Automatic feeding device for a through-type grinding machine

Abstract

The present invention relates to the technical field of feeding devices for grinding machines, and specifically to an automatic feeding device for a through-type grinding machine, comprising a grinding machine, a first feeding belt being arranged on the feeding side of the grinding machine, a second feeding belt being arranged on the discharging side of the grinding machine, and two groups of first side plates being symmetrically arranged on the top of the first feeding belt, the right ends of the two groups of first side plates being fixedly connected to the grinding machine respectively; a first roller is rotatably connected inside the first side plate, and the first roller passes through the front and rear side surfaces of the first side plate and is exposed outwardly, and a first feeding channel is formed between the front and rear two groups of adjacent first rollers. The present invention provides a first roller, a second roller and a differential assembly, and workers adjust the speed difference between the first roller and the second roller according to the type of the rod-shaped workpiece to be processed and the standard for grinding it, so as to meet the processing requirements for different types of workpieces and improve the applicability of the device and the processing efficiency of the workpieces.

Description

Technical Field

[0001] The invention relates to the technical field of feeding devices for grinding machines, and in particular to an automatic feeding device for a through-type grinding machine. Background Art

[0002] Due to its high efficiency and degree of automation, through-type grinders are widely used in batch processing of surface grinding of long rod-shaped workpieces. However, traditional through-type grinders have some limitations when continuously conveying workpieces, especially in the application scenario of precise grinding of the ends of workpieces. Currently, the feeding devices of most through-type grinders lack the ability to finely control the speed of the workpieces, resulting in unstable spacing between workpieces during the conveying process, making it difficult to ensure precise grinding of the ends of the workpieces, especially when processing multiple workpieces continuously.

[0003] The patent with application number CN202320163105.3 discloses a feeding device for a through-type magnetic core grinder, including a conveyor belt, support frames are fixedly installed at both ends of the conveyor belt, a first bracket is fixedly installed on the top of the support frame, slide grooves are provided at both ends of the top of the support frame, a slider is slidably connected inside the slide groove, a second bracket is fixedly installed on the top of the slider, one side of the first bracket is fixedly installed with the second bracket through a horizontal transmission mechanism, a pneumatic clamp is fixedly installed on the bottom of the second bracket, a vertical transmission mechanism is fixedly installed on the top of the pneumatic clamp, and a guide rail connected to the slide groove is fixedly installed at one end of the slide groove.

[0004] When the above patent is in operation, a conveyor belt is set up so that the workpiece is placed on the surface of the conveyor belt, and the workpiece is moved by the conveyor belt. This patent is difficult to apply to application scenarios with different workpieces and processing requirements. If the end of the workpiece is to be polished, multiple workpieces need to be manually spaced apart. If the entire workpiece is to be polished, in order to avoid the grinder being idling, multiple workpieces need to be manually arranged end to end, which makes it difficult to improve the efficiency of workpiece processing. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide an automatic feeding device for a through-type grinder to solve the problem that the existing feeding device for the grinder cannot be adjusted according to the type of workpiece and its processing requirements, resulting in low workpiece processing efficiency.

[0006] Based on the above purpose, the present invention provides an automatic feeding device for a through-type grinder, comprising a grinder, a first conveyor belt being arranged on the feed side of the grinder, a second conveyor belt being arranged on the discharge side of the grinder, and further comprising:

[0007] Two sets of first side plates are symmetrically arranged on the top of the first conveyor belt, and the right ends of the two sets of first side plates are respectively fixedly connected to the grinder;

[0008] The first side plate is internally rotatably connected with a first roller, and the first roller passes through the front and rear side surfaces of the first side plate and is exposed outward, and a first feeding channel is formed between the front and rear two adjacent groups of first rollers;

[0009] The first side plate is internally rotatably connected with a second roller, and the second roller passes through the front and rear side surfaces of the first side plate and is exposed outward, and a second feeding channel is formed between the front and rear two adjacent sets of second rollers;

[0010] A driving device for driving the second roller to rotate is arranged on the top of the first side plate, and a differential assembly is arranged between the first roller and the second roller. The differential assembly can transmit the first roller and the second roller and can adjust the speed difference between the first roller and the second roller.

[0011] Furthermore, the differential assembly includes a differential rod, the bottom of the differential rod is rotatably connected to a limit block, a slide groove for sliding the limit block is provided at the bottom of the inner cavity of the first side plate, and the top of the differential rod is provided with a first differential tooth, a second differential tooth, and a third differential tooth with decreasing gear ratios from top to bottom;

[0012] It also includes a first electric push rod, which is arranged on the top of the first side plate. The movable rod of the first electric push rod passes through the top of the first side plate downward, and the bottom of the first electric push rod is rotatably connected to a transmission cylinder. The inner periphery of the transmission cylinder is sleeved with a transmission rod. The transmission cylinder can drive the transmission rod to rotate synchronously and the transmission cylinder can slide up and down on the transmission rod. The bottom of the transmission rod is fixedly connected to the roller shaft of the first roller wheel. The bottom fixed sleeve of the outer periphery of the transmission cylinder is provided with a transmission tooth with the same gear ratio as the second differential gear. The transmission tooth can be respectively engaged with the first differential gear, the second differential gear, and the third differential gear;

[0013] A transmission assembly is arranged between the differential rod and the second roller, and the transmission assembly can transmit the differential rod and the second roller and control the differential rod to approach or move away from the first roller.

[0014] Further, the transmission assembly includes a second shaft, one end of which is rotatably connected to the rear side of the inner cavity of the first side plate, and the other end is fixedly connected to a third bevel gear, a fourth bevel gear meshing with the third bevel gear is fixedly sleeved on the roller shaft of the second roller, and a first pulley is fixedly sleeved on the second shaft;

[0015] The differential lever further comprises a first shaft, one end of which is rotatably connected to a slider, the slider is slidably connected to the rear side surface of the inner cavity of the first side plate, the other end of the first shaft is fixedly connected to a first bevel gear, and a second bevel gear meshing with the first bevel gear is fixedly sleeved on the shaft of the differential lever;

[0016] An L-shaped connecting rod, one end of which is rotatably connected to the roller shaft of the differential rod, and the other end of which is rotatably connected to the first shaft rod;

[0017] The top of the first side plate is fixedly connected with a second electric push rod, the movable rod of the second electric push rod passes downward through the top of the first side plate, the bottom of the second electric push rod is fixedly connected with a fixed block, and one side of the fixed block is rotatably connected with a tensioning wheel;

[0018] The first pulley, the second pulley and the tensioning pulley are sleeved with a same set of transmission belts for transmission;

[0019] A spring is arranged in the slide slot, one end of the spring is fixedly connected to one end of the slide slot, and the other end of the spring is fixedly connected to the limit block.

[0020] Furthermore, a fixing component is provided at the top of the inner cavity of the first side plate, and the fixing component includes a third electric push rod, and the third electric push rod is provided at the top of the first side plate. The movable rod of the third electric push rod passes downward through the top of the first side plate and its bottom is fixedly connected to the fixing plate, and a circular plate is rotatably connected to the top of the differential rod.

[0021] Furthermore, a limiting groove is provided on the inner circumference of the transmission cylinder, and a limiting strip which is slidably matched with the limiting groove is fixedly connected to the outer circumference of the transmission rod.

[0022] Furthermore, the first feed belt includes a first conveyor belt and a second conveyor belt, and the surface of the second conveyor belt is provided with a first protrusion group and a second protrusion group, the first protrusion group and the second protrusion group are arranged front and back, the two protrusion groups have at least two groups of protrusions, and the protrusions in the two protrusion groups are arranged alternately.

[0023] Furthermore, a feeding device for feeding materials onto the first conveyor belt is provided on one side of the first conveyor belt.

[0024] Furthermore, the feeding device comprises a box body with an upper opening, a partition is arranged in the box body, the front end of the partition is fixedly connected to the front side surface of the inner periphery of the box body, and the other end is spaced from the rear side surface of the inner periphery of the box body to form a feeding channel, and a baffle is slidably connected in the feeding channel;

[0025] The bottom of the inner cavity of the box is fixedly connected with a cylinder for driving the baffle to move up and down.

[0026] Furthermore, the driving device is a driving motor.

[0027] Furthermore, two groups of second side plates are symmetrically arranged on the second conveyor belt, one end of the two groups of second side plates are respectively fixedly connected to the grinder, and the inside of the two groups of second side plates are respectively rotatably connected to discharge rollers, forming a discharge channel between the front and rear groups of discharge rollers.

[0028] Furthermore, a reminder component is provided on a side away from each other between the first side plates, and the reminder component includes a sliding hole. A sliding hole is opened on a side away from each other between the first side plates, and a reminder rod is slidably provided in the sliding hole. One end of the reminder rod is rotatably connected to the tensioning wheel, and a reminder line is provided on a side away from each other between the first side plates.

[0029] Beneficial effects of the present invention: From the above description, it can be seen that the present invention provides an automatic feeding device for a through-type grinder. By setting the first roller, the second roller and the differential assembly, the worker can adjust the speed difference between the first roller and the second roller according to the type of the rod-shaped workpiece to be processed and the standard for grinding it, thereby meeting the processing requirements for different types of workpieces and improving the applicability of the device and the processing efficiency of the workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0032] Figure 2 For the embodiment of the present invention Figure 1 A is a schematic diagram of the enlarged structure of the middle part;

[0033] Figure 3 It is a schematic diagram of a top view of the structure of an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the cross-sectional structure of the first side panel according to an embodiment of the present invention;

[0035] Figure 5 is an enlarged schematic diagram of the fixing assembly according to an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the transmission cylinder structure of an embodiment of the present invention;

[0037] Figure 7 For the embodiment of the present invention Figure 6 Schematic diagram of the enlarged structure of B;

[0038] Figure 8 This is a schematic diagram of the first shaft structure according to an embodiment of the present invention;

[0039] Fig. 9 This is a schematic diagram of the second shaft structure of an embodiment of the present invention;

[0040] Fig.10 It is a schematic diagram of a side cross-sectional structure of the feeding device according to an embodiment of the present invention;

[0041] Fig.11 This is a schematic diagram of the side view structure of the tensioning wheel according to an embodiment of the present invention.

[0042] The markings in the figure are:

[0043] 1. Grinding machine; 2. First conveyor belt; 201. First conveyor belt; 202. Second conveyor belt; 3. Second conveyor belt; 4. First side plate; 5. First roller; 6. Second roller; 601. Driving motor; 7. Bump; 8. Feeding device; 801. Box; 802. Baffle; 803. Cylinder; 9. Differential rod; 901. First differential gear; 902. Second differential gear; 903. Third differential gear; 10. Second electric push rod; 1001. Tensioning wheel; 1002. Transmission belt; 11. First electric Push rod; 12. Transmission cylinder; 1201. Transmission rod; 13. Transmission teeth; 14. First shaft rod; 1401. First bevel gear; 1402. Second bevel gear; 1403. Connecting rod; 15. Second shaft rod; 1501. Third bevel gear; 1502. Fourth bevel gear; 16. Second side plate; 17. Prompt assembly; 1701. Sliding hole; 1702. Prompt rod; 1703. Prompt line; 18. Fixing assembly; 1801. Third electric push rod; 1802. Fixing plate; 1803. Round plate. DETAILED DESCRIPTION

[0044] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0045] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 As shown, an automatic feeding device for a through-type grinder includes a grinder 1, a first conveyor belt 2 is provided on the feed side of the grinder 1, a second conveyor belt 3 is provided on the discharge side of the grinder 1, and further includes:

[0047] Two sets of first side plates 4 are symmetrically arranged on the top of the first conveyor belt 2, and the right ends of the two sets of first side plates 4 are respectively fixedly connected to the grinder 1;

[0048] The first side plate 4 is internally rotatably connected with a first roller 5, and the first roller 5 passes through the front and rear sides of the first side plate 4 and is exposed outward, and a first feeding channel is formed between the front and rear two adjacent groups of first rollers 5;

[0049] The first side plate 4 is internally rotatably connected with a second roller 6, and the second roller 6 passes through the front and rear sides of the first side plate 4 and is exposed outward, and a second feeding channel is formed between the front and rear two adjacent groups of second rollers 6;

[0050] A driving device for driving the second roller 6 to rotate is provided on the top of the first side plate 4, and a differential assembly is provided between the first roller 5 and the second roller 6. The differential assembly can transmit power between the first roller 5 and the second roller 6 and can adjust the speed difference between the first roller 5 and the second roller 6.

[0051] In this embodiment, workers adjust the speed difference between the first roller 5 and the second roller 6 according to the type of the rod-shaped workpiece to be processed and the standard for grinding it, which can meet the processing requirements of different types of workpieces and improve the applicability of the device;

[0052] Specifically, when it is necessary to grind one end of the rod-shaped workpiece, the control driving device adjusts the rotation speed of the second roller 6 to be consistent with the conveying speed of the first conveyor belt 2, and then adjusts the rotation speed of the first roller 5 to be lower than the rotation speed of the second roller 6 by controlling the differential assembly; when in use, the worker can arbitrarily convey any number of rod-shaped workpieces to the first conveyor belt 2. Since the rotation speed of the first roller 5 is lower than that of the first conveyor belt 2, the speed of the workpiece will be reduced to be consistent with the rotation speed of the first roller 5 when passing through the first feeding channel composed of two groups of first rollers 5, and the subsequent workpieces will be overlapped end to end in sequence under the drive of the first conveyor belt 2 and the limit of the side plates; after the workpiece passes through the first feeding channel, its speed is consistent with the conveying speed of the first conveyor belt 2 under the action of the first conveyor belt 2. At this time, the next workpiece behind the workpiece passes through the first feeding channel, and the next workpiece There is a speed difference between the workpiece and the workpiece, so that the distance between the two is pulled apart. When the workpiece passes through the second feed channel, the two sets of second rollers 6 will keep the workpiece stable and convey the workpiece to the through-type grinder 1 to grind the end of one end of the workpiece. After the workpiece completely passes through the grinder 1, the next workpiece enters the grinder 1 for grinding, and the grinded workpiece is conveyed outward to the next process via the second conveyor belt 3. In addition, since the distance between the first roller 5 and the second roller 6 is constant, when continuously processing workpieces of the same size, the interval between the workpiece in the second feed channel and the workpiece in the first feed channel is constant. Therefore, the effect of continuous and equidistant feeding to the grinder 1 can be achieved. The operator can control the working interval of the grinder 1 to achieve the technical effect of continuously grinding one end of multiple groups of workpieces, without the need for manual material conveying, thereby improving work efficiency.

[0053] When the surfaces of multiple groups of rod-shaped workpieces need to be completely ground, the control driving device adjusts the rotation speed of the second roller 6 to be consistent with the conveying speed of the first conveyor belt 2, and then adjusts the rotation speed of the first roller 5 to be greater than the rotation speed of the second roller 6 by controlling the differential assembly; when in use, the speed of continuous workpieces passing through the first feed channel will be greater than the speed of the workpieces in the second feed channel. At this time, the distance between the two workpieces is reduced and under the push of the subsequent workpieces passing through the first feed channel, multiple groups of workpieces can be connected end to end in the first feed channel and the second feed channel, so that multiple groups of workpieces can enter the grinder 1 for grinding end to end, reducing the idle time of the grinder 1 and improving the grinding efficiency of the workpieces.

[0054] Preferably, the differential assembly includes a differential rod 9, the bottom of the differential rod 9 is rotatably connected to a limit block, a slide groove for sliding the limit block is provided at the bottom of the inner cavity of the first side plate 4, and the top of the differential rod 9 is provided with a first differential tooth 901, a second differential tooth 902, and a third differential tooth 903 with decreasing gear ratios from top to bottom;

[0055] It also includes a first electric push rod 11, which is arranged on the top of the first side plate 4. The movable rod of the first electric push rod 11 passes through the top of the first side plate 4 downward, and the bottom of the first electric push rod 11 is rotatably connected to a transmission cylinder 12. The inner periphery of the transmission cylinder 12 is sleeved with a transmission rod 1201. The transmission cylinder 12 can drive the transmission rod 1201 to rotate synchronously and the transmission cylinder 12 can slide up and down on the transmission rod 1201. The bottom of the transmission rod 1201 is fixedly connected to the roller shaft of the first roller 5. The bottom of the outer periphery of the transmission cylinder 12 is fixedly sleeved with a transmission tooth 13 with the same gear ratio as the second differential tooth 902. The transmission tooth 13 can mesh with the first differential tooth 901, the second differential tooth 902, and the third differential tooth 903 respectively.

[0056] A transmission assembly is provided between the differential rod 9 and the second roller 6, and the transmission assembly can transmit the differential rod 9 and the second roller 6 and control the differential rod 9 to approach or move away from the first roller 5;

[0057] The transmission assembly includes a second shaft 15, one end of which is rotatably connected to the rear side of the inner cavity of the first side plate 4, and the other end is fixedly connected to a third bevel gear 1501, a fourth bevel gear 1502 meshing with the third bevel gear 1501 is fixedly sleeved on the roller shaft of the second roller 6, and a first belt pulley is fixedly sleeved on the second shaft 15;

[0058] It also includes a first shaft rod 14, one end of which is rotatably connected to a slider, the slider is slidably connected to the rear side of the inner cavity of the first side plate 4, the other end of the first shaft rod 14 is fixedly connected to a first bevel gear 1401, and a second bevel gear 1402 meshing with the first bevel gear 1401 is fixedly sleeved on the shaft rod of the differential rod 9;

[0059] An L-shaped connecting rod 1403, one end of which is rotatably connected to the roller shaft of the differential rod 9, and the other end of which is rotatably connected to the first shaft rod 14;

[0060] The top of the first side plate 4 is fixedly connected with a second electric push rod 10, the movable rod of the second electric push rod 10 passes downward through the top of the first side plate 4, and the bottom thereof is fixedly connected with a fixed block, and one side of the fixed block is rotatably connected with a tensioning wheel 1001;

[0061] The first pulley, the second pulley and the tensioning wheel 1001 are sleeved with the same set of transmission belts 1002 for transmission;

[0062] A spring is arranged in the slide slot, one end of the spring is fixedly connected to one end of the slide slot, and the other end is fixedly connected to the limit block;

[0063] The second roller 6 drives the second shaft 15 to rotate through the fourth bevel gear 1502 and the third bevel gear 1501, the second shaft 15 drives the first shaft 14 to rotate through the transmission belt 1002, the first shaft 14 drives the differential rod 9 and the second roller 6 to rotate in the opposite direction through the first bevel gear 1401 and the second bevel gear 1402, the differential rod 9 drives the transmission cylinder 12 to rotate through the first differential gear 901, the second differential gear 902 or the third differential gear 903 and the transmission gear 13, and the transmission cylinder 12 drives the first roller 5 and the second roller 6 to rotate in the same direction through the transmission rod 1201;

[0064] When the speed of the first roller 5 is adjusted to be less than the speed of the second roller 6, the second electric push rod 10 is started to drive the tensioning wheel 1001 to move upward, and the tensioning wheel 1001 pulls the differential rod 9 and the limit block along the slide groove to the side away from the first roller 5 through the transmission belt 1002, and the spring is compressed to store energy, and then the first electric push rod 11 is controlled to drive the transmission cylinder 12 to move upward so that the transmission tooth 13 is parallel to the third differential tooth 903; next, the second electric push rod 10 is controlled to push the tensioning wheel 1001 to move downward, and the spring energy is released to push the differential rod 9 to approach the first roller 5 and make the third differential tooth 903 mesh with the transmission tooth 13. Since the gear ratio of the third differential tooth 903 is smaller than that of the transmission tooth 13, the speed of the first roller 5 is smaller than that of the differential rod 9 and thus smaller than that of the second roller 6, so that the first roller 5 and the second roller 6 rotate in the same direction and the speed of the first roller 5 is smaller than that of the second roller 6;

[0065] Similarly, when the rotation speed of the first roller 5 is adjusted to be greater than that of the second roller 6 , the first differential gear 901 is meshed with the transmission gear 13 , so that the first roller 5 and the second roller 6 rotate in the same direction and the rotation speed of the first roller 5 is greater than that of the second roller 6 .

[0066] Preferably, a limiting groove is provided on the inner circumference of the transmission cylinder 12, and a limiting strip which is slidably matched with the limiting groove is fixedly connected to the outer circumference of the transmission rod 1201;

[0067] The transmission cylinder 12 can drive the transmission rod 1201 to rotate synchronously through the sliding cooperation between the limiting groove and the limiting block, thereby driving the first roller 5 to rotate synchronously.

[0068] Preferably, the first conveyor belt 2 includes a first conveyor belt 201 and a second conveyor belt 202, the surface of the second conveyor belt 202 is provided with a first protrusion group and a second protrusion group, the first protrusion group and the second protrusion group are arranged front and back, the two protrusion groups have at least two groups of protrusions 7, and the protrusions 7 in the two protrusion groups are arranged alternately;

[0069] A limiting portion is formed between the first protrusion group and the second protrusion group, and the rod-shaped workpiece is located on the limiting portion. The protrusions 7 on both sides can limit the rod-shaped workpiece to prevent the rod-shaped workpiece from rolling and causing deviation during transportation.

[0070] Preferably, a feeding device 8 for feeding materials onto the first conveyor belt 2 is provided on one side of the first conveyor belt 2, the feeding device 8 comprises a box body 801 with an upper opening, a partition is provided in the box body 801, the front end of the partition is fixedly connected to the front side of the inner periphery of the box body 801, and the other end is spaced from the rear side of the inner periphery of the box body 801 to form a feeding channel, and a baffle 802 is slidably connected in the feeding channel;

[0071] The bottom of the inner cavity of the box body 801 is fixedly connected with a cylinder 803 for driving the baffle 802 to move up and down;

[0072] The worker places the workpiece on the partition in the box 801. The cylinder 803 drives the baffle 802 to move down to be flush with the baffle. The workpiece rolls along the baffle to the top of the baffle 802. After that, the cylinder 803 is started to lift the workpiece on the top of the baffle 802 upward to be higher than the box 801. The workpiece then rolls along the top of the baffle 802 to the first conveyor belt 2 for loading.

[0073] Preferably, the driving device is a driving motor 601 .

[0074] Preferably, two groups of second side plates 16 are symmetrically arranged on the second conveyor belt 3, one end of the two groups of second side plates 16 is fixedly connected to the grinder 1, and the insides of the two groups of second side plates 16 are rotatably connected to discharge rollers, and a discharge channel is formed between the front and rear groups of discharge rollers. A servo motor for driving the discharge roller to rotate is arranged on the top of the second side plate 16;

[0075] The workpiece ground by the grinder 1 is transferred to the second conveyor belt 3 through the discharge channel. At the same time, the two sets of discharge rollers can also assist the rods in the process of passing through the grinder 1 to ensure that the workpiece can be discharged smoothly from the discharge channel.

[0076] Preferably, a fixing assembly 18 is provided at the top of the inner cavity of the first side plate 4, and the fixing assembly 18 includes a third electric push rod 1801, which is provided at the top of the first side plate 4, and a movable rod of the third electric push rod 1801 passes downward through the top of the first side plate 4 and a fixing plate 1802 is fixedly connected to the bottom thereof, and a circular plate 1803 is rotatably connected to the top of the differential rod 9, and an anti-slip pad is provided on the top of the circular plate 1803;

[0077] When the differential rod 9 drives the first differential tooth 901, the second differential tooth 902 or the third differential tooth 903 to engage with the transmission tooth 13, the third electric push rod 1801 is started to push the first side plate 4 downward and tightly against the circular plate 1803, and the friction force between the anti-slip pad on the top of the circular plate 1803 and the circular plate 1803 is used to limit the differential rod 9 to avoid the vibration caused by the meshing transmission of the first differential tooth 901, the second differential tooth 902 or the third differential tooth 903 and the transmission tooth 13, thereby improving the stability of the transmission process.

[0078] Preferably, a prompt component 17 is provided on one side of the first side plates 4 away from each other, and the prompt component 17 includes a sliding hole 1701. The sliding hole 1701 is opened on one side of the first side plates 4 away from each other, and a prompt rod 1702 is slidably provided in the sliding hole 1701. One end of the prompt rod 1702 is rotatably connected to the tensioning wheel 1001, and a prompt line 1703 is provided on one side of the first side plates 4 away from each other.

[0079] Since the gear ratios of the first differential tooth 901, the second differential tooth 902 and the third differential tooth 903 decrease in sequence, when the three are respectively engaged with the transmission tooth 13, the distance between the differential rod 9 and the first roller 5 is gradually approached, thereby causing the height of the tensioning wheel 1001 to decrease in sequence, thereby driving the height of the prompt rod 1702 to decrease in sequence; therefore, the worker can judge the position of the prompt rod 1702 through the prompt line 1703 to intuitively judge the height of the tensioning wheel 1001, thereby judging the meshing state of the first differential tooth 901, the second differential tooth 902 and the third differential tooth 903 with the transmission tooth 13, thereby judging the speed difference between the first roller 5 and the second roller 6.

[0080] The automatic feeding device of the through-type grinder 1 provided by the present invention, by setting the first roller 5, the second roller 6 and the differential assembly, the worker adjusts the speed difference between the first roller 5 and the second roller 6 according to the type of the rod-shaped workpiece to be processed and the standard for grinding it, which can meet the processing requirements of different types of workpieces and improve the applicability of the device.

[0081] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0082] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic feeding device for a through-type grinding machine, comprising a grinding machine (1), a first conveyor belt (2) being arranged on the feeding side of the grinding machine (1), and a second conveyor belt (3) being arranged on the discharging side of the grinding machine (1), characterized in that: Also includes: Two groups of first side plates (4) are symmetrically arranged on the top of the first conveyor belt (2) front and back, and the right ends of the two groups of first side plates (4) are respectively fixedly connected to the grinding machine (1); the first side plate (4) is internally rotatably connected to a first roller (5), and the first roller (5) passes through the front and rear side surfaces of the first side plate (4) and is exposed outwardly, and a first feeding channel is formed between the front and rear adjacent groups of first rollers (5); the first side plate (4) is internally rotatably connected to a second roller (6), and the second roller (6) passes through the front and rear side surfaces of the first side plate (4) and is exposed outwardly, and a second feeding channel is formed between the front and rear adjacent groups of second rollers (6); a driving device for driving the second roller (6) to rotate is arranged on the top of the first side plate (4), and a differential assembly is arranged between the first roller (5) and the second roller (6), and the differential assembly can transmit between the first roller (5) and the second roller (6) and can adjust the speed difference between the first roller (5) and the second roller (6); The differential assembly comprises a differential rod (9), the bottom of the differential rod (9) is rotatably connected to a limit block, the bottom of the inner cavity of the first side plate (4) is provided with a slide groove for sliding the limit block, and the top of the differential rod (9) is provided with a first differential tooth (901), a second differential tooth (902), and a third differential tooth (903) with decreasing gear ratios from top to bottom; and also comprises a first electric push rod (11), which is arranged on the top of the first side plate (4), the movable rod of the first electric push rod (11) passes downward through the top of the first side plate (4), and the bottom of the first electric push rod is rotatably connected to a transmission cylinder (12), the inner circumference of the transmission cylinder (12) is provided with a transmission rod (1201), and the transmission cylinder (12) can drive the transmission rod (1201) and the transmission cylinder (12) can slide up and down on the transmission rod (1201), the bottom of the transmission rod (1201) is fixedly connected to the roller shaft of the first roller (5), and the bottom fixed sleeve of the outer periphery of the transmission cylinder (12) is provided with a transmission tooth (13) having the same gear ratio as the second differential tooth (902), and the transmission tooth (13) can respectively mesh with the first differential tooth (901), the second differential tooth (902), and the third differential tooth (903); a transmission assembly is arranged between the differential rod (9) and the second roller (6), and the transmission assembly can transmit the differential rod (9) and the second roller (6) and control the differential rod (9) to approach or move away from the first roller (5); The transmission assembly comprises a second shaft (15), one end of the second shaft (15) is rotatably connected to the rear side of the inner cavity of the first side plate (4), and the other end is fixedly connected to the third bevel gear (1501), the roller shaft of the second roller (6) is fixedly sleeved with a fourth bevel gear (1502) meshing with the third bevel gear (1501), and the second shaft (15) is fixedly sleeved with a first pulley; and also comprises a first shaft (14), one end of the first shaft (14) is rotatably connected to a slider, the slider is slidably connected to the rear side of the inner cavity of the first side plate (4), the other end of the first shaft (14) is fixedly connected to the first bevel gear (1401), the shaft of the first roller (5) is fixedly sleeved with a fourth bevel gear (1502) meshing with the third bevel gear (1501), and the first pulley is fixedly sleeved on the shaft of the first roller (5). The first side plate (4) is provided with a second bevel gear (1402) meshed with the second bevel gear (1401); an L-shaped connecting rod (1403), one end of which is rotatably connected to the roller shaft of the first roller wheel (5), and the other end of which is rotatably connected to the first shaft rod (14); the top of the first side plate (4) is fixedly connected with a second electric push rod (10), the movable rod of the second electric push rod (10) is downwardly passed through the top of the first side plate (4), and the bottom thereof is fixedly connected with a fixed block, and one side of the fixed block is rotatably connected with a tensioning wheel (1001); the first pulley, the second pulley and the tensioning wheel (1001) are sleeved with the same group of transmission belts (1002) for transmission; a spring is arranged in the slide groove, one end of the spring is fixedly connected to one end of the slide groove, and the other end is fixedly connected to the limit block; A fixing assembly (18) is arranged at the top of the inner cavity of the first side plate (4), and the fixing assembly (18) comprises a third electric push rod (1801), and the third electric push rod (1801) is arranged at the top of the first side plate (4), and the movable rod of the third electric push rod (1801) passes through the top of the first side plate (4) downward and is fixedly connected to a fixing plate (1802) at its bottom, and a circular plate (1803) is rotatably connected to the top of the differential rod (9); A limiting groove is provided on the inner circumference of the transmission cylinder (12), and a limiting strip which is slidably matched with the limiting groove is fixedly connected to the outer circumference of the transmission rod (1201).

2. The automatic feeding device for a through-type grinder according to claim 1, characterized in that: The first feed belt (2) comprises a first conveyor belt (201) and a second conveyor belt (202); a first protrusion group and a second protrusion group are arranged on the surface of the second conveyor belt (202); the first protrusion group and the second protrusion group are arranged front and back; the two protrusion groups have at least two groups of bumps (7), and the bumps (7) in the two protrusion groups are arranged alternately.

3. The automatic feeding device for a through-type grinder according to claim 1, characterized in that: A feeding device (8) for feeding materials onto the first conveyor belt (2) is arranged on one side of the first conveyor belt (2).

4. The automatic feeding device for a through-type grinder according to claim 3, characterized in that: The feeding device (8) comprises a box body (801) with an upper opening, a partition plate is arranged in the box body (801), the front end of the partition plate is fixedly connected to the front side surface of the inner periphery of the box body (801), and the other end is spaced from the rear side surface of the inner periphery of the box body (801) to form a feeding channel, and a baffle plate (802) is slidably connected in the feeding channel; and a cylinder (803) for driving the baffle plate (802) to move up and down is fixedly connected to the bottom of the inner cavity of the box body (801).

5. The automatic feeding device for a through-type grinder according to claim 1, characterized in that: Two groups of second side plates (16) are symmetrically arranged on the second conveyor belt (3), one end of the two groups of second side plates (16) is respectively fixedly connected to the grinding machine (1), and the inside of the two groups of second side plates (16) is rotatably connected to discharge rollers, so that a discharge channel is formed between the front and rear groups of discharge rollers.

6. The automatic feeding device for a through-type grinder according to claim 1, characterized in that: A prompt component (17) is provided on a side of the first side plates (4) that is away from each other, and the prompt component (17) comprises a sliding hole (1701). A sliding hole (1701) is provided on a side of the first side plates (4) that is away from each other, and a prompt rod (1702) is slidably provided in the sliding hole (1701), one end of the prompt rod (1702) is rotatably connected to the tensioning wheel (1001), and a prompt line (1703) is provided on a side of the first side plates (4) that is away from each other.

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