CN214217141U

CN214217141U - Mechanically-driven stepping conveying device

Info

Publication number: CN214217141U
Application number: CN202023340454.3U
Authority: CN
Inventors: 张远; 苏兰; 罗德生
Original assignee: Xiamen Zhaotang Machine Tool Co ltd
Current assignee: Xiamen Zhaotang Machine Tool Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-09-17
Anticipated expiration: 2030-12-31

Abstract

The utility model relates to a mechanical drive's marching type conveyor, slider in the guide way including guide way and sliding connection, still include and be used for promoting slider gliding driving piece in the guide way, the driving piece has "all around the motion of" four-way "in the coplanar, its motion of" around "and" about "drives the realization with first cam rocker mechanism and second cam rocker mechanism respectively, its motion of" controlling "still turns into the motion of" around "through a keysets that has the switching slope, the coaxial setting of cam in two cam rocker mechanisms is in a pivot, this pivot can also be associative with the lathe main shaft, under with guaranteeing the high-speed operation of lathe, marching type conveyor's synchronism, the accuracy nature of motion and keep good rhythm to feel.

Description

Mechanically-driven stepping conveying device

Technical Field

The utility model relates to a conveyor specifically is a conveyor who realizes marching type with mechanical drive and carry.

Background

In an automatic production line, the step-by-step conveying is one of the most common workpiece conveying methods. In the stepping conveying mechanism at the present stage, due to the consideration of convenience of structural design, a power source of the stepping conveying mechanism is generally a stepping motor or a servo motor, but the stepping motor generally has the risk of step loss, and the servo motor has higher cost.

SUMMERY OF THE UTILITY MODEL

Therefore, to the above problem, the utility model provides a mechanical drive's marching type conveyor.

The utility model discloses a following technical scheme realizes:

the utility model provides a mechanical drive's marching type conveyor, be used for carrying the material, including guide way, slider, driving piece, movable support and keysets, slider sliding connection is in the guide way, be equipped with the bearing part that is used for bearing the weight of the material on the slider, the sliding seat sets up the outside at the slider, driving piece sliding connection is on the sliding seat and has the first slip stroke of first direction or second direction relatively close to or keeping away from the slider, the sliding seat itself has the second slip stroke of third direction along the guide way motion or the fourth direction opposite to the third direction, the keysets sets up one side on the sliding seat second direction, the keysets has the switching side in its first direction, this switching side includes the first side that is comparatively close to the driving piece and the second side that is comparatively far away from the driving piece, first side and second side link up with a switching slope mutually, an elastic piece acts on the driving piece to enable one end of the driving piece in the second direction to be always abutted against the switching side edge, the switching plate has a third sliding stroke towards the third direction or the fourth direction, when the switching plate slides towards the third direction or the fourth direction, the driving piece slides from the first side edge to the second side edge or from the second side edge to the first side edge under the guidance of the switching slope, so that the driving piece slides towards the second direction or the first direction to realize the first sliding stroke of the driving piece, when the movable seat slides towards the third direction or the fourth direction, the driving piece on the movable seat is driven to also slide towards the third direction or the fourth direction, one side of the sliding piece facing the driving piece is provided with an uneven first matching part, one side of the driving piece facing the sliding piece is provided with a second matching part with the first matching part in shape, and the driving piece moves towards the first direction and is abutted against the sliding piece, make first cooperation portion and the contact cooperation of second cooperation portion, promote the slider to slide in the guide way towards the third direction again, the driving piece keeps away from the slider towards the second direction after that, moves towards the fourth direction again and resets to accomplish a duty cycle, the driving piece promotes the slider once that slides in the guide way with a duty cycle correspondingly, thereby realizes pushing the slider to slide in the guide way step by step.

In order to reduce cost and avoid the problem of step loss of a stepping motor, the stepping conveying device further comprises a first cam rocker mechanism and a second cam rocker mechanism which are used for realizing a second sliding stroke and a third sliding stroke, the first cam rocker mechanism comprises a first cam, the second cam rocker mechanism comprises a second cam, and the first cam and the second cam are coaxially connected on the same rotating shaft.

Wherein, for the driving member to make four-way circulation motion step by step to complete the step pushing work, the first cam and the second cam are configured as follows: under the drive of the first cam and the second cam, the movable seat and the adapter plate alternately move with a time difference.

In order to ensure the synchronism, the movement accuracy and the good rhythm of the step-type conveying device under the high-speed operation of the machine tool, the rotating shafts of the first cam and the second cam are connected with a main shaft of the machine tool.

Wherein, based on installation and cost consideration, first cam rocker mechanism still includes first rocker and reset spring, first rocker is "L" type structure, first rocker one end is inconsistent with first cam, the other end offsets with the sliding seat, reset spring acts on the sliding seat, thereby drive first rocker swing when first cam rotates, first rocker promotes the sliding seat again and slides towards the fourth direction, make reset spring energy storage when the sliding seat slides towards the fourth direction, after first cam continues to rotate, reset spring releases its elasticity restoring force and drives the sliding seat and slide towards the third direction, promote first rocker swing when the sliding seat slides towards the third direction again and reset.

The second cam rocker mechanism further comprises a second rocker which is of an L-shaped structure and comprises a first end with large weight and a second end with small weight, the first end of the second rocker is abutted to the second cam, the second end of the second rocker is roughly spherical and is hinged to the adapter plate in a spherical mode, the second cam is driven to swing when rotating, the second end of the second rocker pushes the adapter plate to slide towards the fourth direction, after the second cam continues to rotate, the first end of the second rocker drives the second rocker to swing and reset by means of gravity of the first end of the second rocker, and the second end of the second rocker pushes the adapter plate to slide towards the third direction.

Preferably, the guide groove is an annular groove which is in a waist track shape integrally and comprises two approximately parallel straight line sections and two curve sections connected between the two straight line sections, the sliding part is a flexible chain structure which is formed by connecting a plurality of carrying units end to end and is closed integrally, and the driving part is arranged on the outer side of the straight line section of the guide groove.

Preferably, the carrier unit is of an annular structure, and the bearing part is a groove arranged in the center of the carrier unit, so that when materials are placed in the groove, the carrier unit substantially surrounds the materials.

Preferably, the sliding member side is an uneven concave-convex shape formed by connecting a plurality of loading units, and the side of the driving member facing the sliding member is a tooth-shaped structure matched with the sliding member side, so that the sliding member side serves as the first engaging portion and the tooth-shaped structure serves as the second engaging portion.

Preferably, the stepping type conveying device further comprises a blanking hole, the blanking hole is arranged in the guide groove, and the material is conveyed to the position above the blanking hole from the sliding part and falls down from the blanking hole.

The utility model discloses following beneficial effect has:

1. the utility model can realize the four-way movement of the driving claw only by arranging two driving mechanisms which can move in the third and fourth directions to drive the movable seat and the adapter plate through the conversion of the adapter plate, and the two driving mechanisms can be arranged in parallel because of the consistent moving directions, thereby saving the space occupation and avoiding the movement interference between the two driving mechanisms;

2. the embodiment of the utility model provides a drive the motion of sliding seat and keysets through first cam rocker mechanism and second cam rocker mechanism for step-by-step conveyor is realized by mechanical structure drive completely, both the cost is reduced, also can not have like the risk such as step-by-step that loses that step motor had, first cam rocker mechanism and second cam rocker mechanism can all be associative with the lathe main shaft and guarantee the accuracy and with the synchronism of main shaft motion.

Drawings

FIG. 1 is a schematic view of a step conveyor in an embodiment;

FIG. 2 is a schematic view of a guide groove in the embodiment;

FIG. 3 is a schematic view of a carrier chain in an embodiment;

FIG. 4 is a schematic view of the drive pawl in an embodiment;

FIG. 5 is a schematic view of an interposer according to an embodiment;

FIG. 6 is a cross-sectional view taken along line E-E of FIG. 1;

FIG. 7 is a cross-sectional view taken at F-F of FIG. 1;

FIG. 8 is a schematic view of the embodiment with the drive pawl moved in direction A against the side of the carrier chain;

FIG. 9 is a schematic view of the embodiment in which the driving pawl moves toward C to push the carrier chain to slide in the guide slot;

FIG. 10 is a schematic view of the embodiment with the drive pawl moved away from the carrier chain in the direction B;

FIG. 11 is a schematic view of the embodiment with the drive pawl moved toward D to return to the initial position.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1-4, as a preferred embodiment of the present invention, a step conveyor is provided, which comprises a base having a guide groove 1, wherein the guide groove 1 is an annular groove having a shape of a kidney track as a whole, and comprises two substantially parallel straight sections 13 and two curved sections 14 connected between the two straight sections 13. Marching type conveyor still includes year thing chain 2 (as the slider), carries thing chain 2 including carrying thing unit 21, carries thing chain 2 and is the whole of being cyclic annular confined flexible chain structure that is formed by the end-to-end connection of several year thing unit 21, carries thing chain 2 sliding connection in guide way 1, and every year thing unit 21 is the loop configuration, and its center department is equipped with carries thing groove 22, places the material in carrying thing groove 22, then carries thing unit 21 and roughly surrounds the material to form the guard action to the material. The stepping type conveying device further comprises a driving claw 3 (as a driving piece) for pushing the loading chain 2 to slide in the guide groove 1, the driving claw 3 is arranged on the outer side of the straight line section 13, the driving claw 3 is connected to the movable seat 4 in a sliding mode, the driving claw 3 slides on the movable seat 4 so as to have a first sliding stroke relatively close to or far away from the first direction or the second direction of the loading chain 2, the movable seat 4 has a second sliding stroke along the third direction of the movement of the straight line section 13 or the fourth direction opposite to the third direction, and for more intuitive expression, in fig. 1, the first direction, the second direction, the third direction and the fourth direction are respectively recorded as a direction, a direction and a direction. When the movable seat 4 moves towards the direction C or the direction D, the driving claw 3 on the movable seat is driven to move; drive pawl 3 in turn has a sliding motion in directions a and B relative to movable abutment 4, i.e., drive pawl 3 is capable of four-way motion "back and forth and left and right" in the plane of guide slot 1.

The first sliding stroke and the second sliding stroke are both achieved by mechanical structure drive, wherein the first sliding stroke is converted into the third and fourth directions of movement by the adapter plate 5, as shown in fig. 1 and 5, the adapter plate 5 is disposed on one side of the movable seat 4 in the second direction (direction B), the adapter plate 5 has an adapter side in the first direction (direction a), the adapter side includes a first side 51 closer to the driving claw 3 and a second side 53 farther from the driving claw 3, the first side 51 and the second side 53 are connected by an adapter slope 52, an elastic member (not shown, such as a tension spring, a compression spring, etc.) acts on the driving claw 3 to make one end of the driving claw 3 in the second direction (direction B) always on the adapter side, so when the adapter plate 5 moves in the third direction (direction C) or the fourth direction (direction D) (as the third sliding stroke of the adapter plate 5), the drive pawl 3 is caused to slide from the first side 51 to the second side 53 or from the second side 53 to the first side 51 guided by the changeover ramp, thereby causing the drive pawl 3 to slide in the second direction (direction B) or the first direction (direction a) to effect a first sliding stroke.

After the conversion of the adapter plate 5, only two driving mechanisms capable of moving in the third direction and the fourth direction are needed to drive the movable seat 4 and the adapter plate 5, and the four-direction movement of the driving claw 3 can be realized. Such drive mechanisms may be known as rocker mechanisms, slider mechanisms, etc. Compared with the method that a driving mechanism moving in the first direction and the second direction is directly arranged to control the driving claw 3 and a driving mechanism moving in the third direction and the fourth direction is directly arranged to control the movable seat 4, the sliding stroke of the driving claw 3 is also converted into the movement of the adapter plate 5 moving in the third direction and the fourth direction, so that two driving mechanisms with the same moving direction can be arranged to realize control, and the two driving mechanisms with the same moving direction can be arranged in parallel, so that the occupied space can be saved, and the mutual moving interference can be avoided.

The two driving mechanisms with the same movement direction can be driving mechanisms such as a motor and an air cylinder, but based on the consideration of cost and the prevention of the problem of step loss of a stepping motor, further, the movement of the movable seat 4 and the adapter plate 5 is realized by a cam rocker mechanism, referring to fig. 6, the first cam rocker mechanism 6 is used for realizing the second sliding stroke of the movable seat 4, wherein the first cam rocker mechanism 6 comprises a first cam 61, a first rocker 62 and a return spring 63, the first rocker 62 is in an L-shaped structure, one end of the first rocker 62 is abutted against the first cam 61, the other end is abutted against the movable seat 4, the return spring acts on the movable seat 4, so that the first cam 61 drives the first rocker 62 to swing when rotating, the first rocker 62 pushes the movable seat 4 to slide towards the fourth direction (direction), the movable seat 4 enables the return spring 63 to store energy when sliding towards the fourth direction, after the first cam 61 continues to rotate, the return spring 63 releases its elastic restoring force to drive the movable seat 4 to slide toward the third direction (C direction), and the movable seat 4 pushes the first rocker 62 to swing and return when sliding toward the third direction (C direction). Referring to fig. 7, the second cam-rocker mechanism 7 includes a second cam 71 and a second rocker 72, the second rocker 72 is in an "L" shape, the second rocker 72 includes a first end 722 with a larger weight and a second end 721 with a smaller weight, the first end 722 of the second rocker is in contact with the second cam 71, the second end 721 of the second rocker is substantially spherical and is ball-hinged in the C-shaped member 54 fixedly connected to the adapting plate 5, so that the second cam 71 rotates to drive the second rocker 72 to swing, the second end 721 of the second rocker pushes the adapting plate 5 to slide in the fourth direction (direction D), after the second cam 71 continues to rotate, the first end 722 of the second rocker drives the second rocker 72 to swing and reset by its gravity, and the second end 721 pushes the adapting plate 5 to slide in the third direction (direction C).

The return of the cam-rocker mechanism by means of an elastic element (return spring 63) or by gravity (first end 722 of greater weight) is a technique known in the art, so that the skilled person can choose one or both of these two solutions as required to be applied to the mobile seat 4 and the adapter plate 5, without any technical obstacle for the present embodiment.

The first cam 61 and the second cam 71 are coaxially connected to the same rotating shaft 8, so that the first cam 61 and the second cam 71 can be driven simultaneously by arranging the rotating shaft 8 to rotate, the cost and the installation space are saved, the second sliding stroke and the third sliding stroke of the movable seat 4 and the adapter plate 5 can be alternately performed with time difference by arranging the first cam 61 and the second cam 71 to have different initial angles, and the driving claw 3 can perform A, C, B, D four-directional cyclic motion step by step to complete the stepping pushing work, which can be obviously realized.

When the step type conveying device is applied to the field of machine tools (such as stamping machine tools) and the like, more preferably, the rotating shaft 8 is connected with a main shaft of the machine tool, and the rotating shaft 8 and the main shaft move synchronously, so that the synchronism, the movement accuracy and the good rhythm of the step type conveying device are ensured under the condition that the machine tool runs at a high speed.

As shown in fig. 1 and 4, the carrier chain 2 is formed by connecting the annular carrier units 21, so that the side edge of the carrier chain 2 is uneven (the side edge of the carrier unit 21 is used as a first matching part), and the end 31 of the driving claw 3 facing the carrier chain 2 is a tooth-shaped structure matched with the shape of the side edge of the carrier chain 2, so that the driving claw 3 can be attached to the carrier chain 2 when moving towards the first direction (phase a), and the driving claw 3 can push the carrier chain 2 to slide in the guide groove 1 when moving towards the third direction (phase C). As shown in fig. 8-11, the working principle of the step-by-step conveying device is as follows:

1. the driving claw 3 moves towards the direction A and is attached to the side edge of the loading chain 2;

2. the driving claw 3 moves towards the direction C to push the carrying chain 2 to slide a carrying unit 21 in the guide groove 1;

3. the driving claw 3 moves towards the direction B and is far away from the carrying chain 2;

4. the driving pawl 3 moves towards D to reset to the initial position, completing one working cycle.

That is, each time the driving pawl 3 completes one working cycle, the carrier chain 2 slides in the guide groove 1 by the distance of one carrier unit 21, thereby realizing the step-by-step conveying. The carrying chain 2 rotates in the guide groove 1, and the driving claw 3 has the step distance of the length of one carrying unit 21, the moving range is small, the occupied space of the stepping type conveying device is small on the whole, and the stepping type conveying device is very suitable for small and medium-sized production occasions. In addition, the carrying chain 2 slides in the guide groove 1, so that the carrying load of the stepping type conveying device is small, and the operation is relatively stable.

In the embodiment, the first cam rocker mechanism 6 and the second cam rocker mechanism 7 are used for driving the movable seat 4 and the adapter plate 5 to move, so that the stepping type conveying device is completely driven by a mechanical structure, the cost is reduced, the risks of step loss and the like of a stepping motor are avoided, and the first cam rocker mechanism 6 and the second cam rocker mechanism 7 can be connected with a machine tool spindle to ensure the accuracy and the synchronism with the spindle movement.

As shown in fig. 1-2, a blanking hole 11 is further provided in the guide groove 1, and when the material on the carrying unit 21 moves to the position of the blanking hole 11 along with the carrying unit 21, the material falls from the blanking hole 11 to the next process flow. In the process of step-by-step conveying of materials, other structures can be additionally arranged on the base to perform processes such as coating, marking and the like. In addition, as shown in fig. 1, in the present embodiment, the blanking hole 11 is arranged in one of the curved sections 14, and the feeding position 12 of the material is selected in the other curved section 14, so as to utilize the advantage of the larger radial span of the waist-shaped runway-shaped annular groove, so that the length of the material from feeding to discharging is larger, thereby facilitating the spatial arrangement of different machines when two processes are connected.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A step-by-step conveyor of mechanical drive for carrying material which characterized in that: the device comprises a guide groove, a sliding part, a driving part, a movable support and an adapter plate, wherein the sliding part is connected in the guide groove in a sliding manner, a bearing part for bearing materials is arranged on the sliding part, a movable seat is arranged on the outer side of the sliding part, the driving part is connected on the movable seat in a sliding manner and is provided with a first sliding stroke in a first direction or a second direction which is relatively close to or far away from the sliding part, the movable seat is provided with a second sliding stroke in a third direction moving along the guide groove or a fourth direction opposite to the third direction,

the adapter plate is arranged on one side of the movable seat in the second direction, the adapter plate is provided with an adapter side edge positioned in the first direction, the adapter side edge comprises a first side edge closer to the driving piece and a second side edge farther away from the driving piece, the first side edge and the second side edge are connected with each other by an adapter slope, an elastic piece acts on the driving piece to enable one end of the driving piece in the second direction to be always abutted against the adapter side edge, the adapter plate is provided with a third sliding stroke towards the third direction or the fourth direction, when the adapter plate slides towards the third direction or the fourth direction, the driving piece slides from the first side edge to the second side edge or slides from the second side edge to the first side edge by the guidance of the adapter slope, so that the driving piece slides towards the second direction or the first direction to realize the first sliding stroke of the driving piece, when the movable seat slides towards the third direction or the fourth direction, the driving piece on the adapter plate is driven to slide towards the third direction or,

one side of the sliding part facing the driving part is provided with a first uneven matching part, one side of the driving part facing the sliding part is provided with a second matching part of which the shape is matched with that of the first matching part, the driving part moves towards the first direction and is attached to the sliding part, the first matching part and the second matching part are in contact matching, the sliding part is pushed towards the third direction to slide in the guide groove, then the driving part is far away from the sliding part towards the second direction and moves towards the fourth direction to reset, so that a work cycle is completed, the driving part correspondingly pushes the sliding part to slide in the guide groove once by one work cycle, and the sliding part is pushed to slide in the guide groove step by step.

2. The mechanically driven step conveyor of claim 1, wherein: the sliding mechanism further comprises a first cam rocker mechanism and a second cam rocker mechanism which are used for realizing a second sliding stroke and a third sliding stroke, the first cam rocker mechanism comprises a first cam, the second cam rocker mechanism comprises a second cam, and the first cam and the second cam are coaxially connected to the same rotating shaft.

3. The mechanically driven step conveyor of claim 2, wherein: the first and second cams are configured to: under the drive of the first cam and the second cam, the movable seat and the adapter plate alternately move with a time difference.

4. The mechanically driven step conveyor of claim 2, wherein: the rotating shafts of the first cam and the second cam are connected with a main shaft of the machine tool.

5. The mechanically driven step conveyor of claim 2, wherein: the first cam rocker mechanism further comprises a first rocker and a reset spring, the first rocker is of an L-shaped structure, one end of the first rocker is abutted to the first cam, the other end of the first rocker is abutted to the movable seat, the reset spring acts on the movable seat, the first cam is driven to swing when rotating, the first rocker pushes the movable seat to slide towards the fourth direction, the reset spring is enabled to store energy when the movable seat slides towards the fourth direction, after the first cam continues to rotate, the reset spring releases the elastic restoring force of the reset spring to drive the movable seat to slide towards the third direction, and the movable seat pushes the first rocker to swing and reset when sliding towards the third direction.

6. The mechanically driven step conveyor of claim 2, wherein: the second cam rocker mechanism further comprises a second rocker, the second rocker is of an L-shaped structure, the second rocker comprises a first end with large weight and a second end with small weight, the first end of the second rocker is abutted to the second cam, the second end of the second rocker is roughly spherical and is hinged to the adapter plate in a spherical mode, the second cam is driven to swing when rotating, the second end of the second rocker pushes the adapter plate to slide towards the fourth direction, after the second cam continues to rotate, the first end of the second rocker drives the second rocker to swing and reset through the gravity of the first end of the second rocker, and the second end of the second rocker pushes the adapter plate to slide towards the third direction.

7. The mechanically driven step conveyor of claim 1, wherein: the guide groove is an annular groove which is integrally in a waist track shape and comprises two approximately parallel straight line sections and two curve sections connected between the two straight line sections, the sliding part is an integrally annular closed flexible chain structure formed by connecting a plurality of carrying units end to end, and the driving part is arranged on the outer side of the straight line section of the guide groove.

8. The mechanically driven step conveyor of claim 7, wherein: the carrying unit is of an annular structure, and the bearing part is a groove arranged in the center of the carrying unit, so that when materials are placed in the groove, the carrying unit substantially surrounds the materials.

9. The mechanically driven step conveyor of claim 8, wherein: the side edge of the sliding part is in an uneven concave-convex shape formed by connecting a plurality of loading units, and the side edge of the driving part facing the sliding part is in a tooth-shaped structure matched with the side edge of the sliding part, so that the side edge of the sliding part is used as the first matching part, and the tooth-shaped structure is used as the second matching part.

10. The mechanically driven step conveyor of claim 1, wherein: still include the blanking hole, the blanking hole sets up in the guide way, and the material is carried to blanking hole top from the slider and makes the material follow the blanking hole falls.