SU747777A1 - Stepping conveyer - Google Patents

Description

The invention relates to conveyors reciprocating motion and 'can be used in transport devices of automatic lines for machining.

A well-known conveyor belt carrier, ⁵ feeders, including a base and a movable carriage, equipped with dogs and levers rotating on the axles of the carriage rod couplers, articulated parallelograms with rollers and earrings, also carrying ¹⁰ rollers that interact with the levers of the movable carriage £ lj .

The closest technical solution to the invention is a step conveyor for transporting parts of an automatic line, including a frame with positions for parts, a movable carriage and a drive [2J.

The purpose of the invention is to simplify the construction and increase the reliability of the conveyor.

This is achieved by the fact that in the proposed device, the movable carriage has a number of independent rollers equipped with lifting levers and brackets with adjusting screws, and a device for turning the rollers of the lifting levers.

'At the same time, the device for independently turning the rollers of the lifting arms is made in the form of a rod having a roller and forming a multi-link articulated parallelogram with a movable carriage, the upper joints of which have dogs with probes, and the rollers have grooves. In addition, the drive is made in the form of a cam crank mechanism, while the cam is mounted to interact with the multi-link articulated parallelogram roller, and the connecting rod is rigidly connected to the frame: the movable carriage is equipped with a locking device made in the form of a two-way power cylinder installed between adjacent rollers lifting levers.

In FIG. 1 shows a step conveyor, top view (one section); in FIG. 2 a section A-A of FIG. 1; in FIG. 3 - the same s 74 777 (the locking mechanism is included in Fig. 4 - section BB of Fig. 2.

Step _; the conveyor consists of sections, each of which includes a frame 1 with positions 2-8 for parts serving ₅ for installing the transported parts, and rollers 9 on which the movable carriage 10 is mounted. The carriage is a rigid welded structure and consists of two sidewalls connected between the slats. Rollers 12 are mounted on the carriage 10 in bearings 11, on which the lifting arms 13 are mounted in pairs, which, when the rollers 12 are rotated, raise the product 14 above the ₁₅ positions. To set and hold the lifting levers 13 in their initial position, the brackets 12 are equipped with brackets 15 based on the adjusting screws 16 screwed into the connecting plates _{20 of the} movable carriage. Using the same brackets 15, the lifting arms 13 can be combined into sections according to a predetermined number of pieces. For this, the upper ends of the brackets _{25 are} connected by a flexible connection 17.

Turning the rollers 12, for lifting de (~ hoists above the conveyor positions and moving the movable carriage with the chain for transporting the raised parts to the lifting positions, by gay using the cam crank mechanism 18, which the movable carriage is equipped with. This mechanism includes a worm a gearbox 19 with a drive motor ₃₅ Gatep 20. A gearbox 19 is rigidly attached to the movable carriage using a bracket 21. A cam 22 and a crank 23 with a connecting rod 24 are mounted on the output shaft of the worm gearbox. The second ₄₀ end is the connecting rod 24 in the middle By means of the bracket 25 and pin 26, it is connected to the conveyor frame, and the cam 22 interacts with the roller 27 of the device for turning the rollers of the lifting levers, made ₄₅ in the form of a rod 28, forming a multi-link articulated parallelogram with a movable carriage, the lower levers of which 29 are pivotally connected to the rod and the top - with rollers, which have their upper pawl hinges 30 that are fastened to them by means of axles 31. In turn, the pawls 30 are provided with feelers 32, which control the presence of items on the conveyor position and the latter in the presence of ₅₅ of them, the dogs are disengaged from the rollers 12. To engage the dogs with rollers, the grooves 33 are made in the latter, into which, under the action of

4 .

the teeth of the dogs enter the weight, and when the part clicks on the probe, the dog turns around its axis and its tooth comes out of groove 33.

When using a stepping conveyor in an automatic line in which several machines perform the same operation and there is a need to delay the part at the loading position of one of these machines, its movable carriage 10 has a locking mechanism for the dogs of two adjacent rollers of the lifting arms, which is made in the form of a hydraulic or a double-acting pneumatic cylinder 34, whose rods interact with the dogs, disengaging them from the rollers 12 at the command of the automatic pinion machine.

The step conveyor operates as follows.

When there are no parts at the positions of the conveyor, all the dogs 30 are in gear with the rollers under their own weight 12. When the engine 20 is turned on, the cam 22 starts to rotate with the crank 2 3. At the same time, the cam 22 begins to interact with the roller 2 7.

Since the bearings of the cam 22 are fixed motionless relative to the movable carriage, the roller 2 7 begins to mix to the left and through the rod 28, levers 29 and dogs 30, it transmits this movement to the rollers 12, which begin to turn clockwise. Together with them, the lifting arms 13 begin to rotate. Since the crank 2 3 is fixed on the same shaft with the cam, it also starts to rotate, as it is connected to the connecting rod 24, which is pivotally attached to the conveyor frame 1 and does not move maybe the movable carriage begins to move to the left together with the lifting lifting arms 13. As soon as the roller 2 7 passes along the cam curve corresponding to the lifting amount, the lifting arms with their prisms pass exactly at the centers of the prisms of the conveyor positions, and the crank with Atun pass the point of maximum displacement to the left and begin to move the movable carriage to the right as long as the crank will not turn on 180® which corresponds to the rightmost position of the movable carriage or conveyor step. At this time, the prisms of the lifting levers pass exactly in the center of the prisms of the conveyor positions., And, if at that time they carried parts, then they would be placed precisely on the prisms of the position. With further

777 7.

turning the cam and the crank, the lifting levers occupy their lower position, and the movable carriage returns to its original position and the second wild begins. The conveyor runs continuously for the entire duration of the automatic line. Thus, the conveyor idle occurs.

Consider the operation of the conveyor in the process of transporting parts.

If a part arrives at position 2 of the conveyor, then in the next cycle the lifting arms raise the part above the position, and when moving the carriage, it is transferred to the next position, and so on until the last>. Parts are delivered to the conveyor continuously, therefore, as soon as the part moves from position 2 to position 3, a new part arrives at position 2 again. The part located at position 3 presses the probe 32 and disengages the dog 30 at posid 2. Since the arms of the rollers 12 of the second and third positions are connected by a flexible connection, but at position 4 of the part, the dog lever 13 of the third position is engaged roller 12, and in the process of the next cycle, the lifting levers begin to rise and through the flexible connection 17 raise the levers of the second position, that is, at the same time the two parts are mixed by one step. Thus, those lifting arms that are connected by such a link in the section move all the parts that are at the positions of this section by one step.

Therefore, if from the second and eighth positions, auto operators take away the details *. then during the next cycle, the part from position 2 moves to position 3, and the parts from positions 4-7 are mixed by one step. If parts are in all positions, then all the dogs are disengaged, since the parts press on the probes 32 and the rollers 12 do not rotate, although the cam 22 interacts with the roller 2 7. In this case, the movable carriage makes a reciprocating movement, but does not transfer the part 'carries out. fifty

If parts are located at all positions except the eighth, then from positions 4-7 they will be mixed one step, and at positions 2 and 3 they will remain in place, since positions 3 and 4 are not connected by a flexible connection. ^ In the next cycle, when the position is released 4, parts from positions 2 and 3 also move one step.

If from positions 8 and 3 parts are loaded on the machine and during the next cycle from position 3 the machine загрузкаη should be loaded, then the machine gives a command to turn on the locking mechanism, cylinder 34 is turned on and its rods disengage these parts from the linkage of the lever train of positions 2 and 3 during the next cycle they do not move, while other parts on the conveyor can mix. After loading the machine, the lock cylinder is turned off and these positions continue to function normally.

Claims (2)

This invention relates to conveyors. reciprocating motion and can be used in transport devices of automatic lines for machining. A rod conveyor filler is known that includes a base and a movable carriage equipped with dogs and levers rotating on the axles of the arms of the carriage rods, articulated parallelograms with rollers and earrings that also carry rollers that interact with the levers of the mobile carriage ij, the closest technical The solution to the invention is a stepping conveyor for transporting parts of an automatic line, including a frame with parts positions, a movable carriage and a 2J drive. The purpose of the invention is to simplify the design and increase the reliability of the conveyor. This is achieved by the fact that in the proposed device the movable carriage has a number of independent rollers equipped with lifting arms and brackets with adjusting screws and a device for rotating the rollers of the lifting arms. In this case, the device for independent rotation of the rollers of the lifting levers is made in the form of a rod with a roller and forming a multi-link articulated parallelogram with a movable carriage, the upper hinges of which have dogs with probes, and the rollers - grooves. In addition to this, the drive is made in the form of a cam crank mechanism, while the cam is mounted to interact with the roller of the multi-link articulated parallelogram, and the rod is rigidly connected to the frame: the moving carriage is equipped with a locking device made in the form of a two-way ram installed between adjacent lift arm rollers. FIG. 1 shows a shaggy conveyor, top view (one section); in fig. 2, section A-A of FIG. one; in fig. 3 - the same 74 (locking mechanism included): in FIG. 4 - section bb FIG. 2. The stepping conveyor consists of ceKimit, each of which includes the frame 1 with positions 2-8 for parts, C71: for installing the parts to be transported, and rollers 9, on which the moving carriage 1O is mounted. The carriage is a rigid welded structure and consists of two sidewalls interconnected by slats. Rollers 12 are mounted on carriage 10 in bearings 11, on which lifting arms 13 are mounted in pairs, which, when turning rollers 12, lift product 14 above poses. In order to set and hold the lifting arms 13 in the initial position, the brackets 15 are mounted on the rollers 12 and are supported on the adjusting screws 16, which are screwed into the connecting strips of the movable carriage. Using the same brackets 15, the lifting arms 13 can be united in the section by a predetermined number of pieces. For this, the upper ends of the brackets are connected by a flexible link 17. Rotate the rollers 12 to lift the ental above the conveyor positions and move the movable carriage with the transport chain parts for the following positions are realized with the help of a cam crank connecting rod mechanism 18, which is equipped with a movable carriage. This mechanism includes a worm gear 19 with a 2 O drive motor. The gear 19 with a bracket 21 is rigidly attached to the movable carriage. On the output shaft of the worm gearbox, the cam 22 and crank 23c are mounted by a connecting rod 24. The second end of the connecting rod 24 is connected by a bracket 25 and a pin 26 to the frame. the conveyor, and the cam 22 interacts with the roller 27 of the device for rotating the rollers of the lifting arms, made in the form of a rod 28, forming a multi-link articulated parallelogram with the mobile carriage, the lower ends of the arms 29 of which are articulated with the rod, and the upper ends with rollers , and their upper hinges have DZ dogs that are attached to them using axes 31. In turn, the DZ dogs are equipped with probes 32, which control the presence of parts at conveyor positions, and if they have the last dogs, they are disengaged from the rollers 12. To engage the dogs with rollers on the latter, grooves 33 are made into which, under the action of their own weight, the dog teeth enter and when the children slide on the feeler gauge, the dog turns around its axis and its tooth emerges from the groove 33. When using a step conveyor an automatic line in which several machine operators perform the same operation and there is a need to delay the part at the loading position of one of these machines, its movable carriage 1O has a locking mechanism for dogs of two adjacent rollers of the lifting arms, which Full a hydraulic or pneumatic) acting dvoynoro shpindra 34, which interact with the pawls rods, kx conclusion of engagement with the rollers 12 to command the automatic machine pine., Works stepper conveyor follows. When there are no parts at the positions of the conveyor, all the pawls 30 under the action of their own weight are engaged with the rollers 12. When the engine 2O is turned on, the cam 22 rotates with the crank 23. The cam 22 begins to interact with the rider 27. Since the cam bearings 22 fixed motionless relative to the movable carriage, then the roller 27 starts to mix to the left and through the pull 28, the levers 29 and the pawl 30 it transmits this movement to the ilBM 12, which begin to rotate clockwise. Together with them, the lifting arms 13 also begin to turn. Since the axle 23 is fixed on the same shaft with the cam, it also begins to rotate, and since it is connected to the connecting rod 24, which is hinged to the frame 1 of the conveyor and cannot move, the movable carriage begins to move to the left together with the lifting arms 13. As soon as the roller 2 7 runs along the cam curve corresponding to the lift, the lifting arms with their prisms pass exactly along the prism centers of the conveyor positions, and the crank with the rod the maximum movement to the left begins to move the movable carriage to the right until the crank turns 180), which corresponds to the extreme right position of the movable carriage or the conveyor pitch. At this time, the prisms of the lifting arms pass exactly in the center of the conveyor prisms , and, if at this time they were not carrying the details, then they would be placed exactly on the prisms of the position. Upon further rotation of the vehicle and crank, the lifting arms take their lower position, and the movable carriage returns to its original position and the second cycle begins. The conveyor is working continuously for the entire time of the automatic line. Thus, the idling of the conveyor occurs. Consider the work of the conveyor in the process of transporting parts. If at the position 2 of the conveyor belt of the part, then at the next cycle, the lift arms raise the part above the position, and when moving the carriage it moves from the next position, and so on to the last one. The parts on the conveyor are not interrupted, so as soon as the part from position 2 shifts to position 3, the new amp and hoist comes to position 2 again. The part located at position 3 presses the probe 32 and disengages the pawl 30 at position 2. Since the arms of the rollers 12 of the second and third positions are connected by a flexible link, and at position 4 there are still no parts, the paw of the levers 13 the third position is engaged with the roller 12, and in the course of the next cycle, the lifting arms start to rise and through the flexible link 17 lift the arms of the second position, i.e., at the same time, two parts move by one step. Thus, those lifting levers that are connected by such a link in the section move all the parts that are in the positions of this section by one step. Consequently, if from the second and eighth positions the auto operators take details of j. then during the subsequent cycle, the part from position 2 moves to position 3, and the parts from position 4-7 move one step. If all parts are in all positions, all the pawls are disengaged because the parts press the probes 32 and the rollers 12 do not turn, although the cam 22 interacts with the roller 27. In this case, the movable carriage returns and moves the part does not implement. When parts except for the eighth are parts that are white, then from position 4-7 they move one step and at positions 2 and 3 remain in place, because positions 3 and 4 are not combined by a flexible link. During the next cycle, when position 4 is released, parts from positions 2 and 3 are also mixed in one step. 7 77 If, from positions 8 and 3, parts are loaded on the machine and during the next cycle loading must occur at position 3, the machine gives the command to turn on the locking mechanism, the cylinder 34 is turned on, and its rods are disengaged from the position lever 2 pawl. and 3, these parts are not intermixed during the next cycle, while the remaining parts on the conveyor can be moved. After the machine has been loaded, the locking cylinder is turned off and these positions continue to function normally. Claim 1. Stepping conveyor for transporting parts of an automatic line, including a frame with positions, a movable carriage and a drive, characterized in that, in order to reinforce the design and increase reliability, the mobile carriage has independent rollers equipped with a lift and levers and brackets with adjusting screws, and a device for turning the rollers of the lifting arms. 2. The conveyor according to claim 1, which is different from the fact that the device for independent rotation of the rollers of the lifting arms is made in the form of a rod having a roller and forming a multi-link articulated parallelogram with a movable carriage, the upper hinges of which have dogs with probes, and the rollers - grooves. 3. The conveyor of PP, 1 and 2, characterized in that the drive is made in the form of a cam crank drive mechanism, the cam is installed with the ability to interact with the roller of the multi-link articulated parallelogram, and the connecting rod is rigidly connected to | kasom. 4i Conveyor on PP. 1 and 2, casting by the fact that the movable kite is provided with a locking device, designed in the form of a two-way ram, mounted between adjacent rollers of the lifting arms. Sources of information taken into account in the examination 1. The author's certificate of the USSR 410915, cl. B 65 G 25 / GS, 1971. 2. Authors certificate of the USSR 9 518429, cl. B 65 q 25/04, 1973.   t L Z i , ISi € ifi Sh i I R ABOUT. at  -tb-b