A roller line lifting and transferring device

Abstract

The present invention discloses a roller line lifting and transfer device, which is part of the automated production line for electric energy meters. It can effectively cooperate with an external double-layer roller conveyor line to realize the functions of receiving incoming materials, adjusting positions, temporarily stopping for positioning, adjusting transfer height, and conveying materials for turnover boxes. The overall process is smooth and reasonable, and has strong adaptability. The main structure of this application includes a main profile frame, an adjusting roller line, a lifting drive mechanism, a long pressure bar, and a positioning cylinder. The adjusting roller line includes a roller line bracket, a plurality of rotating rollers, and a roller motor. The roller line bracket is slidably connected to the main profile. In any two adjacent rotating rollers, the two rotating rollers are driven by a pulley mechanism. The pulley mechanism includes a transmission belt, a pulley provided on one rotating roller, and a pulley provided on the other rotating roller. The lifting drive mechanism includes a cylinder mounting plate, a lifting cylinder, a sprocket, and a chain that cooperates with the sprocket.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric energy meter production and detection and automated assembly lines, and in particular relates to a roller line lifting and transferring device. Background Art

[0002] During the production and testing of electricity meters, turnover boxes are often used to store the meters for transport. Considering factors such as floor space and production and testing efficiency, double-layer roller conveyor lines are often used to transport turnover boxes (typically boxes with an open top for storing multiple electricity meters). A double-layer roller conveyor line is equivalent to two ordinary roller conveyor lines arranged one above the other. The upper roller conveyor line can be referred to as the upper roller line, and the lower roller conveyor line can be referred to as the lower roller line. The upper and lower roller lines can be arranged so that one serves as the incoming material line and the other as the outgoing material line. Combined with manual labor or other transfer equipment, this assists in the incoming and outgoing material flow of the turnover boxes. Between the incoming and outgoing material processes, the turnover boxes need to be temporarily stopped, either manually or with the help of equipment. During this stop, for empty boxes (empty turnover boxes), the robot can load the energy meters into the turnover box one by one. For full boxes (full turnover boxes), the robot can grab the energy meters from the turnover box one by one. For example, an empty box is conveyed from the upper roller line to the transfer point. There, it is temporarily stopped, and the robot loads the energy meters into the turnover box one by one. Once the box is full, it is transferred manually or with the help of equipment to the lower roller line for transportation. Summary of the Invention

[0003] The present invention provides a roller line lifting and transferring device, which is part of the automated production line for electric energy meters. It can effectively cooperate with an external double-layer roller conveyor line to realize functions such as incoming material reception, position adjustment, temporary positioning stop, transfer height adjustment, and material removal and conveying of turnover boxes. The overall process is smooth and reasonable, and has strong adaptability.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A roller line lifting and transfer device includes a main profile frame, an adjusting roller line that can move up and down relative to the main profile frame, a lifting drive mechanism for driving the adjusting roller line to move up and down, a long layering bar for positioning the turnover box, and a positioning cylinder for driving the long layering bar to move horizontally;

[0006] The adjusting roller line includes a roller line support, a plurality of rotating rollers rotatably connected to the roller line support, and a roller motor for driving one of the rotating rollers. The roller line support is slidably connected to the main profile frame. The rotating rollers are arranged in sequence along the length direction of the roller line support. Among any two adjacent rotating rollers, the two rotating rollers are driven by a pulley mechanism. The pulley mechanism includes a transmission belt, a pulley provided on one rotating roller, and a pulley provided on the other rotating roller. The transmission belt is sleeved outside the pulley and is in contact with the pulley.

[0007] The lifting drive mechanism includes a cylinder mounting plate fixed on the main profile frame, a lifting cylinder arranged on the cylinder mounting plate, at least one sprocket driven to rise and fall by the lifting cylinder, and a chain cooperating with the sprocket, one end of the chain is fixed relative to the cylinder mounting plate, and the other end of the chain is fixed relative to the roller line bracket.

[0008] Preferably, there are two sprockets, which are symmetrically arranged along the lifting cylinder. A transfer seat is provided on the cylinder rod of the lifting cylinder, and a transfer shaft is provided on the transfer seat for rotation with the transfer seat. The sprocket is coaxially arranged on the transfer shaft, and in a sprocket and a chain cooperating with the sprocket: the chain passes around the sprocket from above.

[0009] Preferably, the adjusting roller line also includes an inner baffle provided on the roller line bracket, the inner baffle is located between the lifting cylinder and any rotating roller, and the upper end of the inner baffle, the top of any rotating roller and the lower end of the inner baffle are arranged from top to bottom.

[0010] Preferably, it also includes an upper buffer for contacting the roller line bracket and a lower buffer for contacting the main profile frame. The upper buffer is a hydraulic buffer, and the lower buffer is a hydraulic buffer. The main profile frame is provided with an upper buffer bracket, and the upper buffer is arranged on the upper buffer bracket. The roller line bracket is provided with a lower buffer bracket fixed relative to the roller line bracket, and the lower buffer is arranged on the lower buffer bracket.

[0011] Preferably, the cylinder rod of the positioning cylinder is connected to the long pressure strip, the cylinder body of the positioning cylinder is fixed relatively to the roller line support, the roller line support includes a side baffle, the length direction of the side baffle is parallel to the conveying direction of the roller line support, the upper end of the side baffle, the highest point of any rotating roller and the axis of any rotating roller are arranged in sequence from top to bottom, and the side baffle, the long pressure strip and the cylinder body of the positioning cylinder are arranged in sequence along the axial direction of the cylinder rod of the positioning cylinder.

[0012] Preferably, the transmission belt closest to the external roller line is the outer belt, and the rotating roller closest to the external roller line is the outer roller. The outer roller is provided with a rubber sleeve, and the roller motor drives the outer roller. It also includes a sliding shaft slidably connected to the main profile frame, and the sliding shaft is provided with a tensioning cone wheel for tensioning the outer belt. The tensioning cone wheel is rotatably connected to the sliding shaft, and the outer belt passes around the tensioning cone wheel. The outer diameter of the tensioning cone wheel gradually decreases from the adjacent adjustment roller line to the direction away from the adjustment roller line. When the long pressure strip presses the side wall of the turnover box: the outer belt is in a relaxed state; when the cylinder rod of the positioning cylinder is retracted to the limit position: the outer belt is in a tensioned state.

[0013] Preferably, the piston of the positioning cylinder divides the cylinder body into a positioning air chamber and a positioning sub-chamber, the positioning air chamber is supplied with air by an air pump, a positioning spring for resetting the piston of the positioning cylinder is provided in the positioning sub-chamber, a positioning exhaust pipe, a small exhaust hole connected to the positioning air chamber, a pressure relief valve connected to the positioning air chamber and an air intake one-way valve connected to the positioning sub-chamber is provided on the cylinder body of the positioning cylinder, an exhaust one-way valve is provided on the positioning exhaust pipe, and two guarantee mechanisms are also arranged symmetrically along the adjustment roller line, the guarantee mechanism includes a retraction cylinder provided on the main profile frame, an axle seat driven by the retraction cylinder, a vertical shaft rotatably connected to the axle seat, a driven bevel gear provided at the lower end of the vertical shaft and a friction wheel provided at the upper end of the vertical shaft, and two active bevel gears corresponding to the guarantee mechanisms are provided on the outer roller;

[0014] In the corresponding guarantee mechanism and active bevel gear: the piston of the retraction cylinder divides the inner part of the cylinder body of the retraction cylinder into a retraction air chamber and a retraction sub-chamber. The retraction sub-chamber is provided with a retraction spring for resetting the piston of the retraction cylinder. The positioning sub-chamber, the positioning exhaust pipe and the retraction air chamber are connected in sequence.

[0015] Also included is an exhaust valve system for venting the retraction air chamber.

[0016] Preferably, the exhaust valve system includes a terminal exhaust pipe, a needle valve provided on the terminal exhaust pipe and capable of being pushed open by a tensioning cone wheel, wherein the needle of the needle valve is located above the tensioning cone wheel;

[0017] For a security mechanism: the positioning sub-cavity, the positioning exhaust pipe and the withdrawal air cavity are connected in sequence, and one end of the terminal exhaust pipe is connected to the withdrawal air cavity:

[0018] When the long pressure strip presses the side wall of the turnover box, the rod of the positioning cylinder is in the extended state, and the tensioning cone wheel is separated from the ejector pin of the ejector pin valve;

[0019] When the rod of the positioning cylinder is retracted to the limit position: in the process of adjusting the roller line to rise to the limit height, at a certain moment, the tensioning cone wheel will push the ejector pin of the ejector valve upward.

[0020] The beneficial effects of the present invention are: it is a part of the automated production line for electric energy meters, and can be effectively coordinated with the external double-layer roller conveyor line to realize the functions of receiving incoming materials, adjusting positions, temporarily stopping for positioning, adjusting the transfer height, and conveying materials for turnover boxes. The overall process is smooth and reasonable, and has strong adaptability. When the two turnover boxes on the upper roller line are very close, the friction wheel can be driven by the driving gear and the driven gear using a separately reversed outer roller. The two friction wheels clamp the turnover boxes and rotate relative to each other, and the latter turnover box can be pushed back to the upper roller line. After the adjustment roller line is lowered, the friction wheel can further move slightly to completely block the latter turnover box to prevent it from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a structural diagram of embodiment 1 of the present invention;

[0022] Figure 2 is a side view of embodiment 1 of the present invention;

[0023] Figure 3 2 is a schematic diagram of the back structure of Example 1 of the present invention;

[0024] Figure 4 It is a schematic diagram of the partial structure of Example 1 of the present invention;

[0025] Figure 5 This is a schematic diagram of the partial structure of the positioning cylinder in Example 2 of the present invention;

[0026] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0027] Figure 7 Schematic diagram of the structure of several pulley mechanisms in Example 2 of the present invention;

[0028] Figure 8 It is a schematic diagram of the partial structure of Example 2 of the present invention;

[0029] Figure 9 yes Figure 8 Enlarged view of point B in the middle;

[0030] Figure 10 2 is a gas path connection diagram in Example 2 of the present invention;

[0031] Figure 11 This is a schematic structural diagram of the tensioning cone wheel and the ejector valve in Example 2 of the present invention;

[0032] Figure 12 It is a structural schematic diagram of the friction wheel in a certain state in Example 2 of the present invention.

[0033] Reference numerals: main profile frame 1, long pressure strip 2.1, positioning cylinder 2.2, positioning air cavity 2.2a, positioning sub-cavity 2.2b, positioning spring 2.21, positioning exhaust pipe 2.22, roller line support 201, side baffle 201.1, rotating roller 202, pulley mechanism 203, transmission belt 203.1, pulley 203.2, inner baffle 204, cylinder mounting plate 301, lifting cylinder 302, sprocket 303, chain 304, adapter 305, adapter Shaft 306, upper buffer 4.1, lower buffer 4.2, upper buffer bracket 4.3, lower buffer bracket 4.4, sliding shaft 5.1, tensioning cone gear 5.2, air pump 601, retraction cylinder 7.1, retraction air chamber 7.1a, retraction sub-chamber 7.1b, retraction spring 7.11, shaft seat 701, vertical shaft 702, driven bevel gear 703, friction wheel 704, driving bevel gear 705, terminal exhaust pipe 8.1, ejector valve 8.2, upper roller line 9.1, turnover box 9.2. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] Example 1:

[0036] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown,

[0037] A roller line lifting and transfer device, comprising a main profile frame 1, an adjusting roller line that can move up and down relative to the main profile, a lifting drive mechanism for driving the adjusting roller line to move up and down, a long layering bar 2.1 for positioning the turnover box, and a positioning cylinder 2.2 for driving the long layering bar 2.1 to move horizontally;

[0038] The regulating roller line includes a roller line support 201, a plurality of rotating rollers 202 rotatably connected to the roller line support 201, and a roller motor for driving one of the rotating rollers 202. The roller line support 201 is slidably connected to the main profile frame. The rotating rollers 202 are arranged in sequence along the length direction of the roller line support 201. Among any two adjacent rotating rollers 202, the two rotating rollers 202 are driven by a pulley mechanism 203. The pulley mechanism 203 includes a transmission belt 203.1, a pulley 203.2 provided on one rotating roller 202, and a pulley 203.2 provided on the other rotating roller 202. The transmission belt 203.1 is sleeved outside the pulley 203.2 and is in contact with the pulley 203.2.

[0039] The lifting drive mechanism includes a cylinder mounting plate 301 fixed on the main profile frame 1, a lifting cylinder 302 arranged on the cylinder mounting plate 301, at least one sprocket 303 driven to lift by the lifting cylinder 302, and a chain 304 coordinated with the sprocket 303, one end of the chain 304 is relatively fixed to the cylinder mounting plate 301, and the other end of the chain 304 is relatively fixed to the roller line bracket 201.

[0040] The sliding direction of the roller line support 201 is vertical. In the pulley mechanism 203, the transmission belt 203.1 is closed at both ends and passes around two pulleys 203.2, and the transmission belt 203.1 is tensioned.

[0041] The roller conveyor line on the upper layer of the external double-layer roller line is called the upper roller line. Workers put an empty turnover box on the upper roller line at regular intervals. The upper roller line works continuously and conveys an empty turnover box to the present invention at regular intervals. At the present invention, the robot grabs the electric energy meter and places it in the empty turnover box on the present invention (the upper roller line may be paused during the operation of the robot). The roller conveyor line on the lower layer of the external double-layer roller line is called the lower roller line. The lower roller line works continuously and the full turnover boxes are conveyed to the subsequent workstations through the lower roller line.

[0042] Specifically, the lifting cylinder 302 drives the adjustment roller line up and down, aligning the height of its rotating roller 202 with that of the rollers in the upper roller line. The upper roller line then transfers a portion of an empty crate (referred to as a "to-be-loaded crate") onto the rotating roller 202 of the present invention. Rotating roller 202 rotates continuously, driving the crate until it reaches the end of the present invention away from the upper roller line (rotating roller 202 can pause, i.e., temporarily stop). Positioning cylinder 2.2 then drives the long press bar 2.1 to move, pushing the to-be-loaded crate into contact with roller line support 201, thereby positioning the crate. The robotic arm then grabs and places each energy meter into the to-be-loaded crate until it is full (a fully loaded crate is considered a "full crate"). Once the long press bar 2.1 has positioned the crate or is fully loaded, positioning cylinder 2.2 resets it. The lifting cylinder 302 drives the adjustment roller line down, aligning the height of its rotating rollers 202 with the height of the rollers in the lower roller line. The rotating rollers 202 resume operation and rotate in the reverse direction, moving the full container toward the lower roller line. Ultimately, through the combined action of the rotating rollers 202 and the lower roller line, the full container reaches the lower roller line and is transported away (to a subsequent workstation). After this process is complete, the adjustment roller line can rise again (aligning the height of its rotating rollers 202 with the height of the rollers in the upper roller line), completing a turnover box transfer. The upper roller line can then resume forward rotation to continue operation. Before a turnover box transfer is complete, the next empty transfer box on the upper roller line should not reach the present invention. However, after a turnover box transfer is complete, the next empty transfer box on the upper roller line can reach the present invention.

[0043] like Figure 1 、 Figure 3 As shown, there are two sprockets 303, and the two sprockets 303 are symmetrically arranged along the lifting cylinder 302. A transfer seat 305 is provided on the cylinder rod of the lifting cylinder 302, and a transfer shaft 306 rotatably connected to the transfer seat 305 is provided on the transfer seat 305. The sprocket 303 is coaxially arranged on the transfer shaft 306. In a sprocket 303 and a chain 304 cooperating with the sprocket 303: the chain 304 passes around the sprocket 303 from above.

[0044] The lifting cylinder 302 can drive the adapter 305 to rise and fall, which in turn drives the adapter shaft 306 and sprocket 303 to rise and fall. Since one end of the chain 304 is relatively fixed to the cylinder mounting plate 301 and the other end of the chain 304 is relatively fixed to the roller line support 201, and the chain 304 passes around the sprocket 303 from above, as the sprocket 303 rotates while rising, it partially lifts up the chain 304, thereby pulling up the roller line support 201, so that the adjustment roller line can be raised. As the sprocket 303 rotates while descending, the chain 304 partially descends, and the roller line support 201 also descends, so that the adjustment roller line can be lowered.

[0045] like Figure 1 、 Figure 2 As shown, the adjusting roller line also includes an inner baffle 204 provided on the roller line bracket 201, and the inner baffle 204 is located between the lifting cylinder 302 and any rotating roller 202, and the upper end of the inner baffle 204, the top of any rotating roller 202 and the lower end of the inner baffle 204 are arranged from top to bottom.

[0046] The inner baffle 204 can assist in positioning. Specifically, the rotating rollers 202 of the adjusting roller line rotate, which can drive the turnover box to be loaded to move away from the upper roller line until one side of the turnover box to be loaded is attached to the inner baffle 204.

[0047] like Figure 1 、 Figure 2 As shown, it also includes an upper buffer 4.1 for contacting the roller line support 201 and a lower buffer 4.2 for contacting the main profile frame 1. The upper buffer 4.1 is a hydraulic buffer, and the lower buffer 4.2 is a hydraulic buffer. The main profile frame 1 is provided with an upper buffer support 4.3, and the upper buffer 4.1 is arranged on the upper buffer support 4.3. The roller line support 201 is provided with a lower buffer support 4.4 fixed relative to the roller line support 201, and the lower buffer 4.2 is arranged on the lower buffer support 4.4.

[0048] Hydraulic buffers are conventional technology. Before the roller line support 201 rises to its upper limit, it first contacts the upper buffer 4.1, thereby preventing damage to the roller line support 201 due to excessive impact. Before the roller line support 201 descends to its lower limit, the lower buffer 4.2 first contacts the main profile frame 1, thereby preventing damage to the roller line support 201 due to excessive impact.

[0049] like Figure 1 、 Figure 4 As shown, the cylinder rod of the positioning cylinder 2.2 is connected to the long pressure strip 2.1, the cylinder body of the positioning cylinder 2.2 is relatively fixed to the roller line support 201, and the roller line support 201 includes a side baffle 201.1. The length direction of the side baffle 201.1 is parallel to the conveying direction of the roller line support 201. The upper end of the side baffle 201.1, the highest point of any rotating roller 202 and the axis of any rotating roller 202 are arranged in sequence from top to bottom, and the side baffle 201.1, the long pressure strip 2.1 and the cylinder body of the positioning cylinder 2.2 are arranged in sequence along the axial direction of the cylinder rod of the positioning cylinder 2.2.

[0050] The long pressure strip 2.1 and the side baffle 201.1 can clamp the turnover box to be loaded from opposite sides, so as to accurately and efficiently position the turnover box to be loaded.

[0051] Example 2: Based on Example 1,

[0052] like Figure 5 、 Figure 6 、 Figure 7 As shown, the transmission belt 203.1 closest to the outer roller line is the outer belt, and the rotating roller 202 closest to the outer roller line is the outer roller. The roller motor drives the outer roller, and the outer roller is provided with a rubber sleeve. It also includes a sliding shaft 5.1 slidingly connected to the main profile frame 1, and the sliding shaft 5.1 is provided with a tensioning cone wheel 5.2 for tensioning the outer belt. The tensioning cone wheel 5.2 is rotatably connected to the sliding shaft 5.1, and the outer belt passes around the tensioning cone wheel 5.2. The outer diameter of the tensioning cone wheel 5.2 gradually decreases from the direction adjacent to the adjustment roller line to the direction away from the adjustment roller line. When the long pressure strip 2.1 presses the side wall of the turnover box: the outer belt is in a relaxed state; when the cylinder rod of the positioning cylinder 2.2 is retracted to the limit position: the outer belt is in a tensioned state.

[0053] As mentioned above, workers put an empty turnover box on the upper roller line at regular intervals, and the upper roller line keeps working, transporting an empty turnover box to the present invention at regular intervals; before a turnover box transfer process is completed, the next empty transfer box on the upper roller line should not reach the present invention, and after a turnover box transfer process is completed, the next empty transfer box on the upper roller line can reach the present invention. The above is a setting made in consideration of the overall cost, but there are also some corresponding problems: manual loading has objective conditions such as loading position deviation and loading interval deviation, and the inherent characteristics of the upper roller line make it impossible to ensure that the turnover box moves at a uniform speed during the transportation process (the turnover box is driven by friction, and different angles of the turnover box and different contact positions with the upper roller line will cause the turnover box to move at a different speed and direction). It is inevitable that two turnover boxes will be relatively close or even very close and touching each other. In this case, it is possible that the next empty transfer box on the upper roller line will reach the present invention before the transfer process of one turnover box is completed. In this case, it can be considered to set a corresponding traditional blocking structure (such as a baffle, a baffle bar, etc.) at the connection point between the present invention and the upper roller line (in actual conditions, considering the design and landing rationality of the frame structure, the main profile frame 1 and other structures, there is a distance between the connection point between the present invention and the upper roller line, but as long as it does not affect the incoming material transportation of the turnover box), after the current turnover box completely enters the scope of the present invention, the blocking structure will take action to block between the present invention and the upper roller line, so that the next turnover box cannot enter the scope of the present invention. However, there is another situation where the two turnover boxes are very close or even touching each other, and then the traditional blocking structure will push down, lift up or even overturn the next turnover box if it wants to block between the present invention and the upper roller line. Therefore, the effect of setting a traditional blocking structure is average.

[0054] So, after the current turnover box is positioned on the present invention, is it feasible to reverse the rotating roller 202 (roller motor)? The answer is no, because in this case, if the long pressure bar 2.1 has been reset, the previous turnover box will also retreat, resulting in positioning failure, affecting the robot's completion of the packing of the electricity meter. If the long pressure bar 2.1 is not reset, the rotating roller 202 will either not rotate or will "grind the bottom", that is, many rotating rollers 202 will rub the bottom of the previous turnover box vigorously, which can easily cause damage to the turnover box.

[0055] In view of this, the present invention provides a solution, which will be explained with reference to the accompanying drawings. Figure 6 In the figure, "the uppermost rotating roller 202 is the outer roller, and the transmission belt 203.1 passing around the outer roller is the outer belt." Figure 7 In the figure, "the rightmost rotating roller 202 is the outer roller, and the rightmost transmission belt 203.1 is the outer belt", Figure 9 "The only rotating roller 202 that appears in the figure is the outer roller, and the only transmission belt 203.1 that appears in the figure is the outer belt."

[0056] Initially, the outer belt is tensioned by the tensioning bevel pulley 5.2 and the two pulleys 203.2 around which the outer belt passes. When the positioning cylinder 2.2 drives the long pressing bar 2.1 to move and position the crate to be loaded, the positioning cylinder 2.2 also pushes the tensioning bevel pulley 5.2 toward the rotating roller 202 via the pulley 5.1. As a result, the tensioning bevel pulley 5.2 is no longer able to tension the outer belt. As the outer roller rotates, it also stops driving the other rotating rollers 202. Simultaneously, after the equal-length pressing bar 2.1 has moved into position and positioned the crate to be loaded, the roller motor drives the outer rollers in reverse. Because the outer rollers are covered with rubber sleeves, they provide a greater retraction force to the next crate than conventional rollers, allowing the next crate to leave the present invention and return most of it to the upper roller line (a crate can only return to the point just after leaving the outer rollers, but not all of it), until the upper roller line pauses.

[0057] like Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12As shown, the piston of the positioning cylinder 2.2 divides the inner part of the cylinder body of the tensioning cylinder into a positioning air chamber 2.2a and a positioning sub-chamber 2.2b. The positioning air chamber 2.2a is supplied with air by an air pump 601. The positioning sub-chamber 2.2b is provided with a positioning spring 2.21 for resetting the piston of the positioning cylinder 2.2. The cylinder body of the positioning cylinder 2.2 is provided with a positioning exhaust pipe 2.22, a small exhaust hole connected to the positioning air chamber 2.2a, a pressure relief valve connected to the positioning air chamber 2.2a, and a pressure relief valve connected to the positioning sub-chamber 2.2b. An air intake check valve and an exhaust check valve are provided on the positioning exhaust pipe 2.22. The system also includes two securing mechanisms arranged symmetrically along the adjustment roller line. These securing mechanisms comprise a retraction cylinder 7.1 mounted on the main profile frame, an axle seat 701 driven by the retraction cylinder 7.1, a vertical shaft 702 rotatably connected to the axle seat 701, a driven bevel gear 703 mounted at the lower end of the vertical shaft 702, and a friction wheel 704 mounted at the upper end of the vertical shaft 702. Two active bevel gears 705 corresponding to the securing mechanisms are provided on the outer rollers.

[0058] In the corresponding safeguard mechanism and active bevel gear 705: the piston of the retracting cylinder 7.1 divides the inner part of the cylinder body of the retracting cylinder 7.1 into a retracting air chamber 7.1a and a retracting sub-chamber 7.1b. The retracting sub-chamber 7.1b is provided with a retracting spring 7.11 for resetting the piston of the retracting cylinder 7.1. The positioning sub-chamber 2.2b, the positioning exhaust pipe 2.22 and the retracting air chamber 7.1a are sequentially connected;

[0059] It also includes an exhaust valve system for exhausting the retraction air chamber 7.1a.

[0060] In the corresponding protection mechanism and the active bevel gear 705 : when the long pressure bar 2 . 1 presses the side wall of the turnover box, the active bevel gear 705 meshes with the driven bevel gear 703 .

[0061] like Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 As shown, the exhaust valve system includes an end exhaust pipe 8.1, a needle valve 8.2 provided on the end exhaust pipe 8.1 and capable of being pushed open by a tensioning cone wheel 5.2, and the ejector pin of the needle valve 8.2 is located above the tensioning cone wheel 5.2;

[0062] For one protection mechanism: the positioning sub-cavity 2.2b, the positioning exhaust pipe 2.22 and the retraction air cavity 7.1a are connected in sequence, and one end of the terminal exhaust pipe 8.1 is connected to the retraction air cavity 7.1a;

[0063] When the long pressure strip 2.1 presses the side wall of the turnover box, the cylinder rod of the positioning cylinder 2.2 is in the extended state, and the tensioning cone wheel 5.2 is separated from the ejector pin of the ejector valve 8.2.

[0064] When the rod of the positioning cylinder 2.2 is retracted to the limit position: when the regulating roller line rises to the limit height, at a certain moment, the tensioning cone wheel 5.2 will push the ejector of the ejector valve 8.2 upward.

[0065] The vertical shaft 702 and the shaft seat 701 are frictionally self-locking. The rod of the positioning cylinder 2.2 passes through the positioning sub-chamber 2.2b, and a sliding seal is formed between the rod and the cylinder body of the positioning cylinder 2.2. The rod of the tensioning cylinder passes through the tensioning sub-chamber, which is connected to the atmosphere. The air intake check valve can pass from the atmosphere through the air intake check valve to the positioning sub-chamber 2.2b, while the air exhaust check valve can pass from the positioning sub-chamber 2.2b through the exhaust check valve to the atmosphere. The axis of the ejector pin of the ejector pin valve 8.2 does not coincide with the axis of the tensioning cone wheel 5.2.

[0066] When air pump 601 is supplying air, positioning chamber 2.2a is continuously inflated, and the piston of positioning cylinder 2.2 moves until the rod of positioning cylinder 2.2 reaches its limit. The small exhaust port connected to positioning chamber 2.2a continuously releases a small amount of air, but the exhaust rate is much slower than the inflation rate of positioning chamber 2.2a. The pressure relief valve automatically releases pressure to prevent excessive pressure in positioning chamber 2.2a. When air pump 601 stops, positioning spring 2.21 activates the piston, rod, long pressure bar, and tensioning cone of positioning cylinder 2.2, returning it to its original position (atmospheric air can enter positioning sub-chamber 2.2b through the inlet check valve). When the rod of retracting cylinder 7.1 reaches its limit, if ejector valve 8.2 is disconnected, the piston of retracting cylinder 7.1 is temporarily immobilized, allowing friction wheel 704 to continue to restrict the turnover box.

[0067] As mentioned above, the outer rollers can provide a significant retracting force to the next turnover box, allowing it to leave the present invention and mostly return to the upper roller line (the turnover box can only return to a point just after leaving the outer rollers, and cannot fully return to the upper roller line) until the upper roller line pauses. While this prevents the next turnover box from prematurely or partially entering the scope of the present invention, which could cause it to fall and tip over when the roller line support 201 descends, the retracted turnover box is still partially "suspended." Furthermore, the retracted turnover box is empty and can easily fall due to vibration and other factors. In view of this, in this embodiment, when the cylinder rod of the positioning cylinder 2.2 is in the retracted limit position, if the height of the rotating roller 202 regulating the roller line is aligned with the height of the rollers in the upper roller line, the ejector pin of the ejector pin valve 8.2 is pressed, and the ejector pin valve 8.2 is in a blocked state. Ejector valve 8.2 is a prior art device. Applying external force can cause the ejector pin to retract, and after releasing the force, the ejector pin automatically extends and resets. The ejector pin 8.2 selected in the present invention is in a connected state when the ejector pin is compressed into place, and is in a blocked state when the ejector pin is extended to the limit position (as long as the ejector pin begins to extend, the ejector pin 8.2 begins to connect).

[0068] When the positioning cylinder 2.2 drives the long pressure bar 2.1 to move and pushes the turnover box to be loaded for positioning, the positioning cylinder 2.2 also moves with the tensioning cone wheel 5.2 and gradually leaves the ejector of the ejector valve 8.2. The ejector automatically extends gradually (the ejector valve 8.2 is still in a connected state for a period of time at the beginning). Part of the gas in the positioning air cavity 2.2a will be pressed into each retraction air cavity 7.1a through the positioning exhaust pipe 2.22. The cylinder rods of the two retraction cylinders 7.1 extend relative to each other, so that the two friction wheels 704 will clamp the turnover box to be loaded from opposite sides. The driven bevel gear 703 is also meshed with the corresponding active bevel gear 705. Since the active bevel gear 705 rotates in reverse along with the roller motor and the outer roller, the driven bevel gear 703 also rotates, and drives the friction wheel 704 to rotate through the vertical shaft 702. The two friction wheels 704 rotate relative to each other along the two opposite side walls of the turnover box, so that the friction thrust can be used to drive the turnover box to leave the adjustment roller line (the turnover box 9.2 is withdrawn toward the upper roller line 9.1), and the turnover box 9.2 is also in a state of being about to leave the friction wheel 704 but being clamped by the friction wheel 704 (such as Figure 12As shown, due to the high air pressure in the tensioning air chamber, the two friction wheels 704 tend to move closer together, but the driven bevel gear 703 is limited by the active bevel gear 705, temporarily preventing the two friction wheels 704 from moving closer together. Afterwards, the adjustment roller line can descend smoothly. When the turnover box is full, the adjustment roller line begins to descend. Once the adjustment roller line begins to descend, the driven bevel gear 703 is no longer limited by the active bevel gear 705, and the two friction wheels 704 continue to move closer together (while also using the rolling wheels to continue pushing the turnover box a little further toward the upper roller line). This is equivalent to holding the turnover box from the side away from the upper roller line 9.1, thus completely preventing the turnover box from falling off the upper roller line. Of course, at this time, the driven bevel gear 703 will interfere with the adjustment roller line's ascent into position (if the active bevel gear 705 wants to rise with the adjustment roller line, the driven bevel gear 703 will interfere with the position of the active bevel gear 705). This issue will be explained later.

[0069] After the regulating roller line drops to the limit position, the air pump 601 stops, and under the action of the positioning spring 2.21, the piston and cylinder rod of the positioning cylinder 2.2 are reset, and the tensioning cone wheel 5.2 is also reset (after the tensioning cone wheel 5.2 is reset, if it rises again, it can hit the ejector pin). When the lower roller line is full of boxes, the adjusting roller line of the present invention can be raised and reset. Because "when the cylinder rod of the positioning cylinder 2.2 is retracted to the limit position: during the process of the adjusting roller line rising to the limit height, at a certain moment, the tensioning cone wheel 5.2 will push the ejector of the ejector valve 8.2 upward", so after the adjusting roller line has risen for a period of time, when the adjusting roller line begins to approach the upper limit position, at a certain moment, the ejector is pushed, the ejector valve 8.2 is connected, and under the action of the tensioning spring, the vertical shaft 702 and the driven bevel gear 703 are reset, and the gas in the tensioning air cavity is discharged through the end exhaust pipe 8.1 (the ejector valve 8.2). In this way, the piston, cylinder rod of the tensioning cylinder, the driven bevel gear 703 and the friction wheel 704 can be completely reset (the driven bevel gear 703 will no longer interfere with the active bevel gear 705, the active bevel gear 705 can smoothly rise to its position, and the adjusting roller line can also smoothly rise to its position), so that the next turnover box transfer can be carried out. When the friction wheel 704 is reset, the regulating roller line begins to approach the upper limit position, so if the turnover box falls at this time, it is only equivalent to sliding to the regulating roller line, and the turnover box will not overturn, which will not affect the overall working process.

[0070] The embodiments of the present invention are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core ideas. At the same time, for those skilled in the art, according to the ideas of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A roller line lifting and transferring device, characterized in that: It includes a main profile frame, an adjusting roller line that can move up and down relative to the main profile frame, a lifting drive mechanism for driving the adjusting roller line to move up and down, a long layering bar for positioning the turnover box, and a positioning cylinder for driving the long layering bar to move horizontally; The adjusting roller line includes a roller line support, a plurality of rotating rollers rotatably connected to the roller line support, and a roller motor for driving one of the rotating rollers. The roller line support is slidably connected to the main profile frame. The rotating rollers are arranged in sequence along the length direction of the roller line support. Among any two adjacent rotating rollers, the two rotating rollers are driven by a pulley mechanism. The pulley mechanism includes a transmission belt, a pulley provided on one rotating roller, and a pulley provided on the other rotating roller. The transmission belt is sleeved outside the pulley and is in contact with the pulley. The lifting drive mechanism includes a cylinder mounting plate fixed to the main profile frame, a lifting cylinder provided on the cylinder mounting plate, at least one sprocket driven to rise and fall by the lifting cylinder, and a chain coordinated with the sprocket, one end of the chain being fixed relative to the cylinder mounting plate, and the other end of the chain being fixed relative to the roller line bracket; Among them, the transmission belt closest to the outer roller line is the outer belt, the rotating roller closest to the outer roller line is the outer roller, a rubber sleeve is provided on the outer roller, and the roller motor drives the outer roller, and also includes a sliding shaft slidably connected to the main profile frame, and the sliding shaft is provided with a tensioning cone wheel for tensioning the outer belt, the tensioning cone wheel is rotatably connected to the sliding shaft, and the outer belt passes around the tensioning cone wheel, and the outer diameter of the tensioning cone wheel gradually decreases from the adjacent adjustment roller line to the direction away from the adjustment roller line. When the long pressure strip presses the side wall of the turnover box: the outer belt is in a relaxed state; when the cylinder rod of the positioning cylinder is retracted to the limit position: the outer belt is in a tensioned state; The piston of the positioning cylinder divides the cylinder body into a positioning air chamber and a positioning sub-chamber. The positioning air chamber is supplied with air by an air pump. A positioning spring for resetting the piston of the positioning cylinder is provided in the positioning sub-chamber. A positioning exhaust pipe, a small exhaust hole connected to the positioning air chamber, a pressure relief valve connected to the positioning air chamber and an air intake one-way valve connected to the positioning sub-chamber are provided on the cylinder body of the positioning cylinder. An exhaust one-way valve is provided on the positioning exhaust pipe. The positioning cylinder also includes two guarantee mechanisms symmetrically arranged along the adjustment roller line. The guarantee mechanism includes a retraction cylinder provided on the main profile frame, an axle seat driven by the retraction cylinder, a vertical shaft rotatably connected to the axle seat, a driven bevel gear provided at the lower end of the vertical shaft and a friction wheel provided at the upper end of the vertical shaft. Two active bevel gears corresponding to the guarantee mechanisms are provided on the outer roller; In the corresponding guarantee mechanism and active bevel gear: the piston of the retraction cylinder divides the inner part of the cylinder body of the retraction cylinder into a retraction air chamber and a retraction sub-chamber. The retraction sub-chamber is provided with a retraction spring for resetting the piston of the retraction cylinder. The positioning sub-chamber, the positioning exhaust pipe and the retraction air chamber are connected in sequence. Also included is an exhaust valve system for venting the retraction air chamber.

2. The roller line lifting and transferring device according to claim 1 is characterized in that: There are two sprockets, which are symmetrically arranged along the lifting cylinder. A transfer seat is provided on the cylinder rod of the lifting cylinder, and a transfer shaft rotatably connected to the transfer seat is provided on the transfer seat. The sprocket is coaxially arranged on the transfer shaft. In a sprocket and a chain cooperating with the sprocket: the chain passes around the sprocket from above.

3. The roller line lifting and transferring device according to claim 1, characterized in that: The adjusting roller line also includes an inner baffle provided on the roller line bracket, the inner baffle is located between the lifting cylinder and any rotating roller, and the upper end of the inner baffle, the top of any rotating roller and the lower end of the inner baffle are arranged from top to bottom.

4. The roller line lifting and transferring device according to claim 1, characterized in that: It also includes an upper buffer for contacting the roller line bracket and a lower buffer for contacting the main profile frame. The upper buffer is an oil pressure buffer, and the lower buffer is an oil pressure buffer. The main profile frame is provided with an upper buffer bracket, and the upper buffer is arranged on the upper buffer bracket. The roller line bracket is provided with a lower buffer bracket fixed relative to the roller line bracket, and the lower buffer is arranged on the lower buffer bracket.

5. A roller line lifting and transferring device according to claim 1, 2, 3 or 4, characterized in that: The cylinder rod of the positioning cylinder is connected to the long pressure strip, and the cylinder body of the positioning cylinder is relatively fixed to the roller line support. The roller line support includes a side baffle, and the length direction of the side baffle is parallel to the conveying direction of the roller line support. The upper end of the side baffle, the highest point of any rotating roller and the axis of any rotating roller are arranged in sequence from top to bottom, and the side baffle, the long pressure strip and the cylinder body of the positioning cylinder are arranged in sequence along the axial direction of the cylinder rod of the positioning cylinder.

6. The roller line lifting and transferring device according to claim 1, characterized in that: The exhaust valve system includes a terminal exhaust pipe, a needle valve provided on the terminal exhaust pipe and capable of being pushed open by a tensioning cone wheel, wherein the needle of the needle valve is located above the tensioning cone wheel; For a security mechanism: the positioning sub-cavity, the positioning exhaust pipe and the withdrawal air cavity are connected in sequence, and one end of the terminal exhaust pipe is connected to the withdrawal air cavity: When the long pressure strip presses the side wall of the turnover box, the rod of the positioning cylinder is in the extended state, and the tensioning cone wheel is separated from the ejector pin of the ejector pin valve; When the rod of the positioning cylinder is retracted to the limit position: in the process of adjusting the roller line to rise to the limit height, at a certain moment, the tensioning cone wheel will push the ejector pin of the ejector valve upward.

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