A control device for automatically distributing and placing bolts for grid

Abstract

The present invention relates to the technical field of control devices, and in particular to a control device for automatic distribution and delivery of bolts for grid frames, comprising: a bolt automatic delivery structure for delivering bolts to a data collector; a data collector for detecting bolt performance; a main control machine for establishing a database and selecting combinations with acceptable adaptability; a grabbing structure for grabbing and fixing; a detector for testing mechanical properties of pre-welded products and delivering the pre-welded products to a welder; a welder for welding the pre-welded products and detecting welding results and delivering them to a waste bin and a discharge bin according to the demerits. The problem of low yield and material waste in the prior art is overcome.

Description

Technical Field

[0001] The invention relates to the technical field of control devices, and in particular to a control device for automatic distribution and delivery of bolts for a grid. Background Art

[0002] As an efficient and stable supporting structure, bolt ball grid has been widely used in the field of modern construction. It has the advantages of stable and reliable structure, strong adaptability, fast construction speed and good economy, and can provide more reliable and flexible support and stability for modern buildings. With the continuous development of modern construction technology, bolt ball grid will be more widely used and developed in the future construction field.

[0003] Chinese patent authorization announcement number: CN220481610U, discloses a bolt picking and placing device and an automatic bolt picking and placing robot, which relates to the technical field of auxiliary installation tools, in order to solve the technical problems that the existing technology adopts the methods of clamping with claws, permanent magnet magnetic attraction, and electromagnet magnetic attraction, which cannot realize bolt cap recognition, and cannot ensure the positioning accuracy of the bolt into the bolt hole, resulting in high production cost and low production efficiency. The device includes a screw mechanism, a sleeve and a base, wherein the screw mechanism includes a screw and a slider sleeved on the screw; the sleeve is fixedly connected to one end of the screw, and a magnet is arranged in the sleeve; the base is connected to the slider, located between the slider and the sleeve, and is used to connect with the mechanical claw. The utility model is used to realize bolt cap recognition and ensure the positioning accuracy of the bolt into the bolt hole.

[0004] Chinese patent authorization announcement number: CN215967324U, discloses an automatic bolt tightening and marking device, including a base and a support plate, and also includes a controller, an arc-shaped rotary plate, a marking mechanism and a tightening mechanism. The marking mechanism is arranged at the top of the base, the marking mechanism includes a brush and a sliding component, the sliding component is arranged at the top of the base, the brush is fixed on the sliding component, the tightening mechanism is arranged at the top of the base, the tightening mechanism includes a sleeve, a lifting component and a measuring component, the lifting component is arranged at the top of the support plate, and the sleeve is fixed on the lifting component. The utility model can automatically realize the pre-tightening of bolts, and has a fast speed and high efficiency, reduces the labor workload of workers, saves manpower, and can mark lines in time to prevent workers from forgetting and improve construction efficiency.

[0005] However, the above method has the following problems: In the prior art, there are cases where bolts do not meet the standards and cannot be installed with some bolt balls and cone heads. Such bolts are usually regarded as waste and discarded, resulting in low yield and material waste. Summary of the invention

[0006] To this end, the present invention provides a control device for automatically distributing and placing bolts for a grid frame. In the prior art, there are situations where the bolts do not meet the standards and cannot be installed with some bolt balls and cone heads. Such bolts are usually regarded as waste and discarded instead of being fully utilized, resulting in low yield and material waste.

[0007] To achieve the above-mentioned purpose, the present invention provides a control device for automatically distributing and placing bolts for a grid, comprising:

[0008] The automatic bolt delivery structure is used to deliver the bolts to the data collector;

[0009] The data collector is connected to the automatic bolt delivery structure, and is used to detect the bolts after marking, transport unqualified bolts to the waste box, and transmit the data to the main control computer to build a database;

[0010] The main control machine is connected with the data collector, thread tester, gripping structure, welding tester and detector to establish a database of bolts, bolt balls, cone heads and pipes and select the combination that meets the adaptability standards;

[0011] A grabbing structure, connected to the data collector, for grabbing and fixing the bolt ball and cone head specified by the main control machine;

[0012] A thread tester connected to the gripping structure, used to pre-tighten the tested bolts with the cone head and the bolt ball respectively, and transport them to the welding tester;

[0013] A welding tester, connected to the thread tester, used to pre-weld the cone head and the pipe and transport it to the detector after testing;

[0014] A detector connected to the welding tester, used to perform mechanical property tests on the pre-welded products and to transport the pre-welded products to the welder;

[0015] The welder is connected to the detector and is used to weld the pre-welded product and detect the welding result;

[0016] A waste box, connected to the data collector and the welder, for collecting waste;

[0017] A discharge box is connected to the welder and is used to collect qualified welded products.

[0018] Furthermore, the data collector detects the basic size and mechanical properties of the bolt, and transmits the detection data to the main control computer. The main control computer matches the bolt detection data with the data of the bolt ball, finds a group of bolts, bolt balls and cone heads that meet the fitness standards, and records the data.

[0019] Wherein, the basic characteristics include thread pitch, diameter, and thread length;

[0020] The mechanical property is the spindle inclination of the bolt, bolt ball or cone head determined according to the thread pitch, diameter and thread length;

[0021] The degree of fit is a weighted value determined by matching the basic characteristics and mechanical properties of the bolt with the corresponding properties of the bolt ball and cone head.

[0022] Furthermore, the data collector is preset with standard sizes, and the bolts are tested to obtain actual sizes, which are then sent to a waste pool or a thread tester according to the test results:

[0023] If the actual size is not within the standard size range, the bolt will be sent to the waste pool;

[0024] If the actual size is within the standard size range, the bolt is sent to a thread tester;

[0025] The standard size is the size that the bolt ball can accept for installation.

[0026] Furthermore, the thread tester installs the bolt with the cone head and the bolt ball respectively, and determines whether it is necessary to reselect the bolt ball and cone head that meet the fit standard according to the installation results.

[0027] Furthermore, the thread tester first installs the cone head and the bolt to determine whether the central axes of the bolt and the cone head are aligned after installation:

[0028] If the central axis cannot be aligned, the main control machine selects a cone head that meets the fit requirements and reinstalls it;

[0029] If the central axes are aligned, the thread tester performs a pre-tightening test on the bolt ball and the bolt.

[0030] Furthermore, after the bolt and the cone head are installed properly, the thread tester pre-tightens the bolt and the bolt ball. The thread tester is preset with a standard pre-tightening force to detect whether the bolt and the bolt ball reach the standard pre-tightening force after pre-tightening:

[0031] If the standard preload force is reached after pre-tightening, the thread tester will transport the bolt to the welder;

[0032] If the standard pre-tightening force is not reached after pre-tightening, the main control machine re-selects a bolt ball that meets the adaptability and repeats the pre-tightening test.

[0033] Furthermore, the welding tester welds the tightened cone head to the pipe to determine whether the central axis of the pipe and the cone head in the welded product are aligned:

[0034] If the central axes are aligned, the weld tester delivers the welded product to the detector;

[0035] If the central axis cannot be aligned, the welding tester will disassemble the pipe and reselect the adaptable cone head and bolt ball.

[0036] Furthermore, the detector is preset with a standard pre-welding tensile strength, and after receiving the pre-welded product, the pre-welding tensile strength test is performed on the pre-welded product.

[0037] If the pre-weld tensile strength is not less than the standard pre-weld tensile strength, the main control computer records the numbers of the bolts, cone heads and bolt balls used, and transports the cone heads and pipes to the welder for welding;

[0038] If the pre-weld tensile strength is less than the standard pre-weld tensile strength, the main control machine reselects bolt balls and cone heads that meet the adaptability and repeats the test;

[0039] Furthermore, the automatic bolt delivery structure includes a loading component, a lifting component, a scanning component, and a marking component. The loading component arranges the bolts in a row and transports them to the position of the lifting component. The lifting component transports the bolts to the scanning component. The scanning component scans the position of the bolts and transports the bolts in a marked state to the marking component through the lifting component. The marking component marks the bolts.

[0040] The marking state is a state where the bolt to be marked faces upward.

[0041] Furthermore, the welder welds the pre-welded product to obtain the welded product, and performs a tensile strength test on the welded product. A standard tensile strength is set in the welder, and the actual tensile strength is compared with the standard tensile strength to determine the conveying position of the welded product;

[0042] If the actual tensile strength is less than the standard tensile strength, the welder will transport the welded product to the waste bin;

[0043] If the actual tensile strength is not less than the standard tensile strength, the welder conveys the welded product to the discharge box.

[0044] Compared with the prior art, the beneficial effect of the present invention lies in that, by collecting data on bolts and establishing a database, bolt balls and cone heads that meet the adaptability standards are found, and by pre-installation and pre-welding, tests are carried out to determine whether the bolts can cooperate with the bolt balls and cone heads to achieve the desired effect, thereby reducing the waste caused by non-standard bolts, improving the product yield, and improving the efficiency of material use, overcoming the problem in the prior art that the bolts do not meet the standards and cannot be installed with some bolt balls and cone heads. Such bolts are usually regarded as waste and discarded instead of being fully utilized, resulting in low yield and material waste.

[0045] Furthermore, the size collected by the data collector is used to determine whether it meets the standard size, thereby screening out bolts that cannot be installed in the bolt ball, avoiding the detection system being too lengthy due to all bolts being pre-tightened, and improving the working efficiency of the device.

[0046] Furthermore, the bolts, bolt balls and cone heads are pre-tightened by using a thread tester, and the center axis and pre-tightening force are compared, so that the bolt balls and cone heads of the unqualified parts are re-selected, ensuring that the bolts can be installed normally, avoiding the situation where some bolts are discarded, and improving the product yield.

[0047] Furthermore, by pre-welding the cone head and the pipe, it is determined whether the pre-welded product meets the standard requirements, thereby avoiding the waste caused by the product not meeting the standard after full welding, reducing material loss and improving the yield rate.

[0048] Furthermore, by marking the products, a basic information database of the products was constructed, which avoided the problem of material loss caused by poor fit due to confusion in the installation of bolts and bolt balls when the products were used, thereby improving the utilization rate of the products and reducing losses.

[0049] Furthermore, the pre-welded products are welded by a welder, and the performance of the products after welding is tested to screen out welded products that do not meet the requirements, thereby avoiding inferior products from entering the market and improving the product yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a structural schematic diagram of a control device for automatic distribution and placement of bolts for a grid frame of the present invention;

[0051] Figure 2 The present invention is a flowchart of a control device for automatically allocating and placing bolts for a grid structure according to an embodiment of the present invention. DETAILED DESCRIPTION

[0052] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0053] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0054] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0055] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] See also Figure 1 The structure diagram of the control device for automatic distribution and delivery of bolts for grid frames includes:

[0057] The automatic bolt delivery structure is used to deliver the bolts to the data collector;

[0058] The data collector is connected to the automatic bolt delivery structure, and is used to detect the bolts after marking, transport unqualified bolts to the waste box, and transmit the data to the main control computer to build a database;

[0059] The main control machine is connected with the data collector, thread tester, gripping structure, welding tester and detector to establish a database of bolts, bolt balls, cone heads and pipes and select the combination that meets the standard of fit;

[0060] The grabbing structure is connected to the data collector and is used to grab and fix the bolt ball and cone head specified by the main control machine;

[0061] A thread tester connected to the gripping structure is used to pre-tighten the tested bolts with the cone head and the bolt ball respectively and convey them to the welding tester;

[0062] A welding tester, connected to the thread tester, is used to pre-weld the cone head to the pipe and transport it to the detector after testing;

[0063] A detector connected to the welding tester for testing the mechanical properties of the pre-welded product and conveying the pre-welded product to the welding machine;

[0064] A welder, connected to the detector, for welding the pre-welded product and detecting the welding result;

[0065] A waste box, connected to the data collector and the welder, for collecting waste;

[0066] The discharge box is connected to the welder and is used to collect qualified welded products.

[0067] The standard size is a preset qualified size of the bolt, and in practice, the size is determined by the tolerance of the equipment.

[0068] Please combine Figure 1 See also Figure 2 , which is a flow chart of a control device for automatic distribution and delivery of bolts for grid structures in an embodiment:

[0069] Step 1: The automatic bolt delivery structure delivers the bolts to the data collector;

[0070] Step 2: The data collector detects the size and basic performance of the bolts, determines whether the size meets the standard, and transports the bolts that do not meet the standard to the waste box;

[0071] Step 3: The thread tester pre-tightens the bolt with the bolt ball and cone head that meet the fit standard, and replaces the bolt ball and cone head that cannot be tightened until they are tightened;

[0072] Step 4, pre-weld the cone head and the pipe, and transport the pre-welded product to the detector for inspection, and transport the marked product to the welder for welding. For the unqualified products, re-select the bolt ball and cone head that meet the adaptability and repeat steps 2-4;

[0073] Step 5: The welder presses the pre-welded product and tests the tensile strength after welding. If it meets the standard, it is transported to the discharge box, and if it does not meet the standard, it is transported to the waste box.

[0074] By collecting data on bolts and establishing a database, we can find bolt balls and cone heads that meet the fit standards. Through pre-installation and pre-welding, we can test to determine whether the bolts can cooperate with the bolt balls and cone heads to achieve the desired effect, thereby reducing the waste caused by non-standard bolts, improving the product yield, and improving the efficiency of material use. This overcomes the problem in the prior art that bolts do not meet the standards and cannot be installed with some bolt balls and cone heads. Such bolts are usually regarded as waste and discarded instead of being fully utilized, resulting in low yields and material waste.

[0075] Specifically, the data collector detects the basic size and mechanical properties of the bolts, and transmits the detection data to the main control computer. The main control computer matches the bolt detection data with the data of the bolt ball, finds a group of bolts, bolt balls and cone heads that meet the fitness standards, and records the data.

[0076] Among them, the basic characteristics include thread pitch, diameter, and thread length;

[0077] The mechanical properties are the spindle inclination of the bolt, bolt ball or cone head determined by the thread pitch, diameter and thread length;

[0078] The degree of fit is a weighted value determined by matching the basic characteristics and mechanical properties of the bolt with the corresponding properties of the bolt ball and cone head.

[0079] It can be understood that the spindle inclination angle is the difference between the preset center axis and the actual center axis of the bolt, bolt ball or cone head. Generally, the inclination angle is related to the thread pitch, diameter, and thread length. Those skilled in the art can measure it in practice, and will not be described in detail here.

[0080] In implementation, bolts and bolt balls with a fit degree lower than 95% are judged as unfit, and bolts and bolt balls with a fit degree not less than 95% are judged as meeting the fit degree standards;

[0081] The data logger collected that the thread pitch of the bolt is 3mm, the diameter is 24mm, the length is 5cm, and the corresponding spindle inclination is 3°. The thread pitch in the preset bolt ball is 3mm, the diameter is 24mm, the length is 5cm, and the corresponding spindle inclination is 3°. It is concluded that the fit between this bolt and the bolt ball is 100%;

[0082] The data logger collected that the thread pitch of the bolt is 3mm, the diameter is 23.6mm, the length is 4.8cm, and the corresponding spindle inclination is 2.98°. The thread pitch in the preset bolt ball is 3mm, the diameter is 24.32mm, the length is 5.61cm, and the corresponding spindle inclination is 3.15°. It is concluded that the compatibility between this bolt and the bolt ball is 87%;

[0083] Specifically, the data logger is preset with standard sizes, and the actual size of the bolt is detected and sent to the waste pool or thread tester according to the test results:

[0084] If the actual size is not within the standard size range, the bolt will be sent to the waste pool;

[0085] If the actual size is within the standard size range, the bolt is sent to a thread tester;

[0086] Among them, the standard size is the size that the bolt ball can accept for installation.

[0087] In the implementation, the data collector is preset with a standard size of 23.24mm-24.63mm. When testing the bolt, it is found that the thread size of the bolt is 23.27mm. The data collector detects that the bolt meets the standard and sends it to the thread tester;

[0088] The data collector has a preset standard size of 23.24mm-24.63mm. After testing the bolts, it was found that the thread size of the bolts was 24.73mm. The data collector detected that the bolts did not meet the standard and were transported to the waste pool;

[0089] The data collector has a preset standard size of 23.42mm-24.57mm. When testing the bolts, it was found that the thread size of the bolts was 23.27mm. The data collector detected that the bolts did not meet the standard and were transported to the waste pool.

[0090] The size collected by the data collector is used to determine whether it meets the standard size, so as to screen out the bolts that cannot be installed in the bolt ball, avoiding the need for all bolts to be pre-tightened, which would cause the detection system to be too lengthy, and improve the working efficiency of the device, thereby further overcoming the problem in the prior art that the bolts do not meet the standards and cannot be installed with some bolt balls and cone heads. Such bolts are usually regarded as waste and discarded instead of being fully utilized, resulting in low yield and material waste.

[0091] Specifically, the thread tester installs the bolt with the cone head and the bolt ball respectively, and determines whether it is necessary to reselect the bolt ball and cone head that meet the fit standard based on the installation results.

[0092] Specifically, the thread tester first installs the cone head and the bolt to determine whether the central axes of the bolt and the cone head are aligned after installation:

[0093] If the central axis cannot be aligned, the main control machine selects a cone head that meets the fit requirements and reinstalls it;

[0094] If the center axes are aligned, the thread tester will perform a pre-tightening test on the bolt ball and the bolt.

[0095] Specifically, after the bolt and the cone head are installed properly, the thread tester pre-tightens the bolt and the bolt ball. The thread tester is preset with a standard pre-tightening force to detect whether the bolt and the bolt ball reach the standard pre-tightening force after pre-tightening:

[0096] If the standard preload force is reached after pre-tightening, the thread tester will transport the bolt to the welding tester;

[0097] If the standard pre-tightening force is not reached after pre-tightening, the main control machine re-selects a bolt ball that meets the adaptability and repeats the pre-tightening test.

[0098] In practice, the thread tester is set with a standard preload of 15800N. After testing the actual preload of the bolt and the bolt ball after pre-tightening, it is 15324N, which does not meet the standard preload. The thread tester disassembles the bolt and reselects the bolt ball and cone head that meet the matching requirements through the main control machine.

[0099] The thread tester is set with a standard preload force of 15800N. After testing, the actual preload force of the bolt and the bolt ball after pre-tightening is 15932N, which meets the standard preload force requirement. The thread tester then transports the bolt to the welding tester.

[0100] The bolts, bolt balls and cone heads are pre-tightened by using a thread tester, and the center axis and pre-tightening force are compared, so that the bolt balls and cone heads of the unqualified parts can be re-selected, ensuring that the bolts can be installed normally, avoiding the situation where some bolts are discarded, and improving the product yield rate, thereby further overcoming the situation in the prior art that the bolts do not meet the standards and cannot be installed with some bolt balls and cone heads. Such bolts are usually regarded as waste and discarded instead of being fully utilized, resulting in low yield rate and material waste.

[0101] Specifically, the welding tester pre-welds the tightened cone head and the pipe to determine whether the central axis of the pipe and the cone head in the welded product is aligned:

[0102] If the central axis is aligned, the weld tester delivers the welded product to the detector;

[0103] If the center axis cannot be aligned, the weld tester will disassemble the pipe and reselect the compatible cone head and bolt ball.

[0104] Specifically, the detector is preset with a standard pre-welding tensile strength. After receiving the pre-welded product, the pre-welding tensile strength test is performed on the pre-welded product.

[0105] If the pre-weld tensile strength is not less than the standard pre-weld tensile strength, the main control computer records the numbers of the bolts, cone heads and bolt balls used, and transports the cone heads and pipes to the welder for welding;

[0106] If the pre-weld tensile strength is less than the standard pre-weld tensile strength, the main control machine reselects bolt balls and cone heads that meet the adaptability and repeats the test;

[0107] It is understandable that the conventional testing method for welding points is to subject the welded product to a tensile or shear test, and the test target is the maximum tensile force that the welding point can withstand, generally in MPa.

[0108] In implementation, the detector is set with a standard pre-weld tensile strength of 730MPa. After the welding tester pre-welds the cone head and the pipe, the pre-welded product is transported to the detector for testing. The actual pre-weld tensile strength is detected to be 740MPa, and the pre-weld tensile strength is not less than the standard pre-weld tensile strength. The detector transports the pre-welded product to the welder;

[0109] The detector is set with a standard pre-weld tensile strength of 730MPa. After the welding tester pre-welds the cone head and the pipe, the pre-welded product is transported to the detector for testing. The actual pre-weld tensile strength is detected to be 720MPa. The pre-weld tensile strength is less than the standard pre-weld tensile strength. The main control machine reselects the bolt ball and cone head that meet the adaptability and retests.

[0110] Furthermore, by pre-welding the cone head and the pipe, it is determined whether the pre-welded product meets the standard requirements, thereby avoiding the waste caused by the product not meeting the standards after complete welding, reducing material loss, and improving the yield rate, thereby further overcoming the problem in the prior art that the bolts do not meet the standards and cannot be installed with some bolt balls and cone heads. Such bolts are usually regarded as waste and discarded instead of being fully utilized, resulting in low yield and material waste.

[0111] Specifically, the automatic bolt delivery structure includes a loading component, a lifting component, a scanning component, and a marking component. The loading component arranges the bolts in a row and transports them to the position of the lifting component. The lifting component transports the bolts to the scanning component. The scanning component scans the bolt placement position and transports the bolts in a marked state to the marking component through the lifting component. The marking component marks the bolts.

[0112] The marking state is when the bolt to be marked faces upward.

[0113] Furthermore, by marking the products, a basic information database of the products is constructed, which avoids the problem of material loss caused by the confusion in the installation of bolts and bolt balls when the products are used, resulting in poor fit and thus increased product utilization and reduced losses, thereby further overcoming the problem in the prior art that bolts do not meet the standards and cannot be installed with some bolt balls and cone heads. Such bolts are usually regarded as waste and discarded instead of being fully utilized, resulting in low yield and material waste.

[0114] Specifically, the welder welds the pre-welded product to obtain the welded product, and the welded product is tested for tensile strength. A standard tensile strength is set in the welder, and the actual tensile strength is compared with the standard tensile strength to determine the conveying position of the welded product;

[0115] If the actual tensile strength is less than the standard tensile strength, the welder will transport the welded product to the waste bin;

[0116] If the actual tensile strength is not less than the standard tensile strength, the welder conveys the welded product to the discharge box.

[0117] In the implementation, a standard tensile strength of 730 MPa is set in the welder. After the welder welds the pre-welded product, the actual tensile strength is detected to be 720 MPa. The actual tensile strength is less than the standard tensile strength, and the welder transports the welded product to the waste bin.

[0118] The standard tensile strength of 730MPa is set in the welder. After the welder welds the pre-welded product, the actual tensile strength is detected to be 740MPa. The actual tensile strength is not less than the standard tensile strength. The welder transports the welded product to the discharge box.

[0119] The pre-welded products are welded by a welder, and the performance of the products after welding is tested to screen out welded products that do not meet the requirements, thereby avoiding the influx of inferior products into the market and improving the yield rate of products, thereby further overcoming the problem in the prior art that bolts do not meet the standards and cannot be installed with some bolt balls and cone heads. Such bolts are usually regarded as waste and discarded instead of being fully utilized, resulting in low yield and material waste.

[0120] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0121] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A control device for automatically distributing and placing bolts for a grid, characterized in that: include: Automatic bolt delivery structure; A data collector is connected to the automatic bolt delivery structure, and is used to detect the bolts after marking, deliver the bolts that do not reach the standard size to the waste box, and deliver the data to the main control computer to build a database; A grabbing structure, connected to the data collector, for grabbing and fixing the bolt ball and cone head specified by the main control machine; A thread tester connected to the gripping structure, used to pre-tighten the tested bolts with the cone head and the bolt ball respectively, and transport them to the welding tester; A welding tester connected to the thread tester, used for pre-welding the cone head and the pipe, and conveying it to the detector after testing; a detector connected to the welding tester, used to perform mechanical property tests on pre-welded products and to transport the pre-welded products to the welder; A welder, connected to the detector, for welding the pre-welded product and detecting the welding result; A main control machine is connected to the data collector, the thread tester, the gripping structure, the welding tester and the detector respectively, and is used to establish a database of bolts, bolt balls, cone heads and pipes, and select several bolt combinations that meet the adaptability standards; A waste box, connected to the data collector and the welder, for collecting waste; A discharge box connected to the welder and used to collect qualified welded products; The data collector detects the basic characteristics and mechanical properties of the bolts, and transmits the detection data to the main control computer, which matches the bolt detection data with the data of the bolt ball, finds a group of bolts, bolt balls and cone heads that meet the fitness standard, and records the data; The basic characteristics include thread pitch, diameter, and thread length; The mechanical property is the spindle inclination of the bolt, bolt ball or cone head determined according to the thread pitch, diameter and thread length; The degree of fit is related to the corresponding mechanical properties of the bolt ball and cone head; The marking is to mark the corresponding bolt, and the standard size is the preset qualified size of the bolt.

2. The control device for automatically distributing and placing bolts for a grid according to claim 1, characterized in that: For a single bolt combination, the thread tester installs the bolt with the cone head and the bolt ball respectively, and determines whether it is necessary to reselect the bolt ball and cone head that meet the fit standard according to the installation results.

3. The control device for automatically distributing and placing bolts for a grid frame according to claim 2, characterized in that: The thread tester first installs the cone head and the bolt to determine whether the central axes of the bolt and the cone head are aligned after installation: If the central axis cannot be aligned, the main control machine selects a cone head that meets the fit requirements and reinstalls it; If the central axes are aligned, the thread tester performs a pre-tightening test on the bolt ball and the bolt.

4. The control device for automatically distributing and placing bolts for a grid according to claim 2, characterized in that: After the bolt and the cone head are installed properly, the thread tester pre-tightens the bolt and the bolt ball. The thread tester is preset with a standard pre-tightening force to detect whether the bolt and the bolt ball reach the standard pre-tightening force after pre-tightening: If the standard pre-tightening force is reached after pre-tightening, the thread tester conveys the bolt to the welding tester; If the standard pre-tightening force is not reached after pre-tightening, the main control machine re-selects a bolt ball that meets the adaptability and repeats the pre-tightening test.

5. The control device for automatic distribution and placement of bolts for grid frames according to claim 2, characterized in that: The welding tester welds the tightened cone head to the pipe to determine whether the central axis of the pipe and the cone head in the welded product are aligned: If the central axes are aligned, the welding tester conveys the welded product to the detector; If the central axis cannot be aligned, the welding tester will disassemble the pipe and reselect an adaptable cone head and bolt ball.

6. The control device for automatically distributing and placing bolts for a grid according to claim 3, characterized in that: The detector is preset with a standard pre-welding tensile strength. After receiving the pre-welded product, the pre-welding tensile strength test is performed on the pre-welded product. If the pre-weld tensile strength is not less than the standard pre-weld tensile strength, the main control computer records the numbers of the bolts, cone heads and bolt balls used, and transports the cone heads and pipes to the welder for welding; If the pre-weld tensile strength is less than the standard pre-weld tensile strength, the main control machine reselects a bolt ball and cone head that meets the fit and repeats the test.

7. The control device for automatically distributing and placing bolts for grid frames according to claim 3 is characterized in that: The data collector is preset with standard sizes, and the actual sizes are obtained by testing the bolts, and are sent to the waste pool or the thread tester according to the test results: If the actual size is not within the standard size range, the bolt is sent to the waste pool; If the actual size is within the standard size range, the bolt is sent to the thread tester.

8. The control device for automatically distributing and placing bolts for grid frames according to claim 1, characterized in that: The automatic bolt delivery structure includes a feeding component, a lifting component, a scanning component, and a marking component. The feeding component arranges the bolts in a row and transports them to the position of the lifting component. The lifting component transports the bolts to the scanning component. The scanning component scans the bolt placement position and transports the bolts to the marking component in a marked state through the lifting component. The marking component marks the bolts. The marking state is a state where the bolt to be marked faces upward.

9. A control device for automatic distribution and placement of bolts for a grid according to any one of claims 1 to 8, characterized in that: The welder welds the pre-welded product to obtain the welded product, and the welded product is tested for tensile strength. The welder is provided with a standard tensile strength, and the actual tensile strength is compared with the standard tensile strength to determine the conveying position of the welded product; If the actual tensile strength is less than the standard tensile strength, the welder transports the welded product to the waste bin; If the actual tensile strength is not less than the standard tensile strength, the welder conveys the welded product to a discharge box.

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