Blank forming equipment for high-precision bearing roller pin production

Abstract

The application relates to the technical field of needle machining, and discloses a blank forming equipment for high-precision bearing needle production, which comprises a rack and a side plate, the side plate is installed at the top of the rack, one side of the side plate is provided with a connecting frame with an open bottom, and a discharge port for passing out the needle blank is arranged on the side plate; a needle square cutter is arranged in the inside of the connecting frame and one side of the side plate; a bottom supporting system is arranged on the inside of the connecting frame, the bottom supporting system is used for supporting the bottom of the sheared needle blank, and the bottom supporting system comprises two symmetrically-arranged supporting blocks and a supporting plate. The oppositely-moving supporting blocks in the bottom supporting system and the first arc surface at the bottom of the needle square cutter form complete covering support on the upper and lower peripheries of the cut needle blank, so that the needle blank is prevented from being broken or bumped due to impact force.

Description

Technical Field

[0001] This invention relates to the field of needle roller machining technology, and more specifically to a blank forming equipment for producing high-precision bearing needle rollers. Background Technology

[0002] High-precision bearings are core components for achieving precise rotational motion in high-end mechanical equipment. Needle rollers, as one of their key rolling elements, have significant characteristics such as slender structure and strong load-bearing capacity. In the manufacturing process of needle rollers, blank forming is the first and most critical step. The raw materials used for processing only undergo basic cold drawing and do not undergo quenching, carburizing, or other strengthening heat treatments. The material has low overall hardness and excellent plasticity, making it easy to cut and cut smoothly. During production, the coil of steel bars needs to be cut into short cylindrical sections of a set length to serve as blanks for subsequent grinding and ultra-precision machining. The blanks will undergo subsequent grinding, quenching, carburizing, and ultra-precision machining to gradually obtain high-strength finished needle rollers that meet the precision requirements.

[0003] When the cutting tool applies a shear load to the steel bar and completes the cut, the cut section of needle roller blank will fly off at high speed in any direction in an uncontrollable manner under the combined action of residual stress, material springback, or tool impact force. The flying blank is difficult to be accurately caught by conventional material boxes or conveying mechanisms, resulting in material scattering or collision damage, which seriously affects the production cycle and automation continuity. At the same time, the scattered blanks need to be picked up and sorted manually, increasing labor intensity and production costs. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a blank forming equipment for high-precision bearing needle roller production, so as to solve the problem that the blanks that fly away are difficult to be accurately received by conventional material boxes or conveying mechanisms, resulting in material scattering, mixing or collision damage, which seriously affects the production cycle and automation continuity. At the same time, the scattered blanks need to be picked up and sorted manually, which increases labor intensity and production costs.

[0005] This invention provides the following technical solution: a blank forming device for high-precision bearing needle roller production, comprising: The frame and side plates are installed on the top of the frame. One side of the side plate is provided with a connecting frame with a bottom opening. The side plate is provided with a discharge port for the needle roller blank to pass through. The needle roller square cutter is located inside the connecting frame and on one side of the side plate; The bottom support system is located inside the connecting frame. The bottom support system is used to support the bottom of the needle roller blank during shearing and forming. The bottom support system includes two symmetrically arranged carrier plates and support blocks. The carrier plates are installed on the inner walls of both sides of the connecting frame, and the two support blocks are located below the needle roller blank. An opposing movement drive system is used to synchronously drive the needle roller square cutter downward and the support block upward to move in opposite directions, so that the needle roller square cutter and the support block together cover the needle roller blank; The downward pressure assembly is used to drive the bottom support system and the opposing movement drive system on the connecting frame to move downward as a whole, providing punching force for breaking the needle rollers.

[0006] As a further embodiment of the present invention, the bottom support system also includes: Two second arc surfaces are formed on the top of the support block, and the curvature of the two second arc surfaces is adapted to the bottom outer perimeter dimension of the needle roller blank. The opposing movement drive system is located on the inner walls of both sides of the connecting frame. The opposing movement drive system is used to drive the needle roller square cutter and the bottom support system to contact the needle roller blank. The opening and closing linkage system is located on the side of the side plate near the support block. The opening and closing linkage system is used to drive the two support blocks to open, close and close. The discharge head is located inside the connecting frame and on one side of the side plate. A through-type discharge port is opened in the middle of one side of the discharge head. The bottom of the needle roller square cutter is provided with a first arc surface, and the curvature of the first arc surface is adapted to the outer circumference of the needle roller blank.

[0007] As a further embodiment of the present invention, the opposing movement drive system includes: Two fixed blocks are fixedly connected to the inner walls of both sides of the connecting frame. Two first guide rods and two second guide rods are fixedly connected to the top and bottom of the two fixed blocks, respectively. The needle roller square cutter is slidably connected to the two first guide rods, and the carrier plate is slidably connected to the two second guide rods. The first rack and the second rack are respectively fixedly connected to one side of the needle roller square cutter and one side of one of the carrier plates; The gear is rotatably connected to the inner wall of one side of the connecting frame, and the gear meshes with the first rack and the second rack; A self-locking miniature geared motor is used to drive the gear to rotate along the axis and is fixedly connected to the outer wall of one side of the connecting frame; An offset detection component is located on one side of the side plate. The offset detection component is used to detect the vertical state of the needle roller square cutter.

[0008] As a further embodiment of the present invention, the opening and closing linkage system includes: The mounting bracket is fixedly connected to one side of the side plate. Two symmetrically arranged guide brackets are fixedly connected to the top of the mounting bracket. Each guide bracket has an inclined surface on its opposite side. The inclined surface is located at the bottom of the guide bracket, and the top of one side of the guide bracket is flat. Multiple positioning posts are evenly and fixedly connected to the opposite sides of two support blocks, and the positioning posts are slidably connected to the carrier plate. The outer side of the positioning posts is provided with elastic components, which are used to push the support blocks closer to the inner side of the guide frame. Two rollers are rotatably connected to the opposite side of the support block via bearing seats, and the rollers are in contact with the guide frame.

[0009] As a further embodiment of the present invention, the elastic component includes a tension spring sleeved on the outer layer of the positioning post, with one end of the tension spring fixed to the support block and the other end fixed to the carrier plate.

[0010] As a further embodiment of the present invention, the offset detection component includes two slide rods installed on one side of the side plate, a connecting frame is slidably connected to one of the slide rods via a slide block, a tension sensor is installed on one side of the connecting frame, and the other end of the tension sensor is slidably connected to the other slide rod via a slide block.

[0011] As a further embodiment of the present invention, the pressing component includes a fixing frame, which is fixedly connected to one side of the side plate. A hydraulic cylinder is fixedly connected to the top of the fixing frame, and one end of the hydraulic cylinder passes through the fixing frame and is fixedly connected to a first slider. The first slider is fixed to the connecting frame, and a connecting component for connecting the needle roller square cutter and the first slider is provided on one side of the needle roller square cutter.

[0012] As a further embodiment of the present invention, the connecting component includes: The connecting rod is fixedly connected to the top inner wall of the connecting frame, and the connecting rod passes through the inside of the needle roller square cutter; A groove is formed inside the needle roller square cutter. A second slider is slidably connected inside the groove and is fixed to the connecting rod. An insertion hole is provided on one side of the second slider. A cylinder is fixedly connected to one side of a needle roller square cutter, and the telescopic end of the cylinder passes through the needle roller square cutter and is fixedly connected to an insert block, which is inserted into the insertion hole.

[0013] As a further embodiment of the present invention, an inclined guide plate is fixedly connected to the top of the frame and the guide plate is located below the discharge port. A conveyor belt is provided on the top of the frame and the conveyor belt is located at the bottom end of the guide plate.

[0014] As a further embodiment of the present invention, a photoelectric switch is fixedly connected to the bottom of the connecting frame, and the detection end of the photoelectric switch is set towards the needle roller square knife.

[0015] The technical effects and advantages of this invention are as follows: 1. The present invention uses the opposing support blocks in the bottom support system and the first arc surface at the bottom of the needle roller square cutter to form a complete covering support on the upper and lower outer circumference of the needle roller blank when cutting it, so as to prevent the blank from flying or bumping due to impact force. At the same time, in conjunction with the inclined surface and tension spring of the opening and closing linkage system, the support blocks are automatically controlled to open and unload when the connecting frame moves down, thereby reducing the drop height difference and preventing end face damage. The inclined guide plate and conveyor belt cause the cut needle roller blank to slide onto the conveyor belt after being buffered by the guide plate.

[0016] 2. The present invention, by providing a cylinder, insert block and insert hole structure in the connecting assembly, locks the needle roller square cutter relative to the connecting frame after it comes into contact with the needle roller blank. This allows the shearing force of the hydraulic cylinder to be directly transmitted to the needle roller square cutter through the connecting frame, avoiding the shearing force loss caused by insufficient clearance or rigidity when indirectly transmitted through gear rack and pinion, ensuring a clean and crisp cutting action and improving the flatness of the cut end face.

[0017] 3. This invention uses a tension sensor to monitor the tilting changes of the connecting frame as it moves with the needle roller square cutter in real time. This allows for automatic alarm and shutdown when the cutter head shifts position, effectively preventing batch blanks from failing to meet dimensional accuracy standards, reducing scrap rate, and ensuring forming accuracy. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 For the present invention Figure 1 A partially enlarged structural diagram.

[0020] Figure 3 This is a cross-sectional view of the connecting frame structure of the present invention.

[0021] Figure 4 This is a schematic diagram of the connection component structure of the present invention.

[0022] Figure 5 This is a schematic diagram of the cylinder explosion structure of the present invention.

[0023] Figure 6 This is a schematic diagram of the opposing movement drive system of the present invention.

[0024] Figure 7 This is a schematic diagram of the opening and closing linkage system and the bottom support system of the present invention.

[0025] Figure 8 This is a schematic diagram of the first and second arc surfaces of the present invention.

[0026] Figure 9 This is a schematic diagram of the offset detection component of the present invention.

[0027] Figure 10 This is a schematic diagram of the process of the present invention.

[0028] The attached figures are labeled as follows: 1. Pressing component; 2. Opposing movement drive system; 3. Connecting component; 4. Opening and closing linkage system; 5. Bottom support system; 6. Offset detection component; 7. Side plate; 8. Frame; 9. Connecting frame; 10. Needle roller square cutter; 11. First arc surface; 12. Discharge head; 13. Discharge port; 14. Photoelectric switch; 15. Guide plate; 16. Conveyor belt; 101. Hydraulic cylinder; 102. First slider; 103. Fixing frame; 201. Self-locking miniature geared motor; 202. First rack; 203. Gear; 204. Second rack; 205. First guide rod; 206. Fixing block; 207. Second guide rod; 301. Cylinder; 302. Second slider; 303. Slide groove; 304. Connecting rod; 305. Insert block; 306. Insertion hole; 401. Mounting bracket; 402. Guide bracket; 403. Inclined surface; 404. Positioning post; 405. Tension spring; 406. Roller; 501. Carrier plate; 502. Support block; 503. Second arc surface; 601. Tension sensor; 602. Sliding rod. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Reference Figures 1-10 This invention provides a high-precision blank forming equipment for bearing needle roller production, including a frame 8, a side plate 7, a first arc surface 11, a connecting frame 9, a needle roller square cutter 10, a discharge head 12, a pressing component 1, and a bottom support system 5. It realizes bottom support for the needle roller blank during shearing and forming. With the first arc surface 11 of the needle roller square cutter 10 adapted to the bottom of the blank's outer periphery, it can completely cover and support the upper and lower outer peripheries of the needle roller blank during the cutting and forming process, preventing the needle roller blank from flying off uncontrollably due to impact force. At the same time, the formed blank will be supported by the bottom support system 5 and moved downwards, reducing the height difference of the fall and ensuring that the needle roller blank will not be bumped or scattered due to impact force. Specifically: A side plate 7 is fixed to the top edge of the frame 8 by bolts. A connecting frame 9 is provided on one side of the side plate 7. The connecting frame 9 has a U-shaped structure with an open bottom. A needle roller square cutter 10 is set inside the connecting frame 9. A first arc surface 11 is opened at the bottom of the needle roller square cutter 10. The curvature of the first arc surface 11 is adapted to the outer circumference of the needle roller blank. During stamping, the first arc surface 11 can fit against the outer circumference of the upper half of the needle roller blank to be cut, providing a uniform supporting force for the upper end of the needle roller blank. It should be noted that the needle roller square cutter 10 is existing technology. The needle roller square cutter 10 is made of high-strength tool steel and the cutting edge is hardened by quenching to ensure the sharpness of the cutting edge and long service life during the shearing process. Those skilled in the art can set it according to actual needs, which will not be elaborated here. The discharge head 12 has a cylindrical structure. The discharge head 12 is fixed to one side of the side plate 7 by bolts. A through discharge port 13 is opened in the middle of one side of the discharge head 12. The outer needle roller blank is pushed into the straightening machine through the feeding mechanism and enters the discharge port 13. It extends from the other end of the discharge head 12 between the needle roller square knife 10 and the bottom support system 5. like Figure 3 , Figure 7 and Figure 8 As shown, the bottom support system 5 is located inside the connecting frame 9. The bottom support system 5 is used to support the bottom of the needle roller blank during shearing and forming. The bottom support system 5 includes a carrier plate 501, a support block 502, a second arc surface 503, an opposing movement drive system 2, and an opening and closing linkage system 4. Specifically, two symmetrically arranged carrier plates 501 are respectively arranged on both sides of the connecting frame 9, and two symmetrically arranged support blocks 502 are respectively arranged on the opposite side of the two carrier plates 501 and located below the discharge port 13. Two second arc surfaces 503 are formed on the top of the support blocks 502, and the curvature of the two second arc surfaces 503 is adapted to the bottom outer periphery size of the needle roller blank. The opposing moving drive system 2 moves the two support blocks 502 upward and simultaneously drives the needle roller square cutter 10 downward. The two second arc surfaces 503 can jointly fit the outer periphery of the lower half of the needle roller blank, and the first arc surface 11 at the bottom of the needle roller square cutter 10 fits the outer periphery of the upper half of the needle roller blank, jointly covering the outer periphery of the needle roller blank to be cut, providing all-round uniform support for the needle roller blank, avoiding the needle roller blank from bouncing and shifting due to residual stress and impact force at the moment of cutting, and avoiding the problem of the blank flying out uncontrollably from the source.

[0031] To address the issue that the needle roller square cutter 10 and the support block 502 cannot fully conform to the outer circumference of the needle roller blank and that this conflict with the feeding process, the opposite-moving drive system 2 can solve the above problem, as detailed below: like Figure 3As shown, the opposing movement drive system 2 is set on the inner walls of both sides of the connecting frame 9. The opposing movement drive system 2 is used to drive the needle roller square cutter 10 and the bottom support system 5 to contact the needle roller blank. The opposing movement drive system 2 includes two fixing blocks 206. The two fixing blocks 206 are respectively fixed to the inner walls of both sides of the connecting frame 9 by bolts. The top and bottom of the two fixing blocks 206 are respectively fixed with two first guide rods 205 and two second guide rods 207 by bolts. The needle roller square cutter 10 is slidably connected to the two first guide rods 205, and the carrier plate 501 is slidably connected to the two second guide rods 207. The first guide rods 205 guide the needle roller square cutter 10 to make stable vertical movement, and the second guide rods 207 guide the carrier plate 501 to make stable vertical movement, so as to avoid positional deviation during movement and ensure that the first arc surface 11 and the second arc surface 503 can accurately fit the outer periphery of the needle roller blank. Furthermore, the first rack 202 and the second rack 204 are respectively fixed to one side of the needle roller square cutter 10 and one side of one of the carrier plates 501 by bolts; the gear 203 is rotatably connected to the inner wall of one side of the connecting frame 9, and the gear 203 meshes with the first rack 202 and the second rack 204. The self-locking micro gear motor 201 is used to drive the gear 203 to rotate along the axis and is fixed to the outer wall of one side of the connecting frame 9 by bolts. Starting the self-locking micro gear motor 201 can drive the gear 203 to rotate. When the gear 203 rotates, it will synchronously drive the meshing first rack 202 to move down and the second rack 204 to move up, so as to realize the opposite movement of the needle roller square cutter 10 moving down and the two support blocks 502 moving up synchronously. It should be noted that the self-locking micro geared motor 201 is existing technology. The self-locking micro geared motor 201 is a speed reduction transmission device that integrates a self-locking function. Its core feature is that it achieves "reverse self-locking" through a mechanical structure (such as a micro worm gear) - that is, the output shaft (load end) can only be driven to rotate by the input shaft (motor end), and the load reaction force of the output shaft cannot make the input shaft rotate in the opposite direction. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0032] Specifically, the self-locking micro geared motor 201 is started, which drives the gear 203 to rotate. The gear 203 synchronously drives the meshing first rack 202 to move downward and the second rack 204 to move upward, which drives the needle roller square cutter 10 to move downward along the first guide rod 205. At the same time, it drives the carrier plate 501 and the support block 502 to move upward along the second guide rod 207, so that the first arc surface 11 at the bottom of the needle roller square cutter 10 and the second arc surface 503 at the top of the two support blocks 502 move closer to each other, together covering and clamping the outer periphery of the needle roller blank to be cut at the outlet 13. Then, the pressing component 1 provides shearing force to complete the cutting operation. Furthermore, after the cutting is completed, the cut needle roller blank will remain between the second arc surface 503 of the two support blocks 502. The opening and closing linkage system 4 solves the problem of blank discharge, and also reduces the height difference of the blank falling, avoiding the blank from being affected by impact when falling and affecting the end face accuracy, as detailed below: like Figure 3 and Figure 7 As shown, the opening and closing linkage system 4 is located on the side of the side plate 7 near the support block 502. The opening and closing linkage system 4 is used to drive the two support blocks 502 to open, close and shut. The opening and closing linkage system 4 includes a mounting bracket 401, a guide bracket 402, an inclined surface 403 and a tension spring 405. Mounting bracket 401 is fixed to one side of side plate 7 by bolts. The top of mounting bracket 401 is fixed with two symmetrically arranged guide brackets 402 by bolts. Each guide bracket 402 has an inclined surface 403 on its opposite side. The inclined surface 403 is located at the bottom of the guide bracket 402, and the top of one side of the guide bracket 402 is flat. Multiple positioning posts 404 are evenly fixed to the opposite side of two support blocks 502 by bolts. The positioning posts 404 are slidably connected to the carrier plate 501. The multiple positioning posts 404 are used to guide the two support blocks 502 to slide horizontally relative to each other along the carrier plate 501 and adjust the opening and closing distance between the two support blocks 502. On the opposite sides of the two support blocks 502, rollers 406 are rotatably connected via bearing seats, and the rollers 406 are in contact with the guide frame 402. The rollers 406 are used to reduce the friction between the support blocks 502 and the guide frame 402, converting sliding friction into rolling friction and improving smooth movement. An elastic component is provided on the outer side of the positioning post 404. The elastic component is used to push the support block 502 close to the inner side of the guide frame 402. The elastic component includes a tension spring 405 sleeved on the outer layer of the positioning post 404. One end of the tension spring 405 is fixed to the support block 502, and the other end is fixed to the carrier plate 501. The tension spring 405 is used to pull the support block 502 so that the support block 502 always maintains the tendency to move outward, so that the roller 406 can always fit against the inner wall of the guide frame 402. It should be noted that when the roller 406 contacts the plane of the guide frame 402, the distance between the two support blocks 502 is adapted to the diameter of the needle roller blank. When the roller 406 contacts the inclined surface 403 of the guide frame 402, the two support blocks 502 will open relatively due to the tension of the tension spring 405, increasing the distance between the two support blocks 502. The needle roller blank that was originally stuck between the second arc surface 503 will lose its bottom support and fall down along the gap between the support blocks 502, thus completing the automatic discharge of the blank after cutting. When the connecting frame 9 is moved downward by the pressing component 1, the connecting frame 9 will drive the needle roller square cutter 10, the carrier plate 501 and the support block 502 to move downward as a whole. The roller 406 on the outside of the support block 502 slides down the inner wall of the guide frame 402. When the roller 406 moves to the inclined surface 403 at the bottom of the guide frame 402, the tension spring 405 pulls the support block 502 to slide outward along the positioning post 404. The two support blocks 502 open up, and the cut needle roller blank loses the bottom support and falls down automatically. At the same time, the downward movement of the connecting frame 9 also reduces the initial height of the blank when the support block 502 opens, reduces the height difference of the blank falling, and avoids the blank from colliding with the components below when it falls. It should be noted that those skilled in the art can understand that the tension spring 405 is a common wear part, and its periodic replacement falls within the scope of routine equipment maintenance. In actual use, the frequency of use and lifespan of the tension spring 405 are within a reasonable range and will not affect the overall stability of the equipment.

[0033] Furthermore, the top of the frame 8 is bolted with an inclined guide plate 15, which is located below the discharge port 13. The top of the frame 8 is equipped with a conveyor belt 16, which is located at the bottom of the guide plate 15. The falling needle blank slides down the inclined guide plate 15 and finally falls onto the conveyor belt 16 for conveying out, completing the entire shearing and forming operation. The guide plate 15 guides the blank to slide down in a directional manner, preventing the blank from scattering randomly. At the same time, it can also prevent the blank from falling directly onto the surface of the conveyor belt 16, thus buffering the impact force of the blank falling.

[0034] like Figure 2 As shown, the pressing component 1 is located on the side of the side plate 7 away from the discharge head 12. The pressing component 1 is used to provide vertical downward pressure for the shearing process. The pressing component 1 includes a fixed frame 103, which is fixed to one side of the side plate 7 by bolts. A hydraulic cylinder 101 is fixed to the top of the fixed frame 103 by bolts, and one end of the hydraulic cylinder 101 passes through the fixed frame 103 and is fixed to a first slider 102 by bolts. The first slider 102 is fixed to the connecting frame 9. When the hydraulic cylinder 101 is activated, it drives the first slider 102 to move downward, which pushes the connecting frame 9 to move vertically downward along the side plate 7, providing the downward pressure required for the shearing operation. The connecting frame 9 drives the needle roller square blade 10 and the carrier plate 501 to move downward synchronously to complete the shearing operation. It should be noted that the hydraulic cylinder 101 in this application is an actuator in a hydraulic system. It achieves the telescopic function by cooperating with the hydraulic system, and achieves precise control of the telescopic displacement of the hydraulic cylinder piston rod by cooperating with magnetic switches and proximity switches. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0035] It should be noted that the needle roller shearing process is a static load constraint shearing process. The hydraulic cylinder 101 indirectly drives the needle roller square blade 10 to move downward at a constant speed through the opposing movement drive system 2 on one side of the connecting frame 9 to complete the cutting operation of the metal wire. Specifically, the discharge head 12 sends out the metal wire to be processed through the discharge port 13. At this time, the bottom of the needle roller square blade 10 has already contacted the outside of the metal wire through the opposing movement drive system 2. As the hydraulic cylinder 101 continues to advance steadily, the needle roller square blade 10 maintains a low speed and uniform downward movement. The discharge head 12 and the discharge port 13 form an axial limiting support for the outwardly extending needle roller wire, firmly abutting the metal needle roller wire against the side of the end face of the discharge head 12. Subsequently, the needle roller square cutter 10 applies a stable radial shear load to the metal needle roller wire at a uniform speed. There is no instantaneous impact or pressing load during the entire operation. Under the action of bidirectional constraints (axial limiting constraints provided by the discharge port 13 and radial pressing constraints formed by the downward pressing of the needle roller square cutter 10), the metal needle roller wire undergoes uniform plastic shearing and slippage. The metal needle roller wire separates smoothly only along the bottom contact surface of the needle roller square cutter 10, and finally the metal needle roller wire is cut flat. However, at this time, the shearing operation is that the hydraulic cylinder 101 indirectly drives the needle roller square blade 10 to move downward through the opposing moving drive system 2 on one side of the connecting frame 9. This may result in insufficient force on the needle roller square blade 10, causing the needle roller blank to be unable to be cut. At this time, the needle roller square blade 10, the first slider 102 and the connecting frame 9 are connected by the connecting component 3. When the connecting frame 9 moves downward, the shearing force of the hydraulic cylinder 101 can be directly transmitted to the needle roller square blade 10, ensuring sufficient shearing force. Specifically as follows: A connecting assembly 3 for connecting the needle roller square cutter 10 and the first slider 102 is provided on one side. The connecting assembly 3 includes a connecting rod 304, which is fixed to the top inner wall of the connecting frame 9 by bolts and passes through the inside of the needle roller square cutter 10. A sliding groove 303 is opened inside the needle roller square cutter 10. A second slider 302 is slidably connected in the sliding groove 303 and is fixed to the connecting rod 304. When the needle roller square cutter 10 is driven by the opposing movement drive system 2 to move towards the needle roller blank, the second slider 302 can slide relative to the sliding groove 303. The second slider 302 has an insertion hole 306 on one side. The cylinder 301 is fixed to one side of the needle roller square cutter 10 by bolts. The telescopic end of the cylinder 301 passes through the needle roller square cutter 10 and is fixed with an insertion block 305 by bolts. The insertion block 305 is inserted into the insertion hole 306. When the needle roller square cutter 10 contacts the needle roller blank, the insertion block 305 is concentric with the insertion hole 306. Then, the cylinder 301 is activated to push the insertion block 305 into the insertion hole 306, which locks the needle roller square cutter 10 and the connecting frame 9 relative to each other. When the hydraulic cylinder 101 drives the connecting frame 9 to move down, the connecting frame 9 can directly transmit the shearing force to the needle roller square cutter 10 through the locked connecting rod 304 and the second slider 302, avoiding the problem of insufficient shearing force caused by indirect transmission. Meanwhile, since the needle roller square cutter 10 is locked on the connecting frame 9, the gear 203, the first rack 202, the second rack 204 and the self-locking micro gear motor 201 of the opposing movement drive system 2 are also relatively fixed, which prevents the load reaction force from pushing the gear 203 to rotate in the opposite direction during the shearing process, and prevents the first arc surface 11 and the second arc surface 503 from loosening the needle roller blank. This ensures sufficient shearing force and protects the self-locking micro gear motor 201 from reverse load impact, thus extending the service life of the motor. It should be noted that the cylinder 301 in this application is a power actuator that converts the pressure energy of compressed air into mechanical energy. It can be connected to an external air pipe and a solenoid valve and drive the piston to perform linear reciprocating motion by controlling the gas inlet and outlet. It can achieve precise control of the extension and retraction displacement of the piston rod of the cylinder 301 by cooperating with a magnetic switch and a proximity switch. At the same time, the piston rod of the cylinder 301 is made of high-strength alloy steel, and its hardness and strength meet the requirements for shear force transmission. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0036] like Figure 9 and Figure 10 As shown, the offset detection component 6 is disposed on one side of the side plate 7. The offset detection component 6 is used to detect the vertical state of the needle roller square cutter 10. The offset detection component 6 includes two slide rods 602 that are fixed to one side of the side plate 7 by bolts. The connecting frame 9 is slidably connected to one of the slide rods 602 by a slide block. A tension sensor 601 is fixed to one side of the connecting frame 9 by bolts. The other end of the tension sensor 601 is slidably connected to the other slide rod 602 by a slide block. It should be noted that the tension sensor 601 is existing technology. When the elastic body is subjected to tension or pressure and generates strain, the resistance of the strain gauge attached to it changes. This change is converted into an electrical signal output proportional to the load through a Wheatstone bridge. Those skilled in the art can set it according to actual needs, which will not be elaborated here. Under normal conditions, the connecting frame 9 remains vertical, and the tension sensor 601 is within the preset balance range. When the needle roller square cutter 10 shifts position, the connecting frame 9 will tilt synchronously with the needle roller square cutter 10, applying an additional unilateral tension to the tension sensor 601, causing the tension value detected by the tension sensor 601 to exceed the preset balance range. At this time, the equipment can trigger an alarm and stop, reminding the operator to check and adjust the status of the needle roller square cutter 10 in time. After checking that the needle roller square cutter 10 is in normal condition, the alarm can be cleared and the equipment restarted. If the needle roller square cutter 10 is severely worn or damaged, replace it with a new one. After replacement, the tension value detected by the tension sensor 601 will return to the balance range, and the equipment can be put into normal production. This will prevent batch blanks from being out of dimensional accuracy due to the offset of the needle roller square cutter 10, reduce the scrap rate, and ensure molding accuracy.

[0037] In this embodiment, as Figure 3 As shown, a photoelectric switch 14 is fixed to the bottom of the connecting frame 9 by bolts, and the detection end of the photoelectric switch 14 is set facing the needle roller square knife 10. The photoelectric switch 14 is electrically connected to the external feeding mechanism. After the photoelectric switch 14 detects that the needle roller square knife 10 has been reset, the external feeding mechanism starts and pushes the next section of needle roller blank into the discharge port 13, completing the automatic feeding. There is no need for manual detection and judgment of the reset status, which improves the overall automation level of the equipment. It should be noted that the photoelectric switch 14 is existing technology. The photoelectric switch 14 can be of model E3Z-D61. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0038] Working principle of the invention: Before use, the raw material of the needle roller blank to be processed is connected to the straightener through the feeding mechanism and aligned with the discharge port 13 of the discharge head 12. Subsequently, the self-locking micro gear motor 201 is started. The self-locking micro gear motor 201 drives the gear 203 to rotate. The gear 203 synchronously drives the meshing first rack 202 to move downward and the second rack 204 to move upward. That is, it drives the needle roller square cutter 10 to move downward along the first guide rod 205, and at the same time drives the carrier plate 501 and the support block 502 to move upward along the second guide rod 207. This causes the first arc surface 11 at the bottom of the needle roller square cutter 10 and the second arc surface 503 at the top of the two support blocks 502 to move closer to each other, and together cover and clamp the outer periphery of the needle roller blank to be cut at the outlet 13. At the same time, when the needle roller square cutter 10 is driven by the opposing movement drive system 2 to move towards the needle roller blank, the second slider 302 can slide relative to the slide groove 303. When the needle roller square cutter 10 contacts the needle roller blank, the insert block 305 and the insert hole 306 are concentric. Then, start the cylinder 301 to push the insert block 305 into the insert hole 306, which will lock the needle roller square cutter 10 and the connecting bracket 9 relative to each other. Then, the hydraulic cylinder 101 is activated to drive the first slider 102 to move down, pushing the connecting frame 9 to move vertically down along the side plate 7. The connecting frame 9 directly transmits the shearing force to the needle roller square cutter 10 through the locked connecting rod 304 and the second slider 302, and together with the support block 502, it performs the cutting operation of the needle roller blank. While cutting, the connecting frame 9 drives the support block 502 to move downward as a whole. The roller 406 on the outside of the support block 502 slides down the inner wall of the guide frame 402. When the roller 406 moves to the inclined surface 403 at the bottom of the guide frame 402, the tension spring 405 pulls the support block 502 to slide outward along the positioning post 404. The two support blocks 502 open up, and the cut needle blank loses its bottom support and automatically falls from the opening gap. It slides down the inclined guide plate 15 onto the conveyor belt 16, completing the automatic discharge after the cutting operation. Finally, cylinder 301 is activated to reset, insert block 305 is pulled out from insert hole 306, releasing the lock between needle roller square cutter 10 and connecting frame 9. Then, self-locking micro geared motor 201 rotates in reverse, driving gear 203 to reverse. Needle roller square cutter 10 moves upward along first guide rod 205 to reset, and carrier plate 501 and support block 502 move downward along second guide rod 207 to reset. Hydraulic cylinder 101 is activated to reset, driving connecting frame 9 and needle roller square cutter 10 to move upward back to the initial position. Connecting frame 9 drives support block 502 to move upward to reset. As support block 502 moves upward to reset, roller 406 slides up along inclined plane 403 to the plane position of guide frame 402. Inclined plane 403 pushes the two support blocks 502 to overcome the tension of tension spring 405 and move them closer to each other to reset. The distance between the two support blocks 502 is readjusted, waiting for the next shearing operation.

[0039] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change. The electronic components and modules used in this invention can all be commonly used parts on the market that can achieve the specific functions in this case, and the specific models and sizes can be selected and adjusted according to actual needs; The accompanying drawings of the embodiments disclosed in this invention only involve structures relevant to the embodiments disclosed in this invention. Other structures can be referred to with common designs. Unless otherwise specified, the same embodiment and different embodiments of this invention can be combined with each other.

Claims

1. A blank forming device for high-precision bearing needle roller production, characterized in that, include: The frame (8) and side plate (7) are installed on the top of the frame (8). A connecting frame (9) with a bottom opening is provided on one side of the side plate (7). A discharge port (13) for the needle roller blank to pass through is provided on the side plate (7). A needle roller square cutter (10) is installed inside the connecting frame (9) and on one side of the side plate (7); The bottom support system (5) is located inside the connecting frame (9). The bottom support system (5) is used to support the bottom of the needle roller blank during shearing and forming. The bottom support system (5) includes two symmetrically arranged carrier plates (501) and support blocks (502). The carrier plates (501) are installed on the inner walls of both sides of the connecting frame (9), and the two support blocks (502) are located below the needle roller blank. The opposing movement drive system (2) is used to synchronously drive the needle roller square cutter (10) downward and the support block (502) upward to move in opposite directions, so that the needle roller square cutter (10) and the support block (502) together cover the needle roller blank; The pressing assembly (1) is used to drive the bottom support system (5) and the opposing movement drive system (2) on the connecting frame (9) to move downward as a whole, providing punching force for the needle rollers to break.

2. The blank forming equipment for high-precision bearing needle roller production according to claim 1, characterized in that: The bottom support system (5) also includes: The discharge head (12) is located inside the connecting frame (9) and on one side of the side plate (7). A through discharge port (13) is provided in the middle of one side of the discharge head (12). A first arc surface (11) is provided at the bottom of the needle roller square cutter (10), and the curvature of the first arc surface (11) is adapted to the outer circumference of the needle roller blank. Two second arc surfaces (503) are formed on the top of the support block (502), and the curvature of the two second arc surfaces (503) is adapted to the bottom outer perimeter size of the needle roller blank; The opposing movement drive system (2) is set on the inner walls of both sides of the connecting frame (9). The opposing movement drive system (2) is used to drive the needle roller square cutter (10) and the bottom support system (5) to contact the needle roller blank. The opening and closing linkage system (4) is located on the side of the side plate (7) near the support block (502). The opening and closing linkage system (4) is used to drive the two support blocks (502) to open and close.

3. The blank forming equipment for high-precision bearing needle roller production according to claim 2, characterized in that: The opposing motion drive system (2) includes: Two fixed blocks (206) are fixedly connected to the inner walls of the two sides of the connecting frame (9), and two first guide rods (205) and two second guide rods (207) are fixedly connected to the top and bottom of the two fixed blocks (206), respectively. The needle roller square cutter (10) is slidably connected to the two first guide rods (205), and the carrier plate (501) is slidably connected to the two second guide rods (207). The first rack (202) and the second rack (204) are respectively fixedly connected to one side of the needle roller square cutter (10) and one side of one of the carrier plates (501); Gear (203) is rotatably connected to the inner wall of one side of the connecting frame (9), and gear (203) meshes with the first rack (202) and the second rack (204); A self-locking micro geared motor (201) is used to drive the gear (203) to rotate along the axis and is fixedly connected to the outer wall of one side of the connecting frame (9); An offset detection component (6) is provided on one side of the side plate (7). The offset detection component (6) is used to detect the vertical state of the needle roller square cutter (10).

4. The blank forming equipment for high-precision bearing needle roller production according to claim 2, characterized in that: The opening and closing linkage system (4) includes: Mounting bracket (401) is fixedly connected to one side of side plate (7). Two symmetrically arranged guide brackets (402) are fixedly connected to the top of mounting bracket (401). An inclined surface (403) is opened on the opposite side of the two guide brackets (402). The inclined surface (403) is located at the bottom end of the guide bracket (402), and the top of one side of the guide bracket (402) is flat. Multiple positioning posts (404) are evenly and fixedly connected to the opposite side of two support blocks (502), and the positioning posts (404) are slidably connected to the carrier plate (501). The outer side of the positioning posts (404) is provided with elastic components, which are used to push the support blocks (502) closer to the inner side of the guide frame (402). Two rollers (406) are rotatably connected to the opposite side of the support block (502) via bearing seats, and the rollers (406) are in contact with the guide frame (402).

5. The blank forming equipment for high-precision bearing needle roller production according to claim 4, characterized in that: The elastic component includes a tension spring (405) sleeved on the outer layer of the positioning post (404), with one end of the tension spring (405) fixed to the support block (502) and the other end fixed to the carrier plate (501).

6. The blank forming equipment for high-precision bearing needle roller production according to claim 1, characterized in that: The offset detection component (6) includes two slide rods (602) installed on one side of the side plate (7). The connecting frame (9) is slidably connected to one of the slide rods (602) through a slide block. A tension sensor (601) is installed on one side of the connecting frame (9). The other end of the tension sensor (601) is slidably connected to the other slide rod (602) through a slide block.

7. The blank forming equipment for high-precision bearing needle roller production according to claim 1, characterized in that: The pressing assembly (1) includes a fixed frame (103), which is fixedly connected to one side of the side plate (7). A hydraulic cylinder (101) is fixedly connected to the top of the fixed frame (103), and one end of the hydraulic cylinder (101) passes through the fixed frame (103) and is fixedly connected to a first slider (102). The first slider (102) is fixed to the connecting frame (9). A connecting assembly (3) for connecting the needle roller square cutter (10) and the first slider (102) is provided on one side of the needle roller square cutter (10).

8. The blank forming equipment for high-precision bearing needle roller production according to claim 7, characterized in that: The connection component (3) includes: The connecting rod (304) is fixedly connected to the top inner wall of the connecting frame (9), and the connecting rod (304) passes through the inside of the needle roller square cutter (10); A groove (303) is provided inside the needle roller square cutter (10). A second slider (302) is slidably connected inside the groove (303), and the second slider (302) is fixed to the connecting rod (304). An insertion hole (306) is provided on one side of the second slider (302). The cylinder (301) is fixedly connected to one side of the needle roller square cutter (10), and the telescopic end of the cylinder (301) passes through the needle roller square cutter (10) and is fixedly connected to the insert block (305), and the insert block (305) is inserted into the socket (306).

9. The blank forming equipment for high-precision bearing needle roller production according to claim 1, characterized in that: The top of the frame (8) is fixedly connected to an inclined guide plate (15), and the guide plate (15) is located below the discharge port (13). The top of the frame (8) is provided with a conveyor belt (16), and the conveyor belt (16) is located at the bottom of the guide plate (15).

10. A blank forming equipment for high-precision bearing needle roller production according to claim 1, characterized in that: A photoelectric switch (14) is fixedly connected to the bottom of the connecting frame (9), and the detection end of the photoelectric switch (14) is set towards the needle roller square knife (10).

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