CN211639264U

CN211639264U - Grinding device for inner hole of charging barrel

Info

Publication number: CN211639264U
Application number: CN201921769461.XU
Authority: CN
Inventors: 胡海波
Original assignee: Zhejiang Bohai Machinery Co ltd
Current assignee: Zhejiang Bohai Machinery Co ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-10-09
Anticipated expiration: 2029-10-21

Abstract

The utility model provides a feed cylinder hole grinding device, comprises a workbench, the fixed feed cylinder of mount is passed through on the workstation the left side, workstation the installation ram mechanism on the right, fixed mounting motor above the ram mechanism, the left output shaft head fixed mounting tool bit of motor, the tool bit is just to the hole of feed cylinder, the tool bit includes the arbor, the shrink portion installation cutter unit of arbor, cutter unit includes the annular frame, the radial processing through-hole of annular frame, through-hole quantity is 3 at least, the diameter shrink of through-hole department near annular frame outer wall diminishes, installation branch in the through-hole, the branch top is passed the through-hole, branch top fixed mounting cutter. When polishing the inner hole of the charging barrel, the charging barrel is fixed, the tool bit performs rotary motion and axial linear motion relative to the charging barrel, and the rotary tool bit extends into the inner hole of the charging barrel to polish. The device is novel in structure and high in machining precision.

Description

Grinding device for inner hole of charging barrel

Technical Field

The invention relates to a grinding device for an inner hole of a charging barrel.

Background

Barrels are commonly used in plastic machinery, and the advancing and mixing power of the plastic during the plasticizing process is derived from the relative rotation of a screw and the barrel. The feed cylinder need polish its hole in the manufacturing process, makes the feed cylinder inner wall smooth, satisfies the user demand, is polishing the feed cylinder hole at present, and the cutter that will polish is mainly fixed, through the rotation cooperation linear motion of feed cylinder, lets the cutter stretch into the feed cylinder hole and polishes, and the hole of some feed cylinders has eccentric structure, is difficult to guarantee the concentric cooperation of feed cylinder and cutter like this at the in-process of polishing, has influenced the machining precision of feed cylinder hole.

Disclosure of Invention

Aiming at the defects in the problems, the invention provides a grinding device for an inner hole of a charging barrel.

In order to achieve the purpose, the invention provides a grinding device for an inner hole of a charging barrel, which comprises a workbench, wherein the charging barrel is fixed on the left side of the workbench through a fixing frame, a ram mechanism is installed on the right side of the workbench, a motor is fixedly installed on the ram mechanism, and a tool bit is fixedly installed at the head of an output shaft on the left side of the motor;

the tool bit is just right the hole of feed cylinder, the tool bit includes the arbor, the shrink portion installation cutter unit spare of arbor, cutter unit spare includes the annular frame, the radial processing through-hole of annular frame, through-hole quantity is 3 at least, the through-hole is being close to the shrink of annular frame outer wall department diameter diminishes, installation branch in the through-hole, the branch top is passed the through-hole, branch top fixed mounting cutter.

As a further improvement of the invention, the radial section of the contraction part is hexagonal, and the axial inner hole of the annular frame is matched with the contraction part.

As a further improvement of the invention, the left side surface of the cutter shaft is fixed with a sealing cover through a bolt.

As a further improvement of the invention, the through hole is internally threaded near the inner wall of the annular frame.

As a further improvement of the invention, a set screw is arranged below the supporting rod, and the external thread of the set screw is matched with the internal thread.

As a further improvement of the invention, a spring is arranged between the bottom plate of the supporting rod and the reducing part of the through hole.

As a further improvement of the invention, the number of the cutter assemblies is two, and a gasket is arranged between the two cutter assemblies.

The invention has the beneficial effects that:

1. the device changes the traditional processing mode, the charging barrel is fixed, the cutter head is advanced to rotate and move in a linear mode to extend into an inner hole of the charging barrel for polishing, the positioning is convenient and accurate, and the concentricity of the inner hole of the charging barrel and the cutter head is high;

2. through setting up the telescopic cutter on the tool bit, when there is eccentric structure in the feed cylinder hole, also enable the cutter and hug closely the feed cylinder hole and polish, still set up two sets of cutters simultaneously on the tool bit, carry out rough machining and finish machining respectively, effectively improve the machining precision.

Drawings

FIG. 1 is a front view of a grinding device for inner holes of a charging barrel according to the present invention;

FIG. 2 is an enlarged view of the cutting head of component 4;

FIG. 3 is a schematic view of the construction of the cutter assembly of component 42;

fig. 4 is an enlarged view of a portion a in fig. 3.

In the figure: 1. a work table; 2. a fixed mount; 3. a charging barrel; 4. a cutter head; 41. a cutter shaft; 411. a constriction; 42. a cutter assembly; 421. an annular frame; 422. a through hole; 4221. an internal thread; 423. tightening the screw; 424. a strut; 425. a spring; 426. a cutter; 43. a gasket; 44. sealing the cover; 5. a motor; 51. an output shaft; 6. ram mechanism.

Detailed Description

As shown in fig. 1, the grinding device for the inner hole of the charging barrel comprises a workbench 1, wherein the charging barrel 3 is fixed on the left side of the workbench 1 through a fixing frame 2, a ram mechanism 6 is installed on the right side of the workbench 1, a motor 5 is fixedly installed on the ram mechanism 6, and a tool bit 4 is fixedly installed at the head of an output shaft 51 on the left side of the motor 5; the cutter head 4 is opposite to an inner hole of the charging barrel 3, the cutter head 4 comprises a cutter shaft 41, a sealing cover 44 is fixed on the left side surface of the cutter shaft 41 through bolts, a cutter assembly 42 is installed on a contraction part 411 of the cutter shaft 41, the radial section of the contraction part 411 is hexagonal, the axial inner hole of the annular frame 421 is matched with the contraction part 411, the cutter assembly 42 comprises an annular frame 421, through holes 422 are radially processed on the annular frame 421, the number of the through holes 422 is at least 3, the diameter of the through holes 422 close to the outer wall of the annular frame 421 is contracted and reduced, supporting rods 424 are installed in the through holes 422, the tops of the supporting rods 424 penetrate through the through holes 422, cutters 426 are fixedly installed at the tops of the supporting rods 424, springs 425 are installed between the bottom plates of the supporting rods 424 and the reducing parts of the through holes 422, internal threads 4221 are processed at the positions of the through holes 422 close to the inner wall of, the number of the cutter assemblies 42 may be plural.

The device changes the traditional processing mode, the charging barrel is fixed, the cutter head is advanced to rotate and move in a linear mode to extend into an inner hole of the charging barrel for polishing, the positioning is convenient and accurate, and the concentricity of the inner hole of the charging barrel and the cutter head is high; through setting up the telescopic cutter on the tool bit, when there is the tapering in feed cylinder hole, also enable the cutter and hug closely the feed cylinder hole and polish, still set up two sets of cutters simultaneously on the tool bit, carry out rough machining and finish machining respectively, effectively improve the machining precision.

In particular use, the invention will be described with reference to the accompanying drawings for the convenience of understanding;

firstly, a material cylinder is fixed on a workbench, a cutter head aims at the axle center of an inner hole of the material cylinder, the cutter head performs rotary motion and axial linear motion relative to the material cylinder, a cutter shaft of the cutter head is connected with an output shaft of a motor, the rotating speed of the motor is controlled, then the linear motion of the cutter head is driven by a ram mechanism, the concentricity of the inner hole of the material cylinder and the cutter head is adjusted before polishing, the central axis of the inner hole of the material cylinder is ensured to be coincident with the central axis of the cutter head, then the motor and the ram mechanism work simultaneously, the rotary cutter head extends into the inner hole of the material cylinder, a cutter assembly is installed at the left part of the cutter head, a cutter on the cutter assembly contacts the inner hole of the material cylinder for polishing, the cutter with the elastic contraction of a spring is used for polishing all the time under the action of centrifugal force, the cutter assembly can be, can carry out the corase grind to the feed cylinder hole earlier, carry out the correct grinding again, help improving the machining precision.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a feed cylinder hole grinding device which characterized in that: the device comprises a workbench (1), wherein a charging barrel (3) is fixed on the left side of the workbench (1) through a fixing frame (2), a ram mechanism (6) is installed on the right side of the workbench (1), a motor (5) is fixedly installed on the ram mechanism (6), and a tool bit (4) is fixedly installed at the head of an output shaft (51) on the left side of the motor (5);

tool bit (4) are just right the hole of feed cylinder (3), tool bit (4) include arbor (41), shrink portion (411) installation cutter subassembly (42) of arbor (41), cutter subassembly (42) include annular frame (421), radial processing through-hole (422) of annular frame (421), through-hole (422) quantity is 3 at least, through-hole (422) are being close to annular frame (421) outer wall department diameter shrink diminishes, installation branch (424) in through-hole (422), branch (424) top is passed through-hole (422), branch (424) top fixed mounting cutter (426).

2. The grinding device for the inner hole of the charging barrel as claimed in claim 1, wherein: the radial section of the contraction part (411) is hexagonal, and the axial inner hole of the annular frame (421) is matched with the contraction part (411).

3. The grinding device for the inner hole of the charging barrel as claimed in claim 1, wherein: and a sealing cover (44) is fixed on the left side surface of the cutter shaft (41) through a bolt.

4. The grinding device for the inner hole of the charging barrel as claimed in claim 1, wherein: and internal threads (4221) are processed at the position, close to the inner wall of the annular frame (421), of the through hole (422).

5. The grinding device for the inner hole of the charging barrel as claimed in claim 4, wherein: and a set screw (423) is arranged below the support rod (424), and the external thread of the set screw (423) is matched with the internal thread (4221).

6. The grinding device for the inner hole of the charging barrel as claimed in claim 1, wherein: a spring (425) is arranged between the bottom plate of the supporting rod (424) and the reducing part of the through hole (422).

7. The grinding device for the inner hole of the charging barrel as claimed in any one of claims 1 to 6, wherein: the number of the cutter assemblies (42) is two, and a gasket (43) is arranged between the two cutter assemblies (42).