CN112620830A

CN112620830A - Workpiece conveying mechanism and internal thread machining equipment

Info

Publication number: CN112620830A
Application number: CN202011580063.0A
Authority: CN
Inventors: 蔡晓磊
Original assignee: Ningbo Ikd Precision Parts Co ltd
Current assignee: Ningbo Ikd Precision Parts Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-04-09
Anticipated expiration: 2040-12-28
Also published as: CN112620830B

Abstract

The invention discloses a workpiece conveying mechanism and internal thread processing equipment, which comprise a bearing slide way for placing a workpiece, a poking frame for poking the workpiece to change the position of the workpiece on the bearing slide way, a first driving mechanism and a second driving mechanism for driving the poking frame, wherein the first driving mechanism and the second driving mechanism are respectively arranged on the bearing slide way and the poking frame; workpiece positions are arranged on the bearing slide rail at equal intervals, the poking frame is positioned on one side of the bearing slide rail, and a plurality of poking structures matched with the workpiece positions are uniformly distributed on the poking frame; the poking frame can move back and forth along the length direction of the bearing slide way under the driving of the first driving mechanism and is close to or far away from the bearing slide way under the driving of the second driving mechanism; the first driving mechanism and the second driving mechanism are utilized to enable the toggle frame to circularly move in three states, and the toggle structure is utilized to gradually move the workpiece to the next workpiece position, so that the workpiece is conveyed on the bearing slide way, the workpiece conveying position is constant and accurate, the processing unit is convenient to process the workpiece, and the automation degree of the internal thread processing equipment is improved.

Description

Workpiece conveying mechanism and internal thread machining equipment

Technical Field

The invention relates to the technical field of machining, in particular to a workpiece conveying mechanism and internal thread machining equipment.

Background

The tapping machine is internal thread processing equipment for workpieces, and is processing equipment for processing threads, screws or tooth buttons on the inner side wall of a preset through hole or blind hole.

The tapping machine with the authorization notice number of CN210451259U comprises a conveying assembly and a tapping assembly, wherein the conveying assembly comprises a conveying guide rail, a workpiece mounting plate, a clamping device arranged on the workpiece mounting plate and a driving piece for pushing the workpiece mounting plate to slide along the conveying guide rail.

In the above documents, the tapping machine generally includes a tapping unit for cutting out a thread, but generally the tapping operation is performed step by step. Before tapping, the workpiece is manually deburred and then carried to internal thread processing equipment for tapping. Moreover, the tapping part is easy to generate burr and decayed tooth, and the yield is not high. And subsequently, equipment is required to be used for detection and screening.

In order to improve the working efficiency, the reaming mechanism, the internal thread machining mechanism, the deburring mechanism, the internal thread detection mechanism and the workpiece output mechanism are integrated on the same rack, so that the machining of the workpiece threads can be automatically completed on one piece of equipment, and therefore the workpiece is required to be sequentially conveyed to different stations and positioned by the workpiece conveying mechanism, and the workpieces can be conveniently operated by the mechanisms.

Disclosure of Invention

The invention aims to provide an efficient workpiece conveying mechanism.

The technical scheme adopted by the invention for solving the technical problems is as follows: the workpiece conveying mechanism comprises a bearing slide way for placing a workpiece, a poking frame for poking the workpiece to change the position of the workpiece on the bearing slide way, a first driving mechanism and a second driving mechanism for driving the poking frame;

workpiece positions are arranged on the bearing slide rail at equal intervals, the poking frame is positioned on one side of the bearing slide rail, and a plurality of poking structures matched with the workpiece positions are uniformly distributed on the poking frame;

the poking frame can move back and forth along the length direction of the bearing slide way under the driving of the first driving mechanism and is close to or far away from the bearing slide way under the driving of the second driving mechanism;

in a first state, the second driving mechanism drives the toggle frame to be close to the bearing slide way to a preset position, and the workpiece on the bearing slide way falls into the toggle structure of the toggle frame;

in a second state, the first driving mechanism drives the poking frame to slide a workpiece position along the first direction of the length of the bearing slide way, and the workpiece positioned in the poking structure moves a workpiece position along the placing surface of the bearing slide way in the first direction;

in a third state, the second driving mechanism drives the poking frame to be far away from the bearing slide way, the poking structure on the poking frame is far away from the workpiece on the bearing slide way, and the first driving mechanism drives the poking frame to move to a workpiece position in a second direction opposite to the first direction;

the toggle frame is driven by the first driving mechanism and the second driving mechanism to circulate in three states so as to convey the workpieces to the positions of the workpieces along the bearing slide way in the first direction.

The technical scheme adopted by the invention for further optimizing the technical problem is as follows: the transmission mechanism comprises a first linear guide rail, a moving platform, a second linear guide rail and a pushing component connected with the poking frame; the first linear guide rail extend along the length direction of the bearing slide way, the moving platform is arranged on the first linear guide rail and moves back and forth along the first linear guide rail, the second linear guide rail is arranged on the upper surface of the moving platform in the direction perpendicular to the first linear guide rail, and the pushing component is arranged on the second linear guide rail and is close to or far away from the bearing slide way along the second linear guide rail.

The technical scheme adopted by the invention for further optimizing the technical problem is as follows: the first driving mechanism is a pen-shaped air cylinder, a piston rod of the pen-shaped air cylinder is connected with the moving platform through a transmission plate, so that the moving platform is driven to move along a first linear guide rail, and first damper groups are arranged at two ends of the first linear guide rail to buffer the sliding speed of the moving platform.

The technical scheme adopted by the invention for further optimizing the technical problem is as follows: the second driving mechanism is a sliding table cylinder which is fixedly arranged on the movable platform, and a piston rod of the sliding table cylinder is connected to the pushing component so as to drive the pushing component to move; and second damper groups are arranged at two ends of the second linear guide rail to buffer the sliding speed of the pushing component.

The technical scheme adopted by the invention for further optimizing the technical problem is as follows: the second linear guide rail comprises two sliding rails which are arranged on the moving platform in parallel, the pushing part comprises two sliding parts which are arranged on the sliding rails and a connecting part which is bridged between the sliding parts, a hollow area is formed between the sliding parts and the connecting part in the direction of keeping away from the bearing slide way, and the sliding table cylinder is arranged in the hollow area.

The technical scheme adopted by the invention for further optimizing the technical problem is as follows: the toggle structure is a notch matched with the outer contour of the workpiece, the notch is open towards the bearing slideway, the workpiece can enter the notch from the opening of the notch, and the inner surface of the notch plays a role in positioning the workpiece.

The technical scheme adopted by the invention for further optimizing the technical problem is as follows: the poking structure is arranged at the front ends of a plurality of finger-shaped parts extending from one side of the poking frame to the bearing slide way, and the finger-shaped parts are detachably connected to the poking frame.

The technical scheme adopted by the invention for further optimizing the technical problem is as follows: the workpiece positions comprise a first-stage workpiece position, a plurality of middle workpiece positions and a last-stage workpiece position, an internal thread machining unit is arranged above the middle workpiece positions, an internal thread detection mechanism is arranged above the last-stage workpiece position, the bearing slide way is vertically butted with a feeding slide way at the first-stage workpiece position, and a material ejecting cylinder capable of ejecting workpieces into the gap is arranged on the feeding slide way;

the technical scheme adopted by the invention for further optimizing the technical problem is as follows: the tail end of the bearing slide way is connected with an inclined downward discharging slide way, and the final stage workpiece position of the bearing slide way is positioned at the junction of the bearing slide way and the discharging slide way; when the toggle structure leaves the workpiece, the workpiece on the final stage workpiece position falls into the discharging slideway due to the action of gravity.

Another protection subject of the invention is: the internal thread processing equipment comprises a workpiece input mechanism, a plurality of processing units, an internal thread detection mechanism, a workpiece output mechanism and the workpiece conveying mechanism.

Compared with the prior art, the invention has the advantages that the first driving mechanism and the second driving mechanism are utilized to enable the toggle frame to circularly move in three states, and the toggle structure is utilized to gradually move the workpiece to the next workpiece position, so that the workpiece is conveyed on the bearing slide way, the workpiece conveying position is constant and accurate, the processing unit can process the workpiece conveniently, the automation degree of the internal thread processing equipment is improved, and the production efficiency of tapping operation is further improved.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the background art and explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

Fig. 1 is an overall schematic view of an internal thread processing apparatus of a preferred embodiment of the present invention;

FIG. 2 is a first schematic view of the internal thread processing apparatus of the preferred embodiment of the present invention with the protective cover removed;

fig. 3 is a second schematic view of the female screw machining apparatus according to the preferred embodiment of the present invention with the protective cover removed;

fig. 4 is a third schematic view of the female screw machining apparatus according to the preferred embodiment of the present invention with the protective cover removed;

FIG. 5 is a first schematic view of a workpiece transport mechanism of a preferred embodiment of the present invention;

FIG. 6 is a second schematic view of a workpiece transport mechanism of a preferred embodiment of the present invention;

FIG. 7 is a third schematic view of a workpiece transport mechanism of a preferred embodiment of the present invention;

FIG. 8 is a first cycle start operation state diagram of the workpiece transport mechanism of the preferred embodiment of the present invention;

fig. 9 is a second cycle start operation state diagram of the workpiece transport mechanism of the preferred embodiment of the present invention;

fig. 10 is a third cycle start operation state diagram of the workpiece transport mechanism of the preferred embodiment of the present invention;

fig. 11 is a diagram of a fourth cycle start operation of the workpiece transport mechanism in accordance with a preferred embodiment of the present invention;

FIG. 12 is an exploded schematic view of the workpiece transport mechanism of a preferred embodiment of the present invention;

fig. 13 is an installation schematic view of a first driving mechanism of the workpiece conveying mechanism of a preferred embodiment of the present invention;

fig. 14 is an installation schematic view of a second driving mechanism of the workpiece conveying mechanism of a preferred embodiment of the present invention;

FIG. 15 is a schematic view of a finger of the workpiece transport mechanism of a preferred embodiment of the present invention;

FIG. 16 is a schematic view of a pushing member of the workpiece transport mechanism of a preferred embodiment of the present invention;

FIG. 17 is a first schematic view of a workpiece transport mechanism and a workpiece output mechanism of a preferred embodiment of the present invention;

FIG. 18 is a second schematic view of the workpiece transport mechanism and the workpiece output mechanism of a preferred embodiment of the present invention;

FIG. 19 is a third schematic view of the workpiece transport mechanism and the workpiece output mechanism of a preferred embodiment of the present invention;

FIG. 20 is a first schematic view of an internal thread detection mechanism in accordance with a preferred embodiment of the present invention;

FIG. 21 is a second schematic view of an internal thread detection mechanism of a preferred embodiment of the present invention;

FIG. 22 is a first schematic view of the internal thread detection mechanism of the preferred embodiment of the present invention with the hood removed;

FIG. 23 is a second schematic view of the internal thread detection mechanism of the preferred embodiment of the present invention with the hood removed;

FIG. 24 is a cross-sectional view of an internal thread detection mechanism of a preferred embodiment of the present invention;

FIG. 25 is an exploded view of an internal thread detection mechanism of a preferred embodiment of the present invention;

FIG. 26 is an enlarged partial schematic view of FIG. 24 in accordance with a preferred embodiment of the present invention;

FIG. 27 is a schematic view of the assembly of the clamping mechanism, collet and drift gauge of a preferred embodiment of the present invention.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally arranged when products of the present invention are used, and are used for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. And the use of "first" and "second" in the description is for clarity of description only and should not be construed as limiting the invention.

As shown in fig. 1 to 4, the internal thread processing apparatus for processing internal threads of automobile parts includes a frame 1, a workpiece input mechanism 2 integrated on the frame 1, a processing mechanism 3, an internal thread detection mechanism 4, a workpiece output mechanism 5, and a workpiece conveying mechanism 6.

In addition, in order to ensure the production safety and to prevent dust, water mist and the like generated during operation from entering the machine and improve the environment and the image, the machine frame 1 is provided with a protective cover 7 in the embodiment in order to contact the internal thread processing equipment with the operation environment. The workpiece input mechanism 2, the machining mechanism 3, the internal thread detection mechanism 4, the workpiece output mechanism 5, and the workpiece conveying mechanism 6 are all accommodated in a protective cover 7.

The workpiece input mechanism 2 conveys the workpieces to be processed to the workpiece conveying mechanism 6, the workpieces are sequentially conveyed to the processing mechanism 3 through the workpiece conveying mechanism 6 to be processed, the workpieces enter the workpiece output mechanism 5 through detection of the internal thread detection mechanism 4, and the workpieces which are detected are classified and unloaded by the workpiece output mechanism 5.

The machining mechanism 3 sequentially comprises a reaming unit 31, a tapping unit 32 and a deburring unit 33 from the workpiece input mechanism 2 to the workpiece output mechanism 5, wherein the reaming unit 31 is used for removing burrs at the bottom of a preset hole of the workpiece; the tapping unit 32 is used for tapping an internal thread on the inner side wall of the preset hole to form a threaded hole; the deburring processing unit 33 is used for brushing off burrs of the screw holes processed by the tooth processing unit 32.

This embodiment is through with reaming processing unit 31, attack tooth processing unit 32 and burring processing unit 33 and internal thread detection mechanism 4 and integrate in proper order on frame 1 that has the feed, defeated material and work piece output mechanism to the assembly line has been formed on a set of equipment, thereby the integration of equipment has been strengthened, a series of operations in the internal thread course of working just can be accomplished to the processing work piece of generation to a set of equipment, thereby work efficiency has been improved, the labor cost has been saved, the space occupation rate of equipment has also been reduced.

Preferably, the machining mechanism 3 further includes a hole chip removal machining unit 34, and the hole chip removal machining unit 34 is located between the deburring machining unit 33 and the internal thread detecting mechanism. The in-hole dust removing processing unit 34 is a blowing mechanism connected with the gas path pipeline, and an air tap of the blowing mechanism is aligned with the processed threaded hole of the workpiece so as to blow off dust remaining in the threaded hole.

Further, the reaming processing unit 31, the tapping processing unit 32, the deburring processing unit 33, the in-hole chip removing processing unit 34, and the internal thread detection mechanism 4 are equidistantly distributed along a straight line.

As shown in fig. 5 to 7, preferably, the workpiece conveying mechanism 6 includes a carrying slide 61 on which the workpiece is placed, a toggle frame 62 driven by the driving assembly to move, and the toggle frame 62 moves and toggles the workpiece to change the position of the workpiece on the carrying slide 61.

Preferably, the carrying chute 61 is located on the conveying platform 11 of the frame 1, the carrying chute 61 extending horizontally. The bearing slide 61 is provided with workpiece positions at equal intervals, and the workpiece positions correspond to the workpiece input mechanism 2, the reaming unit 31, the tapping unit 32, the deburring unit 33, the in-hole chip removing unit 34 and the internal thread detection mechanism in a one-to-one correspondence manner.

The poking frame 62 is positioned at one side of the bearing slide way 61, and a plurality of poking structures 63 matched with the positions of the workpieces are uniformly distributed on the poking frame 62; the toggle arrangement 63 is used to toggle a workpiece.

The driving assembly comprises a first driving mechanism 65 and a second driving mechanism 66, and the toggle frame 62 can move back and forth along the length direction of the bearing slide way 61 under the driving of the first driving mechanism 65 and move close to or away from the bearing slide way 61 under the driving of the second driving mechanism 66.

In the first state, the second driving mechanism 66 drives the toggle frame 62 to approach the carrying slide 61, and the workpiece on the carrying slide 61 falls into the toggle structure 63 of the toggle frame 62.

In the second state, the first driving mechanism 65 drives the toggle frame 62 to slide along the first direction of the length of the carrying slide 61 by a workpiece position, and the workpiece located in the toggle structure 63 moves along the placing surface of the carrying slide 61 by a distance of the workpiece position in the first direction.

In the third state, the second driving mechanism 66 drives the toggle frame 62 to move away from the carrying slide 61, the toggle structure 63 on the toggle frame 62 moves away from the workpiece on the carrying slide 61, and the first driving mechanism 65 drives the toggle frame 62 to move a distance of one workpiece position in a second direction opposite to the first direction.

The dial frame 62 is driven by the first drive mechanism 65 and the second drive mechanism 66 to cyclically move in three states so as to convey the workpiece along the load-bearing slide 61 in the first direction to each workpiece position.

In this embodiment, the first driving mechanism 65 and the second driving mechanism 66 are used to make the toggle frame 62 circularly move in three states, and the toggle structure 63 is used to gradually move the workpiece to the next workpiece position, so that the workpiece is conveyed on the bearing slideway 61, the position where the workpiece is conveyed is constant and accurate, the processing unit can process the workpiece conveniently, the automation degree of the internal thread processing equipment is improved, and the production efficiency of tapping operation is improved.

As shown in fig. 6, 7, 12-14, the workpiece conveying mechanism 6 preferably further comprises a transmission mechanism including a first linear guide 67, a moving platform 68, a second linear guide 69, and a pushing member 610 connected to the dial frame 62.

As shown in fig. 13, the first linear guide 67 is provided on the conveying platform 11 of the frame 1, and the length extending direction is parallel to the length extending direction along the carrying chute 61.

A plurality of first sliding members 601611 are arranged below the moving platform 68, a first sliding groove 603 matched with the first linear guide 67 is arranged on the lower surface of the first sliding member 601611, and the first sliding groove 603 is connected with the first linear guide 67 in a sliding manner, so that the moving platform 68 can move along the first linear guide 67.

Preferably, the first linear guide 67 comprises two parallel first slide rails, in this embodiment, the moving platform 68 is a rectangular plate, and two first sliding components 601 matching with the first slide rails are respectively disposed on two sides of the moving platform 68, so that the four first sliding components 601 are disposed at four corners of the rectangular plate.

A driving plate 613 is bolted to the movable platform 68, and the other end of the driving plate 613 is connected to the first driving mechanism 65, so that the movable platform 68 can move back and forth along the first linear guide 67.

Preferably, the first driving mechanism 65 is a pen-type cylinder, and a piston rod of the pen-type cylinder is connected to one end of the transmission plate 613 to drive the moving platform 68 to reciprocate through the movement of the piston.

Further preferably, the two ends of the first linear guide 67 are provided with a first damper group 614, the first damper group 614 is composed of two first dampers arranged between the two first slide rails, and the two first dampers are arranged oppositely. The first damper group 614 not only dampens the sliding velocity of the moving platform 68, but also limits the sliding amplitude of the moving platform 68.

As shown in fig. 14, a second linear guide 69 is provided on the moving platform 68, the second linear guide 69 is provided on the upper surface of the moving platform 68 in a direction perpendicular to the first linear guide 67, and the pushing member 610 is provided on the second linear guide 69 and is close to or away from the carrying chute 61 along the second linear guide 69.

The second linear guide 69 comprises two second slide rails disposed in parallel on the moving platform 68. As shown in fig. 16, the pushing component 610 includes two sliding portions 604 on the second slide rail and a connecting portion 602 bridging between the sliding portions 604, and a hollow area M is formed between the sliding portions 604 and the connecting portion 602 in a direction away from the carrying chute 61.

The second driving mechanism 66 is a sliding table cylinder, the sliding table cylinder 66 is fixedly arranged on the movable platform 68, and a piston rod of the sliding table cylinder 66 is connected to the pushing member 610, so as to drive the pushing member 610 to move.

Preferably, as shown in fig. 14 and 16, the sliding table cylinder 66 is located in the hollow area M. A piston rod of the slide table cylinder 66 is connected to the connecting portion 602 of the pushing member 610. Therefore, the structure of the equipment is more compact, the stress of the pushing component 610 is more balanced, and the stability of the pushing component 610 pushing the toggle frame 62 is improved.

Further, as shown in fig. 14, a second damper group 612 is disposed at two ends of the second linear guide rail 69, and the second damper group 612 is composed of two second dampers disposed between the two second slide rails, and the two second dampers are disposed oppositely. The second damper group 612 not only buffers the sliding speed of the pushing member 610, but also limits the sliding amplitude of the pushing member 610. Thus, when the pushing member 610 moves to the direction close to the carrying slide 61, the toggle structure 63 on the toggle frame 62 is located at the position where the workpiece can be just dropped into it.

Preferably, as shown in fig. 16, the connecting portion 602 is further provided with an avoiding groove C to prevent the second damper on the side of the second linear guide 69 close to the load-bearing runner from colliding with the pushing member.

As shown in fig. 12-15, the toggle structure 63 is a notch 63 matching the outer contour of the workpiece, the notch 63 is open to the load-bearing slideway 61, the workpiece can enter the notch 63 from the opening of the notch 63, and the inner surface of the notch 63 plays a role in positioning the workpiece.

When the workpiece conveying mechanism 6 is in the second state, the workpiece is located in the toggle structure 63, and the processing unit directly processes the workpiece located on the bearing slide 61. At the moment, the inner surface of the notch 63 plays a role in positioning the workpiece, so that the workpiece cannot move during processing, and the processing precision is improved.

It should be understood that the toggle structure 63 not only realizes the transmission of the workpiece, but also realizes the positioning of the workpiece during processing, so that the whole equipment is more simplified, the manufacturing cost is lower, the production process is simpler, and the production efficiency is higher.

Preferably, the dial frame 62 is an elongated member, the dial structure 63 is disposed at the front end of a plurality of finger-like members 615 extending from one side of the dial frame 62 toward the carrying slide 61, and the finger-like members 615 are detachably connected to the dial frame 62. It is further preferred that the finger 615 be threaded underneath the dial frame 62.

In the production process, tapping operation is often required for different products, so the toggle structure 63 also has to be changed along with the change of the products. The detachable finger-like member 615 can be adaptively replaced as a fitting, thereby improving the versatility of the internal thread machining apparatus and improving the economy of the apparatus.

As shown in fig. 7 (the lateral arrow in the lower part of the figure indicates the workpiece transport direction), more specifically, in this embodiment, a total of six equally spaced workpiece positions are included, and correspondingly, the dial frame 62 has six finger-like members 615 with the dial formations 63. The six workpiece positions are divided into a first and only one final workpiece position L1, four intermediate workpiece positions and a final workpiece position L6. The first-stage workpiece position L1 corresponds to the workpiece input mechanism 2. An internal thread detection mechanism 4 is arranged above the final stage workpiece position L6. The four intermediate workpieces correspond to a reaming unit 31, a tapping unit 32, a deburring unit 33, and an in-hole chip removing unit 34. Namely, the reaming processing unit 31 is arranged above the second-level workpiece position L2, the tapping processing unit 32 is arranged above the third-level workpiece position L3, the deburring processing unit 33 is arranged above the fourth-level workpiece position L4, and the in-hole chip removing processing unit 34 is arranged above the fifth-level workpiece position L5.

As shown in fig. 7, the workpiece input mechanism 2 includes a supply chute 21 and an ejection cylinder 22, and the supply chute 21 vertically abuts against the carrying chute 61 at the primary workpiece position L1. The ejector rod of the ejector cylinder 22 faces the load bearing slide 61. In the first state, the ejector cylinder 22 pushes the workpiece of the feeding chute 21 onto the carrying chute 61 and into the notch 63 of the toggle frame 62. The workpiece conveying mechanism 6 operates for one cycle to convey one workpiece in the workpiece input mechanism 2 to the machining mechanism 3, and the workpiece conveying mechanism 6 operates in a circulating manner to convey the workpieces in the workpiece input mechanism 2 one by one downstream of the equipment assembly line.

Preferably, the feeding chute 21 is further provided with an inductive switch, the inductive switch is in communication with the ejecting cylinder 22, and when the inductive switch senses a workpiece, the ejecting cylinder 22 operates.

Preferably, the workpiece input mechanism 2 includes a vibratory tray carrying the workpiece and a transverse rail 23, the transverse rail 23 transversely abutting the feed chute. The vibration of the vibration plate causes the workpieces to drop one by one onto the transverse rails 23 and to enter the feeding chute one by one, thus ensuring that the workpieces enter the workpiece conveying mechanism 6 one by one.

It should be noted that the vibration frequency of the vibration plate, the period of the ejector cylinder 22, and the period of the work conveying mechanism 6 are matched with each other.

As shown in fig. 17 to 19, in the present embodiment, the workpiece discharge mechanism 5 includes a discharge chute 51, the discharge chute 51 is connected obliquely downward to the end of the load-bearing chute 61, and the final workpiece position L6 of the load-bearing chute 61 closest to the discharge chute 51 is located at the intersection of the load-bearing chute 61 and the discharge chute 51; when the toggle arrangement 63 is clear of the workpiece, the workpiece at the final workpiece position L6 falls by gravity into the discharge chute 51. Therefore, the workpieces which are subjected to the compliance detection of the internal thread detection mechanism 4 on the conveying platform 11 are conveyed to the workpiece output mechanism 5.

Further, the workpiece output mechanism 5 further includes a mechanism for sorting the workpieces on the conveying platform 11, which includes a controller, a qualified product conveying flow channel 52, a defective product conveying flow channel 53 and a toggle mechanism 54. The internal thread detection mechanism 4 is connected with a controller, the controller is connected with the toggle mechanism 54, the internal thread detection mechanism 4 carries out compliance detection on the workpiece and feeds the workpiece back to the controller, and the controller sorts the workpiece to the qualified product conveying flow channel 52 or the unqualified product conveying flow channel 53 by controlling the action of the toggle mechanism 54.

Preferably, the discharging chute 51 in this embodiment is linearly butted against the non-defective product conveying runner 52. Hereinafter collectively referred to as the non-defective product conveying flow path 52.

Further preferably, the defective product conveying flow path 53 is provided on one side of the defective product conveying flow path 52, and the toggle mechanism 54 is provided at the boundary between the two flow paths. When the toggle mechanism 54 is not operated, the workpiece moves from the qualified product conveying flow passage 52; when the toggle mechanism 54 is operated, the workpiece on the qualified product conveying flow passage 52 is toggled to the unqualified conveying flow passage to move.

The toggle mechanism 54 includes an air cylinder 501 and a rotary toggle lever 502, the air cylinder is a lever air cylinder, the lever air cylinder is disposed at the bottom side of the qualified product conveying flow channel 52, and the rotary toggle lever 502 is disposed on the upper surface of the qualified product conveying flow channel 52.

It should be understood that the internal thread detection mechanism 4 is communicated with the sorting mechanism, the internal thread detection mechanism 4 carries out compliance detection on the workpieces on the conveying platform 11 and feeds back the detected workpieces to the controller, and the controller sorts the workpieces to the qualified product conveying flow channel 52 or the unqualified product conveying flow channel 53 by controlling the action of the toggle mechanism 54, so that the workpieces after being detected are sorted online, and the production efficiency is improved.

It should be understood that the controller may be the overall controller K in fig. 1, or may be a separate controller.

As shown in fig. 8 to 11, the movement steps of the female thread processing apparatus in the actual use will be described in summary.

In the initial state, the material ejecting cylinder retracts, the pen-shaped cylinder retracts, and the sliding table cylinder extends. The poking frame is close to the bearing slide way, and the poking structure is positioned on the bearing slide way.

The workpiece A1 at the feeding position of the vibrating disc enters a feeding slide way, and the product is sensed and switched to perform the following actions:

the first step is as follows: the ejection cylinder extends out to push the workpiece A1 on the feeding slide way to the position of the first-stage workpiece, so that the workpiece A1 is ejected into the ejection first-stage toggle structure;

the second step is that: the pen-shaped cylinder stretches out to drive the whole poking frame to walk rightwards for a distance displacement of a workpiece position, the workpiece A1 reaches a second-level workpiece position, and the reaming unit executes the operation: reaming hole bottom burrs;

the third step: the sliding table cylinder retracts, the poking frame is far away from the bearing slide way at the moment, the poking structure is separated from the workpiece A1, and the workpiece A1 is kept at the position of the second-stage workpiece;

the third step: the pen-shaped cylinder retracts to drive the poking frame to walk to the left by one workpiece position, and the first-stage poking structure returns to the first-stage workpiece position;

the fourth step: a workpiece A2 at the feeding position of the vibrating disc enters a feeding slide way, the program jumps to the first step, and the workpiece A2 is ejected to the position of a first-stage workpiece by an ejection cylinder.

Next, the work conveying mechanism is circulated, the work a2 starts the step of circulating the preceding work a1, the work a2 reaches the secondary work position, and the work a1 reaches the tertiary work position through the secondary circulation. The reaming processing unit performs work on the workpiece a2, and the tapping processing unit performs work on the workpiece a 1.

With this cycle, the workpieces in the workpiece input mechanism are conveyed one by one toward the processing downstream. Workpiece a1 passes through each workpiece position and performs the associated work to the final workpiece position. After the workpiece A1 executes the internal thread detection process in the toggle structure, the toggle frame is far away from the bearing slide way, and the workpiece A1 directly falls into the discharge channel. In the next cycle, the workpiece a2 falls into the discharge passage.

The following describes in detail a specific embodiment of the internal thread detection mechanism 4 provided in this embodiment with reference to fig. 20 to 27.

As shown in fig. 20 to 25, the internal thread detection mechanism 4 includes a servo motor 41 for providing a rotary power, a first coupler 42, a torque detection sensor 43 for detecting a torque of a gauge 46, a second coupler 44, a clamping mechanism 45, a gauge 46 for detecting a thread, and a clamping sleeve 47 for clamping the gauge 46, which are connected in sequence from top to bottom;

the upper end of the torque detection sensor 43 is connected with the output end of the servo motor 41 through a first coupler 42, and the lower end of the torque detection sensor 43 is connected with the upper end of the clamping handle mechanism 45 through a second coupler 44;

the clamp mechanism 45 includes a clamp body 401 having an upper end connected to the second coupling 44, and a hollow movable shaft 402 elastically extendable and contractible in the clamp body 401. The hollow movable shaft 402 is elastically extensible relative to the clamp holder body 401, so that the gauge 46 has a certain elastic movement amount and does not cause adverse damage to the threaded hole.

The hollow movable shaft 402 is provided with an elastic clamping mechanism, and the jacket 47 is quickly connected to the lower end of the hollow movable shaft 402 through the elastic clamping mechanism. When the thread gauge 46 is worn and the type needs to be replaced frequently, the jacket 47 provided with the thread gauge 46 is quickly connected to the lower end of the hollow movable shaft 402 through the elastic clamping mechanism, so that the thread gauge 46 can be replaced more conveniently and quickly.

The torque detection sensor 43 is connected with the master controller K shown in fig. 1, or a controller may be separately provided, the torque detection sensor 43 detects the torque of the go gauge 46 in real time and feeds back the torque value to the controller, and the controller compares a preset threshold value with the torque value to judge and output information on whether the internal thread of the automobile part is in compliance or not. After processing the information about whether the internal threads are in compliance, the controller controls the toggle mechanism 54 to perform corresponding actions.

The servo motor 41 drives the jacket 47 and the thread go gauge 46 to rotate, when the threaded hole of the part is qualified, the thread go gauge 46 can smoothly pass through the threaded hole, and the torque detected by the torque detection sensor 43 is small; when the screw hole is not qualified, the screw gauge 46 encounters resistance, and the torque detected by the torque detection sensor 43 exceeds a threshold value, and the screw hole is determined to be not qualified.

Preferably, the female screw detecting mechanism 4 further includes a housing 48, the first coupling 42, the torque detecting sensor 43 and the second coupling 44 are disposed in the housing 48, the housing 48 prevents dust and oil from entering the torque detecting sensor 43, the servo motor 41 is fixed above the housing 48, and the clamping mechanism 45 extends downward from the bottom wall F of the housing 48.

Further preferably, the internal thread detection mechanism 4 further includes a fixed frame 49 and a lifting cylinder 410, a side wall of the fixed frame 49 is connected with a side wall of the hood 48 through a linear slide rail 411, and the lifting cylinder 410 drives the hood 48 to move up and down relative to the fixed frame 49.

Also, the third damper 412 is provided on the fixed frame 49, and the third damper 412 abuts against the bottom wall F of the hood 48 to reduce the downward movement energy of the hood 48.

Further, the movable end of the elevating cylinder 410 is connected to the outer wall of the hood 48 through an L-shaped bracket 413. The side of the L-shaped bracket 413 away from the hood 48 is provided with a sleeve 403 which can be sleeved at the movable end of the lifting cylinder 410, and the sleeve 403 is in threaded connection with the movable end of the lifting cylinder 410 so that the hood 48 moves along with the lifting cylinder 410.

As shown in fig. 24 to 27, preferably, the upper portion of the clamp holder body 401 passes through the bottom wall F of the hood 48 and is provided with a screw thread structure Y on the outer wall of the clamp holder body 401, the hood 48 is provided with a lock nut 415 resting on the upper surface of the bottom wall F, the lock nut 415 is screwed on the screw thread structure of the clamp holder body 401, the lock nut 415 restricts the clamp holder body 401 from being detached from the hood 48, and a bearing assembly is provided between the clamp holder body 401 and the bottom wall F of the hood 48 to allow the clamp holder body 401 to be rotatable with respect to the hood 48.

The bearing assembly includes a ball bearing 416 and a flat bearing 417. The two bearings are used in combination, with the bottom wall F of the housing 48 being provided with an annular recess for receiving the bearing assembly. The ball bearing 416 is provided at the upper end to reduce friction during power transmission and improve transmission efficiency of mechanical power in a rolling manner. A flat bearing 417 is provided at the lower end, which mainly bears axial loads during assembly.

As shown in fig. 27, it is further preferable that the hollow movable shaft 402 extends into the clamp holder body 401, a movable limiting mechanism is disposed between the hollow movable shaft 402 and the clamp holder body 401, a buffer spring 418 is disposed in an inner cavity formed by the hollow movable shaft 402 and the clamp holder body 401, an upper end of the buffer spring 418 abuts against an upper inner wall of the clamp holder body 401, and a lower end of the buffer spring 418 abuts against an integrally formed limiting portion 405 on the inner wall of the hollow movable shaft 402.

The movable limiting mechanism comprises a stroke pin 406 penetrating through the side wall of the clamp holder body 401 and a limiting groove 407 distributed along the height direction on the outer wall of the hollow movable shaft 402, and the inner end of the stroke pin 406 extends into the limiting groove 407 so that the movable shaft can limit and move up and down relative to the clamp holder body 401.

In addition, in order to facilitate assembly and enhance the strength of the clamp holder body 401, the clamp holder housing 408 is further sleeved on the lower half section of the clamp holder body 401.

The elastic clamping mechanism comprises an elastic sheet 419 positioned outside the hollow movable shaft 402 and a locking steel ball 420 connected to the inner side of the elastic sheet 419, the hollow movable shaft 402 is provided with a limiting through hole T, the outer wall of the jacket 47 is provided with an arc groove H, and the locking steel ball 420 is exposed from the inner side of the limiting through hole T and clamped into the arc groove H on the outer wall of the jacket 47 so as to connect the jacket 47 to the hollow movable shaft 402; the clamping sleeve 47 is pulled downwards, the locking steel balls 420 move outwards under the action of the cambered surface groove H and are separated from the cambered surface groove H, and the clamping sleeve 47 can be separated from the hollow movable shaft 402.

The workpiece conveying mechanism and the internal thread processing device provided by the invention are described in detail, the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the examples is only used for helping understanding the invention and the core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The workpiece conveying mechanism is used for conveying workpieces among different procedures during internal thread machining of the workpieces, and is characterized by comprising a bearing slide way for placing the workpieces and enabling the workpieces to slide on the placing surface of the bearing slide way, a stirring frame for stirring the workpieces to change the positions of the workpieces on the bearing slide way, a first driving mechanism and a second driving mechanism for driving the stirring frame;

workpiece positions are arranged on the bearing slide rail at equal intervals, the workpieces are slid to the positions of adjacent workpieces by the sliding frame, and the workpieces are always positioned on the bearing slide rail in the sliding process;

the stirring frame is positioned on one side of the bearing slideway, and a plurality of stirring structures matched with the positions of workpieces are uniformly distributed on the stirring frame;

in a second state, the first driving mechanism drives the poking frame to slide a workpiece position along the first direction of the length of the bearing slide way, and the workpiece positioned in the poking structure moves a distance of the workpiece position along the placing surface of the bearing slide way to the first direction;

in a third state, the second driving mechanism drives the poking frame to be far away from the bearing slide way, the poking structure on the poking frame is far away from the workpiece on the bearing slide way, and the first driving mechanism drives the poking frame to move for a distance of one workpiece position in a second direction opposite to the first direction;

the toggle frame is driven by the first driving mechanism and the second driving mechanism to circulate in three states so as to convey the workpiece to a next workpiece position step by step along the bearing slide way to the first direction.

2. The workpiece conveying mechanism according to claim 1, further comprising a transmission mechanism, wherein the transmission mechanism comprises a first linear guide rail, a moving platform, a second linear guide rail and a pushing component connected with the stirring frame; the first linear guide rail extend along the length direction of the bearing slide way, the moving platform is arranged on the first linear guide rail and moves back and forth along the first linear guide rail, the second linear guide rail is arranged on the upper surface of the moving platform in the direction perpendicular to the first linear guide rail, and the pushing component is arranged on the second linear guide rail and is close to or far away from the bearing slide way along the second linear guide rail.

3. The workpiece conveying mechanism according to claim 2, wherein the first driving mechanism is a pen-type cylinder, a piston rod of the pen-type cylinder is connected with the moving platform through a transmission plate so as to drive the moving platform to move along a first linear guide rail, and first damper groups are arranged at two ends of the first linear guide rail so as to damp the sliding speed of the moving platform.

4. The workpiece conveying mechanism according to claim 2, wherein the second driving mechanism is a slide cylinder, the slide cylinder is fixedly arranged on the movable platform, and a piston rod of the slide cylinder is connected to the pushing member so as to drive the pushing member to move; and second damper groups are arranged at two ends of the second linear guide rail to buffer the sliding speed of the pushing component.

5. The workpiece conveying mechanism according to claim 4, wherein the second linear guide rail comprises two slide rails arranged on the moving platform in parallel, the pushing component comprises two sliding portions arranged on the slide rails and a connecting portion bridged between the sliding portions, a hollow area is formed between the sliding portions and the connecting portion in the direction away from the bearing slide way, and the sliding table cylinder is arranged in the hollow area.

6. The workpiece transport mechanism of claim 1, wherein the toggle is configured as a notch matching an outer contour of the workpiece, the notch is open to the load-bearing slide, the workpiece can enter the notch from the open of the notch, and an inner surface of the notch is used for positioning the workpiece.

7. The workpiece conveying mechanism of claim 6, wherein the toggle structure is disposed at the front ends of a plurality of finger-like members extending from one side of the toggle frame toward the carrying slideway, and the finger-like members are detachably connected to the toggle frame.

8. The workpiece conveying mechanism according to claim 6, wherein the workpiece positions include a first-stage workpiece position, a plurality of intermediate workpiece positions and a last-stage workpiece position, an internal thread processing unit is arranged above the intermediate workpiece positions, an internal thread detection mechanism is arranged above the last-stage workpiece position, the bearing slide is vertically butted with a feeding slide at the first-stage workpiece position, and a material ejecting cylinder capable of ejecting the workpiece into the gap is arranged on the feeding slide.

9. The workpiece transport mechanism of claim 8, wherein the end of the load-bearing slide is connected to a downwardly inclined discharge slide, the last workpiece position of the load-bearing slide being located at the intersection of the load-bearing slide and the discharge slide; when the toggle structure leaves the workpiece, the workpiece on the final stage workpiece position falls into the discharging slideway due to the action of gravity.

10. Internal thread processing equipment, characterized by comprising a workpiece input mechanism, a plurality of processing units, an internal thread detection mechanism, a workpiece output mechanism and a workpiece conveying mechanism according to any one of claims 1 to 9.