A bending device

Abstract

The present invention discloses a bending device, which belongs to the technical field of bending equipment, and comprises a clamping module, a first bending module and a second bending module; the clamping module clamps and positions the workpiece; the first bending module performs a first bending on the workpiece; the second bending module bends the freely extending part of the workpiece after the first bending; the bending device of the present invention cooperates with the clamping module, the first bending module and the second bending module, and can perform bending operations at different positions of the workpiece after one clamping, and the bending angle can also be adjusted as needed.

Description

Technical Field

[0001] The invention relates to the technical field of bending equipment, and in particular to a bending device. Background Art

[0002] During the production process of rubber valves, the valves generally need to be bent multiple times. The existing bending devices used for valves usually bend one position of the valve each time. When multiple bends of the valve need to be processed, they need to be processed separately. When bending at different positions and different bending angles, multiple sets of tooling are required for multiple clamping to achieve bending at multiple positions and different bending angles. The existing bending devices cannot meet the production needs well. In addition, multiple clamping has problems such as poor bending angle accuracy, troublesome adjustment, and frequent clamping that easily causes damage to the workpiece, which affects product quality and efficiency, and the product qualification rate is also low. Summary of the invention

[0003] In order to solve the problems existing in the prior art, the present invention provides a bending device, which can complete the bending of the workpiece at different positions and with different curvatures after the workpiece is clamped once, thereby improving the work efficiency and achieving accurate bending accuracy.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] The present invention provides a bending device for bending a workpiece; the device comprises a pressing module, a first bending module and a second bending module;

[0006] The clamping module clamps and positions the workpiece;

[0007] The first bending module performs a first bending on the workpiece;

[0008] The second bending module bends the freely extending portion of the workpiece after one bending is completed.

[0009] As a preferred technical solution, the pressing module includes a fixed slide plate, a movable slide plate, a movable clamping block, a pressing rod, a pressing power assembly and an elastic device;

[0010] The fixed carriage and the movable carriage are arranged side by side, and the movable carriage can move closer to or away from the fixed carriage;

[0011] A bending die is provided on the side of the fixed carriage facing the movable carriage;

[0012] The movable clamping block is arranged on a side of the movable carriage close to the fixed carriage, and can move up and down relative to the movable carriage;

[0013] The elastic device applies an upward force on the movable clamping block;

[0014] The pressure rod is hinged to the movable carriage, and the action end of the pressure rod abuts against the upper side of the movable clamping block;

[0015] The clamping power assembly is used to drive the driving end of the pressure rod to lift up and press down the movable clamping block, and to drive the movable carriage to approach the fixed carriage.

[0016] As a preferred technical solution, the pressing module includes a supporting guide rail, and the fixed carriage and the movable carriage are both slidably arranged on the upper side of the supporting guide rail; the supporting guide rail is provided with a fixed carriage adjustment bolt for adjusting the position of the fixed carriage;

[0017] And / or, the bending die is detachably fixed on the fixed carriage;

[0018] And / or, the bending die has a first bending die groove;

[0019] And / or, the movable clamping block has an avoidance groove on the side facing the fixed carriage;

[0020] And / or, the action end of the pressure rod in contact with the movable clamping block is cam-shaped.

[0021] As a preferred technical solution, the clamping module includes a workpiece support plate; the fixed slide plate and the movable slide plate are respectively processed with a first support groove and a second support groove on the opposite sides; the workpiece support plate is located in the second support groove and the first support groove and is on the lower side of the movable clamping block.

[0022] As a preferred technical solution, the elastic device is arranged between the movable clamping block and the workpiece supporting plate.

[0023] As a preferred technical solution, a clamping block mounting seat is provided on the upper groove wall of the second supporting groove; a floating mounting hole is provided in the clamping block mounting seat, and the floating mounting hole passes through the upper and lower side surfaces of the clamping block mounting seat, and a part of the movable clamping block extends into the floating mounting hole from the lower end opening of the floating mounting hole, and is slidably connected to the clamping block mounting seat up and down through a floating shaft.

[0024] As a preferred technical solution, floating holes are processed on two opposite side walls of the floating mounting hole, and the floating holes are long strip holes extending up and down; the two ends of the floating shaft extend into the two floating holes respectively, and the floating shaft can slide up and down relative to the floating holes;

[0025] And / or, the end of the floating shaft has a positioning plane, and when the floating shaft is at the lower limit position, the positioning plane can position the movable clamping block;

[0026] And / or, a clamping block guide groove is provided on the lower end surface of the floating mounting hole, the clamping block guide groove is communicated with the floating mounting hole and opens on the right side surface of the clamping block mounting seat; the movable clamping block is slidably arranged in the clamping block guide groove up and down, and partially extends out of the clamping block guide groove;

[0027] And / or, the upper end of the floating mounting hole has a pressure rod guide groove, and the active end of the pressure rod is located in the pressure rod guide groove and can slide relative to the pressure rod guide groove.

[0028] As a preferred technical solution, the clamping power assembly includes a clamping and pressing convex block, a guide seat and a clamping power component; the clamping and pressing convex block is slidably arranged on the guide seat and reciprocates under the action of the clamping power component;

[0029] The clamping and pressing down protrusion has a first driving surface and a second driving surface, wherein the first driving surface cooperates with the driving end of the pressure rod to lift the driving end of the pressure rod; the left end of the movable slide has a driving platform, and the driving platform cooperates with the second driving surface to push the movable slide to move to the right; at the same time, the clamping and pressing down protrusion first pushes the movable slide to move to the right, and then lifts the driving end of the pressure rod.

[0030] As a preferred technical solution, the first driving surface is arranged on the upper side surface of the clamping and pressing protrusion, and the second driving surface is located on the right side surface of the clamping and pressing protrusion facing the movable slide; the clamping and pressing protrusion moves forward and backward relative to the guide seat;

[0031] And / or, the first driving surface includes a first stationary surface, a first moving surface, and a second stationary surface connected in sequence; the first stationary surface and the second stationary surface are horizontal surfaces, the first stationary surface is located in front of the second stationary surface and is higher than the second stationary surface, and the first moving surface connects the first stationary surface and the second stationary surface;

[0032] And / or, the second driving surface includes a second moving surface and a third stationary surface; the third stationary surface is located at the front side of the second moving surface, the third stationary surface is perpendicular to the direction in which the movable carriage moves close to the fixed carriage, the front side of the second moving surface is connected to the third stationary surface, and the rear side extends obliquely to the left;

[0033] And / or, a first driving roller is rotatably mounted on the driving platform, a second driving roller is rotatably mounted on the driving end of the pressure rod, and the first driving roller and the second driving roller are in rolling contact with the second driving surface and the first driving surface respectively.

[0034] As a preferred technical solution, the first bending module includes a bending arm, a first bending drive component and a bending pressure wheel; the bending arm swings under the drive of the first bending drive component, driving the bending pressure wheel to approach the workpiece for bending or leave the workpiece for reset.

[0035] As a preferred technical solution, the second bending module includes a bending component and a position adjustment component;

[0036] The bending assembly includes a bending wheel mounting seat, a bending rotating wheel, a bending auxiliary wheel, a bending wheel and a second bending driving component;

[0037] The bending wheel mounting seat is connected to the position adjustment assembly, and the position of the bending operation is adjusted under the drive of the position adjustment assembly;

[0038] The bending wheel is rotatably mounted on the bending wheel mounting seat and rotates under the drive of the second bending driving component;

[0039] The bending wheel and the bending auxiliary wheel are both fixed on the end surface of the bending rotating wheel, and there is a gap between the two for accommodating the workpiece; the bending auxiliary wheel is coaxially arranged with the bending rotating wheel.

[0040] As a preferred technical solution, the bending wheel and the bending auxiliary wheel are detachably mounted on the bending rotating wheel via a bending wheel fixing block.

[0041] As a preferred technical solution, the position adjustment assembly includes a left-right adjustment mechanism for adjusting the position of the bending assembly in the left-right direction; the left-right adjustment mechanism includes a position adjustment base, a position adjustment guide rail and a position adjustment driving component; the position adjustment base is slidably mounted on the position adjustment guide rail, and the position adjustment driving component drives the position adjustment base to slide along the position adjustment guide rail; the bending wheel mounting seat is connected to the position adjustment base and moves left and right synchronously;

[0042] And / or, the position adjustment assembly includes a front-to-rear adjustment mechanism for adjusting the position of the bending assembly in the front-to-rear direction; the front-to-rear adjustment mechanism includes a forward guide base, a forward guide rail and a forward driving component; the forward guide base is slidably arranged on the forward guide rail, and under the action of the forward driving component, the forward guide base moves forward and backward along the forward guide rail; the bending wheel mounting seat is connected to the forward guide base and moves forward and backward synchronously.

[0043] As a preferred technical solution, the position adjustment assembly includes an up and down adjustment mechanism for adjusting the position of the bending assembly in the up and down directions; the up and down adjustment mechanism includes a height adjustment seat and a bending wheel height adjustment bolt; the height adjustment seat is provided with a vertically extending height adjustment guide groove, the bending wheel height adjustment bolt is threadedly connected to the upper groove wall of the height adjustment guide groove, and the lower end of the bending wheel height adjustment bolt extends into the height adjustment guide groove and is connected to the bending wheel mounting seat; by rotating the bending wheel height adjustment bolt, the bending wheel mounting seat is driven to rise or fall.

[0044] The beneficial effects of the present invention are as follows:

[0045] 1. The bending device provided by the technical solution can perform bending operations at different positions of the workpiece after one clamping through the cooperation of the clamping module, the first bending module and the second bending module. The bending angle can also be adjusted as needed; the work efficiency is improved; and it can also be connected with the control system to realize automated processing.

[0046] 2. It can be adaptively adjusted according to the actual bending angle, and through servo motor processing, the bending accuracy is accurate and the angle adjustment is convenient and quick.

[0047] 3. By adjusting the position of the bending component through the position adjustment component, the workpiece can be bent at multiple positions, reducing turnover and secondary processing, avoiding damage to the workpiece and inaccurate relative position caused by repeated positioning, and improving product quality.

[0048] 4. One device can be used to bend workpieces of various specifications, especially suitable for secondary bending at different angles and heights, with a wide range of adaptability.

[0049] 5. The clamping module has an ingenious structure. The clamping power assembly is used to drive the movable slide and the movable clamping block to achieve the positioning and clamping of the workpiece. The positioning accuracy is high and the clamping is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a bending device of the present invention;

[0051] Figure 2 It is a structural schematic diagram of a pressing module in an embodiment of a bending device of the present invention;

[0052] Figure 3 for Figure 1 A magnified image of area A;

[0053] Figure 4 It is a structural schematic diagram of the second bending module in the bending device embodiment of the present invention;

[0054] Figure 5 It is a front view of an embodiment of a bending device of the present invention;

[0055] Figure 6 for Figure 5 Enlarged view of area B;

[0056] Figure 7 A side view of an embodiment of a bending device of the present invention;

[0057] Figure 8 A top view of an embodiment of a bending device of the present invention;

[0058] Fig. 9 Schematic diagram of the bending state of the workpiece;

[0059] Fig.10 It is a schematic diagram of the structure of the clamping and pressing down protrusion in the embodiment of the bending device of the present invention.

[0060] In the figure:

[0061] 1-fixed bottom plate; 101-crank arm swing hole; 102-crank arm rotation bearing seat;

[0062] 2-pressing module; 201-pressing power component; 202-clamping pressing convex block; 203-first driving surface; 204-second driving roller; 205-second driving surface; 206-pressing rod; 207-hinged seat; 208-floating shaft; 209-movable clamping block; 210-bending die; 211-fixed carriage; 212-supporting guide rail; 213-fixed carriage adjustment bolt; 214-first guide groove; 215-first bending die groove; 216-first supporting groove; 217-working Component support plate; 218-second support groove; 219-movable carriage; 220-first driving roller; 221-guide seat; 222-driving platform; 223-clamping block mounting seat; 224-pressure rod guide groove; 225-floating hole; 226-floating mounting hole; 227-clamping block guide groove; 228-elastic device; 229-positioning plane; 230-second stationary surface; 231-first moving surface; 232-first stationary surface; 233-third stationary surface; 234-second moving surface;

[0063] 3-first bending module; 301-bending arm; 302-height adjustment swing arm; 303-pressing wheel adjustment rod; 304-roller adjustment bolt; 305-roller adjustment seat; 306-bending pressing wheel;

[0064] 4-second bending module; 401-support platform; 402-position adjustment guide rail; 403-position adjustment drive component; 404-position adjustment base; 405-advance guide rail; 406-advance guide base; 407-advance drive component; 408-second bending drive component; 409-bending wheel height adjustment bolt; 410-height adjustment seat; 411-height adjustment guide groove; 412-connecting block; 413-bending wheel mounting seat; 414-bending driving gear; 415-bending wheel; 416-bending auxiliary wheel; 417-bending wheel; 418-bending wheel fixing block;

[0065] 5-workpiece; 51-first bending portion; 52-second bending portion; 53-clamping end. DETAILED DESCRIPTION

[0066] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0067] For the sake of convenience, in the following text, Figure 1 The Y-axis direction is the front-to-back direction of the bending device, the arrow indicates the front direction, and the opposite direction is the rear direction; the X-axis direction is the left-right direction of the bending device, the arrow indicates the right direction, and the opposite direction is the left direction; similarly, the Z-axis direction is the up-down direction of the bending device, the arrow indicates the up direction, and the opposite direction is the down direction.

[0068] Please refer to Figure 1 , is an embodiment of a bending device provided by the present invention, comprising a fixed base plate 1, a pressing module 2, a first bending module 3 and a second bending module 4. The fixed base plate 1 is used to support the pressing module 2, the first bending module 3 and the second bending module 4. In actual application, the fixed base plate 1 can be fixed on a frame; the shape of the fixed base plate 1 is not limited to Figure 1 The rectangular plate structure shown in the figure only needs to be able to meet the installation and support requirements of the pressing module 2, the first bending module 3 and the second bending module 4.

[0069] The pressing module 2 presses and positions the workpiece 5, and cooperates with the first bending module 3 to complete the first bending of the workpiece 5; the second bending module 4 bends the free extension part of the workpiece 5 after the first bending. Fig. 9As shown, the workpiece 5 has a first bending portion 51 and at least one second bending portion 52; one end of the workpiece 5 connected to the rubber pad is called a clamping end 53, and the other end of the workpiece 5 is a free end. The clamping module 2 cooperates with the clamping end 53 to clamp and fix the workpiece 5; the first bending module 3 bends the workpiece 5 to form the first bending portion 51; after the first bending portion 51 is completed, the portion between the first bending portion 51 and the clamping end 53 is limited, and the portion between the first bending portion 51 and the free end of the workpiece 5 is a free extension portion; after the free extension portion changes from a vertical state to an inclined extension state, it extends obliquely to the second bending module 4; the second bending module 4 bends the free extension portion of the workpiece 5 to form a second bending portion 52.

[0070] Reference Figure 2 , Figure 3 , Figure 5 and Figure 6 The clamping module 2 includes a fixed carriage 211, a movable carriage 219, a movable clamping block 209, a pressure rod 206 and a clamping power assembly. A support rail 212 is fixedly mounted on the fixed base plate 1, and the support rail 212 extends in the left-right direction; the fixed carriage 211 and the movable carriage 219 are arranged in parallel, and are both slidably arranged on the upper side of the support rail 212. For example, the upper side of the support rail 212 has a concave first guide groove 214, and the fixed carriage 211 and the movable carriage 219 both have a boss that cooperates with the first guide groove 214; through the sliding cooperation between the boss and the first guide groove 214, the fixed carriage 211 and the movable carriage 219 can only slide in the extension direction of the first guide groove 214, and cannot be separated from the support rail 212. The first guide groove 214 may be a dovetail groove, and of course, an existing guide groove structure such as an I-shaped groove may also be used, which can be selected according to actual needs; accordingly, the structure of the boss is selected according to the first guide groove 214 .

[0071] The fixed carriage 211 and the movable carriage 219 can be close to or separated; when the fixed carriage 211 and the movable carriage 219 are separated, the set gap between the two forms a clamping space for placing or removing the workpiece 5. A first support groove 216 is provided on the side of the fixed carriage 211 facing the movable carriage 219. The first support groove 216 extends forward and backward, and is preferably opened on the front side of the fixed carriage 211, so that the operator can take or place the workpiece 5. A bending die 210 is provided on the upper groove wall of the first support groove 216. The bending die 210 can be an integrated structure with the fixed carriage 211; but preferably, the bending die 210 can be detachably fixed on the fixed carriage 211, so that the bending die 210 can be replaced as needed. The bending die 210 has a first bending die groove 215, the opening of which faces the movable carriage 219, which is used to guide the bending operation and also has the function of positioning the workpiece 5.

[0072] The lower groove wall of the first supporting groove 216 can form a supporting surface for supporting the workpiece 5; preferably, the pressing die set 2 is provided with a workpiece supporting plate 217 for supporting the workpiece 5. The workpiece supporting plate 217 can be installed on the supporting rail 212 or fixed in the first supporting groove 216.

[0073] Furthermore, a second support groove 218 is processed on the side of the movable carriage 219 facing the fixed carriage 211; the second support groove 218 extends forward and backward. During the entire process of clamping the workpiece 5 or at the end of the clamping process, the workpiece support plate 217 is located in the second support groove 218. As needed, the workpiece support plate 217 can also be directly fixed in the second support groove 218, located at the lower side of the movable clamping block 209; the workpiece support plate 217 can enter or exit the first support groove 216 as the movable carriage 219 moves; after the workpiece 5 is clamped, the workpiece support plate 217 is supported by the lower side groove wall of the first support groove 216 and the second support groove 218. The fixed connection method of the workpiece support plate 217 can be a snap-on connection, a detachable connection, etc.

[0074] The movable clamping block 209 is installed on the movable carriage 219, located on the upper side of the workpiece support plate 217, and can float up and down relative to the workpiece support plate 217; when the movable clamping block 209 moves down to the lower limit position, it can press on the clamping end 53 of the workpiece 5. Preferably, the movable clamping block 209 has an avoidance groove on the side facing the workpiece 5, and the shape of the avoidance groove is adapted to the shape of the clamping end 53 of the workpiece 5, so as to increase the clamping contact area between the movable clamping block 209 and the workpiece 5 and improve the clamping stability. For example, Figure 2 The avoidance groove of the movable clamping block 209 shown is an arc surface.

[0075] As an installation embodiment of the movable clamping block 209 and the movable carriage 219, the upper groove wall of the second support groove 218 is provided with an installation groove, which penetrates the groove wall. A clamping block mounting seat 223 is fixedly installed in the installation groove, and the two can be interference fit, or can be fixed as a whole by welding, bonding, etc. The movable clamping block 209 is installed on the clamping block mounting seat 223; wherein, the clamping block mounting seat 223 has a floating mounting hole 226, and the floating mounting hole 226 penetrates the upper and lower sides of the clamping block mounting seat 223, that is, the floating mounting hole 226 is opened on both the upper side and the lower side of the clamping block mounting seat 223; a part of the movable clamping block 209 extends from the lower end opening of the floating mounting hole 226 into the floating mounting hole 226, and is connected to the clamping block mounting seat 223 in a floating manner up and down through the floating shaft 208. The floating shaft 208 is fixedly connected to the movable clamping block 209 and moves up or down synchronously.

[0076] Furthermore, floating holes 225 are processed on the front and rear side walls of the floating mounting hole 226, and the floating holes 225 are long strip holes extending up and down; the two ends of the floating shaft 208 extend into the two floating holes 225 respectively, and the floating shaft 208 can slide up and down relative to the floating holes 225. Preferably, the end of the floating shaft 208 has a positioning plane 229, and the positioning plane 229 is located at the lower part of the floating shaft 208, and the positioning plane 229 is parallel to the upper side of the movable carriage 219; when the floating shaft 208 is at the lower limit position, the positioning plane 229 contacts and is tightly attached to the upper side of the movable carriage 219, so as to position the movable clamping block 209, and prevent the movable clamping block 209 from tilting and failing to reliably clamp the workpiece 5.

[0077] It should be noted here that the floating hole 225 can also be set on the left and right side walls of the floating mounting hole 226, which can also meet the functional requirements of the floating shaft 208.

[0078] Furthermore, a clamping block guide groove 227 is provided on the lower end surface of the floating mounting hole 226, the clamping block guide groove 227 is connected to the floating mounting hole 226, and opens on the right side surface of the clamping block mounting seat 223; the movable clamping block 209 is slidably arranged up and down in the clamping block guide groove 227, and partially extends out of the clamping block guide groove 227.

[0079] The clamping module 2 also has an elastic device 228, which is used to offset the gravity of the movable clamping block 209, maintain the movable clamping block 209 at the upper limit position, and does not affect the normal material discharge. The elastic device 228 can be set between the movable clamping block 209 and the movable slide plate 219, or between the movable clamping block 209 and the workpiece support plate 217. The elastic device 228 can be an elastic element such as a spring or an elastic rope. The elastic device 228 applies an upward force to the movable clamping block 209. When the workpiece 5 needs to be clamped, a downward thrust is applied to the upper side of the movable clamping block 209 to overcome the force of the elastic device 228 and push the movable clamping block 209 to press on the clamping end 53 of the workpiece 5.

[0080] The movable carriage 219 is fixed with an articulated seat 207, and the middle part of the pressure rod 206 is rotatably connected to the articulated seat 207. The two ends of the pressure rod 206 are respectively a driving end and an action end, wherein the action end of the pressure rod 206 extends to the clamping block mounting seat 223 and abuts against the upper side of the movable clamping block 209. Preferably, the upper end of the floating mounting hole 226 has a pressure rod guide groove 224, and the action end of the pressure rod 206 is in the pressure rod guide groove 224, and the two can slide relative to each other.

[0081] Furthermore, the action end of the pressing rod 206 that contacts the movable clamping block 209 is cam-shaped.

[0082] The pressing power assembly is used to lift the driving end of the pressing rod 206 and push the movable carriage 219 close to the fixed carriage 211; Figure 2 and Figure 3 As shown, the clamping power assembly includes a clamping pressing protrusion 202, a guide seat 221 and a clamping power component 201. The guide seat 221 is fixedly mounted on the fixed base plate 1, adjacent to the left end of the support guide rail 212 and close to the movable carriage 219. The clamping pressing protrusion 202 is slidably arranged on the guide seat 221, and the clamping pressing protrusion 202 reciprocates under the action of the clamping power component 201. The clamping and pressing down protrusion 202 has a first driving surface 203 and a second driving surface 205, wherein the first driving surface 203 cooperates with the driving end of the pressure rod 206 to lift the driving end of the pressure rod 206; the left end of the movable slide 219 has a driving platform 222, and the driving platform 222 cooperates with the second driving surface 205 to push the movable slide 219 to move to the right; at the same time, the first driving surface 203 and the second driving surface 205 cooperate with each other so that the clamping and pressing down protrusion 202 first pushes the movable slide 219 to move to the right and then lifts the driving end of the pressure rod 206.

[0083] As an implementation method of clamping and pressing the protrusion 202, Fig.10 As shown, the first driving surface 203 is arranged on the upper side of the clamping and pressing protrusion 202, which can be part of the upper side or the entire upper side; the first driving surface 203 is composed of the first static surface 232, the first moving surface 231 and the second static surface 230 connected in sequence, and the rear side of the first driving surface 203 is lower than the front side. That is, the first static surface 232 and the second static surface 230 are horizontal surfaces, the first static surface 232 is located in front of the second static surface 230 and is higher than the second static surface 230, and the first moving surface 231 connects the first static surface 232 and the second static surface 230. The second driving surface 205 is located on the right side of the clamping and pressing protrusion 202 facing the movable carriage 219, which can be part of the right side or the entire right side. The second driving surface 205 is composed of the second moving surface 234 and the third static surface 233, and the third static surface 233 is located in front of the second moving surface 234. The third stationary surface 233 is perpendicular to the moving direction of the movable carriage 219. The second moving surface 234 is an inclined surface, the front side of which is connected to the third stationary surface 233, and the rear side of which is inclined and extends to the left, that is, the distance between the front side of the second moving surface 234 and the supporting guide rail 212 is smaller than the distance between the rear side of the second moving surface 234 and the supporting guide rail 212. The clamping and pressing protrusion 202 moves forward and backward relative to the guide seat 221.

[0084] If the second moving surface 234 is located at the rear side of the first moving surface 231, when the clamping power component 201 pushes the clamping pressing protrusion 202 backward, the second moving surface 234 pushes the driving platform 222 to move rightward, and the driving platform 222 stops moving rightward after contacting the third stationary surface 233; during the movement of the driving platform 222 to the right, since the driving end of the pressing rod 206 is always in sliding contact with the second stationary surface 230, the driving end of the pressing rod 206 is not lifted. When the driving end of the pressing rod 206 slides to sliding contact with the first moving surface 231, the driving end of the pressing rod 206 is lifted until the workpiece 5 is clamped. In order to maintain the stability and reliability of the clamping action, the driving end of the pressing rod 206 is maintained in contact with the first stationary surface 232 during the clamping process.

[0085] The first driving surface 203 and the second driving surface 205 on the clamping pressing protrusion 202 are not limited to the above-mentioned embodiments, and can also be set such that in the front-to-back direction, the second moving surface 234 and the first moving surface 231 have an overlapping area; that is, at the end of the rightward movement of the driving platform 222, the driving end of the pressing rod 206 is allowed to have a set lifting stroke, as long as it does not affect the clamping of the movable clamping block 209 on the workpiece 5. Alternatively, the first driving surface 203 is only composed of the first moving surface 231.

[0086] The clamping power component 201 may be a cylinder or an electric telescopic rod. Preferably, a first driving roller 220 is rotatably mounted on the driving platform 222, and a second driving roller 204 is rotatably mounted on the driving end of the pressure rod 206. The first driving roller 220 and the second driving roller 204 are in rolling contact with the second driving surface 205 and the first driving surface 203 respectively, so the movement is smooth and the wear is small.

[0087] A support seat is provided on the support rail 212, and the support seat is adjacent to the fixed carriage 211 and is located on the side of the fixed carriage 211 away from the movable carriage 219; a fixed carriage adjustment bolt 213 is threadedly connected to the support seat, and the fixed carriage adjustment bolt 213 abuts against the side of the fixed carriage 211. The position of the fixed carriage 211 on the support rail 212 can be adjusted by the fixed carriage adjustment bolt 213 to match the bending requirements of different types of workpieces 5. As needed, the fixed carriage adjustment bolt 213 can also be rotatably connected to the fixed carriage 211, and when the fixed carriage adjustment bolt 213 is rotated, the fixed carriage 211 moves synchronously.

[0088] The structure of the first bending module 3 can be referred to Figure 1 , Figure 3 , Figure 5 , Figure 7 as well as Figure 8, including a bending crank arm 301, a height adjustment swing arm 302, a pressure wheel adjustment rod 303 and a bending pressure wheel 306. Among them, the bending crank arm 301 is rotatably mounted on the fixed base plate 1, and the fixed base plate 1 is fixedly mounted with a first bending drive component for driving the bending crank arm 301 to swing. The first bending drive component can adopt a power element such as a servo motor. Specifically, the fixed base plate 1 is provided with a crank arm swing hole 101, and the crank arm swing hole 101 passes through the upper and lower surfaces of the fixed base plate 1; the bending crank arm 301 is located in the crank arm swing hole 101, and the upper and lower ends of the bending crank arm 301 extend to the upper and lower sides of the fixed base plate 1 respectively; the lower side of the fixed base plate 1 is provided with a crank arm rotation bearing seat 102, and the bending crank arm 301 is installed on the crank arm rotation bearing seat 102 through a shaft and a bearing assembly. The first bending drive component is located on the lower side of the fixed base plate 1, and is connected to the bending crank arm 301 through a transmission structure. In this way, the overall height of the equipment can be reduced, and the space above and below the fixed base plate 1 can be fully utilized.

[0089] The height adjustment swing arm 302 is installed at the upper end of the bending arm 301, and the bending pressure wheel 306 is installed on the height adjustment swing arm 302; the height adjustment swing arm 302 can be adjusted up and down relative to the bending arm 301, thereby realizing the height adjustment of the bending pressure wheel 306. The height adjustment swing arm 302 and the bending arm 301 can be detachably connected, for example, detachably connected by connecting parts such as bolts and screws, thereby meeting the need for height adjustment of the bending pressure wheel 306; or they can be telescopically connected, for example, a telescopic hole is set at the upper end of the bending arm 301, and the height adjustment swing arm 302 is located in the telescopic hole, and is locked or unlocked by a pin shaft. Whether it is a detachable connection or a telescopic connection, it is a prior art, so it is shown in the drawings and is not described in detail in this application.

[0090] Furthermore, the bending pressure wheel 306 can adjust the left and right position relative to the height adjustment swing arm 302. Specifically, the upper end of the height adjustment swing arm 302 has an adjustment guide extending left and right, and the adjustment guide is provided with a pressure wheel adjustment rod 303 and a roller adjustment seat 305, and the roller adjustment seat 305 is fixed on the adjustment guide, and the connection method between the two can be welding, of course, it can also be bolted; the pressure wheel adjustment rod 303 is slidably installed on the adjustment guide. The roller adjustment seat 305 is threadedly connected with a roller adjustment bolt 304, and the roller adjustment bolt 304 is rotatably connected to the pressure wheel adjustment rod 303; when the roller adjustment bolt 304 is rotated, the pressure wheel adjustment rod 303 can move left and right along the adjustment guide, and maintain the rotation connection state with the roller adjustment bolt 304. The bending pressure wheel 306 is rotatably installed on the pressure wheel adjustment rod 303, and moves synchronously with the pressure wheel adjustment rod 303.

[0091] The bending arm 301 rotates around the arm rotating bearing seat 102, driving the bending pressure wheel 306 to rotate, and cooperates with the bending die 210 to achieve the first bending.

[0092] Please refer to Figure 4 , Figure 5 , Figure 7 and Figure 8 , the second bending module 4 includes a bending component and a position adjustment component for adjusting the position of the bending component. Among them, the bending component includes a bending wheel 415, a bending wheel 417, a bending auxiliary wheel 416 and a bending wheel mounting seat 413; the bending wheel mounting seat 413 is connected to the position adjustment component, and the position is adjusted under the drive of the position adjustment component. The bending wheel 415 is rotatably mounted on the bending wheel mounting seat 413, and rotates under the drive of the second bending drive component 408. For example, the second bending drive component 408 adopts a combination of a servo motor and a reducer, and the output shaft of the servo motor is connected to the reducer for transmission; the bending wheel 415 adopts a gear, and a bending driving gear 414 is fixedly mounted on the output shaft of the reducer, and the bending driving gear 414 is meshed and transmitted with the bending wheel 415.

[0093] The bending wheel 417 and the bending auxiliary wheel 416 are both fixed on the end surface of the bending rotating wheel 415, and the two are arranged at intervals, with a set gap for the part of the workpiece 5 to be bent to extend into; the size of the set gap is related to the model of the workpiece 5 to be bent. The bending auxiliary wheel 416 is coaxially arranged with the bending rotating wheel 415, and the rotation centers of the two coincide.

[0094] In order to match different types of workpieces 5, the bending wheel 417 and the bending auxiliary wheel 416 are installed on the bending wheel 415 through the bending wheel fixing block 418; that is, the bending wheel fixing block 418 is detachably connected to the end face of the bending wheel 415, and the bending wheel 417 and the bending auxiliary wheel 416 are fixed on the bending wheel fixing block 418. In this way, when needed, for example, to bend workpieces 5 of different thicknesses, the bending wheel 417 and the bending auxiliary wheel 416 can be replaced by replacing the bending wheel fixing block 418, which is simple and quick.

[0095] The position adjustment assembly includes an up and down adjustment mechanism, a front and back adjustment mechanism, and a left and right adjustment mechanism. The up and down adjustment mechanism is used to adjust the position of the bending assembly in the up and down direction, the front and back adjustment mechanism is used to adjust the front and back position of the bending assembly, and the left and right adjustment mechanism is used to adjust the position of the bending assembly in the left and right direction. The three cooperate with each other to complete the position adjustment of the bending assembly, so that the bending assembly can perform bending operations at any set position of the workpiece 5.

[0096] As an embodiment of the position adjustment component, the left and right adjustment mechanism includes a position adjustment base 404, a position adjustment guide rail 402 and a position adjustment drive component 403. A support platform 401 is fixedly arranged on the fixed base plate 1; the position adjustment guide rail 402 and the position adjustment drive component 403 are installed on the support platform 401, wherein the position adjustment guide rail 402 is fixed on the upper side of the support platform 401, and the position adjustment drive component 403 is fixed on the right end of the support platform 401. The position adjustment base 404 is slidably installed on the position adjustment guide rail 402; the position adjustment drive component 403 can adopt a combination of a motor, a reducer and a lead screw, the reducer transmission connects the motor and the lead screw, and the lead screw is used to drive the position adjustment base 404 to move. The combination of the motor, the reducer and the lead screw is a prior art, and its connection relationship, specific structure, etc. are not described here.

[0097] Preferably, the support platform 401 is tilted, and the angle between the support surface of the support platform 401 and the fixed base plate 1 is set according to the commonly used bending angle of the first bending portion 51 of the workpiece 5; exemplarily, the commonly used bending angle of the first bending portion 51 is 95°, and the angle between the support surface of the support platform 401 and the fixed base plate 1 is set to 5°. After the first bending portion 51 is bent, the extension direction of the free extension part of the workpiece 5 is parallel to the support surface of the support platform 401; the adjustment action can be reduced.

[0098] The front-to-back adjustment mechanism includes a forward guide base 406, a forward guide rail 405 and a forward drive component 407; the forward guide rail 405 and the forward drive component 407 are installed on the position adjustment base 404; the forward guide base 406 is slidably set on the forward guide rail 405, and the forward drive component 407 can adopt a cylinder, and the telescopic rod of the cylinder is fixedly connected to the forward guide base 406. Under the action of the forward drive component 407, the forward guide base 406 moves forward and backward along the forward guide rail 405.

[0099] The up-and-down adjustment mechanism includes a height adjustment seat 410 and a bending wheel height adjustment bolt 409; specifically, the height adjustment seat 410 is fixedly connected to the forward guide base 406; the two can be detachably connected by bolts. A vertically extending height adjustment guide groove 411 is provided on the height adjustment seat 410, and a bending wheel mounting seat 413 is slidably arranged in the height adjustment guide groove 411; the bending wheel height adjustment bolt 409 is threadedly connected to the upper groove wall of the height adjustment guide groove 411, and the lower end of the bending wheel height adjustment bolt 409 extends into the height adjustment guide groove 411 and is connected to the bending wheel mounting seat 413 through a connecting block 412; by rotating the bending wheel height adjustment bolt 409, the bending wheel mounting seat 413 can be driven to rise or fall.

[0100] The bending wheel mounting seat 413 and the height adjustment seat 410 are connected by bolts. In order to adapt to the up and down position adjustment of the bending wheel mounting seat 413, the height adjustment seat 410 is processed with a long strip of bolt mounting holes corresponding to the bolt position, rather than circular holes; in this way, the bolts can move in the bolt mounting holes during the adjustment process.

[0101] Working process of bending device:

[0102] Place the workpiece 5 to be bent into the first bending die groove 215 of the bending die 210. The bending die 210 can be replaced according to the diameter of the workpiece 5.

[0103] The clamping power component 201 is actuated to push the clamping pressing protrusion 202 to actuate; the second moving surface 234 is located at the rear side of the first moving surface 231, that is, the first driving roller 220 first pushes the movable carriage 219 to the right under the action of the second moving surface 234, and after reaching the position, the first driving roller 220 contacts the third stationary surface 233, and no longer pushes the movable carriage 219 to move to the right; then the second driving roller 204 moves upward under the action of the first moving surface 231, and correspondingly, the action end of the pressure rod 206 moves downward, and the movable clamping block 209 is pushed downward to clamp the workpiece 5;

[0104] The bending arm 301 is controlled to rotate, and the bending pressure wheel 306 contacts and presses down the workpiece 5, so that the workpiece 5 is bent for the first time. The bending angle can be changed by adjusting the amplitude of the bending arm 301;

[0105] After the first bending is completed, the bending wheel mounting seat 413 moves forward, and the bending auxiliary wheel 416 and the bending wheel 417 are located at the position where the workpiece 5 is to be bent; after being in place, the free extension part of the workpiece 5 is located between the bending auxiliary wheel 416 and the bending wheel 417;

[0106] The second bending driving component 408 is controlled to drive the bending wheel 415 to rotate, the bending auxiliary wheel 416 is stationary at the center of the bending wheel 415, and the bending wheel 417 rotates with the bending wheel 415 to bend the workpiece 5; the bending position can be adjusted according to product requirements, and bending can be performed at multiple positions of the workpiece 5;

[0107] After the bending is completed, the bending wheel mounting seat 413 is reset to provide operating space for the bending operation of the next workpiece 5 .

[0108] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bending device for bending a workpiece (5); characterized in that: It comprises a pressing module (2), a first bending module (3) and a second bending module (4); The clamping module (2) clamps and positions the workpiece (5); The first bending module (3) performs a first bending on the workpiece (5); The second bending module (4) bends the free extension portion of the workpiece (5) after the first bending. The pressing module (2) comprises a fixed drag plate (211), a movable drag plate (219), a movable clamping block (209), a pressing rod (206), a pressing power assembly and an elastic device (228); The fixed carriage (211) and the movable carriage (219) are arranged in parallel, and the movable carriage (219) can move closer to or away from the fixed carriage (211); A bending mold (210) is provided on the side of the fixed carriage (211) facing the movable carriage (219); The movable clamping block (209) is arranged on a side of the movable carriage (219) close to the fixed carriage (211), and can move up and down relative to the movable carriage (219); The elastic device (228) exerts an upward force on the movable clamping block (209); The pressure rod (206) is hinged to the movable carriage (219), and the action end of the pressure rod (206) abuts against the upper side of the movable clamping block (209); The clamping power assembly is used to drive the driving end of the pressure rod (206) to lift up and press down the movable clamping block (209), and to drive the movable carriage (219) to approach the fixed carriage (211).

2. A bending device according to claim 1, characterized in that: The pressing module (2) comprises a supporting guide rail (212), and the fixed carriage (211) and the movable carriage (219) are both slidably arranged on the upper side of the supporting guide rail (212); a fixed carriage adjustment bolt (213) for adjusting the position of the fixed carriage (211) is provided on the supporting guide rail (212); And / or, the bending die (210) is detachably fixed on the fixed carriage (211); And / or, the bending die (210) has a first bending die groove (215); And / or, the side of the movable clamping block (209) facing the fixed carriage (211) has an avoidance groove; And / or, the action end of the pressure rod (206) in contact with the movable clamping block (209) is cam-shaped.

3. A bending device according to claim 1, characterized in that: The clamping module (2) comprises a workpiece support plate (217); a first support groove (216) and a second support groove (218) are respectively processed on the opposite sides of the fixed slide plate (211) and the movable slide plate (219); the workpiece support plate (217) is located in the second support groove (218) and the first support groove (216) and is located at the lower side of the movable clamping block (209).

4. A bending device according to claim 3, characterized in that: The elastic device (228) is arranged between the movable clamping block (209) and the workpiece supporting plate (217).

5. A bending device according to claim 3, characterized in that: The upper groove wall of the second supporting groove (218) is provided with a clamping block mounting seat (223); the clamping block mounting seat (223) has a floating mounting hole (226), and the floating mounting hole (226) passes through the upper and lower side surfaces of the clamping block mounting seat (223); a part of the movable clamping block (209) extends into the floating mounting hole (226) from the lower end opening of the floating mounting hole (226), and is slidably connected to the clamping block mounting seat (223) up and down through a floating shaft (208).

6. A bending device according to claim 5, characterized in that: Floating holes (225) are processed on two opposite side walls of the floating installation hole (226), and the floating holes (225) are long strip holes extending up and down; the two ends of the floating shaft (208) extend into the two floating holes (225) respectively, and the floating shaft (208) can slide up and down relative to the floating holes (225); And / or, the end of the floating shaft (208) has a positioning plane (229), and when the floating shaft (208) is at the lower limit position, the positioning plane (229) can position the movable clamping block (209); And / or, a clamping block guide groove (227) is provided on the lower end surface of the floating mounting hole (226), the clamping block guide groove (227) is communicated with the floating mounting hole (226), and is open on the right side surface of the clamping block mounting seat (223); the movable clamping block (209) is slidably arranged in the clamping block guide groove (227) up and down, and partially protrudes out of the clamping block guide groove (227); And / or, the upper end of the floating mounting hole (226) has a pressure rod guide groove (224), and the active end of the pressure rod (206) is located in the pressure rod guide groove (224) and can slide relative to the pressure rod guide groove (224).

7. A bending device according to claim 1, characterized in that: The clamping power assembly comprises a clamping and pressing protrusion (202), a guide seat (221) and a clamping power component (201); the clamping and pressing protrusion (202) is slidably arranged on the guide seat (221) and reciprocates under the action of the clamping power component (201); The clamping and pressing protrusion (202) has a first driving surface (203) and a second driving surface (205), wherein the first driving surface (203) cooperates with the driving end of the pressure rod (206) to lift the driving end of the pressure rod (206); the left end of the movable slide (219) has a driving platform (222), and the driving platform (222) cooperates with the second driving surface (205) to push the movable slide (219) to move rightward; at the same time, the clamping and pressing protrusion (202) first pushes the movable slide (219) to move rightward, and then lifts the driving end of the pressure rod (206).

8. A bending device according to claim 7, characterized in that: The first driving surface (203) is arranged on the upper side surface of the clamping and pressing protrusion (202), and the second driving surface (205) is located on the right side surface of the clamping and pressing protrusion (202) facing the movable carriage (219); the clamping and pressing protrusion (202) moves forward and backward relative to the guide seat (221); And / or, the first driving surface (203) comprises a first stationary surface (232), a first moving surface (231), and a second stationary surface (230) which are connected in sequence; the first stationary surface (232) and the second stationary surface (230) are horizontal surfaces, the first stationary surface (232) is located in front of the second stationary surface (230) and is higher than the second stationary surface (230), and the first moving surface (231) connects the first stationary surface (232) and the second stationary surface (230); And / or, the second driving surface (205) comprises a second moving surface (234) and a third stationary surface (233); the third stationary surface (233) is located at the front side of the second moving surface (234), the third stationary surface (233) is perpendicular to the direction in which the movable carriage (219) moves closer to the fixed carriage (211), the front side of the second moving surface (234) is connected to the third stationary surface (233), and the rear side extends obliquely to the left; And / or, a first driving roller (220) is rotatably mounted on the driving platform (222), a second driving roller (204) is rotatably mounted on the driving end of the pressure rod (206), and the first driving roller (220) and the second driving roller (204) are in rolling contact with the second driving surface (205) and the first driving surface (203) respectively.

9. A bending device according to claim 1, characterized in that: The first bending module (3) comprises a bending arm (301), a first bending drive component and a bending pressure wheel (306); the bending arm (301) is driven by the first bending drive component to swing, thereby driving the bending pressure wheel (306) to approach the workpiece (5) for bending or to move away from the workpiece (5) for reset.

10. A bending device according to claim 1, characterized in that: The second bending module (4) comprises a bending component and a position adjustment component; The bending assembly comprises a bending wheel mounting seat (413), a bending rotating wheel (415), a bending auxiliary wheel (416), a bending wheel (417) and a second bending driving component (408); The bending wheel mounting seat (413) is connected to the position adjustment component, and the position of the bending operation is adjusted under the drive of the position adjustment component; The bending wheel (415) is rotatably mounted on the bending wheel mounting seat (413), and is driven to rotate by the second bending driving component (408); The bending wheel (417) and the bending auxiliary wheel (416) are both fixed on the end surface of the bending rotating wheel (415), with a gap therebetween for accommodating the workpiece (5); the bending auxiliary wheel (416) is coaxially arranged with the bending rotating wheel (415).

11. A bending device according to claim 10, characterized in that: The bending wheel (417) and the bending auxiliary wheel (416) are detachably mounted on the bending rotating wheel (415) via a bending wheel fixing block (418).

12. A bending device according to claim 10, characterized in that: The position adjustment assembly comprises a left-right adjustment mechanism for adjusting the position of the bending assembly in the left-right direction; the left-right adjustment mechanism comprises a position adjustment base (404), a position adjustment guide rail (402) and a position adjustment driving component (403); the position adjustment base (404) is slidably mounted on the position adjustment guide rail (402), and the position adjustment driving component (403) drives the position adjustment base (404) to slide along the position adjustment guide rail (402); the bending wheel mounting seat (413) is connected to the position adjustment base (404) and moves synchronously left and right; And / or, the position adjustment component includes a front-to-back adjustment mechanism for adjusting the position of the bending component in the front-to-back direction; the front-to-back adjustment mechanism includes a forward guide base (406), a forward guide rail (405) and a forward driving component (407); the forward guide base (406) is slidably arranged on the forward guide rail (405), and under the action of the forward driving component (407), the forward guide base (406) moves forward and backward along the forward guide rail (405); the bending wheel mounting seat (413) is connected to the forward guide base (406) and moves forward and backward synchronously.

13. A bending device according to claim 12, characterized in that: The position adjustment assembly comprises an up-and-down adjustment mechanism for adjusting the position of the bending assembly in the up-and-down direction; the up-and-down adjustment mechanism comprises a height adjustment seat (410) and a bending wheel height adjustment bolt (409); a vertically extending height adjustment guide groove (411) is provided on the height adjustment seat (410); the bending wheel height adjustment bolt (409) is threadedly connected to an upper groove wall of the height adjustment guide groove (411); the lower end of the bending wheel height adjustment bolt (409) extends into the height adjustment guide groove (411) and is connected to the bending wheel mounting seat (413); the bending wheel mounting seat (413) is driven to rise or fall by rotating the bending wheel height adjustment bolt (409).

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