CN111956099A

CN111956099A - Cutter shaft assembly and assembling device of material handling machine

Info

Publication number: CN111956099A
Application number: CN202010849244.2A
Authority: CN
Inventors: 龚雅萍; 杨雯
Original assignee: Taizhou Minrui Technology Co ltd
Current assignee: Taizhou Minrui Technology Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2020-11-20

Abstract

The utility model provides a material processor knife shaft subassembly and assembly quality, the clearance fit section that the optical axis section processing of arbor formed the interference fit section that has positive tolerance and had negative tolerance in this knife shaft subassembly, is convenient for carry out the installation of bearing simultaneously from the arbor both ends, and the device includes the base, installs the positioning seat on the base, positioning seat bilateral symmetry installation side die, the opposite face installation axle sleeve of side die, the die is installed to the positioning seat top, upper die bottom installation cassette, the axle card is placed to the cassette bottom. During assembly, the bearings are sleeved in the two ends of the cutter shaft and placed on the positioning seat, the upper punch presses the assembled shaft clamp down, and then the bearings and the shaft clamp are tightly pressed through the pushing action of the shaft sleeve. Through forming interference fit section and clearance fit section with the optical axis section processing of arbor, can follow the arbor both ends and assemble the bearing simultaneously under the condition of guaranteeing arbor surface smoothness, simple to operate effectively improves work efficiency.

Description

Cutter shaft assembly and assembling device of material handling machine

Technical Field

The invention relates to a cutter shaft assembly of a material processing machine and an assembling device.

Background

In a traditional cutter shaft assembly, smooth shaft sections above and below an annular groove on a cutter shaft are generally processed into positive tolerance and form interference matching with bearings, two ends of the cutter shaft are respectively used for installing a blade and connecting a power mechanism, a sealing ring is further required to be installed at one end of the cutter shaft where the blade is installed, the smoothness of the outer surface of the cutter shaft is guaranteed, and therefore two bearings can be installed at one end of the cutter shaft where the power mechanism is connected in sequence, the assembly process is multiple, and the efficiency is low.

Disclosure of Invention

Aiming at the defects in the problems, the invention provides a cutter shaft assembly of a material handling machine and an assembling device.

In order to achieve the purpose, the cutter shaft assembly of the food processor comprises a cutter shaft, wherein an annular groove is machined in the middle of the cutter shaft, a shaft clamp is installed in the annular groove, threaded connection sections are machined at two ends of the cutter shaft, an optical axis section is arranged between the annular groove and the threaded connection sections, the optical axis section comprises an interference fit section close to the annular groove and a clearance fit section far away from the annular groove, and a bearing is sleeved on the interference fit section.

As a further improvement of the invention, the width of the interference fit section is less than or equal to the thickness of the bearing.

The invention also provides an assembling device of the cutter shaft assembly of the material processing machine, which comprises a base, wherein the base is provided with positioning seats, the positioning seats are bilaterally and symmetrically provided with side stamping dies, the side stamping dies are in sliding connection with the base through a sliding table (5), shaft sleeves are arranged on opposite surfaces of the side stamping dies, a through hole is axially processed in the center of each shaft sleeve, the upper stamping die is arranged above each positioning seat, the bottom of the upper stamping die is provided with a clamping seat, a limiting groove processed at the lower part of the clamping seat is matched with the shaft clamp, and magnets are arranged on two side walls which are opposite to each other left and.

As a further improvement of the invention, the center of the positioning seat protrudes to form a positioning part, the top of the positioning part is provided with a positioning groove, and the positioning groove is matched with the shape of the middle part of the cutter shaft.

As a further improvement of the invention, the positioning part is symmetrically processed with guide grooves at left and right sides, and the guide grooves are matched with the bearing in shape.

As a further improvement of the invention, an air cylinder is arranged below the base, and a cylinder rod of the air cylinder penetrates through the base to be connected with the positioning seat.

As a further improvement of the invention, an engineering plastic sleeve is arranged at one end, facing the positioning seat, in the through hole, and the inner diameter of the engineering plastic sleeve is matched with the outer diameter of the interference fit section.

As a further improvement of the invention, the through hole axially extends towards one end edge of the positioning seat to form a convex ring, and the convex ring corresponds to the bearing inner ring.

The invention has the beneficial effects that:

the interference fit section with positive tolerance and the clearance fit section with negative tolerance are formed by processing the optical axis section of the cutter shaft, so that the installation of the bearings is simultaneously carried out from the two ends of the cutter shaft, the assembly process is simplified, the working efficiency is effectively improved, the surface smoothness of the clearance fit section of the cutter shaft is also ensured, and the sealing effect can be ensured when the sealing ring is installed on the clearance fit section close to the blade installation position on the cutter shaft.

Drawings

FIG. 1 is a front view of a cutter shaft assembly of a disposer embodying the present invention;

FIG. 2 is a schematic structural view of the cutter shaft of the component 1;

FIG. 3 is a front view of an assembly device for a cutter shaft assembly of a disposer embodying the present invention;

fig. 4 is a cross-sectional view of the component 7;

FIG. 5 is a side assembly view of the component 9 and the spindle catch 3;

FIG. 6 is a partial cross-sectional side view of the component 9;

FIG. 7 is a cross-sectional view of the component 10;

FIG. 8 is a side view of the component 10;

FIG. 9 is a schematic working diagram I of an assembling device for a cutter shaft assembly of a material handling machine according to the present invention;

FIG. 10 is a schematic view II of the assembling apparatus for a cutter shaft assembly of a material handling machine according to the present invention.

In the figure: 1. a cutter shaft; 11. an annular groove; 12. a light axis segment; 121. an interference fit section; 122. a clearance fit section; 13. a threaded connection section; 2. a bearing; 3. shaft clamping; 4. a base; 5. a sliding table; 6. side punching dies; 7. a shaft sleeve; 71. a through hole; 72. an engineering plastic sleeve; 73. a convex ring; 8. putting a die on the die; 9. a card holder; 91. a limiting groove; 92. a magnet; 10. positioning seats; 101. a positioning part; 102. a guide groove; 103. positioning a groove; 14. and a cylinder.

Detailed Description

As shown in fig. 1 and 3, the cutter shaft assembly of the invention comprises a cutter shaft 1, wherein an annular groove 11 is formed in the middle of the cutter shaft 1, a shaft clamp 3 is installed in the annular groove 11, threaded connection sections 13 are formed at two ends of the cutter shaft 1, an optical axis section 12 is arranged between the annular groove 11 and the threaded connection sections 13, the optical axis section 12 comprises an interference fit section 121 close to the annular groove 11 and a clearance fit section 122 (see fig. 2) far away from the annular groove 11, a bearing 2 is sleeved on the interference fit section 121, and the width of the interference fit section 121 is smaller than or equal to the thickness of the bearing 2; the assembling device comprises a base 4, a positioning seat 10 is arranged on the base 4, an air cylinder 14 is arranged below the base 4, a cylinder rod of the air cylinder 14 penetrates through the base 4 to be connected with the positioning seat 10, a positioning part 101 is formed by protruding the center of the positioning seat 10, a positioning groove 103 is processed at the top of the positioning part 101, the positioning groove 103 is matched with the shape of the middle part of a cutter shaft 1, a guide groove 102 (see figures 7 and 8) is processed in a bilateral symmetry mode by the positioning seat 101, a side stamping die 6 is arranged in the bilateral symmetry mode by the positioning seat 10, the side stamping die 6 is connected with the base 4 in a sliding mode through a sliding table 5, a shaft sleeve 7 is arranged on the opposite surface of the side stamping die 6, a through hole 71 is processed in the central axial direction of the shaft sleeve 7, an engineering plastic sleeve 72 (see figure 4) is arranged at one end, facing the positioning seat 10, in the, the convex ring 73 corresponds to the inner ring of the bearing 2, the upper punch die 8 is arranged above the positioning seat 10, the clamping seat 9 is arranged at the bottom of the upper punch die 8, the limiting groove 91 processed at the lower part of the clamping seat 9 is matched with the shaft clamp 3 (see figure 5), and magnets 92 (see figure 6) are arranged on two opposite side walls at the left and right of the limiting groove 91.

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

as shown in fig. 2, the middle part of the cutter shaft is processed with an annular groove, the upper part and the lower part of the annular groove are optical axis sections, the optical axis sections are respectively processed into two parts, the part close to the annular groove is an interference fit section, the size of the interference fit section is processed according to the precision of positive tolerance, the section far away from the annular groove is a clearance fit section, and the size of the clearance fit section is processed according to the negative tolerance precision, at the moment, the inner diameter of the bearing is slightly larger than the outer diameter of the clearance fit section and forms interference fit with the interference fit section, the bearing can be easily sleeved into the clearance fit section of the cutter shaft, thereby ensuring the surface smoothness of the clearance fit section, the two ends of the cutter shaft are respectively used for installing the blade and connecting the power mechanism, one end of the cutter shaft, which is provided with the blade, is also required to be provided with a sealing ring, the sealing ring is just arranged on the clearance fit section, so that the surface smoothness of the clearance fit section can be ensured, and the sealing effect can be effectively ensured.

During assembly, the bearings are sleeved at the two ends of the cutter shaft respectively and placed on the positioning seat, the middle part of the cutter shaft is clamped with the positioning groove of the positioning part in a matching mode, the bearings are located in the guide grooves on the two sides respectively, the central axis of the cutter shaft is overlapped with the central axis of the shaft sleeve, then the side punching die moves for a certain distance towards the direction of the positioning seat, the end part of the cutter shaft extends into the engineering plastic sleeve until the end face of the shaft sleeve is contacted with the inner ring of the bearing, the shaft clamp is placed in the limiting groove at the lower part of the clamping seat, the shaft clamp is positioned by means of the suction force of the magnet, the opening of the shaft clamp faces downwards, the shaft clamp corresponds to the annular groove of the cutter shaft, then the upper punching die presses the shaft clamp into the annular groove (see figure 9), the upper punching die resets, the cylinder rod of.

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 cutter shaft subassembly of material processing machine which characterized in that: including arbor (1), arbor (1) middle part processing ring channel (11), install axle card (3) in ring channel (11), arbor (1) both ends processing threaded connection section (13), ring channel (11) with be optical axis section (12) between threaded connection section (13), optical axis section (12) are including being close to interference fit section (121) of ring channel (11) and keeping away from clearance fit section (122) of ring channel (11), suit bearing (2) on interference fit section (121).

2. The disposer cutter shaft assembly of claim 1, wherein: the width of the interference fit section (121) is less than or equal to the thickness of the bearing (2).

3. The utility model provides an assembly quality of cooking machine knife shaft subassembly which characterized in that: including base (4), installation positioning seat (10) on base (4), positioning seat (10) bilateral symmetry installation side die (6), side die (6) through slip table (5) with base (4) sliding connection, the opposite face installation axle sleeve (7) of side die (6), axle sleeve (7) central axial through-hole (71) of processing, die (8) are installed to positioning seat (10) top, go up die (8) bottom installation cassette (9), cassette (9) lower part processing spacing groove (91) with axle card (3) phase-match, relative two side wall mounting magnet (92) are controlled to spacing groove (91).

4. The assembly device of claim 3, wherein said cutter shaft assembly comprises: the center of the positioning seat (10) protrudes to form a positioning part (101), a positioning groove (103) is machined in the top of the positioning part (101), and the positioning groove (103) is matched with the middle of the cutter shaft (1) in shape.

5. The assembly device of claim 4, wherein said cutter shaft assembly comprises: the positioning part (101) is symmetrically processed with guide grooves (102) in the left and right directions, and the guide grooves (102) are matched with the bearing (2) in shape.

6. The assembly device of claim 3, wherein said cutter shaft assembly comprises: an air cylinder (14) is installed below the base (4), and a cylinder rod of the air cylinder (14) penetrates through the base (4) to be connected with the positioning seat (10).

7. The assembly device of claim 3, wherein said cutter shaft assembly comprises: an engineering plastic sleeve (72) is arranged in the through hole (71) and faces one end of the positioning seat (10), and the inner diameter of the engineering plastic sleeve (72) is matched with the outer diameter of the interference fit section (121).

8. The assembly device of claim 3, wherein said cutter shaft assembly comprises: the through hole (71) axially extends towards the edge of one end of the positioning seat (10) to form a convex ring (73), and the convex ring (73) corresponds to the inner ring of the bearing (2).