Zircon blank double-screening-station single-row feeding system

Abstract

The zircon blank double-screening-station single-row feeding system comprises two sets of discharging and screening mechanisms, and each set of discharging mechanism comprises a discharging mechanism and a screening mechanism; the single-row suction transfer mechanism comprises a single-row vacuum suction pipe which is provided with vacuum suction holes in one-to-one correspondence with a row of feeding counter bores in the gang drill plate; the secondary positioning mechanism comprises a group of clamping blocks which are switched between a clamping state and an opening state, and a positioning groove corresponding to the zircon blank is formed between the two clamping blocks; and the lifting driving mechanism drives the clamp to descend to a clamp needle on the lifting material taking mechanism to pick up the positioned single-row blank from the secondary positioning mechanism. Full-automatic and continuous feeding can be achieved.

Description

A single-row feeding system for dual-screening of zircon billets Technical Field

[0001] This invention relates to the technical field of automatic zircon grinding systems, and in particular to a single-row feeding system for zircon blanks with a double-screening station. Background Technology

[0002] In the processing of zircon billets, traditional feeding methods mainly rely on manual operation or semi-automated equipment to complete the screening, discharge, and transfer processes. Current technology typically uses a screening machine to sieve the billets into grooved molds, then manually moves the molds to the loading station for clamping and positioning, and finally the unloading station removes the billets. However, this method has the following significant drawbacks, severely restricting overall production speed and processing quality:

[0003] 1. Low level of automation and high dependence on manual labor: In the traditional screening and feeding process, especially in the material transfer process, manual operation is still heavily relied upon, resulting in poor connection between various processes, low work efficiency, and difficulty in adapting to the needs of large-scale and continuous production.

[0004] 2. Poor positioning consistency affects processing accuracy: Since zircon blanks need to be precisely arranged on a row of feeding needles, traditional screening and positioning methods are insufficient in controlling the uniformity and consistency of blank distribution, which can easily lead to deviations in subsequent polishing processes, directly affecting the quality and yield of finished products.

[0005] 3. Insufficient material supply continuity, unable to match production rhythm: Subsequent grinding processes usually have a short material picking cycle, but traditional screening and positioning methods have slow material supply speed and inconsistent rhythm, making it difficult to achieve continuous and timely material supply, causing equipment to wait and restricting overall production efficiency.

[0006] These shortcomings together make traditional feeding methods a key bottleneck restricting the transformation of zircon processing towards efficient, high-quality, and intelligent production. Summary of the Invention

[0007] To address the aforementioned problems, the present invention aims to provide a single-row feeding system for a double-screening station of zircon billets, which can achieve fully automatic and continuous feeding and improve the positioning consistency of zircon feed onto the picking needle.

[0008] A single-row feeding system for zircon billets with dual screening stations includes:

[0009] Two sets of material feeding and screening mechanisms, each set including a material feeding mechanism and a screening mechanism.

[0010] The feeding mechanism includes a blank box and a vibrator, wherein the vibrator drives the blank box to vibrate and feed the blank.

[0011] The screening mechanism is located at the discharge end of the corresponding unloading mechanism and receives the blanks supplied by the unloading mechanism. The screening mechanism includes a drilling plate and a first driving mechanism. The drilling plate is provided with one or more rows of inlet countersinks that match the zircon blanks. The first driving mechanism drives the drilling plate to sway and vibrate, driving the blanks on it to enter the inlet countersinks one by one for discharge.

[0012] A single-row suction and transfer mechanism includes a single-row vacuum suction mechanism, which is provided with vacuum adsorption holes that correspond one-to-one with a row of material inlet holes on a drilling plate; the single-row vacuum suction mechanism reciprocates between a screening mechanism and a secondary positioning mechanism.

[0013] The secondary positioning mechanism includes a set of clamping blocks that can switch between a clamping state and an open state, and a positioning groove corresponding to the zircon billet is provided between the two clamping blocks.

[0014] The lifting and picking mechanism includes a clamp and a lifting drive mechanism. The clamp is equipped with a clamping pin. The lifting drive mechanism drives the clamp to descend to the clamping pin, which picks up the single row of blanks that have been positioned by the secondary positioning mechanism.

[0015] Preferably, two sets of material feeding and screening mechanisms alternately and continuously screen and discharge materials.

[0016] Preferably, the screening mechanism and the secondary positioning mechanism of the two sets of material feeding and screening mechanisms are arranged side by side, all located on the moving path of the single-row suction and transfer mechanism; the secondary positioning mechanism is located directly below the material picking position of the lifting and picking mechanism.

[0017] Preferably, the first driving mechanism includes a swaying mechanism and a vibration mechanism. The vibration mechanism is mounted on the rotating frame and drives the drilling plate to generate a small-amplitude linear reciprocating vibration in the front-to-back direction relative to the rotating frame. The swaying mechanism drives the rotating frame to sway at any angle.

[0018] Preferably, the screening mechanism includes a material box assembly, and a drilling plate is detachably installed on the receiving surface of the material box assembly; after the drilling plate is installed in place, a blank flat area is provided near each row of material inlet holes as a buffer material collection area; baffles are provided around the material box assembly.

[0019] Preferably, the single-row suction and transport mechanism includes a horizontal drive component, a vertical lifting component, and a vacuum suction component; the vacuum suction component includes a single-row vacuum suction tube, which is provided with vacuum adsorption holes that correspond one-to-one with the row of material inlet holes on the drilling plate, and the single-row vacuum suction tube is connected to a vacuum pumping device; the horizontal drive component drives the single-row vacuum suction tube to move horizontally; the vertical lifting mechanism drives the single-row vacuum suction tube to move vertically.

[0020] Preferably, the horizontal drive assembly includes a power assembly and a slide rail assembly. The slide rail assembly includes a slide rail and a sliding seat slidably mounted on the slide rail. The power assembly drives the sliding seat to move along the slide rail. The vertical lifting assembly is mounted on the sliding seat, and a single row of vacuum suction tubes is vertically and vertically mounted on the vertical lifting assembly.

[0021] Preferably, the secondary positioning mechanism includes a set of clamping blocks that can switch between a clamped state and an open state, and a positioning groove corresponding to the zircon billet is provided between the two clamping blocks.

[0022] Preferably, the set of clamping blocks of the secondary positioning mechanism includes a first clamping block and a second clamping block, the first clamping block and the second clamping block are arranged parallel to each other, and the first clamping block has a positioning groove on the side facing the first clamping block and / or the second clamping block has a positioning groove on the side facing the first clamping block; the driving mechanism drives the first clamping block and the second clamping block to clamp each other or move away from each other.

[0023] Preferably, the first clamping block is relatively fixed and serves as a static reference surface for the clamping action. The second clamping block moves relative to the first clamping block under the drive of the moving cylinder to switch between the opening and clamping states of the secondary positioning mechanism. The positioning groove is set on the side of the second clamping block facing the first clamping block. A moving guide is provided to guide the movement of the second clamping block.

[0024] The above solution, by setting up two sets of material feeding and screening mechanisms in conjunction with a single-row suction and conveying mechanism, can greatly shorten the waiting interval between "screening" and "feeding". Specifically, while one set of screening mechanisms is picking up material, the other set is already screening, greatly improving the feeding capacity per unit time. Furthermore, even if one of the two sets of material feeding and screening mechanisms needs to stop due to malfunction or maintenance, the other station can still operate independently. The blank is positioned initially by the drilling plate in the screening mechanism, and then repositioned a second time before feeding, ensuring the consistency of the row of blanks fed and guaranteeing subsequent processing accuracy. Material feeding, screening, conveying, positioning, and picking are all automated in the system, requiring no manual intervention, effectively reducing labor costs and increasing automation. The material feeding and screening mechanism, single-row suction and conveying mechanism, secondary positioning mechanism, and lifting and picking mechanism in the system adopt a modular design, integrated and installed on the same frame, with a compact layout and easy quick disassembly and maintenance of individual modules. Attached Figure Description

[0025] Figure 1 is a schematic diagram showing the positional relationship of each part in the system of this application;

[0026] Figure 2 is a schematic diagram of the material feeding mechanism;

[0027] Figure 3 is a schematic diagram of the screening mechanism;

[0028] Figure 4 is a structural schematic diagram of the material box assembly;

[0029] Figure 5 is a schematic diagram of the vibration mechanism;

[0030] Figure 6 is a cross-sectional view of Figure 5;

[0031] Figure 7 is a schematic diagram of the eccentric shaft;

[0032] Figure 8 is a schematic diagram of a single-row suction and transfer mechanism;

[0033] Figure 9 is a schematic diagram of the secondary positioning mechanism;

[0034] Figure 10 is a schematic diagram of the lifting and material handling mechanism.

[0035] Figure label:

[0036] Material feeding mechanism 1, blank box 101, vibrator 102, material feeding support rod 103, material feeding ramp 104.

[0037] Screening mechanism 2, material box assembly 201, drilling plate 2011, positioning pin 2012, lifting ring 2013, rear baffle 2014, movable baffle 2015, front baffle 2016, collecting plate 2017, rotating frame 202, oscillating mechanism 203, vibration mechanism 204, vibration drive mechanism 2041, eccentric shaft 2042, connecting rod 2043.

[0038] The single-row suction and transfer mechanism 3 includes a horizontal drive assembly 301, a slide rail assembly 3011, a drive wheel 3012, a pulley 3013, a vertical lifting assembly 302, and a single-row vacuum suction tube 303.

[0039] Secondary positioning mechanism 4, first clamping block 401, second clamping block 402

[0040] Lifting and picking mechanism 5, lifting drive mechanism 501, clamping mechanism 502, clamping pin 503, clamping bracket 504, clamp 505, heating mechanism 506. Detailed Implementation

[0041] The embodiments of the present invention are described in detail below.

[0042] As shown in Figure 1, this embodiment provides a single-row feeding system for a double-screening station of zircon billets, including a frame, and a material dropping and screening mechanism, a single-row suction and transfer mechanism 3, a secondary positioning mechanism 4, and a lifting and picking mechanism 5 installed on the frame.

[0043] The system includes two sets of material feeding and screening mechanisms, each set consisting of a material feeding mechanism 1 and a screening mechanism 2. Material feeding mechanism 1 and screening mechanism 2 are the core components of the system to achieve automated and continuous feeding. By having the two sets of material feeding and screening mechanisms work alternately, continuous feeding can be achieved, shortening the waiting interval.

[0044] The following is a detailed description of the blanking mechanism.

[0045] As shown in Figure 2, the feeding mechanism 1 includes a blank box 101 and a vibrator 102. The blank box 101 stores pre-added zircon blanks, and the vibrator 102 is connected to the blank box 101 to provide vibration force, driving the blank box 101 to vibrate and feed the blanks. In a specific embodiment, the discharge end of the blank box 101 faces the receiving surface of the screening mechanism 2, and the screening mechanism 2 receives the zircon blanks automatically fed from the blank box 101. In a preferred embodiment, a feeding ramp 104 is provided at the discharge port of the blank box 101 to guide the feeding to the corresponding position of the screening mechanism 2. In a specific embodiment, in a set of feeding and screening mechanisms, one screening mechanism 2 can receive blanks from the discharge ends of one or more blank boxes 101. Multiple discharge ends can face different positions on the receiving surface of the screening mechanism 2, which facilitates the rapid filling of the discharge groove on the discharge plate of the screening mechanism 2 during subsequent screening, thereby improving screening efficiency. To achieve the above method, in one optional embodiment, a material feeding mechanism 1 is provided at both ends of the material feeding and screening mechanism 2 in a set of material feeding and screening mechanisms to supply material from both ends of the material feeding mechanism 2; alternatively, two or more material feeding mechanisms 1 may be provided. In other optional embodiments, a blank box 101 may be provided with one or more discharge ends that supply material to one or more material feeding mechanisms 2.

[0046] Furthermore, the blank box 101 and vibrator 102 of the blanking mechanism 1 are located above the single-row suction and transfer mechanism 3 to avoid interference between the blanking and transfer processes. In one specific embodiment, the blank box 101 and vibrator 102 are mounted on the blanking support rod 103 and raised by the blanking support rod 103. In other embodiments, the blank box 101 and vibrator 102 may also be mounted on the upper part of the frame.

[0047] The working process of the feeding mechanism 1 is as follows: When the system starts working, the vibrator 102 starts and generates continuous and regular vibration on the blank box 101; under the dual action of vibration and gravity, the zircon blanks in the blank box 101 begin to loosen and flow out in an orderly manner along the outlet of the blank box 101; the outflowing zircon blanks are guided by the feeding ramp 104 or the feeding guide to the specific position of the corresponding screening mechanism 2 to achieve automatic feeding.

[0048] The following is a detailed description of the screening mechanism.

[0049] As shown in Figure 3, the screening mechanism 2 is located at the discharge end of the corresponding feeding mechanism 1, receiving the blanks supplied by the feeding mechanism 1. It receives the zircon blanks and, through vibration and swaying, guides the blanks one by one into the preset holes, achieving a neat arrangement. The screening mechanism 2 includes a drilling plate 2011 and a first driving mechanism. The drilling plate 2011 has one or more rows of countersunk holes. The first driving mechanism drives the drilling plate 2011 to sway and vibrate, driving the zircon blanks on it to enter the countersunk holes one by one for discharge. The countersunk holes on the drilling plate 2011 are pre-processed according to the shape, number of rows, and number of columns of the zircon blanks. The shape of each countersunk hole matches the shape of a single zircon blank, thus, through its specific shape and depth design, it can orient and limit the blanks falling into it. In the above structure, the first driving mechanism provides a power source to drive the drilling plate 2011 to perform the required composite motion, enabling the zircon blanks on it to enter the countersunk holes, ultimately completing the directional drilling.

[0050] As shown in Figure 4, the screening mechanism 2 includes a material box assembly 201, and a drilling plate 2011 is disposed on the receiving surface of the material box assembly 201. The receiving surface refers to the side that receives the blank material from the feeding mechanism 1, which is the working surface. Each row of feed holes on the drilling plate 2011 has a buffer zone of a preset width on one side. The buffer zone is a blank and flat area. The setting of the buffer zone can increase the probability of feeding (zircon blank entering the countersink).

[0051] In a preferred embodiment, the drilling plate 2011 is detachably mounted on the material box assembly 201. This configuration allows for the selection of the appropriate drilling plate 2011 based on the specifications of the current zircon blanks, improving the versatility of the screening mechanism 2. Furthermore, it eliminates the need to replace the entire material box assembly 201, resulting in lower operating costs. In a specific embodiment, a positioning structure is provided between the material box assembly 201 and the drilling plate 2011 to facilitate positioning during installation. In one specific embodiment, the positioning structure consists of matching positioning holes and positioning pins 2012. This embodiment does not limit the specific detachable connection structure between the material box assembly 201 and the drilling plate 2011; only a reliable connection is required. As shown in Figure 4, the drilling plate 2011 is provided with several lifting rings 2013 for easy installation and removal.

[0052] After the drilling plate 2011 is installed, a blank flat area is provided near each row of feed countersinks as a buffer collection area. The buffer collection area is characterized by its highly smooth and flat surface, which ensures that the billet can slide easily on it and facilitates the guidance of the zircon billet into the feed countersink of the drilling plate 2011.

[0053] The material box assembly 201 is surrounded by baffles to prevent the billets from falling during vibration discharge or tilting. The rear baffle 2014 is higher than the front baffle 2016, allowing the material box assembly 201 to collect the drill bit into the higher plane area by tilting the assembly towards that side. A closable opening is correspondingly provided on the higher baffle on that side, along with a removable movable baffle 2015. During normal drilling and material collection, this baffle is closed, forming a closed "material frame." When the collected billets need to be recycled, simply remove the movable baffle 2015, and the billets will automatically flow out from the opening, facilitating collection and reuse. For easier material collection, a collecting plate 2017 is preferably provided on the receiving surface of the material box near the rear baffle 2014. This plate has a highly smooth and flat surface, ensuring that the billets can slide easily on it, facilitating the concentration of zircon billets.

[0054] As shown in Figure 4, the first driving mechanism in this embodiment includes a swaying mechanism 203 and a vibration mechanism 204. To avoid interference between the swaying mechanism 203 and the vibration mechanism 204, in this embodiment, the material box assembly 201 and the vibration mechanism 204 are mounted on the rotating frame 202. The output end of the vibration mechanism 204 directly acts on the material box assembly 201; the output end of the swaying mechanism 203 acts on the rotating frame 202. The swaying mechanism 203 drives the rotating frame 202 and the material box assembly 201 and the vibration mechanism 204 on it to sway synchronously at any angle.

[0055] In this embodiment, the rotating frame 202 has a rotation axis, and the yaw mechanism 203 includes a yaw drive mechanism. The yaw drive mechanism acts as a power source to drive the rotating frame 202 to rotate around its rotation axis, causing the material box on it to tilt back and forth. In a specific embodiment, a set of support seats is provided, and the rotating frame 202 is mounted on the support seats via bearings; the yaw drive mechanism is mounted on the support seats. To improve the transmission efficiency of the yaw drive mechanism, in a preferred embodiment, the power output shaft of the yaw drive mechanism is coaxially arranged with the rotation axis of the rotating frame 202, and the power output shaft of the yaw drive mechanism is directly connected to the rotating frame 202. In other optional embodiments, the power output shaft of the yaw drive mechanism and the rotation axis can also be offset from each other, and the power output shaft of the yaw drive mechanism is connected to the rotating frame 202 via a transmission mechanism. The transmission mechanism can be a common transmission mechanism such as a transmission gear, and is not limited here. In one specific embodiment, the oscillation drive mechanism includes a motor and a reducer. The output shaft of the motor is directly connected to the input end of the reducer, preferably a servo motor and a cycloidal pinwheel reducer. The servo motor provides precise control, and the output shaft of the cycloidal pinwheel reducer allows reciprocating oscillation within a certain angle range, driving the rotating frame 202 to oscillate. The system provides a port for setting the oscillation angle of the oscillation drive mechanism. The servo motor drives the cycloidal pinwheel reducer to smoothly reciprocate the rotating frame 202 and the material box assembly 201 on it between two set limit angles.

[0056] As shown in Figure 5, the vibration mechanism 204 in this embodiment includes a vibration drive mechanism 2041, an eccentric shaft 2042, and a connecting rod 2043. The vibration drive mechanism 2041 includes a servo motor and a reducer connected to each other, and serves as the power source for the vibration mechanism 204. As shown in Figure 6, the eccentric shaft 2042 is coaxially arranged with the vibration drive mechanism 2041. One end of the eccentric shaft 2042 is connected to the output end of the vibration drive mechanism 2041, and the other end of the eccentric shaft 2042 is connected to the first end of the connecting rod 2043. The second end of the connecting rod 2043 is connected to the material box assembly 201. The rotation center lines of the first and second ends of the connecting rod 2043 are parallel to each other. As shown in Figure 7, since the central axis of the eccentric shaft 2042 and the rotation center line are misaligned, the connecting rod 2043 driven by the eccentric shaft 2042 can drive the material box assembly 201 to generate linear reciprocating motion in the front-back direction relative to the rotating frame 202. The eccentricity of the eccentric shaft 2042 can control the vibration amplitude in the front-back direction. For example, in this embodiment, the vibration amplitude is controlled by an eccentricity of 5mm, which causes the blank falling on the material box assembly 201 to vibrate at a high frequency and a small amplitude. In combination with the swing mechanism, the blank can be flipped and slid in the material box assembly 201 to achieve compound motion in multiple directions.

[0057] In this embodiment, the eccentric shaft 2042 is connected to the first end of the connecting rod 2043 via a bearing, and the second end of the connecting rod 2043 is connected to the material box assembly 201 via a bearing and a pin, thereby converting the circular motion of the vibration drive mechanism 2041 into the forward and backward motion of the material box assembly 201. In a preferred embodiment, the material box assembly 201 and the rotating frame 202 are connected via a guide rail and a slider for forward and backward guidance. The guide rail and slider restrict the material box assembly 201 and the rotating frame 202 to only move in the forward and backward direction, and prevent lateral movement or rotation.

[0058] To simplify the installation of the vibration mechanism 204, in this embodiment the vibration mechanism 204 includes a mounting plate, and the vibration drive mechanism 2041 is mounted on the mounting plate. The mounting plate is detachable and can be installed on the frame, so that the modular vibration mechanism 204 can be installed on the frame after the assembly of the vibration mechanism 204 is completed, which is convenient for disassembly.

[0059] In the screening mechanism 2, the vibration mechanism 204 provides high-frequency, low-amplitude vibration to the rotating frame 202, keeping the billet in an "active" jumping and sliding state. The oscillating mechanism 203 then superimposes low-frequency tilt angle changes to guide the billet towards the drilling area. Through the coordination of these two movements, drilling efficiency and feed rate can be maximized. In specific embodiments, different vibration and oscillation frequencies can be used to suit the characteristics of billets with different shapes.

[0060] The screening mechanism 2 mainly participates in the drilling and unloading stages. During the drilling stage, the rotation angle of the sway mechanism 203 is smaller than that during the unloading stage. During the unloading stage, the sway mechanism 203 drives the material box assembly 201 to tilt significantly to one side (the side with the opening) to collect excess blanks.

[0061] The working process of the screening mechanism 2 is as follows: After the material box assembly 201 of the screening mechanism 2 receives the blank material from the hopper, the screening mechanism 2 starts to start the drilling process. Under the combined motion of the sway mechanism 203 and the vibration mechanism 204, part of the blank material falls into the countersunk hole of the drilling plate 2011, while the other part slides back and forth in the smooth material collection buffer area. By controlling the sway mechanism 203 to tilt the entire material box assembly 201 significantly towards the side with the opening, excess blank material that has not entered the countersunk hole can be concentrated and accumulated. Then, the opening is opened to collect the excess blank material for the next drilling process. Furthermore, after the drilling of a batch of blank material is completed, the single-row suction and transfer mechanism 3 moves to the row of inlet countersunk holes / blank material on the drilling plate 2011 to collect the material for the next process. After the screening mechanism 2 completes the drilling of a batch of blank material, another set of material dropping screening mechanisms starts to work to reduce the long waiting time caused by waiting for the transfer of blank material and improve the overall efficiency of the system in the screening and drilling stage.

[0062] The following is a detailed description of the single-row suction and transfer mechanism.

[0063] As shown in Figure 8, the single-row suction and transfer mechanism 3 reciprocates between two sets of material feeding and screening mechanisms and the secondary positioning mechanism 4. In this embodiment, the single-row suction and transfer mechanism 3 includes a horizontal drive component 301, a vertical lifting component 302, and a vacuum suction component. The vacuum suction component includes a single-row vacuum suction tube 303, which has vacuum suction holes corresponding one-to-one with a row of material inlet holes on the drilling plate 2011. Here, "one-to-one correspondence" means that the number and spacing of the vacuum suction tubes perfectly match the number and spacing of the row of blanks on the drilling plate 2011, thus enabling the suction of one row of zircon blanks through the vacuum suction holes. The single-row vacuum suction tube 303 is connected to a vacuum pump. When material needs to be removed, the vacuum pump operates by using negative pressure to suction one row of zircon blanks in the material inlet holes; when material needs to be released, the vacuum is broken. The single-row vacuum suction tube 303 can be lifted and lowered on the vertical lifting component 302, driven by the vertical lifting component 302 to complete the descent for material removal and placement. The horizontal drive assembly 301 drives the vertical lifting assembly 302 and its single-row vacuum suction tube 303 to move horizontally between different workstations.

[0064] The horizontal drive assembly 301 includes a power assembly and a slide rail assembly 3011. The slide rail assembly 3011 includes a slide rail and a sliding seat slidably mounted on the slide rail. The power assembly drives the sliding seat to move along the slide rail. In this embodiment, the power assembly includes a motor, a drive wheel 3012, and a pulley 3013 (drive belt), using belt drive to move the sliding seat. In other embodiments, other transmission methods such as sprockets can also be used. This embodiment uses a belt drive scheme, which allows one motor to drive two slide rail assemblies 3011 to move synchronously, and the synchronous control of the two slide rail assemblies 3011 is simpler.

[0065] The vertical lifting assembly 302 is mounted on the sliding seat and moves along the slide rail with the sliding seat. The vertical lifting assembly 302 includes a lifting cylinder, and the extension end of the lifting cylinder drives the single-row vacuum suction tube 303 to rise and fall. In this embodiment, two sets of vertical lifting assemblies 302 are provided with support from both ends of the single-row vacuum suction tube 303, and the two sets of vertical lifting assemblies 302 operate synchronously.

[0066] The working process of the single-row suction and transfer mechanism 3 is as follows: In the initial state, the transfer mechanism is parked near the secondary positioning mechanism 4 / screening mechanism 2, waiting for operation. The single-row vacuum suction tube 303 is in a high position, and the vacuum is closed. After screening is completed, the horizontal drive component 301 drives the sliding block on it to move the single-row vacuum suction tube 303 to the screening mechanism 2 where screening is completed, until the vacuum suction hole on the single-row vacuum suction tube 303 is precisely aligned with the top of a certain row of blanks. In a specific embodiment, the moving distance can be precisely controlled by the encoder of the servo motor, or a position sensor can be set to assist in positioning.

[0067] Upon reaching the target position, the vertical lifting component 302 activates, driving the single-row vacuum suction tube 303 to descend to a preset height to prepare for material retrieval. The vacuuming device is activated, generating negative pressure within the single-row vacuum suction tube 303, thus simultaneously and reliably adsorbing the entire row of materials onto the suction tube. Then, the vertical lifting component 302 activates again, driving the single-row vacuum suction tube 303 to rise to the preset height. The horizontal drive component 301 then operates again, driving the single-row vacuum suction tube 303, carrying a row of zircon blanks, to move directly above the positioning slot area of ​​the secondary positioning mechanism 4, maintaining a vacuum state throughout this process. Afterward, the vertical lifting component 302 activates again, lowering the suction tubes adsorbing the blanks to a position close to the positioning slot of the secondary positioning mechanism 4. Once in position, the vacuuming device breaks the vacuum, and the entire row of blanks falls into the vicinity of the positioning slot under gravity. The vertical lifting component 302 then drives the single-row vacuum suction tube 303 back to its high position, awaiting / performing the next cycle.

[0068] The following is a detailed description of the secondary positioning mechanism.

[0069] The secondary positioning mechanism 4 is used to clamp and precisely position the material after the single-row suction and transfer mechanism 3 has finished discharging it, so as to ensure the consistency of a row of zircon blanks and that the clamping needle 503 of the lifting and picking mechanism 5 can pick up the whole row of blanks at once.

[0070] The secondary positioning mechanism 4 includes a set of clamping blocks that can switch between a clamped state and an open state. A positioning groove corresponding to the zircon billet is provided between the two clamping blocks. When the single-row suction and transfer mechanism 3 feeds the material to the secondary positioning mechanism 4, one set of clamping blocks is in the open state to facilitate the placement of the zircon billet. After the single-row suction and transfer mechanism 3 finishes feeding the material, one set of clamping blocks switches to the clamped state and positions the zircon billet through the positioning groove.

[0071] As shown in Figure 9, in this embodiment, the secondary positioning mechanism 4 includes a set of clamping blocks, including a first clamping block 401 and a second clamping block 402. The first clamping block 401 and the second clamping block 402 are arranged parallel to each other. Positioning grooves are provided on the side of the first clamping block 401 facing the first clamping block 401 and / or the side of the second clamping block 402 facing the first clamping block 401. The driving mechanism drives the first clamping block 401 and the second clamping block 402 to clamp or move away from each other. In this embodiment, the driving mechanism is a moving cylinder. The first clamping block 401 is relatively fixed and serves as a static reference surface for the clamping action. Its inner side (the side facing the second clamping block 402) is usually machined to be very flat and vertical. The second clamping block 402 moves relative to the first clamping block 401 under the drive of the moving cylinder to switch the secondary positioning mechanism 4 between the open and clamping states. The second clamping block 402 has a row of positioning grooves on the side facing the first clamping block 401. The shape and spacing of these positioning grooves perfectly match the shape and arrangement of the single row of zircon blanks, and correspond one-to-one with the arrangement of the clamping pins 503 on the subsequent material handling fixture. Their function is not only to accommodate the blanks, but also to provide radial constraint and angular correction. Preferably, the secondary positioning mechanism 4 also includes a secondary positioning pad, which serves as the mounting base for the entire mechanism, fixed to the frame, and provides a stable foundation for all components of the secondary positioning mechanism 4. In a preferred embodiment, the second clamping block 402 is guided by a set of slide rail assemblies or guide rod assemblies to ensure smooth movement and avoid misalignment during clamping.

[0072] The working process of the secondary positioning mechanism 4 is as follows: Before the single-row suction and transfer mechanism 3 arrives with the blank, the secondary positioning mechanism 4 is in the open state, waiting to receive the material. The single-row suction and transfer mechanism 3 releases a row of blanks it has sucked up between the first clamping block 401 and the second clamping block 402. At this time, due to the positioning settings, the blank is located in front of the positioning groove, but its position and orientation are loose and inaccurate. After the single-row suction and transfer mechanism 3 finishes releasing the material, it rises away from the interference area with the secondary positioning mechanism 4. Then, the moving cylinder is activated, driving the first clamping block 401 and the second clamping block 402 to switch to the clamping state. During the movement of the second clamping block 402, the blank is adjusted to the preset position and posture under the guidance of the positioning groove and the push of the side arm, until the second clamping block 402 clamps the entire row of blanks between the positioning groove and the inner plane of the first clamping block 401. It maintains the current state and waits for the lifting and picking mechanism 5 of the next process to pick up the material. After picking up the material, the secondary positioning mechanism 4 switches to the open state and waits for the next cycle.

[0073] The following is a detailed description of the lifting and unloading mechanism.

[0074] As shown in Figure 10, the lifting and picking mechanism 5 is used to transfer a single row of pre-positioned blanks to the fixture of subsequent processing equipment (such as a grinding and polishing machine). The lifting and picking mechanism 5 mainly includes a fixture clamping mechanism 502, a lifting drive mechanism 501 that drives the fixture clamping mechanism 502 to lift and pick up the blanks, and a heating mechanism 506 that heats the fixture pins 503 to pick up the blanks. The fixtures 505 and 503, the fixture clamping mechanism 502, and the heating mechanism 506 are common structures on existing automatic grinding and polishing machines and will not be described in detail here. The improvement of the lifting and picking mechanism 5 lies in the fact that the fixture clamping mechanism 502 can be slidably and vertically mounted on the fixture bracket 504 and is driven by the lifting drive mechanism 501. In this embodiment, the fixture clamping mechanism 502 is guided by a slide rail for lifting and sliding, and the lifting drive mechanism 501 is a cylinder, thus ensuring stable and precise movement during the lifting process.

[0075] The working process of the lifting and picking mechanism 5 is as follows: After the secondary positioning mechanism 4 completes the clamping and positioning, the heating part of the lifting and picking mechanism 5 heats the clamping needle 503 until the needle tip is heated enough to melt the adhesive, ensuring that the clamping needle 503 can adhere to the blank. Then, the lifting drive mechanism 501 drives the clamping mechanism 502 to descend into place. At this time, the clamping needle 503 on the clamp 505 will position the blank in the positioning groove. Since the secondary positioning mechanism 4 has ensured the positional accuracy of each blank, all needles and blanks can achieve one-to-one correspondence. After the heated clamping needle 503 contacts the blank and remains in contact for a period of time, the heating mechanism 506 stops heating. After the clamping needle 503 cools down, the adhesive on the surface of the blank solidifies, achieving a reliable connection between the blank and the clamping needle 503. Afterward, the lifting drive mechanism 501 drives the clamping mechanism 502 to raise the clamp 505 to the preset height. In this embodiment, the lifting and picking mechanism 5 is part of the lateral movement module of the grinding and polishing machine, which loads the clamp 505 and the blank on it onto the grinding and polishing machine for subsequent grinding operations.

[0076] This embodiment, by setting up two sets of material feeding and screening mechanisms in conjunction with the single-row suction and transfer mechanism 3, can greatly shorten the waiting interval between "screening" and "feeding". Specifically, when one set of screening mechanisms 2 is picking up material, the other set of screening mechanisms 2 is already screening, greatly improving the feeding capacity per unit time. In addition, even if one of the two sets of material feeding and screening mechanisms needs to stop due to failure or maintenance, the other station can still operate independently. The blank is positioned once by the drilling plate 2011 in the screening mechanism 2, and then positioned again by the secondary positioning mechanism 4 before feeding, which can ensure the consistency of the row of blanks fed and ensure the accuracy of subsequent processing. Material feeding, screening, transfer, positioning and picking are all automated in the system without human intervention, which can effectively reduce labor costs and improve the degree of automation. The material feeding and screening mechanism, the single-row suction and transfer mechanism 3, the secondary positioning mechanism 4 and the lifting and picking mechanism 5 in the system adopt a modular design and are integrated and installed on the same frame, with a compact layout and convenient for quick disassembly and maintenance of individual modules.

[0077] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A single-row feeding system for zircon billets with dual screening stations, characterized in that, include: Two sets of material feeding and screening mechanisms are provided. Each set of material feeding mechanisms includes a material feeding mechanism and a screening mechanism. The material feeding mechanism includes a blank box and a vibrator. The vibrator drives the blank box to vibrate and feed the material. The screening mechanism is located at the discharge end of the corresponding unloading mechanism and receives the blanks supplied by the unloading mechanism. The screening mechanism includes a drilling plate and a first driving mechanism. The drilling plate is provided with one or more rows of inlet countersunk holes that match the zircon blanks. The first driving mechanism drives the drilling plate to oscillate and vibrate, driving the blanks on it to enter the inlet countersunk holes one by one for discharge. The single-row suction and transfer mechanism includes a single-row vacuum suction tube, which is provided with vacuum adsorption holes that correspond one-to-one with the row of inlet countersunk holes on the drilling plate. The single-row vacuum suction mechanism reciprocates between the screening mechanism and the secondary positioning mechanism. The secondary positioning mechanism includes a set of clamping blocks that switch between a clamped state and an open state. There is a positioning groove between the two clamping blocks that corresponds one-to-one with the zircon blanks. The lifting and picking mechanism includes a clamp and a lifting driving mechanism. The clamp is provided with a clamping pin. The lifting driving mechanism drives the clamp to descend to the clamping pin on it to pick up the single row of blanks that have been positioned by the secondary positioning mechanism.

2. The zircon billet double-screening station single-row feeding system according to claim 1, characterized in that, Two sets of material feeding and screening mechanisms alternately and continuously screen and discharge materials.

3. The zircon billet double-screening station single-row feeding system according to claim 1, characterized in that, The screening mechanisms and secondary positioning mechanisms of the two sets of material feeding and screening mechanisms are arranged side by side, all located on the moving path of the single-row suction and transfer mechanism; the secondary positioning mechanism is located directly below the material picking position of the lifting and picking mechanism.

4. The zircon billet double-screening station single-row feeding system according to claim 1, characterized in that, The first driving mechanism includes a swaying mechanism and a vibration mechanism. The vibration mechanism is mounted on the rotating frame and drives the drilling plate to generate a small-amplitude linear reciprocating vibration in the front-to-back direction relative to the rotating frame. The swaying mechanism drives the rotating frame to sway at any angle.

5. A single-row feeding system for a double-screening station of zircon billets according to claim 4, characterized in that, The screening mechanism includes a material box assembly, and a drilling plate is detachably installed on the receiving surface of the material box assembly. After the drilling plate is installed in place, a blank flat area is provided near each row of material inlet holes as a buffer material collection area. Baffles are provided around the material box assembly.

6. The zircon billet double-screening station single-row feeding system according to claim 1, characterized in that, The single-row suction and transport mechanism includes a horizontal drive component, a vertical lifting component, and a vacuum suction component; the vacuum suction component includes a single-row vacuum suction tube, which has vacuum adsorption holes that correspond one-to-one with the row of material inlet holes on the drilling plate, and the single-row vacuum suction tube is connected to a vacuum pumping device; the horizontal drive component drives the single-row vacuum suction tube to move horizontally; the vertical lifting mechanism drives the single-row vacuum suction tube to move vertically.

7. A single-row feeding system for a double-screening station of zircon billets according to claim 6, characterized in that, The horizontal drive assembly includes a power assembly and a slide rail assembly. The slide rail assembly includes a slide rail and a slide seat slidably mounted on the slide rail. The power assembly drives the slide seat to move along the slide rail. The vertical lifting assembly is mounted on the slide seat, and a single row of vacuum suction tubes is vertically and vertically mounted on the vertical lifting assembly.

8. The zircon billet double-screening station single-row feeding system according to claim 1, characterized in that, The secondary positioning mechanism includes a set of clamping blocks that can switch between a clamped state and an open state, and a positioning groove corresponding to the zircon billet is provided between the two clamping blocks.

9. A single-row feeding system for a double-screening station of zircon billets according to claim 8, characterized in that, The secondary positioning mechanism includes a set of clamping blocks, including a first clamping block and a second clamping block, which are arranged parallel to each other. The first clamping block has a positioning groove on the side facing the first clamping block and / or the second clamping block has a positioning groove on the side facing the first clamping block. The driving mechanism drives the first clamping block and the second clamping block to clamp each other or move away from each other.

10. A single-row feeding system for a double-screening station of zircon billets according to claim 9, characterized in that, The first clamping block is relatively fixed and serves as a static reference surface for the clamping action. The second clamping block moves relative to the first clamping block under the drive of the moving cylinder to switch between the opening and clamping states of the secondary positioning mechanism. The positioning groove is set on the side of the second clamping block facing the first clamping block. A moving guide is provided to guide the movement of the second clamping block.

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