Automatic connectable and removable rotary cutting apparatus

Abstract

An automatic connectable and removable rotary cutting apparatus (100), comprising a base (10), a driving motor (15) fixedly mounted on the base (10), a hollow cylindrical air cylinder body (20), a piston body (25), an axial positioning disc (30), a shaft cylinder cover (35), a motor connecting shaft (40), a clamping key (45), a cutter connecting shaft (50), a C-shaped clamping spring (55) and a cutter assembly (60); a motor connecting hole (41) is formed in the rear end of the motor connecting shaft (40), the motor connecting shaft (40) is sequentially rotatably inserted into a rotary insertion hole (351) of the shaft cylinder cover (35) and a piston shaft cylinder (252); the cutter connecting shaft (50) is provided with a front insertion part (52) fitting with a front insertion hole (422) at the front side of a middle connecting spline (51), and the cutter connecting shaft (50) is inserted into a connecting insertion hole (42); the middle connecting spline (51) fits with and is connected to a middle connecting spline groove (421), the front insertion part (52) fits with and is inserted into the front insertion hole (422), and the clamping spring (55) is clamped in a first clamping spring groove (4221) and a second clamping spring groove (521); the front end of the cutter connecting shaft (50) is fixedly inserted into a cutter head mounting hole (611). The present apparatus, by means of cooperation of the clamping spring (55), the first clamping spring groove (4221) and the second clamping spring groove (521), can achieve automatic forward and backward connection and removal, with easy and rapid operation and greatly improved efficiency of assembly and disassembly.

Description

Automatic plug-in and disassembly rotary cutter device Technical Field

[0001] The present invention relates to the field of machinery, and in particular to an automatic plug-in, assembling and disassembling rotary cutter device. Background Art

[0002] Currently, plastic pellets are typically produced by extruding molten plastic into a mold with a die hole. A sealed cutting chamber is then placed at the extrusion end of the plastic, and coolant is poured into the cutting chamber. As the plastic is extruded, it is cooled and solidified by the coolant. Simultaneously, a cutting tool, placed in the coolant against the extrusion end of the mold, cuts the extruded plastic. The cut particles are then discharged from the cutting chamber along with the coolant and separated. However, when the tool cuts the plastic, the plastic may not solidify sufficiently and become entangled with the tool, causing a blockage. In this case, the tool must be disassembled, the blocked plastic removed, and then the tool installed. Traditional tools are fixed to the output shaft of the drive motor using screws, etc. Installation and disassembly requires manual removal of the tool, clearing the blocked plastic, and then manual installation. This operation is complex and difficult to automate. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatically plug-in and detachable rotary cutter device to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] Provided is an automatically plug-in and detachable rotary cutter device, comprising a base, a driving motor fixedly mounted on the base, a hollow cylindrical cylinder body, a piston body, an axial positioning disk, a shaft cover, a motor connecting shaft, a key, a tool connecting shaft, a C-shaped retaining ring, a tool assembly sliding bracket and a front and rear driving module, wherein the front wall of the driving motor is provided with a front end cover with an end cover shaft hole, the output shaft of the driving motor passes forward through the end cover shaft hole, and the outer side wall of the front part of the output shaft of the driving motor is provided with a plurality of inner key grooves; the rear end of the cylinder body is sealed and fixedly connected to the front end cover of the driving motor; the piston body includes a sealing ring and a middle The piston shaft cylinder is hollow, the inner side wall of the sealing ring is fixedly sleeved on the middle part of the outer side wall of the piston shaft cylinder, the rear end of the piston shaft cylinder can slide back and forth and is sealed and inserted in the end cover shaft hole, a rear sealing air chamber is formed between the front end cover, the cylinder body, the sealing ring and the piston shaft cylinder, the cylinder body is provided with a rear air hole communicating with the rear sealing air chamber; a piston shaft fixing hole is provided in the center of the axial positioning disk, the front end of the piston shaft cylinder is sealingly fixed in the piston shaft fixing hole, the rear wall of the axial positioning disk is sealed in connection with the front end of the cylinder body, the rear wall of the axial positioning disk, the cylinder body, the sealing ring and A front sealing air chamber is formed between the piston and the shaft cylinder, and a front air hole communicating with the front sealing air chamber is provided on the cylinder body, and the axial positioning disk is fixedly mounted on the driving motor or the base; a shaft cylinder cover rotating socket is provided at the center of the shaft cylinder cover, and the shaft cylinder cover fixing cover is connected to the front end of the piston and the shaft cylinder; a motor connecting hole is provided at the rear end of the motor connecting shaft, an external key groove is provided on the inner side wall of the motor connecting hole, a connecting socket is provided at the front end of the motor connecting shaft, a middle spline groove is provided on the inner side wall of the rear end of the connecting socket, and a front connecting hole is provided on the front side of the middle spline groove of the connecting socket. The inner wall of the front plug-in hole is provided with a first retaining ring groove, the motor connecting shaft is rotatably inserted in the shaft cylinder cover rotating socket and the piston shaft cylinder in sequence, and the output shaft of the drive motor is inserted in the motor connecting hole, and the inner keyway is opposite to the corresponding outer keyway; the card key is installed between the outer keyway and the inner keyway, the card key is fixedly connected to the inner keyway, the thickness of the card key is greater than the height of the inner keyway and less than or equal to the sum of the heights of the inner keyway and the outer keyway, and the front and rear length of the card key is less than the length of the outer keyway; the outer side wall of the rear end of the tool connecting shaft is provided with a center spline, The tool connecting shaft is provided with a front plug-in portion matching the front plug-in hole on the front side of the center spline, the tool connecting shaft is inserted into the connecting plug hole, the center spline is matched and connected with the center spline groove, the front plug-in portion is matched and plugged with the front plug-in hole, and the outer side wall of the front plug-in portion is provided with a second retaining spring groove at the front side of the center spline facing the first retaining spring groove; the retaining spring is retained in the first retaining spring groove and the second retaining spring groove;The tool assembly includes a cutter disc and a plurality of blades evenly mounted around the cutter disc. A cutter disc mounting hole is defined in the center of the cutter disc, and the front end of the tool connecting shaft is fixedly inserted into the cutter disc mounting hole. The base is connected to the sliding bracket for forward and backward sliding. The forward and backward drive module is mounted on the sliding bracket or outside the sliding bracket to drive the base to move forward and backward along the sliding bracket.

[0006] Preferably, the automatic plug-in and detachable rotary cutter device also includes a first bearing, a second bearing and a third bearing. The outer ring of the first bearing is embedded in the rotating socket of the shaft cylinder cover, and the outer rings of the second bearing and the third bearing are embedded in the inner wall of the piston shaft cylinder in turn. The motor connecting shaft is inserted through the inner ring of the first bearing, the inner ring of the second bearing and the inner ring of the third bearing in turn.

[0007] Preferably, the automatic plug-in and detachable rotary cutter device further includes a displacement sensor, which is mounted on the base or the drive motor and is used to detect the front-to-back axial displacement of the cutter disc.

[0008] Preferably, the automatic plug-in and detachable rotary cutter device further comprises a front sleeve, which is fixedly sleeved outside the motor connecting shaft on the front side of the shaft cover.

[0009] Preferably, the automatic plug-in and detachable rotary cutter device also includes a dust cover, which includes a mounting ring and a cover body protruding forward from the periphery of the center hole of the mounting ring, a cover body socket is opened in the middle of the cover body, the mounting ring is fixed to the front wall of the axial positioning disk, and the front end of the motor connecting shaft is inserted through the cover body socket.

[0010] Preferably, a plurality of tool mounting blocks protruding radially outward from the periphery of the cutter disc are provided, and a side wall of the tool mounting block is provided with a tool mounting inclined groove extending obliquely from the rear two toward another adjacent tool mounting block, the rear end of the blade is fixedly mounted on the tool mounting inclined groove, and the front end of the blade extends forward from the tool mounting block.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The automatic plug-in and detachable rotary cutter device of the present invention can realize front-to-back plug-in automatic assembly and disassembly through the cooperation of the retaining spring, the first retaining spring groove and the second retaining spring groove. The operation is simple and fast, and the assembly and disassembly efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG1 is a structural diagram of an automatic plug-in and detachable rotary cutter device according to the present invention from one angle;

[0014] FIG2 is a structural diagram of the automatic plug-in and detachable rotary cutter device of the present invention from another angle;

[0015] FIG3 is a cross-sectional view of the automatic plug-in and detachable rotary cutter device of the present invention;

[0016] FIG4 is an enlarged view of portion A in FIG3 .

[0017] FIG5 is a partial exploded view of the automatic plug-in and detachable rotary cutter device of the present invention at one angle;

[0018] FIG6 is a partial exploded view of the automatic plug-in and detachable rotary cutter device of the present invention from another angle.

[0019] FIG7 is a structural diagram of an application embodiment of the automatic plug-in and detachable rotary cutter device of the present invention.

[0020] FIG8 is a partial structural diagram of an application embodiment of the automatic plug-in and detachable rotary cutter device of the present invention. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] 1 to 8 , the automatic plug-in and detachable rotary cutter device 100 of the present invention includes a base 10, a drive motor 15 fixedly mounted on the base 10, a hollow cylindrical cylinder body 20, a piston body 25, an axial positioning disk 30, a shaft cover 35, a motor connecting shaft 40, a latch key 45, a cutter connecting shaft 50, a C-shaped retaining spring 55, and a cutter assembly 60.

[0023] The front wall of the drive motor 15 is provided with a front cover 151 having an end cover shaft hole 1511. The output shaft 152 of the drive motor 15 extends forward through the end cover shaft hole 1511. The outer side wall of the front portion of the output shaft 152 of the drive motor 15 is provided with a plurality of internal keyways 1521. The rear end of the cylinder block 20 is sealed and fixedly connected to the front cover 151 of the drive motor 15.

[0024] The piston body 25 includes a sealing ring 251 and a hollow cylindrical piston shaft cylinder 252. The inner sidewall of the sealing ring 251 is fixedly mounted on the middle portion of the outer sidewall of the piston shaft cylinder 252. The rear end of the piston shaft cylinder 252 is sealed and inserted into the end cover shaft hole 1511 so as to be able to slide back and forth. A rear sealed air chamber is formed between the front end cover 151, the cylinder body 20, the sealing ring 251, and the piston shaft cylinder 252. The cylinder body 20 is provided with a rear air hole 201 that communicates with the rear sealed air chamber.

[0025] The center of the axial positioning disc 30 is provided with a piston shaft fixing hole 301, into which the front end of the piston shaft barrel 252 is sealed and fixed. The rear wall of the axial positioning disc 30 is sealedly connected to the front end of the cylinder body 20. A front sealed air chamber is formed between the rear wall of the axial positioning disc 30, the cylinder body 20, the sealing ring 251, and the piston shaft barrel 252. The cylinder body 20 is provided with a front air hole 202 that communicates with the front sealed air chamber. The axial positioning disc 30 is fixedly mounted on the drive motor 15 or the base 10. In this embodiment, the upper and lower ends of the axial positioning disc 30 are fixedly mounted on the drive motor 15 and the base 10, respectively.

[0026] A shaft cylinder cover rotation socket 351 is defined at the center of the shaft cylinder cover 35 , and the shaft cylinder cover 35 is fixedly connected to the front end of the piston shaft cylinder 252 .

[0027] The rear end of the motor connecting shaft 40 is provided with a motor connecting hole 41, the inner side wall of the motor connecting hole 41 is provided with an external keyway 411, the front end of the motor connecting shaft 40 is provided with a connecting socket 42, the inner side wall of the rear end of the connecting socket 42 is provided with a middle spline groove 421, the connecting socket 42 is provided with a circular front plug hole 422 on the front side of the middle spline groove 421, the inner side wall of the front plug hole 422 is provided with a first retaining ring groove 4221, and the motor connecting shaft 40 is rotated and inserted into the shaft cylinder cover rotating socket 351 and the The piston shaft cylinder 252 is provided with the output shaft 152 of the driving motor 15 inserted into the motor connecting hole 41, and the inner key groove 1521 is opposite to the corresponding outer key groove 411; the card key 45 is installed between the outer key groove 411 and the inner key groove 1521, and the card key 45 is fixedly connected to the inner key groove 1521. The thickness of the card key 45 is greater than the height of the inner key groove 1521 and is less than or equal to the sum of the heights of the inner key groove 1521 and the outer key groove 411, and the front-to-back length of the card key 45 is less than the length of the outer key groove 411.

[0028] The outer wall of the rear end of the tool connecting shaft 50 is provided with a central spline 51. A front plug portion 52 is provided in front of the central spline 51, which mates with the front plug hole 422. The tool connecting shaft 50 is inserted into the connecting plug hole 42, with the central spline 51 mating with the central spline groove 421, and the front plug portion 52 matingly plugging into the front plug hole 422. A second retaining spring groove 521 is defined on the outer wall of the front plug portion 52, in front of the central spline 51, directly opposite the first retaining spring groove 4221. The retaining spring 55 is retained in both the first retaining spring groove 4221 and the second retaining spring groove 521. In this embodiment, both the first retaining spring groove 4221 and the second retaining spring groove 521 are annular.

[0029] The tool assembly 60 includes a cutter disc 61 and a plurality of blades 62 evenly installed around the cutter disc 61 . A cutter disc mounting hole 611 is opened in the middle of the cutter disc 61 , and the front end of the tool connecting shaft 50 is fixedly inserted into the cutter disc mounting hole 611 .

[0030] Preferably, the automatically plug-in / disassembled rotary cutter device 100 further includes a first bearing 65, a second bearing 70, a third bearing 75, a displacement sensor 80, a front sleeve 85, and a dust cover 90. The outer ring of the first bearing 65 is embedded in the shaft cover rotation socket 351. The outer rings of the second bearing 70 and the third bearing 75 are sequentially embedded in the inner wall of the piston shaft. The motor connecting shaft 40 is sequentially inserted through the inner rings of the first bearing 65, the second bearing 70, and the third bearing 75. The displacement sensor 80 is mounted on the base or the drive motor to detect the front-to-back axial displacement of the cutter disc 61. In this embodiment, the displacement sensor 80 is mounted on the drive motor. The front sleeve 85 is securely mounted outside the motor connecting shaft 40 on the front side of the shaft cover 35. The dust cover 90 includes a mounting ring 91 and a cover body 92 protruding forward from the periphery of the center hole of the mounting ring 91. A cover body socket 921 is opened in the middle of the cover body 92. The mounting ring 91 is fixed to the front wall of the axial positioning disk 30, and the front end of the motor connecting shaft 40 is inserted through the cover body socket 921.

[0031] Specifically, a plurality of tool mounting blocks 612 protrude radially outward from the periphery of the cutter disc 61, and a side wall of the tool mounting block 612 is provided with a tool mounting inclined groove 6121 extending obliquely from the rear two toward another adjacent and opposite tool mounting block 612, and the rear end of the blade 62 is fixedly mounted on the tool mounting inclined groove 6121, and the front end of the blade 62 extends forward from the tool mounting block 612.

[0032] Preferably, the automatic insertion and removal rotary blade device 100 further includes a sliding bracket 70 and a front-to-back drive module (not shown). The base 10 is slidably connected to the sliding bracket 70, and the front-to-back drive module is used to drive the base 10 to move forward and backward along the sliding bracket 70. The front-to-back drive module can be mounted on the sliding bracket 70 or outside the sliding bracket 70. Specifically, the sliding bracket 70 is provided with front and back slide rails 71, and the bottom of the base 10 is provided with front and back sliders 11, which are slidably connected to the front and back slide rails 71.

[0033] When the automatic plug-in and detachable rotary cutter device 100 of the present invention is in use, the axial positioning disk 30 is sealed with the rear end of the cutting sleeve 210 to form a cutting chamber, and an air source is injected into the rear air hole 201 and the front air hole 202, and the air pressure difference between the rear sealed air chamber and the front sealed air chamber is adjusted, so that the blade 62 of the tool assembly 60 is pressed against the rear end face of the plastic pellet output mold 220, and the molten plastic is introduced into the plastic pellet output mold 220 through the plastic input mold 230, and is extruded from the mold hole 221 of the plastic pellet output mold 220. At the same time, coolant is injected into the coolant inlet 211 of the cutting chamber, and the plastic is cooled and solidified while being extruded from the mold hole 221. Then the drive motor is started and the cutter disc 61 is driven to rotate. The cooled plastic pellets are cut off from the plastic pellet output mold 220 by the blade 62, and then discharged outward through the coolant outlet 212 together with the coolant. Finally, the plastic pellets are separated by the separation device. When the cutter disc 61 is clogged by the plastic wrap, the front and rear drive modules are started to move the base 10 backward along the front and rear slide rails 71. The retaining spring 55 expands radially outward under the backward pulling force of the motor connecting shaft 40 and deforms, and then disengages from the second retaining spring groove 521, so that the motor connecting shaft 40 and the tool connecting shaft 50 are smoothly separated, and the retaining spring 55 restores its shape. The outer edge of the retaining spring 55 is locked in the first retaining spring groove 4221, and the inner edge of the retaining spring 55 protrudes radially inwardly from the first retaining spring groove 4221. Then, the wrapped and blocked plastic is peeled off and cleared from the tool assembly 60. After the blocked plastic is cleared, the front and rear drive modules are started again to move the base 10 forward again, and the tool connecting shaft 50 pushes the retaining spring 55, causing the retaining spring 55 to deform and then the tool connecting shaft 50 is reinserted into the connecting hole 42, and the retaining spring 55 is re-locked between the first retaining spring groove 4221 and the second retaining spring groove 521.

[0034] The automatic plug-in and detachable rotary cutter device of the present invention can realize front and rear plug-in and detachable assembly and disassembly through the structural cooperation of the retaining spring, the first retaining spring groove and the second retaining spring groove. The operation is simple and fast, and the assembly and disassembly efficiency is greatly improved.

[0035] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An automatic plug-in and detachable rotary cutter device, characterized in that: include: Base; A drive motor is fixedly mounted on the base, wherein a front cover with an end cover shaft hole is provided on the front wall of the drive motor, an output shaft of the drive motor passes forward through the end cover shaft hole, and a plurality of inner key grooves are provided on the outer side wall of the front part of the output shaft of the drive motor; A hollow cylindrical cylinder body, the rear end of which is sealed and fixedly connected to the front end cover of the drive motor; A piston body, the piston body comprising a sealing ring and a hollow cylindrical piston shaft cylinder, the inner side wall of the sealing ring is fixedly sleeved on the middle part of the outer side wall of the piston shaft cylinder, the rear end of the piston shaft cylinder can slide forward and backward in a sealing manner and is inserted into the end cover shaft hole, a rear sealing air chamber is formed between the front end cover, the cylinder body, the sealing ring and the piston shaft cylinder, and the cylinder body is provided with a rear air hole communicating with the rear sealing air chamber; An axial positioning disk, wherein a piston shaft fixing hole is provided at the center of the axial positioning disk, the front end of the piston shaft cylinder is seal-fixedly inserted into the piston shaft fixing hole, the rear wall of the axial positioning disk is seal-connected with the front end of the cylinder body, a front sealing air chamber is formed between the rear wall of the axial positioning disk, the cylinder body, the sealing ring and the piston shaft cylinder, the cylinder body is provided with a front air hole communicating with the front sealing air chamber, and the axial positioning disk is fixedly mounted on the drive motor or the base; A shaft cylinder cover, wherein a shaft cylinder cover rotation socket is provided at the center of the shaft cylinder cover, and the shaft cylinder cover fixing cover is connected to the front end of the piston shaft cylinder; A motor connecting shaft, wherein a motor connecting hole is provided at the rear end of the motor connecting shaft, an outer keyway is provided on the inner side wall of the motor connecting hole, a connecting socket is provided at the front end of the motor connecting shaft, a middle spline groove is provided on the inner side wall of the rear end of the connecting socket, a front plug-in hole is provided at the front side of the middle spline groove, a first retaining ring groove is provided on the inner side wall of the front plug-in hole, the motor connecting shaft is rotatably inserted in the rotating socket of the shaft cylinder cover and the piston shaft cylinder in sequence, and the output shaft of the drive motor is inserted in the motor connecting hole, and the inner keyway is directly opposite to the corresponding outer keyway; A card key, the card key is installed between the outer key groove and the inner key groove, the card key is fixedly connected to the inner key groove, the thickness of the card key is greater than the height of the inner key groove and less than or equal to the sum of the heights of the inner key groove and the outer key groove, and the front-to-back length of the card key is less than the length of the outer key groove; A tool connecting shaft, wherein a central spline is arranged on the outer side wall of the rear end of the tool connecting shaft, a front plug-in portion matching the front plug-in hole is arranged on the front side of the central spline of the tool connecting shaft, the tool connecting shaft is inserted into the connecting plug hole, the central spline is matched and connected with the central spline groove, the front plug-in portion is matched and plugged with the front plug-in hole, and a second retaining spring groove is opened on the outer side wall of the front retaining portion at the front side of the central spline facing the first retaining spring groove; A C-shaped retaining ring, wherein the retaining ring is disposed in the first retaining ring groove and the second retaining ring groove; A tool assembly, the tool assembly comprising a tool disc and a plurality of blades evenly mounted on the periphery of the tool disc, a tool disc mounting hole is opened in the middle of the tool disc, and a front end of the tool connecting shaft is fixedly inserted into the tool disc mounting hole; A sliding bracket, the base is connected to the sliding bracket in a forward and backward sliding manner; as well as A front-rear driving module is installed on the sliding bracket or outside the sliding bracket, and is used to drive the base to move forward and backward along the sliding bracket.

2. The automatic plug-in and detachable rotary cutter device according to claim 1, characterized in that: It also includes a first bearing, a second bearing and a third bearing. The outer ring of the first bearing is embedded in the rotating socket of the shaft cylinder cover, the outer rings of the second bearing and the third bearing are embedded in the inner wall of the piston shaft cylinder in turn, and the motor connecting shaft is inserted through the inner ring of the first bearing, the inner ring of the second bearing and the inner ring of the third bearing in turn.

3. The automatic plug-in and detachable rotary cutter device according to claim 1, characterized in that: It also includes a displacement sensor, which is installed on the base or the drive motor and is used to detect the front-rear axial displacement of the cutter disc.

4. The automatic plug-in and detachable rotary cutter device according to claim 1, characterized in that: It also includes a front sleeve, which is fixedly sleeved outside the motor connecting shaft on the front side of the shaft cover.

5. The automatic plug-in and detachable rotary cutter device according to claim 1, characterized in that: It also includes a dust cover, which includes a mounting ring and a cover body protruding forward from the periphery of the center hole of the mounting ring, a cover body plug hole is opened in the middle of the cover body, the mounting ring is fixed to the front wall of the axial positioning disk, and the front end of the motor connecting shaft is inserted through the cover body plug hole.

6. The automatic plug-in and detachable rotary cutter device according to claim 1, characterized in that: A plurality of tool mounting blocks protrude radially outward from the periphery of the cutter disc, and a side wall of the tool mounting block is provided with a tool mounting inclined groove extending obliquely from the rear two toward another adjacent tool mounting block, the rear end of the blade is fixedly mounted on the tool mounting inclined groove, and the front end of the blade protrudes forward from the tool mounting block.

Images