A detection device and control method for the external dimensions of a wood floor veneer device

Abstract

The present invention belongs to the technical field of wood floor detection, and relates to a detection device and control method for the external dimensions of a wood floor veneer device. The positioning protrusion pushes the middle position of the left straight edge of the wood floor, and the front and rear ends of the right straight edge of the wood floor are respectively close to the two positioning protrusions, and the wood floor is positioned; the lifting cylinder drives the wood floor to translate upward, the detection cylinder drives the displacement sensor to translate, the detection roller presses on the right straight edge and the left straight edge, the servo motor drives the detection device to translate forward, and the displacement sensor collects and saves data; the data is analyzed to obtain a qualified or unqualified conclusion; classified and handled according to the judgment results; the present invention can automatically detect the straightness and width deviation dimensions of the long straight edge of the wood floor, and is integrated with the wood floor veneer device, with high detection efficiency, reduced turnover links, labor saving, more data collection, and faster storage and calculation, preventing substandard wood floors from entering the market.

Description

Technical Field

[0001] The present invention belongs to the technical field of wood floor detection, and relates to a long straight edge straightness and width deviation detection technology after a wood floor veneer device, and specifically relates to a detection device and a control method for the external dimensions of a wood floor veneer device. Background Art

[0002] The upper surface of the wooden floor is 900 mm long, 90 mm wide and 18 mm thick; of the two long straight edges, the right straight edge is provided with a long groove, and the left straight edge is provided with a long tenon; of the two short straight edges, the rear straight edge is provided with a short groove, and the front straight edge is provided with a short tenon; when laying, the long groove of the wooden floor matches with the long tenon of the adjacent wooden floor, the short groove matches with the short tenon of the adjacent wooden floor, the wooden floor and all adjacent wooden floors are interlocked, and the straight edge of the upper surface and all adjacent straight edges are tightly together, so that the entire wooden floor surface in the room is flat and tight.

[0003] The net width of the surface layer of the wooden floor must meet certain tolerance requirements. The straightness deviation between the right and left straight edges cannot exceed 0.2 mm, and the difference between the maximum and minimum widths of the right and left straight edges cannot exceed 0.2 mm. The width below the surface layer requires a negative deviation to prevent the surface layers from being blocked. Only when the net width of the surface layer of each wooden floor meets these requirements can it be laid flat and tight.

[0004] The working process of the wooden floor veneer device is as follows: glue is applied to both the upper and lower surfaces of the wooden floor substrate, and then the flexible upper veneer and lower veneer materials are bonded to the upper and lower surfaces of the substrate respectively. The bonded wooden floor is placed in a flat press. Under the conditions of heating and pressurization, the glue solidifies, and the excess glue and excess veneer materials are scraped off to obtain the wooden floor. In the production process of wooden floors, conveyors are often used for transportation. The conveyor includes two rollers, two belts, a motor, a frame and a fence. The two rollers are respectively connected to the front and rear ends of the frame through a rotating pair. The two belts are respectively tensioned and wound side by side on the two rollers. The width of the belt is significantly less than half the length of the roller. There is enough space between the two belts for the manipulator, baffle and other operating elements to operate the wooden floor. The fence is set on the left and right sides of the belt. The housing of the motor is fixedly connected to the frame, and the output shaft of the motor is fixedly connected to one of the rollers. The motor drives the working side of the belt, that is, the upper side, to move from back to front. The wooden floor is placed on the upper side of the belt and moves from back to front with the belt. The fence can prevent the wooden floor from deviating to the left and right.

[0005] The base of the wooden floor is made of high-quality walnut wood. The flat press applies pressure and temperature that it can withstand, and the dimensions of most wooden floors can be controlled within the standard range. However, this is not always the case. The material inside the wood is not the same everywhere; some parts are loose in texture and cannot withstand pressure and temperature and deform. The edge of the surface layer of the wooden floor is bent and deformed, such as Figure 1As shown in the figure, the wooden floor has gaps of different widths, which affects the overall appearance of the wooden floor in the room; some wood has hard and brittle wood tumors, which happen to appear on the right straight edge or the left straight edge. When heated and pressurized, the wood floor is partially broken and the material is missing. Therefore, after production, the quality of the wooden floor needs to be inspected, especially to check whether the straightness deviation and width of the long straight edge of the wooden floor are qualified. At present, there is no special testing instrument, and it depends on manual sampling. The testing efficiency is relatively low, the number of tested data is relatively small, and the data recording and calculation are relatively slow. Some substandard products are not detected and flow into the market, causing unnecessary losses to customers. Summary of the invention

[0006] The purpose of the present invention is to provide a device and a control method for detecting the external dimensions of a wooden floor veneer device. The present invention can automatically detect the straightness and width deviation dimensions of the long straight edges of wooden floors, and is integrated with the wooden floor veneer device. The device has high detection efficiency, reduces turnover links, saves labor, collects more data, and saves and calculates faster.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A device for detecting the external dimensions of a wooden floor veneer device, comprising a detection assembly and a frame assembly; the frame assembly comprises a frame and a linear guide rail, and the linear guide rail is fixedly connected to the frame; the detection assembly comprises two detection assemblies, a detection bracket and a slider; the slider is fixedly connected to the detection bracket, and the slider and the linear guide rail form a linear guide pair; the detection assembly comprises a detection cylinder and a displacement sensor; the detection cylinder is a guide rod type cylinder; the housing of the displacement sensor is fixedly connected to the piston rod of the detection cylinder; the displacement sensor comprises a detection roller, a reset spring and a detection rod; the detection roller is connected to the end of the detection rod of the displacement sensor through a rotating pair; the reset spring is sleeved on the detection rod, and the reset spring pushes the detection rod to extend out of the housing of the displacement sensor; the direction in which the piston rod of the detection cylinder extends is the same as the direction in which the connected detection rod extends; one of the piston rods of the two detection cylinders extends to the left, and the other extends to the right, and the directions in which the piston rods of the two detection cylinders extend are horizontally opposite; the detection assembly translates in the front and rear horizontal directions along the linear guide rail;

[0009] The frame assembly also includes a synchronous wheel, a synchronous belt and a servo motor; the synchronous wheel is connected to the frame through a rotating pair; the synchronous belt is tensioned between the front and rear synchronous wheels; the housing of the servo motor is fixedly connected to the frame, and the output shaft of the servo motor is fixedly connected to one of the synchronous wheels; a belt clamp is provided on the detection bracket, and the belt clamp fixes and clamps the synchronous belt; the servo motor drives the detection bracket to translate forward and backward through the synchronous wheel and the synchronous belt.

[0010] The present invention also includes a carrying assembly; the carrying assembly includes a horizontal push cylinder, a lifting cylinder, a carrying bracket, a carrying claw and a carrying finger; the horizontal push cylinder and the lifting cylinder are cylinders with guide rods; the cylinder body of the horizontal push cylinder is fixedly connected to the frame, the piston rod of the horizontal push cylinder is fixedly connected to the cylinder body of the lifting cylinder, the piston rod of the horizontal push cylinder extends to the right, and the piston rod of the lifting cylinder extends downward; the carrying bracket and the piston rod of the lifting cylinder are fixedly connected; the carrying claw includes a claw cylinder body and two claw bodies; the claw cylinder body and the carrying bracket are fixedly connected; the carrying fingers and the claw bodies are fixedly connected; one of the two carrying claws is in the front and the other in the back, and the ends of the two carrying claws with the claw bodies are opposite to each other front and back, and the carrying claws drive a pair of carrying fingers to flip, clamping the front and back ends of the wooden floor located between the two.

[0011] The present invention also includes a main conveyor; the main conveyor includes two main rollers, two main belts, a main motor, a main frame and a main fence; the two main rollers are respectively connected to the front and rear ends of the main frame through a rotating pair, and the two main belts are respectively tensioned and wound side by side on the two main rollers, the width of the main belt is significantly less than half the length of the main roller, and there is enough space between the two main belts for the conveying air claw to pass through the middle to facilitate the operation of the wooden floor. The main fence is arranged on the left and right sides of the main belt. The housing of the main motor is fixedly connected to the main frame, and the output shaft of the main motor is fixedly connected to one of the main rollers. The wooden floor is placed on the two main belts, and the wooden floor moves from back to front with the main belts, and the main fence blocks the left and right sides of the wooden floor to prevent it from deviating to the left or right.

[0012] The present invention also includes a front baffle assembly, which includes a front baffle cylinder and a front baffle plate. The cylinder body of the front baffle cylinder is fixedly connected to the frame, and the piston rod of the front baffle cylinder is fixedly connected to the front baffle plate. The front baffle cylinder drives the front baffle plate to extend upward from between the two main machine belts to block the channel for the wooden floor to move forward.

[0013] Two positioning protrusions are provided on the main engine railing on the right side; the detection part is also provided with a positioning assembly; the positioning assembly includes a positioning cylinder and a positioning protrusion; the cylinder body of the positioning cylinder and the detection bracket are fixedly connected, the piston rod of the positioning cylinder and the positioning protrusion are fixedly connected, and the positioning cylinder drives the positioning protrusion to push the middle position of the left straight edge of the wooden floor.

[0014] The present invention also includes a rear baffle assembly, which includes a rear baffle cylinder and a rear baffle plate, wherein the cylinder body of the rear baffle cylinder is fixedly connected to the frame, and the piston rod of the rear baffle cylinder is fixedly connected to the rear baffle plate; the rear baffle cylinder drives the rear baffle plate to extend upward from the space between the two main machine belts to block the passage for the wooden floor to move forward; the rear baffle assembly is behind the front baffle assembly. Two positioning protrusions, a front baffle plate and a positioning protrusion block position the wooden floor in the horizontal direction through four points.

[0015] The present invention also includes a fixing component; the fixing component includes a parallel clamp and two parallel clamp fingers; the parallel clamp includes a parallel clamp cylinder and two parallel clamp jaw bodies; the parallel clamp cylinder is fixedly connected to a frame; the two parallel clamp jaw bodies are respectively fixedly connected to two parallel clamp fingers, and the parallel clamp drives the two parallel clamp fingers to translate toward each other synchronously to clamp the wooden floor in the middle.

[0016] The present invention also includes an auxiliary conveyor; the auxiliary conveyor includes two auxiliary machine rollers, two auxiliary machine belts, an auxiliary machine motor, an auxiliary machine frame and an auxiliary machine fence; the two auxiliary machine rollers are respectively connected to the front and rear ends of the auxiliary machine frame through a rotating pair, and the two auxiliary machine belts are respectively tensioned and wound side by side on the two auxiliary machine rollers, and the width of the auxiliary machine belt is significantly less than half the length of the auxiliary machine roller. There is enough space between the two auxiliary machine belts for the conveying air claw to pass through the middle, and the wooden floor can be placed. The auxiliary machine fence is arranged on the left and right sides of the auxiliary machine belt. The housing of the auxiliary machine motor is fixedly connected to the auxiliary frame, and the output shaft of the auxiliary machine motor is fixedly connected to one of the auxiliary machine rollers. The wooden floor is placed on the two auxiliary machine belts, and the wooden floor moves from back to front with the auxiliary machine belts, and the auxiliary machine fence blocks the wooden floor to prevent it from deviating to the left or right. The auxiliary conveyor is used to transport unqualified wooden floors.

[0017] The main conveyor also includes an electric roller, which includes an electric roller body and an electric roller flat shaft; the side of the electric roller flat shaft has two mounting planes that are parallel to the axis line and opposite to each other; a vertical slide groove is provided on the main machine guardrail, and the two mounting planes are slidably matched with the vertical slide groove.

[0018] The present invention also includes a standard template, which has the same appearance as an ordinary wooden floor, but its dimensional tolerance is strictly controlled and is made of a steel plate with high strength and not easy to deform, and is used to correct the zero point position of the displacement sensor.

[0019] The present invention also includes a programmable logic controller; the detection cylinder, displacement sensor, positioning cylinder, servo motor, rear stop cylinder, front stop cylinder, push cylinder, lifting cylinder, transport claw, parallel clamp and auxiliary motor are electrically connected to the programmable logic controller respectively.

[0020] The working process of the present invention is like this.

[0021] 1. Start the main motor and the electric roller. During production, the main motor always drives the main belt to run, and when the wooden floor is placed on it, it is transported forward. The electric roller is always rotating, and the rotation direction of the electric roller is that the lower side of the electric roller body, that is, the surface in contact with the wooden floor, rotates forward, which can drive the wooden floor to move forward; under the weight of the electric roller and the driving force of the electric roller and the main belt, the wooden floor can overcome the resistance of the short groove and the short tenon, so that the two wooden floors can be separated.

[0022] 2. The rear baffle cylinder drives the rear baffle to extend upward, and the parallel grippers drive the parallel gripping fingers to release the grip on the first wooden floor. The first wooden floor and the wooden floors behind are conveyed forward by the main machine belt, and the first wooden floor passes under the electric roller; until the front straight edge of the first wooden floor is blocked by the rear baffle, all the wooden floors behind are forced to stop. The first wooden floor is still under the electric roller.

[0023] 3. The parallel grippers drive the parallel fingers to clamp the second wooden floor behind it. The main machine belt runs underneath, and the wooden floor above is stationary and rubs against the upper surface of the main machine belt.

[0024] 4. The front stop cylinder drives the front baffle plate to extend upward to block the path of the wooden floor; the rear stop cylinder drives the rear baffle plate to move horizontally downward to avoid the path of the wooden floor; the first wooden floor is sandwiched between the electric roller and the main machine belt and transported forward. The directions of the wooden floors are consistent. It is inevitable that the short groove of the first wooden floor will be inserted into the short tenon of the second wooden floor next to it during transportation. When the second wooden floor is clamped by the parallel clamping fingers, the friction force of the main machine belt is sometimes not enough to drive the first wooden floor and separate the short grooves and short tenons of the two wooden floors; under the joint action of the electric roller and the main machine belt, the friction force, which is also the driving force, will be greatly increased, which can smoothly separate the first wooden floor from the second wooden floor. The first wooden floor detaches from the second wooden floor, leaves the electric roller, and is then blocked by the front baffle. At this time, a space is generated between the first wooden floor and the second wooden floor, and the electric roller is located in the space between the first wooden floor and the second wooden floor.

[0025] 5. The servo motor drives the detection bracket to translate to a position directly opposite the middle of the positioning protrusion and the left straight edge of the first wooden floor. The positioning cylinder drives the positioning protrusion to push the middle position of the left straight edge of the first wooden floor. The first wooden floor is forced to translate to the right. The front and rear ends of the right straight edge of the first wooden floor are respectively pressed against the two positioning protrusions. The first wooden floor is positioned at four points in the horizontal direction.

[0026] 6. The lifting cylinder drives the combination of the carrying bracket, the carrying air claw and the carrying fingers to move downward, the rear carrying air claw and the carrying finger combination extends down through the space between the electric roller and the rear end of the first wooden floor, and the front carrying air claw and the carrying finger combination extends down from the front side of the front baffle.

[0027] 7. The two transport air claws drive the two pairs of transport fingers to flip and clamp the front and rear ends of the first wooden floor respectively.

[0028] 8. The positioning cylinder drives the positioning protrusion to retract and leave the wooden floor.

[0029] 9. The lifting cylinder drives the combination of the carrying bracket, the carrying air claw, the carrying fingers and the wooden floor to move upward, and the left and right sides of the wooden floor leave the main machine railing respectively, so that there is no obstruction from the main machine railing, and the displacement sensor detects the size of the left and right sides of the wooden floor without hindrance.

[0030] 10. The servo motor drives the detection unit to move backward to a position two or three centimeters away from the rear end of the wooden floor, and the servo motor stops.

[0031] 11. The two detection cylinders drive the two displacement sensors to move toward each other respectively. The two detection cylinders are fully extended, and the two detection rollers are pressed on the right straight edge and the left straight edge respectively under the elastic force of the two reset springs.

[0032] 12. The two displacement sensors start collecting data, but there is no need to save it.

[0033] 13. The servo motor drives the detection unit to continue to move backward. The two detection rollers respectively contact the vertices of the rear ends of the right straight edge and the left straight edge. The collected values ​​increase rapidly. When the data collected by the two displacement sensors exceeds 0.3 mm, the servo motor stops and the displacement sensor stops collecting data. The data collected by the displacement sensor is the deviation value relative to the standard position.

[0034] 14. The servo motor drives the detection unit to move forward, and the displacement sensor starts to collect and save data again. The data y collected by the displacement sensor corresponds to the distance x that the detection roller has rolled. When the servo motor stops, x is 0 mm, and the corresponding y = 0.3 mm.

[0035] The corresponding relationship between the distance x that the detection roller has rolled and the driving angle A of the servo motor is: x = πDA / 360°

[0036] Where: D is the pitch circle diameter of the synchronous wheel, in millimeters;

[0037] A—driving angle of the servo motor, in degrees;

[0038] x—The distance the detection wheel has rolled, in millimeters.

[0039] 15. When the data collected by the two displacement sensors both exceed 0.3 mm again, the servo motor stops rotating and the displacement sensors stop collecting data; the two detection rollers respectively abut against the vertices at the front ends of the right straight edge and the left straight edge.

[0040] 16. The two detection cylinders respectively drive the two displacement sensors to translate away from each other. The two detection cylinders fully contract, and the two detection rollers respectively move away from the right straight edge and the left straight edge, and the detection ends.

[0041] 17. Analyze the data to obtain a conclusion of qualified or unqualified.

[0042] In the y - x curve graph of the right straight edge, when x = x1 and x = x2, obvious inflection points appear. Before data analysis, first discard the parts where x < x1 and x > x2, and retain the part between the interval [x1, x2];

[0043] In the y - x curve graph of the left straight edge, when x = x3 and x = x4, obvious inflection points appear. Before data analysis, first discard the parts where x < x3 and x > x4, and retain the part between the interval [x3, x4];

[0044] a. Calculate the difference between the abscissas of the two inflection points of the measurement data of the right straight edge, that is, x2 - x1, and judge whether it is equivalent to the length B = 900 mm of the right straight edge. If B - (x2 - x1) does not exceed 2 mm, it is considered that the length of the long straight edge of the wooden floor meets the expected condition and is counted as qualified; if this value exceeds 2 mm, it is considered that there is a phenomenon of material shortage at least at one end of the right straight edge, or the chamfer made is too large and the length of the right straight edge is insufficient, and it is counted as unqualified;

[0045] Similarly, it is also necessary to judge the difference between the abscissas of the two inflection points of the measurement data of the left straight edge, that is, x4 - x3, and judge whether it is equivalent to the length B = 900 mm of the left straight edge. If B - (x4 - x2) does not exceed 2 mm, it is considered that the length of the long straight edge of the wooden floor meets the expected condition and is counted as qualified; if this value exceeds 2 mm, it is considered that the left straight edge is unqualified;

[0046] b. For the wooden floor determined to be qualified in condition a, if the difference between the maximum value and the minimum value of the data collected by the right displacement sensor exceeds 0.2 mm, it is determined that the straightness of the right straight edge does not meet the requirements and the wooden floor is unqualified;

[0047] c. For the wooden floor determined to be qualified in condition b, if the difference between the maximum value and the minimum value of the data collected by the left displacement sensor exceeds 0.2 mm, it is determined that the straightness of the left straight edge does not meet the requirements and the wooden floor is unqualified;

[0048] d. For wooden floors that are judged to be qualified in condition c, the sum of the data yL collected by the left displacement sensor and the data yR collected by the right displacement sensor corresponding to the same distance x is recorded as the sum of deviations yA=yL+yR. The maximum and minimum values ​​of the sum of all calculated deviations yA are calculated. If the difference between the maximum and minimum values ​​exceeds 0.2 mm, that is, the difference between the maximum and minimum values ​​of the width between the right straight edge and the left straight edge exceeds 0.2 mm, the wooden floor is unqualified.

[0049] If it is not judged as unqualified by any of the above conditions, the wooden floor is qualified.

[0050] 18. Classify and dispose according to the evaluation results in step 17;

[0051] If the wooden floor is qualified, the lifting cylinder drives the combination of the carrying bracket, the carrying claw, the carrying fingers and the wooden floor to move downward, and the two carrying claws drive the two pairs of carrying fingers to flip in the opposite direction, respectively releasing the front and rear ends of the first wooden floor, and the wooden floor is put back on the main machine belt; the lifting cylinder drives the combination of the carrying bracket, the carrying claw and the carrying fingers to move upward, and the carrying claw leaves the main machine belt; the front baffle cylinder drives the front baffle to retract downward and leave the walking path of the wooden floor; the wooden floor moves forward with the main machine belt; one detection process ends; re-execute step 2;

[0052] If the wooden floor is unqualified, the push cylinder drives the combination of the lifting cylinder, the transport bracket, the transport claw, the transport fingers and the wooden floor to move horizontally to the right, so that the wooden floor is moved horizontally to just above the rear end of the auxiliary conveyor; the lifting cylinder drives the combination of the transport bracket, the transport claw, the transport fingers and the wooden floor to move horizontally downward, and the two transport claws drive the two pairs of transport fingers to flip in the opposite direction, respectively releasing the front and rear ends of the first wooden floor, and the wooden floor is placed on the auxiliary machine belt; the lifting cylinder drives the combination of the transport bracket, the transport claw and the transport fingers to move horizontally upward, and the transport claw leaves the auxiliary machine belt; the push cylinder drives the combination of the lifting cylinder, the transport bracket, the transport claw and the transport fingers to move horizontally to the left, and the combination of the transport claw and the transport fingers returns to the top of the main machine belt; the auxiliary machine motor starts, and the unqualified wooden floor moves with the auxiliary machine belt away from the placement position, and then the auxiliary machine motor stops; one detection process ends; re-execute step 2.

[0053] Before doing the above inspection work, it is often necessary to use the manual control mode to calibrate the size. Refer to step 4, put the standard template instead of the wooden floor on the main machine belt, the standard template is blocked by the front baffle, and then execute steps 5 to 9, 11, and 12, so that the two inspection rollers are respectively in contact with the middle of the right straight edge and the left straight edge. The handling component clamps, fixes, and lifts the wooden floor. The two displacement sensors collect data and set the data values ​​collected at this time to 0 mm, which is the standard value. Then the values ​​collected in the actual inspection work are the deviations relative to the standard values. Based on this, the values ​​collected when the detection rod continues to extend are positive numbers, and the values ​​collected when the detection rod retracts are negative numbers.

[0054] By repeating the above steps 2 to 18, the wooden floors continuously delivered from the wooden floor veneer device can be inspected one by one, judged whether they are qualified and classified for disposal.

[0055] A method for controlling the external dimensions of a wooden floor veneer device comprises the following steps:

[0056] S1. The rear baffle cylinder drives the rear baffle to extend upward;

[0057] S2. The parallel clamping jaw drives the parallel clamping finger to release the clamping of the first wooden floor;

[0058] S3. The parallel gripper drives the parallel gripper fingers to grip the second wooden floor behind it;

[0059] S4. The front baffle cylinder drives the front baffle to extend upward;

[0060] S5. The rear baffle cylinder drives the rear baffle to move downward;

[0061] S6. The servo motor drives the detection bracket to move horizontally to the middle position where the positioning protrusion is aligned with the left straight edge of the first wooden floor;

[0062] S7. The positioning cylinder drives the positioning protrusion to push the middle position of the left straight edge of the first wooden floor;

[0063] S8. The lifting cylinder drives the transporting air claw and the transporting fingers to move horizontally downward;

[0064] S9. The two transport air claws drive the two pairs of transport fingers to flip and clamp the front and rear ends of the first wooden floor respectively;

[0065] S10. The positioning cylinder drives the positioning protrusion to retract;

[0066] S11. The lifting cylinder drives the wooden floor to move upward;

[0067] S12. The servo motor drives the detection unit to move backward to a position two to three centimeters away from the rear end of the wooden floor;

[0068] S13. Servo motor stops;

[0069] S14. The two detection cylinders drive the two displacement sensors to move toward each other;

[0070] S15. The two displacement sensors start collecting data;

[0071] S16. The servo motor drives the detection unit to move backward;

[0072] S17. When the data collected by the two displacement sensors exceeds 0.3 mm, the servo motor stops and the displacement sensors stop collecting data;

[0073] S18. The servo motor drives the detection unit to move forward, and the displacement sensor starts to collect and save data;

[0074] S19. When the data collected by the two displacement sensors exceeds 0.3 mm, the servo motor stops and the displacement sensors stop collecting data;

[0075] S20. The two detection cylinders drive the two displacement sensors to move in opposite directions respectively;

[0076] S21. Analyze the data and determine whether the wood floor is qualified or unqualified;

[0077] S22. If the wooden floor is qualified, the procedure of placing it on the main conveyor is executed; step S1 is executed;

[0078] S23. If the wooden floor is unqualified, the procedure of placing it on the secondary conveyor is executed; step S1 is executed;

[0079] S24. The main program ends.

[0080] When an error is encountered, jump to step S24.

[0081] The procedure for placement onto the main conveyor includes the following steps:

[0082] S101. The lifting cylinder drives the combination of the transport bracket, the transport claw, the transport finger and the wooden floor to move downward;

[0083] S102. The two transport air claws drive the two pairs of transport fingers to flip in the opposite direction, respectively releasing the clamping of the first wooden floor;

[0084] S103. The lifting cylinder drives the combination of the transport bracket, the transport claw and the transport finger to move upward;

[0085] S104. The front baffle cylinder drives the front baffle to retract downward;

[0086] S105. The subroutine ends.

[0087] The procedure for placing onto the secondary conveyor comprises the following steps:

[0088] S201. The push cylinder drives the lifting cylinder, the transport bracket, the transport claw, the transport finger and the wooden floor to move horizontally to the right;

[0089] S202. The lifting cylinder drives the transport bracket, the transport claw, the transport finger and the combination of the wooden floor to move downward;

[0090] S203. The two transporting air claws drive the two pairs of transporting fingers to flip in the opposite direction, respectively releasing the clamping of the first wooden floor;

[0091] S204. The lifting cylinder drives the combination of the transport bracket, the transport claw and the transport finger to move upward;

[0092] S205. The push cylinder drives the lifting cylinder, the transport bracket, the transport claw and the transport finger combination to move horizontally to the left;

[0093] S206. Auxiliary motor starts;

[0094] S207. The auxiliary motor stops;

[0095] S208. The subroutine ends.

[0096] The beneficial effects of the present invention are: it can automatically detect the straightness and width deviation dimensions of the long straight edges of the wooden floor, and is integrated with the wooden floor veneer device, has high detection efficiency, reduces turnover links, saves labor, collects more data, and is relatively fast in storage and calculation, thus preventing substandard wooden floors from entering the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0097] Figure 1 It is a schematic diagram of the three-dimensional structure of the wooden floor;

[0098] Figure 2 is a schematic diagram of the three-dimensional structure of Example 1 of the present invention;

[0099] Figure 3 It is a three-dimensional structural diagram of the main conveyor;

[0100] Figure 4 It is a three-dimensional structural schematic diagram of the electric roller;

[0101] Figure 5 It is a three-dimensional structural diagram of the detection unit;

[0102] Figure 6 It is a schematic diagram of the three-dimensional structure of the detection component;

[0103] Figure 7 It is a schematic diagram of the three-dimensional structure of the positioning component;

[0104] Figure 8 It is a three-dimensional structural schematic diagram of the rack assembly;

[0105] Fig. 9 It is a three-dimensional structural schematic diagram of the handling component;

[0106] Fig.10 It is a three-dimensional structural schematic diagram of the rear block assembly;

[0107] Fig.11 3. It is a schematic diagram of the three-dimensional structure of the front block assembly;

[0108] Fig.12 It is a three-dimensional structural schematic diagram of the fixed component;

[0109] Fig.13 It is a three-dimensional structural diagram of the auxiliary conveyor;

[0110] Fig.14 1 is a schematic diagram of control relationships of a control system according to Embodiment 1 of the present invention;

[0111] Fig.15 It is a curve graph of the right straight edge bending change;

[0112] Fig.16 It is the curve graph of the left straight edge bending change.

[0113] In the figure: 1. Main conveyor; 11. Main machine roller; 12. Main machine belt; 13. Main machine motor; 14. Main machine frame; 15. Main machine fence; 151. Positioning boss; 152. Vertical slide; 16. Electric roller; 161. Electric roller body; 162. Electric roller flat shaft; 2. Detection assembly; 21. Detection component; 211. Detection cylinder; 212. Displacement sensor; 2121. Detection roller; 2122. Reset spring; 2123. Detection rod; 22. Positioning component; 221. Positioning cylinder; 222. Positioning boss; 23. Detection bracket; 24. Slider; 25. Belt clamp; 3. Frame assembly; 31. Linear guide; 32. Synchronous wheel; 33. Synchronous belt; 34. Servo motor; 35. Frame; 4. Handling Components; 41. Push cylinder; 42. Lifting cylinder; 43. Transport bracket; 44. Transport claw; 441. Claw cylinder; 442. Claw body; 45. Transport finger; 5. Rear block component; 51. Rear block cylinder; 52. Rear baffle; 6. Front block component; 61. Front block cylinder; 62. Front baffle; 7. Fixing component; 71. Parallel gripper; 711. Parallel gripper cylinder; 712. Parallel gripper body; 72. Parallel gripper; 8. Auxiliary conveyor; 81. Auxiliary machine roller; 82. Auxiliary machine belt; 83. Auxiliary machine motor; 84. Auxiliary machine frame; 85. Auxiliary machine railing; 9. Wooden floor; 91. Right straight edge; 92. Left straight edge; 93. Long groove; 94. Long tenon; 95. Rear straight edge; 96. Front straight edge; 97. Short groove; 98. Short tenon. DETAILED DESCRIPTION

[0114] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0115] Example 1, please refer to Figure 1-Figure 16 A device for detecting the external dimensions of a wooden floor veneer device, comprising a detection assembly 2 and a frame assembly 3; the frame assembly 3 comprises a frame 35 and a linear guide 31, and the linear guide 31 and the frame 35 are fixedly connected; the detection assembly 2 comprises two detection assemblies 21, a detection bracket 23 and a slider 24; the slider 24 and the detection bracket 23 are fixedly connected, and the slider 24 and the linear guide 31 form a linear guide pair; the detection assembly 21 comprises a detection cylinder 211 and a displacement sensor 212; the detection cylinder 211 is a cylinder with a guide rod; the housing of the displacement sensor 212 is fixedly connected to the piston rod of the detection cylinder 211; the displacement sensor 212 includes The detection roller 2121, the return spring 2122 and the detection rod 2123 are included; the detection roller 2121 is connected to the end of the detection rod 2123 of the displacement sensor 212 through a rotating pair; the return spring 2122 is sleeved on the detection rod 2123, and the return spring 2122 pushes the detection rod 2123 to extend out of the housing of the displacement sensor 212; the direction in which the piston rod of the detection cylinder 211 extends is the same as the direction in which the detection rod 2123 extends; one of the piston rods of the two detection cylinders 211 extends to the left, and the other extends to the right, and the directions in which the piston rods of the two detection cylinders 211 extend are horizontally opposite; the detection part 2 moves horizontally in the front and rear directions along the linear guide rail 31;

[0116] like Figure 2 and Figure 8 As shown, the frame assembly 3 also includes a synchronous wheel 32, a synchronous belt 33 and a servo motor 34; the synchronous wheel 32 is connected to the frame 35 through a rotating pair; the synchronous belt 33 is tensioned between the front and rear synchronous wheels 32; the housing of the servo motor 34 is fixedly connected to the frame 35, and the output shaft of the servo motor 34 is fixedly connected to one of the synchronous wheels 32; a belt clamp 25 is provided on the detection bracket 23, and the belt clamp 25 fixes and clamps the synchronous belt 33; the servo motor 34 drives the detection bracket 23 to translate forward and backward through the synchronous wheel 32 and the synchronous belt 33.

[0117] like Figure 2 and Fig. 9As shown, this embodiment also includes a transport assembly 4; the transport assembly 4 includes a horizontal push cylinder 41, a lifting cylinder 42, a transport bracket 43, a transport claw 44 and a transport finger 45; the horizontal push cylinder 41 and the lifting cylinder 42 are cylinders with guide rods; the cylinder body of the horizontal push cylinder 41 is fixedly connected to the frame 35, the piston rod of the horizontal push cylinder 41 is fixedly connected to the cylinder body of the lifting cylinder 42, the piston rod of the horizontal push cylinder 41 extends to the right, and the piston rod of the lifting cylinder 42 extends downward; the movable bracket 43 and the lifting cylinder 42 The plug rod is fixedly connected; the transport air claw 44 refers to the HFR32 pneumatic finger produced by AirTac International Group, including an air claw cylinder 441 and two air claw claw bodies 442; the air claw cylinder 441 and the transport bracket 43 are fixedly connected; the transport finger 45 and the air claw claw body 442 are fixedly connected; the two transport air claws 44 are one in the front and the other in the back, and the ends of the two transport air claws 44 with the air claw claw bodies 442 are front and back facing each other, and the transport air claws 44 drive a pair of transport fingers 45 to flip, clamping the front and back ends of the wooden floor 9 located between the two.

[0118] like Figure 2 and Figure 3 As shown, this embodiment also includes a main conveyor 1; the main conveyor 1 includes two main rollers 11, two main belts 12, a main motor 13, a main frame 14 and a main fence 15; the two main rollers 11 are respectively connected to the front and rear ends of the main frame 14 through a rotating pair, and the two main belts 12 are respectively tensioned and wound side by side on the two main rollers 11, the width of the main belt 12 is obviously less than half the length of the main roller 11, and there is enough space between the two main belts 12 for the conveying air claw 44 to pass through the middle to facilitate the operation of the wooden floor 9. The main fence 15 is arranged on the left and right sides of the main belt 12. The housing of the main motor 13 is fixedly connected to the main frame 14, and the output shaft of the main motor 13 is fixedly connected to one of the main rollers 11. The wooden floor 9 is placed on the two main belts 12, and the wooden floor 9 moves from back to front with the main belts 12. The main fence 15 blocks the left and right sides of the wooden floor 9 to prevent it from deviating to the left or right. The main conveyor 1 is the original conveyor of the wood floor production equipment. This embodiment utilizes the main conveyor 1 and adds some necessary technical features thereto.

[0119] like Figure 2 and Fig.11 As shown, this embodiment also includes a front baffle assembly 6, which includes a front baffle cylinder 61 and a front baffle plate 62. The cylinder body of the front baffle cylinder 61 is fixedly connected to the frame 35, and the piston rod of the front baffle cylinder 61 is fixedly connected to the front baffle plate 62; the front baffle cylinder 61 drives the front baffle plate 62 to extend upward from between the two main belts 12 to block the passage for the wooden floor 9 to move forward.

[0120] like Figure 2 , Figure 3 and Figure 5 As shown, two positioning protrusions 151 are provided on the main host fence 15 on the right side; a positioning assembly 22 is also provided on the detection unit 2; the positioning assembly 22 includes a positioning cylinder 221 and a positioning protrusion 222; the cylinder body of the positioning cylinder 221 and the detection bracket 23 are fixedly connected, the piston rod of the positioning cylinder 221 and the positioning protrusion 222 are fixedly connected, and the positioning cylinder 221 drives the positioning protrusion 222 to push the middle position of the left straight edge 92 of the wooden floor 9.

[0121] like Figure 2 and Fig.10 As shown, this embodiment also includes a rear baffle assembly 5, which includes a rear baffle cylinder 51 and a rear baffle plate 52. The cylinder body of the rear baffle cylinder 51 is fixedly connected to the frame 35, and the piston rod of the rear baffle cylinder 51 is fixedly connected to the rear baffle plate 52. The rear baffle cylinder 51 drives the rear baffle plate 52 to extend upward from the space between the two main machine belts 12 to block the passage for the wooden floor 9 to move forward. The rear baffle assembly 5 is behind the front baffle assembly 6. Two positioning protrusions 151, a front baffle plate 62 and a positioning protrusion 222, four points can position the wooden floor 9 in the horizontal direction.

[0122] like Figure 2 and Fig.14 As shown, this embodiment also includes a fixing component 7; the fixing component 7 includes a parallel clamp 71 and two parallel clamping fingers 72; the parallel clamp 71 refers to the MHL2-32D wide parallel opening and closing air clamp produced by SMC International Group, including a parallel clamp cylinder 711 and two parallel clamp claw bodies 712; the parallel clamp cylinder 711 is fixedly connected to the frame 35; the two parallel clamp claw bodies 712 are respectively fixedly connected to the two parallel clamping fingers 72, and the parallel clamp 71 drives the two parallel clamping fingers 72 to translate toward each other synchronously to clamp the wooden floor 9 located in the middle.

[0123] like Figure 2 and Fig.13As shown, this embodiment also includes an auxiliary conveyor 8; the auxiliary conveyor 8 includes two auxiliary rollers 81, two auxiliary belts 82, an auxiliary motor 83, an auxiliary frame 84 and an auxiliary fence 85; the two auxiliary rollers 81 are respectively connected to the front and rear ends of the auxiliary frame 84 through a rotating pair, and the two auxiliary belts 82 are respectively tensioned and wound side by side on the two auxiliary rollers 81. The width of the auxiliary belt 82 is significantly less than half the length of the auxiliary roller 81. There is enough space between the two auxiliary belts 82 for the conveying air claw 44 to pass through the middle and place the wooden floor 9. The auxiliary fence 85 is arranged on the left and right sides of the auxiliary belt 82. The housing of the auxiliary motor 83 is fixedly connected to the auxiliary frame 84, and the output shaft of the auxiliary motor 83 is fixedly connected to one of the auxiliary rollers 81. The wooden floor 9 is placed on the two auxiliary belts 82, and the wooden floor 9 moves from the back to the front along with the auxiliary belts 82. The auxiliary fence 85 blocks the wooden floor 9 to prevent it from deviating to the left or right. The auxiliary conveyor 8 is used to transport unqualified wooden floors 9.

[0124] like Figures 2 to 14 As shown, the main conveyor 1 also includes an electric roller 16, and the electric roller 16 includes an electric roller body 161 and an electric roller flat shaft 162; the side of the electric roller flat shaft 162 has two mounting planes 163 that are parallel to the axis line and opposite to each other; the main machine fence 15 is provided with a vertical slide groove 152, and the two mounting planes 163 are slidably matched with the vertical slide groove 152.

[0125] This embodiment also includes a standard template, which has the same appearance as the ordinary wooden floor 9, but its dimensional tolerance is controlled more strictly, and is used to calibrate the zero point position of the displacement sensor 212.

[0126] like Fig.14 As shown, this embodiment also includes a programmable logic controller; the detection cylinder 211, the displacement sensor 212, the positioning cylinder 221, the servo motor 34, the rear stop cylinder 51, the front stop cylinder 61, the push cylinder 41, the lifting cylinder 42, the transport claw 44, the parallel clamp 71 and the auxiliary motor 83 are respectively electrically connected to the programmable logic controller.

[0127] The working process of this embodiment is as follows.

[0128] 1. Start the main motor 13 and the electric roller 16. During production, the main motor 13 always drives the main belt 12 to operate, and when the wooden floor 9 is placed on it, it is transported forward. The electric roller 16 is always rotating, and the rotation direction of the electric roller 16 is that the lower side of the electric roller body 161, that is, the surface in contact with the wooden floor 9, rotates forward, which can drive the wooden floor 9 to move forward; when there is no wooden floor 9 below, the flat shaft 162 of the electric roller is supported by the bottom end of the vertical slide 152, and does not contact the main belt 12. The gap in the middle is two or three millimeters smaller than the thickness of the wooden floor 9. When the wooden floor 9 passes from below, the electric roller 16 is lifted upward, and the electric roller body 161 presses the wooden floor 9 by gravity and rolls on the upper surface of the wooden floor 9. Under the heavy pressure of the electric roller 16 and the common driving force of the electric roller 16 and the main belt 12, the wooden floor 9 can overcome the resistance of the short groove 97 and the short tenon 98, so that the two wooden floors 9 are separated.

[0129] 2. The rear baffle cylinder 51 drives the rear baffle plate 52 to extend upward, and the parallel clamping claws 71 drive the parallel clamping fingers 72 to release the clamping of the first wooden floor 9. The first wooden floor 9 and the wooden floors 9 behind are conveyed forward by the main machine belt 12, and the first wooden floor 9 passes under the electric roller 16; until the front straight edge 96 of the first wooden floor 9 is blocked by the rear baffle plate 52, all the wooden floors 9 behind are forced to stop. The first wooden floor 9 is still under the electric roller 16.

[0130] 3. The parallel clamping claws 71 drive the parallel clamping fingers 72 to clamp the second wooden floor 9 behind it. The main machine belt 12 runs underneath, and the wooden floor 9 above is stationary and rubs against the upper surface of the main machine belt 12.

[0131] 4. The front stop cylinder 61 drives the front stop plate 62 to extend upwards to block the path of the wooden floor 9; the rear stop cylinder 51 drives the rear stop plate 52 to move downwards to avoid the path of the wooden floor 9; the first wooden floor 9 is sandwiched between the electric roller 16 and the main machine belt 12 and transported forward. The directions of the wooden floors 9 are consistent. It is inevitable that the short groove 97 of the first wooden floor 9 will be inserted into the short tenon 98 of the second wooden floor 9 next to it during transportation. When the second wooden floor 9 is clamped by the parallel clamping fingers 72, the friction force of the main machine belt 12 is sometimes not enough to drive the first wooden floor 9, and is not enough to separate the short groove 97 and short tenon 98 of the two wooden floors 9; under the joint action of the electric roller 16 and the main machine belt 12, the friction force, which is also the driving force, will be greatly increased, so that the first wooden floor 9 can be separated from the second wooden floor 9 smoothly. The first wooden floor 9 is separated from the second wooden floor 9, the electric roller 16, and then blocked by the front stop plate 62. At this time, a space is generated between the first wooden floor 9 and the second wooden floor 9 , and the electric roller 16 is located in the space between the first wooden floor 9 and the second wooden floor 9 .

[0132] 5. The servo motor 34 drives the detection bracket 23 to translate to a position opposite to the middle position of the positioning protrusion 222 and the left straight edge 92 of the first wooden floor 9. The positioning cylinder 221 drives the positioning protrusion 222 to push the middle position of the left straight edge 92 of the first wooden floor 9. The first wooden floor 9 is forced to translate to the right. The front and rear ends of the right straight edge 91 of the first wooden floor 9 are respectively pressed against the two positioning protrusions 151. The first wooden floor 9 is positioned at four points in the horizontal direction.

[0133] 6. The lifting cylinder 42 drives the combination of the transport bracket 43, the transport claw 44 and the transport finger 45 to move horizontally downward, and the combination of the transport claw 44 and the transport finger 45 at the rear extends downward through the space between the electric roller 16 and the rear end of the first wooden floor 9, and the combination of the transport claw 44 and the transport finger 45 at the front extends downward from the front side of the front baffle 62. Figure 3 As shown, the fingertips of the transport finger 45 are divided into two parts, the left and the right, and the space in the middle can avoid the front baffle 62 and does not interfere with the front baffle 62 during clamping.

[0134] 7. The two transport air claws 44 drive the two pairs of transport fingers 45 to flip over and clamp the front and rear ends of the first wooden floor 9 respectively.

[0135] 8. The positioning cylinder 221 drives the positioning protrusion 222 to retract and leave the wooden floor 9.

[0136] 9. The lifting cylinder 42 drives the combination of the transport bracket 43, the transport claw 44, the transport fingers 45 and the wooden floor 9 to move upward, and the left and right sides of the wooden floor 9 leave the main machine railing 15 respectively, so that there is no obstruction from the main machine railing 15, and the displacement sensor 212 detects the size of the left and right sides of the wooden floor 9 without hindrance.

[0137] 10. The servo motor 34 drives the detection device 2 to move backward to a position two or three centimeters away from the rear end of the wooden floor 9, and the servo motor 34 stops.

[0138] 11. The two detection cylinders 211 respectively drive the two displacement sensors 212 to translate toward each other. The two detection cylinders 211 are fully extended, and the two detection rollers 2121 are respectively pressed on the right straight edge 91 and the left straight edge 92 under the elastic force of the two reset springs 2122. Here, only the part above the long groove 93 of the right straight edge 91 and the part above the long tenon 94 of the left straight edge 92 are pressed. This part faces upward after installation, which determines the final effect after installation. The part below will be intentionally made into a negative deviation.

[0139] 12. The two displacement sensors 212 start collecting data, but do not need to save it.

[0140] 13. The servo motor 34 drives the detection unit assembly 2 to continue translating backward. The two detection rollers 2121 respectively abut against the vertices at the rear ends of the right straight edge 91 and the left straight edge 92. When continuing to translate, the collected values increase rapidly. When the data collected by the two displacement sensors 212 both exceed 0.3 mm, the servo motor 34 stops and the displacement sensors 212 stop collecting data. The data collected by the displacement sensors 212 is the deviation value relative to the standard position.

[0141] 14. The servo motor 34 drives the detection unit assembly 2 to translate forward. The displacement sensors 212 start collecting data again and save it. The data y collected by the displacement sensors 212 corresponds one-to-one with the distance x that the detection rollers 2121 have rolled over. When the servo motor stops, x is counted as 0 mm, and the corresponding y = 0.3 mm; as Fig.15 shown, it is the bending change curve graph of the right straight edge 91, which is the curve graph of the data y of the right straight edge 91 collected by the right displacement sensor 212 changing with the distance x that the detection roller 2121 has rolled over; as Fig.16 shown, it is the bending change curve graph of the left straight edge 92, which is the curve graph of the data y of the left straight edge 92 collected by the left displacement sensor 212 changing with the distance x that the detection roller 2121 has rolled over;

[0142] The corresponding relationship between the distance x that the detection roller 2121 has rolled over and the driving rotation angle A of the servo motor 34 is: x = πDA / 360°

[0143] In the formula: D—the pitch diameter of the synchronous pulley 32, the unit is mm;

[0144] A—the driving rotation angle of the servo motor 34, the unit is degree °;

[0145] x—the distance that the detection roller 2121 has rolled over, the unit is mm.

[0146] 15. When the data collected by the two displacement sensors 212 both exceed 0.3 mm again, the servo motor 34 stops rotating and the displacement sensors 212 stop collecting data; the two detection rollers 2121 respectively abut against the vertices at the front ends of the right straight edge 91 and the left straight edge 92.

[0147] 16. The two detection cylinders 211 respectively drive the two displacement sensors 212 to translate away from each other. The two detection cylinders 211 are fully retracted, and the two detection rollers 2121 respectively move away from the right straight edge 91 and the left straight edge 92, and the detection ends.

[0148] 17. Data analysis.

[0149] It can be seen from Fig.15 that in the y - x curve graph of the right straight edge 91, obvious inflection points appear when x = x1 and x = x2. Before data analysis, the parts where x < x1 and x > x2 are discarded first, corresponding to Fig.15 Among the curves C1 and C3, the part between the intervals [x1, x2] is retained, corresponding to the curve C2. The two discarded parts are the measured data beyond the long straight edge, which has no analytical significance. Since the front and rear ends of the right straight edge 91 are positioned at the standard positions by the positioning bosses 151, the y values corresponding to x1 and x2 are both zero.

[0150] From Fig.16 It can be seen that in the y - x curve graph of the left straight edge 92, obvious inflection points appear when x = x3 and x = x4. Before data analysis, the parts where x < x3 and x > x4 are discarded first, and the part between the intervals [x3, x4] is retained. The two discarded parts are the measured data beyond the long straight edge, which has no analytical significance.

[0151] a. The difference in the abscissas at the two inflection points of the measurement data of the right straight edge 91, that is, x2 - x1, is judged whether it is equivalent to the length B = 900 mm of the right straight edge 91. If B - (x2 - x1) does not exceed 2 mm, it is considered that the length of the long straight edge of the wooden floor 9 meets the expected condition; if this value exceeds 2 mm, it is considered that there is a phenomenon of material shortage at least at one end of the right straight edge 91, or the chamfer made is too large and the length of the right straight edge 91 is insufficient, and it is counted as unqualified;

[0152] Similarly, it is also necessary to judge the difference in the abscissas at the two inflection points of the measurement data of the left straight edge 92, that is, x4 - x3, to judge whether it is equivalent to the length B = 900 mm of the left straight edge 92. If B - (x4 - x2) does not exceed 2 mm, it is considered that the length of the long straight edge of the wooden floor 9 meets the expected condition; if this value exceeds 2 mm, it is considered that the left straight edge 92 is unqualified;

[0153] x1 and x3 are values very close to 0, but they will not be equal to 0; the detection value of the displacement sensor when x = 0 is at least 0.3 mm, and this value has been discarded;

[0154] b. For the wooden floor 9 judged as qualified in condition a, if the difference between the maximum value and the minimum value of the data collected by the right displacement sensor 212 exceeds 0.2 mm, it is judged that the straightness of the right straight edge 91 does not meet the requirements, and this wooden floor 9 is unqualified;

[0155] c. For the wooden floor 9 judged as qualified in condition b, if the difference between the maximum value and the minimum value of the data collected by the left displacement sensor 212 exceeds 0.2 mm, it is judged that the straightness of the left straight edge 92 does not meet the requirements, and this wooden floor 9 is unqualified;

[0156] d. For the wooden floor 9 judged as qualified in condition c, the sum of the data yL collected by the left displacement sensor 212 and the data yR collected by the right displacement sensor 212 corresponding to the same distance x is recorded as the sum of deviations yA=yL+yR. The maximum and minimum values ​​of the sum of all calculated deviations yA are calculated. If the difference between the maximum and minimum values ​​exceeds 0.2 mm, that is, the difference between the maximum and minimum values ​​of the width between the right straight edge 91 and the left straight edge 92 exceeds 0.2 mm, the wooden floor 9 is unqualified.

[0157] If the wooden floor 9 is not judged as unqualified by any of the above conditions, it is qualified.

[0158] 18. Classify and dispose according to the evaluation results in step 17;

[0159] If the wooden floor 9 is qualified, the lifting cylinder 42 drives the combination of the carrying bracket 43, the carrying claw 44, the carrying finger 45 and the wooden floor 9 to move downward, and the two carrying claws 44 drive the two pairs of carrying fingers 45 to flip in the opposite direction, respectively releasing the front and rear ends of the first wooden floor 9, and the wooden floor 9 is put back on the main machine belt 12; the lifting cylinder 42 drives the combination of the carrying bracket 43, the carrying claw 44 and the carrying finger 45 to move upward, and the carrying claw 44 leaves the main machine belt 12; the front stop cylinder 61 drives the front stop plate 62 to retract downward and leave the walking path of the wooden floor 9; the wooden floor 9 moves forward with the main machine belt 12; one detection process ends; re-execute step 2;

[0160] If the wooden floor 9 is unqualified, the push cylinder 41 drives the lifting cylinder 42, the transport bracket 43, the transport claw 44, the transport finger 45 and the wooden floor 9 to move horizontally to the right, so that the wooden floor 9 is moved horizontally to just above the rear end of the auxiliary conveyor 8; the lifting cylinder 42 drives the transport bracket 43, the transport claw 44, the transport finger 45 and the wooden floor 9 to move horizontally downward, and the two transport claws 44 drive the two pairs of transport fingers 45 to flip in the opposite direction, respectively releasing the front and rear ends of the first wooden floor 9, and the wooden floor 9 is placed on the auxiliary machine belt 82; the lifting cylinder 42 drives the transport bracket 43, the transport claw 44, the transport finger 45 and the wooden floor 9 to move horizontally downward, and the two transport claws 44 drive the two pairs of transport fingers 45 to flip in the opposite direction, respectively releasing the clamping of the first wooden floor 9 at both ends, and the wooden floor 9 is placed on the auxiliary machine belt 82; The cylinder 42 drives the combination of the transport bracket 43, the transport claw 44 and the transport finger 45 to translate upward, and the transport claw 44 leaves the auxiliary machine belt 82; the push cylinder 41 drives the lifting cylinder 42, the transport bracket 43, the transport claw 44 and the transport finger 45 to translate to the left, and the combination of the transport claw 44 and the transport finger 45 returns to the top of the main machine belt 12; the auxiliary machine motor 83 is started, and the unqualified wooden floor 9 is translated away from the placement position with the auxiliary machine belt 82, and the auxiliary machine motor 83 stops; one detection process is completed; re-execute step 2.

[0161] Before doing the above detection work, it is often necessary to calibrate the size using the manual control mode. Refer to step 4, put the standard template instead of the wooden floor 9 on the main machine belt 12, and the standard template is blocked by the front baffle 62, and then execute steps 5 to 9, 11, and 12, so that the two detection rollers 2121 are respectively in contact with the middle part of the right straight edge 91 and the left straight edge 92, and the handling component 4 clamps, fixes, and lifts the wooden floor 9. The two displacement sensors 212 collect data and set the data values ​​collected at this time to 0 mm, which is the standard value. Then the value collected in the actual detection work is the deviation relative to the standard value. Based on this, when the detection rod 2123 continues to extend, the value collected is a positive number, and when the detection rod 2123 retracts, the value collected is a negative number.

[0162] By repeating the above steps 2 to 18, the wooden floors 9 continuously delivered by the wooden floor veneer device can be inspected one by one, judged whether they are qualified and classified for disposal.

[0163] Embodiment 2, a method for controlling the external dimensions of a wooden floor veneer device, comprising the following steps:

[0164] S1. The rear baffle cylinder 51 drives the rear baffle 52 to extend upward;

[0165] S2. The parallel clamp 71 drives the parallel clamp finger 72 to release the clamping of the first wooden floor 9;

[0166] S3. The parallel clamp 71 drives the parallel clamp finger 72 to clamp the second wooden floor 9 next to the back;

[0167] S4. The front baffle cylinder 61 drives the front baffle 62 to extend upward;

[0168] S5. The rear baffle cylinder 51 drives the rear baffle 52 to move downward;

[0169] S6. The servo motor 34 drives the detection bracket 23 to translate to the middle position where the positioning protrusion 222 is aligned with the left straight edge 92 of the first wooden floor 9;

[0170] S7. The positioning cylinder 221 drives the positioning protrusion 222 to push the first wooden floor 9 to the middle position of the left straight edge 92;

[0171] S8. The lifting cylinder 42 drives the transport claw 44 and the transport finger 45 to move downward;

[0172] S9. The two transport claws 44 drive two pairs of transport fingers 45 to flip and clamp the front and rear ends of the first wooden floor 9 respectively;

[0173] S10. The positioning cylinder 221 drives the positioning protrusion 222 to retract;

[0174] S11. The lifting cylinder 42 drives the wooden floor 9 to move upward;

[0175] S12. The servo motor 34 drives the detection unit 2 to move backward to a position two to three centimeters from the rear end of the wooden floor 9;

[0176] S13. The servo motor 34 stops;

[0177] S14. The two detection cylinders 211 drive the two displacement sensors 212 to translate toward each other;

[0178] S15. The two displacement sensors 212 start collecting data;

[0179] S16. The servo motor 34 drives the detection unit 2 to move backward;

[0180] S17. When the data collected by the two displacement sensors 212 exceeds 0.3 mm, the servo motor 34 stops and the displacement sensor 212 stops collecting data;

[0181] S18. The servo motor 34 drives the detection unit 2 to move forward, and the displacement sensor 212 starts to collect and save data;

[0182] S19. When the data collected by the two displacement sensors 212 exceeds 0.3 mm, the servo motor 34 stops and the displacement sensor 212 stops collecting data;

[0183] S20. The two detection cylinders 211 drive the two displacement sensors 212 to move in opposite directions;

[0184] S21. Analyze the data and determine whether the wooden floor 9 is qualified or unqualified;

[0185] S22. If the wooden floor 9 is qualified, the procedure of placing it on the main conveyor 1 is executed; step S1 is executed;

[0186] S23. If the wooden floor 9 is unqualified, the procedure of placing it on the secondary conveyor 2 is executed; step S1 is executed;

[0187] S24. The main program ends.

[0188] When an error is encountered, jump to step S24.

[0189] The procedure for placing onto the main conveyor 1 comprises the following steps:

[0190] S101. The lifting cylinder 42 drives the transport bracket 43, the transport claw 44, the transport finger 45 and the combination of the wooden floor 9 to move downward;

[0191] S102. Two pairs of transporting claws 44 drive two pairs of transporting fingers 45 to flip in the opposite direction, respectively releasing the clamping of the first wooden floor 9;

[0192] S103. The lifting cylinder 42 drives the transport bracket 43, the transport claw 44 and the transport finger 45 to translate upward;

[0193] S104. The front baffle cylinder 61 drives the front baffle 62 to retract downward;

[0194] S105. The subroutine ends.

[0195] The procedure for placing on the secondary conveyor 2 comprises the following steps:

[0196] S201. The push cylinder 41 drives the lifting cylinder 42, the transport bracket 43, the transport claw 44, the transport finger 45 and the combination of the wooden floor 9 to the right;

[0197] S202. The lifting cylinder 42 drives the transport bracket 43, the transport claw 44, the transport finger 45 and the combination of the wooden floor 9 to move downward;

[0198] S203. Two pairs of transporting claws 44 drive two pairs of transporting fingers 45 to flip in the opposite direction, respectively releasing the clamping of the first wooden floor 9;

[0199] S204. The lifting cylinder 42 drives the transport bracket 43, the transport claw 44 and the transport finger 45 to move upward;

[0200] S205. The push cylinder 41 drives the lifting cylinder 42, the transport bracket 43, the transport claw 44 and the transport finger 45 to move to the left;

[0201] S206. Auxiliary motor 83 starts;

[0202] S207. The auxiliary motor 83 stops;

[0203] S208. The subroutine ends.

[0204] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the scope of the present invention. Thus, if these modifications and variations of the present invention belong to the scope of the present invention and its equivalent technology, the present invention is also intended to include these changes and variations.

Claims

1. A device for detecting the external dimensions of a wooden floor veneer device, comprising a detection component (2) and a frame assembly (3); characterized in that: The frame assembly (3) comprises a frame (35) and a linear guide rail (31), wherein the linear guide rail (31) and the frame (35) are fixedly connected; the detection assembly (2) comprises two detection assemblies (21), a detection bracket (23) and a slider (24); the slider (24) and the detection bracket (23) are fixedly connected, and the slider (24) and the linear guide rail (31) form a linear guide rail pair; the detection assembly (21) comprises a detection cylinder (211) and a displacement sensor (212); The housing of the displacement sensor (212) is fixedly connected to the piston rod of the detection cylinder (211); the displacement sensor (212) comprises a detection roller (2121), a return spring (2122) and a detection rod (2123); the direction in which the piston rod of the detection cylinder (211) extends is the same as the direction in which the connected detection rod (2123) extends; the piston rods of the two detection cylinders (211) are horizontally opposed to each other left and right; the detection assembly (2) moves in a front-to-back direction along the linear guide rail (31); The frame assembly (3) further comprises a synchronous wheel (32), a synchronous belt (33) and a servo motor (34); the synchronous wheel (32) is connected to the frame (35) via a rotating pair; the synchronous belt (33) is wound between two synchronous wheels (32); the housing of the servo motor (34) is fixedly connected to the frame (35), and the output shaft of the servo motor (34) is fixedly connected to one of the synchronous wheels (32); a belt clamp (25) is provided on the detection bracket (23), and the belt clamp (25) fixes and clamps the synchronous belt (33); It also comprises a main conveyor (1); the main conveyor (1) comprises two main rollers (11), two main belts (12), a main motor (13), a main frame (14) and a main fence (15); the two main rollers (11) are respectively connected to the front and rear ends of the main frame (14) through a rotating pair, and the two main belts (12) are respectively tensioned and wound side by side on the two main rollers (11); the main fence (15) is arranged on the left and right sides of the main belt (12); the housing of the main motor (13) is fixedly connected to the main frame (14), and the output shaft of the main motor (13) is fixedly connected to one of the main rollers (11); It also includes a front stopper assembly (6), the front stopper assembly (6) including a front stopper cylinder (61) and a front stopper plate (62), the cylinder body of the front stopper cylinder (61) being fixedly connected to the frame (35), and the piston rod of the front stopper cylinder (61) being fixedly connected to the front stopper plate (62); the front stopper cylinder (61) extends upward to block the passage for the wooden floor (9) to move forward in translation; Two positioning protrusions (151) are provided on the right main engine fence (15); the detection unit (2) is also provided with a positioning assembly (22); the positioning assembly (22) comprises a positioning cylinder (221) and a positioning protrusion (222); the cylinder body of the positioning cylinder (221) and the detection bracket (23) are fixedly connected, the piston rod of the positioning cylinder (221) and the positioning protrusion (222) are fixedly connected, and the positioning cylinder (221) drives the positioning protrusion (222) to push the middle position of the left straight edge (92) of the wooden floor (9); The machine also comprises a rear baffle assembly (5), the rear baffle assembly (5) comprising a rear baffle cylinder (51) and a rear baffle plate (52), the cylinder body of the rear baffle cylinder (51) being fixedly connected to the frame (35), and the piston rod of the rear baffle cylinder (51) being fixedly connected to the rear baffle plate (52); the rear baffle cylinder (51) drives the rear baffle plate (52) to extend upwards, thereby blocking a passage for the wooden floor (9) to move forward in translation; the rear baffle assembly (5) is located behind the front baffle assembly (6); The main conveyor (1) further comprises an electric roller (16), wherein the electric roller (16) comprises an electric roller body (161) and an electric roller flat shaft (162); the side of the electric roller flat shaft (162) comprises two mounting planes (163) which are parallel to the axis and opposite to each other; a vertical slide groove (152) is provided on the main machine fence (15), and the two mounting planes (163) are slidably matched with the vertical slide groove (152).

2. A device for detecting the external dimensions of a wooden floor veneer device as claimed in claim 1, characterized in that: The machine also comprises a transport assembly (4); the transport assembly (4) comprises a horizontal push cylinder (41), a lifting cylinder (42), a transport bracket (43), a transport claw (44) and a transport finger (45); the horizontal push cylinder (41) and the lifting cylinder (42) are cylinders with guide rods; the cylinder body of the horizontal push cylinder (41) is fixedly connected to the frame (35), the piston rod of the horizontal push cylinder (41) is fixedly connected to the cylinder body of the lifting cylinder (42), the piston rod of the horizontal push cylinder (41) extends to the right, and the piston rod of the lifting cylinder (42) extends downward. The transport bracket (43) and the piston rod of the lifting cylinder (42) are fixedly connected; the transport claw (44) comprises a claw cylinder body (441) and two claw bodies (442); the claw cylinder body (441) and the transport bracket (43) are fixedly connected; the transport fingers (45) and the claw bodies (442) are fixedly connected; the ends of the two transport claws (44) with the claw bodies (442) are front and back facing each other, and the transport claws (44) drive a pair of transport fingers (45) to flip, thereby clamping the front and back ends of the wooden floor (9) located between the two fingers.

3. A device for detecting the external dimensions of a wooden floor veneer device as claimed in claim 2, characterized in that: The machine also includes a fixing assembly (7); the fixing assembly (7) includes a parallel clamping jaw (71) and two parallel clamping fingers (72); the parallel clamping jaw (71) includes a parallel clamping jaw cylinder (711) and two parallel clamping jaw bodies (712); the parallel clamping jaw cylinder (711) and the frame (35) are fixedly connected; the two parallel clamping jaw bodies (712) are respectively fixedly connected to the two parallel clamping fingers (72), and the parallel clamping jaw (71) drives the two parallel clamping fingers (72) to move synchronously toward each other.

4. A device for detecting the external dimensions of a wooden floor veneer device as claimed in claim 3, characterized in that: The invention also comprises an auxiliary conveyor (8); the auxiliary conveyor (8) comprises two auxiliary rollers (81), two auxiliary belts (82), an auxiliary motor (83), an auxiliary frame (84) and an auxiliary fence (85); the two auxiliary rollers (81) are respectively connected to the front and rear ends of the auxiliary frame (84) through a rotating pair, and the two auxiliary belts (82) are respectively tensioned and wound side by side on the two auxiliary rollers (81); the auxiliary fence (85) is arranged on the left and right sides of the auxiliary belts (82); the housing of the auxiliary motor (83) is fixedly connected to the auxiliary frame (84), and the output shaft of the auxiliary motor (83) is fixedly connected to one of the auxiliary rollers (81).

5. The device for detecting the external dimensions of a wooden floor veneer device according to claim 4, characterized in that: It also includes a programmable logic controller; the detection cylinder (211), the displacement sensor (212), the positioning cylinder (221), the servo motor (34), the rear stop cylinder (51), the front stop cylinder (61), the push cylinder (41), the lifting cylinder (42), the transport claw (44), the parallel clamp (71) and the auxiliary motor (83) are respectively electrically connected to the programmable logic controller.

6. A control method for the device for detecting the external dimensions of a wooden floor veneer device as claimed in claim 5, characterized in that: The following steps are involved: S1. The rear baffle cylinder (51) drives the rear baffle (52) to extend upward; S2. The parallel clamp (71) drives the parallel clamp finger (72) to release the clamping of the first wooden floor (9); S3. The parallel clamp (71) drives the parallel clamp finger (72) to clamp the second wooden floor (9) next to it; S4. The front baffle cylinder (61) drives the front baffle (62) to extend upward; S5. The rear baffle cylinder (51) drives the rear baffle (52) to move downward; S6. The servo motor (34) drives the detection bracket (23) to translate to the middle position where the positioning protrusion (222) is aligned with the left straight edge (92) of the first wooden floor (9); S7. The positioning cylinder (221) drives the positioning protrusion (222) to push the first wooden floor (9) to the middle position of the left straight edge (92); S8. The lifting cylinder (42) drives the transporting claw (44) and the transporting finger (45) to move downward; S9. The two transporting air claws (44) respectively drive the two pairs of transporting fingers (45) to flip and clamp the front and rear ends of the first wooden floor (9) respectively; S10. The positioning cylinder (221) drives the positioning protrusion (222) to retract; S11. The lifting cylinder (42) drives the first wooden floor (9) to move upward; S12. The servo motor (34) drives the detection unit (2) to move backward to a position two to three centimeters from the rear end of the first wooden floor (9); S13. The servo motor (34) stops; S14. The two detection cylinders (211) respectively drive the two displacement sensors (212) to translate toward each other; S15. The two displacement sensors (212) start collecting data; S16. The servo motor (34) drives the detection unit (2) to move backward; S17. When the data collected by the two displacement sensors (212) exceeds 0.3 mm, the servo motor (34) stops and the displacement sensor (212) stops collecting data; S18. The servo motor (34) drives the detection unit (2) to move forward, and the displacement sensor (212) starts to collect and save data; S19. When the data collected by the two displacement sensors (212) exceeds 0.3 mm, the servo motor (34) stops and the displacement sensor (212) stops collecting data; S20. The two detection cylinders (211) respectively drive the two displacement sensors (212) to translate in opposite directions; S21. Analyze the data and determine whether the first wooden floor (9) is qualified or unqualified; S22. If the first wooden floor (9) is qualified, the procedure of placing it on the main conveyor (1) is executed; Execute step S1; S23. If the first wooden floor (9) is unqualified, execute the procedure of placing it on the secondary conveyor (8); execute step S1; S24. The main program ends.

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