Lifting mechanism, loading and unloading device and PCB (Printed Circuit Board) processing equipment

Abstract

The utility model belongs to the technical field of lifting mechanisms, and particularly relates to a lifting mechanism, a feeding and discharging device and PCB machining equipment. The lifting mechanism comprises a fixed seat, a movable part, a driving assembly and a guide assembly; the driving assembly is installed on the fixed seat, the guiding assembly comprises a guiding shaft and a guiding part, the guiding part is installed on the moving part, the guiding shaft is installed on the fixed seat, the guiding part is arranged on the periphery of the guiding shaft in a sleeving mode, and the driving assembly can drive the moving part to reciprocate in the vertical direction; a lubricating cavity is formed between the inner wall face of the guide part and the outer circumferential face of the guide shaft, a connector is arranged on the guide part and communicates with the lubricating cavity, so that a lubricating medium can be injected into the lubricating cavity through the connector, movement of the guide part can be lubricated through the lubricating medium, abrasion caused by friction between the guide part and the guide shaft is reduced, and the service life of the guide shaft is prolonged. Therefore, the situation that the moving part is clamped due to abrasion is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting mechanisms, and particularly relates to a lifting mechanism, a loading and unloading device, and a PCB processing device. Background Art

[0002] The existing lifting mechanism is applied to the loading and unloading machine of a PCB processing device, and its function is to move the magazine stacked with PCBs up and down to meet the functional requirements of the loading and unloading machine for picking and placing boards.

[0003] The lifting mechanism includes a moving mechanism and a fixing mechanism, and the bearing on the moving mechanism is connected to the guide shaft of the fixing mechanism.

[0004] However, when there are many PCBs stacked in the magazine, due to the large load, the center of gravity of the magazine is in a suspended state, and the self-weight of the entire lifting mechanism and the weight of the magazine bring serious pressure to the bearing, resulting in serious wear of the bearing and the guide shaft, and reducing the service life. And due to the wear, the moving mechanism is prone to jamming, resulting in the inability of the moving mechanism to continue descending. The moving mechanism is usually connected to the driving mechanism by means of a chain or a rope. Since the stop of the moving mechanism is not sensed, when the driving mechanism continues to rotate, the chain or the rope may bear excessive tension and break, resulting in the dropping of the moving mechanism and damage to the PCBs in the magazine. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is: aiming at the problem that the moving mechanism of the existing lifting mechanism will jam, resulting in the inability of the moving mechanism to continue descending, a lifting mechanism, a loading and unloading device, and a PCB processing device are provided.

[0006] To solve the above technical problem, on the one hand, an embodiment of the utility model provides a lifting mechanism, including a fixed seat, a moving part, a driving component, and a guiding component; the driving component is installed on the fixed seat, and the output end of the driving component is connected to the moving part;

[0007] The guiding component includes a guide shaft and a guiding part, the guiding part is installed on the moving part, the guide shaft is installed on the fixed seat, the guiding part is sleeved on the outer periphery of the guide shaft, and the driving component can drive the moving part to reciprocate vertically;

[0008] A lubricating cavity is formed between the inner wall surface of the guiding part and the outer peripheral surface of the guide shaft, and a joint is arranged on the guiding part, and the joint is communicated with the lubricating cavity to be able to inject a lubricating medium into the lubricating cavity through the joint.

[0009] Optionally, the guiding portion includes a mounting seat, a first bearing, and a second bearing. The mounting seat is mounted on the moving portion. An accommodation cavity is formed inside the mounting seat. The first bearing is disposed in the accommodation cavity and sleeved on the outer periphery of the guiding shaft. The second bearing is disposed in the accommodation cavity and sleeved on the outer periphery of the guiding shaft;

[0010] The lubrication cavity is formed between the inner wall surface of the accommodation cavity and the outer peripheral surface of the guiding shaft and is located between the first bearing and the second bearing in the axial direction of the guiding shaft.

[0011] Optionally, a first sealing ring is disposed at one end of the first bearing facing away from the second bearing. The inner ring of the first sealing ring abuts against the outer peripheral surface of the guiding shaft, and the outer ring of the first sealing ring abuts against the inner wall surface of the accommodation cavity to seal the gap between the end of the first bearing facing away from the second bearing and the guiding shaft;

[0012] A second sealing ring is disposed at one end of the second bearing facing away from the first bearing. The inner ring of the second sealing ring abuts against the outer peripheral surface of the guiding shaft, and the outer ring of the second sealing ring abuts against the inner wall surface of the accommodation cavity to seal the gap between the end of the second bearing facing away from the first bearing and the guiding shaft.

[0013] Optionally, the mounting seat includes a first bearing seat and a second bearing seat. The first bearing seat and the second bearing seat are oppositely arranged on the moving portion along the axial direction of the guiding shaft;

[0014] The accommodation cavity includes a first accommodation cavity and a second accommodation cavity. The first accommodation cavity is formed in the first bearing seat. The first bearing is disposed at one end of the first accommodation cavity away from the second bearing seat. The second accommodation cavity is formed in the second bearing seat. The second bearing is disposed at one end of the second accommodation cavity away from the first bearing seat;

[0015] The lubrication cavity includes a first cavity and a second cavity that communicate with each other. The first cavity is formed between the inner wall surface of the first accommodation cavity and the outer peripheral surface of the guiding shaft. The second cavity is formed between the inner wall surface of the second accommodation cavity and the outer peripheral surface of the guiding shaft.

[0016] Optionally, a through hole is provided on the moving portion. The guiding shaft is passed through the through hole. Axial ends of the guiding shaft are connected to the fixed seat. A connection cavity is formed between the inner wall surface of the through hole and the outer peripheral surface of the guiding shaft;

[0017] The connection cavity communicates the first cavity and the second cavity.

[0018] Optionally, the moving part includes a connecting member and a plurality of support arms. The plurality of support arms are spaced apart on the connecting member, and the plurality of support arms are used to carry the silo.

[0019] The through hole axially penetrates the connecting member along the axial direction of the guiding shaft, and the first bearing seat and the second bearing seat are installed on opposite sides of the connecting member in the axial direction of the guiding shaft.

[0020] Optionally, an injection channel is provided on one of the first bearing seat and the second bearing seat. One end of the injection channel is connected to the lubrication cavity, and the other end of the injection channel is connected to the joint.

[0021] Optionally, a plurality of guiding shafts are provided, and a plurality of guiding parts are provided. Each guiding part is sleeved on a corresponding guiding shaft.

[0022] An oil distribution block adapted to be connected to an oil inlet device is provided on the moving part. A plurality of interfaces are provided on the oil distribution block, and the plurality of interfaces are respectively and correspondingly connected to the joints of the plurality of guiding parts.

[0023] Optionally, the driving assembly includes a driving member, an annular connecting member, a first winding member and a second winding member. The output end of the driving member is connected to the first winding member, and the driving member and the second winding member are installed on the fixed seat.

[0024] One end of the annular connecting member is connected to one end of the moving part along the axial direction of the guiding shaft, and the other end of the annular connecting member sequentially bypasses the first winding member and the second winding member and is connected to the other end of the moving part along the axial direction of the guiding shaft.

[0025] Optionally, the annular connecting member includes a connecting body, a first connecting rod and a second connecting rod. The first connecting rod and the second connecting rod are connected to two ends of the connecting body in the length direction.

[0026] A first mounting portion and a second mounting portion are provided on the moving part. The first connecting rod is connected to the first mounting portion, and the second connecting rod is connected to the second mounting portion.

[0027] The first winding member includes a first upper sprocket and a second upper sprocket, and the first upper sprocket and the second upper sprocket are connected to the output end of the driving member.

[0028] The second winding member includes a first lower sprocket, a second lower sprocket and a sprocket shaft. The sprocket shaft is connected between the first lower sprocket and the second lower sprocket.

[0029] The annular connecting members are provided with two, namely a first chain and a second chain, the first chain is wound around the first upper sprocket and the first lower sprocket, and the second chain is wound around the second upper sprocket and the second lower sprocket;

[0030] The guide shaft is provided with an insertion hole, and the insertion hole is used to insert a lever, so that the guide shaft is driven to rotate around its axis by moving the lever.

[0031] On the other hand, an embodiment of the utility model provides a loading and unloading device, including a material bin and the lifting mechanism as described above, wherein the material bin is used to load material plates, and the material bin is placed on the moving part.

[0032] On the other hand, an embodiment of the utility model provides a PCB processing equipment, including a machine platform, a processing body, a robot and the loading and unloading device as described above, the processing body is arranged on the machine platform, the robot is arranged on the loading and unloading device, the robot is used for transferring the material plate between the material bin and the machine platform, and the processing body is used for processing the material plate.

[0033] The lifting mechanism provided by the embodiment of the utility model can lubricate the movement of the guide part through the lubricating medium in the lubrication chamber during the reciprocating movement of the moving part along the guide shaft, thereby reducing the friction between the guide part and the guide shaft, reducing the wear of the guide part and the guide shaft, and further reducing the jamming of the moving part caused by wear, so that the moving part can still maintain stable operation when driving the silo to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of a lifting mechanism provided by an embodiment of the utility model;

[0035] Figure 2 It is an exploded view of a lifting mechanism provided by an embodiment of the utility model;

[0036] Figure 3 This is a schematic diagram of the assembly of the guide shaft and the guide part provided by one embodiment of the utility model;

[0037] Figure 4 It is a schematic diagram of a guide portion provided by an embodiment of the utility model;

[0038] Figure 5 It is a schematic diagram of the assembly of the annular connecting member and the moving part provided by one embodiment of the utility model;

[0039] Figure 6 It is a schematic diagram of a ring-shaped connecting piece provided in one embodiment of the utility model.

[0040] The reference numerals in the specification are as follows:

[0041] 1. Fixed seat

[0042] 2. Moving part; 21. Connecting piece; 211. Through hole; 212. Connecting cavity; 213. Oil distribution block; 2131. Interface; 214. First mounting part; 215. Second mounting part; 22. Support arm

[0043] 3. Driving assembly; 31. Driving piece; 32. Ring-shaped connecting piece; 32a. First chain; 32b. Second chain; 321. Connecting body; 322. First connecting rod; 323. First nut; 324. Second connecting rod; 325. Second nut; 33. First winding piece; 331. First upper sprocket; 332. Second upper sprocket; 34. Second winding piece; 341. First lower sprocket; 342. Second lower sprocket; 343. Sprocket shaft

[0044] 4. Guiding assembly; 41. Guiding shaft; 411. Insertion hole; 42. Guiding part; 421. Mounting seat; 4211. First bearing seat; 42111. Injection channel; 4212. Second bearing seat; 422. First bearing; 4221. First sealing ring; 423. Second bearing; 4231. Second sealing ring; 424. Lubrication cavity; 4241. First cavity; 4242. Second cavity; 425. Connector Specific implementation manner

[0045] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the following further details the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0046] As Figures 1 to 6 shown, a lifting mechanism provided by an embodiment of the present utility model includes a fixed seat 1, a moving part 2, a driving assembly 3 and a guiding assembly 4. The driving assembly 3 is installed on the fixed seat 1, the output end of the driving assembly 3 is connected to the moving part 2, the silo is placed on the moving part 2, and the driving assembly 3 drives the moving part 2 to lift, so as to drive the silo to lift.

[0047] The guiding assembly 4 includes a guiding shaft 41 and a guiding part 42. The guiding part 42 is installed on the moving part 2, the guiding shaft 41 is installed on the fixed seat 1, the guiding part 42 is sleeved on the outer periphery of the guiding shaft 41, the guiding shaft 41 extends in the vertical direction, the driving assembly 3 can drive the moving part 2 to reciprocate in the vertical direction, and the guiding shaft 41 can guide the movement of the guiding part 42 and the moving part 2 to ensure the linear movement of the moving part 2.

[0048] A lubrication cavity 424 is formed between the inner wall surface of the guiding portion 42 and the outer peripheral surface of the guiding shaft 41. A connector 425 is provided on the guiding portion 42, and the connector 425 communicates with the lubrication cavity 424 so that a lubricating medium can be injected into the lubrication cavity 424 through the connector 425.

[0049] In this embodiment, during the reciprocating movement of the moving portion 2 along the guiding shaft 41, the lubricating medium in the lubrication cavity 424 can lubricate the movement of the guiding portion 42, reduce the frictional force between the guiding portion 42 and the guiding shaft 41, reduce the wear of the guiding portion 42 and the guiding shaft 41, and further reduce the situation where the moving portion 2 is stuck due to wear, so that the moving portion 2 can still maintain stable operation when driving the silo to move.

[0050] Preferably, the lubricating medium is lubricating oil. During the reciprocating movement of the moving portion 2, the lubricating oil can form an oil film on the surface of the guiding shaft 41, which can effectively reduce the wear between the guiding portion 42 and the guiding shaft 41.

[0051] In one embodiment, as Figure 3 shown, the lubrication cavity 424 is an annular cavity and is arranged around the outer periphery of the guiding shaft 41, so that an oil film can be uniformly formed on the outer periphery of the guiding shaft 41, further ensuring the lubrication effect between the guiding portion 42 and the guiding shaft 41.

[0052] In one embodiment, as Figure 3 、 Figure 4 shown, the guiding portion 42 includes a mounting seat 421, a first bearing 422 and a second bearing 423. The mounting seat 421 is mounted on the moving portion 2. An accommodation cavity is formed inside the mounting seat 421. The accommodation cavity extends in the vertical direction. The first bearing 422 is arranged in the accommodation cavity and sleeved on the outer periphery of the guiding shaft 41. The second bearing 423 is arranged in the accommodation cavity and sleeved on the outer periphery of the guiding shaft 41. Specifically, the outer ring of the first bearing 422 is tightly fitted in the accommodation cavity, and the inner ring of the first bearing 422 has a clearance fit with the guiding shaft 41. The outer ring of the second bearing 423 is tightly fitted in the accommodation cavity, and the inner ring of the second bearing 423 has a clearance fit with the guiding shaft 41. When the first bearing 422 and the second bearing 423 move up and down along the guiding shaft 41, the movement of the guiding portion 42 relative to the guiding shaft 41 can be realized, and thus the movement of the moving portion 2 in the vertical direction can be realized.

[0053] A lubrication cavity 424 is formed between the inner wall surface of the accommodation cavity and the outer peripheral surface of the guide shaft 41, and is disposed between the first bearing 422 and the second bearing 423 in the axial direction of the guide shaft 41. After the first bearing 422 and the second bearing 423 are installed in the accommodation cavity, they will occupy a part of the space of the accommodation cavity. The unoccupied part of the accommodation cavity between the first bearing 422 and the second bearing 423 and the outer peripheral surface of the guide shaft 41 is the lubrication cavity 424. When the lubrication cavity 424 is filled with a lubricating medium through the joint 425, the lubricating medium in the lubrication cavity 424 can infiltrate into the gap between the first bearing 422 and the guide shaft 41 and into the gap between the second bearing 423 and the guide shaft 41.

[0054] One end of the moving part 2 is connected to the guide shaft 41 through the guiding part 42, and the other end of the moving part 2 is in a suspended state. After the silo is placed on the moving part 2, under the gravity of the silo and the gravity of the moving part 2 itself, the other end of the moving part 2 is pressed down. The inner rings of the first bearing 422 and the second bearing 423 are both in contact with the guide shaft 41. Through the lubrication of the lubricating oil, during the up and down movement of the moving part 2, the friction and wear between the first bearing 422 and the guide shaft 41 can be reduced, and the friction and wear between the second bearing 423 and the guide shaft 41 can be reduced.

[0055] In an embodiment, the first bearing 422 is a self-aligning linear bearing. The first bearing 422 includes an outer ring, a ball retainer and a ball assembly. The ball assembly is connected to the outer ring through the ball retainer. The outer ring is in interference fit with the accommodation cavity. The tangent planes of the multiple balls of the ball assembly form the inner ring of the first bearing 422. The second bearing 423 is a self-aligning linear bearing, and the structure of the second bearing 423 is the same as that of the first bearing 422, which will not be elaborated here.

[0056] Under the gravity of the silo and the gravity of the moving part 2 itself, after the suspended end of the moving part 2 is pressed down, the ball assemblies of the first bearing 422 and the second bearing 423 are attached to the guide shaft 41, and the pressure is evenly applied to the contact surface between the ball assembly in the bearing and the guide shaft 41. The pressure is evenly shared by the first bearing 422 and the second bearing 423, and the force is evenly distributed, thereby increasing the load-bearing capacity of the guiding part 42, and further increasing the load-bearing capacity of the moving part 2. Further, the greater the length of the first bearing 422 in the axial direction of the guide shaft 41 and the length of the second bearing 423 in the axial direction of the guide shaft 41, the greater the load-bearing capacity.

[0057] In an embodiment, as Figure 4As shown, at one end of the first bearing 422 facing away from the second bearing 423, a first sealing ring 4221 is provided. The inner ring of the first sealing ring 4221 abuts against the outer peripheral surface of the guide shaft 41, and the outer ring of the first sealing ring 4221 abuts against the inner wall surface of the accommodation cavity, so as to seal the gap between one end of the first bearing 422 facing away from the second bearing 423 and the guide shaft 41.

[0058] At one end of the second bearing 423 facing away from the first bearing 422, a second sealing ring 4231 is provided. The inner ring of the second sealing ring 4231 abuts against the outer peripheral surface of the guide shaft 41, and the outer ring of the second sealing ring 4231 abuts against the inner wall surface of the accommodation cavity, so as to seal the gap between one end of the second bearing 423 facing away from the first bearing 422 and the guide shaft 41. In this way, in the axial direction of the guide shaft 41, the lubricating oil in the lubricating cavity 424 will not seep out from the gap between the first bearing 422 and the guide shaft 41, nor will it seep out from the gap between the second bearing 423 and the guide shaft 41, ensuring the continuous lubricating effect of the lubricating oil on the guide shaft 41 and the guiding part 42 and guaranteeing the lubrication effect.

[0059] In one embodiment, the first sealing ring 4221 and the second sealing ring 4231 are rubber rings, which have a good sealing effect.

[0060] In one embodiment, at one end of the first bearing 422 close to the second bearing 423, a first steel ring is provided. The first steel ring is in clearance fit with the guide shaft 41, which will not affect the entry of lubricating oil into the first bearing 422, and the first steel ring can fix the ball retainer of the first bearing 422.

[0061] At one end of the second bearing 423 facing away from the first bearing 422, a second steel ring is provided. The second steel ring is in clearance fit with the guide shaft 41, which will not affect the entry of lubricating oil into the second bearing 423, and the second steel ring can fix the ball retainer of the second bearing 423.

[0062] In one embodiment, as Figure 4 shown, the mounting seat 421 includes a first bearing seat 4211 and a second bearing seat 4212. The first bearing seat 4211 and the second bearing seat 4212 are oppositely arranged on the moving part 2 along the axial direction of the guide shaft 41. Among them, the first bearing seat 4211 is fixed on the upper side of the moving part 2, and the second bearing seat 4212 is fixed on the lower side of the moving part 2.

[0063] The accommodation cavity includes a first accommodation cavity and a second accommodation cavity. The first accommodation cavity is formed in the first bearing seat 4211. The first bearing 422 is disposed at one end of the first accommodation cavity away from the second bearing seat 4212, and the outer ring of the first bearing 422 is tightly fitted in the first accommodation cavity. The second accommodation cavity is formed in the second bearing seat 4212. The second bearing 423 is disposed at one end of the second accommodation cavity away from the first bearing seat 4211, and the outer ring of the second bearing 423 is tightly fitted in the second accommodation cavity. The assembly connection between the first bearing 422 and the moving part 2 is realized through the first bearing seat 4211, facilitating the relative sliding between the first bearing 422 and the guide shaft 41. The assembly connection between the second bearing 423 and the moving part 2 is realized through the second bearing seat 4212, facilitating the relative sliding between the second bearing 423 and the guide shaft 41.

[0064] The lubrication cavity 424 includes a first cavity 4241 and a second cavity 4242 that communicate with each other. The first cavity 4241 is formed between the inner wall surface of the first accommodation cavity and the outer peripheral surface of the guide shaft 41. The second cavity 4242 is formed between the inner wall surface of the second accommodation cavity and the outer peripheral surface of the guide shaft 41. The first cavity 4241 is located in the first bearing seat 4211, and the second cavity 4242 is located in the second bearing seat 4212. Through the interconnected first cavity 4241 and second cavity 4242, when lubricating oil is injected through the joint 425, both the first cavity 4241 and the second cavity 4242 can be filled with lubricating oil, thereby lubricating the first bearing 422 and the second bearing 423 and reducing friction.

[0065] In one embodiment, as Figure 4 shown, the first cavity 4241 is annular, and the second cavity 4242 is annular, so that an oil film can be evenly formed on the outer periphery of the guide shaft 41, further ensuring the lubrication effect between the guiding part 42 and the guide shaft 41.

[0066] Preferably, the first bearing seat 4211 and the second bearing seat 4212 have the same structure, and the outer diameter of the first cavity 4241 is the same as the outer diameter of the second cavity 4242.

[0067] In one embodiment, as Figure 4 shown, a through hole 211 is provided on the moving part 2, and the guide shaft 41 is inserted through the through hole 211. The axial two ends of the guide shaft 41 are connected to the fixed seat 1. The guide shaft 41 and the through hole 211 are in clearance fit. During the up and down movement of the moving part 2, the moving part 2 realizes the relative sliding with the guide shaft 41 through the cooperation between the through hole 211 and the guide shaft 41.

[0068] A connection cavity 212 is formed between the inner wall surface of the through hole 211 and the outer peripheral surface of the guide shaft 41. The connection cavity 212 communicates with the first cavity 4241 and the second cavity 4242. In this way, when injecting oil through the joint 425, the first cavity 4241 and the second cavity 4242 can both be injected with lubricating oil through the connection cavity 212. At the same time, the lubricating oil in the connection cavity 212 can reduce the friction and wear between the moving part 2 and the guide shaft 41.

[0069] Among them, the through hole 211 is a circular hole, and the connection cavity 212 is an annular cavity surrounding the guide shaft 41, which can quickly fill the first cavity 4241 and the second cavity 4242 with lubricating oil.

[0070] In an embodiment, as Figure 2 、 Figure 4 shown, the moving part 2 includes a connecting piece 21 and a plurality of support arms 22. The plurality of support arms 22 are arranged at intervals on the connecting piece 21. The plurality of support arms 22 are used to carry the silo. One end of the support arm 22 is connected to the connecting piece 21, and the other end of the support arm 22 is in a cantilever state. The silo is supported by the plurality of support arms 22. The through hole 211 axially penetrates the connecting piece 21 along the guide shaft 41. The first bearing seat 4211 and the second bearing seat 4212 are installed on opposite sides of the connecting piece 21 in the axial direction of the guide shaft 41. The first bearing seat 4211 is fixed on the upper side of the connecting piece 21, and the second bearing seat 4212 is fixed on the lower side of the connecting piece 21. The guide shaft 41 sequentially passes through the first bearing 422 in the first bearing seat 4211, the through hole 211, and the second bearing 423 in the second bearing seat 4212 from top to bottom, thereby realizing the assembly connection between the connecting piece 21 and the guide shaft 41. When the connecting piece 21 moves up and down along the guide shaft 41, it drives the plurality of support arms 22 to lift the silo up and down.

[0071] In an embodiment, an injection channel 42111 is provided on one of the first bearing seat 4211 and the second bearing seat 4212. One end of the injection channel 42111 is connected to the lubrication cavity 424, and the other end of the injection channel 42111 is connected to the joint 425. The injection channel 42111 is connected between the lubrication cavity 424 and the joint 425. After the lubricating oil is injected by the joint 425, it flows into the lubrication cavity 424 through the injection channel 42111 to realize the oil injection of the lubrication cavity 424.

[0072] Among them, the injection channel 42111 and the joint 425 are provided on the first bearing seat 4211, or the injection channel 42111 and the joint 425 are provided on the second bearing seat 4212, both of which can realize the oil injection of the lubrication cavity 424. Preferably, as Figure 4As shown, an injection channel 42111 and a connector 425 are provided on a first bearing block 4211, and the first bearing block 4211 is located above the connecting member 21, facilitating the connection of the connector 425 to components such as pipes.

[0073] In one embodiment, as Figure 2 shown, a plurality of guide shafts 41 are provided, and a plurality of guide portions 42 are provided. Each guide portion 42 is sleeved on a corresponding guide shaft 41. Through the guiding cooperation between the plurality of guide portions 42 and the plurality of guide shafts 41, the stability of the moving portion 2 during the up and down movement is protected, and at the same time, the load-bearing capacity of the moving portion 2 can also be improved.

[0074] A manifold block 213 adapted to be connected to an oil inlet device is provided on the moving portion 2. The manifold block 213 is installed on the connecting member 21. A plurality of interfaces 2131 are provided on the manifold block 213, and the plurality of interfaces 2131 are connected to the connectors 425 of the plurality of guide portions 42 in a one-to-one correspondence. The oil inlet device can be an oil inlet pump. The oil is transported to the manifold block 213 through the oil inlet pump, and the lubricating oil is distributed to the plurality of connectors 425 through the plurality of connectors 425, so as to inject lubricating oil into the lubricating cavities 424 of each guide portion 42, realizing the lubrication between the plurality of guide shafts 41 and the plurality of guide portions 42.

[0075] In one embodiment, as Figure 1 、 Figure 2 shown, the driving assembly 3 includes a driving member 31, an annular connecting member 32, a first winding member 33, and a second winding member 34. The output end of the driving member 31 is connected to the first winding member 33, and the driving member 31 and the second winding member 34 are installed on the fixed seat 1.

[0076] One end of the annular connecting member 32 is connected to one end of the moving portion 2 along the axial direction of the guide shaft 41. The other end of the annular connecting member 32 sequentially bypasses the first winding member 33 and the second winding member 34 and is connected to the other end of the moving portion 2 along the axial direction of the guide shaft 41, so that the annular connecting member 32 forms a closed-loop structure. Driven by the driving member 31, the annular connecting member 32 is guided by the first winding member 33 and the second winding member 34 to move along an annular track, so that the moving portion 2 is driven to move during both the ascending and descending processes through the annular connecting member 32. Compared with the non-closed-loop connecting member 21 that drags the moving portion 2 to rise by the driving member 31 and relies on the self-weight of the moving portion 2 to passively descend during the descent, in this embodiment, the moving portion 2 runs smoothly and can avoid jamming caused by passive descent.

[0077] In one embodiment, the driving member 31 is a motor. The driving member 31 can drive the first winding member 33 to rotate and drive the second winding member 34 to rotate under the transmission of the annular connecting member 32, thereby realizing the annular winding movement of the annular connecting member 32.

[0078] In one embodiment, asFigure 5 , Figure 6 As shown in Figure 6 , the annular connecting member 32 includes a connecting body 321, a first connecting rod 322, and a second connecting rod 324. The first connecting rod 322 and the second connecting rod 324 are connected to both ends of the connecting body 321 in the length direction. On the connecting member 21 of the moving part 2, a first mounting portion 214 and a second mounting portion 215 are provided. The first connecting rod 322 is connected to the first mounting portion 214, and the second connecting rod 324 is connected to the second mounting portion 215. The first connecting rod 322 can be fixed through the first mounting portion 214, and the second connecting rod 324 can be fixed through the second mounting portion 215, so that both ends of the annular connecting member 32 are connected to the connecting member 21 of the moving part 2, realizing the closed-loop design of the annular connecting member 32.

[0079] Among them, the first connecting rod 322 has an external thread, and the first mounting portion 214 is provided with a first hole having an internal thread. The first connecting rod 322 is threadedly connected in the first hole. The second connecting rod 324 has an external thread, and the second mounting portion 215 is provided with a second hole having an internal thread. The second connecting rod 324 is threadedly connected in the second hole.

[0080] When assembling the annular connecting member 32, first connect the first connecting rod 322 to the first mounting portion 214, and connect the second connecting rod 324 to the second mounting portion 215. Then, fixedly connect one end of the connecting body 321 to the first connecting rod 322. One end of the connecting body 321 sequentially bypasses the first deflecting member 33 and the second deflecting member 34 and then is fixedly connected to the second connecting rod 324, thus completing the assembly of the annular connecting member 32 and the moving part 2.

[0081] In one embodiment, as Figure 6 shown, a first nut 323 is provided on the first connecting rod 322, and a second nut 325 is provided on the second connecting rod 324. After the first connecting rod 322 is threadedly connected to the first mounting portion 214, tighten the first nut 323 to lock the first connecting rod 322, further ensuring the connection stability of the first connecting rod 322. After the second connecting rod 324 is threadedly connected to the second mounting portion 215, tighten the second nut 325, which can lock the second connecting rod 324 and further ensure the connection stability of the second connecting rod 324.

[0082] In one embodiment, as Figure 2 shown, the first deflecting member 33 includes a first upper sprocket 331 and a second upper sprocket 332. The first upper sprocket 331 and the second upper sprocket 332 are connected to the output end of the driving member 31, and the driving member 31 can drive the first upper sprocket 331 and the second upper sprocket 332 to rotate synchronously. Preferably, the driving member 31 is a double-shaft motor, and the first upper sprocket 331 and the second upper sprocket 332 are respectively connected to the two output shafts of the double-shaft motor.

[0083] The second winding member 34 includes a first lower sprocket 341, a second lower sprocket 342 and a sprocket shaft 343, and the sprocket shaft 343 is connected between the first lower sprocket 341 and the second lower sprocket 342. The annular connecting member 32 is a chain, and two of them are provided, namely a first chain 32a and a second chain 32b, and the two ends of the first chain 32a in the length direction are connected to the moving part 2 through the first connecting rod 322 and the second connecting rod 324 respectively, and the two ends of the second chain 32b in the length direction are connected to the moving part 2 through the first connecting rod 322 and the second connecting rod 324 respectively.

[0084] The first chain 32a is wound around the first upper sprocket 331 and the first lower sprocket 341, and the first chain 32a is an annular chain, and the first upper sprocket 331 and the first lower sprocket 341 are both meshed with the first chain 32a, and the second chain 32b is wound around the second upper sprocket 332 and the second lower sprocket 342, and the second chain 32b is an annular chain, and the second upper sprocket 332 and the second lower sprocket 342 are both meshed with the second chain 32b. When the driving member 31 drives the first upper sprocket 331 and the second upper sprocket 332 to rotate, the first chain 32a can be driven around the first upper sprocket 331 and the first lower sprocket 341, and the second chain 32b can be driven around the second upper sprocket 332 and the second lower sprocket 342, so that the first chain 32a and the second chain 32b synchronously drive the moving part 2 to move up and down.

[0085] In an alternative embodiment, the annular connecting member 32 is a synchronous belt, the first winding member 33 and the second winding member 34 are synchronous wheels, and the synchronous belt is connected to the movable part 2 via a conventional synchronous belt pressure plate. Driven by the driving member 31, the synchronous belt can drive the movable part 2 to move up and down.

[0086] In one embodiment, if Figure 2 As shown, a socket 411 is provided on the guide shaft 41, and the socket 411 is used to insert a lever to drive the guide shaft 41 to rotate around its axis by turning the lever. After the guide shaft 41 is worn, the worn part of the guide shaft 41 can be avoided by rotating the guide shaft 41, so that the guide shaft 41 can continue to be used for a period of time, reducing the replacement frequency of the guide shaft 41.

[0087] Among them, with the connecting member 21 of the moving part 2 as the front end and the end of the support arm 22 far from the connecting member 21 as the rear end, under the action of the self-weight of the moving part 2 and the gravity of the magazine, the rear end of the moving part 2 is pressed down, and the moving part 2 tilts towards the rear end. The first bearing 422 is located above the second bearing 423. Therefore, after long-term use, the wear between the first bearing 422 and the rear end of the guide shaft 41 is relatively serious, and the wear between the second bearing 423 and the front end of the guide shaft 41 is relatively serious. At this time, take a lever, insert the lever into the jack 411 of the guide shaft 41, and drive the guide shaft 41 to rotate by itself through the lever, which can move the worn part of the guide shaft 41 away, avoid jamming the movement of the guiding part 42 along the guide shaft 41. After the smooth part of the guide shaft 41 is rotated to the rear end and the front end, it can continue to be used, does not affect the normal use of the lifting mechanism, and can extend the service life of the guide rod.

[0088] On the other hand, the embodiment of the present invention provides a loading and unloading device, including a magazine and the lifting mechanism of the above embodiment. The magazine is used to load the material plates, the magazine is placed on the moving part 2, and the driving assembly 3 can drive the moving part 2 to move up and down, so as to drive the magazine to move up and down.

[0089] On yet another aspect, the embodiment of the present invention provides a PCB processing device, including a machine table, a processing main body, a manipulator, and the loading and unloading device of the above embodiment. The processing main body is arranged on the machine table, the manipulator is arranged on the loading and unloading device. By driving the magazine to lift and lower through the moving part 2, it is convenient for the magazine to be docked with the manipulator. The manipulator is used for transporting the material plates between the magazine and the machine table, and the processing main body is used for processing the material plates.

[0090] Among them, the PCB processing device is a drilling machine, a routing machine, or a drill-routing integrated machine.

[0091] In one embodiment, the PCB processing device is a laser drilling machine, which can perform laser drilling on the material plates.

[0092] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lifting mechanism, characterized in that, It includes a fixed seat, a moving part, a driving assembly and a guide assembly; the driving assembly is installed on the fixed seat, and the output end of the driving assembly is connected to the moving part; The guide assembly comprises a guide shaft and a guide part, wherein the guide part is mounted on the moving part, the guide shaft is mounted on the fixed seat, the guide part is sleeved on the outer circumference of the guide shaft, and the driving assembly can drive the moving part to reciprocate in the vertical direction; A lubrication cavity is formed between the inner wall surface of the guide portion and the outer peripheral surface of the guide shaft. The guide portion is provided with a joint, which is communicated with the lubrication cavity so that a lubrication medium can be injected into the lubrication cavity through the joint.

2. The lifting mechanism according to claim 1, wherein The guide portion comprises a mounting seat, a first bearing and a second bearing, the mounting seat is mounted on the moving portion, an accommodating cavity is formed inside the mounting seat, the first bearing is arranged in the accommodating cavity and sleeved on the outer circumference of the guide shaft, and the second bearing is arranged in the accommodating cavity and sleeved on the outer circumference of the guide shaft; The lubrication cavity is formed between the inner wall surface of the accommodating cavity and the outer peripheral surface of the guide shaft and is located between the first bearing and the second bearing in the axial direction of the guide shaft.

3. The lifting mechanism according to claim 2, characterized in that, A first sealing ring is provided at one end of the first bearing away from the second bearing, the inner ring of the first sealing ring abuts against the outer peripheral surface of the guide shaft, and the outer ring of the first sealing ring abuts against the inner wall surface of the accommodating cavity to seal the gap between the end of the first bearing away from the second bearing and the guide shaft; A second sealing ring is provided at the end of the second bearing away from the first bearing, the inner ring of the second sealing ring abuts against the outer circumferential surface of the guide shaft, and the outer ring of the second sealing ring abuts against the inner wall surface of the accommodating cavity to seal the gap between the end of the second bearing away from the first bearing and the guide shaft.

4. The lifting mechanism according to claim 2, wherein, The mounting seat comprises a first bearing seat and a second bearing seat, wherein the first bearing seat and the second bearing seat are arranged opposite to each other on the moving part along the axial direction of the guide shaft; The accommodating cavity comprises a first accommodating cavity and a second accommodating cavity, the first accommodating cavity is formed in the first bearing seat, the first bearing is arranged at one end of the first accommodating cavity away from the second bearing seat, the second accommodating cavity is formed in the second bearing seat, and the second bearing is arranged at one end of the second accommodating cavity away from the first bearing seat; The lubrication cavity includes a first cavity and a second cavity which are interconnected. The first cavity is formed between the inner wall surface of the first accommodating cavity and the outer peripheral surface of the guide shaft. The second cavity is formed between the inner wall surface of the second accommodating cavity and the outer peripheral surface of the guide shaft.

5. The lifting mechanism according to claim 4, wherein The movable part is provided with a through hole, the guide shaft is inserted into the through hole, the axial ends of the guide shaft are connected to the fixed seat, and a connecting cavity is formed between the inner wall surface of the through hole and the outer peripheral surface of the guide shaft; The connecting cavity communicates with the first cavity and the second cavity.

6. The lifting mechanism according to claim 5, characterized in that, The moving part includes a connecting member and a plurality of supporting arms, wherein the plurality of supporting arms are arranged at intervals on the connecting member, and the plurality of supporting arms are used to carry the silo; The through hole penetrates the connecting member along the axial direction of the guide shaft, and the first bearing seat and the second bearing seat are installed on opposite sides of the connecting member in the axial direction of the guide shaft.

7. The lifting mechanism according to claim 4, wherein An injection channel is provided on one of the first bearing seat and the second bearing seat, one end of the injection channel is connected to the lubrication cavity, and the other end of the injection channel is connected to the joint.

8. The lifting mechanism according to claim 1, wherein There are a plurality of guide shafts, a plurality of guide parts, and each guide part is sleeved on the corresponding guide shaft; The movable part is provided with an oil separator block which is suitable for connecting with the oil inlet device. The oil separator block is provided with a plurality of interfaces, and the plurality of interfaces are connected with the joints of the plurality of guide parts in a one-to-one correspondence.

9. The lifting mechanism according to any one of claims 1-8, characterized in that, The driving assembly comprises a driving member, an annular connecting member, a first winding member and a second winding member, the output end of the driving member is connected to the first winding member, and the driving member and the second winding member are installed on the fixing seat; One end of the annular connector is connected to one end of the movable portion along the axial direction of the guide shaft, and the other end of the annular connector sequentially bypasses the first winding member and the second winding member and is connected to the other end of the movable portion along the axial direction of the guide shaft.

10. The lifting mechanism according to claim 9, characterized in that, The annular connecting member comprises a connecting body, a first connecting rod and a second connecting rod, wherein the first connecting rod and the second connecting rod are connected to both ends of the connecting body in the length direction; The moving part is provided with a first mounting part and a second mounting part, the first connecting rod is connected to the first mounting part, and the second connecting rod is connected to the second mounting part; The first winding member includes a first upper sprocket and a second upper sprocket, and the first upper sprocket and the second upper sprocket are connected to the output end of the driving member; The second winding member comprises a first lower sprocket, a second lower sprocket and a sprocket shaft, wherein the sprocket shaft is connected between the first lower sprocket and the second lower sprocket; The annular connecting members are provided with two, namely a first chain and a second chain, the first chain is wound around the first upper sprocket and the first lower sprocket, and the second chain is wound around the second upper sprocket and the second lower sprocket; The guide shaft is provided with an insertion hole, and the insertion hole is used to insert a lever, so that the guide shaft is driven to rotate around its axis by moving the lever.

11. A loading and unloading device, characterized in that, It comprises a material bin and the lifting mechanism according to any one of claims 1 to 10, wherein the material bin is used for loading material plates, and the material bin is placed on the moving part.

12. A PCB processing device, characterized in that, It includes a machine platform, a processing body, a robot and the loading and unloading device according to claim 11, the processing body is arranged on the machine platform, the robot is arranged on the loading and unloading device, the robot is used for transferring the material plate between the material bin and the machine platform, and the processing body is used for processing the material plate.

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