An automatic discharging centerless grinding machine and an automatic discharging machine for feeding the centerless grinding machine

Abstract

The application discloses an automatic discharging centerless grinding machine and an automatic discharging machine for feeding of the centerless grinding machine, and belongs to the technical field of centerless grinding machines.The automatic discharging machine comprises a buffer discharging device, a first grinding wheel, a second grinding wheel and an automatic feeding device on the side of the buffer discharging device, and the buffer discharging device is sequentially provided with a base, a trapezoidal plate and a guide piece from left to right.The automatic feeding device is provided with a conveying device, a pushing device and a clamping device.In the application, a steel bar falling between the first grinding wheel and the second grinding wheel can be conveyed to the trapezoidal plate by means of a frame body and a first motor driving a conveying wheel to rotate, and finally rolled to the ground through the guide piece, so that the concave, deformation and scratch on the surface of the steel bar caused by the impact of the high falling height are avoided, the automatic discharging function is realized, and the automatic feeding function of the centerless grinding machine is realized by cooperation of the conveying device and the clamping device in the automatic feeding device.

Description

Technical Field

[0001] This invention relates to the field of centerless grinding machines, specifically to an automatic feeding centerless grinding machine and an automatic feeding machine for the centerless grinding machine. Background Technology

[0002] A centerless grinder is a type of grinder that does not require the workpiece to be positioned by an axis for grinding. It mainly consists of three mechanisms: a grinding wheel, an adjusting wheel, and a workpiece support. The grinding wheel is responsible for the actual grinding work, the adjusting wheel controls the rotation of the workpiece and the feed rate of the workpiece, and the workpiece support supports the workpiece during grinding. These three components can be combined in several ways, except when grinding is stopped, but the principle is the same. However, existing centerless grinders require manual assistance during loading and unloading, which significantly impacts work efficiency. If the steel pipe is placed too high without manual assistance during loading, its natural fall will impact the grinding wheel, causing the grinding wheel surface to be dented. Furthermore, without manual assistance during unloading, the processed steel bar will fall directly to the ground from the drop outlet, and the surface of the processed steel bar will be dented and deformed upon impact with the ground. Summary of the Invention

[0003] The present invention provides an automatic feeding centerless grinder and an automatic feeding machine for feeding the centerless grinder, which overcomes the shortcomings described in the background art.

[0004] The technical solution adopted by this invention to solve its technical problem is: An automatic feed-out centerless grinder includes a buffer feed-out device, a first grinding wheel, and a second grinding wheel. The buffer feed-out device is located between the first and second grinding wheels. From left to right, the buffer feed-out device includes a base, a trapezoidal plate, and a guide member. A frame is provided on the upper end of the base. The base is connected to the lower end of the frame through multiple third cylinders. The frame is located directly below the first and second grinding wheels. The upper end of the frame has concave grooves extending to both the front and rear ends.

[0005] A preferred technical solution: The frame is provided with a transmission wheel and a first motor. The first motor is located on the side of the frame, while the transmission wheel is located in the middle of the concave groove of the frame. The output shaft of the first motor passes through the frame and is connected to the axis of the transmission wheel.

[0006] A preferred technical solution: The side of the conveyor wheel has a stepped edge that deepens layer by layer, and multiple rubber buffers are provided at equal intervals on the circumference of the stepped edge. Each rubber buffer has a conical structure and a deformation cavity for deformation.

[0007] A preferred technical solution: the deformation cavity has a V-shaped structure, and a first magnetic block is provided on both sides of the upper end of the deformation cavity, while a second magnetic block is provided on both sides of the lower end of the deformation cavity. The first magnetic block and the second magnetic block are like poles and repel each other.

[0008] A preferred technical solution: A reinforcing rib is provided on the left and right sides of the deformation cavity. The reinforcing rib is made of rubber, and each reinforcing rib has an angled notch on its inner side. The end with the larger diameter of the angled notch faces the deformation cavity so that the reinforcing rib can support and restore the rubber buffer when it deforms.

[0009] A preferred technical solution: The upper end of both the trapezoidal plate and the guide member has a discharge groove, the discharge groove on the guide member is connected to the discharge groove of the guide member, and the discharge groove of the guide member extends to one side of the guide member, and the discharge groove of the guide member is inclined.

[0010] A preferred technical solution: The surface of the discharge groove of the guide member is provided with an inclined buffer block and a rubber strip. The inclined buffer block is aligned with the center line of the discharge groove of the trapezoidal plate, and the rubber strip is located on the side of the discharge groove of the guide member away from the inclined buffer block.

[0011] An automatic feeding machine includes an automatic feeding device located on the side of a buffer feeding device. The automatic feeding device is equipped with a conveying device, a pushing device, and a clamping device. It has an inlet and an outlet. The conveying device and the pushing device are both located within the automatic feeding device, while the clamping devices are symmetrically arranged on both sides of the outlet. The lower end of the clamping device protrudes from the outlet surface. The conveying device includes symmetrically arranged drive wheels and a transmission belt. One drive wheel is externally connected to a second motor for rotation. The two drive wheels are connected by the transmission belt. Multiple pushing blocks are located outside the transmission belt, with a spacing between two adjacent pushing blocks for placing material. The size of the outlet is larger than the spacing. The pushing device includes a scraper and a rotating shaft. The scraper is fixed within the automatic feeding device via the rotating shaft and is oscillatingly connected to the rotating shaft via a torsion spring. The scraper surface has a curved structure. The automatic feeding device has an inclined surface located between the conveying device and the outlet.

[0012] A preferred technical solution: Each clamping device includes a first cylinder, a support plate, a movable shaft, a clamping plate, an inclined plate, a flexible block, and a second cylinder. The middle part of the support plate is connected to the output shaft of the first cylinder. The movable shaft is rotatably connected to both ends of the support plate. The inclined plates are respectively fixed on the two movable shafts, and a flexible block is provided on the inner side of each of the two inclined plates. The clamping plates are rotatably connected to the lower end of the movable shaft. The two ends of the second cylinder are respectively connected to the end of the support plate and the end of the clamping plate.

[0013] A preferred technical solution: An angled opening is formed between the two flexible blocks, and the flexible blocks are both made of rubber. When the two clamping plates are brought together, the distance between the two clamping plates is less than the distance between the two flexible blocks.

[0014] Compared with the prior art, this technical solution has the following advantages: In this invention, a steel bar falling between the first and second grinding wheels can be transported towards a trapezoidal plate by a frame and a first motor driving a transmission wheel to rotate. Finally, the steel bar rolls to the ground through a guide, thus avoiding dents, deformations, and scratches on the surface of the steel bar due to impact from excessive drop height. This achieves the function of automatic unloading. Furthermore, the automatic feeding function of the centerless grinder is achieved by the cooperation of the transmission device and the clamping device in the automatic feeding device. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is a schematic diagram of Example 1.

[0018] Figure 3 for Figure 2 A frontal view diagram.

[0019] Figure 4 This is a schematic diagram of the transmission wheel 211.

[0020] Figure 5 This is a schematic diagram of Example 2.

[0021] In the diagram: Automatic feeding device 1, conveying device 11, drive wheel 111, transmission belt 112, pushing device 12, scraper 121, rotating shaft 122, clamping device 13, first cylinder 131, support plate 132, movable shaft 133, clamping plate 134, inclined plate 135, flexible block 136, second cylinder 137, buffer discharge device 2, frame 21, conveying wheel 211, rubber buffer 2111, reinforcing rib 2112, deformation cavity 2113, first magnetic block 2114, second magnetic block 2115, first motor 212, base 22, third cylinder 221, trapezoidal plate 23, guide 24, inclined buffer block 241, rubber strip 242, first grinding wheel 3, second grinding wheel 4. Detailed Implementation

[0022] Example 1 like Figure 1-4As shown, this embodiment proposes an automatic discharge centerless grinder, including a buffer discharge device 2, a first grinding wheel 3, and a second grinding wheel 4. The buffer discharge device 2 is located between the first grinding wheel 3 and the second grinding wheel 4. From left to right, the buffer discharge device 2 is provided with a base 22, a trapezoidal plate 23, and a guide member 24. A frame 21 is provided on the upper end of the base 22. The base 22 is connected to the lower end of the frame 21 through multiple third cylinders 221. The frame 21 is located directly below the first grinding wheel 3 and the second grinding wheel 4. The upper end of the frame 21 has concave grooves extending to both the front and rear ends. In this invention, the steel bar is ground and cut by the rotation of the first grinding wheel 3 and the second grinding wheel 4. When the steel bar is ground to a certain outer diameter, it will fall downwards. The frame 21 catches the falling steel bar. The system includes a conveyor wheel 211 and a first motor 212. The first motor 212 is located on the side of the frame 21, while the conveyor wheel 211 is located in the middle of the concave groove of the frame 21. The output shaft of the first motor 212 passes through the frame 21 and is connected to the axis of the conveyor wheel 211. Therefore, when the steel bar falls after grinding, it will either directly impact the conveyor wheel 211 or directly abut against the upper surface of the conveyor wheel 211, or fall between the inner side of the concave groove of the frame 21 and the outer side of the conveyor wheel 211. When the first motor 212 drives the output shaft to rotate the conveyor wheel 211, it will convey the steel bar towards the trapezoidal plate 23, and finally move the steel bar to the guide member 24 and discharge it to the ground. This avoids the steel bar falling directly after grinding and then impacting the ground, causing deformation and dents as described in the background art, which would affect the product yield.

[0023] Furthermore, in this embodiment, the side of the conveyor wheel 211 has a progressively deeper stepped edge. Multiple rubber buffers 2111 are equidistantly arranged on the circumference of the stepped edge. Each rubber buffer 2111 has a conical structure and a deformation cavity 2113 for deformation. This arrangement aims to use the progressively deeper stepped edge to abut and catch steel bars of different outer diameters. The first motor 212 then drives the conveyor wheel 211 to rotate, thereby conveying the steel bars towards the trapezoidal plate 23. When the conveyor wheel 211 supports the steel bars, the rubber buffers 2111 located in the middle of the stepped edge can support the steel bars. The rubber buffers 2111 are made of rubber and can deform through the deformation cavity 2113 when compressed, thus fully supporting the steel bars and reducing the likelihood of the steel bars falling and impacting the conveyor wheel 211, causing the inner side of the conveyor wheel 211 to rub against the groove or deform.

[0024] Furthermore, the deformation cavity 2113 has a V-shaped structure, and the upper two sides of the deformation cavity 2113 are provided with first magnetic blocks 2114, while the lower two sides of the deformation cavity 2113 are provided with second magnetic blocks 2115. The first magnetic blocks 2114 and the second magnetic blocks 2115 are like-pairs and repel each other. When the steel rod falls onto the rubber buffer 2111, the like-pairs repulsion between the first magnetic blocks 2114 and the second magnetic blocks 2115 can be used to push the rubber buffer 2111 upward. When the conveyor wheel 211 rotates, the rubber buffer 2111 that is not in contact with the steel rod can also be restored to its original shape by the repulsion between the first magnetic blocks 2114 and the second magnetic blocks 2115.

[0025] Furthermore, a reinforcing rib 2112 is provided on the left and right sides of the deformation cavity 2113. The reinforcing rib 2112 is made of rubber, and each reinforcing rib 2112 has an angled notch on its inner side. The larger end of the angled notch is positioned towards the deformation cavity 2113 so that when the rubber buffer 2111 deforms, it can be supported and restored by the reinforcing rib 2112. When the reinforcing rib 2112 deforms due to compression, it can be bent at the angled notch.

[0026] Furthermore, both the trapezoidal plate 23 and the guide member 24 have a discharge groove at their upper ends. The discharge groove on the guide member 24 is connected to the discharge groove of the guide member 24, and the discharge groove of the guide member 24 extends to one side of the guide member 24. The discharge groove of the guide member 24 is set at an inclination. This configuration is such that when the output shaft of the first motor 212 drives the transmission wheel 211 to rotate, the steel bar is conveyed along the discharge groove. When it finally falls into the discharge groove on the guide member 24, it rolls downward to the ground through the inclination of the discharge groove. This enables automatic discharge of the steel bar, reduces the discharge height, and reduces or avoids scratches, dents, etc. on the surface of the steel bar caused by falling.

[0027] Furthermore, the discharge trough surface of the guide member 24 is provided with an inclined buffer block 241 and a rubber strip 242. The inclined buffer block 241 is aligned with the center line of the discharge trough of the trapezoidal plate 23. The rubber strip 242 is located on the side of the discharge trough of the guide member 24 away from the inclined buffer block 241, so as to increase the friction between the steel rod and the discharge trough surface of the guide member 24 through the rubber strip 242.

[0028] Therefore, based on the above, in this embodiment, the steel bar falling between the first grinding wheel 3 and the second grinding wheel 4 can be conveyed towards the trapezoidal plate 23 by the frame 21 and the transmission wheel 211 driven by the first motor 212. Finally, the steel bar rolls to the ground through the guide member 24, thereby avoiding the occurrence of dents, deformations and scratches on the surface of the steel bar due to impact caused by excessive falling height, thus realizing the function of automatic feeding.

[0029] Example 2, like Figure 5 As shown, this embodiment provides an automatic feeding machine, including an automatic feeding device 1 located on the side of a buffer feeding device 2. The automatic feeding device 1 is equipped with a conveying device 11, a pushing device 12, and a clamping device 13. The automatic feeding device 1 has an inlet and an outlet. The conveying device 11 and the pushing device 12 are both located within the automatic feeding device 1, while the clamping devices 13 are symmetrically arranged on both sides of the outlet of the automatic feeding device 1. The lower end of the clamping device 13 protrudes from the surface of the outlet. The conveying device 11 includes symmetrically arranged drive wheels 111 and a transmission belt 112. One of the drive wheels 111 is externally connected to a second motor for rotation. The two drive wheels 111 are connected by the transmission belt 112 for transmission. Multiple pushing blocks 1121 are provided outside the transmission belt 112, with a spacing between two adjacent pushing blocks 1121 for placing materials. Furthermore, the size of the discharge port is larger than the spacing; the pushing device 12 includes a scraper 121 and a rotating shaft 122. The scraper 121 is fixed inside the automatic feeding device 1 via the rotating shaft 122. The scraper 121 is oscillatingly connected to the rotating shaft 122 via a torsion spring, and the surface of the scraper 121 has a curved structure; the automatic feeding device 1 has an inclined surface located between the conveying device 11 and the discharge port. This arrangement allows the centerless grinder of the present invention to have an automatic feeding function. When in use, the user can feed the material into the pushing block 1121 inside the automatic feeding device 1 through the feed port. The output shaft of the second motor drives the drive wheel 111 to rotate, and the drive wheel 111 drives the transmission belt 112 to rotate, causing the pushing block 1121 to be conveyed upward, thus pushing the material placed on the pushing block 1121 upward until the material moves to the inclined surface inside the automatic feeding device 1, and so on. Figure 5 As shown, at the position where the steel bar does not abut against the inner side of the automatic feeding device 1, due to the curved surface of the push block 1121, when the steel bar moves to the upper part of the automatic feeding device 1, it will roll down onto the inclined surface inside the automatic feeding device 1 along the curved surface of the push block 1121, and finally be discharged through the discharge port of the automatic feeding device 1 and fall into the clamping device 13, where the clamping device 13 catches the steel bar. It should be explained here that the purpose of setting up the pusher device 12 is to accommodate parts with relatively rough surfaces. If a rough steel rod with high friction between itself and the push block 1121 continues to rise without falling off the push block 1121, the scraper 121 can be used to roll the steel rod off the push block 1121. Since the scraper 121 rotates around the pivot 122, and the pivot 122 is not perpendicular to the end of the push block 1121, the scraper 121 will not block the push block 1121 when it is squeezed and rotated, but will scrape the steel rod off. After scraping, the scraper 121 can return to its working point with the torsion spring.

[0030] Furthermore, each of the clamping devices 13 includes a first cylinder 131, a support plate 132, a movable shaft 133, a clamping plate 134, an inclined plate 135, a flexible block 136, and a second cylinder 137. The middle part of the support plate 132 is connected to the output shaft of the first cylinder 131. The movable shaft 133 is rotatably connected to both ends of the support plate 132, and the inclined plates 135 are respectively fixed to the two movable shafts 133. A flexible block 136 is provided on the inner side of each of the two inclined plates 135. The clamping plate 134 is rotatably connected to the lower end of the movable shaft 133. The two ends of the second cylinder 137 are respectively connected to the ends of the support plate 132 and the clamping plate 134. When the steel bar falls from the discharge port, it can be stopped by the two flexible blocks. When the flexible block 136 is squeezed and deformed, the steel rod will slide down and fall, eventually being caught by the clamping plate 134. Then, the first cylinder 131 can be controlled to extend the output shaft, pushing out the support plate 132 connected to the output shaft, so that the steel rod is close to the first grinding wheel 3 and the second grinding wheel 4. Then, the second cylinder 137 is controlled to push the clamping plate 134 outward, widening the gap between the two clamping plates 134, and discharging the steel rod onto the first grinding wheel 3 and the second grinding wheel 4. It should be explained that in this embodiment, the first cylinder 131 and the second cylinder 137 are both controlled by a PLC and a programming terminal. Such usage is common knowledge known to those skilled in the art, so it will not be described in detail.

[0031] Furthermore, an angled opening is formed between the two flexible blocks 136, and the flexible blocks 136 are all made of rubber. When the two clamping plates 134 are brought together, the distance between the two clamping plates 134 is less than the distance between the two flexible blocks 136.

[0032] The above description is merely a preferred embodiment of the present invention, and therefore should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of the patent and the contents of the specification should still fall within the scope of the present invention.

Claims

1. An automatic feed centerless grinding machine, characterized in that: The device includes a buffer discharge device (2), a first grinding wheel (3), and a second grinding wheel (4). The buffer discharge device (2) is located between the first grinding wheel (3) and the second grinding wheel (4). The buffer discharge device (2) is provided with a base (22), a trapezoidal plate (23), and a guide (24) from left to right. A frame (21) is provided at the upper end of the base (22). The base (22) is connected to the lower end of the frame (21) through multiple third cylinders (221). The frame (21) is located directly below the first grinding wheel (3) and the second grinding wheel (4). The upper end of the frame (21) has a concave groove extending to both the front and rear ends; The frame (21) is provided with a transmission wheel (211) and a first motor (212). The first motor (212) is located on the side of the frame (21), while the transmission wheel (211) is located in the middle of the concave groove of the frame (21). The output shaft of the first motor (212) passes through the frame (21) and is connected to the axis of the transmission wheel (211). The side of the conveyor wheel (211) has a stepped edge that deepens layer by layer. Multiple rubber buffers (2111) are provided at equal intervals on the periphery of the stepped edge. Each rubber buffer (2111) has a conical structure and a deformation cavity (2113) for deformation. The deformation cavity (2113) has a V-shaped structure, and a first magnetic block (2114) is provided on both sides of the upper end of the deformation cavity (2113), while a second magnetic block (2115) is provided on both sides of the lower end of the deformation cavity (2113). The first magnetic block (2114) and the second magnetic block (2115) are like-pairs and repel each other.

2. The automatic feeding centerless grinding machine according to claim 1, characterized in that: The deformation cavity (2113) is provided with a reinforcing rib (2112) on the left and right sides respectively. The reinforcing rib (2112) is made of rubber, and each reinforcing rib (2112) has an angled notch on its inner side. The larger end of the angled notch is set towards the deformation cavity (2113) so that when the rubber buffer (2111) deforms, it can be supported and restored by the reinforcing rib (2112).

3. The automatic feeding centerless grinding machine according to claim 1, characterized in that: The upper ends of the trapezoidal plate (23) and the guide (24) are both provided with a discharge groove. The discharge groove on the guide (24) is connected to the discharge groove of the guide (24), and the discharge groove of the guide (24) extends to one side of the guide (24). The discharge groove of the guide (24) is set in an inclined position.

4. The automatic feeding centerless grinding machine according to claim 3, characterized in that: The surface of the discharge trough of the guide (24) is provided with an inclined buffer block (241) and a rubber strip (242). The inclined buffer block (241) is aligned with the center line of the discharge trough of the trapezoidal plate (23). The rubber strip (242) is located on the side of the discharge trough of the guide (24) away from the inclined buffer block (241).

5. An automatic feed centerless grinding machine according to any one of claims 1-4, characterized in that: The automatic feeding device (1) is provided on the side of the buffer discharge device (2). The automatic feeding device (1) is provided with a conveying device (11), a pushing device (12), and a clamping device (13). The automatic feeding device (1) has an inlet and an outlet. The conveying device (11) and the pushing device (12) are both located inside the automatic feeding device (1), while the clamping device (13) is symmetrically located on both sides of the outlet of the automatic feeding device (1). The lower end of the clamping device (13) protrudes from the surface of the outlet. The conveying device (11) includes symmetrically arranged drive wheels (111) and transmission belts (112). One of the drive wheels (111) is externally connected to a second motor to drive its rotation. The two drive wheels (111) are connected to each other by transmission belts (112). The transmission belts (112) are provided with multiple push blocks (1121). There is a spacing between two adjacent push blocks (1121) for placing materials. The size of the discharge port is larger than the size of the spacing. The feeding device (12) includes a scraper (121) and a rotating shaft (122). The scraper (121) is fixed in the automatic feeding device (1) through the rotating shaft (122). The scraper (121) is oscillatingly connected to the rotating shaft (122) through a torsion spring, and the surface of the scraper (121) has a curved structure. The automatic feeding device (1) has an inclined surface located between the conveying device (11) and the discharge port.

6. The automatic feeding centerless grinding machine according to claim 5, characterized in that: Each of the clamping devices (13) includes a first cylinder (131), a support plate (132), a movable shaft (133), a clamping plate (134), an inclined plate (135), a flexible block (136), and a second cylinder (137). The middle part of the support plate (132) is connected to the output shaft of the first cylinder (131). The movable shaft (133) is rotatably connected to both ends of the support plate (132). The inclined plates (135) are respectively fixed on the two movable shafts (133). A flexible block (136) is provided on the inner side of each of the two inclined plates (135). The clamping plate (134) is rotatably connected to the lower end of the movable shaft (133). The two ends of the second cylinder (137) are respectively connected to the ends of the support plate (132) and the clamping plate (134).

7. The automatic feeding centerless grinding machine according to claim 5, characterized in that: An angled opening is formed between the two flexible blocks (136), and the flexible blocks (136) are all made of rubber. When the two clamping plates (134) are brought together, the distance between the two clamping plates (134) is less than the distance between the two flexible blocks (136).

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