpiece 7 through the upper mold 1, causing it to deform until it fits completely into the semicircular groove 11. Once the bend is complete, the screws are unscrewed from the semicircular through-hole 13 to remove the workpiece.

[0048] The integrated mechanical and manual flat thin parts bending machine has low production costs, low operating difficulty, low environmental requirements, and can complete a wide range of processing. At the same time, it has a cross-linking method with the machine to expand the processing range. In actual work, it performs stably, reliably, and has outstanding results.

Claims

1. A mechanical and manual integrated flat thin parts bender, characterized by: It includes a limiting device, a rotating mechanism, an upper mold (1) and a lower mold (2); The limiting device includes a pressing plate (4), a pin (5), and a screw; the pressing plate (4) is a rectangular plate, and the pressing plate (4) is arranged on the upper surface of the lower mold (2); a circular through hole (14) and a semicircular through hole (13) are respectively arranged on the left and right sides of the rectangular plate, the circular through hole (14) is used to pass the screw, and the semicircular through hole (13) is used to pass the screw and open and close the fixing; the two screws pass through the circular through hole (14) and the semicircular through hole (13) respectively and are screwed into the two threaded holes (9) on the upper surface of the lower mold (2), thereby fixing the pressing plate (4) on the lower mold (2); The upper mold (1) is an integrated structure, comprising a round rod-shaped left handle, a middle pressure rod, and a right handle; the middle pressure rod is located between the left handle and the right handle, and the diameter of the middle pressure rod is smaller than the diameters of the left handle and the right handle; The lower mold (2) comprises a rectangular lower mold body, the upper surface of which is provided with a straight groove (10) extending in the front-to-back direction; a semicircular groove (11) perpendicular to the straight groove (10) is provided in the middle portion of the upper surface of the lower mold body; a pin hole (8) is further provided below the upper surface of the lower mold body, the pin hole (8) being located in front of the semicircular groove (11); and two threaded holes (9) are provided on the upper surface of the lower mold body behind the semicircular groove (11); A pin hole (15) is provided on the straight groove (10) at the rear side of the semicircular groove; the pin (5) is provided in the pin hole (15); The rotating mechanism comprises a pin (3) and a roller (6); the pin (3) is arranged in a pin hole (8) of the lower mold (2), and both ends of the pin (3) are exposed on both sides of the mold; the pin (3) passes through the roller (6), so that the roller (6) is arranged in a rectangular structural groove (12) of the lower mold (2).

2. The integrated mechanical and manual flat thin workpiece bender according to claim 1, characterized in that: The semicircular groove (11) is a mold groove.

3. The integrated mechanical and manual flat thin workpiece bender according to claim 1, characterized in that: The pin shaft (3) and the roller (6) group are designed to be loosely fitted, so that the roller (6) can rotate on the pin shaft (3).

4. The integrated mechanical and manual flat thin workpiece bender according to claim 1, characterized in that: The pin (5) comprises an upper and a lower part, both of which are cylindrical in structure. The lower part is fixed in the pin hole (15) of the lower mold, and the size of the upper part matches the size of the fixing hole of the workpiece (7) to be processed.

5. The integrated mechanical and manual flat thin workpiece bender according to claim 1, characterized in that: The position of the pin hole (15) matches the position of the fixing hole of the workpiece (7) to be processed.

6. The integrated mechanical and manual flat thin workpiece bender according to claim 1, characterized in that: The upper surface of the pin (5) is flush with the upper surface of the lower mold (2).

7. The integrated mechanical and manual flat thin workpiece bender according to claim 1, characterized in that: The width of the straight groove (10) matches the width of the workpiece (7) to be processed.

8. The integrated mechanical and manual flat thin workpiece bender according to claim 1, characterized in that: The depth of the straight groove (10) matches the thickness of the workpiece (7) to be processed.

9. The integrated mechanical and manual flat thin workpiece bender according to claim 1, characterized in that: The front surface of the lower mold body is provided with a rectangular structural groove (12) that passes through the body.

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