CN110790180B

CN110790180B - Tray lifting mechanism

Info

Publication number: CN110790180B
Application number: CN201911043934.2A
Authority: CN
Inventors: 尤松
Original assignee: Jiangsu Morning Cleaning Daily Chemical Co ltd
Current assignee: Jiangsu Morning Cleaning Daily Chemical Co ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2021-04-23
Anticipated expiration: 2039-10-30
Also published as: CN110790180A

Abstract

The invention relates to a tray lifting mechanism for automatic continuous feeding or discharging in a toothbrush production line, which comprises a rack, wherein the rack is provided with a lower layer frame and an upper layer frame, a plurality of stand columns are connected between the upper layer frame and the lower layer frame, a lifting mechanism is arranged in the rack and used for lifting a tray, and an inlet and an outlet for facilitating the inlet and the outlet of a trolley for conveying the tray are laterally arranged on the rack between the lower layer frame and the upper layer frame; the lifting mechanism is characterized by comprising lifting seats which are arranged on two sides of a tray parallel to the inlet and outlet directions and can lift synchronously, wherein the opposite inner sides of the lifting seats are respectively connected with a supporting bottom frame for supporting the tray on the lowest layer, slide block guide rail mechanisms are respectively fixed on the outer sides of the lifting seats, each group of slide block guide rail mechanisms are respectively driven by a chain mechanism, and the two groups of chain mechanisms are driven by a synchronous chain wheel mechanism to lift synchronously; and position sensors for detecting the upper limit position and the lower limit position of the tray are respectively arranged on the racks at the top side and the bottom side of the lifting mechanism.

Description

Tray lifting mechanism

Technical Field

The invention relates to the technical field of feeding and discharging equipment of an automatic toothbrush production line, in particular to a tray lifting mechanism for automatic continuous feeding or discharging.

Background

On an automatic semi-automatic flow production line of toothbrushes, trays for placing toothbrushes or toothbrush boards need to be transferred among processes, and automatic loading or unloading of empty or full-loaded trays is also needed in the same process; for example, the unloaded pallets are intensively stacked and sent to a production line, then the pallets are lifted layer by layer to a fixed material receiving height, the toothbrush from the production line is received for working, after the pallets are fully loaded, a manual or mechanical arm is moved away, the pallets on the lower layer are lifted to a lifting height, the material is continuously received, and the operation is repeatedly circulated, so that the continuous automatic tray supply is realized. On the contrary, full-load tray also needs to carry out the successive layer and piles up putting, and among the prior art, the automation of the automatic supply of the empty tray of this kind of material loading and the automation of full-load tray are piled up and are put the operation and require highly to artifical dependency, influence the continuity of production beat, and production efficiency is low.

Disclosure of Invention

The invention provides a tray lifting mechanism aiming at the feeding requirements of an upper line and a lower line of trays in a toothbrush production line in the prior art so as to realize the mechanized continuous feeding or stacking of the trays.

The invention aims to provide a tray lifting mechanism which comprises a rack, wherein the rack is provided with a lower layer frame and an upper layer frame, a plurality of stand columns are connected between the upper layer frame and the lower layer frame, a lifting mechanism is arranged in the rack and used for lifting a tray, and an inlet and an outlet which are convenient for a trolley for conveying the tray to enter and exit are arranged laterally on the rack between the lower layer frame and the upper layer frame; the lifting mechanism comprises lifting seats which are arranged on two sides of the tray parallel to the inlet and outlet directions and can lift synchronously, the opposite inner sides of the lifting seats are respectively connected with a supporting bottom frame for supporting the tray on the lowest layer, the outer sides of the lifting seats are respectively fixed with a slider guide rail mechanism, each group of slider guide rail mechanisms are respectively driven by a chain mechanism, and the two groups of chain mechanisms are driven by a synchronous chain wheel mechanism to lift synchronously; and position sensors for detecting the upper limit position and the lower limit position of the tray are respectively arranged on the racks at the top side and the bottom side of the lifting mechanism.

In the lifting mechanism of the invention, trays with certain stacking height enter and exit the lifting mechanism through the inlet and the outlet of the conveying trolley, the two lifting seats are connected with the synchronously lifting supporting bottom frame for supporting two sides of the bottom of the stacked trays, the two lifting seats realize synchronous lifting through the driving of the chain lifting mechanism, the tray lifting mechanism can be used singly, and the lifting mechanism can be lifted layer by layer to continuously and mechanically supply the empty tray, or the highest position of the lifting mechanism descends layer by layer to stack full-load trays, or two full-load trays can be used together, one tray is used for continuously supplying empty trays, the other tray is used for descending layer by layer to stack full-load trays, and the full-load trays are transferred by a transfer cart after being fully loaded, so that the mechanization and automation level of the toothbrush production line is improved.

In order to ensure that the two lifting seats can lift synchronously, the chain mechanism comprises a vertically arranged chain box, a first chain wheel is arranged at the bottom side of the chain box, a second chain wheel is arranged at the top side of the chain box, a lifting chain is connected between the first chain wheel and the first chain wheel, a vertical groove is arranged on the side wall of the chain box corresponding to one side of the slide block guide rail in a matching way, vertical guide rails are respectively arranged at two sides of the groove, the two vertical guide rails are respectively connected with the slide blocks in a matching way, a synchronous connecting block is connected between the two slide blocks, and the synchronous connecting block extends into the groove and is fixedly connected with the lifting chain to; the synchronous chain wheel mechanism comprises a driving motor fixed on the middle section of the bottom layer frame, two driving chain wheels with the same size are connected to an output shaft of the driving motor, each driving chain wheel is connected with a driven chain wheel through a synchronous chain in a transmission mode, wheel shafts of the two driven chain wheels are coaxially connected with first chain wheels on the lower sides of the two chain boxes respectively, and the driven chain wheels are connected with the bottom layer frame through bearing seats in a supporting mode. In the chain lifting mechanism, two driving chain wheels with the same size on an output shaft of a driving motor respectively and synchronously drive two driven chain wheels to rotate at the same speed, and the two driving chain wheels rotating at the same speed respectively drive respective chain wheel lifting mechanisms to realize synchronous lifting motion so as to drive two lifting seats to synchronously lift.

In order to facilitate separation of the tray on the top layer from other trays on the lower layer in the lifting mechanism, the supporting mechanism is arranged on two sides of the tray corresponding to the upper layer frame in a matched mode and comprises a supporting plate assembly which is synchronously opened and closed from the outer side of the tray to the side edge of the tray, the side edge of the supporting plate assembly is clamped with the side edge of the tray in a matched mode, a clamping cylinder is fixed on the upper layer frame on the outer side of the supporting plate assembly, and the end portion of a telescopic rod of the clamping cylinder is fixedly connected with the supporting plate assembly. According to the supporting mechanism, the two cylinders which synchronously act on the two sides of the tray realize the synchronous opening and closing of the supporting plate assembly so as to clamp and fix the two side edges of the tray, so that the tray on the top layer is conveniently separated from other trays on the lower part, and the tray is conveniently translated and transported.

For the centre gripping tray, the layer board subassembly includes the board that moves that the level set up, it is connected with centre gripping cylinder to move board one end, and the downside that moves the board is equipped with slider guide rail mechanism, moves the board other end and is equipped with the riser perpendicularly, one side that the riser corresponds the tray is fixed with the layer board that is used for the solid tray bottom lateral margin in support.

In order to facilitate the stable stop of the top-layer tray, the upper sides of the inlet and the outlet of the rack are provided with limiting baffles for the outer side walls of the top-layer tray to abut against; the utility model discloses a spacing baffle, including layer board, swing piece, tray, telescopic link, swing piece, support shaft, little cylinder, the layer board upside is connected with the swing piece, the middle part of the vertical direction of swing piece passes through the back shaft swing with the layer board and is connected, be connected with little cylinder on the layer board, the upper end of swing piece rotates with the telescopic link of little cylinder to be connected, the lower extreme of swing piece pushes away with tray cooperation top and is used for promoting the tray to the spacing baffle direction, the tray is equipped with the step breach that the side was opened with swing piece complex position, the step breach is close to the side of spacing baffle and supports with the cooperation of swing piece and lean on, the swing piece is supported under the promotion of. In the structure, after the tray is held by the holding mechanism, in order to prevent loading the toothbrush, the tray moves in the other direction in a string mode, the small air cylinder stretches and retracts to drive the swing block to swing, the lower end of the swing block is matched with the side end of the notch of the tray to push the tray to the side of the limit baffle plate and stably stop the tray, the tray loaded on the top layer is stably fixed through the bidirectional fixing effect of the holding mechanism and the small air cylinder swing mechanism, and the tray is prevented from moving in a string mode in the loading process and accurately loaded due to influence.

The limiting device is characterized in that the limiting device is convenient for limiting the inner sides of the stacked trays entering the lifting mechanism to abut against, two vertical baffles used for limiting the entering depth of the stacked trays entering the lifting mechanism are arranged between the upper layer frame and the lower layer frame between the two supporting bottom frames, and the vertical baffles are used for limiting the outer edges of the trays far away from the inlet and the outlet. The limiting baffle is used for limiting the position of the tray, which enters the lifting mechanism from the inlet and the outlet and stops, so that the stopping position of the tray is accurately limited.

Furthermore, the vertical baffle is right-angle section steel which is arranged by matching the corner parts of two ends of the outer side edge corresponding to the tray, and the upper end and the lower end of the vertical baffle are respectively fixed with the upper-layer frame and the lower-layer frame.

In order to stably support the stacked trays, the bottom layer frame is provided with a bottom layer supporting plate corresponding to the lowest limit position of the lifting seat, and the bottom layer supporting plate is connected with the bottom side of the supporting bottom frame which is lowered to the lower limit position in a supporting mode.

Drawings

Fig. 1 is a perspective view of the tray lifting mechanism of the present invention.

Fig. 2 is a perspective view of the tray lifting mechanism of the present invention in another direction.

Fig. 3 is a schematic view of a single-sided chain lifting mechanism.

FIG. 4 is a schematic view of a timing sprocket mechanism on the bottom frame.

Fig. 5 is a schematic structural view of a single-side holding mechanism on the upper frame (no tray is placed).

Fig. 6 is a schematic structural view of a single-side holding mechanism on the upper frame (tray placement).

Fig. 7 is a schematic structural diagram of an elevating tray sorter used in combination with two tray elevating mechanisms.

Wherein, 1, a frame; 201 lifting seat; 202 supporting the bottom frame; 203 vertical guide rails; 204 sliding blocks; 205 a chain case; 206, slotting; 207 driving the motor; 208 a drive sprocket; 209 a driven sprocket; 210 a first sprocket; 211 a follower sprocket; 212 a limit stop; 213 bottom pallet; 3, a supporting mechanism; 301 clamping the cylinder; 302, moving the plate; 303 vertical plates; 304 a pallet; 305 a wobble block; 306 a small cylinder; 307 a limit baffle; 4, a tray; 5, a sensor.

Detailed Description

As shown in fig. 1-6, the tray lifting mechanism of the present invention comprises a frame 1, the frame 1 is provided with a lower frame and an upper frame, a plurality of vertical columns are connected between the upper frame and the lower frame, a lifting mechanism is arranged in the frame and used for lifting a tray 4, and an inlet and an outlet for facilitating the entrance and exit of a trolley for transporting the tray are laterally arranged on the frame between the lower frame and the upper frame; the lifting mechanism comprises lifting seats 201 which are arranged on two sides of the tray 4 parallel to the inlet and outlet directions and can lift synchronously, the opposite inner sides of the lifting seats 201 are respectively connected with a supporting bottom frame 202 for supporting the tray on the lowest layer, the outer sides of the lifting seats 201 are respectively fixed with a slider guide rail mechanism, each group of slider guide rail mechanisms are respectively driven by a chain mechanism, and the two groups of chain mechanisms are driven by a synchronous chain wheel mechanism to lift synchronously; and position sensors 5 for detecting the upper limit position and the lower limit position of the tray are respectively arranged on the racks at the top side and the bottom side of the lifting mechanism.

The chain mechanism of this embodiment includes a vertically disposed chain case 205, a first sprocket 210 disposed on a bottom side of the chain case 205, a second sprocket disposed on a top side of the chain case 205, and a space between the first sprocket 210 and the first sprocketIs connected withA lifting chain is connected, a vertical slot 206 is arranged on the side wall of the chain box 205 corresponding to one side of the slide block guide rail in a matching way, vertical guide rails 203 are respectively arranged on two sides of the slot 206, the two vertical guide rails 203 are respectively connected with the slide blocks 204 in a matching way, a synchronous connecting block is connected between the two slide blocks 204 and stretches into the synchronous connecting blockThe groove 206 is fixedly connected with the lifting chain to realize synchronous lifting; the synchronous chain wheel mechanism comprises a driving motor 207 fixed at the middle section of the bottom layer frame, two driving chain wheels 208 with the same size are connected to an output shaft of the driving motor 207, each driving chain wheel 208 is connected with a driven chain wheel 209 through synchronous chain transmission, wheel shafts of the two driven chain wheels 209 are coaxially connected with first chain wheels 210 on the lower sides of the two chain boxes 205, and the driven chain wheels 209 are connected with the bottom layer frame through bearing seats in a supporting mode. In the chain lifting mechanism of this embodiment, the two driving sprockets 208 with the same size on the output shaft of the driving motor 207 respectively and synchronously drive the two driven sprockets 209 to rotate at the same speed, and the two driving sprockets 208 rotating at the same speed respectively drive the respective sprocket lifting mechanisms to realize synchronous lifting motion so as to drive the two lifting seats 201 to synchronously lift.

In order to separate the tray 4 at the top layer from other trays at the lower layer in the lifting mechanism after the trays are filled with toothbrushes, the lifting mechanism is arranged at two sides of the tray corresponding to the upper layer frame in a matched manner and comprises a supporting plate component synchronously opened and closed from the outer side of the tray to the side edge of the tray, the side edge of the supporting plate component is clamped with the side edge of the tray in a matched manner, a clamping cylinder 301 is fixed on the upper layer frame at the outer side of the supporting plate component, and the end part of a telescopic rod of the clamping cylinder 301 is fixedly connected with the supporting plate component; for clamping the tray, the supporting plate assembly comprises a horizontally arranged moving plate 302, one end of the moving plate 302 is connected with a clamping cylinder 301, a slider guide rail mechanism is arranged on the lower side of the moving plate 302, a vertical plate 303 is vertically arranged at the other end of the moving plate 302, and a supporting plate 304 used for supporting the bottom side edge of the tray is fixed on one side of the vertical plate 303 corresponding to the tray. The mechanism is held in support of this embodiment, two synchronous motion's of tray both sides centre gripping cylinder 301 realize the synchronous opening and shutting of layer board subassembly to the both sides edge of centre gripping tray, the separation of the other trays in top layer tray and lower part of being convenient for, the translation of the tray of being convenient for is transported.

In addition, as twisted in fig. 5 and fig. 6, in order to facilitate the top layer tray to be fixed along the direction vertical to the clamping direction, the upper side of the inlet and outlet of the rack is provided with a limit baffle 307 for the outer side wall of the top layer tray to abut against; the upper side of the supporting plate 304 is connected with a swing block 305, the middle part of the swing block 305 in the vertical direction is connected with the supporting plate 304 in a swing mode through a supporting shaft, the supporting plate 304 is connected with a small air cylinder 306, the small air cylinder 306 is horizontally arranged, a cylinder seat is hinged to the supporting plate 304, the upper end of the swing block 305 is rotatably connected with a telescopic rod of the small air cylinder 306, the lower end of the swing block 305 is matched with the tray to push the tray to the direction of a limit baffle 307, a step notch with an opened side is arranged at the position where the tray is matched with the swing block 305, the side end, close to the limit baffle 307, of the step notch is matched and abutted with the swing block 305, the swing block 305 swings under the pushing of the small air cylinder 306 to enable the lower end to abut against the end of the step. In the structure, after the tray 4 is held by the holding mechanism, in order to prevent loading the toothbrush, the tray 4 moves in the other direction, the small cylinder 306 stretches and retracts to drive the swing block 305 to swing, the lower end of the swing block 305 is matched with the side end of the notch of the tray 4 to push the tray 4 to the side of the limit baffle 307, the tray 4 at the top layer is stably fixed by the holding mechanism and the small cylinder to drive the swing block to realize the bidirectional fixing, and the movement in the loading process is prevented, so that the accurate loading is influenced.

In order to facilitate the limiting and abutting of the inner sides of the stacked trays entering the lifting mechanism, two vertical baffle plates 212 used for limiting the entering depth of the stacked trays entering the lifting mechanism are arranged between the upper layer frame and the lower layer frame between the two supporting bottom frames 202, and the vertical baffle plates 212 are used for limiting and abutting against the outer edges of one sides, far away from the inlet and the outlet, of the trays so as to limit the stopping positions of the stacked trays entering the lifting mechanism. In this embodiment, the vertical baffle 212 is a right-angle steel that is arranged by matching the corner parts of the two ends of the outer edge corresponding to the tray, and the upper end and the lower end of the vertical baffle 212 are respectively fixed with the upper layer frame and the lower layer frame.

In addition, in order to stably support the stacked trays, the bottom layer frame is provided with a bottom layer supporting plate 213 corresponding to the lowest limit position of the lifting seat, and the bottom layer supporting plate 213 is connected with the bottom side of the supporting bottom frame 202 which is lowered to the lower limit position.

The tray lifting mechanism of the invention can have two working modes, the first mode is as follows: the lifting seat lifts the superposed empty trays layer by layer from the lowest position so as to enable the production line to place the toothbrush or toothbrush board workpieces in sequence; the second method is as follows: the lifting seat descends layer by layer from the highest position, and full-loaded toothbrush tray workpieces are stacked layer by layer on the supporting bottom frame.

The working process of the first working mode is as follows: the lifting seat 201 is lowered to the lowest position of the supporting bottom frame 202, a plurality of layers of overlapped empty trays are conveyed into a lifting mechanism at the feeding side by a tray conveying vehicle, the lifting seat 201 rises to a certain height, the supporting bottom frames 202 at two sides lift the trays at the bottom layer and simultaneously drive the trays at each layer to rise, so that the trays are supported on the lifting seat 201 of the lifting mechanism, then the lifting seat 201 is lifted upwards by the driving of the driving motor 207, so that the trays at the top layer are lifted to the set height, in order to monitor the height reached by the trays at the top layer, the height reached by the trays at the top layer can be monitored by a position sensor which is preset on an upper layer frame, when the trays at the top layer are contacted with the position sensor, the driving motor 207 stops running, the trays stop rising, at the moment, two clamping cylinders 301 of the supporting mechanism act, so that the supporting plates 304 support and clamp the trays 4 at the top layer from two sides, and the lifting, descending by about the height of one layer of tray to separate the tray at the top layer from other trays, then actuating by a small air cylinder 306 to enable a swing block 305 to swing to push the tray to abut against a limit baffle 307 for locking, and at the moment, the tray at the top layer stops at a material receiving position stably to wait for receiving toothbrush workpieces conveyed by a production line to be sequentially received and placed; when the tray is fully loaded, the fully loaded tray is removed through the translation and transportation of a manipulator or other transportation modes; the feeding process of one tray is completed, the lifting mechanism acts again, the lifting seat 201 is lifted again to enable the current top-layer tray to rise to the set height, the next-layer tray is lifted, clamping and limiting are abutted to locking, the current top-layer tray is enabled to wait for loading, the process is repeatedly circulated, and mechanical feeding of the tray is achieved. The second working process is as follows: firstly, the supporting bottom frame of the unloaded lifting mechanism is lifted to the highest position, the tray of the full load is moved to the matching position to be placed on the supporting bottom frame 201 through the translation mechanism or other carrying mechanisms of the production line, at the moment, if a certain number of trays are stacked, the stacking is continued, and the stacking lifting mechanism correspondingly descends one layer.

The tray lifting mechanism can be used singly, the lifting mechanism is lifted layer by layer to carry out continuous mechanical supply of empty tray trays, or the highest position of the lifting mechanism is lowered layer by layer to stack full-loaded trays layer by layer, or the lifting mechanism can be used in combination, one tray is used for continuously supplying the empty trays, the other tray is used for descending layer by layer to stack the full-loaded trays, and the full-loaded trays are transferred by a transfer cart after being fully loaded, so that the mechanical and automatic levels of a toothbrush production line are improved.

Claims

1. A tray lifting mechanism comprises a rack, wherein the rack is provided with a lower layer frame and an upper layer frame, a plurality of stand columns are connected between the upper layer frame and the lower layer frame, a lifting mechanism is arranged in the rack and used for lifting a tray, and an inlet and an outlet for facilitating the inlet and the outlet of a trolley for conveying the tray are laterally arranged on the rack between the lower layer frame and the upper layer frame; the lifting mechanism comprises lifting seats which are arranged on two sides of the tray parallel to the inlet and outlet directions and can lift synchronously, the opposite inner sides of the lifting seats are respectively connected with a supporting bottom frame for supporting the tray on the lowest layer, the outer sides of the lifting seats are respectively fixed with a slider guide rail mechanism, each group of slider guide rail mechanisms are respectively driven by a chain mechanism, and the two groups of chain mechanisms are driven by a synchronous chain wheel mechanism to lift synchronously; the rack on the top side and the bottom side of the lifting mechanism is respectively provided with a position sensor for detecting the upper limit position and the lower limit position of the tray; the supporting mechanism is arranged on two sides of the tray corresponding to the upper layer frame in a matched mode and comprises a supporting plate assembly which is synchronously opened and closed from the outer side of the tray to the side edge of the tray, the side edge of the supporting plate assembly is clamped with the side edge of the tray in a matched mode, a clamping cylinder is fixed on the upper layer frame on the outer side of the supporting plate assembly, and the end portion of a telescopic rod of the clamping cylinder is fixedly connected with the supporting plate assembly; the supporting plate assembly comprises a horizontally arranged moving plate, one end of the moving plate is connected with the clamping cylinder, a sliding block guide rail mechanism is arranged on the lower side of the moving plate, a vertical plate is vertically arranged at the other end of the moving plate, and a supporting plate for supporting and fixing the bottom side edge of the tray is fixed on one side of the vertical plate corresponding to the tray; the tray is characterized in that a limiting baffle used for abutting against the outer side wall of the top tray is arranged on the upper side of the inlet and the outlet of the rack; the utility model discloses a spacing baffle, including layer board, swing piece, tray, telescopic link, swing piece, support shaft, little cylinder, the layer board upside is connected with the swing piece, the middle part of the vertical direction of swing piece passes through the back shaft swing with the layer board and is connected, be connected with little cylinder on the layer board, the upper end of swing piece rotates with the telescopic link of little cylinder to be connected, the lower extreme of swing piece pushes away with tray cooperation top and is used for promoting the tray to the spacing baffle direction, the tray is equipped with the step breach that the side was opened with swing piece complex position, the step breach is close to the side of spacing baffle and supports with the cooperation of swing piece and lean on, the swing piece is supported under the promotion of.

2. The tray lifting mechanism according to claim 1, wherein the chain mechanism comprises a vertically arranged chain box, a first chain wheel is arranged at the bottom side of the chain box, a second chain wheel is arranged at the top side of the chain box, a lifting chain is connected between the first chain wheel and the second chain wheel, a vertical slot is arranged on the side wall of the chain box corresponding to one side of the slide block guide rail in a matching manner, vertical guide rails are respectively arranged at two sides of the slot, the two vertical guide rails are respectively connected with the slide block in a matching manner, a synchronous connecting block is connected between the two slide blocks, and the synchronous connecting block extends into the slot and is fixedly connected with the lifting chain to realize synchronous lifting; the synchronous chain wheel mechanism comprises a driving motor fixed on the middle section of the bottom layer frame, two driving chain wheels with the same size are connected to an output shaft of the driving motor, each driving chain wheel is connected with a driven chain wheel through a synchronous chain in a transmission mode, wheel shafts of the two driven chain wheels are coaxially connected with first chain wheels on the lower sides of the two chain boxes respectively, and the driven chain wheels are connected with the bottom layer frame through bearing seats in a supporting mode.

3. A pallet lifting mechanism according to claim 1, wherein two vertical stops are provided between the upper and lower frames between the two supporting base frames for limiting the depth of entry of the pallet into the stack in the lifting mechanism, said vertical stops being adapted to limit abutment against the outer edge of the pallet on the side remote from the access opening.

4. The tray lifting mechanism according to claim 3, wherein the vertical baffle is a right angle steel disposed at two corners of the outer edge corresponding to the tray, and the upper end and the lower end of the vertical baffle are fixed to the upper frame and the lower frame, respectively.

5. The tray lifting mechanism according to claim 1, wherein the lower frame is provided with a bottom layer plate corresponding to the lowest position of the lifting seat, and the bottom layer plate is connected with the bottom side of the support frame lowered to the lowest position in a supporting manner.