CN113523032B

CN113523032B - Asymmetric cutter module and plate bending device

Info

Publication number: CN113523032B
Application number: CN202110802286.5A
Authority: CN
Inventors: 常勇
Original assignee: Guangdong Hongshi Laser Technology Co Ltd
Current assignee: Guangdong Hongshi Laser Technology Co Ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2023-01-13
Anticipated expiration: 2041-07-15
Also published as: CN113523032A

Abstract

The invention discloses an asymmetric cutter module, which comprises: the upper cutter comprises a cutter body and a cutter head arranged at one end of the cutter body, the cutter head comprises two side walls which form an included angle, a cutter point of the cutter head is formed at the joint of the two side walls, and included angles between a perpendicular line of the cutter point which passes through the cutter point and is parallel to the center line of the cutter body along the height direction and the two side walls are different; go up the cutter and include the shaping mould body and set up the shaping groove in the moulded die upper end, the shaping groove includes that two are the shaping lateral wall that the contained angle set up, and the tank bottom in shaping groove is formed in the department of meeting of two shaping lateral walls, crosses tank bottom department and is different with the contained angle mutually of two shaping lateral walls with the parallel tank bottom plumb line of moulded die body along the central line of direction of height. The invention can increase the processing range of the plate and realize the function of partial mechanical supporting plates; the processing is integrated, and the replacement of different and various cutting dies of a special workpiece is reduced; and improves the workability of the processing.

Description

Asymmetric cutter module and plate bending device

Technical Field

The invention belongs to the field of plate processing equipment, and particularly relates to an asymmetric cutter module and a plate bending device.

Background

In the existing plate bending process, a symmetrically designed cutter is generally used for processing, in the process of bending a plate into a U-shaped plate by using a cutter head of the symmetrically designed cutter, a first bending is firstly carried out to form a first side wall of the U-shaped plate, then the plate is bent for the second time to form a second side wall of the U-shaped plate, if the length of the first side wall is greater than or equal to that of a bottom plate between the first side wall and the second side wall, and the angle between the first side wall and the bottom plate is 90 degrees, in the process of bending the plate for the second time, the plate has a springback value, so when the angle between the second side wall and the bottom plate is required to be less than or equal to 90 degrees, an included angle between a center line of the symmetrically designed cutter head and the bottom plate is less than or equal to 45 degrees, at the moment, the first side wall touches the cutter, so that the first side wall interferes with the symmetrically designed cutter, in the prior art, when the U-shaped plate is bent, the plate is bent for the first side wall, the problem that the processing performance of the plate is reduced, and the aesthetic problem that the folding performance of the second side wall is eliminated. Meanwhile, when workpieces with small bending edges, such as the shell, a stand and the like, are bent, the supporting plate needs to be supported by means of an external manipulator; when the width edge of a workpiece such as a door and window piece is bent, an upper cutter and a lower forming die need to be reversely mounted, and the lower forming die is positioned above the upper cutter, but the problem of mopping in the processing process of the door and window piece still exists.

Patent publication No. CN109719171A discloses a plate bending device, which comprises a cutter component, a die holder and a chopping block from top to bottom in sequence; the cutter assembly sequentially comprises a cylinder, a pressing plate and a cutter from top to bottom, wherein the upper part of a sliding rod penetrates through the pressing plate and coaxially extends into the pressure spring and is not in contact with the sliding plate in a non-working state, the bottom end of the sliding rod is provided with a knife edge part for cutting off a plate, the step surfaces on two sides of the knife edge part, which are right opposite to one side of the knife edge, are respectively provided with a vertical upward convex edge, and the die pressing surfaces of the two die holders can be matched with the waist surface of the upper knife body to punch and form the middle section of the plate; the cutting board is arranged right below the die holders, and the distance between the cutting board and the die holders ensures that the length of the plate to be bent pressed downwards by the cutter assembly from the die holders is not less than the length of the section where the welding end of the plate is located. The cutter in the plate bending device adopts a symmetrical design, and the problems cannot be solved.

Disclosure of Invention

One of the objectives of the present invention is to provide an asymmetric tool set to solve the above technical problems, in which the asymmetric design of the tool bit of the upper tool and the asymmetric design of the forming groove in the lower forming die are used to increase the processing range of the plate and realize the function of part of the mechanical support plate during the processing of the plate; the processing is integrated, and the replacement of different and various cutting dies of a special workpiece is reduced; and improves the workability of the processing.

In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:

an asymmetric tool module, comprising:

the upper cutter comprises a cutter body and a cutter head arranged at one end of the cutter body, the cutter head comprises two side walls which form an included angle, a cutter point of the cutter head is formed at the joint of the two side walls, and included angles between a perpendicular line of the cutter point passing through the cutter point and parallel to the center line of the cutter body in the height direction and the two side walls are different;

the lower forming die comprises a forming die body and a forming groove arranged at the upper end of the forming die body, the forming groove comprises two forming side walls arranged at an included angle, the joint of the two forming side walls forms the groove bottom of the forming groove, and the included angles between the perpendicular line of the groove bottom passing through the groove bottom and parallel to the central line of the forming die body along the height direction and the two forming side walls are different;

the tool bit is arranged above the forming groove, and a workpiece to be machined is bent in the forming groove through the tool bit.

The cutter head of the upper cutter is designed asymmetrically, so that the upper cutter is matched with the lower forming die to increase the processing range when the plate is bent in a U shape; specifically, when a cutter head of a symmetrical design cutter is used for bending a plate in a U shape to form a U-shaped plate, a first side wall of the U-shaped plate is bent for the first time, then the plate is bent for the second time to form a second side wall of the U-shaped plate, if the length of the first side wall is greater than or equal to that of a bottom plate between the first side wall and the second side wall, and the angle between the first side wall and the bottom plate is 90 degrees, in the process of bending the plate for the second time, because the plate has resilience, when the angle between the second side wall and the bottom plate needs to be smaller than or equal to 90 degrees, an included angle between a center line of the symmetrically designed cutter head and the bottom plate is smaller than or equal to 45 degrees, at the moment, the first side wall inevitably touches the cutter, so that the first side wall interferes with the symmetrical design cutter, therefore, in the prior art, when the plate is bent in the U shape, the plate can be subjected to W processing, firstly, the plate is bent for the first time at the center of the plate, then the two side walls of the U-shaped plate are formed by bending, so that the interference problem of the first side wall of the second side wall in the processing process can be solved, but the crease appears on the bottom plate of the plate, the attractiveness and the use performance of the plate are influenced, in some scenes with higher requirements, the performance and the attractiveness of the plate are reduced due to the existence of the crease, the included angles of the bottom wall of the U-shaped plate and the perpendicular line of the tool nose are different due to the fact that the included angles of the two side walls and the perpendicular line of the tool nose are different, in the process of bending the plate to form the second side wall, the included angle of the bottom wall of the U-shaped plate and the perpendicular line of the tool nose is different, and the included angle of the bottom wall of the U-shaped plate and the perpendicular line of the tool nose is larger than the included angle of the second side wall of the U-shaped plate and the perpendicular line of the tool nose, for the U-shaped plate of which the length of the first side wall is greater than or equal to that of the bottom plate between the first side wall and the second side wall, in the process of forming the second side wall and enabling the included angle formed by bending between the second side wall and the bottom wall to be smaller than 90 degrees, because the included angle between the bottom wall of the U-shaped plate and the perpendicular line of the tool nose is greater than 45 degrees and the included angle between the second side wall and the perpendicular line of the tool nose is smaller than 45 degrees, the first side wall cannot interfere with the upper tool, and the problem of interference which cannot be solved by a symmetrical tool is solved.

Preferably, the tool bit is arranged right above the forming groove, and the perpendicular line of the tool tip is superposed with the perpendicular line of the groove bottom, so that the tool tip is arranged right opposite to the groove bottom. The distance between the upper end of the first forming side wall and the perpendicular line of the tool nose is VL, the distance between the upper end of the second forming side wall and the perpendicular line of the tool nose is VR, and VL is not equal to VR.

Preferably, the perpendicular line of the tool nose does not coincide with the perpendicular line of the groove bottom, and a spacing distance delta T is arranged between the perpendicular line of the tool nose and the perpendicular line of the groove bottom, so that the tool nose and the groove bottom are eccentrically arranged.

Preferably, the forming groove comprises a first forming side wall and a second forming side wall, the groove bottom is formed at the intersection of the first forming side wall and the lower end of the second forming side wall, the distance between the upper end of the first forming side wall and the perpendicular line of the tool nose is VL, the distance between the upper end of the second forming side wall and the perpendicular line of the tool nose is VR, and VL = VR.

Preferably, one of them lateral wall of tool bit with the contained angle a of knife tip perpendicular line and the shaping lateral wall of the shaping groove that this lateral wall corresponds the setting with the contained angle c of tank bottom perpendicular line equals, another lateral wall of tool bit with contained angle b of knife tip perpendicular line and the shaping lateral wall of the shaping groove that this lateral wall corresponds the setting with the contained angle d of tank bottom perpendicular line equals.

Preferably, the tool bit with set up the contained angle between the cutter body, the tool bit includes first tool bit lateral wall, second tool bit lateral wall, first tool bit lateral wall with the second tool bit lateral wall is the contained angle setting, the lower extreme of first tool bit lateral wall with the crossing department of second tool bit lateral wall lower extreme forms the knife tip of tool bit, first tool bit lateral wall upper end with second tool bit lateral wall upper end upwards extends and forms the lateral wall of two relative settings of cutter body. The arrangement can ensure that the forming process of the cutter head is simple and the manufacturing cost is low.

Preferably, the cutter head is obliquely extended from one end of the cutter body.

As more preferably, the tool bit with set up the contained angle between the cutter body, the tool bit includes first tool bit lateral wall, second tool bit lateral wall, third tool bit lateral wall, first tool bit lateral wall with the second tool bit lateral wall is the contained angle setting, the lower extreme of first tool bit lateral wall with the crossing department of second tool bit lateral wall lower extreme forms the knife tip of tool bit, the third tool bit lateral wall with first tool bit lateral wall sets up relatively, the third tool bit lateral wall certainly the upper end of second tool bit lateral wall extends the setting, first tool bit lateral wall upper end with third tool bit lateral wall upper end upwards extends the formation two lateral walls that set up relatively of cutter body. The arrangement does not need to vertically extend from the upper ends of the two side walls of the cutter head to form the whole cutter body, so that the width and the weight of the whole upper cutter can be reduced, and only the cutter head used for bending is arranged to form the side walls which are crossed in a V shape.

Preferably, two opposite side walls of the cutter body are arranged in parallel, so that the main body of the cutter body is a plate-shaped part, and the clamping of the cutter die clamp is facilitated.

Preferably, the asymmetric tool module further comprises a side blocking device, the side blocking device comprises a side blocking block and a side blocking adjusting block, one end of the side blocking block is connected with the tool body, the side blocking adjusting block is installed on the side blocking block, and the interval between the side blocking adjusting block and the side blocking block is adjustable, so that when the upper tool bends a plate, one end face of the side blocking adjusting block is abutted to the side edge of the lower forming die.

Preferably, the side dog include with the installation department of cutter body connection, do the side keeps off the connecting portion that the regulating block provided the mounted position, the one end of installation department with the cutter body passes through the screw connection, sets up like this and can make the side dog be elevating movement along with the cutter body, connecting portion set up the other end of installation department, connecting portion with contained angle between the installation department is the right angle, sets up like this and can make the side keep off the regulating block and install behind the connecting portion with the extension face parallel arrangement of cutter body.

More preferably, the side block adjusting block is connected with the connecting portion through an adjusting device, the adjusting device includes an adjusting screw, a nut, and a connecting screw, the adjusting screw and the nut are disposed on one side of the connecting portion, the adjusting screw sequentially passes through the nut and the mounting portion, the connecting screw passes through the side block adjusting block and is connected with one end of the adjusting screw, and the distance between the side block adjusting block and the connecting portion is adjusted by adjusting the penetration distance of the adjusting screw on the side block, so that when the upper tool is matched with lower forming dies with different precision to perform bending operation, one side of the side block adjusting block facing the lower forming die is always abutted against the sidewall of the lower forming die by adjusting the position of the side block adjusting block.

More preferably, the side block adjusting block is provided with an inclined surface facing the bottom of the side wall of the lower forming die, and the inclined surface enables inclined surface transition between the side block adjusting block and the lower forming die in the descending process of the cutter body, so that the side block adjusting block is prevented from directly contacting with the lower forming die to impact the lower forming die.

Preferably, the side stop block is connected with one side wall of the tool body, and the side wall and one side wall of the tool bit, which has a small included angle with the perpendicular line of the tool tip, are located on the same side.

The other purpose of the present invention is to provide a plate bending device, which includes a lifting slider assembly and welding part, a cutting die holder, and the asymmetric tool module of any of the above embodiments, wherein the cutting die holder is installed at the lower end of the lifting slider assembly and welding part, the cutting die holder clamps the upper end of the upper tool, and the lower forming die is disposed below the upper tool. The lifting slide block assembly and welding piece realizes lifting motion through an external driving device, so that the upper cutter is driven to do lifting motion together, and the bending of the plate is completed.

Has the beneficial effects that:

according to the asymmetric cutter module, through the asymmetric design of the cutter head of the upper cutter and the asymmetric design of the forming groove in the lower forming die, in the plate processing process, for the U-shaped plate of which the length of the first side wall is greater than or equal to that of the bottom plate between the first side wall and the second side wall, when the second side wall is formed and an included angle formed by bending between the second side wall and the bottom wall is smaller than 90 degrees, because the included angle between the bottom wall of the U-shaped plate and the perpendicular line of the cutter point is greater than 45 degrees and the included angle between the second side wall and the perpendicular line of the cutter point is smaller than 45 degrees, the first side wall cannot interfere with the upper cutter, the problem of interference which cannot be solved by the symmetric cutter is solved, and the plate processing range is increased; compared with a cutter with a symmetrical design, when workpieces with smaller bending edges such as a processing shell, a stand and the like are bent, the function of a part of mechanical supporting plate can be realized; to the longer panel of length, when bending a side to width direction, because the contained angle of the long side of panel and knife tip perpendicular line is greater than the contained angle of the long side and the knife tip perpendicular line of panel in the symmetrical design cutter course of working in the asymmetric cutter course of working of this application, consequently the height that highly is greater than the long side of panel apart from ground in the symmetrical design cutter course of working in the long side of panel apart from ground in the asymmetric cutter course of working to this application can prevent that the end of long side from dragging ground. So this application makes processing an organic whole, reduces the replacement of the different multiple cutting die of special work piece, and can not form the crease in the middle zone of panel, and the processing operability can also be improved to the asymmetric cutter module of this application simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of a plate bending apparatus according to embodiment 5 of the present invention;

FIG. 2 is an enlarged view of a portion of the structure shown at A in FIG. 1;

fig. 3 is an exploded view of a structure of a plate bending apparatus according to embodiment 5 of the present invention;

fig. 4 is a cross-sectional view of a panel bending apparatus according to the present invention;

FIG. 5 is a view showing the structure of the upper tool of the asymmetric tool module according to the present invention;

FIG. 6 is a view showing a structure of a lower forming die in an asymmetric cutting tool module according to the present invention;

FIG. 7 is a structural view illustrating a U-shaped bending of a plate material by the plate material bending apparatus according to the present invention;

fig. 8 is a structural view of an asymmetric tool module according to embodiment 1 of the present invention;

fig. 9 is a structural view of an asymmetric tool module according to embodiment 2 of the present invention;

fig. 10 is a force analysis diagram of the lower forming die during the bending process of the asymmetric tool module according to the present invention.

Reference numerals

1. Feeding a cutter; 11. a tool body; 12. a cutter head; 121. a first bit side wall; 122. a second bit sidewall; 123. a third bit sidewall; 124. a tool nose perpendicular line; 2. a lower forming die; 21. forming a groove; 211. a first forming sidewall; 212. a second profiled sidewall; 213. a perpendicular line at the bottom of the groove; 3. a plate material; 31. a first side wall; 32. a base plate; 33. a second side wall; 4. a side stop block; 5. a side block adjusting block; 6. a cutting die clamp; 7. lifting the sliding block assembly and welding pieces; 8. and adjusting the screw.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

The technical solution of the present invention is described in detail with specific examples below.

Example 1

As shown in fig. 5 and 6, an asymmetric tool module includes: the upper cutter 1 comprises a cutter body 11 and a cutter head 12 arranged at one end of the cutter body 11, the cutter head 12 comprises two side walls arranged at an included angle, a cutter point of the cutter head 12 is formed at the joint of the two side walls, and included angles between a cutter point vertical line 124 passing through the cutter point and being parallel to the center line of the cutter body 11 along the height direction and the two side walls are different; the lower forming die 2 comprises a forming die body and a forming groove 21 arranged at the upper end of the forming die body, the forming groove 21 comprises two forming side walls arranged at an included angle, the joint of the two forming side walls forms the bottom of the forming groove 21, and the included angles between a vertical line 213 of the bottom of the forming groove, which passes through the bottom of the forming groove and is parallel to the central line of the forming die body along the height direction, and the two forming side walls are different; the tool bit 12 is arranged above the forming groove 21, and a workpiece to be machined is bent in the forming groove 21 through the tool bit 12.

As shown in fig. 6 and 8, in the present embodiment, the tool tip 12 is disposed directly above the forming groove 21, and the perpendicular line 124 of the tool tip coincides with the perpendicular line 213 of the groove bottom, so that the tool tip is disposed directly opposite to the groove bottom. The forming groove 21 comprises a first forming side wall 211 and a second forming side wall 212, the intersection of the lower ends of the first forming side wall 211 and the second forming side wall 212 forms the groove bottom, the distance between the upper end of the first forming side wall 211 and the tool nose perpendicular line 124 is VL, the distance between the upper end of the second forming side wall 212 and the tool nose perpendicular line 124 is VR, and VL ≠ VR.

One of the side walls of the tool bit 12 is equal to the included angle a1 of the perpendicular line 124 of the tool tip and the included angle c1 of the perpendicular line 213 of the groove bottom of the forming side wall of the forming groove 21 correspondingly arranged on the side wall, and the other side wall of the tool bit 12 is equal to the included angle b1 of the perpendicular line 124 of the tool tip and the included angle d1 of the perpendicular line 213 of the groove bottom of the forming side wall of the forming groove 21 correspondingly arranged on the side wall.

As shown in fig. 5, the cutting head 12 is obliquely extended from one end of the tool body 11. The tool bit 12 with set up the contained angle between the cutter body 11, the tool bit 12 includes first tool bit lateral wall 121, second tool bit lateral wall 122, third tool bit lateral wall 123, first tool bit lateral wall 121 with second tool bit lateral wall 122 is the contained angle setting, the lower extreme of first tool bit lateral wall 121 with the crossing department of second tool bit lateral wall 122 lower extreme forms the knife tip of tool bit 12, third tool bit lateral wall 123 with first tool bit lateral wall 121 sets up relatively, third tool bit lateral wall 123 certainly the upper end of second tool bit lateral wall 122 extends the setting, first tool bit lateral wall 121 upper end with third tool bit lateral wall 123 upper end upwards extends the formation two lateral walls that set up relatively of cutter body 11. This arrangement eliminates the need to form the entire cutter body 11 by extending vertically from the upper ends of both side walls of the tip 12, and thus the width and weight of the entire upper cutter 1 can be reduced, and only the tip 12 as a bending work is provided with side walls intersecting in a V-shape.

The two opposite side walls of the cutter body 11 are arranged in parallel, so that the main body of the cutter body 11 is a plate-shaped part, and the clamping of the cutter die clamp 6 is facilitated.

As shown in fig. 7, the asymmetric tool module of the present embodiment makes the tool bit 12 of the upper tool 1 have an asymmetric design, so that when the upper tool 1 cooperates with the lower forming die 2 to perform U-shaped bending on the sheet material 3, the processing range is increased; specifically, in the process of bending the plate 3 into a U-shaped plate by using the cutter head 12 of the symmetrical design cutter, a first bending is performed to form a first side wall 31 of the U-shaped plate, then the plate 3 is bent for a second time to form a second side wall 33 of the U-shaped plate, if the length of the first side wall 31 is greater than or equal to that of the bottom plate 32 between the first side wall 31 and the second side wall 33, and the angle between the first side wall 31 and the bottom plate 32 is 90 °, in the process of bending the plate 3 for the second time, because the plate 3 has a springback amount, when the angle between the second side wall 33 and the bottom plate 32 needs to be less than or equal to 90 °, the included angle between the center line of the symmetrically designed cutter head 12 and the bottom plate 32 is less than or equal to 45 °, the first side wall 31 inevitably touches the cutter, which may cause interference of the first side wall 31 with the symmetrically designed cutter, therefore, in the prior art, when the plate 3 is bent in a U shape, the plate 3 is W-processed, and first bent for the first time at the center of the plate 3, and then bent to form two side walls of the U-shaped plate, so as to eliminate the interference problem of the first side wall 31 of the second side wall 33 during the processing, but this will cause a crease on the bottom plate 32 of the plate 3, which affects the aesthetic appearance and usability of the plate 3, and for some scenes with higher requirements, the performance and aesthetic appearance of the plate 3 will be reduced due to the crease, while the asymmetrically designed tool of the present application will cause the included angle between the bottom wall of the U-shaped plate and the perpendicular line 124 of the nose to be different from the included angle between the second side wall 33 of the U-shaped plate and the perpendicular line 124 of the nose to be different from each other due to the different included angles between the two side walls and the perpendicular line 124 of the nose in the process of bending the plate 3 to form the second side wall 33, and the included angle between the bottom wall of the U-shaped plate and the perpendicular line 124 of the tool nose is larger than the included angle between the second side wall 33 of the U-shaped plate and the perpendicular line 124 of the tool nose, and for the U-shaped plate with the length of the first side wall 31 larger than or equal to that of the bottom plate 32 between the first side wall 31 and the second side wall 33, in the process of forming the second side wall 33 and enabling the included angle formed by bending between the second side wall 33 and between the bottom walls to be smaller than 90 degrees, because the included angle between the bottom wall of the U-shaped plate and the perpendicular line 124 of the tool nose is larger than 45 degrees, the included angle between the second side wall 33 and the perpendicular line 124 of the tool nose is smaller than 45 degrees, interference between the first side wall 31 and the upper tool 1 can be avoided, and the problem of interference which cannot be solved by symmetrical tools is solved.

Example 2

Only the differences from the above embodiments will be described, and in this embodiment, as shown in fig. 9, the perpendicular cutting edge 124 does not coincide with the perpendicular groove bottom 213, and a separation distance Δ T is provided between the perpendicular cutting edge 124 and the perpendicular groove bottom 213, so that the cutting edge and the groove bottom are eccentrically disposed.

The forming groove 21 comprises a first forming side wall 211 and a second forming side wall 212, the intersection of the first forming side wall 211 and the lower end of the second forming side wall 212 forms the groove bottom, the distance between the upper end of the first forming side wall 211 and the cutting perpendicular 124 is VL, the distance between the upper end of the second forming side wall 212 and the cutting perpendicular 124 is VR, and VL = VR.

Example 3

Only differences from the above embodiments are described in this embodiment, an included angle is formed between the tool bit 12 and the tool body 11, the tool bit 12 includes a first bit side wall 121 and a second bit side wall 122, the first bit side wall 121 and the second bit side wall 122 are arranged at the included angle, a cutting tip of the tool bit 12 is formed at an intersection of a lower end of the first bit side wall 121 and a lower end of the second bit side wall 122, and an upper end of the first bit side wall 121 and an upper end of the second bit side wall 122 extend upward to form two oppositely arranged side walls of the tool body 11. The arrangement enables the forming process of the cutter head 12 to be simple and the manufacturing cost to be low.

Example 4

Only the differences from the above embodiments are described in this embodiment, as shown in fig. 3 and 4, the asymmetric tool module further includes a side stopper device, the side stopper device includes a side stopper 4 and a side stopper adjusting block 5, one end of the side stopper 4 is connected to the tool body 11, the side stopper adjusting block 5 is mounted on the side stopper 4, and the interval between the side stopper adjusting block 5 and the side stopper 4 is adjustable, so that when the upper tool 1 bends the plate 3, one end surface of the side stopper adjusting block 5 abuts against the side edge of the lower forming die 2.

Side dog 4 include with the installation department that cutter body 11 connects, do side dog regulating block 5 provides the connecting portion of mounted position, the one end of installation department with cutter body 11 passes through the screw connection, sets up like this and can make side dog 4 be elevating movement along with cutter body 11 together, connecting portion set up the other end of installation department, connecting portion with contained angle between the installation department is the right angle, sets up like this and can make side dog regulating block 5 install behind the connecting portion with cutter body 11's extension face parallel arrangement. The side block 4 is connected to a side wall of the tool body 11, and the side wall and one of the side walls of the tool bit 12, which has a smaller included angle with the perpendicular cutting edge 124, are located on the same side.

The side block adjusting block 5 is connected with the connecting portion through an adjusting device, the adjusting device comprises an adjusting screw 8, a nut and a connecting screw, the adjusting screw 8 and the nut are arranged on one side of the connecting portion, the adjusting screw 8 sequentially penetrates through the nut and the mounting portion, the connecting screw penetrates through the side block adjusting block 5 to be connected with one end of the adjusting screw 8, the distance between the side block adjusting block 5 and the connecting portion is adjusted by adjusting the penetrating distance of the adjusting screw on the side block 4, and therefore when the upper cutter 1 is matched with the lower forming dies 2 with different precisions to perform bending work, one face, facing the lower forming dies 2, of the side block adjusting block 5 is always abutted against the side wall of the lower forming dies 2 by adjusting the position of the side block adjusting block 5.

The side block adjusting block 5 is provided with an inclined plane towards the bottom of the side wall of the lower forming die 2, and in the descending process of the cutter body 11, the inclined plane enables inclined plane transition to be formed between the side block adjusting block 5 and the lower forming die 2, so that the side block adjusting block 5 is prevented from being in direct contact with the lower forming die 2 to impact the lower forming die 2.

When the plate 3 is made of an aluminum plate or a thin plate, because the bending pressure is relatively low, the side blocking adjusting block 5 is arranged on the side with relatively low asymmetric transverse force to abut against the lower forming die 2, when the tool body 11 moves downwards and meets a workpiece, the side blocking adjusting block 5 starts to adhere to the lower forming die 2 to generate transverse reaction force so as to counteract the transverse force applied to the tool, specifically, as shown in fig. 10, an included angle between the second forming side wall 212 and the groove bottom perpendicular line 213 is a, an included angle between the first forming side wall 211 and the groove bottom 213 is b, when the upper tool 1 bends the plate 3, the intersection of the forming groove 21 and the upper end face of the lower forming die 2 generates reaction force after receiving the pressure applied by the upper tool 1, and the reaction force generated inside the lower forming die 2 is shown under stress analysis:

BFR-X＝BFR*cos(90°-b)；

BFL-X＝BFR*cos(90°-a)；

BFR-X＝BFR*sin(b)；

BFL-X＝BFL*sin(a)；

BF-X＝BFL*sin(a)-BFR*sin(b)；

BF-Y＝BFL-Y+BFR-Y＝BFR*cos(b)+BFL*cos(a)；

the BFR is the reaction force generated by the right side of the lower forming die 2, the BFL is the reaction force generated by the left side of the lower forming die 2, the BFR-X is the component force of the reaction force generated by the right side of the lower forming die 2 in the X direction, the BFL-X is the component force of the reaction force generated by the left side of the lower forming die 2 in the X direction, the BF-X is the resultant force of the reaction force decomposition of the right side and the left side of the lower forming die 2 in the X direction, and the component force decomposition of the reaction force of the right side and the left side of the lower forming die 2 in the X direction is opposite to the component force direction of the reaction force in the X direction, so the difference of the BFL sin (a) -BFR sin (b) becomes the transverse force BF-X received by the cutter, and because the angle a is smaller than the angle b, the side blocking adjusting block 5 is arranged on one side of the second forming side wall 212, the side blocking adjusting block 5 starts to generate the transverse force generated by the lower forming die 2 to counteract the transverse force of the transverse force received by the BF-X. BF-Y is the resultant force of the resolving of the reaction force on the right side and the left side of the lower forming die 2 in the Y direction, and the resolving of the reaction force on the right side and the left side of the lower forming die 2 in the Y direction has the same direction, so the sum of BFR (b) + BFL (a) is the resultant force of the resolving of the reaction force on the Y direction generated by the lower forming die 2, and the force received by the lower forming die 2 exists in the form of internal force, and no excessive stress is generated on the frame oil cylinder.

Example 5

As shown in fig. 1 and 2, a plate bending apparatus includes a lifting slide assembly welding part 7, a die holder 6, and the asymmetric tool module according to any of the above embodiments, wherein the die holder 6 is mounted at a lower end of the lifting slide assembly welding part 7, the die holder 6 is used for clamping an upper end of the upper tool, and the lower forming die 2 is disposed below the upper tool. The lifting slide block assembly and welding piece 7 achieves lifting movement through an external driving device, so that the upper cutter is driven to do lifting movement together, and bending of the plate 3 is completed.

The embodiments of the asymmetric tool module and the plate bending device comprising the same provided by the invention are explained in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can also make several improvements and modifications, and those improvements and modifications also fall into the protection scope of the present claims.

Claims

1. An asymmetric tool module, comprising:

the upper cutter (1), wherein the upper cutter (1) comprises a cutter body (11) and a cutter head (12) arranged at one end of the cutter body (11), the cutter head (12) comprises two side walls which are arranged in an included angle, a cutter point of the cutter head (12) is formed at the joint of the two side walls, and included angles between a cutter point vertical line (124) which passes through the cutter point and is parallel to the center line of the cutter body (11) along the height direction and the two side walls are different;

the lower forming die (2), the lower forming die (2) includes the forming die body and sets up in the forming groove (21) of the said forming die body upper end, the said forming groove (21) includes two forming sidewalls that are set up in the form of included angle, the junction of two forming sidewalls forms the tank bottom of the said forming groove (21), cross the said tank bottom and parallel to central line of the said forming die body along the direction of height tank bottom perpendicular (213) and included angle of two forming sidewalls are different each other;

the tool bit (12) is arranged above the forming groove (21), and a workpiece to be machined is bent in the forming groove (21) through the tool bit (12);

the asymmetric tool module further comprises a side blocking device, the side blocking device comprises a side stop block (4) and a side blocking adjusting block (5), one end of the side stop block (4) is connected with the tool body (11), the side blocking adjusting block (5) is installed on the side stop block (4), and the interval between the side blocking adjusting block (5) and the side stop block (4) is adjustable, so that when the upper tool (1) bends the plate (3), one end face of the side blocking adjusting block (5) is abutted to the side edge of the lower forming die (2).

2. The asymmetric tool module of claim 1 wherein the cutting tip (12) is disposed directly above the forming pocket (21), the perpendicular cutting tip (124) coinciding with the perpendicular pocket bottom (213) such that the cutting tip is disposed directly opposite the pocket bottom.

3. The asymmetric tool module of claim 1, wherein the perpendicular tip line (124) does not coincide with the perpendicular slot bottom (213), and wherein a separation distance Δ T is provided between the perpendicular tip line (124) and the perpendicular slot bottom (213) such that the tip is off-center with the slot bottom.

4. The asymmetric tool module of claim 3 wherein the forming pocket (21) comprises a first forming sidewall (211) and a second forming sidewall (212), wherein the intersection of the first forming sidewall (211) and the lower end of the second forming sidewall (212) forms the pocket bottom, the distance between the upper end of the first forming sidewall (211) and the perpendicular nose line (124) is VL, and the distance between the upper end of the second forming sidewall (212) and the perpendicular nose line (124) is VR, VL = VR.

5. The asymmetric tool set according to any of claims 1 to 4, wherein the angle a between one of the side walls of the tool tip (12) and the perpendicular cutting edge (124) is equal to the angle c between the corresponding forming side wall of the forming groove (21) and the perpendicular groove bottom (213), and the angle b between the other side wall of the tool tip (12) and the perpendicular cutting edge (124) is equal to the angle d between the corresponding forming side wall of the forming groove (21) and the perpendicular groove bottom (213).

6. The asymmetric tool set according to claim 5, wherein the cutting head (12) is obliquely extended from one end of the tool body (11).

7. The asymmetric tool module as claimed in claim 6, wherein an included angle is formed between the tool bit (12) and the tool body (11), the tool bit (12) comprises a first bit side wall (121), a second bit side wall (122) and a third bit side wall (123), the first bit side wall (121) and the second bit side wall (122) are arranged at the included angle, a cutting tip of the tool bit (12) is formed at the intersection of the lower end of the first bit side wall (121) and the lower end of the second bit side wall (122), the third bit side wall (123) and the first bit side wall (121) are arranged oppositely, the third bit side wall (123) extends from the upper end of the second bit side wall (122), and the upper end of the first bit side wall (121) and the upper end of the third bit side wall (123) extend upwards to form two opposite side walls of the tool body (11).

8. The asymmetric tool module as claimed in claim 1, wherein the side stopper (4) comprises a mounting portion connected to the tool body (11), a connecting portion providing a mounting position for the side stopper adjusting block (5), one end of the mounting portion is connected to the tool body (11) by a screw, and the connecting portion is disposed at the other end of the mounting portion.

9. A sheet bending apparatus comprising a lifter shoe assembly weldment (7), a die holder (6), and further comprising the asymmetric tool module of any one of claims 1-8, wherein the die holder (6) is mounted at a lower end of the lifter shoe assembly weldment (7), the die holder (6) clamps an upper end of the upper tool, and the lower forming die (2) is disposed below the upper tool.