CN110785075A - Cylindrical cam transmission structure and plug-in device of plug-in machine - Google Patents
Cylindrical cam transmission structure and plug-in device of plug-in machine Download PDFInfo
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- CN110785075A CN110785075A CN201911031783.9A CN201911031783A CN110785075A CN 110785075 A CN110785075 A CN 110785075A CN 201911031783 A CN201911031783 A CN 201911031783A CN 110785075 A CN110785075 A CN 110785075A
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- guide groove
- horizontal
- spiral
- plug
- horizontal guide
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/04—Mounting of components, e.g. of leadless components
- H05K13/0404—Pick-and-place heads or apparatus, e.g. with jaws
- H05K13/0406—Drive mechanisms for pick-and-place heads, e.g. details relating to power transmission, motors or vibration damping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/08—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion
- F16H25/12—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion with reciprocation along the axis of rotation, e.g. gearings with helical grooves and automatic reversal or cams
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- General Engineering & Computer Science (AREA)
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- Microelectronics & Electronic Packaging (AREA)
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Abstract
The invention relates to a cylindrical cam transmission structure, which comprises a rack, a cylindrical shaft and a driving source, wherein the cylindrical shaft is arranged on the rack; a first spiral guide groove and a second spiral guide groove are dug in the outer wall of the cylindrical shaft; the first spiral guide groove comprises a first horizontal guide groove and a second horizontal guide groove; the first horizontal guide groove extends downwards to form a first inclined guide groove connected with the second horizontal guide groove; the second spiral guide groove comprises a third horizontal guide groove and a fourth horizontal guide groove; the third horizontal guide groove extends downwards to form a fifth inclined guide groove connected with the fourth horizontal guide groove; the longitudinal stroke and the transverse stroke of the first inclined guide groove are both larger than those of the fifth inclined guide groove; the first moving seat and the second moving seat are both provided with rollers, and the two rollers are respectively matched and slidably connected in the first spiral guide groove and the second spiral guide groove; the driving source drives the cylindrical shaft to rotate, and drives the two rollers to move along the first spiral guide groove and the second spiral guide groove respectively, so that the first movable seat and the second movable seat are driven to do stroke-variable linear motion.
Description
Technical Field
The invention belongs to the technical field of component inserters, and particularly relates to a cylindrical cam transmission structure and a component inserter device of the component inserter.
Background
The existing cylindrical cam transmission structure is generally provided with two guide grooves, the structures of the two guide grooves are completely consistent, when the cylindrical cam transmission structure rotates, the two mechanisms are respectively guided to move through the two guide grooves, the two mechanisms simultaneously move synchronously, and the moving strokes of the two mechanisms are completely consistent, but the two mechanisms cannot be guided to perform two actions with unequal strokes, therefore, the actions of two unequal strokes to be completed in the prior art must be driven by two independent power sources, the part cost can be increased by adopting the two power sources, the inconsistency of the two actions with unequal strokes can be caused to be poor, the more power sources are used for allocating parameters of the power sources, and the detection and maintenance cost is higher. For example, in a component mounter, the operation of clamping and transferring an electronic component by a clamping mechanism of the component mounter and the operation of inserting the electronic component by a component mounter mechanism of the component mounter are two unequal-stroke operations.
In the prior art, a clamping mechanism of a plug-in device of a plug-in machine firstly moves pins of electronic components to the positions above corresponding circuit board jacks, and then pushes the electronic components through the plug-in mechanism, so that the pins of the electronic components are plugged in plug-in holes on a circuit board, the electronic components are automatically assembled on the circuit board, the problem of low efficiency of plug-in through manpower is solved, and the production efficiency of the circuit board is improved. However, in the card inserting device of the conventional card inserting machine, the card inserting mechanism and the card inserting mechanism respectively complete two unequal stroke actions of moving the card and inserting the card through a motor or an air cylinder, and a rigidity error and a transmission waiting time of an electric signal which are generated when the two motors work independently cause that the two motors are difficult to synchronously operate simultaneously; in addition, the more motors are used in the component inserter, the higher the parameter allocation, detection and maintenance cost of the motors.
Disclosure of Invention
The invention aims to provide a cylindrical cam transmission structure, and aims to solve the technical problems that in the prior art, a clamping mechanism and a plug-in mechanism respectively complete two unequal stroke actions of moving a plug-in unit and moving the plug-in unit through a motor or an air cylinder, and the two motors are difficult to synchronously operate simultaneously due to rigidity errors and transmission waiting time of electric signals generated when the two motors work independently.
In order to achieve the above object, an embodiment of the present invention provides a cylindrical cam transmission structure, including a frame, a cylindrical shaft, and a driving source; the cylindrical shaft is rotationally connected to the rack, and the driving source is mounted on the rack and drives the cylindrical shaft to rotate;
the outer wall of the cylindrical shaft is provided with at least two spiral guide grooves in parallel; the two spiral guide grooves are respectively a first spiral guide groove and a second spiral guide groove; the first spiral guide groove comprises a first horizontal guide groove and a second horizontal guide groove; the head end of the first horizontal guide groove is downwards extended out of a first inclined guide groove connected with the head end of the second horizontal guide groove; the second spiral guide groove comprises a third horizontal guide groove and a fourth horizontal guide groove; the head end of the third horizontal guide groove is downwards extended out of a fifth inclined guide groove connected with the head end of the fourth horizontal guide groove; the longitudinal stroke and the transverse stroke of the first inclined guide groove are both larger than those of the fifth inclined guide groove;
the first moving seat and the second moving seat are both connected with the rack in a sliding manner, the first moving seat and the second moving seat are both provided with rollers, and the two rollers are respectively matched and connected in the first spiral guide groove and the second spiral guide groove in a sliding manner; the driving source drives the cylindrical shaft to rotate to drive the two rollers to move along the first spiral guide groove and the second spiral guide groove respectively, so that the first movable seat and the second movable seat are driven to do stroke-variable linear motion.
Optionally, the first inclined guide groove comprises a first inclined guide groove section and a second inclined guide groove section which are connected end to end; the head end of the first inclined guide groove section is connected with the head end of the first horizontal guide groove, and the tail end of the second inclined guide groove section is connected with the head end of the second horizontal guide groove;
the first inclined guide slot segment is in line with the fifth inclined guide slot structure; the horizontal stroke of the fourth horizontal guide groove is larger than or equal to the horizontal stroke of the second inclined guide groove section and the second horizontal guide groove.
Optionally, a second inclined guide groove connected with the tail end of the first horizontal guide groove extends upwards from the tail end of the second horizontal guide groove, so that the first spiral guide groove forms an annular spiral guide groove; the tail end of the fourth horizontal guide groove extends upwards to form a sixth inclined guide groove connected with the tail end of the third horizontal guide groove, so that the second spiral guide groove forms an annular spiral guide groove; the longitudinal stroke and the transverse stroke of the second inclined guide groove are both larger than those of the sixth inclined guide groove.
Optionally, the second inclined guide groove comprises a third inclined guide groove section and a fourth inclined guide groove section which are connected end to end; the head end of the third inclined guide groove section is connected with the tail end of the second horizontal guide groove, and the tail end of the fourth inclined guide groove section is connected with the tail end of the first horizontal guide groove;
the third inclined guide slot segment is in line with the sixth inclined guide slot structure; the horizontal stroke of the third horizontal guide groove is larger than or equal to the horizontal stroke of the fourth inclined guide groove section and the first horizontal guide groove.
Optionally, the cylindrical cam transmission structure further comprises a guide assembly; the guide assembly comprises two guide rods; the two guide rods are arranged on the rack in parallel; the first movable seat and the second movable seat are both provided with two guide sleeves, and the two guide sleeves are respectively connected to the two guide rods in a sliding manner.
A plug-in device of a plug-in machine is provided with the cylindrical cam transmission structure.
Optionally, the plug-in device of the plug-in machine comprises a plug-in component and a clamping component; the plug-in component and the clamping component are respectively arranged on the first movable seat and the second movable seat; the driving source drives the cylindrical shaft to rotate, and the clamping component on the second moving seat is guided to move through the second spiral guide groove, so that the clamping component moves to transfer the electronic component to the circuit board; and meanwhile, the plug-in component on the first movable seat is guided to move through the first spiral guide groove, so that the plug-in component pushes the electronic component and pins of the electronic component are inserted into holes of the circuit board.
Optionally, the clip assembly comprises a connecting rod, a connecting seat and a clip claw; the upper end of the connecting rod is fixedly arranged on the second movable seat, the lower end of the connecting rod is fixedly provided with the connecting seat, and the clamping piece claw is arranged on the connecting seat; and the clamping claw is symmetrically provided with a pair of clamping grooves so that the two clamping grooves can respectively clamp two pins of the electronic component.
Optionally, the inserter assembly comprises an inserter shaft and an inserter head; the upper end of the plug-in rod is fixedly arranged on the first movable seat, and the lower end of the plug-in rod is fixedly provided with the plug-in head.
Optionally, the connecting rod is provided with a through hole penetrating through two ends of the connecting rod, the lower end of the plug-in rod penetrates through the through hole and extends out of the through hole, and the plug-in head is located on one side above the clamping piece groove.
Compared with the existing cylindrical cam transmission structure, the invention has the following advantages:
1. when the roller is in the initial position, the two rollers are respectively positioned in the first horizontal guide groove and the third horizontal guide groove; the driving source drives the cylindrical shaft to rotate in the forward direction, the first inclined guide groove guides the first movable seat to move linearly, and meanwhile, the fifth inclined guide groove guides the second movable seat to move synchronously with the first movable seat; because the longitudinal stroke and the transverse stroke of the first inclined guide groove are both larger than those of the fifth inclined guide groove, the roller of the second movable seat reaches the fourth horizontal guide groove first, and the fourth horizontal guide groove guides the second movable seat, so that the second movable seat does not move and the position is kept unchanged; at this time, the roller of the first movable seat is still located on the first inclined guide groove and is guided by the first inclined guide groove to continuously move, so that the first movable seat and the second movable seat perform stroke-variable linear motion, namely the first movable seat and the second movable seat perform two linear motions with unequal strokes. When the roller of the first movable seat and the roller of the second movable seat are respectively positioned in the second horizontal guide groove and the fourth horizontal guide groove, the driving source drives the cylindrical shaft to rotate in the opposite direction, so that the first spiral guide groove and the second spiral guide groove respectively guide the first movable seat and the second movable seat to return to the initial positions, and the operation is sequentially repeated. Therefore, the cylindrical shaft is driven by one driving source, so that the first movable seat and the second movable seat can perform stroke-variable linear motion, and two or more stroke-variable linear motions can be realized by only one driving source, so that the cost for parameter allocation, detection and maintenance of the driving source is greatly reduced.
2. The tail end of the second horizontal guide groove extends upwards to form a second inclined guide groove connected with the tail end of the first horizontal guide groove, so that the first spiral guide groove forms an annular spiral guide groove; the tail end of the fourth horizontal guide groove extends upwards to form a sixth inclined guide groove connected with the tail end of the third horizontal guide groove, so that the second spiral guide groove forms an annular spiral guide groove; when the two rollers are respectively positioned in the second horizontal guide groove and the fourth horizontal guide groove, the driving source drives the cylindrical shaft to continuously rotate in the forward direction, the second inclined guide groove and the sixth inclined guide groove respectively guide the first movable seat and the second movable seat to return to the initial positions, the motion continuity is good, the driving source (servo motor) is not required to enable stroke-variable linear motion to be carried out in a reciprocating mode through forward rotation or reverse rotation, and due to the fact that the starting and stopping processes exist during each forward and reverse rotation conversion of the motor, the time consumed by starting and stopping of the motor can be reduced, and the working efficiency is improved.
3. In the plug-in device of the plug-in machine adopting the cylindrical cam transmission structure, when in an initial position, the two rollers are respectively positioned in the first horizontal guide groove and the third horizontal guide groove; when the plug-in device works, the driving source drives the cylindrical shaft to rotate, the fifth inclined guide groove section guides the clamping piece assembly to move and transfers electronic components to a circuit board, and meanwhile, the first inclined guide groove section guides the plug-in component assembly and the clamping piece assembly to move synchronously. Then, the fourth horizontal guide groove guides the clamping component, so that the clamping component does not move and keeps clamping pins of the electronic component, meanwhile, the second inclined guide groove section guides the plug-in component to continue moving to push the electronic component, so that the pins of the electronic component are inserted into holes of the circuit board, and the electronic component is inserted into the holes of the circuit board. And finally, the second inclined guide groove and the sixth inclined guide groove respectively guide the plug-in component and the clamping component to return to the initial positions, and the plug-in component assembly is carried out on the electronic components in a circulating mode. Therefore, the cylindrical cam transmission structure drives the clamping component to move and the plug-in component to move, so that the moving and plug-in components move synchronously and asynchronously, and the two unequal-stroke linear motions of the moving and plug-in components are completed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a cylindrical cam transmission structure according to an embodiment of the present invention.
Fig. 2 is a first perspective view of a cylindrical shaft of a cylindrical cam transmission structure according to an embodiment of the present invention.
Fig. 3 is a second perspective view of the cylindrical shaft of the cylindrical cam transmission structure according to an embodiment of the present invention.
Fig. 4 is a third perspective view of the cylindrical shaft of the cylindrical cam transmission structure according to an embodiment of the present invention.
Fig. 5 is a fourth perspective view of the cylindrical shaft of the cylindrical cam transmission structure according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a plug-in device of a plug-in machine according to a third embodiment of the present invention.
Fig. 7 is a cross-sectional view of fig. 6 in accordance with the present invention.
Fig. 8 is a schematic structural diagram of a hidden rack of a card insertion device of a card inserter according to a third embodiment of the present invention.
Fig. 9 is a schematic structural diagram of a clamping claw of a card inserting device of a card inserter according to a third embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
a cylindrical shaft 100, a first spiral guide groove 110, a first horizontal guide groove 111, a second horizontal guide groove 112, a first inclined guide groove 113, a first inclined guide groove section 113a, a second inclined guide groove section 113b, a second inclined guide groove 114, a third inclined guide groove section 114a, a fourth inclined guide groove section 114b, a second spiral guide groove 120, a third horizontal guide groove 121, a fourth horizontal guide groove 122, a fifth inclined guide groove 123, a sixth inclined guide groove 124, a chassis 200, a support plate 201, a clearance groove 202, a mounting shaft 210, a bearing 211, a drive source 220, a drive source 221, a coupling 222, a mounting plate 223, a roller 230, a first movable base 240, a second movable base 250, a plug-in component 260, a plug-in rod 261, a plug-in head 262, a horizontal end surface 263, a plug-in component 270, a connecting rod 271, a connecting base clip 272, claws 273, screws 274, clip grooves 275, a clip 276, the V-shaped guide groove 278, the through hole 279, the guide assembly 280, the guide rod 281, the third mounting seat 282, the guide sleeve 283 and the spring 284.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the invention.
In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In one embodiment of the present invention, referring to fig. 1, there is provided a cylindrical cam gear structure including a frame 200, a cylindrical shaft 100, and a driving source 221. The two ends of the cylindrical shaft 100 are rotatably connected to the frame 200, and the cylindrical shaft 100 is vertically arranged. The driving source 221 is mounted on the frame 200, and the driving source 221 is connected to one end of the cylindrical shaft 100 and drives the cylindrical shaft 100 to rotate.
Referring to fig. 7, support plates 201 are installed at both upper and lower ends of the frame 200. The mounting shaft 210 is vertically arranged between the support plates 201, and two ends of the mounting shaft 210 are rotatably connected to the two support plates 201 of the frame 200 through bearings 211. The center of the cylindrical shaft 100 is vertically installed on the installation shaft 210.
Referring to fig. 7 and 8, the driving source 221 is fixedly mounted to the top of the frame 200 by a mounting plate 223, the rotating shaft of the driving source 221 movably passes through the mounting plate 223, and the rotating shaft of the driving source 221 is fixedly connected to the upper end of the mounting shaft 210 by a coupling 222. The mounting shaft 210 is driven to rotate by the driving source 221, so as to drive the cylindrical shaft 100 to rotate. Specifically, the driving source 221 is a servo motor.
Referring to fig. 2, at least two spiral guide grooves are dug in the outer wall of the cylindrical shaft 100 in parallel. The two spiral guide grooves are a first spiral guide groove 110 and a second spiral guide groove 120.
Referring to fig. 2 and 3, the first spiral guide groove 110 includes a first horizontal guide groove 111 and a second horizontal guide groove 112. The first end 1111 of the first horizontal guide groove 111 extends downward to form a first inclined guide groove 113 connected to the first end 1121 of the second horizontal guide groove 112. The second spiral guide groove 120 includes a third horizontal guide groove 121 and a fourth horizontal guide groove 122. A fifth inclined guide groove 123 is extended downward from a head 1211 of the third horizontal guide groove 121 and is connected to a head 1221 of the fourth horizontal guide groove 122. The longitudinal and lateral strokes of the first inclined guide groove 113 are greater than those of the fifth inclined guide groove 123. Specifically, the first end 1111 of the first horizontal guide groove 111 corresponds to the first end 1211 of the third horizontal guide groove 121, and the end 1122 of the second horizontal guide groove 112 corresponds to the end 1222 of the fourth horizontal guide groove 122.
Referring to fig. 1, 5 and 7, a first moving base 240 and a second moving base 250 are slidably connected to the frame 200, and the first moving base 240 and the second moving base 250 are provided with rollers 230. Specifically, the ends of the two rollers 230 are fixedly connected to the side ends of the first movable base 240 and the second movable base 250, respectively. The two rollers 230 are respectively adapted to be slidably connected in the first spiral guiding groove 110 and the second spiral guiding groove 120. Specifically, the frame 200 is provided with a clearance groove 202 for avoiding the movement of the two rollers. The driving source drives the cylindrical shaft 100 to rotate, and drives the two rollers 230 to move along the first spiral guiding groove 220 and the second spiral guiding groove 230, respectively, so as to drive the first movable base 240 and the second movable base 250 to make a linear motion with a variable stroke.
Referring to fig. 1, the cylindrical cam driving structure further includes a guide assembly 280. The guide assembly 280 includes two guide rods 281. The two guide rods 281 are symmetrically arranged on the rack 200, and the two guide rods 281 are symmetrically arranged. Specifically, the upper ends of the two guide rods 281 are both mounted on the mounting plate 223, and the lower ends of the two guide rods 281 are fixedly mounted on the rack 200 through a third mounting seat 282. Two guide sleeves 283 are respectively arranged on the first moving seat 240 and the second moving seat 250, and the two guide sleeves 283 are respectively connected to the two guide rods 281 in a sliding manner. The first movable base 240 and the second movable base 250 are guided by the guide assembly 280 to smoothly reciprocate linearly up and down along the two guide rods 281. Further, referring to fig. 1 and 7, a spring 284 is sleeved on the guide rod 281 between the second moving seat 250 and the third mounting seat 282. The spring 284 plays a role of elastically buffering the second movable base 250.
In the initial position, the two rollers 230 are respectively located in the first horizontal guide groove 111 and the third horizontal guide groove 121. The driving source 221 drives the cylindrical shaft 100 to rotate in a forward direction, the first inclined guide groove 113 guides the first movable base 240 to move linearly along the guide rod 281, and the fifth inclined guide groove 123 guides the second movable base 250 to move in synchronization with the first movable base 240. Since the longitudinal and lateral strokes of the first inclined guide groove 113 are greater than those of the fifth inclined guide groove 123, the roller 230 of the second movable base 250 reaches the fourth horizontal guide groove 122 first, and the fourth horizontal guide groove 122 guides the second movable base 250, so that the second movable base 250 does not move and the position thereof remains unchanged. At this time, the roller 230 of the first movable base 240 is still located on the first inclined guide slot 113 and is guided by the first inclined guide slot 113 to move continuously, so that the first movable base 240 and the second movable base 250 perform linear motion with variable stroke, that is, the first movable base 240 and the second movable base 250 perform two linear motions with unequal strokes. When the roller 230 of the first movable base 240 and the roller 230 of the second movable base 250 are respectively located in the second horizontal guide groove 112 and the fourth horizontal guide groove 122, the driving source 221 drives the cylindrical shaft 100 to rotate in opposite directions, so that the first spiral guide groove 110 and the second spiral guide groove 120 respectively guide the first movable base 240 and the second movable base 250 to return to the initial positions, and the process is repeated in sequence. Therefore, the cylindrical shaft 100 is driven by one driving source 221, so that the first movable base 240 and the second movable base 250 can perform linear motion with variable stroke, and simultaneously, only one driving source 221 is needed to perform linear motion with two or more variable stroke, thereby greatly reducing the cost of parameter allocation, detection and maintenance of the driving source 221.
In another embodiment of the present invention, referring to fig. 2 and 3, the first inclined guide groove 113 of the cylindrical cam gear includes a first inclined guide groove segment 113a and a second inclined guide groove segment 113b connected end to end. The head end of the first inclined guide groove section 113a is connected to the head end 1111 of the first horizontal guide groove 111, and the tail end of the second inclined guide groove section 113b is connected to the head end 1121 of the second horizontal guide groove 112. Referring to fig. 2 and 3, the first inclined guide groove segment 113a is structurally identical to the fifth inclined guide groove 123, and the first inclined guide groove segment 113a is located corresponding to the fifth inclined guide groove 123. The horizontal stroke of the fourth horizontal guide groove 122 is greater than or equal to the horizontal stroke of the second inclined guide groove section 113b and the second horizontal guide groove 112. Preferably, the horizontal stroke of the fourth horizontal guide groove 122 is equal to the horizontal stroke of the second inclined guide groove section 113b and the second horizontal guide groove 112.
Because the first inclined guiding groove section 113a and the fifth inclined guiding groove 123 have the same structure, the first inclined guiding groove section 113a and the fifth inclined guiding groove 123 respectively guide the first movable seat 240 and the second movable seat 250 to perform synchronous linear motion, and then the second inclined guiding groove section 113b guides the first movable seat 240 to perform asynchronous motion relative to the second movable seat 250, so that the first movable seat 240 and the second movable seat 250 perform synchronous motion and then perform asynchronous motion, that is, the first movable seat and the second movable seat perform two unequal-stroke linear motions, so that the linear effects of the two unequal-stroke linear motions are better.
In another embodiment of the present invention, referring to fig. 2 to 5, the end 1122 of the second horizontal guide slot 112 of the cylindrical cam gear extends upward to form a second inclined guide slot 114 connected to the end 1112 of the first horizontal guide slot 111, so that the first spiral guide slot 110 forms an annular spiral guide slot. The end 1222 of the fourth horizontal guiding groove 122 extends upward to form a sixth inclined guiding groove 124 connected with the end 1212 of the third horizontal guiding groove 121, so that the second spiral guiding groove 120 forms a ring-shaped spiral guiding groove. The longitudinal and lateral strokes of the second inclined guide groove 114 are greater than those of the sixth inclined guide groove 124.
Further, referring to fig. 4 and 5, the second inclined guide groove 114 includes a third inclined guide groove section 114a and a fourth inclined guide groove section 114b connected end to end. The head end of the third inclined guide groove segment 114a is connected to the tail end 1122 of the second horizontal guide groove 112, and the tail end of the fourth inclined guide groove segment 114b is connected to the tail end 1112 of the first horizontal guide groove 111. The third inclined guide groove segment 114a is identical in structure to the sixth inclined guide groove 124, and the position of the third inclined guide groove segment 114a corresponds to the position of the sixth inclined guide groove 124. The horizontal stroke of the third horizontal guide groove 121 is greater than or equal to the horizontal stroke of the fourth inclined guide groove segment 114b and the first horizontal guide groove 111. Preferably, the horizontal stroke of the third horizontal guide groove 121 is equal to the horizontal stroke of the fourth inclined guide groove segment 114b and the first horizontal guide groove 111. Referring to fig. 2, the fifth inclined guide groove 123 and the sixth inclined guide groove 124 are symmetrically disposed, so that the second spiral guide groove 120 guides the second movable base 250 to perform a symmetrical reciprocating linear motion.
Referring to fig. 2 to 5, when the first spiral guide groove 110 and the second spiral guide groove 120 are both annular spiral guide grooves, when the roller 230 of the first movable base 240 and the roller 230 of the second movable base 250 are respectively located in the second horizontal guide groove 112 and the fourth horizontal guide groove 122, the driving source 221 drives the cylindrical shaft 100 to continue to rotate in the forward direction, and the second inclined guide groove 114 and the sixth inclined guide groove 124 respectively guide the first movable base 240 and the second movable base 250 to return to the initial positions, so that the motion continuity is good, and the driving source 221 (servo motor) is not required to make the stroke-variable linear motion perform in a reciprocating manner through forward rotation or reverse rotation.
A plug-in device of a plug-in machine is provided with the cylindrical cam transmission structure, which is shown in figure 6.
Referring to fig. 6 and 7, the inserter device of the inserter comprises an inserter assembly 260 and a clamp assembly 270. The insert assembly 260 and the clamp assembly 270 are respectively mounted on the first moving seat 240 and the second moving seat 250 in parallel; the driving source 221 drives the cylindrical shaft 100 to rotate, and the clip assembly 270 on the second movable base 250 is guided to move through the second spiral guide groove 120, so that the clip assembly 270 moves to transfer the electronic component to the circuit board. Meanwhile, the plug-in assembly 260 on the first movable base 240 is guided to move by the first spiral guide groove 110, so that the plug-in assembly 260 pushes the electronic component and inserts the pins of the electronic component into the holes of the circuit board.
Further, referring to fig. 7 and 8, the clip assembly 270 includes a connection rod 271, a connection seat 272, and a clip claw 273. The upper end of the connecting rod 271 is fixedly mounted on the lower end of the second movable seat 250, the lower end of the connecting rod 271 slidably passes through the third mounting seat 282 and is fixedly mounted with the connecting seat 272, and the clamping claw 273 is mounted on the connecting seat 272; specifically, the upper end of the clamping claw 273 is fixedly mounted on the connecting seat 272 by a plurality of screws 274. A pair of clip grooves 275 are symmetrically formed on the lower end of the clip claw 273 so that the two clip grooves 275 respectively clip two pins of the electronic component.
Further, referring to fig. 9, the lower end of the clamping claw 273 is obliquely extended out of the clamping portion 276, and a pair of clamping grooves 275 are symmetrically formed on the clamping portion 276. The outer sides of the two clip grooves 275 are both provided with a V-shaped guide groove 278 which is opened outwards, and it should be understood that the V-shaped guide groove 278 is communicated with the clip grooves 275. In operation, a pushing mechanism (shown in the figure, wherein the pushing mechanism is a conventional pushing mechanism in a component inserter) pushes two pins of an electronic component into the two clip grooves 275 through the two V-shaped guiding grooves 278, and the two pins of the electronic component are clamped in the two clip grooves 275. It should be understood that the two pins of the electronic component are clamped at the two clamp grooves 275 by interference fit, and under the pushing of an external force, the two pins of the electronic component can slide downwards along the two clamp grooves 275 and be inserted into the plug-in holes of the circuit board.
Referring to fig. 7 and 8, the insert assembly 260 includes an insert shaft 261 and an insert head 262. The upper end of the plug-in rod 261 is fixedly installed on the first movable base 240, and the lower end of the plug-in rod 261 is fixedly installed with the plug-in head 262. Specifically, the upper end of the plug-in rod 261 is fixedly mounted on the lower end of the first movable base 240 by means of threaded connection, and the lower end surface of the plug-in head 262 is a horizontal end surface 263, so that when the plug-in head 262 pushes the head of an electronic component while moving down, the electronic component is guaranteed to be stressed uniformly and move down stably.
Further, referring to fig. 8, the connection rod 271 is provided with a through hole 279 penetrating both ends thereof, the lower end of the insert rod 261 passes through the through hole 279 and protrudes outside the through hole 279, and the insert head 262 is positioned at a side above the insert groove 275. The overall structure of the inserter device can be made more compact by adopting the mechanism in which the inserter rod 261 slides through the through hole 279 of the connecting rod 271.
The plug-in device of the plug-in machine adopting the cylindrical cam transmission structure has the following effects: in the initial position, the two rollers 230 are respectively located in the first horizontal guide groove 111 and the third horizontal guide groove 121. In operation, the driving source 221 drives the cylindrical shaft 100 to rotate, the fifth inclined guiding groove 123 guides the clip assembly 270 to move and transfers electronic components to a circuit board, and the first inclined guiding groove section 133a guides the plug-in assembly 260 to move synchronously with the clip assembly 270. Then, the fourth horizontal guiding groove 122 guides the clip assembly 270, so that the clip assembly 270 does not move and keeps holding the pins of the electronic component, and meanwhile, the second inclined guiding groove section 113b guides the plug-in assembly 260 to move continuously to push the electronic component, so that the pins of the electronic component are inserted into the holes of the circuit board, and the plug-in of the electronic component into the holes of the circuit board is completed. Finally, the second slanted guide grooves 114 and the sixth slanted guide grooves 124 guide the card assembly 260 and the clip assembly 270, respectively, to return to the initial positions, and thus the electronic components are cyclically card-mounted. Therefore, the cylindrical cam transmission structure drives the clamping component 270 to move and the plug-in component 260 to move, so that the moving and plug-in actions move synchronously and asynchronously, and two unequal-stroke linear motions of the moving and plug-in components are completed, the linear motion effect is good, the defect that each motion or action needs one driving source 221 to drive in the prior art is overcome, the number of the driving sources 221 is saved, the equipment cost is reduced, and meanwhile, the cost for parameter allocation, detection and maintenance of the driving sources 221 is greatly reduced.
Moreover, because the first spiral guiding groove 110 and the second spiral guiding groove 120 are both annular spiral guiding grooves, when the two rollers 230 move around the first spiral guiding groove 110 and the second spiral guiding groove 120 respectively for one circle to return to the initial positions, the plug-in device completes one plug-in processing on the electronic component. Therefore, the driving source 221 continuously drives the cylindrical shaft 100 to rotate, so that the electronic components can be circularly subjected to plug-in processing, the driving source 221 (servo motor) is not required to reciprocate stroke-variable linear motion through forward rotation or reverse rotation, and the motor has a start-stop process during forward and reverse rotation conversion every time, so that the time consumed by starting and stopping the motor can be reduced, and the plug-in processing efficiency of the plug-in device is improved.
The rest of this embodiment is the same as the first embodiment, and the unexplained features in this embodiment are explained by the first embodiment, which is not described herein again.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the present invention pertains, the architecture form can be flexible and varied without departing from the concept of the present invention, and a series of products can be derived. But rather a number of simple derivations or substitutions are made which are to be considered as falling within the scope of the invention as defined by the appended claims.
Claims (10)
1. A cylindrical cam transmission structure is characterized by comprising a frame, a cylindrical shaft and a driving source; the cylindrical shaft is rotationally connected to the rack, and the driving source is mounted on the rack and drives the cylindrical shaft to rotate;
the outer wall of the cylindrical shaft is provided with at least two spiral guide grooves in parallel; the two spiral guide grooves are respectively a first spiral guide groove and a second spiral guide groove; the first spiral guide groove comprises a first horizontal guide groove and a second horizontal guide groove; the head end of the first horizontal guide groove extends downwards to form a first inclined guide groove connected with the head end of the second horizontal guide groove; the second spiral guide groove comprises a third horizontal guide groove and a fourth horizontal guide groove; the head end of the third horizontal guide groove extends downwards to form a fifth inclined guide groove connected with the head end of the fourth horizontal guide groove; the longitudinal stroke and the transverse stroke of the first inclined guide groove are both larger than those of the fifth inclined guide groove;
the first moving seat and the second moving seat are both connected with the rack in a sliding manner, the first moving seat and the second moving seat are both provided with rollers, and the two rollers are respectively matched and connected in the first spiral guide groove and the second spiral guide groove in a sliding manner; the driving source drives the cylindrical shaft to rotate to drive the two rollers to move along the first spiral guide groove and the second spiral guide groove respectively, so that the first movable seat and the second movable seat are driven to do stroke-variable linear motion.
2. The cylindrical cam drive of claim 1 wherein the first angled guide slot comprises an end-to-end first angled guide slot segment and a second angled guide slot segment; the head end of the first inclined guide groove section is connected with the head end of the first horizontal guide groove, and the tail end of the second inclined guide groove section is connected with the head end of the second horizontal guide groove;
the first inclined guide slot segment is in line with the fifth inclined guide slot structure; the horizontal stroke of the fourth horizontal guide groove is larger than or equal to the horizontal stroke of the second inclined guide groove section and the second horizontal guide groove.
3. The cylindrical cam drive of claim 1, wherein the second horizontal guide groove extends upward from the distal end thereof with a second inclined guide groove connected to the distal end of the first horizontal guide groove, so that the first spiral guide groove forms an endless spiral guide groove; the tail end of the fourth horizontal guide groove extends upwards to form a sixth inclined guide groove connected with the tail end of the third horizontal guide groove, so that the second spiral guide groove forms an annular spiral guide groove; the longitudinal stroke and the transverse stroke of the second inclined guide groove are both larger than those of the sixth inclined guide groove.
4. The cylindrical cam drive of claim 3 wherein the second angled guide slot includes a third angled guide slot segment and a fourth angled guide slot segment connected end to end; the head end of the third inclined guide groove section is connected with the tail end of the second horizontal guide groove, and the tail end of the fourth inclined guide groove section is connected with the tail end of the first horizontal guide groove;
the third inclined guide slot segment is in line with the sixth inclined guide slot structure; the horizontal stroke of the third horizontal guide groove is larger than or equal to the horizontal stroke of the fourth inclined guide groove section and the first horizontal guide groove.
5. The cylindrical cam drive of any one of claims 1-4, further comprising a guide assembly; the guide assembly comprises two guide rods; the two guide rods are arranged on the rack in parallel; the first movable seat and the second movable seat are both provided with two guide sleeves, and the two guide sleeves are respectively connected to the two guide rods in a sliding manner.
6. A card insertion device of a card inserter, characterized by having the cylindrical cam transmission structure of any one of claims 1 to 5.
7. The card assembly of the card inserter of claim 6 wherein said card assembly of said card inserter comprises a card assembly and a clip assembly; the plug-in component and the clamping component are respectively arranged on the first movable seat and the second movable seat; the driving source drives the cylindrical shaft to rotate, and the clamping component on the second moving seat is guided to move through the second spiral guide groove, so that the clamping component moves to transfer the electronic component to the circuit board; and meanwhile, the plug-in component on the first movable seat is guided to move through the first spiral guide groove, so that the plug-in component pushes the electronic component and pins of the electronic component are inserted into holes of the circuit board.
8. The card assembly of claim 7, wherein said clip assembly comprises a connecting rod, a connecting socket and a clip claw; the upper end of the connecting rod is fixedly arranged on the second movable seat, the lower end of the connecting rod is fixedly provided with the connecting seat, and the clamping piece claw is arranged on the connecting seat; and the clamping claw is symmetrically provided with a pair of clamping grooves so that the two clamping grooves can respectively clamp two pins of the electronic component.
9. The card assembly of the card inserter of claim 8 wherein said card assembly comprises a card rod and a card head; the upper end of the plug-in rod is fixedly arranged on the first movable seat, and the lower end of the plug-in rod is fixedly provided with the plug-in head.
10. The card insertion device of a card inserter according to claim 9, wherein the connecting rod is provided with a through hole penetrating both ends thereof, the lower end of the card rod passes through the through hole and protrudes outside the through hole, and the card head is located at a side above the clip groove.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911031783.9A CN110785075B (en) | 2019-10-28 | 2019-10-28 | Cylindrical cam transmission structure and plug-in device of plug-in machine |
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| CN201911031783.9A CN110785075B (en) | 2019-10-28 | 2019-10-28 | Cylindrical cam transmission structure and plug-in device of plug-in machine |
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| CN110785075B CN110785075B (en) | 2021-05-07 |
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| CN111569748A (en) * | 2020-06-30 | 2020-08-25 | 中国人民解放军陆军军医大学第一附属医院 | Even device is shaken to quality control article |
| CN112654229A (en) * | 2020-12-22 | 2021-04-13 | 合肥欣奕华智能机器有限公司 | Binding equipment and control method thereof |
| CN116816889A (en) * | 2023-08-30 | 2023-09-29 | 成都博森数智科技有限公司 | Reciprocating structure and massage device comprising same |
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| JP2016080164A (en) * | 2015-05-14 | 2016-05-16 | 千住金属工業株式会社 | Nut, attachment for nut, screw shaft and soldering device |
| CN107336261A (en) * | 2017-06-30 | 2017-11-10 | 燕山大学 | A kind of pitch-changing mechanism |
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| CN103273483A (en) * | 2013-05-10 | 2013-09-04 | 三峡大学 | Cam mechanical arm with adjustable stroke |
| JP2016080164A (en) * | 2015-05-14 | 2016-05-16 | 千住金属工業株式会社 | Nut, attachment for nut, screw shaft and soldering device |
| CN107336261A (en) * | 2017-06-30 | 2017-11-10 | 燕山大学 | A kind of pitch-changing mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111569748A (en) * | 2020-06-30 | 2020-08-25 | 中国人民解放军陆军军医大学第一附属医院 | Even device is shaken to quality control article |
| CN112654229A (en) * | 2020-12-22 | 2021-04-13 | 合肥欣奕华智能机器有限公司 | Binding equipment and control method thereof |
| CN116816889A (en) * | 2023-08-30 | 2023-09-29 | 成都博森数智科技有限公司 | Reciprocating structure and massage device comprising same |
| CN116816889B (en) * | 2023-08-30 | 2023-11-03 | 成都博森数智科技有限公司 | Reciprocating structure and massage device comprising same |
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| CN110785075B (en) | 2021-05-07 |
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