Multi-layer chain type tool magazine

Abstract

The invention relates to the field of numerical control machine tools, in particular to a multi-layer chain type tool magazine which comprises a chain type tool storage bin, a forward and reverse rotation motor, a collecting box, a positioning assembly, a heat dissipation assembly and a cleaning assembly. The positive and negative rotation motor is coaxially connected with a positioning assembly which keeps tool changing stable and accurate, the positioning assembly is installed in the chain type tool storage bin and connected with the chain type tool storage bin, and a heat dissipation assembly for heat dissipation and lubrication is installed on the positioning assembly. A cleaning assembly used for cleaning a replaced cutter and assisting in accurate positioning of the cutter is installed above the heat dissipation assembly, a collecting box used for collecting waste liquid and waste materials is rotationally installed between the forward and reverse rotation motor and the chain type cutter storage bin, and the heat dissipation assembly and the cleaning assembly are matched through different rotating directions of the positioning assembly. The problem of inaccurate positioning is solved, and meanwhile the service life of the cutter and the chain type cutter storage bin is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of numerical control machine tools, and specifically to a multi-layer chain-type tool magazine. Background Art

[0002] A chain-type tool magazine is a device used in current automated numerical control machining centers for loading, storing, and switching tools. The chain-type tool magazine meets the requirements for different tools in the automated machining process. It consists of a series of tool positions connected together. The chain structure of the chain-type tool magazine can make its structure compact, with a large tool storage capacity. At the same time, the chain-shaped structure can be configured according to the usage environment, facilitating tool changing and tool storage. When the number of tools needs to be increased, only the length of the chain needs to be increased, which is quick and convenient to add tools.

[0003] Currently, in numerical control automatic machining, a tool magazine is often used to achieve automatic tool change machining. The chain-type tool magazine is favored due to its large tool storage capacity and the convenience of adding tools for tool change. The chain-type tool magazine uses chain drive for tool switching in a numerical control machine tool. When the chain-type tool magazine is in use, the tool bin on the drive chain transfers the tool to the tool change mechanical claw. When the chain-type tool magazine is working, with the continuous operation of the numerical control machine tool, under the working conditions of frequent tool change, the high-frequency rotation of the drive chain will cause the chain pitch to increase. The increase in the chain pitch will cause the tool bin connected to the drive chain to be unable to accurately align for tool change. Therefore, the chain-type tool magazine often has a positioning and locking device for locking after long-term use.

[0004] The chain-type tool magazine can store a large number of tools when in use. However, at the same time, in order to increase the tool storage capacity, the chain not only serves as a transmission mechanism but also undertakes the function of carrying tools. Under the working conditions of long-term high-frequency tool change, the drive chain itself has poor rigidity, and combined with the characteristics of large transmission clearance in chain drive and high-intensity operation, the increase in the chain pitch of the drive chain leads to a reduction in the tool change accuracy of the chain-type tool magazine, easily resulting in tool change failure, and thus causing the failure of numerical control machine tool machining. At the same time, during high-frequency rotation, the drive chain continuously rubs, generating serious heat, leading to increased wear of the drive chain and greatly reducing its service life.

[0005] To solve the above problems, in the prior art, a control electric lever is added to the drive chain of the chain-type tool magazine to insert the locking rod into the tool clamp lock hole when the chain sprocket rotates, thereby achieving the positioning of the tool. However, during the use process, using chain drive to control the locking rod to achieve precise positioning, the positioning accuracy is greatly affected by the accuracy of the drive chain, and the rotation of the lever will cause a decrease in the stability during tool change of the chain-type tool magazine, reducing the tool change accuracy of the chain-type tool magazine.

[0006] To solve this problem, the present invention designs a multi-layer chain-type tool magazine. Summary of the Invention

[0007] Through a multi-layer chain-type tool magazine of the present invention, the problem that the positioning is inaccurate due to the increase in the chain gap during long-term tool changing in the multi-layer chain-type tool magazine is solved.

[0008] A multi-layer chain-type tool magazine provided by the present invention includes a chain-type tool storage bin, a forward and reverse motor, a collection box, a positioning component, a heat dissipation component and a cleaning component. The chain-type tool storage bin is rotationally connected to a forward and reverse motor that drives rotational tool changing. The forward and reverse motor is coaxially connected to a positioning component that maintains stable and accurate tool changing. The positioning component is installed in the chain-type tool storage bin and is connected to the chain-type tool storage bin. A heat dissipation component for heat dissipation and lubrication is installed on the positioning component. Above the heat dissipation component, a cleaning component for cleaning the tool after replacement and assisting in accurate tool positioning is installed. A collection box for collecting waste liquid and waste is rotationally installed between the forward and reverse motor and the chain-type tool storage bin.

[0009] Preferably, the chain-type tool storage bin includes a base, a transmission chain, chain sprockets, a tool bin and a top cover. The number of chain sprockets is two, and the chain sprockets are symmetrically rotationally connected to the inner top surface of the base. The two chain sprockets are meshed with the transmission chain for transmission. One of the chain sprockets is coaxially fixedly connected to the forward and reverse motor. The transmission chain is equidistantly fixedly installed with tool bins on the side close to the base. A groove is formed on the side of the base. The top cover is connected to the base by bolts and is located above the transmission chain. The base is in a runway-shaped structure, and a through hole penetrating the base is formed on the base facing the collection box.

[0010] Preferably, the positioning component includes a positioning ratchet, a positioning pawl, a positioning spring and a positioning push rod. The positioning ratchet is coaxially fixedly installed above the chain sprocket. A cavity is formed inside the positioning ratchet. The positioning pawl is located at the end of the positioning ratchet close to the transmission chain. The positioning pawl is fixedly connected to the top cover by a fixing rod. A chute is formed inside each tooth of the positioning ratchet. The positioning push rod is slidably connected inside the chute. The positioning push rod penetrates the positioning ratchet, and a positioning spring is fixedly installed on the side of the positioning push rod close to the positioning ratchet.

[0011] Preferably, the heat dissipation component includes a ratchet shaft, heat dissipation blades, a heat dissipation bevel gear, an oil storage tank, a one-way oil nozzle and a liquid passage. The ratchet shaft is fixedly installed with the positioning ratchet. A heat dissipation bevel gear is coaxially installed on the ratchet shaft. The heat dissipation bevel gear and the ratchet shaft penetrate the top cover. The ratchet shaft is fixedly installed with heat dissipation blades. An oil storage tank is fixedly installed at the tooth of the positioning ratchet. The oil storage tank is communicated with the chute through the liquid passage. A suction pipe is installed at the bottom of the oil storage tank and penetrates the positioning ratchet and extends into the cavity. A one-way inlet valve is installed at one end of the suction pipe close to the oil storage tank. A one-way oil nozzle is installed on the side of the oil storage tank close to the transmission chain.

[0012] Preferably, the cleaning assembly includes a cleaning connecting rod, a cleaning bevel gear, a cleaning clamp, a cleaning lever, a cleaning push rod, a cleaning pressure rod, a cleaning sponge, an oil spray airbag, and a support sleeve rod. The support sleeve rod is fixedly installed with the top cover. The cleaning connecting rod is rotatably connected to the support sleeve rod. One end of the cleaning connecting rod close to the heat dissipation bevel gear is fixedly provided with the cleaning bevel gear. The cleaning bevel gear is in meshing transmission with the heat dissipation bevel gear. One end of the cleaning connecting rod away from the cleaning bevel gear is fixedly installed with the cleaning clamp. The inner wall of the cleaning clamp is fixedly installed with the cleaning sponge. A cleaning hole for placing the cleaning pressure rod and the cleaning push rod is formed in the cleaning connecting rod near one end of the cleaning clamp. A cleaning lever is arranged inside the cleaning hole. Both ends of the cleaning lever are respectively in contact with the cleaning pressure rod and the cleaning push rod. A cleaning spring is installed on one side of the cleaning lever away from the cleaning pressure rod. One end of the cleaning push rod away from the cleaning lever is provided with an oil spray airbag fixedly connected to the cleaning hole;

[0013] The cleaning assembly further includes a self-oiling assembly. The self-oiling assembly includes an oil storage tank and a connecting pipe. Both ends of the connecting pipe are respectively communicated with the oil spray airbag and the oil storage tank. A one-way liquid outlet valve is arranged in the connecting pipe. One end of the oil storage tank away from the connecting pipe is fixedly installed with a return spring. The end of the return spring is fixedly installed with a slider slidably connected to the oil storage tank. A one-way liquid spraying valve is arranged at the end of the oil spray airbag. An oil inlet is arranged through the cleaning connecting rod and the oil storage tank;

[0014] The cleaning hole formed at the end of the cleaning connecting rod is a "U" shape that is flipped 90 degrees to the left. The cleaning clamp is in a C shape. The cleaning clamp is eccentrically fixedly installed on the cleaning connecting rod. The cleaning sponge on the cleaning clamp is located at the edge of the cleaning clamp;

[0015] The circumference of one rotation of the cleaning bevel gear is equal to the moving distance between adjacent tool storage bins.

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

[0017] 1. For the multi-layer chain-type tool magazine of the present invention, locking is achieved through the positioning ratchet teeth and pawls during tool change rotation. The C-shaped cleaning clamp is used to achieve precise positioning of the tool, and the positioning pawl is relied on to achieve the overall balance of the chain-type tool storage bin during the tool change process, increasing the stability of the tool change process and avoiding the machine tool from stopping working due to tool change failure.

[0018] 2. For the multi-layer chain-type tool magazine of the present invention, the positioning push rod presses to drive the oil liquid circulation system. Through the closed-loop oil circuit composed of the oil storage tank - liquid passage - one-way nozzle, the pressure energy generated by mechanical movement is converted into lubrication power. At the same time, the heat dissipation blades evenly distribute the sprayed oil liquid and assist in cooling, forming a dynamic maintenance system of "lubrication - heat dissipation - cooling".

[0019] 3. A multi-layer chain-type tool magazine of the present invention, the cleaning fixture and the oil spray airbag form a force conduction chain through the cleaning lever. When the tool presses the cleaning pressure rod, the cleaning sponge absorbs water and the oil spray airbag sprays oil synchronously, realizing the integration of the dual functions of "physical cleaning - surface protection". Moreover, the cleaning spring and the suction pipe respectively realize the mechanism reset and the oil supply, forming a complete maintenance closed loop. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall view of the present invention;

[0021] Figure 2 is the front main view of the present invention;

[0022] Figure 3 is the right-side cross-sectional view of the present invention;

[0023] Figure 4 is the main cross-sectional view of the present invention;

[0024] Figure 5 is the overall view of the cooperation of the internal components of the present invention;

[0025] Figure 6 is the structural diagram of the positioning ratchet of the present invention;

[0026] Figure 7 is the cross-sectional view of the positioning ratchet and the oil storage tank of the present invention;

[0027] Figure 8 is the present invention Figure 6 partial schematic diagram at A;

[0028] Figure 9 is the cross-sectional view of the cleaning component of the present invention.

[0029] In the figure: 1. Chain-type tool storage bin, 11. Base, 12. Transmission chain, 13. Chain belt pulley, 14. Tool bin, 15. Top cover, 16. Groove, 17. Bolt, 2. Forward and reverse motor, 3. Collection box, 4. Positioning component, 41. Positioning ratchet, 42. Positioning pawl, 43. Positioning spring, 44. Positioning push rod, 45. Fixed rod, 46. Chute, 5. Heat dissipation component, 51. Ratchet shaft, 52. Heat dissipation blades, 53. Heat dissipation bevel gear, 54. Oil storage tank, 55. One-way oil nozzle, 56. Liquid passage, 57. Suction pipe, 58. One-way liquid inlet valve, 6. Cleaning component, 61. Cleaning link, 62. Cleaning bevel gear, 63. Cleaning fixture, 64. Cleaning lever, 65. Cleaning push rod, 66. Cleaning pressure rod, 67. Cleaning sponge, 68. Oil spray airbag, 69. Support sleeve rod, 611. Cleaning hole, 612. Cleaning spring, 7. Self-oiling component, 71. Oil storage groove, 72. Connecting pipe, 73. One-way liquid outlet valve, 74. Return spring, 75. Slide block, 76. One-way liquid spray valve, 77. Oil inlet. Detailed implementation manners

[0030] In order to better understand the above solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners.

[0031] As Figure 1-9 shown, a technical solution is provided. A multi-layer chain-type tool magazine provided by the present invention includes a chain-type tool storage bin 1, a forward and reverse motor 2, a collection box 3, a positioning component 4, a heat dissipation component 5 and a cleaning component 6. The chain-type tool storage bin 1 is rotatably connected to a forward and reverse motor 2 that drives rotation for tool change. The forward and reverse motor 2 is coaxially connected to a positioning component 4 that maintains stable and precise tool change. The positioning component 4 is installed in the chain-type tool storage bin 1 and is connected to the chain-type tool storage bin 1. A heat dissipation component 5 for heat dissipation and lubrication is installed on the positioning component 4. Above the heat dissipation component 5, a cleaning component 6 for cleaning the tool after replacement and assisting in precise tool positioning is installed. A collection box 3 for collecting waste liquid and waste materials is rotatably installed between the forward and reverse motor 2 and the chain-type tool storage bin 1;

[0032] When the chain-type tool magazine is in use, it can store a large number of tools. However, at the same time, in order to increase the tool storage capacity, the chain not only serves as a transmission mechanism but also undertakes the function of carrying tools. Under the working conditions of long-term high-frequency tool change, the transmission chain 12 itself has poor rigidity, and the characteristics of large transmission clearance in chain drive combined with high-intensity operation result in an increase in the chain pitch of the transmission chain 12, leading to a reduction in the tool change accuracy of the chain-type tool magazine, easily causing tool change failure, and thus resulting in the failure of numerical control machine tool processing. At the same time, during high-frequency rotation, the transmission chain 12 continuously rubs, generating serious heat, resulting in increased wear of the transmission chain 12 and greatly reducing its service life;

[0033] Through the coaxial design of the positioning component 4, the heat dissipation component 5 and the forward and reverse motor 2, and the meshing transmission of the cleaning component 6 and the heat dissipation component 5, under normal conditions, the forward and reverse motor 2 rotates to drive the chain-type tool storage bin 1 to rotate with the tools, and at the same time, the heat dissipation component 5, the positioning component 4 and the cleaning component 6 move. The heat dissipation component 5 moves to dissipate heat from and clean the dirt on the chain-type tool storage bin 1, while the cleaning component 6 rotates to complete its own cleaning to prepare for its own cleanliness during the next tool change;

[0034] When a tool change is required, the forward and reverse motor 2 is controlled to rotate in the reverse direction. At this time, the positioning component 4 rotates in the reverse direction to lock and achieve positioning. An external tool change manipulator is used to clamp and place an external tool in the chain-type tool storage bin 1. The problem of inaccurate positioning is solved by the reverse positioning method. The cleaning component 6 is installed outside the chain-type tool storage bin 1, and at the same time, when the tool is installed, it passes through the cleaning component 6, which can clean the water attached to the outer surface of the tool during operation and apply oil to the tool for rust prevention, avoiding tool damage caused by rust in the tool storage room. At the same time, the cleaning component 6 assists in achieving precise tool change positioning, enhancing the accuracy of tool change;

[0035] During the movement of the chain-type tool storage bin 1, a collection box 3 is rotatably installed above the forward and reverse motor 2. The collection box 3 is conical, and the collection box 3 collects the waste liquid and waste generated by the heat dissipation component 5 and the cleaning component 6 and discharged during the rotation process.

[0036] The chain-type tool storage bin 1 includes a base 11, a transmission chain 12, chain sprockets 13, a tool bin 14 and a top cover 15. The number of the chain sprockets 13 is two, and the chain sprockets 13 are symmetrically and rotatably connected to the inner top surface of the base 11. The two chain sprockets 13 are meshed and driven with the transmission chain 12. One of the chain sprockets 13 is coaxially and fixedly connected to the forward and reverse motor 2. The tool bins 14 are fixedly installed at equal intervals on one side of the transmission chain 12 close to the base 11. A groove 16 is formed on the side of the base 11. The top cover 15 is connected to the base 11 by bolts 17 and is located above the transmission chain 12. The base 11 is a runway-shaped structure, and a through hole penetrating the base 11 is formed on the base 11 opposite to the collection box 3;

[0037] The forward and reverse motor 2 is driven to drive the chain sprocket 13 to rotate. The chain sprocket 13 synchronously drives the transmission chain 12 and the tool bin 14 to move on the base 11. The transmission chain 12 is driven to rotate in the reverse direction, so that the tool bin 14 that needs to change the tool is rotated to the groove 16 at the tool changing position of the base 11, and the external tool changing manipulator is cooperated to perform the tool changing behavior in the tool changing area. The tool changing manipulator adopts a rotational tool changing method. After rotation, the tool is carried and faces the opening of the tool bin 14 in the tool changing area, and then the tool is driven to move down into the tool bin 14, so as to realize tool changing; and the top cover 15 covers above the base 11 to protect the parts on the base 11 and the transmission chain 12;

[0038] Secondly, the tool bin 14 stores the tools required for the numerical control machine tool processing. The tool bin 14 is a cylindrical tube shape, and the inside is an inverted frustum shape. The tool shanks are all frustum shapes with unified settings, which is convenient for the tool changing manipulator to grab and stably install in the tool bin 14.

[0039] The positioning component 4 includes a positioning ratchet 41, a positioning pawl 42, a positioning spring 43 and a positioning push rod 44. The positioning ratchet 41 is coaxially and fixedly installed above the chain sprocket 13. A cavity is formed inside the positioning ratchet 41. The positioning pawl 42 is located at the end of the positioning ratchet 41 close to the transmission chain 12. The positioning pawl 42 and the top cover 15 are fixedly connected by a fixing rod 45. A chute 46 is formed inside each tooth of the positioning ratchet 41. The positioning push rod 44 is slidably connected inside the chute 46. The positioning push rod 44 penetrates the positioning ratchet 41. A positioning spring 43 is fixedly installed on the side of the positioning push rod 44 close to the positioning ratchet 41;

[0040] The forward and reverse motor 2 is coaxially connected to the positioning component 4 that ensures stable and precise tool change. When the positioning ratchet 41 rotates forward, the positioning pawl 42 will not affect the normal rotation of the positioning ratchet 41. When replacing the tool that needs to be replaced, rotating forward moves the tool to the range of the groove 16, and then driving the positioning ratchet 41 to rotate in reverse, causing the positioning ratchet 41 to rotate in the reverse direction and contact the positioning pawl 42. The positioning pawl 42 then locks the positioning ratchet 41 to achieve precise positioning of the positioning ratchet. The cooperation between the positioning pawl 42 and the positioning ratchet 41 realizes stable and precise tool change in the tool magazine 14 during tool replacement;

[0041] Each ratchet tooth recess of the positioning ratchet 41 is provided with a chute 46. A positioning push rod 44 is installed in the chute 46. The positioning push rod 44 can achieve precise positioning and lubricate the drive chain 12. When the positioning ratchet 41 rotates in reverse, it drives the positioning push rod 44 to contact the positioning pawl 42. The positioning push rod 44 is squeezed and slides along the direction of the chute 46, thereby controlling the gas in the chute to move towards the heat dissipation component. The cooperation between the positioning push rod 44 and the heat dissipation component 5 realizes the ejection and closing of the oil liquid in the heat dissipation component 5 to dissipate heat and lubricate the drive chain 12. The positioning spring 43 between the positioning push rod 44 and the positioning ratchet 41 realizes the automatic reset of the positioning push rod 44 when the positioning ratchet 41 rotates forward, ensuring the normal operation of the positioning function. During the reverse rotation process, it realizes shock absorption during the tool change process and reduces the inertia when the drive chain 12 stops, enhancing the tool change accuracy.

[0042] The heat dissipation component 5 includes a ratchet shaft 51, heat dissipation fins 52, a heat dissipation bevel gear 53, an oil storage tank 54, a one-way oil nozzle 55, and a liquid passage 56. The ratchet shaft 51 is fixedly installed with the positioning ratchet 41. The heat dissipation bevel gear 53 is coaxially installed on the ratchet shaft 51. The heat dissipation bevel gear 53 and the ratchet shaft 51 penetrate the top cover 15. The ratchet shaft 51 is fixedly installed with heat dissipation fins 52. A liquid storage tank 54 is fixedly installed at the ratchet teeth of the positioning ratchet 41. The liquid storage tank 54 is connected to the chute 46 through the liquid passage 56. A suction pipe 57 is installed at the bottom of the liquid storage tank 54 and extends through the positioning ratchet 41 to the cavity. A one-way inlet valve 58 is installed at one end of the suction pipe 57 close to the liquid storage tank 54. A one-way oil nozzle 55 is installed on the side of the liquid storage tank 54 close to the drive chain 12;

[0043] The positioning ratchet 41 drives the synchronous rotation of the ratchet shaft 51. The heat dissipation bevel gear 53 is also driven to rotate synchronously under the control of the ratchet shaft 51, thereby controlling the rotation of the cleaning assembly 6 to carry out the cleaning work. The rotation of the ratchet shaft 51 drives the heat dissipation blades 52 to effectively dissipate heat from the drive chain 12, and can effectively blow out and clean the machining debris remaining on the cutter in the base 11 and the drive chain 12 through the through holes, reducing the wear of the drive chain 12 during movement; when the positioning ratchet 41 rotates in the reverse direction, it drives the positioning push rod 44 to contact the positioning pawl 42. In the initial state, the oil storage tank 54, the liquid passage 56 and the chute 46 are filled with oil. The positioning push rod 44 is extruded and slides along the chute 46, so that the oil in the chute 46 enters the oil storage tank 54 through the liquid passage 56. The pressure of the oil storage tank 54 increases and the oil is sprayed out from the one-way oil nozzle 55. At this time, the one-way oil nozzle 55 facing the drive chain 12 sprays oil, thereby realizing oil cooling of the drive chain 12 quantitatively while changing the tool, and achieving the effect of lubricating the drive chain 12;

[0044] After the tool change is completed and the positive and reverse motor 2 drives the normal rotation of the heat dissipation assembly 5, the locking of the positioning pawl 42 and the positioning ratchet 41 is released, that is, the extrusion of the positioning pawl 42 on the positioning push rod 44 is released. The positioning push rod 44 is reset under the action of the positioning spring 43. The positioning push rod 44 is reset along the chute 46, thereby sucking the oil in the oil storage tank. Under the suction action, the one-way liquid inlet valve 58 is driven to open, and the oil in the hollow of the positioning ratchet 41 is replenished into the oil storage tank 54, the liquid passage 56 and the chute 46 through the suction pipe 57; thus ensuring that each time the tool is changed, the cooperation between the positioning assembly 4 and the heat dissipation assembly 5 can realize oil cooling of the drive chain 12 while carrying out quantitative lubrication, improving the service life of the drive chain 12. Secondly, the oil in the cavity of the positioning ratchet 41 has an oil outlet to replenish the oil.

[0045] The cleaning assembly 6 includes a cleaning connecting rod 61, a cleaning bevel gear 62, a cleaning clamp 63, a cleaning lever 64, a cleaning push rod 65, a cleaning pressure rod 66, a cleaning sponge 67, an oil spray airbag 68 and a support sleeve rod 69. The support sleeve rod 69 is fixedly installed with the top cover 15. The cleaning connecting rod 61 is rotatably connected to the support sleeve rod 69. One end of the cleaning connecting rod 61 close to the heat dissipation bevel gear 53 is fixedly provided with the cleaning bevel gear 62. The cleaning bevel gear 62 is in meshing transmission with the heat dissipation bevel gear 53. One end of the cleaning connecting rod 61 away from the cleaning bevel gear 62 is fixedly installed with the cleaning clamp 63. The inner wall of the cleaning clamp 63 is fixedly installed with the cleaning sponge 67. A cleaning hole 611 for placing the cleaning pressure rod 66 and the cleaning push rod 65 is formed in the cleaning connecting rod 61 near one end of the cleaning clamp 63. A cleaning lever 64 is arranged inside the cleaning hole 611. Both ends of the cleaning lever 64 are respectively in contact with the cleaning pressure rod 66 and the cleaning push rod 65. A cleaning spring 612 is installed on one side of the cleaning lever 64 away from the cleaning pressure rod 66. One end of the cleaning push rod 65 away from the cleaning lever 64 is provided with an oil spray airbag 68 fixedly connected to the cleaning hole 611;

[0046] The cleaning assembly 6 further includes a self-oiling assembly 7. The self-oiling assembly 7 includes an oil storage tank 71 and a connecting pipe 72. Both ends of the connecting pipe 72 are respectively communicated with the oil spray airbag 68 and the oil storage tank 71. A one-way liquid outlet valve 73 is arranged in the connecting pipe 72. One end of the oil storage tank 71 away from the connecting pipe 72 is fixedly installed with a return spring 74. The end of the return spring 74 is fixedly installed with a slider 75 slidably connected to the oil storage tank 71. A one-way liquid spraying valve 76 is arranged at the end of the oil spray airbag 68. An oil inlet 77 is arranged through between the oil storage tank 71 and the cleaning connecting rod 61;

[0047] The cleaning hole 611 formed at the end of the cleaning connecting rod 61 is in a "U" shape that is flipped 90 degrees to the left. The cleaning clamp 63 is in a C shape. The cleaning clamp 63 is eccentrically fixedly installed on the cleaning connecting rod 61. The cleaning sponge 67 on the cleaning clamp 63 is located at the edge of the cleaning clamp 63;

[0048] The circumference of one rotation of the cleaning bevel gear 62 is equal to the moving distance between adjacent tool magazines 14;

[0049] The ratchet shaft 51 drives the heat dissipation bevel gear 53 to rotate. The heat dissipation bevel gear 53 drives the cleaning connecting rod 61 and the cleaning clamp 63 to rotate. However, the cleaning clamp 63 deflects to increase the centrifugal force. When swinging, the density of water is greater than that of the sponge. When swinging, the centrifugal radius of water is greater than that of the sponge. Thus, the water in the cleaning sponge 67 is centrifugally dried, and the self-cleaning of the cleaning sponge 67 is realized. At the same time, when replacing the tool, the use capacity of the cleaning sponge 67 is increased to improve the cleaning effect of the tool;

[0050] At the same time, the circumference of the cleaning bevel gear 62 during one rotation is exactly the moving distance from the next tool bin 14 to the previous tool bin 14. At the same time, the cleaning fixture 63 rotates 360 degrees, always keeping the cleaning fixture 63 and the tool bin 14 in a parallel state so that the tool can be placed in the tool bin 14.

[0051] During the tool placement process, the C-shaped cleaning fixture 63 is conducive to moving the tool into the cleaning sponge 67 of the cleaning fixture 63, thereby cleaning the water attached to the surface of the tool. The cleaning sponge 67 is deformed after contacting the tool, making it suitable for a variety of tool models, increasing the range of tool cleaning models. At the same time, when the tool is horizontally moved into the cleaning fixture 63 by the tool changing robot, it will also be squeezed into the cleaning pressure rod 66. The cleaning pressure rod 66 moves along the concave cleaning hole 611 and squeezes the cleaning lever 64 and the compressed cleaning spring 612. The cleaning lever 64 deflects and pushes the cleaning push rod 65 to move along the cleaning hole 611 and gradually squeezes the oil spray airbag 68. After the oil spray airbag 68 is pressurized, the oil inside the one-way liquid outlet valve 73 is discharged to lubricate the tool. Then the tool changing robot drives the tool downward and out of the cleaning fixture 63 to the tool magazine 14, completing the tool installation while avoiding conflict with the rotating cleaning fixture 63.

[0052] After the tool is separated from the cleaning fixture 63, the squeezing force on the return spring 74 is also released. The cleaning spring 612 is reset to push the cleaning pressure rod 66 to return to its original state. At the same time, the oil spraying airbag 68 recovers under its own elasticity and pushes the cleaning push rod 65 to return to its original state. When the oil spraying airbag 68 recovers, negative pressure is generated to cooperate with the pressure in the oil storage tank 71, so that the connecting pipe 72 absorbs the oil in the oil storage tank 71 into the oil spraying airbag 68 for next use. At the same time, the return spring 74 in the oil storage tank 71 pushes the slider 75 to squeeze the oil in the oil storage tank 71, prompting the oil to replenish the oil spraying airbag 68 to keep the oil in the oil storage tank 71 full. At the same time, the movement of the slider 75 also collects the inner wall of the oil storage tank 71, avoiding waste of oil and increasing the cost of oil use.

[0053] Working principle: In the initial state, the tool-changing manipulator is stationary, and the forward and reverse motor 2, the positioning component 4, the heat dissipation component 5, and the cleaning component 6 are all not working. When receiving the tool-changing instruction from the system, the forward and reverse motor 2 starts to rotate forward. The forward and reverse motor 2 drives the chain sprocket 13 to rotate. The rotation of the chain sprocket 13 drives the drive chain 12 to rotate. The rotation of the drive chain 12 drives the tool magazine 14 fixedly installed on each link to rotate. The rotation of the tool magazine 14 sends the tool to the tool-changing area required by the base 11. At this time, the positioning ratchet 41 rotates with the chain sprocket 13. The rotation of the positioning ratchet 41 drives the ratchet shaft 51 to rotate. The rotation of the ratchet shaft 51 drives the heat dissipation blades 52 to rotate. The rotation of the heat dissipation blades 52 dissipates heat and blows away the waste on the base 11. At the same time, the rotation of the ratchet shaft 51 drives the heat dissipation bevel gear 53 to rotate. The heat dissipation bevel gear 53 drives the engaged cleaning bevel gear 62 to rotate. The rotation of the cleaning bevel gear 62 drives the cleaning link 61 to rotate. The rotation of the cleaning link 61 drives the cleaning clamp 63 to rotate. The rotation of the cleaning clamp 63 drives the cleaning sponge 67 to rotate. The rotation of the cleaning sponge 67 spins off the water in the cleaning sponge 67;

[0054] When the tool changing manipulator brings back the used tool, the forward and reverse motor 2 rotates in reverse. At this time, the chain sprocket 13 rotates in reverse to drive the positioning ratchet 41 to rotate in reverse. The reverse rotation of the positioning ratchet 41 is locked by the positioning pawl 42 on the tool magazine 14, positioning the tool magazine 14 in the area required for tool changing. The positioning pawl 42 is stuck in the tooth recess of the positioning ratchet 41, and the positioning pawl 42 presses the positioning push rod 44. The positioning push rod 44 slides along the chute 46, and the positioning spring 43 is compressed to react on the positioning pawl 42 for shock absorption and to ensure smooth tool changing of the base 11. When the positioning push rod 44 is pressed and slides along the direction of the chute 46, the hydraulic fluid in the chute 46 enters the oil storage tank 54 through the liquid passage 56. The pressure in the oil storage tank 54 increases, causing the hydraulic fluid to be ejected from the one-way hydraulic fluid nozzle 55 to the link of the drive chain 12 for lubrication and cooling. At the same time, the tool changing manipulator rotates the tool to fit and press the cleaning fixture 63. The cleaning sponge 67 on the cleaning fixture 63 absorbs the residual water on the tool surface. At the same time, the tool presses the cleaning lever 66, the cleaning lever 66 presses the cleaning lever 64, the cleaning lever 64 pushes the cleaning push rod 65, and the cleaning push rod 65 presses the oil spraying air bag 68. The oil spraying air bag 68 is pressurized to spray oil on the tool surface to protect the tool by spraying oil. The tool moves down into the storage. The forward and reverse motor 2 rotates forward, the positioning ratchet 41 rotates forward, the positioning pawl 42 no longer catches the positioning push rod 44, and the positioning spring 43 drives the positioning push rod 44 to reset. The oil storage tank 54 absorbs the hydraulic fluid through the suction pipe 57 to ensure the pressure balance in the tank and realize the automatic replenishment of the hydraulic fluid. The heat dissipation fins 52 rotate to blow the hydraulic fluid on the drive chain 12 evenly and cool the tool again. The cleaning fixture 63 rotates to drain the water in the cleaning sponge 67. At the same time, the cleaning lever 64 is pushed by the cleaning spring 612 to reset, and the oil spraying air bag 68 resets, so that the oil storage tank 71 is automatically refilled with the hydraulic fluid for reuse. The collection box 3 collects waste liquid and waste materials.

[0055] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-layer chain-type tool magazine, characterized in that: It includes a chain - type tool storage bin (1), a forward - and - reverse motor (2), a collection box (3), a positioning component (4), a heat - dissipation component (5) and a cleaning component (6). The chain - type tool storage bin (1) is rotatably connected to a forward - and - reverse motor (2) that drives rotation for tool changing. The forward - and - reverse motor (2) is coaxially connected to a positioning component (4) that maintains stable and precise tool changing. The positioning component (4) is installed in the chain - type tool storage bin (1) and is connected to the chain - type tool storage bin (1). A heat - dissipation component (5) for heat dissipation and lubrication is installed on the positioning component (4). Above the heat - dissipation component (5), a cleaning component (6) is installed to clean the tool after replacement and assist in precise tool positioning. A collection box (3) for collecting waste liquid and waste is rotatably installed between the forward - and - reverse motor (2) and the chain - type tool storage bin (1).

2. The multi-layer chain-type tool magazine according to claim 1, wherein: The chain - type tool storage bin (1) includes a base (11), a transmission chain (12), chain sprockets (13), a tool bin (14) and a top cover (15). The number of chain sprockets (13) is two, and the chain sprockets (13) are symmetrically rotatably connected to the inner top surface of the base (11). The two chain sprockets (13) are meshed with the transmission chain (12) for transmission. One of the chain sprockets (13) is coaxially and fixedly connected to the forward - and - reverse motor (2). The tool bin (14) is fixedly installed at equal intervals on one side of the transmission chain (12) close to the base (11). A groove (16) is opened on the side of the base (11). The top cover (15) is connected to the base (11) by bolts (17) and is located above the transmission chain (12). The base (11) is in a runway - shaped structure, and a through - hole penetrating the base (11) is opened on the base (11) facing the collection box (3).

3. A multi-layer chain-type tool magazine according to claim 1, characterized in that: The positioning component (4) includes a positioning ratchet (41), a positioning pawl (42), a positioning spring (43) and a positioning push rod (44). The positioning ratchet (41) is coaxially and fixedly installed above the chain sprocket (13). A cavity is opened inside the positioning ratchet (41). The positioning pawl (42) is located at the end of the positioning ratchet (41) close to the transmission chain (12). The positioning pawl (42) is fixedly connected to the top cover (15) by a fixing rod (45). A chute (46) is opened inside each tooth of the positioning ratchet (41). The positioning push rod (44) is slidably connected inside the chute (46). The positioning push rod (44) penetrates the positioning ratchet (41), and a positioning spring (43) is fixedly installed on the side of the positioning push rod (44) close to the positioning ratchet (41).

4. A multi-layer chain-type tool magazine according to claim 1, characterized in that: The heat dissipation component (5) includes a ratchet shaft (51), heat dissipation fins (52), a heat dissipation bevel gear (53), an oil storage tank (54), a one-way oil nozzle (55), and a liquid passage (56). The ratchet shaft (51) is fixedly installed with the positioning ratchet (41). The heat dissipation bevel gear (53) is coaxially installed on the ratchet shaft (51). The heat dissipation bevel gear (53) and the ratchet shaft (51) penetrate through the top cover (15). The ratchet shaft (51) is fixedly installed with the heat dissipation fins (52). The oil storage tank (54) is fixedly installed at the ratchet teeth of the positioning ratchet (41). The oil storage tank (54) is communicated with the liquid passage (56) through the chute (46). A suction pipe (57) is installed at the bottom of the oil storage tank (54) and extends through the positioning ratchet (41) into the cavity. A one-way inlet valve (58) is installed at one end of the suction pipe (57) close to the oil storage tank (54). A one-way oil nozzle (55) is installed on the side of the oil storage tank (54) close to the drive chain (12).

5. A multi-layer chain-type tool magazine according to claim 1, characterized in that: The cleaning component (6) includes a cleaning link (61), a cleaning bevel gear (62), a cleaning clamp (63), a cleaning lever (64), a cleaning push rod (65), a cleaning pressure rod (66), a cleaning sponge (67), a spray air bag (68), and a support sleeve rod (69). The support sleeve rod (69) is fixedly installed with the top cover (15). The cleaning link (61) is rotatably connected with the support sleeve rod (69). A cleaning bevel gear (62) is fixedly installed at one end of the cleaning link (61) close to the heat dissipation bevel gear (53). The cleaning bevel gear (62) is in meshing transmission with the heat dissipation bevel gear (53). A cleaning clamp (63) is fixedly installed at one end of the cleaning link (61) away from the cleaning bevel gear (62). A cleaning sponge (67) is fixedly installed on the inner wall of the cleaning clamp (63). A cleaning hole (611) for placing the cleaning pressure rod (66) and the cleaning push rod (65) is formed in the cleaning link (61) close to one end of the cleaning clamp (63). A cleaning lever (64) is arranged inside the cleaning hole (611). Both ends of the cleaning lever (64) are in contact with the cleaning pressure rod (66) and the cleaning push rod (65) respectively. A cleaning spring (612) is installed on the side of the cleaning lever (64) away from the cleaning pressure rod (66). A spray air bag (68) fixedly connected with the cleaning hole (611) is arranged at one end of the cleaning push rod (65) away from the cleaning lever (64).

6. The multi-layer chain-type tool magazine according to claim 5, characterized in that: The cleaning component (6) further includes a self-oiling component (7). The self-oiling component (7) includes an oil storage tank (71) and a connecting pipe (72). Both ends of the connecting pipe (72) are communicated with the spray air bag (68) and the oil storage tank (71) respectively. A one-way outlet valve (73) is arranged in the connecting pipe (72). A return spring (74) is fixedly installed at one end of the oil storage tank (71) away from the connecting pipe (72). A slider (75) slidably connected with the oil storage tank (71) is fixedly installed at the end of the return spring (74). A one-way spray valve (76) is arranged at the end of the spray air bag (68). An oil inlet (77) is arranged through between the oil storage tank (71) and the cleaning link (61).

7. The multi-layer chain-type tool magazine according to claim 5, characterized in that: The cleaning hole (611) opened at the end of the cleaning connecting rod (61) is a "U" shape that is flipped 90 degrees to the left. The cleaning fixture (63) is in a C shape. The cleaning fixture (63) is eccentrically and fixedly installed on the cleaning connecting rod (61). The cleaning sponge (67) on the cleaning fixture (63) is located at the edge of the cleaning fixture (63).

8. A multi-layer chain-type tool magazine according to claim 5, characterized in that: The circumference of one rotation of the cleaning bevel gear (62) is equal to the moving distance between adjacent tool magazines (14).

Images