Automatic conveying and feeding equipment of full-automatic straightening machine

Abstract

The invention relates to the technical field of conveying and feeding, in particular to a full-automatic straightening machine automatic conveying and feeding device which comprises a base, a straightening machine and a conveying unit intermittently conveying workpieces rightwards are installed at the upper end of the base, a straightening unit is installed on the conveying unit, and two clamping units symmetrically arranged front and back are installed between the base and the straightening machine. Before the workpiece is conveyed to the straightening machine, the workpiece is straightened front and back through the arranged straightening plate, the workpiece is prevented from being in an inclined state on the horizontal plane, and the axis of the workpiece and the axis of the tip are completely collinear in the front-back direction; according to the centering clamping device, the arc-shaped clamping plate and the supporting set are arranged to be matched to conduct centering clamping on the end of the workpiece, it is guaranteed that the axis of the workpiece and the axis of the center are completely collinear in the front-back direction, then it is guaranteed that the center clamping part of the straightening machine conducts accurate centering clamping on the workpiece, and the straightening precision of the workpiece is improved.

Description

Technical Field

[0001] The invention relates to the technical field of conveying and feeding, in particular to automatic conveying and feeding equipment for a full-automatic straightening machine. Background Art

[0002] Rods and shaft parts (hereinafter collectively referred to as "workpieces") will inevitably bend and deform during rolling, forging, heat treatment or machining. Straightening is a key process to ensure the straightness, roundness and other geometric tolerances of the workpiece to meet the requirements of subsequent processing or assembly. The straightening machine is the core equipment to realize this process. It mainly clamps the end of the workpiece through the centering clamp and drives the workpiece to rotate, so that the straightening machine can detect the bent part of the workpiece, and then apply external force to make the workpiece produce reverse plastic deformation to offset the original bend. The straightening processing efficiency and accuracy of the straightening machine directly affect the product quality and production cost.

[0003] The existing workpiece loading method of the straightening machine is mainly to load the workpiece through two conveyor plates that make a circular motion. There are multiple V-shaped grooves on the conveyor plates. The conveyor plates move upward first, so that the V-shaped grooves of the conveyor plates lift the corresponding workpieces on the material rack, and then the conveyor plates carry the workpieces and move toward the straightening machine. Then the conveyor plates move downward, so that the workpieces are separated from the V-shaped grooves of the conveyor plates and fall on the material rack again. Finally, the conveyor plates return to their initial position, thereby realizing intermittent rightward conveying of the workpieces.

[0004] However, the following problems exist when loading the workpiece: when the existing conveyor plate is conveying the workpiece, due to the bending deformation of the workpiece, the workpiece may be unevenly supported and skewed because one conveyor plate supports the bent part of the workpiece and the other conveyor plate supports the unbent part of the workpiece. When the skewed workpiece is loaded onto the straightening machine, it cannot be ensured that the workpiece and the straightening machine are centered, which makes it difficult to accurately center and clamp the workpiece with the top. At the same time, when the top clamps the workpiece, the workpiece may slide or flip and leave the straightening machine, requiring manual shutdown and re-placement of the workpiece. This not only reduces the straightening efficiency of the workpiece, but also affects the clamping stability due to clamping deviation caused by manual placement, thereby affecting the straightening effect of the workpiece. Summary of the invention

[0005] To solve the above technical problems, the present invention adopts the following technical solutions. An automatic feeding device for a full-automatic straightening machine includes a base. A straightening machine and a conveying unit for intermittently conveying workpieces to the right are installed at the upper end of the base. A rectifying unit is installed on the conveying unit. Two clamping units arranged symmetrically front and back are installed between the base and the straightening machine. The conveying unit includes two conveying plates arranged front and back and moving along a circular track. The rectifying unit includes a pressing group installed on the front and back sides of the conveying plate. The pressing group is located on the left side of the straightening machine. Two rectifying plates arranged symmetrically left and right are installed on the pressing group. A positioning group is installed on the upper left side of the base. When the conveying plate drives the workpiece to move upward, the pressing group first drives the two rectifying plates to elastically clamp the workpiece, and then the positioning group arranges the workpiece to be centered front and back. A matching group is also installed on the base. When the conveying plate drives the workpiece to move to the right, the matching group and the pressing group cooperate to drive the rectifying plates to rectify the workpiece front and back. The clamping unit includes a supporting group installed on the base, a driving member arranged on the straightening machine, and a fixing plate with a wavy groove. An arc-shaped clamping plate is arranged on the driving member. The driving member drives the arc-shaped clamping plate to move downward and cooperate with the supporting group to clamp the end of the workpiece, and the driving member also cooperates with the wavy groove to drive the arc-shaped clamping plate to reciprocate left and right, ensuring that the workpiece and the arc-shaped clamping plate are coaxial in the front and back directions.

[0006] Preferably, a driving member is connected between the lower side of the conveying plate and the base. The circular movement of the conveying plate is realized through the driving member. A plurality of V-shaped grooves are evenly arranged left and right on the conveying plate. The installation position of the pressing group corresponds to the V-shaped groove closest to the left side of the straightening machine.

[0007] Preferably, the positioning group includes two L-shaped plates arranged symmetrically front and back and slidingly installed on the base front and back. The conveying unit is located between the two L-shaped plates. A top extension spring is connected between the L-shaped plate and the base. Opposite sides of the horizontal sections of the two L-shaped plates are fixedly installed with positioning plates. Inclined surfaces are provided at the lower parts of the opposite sides of the two positioning plates.

[0008] Preferably, the pressing group includes two elastic reset rods arranged left and right and fixedly installed on the conveying plate. A sliding plate is slidably installed on the two elastic reset rods together. The sliding plate is initially in contact with the conveying plate. The upper side of the sliding plate is slidably connected to the two corresponding rectifying plates left and right. A pressing spring is connected between the rectifying plate and the sliding plate.

[0009] Preferably, a matching column block is fixedly installed at the lower end of the sliding plate. The matching group includes a matching plate distributed below the conveying plate. The left side of the matching plate is set as a trapezoidal structure. The inclined surface of the trapezoidal structure of the matching plate is in contact with the corresponding matching column block. The lower side of the matching plate is connected to the base through two connecting plates arranged symmetrically front and back. The connecting plates are set as elastic telescopic structures.

[0010] Preferably, the upper ends of the opposite sides of the left and right straightening plates are both arranged as inclined surfaces, and a plurality of first balls are movably installed at the lower ends of the opposite sides of the left and right straightening plates.

[0011] Preferably, the support group includes an adjustment plate arranged above the base. The left side of the adjustment plate is connected to the base through a guide rod and slides up and down. The right side of the adjustment plate is threadedly connected with an adjustment screw rod, and the adjustment screw rod is rotatably connected to the base. The upper side of the adjustment plate is provided with an arc-shaped support plate through a plurality of elastic support rods.

[0012] Preferably, a plurality of second balls are installed on the inner arc surface of the arc-shaped clamping plate, and a plurality of third balls are installed on the inner arc surface of the arc-shaped support plate.

[0013] Preferably, the driving member includes an electric push rod arranged on the straightening machine. The lower end of the electric push rod is fixedly installed with a transmission plate. A reciprocating plate is slidably installed on the lower side of the transmission plate in the left-right direction. The lower side of the reciprocating plate is connected to the corresponding arc-shaped clamping plate through a plurality of elastic pressing rods.

[0014] Preferably, two fixing plates arranged symmetrically in the front-rear direction are fixedly installed on the lower side of the transmission plate. A square plate is fixedly installed on the upper side of the arc-shaped clamping plate. Matching rods are fixedly installed at both the front and rear ends of the square plate, and the matching rods are slidably installed in the corresponding wave-shaped holes.

[0015] The beneficial effects of the present invention are as follows: 1. Before the workpiece is conveyed to the straightening machine, the present invention straightens the workpiece before and after through the provided straightening plates, preventing the workpiece from being skewed in the horizontal plane, so that the axis of the workpiece and the axis of the center point are completely collinear in the front-rear direction. When the workpiece is conveyed to the straightening machine, the present invention cooperates with the arc-shaped clamping plate and the support group to centeringly clamp the end of the workpiece, ensuring that the axis of the workpiece and the axis of the center point are completely collinear in the front-rear direction, thereby ensuring that the center point clamping part of the straightening machine accurately centeringly clamps the workpiece and improving the straightening accuracy of the workpiece.

[0016] 2. When the conveying plate drives the workpiece to move upward, the present invention makes the workpiece centered in the front-rear direction through the provided alignment group. Then, when the conveying plate conveys the workpiece to the straightening machine, the workpiece and the straightening machine can be centered in the front-rear direction. In this way, when the center point clamping part clamps the workpiece, the position stability of the workpiece is ensured, and then the straightening processing efficiency of the workpiece is ensured.

[0017] 3. When the arc-shaped clamping plate and the arc-shaped support plate clamp the workpiece, the present invention drives the arc-shaped clamping plate to reciprocate left and right through the cooperation of the wave-shaped groove and the matching rod, further ensuring that the arc-shaped clamping plate can cooperate with the arc-shaped support plate to centeringly clamp the end of the workpiece, thereby further ensuring that the center point clamping part accurately centeringly clamps the workpiece. Description of the Drawings

[0018] The present invention will be further described below with reference to the drawings and embodiments.

[0019] Figure 1 is a schematic three-dimensional structure diagram of the present invention.

[0020] Figure 2 is a schematic three-dimensional structure diagram of the present invention after removing a part of the gantry.

[0021] Figure 3 is a schematic three-dimensional structure diagram of a part of the structure of the present invention.

[0022] Figure 4 is a schematic three-dimensional structure diagram of the conveying plate, sliding plate and straightening plate of the present invention.

[0023] Figure 5 is a schematic three-dimensional structure diagram of the straightening plate, abutting spring, elastic reset rod and sliding plate of the present invention.

[0024] Figure 6 is a plan view of the mating column block and mating plate of the present invention.

[0025] Figure 7 is a schematic three-dimensional structure diagram of the reciprocating plate, elastic abutting rod, mating rod and fixing plate of the present invention.

[0026] Figure 8 is a schematic three-dimensional structure diagram of the arc-shaped support plate and ball three of the present invention.

[0027] Reference numerals: 1, base; 11, alignment group; 111, L-shaped plate; 112, top extension spring; 113, alignment plate; 12, mating group; 121, mating plate; 122, connecting frame plate; 13, material rack group; 2, straightening machine; 21, top clamping part; 22, gantry; 23, detection and straightening part; 24, elastic support part; 3, conveying unit; 31, conveying plate; 32, driving part; 321, hydraulic cylinder assembly; 322, electric slider assembly; 323, mounting plate; 4, straightening unit; 41, abutting group; 411, elastic reset rod; 412, sliding plate; 413, abutting spring; 414, mating column block; 42, straightening plate; 421, ball one; 5, clamping unit; 51, support group; 511, adjusting plate; 512, guide rod; 513, adjusting screw; 514, elastic support rod; 515, arc-shaped support plate; 516, ball three; 52, driving part; 521, electric push rod; 522, transmission plate; 523, reciprocating plate; 524, elastic abutting rod; 525, fixing plate; 53, clamping plate; 531, ball two; 532, square plate; 533, mating rod. Detailed implementation manners

[0028] The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. For those without specific technical or conditions noted in the embodiments, the techniques or conditions described in the literature in this field or according to the product specifications shall be followed.

[0029] Referring to Figure 1 , Figure 2 and Figure 3 , an automatic feeding equipment for a full-automatic straightening machine, comprising a base 1, two sets of symmetrically arranged rack groups 13 on the left and right. In the middle of the upper end of the base 1, a straightening machine 2 is installed. A conveying unit 3 for intermittently conveying workpieces to the right is installed on the base 1. A rectifying unit 4 is installed on the conveying unit 3. Two symmetrically arranged clamping units 5 are jointly installed between the base 1 and the straightening machine 2. A positioning group 11 is installed on the left side of the upper end of the base 1; the rack group 13 includes two symmetrically arranged racks front and back. A plurality of V-shaped material grooves are evenly arranged left and right on the racks. The racks are fixedly connected to the upper end of the base 1 through a connecting frame.

[0030] Referring to Figure 1 , Figure 2 and Figure 3 , the conveying unit 3 includes two conveying plates 31 arranged front and back and moving along a circular track. A driving member 32 is connected between the lower side of the conveying plate 31 and the base 1. The circular movement of the conveying plate 31 is realized through the driving member 32. A plurality of V-shaped grooves are evenly arranged left and right on the conveying plate 31. When the conveying plate 31 is in the initial position, the V-shaped grooves correspond to the V-shaped material grooves one by one.

[0031] Referring to Figure 1 , Figure 2 and Figure 3 , it should be noted that the straightening machine 2 adopts the existing technology, which includes a top clamping part 21, a gantry 22, a detection and straightening part 23 and an elastic support part 24. The top clamping parts 21 are symmetrically arranged front and back and are used for centering and clamping the workpiece and driving the workpiece to rotate. The detection and straightening part 23 is used for detecting the bent part of the workpiece and straightening the workpiece. The elastic support part 24 is used for providing elastic support to the lower side of the workpiece.

[0032] Referring to Figure 4 , it should be noted that the driving member 32 in the present invention adopts the existing technology, including a hydraulic cylinder assembly 321, an electric slider assembly 322 and a mounting plate 323. The hydraulic cylinder assembly 321 is used to drive the conveying plate 31 to move up and down through the electric slider assembly 322 and the mounting plate 323. The electric slider assembly 322 drives the conveying plate 31 to move left and right through the mounting plate 323. By controlling the hydraulic cylinder assembly 321 and the electric slider assembly 322, the conveying plate 31 is driven to move along a circular track.

[0033] The present invention is used for automatically loading workpieces. The present invention can align (position calibrate) shaft-like workpieces to prevent them from skewing, ensuring that the axis of the workpiece and the axis of the center in the center clamping portion 21 are completely collinear in the front-back direction; when the workpiece is conveyed to the corresponding position of the center clamping portion 21, the present invention can also center and clamp the end of the workpiece, thereby ensuring that the center clamping portion 21 accurately centers and clamps the workpiece, ensuring the straightening accuracy of the workpiece. At the same time, the present invention can also center and align the shaft-like workpieces, thereby preventing the workpiece from disengaging from the elastic support portion 24 and ensuring the processing quality of the workpiece.

[0034] Refer to Figures 1 to 4 , specifically, place the workpiece in the V-shaped trough at the leftmost side of the left material rack, and then start the driving member 32 to drive the conveying plate 31 to perform a loop movement. The conveying plate 31 first moves upward so that the V-shaped trough of the conveying plate 31 can lift the workpiece in the corresponding V-shaped trough, and then the conveying plate 31 drives the workpiece to move rightward for a certain distance. The conveying plate 31 drives the workpiece to move rightward to the next corresponding V-shaped trough, and then the conveying plate 31 drives the workpiece to move downward. When the workpiece moves to the corresponding V-shaped trough, the workpiece moves out of the V-shaped trough and falls into the V-shaped trough. Finally, the conveying plate 31 moves leftward to the initial position, realizing that the conveying plate 31 drives the workpiece to move intermittently rightward, so that the conveying plate 31 feeds the workpieces one by one to the elastic support portion 24, and then the subsequent straightening machine 2 can straighten and process the workpieces.

[0035] When the conveying plate 31 drives the workpiece to move upward, under the action of the alignment group 11, the workpiece is centered front and back. When the V-shaped trough on the left side of the elastic support portion 24 on the conveying plate 31 drives the workpiece to move rightward, the straightening unit 4 can straighten the workpiece front and back. Thus, when the conveying plate 31 drives the workpiece to move to the elastic support portion 24, the workpiece is in a non-skewed state. When the workpiece is loaded onto the elastic support portion 24, the control clamping unit 5 centers and clamps the end of the workpiece to ensure that the center clamping portion 21 centers and clamps the workpiece. After the workpiece straightening process is completed, the conveying plate 31 can convey the workpiece on the elastic support portion 24 rightward to the V-shaped trough at the leftmost side of the right material rack group 13, completing the intermittent rightward movement of the workpiece after the straightening process, and then realizing the continuous straightening process of the workpiece.

[0036] Refer to Figure 1 、 Figure 2 and Figure 3 , the alignment group 11 includes two symmetrically arranged L-shaped plates 111 that are slidably mounted back and forth on the base 1. The L-shaped plates 111 are located to the left of the center clamping portion 21, and the conveying unit 3 is located between the two L-shaped plates 111. A top spring 112 is connected between the L-shaped plates 111 and the base 1. Alignment plates 113 are fixedly mounted on the opposite sides of the horizontal sections of the two L-shaped plates 111, and inclined surfaces are provided at the lower parts of the opposite sides of the two alignment plates 113.

[0037] The alignment group 11 is used to center the workpiece horizontally; specifically, when the conveying plate 31 drives the workpiece to move upward, the end of the workpiece can contact the inclined surface of the corresponding alignment plate 113, and cooperate with the inclined surface to move the alignment plate 113 in the direction away from each other. The alignment plate 113 compresses the corresponding top spring 112 through the L-shaped plate 111. At the same time, the two alignment plates 113 elastically squeeze the workpiece in the direction close to each other under the action of the corresponding top spring 112, ensuring that the workpiece and the base 1 are centered horizontally. When the conveying plate 31 conveys the workpiece onto the elastic support portion 24 and the tip clamping portion 21 performs centering clamping on the workpiece, since the workpiece, the base 1, and the gantry 22 are centered horizontally at this time, that is, the distances between the two ends of the workpiece and the corresponding tip clamping portion 21 are equal, the tip clamping portion 21 will not push the workpiece horizontally when performing centering clamping, and the workpiece can be prevented from separating from the elastic support portion 24.

[0038] Refer to Figure 1 、 Figure 3 and Figure 4 As shown in FIGS.

[0039] The aligning unit 4 is used to align the workpiece horizontally; specifically, when the conveying plate 31 moves upward, the conveying plate 31 drives the aligning plate 42 to move upward through the abutting group 41. When the aligning plate 42 moves to the position of the workpiece, the abutting group 41 drives the two corresponding aligning plates 42 to elastically clamp on both sides of the workpiece. Then the conveying plate 31 drives the workpiece to move upward again. When the conveying plate 31 drives the workpiece to move to the right, the cooperating group 12 and the abutting group 41 cooperate to drive the aligning plate 42 to align the workpiece horizontally. When the conveying plate 31 conveys the workpiece onto the elastic support portion 24, the end of the workpiece remains in a state of being exactly aligned with the tip clamping portion 21 (i.e., non-deviated state). At this time, the axis of the workpiece and the axis of the tip in the tip clamping portion 21 are completely collinear in the horizontal direction, ensuring that the tip clamping portion 21 can perform accurate centering clamping on the workpiece, thereby ensuring the straightening processing accuracy of the workpiece.

[0040] Refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 5, the pressing group 41 includes two elastic reset rods 411 arranged left and right and fixedly installed on the conveying plate 31. A sliding plate 412 is slidably installed on the two elastic reset rods 411. The sliding plate 412 is initially in contact with the conveying plate 31. The upper side of the sliding plate 412 is slidably connected to the corresponding two aligning plates 42 left and right. A pressing spring 413 is connected between the aligning plate 42 and the sliding plate 412. The upper ends of the opposite sides of the left and right two aligning plates 42 are both arranged as inclined surfaces, and a plurality of first balls 421 are movably installed at the lower ends of the opposite sides of the left and right two aligning plates 42.

[0041] Refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , a mating column block 414 is fixedly installed at the lower end of the sliding plate 412; the mating group 12 includes a mating plate 121 distributed below the conveying plate 31. The left side of the mating plate 121 is arranged as a trapezoidal structure. The inclined surface of the mating plate 121 is in contact with the corresponding mating column block 414. The lower side of the mating plate 121 is connected to the base 1 through two connecting plates 122 arranged symmetrically front and back. The connecting plate 122 is arranged as an elastic telescopic structure. The telescopic section of the connecting plate 122 is fixedly connected to the lower end of the mating plate 121, and the fixed section is fixedly connected to the upper end of the base 1; the mating plate 121 is located between the electric slider assembly 322 and the mounting plate 323, and the mating plate 121 is in contact with the electric slider assembly 322.

[0042] The pressing group 41 is used to drive the aligning plate 42 to elastically clamp the workpiece, and the mating group 12 is used to cooperate with the pressing group 41 to drive the aligning plate 42 to align the workpiece back and forth; specifically, when the conveying plate 31 moves upward, the conveying plate 31 finally drives the aligning plate 42 to move upward through the elastic reset rod 411 and the sliding plate 412. When the aligning plate 42 moves upward and contacts the workpiece and continues to move upward, the workpiece will cooperate with the inclined surfaces of the left and right two aligning plates 42 to push the two aligning plates 42 to move away from each other, and the two aligning plates 42 will be elastically clamped on the left and right sides of the workpiece under the elastic force of the pressing spring 413.

[0043] When the conveying plate 31 drives the workpiece to move rightward, the conveying plate 31 drives the sliding plate 412 to move rightward through the elastic reset rod 411. The sliding plate 412 drives the mating column block 414 to move rightward. When the mating column block 414 continues to move rightward after contacting the inclined surface of the mating plate 121, the two mating column blocks 414 will move away from each other. The mating column block 414 then drives the corresponding sliding plate 412 to move away from each other. The sliding plate 412 moves along the elastic reset rod 411 and causes the elastic reset rod 411 to generate a resilience force. The sliding plate 412 then drives the aligning plate 42 to move in the front - and - back direction along the workpiece, thereby aligning the workpiece front - and - back. The first ball 421 can reduce the frictional force between the aligning plate 42 and the workpiece, enabling the aligning plate 42 to move smoothly along the workpiece. Thus, when the conveying plate 31 conveys the workpiece to the elastic support portion 24, the end of the workpiece remains in a state of being exactly opposite to the tip clamping portion 21 (i.e., a non - skewed state), ensuring that the tip clamping portion 21 can accurately center - clamp the workpiece; under the action of the connecting plate 122 which is an elastic telescopic structure, the mating plate 121 can move up and down synchronously with the conveying plate 31.

[0044] When the conveying plate 31 moves leftward to the initial position, the conveying plate 31 drives the sliding plate 412 to move leftward to the initial position through the elastic reset rod 411. The sliding plate 412 drives the mating column block 414 to move leftward to the initial position. At the same time, the sliding plate 412 moves toward each other to the initial position under the action of the elastic reset rod 411.

[0045] Refer to Figure 1 and Figure 2 , the clamping unit 5 includes a support group 51 installed on the base 1 and a driving member 52 arranged on the straightening machine 2. An arc - shaped clamping plate 53 is installed on the driving member 52. The driving member 52 drives the arc - shaped clamping plate 53 and the support group 51 to cooperate to clamp the end of the workpiece. The driving member 52 can also drive the arc - shaped clamping plate 53 to reciprocate left and right to ensure that the workpiece and the arc - shaped clamping plate 53 are centered and aligned. The rack group 13 is located between the front and rear support groups 51, and the clamping unit 5 is located between the symmetric tip clamping portions 21.

[0046] Refer to Figures 1 to 4 , the clamping unit 5 is used to clamp the end of the workpiece; specifically, when the conveying plate 31 conveys the workpiece to the elastic support portion 24, at this time, the support group 51 can support the lower side of the workpiece. Then, the driving member 52 is started to drive the arc - shaped clamping plate 53 to move downward. The arc - shaped clamping plate 53 and the support group 51 cooperate to clamp the end of the workpiece, and the driving member 52 can also drive the arc - shaped clamping plate 53 to reciprocate left and right to ensure that the workpiece and the arc - shaped clamping plate 53 are centered and aligned, further ensuring that the tip clamping portion 21 accurately centers and clamps the workpiece and improving the straightening accuracy of the workpiece.

[0047] Refer to Figure 2 , Figure 3 ,Figure 7 and Figure 8 , the support group 51 includes an adjustment plate 511 arranged above the base 1. The left side of the adjustment plate 511 is slidably connected to the base 1 up and down through a guide rod 512 (the guide rod 512 is fixedly connected to the base 1 and slidably connected to the adjustment plate 511). The right side of the adjustment plate 511 is threadedly connected to an adjustment screw 513, and the adjustment screw 513 is rotatably connected to the base 1. The upper side of the adjustment plate 511 is provided with an arc-shaped support plate 515 through a plurality of elastic support rods 514. A plurality of second balls 531 are installed on the inner arc surface of the arc-shaped clamping plate 53, and a plurality of third balls 516 are installed on the inner arc surface of the arc-shaped support plate 515. Among them, the elastic support rods 514 are provided with a relatively large elastic force. When the workpiece is placed on the arc-shaped support plate 515, the arc-shaped support plate 515 will not compress the elastic support rods 514 under the action of the gravity of the workpiece.

[0048] Refer to Figure 1 、 Figure 2 and Figure 7 , the driving member 52 includes an electric push rod 521 fixedly installed on the gantry 22. The lower end of the electric push rod 521 is fixedly installed with a transmission plate 522. A reciprocating plate 523 is slidably installed on the lower side of the transmission plate 522. The lower side of the reciprocating plate 523 is connected to the corresponding arc-shaped clamping plate 53 through a plurality of elastic pressing rods 524.

[0049] Refer to Figure 7 , two fixing plates 525 arranged symmetrically front and back are fixedly installed on the lower side of the transmission plate 522. A wavy groove is formed on the fixing plate 525. A square plate 532 is fixedly installed on the upper side of the arc-shaped clamping plate 53. Both the front and rear ends of the square plate 532 are fixedly installed with matching rods 533, and the matching rods 533 are slidably installed in the corresponding wavy grooves.

[0050] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 7 and Figure 8, the driving part 52 is used to drive the arc-shaped clamping plate 53 and the support group 51 to cooperate to clamp the end of the workpiece. The driving part 52 can also drive the arc-shaped clamping plate 53 to reciprocate left and right to ensure that the workpiece and the arc-shaped clamping plate 53 are centered and aligned. Specifically, when the conveying plate 31 conveys the workpiece to the elastic support part 24, at this time, the arc-shaped support plate 515 can first support the lower side of the workpiece, and then start the electric push rod 521 to finally drive the arc-shaped clamping plate 53 to move downward through the transmission plate 522. The arc-shaped clamping plate 53 moves downward towards the arc-shaped support plate 515. When the arc-shaped clamping plate 53 moves to the upper side of the workpiece and continues to move downward, at this time, under the action of the elastic pressing rod 524 and the elastic support rod 514, the arc-shaped clamping plate 53 and the arc-shaped support plate 515 cooperate to clamp the workpiece, and under the action of the second ball 531 and the third ball 516, the workpiece can rotate.

[0051] As the elastic pressing rod 524 is compressed, at this time, the transmission plate 522 moves downward relative to the arc-shaped clamping plate 53 (the distance between the transmission plate 522 and the arc-shaped clamping plate 53 gradually shortens). The transmission plate 522 drives the fixed plate 525 to move downward relative to the square plate 532, so that the wavy groove and the matching rod 533 cooperate to drive the square plate 532 to reciprocate left and right. And because the reciprocating plate 523 and the transmission plate 522 are slidably connected left and right, the square plate 532 drives the arc-shaped clamping plate 53 to reciprocate left and right, so as to ensure that the axis of the arc-shaped clamping plate 53, the axis of the arc-shaped support plate 515, the axis of the workpiece, and the axis of the center tip in the center tip clamping part 21 are completely collinear in the front-rear direction, so as to further ensure the centering clamping of the center tip clamping part 21 on the workpiece. Under the action of the elastic pressing rod 524 and the elastic support rod 514, the workpiece clamped by the arc-shaped clamping plate 53 and the arc-shaped support plate 515 is located in the middle of the opposite sides of the adjusting plate 511 and the transmission plate 522.

[0052] By screwing the adjusting screw rod 513 to drive the adjusting plate 511 to move up and down along the guide rod 512, the height adjustment of the adjusting plate 511 is realized. Furthermore, when straightening and processing workpieces of different sizes, it is ensured that the workpieces centered and clamped by the arc-shaped clamping plate 53 and the arc-shaped support plate 515 can be aligned with the centering clamping position of the center tip clamping part 21, and it is ensured that the center tip clamping part 21 can perform centering clamping on workpieces of different sizes.

[0053] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic feeding device for an automatic straightening machine, comprising a base, on the upper end of the base are installed a straightening machine and a conveying unit for intermittently conveying workpieces to the right, characterized in that, A straightening unit is installed on the conveying unit, and two clamping units arranged symmetrically front and back are installed between the base and the straightening machine; The conveying unit includes two conveying plates arranged front and back and moving along a looped trajectory. The straightening unit includes a pressing group installed on the front and back sides of the conveying plate. The pressing group is located on the left side of the straightening machine, and two straightening plates arranged symmetrically left and right are installed on the pressing group; A positioning group is installed on the upper left side of the base. When the conveying plate drives the workpiece to move upward, the pressing group first drives the two straightening plates to elastically clamp the workpiece, and then the positioning group arranges the workpiece to be centered front and back; A matching group is also installed on the base. When the conveying plate drives the workpiece to move to the right, the matching group and the pressing group cooperate to drive the straightening plates to straighten the workpiece back and forth; The clamping unit includes a support group installed on the base, a driving member arranged on the straightening machine, and a fixing plate with a wavy groove. An arc-shaped clamping plate is arranged on the driving member; The driving member drives the arc-shaped clamping plate to move downward to cooperate with the support group to clamp the end of the workpiece, and the driving member also cooperates with the wavy groove to drive the arc-shaped clamping plate to move left and right reciprocally to ensure that the workpiece and the arc-shaped clamping plate are coaxial in the front and back directions.

2. The automatic conveying and feeding device of a full-automatic straightening machine according to claim 1, wherein A driving member is connected between the lower side of the conveying plate and the base. The looped movement of the conveying plate is realized through the driving member. A plurality of V-shaped grooves are evenly arranged left and right on the conveying plate, and the installation position of the pressing group corresponds to the V-shaped groove closest to the left side of the straightening machine.

3. An automatic conveying and feeding device for a full-automatic straightening machine according to claim 1, characterized in that, The positioning group includes two L-shaped plates arranged symmetrically front and back and sliding front and back on the base. The conveying unit is located between the two L-shaped plates. A top extension spring is connected between the L-shaped plate and the base. Positioning plates are fixedly installed on the opposite sides of the horizontal sections of the two L-shaped plates, and inclined surfaces are opened at the lower parts of the opposite sides of the two positioning plates.

4. An automatic conveying and loading device for a full-automatic straightening machine according to claim 1, characterized in that, The pressing group includes two elastic reset rods arranged left and right and fixedly installed on the conveying plate. A sliding plate is slidably installed on the two elastic reset rods together, and the sliding plate is initially in contact with the conveying plate. The upper side of the sliding plate is slidably connected to the two corresponding straightening plates left and right, and a pressing spring is connected between the straightening plate and the sliding plate.

5. An automatic conveying and feeding device for a full-automatic straightening machine according to claim 4, characterized in that, A matching column block is fixedly installed at the lower end of the sliding plate. The matching group includes a matching plate distributed below the conveying plate. The left side of the matching plate is set as a trapezoidal structure. The inclined surface of the trapezoidal structure of the matching plate is in contact with the corresponding matching column block. The lower side of the matching plate is connected to the base through two connecting plates arranged symmetrically front and back, and the connecting plates are set as elastic telescopic structures.

6. The automatic conveying and feeding device of a full-automatic straightening machine according to claim 1, characterized in that The upper ends of the opposite sides of the left and right straightening plates are both set as inclined surfaces, and a plurality of first balls are movably installed at the lower ends of the opposite sides of the left and right straightening plates.

7. An automatic conveying and feeding device for a full-automatic straightening machine according to claim 1, characterized in that, The support group includes an adjusting plate arranged above the base. The left side of the adjusting plate is slidably connected to the base up and down through a guiding rod. The right side of the adjusting plate is threadedly connected with an adjusting screw rod, and the adjusting screw rod is rotatably connected to the base. The upper side of the adjusting plate is provided with an arc-shaped support plate through a plurality of elastic support rods.

8. An automatic conveying and feeding device for a full-automatic straightening machine according to claim 7, characterized in that, A plurality of second balls are installed on the inner arc surface of the arc-shaped clamping plate, and a plurality of third balls are installed on the inner arc surface of the arc-shaped support plate.

9. An automatic conveying and feeding device for a full-automatic straightening machine according to claim 1, characterized in that, The driving member includes an electric push rod arranged on the straightening machine. A transmission plate is fixedly installed at the lower end of the electric push rod. A reciprocating plate is slidably installed left and right on the lower side of the transmission plate. The lower side of the reciprocating plate is connected to the corresponding arc-shaped clamping plate through a plurality of elastic pressing rods.

10. An automatic conveying and feeding device for a full-automatic straightening machine according to claim 9, characterized in that, Two fixing plates arranged symmetrically front and back are fixedly installed on the lower side of the transmission plate. A square plate is fixedly installed on the upper side of the arc-shaped clamping plate. Matching rods are fixedly installed at both the front and rear ends of the square plate, and the matching rods are slidably installed in the corresponding waveform holes.

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