CN209811068U - Cylinder drawing and ejecting mechanism - Google Patents

Abstract

The utility model provides a cylinder drawing and ejecting mechanism, which comprises a cylinder component, an ejecting pin, a guide sleeve and a die body; the cylinder assembly comprises a cylinder body and a cylinder piston rod; the die body is provided with an assembling hole, and the guide sleeve is provided with a guide hole; two ends of a piston rod of the air cylinder along the axial direction are respectively connected with the air cylinder body and the ejection pin, the ejection pin is installed in the guide hole in a sliding mode, and the air cylinder assembly drives the ejection pin to move along the axial direction of the guide hole; the guide sleeve is fixedly connected with the die body, and the guide sleeve is wholly or partially embedded into the mounting hole; or the guide sleeve is installed in a space outside the inner space of the mounting hole, and the guide hole is communicated with the mounting hole. The utility model discloses it is big to be suitable for the plate to fluctuate, needs to increase the occasion that the knock pin held the sheet material, through the setting of guide pin bushing, effectively prevents knock pin and mould body direct contact, avoids producing the adverse effect of contraposition article quality because of the piece.

Description

Cylinder drawing and ejecting mechanism

Technical Field

The utility model relates to a stamping die field specifically, relates to a cylinder draws liftout mechanism, especially a cylinder draws liftout mechanism for automobile stamping die.

Background

In cylinder drawing liftout equipment among the prior art, mainly use cylinder + liftout round pin to directly process the structure of liftout round pin via hole on blank holder profile, this kind of structure is relatively coarse because the machining precision of via hole is low, the surface, liftout round pin and via hole space are big, it is used to not get up the guide department, because the stroke that the cylinder used is generally bigger, and influence liftout round pin rigidity, the liftout round pin is very easy and the mutual friction of mounting hole lateral wall produces the piece, if the piece is taken to the mould profile, can crush the plate, and then influence the quality of face article.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing a cylinder draws liftout mechanism.

According to the utility model provides a cylinder drawing and ejecting mechanism, which comprises a cylinder component, an ejecting pin, a guide sleeve and a die body; the cylinder assembly comprises a cylinder body and a cylinder piston rod;

the die body is provided with an assembling hole, and the guide sleeve is provided with a guide hole; two ends of a piston rod of the air cylinder along the axial direction are respectively connected with the air cylinder body and the ejection pin, the ejection pin is installed in the guide hole in a sliding mode, and the air cylinder assembly drives the ejection pin to move along the axial direction of the guide hole;

the guide sleeve is fixedly connected with the die body, and the guide sleeve is wholly or partially embedded into the mounting hole; or the guide sleeve is installed in a space outside the inner space of the mounting hole, and the guide hole is communicated with the mounting hole.

Preferably, the guide sleeve is in interference fit with the attachment hole.

Preferably, a radial opening hole is formed in the wall surface of the mounting hole, and a locking screw is arranged in the radial opening hole; the locking screw penetrates through the radial hole and then is contacted with the guide sleeve.

Preferably, the ejector pin is in threaded connection with the cylinder piston rod.

Preferably, the die body is provided with one or more assembling holes;

the assembling holes, the cylinder assemblies, the jacking pins and the guide sleeves correspond to one another in number.

Preferably, the cylinder body is provided with a one-way throttle valve and a quick connector;

the quick connector comprises a QS type quick connector.

Preferably, a cylinder fixing flange is arranged on the cylinder body; the cylinder body is connected to the die body through the cylinder fixing flange.

Preferably, the guide sleeve comprises a brass guide sleeve; the ejector pin comprises a 45-gauge steel pin.

Preferably, the ejector pin is hemispherical at the other end opposite to the end connected with the piston rod of the cylinder, among two ends in the axial direction.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses it is big to be suitable for the plate to fluctuate, needs to increase the occasion that the knock pin held the sheet material, through the setting of guide pin bushing, effectively prevents knock pin and mould body direct contact, avoids producing the adverse effect of contraposition article quality because of the piece.

2. The pair of the locking screw is abutted to the outer diameter of the guide sleeve, so that the guide sleeve can be prevented from being brought out of the molded surface by the ejector pin to crush a mold, and the safety and reliability of the guide sleeve in the working process are ensured.

3. When the fluctuation between the middle part and the two sides of the molded surface of the blank holder is large, a plurality of material ejecting pin structures can be arranged at the middle concave part according to the actual situation, so that the middle part is prevented from collapsing when the plates are fed.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic view of the connection of the cylinder assembly, the ejector pin and the guide sleeve;

fig. 2 is a schematic view of the overall structure of the cylinder drawing and ejecting mechanism.

The figures show that:

ejector pin 1 locking screw 6

Guide sleeve 2 one-way throttle valve 7

Cylinder piston rod 3 quick connector 8

Cylinder mounting flange 4 mould body 9

Cylinder body 5

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

As shown in fig. 1 and 2, the cylinder drawing and ejecting mechanism provided by the utility model comprises a cylinder assembly, an ejecting pin 1, a guide sleeve 2 and a die body 9; the cylinder assembly comprises a cylinder body 5 and a cylinder piston rod 3; the die body 9 is provided with an assembling hole, and the guide sleeve 2 is provided with a guide hole; two ends of the cylinder piston rod 3 in the axial direction are respectively connected with the cylinder body 5 and the ejection pin 1, the ejection pin 1 is slidably mounted in the guide hole, and the cylinder assembly drives the ejection pin 1 to move in the axial direction of the guide hole; the guide sleeve 2 is fixedly connected with the die body 9, and the guide sleeve 2 is wholly or partially nested and installed in the mounting hole; or, the guide sleeve 2 is installed in a space outside the inner space of the assembling hole, and the guide hole and the assembling hole are communicated with each other. That is to say, through the setting of guide pin bushing 2 for liftout round pin 1 can avoid direct and mould body 9 contacts, and then avoids producing the piece because both rubs, influences final board product quality. Preferably, the guide sleeve 2 comprises a brass guide sleeve; ejector pin 1 contains 45# steel material round pins, through the control of structural material and hardness for ejector pin 1 can guarantee sufficient support intensity and the degree of stability of operation.

In the embodiment, the guide sleeve 2 is in interference fit with the attachment hole. A radial opening is formed in the wall surface of the mounting hole, and a locking screw 6 is arranged in the radial opening; the locking screw 6 penetrates through the radial hole and then contacts with the guide sleeve 2. Through two kinds of fastening connection modes for enough joint strength has between guide pin bushing 2 and the mould body 9, takes out guide pin bushing 2 and weigh mould body 9 when avoiding the ejector pin 1 motion. Preferably, the ejector pin 1 is in threaded connection with a cylinder piston rod 3. And the other end of the ejection pin 1, which is connected with the piston rod 3 of the air cylinder relatively, is hemispherical in two ends in the axial direction. Further preferably, the ejector pin 1 and the cylinder piston rod 3 can be in snap connection, fixed connection or integrally formed; the position of the ejector pin 1 for contacting the plate member may be a smooth surface in other forms, so as to prevent scratching of the plate member.

The cylinder body 5 is provided with a one-way throttle valve 7 and a quick connector 8; preferably, the quick-connect coupling 8 comprises a QS type quick-connect coupling. The cylinder body 5 is provided with a cylinder fixing flange 4; the cylinder body 5 is connected to the die body 9 through the cylinder fixing flange 4. Preferably, the die body 9 is provided with one or more attachment holes; the assembling holes, the cylinder assemblies, the jacking pins 1 and the guide sleeves 2 correspond to one another in number. For example, in practical application, when the fluctuation of the middle and two sides of the blank holder profile is large, 2-3 material ejecting pin structures are arranged at the middle concave part according to practical conditions, so that the middle part is prevented from collapsing when the plate is fed.

Preferred embodiments:

a guide sleeve 2 is additionally arranged between the ejector pin 1 and the die body 9 for guiding, a guide sleeve connecting hole is required to be machined at a proper position of the blank holder profile, the assembling hole aperture size tolerance H7 is achieved, and the roughness is 1.6;

the outer diameter size tolerance m6, the roughness 1.6, the inner diameter size tolerance F7, the roughness 1.6 and the material of the guide sleeve 2 are selected: brass. The guide sleeve 2 is in interference fit with an assembly hole processed on the blank holder, and the interference range is 0 to +0.04 mm;

the outer diameter tolerance of the liftout pin 1 is minus 0.1mm, the excircle roughness is 1.6, the end head is turned into a semi-sphere shape, the tail part is processed to form a thread, the thread pitch of the thread is consistent with that of the cylinder piston rod 3, the material is 45# steel, and the heat treatment is carried out: surface quenching, the hardness is 38-42 HRC.

In order to ensure the safety and reliability of the guide sleeve 2 in the working process, a threaded hole M6 is processed at the position of the blank holder corresponding to the side surface of the attachment hole, and the M6 locking screw 6 is propped against the outer side surface of the guide sleeve 2, so that the guide sleeve 2 can be prevented from being taken out of a molded surface by the jacking pin 1, and the die body 9 is crushed.

When the cylinder is started to eject, compressed air enters the cylinder body 5 through the QS type quick plug-in connector 8, the piston rod 3 on the cylinder body 5 drives the ejecting pin 1 to stably move upwards through the guide sleeve 2, and finally the ejecting height of the ejecting pin 1 is flush with the molded surfaces of the blank holders at two ends;

the foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims (9)

1. The cylinder drawing and ejecting mechanism is characterized by comprising a cylinder assembly, an ejecting pin (1), a guide sleeve (2) and a die body (9); the cylinder assembly comprises a cylinder body (5) and a cylinder piston rod (3);

the die body (9) is provided with an assembling hole, and the guide sleeve (2) is provided with a guide hole; the two ends of the cylinder piston rod (3) along the axial direction are respectively connected with the cylinder body (5) and the ejection pin (1), the ejection pin (1) is installed in the guide hole in a sliding mode, and the cylinder assembly drives the ejection pin (1) to move along the axial direction of the guide hole;

the guide sleeve (2) is fixedly connected with the die body (9), and the guide sleeve (2) is wholly or partially nested and installed in the mounting hole; or the guide sleeve (2) is installed in a space outside the inner space of the mounting hole, and the guide hole is communicated with the mounting hole.

2. The cylinder drawing and ejecting mechanism according to claim 1, characterized in that the guide sleeve (2) is in interference fit with an attachment hole.

3. The cylinder drawing and jacking mechanism according to claim 2, wherein a radial hole is formed in the wall surface of the mounting hole, and a locking screw (6) is arranged in the radial hole; the locking screw (6) penetrates through the radial hole and then contacts with the guide sleeve (2).

4. The cylinder drawing and ejecting mechanism according to claim 1, characterized in that the ejecting pin (1) is in threaded connection with a cylinder piston rod (3).

5. The cylinder drawing and ejecting mechanism according to claim 1, characterized in that one or more assembling holes are arranged on the die body (9);

the assembling holes, the cylinder components, the material ejecting pins (1) and the guide sleeves (2) correspond to each other in number one by one.

6. The cylinder drawing and ejecting mechanism according to claim 1, wherein a one-way throttle valve (7) and a quick-connection plug (8) are arranged on the cylinder body (5);

the quick-connection plug (8) comprises a QS type quick-connection plug.

7. The cylinder drawing and ejecting mechanism according to claim 1, wherein a cylinder fixing flange (4) is arranged on the cylinder body (5); the cylinder body (5) is connected to the die body (9) through the cylinder fixing flange (4).

8. The cylinder drawing and ejecting mechanism according to claim 1, wherein the guide sleeve (2) comprises a brass guide sleeve; the ejector pin (1) comprises a No. 45 steel pin.

9. The cylinder drawing and ejecting mechanism according to claim 1, wherein the ejecting pin (1) is hemispherical at the other end opposite to the end connected with the cylinder piston rod (3) in the two ends in the axial direction.