Edge trimmer

Abstract

The invention relates to an edge trimmer which comprises a rack serving as a mounting base. The feeding device is arranged on the rack and used for conveying workpieces; the workbench is arranged on the rack and used for fixing a workpiece and then driving the workpiece to rotate; the cutter rest is used for mounting a cutter; the tool apron is arranged on the machine frame and used for installing the tool rest and meanwhile used for feeding so as to be matched with the workbench for cutting and retracting after machining is completed; the tool rest is rotationally installed on the tool apron and can be used for adjusting the tool nose angle of the cutter, and the tool apron is provided with a fixing piece used for fixing the tool rest. After the cutter is installed on the cutter rest again after being polished, the cutter point angle of the cutter is adjusted to a proper angle by rotating the cutter rest, the cutter rest is fixed through the fixing piece, and then debugging of the cutter can be completed. And the adjusting mode that the cutter is fixed through the fixing structure of the cutter is adopted, so that the cutter is more convenient to adjust, and the problem that the cutter deflects when the traditional cutter is adjusted and fixed is not easy to occur.

Description

Technical Field

[0001] The present application relates to the technical field of injection-molded workpiece trimming equipment, and particularly to a trimming machine. Background Art

[0002] Workpieces formed by injection molding usually have excess waste edges and excess waste materials designed to fit the injection runner. The waste edges and excess waste materials of the workpieces need to be removed before the workpieces can be packed.

[0003] Common removal methods are to remove the waste edges and waste materials of the workpieces through a trimming machine. For non-cylindrical workpieces with regular shapes, they are usually cut through a cutting die. For those with irregular shapes, they are usually removed by grinding.

[0004] For cylindrical workpieces, the workpieces are usually fixed on a rotating table and rotated, and then the waste edges and waste materials of the workpieces are cut off by a cutting tool.

[0005] To avoid interference with the workpiece, the cutting tool is usually designed in a rod shape. And to ensure that the transition between the cut surface of the waste edge or waste material and the surface of the workpiece is flat without steps, the cutting tip of the cutting tool for cutting is designed as multiple surfaces.

[0006] During long-term use, the cutting tool will become blunt due to wear and needs to be removed and ground before it can be used again. Since the cutting tip of the cutting tool has multiple surfaces, when reinstalling after grinding, the cutting tool needs to be rotated and adjusted to the correct angle before it can cut normally. Therefore, during the adjustment process, the cutting tool needs to be loosened and fixed multiple times, and multiple trial cuts are also required to readjust the cutting tool to the appropriate angle. The overall adjustment process is rather troublesome. Summary of the Invention

[0007] To solve the problem that it is rather troublesome to reinstall the cutting tool of a traditional trimming machine after removing it for grinding, the present application provides a trimming machine.

[0008] The trimming machine provided by the present application adopts the following technical solutions: A trimming machine, comprising a frame, serving as an installation base; a feeding device, arranged on the frame and used for transporting workpieces; a workbench, arranged on the frame and used for fixing the workpiece and driving the workpiece to rotate; a tool holder, used for installing a cutting tool; a tool post, arranged on the frame, used for installing the tool holder and also for feeding to cooperate with the workbench for cutting and retracting the tool after processing is completed; the tool holder is rotatably installed on the tool post, and rotating the tool holder can be used to adjust the tip angle of the cutting tool, and the tool post is provided with a fixing member for fixing the tool holder.

[0009] Through the above technical solution, after the cutter is polished and reinstalled on the knife holder, the knife tip angle is adjusted to a suitable angle by rotating the knife holder, and the cutter can be debugged by fixing the knife holder with a fixing part. Compared with the traditional adjustment method that requires multiple loosening of the cutter fixing structure, then rotating and adjusting the cutter, and then fixing the cutter with the cutter fixing structure, the cutter adjustment is more convenient and is less likely to cause the cutter to deflect when the traditional cutter is adjusted and fixed.

[0010] Optionally, the fixing member includes an adjusting motor disposed on the tool holder, the adjusting motor is transmission-connected to the tool holder, and the adjusting motor is a self-locking motor.

[0011] Optionally, the frame is provided with a detection device, and the detection device is used to detect the cutting surface of the workpiece after processing is completed but before discharge.

[0012] Optionally, the feeding device comprises: A feeding conveyor belt, arranged on the frame, for inputting the processed products; A discharging conveyor belt, arranged on the frame, for discharging the processed products; A translation frame, horizontally slidably mounted on the frame; A lifting frame, which is lifted and lowered on the translation frame; A material picker, which is arranged on the lifting frame and is used to pick up and place workpieces; By sliding the translation frame and lifting the lifting frame, the material picking piece can be transported to a position where it can pick up materials from the loading conveyor belt and the workbench. By sliding the translation frame and lifting the lifting frame, the material picking piece can also be transported to a position where the workpiece taken from the conveyor belt can be placed on the workbench, and the workpiece taken from the workbench can be placed on the unloading conveyor belt.

[0013] Optionally, the material picking part includes a plurality of first vacuum suction cups arranged on the lifting frame, and the frame at the discharge end of the loading conveyor belt is provided with a limit plate, and the limit plate is provided with a limit opening on the side facing the feed end of the loading conveyor belt. When the workpiece made of flexible material is transported to a specified position by the conveyor belt, the side wall of the workpiece fits with the side wall of the limit opening, and at this time the waste edge of the workpiece is located at the lower side of the limit plate, and the limit plate is provided with a proximity sensor for detecting the workpiece, and the limit plate can slide away from the loading conveyor belt.

[0014] Optionally, a mounting plate is slidably installed on the frame along the direction close to or away from the feeding end of the discharging conveyor belt. A second vacuum chuck is rotatably installed on the mounting plate. When the mounting plate slides to a position close to the feeding end of the discharging conveyor belt, the second vacuum chuck is located above the feeding end of the discharging conveyor belt. At this time, when the workpiece taking member places the workpiece on the discharging conveyor belt, the second vacuum chuck is used to receive the workpiece, turn it over, and then place it on the discharging conveyor belt.

[0015] Optionally, a temporary storage table for placing workpieces is provided on the frame between the workbench and the feeding conveyor belt. When the translation frame, lifting frame, and workpiece taking member cooperate to transport workpieces, the workpieces are synchronously transported from the feeding conveyor belt to the temporary storage table, from the temporary storage table to the workbench, and from the workbench to the discharging conveyor belt.

[0016] Optionally, the workbench includes a rotating table rotatably installed on the frame, a connecting shaft rotatably installed on the frame, and a rotary joint. One end of the connecting shaft is coaxially connected to the rotating table. The connecting shaft is tubular. A ring-shaped negative pressure groove is coaxially provided on the tabletop of the rotating table for placing workpieces. Negative pressure holes are coaxially provided on the tabletop of the rotating table. A plurality of air channels are provided inside the rotating table. Both the negative pressure groove and the negative pressure holes are connected and communicated with the inner hole of the connecting shaft through the air channels. The rotary joint is coaxially provided at one end of the connecting shaft away from the rotating table. The rotary joint is used to connect an air extraction pump.

[0017] Optionally, the tool holder includes a first bracket provided on the frame. A second bracket is installed on the first bracket in a lifting and sliding manner. A third bracket is installed on the second bracket in a horizontal sliding manner. A fourth bracket is rotatably installed on the third bracket. The rotation axis of the fourth bracket is horizontal. One end of the fourth bracket can be rotated to face the workbench. A fifth bracket is slidably installed on the fourth bracket. The fifth bracket can slide to one end of the fourth bracket close to the workbench. The tool rest is rotatably installed on the fifth bracket.

[0018] Optionally, a push plate is provided on the frame in a lifting manner. The push plate is provided with an avoidance hole. The rotating table slides through the avoidance hole. The frame is provided with a jetting mechanism for cleaning the waste on the push plate.

[0019] In summary, after the cutting tool is ground and reinstalled on the tool holder, by rotating the tool holder to adjust the tip angle of the cutting tool to an appropriate angle, and then fixing the tool holder with a fixing member, the debugging of the cutting tool can be completed. Compared with the traditional method that requires loosening the fixing structure of the cutting tool multiple times, then rotating and adjusting the cutting tool, and finally fixing the cutting tool through the fixing structure of the cutting tool, the adjustment of the cutting tool is more convenient, and it is not easy to have the problem that the cutting tool deflects when it is fixed after the traditional cutting tool adjustment is completed. At the same time, when removing the waste edge of a cylindrical workpiece made of flexible material, the workpiece is restricted by the limiting plate. Only when the waste edge is of normal thickness can the first vacuum chuck take out the workpiece from the feeding conveyor belt under the restriction of the limiting plate. When the waste edge of the workpiece is too thick, resulting in too much resistance and the first vacuum chuck cannot successfully take out the workpiece, the central processing unit detects an abnormal change in the internal pressure of the first vacuum chuck, stops transporting the workpiece, resets the translation frame and the lifting frame, then commands the limiting plate to move away from the feeding conveyor belt, starts the feeding conveyor belt to push the abnormal workpiece off the feeding conveyor belt, then resets the limiting plate and transports the workpiece normally again. Due to the detection of the limiting plate, most abnormal workpieces will be detected before cutting, reducing false alarms caused by the abnormality of the workpiece itself during subsequent workpiece detection. And because of the setting of the temporary storage table, the moving stroke of the translation frame is reduced, the overall volume of the equipment is reduced, and the conveying speed of the workpiece is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structural schematic diagram of the present application.

[0021] Figure 2 is a three-dimensional structural schematic diagram of the present application in another direction.

[0022] Figure 3 is Figure 1 an enlarged schematic diagram of part A in

[0023] Figure 4 is a three-dimensional structural schematic diagram of the feeding conveyor belt, the workbench, the temporary storage table and the discharging conveyor belt of the present application.

[0024] Figure 5 is a three-dimensional structural schematic diagram of the workbench of the present application.

[0025] Figure 6 is a cross-sectional view of the workbench of the present application, with a workpiece to be processed placed on the workbench in the figure.

[0026] Figure 7 is a three-dimensional structural schematic diagram at the translation frame of the present application.

[0027] Figure 8 is a three-dimensional structural schematic diagram of the tool holder and the tool rest of the present application.

[0028] Figure 9It is a schematic three-dimensional structure diagram of the dial of the present application.

[0029] Figure 10 It is a schematic three-dimensional structure diagram of the tool rest using the first connecting seat of the present application.

[0030] Figure 11 It is a schematic three-dimensional structure diagram of the connecting block of the present application.

[0031] Figure 12 It is a schematic three-dimensional structure diagram of the cutting tool of the present application.

[0032] Figure 13 It is a cross-sectional view of the first connecting seat of the present application.

[0033] Figure 14 It is a schematic three-dimensional structure diagram of the tool rest using the second connecting seat of the present application, with a cover installed in the figure.

[0034] Figure 15 It is a cross-sectional view of the second connecting seat of the present application.

[0035] Those skilled in the art will understand that the elements in the drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the sizes and positions of some elements in the drawings may be enlarged relative to other elements to help improve the understanding of the embodiments of the present invention.

[0036] Reference numerals: 1, frame; 11, limit plate; 111, limit opening; 12, mounting plate; 121, second vacuum chuck; 122, flipping motor; 13, temporary storage table; 14, push plate; 141, avoidance hole; 2, feeding device; 21, loading conveyor belt; 22, discharging conveyor belt; 23, translation frame; 24, lifting frame; 241, lifting cylinder; 25, picking member; 251, first vacuum chuck; 26, guide sleeve; 3, workbench; 31, rotating table; 311, negative pressure groove; 312, negative pressure hole; 313, air passage; 32, connecting shaft; 33, rotary joint; 4, tool holder; 41, first bracket; 42, second bracket; 43, third bracket; 431, dial; 4311, arc-shaped sliding groove; 4312, slider; 4313, stop bar; 44, fourth bracket; 441, pointer; 442, feed motor; 45, fifth bracket; 46, fixing member; 461, adjusting motor; 5, tool rest; 51, first connecting seat; 52, connecting block; 53, spring collet; 54, receiving groove; 55, limiting surface; 6, detection device; 61, camera; 62, fill light; 7, air jet mechanism; 71, air jet plate; 72, jet hole; 8, second connecting seat; 81, mounting hole; 82, driving rod; 821, first connecting hole; 83, adjusting block; 831, second connecting hole; 84, driving gear; 85, cover; 86, mounting groove; 87, rack; 871, scale; 88, limiting block; 9, central processing unit; 10, cutting tool. Detailed implementation mode

[0037] The following will further elaborate on this application in conjunction with the attached Figures 1 - 15 drawings.

[0038] An embodiment of this application discloses a trimming machine. Referring to Figure 1 and Figure 2 , it includes a frame 1 and a feeding device 2, a tool holder 4, a workbench 3, a temporary storage table 13, a detection device 6 and a central processor disposed on the frame 1.

[0039] The feeding device 2 is used to carry workpieces, the tool holder 4 is used to install cutting tools, the workbench 3 is used to fix workpieces and drive the workpieces to rotate, the tool holder 4 is also used to feed and cut the edges of the workpieces on the workbench 3 and retract the tool after cutting, the detection device 6 is used to detect the flatness between the cutting surface of the processed workpiece and the side wall of the workpiece itself, and the central processor is used to control the whole machine.

[0040] Referring to Figure 1 and Figure 2 , the feeding device 2 includes a loading conveyor belt 21 and an unloading conveyor belt 22 rotatably installed on the frame 1. The loading conveyor belt 21 is used to transport workpieces to be processed, and the unloading conveyor belt 22 is used to output the processed workpieces.

[0041] Referring to Figure 3 , Figure 4 and Figure 7 , the feeding device 2 further includes a translation frame 23, a lifting frame 24 and a number of material taking members 25.

[0042] The translation frame 23 is horizontally slidably installed on the frame 1 in a direction perpendicular to the conveying direction of the loading conveyor belt 21 and is driven to slide by a cylinder. The translation frame 23 can slide close to or away from the loading conveyor belt 21.

[0043] The lifting frame 24 is vertically slidably installed on the translation frame 23 and is driven to slide by a cylinder. The material taking members 25 are disposed on the lifting frame 24.

[0044] The material taking members 25 include three first vacuum suction cups 251. The three first vacuum suction cups 251 are evenly spaced along the sliding direction of the translation frame 23 on the lifting frame 24. The first vacuum suction cup 251 close to the loading conveyor belt 21 is defined as the first one.

[0045] Referring to Figure 4 , Figure 5 and Figure 6 , the workbench 3 includes a circular rotating table 31 rotatably installed on the frame 1, a connecting shaft 32 rotatably installed on the frame 1 and a rotary joint 33.

[0046] The rotation axis of the rotating table 31 is vertical, the axis of the connecting shaft 32 is vertical, the upper end of the connecting shaft 32 is fixedly connected to the rotating table 31 coaxially, the connecting shaft 32 is tubular, and the rotary joint 33 is fixedly installed coaxially at the lower end of the connecting shaft 32, and the rotary joint 33 communicates with the inner hole of the connecting shaft 32.

[0047] The rotating table 31 is used to place workpieces. The frame 1 is provided with a motor for driving the connecting shaft 32, and then driving the rotating table 31 and the workpieces thereon to rotate.

[0048] Refer to Figure 6 , a circular negative pressure groove 311 is coaxially formed in the top wall of the rotating table 31, several air channels 313 are arranged inside the rotating table 31, the negative pressure groove 311 is connected and communicated with the inner hole of the connecting shaft 32 through the air channels 313. A negative pressure hole 312 is also coaxially formed in the top wall of the rotating table 31, and the negative pressure hole 312 is also connected to the inner hole of the connecting shaft 32 through the air channels 313.

[0049] The rotary joint 33 is connected to an air extraction pump. When the workpiece is placed on the rotating table 31, the central processor starts the air extraction pump to evacuate the negative pressure groove 311 and the negative pressure hole 312. When processing a cylindrical workpiece, the workpiece is adsorbed on the rotating table 31 by the negative pressure groove 311 and the negative pressure hole 312. When processing an annular workpiece, since it is necessary to cut and remove the outer edge waste and the closed surface formed during injection molding of the inner ring of the annular workpiece, the workpiece body is adsorbed on the rotating table 31 by the negative pressure groove 311, and the closed surface formed during injection molding of the inner ring of the workpiece is adsorbed on the rotating table 31 by the negative pressure hole 312, so that the closed surface of the inner ring of the annular workpiece is not easily splashed after being cut off from the workpiece. At the same time, when the closed surface of the inner ring of the workpiece is cut off, the cut-off closed surface is blown off the rotating table 31 by reverse blowing through the negative pressure hole 312.

[0050] Refer to Figure 3 , Figure 4 and Figure 7 , the temporary storage table 13 is fixedly installed on the frame 1 between the workbench 3 and the feeding conveyor belt 21, and the temporary storage table 13 is used to place the workpieces to be processed.

[0051] Refer to Figure 3 , Figure 4 and Figure 7 , when the translation frame 23 approaches the feeding conveyor belt 21, the first first vacuum suction cup 251 is directly above the workpiece at the discharging end of the feeding conveyor belt 21, the second first vacuum suction cup 251 is directly above the temporary storage table 13, and the third first vacuum suction cup 251 is directly above the workbench 3. Compared with directly transporting the workpiece on the feeding conveyor belt 21 to the workbench 3, through the temporary storage table 13 for transfer, the sliding stroke required for the translation frame 23 is reduced, thereby reducing the volume of the whole machine, and at the same time improving the handling speed of the workpiece.

[0052] Refer toFigure 3 , Figure 4 and Figure 7 , the placement surface of the workbench 3, the placement surface of the temporary storage table 13, and the transportation surface of the loading conveyor belt 21 are located on the same horizontal plane. At this time, the lifting frame 24 is lowered to the lowest position. The first first vacuum suction cup 251 can be used to adsorb the workpieces on the loading conveyor belt 21, the second first vacuum suction cup 251 can be used to adsorb the workpieces on the temporary storage table 13, and the third first vacuum suction cup 251 can be used to adsorb the workpieces on the workbench 3.

[0053] The horizontal distance between the first first vacuum suction cup 251 and the second first vacuum suction cup 251 is the same as the horizontal distance between the second first vacuum suction cup 251 and the third first vacuum suction cup 251. After all three first vacuum suction cups 251 have sucked the workpieces, the air cylinder drives the lifting frame 24 to rise to lift the workpieces away from their original positions. Then, the translation frame 23 moves away from the loading conveyor belt 21 under the drive of the air cylinder. At this time, the first first vacuum suction cup 251 is located directly above the temporary storage table 13, the second first vacuum suction cup 251 is located directly above the workbench 3, and the third first vacuum suction cup 251 is located directly above the feeding end of the discharging conveyor belt 22. Then, the lifting frame 24 is lowered to the lowest end under the drive of the air cylinder, and then the first vacuum suction cup 251 stops working to place the three workpieces on the temporary storage table 13, the workbench 3, and the feeding end of the discharging conveyor belt 22 respectively, completing the transfer of the workpieces.

[0054] All three first vacuum suction cups 251 are vertically slidably mounted on the lifting frame 24 through guide sleeves 26. When adsorbing workpieces of different thicknesses, the first vacuum suction cup 251 can be slid to a suitable position for adaptation and fixed with set screws.

[0055] Referring to Figure 1 , Figure 3 and Figure 8 , the trimming machine disclosed in this embodiment is mainly used for processing annular workpieces. Therefore, two tool holders 4 are provided and symmetrically arranged on the racks 1 on both sides of the workbench 3. The cutting tool of one tool holder 4 is used to cut off the waste edges on the outer sidewall of the workpiece, and the cutting tool of the other tool holder 4 is used to cut off the waste edges on the inner sidewall of the workpiece. When used for processing cylindrical workpieces, one of the tool holders 4 can be removed.

[0056] Referring to Figure 8 , the tool holder 4 includes a first bracket 41 fixedly installed on the rack 1, a second bracket 42 vertically slidably installed on the first bracket 41, a third bracket 43 horizontally slidably installed on the second bracket 42, and a fourth bracket 44 rotatably installed on the third bracket 43.

[0057] Referring to Figure 8 and Figure 9, a scale 431 is fixedly installed on the third bracket 43. The scale 431 is coaxial with the rotation axis of the fourth bracket 44. The fourth bracket 44 is strip-shaped. A pointer 441 is fixedly installed on the side wall of the fourth bracket 44. The tip of the pointer 441 is located at the scale 871 of the scale 431. Through the cooperation between the pointer 441 and the scale 431, the rotation angle of the fourth bracket 44 can be conveniently observed.

[0058] Refer to Figure 8 and Figure 9 , an arc-shaped chute 4311 is coaxially opened on the scale 431. A slider 4312 is slidably installed in the chute. A stop bar 4313 is provided at the notch of the chute. A fixing bolt is slidably installed on the fourth bracket 44. One end of the fixing bolt is threadedly connected to the slider 4312. When the fourth bracket 44 rotates to a specified angle, the fixing bolt is tightened. The fixing bolt presses against the fourth bracket 44, and the slider 4312 presses against the stop bar 4313. The fourth bracket 44 is fixed through the cooperation between the fixing bolt and the slider 4312.

[0059] Refer to Figure 1 and Figure 8 , both the second bracket 42 and the third bracket 43 are driven by the way of a screw slider 4312. One end of the fourth bracket 44 can rotate to the workbench 3. A fifth bracket 45 is slidably installed on the fourth bracket 44 along its length direction. A feed motor is fixedly installed at the end of the fourth bracket 44 away from the workbench 3. The feed motor drives the fifth bracket 45 to slide by the way of a screw slider 4312. A tool holder 5 is provided on the fifth bracket 45. A cutting tool is installed through the tool holder 5. The feed and retraction of the cutting tool are realized through the fifth bracket 45.

[0060] Refer to Figure 8 , with the rotation connection point of the fourth bracket 44 as the center, the torque of the two parts on both sides of the center of the fourth bracket 44 to the center of the fourth bracket 44 is divided to be between 1 and 1.1, which is convenient for the rotation adjustment of the fourth bracket 44 and also makes the fourth bracket 44 not easy to loosen after being fixed by the fixing bolt.

[0061] Refer to Figure 1 and Figure 8 , and at the same time when processing workpieces of different models, it is adapted by adjusting the height of the second bracket 42, the horizontal position of the third bracket 43 and the rotation angle of the fourth bracket 44. At the same time, by adjusting the extension length of the cutting tool instead of adjusting the feed distance of the fifth bracket 45, the adjustment is more convenient.

[0062] Refer to Figure 3 , Figure 8 and Figure 10 , the tool holder 5 includes a first connecting seat 51 rotatably installed on the fifth bracket 45, a connecting block 52 fixedly installed on the first connecting seat 51 through bolts, and a spring collet 53 integrally provided at one end of the connecting block 52.

[0063] Refer to Figure 10 、 Figure 11 and Figure 12 The first connecting seat 51 and the connecting block 52 are mutually assembled to form a cylindrical shape. The rotation axis of the first connecting seat 51 is parallel to the length direction of the fourth support 44. The spring collet 53 is coaxial with the first connecting seat 51. The cutting tool is fixed by the spring collet 53. When disassembling the cutting tool, the cutting tool can be pulled out after loosening the collet of the spring collet 53.

[0064] Refer to Figure 10 、 Figure 11 and Figure 13 On the mutually assembled surfaces of the first connecting seat 51 and the connecting block 52, accommodation grooves 54 are coaxially provided. The two accommodation grooves 54 are mutually assembled. The cutting tool is inserted into the spring collet 53, and the tool shank of the cutting tool is located in the accommodation groove 54.

[0065] Refer to Figure 8 The fifth support 45 is provided with a fixing member 46 for fixing the first connecting seat 51. The fixing member 46 includes an adjusting motor 461 fixedly installed on the fifth support 45. The output shaft of the adjusting motor 461 is fixedly connected coaxially with the first connecting seat 51. The adjusting motor 461 is selected as a self-locking motor. The first connecting seat 51 is driven to rotate and fixed by the adjusting motor 461.

[0066] Refer to Figure 10 、 Figure 11 and Figure 12 On one side of the inner wall of the mounting hole 81 of the spring collet 53, the surface is planar, and this surface is defined as the limiting surface 55. The side wall of the cutting tool is also provided with a limiting surface 55. When the cutting tool is installed on the spring collet 53, the limiting surface 55 of the cutting tool fits with the limiting surface 55 of the mounting hole 81, so that the cutting tool is circumferentially fixed with the spring collet 53.

[0067] Refer to Figure 2 The detection device 6 is provided on the frame 1 at the discharge end of the discharge conveyor belt 22. The detection device 6 includes two cameras 61 and two fill lights 62. The two cameras 61 are respectively fixedly installed on the frame 1 on both sides of the discharge end of the discharge conveyor belt 22. The two fill lights 62 are also respectively fixedly installed on the frame 1 on both sides of the discharge end of the discharge conveyor belt 22. The outer side wall and the inner side wall of the workpiece are respectively filled with light by the two fill lights 62, and then the outer side wall and the inner side wall of the workpiece are respectively photographed by the two cameras 61. The photos obtained after the cameras 61 photograph are sent to the central processor for processing. The central processor calculates the contour of the pattern in the picture through a vision algorithm. When the contour line in the pattern meets the standard, the detection passes, and the discharge conveyor belt 22 continues to output the workpiece. When the contour line in the pattern is abnormal, the central processor stops the machine and then alarms.

[0068] The whole machine is detected through an alarm prompt. If the prompt indicates that the contour line at the cutting surface is abnormal, check the cutting tool, the tool rest 5 and the tool holder 4. If the cutting tool is found to be dull, loosen the collet of the spring collet 53, remove the cutting tool for grinding. After the cutting tool is ground, reinstall it into the spring collet 53. At the same time, adjust the protruding length of the cutting tool to an appropriate length, then tighten the collet and fix the cutting tool in the spring collet 53.

[0069] Refer to Figure 1 、 Figure 2 and Figure 3 When the cutting tool is ground and then reinserted onto the spring collet 53, first manually start the adjustment motor 461 to rotate the cutting tool so that the tip of the cutting tool rotates to a roughly appropriate position. Then, start the whole machine for trial cutting through the central processing unit. The detection device 6 detects the workpiece after trial cutting, and then rotates the first connecting seat 51 through the adjustment motor 461 corresponding to the convex or concave of the contour of the cutting surface. After rotating the first connecting seat 51 and the cutting tool to an appropriate angle, the debugging is completed.

[0070] The first connecting seat 51 is suitable for the situation where the cutting tool has less wear and lower tool change frequency during daily use. For the situation where the cutting tool has large wear and needs frequent grinding and tool change during daily use, the second connecting seat 8 is provided in this embodiment for adaptation.

[0071] Refer to Figure 14 and Figure 15 The difference between the second connecting seat 8 and the first connecting seat 51 is only that the second connecting seat 8 is coaxially provided with an installation hole 81, the installation hole 81 is connected to the receiving groove 54, a driving rod 82 is coaxially and rotatably installed in the installation hole 81, a first connecting hole 821 is coaxially provided on the end face of the driving rod 82 facing the receiving groove 54, an adjusting block 83 is threadedly installed in the first connecting hole 821, a second connecting hole 831 is coaxially provided on the side of the adjusting block 83 facing the receiving groove 54, and a limiting surface 55 is also provided on the side wall of the second connecting hole 831. One end of the tool shank of the cutting tool is slidably installed in the second connecting hole 831 and abuts against the bottom of the second connecting hole 831.

[0072] Refer to Figure 14 and Figure 15 On the side wall of the driving rod 82, a driving gear 84 is coaxially and integrally provided. A gear groove 85 is coaxially provided in the installation hole 81, and the driving gear 84 is located in the gear groove 85. An installation groove 86 is provided on the side wall of the connecting seat, the installation groove 86 is connected to the gear groove 85, and one side of the driving gear 84 is located in the installation groove 86.

[0073] Refer to Figure 14 and Figure 15, the cross-section of the installation groove 86 is an inverted trapezoid. Both ends of the installation groove 86 penetrate through the side wall of the connecting seat. A rack 87 is slidably installed in the installation groove 86. The rack 87 meshes with the driving gear 84. A limiting block 88 is fitted in the installation groove 86 in a matching manner. The limiting block 88 is fixedly connected to the connecting seat by bolts. The side of the rack 87 facing away from the driving gear 84 is attached to the side of the limiting block 88 facing the gear. The limiting block 88 is used to maintain the sliding of the rack 87 in the installation groove 86 and maintain the meshing of the rack 87 with the driving gear 84.

[0074] Refer to Figure 14 and Figure 15 , when installing the cutting tool, first insert the cutting tool into the spring collet 53 and make the end of the cutting tool abut against the bottom of the second connecting hole 831. Tighten the collet of the spring collet 53 until the frictional force between the cutting tool and the spring collet 53 can prevent the cutting tool from slipping out of the spring collet 53 under the action of gravity.

[0075] Refer to Figure 14 and Figure 15 , then sleeved the workpiece to be processed on the workbench 3. Push the driving gear 84 to rotate through the rack 87, and then drive the driving rod 82 to rotate. Since the cutting tool restricts the rotation of the adjusting block 83, when the driving rod 82 rotates, it pushes the adjusting block 83 to slide, and then pushes the cutting tool to slide until the tip of the cutting tool abuts against the workpiece. Then take out the workpiece. A scale 871 corresponding to the sliding distance of the adjusting block 83 is provided on the side wall of the rack 87. After taking out the workpiece, continue to push the rack 87 to slide to drive the driving gear 84 to rotate and push the adjusting block 83 and the cutting tool to slide a specified cutting distance and then stop. This cutting distance refers to the extension distance that the cutting tool continues to extend after abutting against the workpiece until it can cut off the waste edge of the workpiece without damaging the workpiece.

[0076] Through the cooperation between the driving mechanism and the adjusting block 83, the extension length of the cutting tool can be adjusted more conveniently and accurately. At the same time, the adjusting block 83 provides an axial supporting force for the cutting tool, so that the axial position of the cutting tool is not likely to change during use.

[0077] Refer to Figure 14 and Figure 15 , after the extension distance of the cutting tool is adjusted, remove the limiting block 88, and then take out the rack 87 to complete the adjustment. A cover is also provided on the side wall of the connecting seat. The cover is fitted in the slot opening of the installation groove 86 in a matching manner to close the installation groove 86. When the rack 87 is taken out, install the cover on the side wall of the connecting seat to close the installation groove 86, so that the driving rod 82 and the driving gear 84 are not easy to rust and are not easy to be disturbed by the outside world to rotate, resulting in deviation of the position of the cutting tool.

[0078] When the cutting surface of the workpiece is located on the side wall of the workpiece, the camera 61 can obtain a photo for comparison and detection by taking pictures from the upper side of the workpiece. However, when the cutting surface of the workpiece is located at the bottom wall of the workpiece, the photo taken from the upper side of the workpiece cannot reflect the complete cutting surface of the workpiece.

[0079] The frame 1 is horizontally slidably installed with a mounting plate 12 along the direction close to or away from the feeding end of the discharging conveyor belt 22. The mounting plate 12 is fixedly installed with a turning motor. The axis of the output shaft of the turning motor is horizontal, and the output shaft of the turning motor is coaxially fixedly installed with a second vacuum chuck 121.

[0080] Refer to Figure 1 、 Figure 3 and Figure 7 As shown in

[0081] Refer to Figure 1 、 Figure 3 and Figure 7 The lifting frame 24 is fixedly installed with a lifting cylinder 241. One end of the lifting cylinder 241 is fixedly connected to the third first vacuum chuck 251. The third first vacuum chuck 251 is driven to slide and fixed by the lifting cylinder 241. When the piston rod of the lifting cylinder 241 retracts, the third vacuum chuck can be used to adsorb the workpiece on the second vacuum chuck 121. When the piston rod of the lifting cylinder 241 extends, the third first vacuum chuck 251 can be used to adsorb the workpiece on the workbench 3.

[0082] Refer to Figure 1 、 Figure 3 and Figure 7 As shown in

[0083] After the first vacuum chuck 251 stops, the second vacuum chuck 121 starts to fix the processed workpiece on the second vacuum chuck 121. Then the turning motor starts to turn the second vacuum chuck 121 so that the workpiece faces the discharging conveyor belt 22. The second vacuum chuck 121 stops, and the workpiece is turned over and falls onto the discharging conveyor belt 22 and then is conveyed to the detection device 6 for detection.

[0084] Refer to Figure 3 and Figure 4, a limiting plate 11 is horizontally slidably mounted on the frame 1 along the conveying direction of the loading conveyor belt 21. The limiting plate 11 slides along the direction of approaching or departing from the loading conveyor belt 21, and the limiting plate 11 is driven by a cylinder.

[0085] Referring to Figure 3 and Figure 4 , when the piston rod of the cylinder extends, the limiting plate 11 slides to directly above the discharge end of the loading conveyor belt 21. The limiting plate 11 is provided with a limiting groove in the shape of an isosceles triangle facing the feeding end of the loading conveyor belt 21.

[0086] Referring to Figure 3 and Figure 4 , when processing workpieces made of flexible materials, such as rubber or silicone parts, the limiting plate 11 moves to the discharge end of the loading conveyor belt 21 under the drive of the cylinder. When the loading conveyor belt 21 transports the workpiece to the designated position, the side wall of the workpiece fits against the side wall of the limiting groove, and the waste edge of the workpiece is located below the limiting plate 11.

[0087] Referring to Figure 3 and Figure 4 , when sucking the workpiece by the first vacuum chuck 251, the first vacuum chuck 251 needs to pull the waste edge of the workpiece out from below the limiting plate 11 to successfully remove the workpiece from the loading conveyor belt 21. If the workpiece has defects, resulting in an overly thick waste edge or insufficient sealing between the workpiece and the first vacuum chuck 251, the first vacuum chuck 251 will be unable to remove the workpiece from the loading conveyor belt 21. When the central processing unit detects that the change in the air pressure in the first vacuum chuck 251 is always abnormal, it can be determined that the workpiece is a defective product. At this time, the cylinder drives the limiting plate 11 to slide away from the loading conveyor belt 21, and the loading conveyor belt 21 continues to start to push the defective workpiece off the loading conveyor belt 21, and then the limiting plate 11 resets.

[0088] Referring to Figure 3 and Figure 4 , through the cooperation between the limiting plate 11 and the first vacuum chuck 251, the workpiece can be preliminarily detected more conveniently, and the overall detection process is relatively simple.

[0089] A proximity sensor is fixedly installed on the limiting plate 11. The position of the workpiece is detected by the proximity sensor and counted at the same time. When the proximity sensor detects that the workpiece reaches the designated position, the central processing unit stops the loading conveyor belt 21, so that it is not easy for the distance between two workpieces to gradually shorten due to mechanical errors during the process of the loading conveyor belt 21 transporting the workpiece, resulting in the workpieces being stacked on each other. At the same time, the loading monitoring is realized through the proximity sensor, which is convenient for maintenance when a fault occurs later.

[0090] Referring to Figure 3 and Figure 4The frame 1 is equipped with a push plate 14 by means of a cylinder lift. The push plate 14 is horizontal. A avoidance hole 141 is provided in the middle of the push plate 14. The upper end of the rotating table 31 coaxially slides through the avoidance hole 141. The frame 1 on one side of the rotating table 31 is also provided with an injection mechanism 7. The injection mechanism 7 includes an injection plate 71. The injection plate 71 is provided with a plurality of injection holes 72. The injection holes 72 spray toward the rotating table 31. A flow channel is provided inside the injection plate 71. The injection plate 71 is connected to the air compressor through an air valve.

[0091] When the waste edge of the workpiece and the inner cover are cut, the push plate 14 rises to push the waste edge from the rotating table 31, and the vacuum pump reversely inflates to blow the cut closed surface out of the rotating table 31, and then the injection hole 72 sprays air to blow the waste off.

[0092] The implementation principle of a trimming machine in the embodiment of the present application is as follows: After the workpiece to be processed is transported to the limit plate 11 by the loading conveyor 21, the loading conveyor 21 stops, and then the translation frame 23 slides to the discharge end of the loading conveyor 21, and the lifting frame 24 descends to suck the workpiece through the first vacuum suction cup 251, and the translation frame 23 is reset, and the lifting frame 24 descends to place the workpiece on the temporary storage table 13.

[0093] After repeating the above process, the workpiece is placed on the workbench 3, the third vacuum suction cup is started to adsorb the workpiece on the workbench 3, the workbench 3 is rotated by the motor, the feed motor is started to push the cutter to the specified position to cut off the waste edge of the workpiece and then retract the cutter, and then the translation frame 23, the lifting frame 24 and the first vacuum suction cup 251 repeat the above process to place the workpiece on the discharge conveyor belt 22 for discharge, and the discharge conveyor belt 22 transports the workpiece to the camera 61 for shooting and inspection.

[0094] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A trimming machine, characterized in that, include A frame (1) serving as a mounting base; A feeding device (2), arranged on the frame (1), and used for transporting workpieces; A workbench (3) is arranged on the frame (1) and is used to fix the workpiece and then drive the workpiece to rotate; A knife holder (5) for mounting a cutting knife; A tool holder (4) is arranged on the frame (1) and is used to install the tool holder (5) and is also used to feed the tool to cooperate with the workbench (3) for cutting and to withdraw the tool after the processing is completed; The knife holder (5) is rotatably mounted on the knife base (4); rotation of the knife holder (5) can be used to adjust the angle of the knife tip of the cutter; the knife base (4) is provided with a fixing member (46) for fixing the knife holder (5).

2. The trimming machine according to claim 1, characterized in that, The fixing member (46) comprises an adjusting motor (461) arranged on the knife seat (4); the adjusting motor (461) is transmission-connected to the knife holder (5); and the adjusting motor (461) is a self-locking motor.

3. A trimming machine according to claim 1, characterized in that: The frame (1) is provided with a detection device (6), and the detection device (6) is used to detect the cutting surface of the workpiece after machining is completed but before discharge.

4. A trimming machine according to claim 1, characterized in that, The feeding device (2) comprises: A loading conveyor belt (21), arranged on the frame (1) and used for inputting processed products; A discharging conveyor belt (22), arranged on the frame (1) and used for discharging the processed products; A translation frame (23) mounted on the frame (1) for horizontal sliding movement; A lifting frame (24), which is lifted and lowered on the translation frame (23); A material taking piece (25), arranged on the lifting frame (24), and used for taking and placing workpieces; By sliding the translation frame (23) and lifting the lifting frame (24), the material picking piece (25) can be transported to a position where the material picking piece (25) can pick up materials from the loading conveyor belt (21) and the workbench (3). By sliding the translation frame (23) and lifting the lifting frame (24), the material picking piece (25) can also be transported to a position where a workpiece taken from the conveyor belt can be placed on the workbench (3), and a workpiece taken from the workbench (3) can be placed on the unloading conveyor belt (22).

5. The trimming machine according to claim 4, characterized in that: The material picking member (25) comprises a plurality of first vacuum suction cups (251) arranged on the lifting frame (24); a frame (1) at the discharge end of the loading conveyor belt (21) is provided with a limit plate (11); a side of the limit plate (11) facing the feed end of the loading conveyor belt (21) is provided with a limit opening (111); when a workpiece made of a flexible material is transported to a specified position by the conveyor belt, a side wall of the workpiece fits with a side wall of the limit opening (111), and at this time, a waste edge of the workpiece is located at the lower side of the limit plate (11); the limit plate (11) is provided with a proximity sensor for detecting the workpiece, and the limit plate (11) can slide away from the loading conveyor belt (21).

6. A trimming machine according to claim 4, characterized in that: The frame (1) is slidably mounted with a mounting plate (12) in a direction close to or away from the feeding end of the discharging conveyor belt (22). The mounting plate (12) is rotatably mounted with a second vacuum suction cup (121). When the mounting plate (12) slides to be close to the feeding end of the discharging conveyor belt (22), the second vacuum suction cup (121) is located above the feeding end of the discharging conveyor belt (22). At this time, when the workpiece taking member (25) places the workpiece on the discharging conveyor belt (22), the second vacuum suction cup (121) is used to receive the workpiece, turn the workpiece over and then place it on the discharging conveyor belt (22).

7. A trimming machine according to claim 4, wherein: A temporary storage table (13) for placing workpieces is provided on the frame (1) between the workbench (3) and the feeding conveyor belt (21). When the translation frame (23), the lifting frame (24) and the workpiece taking member (25) cooperate to transport the workpiece, the workpiece is synchronously transported from the feeding conveyor belt (21) to the temporary storage table (13), from the temporary storage table (13) to the workbench (3), and from the workbench (3) to the discharging conveyor belt (22).

8. The trimming machine according to claim 1, characterized in that: The workbench (3) includes a rotating table (31) rotatably mounted on the frame (1), a connecting shaft (32) rotatably mounted on the frame (1), and a rotary joint (33). One end of the connecting shaft (32) is coaxially connected to the rotating table (31). The connecting shaft (32) is tubular. A ring-shaped negative pressure groove (311) is coaxially provided on the tabletop of the rotating table (31) for placing workpieces. Negative pressure holes (312) are coaxially provided on the tabletop of the rotating table (31). A plurality of air channels (313) are provided inside the rotating table (31). The negative pressure groove (311) and the negative pressure holes (312) are both connected and communicated with the inner hole of the connecting shaft (32) through the air channels (313). The rotary joint (33) is coaxially provided at one end of the connecting shaft (32) away from the rotating table (31). The rotary joint (33) is used to connect an air extraction pump.

9. A trimming machine according to claim 1, wherein: The tool holder (4) includes a first bracket (41) provided on the frame (1). The first bracket (41) is vertically and slidably mounted with a second bracket (42). The second bracket (42) is horizontally slidably mounted with a third bracket (43). The third bracket (43) is rotatably mounted with a fourth bracket (44). The rotation axis of the fourth bracket (44) is horizontal. One end of the fourth bracket (44) can be rotated to face the workbench (3). The fourth bracket (44) is slidably mounted with a fifth bracket (45). The fifth bracket (45) can slide to one end of the fourth bracket (44) close to the workbench (3). The tool rest (5) is rotatably mounted on the fifth bracket (45).

10. A trimming machine according to claim 8, characterized in that: The frame (1) is provided with a push plate (14) that can be lifted. The push plate (14) is provided with an avoidance hole (141). The rotating table (31) slides through the avoidance hole (141). The frame (1) is provided with a jetting mechanism (7). The jetting mechanism (7) is used to remove waste on the push plate (14).

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