Automatic locking and punching assembly equipment for wire thread inserts

Abstract

A wire screw automatic locking and punching assembly device comprises a multi-axis robot, a screw feeder, a workbench and a locking and punching combination module, wherein the screw feeder and the workbench are located on the working path of the multi-axis robot, and the locking and punching combination module is linked with the multi-axis robot; the locking and punching combination module comprises a locking module, a tail punching module and a detection module installed on a mounting seat; the locking module comprises an intelligent tightening gun, a first connecting block, a batch rod and a first linear drive mechanism, and the tail punching module comprises a second linear drive mechanism, a second connecting block, a punch handle and a material collection unit. The present invention realizes full-automatic production by highly integrating the multifunctional modules required for each process step in the wire screw assembly process, does not need to be overly dependent on the skill level of the assembler, greatly improves the quality stability and assembly accuracy of the product, can save labor costs and speed up the production cycle, and can bring considerable economic benefits to the enterprise.

Description

Technical Field

[0001] The invention relates to the technical field of automatic assembly, in particular to an automatic locking and punching assembly device for a wire thread sleeve. Background Art

[0002] Wire thread insert is a new type of internal thread fastener, suitable for threaded connection, screwed into and fastened in the threaded hole of one of the connected parts to form a standard internal thread, and the bolt (or screw) is then screwed into it, also known as threaded thread insert, or thread insert for short. It is a spring-shaped internal and external thread concentric body made of high-strength, high-precision, smooth-surfaced stainless steel wire, mainly used to enhance and protect the internal thread of low-strength materials. The principle is to form an elastic connection between the screw and the thread inside the base, eliminate thread manufacturing errors, and improve the connection strength. Wire thread inserts are embedded in the threaded holes of low-strength engineering materials such as aluminum, magnesium alloy, cast iron, fiberglass, and plastic, and can form high-precision internal threads that meet international standards. It has the functions of high connection strength, earthquake resistance, impact resistance, and wear resistance, and can disperse stress to protect the base thread, greatly extending the service life of the base, and is widely used in various fields.

[0003] The diameter of the wire screw insert in the free state is slightly larger than the diameter of the screw hole it is installed in. During assembly, the wire screw insert is subjected to the torque of a special wrench to reduce its diameter and enter the screw hole that has been tapped with a special tap. After installation, the wire screw insert produces a spring-like expansion effect, which makes it firmly fixed in the threaded hole and will never be brought out when the screw is screwed out. The screwing process of the wire screw insert with an installation handle requires special equipment such as a special wrench, a punch breaker and a thread plug gauge. The installation process can be referred to as follows:

[0004] 1. Use a special wrench to make the wire thread insert pass through a guide thread, forcing the outer diameter of the wire thread insert to shrink so that it can be smoothly installed into the bottom hole;

[0005] 2. Use a punch to break off the installation handle of the wire screw insert;

[0006] 3. Check whether it is flat and whether the installation handle is punched successfully. If it is found to be uneven, rework is required. If it is found that the installation handle has not been punched off, it is necessary to punch the installation handle again.

[0007] In the process of implementing the present invention, the inventors found that the current practice has at least the following technical problems:

[0008] 1. The assemblers manually operate various professional tools, and they need to receive vocational skills training to enable them to be proficient in using special tools and know the assembly process. Only after they are qualified can they perform wire screw assembly operations, which is too dependent on the technical ability requirements of the assemblers;

[0009] 2. During the assembly process of the wire screw insert, there are requirements for the installation depth, installation torque and other parameters of the wire screw insert. The assembly is performed manually by the assemblers, and the assembly accuracy cannot be unified. For products with high assembly accuracy requirements, the manual assembly accuracy cannot meet the required standards, and the stability of product quality cannot be guaranteed;

[0010] 3. Manual assembly has high labor intensity and low production efficiency. It takes a lot of time to assemble a wire screw sleeve, and the economic benefits are not high.

[0011] In view of this, how to solve the problems existing in the existing assembly of wire thread inserts, such as reliance on the technical ability of assemblers, inconsistent assembly accuracy, poor product stability, low efficiency, and low economic benefits, has become a topic to be studied and solved by the present invention. Summary of the invention

[0012] The present invention provides an automatic locking and punching assembly device for a wire thread insert, and its purpose is to solve the problems existing in the existing assembly of wire thread inserts, such as reliance on the technical ability of assemblers, inconsistent assembly precision, poor product stability, low efficiency, and low economic benefits, so as to provide an automated device that does not rely on the technical ability of assemblers, has high assembly precision, high efficiency, and good economic benefits.

[0013] To achieve the above object, the present invention proposes an automatic locking and punching assembly device for wire thread inserts, which is used for automatic assembly of wire thread inserts on product threaded holes. The innovative point is that the locking and punching assembly device includes a multi-axis robot, a thread insert feeder, a workbench and a locking and punching combination module;

[0014] The multi-axis robot is composed of a plurality of mechanical arms and a plurality of robot joints, and the mechanical arm at the output end is provided with an output connection part;

[0015] The thread sleeve feeder is a feeding mechanism corresponding to the wire thread sleeve, and the thread sleeve feeder is located on the working path of the multi-axis robot;

[0016] The workbench is a work platform for clamping and positioning products, and the workbench is located on the working path of the multi-axis robot;

[0017] The locking and punching combination module is positioned and connected to the output connection part of the multi-axis robot through a mounting seat to form a linkage between the locking and punching combination module and the multi-axis robot; the locking and punching combination module includes a locking module, a punching tail module, and a detection module installed on the mounting seat; wherein,

[0018] The locking module can realize taking out the wire screw sleeve and locking the wire screw sleeve to the product, and the locking module comprises an intelligent tightening gun, a first connecting block, a batch rod, and a first linear driving mechanism; the intelligent tightening gun is installed on the first connecting block, and a tightening shaft connected to the batch rod for positioning is extended from the lower end of the intelligent tightening gun, and the driving end of the first linear driving mechanism is connected to the first connecting block through a buffer mechanism, and the first linear driving mechanism drives the first connecting block to move, and the first connecting block drives the intelligent tightening gun and the batch rod to move in the direction of the threaded hole. When the batch rod is against the threaded hole, a compression stroke in the direction of the threaded hole is formed between the driving end of the first linear driving mechanism and the first connecting block under the buffering compression action of the buffer mechanism, and the length of the compression stroke is greater than the radial length of the wire screw sleeve; a positioning sleeve is provided at the connection between the intelligent tightening gun and the batch rod, and the positioning sleeve is provided on the outer circumference of the batch rod, and the lower end of the positioning sleeve has a positioning portion that coincides with the axis of the tightening shaft and the batch rod, and the positioning portion is connected to the batch rod for positioning;

[0019] The punch tail module can realize the punching, suction and collection of the wire screw sleeve mounting handle. The punch tail module includes a second linear drive mechanism, a second connecting block, a punch handle and a material collection unit. The driving end of the second linear drive mechanism is connected to the second connecting block. The punch handle is installed on the second connecting block. A suction part is arranged at the lower end of the punch handle. The second linear drive mechanism drives the second connecting block to move. The second connecting block drives the punch handle to move toward the threaded hole. The material collection unit is located on the movement path of the punch handle.

[0020] The detection module includes a visual detection unit and a depth detection unit, which are used to detect the position of the screw sleeve hole on the product and the locking depth.

[0021] The relevant contents of the present invention are explained as follows:

[0022] 1. In the above technical scheme of the present invention, automated production is adopted, and multifunctional modules required for each process step in the wire screw assembly process are highly integrated, wherein the screw sleeve feeder automatically supplies the wire screw sleeve, the workbench stably and accurately clamps and positions the product, the locking module can realize taking the wire screw sleeve and locking the wire screw sleeve to the product, the tail punching module can realize the breaking, absorption and collection of the wire screw sleeve mounting handle, the detection module is used to detect the position of the screw sleeve hole on the product and the locking depth, with high integration and full-automatic production, and the positioning sleeve is used to keep the intelligent tightening shaft, the batch rod and the positioning sleeve concentric to avoid deflection when the batch rod is tightened and locked, and the buffer mechanism is used to make the batch rod, the wire screw sleeve and the threaded hole avoid the impact caused by other driving forces when they are driven when the locking module performs the tightening and locking operation, so as to avoid damage and deflection of each component, thereby ensuring the quality stability of product production.

[0023] 2. In the above technical solution, the lock punch assembly equipment also includes a glue supply device, which is used to apply thread locking agent to the surface of the wire thread insert, and the glue supply device includes a glue gun head, a glue supply tank, and a glue gun bracket.

[0024] 3. In the above technical solution, the buffer mechanism adopts a mechanical spring buffer unit or a pneumatic buffer unit. The buffer mechanism can adopt a mechanical buffer (spring) or a pneumatic buffer (pneumatic buffer rod), and use its elastic buffering capacity to avoid excessive resistance encountered by the locking rod before locking, so that the locking rod applies excessive downward force, thereby damaging the threaded hole and the product.

[0025] 4. In the above technical solution, the buffer mechanism adopts a mechanical spring buffer unit, and the buffer mechanism includes an upper connector, a connecting rod, a spring and a lower connector. A through hole is opened on the first connecting block. After the connecting rod passes through the through hole, the lower connector is installed at the lower end of the connecting rod, and the upper connector is installed at the upper end of the connecting rod. The spring is sleeved in the connecting rod, and the upper end of the spring is abutted against the lower surface of the upper connector, and the lower end of the spring is abutted against the upper surface of the first connecting block. Such a structure is easy to implement, simple to produce, and relatively low in cost. It also has a good effect of forming a compression stroke.

[0026] 5. In the above technical solution, the first linear drive mechanism includes a cylinder body, which is fixed on a fixed plate, and a downward buffer block is arranged on the fixed plate. For the buffer block, a corresponding buffer action block is arranged upward on the first connecting block. After the locking module is locked, the first connecting block that rebounds serves as a buffer protection, thereby increasing the stability of the equipment, increasing the service life of the equipment, and avoiding damage to the smart tightening gun and the screw rod.

[0027] 6. In the above technical solution, the visual detection unit includes a CCD camera and a lens assembly, and the depth detection unit is a distance sensor. The CCD camera, the lens assembly, and the distance sensor are located on one side of the mounting seat and are fixedly installed relative to the mounting seat. The distance sensor is located below the first connecting block. The distance sensor is used to detect the downward distance of the first connecting block. The visual detection unit is located in the middle of the locking module and the punching module, and has a better reference position. It is also to reduce the movement stroke of the locking module and the punching module, thereby completing efficient assembly operations.

[0028] 7. In the above technical solution, the locking module also includes a first guide rail, a first linear drive mechanism and the first guide rail are fixedly arranged relative to the mounting seat, the first connecting block is a connecting slider, and the first connecting block performs linear reciprocating motion along the first guide rail. The tail punching module also includes a second guide rail, a second linear drive mechanism and the second guide rail are fixedly arranged relative to the mounting seat, the second connecting block is a second connecting slider, and the second connecting block performs linear reciprocating motion along the second guide rail.

[0029] 8. In the above technical solution, the upper end of the positioning sleeve is positioned and connected to the first connecting block, and the positioning portion of the lower end of the positioning sleeve is a bearing, and the bearing sleeve is connected to the batch rod.

[0030] 9. In the above technical solution, the aggregate unit includes an aggregate mounting block, a push-pull cylinder, a push block, and an aggregate pipe. The aggregate mounting block has a vertically arranged through hole for the punch handle to pass through and a horizontally arranged blowing hole for blowing. The blowing hole blows in the extension direction of the through hole. The blowing hole is connected to an external blowing device. The push-pull cylinder and the aggregate pipe are installed below the through hole of the aggregate block. The telescopic end of the push-pull cylinder is connected to the push block. The push-pull cylinder drives the push block to reciprocate in the horizontal direction, so that the push block acts on the installation handle adsorbed at the tail end of the punch handle below the through hole of the aggregate block. Under the joint action of the push block and the atmospheric pressure in the blowing hole, the broken installation handle enters the waste box through the aggregate pipe.

[0031] 10. In the above technical solution, the thread insert feeder includes a feed tray, a direct vibration device, and a material dividing mechanism for automatic feeding. The number of the feed tray and the direct vibration device can be two to supply wire thread inserts of different specifications; the workbench includes a base and a clamping cylinder installed on the base, the clamping cylinder clamps the product, the workpiece is placed on the locking workbench, and the workpiece is fixed by the clamping cylinder.

[0032] 11. In the above technical solution, the intelligent tightening gun adopts the existing standardized tightening gun, which has a built-in motor, sensor and drive shaft, and the drive shaft is the tightening shaft.

[0033] 12. In the present invention, unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like 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, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] 13. In the present invention, the orientation or position relationship indicated by the terms "center", "upper", "lower", "axial", "bottom", "inner", "outer", etc. is based on the orientation or position assembly relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0035] 14. In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] Due to the application of the above scheme, the present invention has the following advantages and effects compared with the prior art:

[0037] 1. The above solution of the present invention does not rely too much on the skill level of the assemblers, and can be completed quickly and accurately through automated assembly, which greatly improves the quality stability and assembly accuracy of the product.

[0038] 2. The above scheme of the present invention adopts automated production, highly integrates the multifunctional processes of various process steps, has a short stroke, a short distance between the wire thread insert, the product and each module, and a high positioning accuracy, which can effectively reduce the time cycle for assembling the wire thread insert in the product. Since it can save labor costs and speed up the production cycle, it can bring considerable economic benefits to the enterprise.

[0039] 3. In the above scheme of the present invention, automated production is adopted, and the multifunctional modules required for each process step in the wire screw sleeve assembly process are highly integrated, and the structure of each functional module is improved and upgraded, wherein the screw sleeve feeder automatically supplies the wire screw sleeve, and the workbench stably and accurately clamps and positions the product, the locking module can realize the removal of the wire screw sleeve and the locking of the wire screw sleeve to the product, the tail punching module can realize the breaking, absorption and collection of the wire screw sleeve mounting handle, and the detection module is used to detect the position of the screw sleeve hole on the product and the locking depth. It has high integration and realizes full-automatic production. Through the positioning sleeve, the intelligent tightening shaft, the batch rod and the positioning sleeve are kept concentric to avoid deflection of the batch rod when tightening and locking. Through the buffer mechanism, when the locking module performs the tightening and locking operation, the batch rod, the wire screw sleeve and the threaded hole are protected from the impact caused by other driving forces when they are driven, thereby avoiding damage and deflection of each component, and ensuring the quality stability of product production. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Attached Figure 1 It is a schematic diagram of the overall structure of the automatic locking and punching assembly equipment of the wire thread insert according to the embodiment of the present invention;

[0041] Attached Figure 2 It is a schematic diagram of the linkage assembly of a multi-axis robot and a locking and punching combination module in the automatic locking and punching assembly equipment for wire screw inserts according to an embodiment of the present invention;

[0042] Attached Figure 3It is a three-dimensional schematic diagram of a locking and punching assembly module in the automatic locking and punching assembly equipment for wire thread inserts according to an embodiment of the present invention;

[0043] Attached Figure 4 It is a three-dimensional schematic diagram of a locking module in the automatic locking and punching assembly equipment of a wire screw insert according to an embodiment of the present invention;

[0044] Attached Figure 5 It is a front view of a locking module in the automatic locking and punching assembly equipment of a wire thread insert according to an embodiment of the present invention;

[0045] Attached Figure 6 For attachment Figure 5 Schematic diagram of the cross section along the AA direction;

[0046] Attached Figure 7 It is a three-dimensional schematic diagram of a tail punching module in the automatic locking and punching assembly equipment of a wire thread insert according to an embodiment of the present invention;

[0047] Attached Figure 8 It is a top view of the tail punching module in the automatic locking and punching assembly equipment of the wire thread insert according to the embodiment of the present invention;

[0048] Attached Fig. 9 For attachment Figure 8 Schematic diagram of the cross section along the BB direction;

[0049] Attached Fig.10 For attachment Fig. 9 A local enlarged schematic diagram in FIG.

[0050] Attached Fig.11 It is a three-dimensional schematic diagram of a product clamped on a workbench in the automatic locking and punching assembly equipment for wire thread inserts according to an embodiment of the present invention;

[0051] Attached Fig.12 It is a three-dimensional schematic diagram of a thread insert feeder in the automatic locking and punching assembly equipment of a wire thread insert according to an embodiment of the present invention;

[0052] Attached Fig.13 It is a three-dimensional schematic diagram of a glue supply device in an automatic locking and punching assembly device for a wire thread insert according to an embodiment of the present invention;

[0053] Attached Fig.14 It is an overall process flow chart of the automatic locking and punching assembly equipment of the wire thread insert according to the embodiment of the present invention;

[0054] Attached Fig.15 It is a locking action flow chart of the locking module in the automatic locking and punching assembly equipment of the wire screw insert according to the embodiment of the present invention;

[0055] Attached Fig.16 The present invention is a flowchart of the tail punching action of the tail punching module in the automatic locking and punching assembly equipment of the wire thread insert in the embodiment of the present invention.

[0056] The various parts of the above drawings are shown as follows:

[0057] 1. Multi-axis robot; 11. Robotic arm; 12. Robot joint; 13. Output connection part;

[0058] 2. Screw sleeve feeder; 21. Feeding tray; 22. Direct vibration device; 23. Material dividing mechanism;

[0059] 3. Workbench; 31. Base; 32. Clamping cylinder;

[0060] 4. Mounting seat;

[0061] 5. Locking module; 51. Intelligent tightening gun; 511. Tightening shaft; 52. First connecting block; 521. Through hole; 522. Buffering action block; 53. Batch rod; 54. First linear drive mechanism; 541. Cylinder body; 55. Buffering mechanism; 551. Upper connector; 552. Connecting rod; 553. Spring; 554. Lower connector; 56. Positioning sleeve; 561. Positioning part; 57. First guide rail; 58. Fixing plate; 581. Buffering block;

[0062] 6. Punch tail module; 61. Second linear drive mechanism; 62. Second connecting block; 63. Punch handle; 631. Material suction part; 64. Material collection unit; 641. Material collection mounting block; 6411. Perforation; 6412. Air blowing hole; 642. Push-pull cylinder; 643. Push block; 644. Material collection pipe; 65. Second guide rail;

[0063] 7. Detection module; 71. Visual detection unit; 711. CCD camera; 712. Lens assembly; 72. Depth detection unit; 721. Distance sensor;

[0064] 8. Glue supply device; 81. Glue gun head; 82. Glue supply tank; 83. Glue gun bracket. DETAILED DESCRIPTION

[0065] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0066] As attached Figure 1 As shown, an embodiment of the present invention proposes an automatic locking and punching assembly device for wire thread inserts, which is used for automatic assembly of wire thread inserts on threaded holes of products. The locking and punching assembly device includes a multi-axis robot 1, a thread insert feeder 2, a workbench 3 and a locking and punching combination module.

[0067] In the embodiment of the present invention, as shown in the attached Figure 1and attached Figure 2 As shown, the multi-axis robot 1 is composed of a plurality of robot arms 11 and a plurality of robot joints 12. The robot arms 11 at the output end are provided with an output connection portion 13. Fig.12 As shown, the thread insert feeder 2 is a feeding mechanism corresponding to the wire thread insert. The thread insert feeder 2 is located on the working path of the multi-axis robot 1. The thread insert feeder 2 includes a feeding tray 21, a direct vibration device 22, and a material dividing mechanism 23 for automatic feeding. The number of the feeding tray 21 and the direct vibration device 22 can be two to supply wire thread inserts of different specifications. Fig.11 As shown, the workbench 3 is a work platform for clamping and positioning products. The workbench 3 is located on the working path of the multi-axis robot 1. The workbench 3 includes a base 31 and a clamping cylinder 32 installed on the base 31. The clamping cylinder 32 clamps the product. The workpiece is placed on the locking workbench 3 and fixed by the clamping cylinder 32. Figure 2 As shown, the locking and punching assembly module is positioned and connected to the output connection part 13 of the multi-axis robot 1 through a mounting seat 4 to form a linkage between the locking and punching assembly module and the multi-axis robot 1; as shown in the attached Figure 3 As shown, the locking and punching combination module includes a locking module 5 , a punching module 6 , and a detection module 7 installed on a mounting seat 4 .

[0068] As attached Figure 4 , Attachment Figure 5 and attached Figure 6As shown, in an embodiment of the present invention, the locking module 5 can realize the removal of the wire screw sleeve and the locking of the wire screw sleeve to the product, and the locking module 5 includes an intelligent tightening gun 51, a first connecting block 52, a batch rod 53, and a first linear drive mechanism 54; the intelligent tightening gun 51 is installed on the first connecting block 52, and a tightening shaft 511 extending from the lower end of the intelligent tightening gun 51 is positioned and connected with the batch rod 53. The driving end of the first linear drive mechanism 54 is connected to the first connecting block 52 through a buffer mechanism 55. The first linear drive mechanism 54 drives the first connecting block 52 to move, and the first connecting block 52 drives the intelligent tightening gun 51 and the batch rod 53 to move toward the threaded hole. When the batch rod 53 is against the threaded hole, In the state, a compression stroke toward the threaded hole is formed between the driving end of the first linear drive mechanism 54 and the first connecting block 52 under the buffer compression action of the buffer mechanism 55, and the length of the compression stroke is greater than the radial length of the wire screw sleeve; a positioning sleeve 56 is provided at the connection between the intelligent tightening gun 51 and the batch rod 53, and the positioning sleeve 56 is sleeved on the outer circumference of the batch rod 53, and the lower end of the positioning sleeve 56 has a positioning portion 561 that coincides with the axis of the tightening shaft 511 and the batch rod 53, and the positioning portion 561 is positioned and connected to the batch rod 53; preferably, the upper end of the positioning sleeve 56 is positioned and connected to the first connecting block 52, and the positioning portion 561 at the lower end of the positioning sleeve 56 is a bearing, and the bearing is sleeved on the batch rod 53. The positioning sleeve 56 keeps the intelligent tightening shaft 511, the batch rod 53 and the positioning sleeve 56 concentric to avoid deflection of the batch rod 53 when tightening and locking.

[0069] Specifically, the buffer mechanism 55 adopts a mechanical spring 553 buffer unit or a pneumatic buffer unit. The buffer mechanism 55 can adopt mechanical buffer (spring 553) or pneumatic buffer (pneumatic buffer rod), and use its elastic buffering capacity to prevent the rod 53 from encountering too much resistance before locking, so that the rod 53 applies too much force downward, thereby damaging the threaded hole and the product. The buffer mechanism 55 adopts a mechanical spring 553 buffer unit. The buffer mechanism 55 includes an upper connector 551, a connecting rod 552, a spring 553 and a lower connector 554. A through hole 521 is opened on the first connecting block 52. After the connecting rod 552 passes through the through hole 521, the lower connector 554 is installed at the lower end thereof. The upper connector 551 is installed at the upper end of the connecting rod 552. The spring 553 is sleeved in the connecting rod 552. The upper end of the spring 553 is abutted against the lower surface of the upper connector 551, and the lower end of the spring 553 is abutted against the upper surface of the first connecting block 52. Such a structure is easy to implement, simple to produce, and relatively low in cost. It also has a good effect of forming a compression stroke.

[0070] When the first linear drive mechanism 54 drives to move downward, the lower end of the batching rod 53 with the wire screw sleeve is against the threaded hole of the product. At this time, the first connecting block 52, the intelligent tightening gun 51 and the batching rod 53 do not move. Since a buffer mechanism 55 is arranged between the first linear drive mechanism 54 and the first connecting block 52, the output end of the first linear drive mechanism 54 continues to move downward, forming a compression stroke in the direction of the product threaded hole. The locking module 5 performs a tightening and locking operation when the compression stroke is compressed to a length greater than or equal to the length of the wire screw sleeve. The tightening shaft 511 of the intelligent tightening gun 51 rotates to drive the batching rod 53 to rotate, and the batching rod 53 moves upward. The wire screw sleeve is then screwed into the threaded hole of the product. When locking, it does not need to be driven downward by an external driving force. The intelligent tightening gun 51 and the batch rod 53 can have a tendency to move toward the product threaded hole under the action of the buffer mechanism 55. When the batch rod 53 drives the wire screw sleeve to screw into the threaded hole, the compression stroke is slowly released, so that the wire screw sleeve on the batch rod 53 rotates deep along the thread of the threaded hole until the wire screw sleeve is locked in place, so that the batch rod 53, the wire screw sleeve, and the threaded hole can avoid the impact caused by other driving forces when they are under force, avoid damage and deflection of various components, and ensure the quality stability of product production.

[0071] More specifically, the first linear drive mechanism 54 includes a cylinder body 541, which is fixed on a fixed plate 58. A downward buffer block 581 is arranged on the fixed plate 58. For the buffer block 581, a corresponding buffer action block 522 is arranged upward on the first connecting block 52. After the locking module 5 is locked, the first connecting block 52 that rebounds serves as a buffer protection, thereby increasing the stability of the equipment, increasing the service life of the equipment, and avoiding damage to the smart tightening gun 51 and the screw rod 53.

[0072] As attached Figure 7 As shown, in an embodiment of the present invention, the punching tail module 6 can realize the breaking, suction and collection of the mounting handle of the wire screw sleeve. The punching tail module 6 includes a second linear drive mechanism 61, a second connecting block 62, a punch handle 63 and a material collection unit 64. The driving end of the second linear drive mechanism 61 is connected to the second connecting block 62, and the punch handle 63 is installed on the second connecting block 62. A suction part 631 is provided at the lower end of the punch handle 63. Preferably, the suction part 631 is a magnetic suction head, which magnetically absorbs the mounting handle of the wire screw sleeve made of steel; the second linear drive mechanism 61 drives the second connecting block 62 to move, and the second connecting block 62 drives the punch handle 63 to move toward the threaded hole, and the material collection unit 64 is located on the movement path of the punch handle 63.

[0073] As attached Figure 8 , Attachment Fig. 9 and attached Fig.10As shown, specifically, the material collecting unit 64 includes a material collecting installation block 641, a push-pull cylinder 642, a push block 643, and a material collecting pipe 645. The material collecting installation block 641 has a vertically arranged through hole 6411 for the punch handle 63 to pass through and a horizontally arranged blowing hole 6412 for blowing. The blowing hole 6412 blows in the extending direction of the through hole 6411. The blowing hole 6412 is connected to an external blowing device. The push-pull cylinder 642 and the material collecting pipe 645 are connected to the push-pull cylinder 642. The push block 643 is installed below the through hole 6411 of the aggregate block. The telescopic end of the push-pull cylinder 642 is connected to the push block 643. The push-pull cylinder 642 drives the push block 643 to reciprocate in the lateral direction, so that the push block 643 acts on the installation handle adsorbed at the tail end of the punch handle 63 below the through hole 6411 of the aggregate block. Under the combined action of the push block 643 and the atmospheric pressure in the blowing hole 6412, the broken installation handle enters the waste box (not shown in the attached drawings of the waste box) through the aggregate pipe 645.

[0074] In an embodiment of the present invention, the detection module 7 includes a visual detection unit 71 and a depth detection unit 72, which are used to detect the position of the screw sleeve hole on the product and the locking depth. Specifically, the visual detection unit 71 includes a CCD camera and a lens assembly 712, and the depth detection unit 72 is a distance sensor 721. The CCD camera, the lens assembly 712, and the distance sensor 721 are located on one side of the mounting seat 4 and are fixedly installed relative to the mounting seat 4. The distance sensor 721 is located below the first connecting block 52. The distance sensor 721 is used to detect the downward movement distance of the first connecting block 52. The visual detection unit 71 is located in the middle of the locking module 5 and the tail punching module 6, and has a better reference position, which is also to reduce the movement stroke of the locking module 5 and the tail punching module 6, thereby completing efficient assembly operations.

[0075] In the above embodiment, the locking module 5 also includes a first guide rail 57, a first linear drive mechanism 54 and a first guide rail 57 are fixedly arranged relative to the mounting seat 4, the first connecting block 52 is a connecting slider, and the first connecting block 52 performs linear reciprocating motion along the first guide rail 57. The tail punching module 6 also includes a second guide rail 65, a second linear drive mechanism 61 and a second guide rail 65 are fixedly arranged relative to the mounting seat 4, the second connecting block 62 is a connecting slider, and the second connecting block 62 performs linear reciprocating motion along the second guide rail 65. The first guide rail 57 and the second guide rail 65 can be directly fixed to the mounting seat 4. The intelligent tightening gun 51 adopts an existing standardized tightening gun with a built-in motor, sensor and drive shaft, and the drive shaft is the tightening shaft 511.

[0076] When using the wire thread insert automatic locking and punching assembly device of the embodiment of the present invention, taking the use of a six-axis robot as an example, as shown in the attached Fig.14 As shown, the overall process flow can be referred to as follows:

[0077] S110, the wire thread insert is supplied by the thread insert feeder 2 to a designated position to wait for use;

[0078] S120, the six-axis robot drives the locking module 5 to take the wire screw sleeve;

[0079] S130, the detection module 7 takes a photo of the product to determine the locking position of the threaded hole;

[0080] S140, the locking module 5 moves to the locking position of the workbench 3 to lock the product;

[0081] S150, after the locking is completed, the punching tail module 6 is moved to punch the installation handle of the wire screw sleeve;

[0082] S160, breaking off the caudal peduncle while sucking and collecting it;

[0083] S170, loop through the above steps S110 to S160 to lock the next position.

[0084] As attached Fig.15 As shown, in the above steps, the locking action flow of the locking module 5 can be decomposed and referred to as follows:

[0085] S210, the six-axis robot moves the locking module 5 with the wire screw sleeve removed to above the locking hole position (threaded hole);

[0086] S220, the tightening shaft 511 in the intelligent tightening gun 51 drives the wire screw insert rod 53 to rotate;

[0087] S230, the first linear drive mechanism 54 (lifting cylinder) drives the tightening shaft 511 and the screw rod 53 downward to identify the screw hole;

[0088] S240, after the hole recognition is completed, the screw sleeve continues to be locked downward;

[0089] S250, after the locking is completed, the distance sensor 721 detects the distance between the first connection block 52;

[0090] S260, confirming the final locking depth of the wire screw sleeve by judging the distance;

[0091] S270, the tightening shaft 511 is reversed and withdrawn from the wire screw sleeve, and at the same time, the first linear drive mechanism 54 (lifting cylinder) is reset.

[0092] As attached Fig.16 As shown, the tail punching action process of the tail punching module 6 can be decomposed and referred to as follows:

[0093] S310, the six-axis robot moves the tail punching module 6 to the top of the wire screw sleeve hole after locking;

[0094] S320, the second linear drive mechanism 61 (lifting cylinder) drives the punch handle 63 (a strong magnet is embedded at the end of the punch handle 63) to quickly punch downward and break the installation handle of the wire screw sleeve;

[0095] S330, the six-axis robot drives the lock-punch combination module to move downward for a certain distance (the moving distance is less than the depth of the screw hole);

[0096] S340, the magnet at the end of the punch handle 63 absorbs the broken mounting handle, and the second linear drive mechanism 61 (lifting cylinder) is reset and takes it out of the wire screw sleeve hole;

[0097] S350, the push-pull cylinder 642 is actuated to separate the mounting handle from the punch handle 63 magnet;

[0098] S360, ventilate the air hole 6412, blow the installation handle into the collecting pipe 645 and send it to the waste box.

[0099] In the above step S330, since the depth of the threaded hole is deeper than the wire thread sleeve, after the punch handle 63 punches the installation handle, the installation handle may fall down under the impact force and cannot be completely adsorbed by the magnetic head of the punch handle 63. Therefore, the second linear drive mechanism 61 (lifting cylinder) drives the punch handle 63 to move downward for a distance to ensure that it can be 100% magnetically attracted to the installation handle.

[0100] In another embodiment of the present invention, as shown in the attached Figure 1 As shown, the lock punch assembly device also includes a glue supply device 8, which is used to apply a thread locking agent to the surface of the wire thread sleeve, as shown in the attached Fig.13 As shown, the glue supply device 8 includes a glue gun head 81, a glue supply tank 82, and a glue gun bracket 83. It can also be used in conjunction with a glue supply pipeline and a glue barrel (the glue supply pipeline and the glue barrel are not shown in the accompanying drawings). The surface of the wire screw sleeve is coated with a thread locking agent to prevent the wire screw sleeve from loosening during use.

[0101] With respect to the above-mentioned embodiment, possible changes of the present invention are described as follows:

[0102] 1. The first linear drive mechanism 54 and the second linear drive mechanism 61 adopt one of the following mechanisms, and the push-pull cylinder 642 and the clamping cylinder 32 can also be replaced by the following scheme b or c:

[0103] (a) Cylinder, the piston rod of which serves as the working end of the linear drive mechanism;

[0104] (b) Linear motor, the rotor of which serves as the working end of the linear drive mechanism;

[0105] (c) A combination of a control motor and a lead screw mechanism, wherein the control motor is a stepper motor or a servo motor, the lead screw nut mechanism is a screw pair formed by a lead screw and a nut, the control motor is connected to the lead screw by transmission, and the nut serves as the working end of the linear drive mechanism.

[0106] 2. In the above embodiments, the multi-axis robot 1 can be a four-axis robot or a six-axis robot, as shown in the attached Figure 2 As shown, the locking and punching combination module is connected to the six-axis robot to achieve linkage; the six-axis robot has automatic control operation and programmable functions, and can realize automatic detection, locking of braces, and punching and suction of installation handles.

[0107] 3. In the above embodiments, the first guide rail 57 and the second guide rail 65 can be directly fixed on the mounting seat 4, or respective plates for fixed installation can be provided in the locking module 5 and the tail punching module 6.

[0108] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A wire thread insert automatic locking and punching assembly device, used for automatic assembly of wire thread inserts on product threaded holes, characterized by: The lock punch assembly equipment comprises a multi-axis robot (1), a screw sleeve feeder (2), a workbench (3) and a lock punch assembly module; The multi-axis robot (1) is composed of a plurality of robot arms (11) and a plurality of robot joints (12), and the robot arm (11) at the output end is provided with an output connection portion (13); The thread insert feeder (2) is a feeding mechanism arranged corresponding to the wire thread insert, and the thread insert feeder (2) is located on the working path of the multi-axis robot (1); The workbench (3) is a work platform used for clamping and positioning products, and the workbench (3) is located on the working path of the multi-axis robot (1); The locking and punching combination module is positioned and connected to the output connection part (13) of the multi-axis robot (1) through a mounting seat (4) to form a linkage between the locking and punching combination module and the multi-axis robot (1); the locking and punching combination module includes a locking module (5), a punching tail module (6), and a detection module (7) installed on the mounting seat (4); wherein, The locking module (5) comprises an intelligent tightening gun (51), a first connecting block (52), a screw rod (53), and a first linear drive mechanism (54); the intelligent tightening gun (51) is mounted on the first connecting block (52); a tightening shaft (511) extending from the lower end of the intelligent tightening gun (51) and being positioned and connected to the screw rod (53); a driving end of the first linear drive mechanism (54) is connected to the first connecting block (52) via a buffer mechanism (55); the first linear drive mechanism (54) drives the first connecting block (52) to move, and the first connecting block (52) drives the intelligent tightening gun (51) and the screw rod (53) to move in a direction toward the threaded hole. When the screw rod (53) is pressed against the threaded hole, a compression stroke is formed between the driving end of the first linear drive mechanism (54) and the first connecting block (52) in the direction of the threaded hole under the buffer compression action of the buffer mechanism (55), and the length of the compression stroke is greater than the radial length of the wire screw sleeve; a positioning sleeve (56) is provided at the connection between the intelligent tightening gun (51) and the screw rod (53), the positioning sleeve (56) is sleeved on the outer circumference of the screw rod (53), and the lower end of the positioning sleeve (56) has a positioning portion (561) that coincides with the axis of the tightening shaft (511) and the screw rod (53), and the positioning portion (561) is connected to the screw rod (53) in a positioning manner; The punch tail module (6) comprises a second linear drive mechanism (61), a second connecting block (62), a punch handle (63) and a material collecting unit (64); the driving end of the second linear drive mechanism (61) is connected to the second connecting block (62); the punch handle (63) is mounted on the second connecting block (62); a material suction portion (631) is provided at the lower end of the punch handle (63); the second linear drive mechanism (61) drives the second connecting block (62) to move; the second connecting block (62) drives the punch handle (63) to move toward the threaded hole; and the material collecting unit (64) is located on the movement path of the punch handle (63); The detection module (7) comprises a visual detection unit (71) and a depth detection unit (72).

2. The automatic locking and punching assembly equipment for wire thread inserts according to claim 1 is characterized in that: The lock punch assembly equipment also includes a glue supply device (8), which is used to apply a thread locking agent to the surface of the wire thread sleeve, and the glue supply device (8) includes a glue gun head (81), a glue supply tank body (82), and a glue gun bracket (83).

3. The automatic locking and punching assembly equipment for wire thread inserts according to claim 1 is characterized in that: The buffer mechanism (55) adopts a mechanical spring (553) buffer unit or a pneumatic buffer unit.

4. The automatic locking and punching assembly equipment for wire thread inserts according to claim 1 is characterized in that: The buffer mechanism (55) adopts a mechanical spring (553) buffer unit. The buffer mechanism (55) includes an upper connector (551), a connecting rod (552), a spring (553) and a lower connector (554). A through hole (521) is provided on the first connecting block (52). After the connecting rod (552) passes through the through hole (521), the lower connector (554) is installed at the lower end thereof. The upper connector (551) is installed at the upper end of the connecting rod (552). The spring (553) is sleeved in the connecting rod (552). The upper end of the spring (553) abuts against the lower surface of the upper connector (551), and the lower end of the spring (553) abuts against the upper surface of the first connecting block (52).

5. The automatic locking and punching assembly equipment for wire thread inserts according to claim 1 is characterized in that: The first linear drive mechanism (54) comprises a cylinder body (541), the cylinder body (541) being fixed on a fixed plate (58), a downward buffer block (581) being arranged on the fixed plate (58), and a corresponding buffer action block (522) being arranged upward on the first connecting block (52) in relation to the buffer block (581).

6. The automatic locking and punching assembly equipment for wire thread inserts according to claim 1 is characterized in that: The visual detection unit (71) is located in the middle of the locking module (5) and the tail punching module (6); the visual detection unit (71) comprises a CCD camera (711) and a lens assembly (712); the depth detection unit (72) is a distance sensor (721); the CCD camera (711), the lens assembly (712) and the distance sensor (721) are located on one side of the mounting seat (4) and are fixedly installed relative to the mounting seat (4); the distance sensor (721) is located below the first connecting block (52); and the distance sensor (721) is used to detect the downward movement distance of the first connecting block (52).

7. The automatic locking and punching assembly equipment for wire thread inserts according to claim 1 is characterized in that: The locking module (5) further comprises a first guide rail (57), a first linear drive mechanism (54) and the first guide rail (57) are fixedly arranged relative to the mounting seat (4), the first connecting block (52) is a connecting slide block, and the first connecting block (52) performs linear reciprocating motion along the first guide rail (57); the tail punching module (6) further comprises a second guide rail (65), a second linear drive mechanism (61) and the second guide rail (65) are fixedly arranged relative to the mounting seat (4), the second connecting block (62) is two connecting slide blocks, and the second connecting block (62) performs linear reciprocating motion along the second guide rail (65).

8. The automatic locking and punching assembly equipment for wire thread inserts according to claim 1 is characterized in that: The upper end of the positioning sleeve (56) is positioned and connected to the first connecting block (52), and the positioning portion (561) at the lower end of the positioning sleeve (56) is a bearing, which is sleeved on the batching rod (53).

9. The automatic locking and punching assembly equipment for wire thread inserts according to claim 1 is characterized in that: The material collecting unit (64) comprises a material collecting installation block (641), a push-pull cylinder (642), a push block (643), and a material collecting pipe (644). The material collecting installation block (641) has a vertically arranged through hole (6411) for the punch handle (63) to pass through, and a horizontally arranged blowing hole (6412) for blowing air. The blowing hole (6412) blows in the extending direction of the through hole (6411). 6412) is connected to an external blowing device, a push-pull cylinder (642) and a collection pipe (644) are installed below the aggregate block through-hole (6411), the telescopic end of the push-pull cylinder (642) is connected to the push block (643), and the push-pull cylinder (642) drives the push block (643) to reciprocate in the lateral direction, so that the push block (643) acts on the installation handle adsorbed at the tail end of the punch handle (63) below the aggregate block through-hole (6411).

10. The automatic locking and punching assembly equipment for wire thread inserts according to claim 1 is characterized in that: The screw sleeve feeder (2) comprises a feed tray (21), a direct vibration device (22), and a material distribution mechanism (23); the workbench (3) comprises a base (31) and a clamping cylinder (32) mounted on the base (31).

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