Automatic Tapping Machine

Abstract

The present invention discloses an automatic tapping machine, including a tapping machine feeding device, an automatic tapping device and an internal thread detection device; the tapping machine feeding device includes: a feeding frame, a hopper, a step feeding mechanism and a feeding transmission mechanism; the feeding frame is used to set the hopper, the step feeding mechanism and the feeding transmission mechanism; the hopper is arranged on the feeding frame, and is used to load the screws to be tapped; the step feeding mechanism includes a feeding assembly and a feeding drive, the feeding assembly is arranged in the hopper, the feeding drive is arranged on the feeding frame, and the driving end of the feeding drive is connected to and drives the feeding assembly to move the screws in the hopper upward; the feeding transmission mechanism is arranged on the feeding frame and is located below the blanking port of the feeding assembly, and is used to transmit the screws to the automatic tapping device. This scheme realizes the feeding, tapping, transportation and internal thread detection of screws through the mutual cooperation of various devices, and the whole process is automated without manual participation, thereby improving the tapping processing efficiency and ensuring the tapping efficiency.

Description

Technical Field

[0001] The invention relates to the field of tapping machines, and more particularly to an automatic tapping machine. Background Art

[0002] Tapping machine is a kind of mechanical processing equipment that processes internal threads, screws or threaded buttons on the inner side of various parts with through holes or blind holes of different specifications, such as machine housings, equipment end faces, nuts, flanges, etc. Tapping machine is also called tapping machine, thread tapping machine, thread tapping machine, automatic tapping machine, etc.

[0003] The existing tapping machines have a low degree of automation, and many links require manual participation, which affects the tapping efficiency and processing accuracy of the screws.

[0004] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an automatic tapping machine.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] An automatic tapping machine, comprising a tapping machine feeding device, an automatic tapping device and an internal thread detection device;

[0008] The feeding device of the tapping machine comprises: a feeding frame, a hopper, a step feeding mechanism and a feeding transmission mechanism; the feeding frame is used to set the hopper, the step feeding mechanism and the feeding transmission mechanism;

[0009] The hopper is arranged on the feeding frame and is used to load the screws to be tapped; the step feeding mechanism includes a feeding assembly and a feeding drive, the feeding assembly is arranged in the hopper, the feeding drive is arranged on the feeding frame, and the driving end of the feeding drive is connected to and drives the feeding assembly to move the screws in the hopper upward; the feeding transmission mechanism is arranged on the feeding frame and is located below the blanking port of the feeding assembly, and is used to transmit the screws to the automatic tapping device;

[0010] The automatic tapping device comprises a tapping machine frame, and a conveying mechanism, a tapping fixing mechanism and a tapping mechanism arranged on the tapping machine frame, wherein the tapping mechanism and the conveying mechanism are respectively arranged on both sides of the tapping fixing mechanism; the tapping mechanism comprises a tapping column, a tapping mounting plate arranged on the top of the tapping column, and a tapping driving member and a tapping drill bit arranged below the tapping mounting plate, the tapping driving member is connected to the tapping drill bit by transmission, drives the tapping drill bit to rotate for tapping, and the tapping column is arranged on the tapping machine frame; the tapping fixing mechanism comprises a tapping fixing base plate, and a fixing seat is arranged on the side of the tapping fixing base plate facing the tapping mechanism, and the fixing seat is located directly below the tapping drill bit; the conveying mechanism comprises a transmission base and a conveying manipulator, the conveying manipulator is arranged on the transmission base, and is used to convey the screws to be tapped and place them on the fixing seat for fixing, and convey the tapped screws to the internal thread detection device;

[0011] The internal thread detection device includes a limiting mechanism, a detection mechanism and a storage mechanism, and the detection mechanism and the storage mechanism are respectively arranged on both sides of the limiting mechanism; the limiting mechanism includes a limiting vertical plate and a limiting track, the limiting track is arranged at the upper end of the limiting vertical plate, the lower end of the limiting vertical plate is fixed, and the middle part of the limiting track is provided with a limiting groove for placing the screw to be detected; the detection mechanism includes a detection vertical plate, a horizontal driving member, a detection mounting plate, a vertical driving member and a detection shaft, the bottom end of the detection vertical plate is fixed, the horizontal driving member is arranged at the top end of the detection vertical plate, the driving end of the horizontal driving member is connected to the detection mounting plate, the vertical driving member is arranged on the detection mounting plate, the driving end of the vertical driving member is connected to the detection shaft, and the detection shaft is opposite to the limiting groove, for detecting the internal thread of the screw after tapping; the storage mechanism includes a storage box for storing screws, and the storage box is arranged adjacent to the limiting vertical plate and below the side of the detection shaft.

[0012] Furthermore, the hopper includes two side baffles arranged opposite to each other, and a material guide plate arranged between the two side baffles, the material guide plate is arranged downwardly inclined and the end thereof stops at the feeding assembly, and the material guide plate is used to guide the material to the periphery of the feeding assembly.

[0013] Furthermore, the feeding assembly includes a cache component and a pushing component, both ends of the cache component are respectively fixed to the two side baffles, the pushing component is arranged on the side of the cache component facing the guide plate, and the pushing component is tightly arranged with the cache component, and the pushing component is connected to the driving end of the feeding drive component.

[0014] Furthermore, the stepped feeding mechanism includes at least two feeding components and a feeding push plate, and the feeding components are arranged adjacent to each other in a stepped shape from low to high, and the pushing components of different feeding components are all connected to the driving end of the feeding drive member; the bottom ends of the pushing components are all connected to the upper surface of the feeding push plate, and the lower surface of the feeding push plate is connected to the driving end of the feeding drive member.

[0015] Furthermore, the fixing seat includes two supporting parts arranged opposite to each other, and the two supporting parts enclose a fixing hole, and the fixing hole is used to fix the screw to be processed; the supporting part includes a connecting part and a supporting part, one end of the connecting part is fixedly connected to the side of the tapping fixing base plate, and the other end of the connecting part is connected to the supporting part, and a limiting protrusion is arranged on the surface of the supporting part.

[0016] Furthermore, the automatic tapping device includes at least two tapping mechanisms, and a plurality of the tapping mechanisms are arranged side by side on the tapping machine frame.

[0017] Furthermore, it also includes a debris cleaning device, which is arranged below the automatic tapping device and is used to collect and transport tapping debris.

[0018] Further, the limit track includes two track bars and a limit connector disposed opposite to each other, the two ends of the limit connector are respectively connected to the two track bars, and the opposite sides of the two track bars are provided with step limit parts, and the opposite step limit parts constitute the limit groove;

[0019] Furthermore, the position-limiting connector includes a connecting body and two connecting parts perpendicular to the connecting body, and the connecting parts are respectively arranged at two ends of the connecting body.

[0020] Furthermore, the detection mounting plate includes a transverse mounting portion and a vertical mounting portion, the transverse mounting portion and the vertical mounting portion are perpendicular to each other to form an L-shaped detection mounting plate, the transverse mounting portion is connected to the driving end of the transverse driving member, and the vertical driving member is arranged on the vertical mounting portion.

[0021] The beneficial effects of the present invention compared with the prior art are as follows: an automatic tapping machine provided by the present invention realizes automatic loading, tapping, transportation and internal thread detection of screws through the cooperation of a tapping machine feeding device, an automatic tapping device and an internal thread detection device. The whole process is automated without manual intervention, thereby improving the tapping processing efficiency while ensuring the tapping processing efficiency.

[0022] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a specific embodiment of the automatic tapping machine of the present invention;

[0024] Figure 2 It is a structural schematic diagram of a specific embodiment of a feeding device for a tapping machine of the present invention;

[0025] Figure 3 It is a structural schematic diagram of a specific embodiment of a feeding device for a tapping machine of the present invention;

[0026] Figure 4 It is a structural schematic diagram of a specific embodiment of a feeding device for a tapping machine of the present invention;

[0027] Figure 5 It is an assembly diagram of a specific embodiment of the automatic tapping device of the present invention;

[0028] Figure 6 It is a structural schematic diagram of a specific embodiment of the tapping mechanism of the automatic tapping device of the present invention;

[0029] Figure 7 It is a structural schematic diagram of a specific embodiment of a conveying mechanism and a tapping fixing mechanism of an automatic tapping device of the present invention;

[0030] Figure 8 It is a structural schematic diagram of a specific embodiment of the internal thread detection device of the present invention;

[0031] Fig. 9 It is a structural side view of a specific embodiment of the internal thread detection device of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0039] refer to Figure 1-9 The present invention proposes an automatic tapping machine, including a tapping machine feeding device 100, an automatic tapping device 200 and an internal thread detection device 400. The tapping machine feeding device 100, the automatic tapping device 200 and the internal thread detection device 400 cooperate with each other to realize automatic feeding, tapping, transportation and internal thread detection of screws. The whole process is automated without manual intervention, which improves the tapping processing efficiency while ensuring the tapping processing efficiency.

[0040] refer to Figure 2-4 The feeding device 100 of the tapping machine includes: a feeding frame 110, a hopper 130, a step feeding mechanism 120 and a feeding transmission mechanism 140. A feeding device 100 of the tapping machine of the present solution is provided with a step feeding mechanism 120 in the hopper 130, and the materials in the hopper 130 are automatically pushed up in sequence by the step feeding mechanism 120, and dropped into the feeding transmission mechanism 140 through the dropping opening, and then transferred to the next station for further processing by the feeding transmission mechanism 140, which is fully automatic and does not require human intervention, thereby improving the feeding efficiency of the tapping machine and reducing the processing risk.

[0041] The feeding frame 110 is used to set the hopper 130, the step feeding mechanism 120 and the feeding transmission mechanism 140 to ensure the stable operation of the tapping machine feeding device 100.

[0042] In an alternative embodiment, reference Figure 3 The feeding frame 110 is composed of a plurality of support rods. A movable base 111 is arranged at the bottom of the feeding frame 110, and a feeding drive 122 is arranged on the movable base 111. The movable base 111 is arranged at the bottom of the feeding frame 110, and the movable base 111 can slide relative to the feeding frame 110 to adapt to the setting position of the feeding drive 122.

[0043] The hopper 130 is disposed on the loading frame 110 and is used for loading materials. In this embodiment, the materials are screw materials to be tapped.

[0044] In an alternative embodiment, reference Figure 3 The hopper 130 includes two side baffles 131 disposed opposite to each other, and a guide plate 132 disposed between the two side baffles 131. The guide plate 132 is disposed downwardly obliquely and its end stops at the feeding assembly 121. The guide plate 132 disposed downwardly obliquely is used to guide the material to the periphery of the feeding assembly 121, and the feeding drive member 122 drives the pushing component 1212 of the feeding assembly 121 to move up and down, and push the material to the top surface of the buffer component 1211. When in use, the material rolls downward along the guide plate 132 to the side of the pushing component 1212 under the action of its own gravity, and directly enters the top surface of the pushing component 1212 when the pushing component 1212 moves downward to the end of the guide plate 132 or below the end, and then enters the top surface of the pushing component 1212.

[0045] The step feeding mechanism 120 includes a feeding assembly 121 and a feeding drive 122. The feeding assembly 121 is arranged in the hopper 130, and the feeding drive 122 is arranged in the feeding frame 110. The driving end of the feeding drive 122 is connected to and drives the feeding assembly 121 to move the material in the hopper 130 upward.

[0046] In an alternative embodiment, reference Figure 3 The feeding assembly 121 includes a buffer component 1211 and a push component 1212. Both ends of the buffer component 1211 are fixed to the two side baffles 131 respectively. The push component 1212 is arranged on the side of the buffer component 1211 facing the guide plate 132, and the push component 1212 is closely arranged with the buffer component 1211. The push component 1212 is connected to the driving end of the feeding driving member 122. The push component 1212 moves downward in the hopper 130 so that a certain amount of material stays on its top surface, and then moves upward to be flush with or obliquely above the top surface of the buffer component 1211. At this time, the material further rolls to the top surface of the adjacent buffer component 1211.

[0047] Among them, the top surfaces of the buffer component 1211 and the pushing component 1212 are inclined downward toward the material drop port to ensure that the materials on the top surfaces of the buffer component 1211 and the pushing component 1212 will roll toward the material drop port under their own gravity, thereby automatically completing the loading.

[0048] In an optional embodiment, the step feeding mechanism 120 includes at least two feeding assemblies 121, which are arranged adjacent to each other in a step-like manner from low to high, and the pushing parts 1212 of different feeding assemblies 121 are all connected to the driving end of the feeding driving member 122. Multiple feeding assemblies 121 are arranged adjacent to each other, and the materials are pushed from the lower feeding assemblies 121 to the higher feeding assemblies 121 in turn, and step-by-step feeding is realized, and finally the materials fall from the drop opening. For details, refer to Figure 4The step feeding mechanism 120 of this embodiment includes three feeding components 121, and the three feeding components 121 are arranged in a step-like manner from low to high.

[0049] In an alternative embodiment, reference Figure 3 The step feeding mechanism 120 also includes a feeding push plate 123, the bottom ends of multiple pushing components 1212 are connected to the upper surface of the feeding push plate 123, and the lower surface of the feeding push plate 123 is connected to the driving end of the feeding driving member 122. Through the feeding push plate 123, this scheme synchronously drives multiple feeding push plates 123 through the feeding driving member 122 to efficiently complete the feeding.

[0050] The material feeding transmission mechanism 140 is disposed on the feeding frame 110 and is located below the material drop opening of the feeding assembly 121 , and is used to transmit the material to the next station of the tapping machine.

[0051] In an optional embodiment, the feeding transmission mechanism 140 includes a transmission column 141 and a hollow transmission belt 142. The transmission column 141 is fixed to the feeding frame 110, and the hollow transmission belt 142 is arranged at the top of the transmission column 141, and is used to transmit the material falling into the middle of the hollow transmission belt 142. In this embodiment, the material is a screw to be tapped, and the diameter of the screw nut is larger than the screw body. When the screw falls on the hollow transmission belt 142, the screw body passes through the hollow position of the hollow transmission belt 142 and directly and stably transmits the corresponding screw.

[0052] In an alternative embodiment, reference Figure 3 In this embodiment, a tapping machine feeding device 100 also includes a blanking mechanism 150, which includes a fixed component 151, a blanking cylinder 153 and a blanking baffle 152. The fixed component 151 is fixed to the side baffle 131, and the blanking cylinder 153 is arranged on the fixed component 151. The telescopic rod of the blanking cylinder 153 is connected to the blanking baffle 152, and the blanking baffle 152 is directly opposite to the blanking port of the feeding component 121.

[0053] Among them, the blanking cylinder 153 pushes the blanking baffle 152 forward and backward to change the distance between the blanking baffle 152 at the blanking port and the buffer component 1211 closest to the blanking port to adjust the posture of the material and the timing of the material falling, ensuring that when the material, that is, the screw falls, the screw body faces downward to be stuck in the hollow conveyor belt 142.

[0054] A tapping machine feeding device 100 provided in the present embodiment is provided with a step feeding mechanism 120 in the hopper 130, which automatically pushes the material in the hopper 130 upwards through the step feeding mechanism 120, and drops the material through a drop opening onto a feeding transmission mechanism 140, which transmits the material to the next workstation for further processing. The entire process is carried out automatically without human intervention, thereby improving the feeding efficiency of the tapping machine and reducing processing risks.

[0055] refer to Figure 5-7 In this embodiment, an automatic tapping device 200 includes a tapping frame, a conveying mechanism 220, a tapping fixing mechanism 230 and a tapping mechanism 210 arranged on the tapping frame, and the tapping mechanism 210 and the conveying mechanism 220 are respectively arranged on both sides of the tapping fixing mechanism 230. By respectively arranging the tapping mechanism 210 and the conveying mechanism 220 on both sides of the tapping fixing mechanism 230, the conveying mechanism 220 conveys the screw to the tapping fixing mechanism 230 for fixing, and the tapping mechanism 210 performs tapping processing on the screw on the tapping fixing mechanism 230, thereby realizing automatic tapping of the screw, with a simple, practical and convenient structure, no manual participation in the whole process, high tapping efficiency and high processing safety.

[0056] refer to Figure 6 The tapping mechanism 210 includes a tapping column 211, a tapping mounting plate 212 arranged at the top of the tapping column 211, and a tapping drive 213 and a tapping drill bit 214 arranged below the tapping mounting plate 212. The tapping drive 213 is transmission-connected to the tapping drill bit 214 to drive the tapping drill bit 214 to rotate for tapping. The tapping column 211 is arranged on the tapping machine frame, and the tapping drive 213 drives the tapping drill bit 214 to rotate for tapping.

[0057] In an optional embodiment, the tapping drive 213 is a servo motor, and the drive shaft of the servo motor is rotatably connected to the tapping drill 214, and drives the tapping drill 214 to rotate to tap the screw. The servo motor can convert a voltage signal into a torque and a speed to drive a control object, and has the characteristics of a small electromechanical time constant and high linearity.

[0058] In an optional embodiment, an automatic tapping device 200 of this embodiment includes at least two tapping mechanisms 210. Multiple tapping mechanisms 210 are arranged side by side on a tapping machine frame, and synchronous tapping processing can be performed to improve the tapping processing efficiency.

[0059] refer to Figure 5 The tapping fixing mechanism 230 includes a tapping fixing base plate 231 . A fixing seat 232 is provided on a side of the tapping fixing base plate 231 facing the tapping mechanism 210 . The fixing seat 232 is located directly below the tapping drill bit 214 .

[0060] The fixing seat 232 includes two supporting parts 232a disposed opposite to each other. The two supporting parts 232a enclose a fixing hole for fixing the screw to be processed.

[0061] like Figure 7As shown, the supporting component 232a is a Z-shaped structure. Specifically, the supporting component 232a includes a connecting portion and a supporting portion. One end of the connecting portion is fixedly connected to the side of the tapping fixing base plate 231, and the other end of the connecting portion is connected to the supporting portion. The supporting portion is used to support and fix the screws to be processed. A limiting protrusion is provided on the surface of the supporting portion. The limiting protrusion is used to limit the screws to be processed to ensure that the screws will not move during processing, thereby ensuring the processing quality.

[0062] The transport mechanism 220 includes a transport base 222 and a transport robot 221 . The transport robot 221 is disposed on the transport base 222 and is used to transport materials and is placed on a fixing base 232 for fixing.

[0063] refer to Figure 7 The transmission base 222 includes a conveying slide rail 222a and a conveying slide plate 222b. The conveying slide plate 222b is slidably set on the conveying slide rail 222a. The conveying slide plate 222b can slide along the conveying slide rail 222a and convey the handling robot 221 set on the conveying slide plate 222b, ensuring that the handling robot 221 can normally carry materials and place them at the designated position.

[0064] In an optional embodiment, a collecting mechanism is provided below the tapping mechanism 210, and the collecting mechanism is used to collect debris generated by the tapping process. The processing debris falls into the collecting mechanism under the action of gravity. The collecting mechanism collects the debris to prevent the processing debris from flying around and improve the cleanliness of the processing environment.

[0065] Specifically, the collecting mechanism includes a collecting funnel and a collecting bin. The collecting funnel is arranged directly below the tapping mechanism 210 and is used to collect processing debris. The opening of the collecting funnel faces the collecting bin. The processing debris is collected by the collecting funnel and temporarily stored in the collecting bin to ensure a clean processing environment.

[0066] An automatic tapping device 200 of the present embodiment, by respectively arranging a tapping mechanism 210 and a conveying mechanism 220 on both sides of a tapping fixing mechanism 230, the conveying mechanism 220 conveys the screws to the tapping fixing mechanism 230 for fixing, and the tapping mechanism 210 performs tapping processing on the screws on the tapping fixing mechanism 230, thereby realizing automatic tapping of the screws. The structure is simple, practical and convenient, no manual participation is required throughout the process, the tapping efficiency is high, and the processing safety is high.

[0067] refer to Figure 8 and 9In this embodiment, an internal thread detection device 400 includes a limiting mechanism 420, a detection mechanism 410 and a storage mechanism 430. The detection mechanism 410 and the storage mechanism 430 are respectively arranged on both sides of the limiting mechanism 420. The screw to be detected is limited by the limiting mechanism 420, and under the drive of the horizontal driving member 412 and the vertical driving member 414, the detection shaft 415 is inserted into the internal screw hole of the screw to be inspected to detect whether the inner diameter of the internal screw hole of the screw meets the requirements. After the detection fails, the screw that fails the detection is placed in the storage mechanism 430 by a robot arm to complete the screw internal thread detection. The whole process is automated, efficient and fast, and there is no error caused by human detection, thereby improving the detection accuracy.

[0068] refer to Figure 8 The limiting mechanism 420 includes a limiting vertical plate 421 and a limiting track. The limiting track is arranged at the upper end of the limiting vertical plate 421, and the lower end of the limiting vertical plate 421 is fixed. A limiting groove for placing the screw to be detected is arranged in the middle of the limiting track. The lower end of the limiting vertical plate 421 is fixed on the platform and is used to set other mechanisms to ensure that the state of the screw is stable during inspection and to ensure the detection accuracy. The limiting track arranged at the upper end of the limiting vertical plate 421 is used to transmit and temporarily limit the screw. The screw is transmitted to the limiting track of the limiting mechanism 420 after being processed by the previous workstation, and the screw on the limiting track is quickly detected by the detection mechanism 410, thereby improving the detection efficiency of the internal thread of the screw.

[0069] refer to Figure 8 and 9 The limiting track includes two track bars 422 and a limiting connector 423 disposed opposite to each other. The two ends of the limiting connector 423 are respectively connected to the two track bars 422. The opposite sides of the two track bars 422 are provided with step limiting parts, and the step limiting parts disposed opposite to each other form a limiting groove. In this embodiment, one of the track bars 422 and the limiting vertical plate 421 are an integrated structure. The track bar 422 and the limiting vertical plate 421 of the integrated structure have stronger strength and better structural stability.

[0070] refer to Figure 8 The limiting connector 423 includes a connecting body 423a and two connecting parts 423b perpendicular to the connecting body 423a. The connecting parts 423b are respectively arranged at both ends of the connecting body 423a. The connecting body 423a and the connecting parts 423b form a "["-shaped structure, which improves the connection stability of the limiting connector 423.

[0071] This embodiment includes at least two position-limiting connectors 423 , and two track bars 422 are connected to form a position-limiting track through the at least two position-limiting connectors 423 , thereby ensuring the structural stability of the position-limiting track.

[0072] refer to Figure 8 and9 The detection mechanism 410 includes a detection vertical plate 411, a horizontal driving member 412, a detection mounting plate 413, a vertical driving member 414 and a detection shaft 415. The bottom end of the detection vertical plate 411 is fixed, the horizontal driving member 412 is arranged at the top of the detection vertical plate 411, the driving end of the horizontal driving member 412 is connected to the detection mounting plate 413, the vertical driving member 414 is arranged on the detection mounting plate 413, the driving end of the vertical driving member 414 is connected to the detection shaft 415, and the detection shaft 415 is opposite to the limit groove. Among them, the horizontal driving member 412 drives the detection mounting plate 413 forward and backward so that the detection shaft 415 is located directly above the inner screw hole of the screw to be detected, and the vertical driving member 414 drives the detection shaft 415 to move up and down, so that the detection shaft 415 moves down into the inner screw hole of the screw to be detected, and detects whether the inner screw hole of the screw meets the requirements. Specifically, the detection shaft 415 is a conical shaft body with an enlarged diameter component. The aperture of the inner screw hole can be calculated by obtaining the depth of the detection shaft 415 inserted into the inner screw hole, and further judged whether the inner screw hole meets the requirements.

[0073] Among them, the horizontal driving member 412 and the vertical driving member 414 are both driving cylinders. The horizontal driving member 412 drives the detection mounting plate 413 forward and backward so that the detection shaft 415 is located directly above the inner screw hole of the screw to be detected. The vertical driving member 414 drives the detection shaft 415 to move up and down so that the detection shaft 415 moves down into the inner screw hole of the screw to be detected, and detects whether the inner screw hole of the screw meets the requirements.

[0074] The detection mounting plate 413 includes a horizontal mounting portion 413b and a vertical mounting portion 413a. The horizontal mounting portion 413b and the vertical mounting portion 413a are perpendicular to each other to form an L-shaped detection mounting plate 413. The horizontal mounting portion 413b is connected to the driving end of the horizontal driving member 412, and the vertical driving member 414 is arranged on the vertical mounting portion 413a.

[0075] refer to Figure 8 The storage mechanism 430 includes a storage box 431 for storing screws. The storage box 431 is arranged at the lower side of the detection axis 415, adjacent to the limiting plate 421. After the detection is completed, the screws that pass the detection are transported to the next workstation along the limiting guide rail. If the detection is unsuccessful, the robot on the processing platform will grab the screws and put them in the storage box 431, so as to better manage the defective / scrap screw movements.

[0076] refer to Figure 8 and 9The storage mechanism 430 also includes a pushing assembly, which is arranged on the side of the limiting vertical plate 421 and is used to push the screws in the storage box 431 to the other side of the storage box 431 to avoid the screws from piling up in a partial area of ​​the storage box 431 and failing to fully utilize the storage space of the storage box 431. The pushing assembly can be used to push the higher stacked screws to other empty positions of the storage box 431 to better utilize the space of the storage box 431.

[0077] The pushing assembly includes a pushing cylinder 432 and a pushing plate 433 connected to the driving end of the pushing cylinder 432. The pushing plate 433 is arranged on the outside of the storage box 431 to ensure that it does not interfere with the normal falling of the screws under normal circumstances, thereby achieving better management of the screws.

[0078] The storage mechanism 430 also includes a box cover, which is arranged on the outside of the storage box 431 to protect the storage box 431 and prevent other debris from falling, thereby better managing the screws in the storage box 431.

[0079] An internal thread detection device 400 of the present embodiment limits the screw to be detected by a limiting mechanism 420, and inserts the detection shaft 415 into the internal screw hole of the screw to be checked under the drive of the horizontal drive member 412 and the vertical drive member 414 to detect whether the internal screw hole of the screw meets the requirements, and after the detection fails, the screw that fails the detection is placed in a storage box 431 by a robot arm to complete the screw internal thread detection. The whole process is automated, efficient and fast, and there is no error caused by human detection, thereby improving the detection accuracy.

[0080] In an optional embodiment, the automatic tapping machine of the present invention further includes a debris cleaning device 300, which is disposed below the automatic tapping device 200 and is used to collect and transport tapping debris.

[0081] The above examples are only used to further illustrate the technical content of the present invention, so that readers can understand it more easily, but they do not mean that the implementation of the present invention is limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. An automatic tapping machine, characterized in that: It includes a tapping machine feeding device, an automatic tapping device and an internal thread detection device; The feeding device of the tapping machine comprises: a feeding frame, a hopper, a step feeding mechanism and a feeding transmission mechanism; the feeding frame is used to set the hopper, the step feeding mechanism and the feeding transmission mechanism; the hopper is arranged on the feeding frame and is used to load the screws to be tapped; the step feeding mechanism comprises a feeding assembly and a feeding drive member, the feeding assembly is arranged in the hopper, the feeding drive member is arranged on the feeding frame, and the driving end of the feeding drive member is connected to and drives the feeding assembly to move the screws in the hopper upward; the feeding transmission mechanism is arranged on the feeding frame and is located below the blanking port of the feeding assembly, and is used to transmit the screws to the automatic tapping device; The automatic tapping device comprises a tapping machine frame, and a conveying mechanism, a tapping fixing mechanism and a tapping mechanism arranged on the tapping machine frame, wherein the tapping mechanism and the conveying mechanism are respectively arranged on both sides of the tapping fixing mechanism; the tapping mechanism comprises a tapping column, a tapping mounting plate arranged on the top of the tapping column, and a tapping driving member and a tapping drill bit arranged below the tapping mounting plate, the tapping driving member is connected to the tapping drill bit by transmission, drives the tapping drill bit to rotate for tapping, and the tapping column is arranged on the tapping machine frame; the tapping fixing mechanism comprises a tapping fixing base plate, and a fixing seat is arranged on the side of the tapping fixing base plate facing the tapping mechanism, and the fixing seat is located directly below the tapping drill bit; the conveying mechanism comprises a transmission base and a conveying manipulator, the conveying manipulator is arranged on the transmission base, and is used to convey the screws to be tapped and place them on the fixing seat for fixing, and convey the tapped screws to the internal thread detection device; The internal thread detection device comprises a limit mechanism, a detection mechanism and a storage mechanism, wherein the detection mechanism and the storage mechanism are respectively arranged on both sides of the limit mechanism; the limit mechanism comprises a limit vertical plate and a limit track, wherein the limit track is arranged at the upper end of the limit vertical plate, the lower end of the limit vertical plate is fixed, and a limit groove for placing the screw to be detected is arranged in the middle of the limit track; the detection mechanism comprises a detection vertical plate, a horizontal driving member, a detection mounting plate, a vertical driving member and a detection shaft, the bottom end of the detection vertical plate is fixed, the horizontal driving member is arranged at the top end of the detection vertical plate, the driving end of the horizontal driving member is connected to the detection mounting plate, the vertical driving member is arranged on the detection mounting plate, the driving end of the vertical driving member is connected to the detection shaft, and the detection shaft is opposite to the limit groove, for detecting the internal thread of the screw after tapping; the storage mechanism comprises a storage box for storing screws, and the storage box is arranged at the lower side of the detection shaft adjacent to the limit vertical plate; The hopper includes two side baffles arranged facing each other, and a material guide plate arranged between the two side baffles, the material guide plate is arranged downwardly obliquely and the end thereof stops at the feeding assembly, and the material guide plate is used to guide the material to the periphery of the feeding assembly; The fixing seat includes two supporting parts arranged opposite to each other, and the two supporting parts enclose a fixing hole, and the fixing hole is used to fix the screw to be processed; the supporting part includes a connecting part and a supporting part, one end of the connecting part is fixedly connected to the side of the tapping fixing base plate, and the other end of the connecting part is connected to the supporting part, and a limiting protrusion is provided on the surface of the supporting part.

2. The automatic tapping machine according to claim 1, characterized in that: The feeding assembly includes a buffer component and a pushing component, both ends of the buffer component are respectively fixed to the two side baffles, the pushing component is arranged on the side of the buffer component facing the guide plate, and the pushing component is tightly arranged with the buffer component, and the pushing component is connected to the driving end of the feeding drive member.

3. The automatic tapping machine according to claim 2, characterized in that: The stepped feeding mechanism includes at least two feeding components and a feeding push plate. The feeding components are arranged adjacent to each other in a stepped shape from low to high. The pushing components of different feeding components are all connected to the driving end of the feeding drive member; the bottom ends of the pushing components are all connected to the upper surface of the feeding push plate, and the lower surface of the feeding push plate is connected to the driving end of the feeding drive member.

4. The automatic tapping machine according to claim 3, characterized in that: The automatic tapping device comprises at least two tapping mechanisms, and a plurality of the tapping mechanisms are arranged side by side on the tapping machine frame.

5. The automatic tapping machine according to claim 1, characterized in that: It also includes a debris cleaning device, which is arranged below the automatic tapping device and is used to collect and transport tapping debris.

6. The automatic tapping machine according to claim 1, characterized in that: The limiting track includes two track bars arranged opposite to each other and a limiting connector, the two ends of the limiting connector are respectively connected to the two track bars, the opposite sides of the two track bars are provided with stepped limiting parts, and the oppositely arranged stepped limiting parts constitute the limiting groove.

7. The automatic tapping machine according to claim 6, characterized in that: The position-limiting connector includes a connecting body and two connecting parts perpendicular to the connecting body, and the connecting parts are respectively arranged at two ends of the connecting body.

8. The automatic tapping machine according to claim 7, characterized in that: The detection mounting plate includes a horizontal mounting portion and a vertical mounting portion, the horizontal mounting portion and the vertical mounting portion are perpendicular to each other to form an L-shaped detection mounting plate, the horizontal mounting portion is connected to the driving end of the horizontal driving member, and the vertical driving member is arranged on the vertical mounting portion.

Images