TWI754377B - Quick mold change dust cover structure - Google Patents

Abstract

A quick mold-changing dust cover structure, especially the base is provided with a clamping seat, which is used for quick disassembly and assembly of a fixture, and a corresponding positioning member and a positioning hole are arranged between the fixture and the clamping seat. A positioning ring groove and a plurality of equally divided positioning steel balls are arranged at the corresponding position of the positioning member and the positioning hole, and a piston assembly is arranged under the clamping seat, and the plurality of positioning steel balls are driven by the piston assembly to be clamped or released on the positioning ring. The groove is characterized in that: a dust cover is arranged in the positioning hole, and an elastic element is arranged at the bottom of the dust cover, which is used to bounce the dust cover upward to seal the positioning hole when changing the mold, so as to avoid dust or machining chips. It is characteristic that objects invade through the positioning hole, resulting in that the plurality of positioning steel balls cannot be accurately positioned.

Description

Quick mold change dust cover structure

The quick-mold-changing dust-proof cover structure of the present invention mainly uses the dust-proof cover to prevent dust or processing chips and other debris from intruding into the interior of the clamping seat, resulting in the inability of precise positioning of the positioning steel balls.

Press, the applicant in this case filed an application on May 29, 2009, the application number: No. 109206723, the announcement number: M600225 "quick mold change fixture structure" new type patent case, mainly in: there is a clip on the base The holder is used for quick disassembly and assembly of a fixture. A corresponding positioning piece and a positioning hole are arranged between the fixture and the clamping base. The positioning piece and the positioning hole are provided with a positioning ring groove and a plurality of The positioning steel balls are divided into equal parts, and a piston assembly is arranged under the clamping seat. The piston assembly drives the plurality of positioning steel balls to clamp or release them in the positioning ring groove, so as to quickly change the mold, strive for the aging time of the mold change, and ensure the operation safety. It has high-efficiency operation ability to improve automatic production; at the same time, the clamping seat is provided with a positioning plate corresponding to the plurality of positioning steel balls, the positioning plate is provided with a plurality of ball sockets, and a plurality of ball sockets are arranged between the plurality of ball sockets In the spacer part, a circular arc part for guiding is arranged around the ball socket, so that the plurality of positioning steel balls are evenly positioned in the plurality of ball sockets, so that the clamping force of the plurality of positioning steel balls is more stable.

However, in the above-mentioned new patent case of "quick mold change fixture structure" applied for by the applicant of this case, in actual operation and application, it is impossible to ensure that the chips or foreign objects generated during processing penetrate into the interior of the piston assembly through the positioning hole, which is easy to cause. Caused by cutting chips or foreign matter A plurality of positioning steel balls cannot be smoothly clamped or released in the positioning ring groove, which causes the production line to stop for a long time, affects the production capacity, and wastes manpower and man-hours.

The inventor of the present invention is currently engaged in the manufacture and design of related products, and has accumulated many years of practical experience and experience. In view of the existing problems and deficiencies in the new patent case of "quick mold change fixture structure" applied for by the applicant in this case, he actively invests in innovation. With the spirit of improvement, the completed quick mold change dust cover structure.

The technical means used by the invention to solve the problem and the effect compared with the prior art are that: the base is provided with a clamping seat, which is used for quick disassembly and assembly of a fixture, and there is a corresponding positioning between the fixture and the clamping seat. The positioning member and the positioning hole are provided with a positioning ring groove and a plurality of equally divided positioning steel balls, a piston assembly is arranged under the clamping seat, and the piston assembly drives the plurality of positioning steel balls to clamp Or released in the positioning ring groove, it is characterized in that: the positioning hole is provided with a dust cover, and the bottom of the dust cover is provided with an elastic element, which is used to bounce the dust cover upward to seal the positioning hole when changing the mold, so as to avoid The debris such as dust or machining chips intrudes into the plurality of positioning steel balls through the open positioning hole, so as to prevent the plurality of positioning steel balls from being unable to be accurately positioned due to debris such as dust or machining debris; it has an improvement in efficacy and achieves its main purpose .

In the above-mentioned quick-mold-change dust-proof cover structure, the top of the dust-proof cover is provided with an inwardly recessed concave portion, which is used for the matching of the positioning member of the jig.

The above-mentioned quick-mold-change dust cover structure, wherein: the periphery of the top of the dust cover A ring of grooves is arranged at the circumference, which is used for fastening and fixing a sealing gasket.

In the above-mentioned quick-mold-changing dust-proof cover structure, a spring groove is arranged at the bottom of the dust-proof cover, which is used for arranging an elastic element.

In the above-mentioned quick-mold-change dust cover structure, the clamping seat is provided with a positioning step inside the positioning hole, which is used to prevent the dust cover from coming out of the positioning hole.

10: Pedestal

11: accommodating room

12: Valve seat

13: Intake connector

20: Piston assembly

21: Down

211: Lower shaft

212: Groove

213: screw hole

214: Lower spring groove

215: Arc

22: Spring top piece

23: Take the seat

231: Upper spring groove

232: Upper shaft

233: Shaft hole

234: Inner order edge

235: inner ring groove

236: Push the top slope

30: Clamping seat

31: Shaft Holder

32: Fish eye hole

33: Lateral screw holes

34: Positioning hole

35: accommodating slot

36: Positioning the steps

37: Ring groove

38: Straight air holes

39: exhaust hole

40: Positioning disc

41: Through hole

42: hollow part

43: Ball socket

44: Spacer

45: Arc part

50: Jig

51: Positioning pieces

52: Locating ring groove

60: Dust cover

61: Recess

62: Groove

63: Spring groove

P: Screw

R: positioning steel ball

S1: The first elastic element

S2: Second elastic element

Q1: The first sealing gasket

Q2: Second sealing gasket

Q3: The third sealing gasket

Q4: Fourth sealing gasket

Q5: Fifth sealing gasket

Q6: Sixth Gasket

Figure 1: It is a three-dimensional exploded schematic diagram of the base and the fixture of the present invention.

Figure 2: It is a perspective exploded schematic view of the base, the piston assembly and the clamping seat of the present invention.

Figure 3: It is a partial cross-sectional schematic diagram of the three-dimensional combination of the base, the piston assembly and the clamping seat of the present invention.

Figure 4: It is a schematic diagram of the cross-sectional combination of the present invention.

Fig. 5: It is a schematic diagram of the loose state of the positioning steel ball when the air is in the present invention.

Figure 6: It is a schematic diagram of the dust-proof action of the dust-proof cover of the fixture when the mold is quickly changed according to the present invention.

Figure 7: It is a schematic diagram of the clamping state of the positioning steel balls when the present invention is exhausted.

In order to make it easy for those skilled in the art to deeply understand the structural content of the present invention and the functional benefits that can be achieved, a specific embodiment is listed and described in detail with the drawings as follows:

A quick mold change dust cover structure, please refer to the first to the fourth picture. Mainly includes: base 10, piston assembly 20, clamping seat 30, positioning plate 40, fixture 50 and dust cover 60; wherein:

The base 10 is provided with two accommodating chambers 11 , two sets of piston assemblies 20 are arranged in the two accommodating chambers 11 , and a valve seat 12 is provided between the two accommodating chambers 11 on the base 10 . , the front of the valve seat 12 is provided with an air inlet connector 13 for introducing compressed air to actuate the two piston assemblies 20 synchronously. The base 10 uses a plurality of screws P at the outer circumference of the accommodating chamber 11 locking and fixing a clamping seat 30;

As shown in the third figure, the piston assembly 20 is composed of a lower seat 21, a plurality of spring abutting members 22 and an upper seat 23; wherein:

A first sealing washer Q1 is provided at the outer circumference of the lower seat 21, a lower shaft portion 211 is extended upwardly from the center of the lower seat 21, and a second sealing washer Q2 is provided at the outer circumference of the lower shaft portion 211. A groove 212 is provided inside the lower shaft portion 211 , a screw hole 213 is formed at the center of the groove 212 , and a plurality of lower spring grooves are formed on the top surface of the lower seat 21 around the circumference of the lower shaft portion 211 214, the opening of the lower spring groove 214 faces upwards, and is used for accommodating and setting a plurality of the spring abutting members 22. The circumference of the top surface of the lower shaft portion 211 is provided with an inwardly concave arc surface 215, which is used for accommodating and setting a plurality of A positioning steel ball R is used;

The spring abutting member 22 is disposed in the lower spring groove 214, and the spring abutting member 22 can be sleeved with a first elastic element S1;

The upper seat 23 is a circular disk body. The bottom surface of the upper seat 23 is provided with a plurality of upper spring grooves 231 corresponding to the plurality of lower spring grooves 214 . The elastic element S1, the outer circumference of the upper seat 23 is provided with a third sealing gasket Q3, and the center of the upper seat 23 is provided with an upper The shaft portion 232 has a fourth sealing washer Q4 at the outer circumference of the upper shaft portion 232 , and a shaft hole 233 is formed inside the upper shaft portion 232 . The inner diameter of the shaft hole 233 is the same as the outer diameter of the lower shaft portion 211 . Correspondingly, an inner stepped edge 234 is provided above the shaft hole 233, the inner stepped edge 234 is provided with a circle of inner annular grooves 235, and the top of the inner stepped edge 234 is provided with a narrow push-up slope 236;

The clamping seat 30 is a circular disk body, and a shaft holding portion 31 extends downward from the center of the bottom of the clamping seat 30 . The outer diameter of the shaft holding portion 31 is equal to the inner diameter of the accommodating chamber 11 . A fifth sealing washer Q5 is provided on the outer circumference of the shaft holding portion 31, and a plurality of fish-eye holes 32 are provided around the clamping seat 30, which are used for a plurality of screws P to pass through the locking knot. The circumferential surface is provided with a radially arranged transverse screw hole 33, the center of the shaft holding portion 31 is provided with a positioning hole 34, and the interior of the shaft holding portion 31 is provided with an accommodating groove 35, and the accommodating groove 35 is provided with a plurality of An equally divided screw hole (not shown in the figure) is used as a plurality of screws P to lock and fix a positioning plate 40, and a positioning step 36 is provided inside the positioning hole 34 for positioning the dust cover 60. The shaft holding portion 31 is provided with an annular groove 37 corresponding to the outer periphery of the accommodating groove 35 , and the bottom surface of the annular groove 37 is provided with a communicating straight air hole 38 corresponding to the transverse screw hole 33 , so that the Compressed air is introduced from the straight air hole 38 to drive the upper seat 23 to move downward and compress the first elastic element S1 . The clamping seat 30 is provided with a lateral screw corresponding to the outer periphery of the shaft holding portion 31 . an exhaust hole 39 that communicates with the hole 33;

The positioning plate 40 is accommodated and disposed in the accommodating groove 35 of the clamping base 30 . The positioning plate 40 is provided with a plurality of transparent holes corresponding to the plurality of screw holes (not shown in the figure). The hole 41 is used for a plurality of screws P to pass through and lock. The center of the positioning plate 40 corresponding to the positioning hole 34 is provided with a hollow portion 42, and the circumference of the hollow portion 42 is provided with a plurality of equally divided ball sockets. 43. For the purpose of accommodating and setting a plurality of positioning steel balls R, a plurality of spacers 44 are arranged between the plurality of ball sockets 43, and a circular arc portion 45 for guiding is arranged around the ball socket 43, so that the positioning The steel ball R can be precisely located in the ball socket 43;

The top surface of the fixture 50 can be used for fixing workpieces (not shown in the figure). The bottom surface of the fixture 50 is provided with two positioning pieces 51 corresponding to the two positioning holes 34 of the two clamping bases 30 . The positioning pieces The outer diameter of 51 is equivalent to the inner diameter of the positioning hole 34, so as to be inserted into the positioning hole 34, the outer circumference of the positioning member 51 is provided with a positioning ring groove 52 corresponding to the plurality of positioning steel balls R, as a plurality of positioning ring grooves 52. The positioning steel ball R is used for clamping and positioning;

The dust cover 60 is a cylinder, the outer diameter of the dust cover 60 is equal to the inner diameter of the groove 212 of the lower seat 21 , so as to be sleeved on the positioning hole 35 and the inner wall of the groove 212 , the dust cover 60 The top of the dust cover 60 is provided with an inwardly recessed recess 61, which is used for the alignment of the positioning member 51 of the jig 50. The outer circumference of the top of the dust cover 60 is provided with a ring groove 62, which is used to fasten a sixth seal For the purpose of the gasket Q6, the bottom of the dust cover 60 is provided with a spring groove 63 which is recessed inward, as a second elastic element S2, the upper end of the second elastic element S2 is pressed against the dust cover 60. The spring groove 63, the lower end of the second elastic element S2 is pressed against the groove 212 of the lower seat 21, and the dust cover 60 is rebounded upward to close the clamping seat 30 by the tension of the second elastic element S2. The positioning hole 34 also locates the dust cover 60 by the positioning step 36 to prevent the dust cover 60 from coming out of the positioning hole 34 .

The present invention, which is formed by the combination of the above-mentioned component structures, is to provide a quick mold-changing dust cover structure, in practical application:

Please refer to the fifth figure: it is a schematic diagram of the loosening state of the positioning steel ball during the air intake of the present invention. When changing the mold, it is only necessary to introduce the compressed air from the air inlet connector 13 of the valve seat 12 in the middle of the base 10 into the horizontal screw hole 33 and the straight air hole 38 of the two clamping seats 30, so as to actuate the two pistons synchronously The two upper seats 23 of the assembly 20 are displaced downward, so that the plurality of positioning steel balls R are no longer pushed inward by the pushing slope 236 , and are in a relaxed state, so that the fixture 50 can be quickly replaced. At the same time, the dust cover 60 is bounced upward by the tension of the second elastic element S2 to close the positioning hole 34 of the clamping seat 30 , and the dust cover 60 is positioned by the positioning step edge 36 to block the dust cover 60 Get out of the positioning hole 34 to prevent debris such as dust or machining chips from intruding into the plurality of positioning steel balls R of the positioning plate 40 from the open positioning hole 34, and prevent debris such as dust or machining debris from causing the plurality of positioning steel balls R Unable to pinpoint persons.

Please refer to the sixth figure: it is a schematic diagram of the dustproof action of the dustproof cover of the jig during the rapid mold change of the present invention. As shown in Fig. 7: It is a schematic diagram of the clamping state of the positioning steel ball when the present invention is exhausted. The user only needs to re-install the jig 50 to be processed into the two clamping seats 30 on the base 10 , and let the two positioning members 51 of the jig 50 be inserted into the two positioning parts of the two clamping seats 30 In the hole 34, the supply of compressed air is stopped again, that is, the compressed air can be discharged from the exhaust hole 39. At this time, by the upward elastic tension of the first elastic element S1, the two upper seats 23 of the two piston assemblies 20 are made Synchronously move upward, so that the plurality of positioning steel balls R are again pushed inward by the push-up slope 236 to show a clamped state. The plurality of positioning steel balls R are re-clamped in the positioning ring grooves 52 of the positioning member 51, because each jig 50 can be pre-installed with a workpiece to be processed (not shown in the figure), and the base 10 is fixed When it is placed on the processing table of the processing machine, after only one calibration, different fixtures 50 can be quickly replaced, and there is no need to repeat the calibration of accuracy and coordinates, so the downtime of the production line can be greatly shortened.

Based on the above, the present invention provides a quick mold-changing dust cover structure. After the actual production and repeated operation tests by the inventor, it is confirmed that the expected functional benefits of the present invention can be achieved. The first creation without knowledge has industrial application value, and it is true that it has met the essentials of the establishment of the utility and progress of the invention patent.

10: Pedestal

11: accommodating room

12: Valve seat

13: Intake connector

20: Piston assembly

21: Down

211: Lower shaft

212: Groove

213: screw hole

214: Lower spring groove

215: Arc

22: Spring top piece

23: Take the seat

232: Upper shaft

233: Shaft hole

234: Inner order edge

235: inner ring groove

236: Push the top slope

30: Clamping seat

31: Shaft Holder

32: Fish eye hole

33: Lateral screw holes

34: Positioning hole

35: accommodating slot

40: Positioning disc

41: Through hole

42: hollow part

43: Ball socket

44: Spacer

45: Arc part

60: Dust cover

61: Recess

62: Groove

63: Spring groove

P: Screw

R: positioning steel ball

S1: The first elastic element

S2: Second elastic element

Q6: Sixth Gasket

Claims (4)

A quick mold-changing dust cover structure mainly includes: a fixture is provided on the base, the base is at least provided with a accommodating chamber, the accommodating chamber is provided with a piston assembly, and the accommodating chamber is provided with a clamping seat, A corresponding positioning piece and a positioning hole are arranged between the fixture and the clamping seat, and a positioning ring groove and a plurality of equally divided positioning steel balls are arranged at the corresponding positions of the positioning piece and the positioning hole, and the plurality of positioning steel balls are driven by the piston assembly. A positioning steel ball is clamped or released in the positioning ring groove, and the piston assembly is composed of a lower seat, a plurality of spring abutting pieces and an upper seat; wherein: A lower shaft portion extends upward from the center of the top surface of the lower seat, a groove is arranged inside the lower shaft portion, and an inwardly concave arc surface is arranged at the circumference of the top surface of the lower shaft portion to accommodate the plurality of For the purpose of positioning steel balls, the lower seat is provided with a plurality of lower spring grooves corresponding to the circumference of the outer periphery of the lower shaft portion; The spring abutting member is arranged in the lower spring groove, and is used for assembling a first elastic element; The upper seat is provided with a plurality of upper spring grooves corresponding to the plurality of lower spring grooves, as the plurality of first elastic elements are sleeved, an upper shaft portion extends upward from the center of the upper seat, and the upper shaft portion is provided with There is a shaft hole, as the lower shaft part of the lower seat is sleeved, an inner step is arranged above the shaft hole, the inner step is provided with a circle of inner ring groove, and the top of the inner step is provided with a The upper and lower narrow pushing slopes are used to push the plurality of positioning steel balls inward; The clamping seat is provided with a shaft holding portion corresponding to the accommodating chamber of the base, a transverse screw hole is formed on the circumferential surface of the clamping seat, and the shaft holding portion is provided with an accommodating groove, and the shaft holding portion corresponds to An annular groove is arranged on the periphery of the accommodating groove, and the bottom surface of the annular groove corresponds to the horizontal screw hole There is a straight air hole that communicates with each other, and the compressed air is introduced from the straight air hole to drive the upper seat to move downward and compress the plurality of first elastic elements. The accommodating groove of the clamping seat is provided with a A positioning plate; the center of the positioning plate is provided with a hollow portion corresponding to the positioning hole, the circumference of the hollow portion is provided with a plurality of equally divided ball sockets, and a plurality of spacers are arranged between the plurality of ball sockets, the A circular arc part for guiding is arranged around the ball socket, so that a plurality of the positioning steel balls are positioned in a plurality of the ball sockets; it is characterized in that: the positioning hole of the clamping seat is provided with a dust cover, the dustproof cover The outer diameter of the cover is equivalent to the inner diameter of the groove of the lower seat, so as to be sleeved on the positioning hole of the clamping seat and the inner wall of the groove of the lower seat, the top of the dust cover is provided with an inwardly recessed The concave part is used for the positioning of the fixture. The bottom of the dust cover is provided with a second elastic element, and the upper end of the second elastic element is pressed against the spring groove of the dust cover. The second elastic element The lower end of the element is abutted against the groove of the lower seat, and the dust cover is used to bounce upwards to close the positioning hole of the clamping seat by the tension of the second elastic element. The quick-mold-change dust cover structure according to claim 1, wherein: the outer circumference of the top of the dust cover is provided with a groove, which is used to fasten and fasten a sealing gasket. The quick-mold-change dust cover structure according to claim 1, wherein: the bottom of the dust cover is provided with a spring groove, which is used for arranging an elastic element. The quick-mold-change dust cover structure as claimed in claim 1, wherein: the clamping seat is provided with a positioning step inside the positioning hole for preventing the dust cover from coming out of the positioning hole.

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