CN115446637B - A quick tool changing device for a graphite processing machine tool - Google Patents

Abstract

The invention discloses a quick tool changing device for a graphite processing machine tool, which relates to the technical field of graphite processing, and includes a storage assembly, the storage assembly includes a protective shell, a turntable is mounted on the protective shell for rotation, and a knife handle installation cylinder is movably mounted on the turntable According to the needs, several handle installation cylinders are set at the circumference of the turntable, and the handle installation cylinders are also elastically connected to the turntable through a torsion spring, which is used to reset the initial position of the handle installation cylinder, and the center of the torsion spring is fixed with the handle installation cylinder Connected, the outer ring of the torsion spring is fixedly connected with the turntable, the handle of the knife is fixedly installed with a swing lever on the mounting cylinder, and the swing lever is also rotatably installed on the turntable. In the present invention, by setting the storage component and changing the diameter of the turntable, more kinds of tools can be placed; by setting the cooperation of the clamping component and the rotating component, it is only necessary to control the rotation start-stop angle of the rotating active motor to realize rapid tool change ;It can automatically change the tool holder from the tool holder installation cylinder to the spindle of the machine tool.

Description

A quick tool changing device for a graphite processing machine tool

technical field

The invention relates to the technical field of graphite processing, in particular to a quick tool changing device for a graphite processing machine tool.

Background technique

Graphite can be used to produce refractory materials, conductive materials, wear-resistant materials, lubricants, high-temperature resistant sealing materials, corrosion-resistant materials, heat insulation materials, adsorption materials, friction materials and radiation protection materials, etc. The change of rapid cooling and rapid heating can be used as a casting mold for glassware. After using graphite, the ferrous metal can be used to obtain castings with precise dimensions, smooth surface and high yield. It can be used without processing or a little processing, thus saving a lot of metal. Using graphite to make casting molds Cutting is required, and cutting tools of various specifications may be required depending on the shape of the mold.

In order to increase the replacement speed between different knives, the patent technology with the prior art publication number CN106181460B discloses a quick tool change device, which includes a fixed tool holder assembly, a movable knife holder assembly and blades, and the fixed tool holder assembly includes a fixed A knife seat and a clamping block, the clamping block is adjustably fixed on the fixed knife seat, the movable knife rest assembly includes a movable knife rest and a clamping groove, the clamping groove is fixedly arranged on the movable knife rest, and the fixed knife The seat assembly and the movable knife rest assembly are fixedly connected by clamping blocks and clamping slots, the blade is fixed on the movable knife rest, and the fixed knife rest is provided with a first mounting hole and a second mounting hole, and the clamping The main body is installed in the first installation hole, and the rotating clamping rod is installed in the second installation hole, but this prior art can only replace a few types of tools, and the replacement requires manual intervention, especially in the scene of graphite processing. Processed powder can endanger human health.

Contents of the invention

Aiming at the deficiencies in the prior art, the present invention provides a quick tool change device for graphite processing machine tools, including a storage assembly, the storage assembly includes a protective shell, a turntable is mounted on the protective shell, and a knife handle is movably mounted on the turntable. According to the needs, several handle installation cylinders are arranged at the circumference of the turntable, and the handle installation cylinders are also elastically connected to the turntable through a torsion spring, which is used to reset the initial position of the handle installation cylinder. The center of the torsion spring and the handle installation cylinder Fixed connection, the outer ring of the torsion spring is fixedly connected with the turntable, a swing rod is fixedly installed on the knife handle installation cylinder, and the swing rod is also rotated and installed on the turntable. The swing rod limit block is fixedly installed to limit the rotation angle of the swing rod, and a push block is overlapped on the swing rod, and the push block is slid and installed on the turntable through the push block slide bar, and the push block is lapped on the end of the telescopic rod that pushes the cylinder; The clamping assembly includes a clamping plate. Both ends of the clamping plate are provided with U-shaped grooves for placing the handle. There is a hydraulic channel inside the clamping plate. The inner wall of the hydraulic channel is slidingly installed with a The clamping push rod holding the knife handle, the end of the hydraulic channel away from the clamping push rod is provided with a pressure barrel, the pressure barrel is fixedly installed on the clamping plate, the inner wall of the pressure barrel is slidingly installed with a pressure piston, and the pressure piston is fixedly installed There is a passive rack, the passive rack meshes with the active rack through the intermediate gear, and the bottom end of the active rack is fixedly installed with a return spring; the rotating assembly, the rotating assembly includes a rotating barrel, and a pulling return spring is installed on the rotating barrel Bracket, pulling the return spring The bracket only rotates along the axis of the rotating barrel, and will not move along the axis of the rotating barrel. The inner wall of the rotating barrel is equipped with a lifting wave barrel, and the inner wall of the rotating barrel is rotated and installed with a limit pulley, a limit pulley Lap on the upper surface of the edge of the lifting wave bucket, the lifting wave bucket is fixedly installed with a receiving block, the receiving block is fixedly equipped with a hexagonal prism, and a pulling return spring is installed between the pulling return spring bracket and the receiving block.

Preferably, a protective cover is fixedly installed on the protective shell, and the protective cover is fixedly connected with the push cylinder. The storage assembly also includes a pulley ring fixedly installed on the turntable, and a drive motor is also fixedly installed on the protective shell. A pulley is fixedly installed on the output shaft of the driving motor, and the pulley and the pulley ring are connected through a belt drive.

Preferably, a first squeezing wheel for squeezing the belt is arranged on the side of the pulley, and a second squeezing wheel for squeezing the belt is arranged at any position of the tangent point of the belt pulley, and the The first squeeze wheel and the second squeeze wheel are rotatably mounted on different squeeze wheel brackets, and the two squeeze wheel brackets are all slidably installed on the protective cover through the squeeze wheel bracket slide bar.

Preferably, the top end of the return spring is fixedly connected to the driving rack, the bottom end of the return spring is fixedly connected to the clamping plate, the passive rack is engaged with the intermediate gear, the intermediate gear is engaged with the active rack, and the middle The gear is installed on the clamping plate through the rotation of the rack bracket, and the intermediate gear and the driving rack are slidingly installed on the rack bracket.

Preferably, a groove is provided inside the receiving block, a friction plate is slidably installed on the inner wall of the groove, and a friction booster spring for providing pressure is fixedly installed on the friction plate.

Preferably, the receiving block is rotatably connected to the top end of the mounting shaft of the clamping plate, and the end surface of the mounting shaft of the clamping plate is frictionally connected to the end surface of the friction plate.

Preferably, a rotating passive gear is slidably installed on the hexagonal prism, and the rotating passive gear is rotatably installed on the protective cover, a rotating active motor is fixedly installed on the protective cover, and a rotating active gear is fixedly installed on the output shaft of the rotating active motor. The gear meshes with the rotating passive gear.

Preferably, the inside of the knife handle installation cylinder is provided with a protrusion for clamping the knife handle, and the inner wall of the knife handle installation cylinder is made of rubber material.

Preferably, the clamping plate is fixedly installed on the clamping plate installation shaft, the clamping plate limiting frame is sleeved on the clamping plate mounting shaft, and the clamping plate limiting frame is fixedly installed on the protective cover.

Preferably, the active rack of the return spring is in contact with the lower surface of the limiting frame of the clamping plate in a compressed state.

Beneficial effect:

Compared with the prior art, the present invention provides a quick tool change device for graphite processing machine tools, which has the following beneficial effects: (1), the present invention can place more kinds of tools by setting storage components and changing the diameter of the turntable Tool; (2), the present invention, by setting the cooperation of the clamping assembly and the rotating assembly, only needs to control the rotation start-stop angle of the rotating active motor to realize rapid tool change; (3), the present invention can automatically move the handle from The toolholder mounting cylinder is replaced on the spindle of the machine tool.

Description of drawings

Fig. 1 is the structural representation I of the present invention;

Fig. 2 is the structural representation II of the present invention;

Fig. 3 is a schematic structural diagram I of the storage assembly of the present invention;

Fig. 4 is a schematic diagram II of the structure of the storage assembly of the present invention;

Fig. 5 is a structural schematic diagram III of the storage assembly of the present invention;

Fig. 6 is a schematic view IV of the structure of the storage assembly of the present invention;

Fig. 7 is a structural schematic diagram V of the storage assembly of the present invention;

Fig. 8 is a structural schematic diagram III of the present invention;

Fig. 9 is a schematic diagram of the structure at A in Fig. 8 of the present invention;

Fig. 10 is a structural schematic diagram IV of the present invention;

Fig. 11 is a schematic diagram of the structure of the clamping assembly I of the present invention;

Fig. 12 is a schematic diagram of the structure at B in Fig. 11 of the present invention;

Fig. 13 is a schematic diagram II of the structure of the clamping assembly of the present invention;

Fig. 14 is a schematic diagram of the structure at C in Fig. 13 of the present invention;

Fig. 15 is a schematic structural diagram III of the clamping assembly of the present invention;

Fig. 16 is a schematic diagram of the structure at D in Fig. 15 of the present invention;

Fig. 17 is a schematic diagram of the structure of the rotating assembly I of the present invention;

Fig. 18 is a structural schematic diagram II of the rotating assembly of the present invention;

Fig. 19 is a structural schematic diagram III of the rotating assembly of the present invention;

Figure 20 is a schematic view IV of the structure of the clamping assembly of the present invention;

Fig. 21 is a schematic diagram of the structure at E in Fig. 20 of the present invention;

Fig. 22 is a schematic diagram of the structure at F in Fig. 20 of the present invention;

Fig. 23 is a cross-sectional view of the handle mounting cylinder of the present invention;

Among the figure: 101-protective shell; 102-turntable; 103-protective cover; 104-drive motor; 105-first extrusion wheel; 106-belt wheel; 107-extrusion wheel bracket; ; 109-extrusion spring; 110-belt; 111-the second extrusion wheel; 112-push block slide bar; -torsion spring; 118-swing rod; 119-limiting block of swing rod; 201-clamping plate; 202-hydraulic channel; 203-clamping push rod; 204-pressure barrel; 205-pressure piston; ;207-intermediate gear; 208-driving rack; 209-rack bracket; 210-return spring; 211-clamping plate limit frame; 301-rotating barrel; ; 304-friction booster spring; 305-pull return spring bracket; 306-rotate driving gear; 307-rotate active motor; 308-rotate passive gear; 309-limit pulley; 310-pull return spring; 312-receiving block; 313-friction plate; 4-knife handle.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figures 1 to 7, the present invention provides a technical solution: including a storage assembly, the storage assembly includes a protective shell 101, a turntable 102 is rotatably installed on the protective shell 101, and a knife handle installation cylinder 116 is movably installed on the turntable 102, Several knife handle installation tubes 116 are arranged at the circumference of the rotating disk 102 as required, and the knife handle installation tubes 116 are elastically connected with the rotating disk 102 by a torsion spring 117 for resetting the initial position of the knife handle installation tube 116, and the center of the torsion spring 117 It is fixedly connected with the handle mounting cylinder 116, and the outer ring of the torsion spring 117 is fixedly connected with the rotating disk 102. A swing lever 118 is fixedly installed on the handle mounting cylinder 116, and the swing lever 118 is also rotatably mounted on the rotating disk 102. It should be noted that, The rotating disk 102 is provided with a groove that allows the swing rod 118 to move freely, and the rotating disk 102 is fixedly installed with a swing rod limiter 119 that limits the angle of rotation of the swing rod 118, and the swing rod 118 is overlapped with a push block 113. 113 is slidably installed on the rotating disk 102 by the push block slide bar 112, and the push block 113 overlaps the telescoping rod end of the push cylinder 114, and the protective cover 103 is fixedly installed on the protective shell 101, and the protective cover 103 is fixedly connected with the push cylinder 114, The storage assembly also includes a pulley ring 115 fixedly installed on the turntable 102, a drive motor 104 is also fixedly installed on the protective casing 101, and a pulley 106 is fixedly installed on the output shaft of the drive motor 104, and the pulley 106 and the pulley ring 115 Through the belt 110 transmission connection, the side of the pulley 106 is provided with a first squeeze wheel 105 for squeezing the belt 110, and the belt 110 is provided with a second squeeze wheel 105 for squeezing the belt 110 at any position of the tangent point of the pulley ring 115. The pinch wheel 111, the first pinch wheel 105 and the second pinch wheel 111 are rotatably mounted on different pinch wheel brackets 107, and the two pinch wheel brackets 107 are all slidably mounted on the protective cover through the pinch wheel bracket sliding rod 108. 103, the squeeze wheel bracket sliding rod 108 is surrounded by a squeeze spring 109, which is used to apply a force pointing to the center of the pulley ring 115 to the first squeeze wheel 105 and the second squeeze wheel 111, as shown in Figure 23 As shown, the inside of the knife handle installation tube 116 is provided with a projection that clamps the knife handle 4, and the inner wall of the knife handle installation tube 116 is made of rubber material to prevent the knife handle 4 from sliding relatively on the knife handle installation tube 116.

As shown in Figures 8-16 and Figures 20 and 21, the clamping assembly includes a clamping plate 201, and both ends of the clamping plate 201 are provided with U-shaped grooves for placing the handle 4, and the inside of the clamping plate 201 A hydraulic passage 202 is opened, and the inner wall of the hydraulic passage 202 is slidably installed with a clamping push rod 203 for clamping the handle 4. The end of the hydraulic passage 202 away from the clamping push rod 203 is provided with a pressure barrel 204, and the pressure barrel 204 is fixedly installed on the On the clamping plate 201, a pressure piston 205 is slidably installed on the inner wall of the pressure barrel 204, and a passive rack 206 is fixedly installed on the pressure piston 205. The bottom end of the back spring 210 is fixedly installed, the top of the back spring 210 is fixedly connected with the active rack 208, the bottom end of the back spring 210 is fixedly connected with the clamping plate 201, the passive rack 206 meshes with the intermediate gear 207, and the intermediate gear 207 is geared with the driving rack 208, and the intermediate gear 207 is installed on the clamping plate 201 through the rotation of the rack bracket 209, the intermediate gear 207 and the driving rack 208 are slidably installed on the rack bracket 209, and the clamping plate 201 is fixedly installed On the clamping plate installation shaft 303, the clamping plate limiting frame 211 is sleeved on the clamping plate mounting shaft 303, and the clamping plate limiting frame 211 is fixedly installed on the protective cover 103. It should be noted that the clamping plate The mounting shaft 303 is slidingly connected or not connected to the clamping plate limiting frame 211 , and the driving rack 208 is in contact with the lower surface of the clamping plate limiting frame 211 in a compressed state of the return spring 210 .

As shown in Fig. 17, Fig. 18, Fig. 19 and Fig. 22, the rotating assembly includes a rotating barrel 301, on which a pulling return spring support 305 is rotatably installed. It should be noted that the pulling return spring support 305 is only The axis of 301 rotates and will not move along the axis of the rotating barrel 301. The inner wall of the rotating barrel 301 is movably equipped with a lifting wave barrel 302, and the inner wall of the rotating barrel 301 is rotated and installed with a limit pulley 309. The limit pulley 309 overlaps the lifting On the upper surface of the wave barrel 302 edge, a receiving block 312 is fixedly installed on the lifting wave barrel 302, and a hexagonal column 311 is fixedly installed on the receiving block 312, and a pulling return spring 310 is installed to rotate between the pulling return spring bracket 305 and the receiving block 312 It should be noted that the two ends of the pulling return spring 310, the pulling return spring support 305 and the receiving block 312 all rotate along the axis of the rotating barrel 301, and will not move along the axis of the rotating barrel 301, and the receiving block 312 There is a groove inside, and a friction plate 313 is slidably installed on the inner wall of the groove, and a friction booster spring 304 for providing pressure is fixedly installed on the friction plate 313. It should be noted that the friction plate 313 will only move along the axis of the receiving block 312 Move, will not rotate along the axis of the receiving block 312, the receiving block 312 is rotationally connected with the top of the clamping plate installation shaft 303, and the end surface of the clamping plate installation shaft 303 is frictionally connected with the end surface of the friction plate 313, on the hexagonal column 311 Rotation passive gear 308 is slidingly installed, and rotation passive gear 308 is installed on the protective cover 103 in rotation, and the protective cover 103 is fixedly installed with rotating active motor 307, and the output shaft of rotating active motor 307 is fixedly installed with rotating active gear 306, and rotating active gear 306 is in gear mesh with rotating driven gear 308 .

Before use, the device needs to be installed on the position of the machine tool that does not interfere with the movement of the spindle. When in use, the user first installs the required tool on the tool holder 4, and then snaps the tool holder 4 to the tool holder installation cylinder 116 At this time, the direction of the handle 4 is parallel to the axis of the protective shell 101, and the rotation of the drive motor 104 is controlled according to the needs. The rotation of the drive motor 104 will drive the pulley 106 to rotate, and the rotation of the pulley 106 will drive the pulley through the belt 110 Ring 115 rotates, and pulley ring 115 rotation will drive turntable 102 to rotate, and turntable 102 rotation will drive all knife handle installation tubes 116 to rotate, as shown in Figure 1, until required knife handle 4 is rotated to protective casing 101 At the opening at the lowest end, as shown in Figure 7, start and push the cylinder 114 at this time, and the telescopic rod of the cylinder 114 will drive the push block 113 to move along the surface of the push block slide bar 112, and the push block 113 will drive the swing rod 118 to swing simultaneously , because the swing rod 118 is fixedly connected with the handle installation tube 116, so the handle installation tube 116 will rotate synchronously with the swing rod 118 until the handle installation tube 116 is rotated to the vertical state as shown in Figure 9 .

By controlling the rotating driving motor 307, the clamping plate 201 is swung to the position shown in Figure 8 to catch the handle 4. At the same time, the output shaft of the rotating driving motor 307 will drive the rotating driving gear 306 to rotate, and the rotating driving gear 306 will rotate. It will drive the rotating passive gear 308 to rotate, and the rotation of the rotating passive gear 308 will drive the rotation of the hexagonal prism 311. The rotation of the hexagonal prism 311 will drive the rotation of the receiving block 312. Block 312 is rotatably connected with clamping plate mounting shaft 303 and rotates together. At this moment, hexagonal column 311 rotates synchronously with clamping plate mounting shaft 303. At this time, because clamping plate 201 is restricted by clamping plate limiter 211, it cannot continue to rotate. Therefore, relative rotation occurs between the friction plate 313 and the mounting shaft 303 of the clamping plate, and the receiving block 312 continues to rotate, and the rotation of the receiving block 312 drives the lifting wave bucket 302 to rotate, and the rotation of the lifting wave bucket 302 will be limited by the limit pulley 309. Rotate from the position shown in Figure 17 to the position shown in Figure 19, and move along the axis of the rotating barrel 301, at this time the clamping plate installation shaft 303 will also move along the axis of the rotating barrel 301, so the clamping The holding plate 201 will move synchronously. When the holding plate 201 moves to the limit of the holding plate limit frame 211, the holding plate 201 will continue to rotate, and the receiving block 312 will be pulled back to the initial height by the pulling return spring 310 At the same time, the mounting shaft 303 of the clamping plate and the clamping plate 201 will also make the same movement, turning the handle 4 to the position of the main shaft of the machine tool. It should be noted that the main shaft of the machine tool needs to be moved to a height similar to that shown in Figure 8 The position of the height level of the knife handle installation cylinder 116, if continue to make the hexagonal prism 311 to rotate now, the clamping plate 201 can continue to rotate, so in a rotation cycle that the hexagonal prism 311 rotates one circle, the clamping plate 201 will have A quarter of the time is moving vertically without rotation. During this period, at the highest position of the clamping plate 201, as shown in FIGS. , so the active rack 208 will move downward under the restriction of the clamping plate limit frame 211, the downward movement of the active rack 208 will drive the intermediate gear 207 to rotate, and the rotation of the intermediate gear 207 will drive the passive rack 206 to move upward The upward movement of the passive rack 206 will drive the pressure piston 205 to move upward, the pressure piston 205 will move upward, and the pressure inside the pressure barrel 204 will decrease, so the pressure inside the hydraulic channel 202 will decrease, and the clamping push rod 203 will shrink in this time. In the hydraulic channel 202, when the active rack 208 is separated from the clamping plate limit frame 211, under the action of the return spring 210, the clamping push rod 203 will be squeezed out again, as shown in Figure 12 and Figure 14 As shown, only when the active rack 208 is restricted by the clamping plate limit frame 211, that is, when the position is shown in Figure 16, the clamping push rod 203 is retracted into the hydraulic channel 202, and other positions are clamped. Hold the push rod 203 and all can stretch out and clamp the handle of a knife 4, prevent the handle of a knife 4 from falling off from the clamping plate 201.

After the belt 110 works for a long time, there may be a problem of slack, because the set first squeeze wheel 105 and the second squeeze wheel 111 will squeeze the belt 110 and the contact on the pulley 106 and the pulley ring 115 will be affected respectively. Force point, as shown in FIG. 4 , so the right side of the belt 110 is always in a tight state, thereby preventing the phenomenon of slippage between the belt 110 and the pulley 106 and the pulley ring 115 .

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (8)

1. A quick tool changer for a graphite processing machine tool, characterized in that: it comprises a storage assembly, and the storage assembly includes a protective shell (101), a rotating disk (102) is installed on the protective casing (101), and the rotating disk (102) A knife handle installation cylinder (116) is installed on the top movable and a knife handle installation cylinder (116) is also elastically connected with the rotating disk (102) by a torsion spring (117), and a knife handle installation cylinder (116) is fixedly installed with a swing lever (118). , a push block (113) is lapped on the swing rod (118), and the push block (113) is slidably installed on the turntable (102) through the push block slide bar (112), and the push block (113) is lapped on the push cylinder (114 ) at the end of the telescoping rod; Clamping assembly, the clamping assembly includes a clamping plate (201), both ends of the clamping plate (201) are provided with a U-shaped groove for placing the knife handle (4), and the inside of the clamping plate (201) is provided with There is a hydraulic passage (202), and the inner wall of the hydraulic passage (202) is slidably installed with a clamping push rod (203) for clamping the handle (4), and the hydraulic passage (202) is away from the clamping push rod (203) One end is provided with a pressure barrel (204), the pressure barrel (204) is fixedly installed on the clamping plate (201), the inner wall of the pressure barrel (204) is slidingly installed with a pressure piston (205), and the pressure piston (205) is fixedly installed with a The passive rack (206), the passive rack (206) is meshed with the active rack (208) through the intermediate gear (207), and the bottom end of the active rack (208) is fixedly equipped with a return spring (210); Rotating assembly, the rotating assembly includes a rotating bucket (301), a pulling return spring support (305) is installed on the rotating bucket (301), and a lifting wave bucket (302) is installed on the inner wall of the rotating bucket (301). The limit pulley (309) is rotated and installed on the inner wall of (301), and the limit pulley (309) is lapped on the upper surface of the lifting wave barrel (302) edge, and the lifting wave barrel (302) is fixedly installed with a receiving block ( 312), a hexagonal column (311) is fixedly installed on the receiving block (312), and a pulling return spring (310) is installed between the pulling return spring support (305) and the receiving block (312), and the receiving block (312 ) is provided with a groove inside, and a friction plate (313) is slidably installed on the inner wall of the groove, and a friction booster spring (304) for providing pressure is fixedly installed on the friction plate (313). The top of the clamping plate installation shaft (303) is rotationally connected, and the end face of the clamping plate mounting shaft (303) is frictionally connected to the end face of the friction plate (313), and the clamping plate mounting shaft (303) is sleeved with a clamping plate limit Position frame (211), clamping plate limit frame (211) is fixedly installed on the protective cover (103), and described return spring (210) drives rack (208) and clamping plate limit frame ( 211) in contact with the lower surface. 2. The quick tool change device of a graphite processing machine tool according to claim 1, characterized in that: the protective cover (103) is fixedly installed on the protective shell (101), and the protective cover (103) is connected with the push cylinder ( 114) Fixed connection. 3. The quick tool change device of a graphite processing machine tool according to claim 2, characterized in that: a driving motor (104) is also fixedly installed on the protective casing (101), and the output shaft of the driving motor (104) A pulley (106) is fixedly installed on the top, and the pulley (106) is connected with the pulley ring (115) through a belt (110) transmission. 4. The quick tool change device of a graphite processing machine tool according to claim 3, characterized in that: a first squeeze wheel (105) for squeezing the belt (110) is arranged on the side of the pulley (106) ), the belt (110) is provided with a second squeeze wheel (111) for squeezing the belt (110) at any position of the tangent point of the pulley ring (115), and the first squeeze wheel (105) and the second squeeze wheel (111) are rotated and installed on different squeeze wheel brackets (107), and the two squeeze wheel brackets (107) are all slidably installed on the protective cover (103) by the squeeze wheel bracket slide bar (108). )superior. 5. The quick tool change device of a graphite processing machine tool according to claim 4, characterized in that: the top of the return spring (210) is fixedly connected to the active rack (208), and the bottom of the return spring (210) end is fixedly connected with the clamping plate (201), the passive rack (206) meshes with the intermediate gear (207), the intermediate gear (207) meshes with the driving rack (208), and the intermediate gear (207) passes through The rack support (209) is rotatably mounted on the clamping plate (201), and the intermediate gear (207) and the driving rack (208) are slidably mounted on the rack support (209). 6. A quick tool change device for a graphite processing machine tool according to claim 5, characterized in that: a rotating driven gear (308) is slidably installed on the hexagonal prism (311), and the rotating driven gear (308) is installed in rotation On the protective cover (103), the protective cover (103) is fixedly equipped with a rotating driving motor (307), and the output shaft of the rotating driving motor (307) is fixedly equipped with a rotating driving gear (306), and the rotating driving gear (306) and The rotating passive gear (308) is gear meshed. 7. The quick tool change device of a graphite processing machine tool according to claim 6, characterized in that: the interior of the knife handle installation cylinder (116) is provided with a protrusion that engages the knife handle (4), and the knife The inwall of handle installation cylinder (116) is rubber material. 8. The quick tool change device of a graphite processing machine tool according to claim 7, characterized in that: the clamping plate (201) is fixedly installed on the clamping plate installation shaft (303).

Images