Automatic loading and unloading device for thread rolling machine

Abstract

The present invention relates to an automatic loading and unloading device for a thread rolling machine, comprising a single-piece discharge mechanism for discharging a raw material rod individually, a material transporting arm for conveying the single-piece discharge from the single-piece discharge mechanism to a raw material size detection mechanism, a raw material size detection mechanism for detecting the length of the raw material rod and the depth of the tapered hole at the end, a product size detection and air blowing mechanism for detecting the length of the rolled thread product, and a loading and unloading arm. Compared with the prior art, the present invention can realize automatic loading and unloading of the thread rolling machine, detect the length of the raw material and product and the depth of the tapered hole using a contact displacement sensor, and sort them using a six-axis robot based on the detection results, significantly reducing time costs, improving production efficiency, reducing labor costs, reducing the difficulty of operation, and enhancing safety.

Description

Technical Field

[0001] The invention belongs to the technical field of thread rolling processing and relates to an automatic loading and unloading device for a thread rolling machine. Background Art

[0002] The widespread development of shaft products in the current automotive industry has made the application of blanking machines increasingly mature and popular. The thread rolling machine is a multifunctional cold extrusion forming machine tool. It performs thread, straight, and diagonal rolling on workpieces in a cold state within its rolling force range; rolling straight, helical, and helical spline gears; straightening, diameter reduction, rolling, and various forming rolling processes. It is one of the main processing devices for shaft products in the automotive industry. In the actual production process, due to the substandard size of the raw material rod or the wear of the raw material rod during thread rolling, the resulting thread rolling size is difficult to meet the downstream automobile assembly requirements. The usual practice is to manually check one by one, but this will lead to a significant decrease in production efficiency and a significant increase in labor costs, which will in turn lead to a serious reduction in the company's production capacity. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic loading and unloading device for a thread rolling machine.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] An automatic loading and unloading device for a thread rolling machine is used to cooperate with the thread rolling machine to process a raw material rod into a thread-rolled product. The raw material rod includes a support end, a splined outer protrusion, a thin polished rod neck, and a thread-rolled outer protrusion connected in sequence along the axial direction. The end surface of the support end is provided with a front tapered hole, and the end surface of the thread-rolled outer protrusion is provided with a rear tapered hole.

[0006] The automatic loading and unloading device of the thread rolling machine includes

[0007] The single-piece discharge mechanism is used to realize single-piece discharge of raw material rods, including a loading hopper for storing multiple raw material rods, a feed conveyor belt inclined in the loading hopper, a servo drive motor connected to the feed conveyor belt, a discharge baffle plate lifted and arranged above the lower end of the feed conveyor belt, and a single-material positioning groove provided outside the lower end of the feed conveyor belt and adapted to the raw material rods; the feed conveyor belt is provided with multiple supporting teeth arranged in parallel, the supporting teeth extending along the width direction of the feed conveyor belt, and the raw material rods are placed flat on two adjacent supporting teeth;

[0008] The material transporting robot arm is used to transport the single piece of material discharged from the single piece discharging mechanism to the raw material size detection mechanism;

[0009] Raw material size detection mechanism, used to detect the length of the raw material rod and the depth of the end taper hole;

[0010] Product size detection and air blowing mechanism, used to detect the length of thread rolling products;

[0011] The loading and unloading robotic arm is used to transport the raw material rods that have passed the length and end taper hole depth inspection to the thread rolling machine, transport the thread rolling products to the product size inspection and blowing mechanism, and transport the thread rolling products that have passed the length inspection to the receiving mechanism.

[0012] Furthermore, the single-piece discharge mechanism further includes a single-material feeding assembly provided between the single-material positioning groove and the lower end of the feed conveyor belt, the single-material feeding assembly including a feeding platform, a feeding slope provided at the top of the feeding platform and having its lower edge connected to the single-material positioning groove, a blanking chute provided between the feeding platform and the lower end of the feed conveyor belt, and a lifting platform provided in the blanking chute for lifting;

[0013] The width of the blanking trough is adapted to the radial width of the raw material rod; the top of the lifting platform is provided with a limiting slope adapted to the feeding slope, so that during the rising process of the lifting platform, the raw material rod is limited between the limiting slope and the side wall of the feeding platform, and when the lifting platform rises to the top, the lower edge of the limiting slope is connected to the upper edge of the feeding slope.

[0014] Furthermore, the single material positioning groove is provided with openings at both ends along the axial direction of the raw material rod;

[0015] The device also includes a raw material rod placement direction screening mechanism, which includes a laser sensor, a material pushing cylinder provided at an opening at one end of the single material positioning groove, and a reverse material collecting groove provided at an opening at the other end of the single material positioning groove;

[0016] The laser sensor points to a position in the single material positioning groove corresponding to the neck of the thin polished rod on the raw material rod being discharged in the forward direction.

[0017] Furthermore, the device also includes a tapered hole blowing mechanism provided between the single piece discharge mechanism and the raw material size detection mechanism;

[0018] The tapered hole blowing mechanism comprises a blowing box, a raw material rod yielding hole provided on the top of the blowing box, and a blowing nozzle arranged in the blowing box.

[0019] Furthermore, the raw material size detection mechanism includes a raw material detection positioning groove with a rear end opening, a raw material detection limit plate provided at the front end of the raw material detection positioning groove, a raw material length detection push tube provided at the rear end opening and sliding along the axial direction of the raw material rod, a rear tapered hole detection probe provided in the raw material length detection push tube and extending from the front end, a detection clearance hole provided on the raw material detection limit plate, and a front tapered hole detection probe capable of moving along the axial direction of the raw material rod and passing through the detection clearance hole;

[0020] The raw material length detection push tube, the front tapered hole detection probe rod and the rear tapered hole detection probe rod are respectively connected to corresponding displacement sensors.

[0021] Furthermore, the material transport robot arm includes a truss robot, a vertical telescopic cylinder arranged on the movable end of the truss robot, a gripper cylinder arranged on the movable end of the vertical telescopic cylinder, and a gripper transmission-connected to the gripper cylinder.

[0022] Furthermore, the loading and unloading robot arm is a six-axis robot with double grippers at the end.

[0023] Furthermore, the product size detection and blowing mechanism includes a product detection groove with an opening at the top, a product detection positioning groove arranged in the product detection groove and open at one end, a product detection limit plate arranged at the other end of the product detection positioning groove, a product length detection push rod arranged at the end opening and sliding along the axial direction of the thread rolling product, a displacement sensor connected to the product length detection push rod, and an oil blowing nozzle and an oil mist collector arranged in the product detection groove.

[0024] Furthermore, the device includes two product size detection and blowing mechanisms arranged in parallel, as well as a cover displacement guide rail arranged on one side of the two product detection slots, a displacement seat movable on the cover displacement guide rail, and an oil blowing bin cover plate arranged on the displacement seat and adapted to the top opening of the product detection slot.

[0025] Furthermore, the material receiving mechanism includes a finished product conveyor belt and a defective product conveyor belt arranged in parallel.

[0026] Compared with the prior art, the present invention has the following characteristics:

[0027] 1) The present invention uses a toothed conveyor belt as the raw material rod discharge conveyor, allowing the raw material rods to be placed flat on two adjacent supporting teeth. A servo drive motor is used to achieve step-by-step feeding. A lifting discharge baffle is also used to control the discharge of only one raw material rod at a time, facilitating subsequent single-material inspection and processing. Furthermore, the belt conveyor mechanism can effectively prevent product accumulation and jamming.

[0028] 2) The present invention provides a tapered hole air blowing mechanism 14 between the single-piece discharge mechanism 4 and the raw material size detection mechanism 6 to prevent residual iron filings from affecting the detection distance during tapered hole processing and to prevent possible iron filings on the raw material from affecting the thread rolling quality, thereby ensuring detection accuracy and thread rolling processing quality.

[0029] 3) The present invention can realize automatic loading and unloading of the thread rolling machine, and detect the length of the raw materials and products and the depth of the tapered hole through a contact displacement sensor, and sort them through a six-axis robot according to the detection results, which significantly reduces time costs, improves production efficiency, reduces labor costs, reduces the difficulty of getting started, and enhances safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1It is a structural schematic diagram of a raw material rod;

[0031] Figure 2 It is a structural schematic diagram of a thread rolling product;

[0032] Figure 3 This is a structural diagram of an automatic loading and unloading device for a thread rolling machine in an embodiment;

[0033] Figure 4 、 Figure 5 It is a structural diagram of a single-piece discharge mechanism;

[0034] Figure 6 It is a structural diagram of a single material feeding component;

[0035] Figure 7 This is a structural diagram of the material transport robotic arm;

[0036] Figure 8 It is a structural diagram of the raw material size detection mechanism;

[0037] Figure 9 for Figure 8 A partial enlarged schematic diagram of point A in the middle;

[0038] Figure 10 It is a structural diagram of the loading and unloading robot arm;

[0039] Figure 11 This is a schematic diagram of the product size detection and blowing mechanism;

[0040] Figure 12 for Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0041] Description of the marks in the figure:

[0042] 1-Raw material:

[0043] 101-support end, 102-spline convex portion, 103-thin polished rod neck, 104-thread rolling convex portion;

[0044] 2-thread rolling product; 3-workbench;

[0045] 4-Single piece discharge mechanism:

[0046] 401-loading hopper, 402-feeding conveyor belt, 403-servo drive motor, 404-baffle lifting cylinder, 405-wedge-shaped discharge baffle, 406-single material positioning slot, 407-supporting teeth, 408-feeding platform, 409-feeding chute, 410-lifting platform, 411-laser sensor, 412-pushing cylinder, 413-return material collection trough, 414-post-blowing nozzle;

[0047] 5-Material transport robot arm:

[0048] 501-truss manipulator, 502-vertical telescopic cylinder, 503-grip cylinder, 504-grip;

[0049] 6-Raw material size detection mechanism:

[0050] 601-Raw material detection positioning groove, 602-Raw material detection limit plate, 603-Raw material detection front mounting plate, 604-Raw material detection rear mounting plate, 605-Raw material length detection cylinder, 606-Raw material rear detection plate, 607-Raw material length detection push tube, 608-Rear cone hole detection probe rod, 609-Front cone hole detection cylinder, 610-Raw material front detection plate, 611-Front cone hole detection probe rod;

[0051] 7-Product size detection and blowing mechanism:

[0052] 701-product detection slot, 702-product detection positioning slot, 703-product detection limit plate, 704-product detection mounting plate, 705-product detection cylinder, 706-product detection plate, 707-product length detection push rod, 708-oil blowing nozzle, 709-oil blowing bin cover;

[0053] 8-loading and unloading robotic arm, 9-finished product conveyor belt, 10-defective product conveyor belt, 11-moving track, 12-moving rack, 13-oil receiving tray, 14-cone hole blowing mechanism. DETAILED DESCRIPTION

[0054] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0055] Example:

[0056] An automatic loading and unloading device for a thread rolling machine is used to cooperate with the thread rolling machine to process a raw material rod 1 into a thread rolling product 2. The structure of the raw material rod 1 is as follows Figure 1 As shown, it includes a support end 101, a splined outer protrusion 102, a thin polished rod neck 103, and a thread rolling outer protrusion 104 connected in sequence along the axial direction. The end surface of the support end 101 is provided with a front tapered hole, and the end surface of the thread rolling outer protrusion 104 is provided with a rear tapered hole. The structure of the thread rolling product 2 is as follows Figure 2 shown.

[0057] This device is used to detect the length of the raw material rod 1 and the depth of the front and rear end tapered holes, recycle unqualified products, send qualified products to the thread rolling machine for thread rolling processing, and detect the length of the resulting thread rolling product 2. Through automated operation, it improves work efficiency and reduces labor costs.

[0058] like Figure 3 As shown, the automatic loading and unloading device of the thread rolling machine includes a workbench 3, a single-piece discharge mechanism 4 arranged on the workbench 3, a material transporting robotic arm 5, a raw material size detection mechanism 6, a product size detection and blowing mechanism 7, and a loading and unloading robotic arm 8 and a material receiving mechanism.

[0059] like Figure 4 、 Figure 5 As shown, the single-piece discharge mechanism 4 includes a loading bin 401 for storing multiple raw material rods 1, a feed conveyor belt 402 inclined in the loading bin 401, a servo drive motor 403 connected to the feed conveyor belt 402, a baffle lifting cylinder 404 provided above the lower end of the feed conveyor belt 402, a wedge-shaped discharge baffle 405 provided at the output end of the baffle lifting cylinder 404, and a single material positioning groove 406 provided outside the lower end of the feed conveyor belt 402 and adapted to the raw material rod 1.

[0060] A plurality of supporting teeth 407 are arranged in parallel on the feed conveyor belt 402, and each supporting tooth 407 extends along the width direction of the feed conveyor belt 402. The raw material rod 1 is supported flatly between two adjacent supporting teeth 407, and is equipped with a servo drive motor 403 to realize step-by-step feeding. At the same time, combined with the lifting and discharging baffle 405, the lifting height each time is controlled to be only the height of one raw material rod 1, thereby achieving the effect of single-piece discharging, which is convenient for subsequent single-material detection and processing.

[0061] Specifically, in this embodiment, the supporting teeth 407 are triangular prism-shaped tooth structures, and in other embodiments, rectangular parallelepiped-shaped tooth structures may also be used.

[0062] like Figure 6 As shown, to ensure the effect of single-piece discharging, this embodiment also includes a single-piece feeding assembly disposed between the single-piece positioning groove 406 and the lower end of the feed conveyor belt 402. The single-piece feeding assembly includes a feeding platform 408, a feeding slope disposed at the top of the feeding platform 408 and connected to the single-piece positioning groove 406 at its lower edge, a blanking chute 409 disposed between the feeding platform 408 and the lower end of the feed conveyor belt 402, and a lifting platform 410 that is lifted and lowered within the blanking chute 409. The width of the blanking chute 409 is adapted to the radial width of the raw material rod 1, so that the chute can only accommodate a single raw material rod 1. The top of the lifting platform 410 is provided with a material limiting slope that is compatible with the feeding slope, so that during the rising process of the lifting platform 410, the raw material rod 1 is clamped and limited between the material limiting slope and the side wall of the feeding platform 408, and when the lifting platform 410 rises to the top, the lower edge of the material limiting slope is connected to the upper edge of the feeding slope, and the raw material rod 1 slides along the two connected slopes into the single material positioning groove 406.

[0063] In addition, if Figure 5 As shown, a plurality of grooves are arranged in parallel on the feed slope to reduce the contact area between the feed slope and the raw material rod 1 and reduce product adhesion.

[0064] Because the front-to-back structure of the raw material rod 1 is asymmetrical, a raw material rod placement direction screening mechanism is provided at the single-material positioning slot 406 to avoid downstream processing errors. This mechanism includes a laser sensor 411 located on the workbench 3, a push cylinder 412 located at one end of the single-material positioning slot 406, and a return material collection slot 413 located at the other end of the single-material positioning slot 406. A notch is provided in the sidewall of the single-material positioning slot 406. The detection beam emitted by the laser sensor 411 passes through this notch and is directed to a position within the single-material positioning slot 406 corresponding to the thin polished rod neck 103 on the forward-discharging raw material rod 1. When the raw material rod 1 is placed in the correct discharge direction, the laser sensor 411 can detect the laser signal reflected by the thin polished rod neck 103, which has a smaller reflection area. When the placement direction is incorrect, this position corresponds to the thread rolling processing protrusion 104, which has a larger reflection area. At this time, the push cylinder 412 pushes the raw material rod 1 axially until it falls into the return material collection slot 413, making it easier for staff to collect and re-arrange the material.

[0065] like Figure 7 As shown, the material transport robot 5 includes a truss robot 501, a vertical telescopic cylinder 502 provided on the movable end of the truss robot 501, a gripper cylinder 503 provided on the movable end of the vertical telescopic cylinder 502, and a gripper 504 transmission-connected to the gripper cylinder 503.

[0066] like Figure 8 、 Figure 9As shown, the raw material size detection mechanism 6 includes a raw material detection positioning groove 601 with an opening at the rear end and adapted to the raw material rod 1, a raw material detection limit plate 602 arranged at the front end of the raw material detection positioning groove 601, a detection clearance hole opened on the raw material detection limit plate 602 and adapted to the position of the front cone hole, a raw material detection front mounting plate 603 and a raw material detection rear mounting plate 604 arranged in parallel outside the two ends of the raw material detection positioning groove 601, a raw material length detection cylinder 605 arranged on the raw material detection rear mounting plate 604, a raw material rear detection plate 606 arranged on the moving end of the raw material length detection cylinder 605, and a raw material length detection plate 607 slidingly arranged on the raw material detection rear mounting plate 604 and fixed at the front end to the raw material detection rear detection plate 606 and extending outward. A detection push tube 607, a rear cone hole detection probe 608 movably arranged in the raw material length detection push tube 607 and capable of extending and axially pointing to the rear cone hole, a front cone hole detection cylinder 609 arranged on the raw material detection front mounting plate 603, a raw material front detection plate 610 arranged on the movable end of the front cone hole detection cylinder 609, a front cone hole detection probe 611 slidably arranged on the raw material detection front mounting plate 603 and with its rear end fixed on the raw material detection front mounting plate 610 and extending and pointing to the front cone hole, and a plurality of displacement sensors arranged on the raw material detection front mounting plate 603 and the raw material detection rear mounting plate 604 and whose detection ends are respectively connected to the corresponding raw material length detection push tube 607, the front cone hole detection probe 611, and the rear cone hole detection probe 608.

[0067] During the detection process, the raw material length detection cylinder 605 is first used to push the raw material rear detection plate 606 until the raw material length detection push tube 607 clamps the raw material rod 1 between the front end of the raw material length detection push tube 607 and the raw material detection limit plate 602. At this time, the detection end is connected to the raw material length detection push tube 607 or the displacement sensor of the raw material length detection cylinder 605, and the length of the raw material rod 1 can be calculated based on the displacement distance difference relative to the standard part; at the same time, the depth of the rear cone hole can be obtained based on the deviation of the extension distance of the rear cone hole detection probe 608 extending out of the raw material length detection push tube 607 relative to the standard part; on the other hand, the depth of the front cone hole is calculated by detecting the displacement distance of the front cone hole detection probe 611 or the extension distance of the front cone hole detection cylinder 609, relative to the standard part.

[0068] In order to avoid the influence of residual iron chips on the detection distance during the processing of the tapered hole and the influence of possible iron chips on the raw materials on the quality of the thread rolling, such as Figure 12 As shown, this embodiment also includes a tapered hole blowing mechanism 14 arranged between the single-piece discharge mechanism 4 and the raw material size detection mechanism 6; the tapered hole blowing mechanism 14 includes a blow box 1401, a raw material rod clearance hole 1402 opened at the top of the blow box 1401, and a blow nozzle arranged in the blow box 1401 and used for blowing the tapered holes at both ends of the raw material rod 1 and the rod body.

[0069] To improve the degree of detection automation, a material-free sensor is provided in the raw material detection positioning groove 601 to detect whether the raw material rod is in place, thereby automatically starting or stopping the operation of the raw material length detection cylinder 605 and other devices. In this embodiment, the material sensor is a proximity switch.

[0070] The structure of loading and unloading robot arm 8 is as follows Figure 10 As shown, the robot is equipped with two jaws at its end, one for loading and one for unloading. The unloading jaw has an air blowing device (not shown in the figure). The blowing end of the air blowing device is directed toward the unloading jaw to prevent excessive oil stains on the parts after thread rolling, which could cause splashing during transfer and compromise the sanitary environment at the processing site. In other embodiments, a Yaskawa six-axis robot with two jaws at its end may also be used.

[0071] like Figure 1 、 Figure 11 As shown, two product size detection and air blowing mechanisms 7 are provided, one in front and one in the back, and arranged side by side on the workbench 3. The rear product size detection and air blowing mechanism 7 includes a product detection tank 701 with an opening at the top, a product detection positioning tank 702 with an opening at the front end disposed within the product detection tank 701, a product detection limit plate 703 disposed at the front end of the product detection positioning tank 702, a product detection mounting plate 704 disposed at the rear side of the product detection tank 701, a product detection cylinder 705 disposed on the product detection mounting plate 704, a product detection plate 706 disposed at the movable end of the product detection cylinder 705, a product length detection push rod 707 slidably disposed on the product detection mounting plate 704, with its front end fixed to the product detection plate 706, and sequentially passing through the product detection plate 706 and the side wall of the product detection tank 701 and axially pointing to the rear end of the thread rolled product 2, a displacement sensor with its detection end connected to the product length detection push rod 707, and an oil blowing nozzle 708 and an oil mist collector disposed in the product detection tank 701.

[0072] The front product size detection and air blowing mechanism 7 and the rear product size detection and air blowing mechanism 7 are arranged symmetrically front to back, and the two product detection slots 701 are arranged side by side.

[0073] Similar to the length detection method used in material size detection mechanism 6, during operation, the product detection cylinder 705 pushes the product detection plate 706 until the rolled product 2 is clamped between the product length detection push rod 707 and the product detection stop plate 703. At this point, the axial length of the rolled product 2 is calculated based on the displacement of the product length detection push rod 707. After the rolled product 2 is clamped, the oil nozzle 708 blows air into the rolled product 2, and an oil mist collector prevents oil mist from affecting the environment.

[0074] In order to further reduce the influence of oil mist, this embodiment also includes a cover displacement guide rail 708 provided on one side of the two product inspection slots 701, a displacement seat movable on the cover displacement guide rail 708, and an oil blowing bin cover 709 provided on the displacement seat and adapted to the top opening of the product inspection slot 701; before blowing oil, the oil blowing bin cover 709 is moved to the top opening of the corresponding product inspection slot 701 to avoid oil mist from escaping; at the same time, the staggered operation of the two product size detections and the blowing mechanism 7 can also be achieved, thereby improving work efficiency.

[0075] like Figure 1 As shown, the material receiving mechanism includes a finished product conveyor belt 9 and a defective product conveyor belt 10 arranged in parallel, and servo motors that drive the two conveyor belts respectively.

[0076] This embodiment also includes a movable track 11 disposed on the ground, a movable frame 12 slidably mounted on the movable track 11, and an oil pan 13 mounted on the movable frame 12. The workbench 3 is mounted on the movable frame 12 and located above the oil pan 13. The workbench 3 is also provided with multiple oil drain holes to facilitate the timely drainage of contaminated oil and ensure a clean workbench 3. For safety reasons, a safety fence is also provided around the perimeter of the device.

[0077] During use, multiple raw material rods 1 are placed in the loading bin 401 and stacked on the feed conveyor 402. The raw material rods 1 at the bottom are supported and separated one by one by two adjacent supporting teeth 407. The servo drive motor 403 drives the feed conveyor 402 to transport in a step-by-step manner. When passing the position of the discharge baffle 405, the discharge baffle 405 moves up to a height that allows a raw material rod 1 to pass through. At this time, the step-by-step feeding is combined to realize the discharge of a single raw material rod 1, and then the discharge baffle 405 is lowered.

[0078] The discharged single raw material rod 1 falls onto the lifting platform 410 in the material trough 409 and is limited between the material limiting slope and the side wall of the feeding platform 408. Then, as the lifting platform 410 rises to the point where the material limiting slope is connected to the feeding slope, the raw material rod 1 can slide along the two connected slopes into the single material positioning groove 406.

[0079] Afterwards, the laser sensor 411 works. If the thin polished rod neck 103 is detected, it is placed correctly and the iron filings in the tapered hole and on the rod body are first removed by the tapered hole blowing mechanism through the material transporting robot arm 5, and then transported to the raw material size detection mechanism 6; if not detected, it is placed incorrectly and is pushed into the reverse material collecting trough 413 by the pushing cylinder 412 to be rearranged.

[0080] The raw material rod 1 enters the raw material size detection mechanism 6, and during the clamping process between the raw material detection limit plate 602 and the raw material length detection push tube 607, the length of the raw material rod 1 is obtained through the displacement sensor that is connected to the raw material length detection push tube 607, the length of the front cone hole is obtained through the displacement sensor that is connected to the front cone hole detection probe rod 611, and the length of the rear cone hole is obtained through the displacement sensor that is connected to the rear cone hole detection probe rod 608.

[0081] The raw material rod 1 that fails the size inspection is transported to the defective product conveyor belt 10 by the loading and unloading robot arm 8; the qualified raw material rod 1 is transported to the thread rolling machine by the loading and unloading robot arm 8 for thread rolling, and the resulting thread rolling product is then transported to the product size inspection and blowing mechanism 7 by the loading and unloading robot arm 8, and placed in the product inspection positioning groove 702. In the process of the thread rolling product 2 being clamped by the product length detection push rod 707 and the product inspection limit plate 703, the axial length of the thread rolling product 2 is calculated, and at the same time, the displacement seat is moved to make the oil blowing bin cover 709 close the product inspection groove 701, so that the thread rolling product 2 is blown through the oil blowing nozzle 708, and the oil mist collector is used to prevent the oil mist from affecting the environment.

[0082] The thread rolling products 2 that fail the size inspection are transported to the defective product conveyor belt 10 by the loading and unloading robot arm 8; the qualified thread rolling products 2 are transported to the finished product conveyor belt 9 by the loading and unloading robot arm 8.

[0083] In other embodiments, the defective product conveyor belt 10 and the finished product conveyor belt 9 are respectively provided with corresponding detection sensors to count the number of finished products and defective products.

[0084] In addition, the bottoms of the raw material detection positioning slot 601 and the product detection slot 701 are fixed to the corresponding base or bottom plate through butterfly bolts and positioning pins to achieve a quick replacement effect.

[0085] The above description of the embodiments is intended to facilitate understanding and use of the invention by those skilled in the art. It will be apparent that those skilled in the art can readily make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the present invention is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention, without departing from the scope of the present invention, should be within the scope of protection of the present invention.

Claims

1. An automatic loading and unloading device for a thread rolling machine, used for cooperating with a thread rolling machine to process a raw material rod (1) into a thread rolling product (2), wherein the raw material rod (1) comprises a support end (101), a splined outer protrusion (102), a thin polished rod neck (103), and a thread rolling outer protrusion (104) connected in sequence along the axial direction, the end face of the support end (101) is provided with a front tapered hole, and the end face of the thread rolling outer protrusion (104) is provided with a rear tapered hole; characterized in that, The device includes A single-piece discharging mechanism (4) for realizing single-piece discharging of a raw material rod (1), comprising a loading bin (401) for storing a plurality of raw material rods (1), a feeding conveyor belt (402) tiltedly arranged in the loading bin (401), a servo drive motor (403) connected to the feeding conveyor belt (402), a discharging baffle (405) lifted and arranged above the lower end of the feeding conveyor belt (402), and a single-material positioning groove (406) arranged outside the lower end of the feeding conveyor belt (402) and adapted to the raw material rod (1); a plurality of supporting teeth (407) are arranged in parallel on the feeding conveyor belt (402), the supporting teeth (407) extending along the width direction of the feeding conveyor belt (402), and the raw material rod (1) is placed flat on two adjacent supporting teeth (407); A material transporting mechanical arm (5) is used to transport the single piece of material discharged from the single piece discharging mechanism (4) to the raw material size detection mechanism (6); A raw material size detection mechanism (6) is used to detect the length and end taper hole depth of the raw material rod (1); A product size detection and air blowing mechanism (7) for detecting the length of the thread rolling product (2); The loading and unloading mechanical arm (8) is used to transport the raw material rod (1) that has passed the length and end taper hole depth inspection to the thread rolling machine, transport the thread rolling product (2) to the product size inspection and blowing mechanism (7), and transport the thread rolling product (2) that has passed the length inspection to the material receiving mechanism; The single-piece discharging mechanism (4) further includes a single-piece feeding assembly provided between the single-piece positioning groove (406) and the lower end of the feeding conveyor belt (402), the single-piece feeding assembly including a feeding platform (408), a feeding slope provided at the top of the feeding platform (408) and having its lower edge connected to the single-piece positioning groove (406), a blanking trough (409) provided between the feeding platform (408) and the lower end of the feeding conveyor belt (402), and a lifting platform (410) provided in the blanking trough (409). The width of the blanking trough (409) is adapted to the radial width of the raw material rod (1); the top of the lifting platform (410) is provided with a limiting inclined surface adapted to the feeding inclined surface, so that during the lifting platform (410) rising process, the raw material rod (1) is limited between the limiting inclined surface and the side wall of the feeding platform (408), and when the lifting platform (410) rises to the top, the lower edge of the limiting inclined surface is connected to the upper edge of the feeding inclined surface; The single material positioning groove (406) is provided with openings at both ends along the axial direction of the raw material rod (1); The device also includes a raw material rod placement direction screening mechanism, which includes a laser sensor (411), a material pushing cylinder (412) provided at an opening at one end of the single material positioning groove (406), and a reverse material collecting groove (413) provided at an opening at the other end of the single material positioning groove (406); The laser sensor (411) points to a position in the single material positioning groove (406) corresponding to the thin polished rod neck (103) on the raw material rod (1) being discharged in the forward direction.

2. The automatic loading and unloading device for a thread rolling machine according to claim 1, characterized in that: The device further comprises a tapered hole blowing mechanism (14) disposed between the single-piece discharging mechanism (4) and the raw material size detecting mechanism (6); The tapered hole blowing mechanism (14) comprises a blowing box (1401), a raw material rod clearance hole (1402) provided on the top of the blowing box (1401), and a blowing nozzle provided in the blowing box (1401).

3. The automatic loading and unloading device for a thread rolling machine according to claim 1, characterized in that: The raw material size detection mechanism (6) comprises a raw material detection positioning groove (601) with a rear end opening, a raw material detection limit plate (602) provided at the front end of the raw material detection positioning groove (601), a raw material length detection push tube (607) provided at the rear end opening and sliding along the axial direction of the raw material rod (1), a rear tapered hole detection probe (608) provided in the raw material length detection push tube (607) and extending from the front end, a detection clearance hole provided on the raw material detection limit plate (602), and a front tapered hole detection probe (611) capable of moving along the axial direction of the raw material rod (1) and passing through the detection clearance hole; The raw material length detection push tube (607), the front cone hole detection probe (611), and the rear cone hole detection probe (608) are respectively connected to corresponding displacement sensors.

4. The automatic loading and unloading device for a thread rolling machine according to claim 1, characterized in that: The material transporting robot arm (5) comprises a truss robot arm (501), a vertical telescopic cylinder (502) provided on the movable end of the truss robot arm (501), a gripper cylinder (503) provided on the movable end of the vertical telescopic cylinder (502), and a gripper (504) transmission-connected to the gripper cylinder (503).

5. The automatic loading and unloading device for a thread rolling machine according to claim 1, characterized in that: The loading and unloading mechanical arm (8) is a six-axis robot with double grippers at the end.

6. The automatic loading and unloading device for a thread rolling machine according to claim 1, characterized in that: The product size detection and blowing mechanism (7) comprises a product detection groove (701) with an opening at the top, a product detection positioning groove (702) provided in the product detection groove (701) and open at one end, a product detection limit plate (703) provided at the other end of the product detection positioning groove (702), a product length detection push rod (707) sliding along the axial direction of the thread rolling product (2) and provided at the end opening, a displacement sensor connected to the product length detection push rod (707), and an oil blowing nozzle (708) and an oil mist collector provided in the product detection groove (701).

7. The automatic loading and unloading device for a thread rolling machine according to claim 6, characterized in that: The device comprises two product size detection and air blowing mechanisms (7) arranged in parallel, a cover plate displacement guide rail (708) arranged on one side of the two product detection slots (701), a displacement seat movably arranged on the cover plate displacement guide rail (708), and an oil blowing bin cover plate (709) arranged on the displacement seat and adapted to the top opening of the product detection slot (701).

8. The automatic loading and unloading device for a thread rolling machine according to claim 1, characterized in that: The material receiving mechanism comprises a finished product conveyor belt (9) and a defective product conveyor belt (10) arranged in parallel.

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