A rod part polishing device

Abstract

The application relates to the technical field of polishing devices, and particularly discloses a rod part polishing equipment which comprises a rack, a feeding device and a grinding device, the feeding device comprises: a lifting seat installed on the rack and capable of ascending and descending relative to the grinding device; a fixed cylinder and a rotating cylinder, the fixed cylinder is fixedly installed on the lifting seat, the rotating cylinder is rotationally installed in the fixed cylinder, and an axis of the rotating cylinder is provided with a channel for passing the workpiece; a lower rotating roller group installed at the bottom of the channel, a lifting driving source installed between the lower rotating roller group and the rotating cylinder for controlling the lifting of the lower rotating roller group in the channel, when the gear ring moves relative to the front baffle and the rear baffle, the pushing part pushes the workpiece to move backward, so that the front end of the workpiece can completely pass through the lower rotating roller group and reach the polishing belt, meanwhile, the workpiece is limited by the right roller group and the left roller group, the workpiece angle is prevented from being changed, and thus the polishing of the front end bottom surface of the workpiece is completed.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, and specifically to a grinding device for rod-type parts. Background Technology

[0002] With the increasing demands for workpiece surface quality in the machining field, grinding has become a common technique for precision machining, especially for gear rings, shafts, and other long, strip-shaped metal workpieces. To ensure the flatness and surface roughness of their bottom or side surfaces, continuous grinding with wide-band grinding equipment is typically required. Existing grinding equipment generally includes a frame, a drive wheel assembly, and a grinding belt mounted on the drive wheel. The drive wheel drives the grinding belt in a cyclical motion, bringing the workpiece into contact with the belt to remove material. In actual machining, to ensure stable contact between the workpiece and the grinding belt, a feeding structure is usually required to transport the workpiece to the grinding area, and a support structure is used to position the workpiece. However, for long or irregularly shaped workpieces, simple feeding and support structures alone are insufficient to guarantee stability during machining, and also make continuous machining of different parts of the workpiece difficult. Therefore, higher requirements are placed on the feeding and positioning structures.

[0003] Chinese patent document CN210360753U discloses a surface grinding machine for metal products, including a machine body, a fixed frame, and a dust collection box. A support plate is provided on the upper surface of the machine body. The rotating rollers are connected by a sanding belt. The fixed frame is located on the upper surface of the machine body. A first hydraulic cylinder is located at the inner top of the fixed frame, and both the first and second hydraulic cylinders have supports at their inner ends. A baffle with a trapezoidal groove is located at the inner end of each support, and the baffle is connected to a movable frame through the trapezoidal groove. A hydraulic telescopic rod is provided on the inner end face of the movable frame, and a bolt is located at the inner end of the movable frame, penetrating the movable frame and contacting the outer surface of the baffle. The dust collection box is connected to a vacuum cleaner. This surface grinding machine for metal products can use the first and second hydraulic cylinders to push the metal product fixed at its inner end to contact the upper and lower surfaces of the sanding belt for grinding.

[0004] Chinese patent document CN218874924U discloses a centerless belt abrasive grinding machine, including a grinding machine tool, a belt abrasive grinding machine, a slide, a guide wheel, and a control turntable. Key technical features include the belt abrasive grinding machine located on one side of the grinding machine tool, the slide on the other side, the control turntable on the side wall of the grinding machine tool, the guide wheel on the slide, symmetrical fixed seats on the slide, rotating grooves on the fixed seats, and a support rod rotatably connected within the rotating grooves. A waste material passage is formed on the grinding machine tool, with a collection box at the bottom of the waste material passage. A sliding plate is symmetrically arranged on the inner wall of the collection box, and mounting grooves and passageways are symmetrically formed on the inner wall of the collection box located on the sliding plate. A filter frame is provided on the sliding plate, comprising a fine filter screen and a square frame with slots. An insert slot is formed through the side wall of the passageway, with an insert block in the slot. This allows the support rod to rotate with the workpiece, reducing friction on the workpiece and collecting waste materials separately, reducing resource waste and environmental pollution.

[0005] Therefore, existing surface grinding equipment still suffers from the inconvenience of adjusting the workpiece angle during use. Especially when grinding the bottom surface of long workpieces, to prevent vibration or skew during grinding, one end of the workpiece usually needs to be fixed or limited. In this case, after the front and middle parts of the workpiece are ground, if grinding the rear end is required, the workpiece often needs to be removed from the equipment, its orientation reversed, and repositioned before grinding the rear end. This process not only involves numerous steps but also increases the time spent on manual handling and repositioning. Re-clamping can also easily cause workpiece positional deviations, affecting the continuity and consistency between the two grinding areas. Therefore, a grinding machine structure is needed that allows for adjustment of the workpiece angle during grinding and enables continuous grinding of the bottom surface of long workpieces without removing the workpiece or repositioning it. Summary of the Invention

[0006] This invention provides a grinding device for rod-shaped parts, which aims to solve the problem in related technologies that the front and rear positions of the workpiece need to be changed in order to grind the front and rear ends of the workpiece during planar grinding.

[0007] A grinding device for rod-shaped parts includes a frame, a feeding device, and a grinding device, wherein the feeding device includes: The lifting seat, mounted on the frame, can rise and fall relative to the grinding device; The fixed cylinder and the rotating cylinder are fixedly installed on the lifting seat, and the rotating cylinder is rotatably installed inside the fixed cylinder. A channel for the workpiece to pass through is provided at the axis of the rotating cylinder. The lower rotating roller assembly is installed at the bottom of the channel, and a lifting drive source for controlling the lower rotating roller assembly to rise and fall within the channel is installed between the lower rotating roller assembly and the rotating cylinder. The upper rotating roller assembly is installed at the top of the channel and can slide back and forth relative to the channel; The pushing assembly includes a pushing part and a driving mechanism. The pushing part is mounted on the top of the channel. When the upper rotating roller group slides backward in the channel, the pushing part slides backward relative to the upper rotating roller group, so that the pushing part abuts against the front end of the workpiece and pushes the workpiece to slide backward.

[0008] Its effects are as follows: Through the cooperation of the lifting seat and the fixed cylinder, the entire rotating cylinder can be adjusted vertically, ensuring that the bottom surface of workpieces of different specifications can maintain a suitable contact position with the grinding belt of the grinding device, thus improving the equipment's adaptability to workpieces of different sizes; through the rotational cooperation between the rotating cylinder and the gear ring, the workpiece can be angled around the axis within the channel, enabling the switching of different processing surfaces without changing the workpiece clamping state, reducing repetitive clamping operations; the clamping structure formed by the lower and upper rotating roller groups provides stable support and limitation for the workpiece during conveying and grinding, ensuring the consistency of the workpiece's posture during movement; simultaneously, through the linkage between the pushing component and the gear ring, the pushing action can be achieved by relying on the existing transmission structure, eliminating the need for an additional independent driving source, simplifying the overall structure while ensuring continuous pushing. Through the coordinated operation of the above structures, the workpiece can achieve integrated operation of height adjustment, angle adjustment and continuous feeding throughout the entire process of entering the grinding area. This ensures that each section of the workpiece can enter the grinding belt in sequence and complete continuous processing, effectively avoiding the problem of incomplete processing caused by insufficient workpiece stroke or discontinuous feeding in traditional structures.

[0009] Preferably, a guide rod and a hydraulic cylinder are vertically mounted on the frame. The lifting seat is slidably mounted on the guide rod, and the piston rod of the hydraulic cylinder is connected to the lifting seat. The guide rod guides the lifting seat, keeping it stable during lifting and avoiding swaying. At the same time, the hydraulic cylinder provides a stable lifting driving force, enabling the entire feeding device to be precisely adjusted in the vertical direction. This ensures that the bottom surface of the workpiece maintains a suitable contact position with the grinding belt of the grinding device, improving the grinding quality.

[0010] Preferably, the rotating cylinder includes a front baffle, a front slide plate, a gear ring, a rear slide plate, and a rear baffle. The front baffle, gear ring, and rear baffle are coaxially and fixedly connected together by a connecting rod. The front slide plate and the rear slide plate are fixedly connected together by a second connecting rod, and the second connecting rod is slidably connected to the gear ring. The upper rotating roller assembly is rotatably mounted on the second connecting rod in the front-rear direction. By forming the front baffle, gear ring, and rear baffle into an integral structure, the rotating cylinder rotates as a whole under the rotation drive, thereby adjusting the posture of the workpiece. At the same time, through the installation space formed by the front slide plate and the rear slide plate, the upper rotating roller assembly can rotate within the installation space and drive the workpiece to move under the action of the pushing component, thereby realizing the linkage between feeding and pushing.

[0011] Preferably, a rotary drive source is installed on the fixed cylinder, and a gear is installed at the output end of the rotary drive source to mesh with the gear ring. The rotary drive source drives the gear to rotate, causing the gear ring to rotate, which in turn drives the entire rotary cylinder to rotate, causing the workpiece to change angle within the channel. This allows the grinding surface of the workpiece to be adjusted as needed, enabling multi-angle processing and improving the applicability of the equipment.

[0012] Preferably, two sets of rollers are installed on the inner bottom of the fixed cylinder. The two sets of rollers support the front baffle and the rear baffle respectively, and limit the front baffle and the rear baffle in the front and rear directions. The rollers support the rotating cylinder, so that the rotating cylinder and the fixed cylinder form rolling contact during rotation, thereby reducing frictional resistance. At the same time, the rollers limit the front baffle and the rear baffle axially, preventing the rotating cylinder from moving back and forth during rotation and improving operational stability.

[0013] Preferably, the upper rotating roller group consists of a right roller group and a left roller group, with a mounting groove for mounting the pushing component formed between them. The right roller group and the left roller group clamp and limit the workpiece, keeping the workpiece stable during conveying and pushing. At the same time, a mounting space is formed between them for arranging the pushing component, thereby achieving a compact structural arrangement.

[0014] Preferably, the pushing part consists of a sliding block that is slidably installed in the mounting groove and a push plate hinged to the bottom of the sliding block. The push plate is inverted L-shaped, so that the maximum rotation angle of the push plate relative to the sliding block is 90°. Through the hinge structure of the push plate, it can automatically flip and make way when the workpiece enters, and after the workpiece enters, it can reset under its own gravity and block the front end of the workpiece, thereby realizing the function of blocking and pushing the workpiece and improving the reliability of pushing.

[0015] Preferably, the driving mechanism includes a closed-loop driving belt with guide wheels at both ends. The guide wheels are rotatably installed in the mounting groove. A section at the bottom of the driving belt is connected to a sliding block, and a section at the top of the driving belt is connected to a gear ring. The gear ring and the sliding block are connected by the driving belt. When relative movement occurs between the gear ring and the front and rear baffles, the driving belt drives the sliding block to move along the channel direction, thereby driving the push plate to push the workpiece, realizing the linkage between the structures. No separate driving source is required, and the structure is simple and highly reliable.

[0016] Preferably, one of the connecting rods has a rack along its length, and a rotary drive source is fixedly installed on the gear ring. The output end of the rotary drive source is equipped with a gear that meshes with the rack. The rotary drive source drives the gear to mesh with the rack, causing the connecting rod to move back and forth relative to the gear ring, thereby driving the upper rotating roller group and the pushing assembly to move as a whole, thus realizing the driving source for feeding and pushing actions.

[0017] Preferably, the ends of the right and left roller groups that are far apart from each other are inclined downwards, so that they form an angle with the lower rotating roller group. By forming an angled structure, the workpiece can be pressed by the right and left roller groups when it is lifted by the lower rotating roller group, thereby forming a stable clamping, avoiding the workpiece from shaking or shifting during the conveying process, and improving the processing stability.

[0018] By adopting the above technical solution, the beneficial effects of the present invention are as follows: When grinding a workpiece, first insert the workpiece into the channel of the rotating cylinder. The lifting seat rises and falls, aligning the bottom surface of the workpiece with the grinding belt of the grinding device. The rotating cylinder is rotated by the gear ring, adjusting the angle of the workpiece to change the grinding surface. The top of the workpiece abuts against the right and left rollers of the upper rotating roller group, achieving workpiece positioning. The lower rotating roller group drives the workpiece towards the grinding device. When the front end of the workpiece is completely inside the channel, the push plate passes over the workpiece and hangs freely under its own weight, blocking the front end of the workpiece. At this time, the second rotary drive source is activated. Through the meshing of gear two and rack, the front and rear baffles move backward relative to the gear ring. Since the bottom section of the drive belt is connected to the sliding block and the top section is connected to the gear ring, when the gear ring moves relative to the front and rear baffles, the drive belt will drive the sliding block. The block slides backward relative to the upper rotating roller group, and the pusher plate also slides backward, pushing the workpiece backward so that the front end of the workpiece can completely pass through the lower rotating roller group and reach the grinding belt. At the same time, the right and left roller groups limit the workpiece to prevent the workpiece angle from changing, thus completing the grinding of the front bottom surface of the workpiece. This avoids the need to remove the workpiece for repositioning, which would affect the grinding efficiency. Furthermore, through the cooperation of the pushing component and the upper and lower rotating roller groups, the workpiece remains in a restricted state during the process of being pushed to the grinding belt. The pusher plate only undertakes the pushing function along the channel direction, while the posture of the workpiece is maintained by the upper and lower rotating roller groups. Therefore, it can reduce the deflection caused by single-point pushing and ensure that the front end, middle and subsequent areas of the workpiece maintain a more consistent contact state when entering the grinding device, improving the continuity of the entire grinding surface. Attached Figure Description

[0019] Figure 1 This is a side view of the present invention.

[0020] Figure 2 This is a schematic diagram of the rotating cylinder in this invention.

[0021] Figure 3 This is a cross-sectional view of the rotating cylinder in this invention.

[0022] Figure 4 This is a schematic diagram of the structure of the front baffle, gear ring, and rear baffle in this invention.

[0023] Figure 5 This is a schematic diagram of the upper rotating roller assembly in this invention.

[0024] Figure 6 This is a top view of the workpiece when its front end contacts the grinding device during the use of this invention.

[0025] Figure 7 This is a schematic diagram of the structure when the rear sliding plate and the rear baffle are misaligned in this invention.

[0026] Figure label: 1. Frame; 11. Guide rod; 12. Hydraulic cylinder one; 2. Grinding device; 3. Feeding device; 31. Lifting seat; 32. Fixed cylinder; 321. Drag wheel assembly; 322. Rotary drive source one; 323. Gear one; 33. Rotary cylinder; 331. Front baffle; 332. Front slide plate; 333. Gear ring; 3331. Rotary drive source two; 3332. Gear two; 334. Rear slide plate; 335. Rear baffle; 336. Connecting rod one; 337. Connecting rod two; 3371. Rack; 34. Lower rotating roller assembly; 35. Upper rotating roller assembly; 36. Pushing assembly; 361. Sliding block; 362. Push plate; 363. Drive belt; 364. Guide wheel. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] like Figures 1-7 As shown, a rod-type parts grinding equipment includes a frame 1, a grinding device 2 mounted on the frame 1, and a feeding device 3 disposed on the frame 1. The feeding device 3 is located on one side of the grinding device 2 and is used to transport the workpiece to be processed to the grinding device 2 and to adjust the height, posture, and continuous feeding of the workpiece in the front and back directions during the transport process. The feeding device 3 includes a lifting seat 31, a fixed cylinder 32 fixedly installed on the lifting seat 31, a rotating cylinder 33 rotatably installed inside the fixed cylinder 32, a lower rotating roller group 34 set at the bottom of the channel of the rotating cylinder 33, an upper rotating roller group 35 set at the top of the channel, and a pushing component 36 set between the upper rotating roller groups 35. The axis of the rotating cylinder 33 forms a channel for the workpiece to pass through. The lower rotating roller group 34 is used to support the workpiece and drive the workpiece to move along the channel towards the grinding device 2. The upper rotating roller group 35 is used to clamp and limit the workpiece. The pushing component 36 is used to push the workpiece to continue to move forward after the workpiece enters the channel, so that the front end of the workpiece can completely enter the grinding area, thereby realizing continuous grinding of the entire bottom surface of the workpiece without the need to change the workpiece back and forth during the processing.

[0029] The grinding device 2 is mounted on the frame 1 and includes a drive base and drive wheel assemblies mounted on the drive base. The drive wheel assemblies are spaced apart along the front-to-back direction on the frame 1. A grinding belt is wound around each drive wheel to form a closed loop. A drive motor drives one of the drive wheels to rotate, causing the grinding belt to circulate in a predetermined direction. The upper surface of the grinding belt forms a processing area. When the bottom surface of the workpiece contacts the upper surface of the grinding belt, continuous grinding is performed on the bottom surface of the workpiece under the action of relative motion. The running direction of the grinding belt is preferably set to back to front, so that the workpiece entering the processing area is always subjected to a backward frictional force during the grinding process, which helps to stabilize the position of the workpiece.

[0030] The lifting seat 31 is vertically mounted on the frame 1. A guide rod 11 and a hydraulic cylinder 12 are fixedly installed on the frame 1. The guide rod 11 is a cylindrical rod structure, vertically mounted and fixedly connected to the frame 1. The lifting seat 31 is sleeved on the guide rod 11, forming a sliding fit. The cylinder body of the hydraulic cylinder 12 is fixedly mounted on the frame 1, and its piston rod is fixedly connected to the lifting seat 31. Driven by the extension and retraction of the hydraulic cylinder 12, the lifting seat 31 moves up and down along the guide rod 11, thereby driving the fixed cylinder 32 and the rotating cylinder 33 to rise and fall as a whole, ensuring that the bottom surface of the workpiece in the channel is precisely aligned with the grinding belt of the grinding device 2. This structure can accommodate workpieces of different diameters or thicknesses, improving the applicability of the equipment.

[0031] The fixed cylinder 32 is fixedly installed on the lifting base 31. It has a hollow cylindrical structure and forms a space inside to accommodate the rotating cylinder 33. The inner wall of the fixed cylinder 32 and the outer wall of the rotating cylinder 33 form a rotational fit relationship, allowing the rotating cylinder 33 to rotate around its own axis. Two sets of rollers 321 are arranged on the inner bottom surface of the fixed cylinder 32 along the front-rear direction. The two sets of rollers 321 are located at the front and rear positions respectively and contact the front baffle 331 and the rear baffle 335 of the rotating cylinder 33 respectively, thereby supporting the rotating cylinder 33 and preventing it from directly contacting the bottom surface of the fixed cylinder 32 during rotation, thus reducing frictional resistance. At the same time, the two sets of rollers 321 provide axial limit to the front baffle 331 and the rear baffle 335, preventing the rotating cylinder 33 from moving back and forth during rotation and improving the overall operational stability.

[0032] The rotating cylinder 33 is located inside the fixed cylinder 32 and includes a front baffle 331, a front slide plate 332, a gear ring 333, a rear slide plate 334, and a rear baffle 335. The front baffle 331, the gear ring 333, and the rear baffle 335 are coaxially fixedly connected by a connecting rod 336 to form an integral rigid structure. This structure can rotate around its axis under rotational drive. The front slide plate 332 and the rear slide plate 334 are fixedly connected by a connecting rod 337. The connecting rod 337 passes through the gear ring 333 axially and forms a sliding fit with the gear ring 333, allowing the connecting rod 337 to move back and forth relative to the gear ring 333 along the channel direction, thereby driving the front slide plate 332 and the rear slide plate 334 to move back and forth as a whole.

[0033] The gear ring 333 is located in the middle of the rotating cylinder 33, and its outer circumference forms a toothed structure. A rotary drive source 322 is installed on the side wall of the fixed cylinder 32. The rotary drive source 322 is preferably a servo motor. Its output end is provided with a gear 323 that meshes with the gear ring 333. By driving the gear 323 to rotate, the gear ring 333 rotates around the axis, thereby driving the front baffle 331, the connecting rod 336 and the rear baffle 335 to rotate as a whole, thereby realizing the adjustment of the workpiece posture and enabling the surfaces of the workpiece at different angles to contact the grinding belt, thereby completing multi-angle grinding.

[0034] A rack 3371 is provided on the connecting rod 337 along its length. A rotary drive source 3331 is fixedly installed on the gear ring 333. The rotary drive source 3331 is preferably a servo motor. Its output end is provided with a gear 3332 that meshes with the rack 3371. The rotary drive source 3331 drives the gear 3332 to rotate, causing the rack 3371 to produce linear motion, thereby driving the connecting rod 337 to move back and forth along the axial direction. This further drives the front slide plate 332 and the rear slide plate 334 to move synchronously. This movement process is used to realize the secondary feeding of the workpiece and the linkage with the push assembly 36.

[0035] The lower rotating roller assembly 34 is located at the bottom of the channel and is installed between the front baffle 331 and the rear baffle 335. The lower rotating roller assembly 34 includes multiple rotating rollers arranged along the channel direction, of which at least one rotating roller is an active roller driven by a motor, and the remaining rotating rollers are driven rollers and are mounted on the structural components through support shafts. A lifting drive source is provided between the lower rotating roller assembly 34 and the rotating cylinder 33. The lifting drive source is preferably a hydraulic rod or an electric push rod, which drives the lower rotating roller assembly 34 to move up and down as a whole, so that it can contact the bottom of the workpiece and support the workpiece. When the active roller rotates, the workpiece is driven to move along the channel towards the grinding device 2 by friction.

[0036] The upper rotating roller group 35 is located at the top of the channel and consists of a right roller group and a left roller group. The right roller group and the left roller group are respectively installed between the front slide plate 332 and the rear slide plate 334, and move back and forth synchronously with the connecting rod 337. The ends of the right roller group and the left roller group that are far apart from each other are inclined downward, thus forming an angle structure with the lower rotating roller group 34. When the lower rotating roller group 34 rises and lifts the workpiece, the upper surface of the workpiece contacts the right roller group and the left roller group, thus forming a three-point clamping structure to stably limit the workpiece and prevent the workpiece from swinging or deviating during the conveying and grinding process.

[0037] Before the workpiece enters the channel of the rotating cylinder 33, the height of the lifting seat 31 is adjusted according to the cross-sectional dimensions of the workpiece and the position of the surface to be ground, so that the center height of the channel of the rotating cylinder 33 corresponds to the position of the grinding belt of the grinding device 2. After the workpiece enters the channel, the lower rotating roller group 34 is in a descending state, allowing the workpiece to pass smoothly into the rotating cylinder 33. When the workpiece passes into the predetermined position, the lifting drive source drives the lower rotating roller group 34 to rise, so that the lower rotating roller group 34 contacts the bottom of the workpiece and lifts the workpiece upward until it contacts the upper rotating roller group 35. At this time, the right roller group and the left roller group are located on both sides above the workpiece, and cooperate with the lower rotating roller group 34 to form a three-way limit, so that the workpiece is not easy to deviate left or right during subsequent conveying and grinding, nor is it easy to rotate unexpectedly around its own axis.

[0038] When it is necessary to change the grinding surface of the workpiece, the rotary drive source 322 drives the gear 323 to rotate, which in turn drives the gear ring 333 to rotate. Since the gear ring 333 is fixedly connected to the front baffle 331 and the rear baffle 335 through the connecting rod 336, the front baffle 331, the gear ring 333, and the rear baffle 335 rotate synchronously. The workpiece is held in the channel by the lower rotating roller group 34 and the upper rotating roller group 35. When the rotating cylinder 33 rotates, it drives the workpiece to change its angle synchronously, so that different surfaces of the workpiece can face the grinding belt of the grinding device 2. In this way, the workpiece can be adjusted for the processing angle without being removed from the equipment, reducing the positional deviation caused by reclamping.

[0039] An installation groove is formed between the right roller group and the left roller group. The pushing component 36 is disposed in the installation groove. The pushing component 36 includes a sliding block 361, a push plate 362, and a drive belt 363. The sliding block 361 is slidably installed in the installation groove in the front-back direction. The push plate 362 is hinged to the bottom of the sliding block 361 through a rotating shaft. The push plate 362 has an inverted L-shaped structure. Its upper end forms a limiting contact with the sliding block 361, thereby limiting its maximum rotation angle. When there is no external force, the push plate 362 swings downward under the action of gravity, so that its lower end can enter the channel and be located at the front end of the workpiece.

[0040] The drive belt 363 is a closed-loop structure, which is wound around the guide wheels 364 located at both ends of the mounting groove. The guide wheels 364 are mounted on the structural component through a rotating shaft and can rotate freely. The lower part of the drive belt 363 is fixedly connected to the sliding block 361, and the upper part of the drive belt 363 is fixedly connected to the toothed ring 333. Thus, when the drive belt 363 generates relative movement between the toothed ring 333 and the connecting rod 337, it can drive the sliding block 361 to move along the channel direction.

[0041] During the process of the workpiece entering the channel, when the front end of the workpiece moves backward, the push plate 362 flips upward around the hinge point under the pushing action of the workpiece, so that the workpiece can pass smoothly. When the front end of the workpiece has completely entered the channel, the push plate 362 resets under the action of gravity and falls to the position of the front end of the workpiece, forming a blockage.

[0042] The push plate 362 is in a naturally drooping state when the workpiece is not in the channel. When the workpiece enters from the front end of the channel and moves backward, the front end of the workpiece first contacts the lower part of the push plate 362. After being pushed by the workpiece, the push plate 362 flips upward around its hinge point with the sliding block 361, thus making way for the workpiece to pass through. After the front end of the workpiece passes the push plate 362, the push plate 362 loses its pushing effect on the workpiece and returns to its original position under its own gravity, located on one side of the front end of the workpiece. Since the push plate 362 is inverted L-shaped, its upper end forms a limiting contact with the sliding block 361, preventing the push plate 362 from continuing to swing forward. Therefore, during subsequent pushing, the push plate 362 can stably abut against the front end of the workpiece and apply a pushing force to the workpiece.

[0043] When the second rotary drive source 3331 is started, the second gear 3332 meshes with the rack 3371 and drives the second connecting rod 337 to move in the front-to-back direction. The front slide plate 332, the rear slide plate 334, and the upper rotating roller group 35 installed therebetween move synchronously with the second connecting rod 337. Since one end of the drive belt 363 is connected to the sliding block 361 and the other end is connected to the gear ring 333, and the gear ring 333 serves as a relatively fixed connection reference in this process, when the second connecting rod 337 and the upper rotating roller group 35 move back and forth relative to the gear ring 333, the drive belt 363 moves around the guide wheel 364, and drives the sliding block 361 to move relative to the upper rotating roller group 35. The sliding block 361 drives the push plate 362 to move. After the push plate 362 abuts against the front end of the workpiece, it pushes the workpiece to continue moving in the direction of the grinding device 2, so that the front end of the workpiece can completely pass through the lower rotating roller group 34 and reach the grinding belt.

[0044] In the specific working process, the workpiece to be processed is first inserted into the channel along the axis of the rotating cylinder 33. The lifting seat 31 is adjusted by the hydraulic cylinder 12 so that the bottom surface of the workpiece is at the same height as the grinding belt of the grinding device 2. Then, the rotary drive source 322 is started, causing the gear ring 333 to drive the rotating cylinder 33 to rotate, thereby adjusting the posture of the workpiece so that the surface to be processed faces the grinding belt. Then, the lower rotating roller group 34 is started, causing it to rise and contact the bottom of the workpiece, while simultaneously driving the drive roller to rotate, so that the workpiece moves along the channel towards the grinding device 2. When the front end of the workpiece is completely inside the channel, the push plate 3... 62 is reset and blocked at the front end of the workpiece. At this time, the second rotary drive source 3331 is started, causing the second connecting rod 337 to move backward, thereby driving the upper rotary roller group 35 and the sliding block 361 to move backward as a whole. Since the drive belt 363 is connected to the gear ring 333, the drive belt 363 synchronously drives the sliding block 361 to move backward, causing the push plate 362 to push the workpiece to continue moving forward, so that the front end of the workpiece completely passes through the lower rotary roller group 34 and enters the grinding belt area. During this process, the upper rotary roller group 35 always limits the workpiece to prevent the workpiece from deviating, thereby realizing continuous grinding of the front end and middle of the workpiece.

[0045] During this pushing process, the lower rotating roller group 34 provides support to the bottom of the workpiece, the upper rotating roller group 35 limits the top and sides of the workpiece, and the pusher plate 362 applies a pushing force along the channel direction only to the front end of the workpiece. The three work together to maintain the original angle of the workpiece during forward movement, avoiding workpiece skewing caused by single-point pushing. As a result, when the front and middle parts of the workpiece pass through the grinding belt in sequence, a continuous and consistent contact state can be maintained, making it less likely for steps or discontinuous marks to appear between the grinding areas.

[0046] After a workpiece is ground, the second rotary drive source 3331 rotates in the reverse direction, causing the second gear 3332 to drive the rack 3371 to move in the reverse direction. The second connecting rod 337, the front slide plate 332, the rear slide plate 334, and the upper rotating roller group 35 return to their initial positions. At the same time, the drive belt 363 moves in the reverse direction, causing the sliding block 361 and the push plate 362 to reset. Then, the lifting drive source lowers the lower rotating roller group 34, releasing the clamping of the workpiece between the lower rotating roller group 34 and the upper rotating roller group 35. The ground workpiece is then removed, and a new workpiece is inserted into the channel of the rotating cylinder 33. The above process is repeated to perform continuous processing.

[0047] Through the above structure and its cooperation, the workpiece can be continuously processed along the entire bottom surface without needing to be swapped back and forth during the entire grinding process. At the same time, the cooperation of lifting adjustment, angle adjustment and clamping limit structure improves processing stability and processing efficiency.

[0048] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A grinding device for rod-shaped parts, comprising a frame (1), a feeding device (3), and a grinding device (2), characterized in that, The feeding device (3) includes: The lifting seat (31) is mounted on the frame (1) and can rise and fall relative to the grinding device (2); The fixed cylinder (32) and the rotating cylinder (33) are fixedly installed on the lifting seat (31) and the rotating cylinder (33) is rotatably installed inside the fixed cylinder (32). A channel for the workpiece to pass through is provided at the axis of the rotating cylinder (33). The lower rotating roller assembly (34) is installed at the bottom of the channel, and a lifting drive source for controlling the lower rotating roller assembly (34) to rise and fall in the channel is installed between the lower rotating roller assembly (34) and the rotating cylinder (33); The upper rotating roller assembly (35) is mounted on the top of the channel and is capable of sliding back and forth relative to the channel; The pushing assembly (36) includes a pushing part and a driving mechanism. The pushing part is installed on the top of the channel. When the upper rotating roller group (35) slides to the rear of the channel, the pushing part slides to the rear relative to the upper rotating roller group (35), so that the pushing part abuts against the front end of the workpiece and pushes the workpiece to slide to the rear.

2. The grinding equipment for rod-shaped parts according to claim 1, characterized in that, The frame (1) is vertically mounted with a guide rod (11) and a hydraulic cylinder (12). The lifting seat (31) is slidably mounted on the guide rod (11), and the piston rod of the hydraulic cylinder (12) is connected to the lifting seat (31).

3. The grinding equipment for rod-shaped parts according to claim 1, characterized in that, The rotating cylinder (33) includes a front baffle (331), a front slide plate (332), a gear ring (333), a rear slide plate (334), and a rear baffle (335). The front baffle (331), the gear ring (333), and the rear baffle (335) are coaxially and fixedly connected together by a connecting rod (336). The front slide plate (332) and the rear slide plate (334) are fixedly connected together by a connecting rod (337), and the connecting rod (337) and the gear ring (333) are slidably connected back and forth. The upper rotating roller group (35) is rotatably mounted on the connecting rod (337) in the front and back direction.

4. The grinding equipment for rod-shaped parts according to claim 3, characterized in that, A rotary drive source (322) is installed on the fixed cylinder (32), and a gear (323) that meshes with the gear ring (333) is installed at the output end of the rotary drive source (322).

5. The grinding equipment for rod-like parts according to claim 3, characterized in that, The inner bottom of the fixed cylinder (32) is equipped with two sets of towing wheels (321), which support the front baffle (331) and the rear baffle (335) respectively, and limit the front baffle (331) and the rear baffle (335) in the front and rear directions.

6. The grinding equipment for rod-shaped parts according to claim 5, characterized in that, The upper rotating roller group (35) consists of a right roller group and a left roller group, with a mounting groove for mounting the push assembly (36) formed between them.

7. The grinding equipment for rod-like parts according to claim 6, characterized in that, The pushing part consists of a sliding block (361) that is slidably installed in the mounting groove and a push plate (362) hinged to the bottom of the sliding block (361). The push plate (362) is inverted L-shaped, so that the maximum rotation angle of the push plate (362) relative to the sliding block (361) is 90°.

8. The grinding equipment for rod-like parts according to claim 7, characterized in that, The drive mechanism includes a closed-loop drive belt (363), with guide wheels (364) at both ends of the drive belt (363). The guide wheels (364) are rotatably installed in the mounting groove. A section at the bottom of the drive belt (363) is connected to a sliding block (361), and a section at the top of the drive belt (363) is connected to a gear ring (333).

9. The grinding equipment for rod-like parts according to claim 8, characterized in that, One of the connecting rods (337) has a rack (3371) along its length direction, and a rotary drive source (3331) is fixedly installed on the gear ring (333). The output end of the rotary drive source (3331) is equipped with a gear (3332) that meshes with the rack (3371).

10. The grinding equipment for rod-shaped parts according to any one of claims 6-9, characterized in that, The ends of the right and left roller groups that are far apart from each other are tilted downwards, so that they form an angle with the lower rotating roller group (34).

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