CN111204033B

CN111204033B - Mold clamping force buffering structure of mold clamping device

Info

Publication number: CN111204033B
Application number: CN201811391618.XA
Authority: CN
Inventors: 杨景焜
Original assignee: HWA Chin Machinery Factory Co Ltd
Current assignee: HWA Chin Machinery Factory Co Ltd
Priority date: 2018-11-21
Filing date: 2018-11-21
Publication date: 2021-08-27
Anticipated expiration: 2038-11-21
Also published as: CN111204033A

Abstract

The invention provides a mould locking force buffer structure of a mould closing device, which is arranged on the mould closing device for synchronously opening or closing the mould by utilizing a gear to match a rack, and comprises a fixed seat with an opening, a slide block with a screw hole, a cover body for closing the opening of the fixed seat and a spring, wherein the fixed seat is provided with a chute for accommodating the slide block, at least one end surface which is positioned on the fixed seat and has the same sliding direction with the slide block in the chute is fixedly provided with the spring, and the spring is fixedly locked in the screw hole of the slide block after a bolt penetrates through a bearing sleeved in a shaft hole of the gear, so that when a first movable mould seat of the mould closing device is driven by a driving cylinder and a second movable mould seat synchronously displaces and closes the mould by virtue of the rack and the gear, mould locking pressure applied by a bolt by a mould locking cylinder can be dispersed in the chute of the slide block by virtue of displacement of the slide block, and further buffer the mould locking pressure.

Description

Mold clamping force buffering structure of mold clamping device

Technical Field

The present invention relates to a buffer structure, and more particularly to a buffer structure for a mold clamping device and capable of buffering mold clamping pressure.

Background

In the conventional mold clamping device, four guide posts penetrate between a fixed mold base and a movable mold base, and a toggle mechanism and an oil hydraulic cylinder are disposed on an actuating base to control the movable mold base to move on the guide posts, thereby completing the operations of mold clamping, mold locking and molding. In the molding operation mode, the movable die holder is driven by the hydraulic cylinder to move independently, so that when the movable die holder is clamped, the clamping pressure is applied to the movable die holder, which easily causes the movable die holder to move during clamping, and the product in the die is defective.

In order to overcome the above-mentioned disadvantages, taiwan publication No. M257273 discloses a driving device for opening and closing a control mold of a plastic molding machine, which comprises a base, a plurality of guide rods disposed on the base, an inner mold base and an outer mold base having a mold inserted therein, a rack extending from the same side of the inner mold base and the outer mold base, and a gear engaged with the rack, wherein the inner mold base and the outer mold base are synchronously moved in opposite directions or in opposite directions by the cooperation of the rack and the gear when the servo driving device controls the connecting device to move the inner mold base The relative force of the outer die is applied to the gear bolt, and the gear bolt is easy to break due to the fact that the gear bolt cannot be loaded for a long time.

In addition, taiwan publication No. M353816 discloses a synchronous opening and closing mechanism for a mold, which includes a base, a driving connecting rod and a driven connecting rod passing through corresponding sliding slots of the base and respectively fixed to the bottoms of an inner mold base and an outer mold base, wherein the other ends of the driving connecting rod and the driven connecting rod are respectively pivoted to two ends of a relay connecting rod, and an output shaft of a motor is connected to a screw rod screwed to the inner mold base through a transmission shaft.

Disclosure of Invention

In view of the existing structure of synchronous mold closing or mold opening by matching the rack and the gear, the gear axis can not load the mold locking pressure. Therefore, the invention aims to improve the service life of the gear bolt by combining the buffer structure with the mold closing device and dispersing the mold locking pressure applied to the gear bolt by using the buffer structure.

To achieve the object of the foregoing disclosure, the present invention provides a mold clamping force buffering structure of a mold clamping device, wherein the mold clamping device is provided with a first fixed mold base, a second fixed mold base, and a first movable mold base and a second movable mold base capable of moving and displacing on a base, and a first rack and a second rack jointly engaged with a gear having a shaft hole are respectively and fixedly arranged on the first movable mold base and the second movable mold base, so that when the first movable mold base is driven to displace by a driving cylinder, the first rack is linked with the gear to displace the second rack, and further the first movable mold base and the second movable mold base synchronously displace and mold clamping, and the mold clamping cylinder arranged on the first fixed mold base and the second fixed mold base fixes the mold clamping of the first movable mold base and the mold clamping of the second movable mold base, and is characterized in that:

the first fixed die base is locked with a buffer structure, the buffer structure comprises a fixed base with an opening, a sliding block with a screw hole, a cover body for sealing the opening and a spring, a sliding groove for accommodating the sliding block is formed in the fixed base, the spring is fixed on at least one end face in the sliding direction of the sliding block in the sliding groove, the cover body is locked on the fixed base through a locking part, and is locked on the screw hole of the sliding block after a bearing sleeved in the shaft hole of the gear is penetrated through by a bolt, so that the die locking pressure of the die locking cylinder is buffered by means of the displacement of the sliding block in the sliding groove.

The cover body is provided with a containing groove for containing the spring, so that two ends of the spring just abut against the space between the cover body containing groove and the sliding block.

The mold clamping force buffering structure of the mold clamping device is characterized in that the end face, without the opening, of the sliding chute is provided with a containing groove for containing the spring, and two ends of the spring are just abutted between the containing groove of the sliding chute and the sliding block.

The cover body is provided with a containing groove for containing the spring, the end face of the sliding groove without the opening is provided with a containing groove for containing another spring, and two ends of the two springs are respectively abutted between the containing groove of the cover body and the sliding block and between the containing groove of the sliding groove and the sliding block.

The mold clamping force buffering structure of the mold clamping device is characterized in that the sliding groove is a T-shaped groove.

The mold clamping force buffering structure of the mold clamping device is characterized in that the sliding block is a T-shaped sliding block.

The clamping force buffering structure of the mold clamping device is characterized in that the spring is fixed on the sliding block in a welding mode.

Based on the above, when the driving cylinder drives the first movable die holder and simultaneously enables the second movable die holder to synchronously displace and close the dies by virtue of the rack and the gear, the die locking pressure of the bolt is applied by the die locking cylinder, and the die locking pressure of the die locking cylinder can be buffered by virtue of the displacement and dispersion of the slide block screwed by the bolt in the chute of the fixed seat.

Drawings

FIG. 1 is a schematic view of an injection blow molding machine embodying the present invention.

Fig. 2 is an exploded perspective view of the first embodiment of the present invention.

Fig. 3 is a cross-sectional view of a first embodiment of the invention.

Fig. 4 is an exploded perspective view of a second embodiment of the present invention.

Fig. 5 is an exploded perspective view of a third embodiment of the present invention.

Fig. 6 to 9 are schematic views illustrating the operation of the injection blowing machine according to the third embodiment of the present invention.

Description of reference numerals: (invention) 100-mold clamping apparatus; 101-guide pillars; 102-a base; 103-a first fixed die holder; 104-a second fixed die holder; 105-a first movable die holder; 1051-a mold; 106-a second active die holder; 1061-a mold; 107-gear; 108-a first rack; 109-a second rack; 110-bolt; 111-a bearing; 112-a drive cylinder; 113-a mold locking cylinder; 200-a buffer structure; 201-a fixed seat; 2011-opening; 2012-chute; 2013-containing groove; 202-a slide block; 2021-screw hole; 203-a cover body; 2031-vessel; 204-a spring; 205-locking piece.

Detailed Description

To enable the honor review board to understand the techniques, means and functions of the invention to achieve the objectives, a preferred embodiment is illustrated in conjunction with the drawings, and the following detailed description is given:

first, referring to fig. 1 to 2, the mold clamping apparatus 100 of the present invention is mainly combined with a buffer structure 200. The mold clamping apparatus 100 includes a base 102 having a plurality of guide posts 101, and the base 102 is provided with a first fixed mold base 103, a second fixed mold base 104, and a first movable mold base 105 and a second movable mold base 106 capable of moving on the base 102 and the guide posts 101, the first movable mold base 105 and the second movable mold base 106 are respectively and fixedly provided with

molds

1051 and 1061, and a first rack 108 and a second rack 109 engaged with a gear 107 together, a bearing 111 for a bolt 110 to pass through is provided in a shaft hole of the gear 107, the first movable mold base 105 is connected with a driving cylinder 112, and the first movable mold base 105 and the second movable mold base 106 are respectively connected with at least one mold locking cylinder 113.

The buffer structure 200 includes a fixing base 201, a slider 202, a cover 203 and a spring 204. In the first embodiment of the present invention, the fixing base 201 has an opening 2011 and a chute 2012, and in the first embodiment of the present invention, the chute 2012 is a T-shaped groove; the sliding block 202 has a screw hole 2021, and in an embodiment of the present invention, the sliding block 202 is a T-shaped sliding block; the cover 203 is used to seal the opening 2011 of the fixing base 201 and is provided with a groove 2031; the spring 204 is accommodated in the accommodating groove 2031 of the cover 203, and in an embodiment of the invention, the spring 204 is fixed to the slider 202 by welding, so that when the cover 203 is locked to the fixing base 201 by the locking member 205, two ends of the spring 204 just abut against between the accommodating groove 2031 and the slider 202 (as shown in fig. 3), so that the bolt 110 is inserted through the bearing 111 sleeved in the axial hole of the gear 107 and then locked to the screw hole 2021 of the slider 202.

In a second embodiment of the present invention, please refer to fig. 4, the buffer structure 200 includes a fixing base 201, a sliding block 202, a cover 203, and a spring 204. The fixing base 201 has an opening 2011 and a chute 2012, in an embodiment of the present invention, the chute 2012 is a T-shaped slot, and an accommodating slot 2013 is disposed on an end surface of the chute 2012 not having the opening 2011; the sliding block 202 has a screw hole 2021, and in an embodiment of the present invention, the sliding block 202 is a T-shaped sliding block; the cover 203 is used for sealing the opening 2011 of the fixing seat 201; the spring 204 is accommodated in the accommodating groove 2013 of the sliding groove 2012, and in an embodiment of the present invention, the spring 204 is fixed to the slider 202 by welding, so that when the cover 203 is locked to the fixing base 201 by the locking member 205, two ends of the spring 204 just abut against between the accommodating groove 2013 and the slider 202, so that the bolt 110 is inserted into the bearing 111 sleeved in the shaft hole of the gear 107 and then locked to the screw hole 2021 of the slider 202.

In a third embodiment of the present invention, please refer to fig. 5, the buffer structure 200 includes a fixing base 201, a sliding block 202, a cover 203, and two springs 204. The fixing base 201 has an opening 2011 and a chute 2012, in an embodiment of the present invention, the chute 2012 is a T-shaped slot, and an accommodating slot 2013 is disposed on an end surface of the chute 2012 not having the opening 2011; the sliding block 202 has a screw hole 2021, and in an embodiment of the present invention, the sliding block 202 is a T-shaped sliding block; the cover 203 is used to seal the opening 2011 of the fixing base 201 and is provided with a groove 2031; the two springs 204 are respectively accommodated in the accommodating groove 2013 of the sliding slot 2012 and the accommodating groove 2031 of the cover 203, so that when the cover 203 is locked to the fixing base 201 by the locking member 205, two ends of the two springs 204 respectively abut against between the accommodating groove 2031 of the cover 203 and the slider 202 and between the accommodating groove 2013 of the sliding slot 2012 and the slider 202, so that the bolt 110 is inserted through the bearing 111 sleeved in the shaft hole of the gear 107 and then locked to the screw hole 2021 of the slider 202.

Next, referring to fig. 6, the following paragraphs are described by combining a buffering structure 200 according to a third embodiment of the present invention with an injection bottle blowing machine. The fixed seat 201 of the buffer structure 200 is locked to the first fixed die holder 103, when the first movable die holder 105 is driven to move by the driving cylinder 112, the first rack 108 is used to link the gear 107 to move the second rack 109 (as shown in fig. 7), so that the first movable die holder 105 and the second movable die holder 106 can synchronously move and match the dies, and the

dies

1051, 1061 of the first movable die holder 105 and the second movable die holder 106 are locked and fixed by the locking cylinder 113 arranged on the first fixed die holder 103 and the second fixed die holder 104 (as shown in fig. 8), so as to perform bottle blowing operation, so that the locking pressure is applied to the bolt 110 sleeved on the bearing 111 of the gear 107 (in cooperation with fig. 9), at this time, the slide block 202 locked to the bolt 110 slides in the slide groove 2012 of the fixed seat 201 along with the locking pressure, so that the locking pressure is buffered by the elastic sliding action of the slide block 202 between the two springs 204, the bolts 110 sleeved on the bearings 111 of the gear 107 are prevented from being broken due to the fact that the clamping pressure cannot be loaded, and the service life of the mold clamping device 100 is prolonged.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A die locking force buffer structure of a die closing device, the die closing device is provided with a first fixed die holder, a second fixed die holder and a first movable die holder and a second movable die holder which can move and move on a base, and a first rack and a second rack which are jointly meshed with a gear with a shaft hole are respectively and fixedly arranged on the first movable die holder and the second movable die holder, so that when the first movable die holder is driven to move by a driving cylinder, the first rack can be linked with the gear to enable the second rack to move, the first movable die holder and the second movable die holder can synchronously move and close the die, and the die locking cylinder arranged on the first fixed die holder and the second fixed die holder can lock and fix the dies of the first movable die holder and the second movable die holder, and the die closing device is characterized in that:

2. The clamping force buffering structure of a mold clamping apparatus as claimed in claim 1, wherein the cover has a receiving groove for receiving the spring, so that both ends of the spring are just abutted between the receiving groove of the cover and the slide block.

3. The clamping force buffering structure of a mold clamping device as claimed in claim 1, wherein the end surface of the slide groove not having the opening is provided with a receiving groove for receiving the spring, so that both ends of the spring are just abutted between the receiving groove of the slide groove and the slide block.

4. The clamping force buffering structure of a mold clamping apparatus as claimed in claim 1, wherein the cover has a receiving groove for receiving the spring, and the end surface of the slide groove not having the opening has a receiving groove for receiving another spring, so that two ends of the two springs abut against the space between the cover receiving groove and the slide block and the space between the slide groove receiving groove and the slide block, respectively.

5. The clamping force buffering structure of a mold clamping apparatus according to claim 1, wherein the slide groove is a T-shaped groove.

6. The clamping force buffering structure of a mold clamping apparatus according to claim 1, wherein the slide is a T-shaped slide.

7. The clamping force buffering structure of a mold clamping apparatus according to claim 1, wherein the spring is fixed to the slide by welding.