Automatic laser coding machine for mold

Abstract

The utility model discloses an automatic laser coding machine for a mold. The automatic laser coding machine comprises a rack, a transmission unit, a feeding unit, a coding unit, a coding surface calibration unit and a grouping coding unit, on one hand, a plurality of molds are loaded at intervals on the basis of the carrier, the probability that code printing faces of the molds are reversed is reduced, meanwhile, the molds are supplied to a conveying channel moving in the X-axis direction in rows in combination with movement in the Y-axis direction and the Z-axis direction, every two adjacent products do not interfere with each other, adsorption force formed by the products is the same, and the transferring and falling probability is low; on the other hand, calibration of the code printing faces of all the molds is completed one by one, the molds are lifted and erected on the annular conveying belt after being overturned by 180 degrees once being overturned, the working condition that the code printing faces are overturned is avoided, it is ensured that products are accurately marked, and the probability that the products which do not meet the requirement flow to the market is reduced; the risk of possible economic or reputation loss is also reduced; in addition, the multiple molds in the same group can be coded synchronously, and the coding efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of machining, specifically relates to a mould automatic laser coding machine. BACKGROUND

[0002] Laser coding is mainly divided into two kinds of scribing type and dot matrix type, and is widely applied to multiple fields, and the permanent identification of production date, batch number, anti-fake, anti-channeling and other information is realized, high photoelectric conversion efficiency, low cost operation, no need to use ink or solvent are adopted, and the cumbersome procedures of daily maintenance are avoided, in addition, the identification is clear and not easy to fall off and the like.

[0003] However, for the cylindrical mould product, the mould needs to be kept in order during the coding operation on the end face, and the conventional feeding is carried out by spiral feeding machine or mechanical hand and the like in a single and continuous manner, but in actual operation, the following technical defects exist:

[0004] 1. When the end face of the mould has positive and negative sides, the spiral feeding machine is obviously not suitable because the positive and negative sides of feeding cannot be effectively controlled, and if the mechanical hand is used for single clamping and the visual camera is assisted, the feeding speed is slow, and it is difficult to avoid missing or judgment error, that is, the feeding cannot meet the coding requirement; at the same time, for the mould with positive and negative sides, there is still a probability that the coding surface is reversed in the actual coding process, so that the coding processing cannot be carried out according to the actual requirement, the identification effect is lost, and a plurality of moulds are mixed together and difficult to be found, so that the product that does not meet the requirement flows to the market, which may cause economic or reputation loss;

[0005] 2. Once a plurality of moulds are mixed together, the clamping feeding of the mechanical hand cannot be carried out, and the clamping may fall off due to poor clamping force, therefore, the efficiency of the assembly line operation is seriously affected, and the production cost is increased;

[0006] 3. The coding is carried out for each product, and the transmission needs to be stopped each time, therefore, the coding efficiency is very low. SUMMARY

[0007] The utility model aims at overcoming the defects of the prior art, and provides an improved mould automatic laser coding machine.

[0008] To achieve the above object, the utility model adopts the following scheme:

[0009] A mould automatic laser coding machine, comprising:

[0010] A rack is composed of a three-dimensional structure along XYZ axes;

[0011] a conveying unit extending along the X axis and comprising a horizontally arranged annular conveying belt and positioning fences formed on the annular conveying belt to form a conveying channel;

[0012] a feeding unit comprising a feeding manipulator located at one side of the conveying channel;

[0013] a code printing unit comprising a laser code printer;

[0014] In particular, the feeding manipulator comprises a truss arranged perpendicularly to the conveying channel, a sliding seat moving along the length direction of the truss, a material taking arm mounted on the sliding seat and capable of ascending and descending, and a plurality of negative pressure suction disc assemblies arranged in a row and spaced apart on the material taking arm, wherein the conveying channel extends along the X axis direction, the truss extends along the Y axis direction, and the material taking arm moves along the Z axis direction; the feeding unit further comprises a replenishment station located at one side of the conveying channel and a carrier for containing molds, wherein a plurality of material placing square grooves are arranged in a rectangular array on the carrier, a plurality of molds are arranged in the material placing square grooves with the code printing surface facing upward, and the carrier is disassembled and assembled in the replenishment station along the X and Y axis directions.

[0015] The mold automatic laser code printing machine further comprises a code printing surface calibration unit and a grouped code printing unit between the feeding unit and the code printing unit, the code printing surface calibration unit comprises a visual detection assembly located at a calibration station, a front intercepting module and a rear intercepting module located at the front and rear ends of the calibration station, and a clamping and overturning assembly located at the calibration station, wherein the clamping and overturning assembly overturns the molds in the calibration station by 180° to change the code printing surface to face upward and sends the molds into the code printing station of the code printing unit based on the release or clamping of the visual detection assembly; the grouped code printing unit takes a plurality of molds as a group, and the laser code printer can synchronously print codes on the plurality of molds in the same group.

[0016] Preferably, the plurality of negative pressure suction disc assemblies are arranged side by side along the X axis direction, and the number of the negative pressure suction disc assemblies and the number of the material placing square grooves arranged along the X axis direction are in an integer multiple relationship. That is, single-row material taking can be performed in batches or once. In some specific embodiments, the number of the negative pressure suction disc assemblies is six, and the number of the material placing square grooves arranged along the X axis direction is also six. That is, the same number of materials are taken, and each time one row is taken, which is convenient for operation.

[0017] According to one specific implementation and preferred aspect of the present application, each negative pressure suction disc assembly can be elastically mounted on the material taking arm. Based on elastic extrusion and adsorption, it is ensured that each cylindrical product is subjected to the same adsorption force, avoiding adsorption interference caused by adjacent two cylindrical products, and also reducing the falling probability of the cylindrical product during transfer.

[0018] According to another specific implementation and preferred aspect of the utility model, the visual detection assembly comprises a visual camera located above the annular transmission, a lamp for light compensation, and an image processor, wherein the image processor can identify information of a coding surface according to photo information captured by the visual camera. The light compensation based on the lamp can obtain end surface information with higher quality and reduce the judgment failure rate.

[0019] Preferably, a rack rod extending upward and downward is arranged on one side of the annular transmission, the visual camera and the lamp are respectively slidably mounted on the rack rod, and the visual camera and the lamp are arranged in a staggered manner in front of and behind each other, so as to avoid imaging interference caused by the two; meanwhile, the up-and-down adjustment can meet the light compensation and photographing needs in actual working conditions, and the information of the end surface photo can be further accurately obtained.

[0020] Further, the lamp is an LED lamp, and can also be other light compensation lamps.

[0021] According to another specific implementation and preferred aspect of the utility model, the clamping and overturning assembly comprises a clamping jaw for clamping a single mold, a surface overturning module for driving the clamping jaw to overturn at a period of 180°, and a lifting module for driving the clamping jaw and the surface overturning module to synchronously lift, wherein under the interaction of the front and rear intercepting modules, each mold passes through the calibration station one by one and is detected by the visual detection assembly to obtain mold top surface information, and based on the top surface information, the clamping and overturning assembly lifts and overturns or releases the mold to keep the coding surface of the mold upward and enter a coding station.

[0022] Preferably, the lifting module and the surface overturning module can synchronously move. Because the mold must be lifted to perform the overturning operation, and synchronous movement of the two can shorten the overturning time and improve the correction efficiency.

[0023] In some specific implementations, the surface overturning module comprises a surface overturning seat and a surface overturning power device, wherein the surface overturning seat rotates around the width direction of the annular transmission belt, the surface overturning power device is used for driving the surface overturning seat to overturn at a period of 180°, and the clamping jaw is mounted on the surface overturning seat.

[0024] The clamping jaw comprises two first clamping arms and two second clamping arms arranged in a symmetrical manner, wherein the first clamping arms form V-shaped or U-shaped jaw walls, when the first clamping arms and the second clamping arms are clamped, the mold is located between the two jaw walls, and the two jaw walls are arranged in a spaced manner; and / or the thickness of the first clamping arms and the second clamping arms is less than the height of the mold, and the first clamping arms and the second clamping arms are clamped at the middle part of the mold.

[0025] In addition, the front intercepting module and the rear intercepting module are identical in structure and are located on opposite sides of the annular conveying belt; and / or, the front intercepting module and the rear intercepting module each comprise a module seat, a sliding module slidingly installed on the module seat, and a blocking rod formed on the sliding module and extending into the annular conveying belt to block the forward movement of the mold. That is, the blocking and releasing are realized through the extension and retraction of the blocking rod.

[0026] Preferably, a plurality of grouping and counting units are further arranged on the annular conveying belt, wherein each of the grouping and counting units is arranged at the front end or the rear end of the counting station and the calibration station, and each of the grouping and counting units comprises a grouping module located on one side of the annular conveying belt and matched with the cylindrical matching groove of the mold, a lining-up module located on the opposite side of the annular conveying belt, and a power device for driving the grouping module or the lining-up module to clamp and arrange multiple molds in a row. Based on the arrangement of the grouping and counting units, multiple molds can be clamped to implement synchronous counting, and the number of molds in each group is kept equal.

[0027] Thanks to the above technical and equipment scheme, the present application has the following advantages compared with the prior art:

[0028] The existing mold coding, first of all, when the end face of the mold has positive and negative, the spiral feeder is obviously not suitable, because the positive and negative of the feeding cannot be effectively controlled, as to if the mechanical hand single clamping and the auxiliary vision camera are adopted, not only the feeding speed is slow, but also the missing or judgment error is inevitable, that is, the feeding cannot meet the coding demand; at the same time, for the mold with positive and negative, in the actual coding process, there is still the probability of coding face reversal, causing the coding processing unable to be carried out according to the actual requirements, not only the self loses the effect of marking, but also the multiple molds are mixed together and difficult to be found, causing the products not meeting the requirements flow to the market, which may bring economic or reputation loss; secondly, once the multiple molds are mixed together, not only the clamping feeding of the mechanical hand cannot be carried out, but also there may be the probability of clamping falling off due to the poor clamping force control, therefore, the efficiency of the assembly line operation is seriously affected, and the production cost is increased; finally, the coding is generally carried out for each product, and the transmission needs to be stopped each time, therefore, the coding efficiency is low and the like, and the automatic laser coding machine for the mold is designed as a whole, the deficiencies and defects of the prior art are skillfully solved, after the automatic laser coding machine is adopted, first of all, the multiple molds are placed with the coding faces upward based on the carrier, and the array distribution directions are along the X and Y axis directions respectively; then, the negative pressure suction disc assembly moves and transfers the multiple molds to the transmission channel along the X axis direction to complete the side-by-side feeding of the molds based on the Y and Z axis movements; secondly, the molds are calibrated one by one based on the front and rear intercepting modules; thirdly, the current end face information is obtained based on the visual detection and compared with the coding face, finally, the molds are directly released or clamped to be lifted and turned over by 180 degrees according to the comparison result, so that the molds enter the coding station with the coding faces upward, and the calibration of the mold coding face is completed; finally, the laser coder can code the multiple molds in the same group synchronously based on the grouping, therefore, on the one hand, the multiple molds are spaced and loaded based on the carrier, the probability of the mold coding face reversal is reduced, and the multiple molds are supplied to the transmission channel moving along the X axis direction based on the Y and Z axis movements, so as to complete the movement feeding of the three-dimensional coordinate system, and the adjacent two products do not interfere with each other, the suction forces of the products are the same, and the probability of transfer falling off is low; on the other hand, the calibration of the coding face of each mold is completed by the way of sorting and detecting one by one, once the reversal occurs, the mold is lifted and turned over by 180 degrees and then placed on the ring-shaped transmission belt, so as to avoid the reversal condition of the coding face, ensure the accuracy of the product marking, reduce the probability of the products not meeting the requirements flowing to the market, and reduce the risk of the possible economic or reputation loss; in addition, the multiple molds in the same group can be coded synchronously, and the coding efficiency is increased. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a structure schematic view of the mold automatic laser coding machine of the embodiment;

[0030] Figure 2 is a front view schematic diagram of the main view; Figure 1

[0031] Figure 3 is a left view schematic diagram of the main view; Figure 2

[0032] Figure 4 is a right view schematic diagram of the main view; Figure 2

[0033] Figure 5 is a top view schematic diagram of the main view; Figure 2

[0034] Figure 6 is a structure enlarged schematic diagram of the upper feeding unit in the main view; Figure 1

[0035] Figure 7 is a structure enlarged schematic diagram of the code printing surface calibration unit in the main view; Figure 1 Wherein: 1, rack;

[0036] 2, transmission unit; 20, ring-shaped transmission belt; 21, positioning fence; 210, horizontal part; 211, vertical part;

[0037] 3, upper feeding unit; 3A, upper feeding manipulator; 30, truss; 31, sliding seat; 32, material taking arm; 33, negative pressure suction disc assembly; 300, sliding rail; 310, lifting rail; 3B, material supplementing station; b1, angle positioning module; 3C, carrier; c1, material placing square groove;

[0038] 4, code printing surface calibration unit; 40, visual detection assembly; 400, visual camera; 401, lamp; 41, front intercepting module; 42, rear intercepting module; 43, clamping and overturning assembly; 430, clamping jaw; j1, first clamping arm; j2, second clamping arm; 431, surface overturning module; a, overturning seat; b, overturning power device; g, clamping rail; 432, lifting module; 44, frame rod;

[0039] 5, code printing unit; 50, laser code printer; 51, frame seat;

[0040] 6, grouping code printing unit; 60, grouping module; 600, cylindrical surface matching groove; 61, alignment module; 62, power device;

[0041] B, mold.

[0042] DETAILED DESCRIPTION

[0043] ​​​​​​In order to make the above objectives, features and advantages of the present application more clear and easily understood, the detailed description of the specific embodiments of the present application will be described below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the scope of the present application, and it is understood that similar improvements can be made by those skilled in the art in light of the foregoing description. Therefore, the present application is not limited to the following disclosed specific embodiments.

[0044] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0045] In addition, the terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one piece of the feature. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0046] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0048] like Figures 1 to 7 As shown, the automatic laser marking machine for molds in this embodiment includes a frame 1, a transmission unit 2, a feeding unit 3, a marking surface calibration unit 4, a marking unit 5, and a group marking unit 6.

[0049] Specifically, the frame 1 forms a three-dimensional structure along the XYZ axes.

[0050] The transmission unit 2 extends along the X-axis and includes a horizontally arranged annular transmission belt 20 and positioning grids 21 formed on the annular transmission belt 20 to form a transmission channel. The annular transmission belt 20 extends along the X-axis direction, and its top surface forms a horizontal transmission surface. The positioning grids 21 extend along the length of the annular transmission belt 20 and are located above it. With the assistance of the grids, the mold is kept moving forward along a set path. In this example, the positioning grids 21 include a horizontal portion 210 mounted on a bearing of the annular transmission belt 20 and a vertical portion 211 extending upward from the horizontal portion 210. The vertical portions 211 of the two positioning grids 11 and the annular transmission belt 20 below them constitute a transmission channel.

[0051] The feeding unit 3 comprises a feeding manipulator 3A located at one side of the conveying channel. The feeding manipulator 3A comprises a truss 30 arranged perpendicularly to the conveying channel, a sliding seat 31 moving along the length direction of the truss 30, a material taking arm 32 installed on the sliding seat 31 and capable of lifting up and down, and a plurality of negative pressure suction disc assemblies 33 arranged in a row and spaced apart on the material taking arm. The conveying channel extends along the X-axis direction, the truss extends along the Y-axis direction, and the material taking arm moves along the Z-axis direction. The feeding unit 3 further comprises a replenishment station 3B located at one side of the conveying channel and a carrier 3C for containing the mold B. The carrier 3C has a plurality of material placing square grooves c1 arranged in a rectangular array. A plurality of molds B are placed in each of the material placing square grooves c1 with the coding surface facing upward. The carrier 3C is arrayed along the X and Y axes and is detachably arranged in the replenishment station 3B. Specifically, the replenishment station 3B is composed of four corner positioning modules b1. The carrier 3C is detachably arranged between the four corner positioning modules b1.

[0052] A sliding rail 300 extending along the Y-axis direction is arranged on the truss 30. The sliding seat 31 is slidingly installed on the sliding rail 300. A telescopic rod or transmission screw rod for driving the linear motion of the sliding seat is further arranged in the truss 30. The Y-axis direction motion in the three-dimensional coordinate system is realized. A lifting rail 310 along the Z-axis direction is arranged on the sliding seat 31. The material taking arm 32 is slidingly installed on the lifting rail 310 at the end. A telescopic rod or transmission screw rod for driving the linear motion of the material taking arm is further arranged in the lifting rail 310. The Z-axis direction motion in the three-dimensional coordinate system is realized. The plurality of negative pressure suction disc assemblies 33 are arranged in a row along the X-axis direction. Each negative pressure suction disc assembly 33 is elastically installed on the material taking arm 32. Based on elastic extrusion and adsorption, it is ensured that each mold is subjected to the same adsorption force, avoiding adsorption interference caused by adjacent two molds, and reducing the probability of falling off during mold transfer.

[0053] In some specific embodiments, the plurality of negative pressure suction disc assemblies 33 are arranged in a row along the X-axis direction. The number of the negative pressure suction disc assemblies 33 and the number of the material placing square grooves c1 arranged along the X-axis direction have an integer multiple relationship. That is, single row material taking can be performed in batches or at one time. In this example, the number of the negative pressure suction disc assemblies 33 is six, and the number of the material placing square grooves c1 arranged along the X-axis direction is also six. That is, the same number of material taking is performed at one time, which is convenient for operation.

[0054] The coding surface calibration unit 4 comprises a visual detection assembly 40 located at the calibration station, a front intercept module 41 and a rear intercept module 42 located at the front and rear ends of the calibration station, and a clamping and overturning assembly 43 located at the calibration station. The clamping and overturning assembly 43 releases or clamps the mold in the calibration station to overturn by 180° to change the coding surface to face upward and then feeds the mold into the coding station of the coding unit.

[0055] In some embodiments, the visual detection assembly 40 comprises a visual camera 400 located above the ring-shaped conveying belt 20, a lamp 401 for light compensation, and an image processor capable of recognizing the information of the coding surface of the mold B according to the photo information taken by the visual camera 400. The light compensation based on the lamp 401 can obtain the end surface information with higher quality and reduce the judgment failure rate. In this example, the lamp 401 is an LED lamp. Meanwhile, a frame rod 44 extending upward and downward is arranged on one side of the ring-shaped conveying belt 20, and the visual camera 400 and the lamp 401 are respectively slidably mounted on the frame rod 44, and the visual camera 400 and the lamp 401 are arranged in a staggered manner. The staggered arrangement of the visual camera and the lamp can avoid imaging interference caused by the two, and the upward and downward adjustment can meet the light compensation and photographing needs in actual working conditions, and further accurately obtain the information of the end surface photo.

[0056] The front intercepting module 41 and the rear intercepting module 42 have the same structure and are located on opposite sides of the ring-shaped conveying belt. Specifically, the front intercepting module 41 and the rear intercepting module 42 each comprise a mold seat m, a sliding mold h slidably mounted on the mold seat m, and a blocking rod d formed on the sliding mold h and extending into the ring-shaped conveying belt to block the forward movement of the mold B. That is, the blocking and release are realized by the extension and retraction of the blocking rod d.

[0057] In some embodiments, the clamping and overturning assembly 43 comprises a clamping jaw 430 for clamping a single mold B, a turning module 431 for driving the clamping jaw 430 to have a turning period of 180°, and a lifting module 432 for driving the clamping jaw 430 and the turning module 431 to synchronously lift and lower. Under the interaction of the front intercepting module 41 and the rear intercepting module 42, each mold B passes through the calibration station one by one and is detected by the visual detection assembly 40 to obtain the top surface information of the mold. Based on the top surface information, the clamping and overturning assembly 43 lifts and overturns or releases the mold to keep the coding surface of the mold B upward and enter the coding station.

[0058] In this example, the lifting module 432 and the turning module 431 can move synchronously. Because the lifting operation must be performed before the overturning operation, the synchronous movement of the two can shorten the time required for turning and improve the correction efficiency. Specifically, the turning module 431 comprises a turning seat a and a turning power device b, wherein the turning seat a rotates around the width direction of the ring-shaped conveying belt, the turning power device b is used to drive the turning seat to turn at a turning period of 180°, and the clamping jaw 430 is mounted on the turning seat a. A clamping rail g is arranged on the turning seat a, and the clamping jaw 430 slides on the clamping rail g to form a moving clamping. The clamping jaw 430 comprises two first clamping arms j1 and a second clamping arm j2 arranged symmetrically, wherein the first clamping arm j1 forms a V-shaped jaw wall. When the first clamping arm j1 and the second clamping arm j2 are clamped, the mold B is located between the two jaw walls, and the two jaw walls are arranged apart to meet the clamping of molds with different outer diameters.

[0059] Further, the thickness of the first and second clamping arms j1 and j2 is less than the height of the mold B, and the clamping arms are clamped to the middle of the mold B. In this way, the turning over can be implemented in a smaller space. The lifting module 432 is a common lifting cylinder, and of course other lifting methods can also be used to replace it, such as a hydraulic cylinder, an electric cylinder, etc.

[0060] The code printing unit 5 includes a laser code printer 50 and an upper and lower extending bracket 51, wherein the laser code printer 50 can move up and down to adjustably slide on the bracket 51.

[0061] The grouping code printing unit 6 groups a plurality of molds B, and the laser code printer can synchronously print codes on the plurality of molds B in the same group. In this example, three molds B form a group.

[0062] Specifically, three grouping code printing units 6 are further arranged on the ring-shaped conveying belt 20, wherein each grouping code printing unit 6 is distributed at the front and back ends of the code printing station and the calibration station, and each grouping code printing unit 6 includes a grouping module 60 located on one side of the ring-shaped conveying belt 20 and matched with the cylindrical surface matching groove 600 of the mold B, a flattening module 61 located on the opposite side of the ring-shaped conveying belt 20, and a power device 62 for driving the grouping module 60 or the flattening module 61 to move to clamp and arrange a plurality of molds B. Based on the arrangement of the grouping code printing unit 6, a plurality of molds can be clamped to implement synchronous code printing, and the number of molds in each group is kept equal.

[0063] In summary, after adopting the automatic laser coding machine, firstly, multiple molds are placed on the carrier based on the coding surface facing upward, and the array distribution direction is along the X and Y axis directions respectively; then, the movement of Y and Z axes is used to adsorb each mold by the negative pressure suction disc assembly side by side and interval, and then transfer to the transmission channel of X axis direction to complete the side by side feeding of the mold; secondly, the mold is calibrated one by one based on the front and rear intercepting module; thirdly, the current end surface information is obtained based on visual detection and compared with the coding surface, and finally, according to the comparison result, the mold is directly released or clamped to lift and overturn by 180 degrees, so that the mold coding surface faces upward into the coding station, and the calibration of the mold coding surface is completed; finally, based on grouping, the laser coder can code multiple molds in the same group synchronously, so that the mold coding surface is calibrated one by one, and once the mold coding surface is reversed, it is lifted and overturned by 180 degrees and then placed on the ring transmission belt, so that the coding surface is prevented from being reversed, the product identification is accurate, the probability of non-conforming products flowing into the market is reduced, and the risk of possible economic or reputation loss is reduced; in addition, multiple molds in the same group can be coded synchronously to increase the coding efficiency; thirdly, multiple negative pressure suction disc assemblies are distributed side by side along the X axis direction, and the number of distribution and the number of placement slots along the X axis direction are in an integer multiple relationship, that is, single row feeding can be performed in batches or once; fourthly, based on elastic extrusion and adsorption, each mold is subjected to the same adsorption force, the adsorption interference caused by adjacent two molds is avoided, and the falling probability of mold transfer is reduced; fifthly, under the assistance of the fence, the mold keeps the set path and moves forward, and the vertical part of the two positioning fences and the lower ring transmission belt form a transmission channel; sixthly, in order to improve the coding efficiency, not one but a group is coded, and based on the relative movement of the alignment module and the grouping module, the row of molds is grouped for concentrated coding; seventhly, the light of the lamp is supplemented to obtain the end surface information with higher quality and reduce the judgment error rate; at the same time, the vision camera and the lamp are staggered to avoid imaging interference caused by the two, and the up and down adjustment meets the needs of light supplementing and photographing in actual working conditions, and the information of the end surface photo is further accurately obtained; eighthly, the lifting assembly and the turning assembly can move synchronously, because the lifting operation must be lifted, and the synchronous movement of the two can shorten the time required for turning and improve the correction efficiency.In the ninth aspect, the two jaw walls are V-shaped and are spaced apart to meet the clamping of molds with different outer diameters, the thickness of the first clamping arm and the second clamping arm is less than the height of the mold, and the first clamping arm and the second clamping arm are clamped at the middle part of the mold, so that the turning-over can be implemented in a smaller space.

[0064] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A mold automatic laser marking machine, comprising: a rack constituting a three-dimensional structure along XYZ axes; a conveying unit extending along the X axis and comprising a horizontally arranged annular conveying belt and positioning fences formed on the annular conveying belt to form a conveying channel; a feeding unit comprising a feeding manipulator located at one side of the conveying channel; a marking unit comprising a laser marker; characterized in that: the feeding manipulator comprises a truss arranged perpendicularly to the conveying channel, a sliding seat moving along the length direction of the truss, a material taking arm mounted on the sliding seat and capable of lifting up and down, and a plurality of negative pressure suction disc assemblies arranged in a row and spaced apart on the material taking arm, wherein the conveying channel extends along the X axis direction, the truss extends along the Y axis direction, and the material taking arm moves along the Z axis direction; the feeding unit further comprises a replenishment station located at one side of the conveying channel and a carrier for containing molds, wherein a plurality of material placing square grooves are arranged in a rectangular array on the carrier, a plurality of molds are arranged in the material placing square grooves with their marking faces upward, and the carrier is arrayed along the X and Y axes and is detachably arranged in the replenishment station; the mold automatic laser marking machine further comprises a marking face calibration unit and a grouping marking unit located between the feeding unit and the marking unit, the marking face calibration unit comprises a visual detection assembly located at a calibration station, a front intercepting module and a rear intercepting module located at the front and rear ends of the calibration station, and a clamping and overturning assembly located at the calibration station, wherein the clamping and overturning assembly releases or clamps the molds in the calibration station based on the visual detection assembly, overturns the molds by 180° to change the marking faces upward, and sends the molds with the marking faces upward into a marking station of the marking unit; the grouping marking unit groups a plurality of the molds as a group, and the laser marker can synchronously mark a plurality of the molds in the same group.

2. The mold automatic laser marking machine according to claim 1, characterized in that: A plurality of the negative pressure suction disc assemblies are arranged side by side along the X axis direction, and the number of the negative pressure suction disc assemblies is an integer multiple of the number of the material placing square grooves arranged along the X axis.

3. The mold automatic laser marking machine of claim 1, wherein: Each of the negative pressure suction disc assemblies is elastically mounted on the material taking arm.

4. The mold automatic laser marking machine of claim 1, wherein: The visual detection assembly comprises a visual camera located above the annular conveying belt, a lamp for supplementary lighting, and an image processor, wherein the image processor can recognize the information of the marking face according to the photo information taken by the visual camera.

5. The mold automatic laser marking machine according to claim 4, characterized in that: A rack rod extending upward and downward is arranged at one side of the annular conveying belt, the visual camera and the lamp are respectively mounted on the rack rod capable of sliding upward and downward, and the visual camera and the lamp are arranged in a staggered manner front and rear; and / or the lamp is an LED lamp.

6. The mold automatic laser marking machine of claim 1, wherein: The clamping and overturning assembly comprises a clamping jaw for clamping a single mold, a face changing module driving the clamping jaw to overturn by 180°, and a lifting module driving the clamping jaw and the face changing module to synchronously lift, wherein each mold passes through the calibration station one by one under the interaction of the front intercepting module and the rear intercepting module, and is detected by the visual detection assembly to obtain the information of the top face of the mold, and the clamping and overturning assembly releases or clamps the mold based on the information of the top face to keep the marking face of the mold upward and enter the marking station.

7. The mold automatic laser marking machine of claim 6, wherein: The lifting module and the turning module can move synchronously.

8. The mold automatic laser marking machine of claim 6, wherein: The turning module comprises a turning seat and a turning power device, wherein the turning seat rotates around the width direction of the annular conveying belt, and the turning power device drives the turning seat to turn at a turning period of 180°. The gripper comprises two symmetrically arranged first and second clamping arms, wherein the first clamping arm forms a V-shaped or U-shaped clamping wall, the mold is located between the two clamping walls when the first and second clamping arms are clamped, and the two clamping walls are spaced apart; and / or the thickness of the first and second clamping arms is less than the height of the mold, and the mold is clamped in the middle part of the mold.

9. The mold automatic laser marking machine of claim 1, wherein: The front and rear interception modules have the same structure and are located on opposite sides of the annular conveying belt; and / or the front and rear interception modules each comprise a mold seat, a sliding mold slidingly installed on the mold seat, and a blocking rod formed on the sliding mold and extending into the annular conveying belt to block the mold from moving forward.

10. The mold automatic laser marking machine of claim 1, wherein: A plurality of grouping and counting units are also provided on the annular conveying belt, wherein each grouping and counting unit is distributed at the front and rear ends of the counting station and the calibration station, and each grouping and counting unit comprises a grouping module located on one side of the annular conveying belt and matched with the cylindrical surface of the mold, a aligning module located on the opposite side of the annular conveying belt, and a power device driving the grouping module or the aligning module to move to clamp multiple molds in a row.

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