TWI822431B - Ejector assembly - Google Patents

Abstract

This invention includes a shell, a ejector pin fixing piece and a retaining ring. The shell is hollow and includes an accommodating section, and the accommodating section includes an opening; the ejector pin fixing piece is rod-shaped and includes an ejector pin fixing head, the ejector pin fixing head is provided with an ejector pin hole, and the ejector pin fixing piece can be rotated through the Inside the shell, the ejector pin fixing head passes through the opening of the accommodation section; the baffle ring sleeve is placed on the ejector pin fixing head, tightly fits the ejector pin fixing head and can rotate together with the ejector pin fixing piece, and the baffle ring blocks the opening. The baffle ring of this creation is tightly matched with the ejection pin fixing head, so the baffle ring and the ejection pin fixing part can rotate at high speed together without wearing each other. It can solve the problems caused by the wear of the existing ejection pin assembly structure due to high-speed rotation and provide an energy-saving method. An ejector pin assembly that extends service life, avoids frictional heating, and reduces the chance of cutting fluid or cutting chips entering the ejector pin holder.

Description

Ejector assembly

The invention relates to a kind of processing equipment, in particular to an ejector pin assembly used to abut the workpiece during processing.

When processing workpieces, clamping jaws are often used to clamp the workpiece and rotate at high speed, and a thimble is used to press against the workpiece to maintain the stability of the workpiece during processing.

The existing ejector pin assembly includes a housing, a protective cover, an ejector pin fixing member and an ejector pin; wherein, the housing is used to be combined with a machine tool, and the housing includes two opposite ends; the protective cover is combined with the One end of the housing includes a through hole; the ejector pin holder includes two opposite ends, the ejector pin holder is rotatably inserted into the housing, and one end of the ejector pin holder passes through the through hole of the protective cover ; The ejector pin is inserted into one end of the ejector pin fixing member that passes through the through hole and is fixed with the ejector pin fixing member.

However, in the existing ejector pin assembly, the ejector pin fixing member can rotate within the housing and penetrate the protective cover. Therefore, when the workpiece is processed, on the one hand, the high-speed rotating ejector pin fixing part and the periphery of the perforation are worn, and the worn ejector pin fixing part and the protective cover need to be replaced; on the other hand, it will also cause the ejector pin fixing part and the peripheral edge of the perforation to be replaced. The enlarged spacing between the protective covers easily allows cutting fluid or cutting chips to enter the ejector pin holder, further increasing the damage to the ejector pin holder due to high-speed rotation. In addition, high-speed friction also causes damage to the ejector pin holder. , or even cause the temperature of the thimble it is fixed to increase. It can be seen from this that there is still room for improvement and progress in the existing ejector pin assembly.

In order to solve the problems caused by the wear of the structure of the existing ejector pin assembly due to high-speed rotation, the present invention provides an ejector pin assembly that can achieve the purpose of alleviating the aforementioned problems.

The thimble assembly proposed by this invention to solve the technical problem includes: a shell, which is hollow inside and includes an extending direction, a first end and a second end opposite to each other in the extending direction of the shell, and a accommodating section and a fixing section; the accommodating section includes an opening located at the first end of the housing; the outer diameter of the fixing section is smaller than the outer diameter of the accommodating section, and the fixing section extends from the The accommodating section extends to the second end of the housing; an ejector pin fixing member is rod-shaped and includes a first end and a second end that are opposite to each other, and is located at the first end of the ejector pin fixing member. An ejector pin fixing head; the ejector pin fixing head includes an ejector pin hole extending from the first end of the ejector pin fixing component toward the second end of the ejector pin fixing component; the ejector pin fixing component is rotatably inserted Inside the housing, and the ejector pin fixing head passes through the opening of the accommodation section; and a baffle ring, which is annular; the baffle ring is placed on the ejector pin fixing head and is fixed with the ejector pin The head is tightly fitted and can rotate together with the ejector pin fixing member, and the blocking ring blocks the opening; wherein, the blocking ring is located in the accommodation section of the housing; the ejector pin assembly includes a ring-shaped gasket and a The first bearing; the ejector pin holder includes a first sleeve section connected to the ejector pin fixing head; the first bearing is sleeved on the first sleeve section of the ejector pin holder and located in the accommodating section; The gasket sleeve is placed in the first nesting section, in the accommodating section, and abuts against the ejector pin fixing head and the outer ring of the first bearing.

In the ejector pin assembly, the gasket is fixed to the first sleeve section and can rotate together with the ejector pin fixing member.

The ejector pin assembly includes a spacer ring and a one-way thrust bearing; the spacer ring and the one-way thrust bearing are sleeved on the first nesting section of the ejector pin fixing member and are located in the accommodation section, The spacer ring is between the first bearing and the one-way thrust bearing.

The ejector pin assembly includes a plurality of second bearings, each of the second bearings being a ball bearing; the ejector pin fixing member includes a second sleeve section, and the second sleeve section extends to the The second end; the plurality of second bearing sleeves are placed in the second sleeve section.

The improvement of the efficiency obtained by the technical means of this invention is that the baffle ring of the thimble assembly of the invention is tightly matched with the thimble fixing head of the thimble fixing part, because the baffle ring and the thimble fixing part can rotate at high speed together without mutual interference. This invention can not only extend the service life of the ejector pin fixture and avoid frictional heating, but also reduce various problems caused by cutting fluid or cutting chips entering the ejector pin fixture.

10: Shell

101:First end

102:Second end

11: Accommodation section

111:Open your mouth

12: Consolidation section

20:Ejection pin fixing piece

201:First end

202:Second end

21: The first set-up section

22: The second set-up section

23:Connection segment

24: Ejection pin consolidation head

241:Thimble hole

30:Blocking ring

40:Gasket

50:First bearing

60: Spacer ring

70: One-way thrust bearing

80: Second bearing

90: Nut

100: End cap

Figure 1 is a perspective view of the appearance of a preferred embodiment of this invention.

Figure 2 is an exploded view of the preferred embodiment of the present invention.

Figure 3 is an exploded view of some components of the preferred embodiment of the present invention.

Figure 4 is a partially enlarged perspective view of the preferred embodiment of the present invention.

Figure 5 is a cross-sectional view of a preferred embodiment of this invention.

In order to understand the technical characteristics and practical effects of the present invention in detail, and to realize it according to the content of the invention, the preferred embodiments as shown in the figures are further described in detail as follows: As shown in Figures 1 to 5, the present invention The ejector pin assembly of the preferred embodiment includes a housing 10, an ejector pin fixing member 20, a retaining ring 30, a gasket 40, a first bearing 50, a spacer ring 60, and a one-way thrust bearing 70 , three second bearings 80, a nut 90 and an end cap 100.

As shown in Figures 1 to 5, the housing 10 is in the shape of a stepped tube and is hollow inside. The housing 10 includes an extending direction, a first end 101, a second end 102, an accommodating section 11 and a fixing section. 12; wherein, the first end 101 and the second end 102 of the housing 10 are opposite to each other in the extension direction of the housing 10; the accommodating section 11 includes an opening 111, and the opening 111 is located at the third end of the housing 10. One end 101; the outer diameter of the fixing section 12 is smaller than the outer diameter of the accommodating section 11, and the fixing section 12 extends from the accommodating section 11 to the second end 102 of the housing 10.

As shown in Figures 1 to 5, the ejector pin holder 20 is in the shape of a round rod and includes a first end 201, a second end 202, a first sleeve section 21, a second sleeve section 22, and a connecting section. 23 and an ejector pin fixing head 24; wherein, the first end 201 and the second end 202 of the ejector pin fixing member 20 are relatively positioned; the first nesting section 21, the connecting section 23 and the second nesting section 22 are in accordance with each other. connected in sequence, the second nesting section 22 extends from the connecting section 23 to the second end 202 of the thimble fixing member 20, and the first nesting section 21, the connecting section 23 and the second nesting section 22 The diameter gradually decreases toward the second end 202 of the ejector pin holder 20 .

As shown in Figures 1 to 5, the ejector pin fixing head 24 is located at the first end 201 of the ejector pin fixing member 20, connected to the first sleeve section 21, and used to fix an ejector pin (not shown). The ejector pin is fixed The knot 24 includes an ejector pin hole 241 extending from the first end 201 of the ejector pin holder 20 toward the second end 202 of the ejector pin holder 20 . The ejector pin holder 20 is rotatably inserted into the interior of the housing 10 , the first sleeve section 21 is located in the accommodating section 11 , and the connecting section 23 and the second sleeve section 22 extend into the fixing section. In the section 12 , the ejector fixing head 24 passes through the opening 111 of the accommodating section 11 . The ejector pin hole 241 is for the ejector pin to be inserted.

As shown in FIGS. 1 to 5 , the blocking ring 30 is annular and is sleeved on the ejector pin fixing head 24 . It tightly fits with the ejector pin fixing head 24 and can rotate together with the ejector pin fixing member 20 . Ring 30 blocks this opening 111 .

As shown in Figures 1 to 5, the gasket 40 is annular; the gasket 40 is nested and fixed on the first nesting section 21, is located in the accommodating section 11, and is against the ejector pin fixing head. twenty four. In the preferred embodiment of the present invention, although the blocking ring 30 and the ejector pin fixing head 24 are tightly matched, cutting fluid and cutting chips cannot easily enter the ejector pin fixing head 24 from between the blocking ring 30 and the ejector pin fixing head 24 . 20; however, the gasket 40 fixed to the first sleeve section 21 can rotate together with the ejector pin fixing part 20, and can further block the gap between the inner edge of the retaining ring 30 and the ejector pin fixing head 24. The gap provides another layer of protection to prevent cutting fluid and cutting chips from entering between the retaining ring 30 and the ejector pin consolidation head 24 .

As shown in FIGS. 1 to 5 , the first bearing 50 is a ball bearing; the first bearing 50 , the spacing ring 60 and the one-way thrust bearing 70 are sleeved on the first sleeve section of the ejector pin fixing member 20 21 and located in the accommodating section 11 , the spacer ring 60 is between the first bearing 50 and the one-way thrust bearing 70 .

As shown in Figures 1 to 5, the three second bearings 80 are sleeved on the second sleeve section 22 of the thimble fixing member 20, and the nut 90 is screw-locked to the second sleeve section 22 and abuts against the three second bearings 80. Second bearing 80. In the preferred embodiment of the invention, each second bearing 80 is a ball bearing; compared with the existing ejector pin assembly that uses a roller bearing to support the second end 202 of the ejector pin fixing member 20, the invention uses three Ball bearings replace existing roller bearings, which can solve the problem of roller bearings being easily damaged due to force, and are more flexible in maintenance.

As shown in FIGS. 1 to 5 , the end cap 100 is screw-locked to the second end 102 of the housing 10 .

As shown in Figures 1 to 5, the blocking ring 30 of the present invention tightly fits the ejector pin fixing head 24 of the ejector pin holder 20. Therefore, when the ejector pin holder 20 presses the ejector against the workpiece and rotates with the workpiece at high speed, the blocking ring 30 and the ejector pin holder 20 can rotate together at high speed without mutual wear, so that there will be no friction between the ejector pin holder and the fixed ejector pin, causing excessive temperature problems. Compared with the existing ejector pin assembly that combines the protective cover with the housing and causes the high-speed rotating ejector pin holder to wear the protective cover, this invention can not only extend the service life of the ejector pin holder 20, but also reduce the risk of cutting fluid Or various problems may arise from cutting chips entering the ejector pin fixing member 20 .

Furthermore, even if the baffle ring 30 and the peripheral wall of the accommodating section 11 of the housing 10 wear each other as the ejector pin holder 20 rotates at high speed, the cutting fluid or cutting chips attached to the baffle ring 30 will be thrown away. It is difficult to enter the ejector pin fixing member 20 from between the blocking ring 30 and the peripheral wall of the accommodating section 11 .

Moreover, in this invention, the baffle ring 30 and the ejector pin fixing head 24 of the ejector pin fixing member 20 are tightly matched but can still be detached from each other, so that the baffle ring 30 can still be replaced when worn out without having to replace the entire ejector pin. The fixing part 20 makes this invention more advantageous in terms of maintenance and repair costs.

The above are only preferred embodiments of the present invention and do not impose any formal restrictions on the present invention. Anyone with ordinary knowledge in the technical field can use the present invention without departing from the scope of the technical solution proposed by the present invention. Equivalent embodiments with partial changes or modifications to the technical content disclosed in the creation, and which do not deviate from the content of the technical solution of this creation, still fall within the scope of the technical solution of this creation.

10: Shell

101:First end

102:Second end

11: Accommodation section

12: Consolidation section

20:Ejection pin fixing piece

30:Blocking ring

100: End cap

Claims (5)

An ejector pin assembly, which includes: a shell, which is hollow inside and includes an extension direction, a first end and a second end opposite to each other in the extension direction of the shell, an accommodating section and a fixation section; the accommodating section includes an opening located at the first end of the housing; the outer diameter of the fixing section is smaller than the outer diameter of the accommodating section, and the fixing section extends from the accommodating section to the shell the second end of the body; an ejector pin fixing member, which is rod-shaped and includes a first end and a second end at opposite positions, and an ejector pin fixing head located at the first end of the ejector pin fixing member; the The ejector pin fixing head includes an ejector pin hole, which extends from the first end of the ejector pin fixing component toward the second end of the ejector pin fixing component; the ejector pin fixing component is rotatably inserted into the interior of the housing, And the ejector pin fixing head passes through the opening of the accommodating section; and a blocking ring is annular; the blocking ring is placed on the ejector pin fixing head and tightly matches the ejector pin fixing head to be able to fit with the ejector pin fixing head. The ejector pin fixing parts rotate together, and the blocking ring blocks the opening; the blocking ring is located in the accommodation section of the housing; the ejector pin assembly includes an annular gasket and a first bearing; the ejector pin is fixed The component includes a first sleeve section connected to the ejector pin fixing head; the first bearing is sleeved on the first sleeve section of the ejector pin fixing member and is located in the accommodating section; the gasket sleeve is sleeved in the third A set section is located in the accommodation section and abuts against the ejector pin fixing head and the outer ring of the first bearing. The ejector pin assembly of claim 1, wherein the gasket is fixed to the first nesting section and can rotate together with the ejector pin fixing member. The ejector pin assembly according to claim 2, which includes a spacer ring and a one-way thrust bearing; the spacer ring and the one-way thrust bearing are sleeved on the first sleeve section of the ejector pin fixing member and located in the container. The spacer ring is placed in the section between the first bearing and the one-way thrust bearing. The ejector pin assembly according to claim 3, which includes a plurality of second bearings, each of which is a ball bearing; the ejector pin fixing member includes a second sleeve section, and the second sleeve section extends to the The second end of the ejector pin fixing member; the plurality of second bearing sleeves are placed in the second sleeve section. The ejector pin assembly according to claim 1, which includes a plurality of second bearings, each of which is a ball bearing; the ejector pin fixing member includes, and a second sleeve section, the second sleeve section Extending to the second end of the ejector pin fixing member; the plurality of second bearing sleeves are placed in the second sleeve section.

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