Minimum quantity lubrication injection mechanism grinding system

Abstract

The present invention discloses a micro-lubrication injection mechanism grinding system, belonging to the technical field of micro-lubrication. It includes a valve seat transmission device, a valve core transmission device and a grinding device. The valve seat transmission device and the valve core transmission device are arranged in parallel on opposite sides relative to the grinding device. The valve seat and the valve core are respectively conveyed to the grinding device by the valve seat transmission device and the valve core transmission device, and then the grinding device grinds the valve seat and the valve core. The valve seat transmission device consists of a valve seat vibrating feeder, a valve seat placement mechanism and a valve seat tray conveyor belt. The valve core transmission device consists of a valve core vibrating feeder, a valve core placement mechanism and a valve core tray conveyor belt. The grinding device consists of a valve core loading and unloading mechanism, a grinding pressure applying mechanism, a grinding transmission mechanism and a valve seat loading and unloading mechanism. The present invention realizes the batch grinding processing requirements of the valve seat and the valve core in the injection mechanism assembly, and helps to improve the efficiency and quality of the fully automated grinding of the injection mechanism assembly.

Description

Technical Field

[0001] The present invention belongs to the technical field of minimum quantity lubrication, and provides a grinding system for a minimum quantity lubrication injection mechanism. Background Art

[0002] Minimum quantity lubrication, also known as minimal quantity lubrication, abbreviated as MQL in English, is a lubrication method for metal processing, that is, semi-dry cutting. It refers to a cutting method in which compressed gas (air, nitrogen, carbon dioxide, etc.) is mixed and vaporized with an extremely small amount of lubricating oil to form micron-sized droplets, which are then sprayed into the processing area for effective lubrication.

[0003] A spraying mechanism is commonly used in the formation of micron-sized droplets in minimum quantity lubrication. The spraying mechanism conveys fluid in milliliters per hour. For example, in the well-known patent document CN217371588U - A Rear-adjustable Minimum Quantity Lubrication Spraying Mechanism, a relatively precise (Ra0.005) contact surface is required between the valve core and the valve seat. As Figure 1 shown, if the matching surface finish of the contact surface is insufficient, it will cause uneven fluid passage and large fluctuations in atomization size. Therefore, it is necessary to grind the mating surface between the valve seat and the valve core. However, the existing grinding methods usually adopt manual grinding, which has low efficiency. Moreover, as components of the spraying mechanism, the valve core and the valve seat are mass-produced during the factory grinding process. Therefore, the current production process can no longer meet the requirements of automated assembly line operations. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a grinding system for a minimum quantity lubrication injection mechanism to meet the requirements of mass production grinding of the components of the injection mechanism in an assembly line manner.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] The present invention provides a micro-lubrication injection mechanism grinding system, which includes a valve seat transmission device, a spool transmission device and a grinding device. The valve seat transmission device and the spool transmission device are arranged in parallel on opposite sides relative to the grinding device. The valve seat transmission device and the spool transmission device respectively convey the valve seat and the spool to the grinding device, and then the grinding device grinds the valve seat and the spool. The valve seat transmission device consists of a valve seat vibrating feeder, a valve seat placing mechanism and a valve seat tray conveyor belt. The valve seat vibrating feeder is used for screening and sorting the valve seats. The valve seat placing mechanism is used to place the valve seats coming out of the valve seat vibrating feeder on the valve seat trays. The valve seat tray conveyor belt is used for transporting the valve seat trays. The spool transmission device consists of a spool vibrating feeder, a spool placing mechanism and a spool tray conveyor belt. The spool vibrating feeder is used for screening and sorting the spools. The spool placing mechanism is used to place the spools coming out of the spool vibrating feeder on the spool trays. The spool tray conveyor belt is used for transporting the spool trays. Both the valve seat tray conveyor belt and the spool tray conveyor belt are composed of a straight conveying section and an arc conveying section, and are in a U shape or a ring shape. The grinding device consists of a spool loading and unloading mechanism, a grinding pressure applying mechanism, a grinding driving mechanism and a valve seat loading and unloading mechanism. The spool loading and unloading mechanism is used for loading and unloading the spool between the spool transmission device and the grinding driving mechanism. The valve seat loading and unloading mechanism is used for loading and unloading the valve seat between the valve seat transmission device and the grinding driving mechanism. The grinding driving mechanism is used for grinding between the contact surfaces of the spool and the valve seat. The grinding pressure applying mechanism is used for applying grinding pressure to the spool. The spool loading and unloading mechanism and the valve seat loading and unloading mechanism respectively perform side movement actions on opposite sides of the grinding driving mechanism. The grinding pressure applying mechanism performs a lifting action above the grinding driving mechanism. The grinding device further includes a cantilever auxiliary table arranged on the platform frame and used for supporting the valve seat loading and unloading mechanism. A long hole groove is opened on the cantilever auxiliary table, which is matched with the valve seat loading and unloading mechanism and is adapted to the valve seat tray. The grinding device further includes a grinding agent adding mechanism arranged on the cantilever auxiliary table and above the long hole groove. The grinding agent adding mechanism consists of a second needle-type cylinder, a mounting seat, a nozzle and a mounting frame. The mounting frame is arranged on the cantilever auxiliary table and also serves as a positioning mechanism for the valve seat loading and unloading mechanism. The second needle-type cylinder acts on the nozzle, and both are arranged on the mounting frame through the mounting seat. The number of nozzles is equivalent to the number of valve seats loaded and unloaded by the valve seat loading and unloading mechanism.

[0007] Optionally, both the valve seat placing mechanism and the spool placing mechanism consist of a rotary cylinder and a finger cylinder. The rotary cylinder is used for rotating the finger cylinder, and the finger cylinder is used for clamping and placing the valve seat or the spool.

[0008] Optionally, the valve seat transfer device further includes a valve seat tray handling mechanism disposed between two parallel conveying straight sections of the valve seat tray conveyor belt and close to the side of the valve seat placement mechanism. The valve core transfer device further includes a valve core tray handling mechanism disposed between two parallel conveying straight sections of the valve core tray conveyor belt and close to the side of the valve core placement mechanism. Both the valve seat tray handling mechanism and the valve core tray handling mechanism are composed of a lifting cylinder, a rotary cylinder, and a jaw cylinder. The rotary cylinder is disposed on the lifting cylinder through a bottom plate, and the jaw cylinder is disposed on the rotary cylinder through a bracket. The jaw cylinder is used for clamping and placing the valve seat tray or the valve core tray.

[0009] Optionally, the valve seat transfer device further includes a valve seat tray lifting mechanism for conveying the valve seat to the grinding device. The valve seat tray lifting mechanism is composed of a valve seat tray transfer belt, a rodless cylinder, and a column. The rodless cylinder acting on the valve seat tray rotating belt is disposed on the column; there are two rodless cylinders, and fixed blocks connected to the two rodless cylinders are respectively disposed on both sides of the valve seat tray transfer belt; the valve core transfer device further includes a valve core tray transfer mechanism for conveying the valve core to the grinding device, and the valve core tray transfer mechanism has the same structure as the valve core tray handling mechanism.

[0010] Optionally, the valve core loading and unloading mechanism is composed of two horizontal rodless cylinders, two vertical rodless cylinders, a crossbar, and finger cylinders. The two horizontal rodless cylinders are respectively disposed on both sides of the grinding transmission mechanism. Each of the two horizontal rodless cylinders is provided with a vertical rodless cylinder. A crossbar is disposed between the two vertical rodless cylinders. The crossbar is located above the grinding transmission mechanism. A plurality of finger cylinders are disposed on the corresponding surface of the crossbar facing the grinding transmission mechanism for clamping and placing a plurality of valve cores arranged at intervals in a single row.

[0011] Optionally, the valve seat loading and unloading mechanism is composed of a fixed seat, a third needle-type cylinder, a moving block, a fourth needle-type cylinder, a connecting rod, a clamping rod, and a power linear guide rail. The power linear guide rail adopts a double-track structure and is fixed on the grinding transmission mechanism. A fixed seat is respectively disposed on the two power linear guide rails. The moving block with vertical lifting is connected to the single fixed seat through the third needle-type cylinder. A pair of fourth needle-type cylinders with relative movement are disposed on the single moving block. A connecting rod is disposed on each of the fourth needle-type cylinders. A clamping rod is disposed between the connecting rods disposed on the two fourth needle-type cylinders on the same side of the two moving blocks. Another clamping rod is disposed between the connecting rods disposed on the two fourth needle-type cylinders on the other same side of the two moving blocks. The two clamping rods are used for clamping and placing a plurality of valve seats arranged at intervals in a single row.

[0012] Optionally, the grinding drive mechanism consists of a platform frame, a valve seat fixing plate, a valve core fixing plate, a driven gear shaft, an intermediate gear, a driving gear, a motor, and a lifting cylinder. The platform frame is provided with a valve seat fixing plate, a motor, and a lifting cylinder. The valve core fixing plate is arranged above the valve seat fixing plate. The valve seat fixing plate is provided with a plurality of grooves arranged in a matrix for placing valve seats. The valve core fixing plate is provided with a plurality of driven gear shafts arranged in a matrix for placing valve cores, and the plurality of driven gear shafts and the plurality of grooves are in a one-to-one up-and-down structure and mesh and drive each other on the same horizontal plane. The valve core fixing plate is provided with an intermediate gear that meshes and drives with one driven gear shaft. The output shaft of the motor is provided with a driving gear, and the intermediate gear also meshes and drives with the driving gear. The driven gear shaft rotates on the valve core fixing plate through a bearing. The lifting cylinder is connected to the valve core fixing plate through a connecting member, and the lifting cylinder acts on the valve core fixing plate and is used to lift the valve core fixing plate above the valve seat fixing plate. A guide rod is provided between the valve seat fixing plate and the valve core fixing plate.

[0013] Optionally, a positioning sleeve for radially clamping the square head of the valve core is arranged at the axial center of the driven gear shaft. The valve core fixing plate is provided with through holes corresponding to the valve seats arranged on the plurality of grooves on the corresponding surface facing the valve seat fixing plate, and the through holes and the corresponding positioning sleeves are on the same central axis. An inner shoulder hole platform for axially abutting against the valve core step is arranged at the top of the through hole.

[0014] Optionally, the grinding pressing mechanism consists of a portal frame, a displacement cylinder, a pressing plate, and a first needle cylinder. The portal frame is provided with a displacement cylinder. The displacement cylinder is connected with a pressing plate. The pressing plate is located above the grinding drive mechanism. A plurality of first needle cylinders for loading grinding pressure on the valve cores in a one-to-one correspondence and arranged in a matrix are arranged on the corresponding surface of the pressing plate facing the grinding drive mechanism, and wear-resistant nylon blocks are arranged at the heads of the first needle cylinders.

[0015] Optionally, the grinding device further includes a transition storage table that cooperates with the valve core loading and unloading mechanism and is used for temporarily storing the valve core trays.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The micro-lubrication injection mechanism grinding system mentioned in the present invention realizes the automatic processes of screening, sorting, feeding, transporting, loading and unloading, and grinding of the valve seats and valve cores in the injection mechanism components, enabling the pipeline transportation and batch grinding of the injection valve components to meet the requirements of automatic grinding processing, and helping to improve the efficiency and quality of the full-automatic grinding of the injection mechanism components.

[0018] 2. The micro-lubrication injection mechanism grinding system mentioned in the present invention can program each cylinder and the motor so that the injection mechanism components can be automatically controlled according to program instructions during the transportation and grinding processes, reducing the labor cost and time cost.

[0019] Other advantages, objects and features of the present invention will, to some extent, be set forth in the following description, and to some extent, will be obvious to those skilled in the art based on an investigation of the following text, or can be taught from the practice of the present invention. The objects and other advantages of the present invention can be achieved and obtained through the following description. Brief Description of the Drawings

[0020] In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings, where:

[0021] Figure 1 Schematic structural diagram of the injection mechanism assembly in the prior art;

[0022] Figure 2 Front perspective schematic diagram of the micro-lubrication injection mechanism grinding system of the present invention;

[0023] Figure 3 For Figure 2 Bottom perspective schematic diagram;

[0024] Figure 4 For Figure 2 Top plan schematic diagram;

[0025] Figure 5 For Figure 2 Front perspective schematic diagram of the valve seat transmission device in

[0026] Figure 6 For Figure 5 Schematic structural diagram of the valve seat placement mechanism in

[0027] Figure 7 For Figure 5 Schematic structural diagram of the valve seat tray handling mechanism in

[0028] Figure 8 For Figure 5 Schematic structural diagram of the valve seat tray lifting mechanism in

[0029] Figure 9 For Figure 2 Front perspective schematic diagram of the valve core transmission device in

[0030] Figure 10 For Figure 2 Front perspective schematic diagram of the grinding device in

[0031] Figure 11 For Figure 10 Bottom perspective schematic diagram;

[0032] Figure 12 For Figure 10Schematic top view;

[0033] Figure 13 is Figure 10 Schematic structure diagram of the valve core loading and unloading mechanism in;

[0034] Figure 14 is Figure 10 Schematic structure diagram of the grinding pressure mechanism in;

[0035] Figure 15 is Figure 10 Schematic structure diagram of the grinding transmission mechanism in;

[0036] Figure 16 is Figure 15 Front view schematic;

[0037] Figure 17 is Figure 16 A - A sectional view schematic in;

[0038] Figure 18 is Figure 17 Enlarged schematic of part B in;

[0039] Figure 19 is Figure 10 Schematic structure diagram of the abrasive adding mechanism in;

[0040] Figure 20 is Figure 10 Schematic structure diagram of the valve seat loading and unloading mechanism in;

[0041] Reference numerals:

[0042] 1 - Valve seat transfer device;

[0043] 11 - Valve seat vibrating feeder, 12 - Valve seat placing mechanism, 13 - Valve seat tray handling mechanism, 14 - Valve seat tray conveyor belt, 15 - Valve seat tray lifting mechanism, 16 - Valve seat tray;

[0044] 121 - Rotary cylinder, 122 - Finger cylinder;

[0045] 131 - Lifting cylinder, 132 - Base plate, 133 - Rotary cylinder, 134 - Bracket, 135 - Jaw cylinder;

[0046] 141 - Conveyor straight section, 142 - Conveyor arc section;

[0047] 151 - Transfer belt, 152 - Rodless cylinder;

[0048] 2 - Valve core transfer device;

[0049] 21 - Spool vibratory feeder, 22 - Spool placement mechanism, 23 - Spool tray handling mechanism, 24 - Spool tray conveyor belt, 25 - Spool tray transfer mechanism, 26 - Spool tray;

[0050] 3 - Grinding device;

[0051] 31 - Spool loading and unloading mechanism, 32 - Grinding pressure application mechanism, 33 - Intermediate storage table, 34 - Grinding drive mechanism, 35 - Grinding agent addition mechanism, 36 - Valve seat loading and unloading mechanism, 37 - Cantilever auxiliary table, 38 - Spool, 39 - Valve seat;

[0052] 311 - Horizontal rodless cylinder, 312 - Vertical rodless cylinder, 313 - Crossbar, 314 - Finger cylinder;

[0053] 321 - Gantry frame, 322 - Displacement cylinder, 323 - Pressing plate, 324 - First needle cylinder, 325 - Wear-resistant nylon block;

[0054] 3401 - Platform frame, 3402 - Valve seat fixing plate, 3403 - Spool fixing plate, 3404 - Guide rod, 3405 - Driven gear shaft, 3406 - Intermediate gear, 3407 - Driving gear, 3408 - Motor, 3409 - Guide rail groove, 3410 - Lifting cylinder, 3411 - Connecting piece, 3412 - Bearing, 3413 - Positioning sleeve, 3414 - Inner shoulder hole table, 3415 - Through hole, 3416 - Groove;

[0055] 351 - Second needle cylinder, 352 - Mounting seat, 353 - Nozzle, 354 - Mounting frame;

[0056] 361 - Fixed seat, 362 - Third needle cylinder, 363 - Moving block, 364 - Fourth needle cylinder, 365 - Connecting rod, 366 - Clamping rod, 367 - Power linear guide;

[0057] 371 - Long hole groove. Detailed implementation manners

[0058] The present invention will be further described below in conjunction with the detailed implementation manners. Among them, the attached drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present invention, some components in the attached drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted.

[0059] Please refer to Figures 2 - 20, A micro-lubrication injection mechanism grinding system of the present invention includes a valve seat transmission device 1, a valve core transmission device 2, and a grinding device 3. The valve seat transmission device 1 and the valve core transmission device 2 are arranged in parallel on opposite sides with respect to the grinding device 3, and their respective vibrating feeders are biased towards the same side with respect to the grinding device 3. The valve seat transmission device 1 is used to convey the component valve seat 39 of the injection valve to be ground to the grinding device 3, and the valve core transmission device 2 is used to convey the component valve core 38 of the injection valve to be ground that matches the valve seat 39 to the grinding device 3. That is, the valve seat 39 and the valve core 38 components of the injection mechanism to be ground are respectively conveyed to the grinding device 3 by the valve seat transmission device 1 and the valve core transmission device 2, and then the grinding device 3 grinds the valve seat 39 and the valve core 38. With the above solution, this grinding system can realize the automation processes of screening, sorting, feeding, transporting, loading and unloading, and grinding of the valve seat and the valve core in the injection mechanism components, so that the pipeline conveying and batch grinding of the injection valve components can meet the requirements of automated grinding processing, which helps to improve the efficiency and quality of the fully automated grinding of the injection mechanism components.

[0060] Specifically, the valve seat transmission device 1 in this example consists of a valve seat vibrating feeder 11, a valve seat placement mechanism 12, a valve seat tray handling mechanism 13, a valve seat tray conveyor belt 14, and a valve seat tray lifting mechanism 15. The valve seat vibrating feeder 11 is used to screen and sort valve seats. The valve seat placement mechanism 12 is connected after the valve seat vibrating feeder 11 and is used to place the valve seats output by the valve seat vibrating feeder 11 on the valve seat tray 16. The valve seat placement mechanism 12 consists of a rotary cylinder 121 and a finger cylinder 122. The rotary cylinder 121 is installed and fixed through a frame and is used to rotate the finger cylinder 122 by 180°. The finger cylinder 122 is used to clamp and place the valve seat 39. The valve seat tray conveyor belt 14 is located on one side of the valve seat placement mechanism 12 and is used to convey the valve seat tray 16. The valve seat tray conveyor belt 14 is composed of two parallel conveying straight sections 141 and a conveying arc section 142, forming a U shape. The valve seat tray handling mechanism 13 is arranged between the two parallel conveying straight sections 141 of the valve seat tray conveyor belt 14 and close to the side of the valve seat placement mechanism 12, and is used to quickly carry out transposition handling on the empty valve seat tray 16 on the valve seat tray conveyor belt 14. The valve seat tray handling mechanism 13 consists of a lifting cylinder 131, a slewing cylinder 133, and a jaw cylinder 135. The lifting cylinder 131 is installed and fixed through a frame and is used for vertical lifting. The slewing cylinder 133 is installed on the lifting cylinder 131 through a bottom plate 132 and is used for horizontal rotation. The jaw cylinder 135 is installed on the slewing cylinder 133 through a bracket 134 and is used for clamping and placing the valve seat tray 16, that is, the empty valve seat tray placed on the far-side conveying straight section of the valve seat tray conveyor belt 14 away from the valve seat placement mechanism 12 is quickly carried to the near-side conveying straight section close to the valve seat placement mechanism 12 through the vertical lifting of the lifting cylinder 131, the horizontal rotation of the slewing cylinder 133, and the clamping and placing operation of the jaw cylinder 135, so as to realize the transposition handling of the empty valve seat tray on the valve seat tray conveyor belt and locate it at the station of the valve seat placement mechanism 12 to realize the placement of new valve seats 39. The valve seat tray lifting mechanism 15 is used to convey the valve seat 39 to the grinding device 3. The valve seat tray lifting mechanism 15 consists of a valve seat tray transfer belt 151 and a rodless cylinder 152. The rodless cylinder 152 is installed and fixed through a frame and is used to lift the valve seat tray transfer belt 151. A double-acting cylinder can be used and is arranged on both sides of the valve seat tray transfer belt to improve the lifting stability of the valve seat tray transfer belt. The valve seat tray transfer belt 151 is used to carry the valve seat tray 16, and multiple valve seats are installed in the valve seat tray 16 to convey the valve seats to be ground to the grinding device 3.That is, the valve seat tray lifting mechanism 15 vertically lifts the valve seat tray conveyor belt through the rod cylinder 152 to lift the valve seat tray 16 loaded with the valve seat to the grinding device 3. After the grinding device 3 grabs the valve seat, subsequent grinding processes are carried out. The empty valve seat tray can be lowered by the valve seat tray lifting mechanism 15 to the same height as the valve seat tray conveyor belt 14, and the empty valve seat tray is transported by the valve seat tray transfer belt 151 to the valve seat tray conveyor belt 14 to enter the next valve seat loading and transfer process. In addition, the valve seat tray transfer mechanism 15 can also transfer the valve seat 39 after grinding by the grinding device 3 to the valve seat tray conveyor belt 14 and then offline.

[0061] The spool transfer device 2 in this embodiment is composed of a spool vibrating feeder 21, a spool placement mechanism 22, a spool tray handling mechanism 23, a spool tray conveyor belt 24, and a spool tray transfer mechanism 25. Among them, the spool vibrating feeder 21 is used to screen and sort the spools. The spool placement mechanism 22 is used to place the spools output by the spool vibrating feeder 21 on the spool tray 26. The spool tray conveyor belt 24 is used to transport the spool tray 26. The spool tray handling mechanism 23 is arranged between two parallel conveying straight sections 141 of the spool tray conveyor belt 24 and close to the spool placement mechanism side. The spool tray transfer mechanism 25 is used to convey the spools to the grinding device 3. The spool vibrating feeder 21 has the same structure and similar effects as the valve seat vibrating feeder 11. The spool placement mechanism 22 has the same structure and similar effects as the valve seat placement mechanism 12. The spool tray conveyor belt 24 has the same structure and similar effects as the valve seat tray conveyor belt 14. The spool tray handling mechanism 23 and the spool tray transfer mechanism 25 both have the same structure and similar effects as the valve seat tray handling mechanism 13, only the objects they target are different, that is, they target the valve seat and the spool respectively, so they will not be elaborated one by one.

[0062] In another embodiment, the valve seat tray conveyor belt 14 or the spool tray conveyor belt 24 can be formed into a ring shape by two parallel conveying straight sections 141 and two conveying arc sections 142 to realize the circular movement of the valve seat tray 16 or the spool tray 26 on the valve seat tray conveyor belt 14 and the spool tray conveyor belt 24 respectively, so that the valve seat tray handling mechanism 13 or the spool tray handling mechanism 23 does not need to be provided.

[0063] In another embodiment, the valve seat tray lifting mechanism 15 can also be replaced by another valve seat tray handling mechanism 13, and the purpose of conveying the valve seat 39 to the grinding device 3 can also be achieved.

[0064] In this embodiment, the grinding device 3 mainly consists of a valve core loading and unloading mechanism 31, a grinding pressure applying mechanism 32, a grinding transmission mechanism 34, and a valve seat loading and unloading mechanism 36. The valve core loading and unloading mechanism 31 is used to load and unload the valve core 38 conveyed by the valve core transmission device 2 onto and from the grinding transmission mechanism 34. The valve seat loading and unloading mechanism 36 is used to load and unload the valve seat 39 conveyed by the valve seat transmission device 1 onto and from the grinding transmission mechanism 34. The valve seat transmission device 1 and the valve core transmission device 2 mainly use their respective conveyor belts and the trays thereon to achieve the purpose of conveying the valve seat and the valve core to the grinding device 3 in a pipeline manner respectively; while the grinding transmission mechanism 34 is used to grind between the contact surfaces (such as Figure 1 as shown) of the valve core 38 and the valve seat 39 of the injection mechanism assembly, and the grinding pressure applying mechanism 32 is used to apply grinding pressure to the valve core 38 to ensure the grinding operation between the valve core 38 and the valve seat 39; and the valve core loading and unloading mechanism 31 and the valve seat loading and unloading mechanism 36 respectively perform lateral movement actions on the relative two sides of the grinding transmission mechanism 34, while the grinding pressure applying mechanism 32 performs a lifting action above the grinding transmission mechanism 34. This grinding device can meet the batch grinding processing requirements of the contact surfaces between the valve seat and the valve core in the injection mechanism assembly.

[0065] The valve core loading and unloading mechanism 31 in this embodiment consists of a horizontal rodless cylinder 311, a vertical rodless cylinder 312, a crossbar 313, and a finger cylinder 314. The horizontal rodless cylinder 311 is used for horizontal movement, and there are two of them, which are respectively located on both sides of the grinding transmission mechanism 34. And a vertical rodless cylinder 312 is installed on each of the two horizontal rodless cylinders 311. The vertical rodless cylinder 312 is used for vertical movement. A crossbar 313 is arranged between the two vertical rodless cylinders 312, and the crossbar 313 is located above the grinding transmission mechanism 34. A plurality of finger cylinders 314 are arranged on the corresponding surface of the crossbar 313 facing the grinding transmission mechanism 34 for clamping a plurality of valve cores 38 arranged at intervals in a single row on the valve core tray, and the valve core tray and the valve cores 38 arranged thereon are conveyed by the valve core transmission device 2.

[0066] The grinding pressure applying mechanism 32 in this embodiment consists of a gantry frame 321, a displacement cylinder 322, a pressure plate 323, and a first needle cylinder 324. A displacement cylinder 322 is arranged on the gantry frame. A pressure plate 323 is connected to the displacement cylinder 322. The pressure plate 323 is located above the grinding transmission mechanism 34. And a plurality of first needle cylinders 324 for applying grinding pressure to the valve cores 38 in one-to-one correspondence and arranged in a matrix are arranged on the corresponding surface of the pressure plate 323 facing the grinding transmission mechanism 34. And a wear-resistant nylon block 325 is arranged at the top of the first needle cylinder 324 to prevent the contact surface between the valve core 38 and the valve seat 39 from being not tight.

[0067] The grinding drive mechanism 34 in this embodiment is composed of a platform frame 3401, a valve seat fixing plate 3402, a valve core fixing plate 3403, a guide rod 3404, a driven gear shaft 3405, an intermediate gear 3406, a driving gear 3407, a motor (3408), a jacking cylinder 3410, bearings 3412, etc. Among them, a valve seat fixing plate 3402, a motor 3408 and a jacking cylinder 3410 are arranged on the platform frame 3401. There are two jacking cylinders 3410 which act on both sides of the valve core fixing plate 3403 respectively and are used to lift the valve core fixing plate 3403 above the valve seat fixing plate 3402. And a guide rod 3404 for guiding the valve core fixing plate 3403 during the lifting movement is arranged on the valve seat fixing plate 3402. The jacking cylinder 3410 is connected and fixed to the valve core fixing plate 3403 through an angular connecting piece 3411, which is convenient for installation. Multiple grooves 3416 arranged in a matrix and used for placing the valve seat 39 are arranged on the valve seat fixing plate 3402. Multiple driven gear shafts 3405 arranged in a matrix and used for placing the valve core 38 are arranged on the valve core fixing plate 3403. And the multiple driven gear shafts 3405 and the multiple grooves 3416 are in a one-to-one up-and-down structure and are meshed and driven with each other on the same horizontal plane. A driving gear 3407 is arranged on the output shaft of the motor 3408. An intermediate gear 3406 meshed and driven with a driven gear shaft 3405 is arranged on the valve core fixing plate 3403. And the intermediate gear 3406 is also meshed and driven with the driving gear 3407. The driven gear shaft 3405 rotates on the valve core fixing plate 3403 through a bearing 3412. That is, the driven gear shaft 3405 includes an integrally arranged driven gear and a rotating shaft. A rolling bearing 3412 is arranged between the driven gear shaft and the valve core fixing plate 3403, which is convenient for the relative rotation between the driven gear shaft 3405 and the valve core fixing plate 3403. A stepped hole for accommodating the bearing 3412 and the positioning sleeve 3413 is arranged on the valve core fixing plate 3403. The grooves 3416 on the valve seat fixing plate 3402 are arranged in one-to-one correspondence with the stepped holes on the valve core fixing plate 3403. The driving gear is driven by the motor to rotate and is transmitted to the intermediate gear, and then the intermediate gear drives multiple driven gear shafts arranged in a plane to rotate relative to the valve core fixing plate, so that the valve core placed on the driven gear shaft also rotates relative to the valve core fixing plate. Furthermore, relative rotation is generated between the rotating valve core and the stationary valve seat below, so as to achieve rotary contact grinding of the contact surface between the two. And in cooperation with the grinding pressure applying mechanism 32, a vertically downward grinding pressure is applied to the valve core 38, so as to promote the rotary contact grinding of the contact surface between the two to be sufficient and effective.

[0068] Further, in order to ensure the radial fixation and axial movement setting of the valve core 38 on the valve core fixing plate, and the stability of the valve seat 39 during the grinding process in cooperation with the valve core 38, etc., a positioning sleeve 3413 for radially clamping the square head of the valve core 38 is provided at the axial center of the driven gear shaft 3405 of the grinding transmission mechanism 34. That is, the outer wall of the positioning sleeve 3413 is tightly fitted with the driven gear shaft 3405, and the inner wall limits the radial rotation of the valve core 38 through a square structure, facilitating the driven gear shaft 3405 to drive the lower square head of the valve core 38 to grind with the valve seat 39. At the same time, the valve core fixing plate 3403 has through holes 3415 on the corresponding surface facing the valve seat fixing plate 3402 and adapted to the valve seats 39 provided on a plurality of grooves 3416. The through holes 3415 and the corresponding positioning sleeves 3413 are on the same central axis. An inner shoulder hole platform for axially abutting against the step of the valve core 38 is provided at the top of the through hole 3415. That is, after the valve core fixing plate 3403 descends towards the valve seat fixing plate 3402 under the action of the lifting cylinder 3410, the valve seat 39 provided on the groove 3416 of the valve seat fixing plate 3402 is sleeved through the through hole 3415 at the bottom of the valve core fixing plate 3403, and the bottom of the valve core fixing plate 3403 is pressed against the edge of the valve seat 39 protruding or flush with the top surface of the groove 3416, achieving the purpose of fixing the valve seat 39, facilitating the valve seat 39 to be pressed on the valve seat fixing plate 3402, making the valve seat 39 fixed in place, facilitating the grinding of the lower end of the valve core 38 with the valve seat 39, and the lower end of the valve core 38 passes through the inner hole of the inner shoulder hole platform of the through hole 3415 and contacts the valve seat 39 to form a contact surface between the two. That is, the inner shoulder hole platform does not limit the axial lifting and lowering of the lower end of the valve core 38, but will form an abutting effect on the step of the valve core 38 (such as Figure 1 shown), so that the valve core fixing plate 3403 also drives the valve core 38 to lift and lower during the vertical lifting and lowering process.

[0069] The valve seat loading and unloading mechanism 36 in this embodiment is composed of a fixed seat 361, a third needle-type cylinder 362, a moving block 363, a fourth needle-type cylinder 364, a connecting rod 365, a clamping rod 366, and a power linear guide 367. The power linear guide 367 is a telescopic linear guide with its own power, adopting a double-track structure, fixed on the guide groove 3409 provided on the valve seat fixing plate 3402. And a fixed seat 361 is respectively arranged on the two power linear guides 367. A moving block 363 with vertical lifting is connected to a single fixed seat 361 through a third needle-type cylinder 362. A pair of fourth needle-type cylinders 364 with relative movements are arranged on a single moving block 363. A connecting rod 365 is arranged on each fourth needle-type cylinder 364. A clamping rod 366 is arranged between the connecting rods 365 arranged on the two fourth needle-type cylinders 364 on the same side of the two moving blocks 363. Another clamping rod 366 is also arranged between the connecting rods 365 arranged on the two fourth needle-type cylinders 364 on the other same side of the corresponding two moving blocks 363. And the two clamping rods 366 are used to clamp a plurality of valve seats 39 arranged at intervals in a single row on the valve seat tray. And the valve seat tray and the valve seats 39 arranged thereon are conveyed by the valve seat conveying device 1.

[0070] In another embodiment, the grinding device 3 further includes a transition storage table 33 that cooperates with the valve core loading and unloading mechanism 34 and is used for temporarily storing the valve core tray. The transition storage table 33 also cooperates with the valve core tray transfer mechanism 25 of the valve core conveying device 2, that is, the valve core tray transfer mechanism 25 is used to temporarily store the valve core tray 26 on the transition storage table 33, and then perform loading and unloading cooperation with the valve core loading and unloading mechanism 31 of the grinding device 3. Specifically, the valve core tray transfer mechanism 25 realizes the transfer of the valve core tray 26 loaded with the valve core 38 from the valve core tray conveyor belt 24 to the transition storage table 33 for temporary storage through the vertical lifting of the lifting cylinder 131, the horizontal rotation of the rotary cylinder 133, and the clamping and releasing operation of the clamping jaw cylinder 135. After the valve core loading and unloading mechanism 31 of the grinding device 3 grabs the valve core 38, subsequent grinding processes are carried out. And the empty valve core tray can be grabbed from the transition storage table 33 by the valve core tray transfer mechanism 25 and returned to the valve core tray conveyor belt 24 to enter the next valve core 38 loading and conveying process. In addition, after the grinding device 3 transports the ground valve core 38 to the empty valve core tray on the transition storage table 33 again, the valve core tray transfer mechanism 25 can transfer the valve core tray 26 after grinding to the valve core tray conveyor belt 24 and then offline. In this way, the transition storage table 33 can be used to form a platform with a material temporary storage function between the valve core loading and unloading mechanism 34 and the valve core conveying device 2, so as to facilitate the operation of the grinding device 3 and the valve core conveying device 2.

[0071] In another embodiment, the grinding device 3 further includes a cantilever auxiliary table 37 disposed on the platform frame 3401 and used to support the valve seat loading and unloading mechanism 36. That is, after the power linear guide 367 of the valve seat loading and unloading mechanism 36 extends out from the valve seat fixing plate 3402, it can be supported by the cantilever auxiliary table 37 to make its movement effect more stable and reliable. A long hole groove 371 is formed on the cantilever auxiliary table 37 and is adapted to cooperate with the valve seat loading and unloading mechanism 36 and the valve seat tray. That is, the valve seat tray 16 and the valve seat 39 thereon transported by the valve seat tray lifting device 15 of the valve seat transmission device 1 can pass through the long hole groove 371 from bottom to top, and then the valve seat loading and unloading mechanism 36 can clamp and release the valve seat 39 and perform the loading and unloading of the valve seat 39 relative to the valve seat tray.

[0072] In another embodiment, the grinding device 3 further includes an abrasive adding mechanism 35 disposed on the cantilever auxiliary table 37 and above the long hole groove 371. The abrasive adding mechanism is used to add abrasive liquid to the valve seat and is composed of a second needle-shaped cylinder 351, a mounting seat 352, a nozzle 353, and a mounting frame 354. The mounting frame 354 is disposed on the cantilever auxiliary table 37 and also serves as a positioning for the valve seat loading and unloading mechanism 36. That is, after the power linear guide 367 of the valve seat loading and unloading mechanism 36 extends out, the distal end is positioned by the mounting frame 354, so as to ensure that the two clamping rods 366 are exactly above the long hole groove 371 on the cantilever auxiliary table 37 for accurate clamping and placing of the valve seat 39. The second needle-shaped cylinder 351 acts on the nozzle 353 to make the nozzle lower a certain amount of abrasive liquid onto the valve seat by the action of the second needle-shaped cylinder 351. Both of them are disposed on the mounting frame 354 through the mounting seat 352, and the number of nozzles 353 is equivalent to the number of valve seats 39 loaded and unloaded by the valve seat loading and unloading mechanism. In addition, in order to make the abrasive liquid flowing out of the nozzle 353 better enter the valve seat 39, a telescopic cylinder can be provided between the mounting seat 352 and the mounting frame 354 to enable the nozzle 353 to have a lifting function to cooperate with the entry of the abrasive liquid onto the valve seat.

[0073] During use, the vibrating feeders of the valve seat transfer device 1 and the valve core transfer device 2 respectively screen and sort and shape the valve seat 39 and the valve core 38 of the injection valve assembly to be ground, and slowly deliver them to the clamping stations of their respective placement mechanisms in sequence. After being clamped by the finger cylinders of the corresponding placement mechanisms to the valve assembly (valve seat or valve core), they are rotated 180° by the rotating cylinders thereon to reach one side of the conveyor belt and placed on the corresponding tray. The tray is made of a flexible body and is provided with a plurality of blind-hole-shaped placement holes for accommodating the valve assembly (valve seat or valve core), such as 6 - 10 arranged in a single row. The speed of the conveyor belt is controlled to place each of the multiple valve assemblies into each placement hole on the tray one by one. Sensors can also be used for detection (to pause and start the conveyor belt), so that after the tray reaches the designated position, multiple conveying sections of the conveyor belt can stop or be started as needed. Then, the conveyor belt transports the tray with the valve assembly to the lifting mechanism or the transfer mechanism station, and they respectively convey the valve seat and the valve core of the valve assembly to the grinding unit. The handling mechanism also clamps the empty tray back to the conveyor belt near the placement mechanism side and places new valve assemblies until the placement holes on the tray are filled with valve assemblies, and then continues to convey the valve assemblies to the grinding unit. The valve seat transfer device 1 transports the valve seat tray with the valve seat 39 to the long hole groove 371 of the cantilever auxiliary table 37 of the grinding device 3, and the grinding agent adding mechanism 35 drips the grinding liquid into the valve seat 39. After the valve seat loading and unloading mechanism 36 clamps the valve seat 39, it is placed in the groove 3416 of the valve seat fixing plate 3402 of the grinding transmission mechanism 34. The transmission and clamping and placing operations of the valve seat 39 are repeated multiple times until the matrix grooves 3416 on the valve seat fixing plate 3402 are filled with valve seats. Also, the valve core transfer device 2 transports the valve core tray with the valve core 38 to the transition storage table 33 of the grinding device 3. After the valve core loading and unloading mechanism 31 clamps the valve core 38, it is placed in the positioning sleeve 3413 of the driven gear shaft 3405 of the valve core fixing plate 3403 of the grinding transmission mechanism 34. The transmission and clamping and placing operations of the valve core 38 are repeated multiple times until the positioning sleeves 3413 of the matrix-driven gear shafts 3405 on the valve core fixing plate 3403 are filled with valve cores 38. Then, the lifting cylinder 3410 of the grinding transmission mechanism 34 lowers the valve core fixing plate 3403 towards the valve seat fixing plate 3402, and the through hole 3415 at the bottom of the valve core fixing plate 3403 is sleeved on the valve seat 39, and the bottom of the valve core fixing plate 3403 presses against the edge of the valve seat 39. The valve core 38 on the valve core fixing plate 3403 contacts the valve seat 39 by its own weight. Then, the displacement cylinder 322 of the grinding pressure applying mechanism 32 drives the first needle cylinder 324 on the pressure plate 323 to abut against the top of the valve core 38, and the grinding pressure is loaded by the first needle cylinder (such as about 1 kilogram of pressure for each cylinder), so that the contact surface between the valve core 38 and the valve seat 39 is stressed to meet the corresponding grinding requirements.Then, the motor 3408 of the grinding drive mechanism 34 is used to drive the rotation of the driving gear 3407, which is transmitted to the intermediate gear 3406, and then the intermediate gear 3406 drives multiple driven gear shafts 3405 arranged in a plane to rotate relative to the valve core fixing plate 3403, so that the valve core 38 placed on the driven gear shaft 3405 also rotates relative to the valve core fixing plate 3405. Furthermore, a relative rotation is generated between the rotating valve core 38 and the stationary valve seat 39 below to achieve rotary contact grinding of the contact surface between the two. Finally, after grinding for a set time, the motor 3408 is stopped, the grinding pressure applied by the first needle-shaped cylinder 324 is removed, and the displacement cylinder 322 is used to lift the pressure plate 323 away from the top of the valve core 38. Then, the valve core fixing plate 3403 is lifted by the lifting cylinder 3410. The valve core 38 is successively removed from the valve core fixing plate 3403 through the valve core loading and unloading mechanism 31 and transferred to the valve core tray on the transition storage table 33, and then output by the valve core transmission device 2. Also, the valve seat 39 is successively removed from the valve seat fixing plate 3403 through the valve seat loading and unloading mechanism 36 and transferred to the valve seat tray at the long hole groove 371 of the cantilever auxiliary table 37, and then output by the valve seat transmission device 1, thus completing the grinding process of the contact surface between the valve core and the valve seat of a batch of injection mechanism components. Finally, the above steps are repeated for the next batch of grinding processes.

[0074] With the above solution, the present conveying device and system realize the automatic processes of screening, sorting, feeding, transporting, loading and unloading, and grinding of the injection mechanism components (valve seat, valve core) to be ground, enabling the pipeline conveying and batch grinding of the injection mechanism components to meet the requirements of automatic grinding processing, which helps to improve the efficiency and quality of the fully automatic grinding of the injection mechanism components. At the same time, by programming each cylinder, the valve components can be automatically controlled according to program instructions during the transmission process, reducing labor costs and time costs.

[0075] In addition, all the power components listed in this application adopt cylinder components because in factory production, cylinders are relatively easy to obtain, the air source is relatively clean for the production environment, and it is easy to realize automatic control of the cylinder actions. Those skilled in the art should understand that the cylinder as a power component is not the only structural form, and alternative solutions can be components such as hydraulic cylinders, electric push rods, and linear motors.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the present technical solution, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A micro-lubrication injection mechanism grinding system, characterized in that, It includes a valve seat transfer device (1), a valve core transfer device (2) and a grinding device (3). The valve seat transfer device and the valve core transfer device are arranged in parallel on opposite sides relative to the grinding device. The valve seat transfer device and the valve core transfer device respectively convey a valve seat (39) and a valve core (38) to the grinding device, and then the grinding device grinds the valve seat and the valve core. The valve seat transfer device consists of a valve seat vibrating feeder (11), a valve seat placing mechanism (12) and a valve seat tray conveyor belt (14). The valve seat vibrating feeder is used for screening and sorting the valve seats. The valve seat placing mechanism is used to place the valve seats coming out of the valve seat vibrating feeder on a valve seat tray (16). The valve seat tray conveyor belt is used for transporting the valve seat tray. The valve core transfer device consists of a valve core vibrating feeder (21), a valve core placing mechanism (22) and a valve core tray conveyor belt (24). The valve core vibrating feeder is used for screening and sorting the valve cores. The valve core placing mechanism is used to place the valve cores coming out of the valve core vibrating feeder on a valve core tray (26). The valve core tray conveyor belt is used for transporting the valve core tray. Both the valve seat tray conveyor belt and the valve core tray conveyor belt are composed of a conveying straight section (141) and a conveying arc section (142), and are in a U shape or a ring shape. The grinding device consists of a valve core loading and unloading mechanism (31), a grinding pressure applying mechanism (32), a grinding driving mechanism (34) and a valve seat loading and unloading mechanism (36). The valve core loading and unloading mechanism is used for loading and unloading the valve seat between the valve core transfer device and the grinding driving mechanism. The valve seat loading and unloading mechanism is used for loading and unloading the valve seat between the valve seat transfer device and the grinding driving mechanism. The grinding driving mechanism is used for grinding between the contact surfaces of the valve core and the valve seat. The grinding pressure applying mechanism is used for applying a grinding pressure to the valve core. The valve core loading and unloading mechanism and the valve seat loading and unloading mechanism respectively perform lateral movement actions on opposite sides of the grinding driving mechanism, and the grinding pressure applying mechanism performs a lifting action above the grinding driving mechanism. The grinding device further includes a cantilever auxiliary table (37) provided on the platform frame and used for supporting the valve seat loading and unloading mechanism. A long hole groove (371) matching the valve seat loading and unloading mechanism and adapted to the valve seat tray is provided on the cantilever auxiliary table. The grinding device further includes a grinding agent adding mechanism (35) provided on the cantilever auxiliary table and located above the long hole groove. The grinding agent adding mechanism consists of a second needle-shaped air cylinder (351), a mounting seat (352), a nozzle (353) and a mounting frame (354). The mounting frame is provided on the cantilever auxiliary table and also serves as a positioning device for the valve seat loading and unloading mechanism. The second needle-shaped air cylinder acts on the nozzle, and both are provided on the mounting frame through the mounting seat. The number of nozzles is equivalent to the number of valve seats loaded and unloaded by the valve seat loading and unloading mechanism. The grinding drive mechanism consists of a platform frame (3401), a valve seat fixing plate (3402), a valve core fixing plate (3403), a driven gear shaft (3405), an intermediate gear (3406), a driving gear (3407), a motor (3408), and a lifting cylinder (3410). The platform frame is provided with a valve seat fixing plate, a motor, and a lifting cylinder. The valve core fixing plate is arranged above the valve seat fixing plate. The valve seat fixing plate is provided with a plurality of grooves (3416) arranged in a matrix for placing valve seats. The valve core fixing plate is provided with a plurality of driven gear shafts arranged in a matrix for placing valve cores. The plurality of driven gear shafts and the plurality of grooves are in a one-to-one corresponding up-and-down structure and are meshed and driven with each other on the same horizontal plane. The valve core fixing plate is provided with an intermediate gear meshed and driven with one of the driven gear shafts. The output shaft of the motor is provided with a driving gear, and the intermediate gear is also meshed and driven with the driving gear. The driven gear shaft rotates on the valve core fixing plate through a bearing (3412). The lifting cylinder is connected to the valve core fixing plate through a connecting member (3411), and the lifting cylinder acts on the valve core fixing plate and is used to move the valve core fixing plate up and down above the valve seat fixing plate. A guide rod (3404) is provided between the valve seat fixing plate and the valve core fixing plate; A positioning sleeve (3413) for radially clamping the square head of the valve core is arranged at the axial center of the driven gear shaft. The valve core fixing plate is provided with through holes (3415) corresponding to the valve seats arranged on the plurality of grooves on the corresponding surface facing the valve seat fixing plate. The through holes and the corresponding positioning sleeves are on the same central axis, and an inner shoulder hole platform for axially abutting against the valve core step is provided at the top of the through holes; The grinding pressure applying mechanism consists of a gantry frame (321), a displacement cylinder (322), a pressure plate (323), and a first needle cylinder (324). The gantry frame is provided with a displacement cylinder. The displacement cylinder is connected with a pressure plate. The pressure plate is located above the grinding drive mechanism. A plurality of first needle cylinders for applying grinding pressure to the valve cores in a one-to-one correspondence and arranged in a matrix are provided on the corresponding surface of the pressure plate facing the grinding drive mechanism. A wear-resistant nylon block (325) is provided at the top of the first needle cylinder.

2. The minimum quantity lubrication injection mechanism grinding system according to claim 1, wherein Both the valve seat placing mechanism and the valve core placing mechanism consist of a rotary cylinder (121) and a finger cylinder (122). The rotary cylinder is used to rotate the finger cylinder, and the finger cylinder is used to clamp and place the valve seat or the valve core.

3. The minimum quantity lubrication injection mechanism grinding system according to claim 1, characterized in that The valve seat transfer device further includes a valve seat tray handling mechanism (13) arranged between two parallel conveying straight sections of the valve seat tray conveyor belt and close to the valve seat placing mechanism side. The valve core transfer device further includes a valve core tray handling mechanism (23) arranged between two parallel conveying straight sections of the valve core tray conveyor belt and close to the valve core placing mechanism side. Both the valve seat tray handling mechanism and the valve core tray handling mechanism consist of a lifting cylinder (131), a rotary cylinder (133), and a jaw cylinder (135). The rotary cylinder is arranged on the lifting cylinder through a bottom plate (132). The jaw cylinder is arranged on the rotary cylinder through a bracket (134). The jaw cylinder is used to clamp and place the valve seat tray or the valve core tray.

4. The micro-lubrication injection mechanism grinding system according to claim 1, wherein, The valve seat transfer device further includes a valve seat tray lifting mechanism (15) for conveying valve seats to the grinding device, and the valve seat tray lifting mechanism is composed of a valve seat tray transfer belt (151), a rodless cylinder (152), and a column (153). A rodless cylinder acting on the valve seat tray transfer belt is arranged on the column; there are two rodless cylinders, and fixing blocks (154) connected to the two rodless cylinders are respectively arranged on both sides of the valve seat tray transfer belt; The valve core transfer device further includes a valve core tray transfer mechanism (25) for conveying valve cores to the grinding device, and the valve core tray transfer mechanism has the same structure as the valve core tray handling mechanism.

5. The minimum quantity lubrication injection mechanism grinding system according to claim 1, characterized in that, The valve core loading and unloading mechanism is composed of a horizontal rodless cylinder (311), a vertical rodless cylinder (312), a crossbar (313), and finger cylinders (314). There are two horizontal rodless cylinders, which are respectively arranged on both sides of the grinding transmission mechanism. A vertical rodless cylinder is arranged on each of the two horizontal rodless cylinders. A crossbar is arranged between the two vertical rodless cylinders. The crossbar is located above the grinding transmission mechanism, and a plurality of finger cylinders are arranged on the corresponding surface of the crossbar facing the grinding transmission mechanism for clamping and placing a plurality of valve cores arranged at intervals in a single row.

6. The minimum quantity lubrication injection mechanism grinding system according to claim 1, wherein The valve seat loading and unloading mechanism is composed of a fixed seat (361), a third needle-type cylinder (362), a moving block (363), a fourth needle-type cylinder (364), a connecting rod (365), a clamping rod (366), and a power linear guide (367). The power linear guide adopts a double-track structure and is fixed on the grinding transmission mechanism. A fixed seat is arranged on each of the two power linear guides. A moving block with vertical lifting is connected to a single fixed seat through a third needle-type cylinder. A pair of fourth needle-type cylinders with relative movements are arranged on a single moving block. A connecting rod is arranged on each fourth needle-type cylinder. A clamping rod is arranged between the connecting rods arranged on the two fourth needle-type cylinders on the same side of the two moving blocks. Another clamping rod is arranged between the connecting rods arranged on the two fourth needle-type cylinders on the other same side of the corresponding two moving blocks. The two clamping rods are used for clamping and placing a plurality of valve seats arranged at intervals in a single row.

7. The minimum quantity lubrication injection mechanism grinding system according to any one of claims 1-6, characterized in that, The grinding device further includes a transition storage table (33) that cooperates with the valve core loading and unloading mechanism and is used for temporarily storing valve core trays.

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