Prism space angle bending device and bending method

Abstract

The application provides a prismatic space angle bending device and a bending method, which comprise a supporting assembly, a rotating bending assembly, a limiting assembly and a locking assembly. The rotating bending assembly comprises first and second wheel shaft assemblies arranged in parallel, and the outer wall of the guide wheel of the wheel shaft assembly is provided with a ring groove for wrapping a prismatic part to be bent. The supporting assembly is provided with a through groove in the same direction as the bending direction of the prismatic part. During processing, the prismatic part is vertically fixed in the through groove and located between the two wheel shaft assemblies, and the prismatic part is bent by rotating the handle to drive the wheel shaft assembly. The limiting assembly is arranged on one side of the rotating bending assembly and cooperates with the locking assembly on the rotating bending assembly to lock and fix the rotating bending assembly. By increasing the number of the through grooves on the supporting assembly and the ring grooves on the wheel shaft assembly, multi-station bending processing can be realized. By changing the slotting direction, the distance between the limiting assembly and the rotating bending assembly and the shape of the ring grooves on the wheel shaft assembly, the bending processing of prismatic parts of different specifications can be realized, and the bending device has high versatility.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of bending, and particularly relates to a prismatic space angle bending device and a bending method. BACKGROUND

[0002] As Figures 33-34 A handle part in a weapon product, the unfolded shape of the curved part is a prism. When the part is processed, the unfolded shape before bending is first processed, and then the prism part of the unfolded shape is bent into shape at a certain space angle. The existing prismatic bending method is: the part to be bent is locally heated by high frequency, and then clamped on a vice, and the operator strikes the part to be bent along the bending direction with a hammer several times to bend it into shape. This method is complicated in operation steps, time-consuming in heating, and the striking along the bending direction is based on visual observation and experience, resulting in large bending angle and size processing error of the prismatic part, poor consistency, low production efficiency, and unsuitable for mass production. SUMMARY

[0003] In order to solve the problems of poor operability, large processing error and low production efficiency of the existing prismatic part bending method, the present application provides a prismatic space angle bending device and a bending method.

[0004] The technical scheme of the present application is: a prismatic space angle bending device, comprising a supporting assembly and a rotating bending assembly.

[0005] The supporting assembly comprises a bottom plate, a positioning assembly and supporting ears 2 symmetrically arranged on both sides of the positioning assembly, and the prismatic part to be bent is vertically fixed on the positioning assembly; the positioning assembly and the supporting ears are fixed on the bottom plate.

[0006] The rotating bending assembly comprises a first wheel shaft combination, a second wheel shaft combination, a rotating frame 9 and a handle 10; the rotating frame 9 is provided with a space accommodating the first wheel shaft combination and the second wheel shaft combination, the open end is connected with the supporting ear 2 through the first wheel shaft combination, the other end is fixedly connected with the handle 10, and the rotating frame 9 can rotate around the shaft under the action of the handle; the second wheel shaft combination is installed in the middle of the rotating frame and is parallel to the first wheel shaft combination; the outer walls of the first wheel shaft combination and the second wheel shaft combination are provided with ring grooves capable of wrapping and guiding the bending of the prismatic part.

[0007] Further, the positioning assembly comprises a positioning seat 3 and a positioning shaft 6.

[0008] The top of the positioning seat is provided with a protrusion, a through groove is opened in the protrusion, the direction of the through groove is the same as the bending direction of the prismatic part, positioning holes are arranged on the groove wall and along the direction perpendicular to the groove opening direction, the distance from the axis of the positioning hole to the axis of the first wheel shaft combination is equal to the distance from the hole axis of the end of the prismatic part to the bending start position of the prismatic part; the prismatic part with the hole is vertically installed in the groove and is fixed through the positioning shaft 6.

[0009] Further, the limiting assembly is installed on the bottom plate and located at one side of the rotating and bending assembly, and can limit the rotating position of the rotating and bending assembly.

[0010] The limiting assembly comprises a limiting plate 15, a positioning screw 16 and a fine adjustment nut 17. The limiting plate 15 is vertically fixed on the bottom plate, and a first through hole and a second through hole are vertically arranged on the top of the limiting plate 15. The first through hole is perpendicular to the rotating frame, and the positioning screw 16 is installed in the first through hole. The fine adjustment nuts 17 are installed on the positioning screw and located at both ends of the through hole.

[0011] Further, the locking assembly comprises a bolt seat 20, a bolt 21 and a lever 22.

[0012] The bolt seat 20 is fixed on the side wall of the rotating frame 9 and close to one side of the limiting assembly. The bolt seat 20 is provided with a mounting hole and a sliding groove. The bolt 21 is installed in the mounting hole.

[0013] The lever 22 is vertically installed on one end of the bolt 21. The bolt 21 can slide axially along the sliding groove under the pushing of the lever 22, and lock / unlock the limiting assembly.

[0014] When locked, the bolt extends into the second through hole of the limiting assembly.

[0015] Further, the first axle assembly comprises a first shaft 11 and a lower guide wheel 13. The lower guide wheel 13 is sleeved on the first shaft 11.

[0016] The second axle assembly comprises a second shaft 7 and an upper guide wheel 8. The upper guide wheel 8 is sleeved on the second shaft 7.

[0017] The outer wall of the upper guide wheel 8 and the lower guide wheel 13 is provided with a V-shaped ring groove, and the axis lines coincide.

[0018] One end of the first shaft 11 and the second shaft 7 is provided with a limiting boss, and the other end is provided with an annular clamping groove.

[0019] Further, the V-shaped ring groove on the outer wall of the upper guide wheel 8 and the lower guide wheel 13 is determined according to the prism outer wall profile design.

[0020] Further, a plane is arranged on one side of the outer wall of the lower guide wheel 13 along the axial direction.

[0021] Further, a U-shaped cavity is arranged in the middle of the rotating frame 9, one end is open, and the other end is closed. A screw hole is arranged in the middle of the closed end of the rotating frame for connecting the handle 10. Symmetrical through holes are arranged on the side walls of the rotating frame close to the open end position, for installing the first axle assembly with a small gap. A U-shaped groove is symmetrically arranged in the middle of the side wall, which is perpendicular to the direction in which the U-shaped cavity is arranged, for installing the second axle assembly.

[0022] Further, it is characterized in that all parts are made of steel.

[0023] The method for bending the prismatic part by using the prismatic space angle bending device comprises the following steps:

[0024] Step 1, fixing the bending device on the workbench;

[0025] Step 2, installing the prismatic part to be bent:

[0026] Substep 2.1, lifting the handle 10 upward to drive the rotating frame 9 to rotate around the shaft to rise and stop at the highest position;

[0027] Substep 2.2, vertically installing the prismatic part with a hole into the through slot on the protrusion of the positioning seat 3, and inserting the small end of the positioning shaft 6 into the installation hole on the protrusion of the positioning seat 3 and the hole of the prismatic part, at this time, the prismatic surface of the prismatic part is attached to the V-shaped ring groove of the first shaft combination;

[0028] Step 3, bending the prismatic part:

[0029] Substep 3.1, pushing the handle 10 reversely to drive the rotating frame 9 to rotate downward around the shaft to the horizontal position;

[0030] Substep 3.2, installing the second shaft combination in the installation slot in the middle of the rotating frame 9; at this time, the prismatic part to be bent is located between the first shaft combination and the second shaft combination and is wrapped by the ring groove;

[0031] Substep 3.3, pushing the handle 10 to move to drive the rotating frame 9, the first shaft combination and the second shaft combination to rotate, and the prismatic part is bent under the wrapping and guiding of the ring groove on the first shaft combination and the second shaft combination;

[0032] Step 4, disassembling the bent prismatic part:

[0033] Substep 4.1, pushing the handle 10 reversely to drive the rotating frame 9 to rotate downward around the shaft to the horizontal position, and taking out the second shaft combination;

[0034] Substep 4.2, pushing the handle 10 to move to drive the rotating frame 9 and the first shaft combination to rotate to the highest position, pulling out the positioning shaft 6, and taking out the bent prismatic part.

[0035] Beneficial effects

[0036] 1. The present application limits the deflection direction of the prism when bending by providing a slot on the positioning seat of the positioning assembly, which is the same as the bending direction of the prism, and the height position of the positioning hole at the slot limits the bending position of the length direction of the prism, and the V-shaped groove of the outer wall of the upper and lower guide wheels and its rotating direction limit the bending direction of the prism; the upper end of the limiting assembly limits the rotation stop angle of the rotating frame when bending. The positioning assembly, the rotating bending assembly and the limiting assembly work together to ensure the accuracy of the bending position and angle of the prism to be bent.

[0037] 2. When processed by the original method, it takes an average of 20 minutes to complete the bending of a prism part, and the processing size error is large and the consistency is poor; using the device of the present application, it takes an average of only 30 seconds to complete the bending of the same prism part, and the bending precision is high and the processing size consistency is good.

[0038] 3. When the prism part to be bent has no hole at one end, a process extension can be made, a hole is made at the extension for positioning, and the process extension is cut off after bending is completed.

[0039] 4. In the present application, the number of slots on the positioning seat can be increased, and the number of V-shaped grooves at the upper and lower guide wheels can be increased, to realize multi-station bending processing and greatly improve production efficiency.

[0040] 5. By changing the slot direction of the positioning seat of the present application, adjusting the extension position and size of the upper end of the limiting plate, and designing the shape of the V-shaped groove of the roller according to the angle of the outer wall surface of the prism, the bending processing of prism parts of different specifications, sizes and bending angles can be realized, and the versatility is strong.

[0041] Additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 is a perspective view of the prism space angle bending device of the present application;

[0043] Figure 2 is Figure 1 a top view of

[0044] Figure 3 is Figure 1 a right view of

[0045] Figure 4 is a wheel shaft combination and prism cooperation schematic diagram;

[0046] Figure 5 is Figure 4 a right view of

[0047] Figure 6 is Figure 4Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0048] Figure 7 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0049] Figure 8 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0050] Figure 9 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0051] Figure 10 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0052] Figure 11 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0053] Figure 12 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0054] Figure 13 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0055] Figure 14 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0056] Figure 15 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0057] Figure 16 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0058] Figure 17 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0059] Figure 18 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0060] Figure 19 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0061] Figure 20 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0062] Figure 21 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0063] Figure 22 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0064] Figure 23 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0065] Figure 24 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0066] Figure 25 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0067] Figure 26 Figure 1 is a perspective view of the upper guide wheel assembly being removed;

[0068] Figure 27 is a micro-adjustment nut schematic diagram;

[0069] Figure 28 is a thin nut schematic diagram;

[0070] Figure 29 is a spring washer schematic diagram;

[0071] Figure 30 is a bolt seat schematic diagram;

[0072] Figure 31 is a bolt schematic diagram;

[0073] Figure 32 is a lever schematic diagram;

[0074] Figure 33 is a handle part schematic diagram;

[0075] Figure 34 is a handle part schematic diagram before bending;

[0076] Figure 35 is a schematic diagram of a double-station design structure using the present application scheme;

[0077] Figure 36 is a schematic diagram of a double-station design structure using the present application scheme; Figure 35 is a schematic diagram of a double-station design structure using the present application scheme;

[0078] Figure 37 is a schematic diagram of a double-station design structure using the present application scheme; Figure 35 is a schematic diagram of a double-station design structure using the present application scheme;

[0079] Figure 38 is a schematic diagram of a double-station design structure using the present application scheme; Figure 35 is a schematic diagram of a double-station design structure using the present application scheme; Figure 33 is a schematic diagram of a double-station design structure using the present application scheme.

[0080] In the figure, 1 is a bottom plate, 2 is a supporting lug, 3 is a positioning seat, 4 is a screw, 5 is a conical pin, 6 is a positioning shaft, 7 is a second shaft, 8 is an upper guide wheel, 9 is a rotating frame, 10 is a handle, 11 is a first shaft, 12 is an elastic retainer, 13 is a lower guide wheel, 14 is a handle part, 15 is a limiting plate, 16 is a positioning screw, 17 is a micro-adjustment nut, 18 is a thin nut, 19 is a spring washer, 20 is a bolt seat, 21 is a bolt, and 22 is a lever. DETAILED DESCRIPTION

[0081] The present application scheme is described below by taking the bending of the prismatic surface of the handle part as an example. The embodiment is exemplary and is intended to explain the present application, but cannot be understood as a limitation of the present application.

[0082] Reference Figures 1-38A kind of prismatic space angle bending bending device, including support assembly, rotary bending assembly, limiting assembly and locking assembly.The support assembly includes bottom plate 1, positioning assembly and the support lug 2 of symmetrical arrangement in the positioning assembly both sides, to be bent prismatic vertical fixed on positioning assembly;Positioning assembly and support lug 2 are fixed on bottom plate 1.Positioning assembly includes: positioning seat 3, screw 4, conical pin 5 and positioning shaft 6;Rotary bending assembly includes first shaft 11, lower guide wheel 13, elastic baffle 12, rotary frame 9, handle 10, thin nut 18, elastic washer 19, upper guide wheel assembly, wherein upper guide wheel assembly includes second shaft 7, upper guide wheel 8 and elastic washer 19;Limiting assembly includes limiting plate 15, positioning screw 16 and fine adjustment nut 17;Locking assembly includes bolt seat 20, bolt 21, lever 22.The material of all components in the device is steel.

[0083] Referring to Figure 7 、 Figures 11-16 , the positioning assembly includes positioning seat 3, screw 4, conical pin 5 and positioning shaft 6;Bottom plate 1 is installed on the workbench, two support lugs 2 are symmetrically arranged on the bottom plate 1, the positioning seat 3 is located at the center position between the two support lugs 2, and is fixed by the screw 4 and the cylindrical pin 5. Two support lugs 2 are provided with through holes, and the axis lines coincide. The positioning seat 3 is provided with a protrusion, the protrusion is provided with a strip-shaped slot, the direction of the slot is consistent with the reverse direction of the bending of the prismatic surface to be bent, and is used for guiding the deflection of the prismatic during processing. The protrusion is provided with a positioning hole along the direction perpendicular to the slot direction, and the distance from the axis line of the positioning hole to the axis line of the lower guide wheel 13 is equal to the distance from the axis center of the end hole of the handle part to the start position of the prismatic bending. The stepped small end of the positioning shaft 6 can be inserted into the positioning hole of the positioning seat 3, and the hole end of the handle part to be bent is fixed.

[0084] Referring to Figure 11 , the bottom plate 1 is a square plate structure;U-shaped grooves are arranged at the four corners, which are convenient for being connected to the machine tool workbench surface by bolts and nuts;A plurality of screw and conical pin mounting holes are arranged on the plate surface.

[0085] Referring to Figure 12 , the support lug 2 is L-shaped, and notches are symmetrically arranged at both ends to form protrusions, the protrusions are provided with holes, the holes are matched with the small end of the first shaft 11 as H9 / f7;The end of the protrusion is made into a semicircular arc concentric with the hole, which is beautiful and prevents bumping.

[0086] Referring to Figure 13 , the positioning seat 3 is a rectangular plate, and the protrusion is provided with a rectangular slot, the direction of the slot is consistent with the bending direction of the prismatic surface of the handle part to be bent;A positioning hole is arranged perpendicular to the slot direction, and the hole diameter size is the same as the hole size of one end of the prismatic part 14;When the prismatic part 14 is installed in the slot, the small end of the positioning shaft 6 is inserted into the positioning hole of the positioning seat 3 and the end hole of the handle part 14, so that the deflection angle of the prismatic surface is fixed.

[0087] Referring toFigure 14 The screw 4 is selected from GB / T70.1-2000 cylindrical head internal hex screws.

[0088] Reference Figure 15 The tapered pin 5 is selected from GB / T119.1-2000.

[0089] Reference Figure 16 The positioning shaft is a concentric second-order shaft, and its small end cylindrical surface is fitted with the hole of the protrusion of the positioning seat 3 and the hole of the prism part 14 with a small clearance fit of H11 / h11.

[0090] Reference Figure 1 , Figures 17-24 The rotary bending assembly includes a first wheel axle assembly, a second wheel axle assembly, a rotating frame 9, and a handle 10. The first wheel axle assembly includes a first shaft 11, a lower guide wheel 13, and an elastic retaining ring 12. The lower guide wheel 13 is coaxially mounted on the first shaft 11. The first wheel axle assembly is installed in the mounting hole at the lower end of the rotating frame 9, with both ends located in the through holes of the support lugs 2. The large shaft end of the first shaft 11 has a retaining platform, and the small shaft end of the first shaft has a retaining groove. The elastic retaining ring 12 is installed in the retaining groove to fix the axial position of the first shaft and the parts on the shaft. The second wheel axle assembly is installed in the mounting groove in the middle of the rotating frame 9 and includes a second shaft 7, an upper guide wheel 8, and an elastic washer 19. The upper guide wheel 8 is coaxially mounted on the second shaft 7. The large shaft end of the second shaft 7 has a retaining platform, and the retaining ring 12 is installed in the retaining groove at the small shaft end to restrict the axial position of the second shaft and the parts on the shaft. Both the upper guide wheel 8 and the lower guide wheel 13 have V-shaped grooves circumferentially formed in the middle. The angle of the V-shape is the same as the angle between the V-shape and the outer wall surface of the prism, and the direction of the V-shape is the same as the direction of the outer wall surface of the prism. After installation, the cavity formed by the V-shaped grooves on the upper and lower guide wheels near the prism matches the dimensions of the outer wall surface of the prism, and can cooperate to wrap the prism surface of the handle part 14.

[0091] After installation, they can work together to wrap the prism-shaped surface of the handle part 14 around the V-groove.

[0092] The handle 10 is installed in the top mounting hole of the rotating frame 9 and is secured by the elastic washer 19 and the thin nut 18. Pushing the handle up or down can rotate the rotating frame around the first axis 11. The handle is designed to be long, making it easier to operate when bending.

[0093] Reference Figure 17 The second shaft 7 is a long shaft with an annular boss near one end and an annular groove near the other end for inserting an elastic retaining ring; the annular boss cooperates with the second shaft to limit the axial position of the first shaft and the upper guide wheel 8.

[0094] Reference Figure 18 and Figure 19The upper guide wheel 8 is provided with a central hole along the axis, and the two ends of the hole are provided with counterbores. One end of the counterbores is matched with the convex circular table of the second shaft 7, and the elastic retaining ring 12 installed on the second shaft 7 is located in the counterbores at the other end of the upper guide wheel 8. A V-shaped ring groove is formed in the middle of the outer wall of the upper guide wheel 8 in the circumferential direction, and the V-shaped groove of the upper guide wheel can wrap the prismatic surface.

[0095] With reference to Figure 20 The rotating frame 9 is in the shape of U as a whole, and a U-shaped groove is formed in the middle of the rotating frame 9, so that the upper guide wheel and the lower guide wheel can be conveniently installed and removed. A screw hole is formed in the middle of the closed end of the rotating frame, and the handle 10 is connected to the screw hole. Symmetrical through holes are formed in the side walls of the rotating frame 9 near the opening end, and the first shaft combination is installed in the through holes in a matched manner of H9 / f7 small gap cooperation. U-shaped grooves are symmetrically formed in the middle of the side walls of the rotating frame 9, and the second shaft combination is installed in the U-shaped grooves. The end part of the rotating frame 9 is designed in the shape of a circular arc, so as to avoid structural interference.

[0096] With reference to Figure 21 The handle 10 is in the shape of concentric three-order shaft, and a thread is formed on the small end cylindrical surface, which is matched with the thread on the top of the rotating frame. The large section is in the shape of a tapered long arm, so that the bending shape is labor-saving. The end part is in the shape of an arc, so that the holding feeling is comfortable.

[0097] With reference to Figure 22 The first shaft 11 is in the shape of two-order concentric shaft, and an annular groove is formed on the outer wall of the small section, which is used for installing the elastic retaining ring 12. Planes are symmetrically formed on the large outer wall, so that the wrench can be clamped.

[0098] With reference to Figure 23 The elastic retaining ring 12 is selected according to GB / T894.1-1986.

[0099] With reference to Figure 24 The lower guide wheel 13 is in the shape of a shaft, and a central hole is formed along the axis. A V-shaped groove is formed in the middle of the outer wall of the lower guide wheel 13, which is matched with the V-shaped groove of the upper guide wheel, so that the prismatic surface of the prismatic part can be wrapped and guided to bend. A plane is formed on one side of the outer wall of the lower guide wheel 13 along the axial direction, so that the upper surface of the boss on the positioning seat can be avoided during assembly. The cooperation between the lower guide wheel 13 and the first shaft 11 is in the form of H8 / h7 small gap cooperation, and the cooperation between the first shaft 11 and the through holes on the two side walls of the rotating frame 9 is in the form of H8 / e7 small gap cooperation.

[0100] With reference to Figures 25-27The limiting assembly includes a limiting plate 15, a positioning screw 16 and a fine adjustment nut 17. The bottom of the limiting plate 15 is fixed on the bottom plate 1 by a screw, and the top of the limiting plate extends to the side close to the rotating and bending assembly. A second through hole is formed on the extending end of the top of the limiting plate, and the axis of the second through hole is perpendicular to the plane of the extending end of the top of the limiting plate. A flange is arranged on the top of the limiting plate close to the second through hole, and a first through hole is formed on the flange, and the axis of the first through hole is perpendicular to the axis of the second through hole. After installation, the side of the limiting plate provided with the flange points to the rotating frame 9, and the axis of the first through hole is perpendicular to the rotating frame 9. Spaces are left between the limiting plate and the rotating frame and the positioning assembly, so that the bending operation is facilitated.

[0101] The positioning screw 16 is installed in the first through hole of the top of the limiting plate, and two fine adjustment nuts 17 are arranged on the positioning screw, and are respectively located on the two sides of the flange. The rotating positioning screw and the fine adjustment nuts can adjust the extension amount of the positioning screw, so that the parking position of the rotating frame when rotating upward is changed, and the bending angle of the prism can be finely adjusted.

[0102] The limiting assembly is fixed on the bottom plate and is located on the side of the rotating and bending assembly provided with the locking assembly. When the rotating frame 9 is lifted to the high position and touches the positioning screw 16 of the limiting assembly, the bolt 21 of the bolt assembly can extend into the second through hole of the limiting plate 15 to lock the rotating frame on the limiting plate.

[0103] Referring to Figure 25 The limiting plate 15 is a thin steel plate which is bent. One end of the bottom is bent by 90° so that it can stand on the bottom plate and is fixed by a screw. The top is provided with a second through hole which can be connected with the bolt 21. A flange structure is arranged on the top of the limiting plate close to the second through hole, and a first through hole is formed on the flange for installing the positioning screw 16 and the fine adjustment nut 17.

[0104] Referring to Figure 26 The positioning screw 16 is a three-step concentric shaft, and an inner hexagonal cavity is formed on the large cylindrical end. The middle shaft has a threaded structure on the circumference.

[0105] Referring to Figure 27 The fine adjustment nut 17 is selected from GB / T41-2000.

[0106] Referring to Figure 28 The thin nut 18 is selected from GB / T6172.1-2000.

[0107] Referring to Figure 29 The spring washer 19 is selected from GB93-1987.

[0108] Referring to Figure 10 , Figures 30-32The locking assembly comprises a bolt seat 20, a bolt 21 and a lever 22. The bolt seat 20 is fixed on the top of the installation groove of the rotating frame 9 by screws and is close to one side of the limiting assembly. The bolt seat 20 is provided with three lugs, the installation holes are formed in the lugs at both ends, and the arc-shaped sliding grooves are formed in the lug at the middle. The center axes of the installation holes and the arc-shaped sliding grooves coincide, and the bolt 21 is installed in the installation hole of the bolt seat 20.

[0109] The lever 22 is a concentric second-order shaft, and the small end of the shaft has a threaded structure. The lever 22 is coupled with one end of the bolt 21 through threads. The lever 22 can drive the bolt 21 to move axially along the installation hole and the arc-shaped sliding groove to extend or retract. When the rotating frame 9 is raised to the highest position, the lever 22 is pushed along the axial direction of the bolt 21, which can drive the bolt 21 to extend and be inserted into the installation hole at the top of the limiting plate 15, so that the rotating frame 9 is locked at the highest position, facilitating the assembly and disassembly of the handle parts.

[0110] Referring to Figures 35-38 In the specific implementation, the number of symmetrically arranged slots can be increased on the positioning seat according to the needs, and V-shaped grooves can be added to the upper guide wheel and the lower guide wheel to realize double-station processing and complete the bending of the prismatic parts in opposite directions. In this embodiment, the prismatic bending of the left handle parts and the right handle parts in opposite bending directions can be completed at the same time in one processing, thereby improving the production efficiency.

[0111] When assembling:

[0112] 1. The two lugs 2 and the positioning seat 3 are fixed on the bottom plate 1 in parallel through the screws 5 and the conical pins 6, and the positioning seat 3 is located between the two lugs 2.

[0113] 2. The small end of the first shaft 11 is sequentially inserted into the installation holes of the left lug, the rotating frame 9, the lower guide wheel 13 and the right lug, and is extended from the hole end of the right lug. The elastic retaining ring 12 is installed on the shaft end clamping groove, so that the axial position of the first shaft and the shaft parts is fixed.

[0114] 3. The second shaft 7 is inserted through the center hole of the upper guide wheel 8, and the elastic retaining ring 12 is installed in the shaft end clamping groove. Then, the two ends of the assembled second shaft are installed into the U-shaped clamping grooves at both ends of the rotating frame 9.

[0115] 4. The limiting plate 15 is fixed vertically on the bottom plate 1 by screws, and the limiting plate is located on one side of the opening end of the U-shaped clamping groove of the rotating frame. The positioning screw 16 is installed in the first through hole of the flange of the limiting plate 15, and the positioning screw 16 is provided with two fine adjustment nuts 17, so that the fine adjustment nuts 17 are located on both sides of the flange, respectively. When the rotating frame rotates upward around the first shaft to complete the bending angle, it can be parked at the position of the positioning screw.

[0116] 5. The latch seat 20 is fixed on the side wall of the rotating frame 9 by screw, and is towards the side of the limiting component; the latch 21 is inserted into the hole of the latch seat 20, and then the threaded end of the push rod 22 is screwed into the threaded hole of the latch 21. When the rotating frame 9 rises to the high position and touches the positioning screw 16, the latch 21 is pushed out and inserted into the second through hole on the top of the limiting plate 15 by the push rod 22.

[0117] 6. The positioning shaft 4 is placed beside the positioning seat 3 for use, and the assembly of the whole device is completed.

[0118] When working:

[0119] 1. The curved device is fixed on the workbench by the U-shaped slot on the bottom plate 1 through bolts;

[0120] 2. The handle part to be bent is loaded:

[0121] First, the handle 10 is lifted upward to drive the rotating frame 9 to rise around the first shaft 11 and stop at the position where it touches the positioning screw 16, the push rod 22 is pushed to make the latch 21 inserted into the second through hole of the limiting plate 16, and the rotating frame 9 is locked;

[0122] Then the handle part to be bent 14 with a hole is loaded into the through slot on the protrusion of the positioning seat 3, and the small end of the positioning shaft 6 is inserted into the mounting hole on the protrusion of the positioning seat 3 and the hole of the handle part 14, at this time the prismatic surface of the handle part to be bent 14 is attached to the V-shaped slot of the lower guide wheel 11;

[0123] 3. When bending, the push rod 22 is pushed to make the latch 21 exit the second through hole of the limiting plate 15, and the handle 10 is pushed downward to drive the rotating frame 9 to rotate around the first shaft 11 to the horizontal position;

[0124] Then the two ends of the second shaft 7 are loaded into the U-shaped slots at the two ends of the middle part of the rotating frame 9; at this time the prism is located between the upper guide wheel and the lower guide wheel, and the V-shaped ring slot of the wheel body of the upper guide wheel 8 and the lower guide wheel 11 cooperates to wrap the prismatic surface of the handle part to be bent 14.

[0125] The handle 10 is pushed upward to make the rotating frame 9 and the second shaft combination move clockwise around the first shaft 11, and the prismatic surface of the handle part 14 is bent, when the rotating frame 9 rises and touches the positioning screw 16 of the limiting plate, the prismatic bending processing is completed.

[0126] 4. When the bent handle part is unloaded, the handle 10 is pushed in the reverse direction to make the rotating frame 9 return to the horizontal position, and the second shaft combination is taken out;

[0127] Then the handle 10 is pushed upward to drive the rotating frame 9 to rise to the position of the positioning screw 16, the push rod 22 is pushed to make the latch 21 inserted into the second through hole of the limiting plate 15, and the rotating frame 9 is locked;

[0128] Pull out the positioning shaft 6, take out the finished handle part 14, and the bending process is completed.

[0129] The prism space angle bending device can complete the prism space angle bending process, has simple structure, is convenient to use, is low in cost, and is suitable for single-piece and batch processing of prism part space angle bending.

[0130] Although the embodiments of the present application have been shown and described above, it should be understood by those skilled in the art that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application without departing from the principles and spirits of the present application.

Claims

1. A prismatic space angle bending device, characterized by, The support assembly, the rotating and bending assembly, the positioning assembly and the limiting assembly are included. The support assembly includes a bottom plate, the positioning assembly and the supporting ears (2) symmetrically arranged on both sides of the positioning assembly, and the prismatic part to be bent is vertically fixed on the positioning assembly; the positioning assembly and the supporting ears are fixed on the bottom plate. The rotating and bending assembly includes a first axle combination, a second axle combination, a rotating frame (9) and a handle (10); the rotating frame (9) is provided with a space for accommodating the first axle combination and the second axle combination, the open end is connected with the supporting ear (2) through the first axle combination, the other end is fixedly connected with the handle (10), and the rotating frame (9) can rotate around the shaft under the action of the handle; the second axle combination is installed in the middle of the rotating frame and is parallel to the first axle combination, and the outer walls of the first axle combination and the second axle combination are provided with ring grooves capable of wrapping and guiding the bending of the prismatic part; The middle of the rotating frame (9) is provided with a U-shaped cavity, one end of which is open and the other end is closed, a screw hole is opened in the middle of the closed end for connecting the handle (10); symmetrically, the through holes are arranged on the two side walls of the rotating frame and close to the open end position for installing the first axle combination in a small gap; a U-shaped groove is symmetrically arranged in the middle of the side wall and is perpendicular to the opening direction of the U-shaped cavity for installing the second axle combination; The positioning assembly includes a positioning seat (3) and a positioning shaft (6); the top of the positioning seat is provided with a protrusion, a through groove is opened in the protrusion, the direction of the through groove is the same as the bending direction of the prismatic part, positioning holes are arranged on the groove wall and along the direction perpendicular to the groove, the distance from the axis of the positioning hole to the axis of the first axle combination is equal to the distance from the axis of the hole in the end of the prismatic part to the bending starting position of the prismatic part; the prismatic part with the hole is vertically installed in the groove and is fixed through the positioning shaft (6); The limiting assembly is installed on the bottom plate and located on one side of the rotating and bending assembly, and can limit the rotating position of the rotating and bending assembly; the limiting assembly includes a limiting plate (15), a positioning screw (16) and a fine adjustment nut (17); the limiting plate (15) is vertically fixed on the bottom plate, the top of the limiting plate (15) is provided with a first through hole and a second through hole which are vertically arranged, the positioning screw (16) is installed in the first through hole, and the fine adjustment nut (17) is installed on the positioning screw (16) and located at both ends of the through hole.

2. The prism space angle folding device according to claim 1, wherein The locking assembly includes a bolt seat (20), a bolt (21) and a lever (22); The bolt seat (20) is fixed on the side wall of the rotating frame (9) and close to one side of the limiting assembly, the bolt seat (20) is provided with a mounting hole and a sliding groove, and the bolt (21) is installed in the mounting hole; The lever (22) is vertically installed on one end of the bolt (21), and the bolt (21) can slide axially along the sliding groove under the pushing of the lever (22) to lock / unlock the limiting assembly; When locked, the extending end of the bolt is located in the second through hole of the limiting assembly.

3. The prism space angle folding device according to claim 1, wherein The first axle combination includes a first shaft (11) and a lower guide wheel (13), and the lower guide wheel (13) is sleeved on the first shaft (11); The second axle combination includes a second shaft (7) and an upper guide wheel (8), and the upper guide wheel (8) is sleeved on the second shaft (7); The outer walls of the upper guide wheel (8) and the lower guide wheel (13) are provided with V-shaped ring grooves, and the axes coincide. The first shaft (11) and the second shaft (7) are provided with a limiting boss at one end and an annular clamping slot at the other end.

4. The prism space angle folding device according to claim 3, wherein The V-shaped ring groove on the outer wall of the upper guide wheel (8) and the lower guide wheel (13) is determined according to the prism outer wall profile design.

5. The prism space angle folding device according to claim 4, wherein The lower guide wheel (13) is provided with a plane on one side of the outer wall in the axial direction.

6. A prismatic space angle folding device according to any one of claims 1-5, characterized in that All parts are made of steel.

7. A prismatic space angle bending method, characterized by, The method comprises the following steps: Step 1, fix the bending device on the workbench; Step 2, install the prism part to be bent: Substep 2.1, lift the handle (10) upward to drive the rotating frame (9) to rotate upward and stop at the highest position; Substep 2.2, vertically install the prism part with a hole into the through slot on the protrusion of the positioning seat (3), and insert the small end of the positioning shaft (6) into the mounting hole on the protrusion of the positioning seat (3) and the hole of the prism part, at this time, the prism surface of the prism part is attached to the V-shaped ring groove of the first wheel shaft combination; Step 3, bend the prism part: Substep 3.1, push the handle (10) in the opposite direction to drive the rotating frame (9) to rotate downward to the horizontal position; Substep 3.2, install the second wheel shaft combination in the mounting slot in the middle of the rotating frame (9); at this time, the prism to be bent is located between the first wheel shaft combination and the second wheel shaft combination and is wrapped by the ring groove; Substep 3.3, push the handle (10) to move, drive the rotating frame (9), the first wheel shaft combination and the second wheel shaft combination to rotate, and the prism is bent under the wrapping and guiding of the ring groove on the first wheel shaft combination and the second wheel shaft combination; Step 4, disassemble the bent prism part: Substep 4.1, push the handle (10) in the opposite direction to drive the rotating frame (9) to rotate downward to the horizontal position, and take out the second wheel shaft combination; Substep 4.2, push the handle (10) to move, drive the rotating frame (9) and the first wheel shaft combination to rotate to the highest position, pull out the positioning shaft (6), and take out the bent prism part.

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