A material collecting and feeding device and a reciprocating material feeding method

Abstract

The application discloses a collecting and feeding lifting device, which comprises a lifting support, the lifting support comprises a bottom conveying layer and an upper conveying layer, a lifting mechanism for driving workpieces to lift is slidably connected to the lifting support, and a telescopic conveying unit is arranged on the upper conveying layer. The application provides a collecting and feeding lifting device, so that the lifting mechanism can independently lift between conveying layers corresponding to different production lines, only workpieces are driven during lifting, the load of the lifting mechanism is reduced, meanwhile, the action of the conveying layer and the lifting mechanism is independent, synchronous work can be carried out, the lifting mechanism is prevented from stopping and waiting, and the working efficiency of the production line is improved.

Description

Technical Field

[0001] The present invention relates to the field of automated production lines, and in particular to a material receiving and feeding lifting device and a reciprocating material receiving and feeding method. Background Art

[0002] In the field of production line processing, in order to improve production efficiency, modular operations are currently adopted. The processed products are placed on pallets and transported within the production line. Pallets are circulating components and are generally recycled within the production line. In order to maximize space utilization, production lines usually adopt a stacking method of multiple production lines. Therefore, an elevator is set at the end of the production line to redistribute the circulating pallets to different production lines. A pallet truck for conveying pallets is also set in the elevator. Existing elevators generally drive the pallet truck and pallet to rise and fall synchronously.

[0003] For example, publication number "CN108602577B" discloses a "vertical assembly production line" including a first pallet elevator, a second pallet elevator, an upper track and a lower track. The upper track can be connected between the first elevator and the second elevator, and can be configured to transport pallets between the first pallet elevator and the second pallet elevator. The lower track is disposed below the upper track, and can be configured to transport pallets between the second pallet elevator and the first pallet elevator. The lower track drive system can be connected between the first pallet elevator and the second pallet elevator, and can be configured to engage a first group of pallets among a plurality of pallets. However, in actual applications, the lifting mechanisms at both ends of the production line need to drive the pallet trucks for synchronous lifting and lowering. Only after the workpiece in the pallet truck is transported to the production line can the lifting mechanism be started again for resetting, which increases the time interval between the two lifting actions and reduces production efficiency. In addition, the lifting mechanism carries a large amount of weight each time, which increases energy consumption. Summary of the Invention

[0004] In response to the problems in the prior art mentioned in the background technology that the time interval between lifting actions is long and the movement load of the lifting mechanism is large, the present invention provides a material receiving and feeding lifting device, which enables the lifting mechanism to independently lift and lower between the conveying layers corresponding to different production lines. During the lifting process, it only drives the workpiece, reducing the load on the lifting mechanism. At the same time, the conveying layer and the lifting mechanism move independently and can work synchronously, avoiding stagnation and waiting of the lifting mechanism, thereby improving the working efficiency of the production line.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions.

[0006] A material receiving and feeding lifting device includes a lifting bracket, the lifting bracket includes a bottom conveying layer and an upper conveying layer, the lifting bracket is slidably connected to a lifting mechanism for driving the workpiece to lift, and the upper conveying layer is provided with a telescopic conveying unit. A conveying layer is provided in the lifting device, and the conveying layer includes a bottom conveying layer and an upper conveying layer, wherein the upper conveying layer can be provided with multiple conveying layers, for adapting to production lines with different numbers of layers, wherein the bottom conveying layer and the upper conveying layer are both fixed in the lifting direction, and the workpiece is driven to be transported by the lifting mechanism, and the lifting mechanism fixes the workpiece in ways including but not limited to supporting fixation, clamping fixation, and engaging fixation, driving the workpiece to move up and down; wherein a conveying unit is provided between the bottom conveying layer and the upper conveying layer, and when the workpiece is driven to the conveying layer by the lifting mechanism, the conveying unit drives the workpiece to be transferred to the production line, and a telescopic conveying unit is provided on the upper conveying layer, which can be carried out during the movement of the workpiece Telescopic avoidance: when the workpiece moves to the upper conveying layer, the telescopic conveying unit telescopes inward, thereby abutting and supporting the workpiece and transferring the workpiece out. At this time, the lifting mechanism can be separated from the workpiece and go to another conveying layer to clamp a new workpiece. The lifting mechanism can adapt to the layout of the production line and can descend from the upper conveying layer to the bottom conveying layer, and at the same time, it can rise from the bottom conveying layer to the upper conveying layer. Through this conveying method, the actions between the lifting mechanism and the conveying layer can be completely separated, and the various mechanisms can work synchronously. Therefore, the rhythm of the entire production line is accelerated, and the production efficiency is significantly improved. The lifting mechanism has only two states: empty and loaded with workpieces. The load is reduced, energy loss is reduced, and production costs are saved.

[0007] Preferably, a lifting plate is provided in the lifting mechanism, and an avoidance telescopic source is provided on the lifting plate, and the avoidance telescopic source is connected to a support plate, and the support plate abuts the workpiece. The lifting mechanism is provided with an avoidance telescopic source, wherein the avoidance telescopic source can realize the clamping action or avoidance action of the lifting mechanism. When the lifting mechanism is in a supporting and fixed state, the support plate abuts against the lower bottom surface of the workpiece. When the lifting mechanism rises from a lower conveying layer to a higher conveying layer, the avoidance telescopic source needs to drive the support plate to expand outward, thereby avoiding interference with the workpiece during the ascent. When the lifting mechanism is in a clamping and fixed state or a clamping and fixed state, the avoidance telescopic source drives the clamping part or the clamping wall to expand and contract, thereby disengaging from the workpiece and also avoiding interference. Preferably, the support and fixed state is used to ensure that the lifting mechanism firmly supports the workpiece, and at the same time can reduce the action coordination when the workpiece is transferred between the lifting mechanism and the conveying layer, thereby improving the fault tolerance of the production line and reducing the precision requirements.

[0008] Preferably, the lifting mechanism includes a plurality of lifting legs, with avoidance gaps between adjacent lifting legs, and in the lifting direction, the avoidance gaps are aligned with the telescopic conveying unit. The lifting legs set in the lifting mechanism can abut and support the workpiece, thereby supporting the lifting of the workpiece, wherein avoidance gaps are set between the lifting legs, and the setting position of the avoidance gaps is aligned with the telescopic conveying unit, so that after the workpiece is transferred to the upper conveying layer, the telescopic conveying unit is extended, and the lifting mechanism can directly descend, avoiding interference with the telescopic conveying unit through the avoidance gaps. After the lifting mechanism descends, the workpiece naturally abuts against the telescopic conveying unit and is supported and fixed by the telescopic conveying unit, thereby ensuring the continuity between the overall actions, and the support conversion action of the workpiece is smoothly connected. When the lifting legs move downward to prepare to lift and support the workpiece on the bottom conveying layer, they also need to expand to both sides. This expansion action can be carried out simultaneously during the lifting movement between the upper conveying layer and the bottom conveying layer, and the two actions are overlapped and crossed, thereby shortening the overall process.

[0009] Preferably, the lifting legs include folding plate supports, and a telescopic gap is provided between adjacent folding plate supports, so that the telescopic conveying unit can pass through the telescopic gap, and the telescopic gap is connected to the avoidance gap. The lifting mechanism also includes a lifting plate, and each lifting leg is provided on the lifting plate. The lifting legs include folding plate supports. The folding plate supports can be used to lift the workpiece to the upper conveying layer by only lifting the lifting legs above the telescopic conveying unit. The lifting plate can be located below the telescopic conveying unit to prevent the lifting plate from interfering with the driving mechanism and telescopic mechanism of the telescopic conveying unit. The telescopic gap provided between the folding plate supports can be passed through by the telescopic conveying unit, and the telescopic gap is connected to the avoidance gap. After the telescopic conveying unit is extended, the lifting mechanism can be directly lowered to realize the workpiece transfer, thereby improving production efficiency and reducing the interference of the lifting mechanism, making the setting of the telescopic conveying unit more diversified.

[0010] Preferably, the bottom conveying layer is provided with a settling trough, which is arranged corresponding to the lifting legs. The settling trough is provided in the bottom conveying layer. When the lifting mechanism drives the workpiece down to the bottom conveying layer, due to the presence of the settling trough, the lifting legs and the supporting folding plate can all be lowered into the settling trough, thereby transferring the workpiece to the bottom conveying layer. The lifting mechanism then completes expansion within the bottom conveying layer and moves upward to handle the remaining workpieces, thereby improving the smoothness of workpiece transfer and enhancing production efficiency.

[0011] Preferably, the upper conveying layer includes a receiving layer, and the receiving layer and the bottom conveying layer are both connected to a conveying line. The upper conveying layer also includes a transition layer, and the transition layer is arranged between the receiving layer and the bottom conveying layer. The total number of the upper conveying layers and the bottom conveying layers is n, and the lifting mechanism includes a lifting plate group, and the number of the lifting plate groups is n-1. A transition layer is also provided on the upper conveying layer. Synchronously, the number of lifting plate groups increases accordingly with the addition of transition layers. The total number of transition layers, receiving layers, and bottom conveying layers is n. The difference between the lifting plate groups and n is kept at one, thereby reducing the operating mileage of the overall lifting mechanism, thereby speeding up the production rhythm. At the same time, the receiving and feeding material lifting device can be applied to different numbers of conveyor lines, expanding the scope of application. The conveyor line is connected to the production line and plays a transition conveying role. There are multiple conveyor lines, which are respectively connected to the bottom conveying layer and the upper conveying layer. When there is a transition layer and a receiving layer on the upper conveying layer, the conveyor line is connected to the receiving layer. The material can enter the receiving layer / bottom conveying layer from the conveyor line, and then be driven to the transition layer by the lifting mechanism for temporary storage, and then transferred from the transition layer to the bottom conveying layer / receiving layer, and finally transferred out from the conveyor line. The telescopic conveying unit of the transition layer only supports the workpiece, is not connected to the conveyor line, and therefore does not perform lateral conveying. Each lifting plate group is independently connected to the avoidance telescopic source and can perform independent avoidance actions, thereby increasing the overall flexibility.

[0012] Preferably, the lifting bracket is movably connected to a floating plate, which is connected to a telescopic conveying source, and the telescopic conveying unit is disposed on the floating plate. The lifting bracket is provided with a floating plate, and the telescopic conveying unit is disposed on the floating plate, capable of extending and retracting in response to the telescopic movement of the floating plate. The floating plate is driven by the telescopic conveying source, which includes but is not limited to a pneumatic cylinder or an oil cylinder, thereby ensuring the synchronization of the movement of all telescopic conveying units.

[0013] Preferably, the telescopic conveying unit is provided with driven teeth, each of which is connected to a drive chain. The floating plate is connected to a drive source, which is connected to the drive chain. Since the telescopic conveying units need to be spaced apart from the lifting legs and the folding plate support, multiple telescopic conveying units are arranged at intervals. The meshing connection between the driven teeth and the drive chain transmits the rotation of the drive source to each telescopic conveying unit, thereby transferring the workpiece to the conveyor line. The drive chain ensures a consistent conveying rate for each telescopic conveying unit. The driven teeth are preferably double-row sprockets, each of which is connected by a segmented drive chain, thereby ensuring transmission stability.

[0014] Preferably, a reciprocating feeding and receiving method using any one of the feeding and receiving lifting devices described in 1-8 above comprises the following steps:

[0015] S1. The workpiece enters the receiving and feeding lifting device from the bottom conveying layer / upper conveying layer through the conveyor line;

[0016] S2, the lifting mechanism drives the workpiece to rise to the upper conveying layer or descend to the bottom conveying layer;

[0017] S3. When the workpiece contacts the upper conveying layer / bottom conveying layer under the drive of the lifting mechanism, the lifting mechanism separates from the workpiece and expands to both sides, and the upper conveying layer / bottom conveying layer drives the workpiece into the conveying line;

[0018] S4, after the lifting mechanism is deployed to both sides in step S3, the lifting mechanism descends / ascends to the initial position in step S1;

[0019] S5. The expanded lifting mechanism contracts inward to contact the new workpiece, driving the new workpiece to move up / down.

[0020] Through the avoidance and telescopic movement of the telescopic conveying unit and the lifting mechanism, it is ensured that the workpieces between the various conveying layers can be conveyed synchronously, and the lifting mechanism can also perform lifting operations during the conveying process of the conveying layer, overlapping the actions between the various components, thereby improving the transfer efficiency of the workpieces between the various conveying lines, and the various components are prevented from interfering with each other through telescopic avoidance. In steps S3 and S4, when using support fixation, if the lifting mechanism is separated from the workpiece and then descends, it can directly descend through the avoidance gap and then unfold. If it moves upward, it needs to unfold outwards before ascending.

[0021] Preferably, the lifting mechanism includes a plurality of folding plate supports, with telescopic gaps provided between the folding plate supports. In step S2, after the lifting mechanism drives the workpiece up to the upper conveying layer, the telescopic conveying unit extends inward through the telescopic gaps, and the lifting mechanism descends, driving the workpiece to abut against the telescopic conveying unit, while the lifting mechanism simultaneously detaches from the workpiece. The workpiece is lifted by the folding plate supports and passed through the telescopic gaps. After the folding plate supports descend, the workpiece is seamlessly transferred to the telescopic conveying unit, thereby reducing the number of transfer steps between the telescopic conveying unit and the lifting mechanism, improving the workpiece transfer process and accelerating the production cycle.

[0022] The beneficial effects of the present invention are as follows:

[0023] (1) Through the telescopic conveying unit of the upper conveying layer, the workpiece can be avoided during the lifting process of the lifting mechanism, and the workpiece can be supported after the lifting is completed, thereby realizing the independent operation of the conveying layer and the lifting device, thereby improving the production cycle;

[0024] (2) The lifting mechanism ensures the stability of the workpiece support by means of support fixation, and sets lifting legs and folding plate supports. The lifting mechanism is driven by the avoidance telescopic source to perform avoidance actions during the movement, ensuring the continuity and smoothness of the workpiece transfer and avoiding interference;

[0025] (3) By setting up a transition layer to temporarily store the workpiece, the single lifting time of the lifting mechanism can be reduced, thereby improving the production cycle;

[0026] (4) The lifting plate is supported by the folding plate to move under the floating plate, so that the telescopic drive unit can complete the synchronous rotation of a single drive source through the drive chain, reducing cost and increasing synchronization. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is the first axonometric drawing of the present invention.

[0028] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0029] Figure 3 It is a half-section view of the present invention.

[0030] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle.

[0031] Figure 5 It is the second axonometric drawing of the present invention.

[0032] Figure 6 yes Figure 5 Schematic diagram of the structure of the middle lifting plate group.

[0033] Figure 7 It is a structural diagram of Example 3.

[0034] Figure 8 This is a flowchart of Example 4.

[0035] In the figure: 1 lifting bracket, 2 bottom conveying layer, 21 sedimentation trough, 3 upper conveying layer, 31 telescopic conveying unit, 311 driven gear, 32 receiving layer, 33 transition layer, 34 floating plate, 35 conveying telescopic source, 36 driving source, 4 lifting mechanism, 401 lifting plate group, 41 lifting plate, 42 avoidance telescopic source, 43 support plate, 44 lifting support foot, 441 avoidance gap, 45 folding plate support, 451 telescopic gap, 46 lifting source, 47 lifting chain. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] Example 1:

[0038] like Figure 1 、 3 As shown in Figures 4, 5 and 6, a material receiving and feeding lifting device includes a lifting bracket 1, the lifting bracket 1 includes a bottom conveying layer 2 and an upper conveying layer 3, the lifting bracket 1 is slidably connected with a lifting mechanism 4 for driving the workpiece to lift and lower, the upper conveying layer 3 is provided with a telescopic conveying unit 31, the lifting mechanism 4 is provided with a lifting plate 41, the lifting plate 41 is provided with an avoidance telescopic source 42, the avoidance telescopic source 42 is connected to a support plate 43, and the support plate 43 abuts the workpiece.

[0039] A conveying layer is provided in the lifting device, and the conveying layer includes a bottom conveying layer 2 and an upper conveying layer 3, wherein the upper conveying layer 3 can be provided with multiple conveying layers for adapting to production lines with different numbers of layers, wherein the bottom conveying layer 2 and the upper conveying layer 3 are both fixed in the lifting direction, and the workpiece is driven for conveying by the lifting mechanism 4, and the lifting mechanism 4 fixes the workpiece in a supporting manner; wherein, a conveying unit is provided between the bottom conveying layer 2 and the upper conveying layer 3, and when the workpiece is driven to the conveying layer by the lifting mechanism 4, the conveying unit drives the workpiece to be transferred to the production line, and a telescopic conveying unit 31 is provided on the upper conveying layer 3, which can be telescopically avoided during the movement of the workpiece, and when the workpiece moves to the upper conveying layer 3, the telescopic conveying unit 31 is telescoped inwardly, thereby abutting and supporting the workpiece, and transferring the workpiece out, and at this time the lifting mechanism 4 can be separated from the workpiece. , go to other conveying layers to clamp new workpieces, wherein the lifting mechanism 4 can adapt to the layout of the production line, and can descend from the upper conveying layer 3 to the bottom conveying layer 2, and at the same time can rise from the bottom conveying layer 2 to the upper conveying layer 3; through this conveying method, the actions between the lifting mechanism 4 and the conveying layer can be completely separated, and each mechanism can work synchronously, so the rhythm of the entire production line is accelerated, the production efficiency is significantly improved, and the lifting mechanism 4 has only two states: no-load and loaded workpieces, the load is reduced, the energy loss is reduced, and the production cost is saved; an avoidance telescopic source 42 is provided on the lifting mechanism 4, wherein the avoidance telescopic source 42 can realize the avoidance action of the lifting mechanism 4, wherein the support fixation can ensure that the lifting mechanism 4 firmly supports the workpiece, and at the same time can reduce the action coordination when the workpiece is transferred between the lifting mechanism 4 and the conveying layer, improve the fault tolerance of the production line, and reduce the precision requirements.

[0040] like Figure 6As shown, the lifting mechanism 4 includes lifting legs 44 arranged at intervals, and an avoidance gap 441 is left between adjacent lifting legs 44. In the lifting direction, the avoidance gap 441 is aligned with the telescopic conveying unit 31. The lifting legs 44 include folding plate supports 45, and a telescopic gap 451 is set between adjacent folding plate supports 45. The telescopic conveying unit 31 can pass through the telescopic gap 451, and the telescopic gap 451 is connected to the avoidance gap 441.

[0041] The lifting legs 44 provided in the lifting mechanism 4 can abut and support the workpiece, thereby supporting the lifting of the workpiece, wherein an avoidance gap 441 is provided between the lifting legs 44, and the setting position of the avoidance gap 441 is aligned with the telescopic conveying unit 31, so that after the workpiece is transferred to the upper conveying layer 3, the telescopic conveying unit 31 is extended, and the lifting mechanism 4 can directly descend, avoiding interference with the telescopic conveying unit 31 through the avoidance gap 441. After the lifting mechanism 4 descends, the workpiece naturally abuts against the telescopic conveying unit 31 and is supported and fixed by the telescopic conveying unit 31, ensuring the continuity between the overall movements, and the support conversion movement of the workpiece is smoothly connected. When the lifting legs 44 move downward to prepare for lifting and supporting the workpiece on the bottom conveying layer 2, they also need to expand to both sides. This expansion action can be carried out synchronously during the lifting movement between the upper conveying layer 3 and the bottom conveying layer 2, The actions overlap and cross, thereby shortening the overall process; the lifting mechanism 4 also includes a lifting plate 41, and each lifting foot 44 is arranged on the lifting plate 41. The lifting foot 44 includes a folding plate support 45. The folding plate support 45 can make it possible to lift the workpiece to the upper conveying layer 3 by only lifting the lifting foot 44 above the telescopic conveying unit 31. The lifting plate 41 can be located below the telescopic conveying unit 31 to prevent the lifting plate 41 from interfering with the driving mechanism and the telescopic mechanism of the telescopic conveying unit 31, and the telescopic gap 451 set between the folding plate supports 45 can be used for the telescopic conveying unit 31 to pass through, and the telescopic gap 451 is connected with the avoidance gap 441. After the telescopic conveying unit 31 is extended, the lifting mechanism 4 can directly descend to realize the workpiece transfer, thereby improving production efficiency, and reducing the interference of the lifting mechanism 4, making the setting of the telescopic conveying unit 31 more diversified.

[0042] like Figure 4 As shown, the bottom conveying layer is provided with a sedimentation trough 21, and the sedimentation trough 21 is provided corresponding to the lifting legs 44. The sedimentation trough 21 is provided in the bottom conveying layer. When the lifting mechanism 4 drives the workpiece to descend to the bottom conveying layer 2, due to the presence of the sedimentation trough 21, the lifting legs 44 and the supporting folding plate can all be lowered into the sedimentation trough 21, thereby transferring the workpiece to the bottom conveying layer 2. Subsequently, the lifting mechanism 4 completes its expansion in the bottom conveying layer 2 and moves upward to process the remaining workpieces, thereby improving the smoothness of workpiece transfer and enhancing production efficiency.

[0043] like Figure 2 As shown, the lifting bracket 1 is movably connected to a floating plate 34, which is connected to a telescopic conveying source 35. The telescopic conveying units 31 are mounted on the floating plate 34. The lifting bracket 1 is provided with the floating plate 34, and the telescopic conveying units 31 are mounted on the floating plate 34. The floating plate 34 is driven by the telescopic conveying source to move in a telescopic manner, thereby ensuring the synchronization of the movements of all telescopic conveying units 31.

[0044] like Figure 2 As shown, the telescopic conveying unit 31 is provided with a driven tooth 311, each of which is connected to a drive chain. The floating plate 34 is connected to a drive source 36, which is connected to the drive chain. Because the telescopic conveying units 31 need to be spaced apart from the lifting legs 44 and the folding plate support 45, multiple telescopic conveying units 31 are arranged in a spaced-apart arrangement. The meshing connection between the driven teeth 311 and the drive chain transmits the rotation of the drive source 36 to each telescopic conveying unit 31, thereby transferring the workpiece to the conveyor line. The drive chain ensures that the conveying rate of each telescopic conveying unit 31 is consistent. The driven teeth 311 are preferably double-row sprockets, each of which is connected by a segmented drive chain, thereby ensuring transmission stability.

[0045] The assembly and working process of the material receiving and feeding lifting device in this embodiment are as follows: in this embodiment, the bottom conveying layer 2 receives the workpiece from the conveying line. At this time, the support plate 43 in the lifting mechanism 4 is located in the sedimentation tank 21. When the workpiece is completely placed on the bottom conveying layer 2, the lifting source 46 in the lifting mechanism 4 drives the lifting plate group 401 to move through the lifting chain 47, and then the support plate 43 abuts against the workpiece, driving the workpiece to move upward. At this time, the telescopic conveying unit 31 in the upper conveying layer 3 above is in a retracted state. When the support plate 43 drives the workpiece to the top of the telescopic conveying unit 31, the floating plate 34 drives the telescopic conveying unit 31 to extend and pass through the telescopic gap 451 under the drive of the conveying telescopic source 35. At this time, the lifting plate 41 is in a position below the telescopic conveying unit 31. Since the lifting support legs 44 and the telescopic conveying The units 31 are arranged at staggered intervals. When the lifting plate group 401 descends, the workpiece is supported by the telescopic conveying unit 31, and the workpiece is left in the upper conveying layer 3. Driven by the driving source 36, the telescopic conveying unit 31 rotates to transfer the workpiece out of the conveying line. At the same time, the telescopic support feet move downward through the avoidance gap 441 to directly disengage from the upper conveying layer 3, and in the process of downward movement, the lifting plate 41 expands to both sides by avoiding the telescopic source 42 to avoid the workpiece that has been conveyed to the bottom conveying layer 2. When the support plate 43 reaches the sedimentation trough 21, the telescopic source 42 shrinks inward, and the support plate 43 moves to the bottom of the workpiece, and then rises to drive the workpiece to be conveyed to the upper conveying layer 3 again. Through this action coordination, the actions of the various components do not interfere with each other, and work synchronously, thereby improving production efficiency and a faster pace.

[0046] Example 2:

[0047] The difference from Example 1 is that the action process of the lifting mechanism 4 in this embodiment is opposite. The workpiece is transferred from the conveyor line to the upper conveying layer 3. At this time, the support plate 43 in the lifting mechanism 4 is located in the upper conveying layer 3. After the workpiece is completely transferred in by the telescopic conveying unit 31, the support plate 43 abuts the workpiece, and then the telescopic conveying unit 31 moves to both sides to separate from the workpiece, and the lifting mechanism 4 moves downward. The workpiece moves synchronously with the lifting mechanism 4 under the action of gravity. When the workpiece leaves the upper conveying layer 3, the telescopic conveying unit 31 extends toward the center and begins to receive new workpieces from the conveyor line. After the support plate 43 drives the workpiece to the bottom conveying layer 2, the support plate 43 sinks into the sedimentation tank 21, and the workpiece is abutted and supported by the conveyor belt on the bottom conveying layer 2, and the workpiece is transferred to the corresponding conveying line, and the lifting mechanism 4 begins to expand synchronously to both sides, rises and separates from the bottom conveying layer 2, and then contracts inward, and then directly abuts the bottom of the workpiece on the upper conveying layer 3 through the support plate 43, repeats the above action, and transfers the new workpiece to the bottom conveying layer 2.

[0048] Example 3:

[0049] like Figure 7 As shown, different from Example 1, the upper conveying layer 3 in this embodiment includes a receiving layer 32, and the receiving layer 32 is connected to the conveying line. The upper conveying layer 3 also includes a transition layer 33, and the transition layer 33 is arranged between the receiving layer 32 and the bottom conveying layer 2. The total number of the upper conveying layers 3 and the bottom conveying layers 2 is n, and the lifting mechanism 4 includes a lifting plate group 401, and the number of the lifting plate groups 401 is n-1. A transition layer 33 is also provided on the upper conveying layer 3. Synchronously, the number of lifting plate groups 401 increases accordingly with the addition of transition layers 33, and the difference between the two is kept at one, thereby reducing the operating mileage of the overall lifting mechanism 4, thereby speeding up the production rhythm, and at the same time making the receiving and feeding lifting device applicable to different numbers of conveyor lines, expanding the scope of application, wherein the conveyor line is connected to the production line and plays a transition conveying role, and the conveyor line is connected to the bottom conveying layer 2 and the receiving layer 32, wherein the material can enter the receiving layer 32 / bottom conveying layer 2 from the conveying line, and then be driven to the transition layer 33 by the lifting mechanism 4 for temporary storage, and then be transferred from the transition layer 33 to the bottom conveying layer 2 / receiving layer 32, and finally be transferred out from the conveying line, wherein the telescopic conveying unit 31 of the transition layer 33 only supports the workpiece, is not connected to the conveying line, and therefore does not perform horizontal conveying, and each lifting plate group 401 is separately connected to the avoidance telescopic source 42, and can perform independent avoidance actions, thereby increasing the overall flexibility.

[0050] Example 4:

[0051] like Figure 8 As shown, this embodiment discloses a reciprocating material feeding method, comprising the following steps:

[0052] S1, the workpiece enters the material receiving and feeding lifting device through the conveyor line from the bottom conveyor layer 2 / upper conveyor layer 3;

[0053] S2, the lifting mechanism 4 drives the workpiece to rise to the upper conveying layer 3 or descend to the bottom conveying layer 2;

[0054] S3. When the workpiece contacts the upper conveying layer 3 / bottom conveying layer 2 under the drive of the lifting mechanism 4, the lifting mechanism 4 separates from the workpiece and expands to both sides, and the upper conveying layer 3 / bottom conveying layer 2 drives the workpiece into the conveying line;

[0055] S4, after the lifting mechanism 4 is deployed to both sides in step S3, the lifting mechanism 4 descends / ascends to the initial position in step S1;

[0056] S5, the expanded lifting mechanism 4 contracts inward to abut against the new workpiece, driving the new workpiece to move up / down;

[0057] In step S2 , after the lifting mechanism 4 drives the workpiece to rise to the upper conveying layer 3 , the telescopic conveying unit 31 extends through the telescopic gap 451 , and the lifting mechanism 4 descends, driving the workpiece to abut against the telescopic conveying unit 31 , while the lifting mechanism 4 detaches from the workpiece.

[0058] Through the avoidance and telescopic movement of the telescopic conveying unit 31 and the lifting mechanism 4, it is ensured that the workpieces between the various conveying layers can be conveyed synchronously, and the lifting mechanism 4 can also perform lifting operations during the conveying process of the conveying layer, overlapping the actions of each component, thereby improving the transfer efficiency of the workpiece between each conveying line, and the various components are prevented from interfering with each other through telescopic avoidance. In steps S3 and S4, when using support fixation, if the lifting mechanism 4 is separated from the workpiece and then moves downward, it can directly descend through the avoidance gap 441 and then unfold, and if it moves upward, it needs to unfold outward first and then rise; the workpiece is driven to rise by the folding plate support 45, and through the telescopic gap 451, after the folding plate support 45 descends, the workpiece is seamlessly transferred to the telescopic conveying unit 31, thereby reducing the transfer steps between the telescopic conveying unit 31 and the lifting mechanism 4, improving the transfer process of the workpiece, and speeding up the production rhythm.

[0059] In addition to the above-mentioned embodiments, within the scope disclosed in the claims and description of the present invention, the technical features of the present invention can be reselected and combined to form new embodiments. These can be achieved by those skilled in the art without creative work. Therefore, these embodiments that are not described in detail in the present invention should also be regarded as specific embodiments of the present invention and within the scope of protection of the present invention.

Claims

1. A material receiving and feeding lifting device, comprising a lifting bracket, characterized in that: The lifting bracket includes a bottom conveying layer and an upper conveying layer. The lifting bracket is slidably connected with a lifting mechanism that drives the workpiece to lift and lower. The upper conveying layer is provided with a telescopic conveying unit. A lifting plate is provided in the lifting mechanism, and an avoidance and telescopic source is provided on the lifting plate. The lifting mechanism includes a plurality of lifting legs, and an avoidance gap is left between adjacent lifting legs. The lifting legs include folding plate supports, and a telescopic gap is provided between adjacent folding plate supports. The telescopic conveying unit can pass through the telescopic gap, and the telescopic gap is connected with the avoidance gap. A floating plate is movably connected to the lifting bracket, and the floating plate is connected to the conveying and telescopic source.

2. A material receiving and feeding lifting device according to claim 1, characterized in that: The avoidance and telescopic source is connected to a support plate, and the support plate abuts against the workpiece.

3. A material receiving and feeding lifting device according to claim 1, characterized in that: In the lifting direction, the avoidance gap is aligned with the telescopic conveying unit.

4. A material receiving and feeding lifting device according to claim 1, characterized in that: The bottom conveying layer is provided with a sedimentation trough, and the sedimentation trough is arranged corresponding to the lifting support legs.

5. A material receiving and feeding lifting device according to claim 1, 2, 3 or 4, characterized in that: The upper conveying layer includes a receiving layer, and the receiving layer and the bottom conveying layer are both connected to a conveying line. The upper conveying layer also includes a transition layer, and the transition layer is arranged between the receiving layer and the bottom conveying layer. The total number of the upper conveying layers and the bottom conveying layers is n, and the lifting mechanism includes a lifting plate group, and the number of the lifting plate groups is n-1.

6. A material receiving and feeding lifting device according to claim 1, 2, 3 or 4, characterized in that: The telescopic conveying unit is arranged on the floating plate.

7. A material receiving and feeding lifting device according to claim 6, characterized in that: The telescopic conveying unit is provided with driven teeth, each of the driven teeth is connected to a driving chain, the floating plate is connected to a driving source, and the driving source is connected to the driving chain.

8. A reciprocating material receiving and feeding method using any one of the material receiving and feeding lifting devices according to claims 1 to 7, characterized in that: The following steps are involved: S1. The workpiece enters the receiving and feeding lifting device from the bottom conveying layer / upper conveying layer through the conveyor line; S2, the lifting mechanism drives the workpiece to rise to the upper conveying layer or descend to the bottom conveying layer; S3. When the workpiece contacts the upper conveying layer / bottom conveying layer under the drive of the lifting mechanism, the lifting mechanism separates from the workpiece and expands to both sides, and the upper conveying layer / bottom conveying layer drives the workpiece into the conveying line; S4, after the lifting mechanism is deployed to both sides in step S3, the lifting mechanism descends / ascends to the initial position in step S1; S5. The expanded lifting mechanism contracts inward to contact the new workpiece, driving the new workpiece to move up / down.

9. A reciprocating material receiving and feeding method according to claim 8, characterized in that: The lifting mechanism includes several folding plate supports, and a telescopic gap is set between the folding plate supports. In step S2, when the lifting mechanism drives the workpiece to rise to the upper conveying layer, the telescopic conveying unit extends inward through the telescopic gap, and the lifting mechanism descends, driving the workpiece to abut against the telescopic conveying unit, and at the same time the lifting mechanism separates from the workpiece.

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