Clamping piece cutting device

Abstract

The utility model belongs to the technical field of prestressed clamping piece machining, and particularly relates to a clamping piece cutting device which comprises a rack, the rack is provided with a feeding mechanism used for driving a workpiece to be fed and discharged and a cutting mechanism used for cutting the workpiece, and the feeding mechanism comprises a feeding disc rotationally arranged on the rack; the feeding disc comprises a first material disc and a second material disc which are coaxially fixed, and feeding grooves used for clamping workpieces are formed in the opposite inner sides between the first material disc and the second material disc in a spliced mode. The feeding driving part is installed on the rack, the output end of the feeding driving part is connected to the feeding disc, and the feeding driving part is used for driving the feeding disc to rotate; the rack is provided with a material fixing block, the material fixing block is in swing connection relative to the feeding disc, the rack is further provided with a driving structure, the driving structure drives the material fixing block to enable the material fixing block to swing and abut against a workpiece for positioning, the phenomenon of saw blade eccentric wear caused by workpiece swing in a traditional technology is reduced, and the machining precision and the cutting efficiency are improved.

Description

TECHNICAL FIELD

[0001] The technical scheme relates to prestressed clamping piece processing technology field, and particularly relates to a clamping piece cutting device. BACKGROUND

[0002] The prestressed clamping piece is a key component in a prestressed anchoring system, and is used for fixing a steel strand or a prestressed steel bar in prestressed concrete engineering such as a bridge, a sleeper and a building. The prestressed clamping piece is designed in a wedge-shaped split piece after processing (cutting), bears a long-term high stress environment, and guarantees the stability and safety of the overall structure.

[0003] For example, Chinese patent CN204912928U discloses a prestressed clamping piece sawing machine. The prestressed clamping piece sawing machine comprises a machine tool base, a bimetallic band saw blade supported and driven to rotate by a driving wheel and a driven wheel, the driving wheel and the driven wheel are horizontally arranged in the same plane, the saw teeth of the bimetallic band saw blade are upward, a workpiece clamp device is arranged above the saw teeth, the workpiece clamp device is composed of a left clamp piece and a right clamp piece through threaded connection, the left clamp piece and the right clamp piece comprise disc bodies, recesses are uniformly distributed on the inner side edges of the disc bodies, the recesses arranged on the two disc bodies jointly form a workpiece clamping hole for clamping a workpiece, a conical cavity blank of a workpiece to be processed is inserted into the workpiece clamping hole, a rotating shaft coaxial with the disc bodies is arranged on the outer side of the disc bodies, a transmission device drives the disc bodies to rotate through the rotating shaft, the bimetallic band saw blade cuts the lowermost conical cavity blank of the workpiece to be processed clamped by the workpiece clamp device, and two prestressed clamping pieces are automatically dropped.

[0004] In the prestressed clamping piece sawing machine, the transmission device drives the disc bodies to rotate through the rotating shaft, and the disc bodies drive the workpiece to be processed to contact the bimetallic band saw blade for cutting. However, in actual processing, due to the cooperation gap between the conical cavity blank and the clamp recess and uneven force on the clamping surface, the workpiece is prone to radial deviation or circumferential swing during sawing, which reduces the accuracy of the cutting section and the quality of the workpiece product. In addition, the abnormal friction between the saw blade and the workpiece causes the saw blade to wear and even break, shortens the service life of the saw blade, and affects the processing efficiency and product quality. Therefore, the prestressed clamping piece sawing machine needs to be improved. SUMMARY

[0005] The technical scheme is provided to improve the problem that the existing prestressed clamping piece sawing machine wears the saw blade due to the cutting swing of the workpiece, and reduces the processing efficiency.

[0006] The purpose of the technical scheme is achieved as follows.

[0007] A clamping piece cutting device comprises a rack, a feeding mechanism for feeding workpieces and a cutting mechanism for cutting the workpieces are arranged on the rack, and the feeding mechanism comprises:

[0008] A feeding disc is rotationally arranged on the frame, the feeding disc comprises a coaxially fixed first disc and a second disc, and a feeding groove for clamping the workpiece is arranged on the relative inner side joint between the first disc and the second disc;

[0009] A feeding driving member is arranged on the frame, and the output end of the feeding driving member is connected to the feeding disc to drive the feeding disc to rotate;

[0010] The frame is provided with a fixed block, the fixed block is swingably connected to the feeding disc, and the frame is further provided with a driving structure, the driving structure drives the fixed block to swing against the workpiece to position the workpiece.

[0011] According to the above technical scheme, when the clamping piece cutting device is normally used, the feeding driving member drives the feeding disc composed of the coaxially arranged first disc and second disc to rotate, the feeding groove formed by the inner side joint of the first disc and the second disc is matched with the shape and size of the workpiece, so that the workpiece is continuously conveyed and positioned after being clamped into the feeding groove, when the workpiece is rotated to the cutting position along with the feeding disc, the driving structure pushes the fixed block to swing towards the workpiece, so that the fixed block and the feeding groove form a bidirectional clamping structure, and the workpiece is stably locked in the feeding groove at the cutting position; the cutting mechanism then implements accurate cutting on the statically fixed workpiece, reduces the phenomenon of saw blade eccentric wear caused by workpiece swing in the traditional process, the feeding disc continues to rotate to complete the unloading and loading of new workpieces after cutting is completed, a continuous automatic processing cycle is formed, and the processing precision and cutting efficiency are improved.

[0012] Preferably, the driving structure comprises:

[0013] A fixed block seat is arranged on one side of the frame close to the cutting mechanism, the fixed block seat is provided with a mounting groove, and the fixed block is hingedly connected in the mounting groove;

[0014] An elastic member is arranged in the counterbore of the fixed block, one end of the elastic member abuts against the stepped surface of the counterbore, and the other end of the elastic member abuts against the corresponding groove bottom of the mounting groove, and the elastic force of the elastic member makes the fixed block have a tendency to rotate against the workpiece.

[0015] According to the above technical scheme, the elastic member pushes the fixed block to swing around the hinge point towards the feeding disc in the direction corresponding to the cutting direction of the cutting mechanism, so that the working surface of the fixed block is quickly attached to the end surface of the workpiece to form pre-clamping, and dynamic clamping force can be continuously applied during the cutting process without external power intervention, the workpiece is stably positioned by the elastic potential energy, and self-adaptive adjustment of the clamping force is realized.

[0016] Preferably, the material positioning block has a material positioning portion extending to the outside of the feeding disc, and the material positioning portion has a pressing surface on the side close to the feeding disc, the pressing surface being an inclined surface inclined towards the cutting direction of the feeding disc, so that the gap width between the material positioning block and the feeding disc is gradually reduced along the cutting direction.

[0017] Through the above technical solution, the inclined surface of the pressing surface of the material positioning block gradually narrows the contact with the workpiece along the cutting direction of the feeding disc, avoiding the collision between the workpiece and the material positioning block, and the inclination angle of the inclined surface makes the workpiece receive gradually increasing guiding pressure when entering the pressing area, forcing the workpiece to automatically correct and position along the axis of the feeding groove, improving the positioning accuracy.

[0018] Preferably, the material positioning block is provided with a material positioning wheel rotatably connected to the end of the material positioning block, and the material positioning wheel is used to press against the workpiece.

[0019] Through the above technical solution, when the workpiece enters the cutting station with the feeding disc, the freely rotating material positioning wheel forms rolling contact with the surface of the workpiece, and the material positioning wheel rolls and presses along the axis of the workpiece, thereby pressing and positioning the workpiece.

[0020] Preferably, the material positioning block is provided with an adjusting bolt, the material positioning seat is provided with a connecting hole, the adjusting bolt is connected to the connecting hole after passing through the countersunk hole, and an adjusting nut is threadedly connected to the adjusting bolt, the adjusting nut being located on the side of the material positioning block away from the material positioning seat, and the adjusting nut being used to adjust the compression amount of the elastic member to change the pressure of the material positioning block.

[0021] Through the above technical solution, the axial position of the adjusting nut on the adjusting bolt is changed by rotating the adjusting nut, so that the compression amount of the elastic member in the mounting groove can be accurately controlled, and then the initial pre-tightening force of the material positioning block when swinging and clamping can be adjusted; when the compression amount of the elastic member is increased, the swinging amplitude of the material positioning block is reduced, and the elastic force acting on the material positioning block is increased, so that the clamping pressure of the material positioning block on the workpiece is increased, and vice versa, the swinging amplitude of the material positioning block can be increased, and the pressure of the material positioning block on the workpiece can be reduced, which is suitable for workpieces of different sizes and specifications, ensures the clamping stability under different working conditions, and also balances the material positioning block when it is worn, prolongs the service life, and improves the practicability.

[0022] Preferably, the rack is provided with a material blocking support, the material blocking support is arranged on the discharging side of the feeding disc, the material blocking support is provided with material blocking members, the material blocking members each have an inclined guiding surface, the guiding surface is distributed with a front guiding opening and a rear guiding opening along the cutting direction of the feeding disc, the rear guiding opening is protrudingly arranged relative to the front guiding opening, and when the feeding disc drives the workpiece to move towards the material blocking member, the workpiece first contacts the front guiding opening.

[0023] Through the technical scheme, after the workpiece is cut into two halves, the workpiece is attached to the side wall of the feeding groove, when the two halves of the workpiece rotate to the discharging station, the workpiece on both sides is in contact with the pilot port of the corresponding material blocking piece at the same time, the inclined guide surface guides the workpiece to gradually move outward along the radial direction of the feeding disc to separate from the first and second feeding grooves; the workpiece is completely pushed out of the feeding groove by the lever effect of the protruding structure to realize forced discharging, so that the workpiece falls stably, the workpiece is quickly and losslessly separated, the feeding rhythm is ensured, and the discharging efficiency is improved.

[0024] Preferably, the rack is provided with a material blocking assembly, and the material blocking assembly comprises:

[0025] A material blocking plate is arranged on the rack and located on the discharging side of the feeding disc, and the material blocking plate is provided with a strip-shaped hole;

[0026] A material blocking screw is movably arranged on the material blocking plate, the material blocking screw passes through the strip-shaped hole and moves along the length direction of the strip-shaped hole to adjust the distance relative to the feeding disc, and the end of the material blocking screw extends to the outside of the feeding groove;

[0027] Two material blocking nuts are threadedly connected with the material blocking screw, the two material blocking nuts are respectively connected to the opposite sides of the material blocking screw relative to the strip-shaped hole, and the extension length of the material blocking screw is adjusted through the material blocking nuts.

[0028] Through the technical scheme, when the feeding disc carrying the finished workpiece rotates to the discharging station, the extended end of the material blocking screw accurately blocks the outside of the feeding groove to form a physical block, and the workpiece is discharged from the feeding groove; when adjusting, the two material blocking nuts are first loosened, the screw is slid along the strip-shaped hole of the material blocking plate until the target position, and then the nuts are locked, so that the linear adjustment of the distance between the material blocking position and the feeding groove is realized; and through the cooperation of the screw-nut mechanical pair and the strip-shaped hole guide, the extension length of the material blocking screw is adjusted to adapt to the discharging position requirements of workpieces of different specifications, the double-nut opposite locking mechanism effectively eliminates the displacement swing of the screw after adjustment, the adjustment accuracy of the workpiece discharging is improved, and the workpiece can be stably discharged.

[0029] Preferably, a plurality of feeding grooves are circumferentially arranged along the rotation direction of the feeding disc, each feeding groove comprises a first feeding groove and a second feeding groove, the first feeding groove and the second feeding groove are respectively symmetrically arranged on the opposite inner sides of the first disc and the second disc, and the rack is provided with a positioning device, and the positioning device comprises:

[0030] A positioning pin shaft is movably arranged relative to the rack, a plurality of pin shaft holes are arranged on the feeding disc, the plurality of pin shaft holes are circumferentially distributed on the feeding disc, the positions of the pin shaft holes are arranged in one-to-one correspondence with the first feeding grooves, and the axis of the pin shaft hole is coaxial with the movement direction of the positioning pin shaft;

[0031] A positioning driving member is fixed to the frame, and an output end of the positioning driving member is connected to the positioning pin shaft. When the feeding disc rotates to the target work station, the positioning driving member drives the positioning pin shaft to be inserted into the corresponding pin shaft hole in the horizontal direction for positioning the feeding disc.

[0032] By the above technical solution, when the feeding disc aligns the target feeding groove to the cutting work station through intermittent rotation, the position of the pin shaft hole on the feeding disc is aligned with the positioning pin shaft at this time. The positioning driving member drives the positioning pin shaft to advance, so that the positioning pin shaft passes through the pin shaft hole, realizes the mechanical hard limiting of the rotation angle of the feeding disc, and after the machining is completed, the positioning driving member drives the pin shaft to exit synchronously, and the feeding disc resumes rotation to enter the next indexing cycle. The positioning pin shaft limits the swing of the feeding disc during cutting, improves the cutting stability, and improves the yield of workpiece machining.

[0033] Preferably, the material of the positioning block is wear-resistant material.

[0034] By the above technical solution, the positioning block is in high-frequency friction contact with the surface of the workpiece. The wear-resistant material with high plastic deformation resistance is selected to ensure that the positioning block can reduce the fretting wear when it is subjected to cutting vibration for a long time, avoid the workpiece positioning drift problem caused by the wear of the clamping surface, and ensure the clamping accuracy and machining stability of the cutting device in the whole life cycle.

[0035] Preferably, the cutting mechanism comprises:

[0036] A gearbox is movably arranged on the frame;

[0037] A circular saw blade is connected to the output end of the gearbox, and the circular saw blade rotates relative to the gearbox;

[0038] A circular saw driving member is connected to the input end of the circular saw driving member, and the circular saw driving member is used to drive the circular saw blade to rotate;

[0039] The frame is provided with a machining driving member. The machining driving member drives the gearbox to reciprocate between a first position and a second position. When the gearbox moves to the first position, the circular saw blade is driven to advance to cut the workpiece. When the gearbox moves to the second position, the circular saw blade is driven to exit the feeding disc.

[0040] Through the technical scheme, the circular saw blade driven by the circular saw driving member rotates at high speed at the output end of the gearbox, the machining driving member drives the gearbox to move linearly from the second position to the first position, drives the rotating circular saw blade to cut the workpiece at a uniform speed along the axial direction of the workpiece, and the machining driving member reversely drives the gearbox to retreat to the second position after cutting is completed, so that the circular saw blade retreats from the cutting area and interference between the saw blade and the rotating feeding disc is avoided; through the linear feeding design, independent and accurate control of the cutting speed and the feeding rate of the saw blade is realized, non-processing time is shortened, single cutting quality is improved, and continuous operation efficiency of the cutting mechanism is realized.

[0041] Preferably, the rack is further provided with a feeding device, the feeding device comprising a feeding vibration disc for placing workpieces and a feeding transmission pipe for transmitting workpieces, one end of the feeding transmission pipe being communicated with the feeding vibration disc and the other end being capable of being positioned with the feeding groove.

[0042] Through the technical scheme, the workpieces in the feeding vibration disc are accurately transmitted to the outlet end positioned with the feeding groove of the feeding disc after directional arrangement; when the feeding disc rotates to the preset feeding position, the feeding groove and the outlet end of the transmission pipe are spatially aligned, and the workpieces are automatically loaded into the feeding groove under the action of gravity or auxiliary pushing; the feeding disc is immediately rotated into the cutting process, and the vibration disc continuously replenishes new workpieces to the end of the transmission pipe for the next feeding cycle, so that the workpieces are continuously and orderly supplied, and the efficiency is improved.

[0043] The technical scheme has the following prominent and beneficial technical effects compared with the prior art:

[0044] 1. The feeding disc rotates coaxially through the technical scheme, the feeding groove continuously and accurately positions the workpieces, the fixed material block and the feeding groove form a bidirectional clamping structure, the workpieces are positioned, accurate cutting of the cutting mechanism is facilitated, saw blade eccentric wear caused by workpiece swing is reduced, and processing accuracy and cutting efficiency are improved.

[0045] 2. The fixed material block swings to the cutting direction through the pre-tightening force of the elastic member, pre-clamping of the workpiece and dynamic compensation of the clamping force during cutting are realized, the clamping pressure is self-adaptively adjusted by using elastic potential energy, saw blade eccentric wear is effectively inhibited, and clamping stability and processing efficiency are improved. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 It is a schematic diagram of the overall structure of the embodiment;

[0047] Figure 2 It is a schematic diagram of the local structure of embodiment 1;

[0048] Figure 3 It is a schematic diagram of the local structure of the material blocking support and the material blocking piece in embodiment 1;

[0049] Figure 4 This is a schematic diagram of the overall structure of the material block and drive structure in Example 1;

[0050] Figure 5 This embodiment Figure 5 Partial sectional view;

[0051] Figure 6 This is a partial structural diagram of the feed roller in Example 2;

[0052] Figure 7 This is a partial structural diagram of the baffle assembly in Example 3.

[0053] Figure 8 This is a schematic diagram of the overall structure of the uncut workpiece in this embodiment;

[0054] Figure 9 This is a schematic diagram of the overall structure of the workpiece after cutting in this embodiment.

[0055] Reference numerals: 1. Frame; 2. Feeding mechanism; 21. Feeding tray; 211. First tray; 212. Second tray; 22. Feeding drive component; 3. Cutting mechanism; 31. Gearbox; 32. Circular saw blade; 33. Circular saw drive component; 4. Fixed block; 5. Drive structure; 51. Fixed seat; 52. Elastic component; 6. Mounting groove; 7. Fixed part; 8. Pressing surface; 91. Feeding chute one; 92. Feeding chute two; 10. Stopper; 11. Guide surface; 121. First guide opening; 122. Rear guide opening; 13. Machining drive component; 14. 15. Material stop bracket; 151. Feeding device; 152. Feeding vibratory plate; 153. Feeding transmission pipe; 16. Countersunk hole; 17. Adjusting bolt; 18. Connecting hole; 19. Adjusting nut; 20. Positioning device; 201. Positioning pin; 202. Positioning drive; 23. Pin hole; 24. Fixed wheel; 25. Material stop assembly; 251. Material stop plate; 252. Material stop screw; 253. Material stop nut; 26. Strip hole; 27. Ball bearing; 28. Spring component; 29. ​​Threaded plug; 30. Threaded hole; 100. Workpiece; 200. Pin. Detailed Implementation

[0056] The specific implementation of this technical solution will be further described in detail below with reference to the accompanying drawings.

[0057] Example 1:

[0058] See Figure 1 A clamping and cutting device includes a frame 1, on which a feeding mechanism 2 for loading and unloading workpieces 100, a cutting mechanism 3 for cutting workpieces 100, and a feeding device 15 for feeding the feeding mechanism 2 are provided.

[0059] The cutting mechanism 3 is installed on the side of the feeding mechanism 2 away from the feeding device 15, and the cutting mechanism 3 comprises a gearbox 31, a circular saw blade 32 and a circular saw driving member 33. The gearbox 31 is movably arranged on the rack 1 and moves along a horizontal direction in a reciprocating linear manner. The gearbox 31 can be connected to the rack 1 in a sliding manner by using a sliding rail and a sliding block. The circular saw blade 32 is located at the front side of the gearbox 31 and is rotatably connected to the gearbox 31. A rotating groove is formed in the gearbox 31. A driving shaft is coaxially fixed to the circular saw blade 32. The driving shaft is rotatably arranged on the opposite side walls of the rotating groove through bearings at both ends. The circular saw driving member 33 is preferably a servo motor and is installed on the gearbox 31. The circular saw driving member 33 is connected to the input end of the gearbox 31 through a transmission structure (such as a transmission belt) to drive the circular saw blade 32 to rotate at a high speed around its own axis.

[0060] The rack 1 is provided with a processing driving member 13, which can be a stepping motor or a hydraulic cylinder. A transmission assembly that cooperates with the gearbox 31 can be arranged at the output end of the processing driving member 13. When the processing driving member 13 is a stepping motor, the transmission assembly is preferably a lead screw and a transmission block. The lead screw is connected to the output end of the processing driving member 13 and rotates relative to the rack 1. The transmission block is fixed below the gearbox 31 and is threadedly connected to the lead screw. The processing driving member 13 drives the lead screw to rotate, which drives the transmission block that cooperates with it to move the gearbox 31 forward and backward. The circular saw blade 32 is close to the feeding mechanism 2 to cut the workpiece 100. The workpiece 100 is cut into two halves, and a gap with a thickness of the circular saw blade 32 is left between the two halves. Alternatively, the processing driving member 13 can also be a hydraulic cylinder, and the transmission assembly can be a push rod connected to the gearbox 31. The processing driving member 13 drives the push rod to drive the gearbox 31 to move forward and backward in a reciprocating manner.

[0061] Referring to Figure 2 The feeding mechanism 2 comprises a feeding disc 21 and a feeding driving member 22. The feeding disc 21 is rotatably connected to the rack 1. The rack 1 is provided with two bearing seats. A rotating shaft is connected to the bearing seats at both ends. The feeding disc 21 comprises a first disc 211 and a second disc 212 that are coaxially fixed. A gap is left between the first disc 211 and the second disc 212 for the circular saw blade 32 to pass through freely. A feeding groove for clamping the workpiece 100 is arranged on the inner side of the first disc 211 and the second disc 212. The outer end of the feeding groove is larger than the inner end. The size of the feeding groove is matched with the workpiece 100 to improve the stability of the workpiece 100 in the feeding groove. A plurality of feeding grooves are distributed in the circumferential direction of the feeding disc 21. Each feeding groove is formed by a feeding groove one 91 and a feeding groove two 92 that are symmetrically arranged on the inner side walls of the first disc 211 and the second disc 212.

[0062] The feeding driving member 22 is preferably an electric motor, which is installed on the frame 1 and located at one side of the first tray 211. The output end of the feeding driving member 22 drives the first tray 211 to rotate and synchronously drives the second tray 212 fixed coaxially with the first tray 211 to rotate. The output end of the feeding driving member 22 can be provided with a divider, so that the feeding driving member 22 drives the feeding tray 21 to rotate intermittently by a set angle. The feeding grooves are at least three, each of which is cyclically switched between the workstations. When the feeding tray 21 rotates each time, one of the feeding grooves is in the feeding position to receive the unprocessed workpieces 100, while the other two feeding grooves are respectively in the cutting position and the discharging position, in which the cutting operation is performed and the cut workpieces 100 are discharged from the feeding grooves.

[0063] The frame 1 is provided with a positioning device 20, which includes a positioning pin shaft 201 and a positioning driving member 202. The positioning driving member 202 is installed on the side of the first tray 211 away from the second tray 212. The positioning pin shaft 201 is located on the side of the positioning driving member 202 close to the first tray 211 and connected to the output end of the positioning driving member 202. The positioning pin shaft 201 is movably arranged relative to the frame 1. The side wall of the first tray 211 is provided with pin shaft holes 23 in the circumferential direction. The pin shaft holes 23 are at least three and correspond to the interval positions of the three feeding grooves.

[0064] The positioning driving member 202 is preferably a pneumatic cylinder or an oil cylinder. The positioning driving member 202 drives the positioning pin shaft 201 to move forward and backward. When the feeding tray 21 rotates to the position where the pin shaft hole 23 is aligned with the positioning pin shaft 201, the front end of the positioning pin shaft 201 can be embedded in the pin shaft hole 23 to limit the swing of the feeding tray 21 and improve the cutting stability. After the cutting is completed, the positioning driving member 202 drives the positioning pin shaft 201 to move backward to reset. The positioning pin shaft 201 is disengaged from the pin shaft hole 23, and the feeding tray 21 can rotate again until the next pin shaft hole 23 is aligned with the positioning pin shaft 201 for repeated operation.

[0065] Referring to Figure 1 and Figure 3 The feeding device 15 includes a feeding vibration disc 151 and a feeding transmission pipe 152. The feeding vibration disc 151 carries a plurality of unprocessed workpieces 100. The inlet end of the feeding transmission pipe 152 is communicated with the feeding vibration disc 151. The workpieces 100 in the feeding vibration disc 151 are arranged in a direction and then enter the inlet end of the feeding transmission pipe 152. The other outlet end of the feeding transmission pipe 152 can be positioned with any feeding groove. The workpieces 100 in the feeding transmission pipe 152 are sequentially discharged through the channel. The workpieces 100 are automatically loaded into the feeding groove under the action of gravity or auxiliary pushing.

[0066] Referring to Figure 2 , Figure 5 and Figure 6 , the feeding disc 21 is provided with the material positioning blocks 4, the material positioning blocks 4 are made of wear-resistant material, there are two material positioning blocks 4, a gap is left between the two material positioning blocks 4 for the circular saw blade 32 to pass through, the two material positioning blocks 4 are located on the side of the feeding disc 21 close to the cutting mechanism 3, and the two material positioning blocks 4 are arranged in one-to-one correspondence with the first material disc 211 and the second material disc 212. Each material positioning block 4 has a material positioning portion 7, and the material positioning portions 7 of the two material positioning blocks 4 extend to the outside of the feeding disc 21 in opposite directions. Each material positioning portion 7 has a pressing surface 8 arranged as an end face on the side of the material positioning portion 7 close to the feeding disc 21. The pressing surface 8 is an inclined surface or an arc surface, and is inclined to the direction in which the feeding disc 21 rotates and cuts. The gap between the material positioning portion 7 and the feeding disc 21 is gradually reduced along the direction in which the feeding disc 21 rotates and cuts, so that when the workpiece 100 is driven by the material positioning disc to pass through the inside of the material positioning portion 7, the workpiece 100 contacts the inclined surface of the pressing surface 8, and the material positioning portion 7 gradually presses the workpiece 100 to stably position the workpiece 100 in the feeding groove.

[0067] The rack 1 is also provided with the driving structures 5, there are two driving structures 5, the two driving structures 5 are arranged in one-to-one correspondence with the two material positioning blocks 4, and each driving structure 5 includes a material positioning seat 51 and an elastic member 52. The material positioning seat 51 is fixed on the rack 1 by bolts, and is specifically fixed on the front side of the upper end of the corresponding bearing seat. Each material positioning seat 51 is provided with a mounting groove 6, and the opening direction of the mounting groove 6 is inclined outward relative to the material positioning seat 51. The size and width of the material positioning block 4 are matched with the mounting groove 6, so that the material positioning block 4 is embedded in the corresponding mounting groove 6. The material positioning block 4 and the groove bottom of the mounting groove 6 leave an oscillating gap, and the material positioning block 4 is hinged to the material positioning seat 51 by a pin shaft, and the hinge axis is perpendicular to the rotating axis of the feeding disc 21. Alternatively, the driving structure 5 can also be a driving cylinder.

[0068] Each material positioning block 4 is provided with a countersunk hole 16, which is located at one end of the corresponding material positioning block 4 away from the material positioning portion 7 and penetrates through the side of the material positioning block 4 toward the groove bottom of the mounting groove 6. The elastic member 52 is preferably a return spring, which is embedded in the countersunk hole 16. The upper end of the elastic member 52 abuts against the stepped surface in the countersunk hole 16, and the lower end abuts against the corresponding groove bottom of the mounting groove 6. The elastic force of the elastic member 52 makes the material positioning block 4 have a rotating tendency, so that the pressing surface 8 on the material positioning portion 7 can tightly abut against the workpiece 100.

[0069] Each fixed material block 4 is also provided with an adjusting bolt 17, the fixed material seat 51 is provided with a connecting hole 18 in communication with the countersunk hole 16, the adjusting bolt 17 is connected in the connecting hole 18 after passing through the countersunk hole 16, and the adjusting bolt 17 passes through the inner side of the elastic member 52, and a gap relatively movable is left between the inner wall of the countersunk hole 16 and the adjusting bolt 17, each adjusting bolt 17 is threadedly connected with an adjusting nut 19, the adjusting nut 19 is located on the side away from the fixed material block 4 of the fixed material seat, and the adjusting nut 19 is rotated to be close to or away from the fixed material block 4, when the adjusting nut 19 is close to the fixed material block 4, the adjusting nut 19 is axially pushed along the adjusting bolt 17 and presses the end of the fixed material block 4, so that the compression amount of the elastic member 52 is increased, the initial pre-tightening force is increased, and the swing range of the fixed material block 4 relative to the feeding disc 21 is limited; when the adjusting nut 19 is away from the fixed material block 4, the compression amount of the elastic member 52 is reduced, the clamping pressure is reduced, and the swing freedom of the fixed material block 4 is increased, and the movable gap between the countersunk hole 16 and the adjusting bolt 17 ensures that the fixed material block 4 can still maintain normal swing function during the adjusting process, the clamping force parameter and the swing range are cooperatively adjustable, and the applicability to different specifications of workpieces 100 is improved.

[0070] Referring to Figure 4 The rack 1 is provided with material blocking supports 14, the material blocking supports 14 are provided with two, the two material blocking supports 14 are symmetrically arranged below the material ejection side of the feeding disc 21, and the two material blocking supports 14 are arranged corresponding to the first material disc 211 and the second material disc 212 on the two sides, respectively corresponding to the material ejection tracks of the first material disc 211 and the second material disc 212; each support is provided with oppositely arranged material blocking members 10, the opposite end faces between the two material blocking members 10 have inclined guide surfaces 11, the guide surfaces 11 are preferably arc surfaces or inclined surfaces, the guide surfaces 11 are distributed with leading guide ports 121 and trailing guide ports 122 along the cutting-in direction of the rotation of the feeding disc 21, the leading guide port 121 is located at the top end of the guide surface 11 and is arranged close to the lowest point of the groove depth of the corresponding installation groove 6 as an initial contact point, and the trailing guide port 122 is located below the leading guide port 121 and is arranged protruding relative to the leading guide port 121, forming a pushing path, when the feeding disc 21 drives the workpieces 100 to move towards the material blocking members 10, the two cut workpieces 100 are in one-to-one correspondence with the leading guide ports 121 on the two sides, and are gradually moved out under the guidance of the inclined guide surfaces 11, and the workpieces 100 are completely pushed out of the corresponding feeding grooves to realize forced material ejection by using direct collision or lever principle; alternatively, a threaded hole 30 can be provided through the side wall of the feeding groove, the threaded hole 30 has a smaller hole diameter at one end and a larger hole diameter at the other end in communication with the feeding groove, the threaded hole 30 is outwardly flared, the ball 27 and the spring member 28 are sequentially embedded through the large-diameter end of the threaded hole 30, the threaded hole 30 is connected with a threaded plug 29 at the large-diameter end, and the spring member 28 is abutted against the corresponding inner wall of the ball 27 and the threaded plug 29 at both ends, so that the ball 27 partially protrudes from the inner wall of the feeding groove, and the spring force of the spring member 28 enables the ball 27 to push the workpiece 100 away.

[0071] The specific working process of the scheme is as follows:

[0072] The technical scheme drives the feeding disc 21 composed of the first disc 211 and the second disc 212 coaxially by the feeding driving part 22, and the feeding groove formed by the inner side splicing of the two is matched with the shape and size of the workpiece 100, so that the workpiece 100 is continuously conveyed and positioned after being clamped into the feeding groove. When the workpiece 100 rotates to the cutting position with the feeding disc 21, the driving structure 5 pushes the positioning block 4 to swing to the workpiece 100, so that the positioning block 4 and the feeding groove form a bidirectional clamping structure, and the workpiece 100 is stably locked in the feeding groove in the cutting position. The cutting mechanism 3 then implements accurate cutting on the static workpiece 100, reduces the saw blade eccentric wear phenomenon caused by the swing of the workpiece 100 in the traditional process, and after the cutting is completed, the feeding disc 21 continues to rotate to complete the discharging and loading of the new workpiece 100, forming a continuous automatic processing cycle, improving the processing precision and cutting efficiency.

[0073] Embodiment 2:

[0074] Referring to Figure 6 A clamping piece cutting device, which is different from the embodiment 1 in that each positioning block 4 is provided with a positioning wheel 24, the positioning wheel 24 is coaxially installed on the end of the corresponding positioning block 4 through a rolling bearing, so that the positioning wheel 24 is rotationally connected to the positioning block 4, the two positioning wheels 24 are located on the opposite inner sides of the two positioning blocks 4 one by one, the positioning wheel 24 has a guide circular arc surface around the circumference, the elastic force of the elastic member 52 drives the positioning block 4 to swing in the direction of the feeding disc 21, the feeding disc 21 continuously rotates to drive the workpiece 100 to move during the cutting process, the positioning wheel 24 rolls in contact with the feeding disc 21 and rotates adaptively, when the workpiece 100 is aligned with the positioning wheel 24, the positioning wheel 24 has a tendency to rotationally abut against the workpiece 100, and the positioning wheel 24 abuts against the workpiece 100 to position the workpiece 100, so as to stabilize the subsequent cutting operation.

[0075] Embodiment 3:

[0076] Referring to Figure 7 A clamping piece cutting device, which is different from the embodiment 1 in that the rack 1 is provided with a material blocking assembly 25, the material blocking assembly 25 includes a material blocking plate 251, a material blocking screw 252 and a material blocking nut 253, the material blocking plate 251 is provided with two, the two material blocking plates 251 are located on the discharging side of the feeding disc 21, and the two material blocking plates 251 are arranged one by one on the first disc 211 and the second disc 212. Each material blocking plate 251 is provided with a strip-shaped hole 26, and the length direction of the strip-shaped hole 26 is perpendicular to the rotation axis of the feeding disc 21.

[0077] Each of the material blocking plates 251 is movably connected with a material blocking screw 252, and opposite ends of the two material blocking screws 252 extend to the outside of the feeding grooves, so that the extension parts of the two material blocking screws 252 are arranged in one-to-one correspondence with the feeding groove one 91 and the feeding groove two 92. The specific movably connecting manner of the material blocking screw 252 is provided with two material blocking nuts 253, the size of the material blocking nuts 253 is greater than the channel width of the strip-shaped hole 26, the first material blocking nut 253 is threadedly connected with the material blocking screw 252, and after the material blocking screw 252 passes through the corresponding strip-shaped hole 26, the first material blocking nut 253 is located between the material blocking plate 251 and the screw head of the material blocking screw 252; the second material blocking nut 253 is threadedly connected with the material blocking screw 252, and the second material blocking nut 253 is located on the side of the material blocking plate 251 away from the first material blocking nut 253, so that the two material blocking nuts 253 are located on the opposite sides of the material blocking plate 251.

[0078] By tightening the two material blocking nuts 253, the movement of the material blocking screw 252 is limited, the position of the material blocking screw 252 on the strip-shaped hole 26 is fixed, and the material blocking screw 252 can change the fixed position again, flexibly adjust the spacing between the material blocking screw 252 and the feeding disc 21, and improve the applicability; by changing the connection positions of the two material blocking nuts 253, the extension lengths of the material blocking screw 252 to the feeding grooves are adjusted.

[0079] The basic principles and main features of the technical solution and the advantages of the technical solution are shown and described above. It should be understood by those skilled in the art that the technical solution is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the technical solution. Without departing from the spirit and scope of the technical solution, the technical solution can also be variously changed and improved, and these changes and improvements all fall within the scope of the claimed technical solution. The scope of protection of the technical solution is defined by the appended claims and their equivalents.

Claims

1. A clamping and cutting device, comprising a frame (1), wherein the frame (1) is provided with a feeding mechanism (2) for loading and unloading workpieces and a cutting mechanism (3) for cutting the workpieces, characterized in that, The feeding mechanism (2) includes: The feeding tray (21) is rotatably mounted on the frame (1). The feeding tray (21) includes a first tray (211) and a second tray (212) fixed coaxially. The feeding groove for clamping the workpiece is spliced ​​between the inner sides of the first tray (211) and the second tray (212). A feeding drive unit (22) is mounted on the frame (1). The output end of the feeding drive unit (22) is connected to the feeding tray (21) to drive the feeding tray (21) to rotate. The frame is provided with a fixed block (4), which is oscillatingly connected to the feeding tray (21). The frame (1) is also provided with a driving structure (5), which drives the fixed block (4) to oscillate and press against the workpiece for positioning.

2. The clamping and cutting device according to claim 1, characterized in that: The driving structure (5) includes: A material holder (51) is provided on the side of the frame (1) near the cutting mechanism (3). The material holder (51) has an installation groove (6) and the material block (4) is hinged in the installation groove (6). The elastic element (52) is provided in the countersunk hole (16) of the fixed block (4). The elastic element (52) is embedded in the countersunk hole (16). One end of the elastic element (52) abuts against the stepped surface of the countersunk hole (16) and the other end abuts against the bottom of the corresponding groove of the mounting groove (6). The elastic force of the elastic element (52) makes the fixed block (4) tend to rotate and press against the workpiece.

3. The clamping and cutting device according to claim 2, characterized in that: The fixed material block (4) has a fixed material part (7) that extends to the outside of the feeding tray (21). The fixed material part (7) has a pressing surface (8) on the side near the feeding tray (21). The pressing surface (8) is an inclined surface that is inclined toward the rotational cutting direction of the feeding tray (21), so that the gap width between the fixed material block (4) and the feeding tray (21) is gradually reduced along the rotational cutting direction.

4. The clamping and cutting device according to claim 2, characterized in that: The fixed material block (4) is provided with a fixed material wheel (24), which is rotatably connected to the end of the fixed material block (4) and is used to press against the workpiece.

5. A clamping and cutting device according to claim 3 or 4, characterized in that: The fixed material block (4) is provided with an adjusting bolt (17), and the fixed material seat (51) is provided with a connecting hole (18). The adjusting bolt (17) passes through the countersunk hole (16) and is connected to the connecting hole (18). An adjusting nut (19) is threaded onto the adjusting bolt (17). The adjusting nut (19) is located on the side of the fixed material block (4) away from the fixed material seat (51) and is used to adjust the compression of the elastic element (52) to change the pressure of the fixed material block (4).

6. The clamping and cutting device according to claim 1, characterized in that: The frame (1) is provided with a material stop bracket (14), which is located on the unloading side of the feeding tray (21). The material stop bracket (14) is provided with a material stop component (10), which has an inclined guide surface (11). The guide surface (11) has a first guide opening (121) and a rear guide opening (122) distributed along the rotation cutting direction of the feeding tray (21). The rear guide opening (122) protrudes relative to the first guide opening (121). When the feeding tray (21) drives the workpiece to move toward the material stop component (10), the workpiece first contacts the first guide opening (121).

7. The clamping and cutting device according to claim 1, characterized in that: The frame (1) is provided with a material stop assembly (25), the material stop assembly (25) comprising: A baffle plate (251) is provided on the frame (1) and located on the unloading side of the feeding tray (21), and the baffle plate (251) has a strip hole (26); A stop screw (252) is movably mounted on the stop plate (251). The stop screw (252) passes through the strip hole (26) and moves along its length to adjust the distance relative to the feed tray (21). The end of the stop screw (252) extends to the outside of the feed trough. A stop nut (253) is threadedly connected to the stop screw (252). There are two stop nuts (253), which are respectively connected to the opposite sides of the stop screw (252) relative to the strip hole (26). The extension length of the stop screw (252) is adjusted by the stop nuts (253).

8. The clamping and cutting device according to claim 1, characterized in that: The feeding troughs are arranged circumferentially along the rotation direction of the feeding disc (21). Each feeding trough includes a feeding trough one (91) and a feeding trough two (92) symmetrically opened on the inner sides of the first disc (211) and the second disc (212). The frame (1) is provided with a positioning device (20), which includes: A positioning pin (201) is movably arranged relative to the frame (1). A plurality of pin holes (23) are provided on the feeding tray (21). The plurality of pin holes (23) are distributed circumferentially on the feeding tray (21), and the position of the pin holes (23) corresponds one-to-one with the feeding groove. The axis of the pin holes (23) is coaxial with the moving direction of the positioning pin (201). The positioning drive (202) is fixed to the frame (1). The output end of the positioning drive (202) is connected to the positioning pin (201). When the feeding tray (21) rotates to the target station, the positioning drive (202) drives the positioning pin (201) to be inserted into the corresponding pin hole (23) in the horizontal direction for positioning the feeding tray (21).

9. A clamping and cutting device according to claim 1, characterized in that: The cutting mechanism (3) includes: The gearbox (31) is movably mounted on the frame (1); A circular saw blade (32) is connected to the output end of the gearbox (31), and the circular saw blade (32) rotates relative to the gearbox (31); A circular saw drive unit (33) is connected to the input end of the circular saw drive unit (33), which is used to drive the circular saw blade (32) to rotate. The frame (1) is provided with a processing drive (13), which drives the gearbox (31) to reciprocate between a first position and a second position. When the gearbox (31) moves to the first position, it drives the circular saw blade (32) to advance to cut the workpiece. When the gearbox (31) moves to the second position, it drives the circular saw blade (32) to exit the feed tray (21).

10. A clamping and cutting device according to claim 1, characterized in that: The frame (1) is also provided with a feeding device (15), which includes a feeding vibratory plate (151) for placing workpieces and a feeding transmission pipe (152) for transmitting workpieces. One end of the feeding transmission pipe (152) is connected to the feeding vibratory plate (151), and the other end is aligned with the feeding trough.

Images