CN113442376A - Die guide pillar structure - Google Patents
Die guide pillar structure Download PDFInfo
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- CN113442376A CN113442376A CN202010210587.4A CN202010210587A CN113442376A CN 113442376 A CN113442376 A CN 113442376A CN 202010210587 A CN202010210587 A CN 202010210587A CN 113442376 A CN113442376 A CN 113442376A
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- die
- guide
- guide pillar
- groove
- pillar body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
- B29C45/2606—Guiding or centering means
Abstract
The invention relates to a die guide pillar structure which comprises a fixed die and a movable die matched with the fixed die, wherein a clearance groove is formed in the fixed die, a guide block is arranged in the clearance groove, a square guide pillar is fixedly arranged on the movable die and is arranged in the clearance groove in a sliding mode, wear-resisting plates corresponding to the guide block in position are arranged on two sides of the square guide pillar, the wear-resisting plates protrude out of the side wall of the square guide pillar, the guide block protrudes out of the side wall of the clearance groove, and the wear-resisting plates are in contact fit with the guide block and guide the square guide pillar to slide. According to the invention, the structural form that the wear-resisting plates are arranged on the side surface is adopted, and only the wear-resisting plates need to be repaired, so that the repairing difficulty of a fitter is reduced, and the problems that the whole guide pillar needs to be repaired, the repairing is difficult and the time is wasted in the prior art are solved.
Description
Technical Field
The invention belongs to the field of dies, and particularly relates to a die guide pillar structure.
Background
With the rapid development of the automobile lamp industry, the modeling structure of the automobile lamp tends to be developed in a complicated direction, and automobile lamp products with larger modeling sizes are more and more in line with the aesthetic sense of people. Along with the demand of matched mould products, the requirement of the matched mould products is higher and higher, and the overall size is larger and larger.
Meanwhile, in order to ensure the stability and reliability of the mold structure, a mold designer usually symmetrically designs positioning structures such as guide pillar bodies on the periphery of the mold with a deep cavity drop and a large size drop. The guide pillar body mechanism can bear certain lateral force of the die by virtue of a stable structural form, and ensures the relative positions of the moving die core, the moving die core and each moving part of the die so as to realize accurate die assembly and prevent the die from deforming due to dislocation in the production process.
Zhanghe provides an explanation for the design requirements of the guiding and positioning system of the injection mold in the book "plastic molding process and mold design" of the editions. But traditional guide pillar body mechanism adopts integral design, is difficult to the dismouting, has lost the maintenance and repair time of a large amount of pincers workers. Meanwhile, due to position deviation caused by various factors such as a fixing mode, material selection, fit clearance and the like, the guide pillar body is subjected to brittle fracture without obvious deformation.
Disclosure of Invention
The invention provides a die guide pillar structure, aiming at solving the problems that a traditional square guide pillar mechanism is difficult to disassemble and assemble and consumes a large amount of repairing and assembling time, the die guide pillar structure comprises a fixed die and a movable die matched with the fixed die, a dead space groove is formed in the fixed die, a guide block is installed in the dead space groove, a square guide pillar is fixedly arranged on the movable die, the square guide pillar is arranged in the dead space groove in a sliding mode, wear-resisting plates corresponding to the guide block in position are arranged on two sides of the square guide pillar, the wear-resisting plates protrude out of the side wall of the square guide pillar, the guide block protrudes out of the side wall of the dead space groove, and the wear-resisting plates are in contact fit with the guide block and guide the square guide pillar to slide. The material of guide block is brass and graphite, and the material of antifriction plate is Cr12, and Cr12 wearability is than higher, and brass and graphite material, the self-lubricating is better, is difficult for producing the oxidation, influences the precision.
Preferably, an installation groove is formed in the side wall of the clearance groove, and the guide block is installed in the installation groove. The guide block sets up in the both sides of keeping away the dead slot, and when fixed mould and movable mould compound die, the guide block contacts with the antifriction plate, and the guide side guide post slides to improve the stationarity of mould motion.
Furthermore, the guide block is provided with a mounting hole, a screw penetrates through the mounting hole to be fixedly connected with the positioning pin, the positioning pin is provided with a fixing hole, and the screw penetrates through the fixing hole to fix the positioning pin in the mounting groove. And the screw penetrates through the mounting hole to be fixed on the side wall of the positioning pin, so that the guide block is fixedly connected with the positioning pin.
Preferably, the number of the mounting holes is two, and the length direction of the mounting holes is perpendicular to the length direction of the positioning pins. By adopting the structure with the double rotation stopping surfaces, the positioning pin can not rotate, and the screw for connecting the positioning pin and the guide block can not rotate, so that the guide block can not rotate, the stability of the guide block is improved, and the precision of the whole structure is finally improved.
Furthermore, a placing groove corresponding to the square guide pillar in shape and size is formed in the movable mold, a plurality of threaded holes are formed in the square guide pillar, the square guide pillar is matched and fixed on the movable mold through the threaded holes and bolts, and the threaded holes are arranged in a staggered mode. Dislocation set is that the screw hole is not at the same horizontal direction of square guide pillar promptly, among the prior art, when the mould was operated the computer and is produced, it is great because of the mould dead weight, cover half and movable mould can all have the downward sloping of certain angle, thereby lead to the mould at the compound die in-process, the square guide pillar with keep away the dead slot and bump the phenomenon, make the square guide pillar bear very big lateral force, the bolt fastening mode of horizontal symmetry, because fixed position concentrates relatively, when the square guide pillar bears the impact, can't transmit away internal stress, finally lead to the side guide pillar fracture. Adopt the bolt fastening mode of dislocation arrangement in this application, because fixed position dispersion relatively can go out stress transmission between each bolt to the cracked risk of square guide post has been reduced.
Preferably, the protruding dimension of the guide block from the side wall of the clearance groove is 1mm, the protruding dimension of the wear-resisting plate from the side wall of the square guide pillar is 1mm, and the dimension of the side wall of the placing groove is smaller than the dimension of the side wall of the clearance groove and is 2 mm. In order to prevent that two lateral walls of square guide pillar all produce relative slip with the lateral wall contact of avoiding the dead slot, with the outstanding lateral wall 1mm setting of avoiding the dead slot of guide block, also set up antifriction plate outburst prescription guide pillar lateral wall 1mm, when the movable mould drives square guide pillar and when avoiding the motion of dead slot direction, in order to prevent that antifriction plate and the lateral wall of avoiding the dead slot from taking place to interfere, produce iron fillings and influence the structural accuracy, so 2 mm's the abdicating has been seted up at the lateral wall of avoiding the dead slot, if 2 mm's the abdicating space is not seted up, square guide pillar is pushing down the in-process, can take place to interfere with avoiding the dead slot, produce a large amount of iron fillings, influence the precision of whole mould.
Furthermore, the two ends of one side, protruding out of the side wall of the clearance groove, of the guide block are provided with chamfered angles, and the two ends, protruding out of the side wall of the square guide pillar, of the wear-resisting plate are provided with chamfered angles. When the fixed die and the movable die are assembled, the abrasion-resistant plates possibly abut against two end faces of the guide plate to cause the phenomenon of blocking, the abrasion-resistant plates are guided downwards by adopting a chamfer angle and a fillet at present, the smooth operation of the mechanism is guaranteed, and the opening and closing process of the die is stable.
Preferably, the clearance groove is vertically arranged on the fixed die. The clearance groove is formed in the fixed die, the square guide pillar moves downwards into the clearance groove during die assembly, the side wall of the clearance groove is parallel to the moving direction of the square guide pillar, and the smooth operation of the mechanism is guaranteed.
Furthermore, in order to prevent the head end of the square guide pillar from colliding with the clearance groove and improve the stability of movement, a chamfer is arranged at one end, far away from the movable mold, of the square guide pillar.
Preferably, after the movable mold and the fixed mold are assembled, the distance between one end of the square guide pillar, which is far away from the movable mold, and the bottom of the clearance groove is 5-10 mm. Keep away and leave the clearance in the dead slot, be used for storing iron fillings that antifriction plate and guide block produced because of the friction on the one hand, prevent on the one hand that square guide post head end and dead slot bottom from taking place the striking.
Has the advantages that: (1) the invention discloses a die square guide post mechanism which is more stable and reliable by using a mounting mode of fixing the square guide posts in a staggered manner.
(2) According to the invention, the structural form that the wear-resisting plates are arranged on the side surface is adopted, and only the wear-resisting plates need to be repaired, so that the repairing difficulty of a fitter is reduced, and the problems that the whole guide pillar needs to be repaired, the repairing is difficult and the time is wasted in the prior art are solved.
(3) The invention designs a double-sided rotation stopping positioning pin structure, so that the brass and graphite guiding and positioning device is more accurate.
(4) The invention can make the material selection of the guide pillar body more diversified, reduce the fracture rate of the guide pillar body and control the cost of the die.
Drawings
FIG. 1 is a front view of the structure of the guide post of the present invention;
FIG. 2 is a side view of the guide post structure of the present invention;
FIG. 3 is a schematic view of the guide block locating pin assembly of the present invention;
FIG. 4 is a schematic view of a guide block screw installation according to the present invention;
FIG. 5 is an exploded assembly view of the guide block locating pin of the present invention;
FIG. 6 is a schematic view of the overall structure of the present invention;
FIG. 7 is an enlarged view taken at A in FIG. 6;
1. a guide post body; 2. a threaded hole; 3. a wear plate; 4. a guide block; 5. positioning pins; 6. a screw; 7. mounting holes; 8. moving the mold; 9. fixing a mold; 10. an empty avoiding groove; 11. a fixing hole; 12. mounting grooves; 13. a placement groove; 14. chamfering; 15. chamfering; 16. and (6) rounding off.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
Example one
As shown in fig. 6, the die guide post structure comprises a fixed die 9 and a movable die 8 matched with the fixed die 9, wherein an empty avoiding groove 10 is formed in the fixed die 9, a guide block 4 is installed in the empty avoiding groove 10, and a guide post body is fixedly arranged on the movable die 8
1, guide pillar body 1 slides and sets up in keeping away the dead slot 10, the both sides of guide pillar body 1 be equipped with 4 corresponding antifriction plate 3 in position of guide block, antifriction plate 3 is outstanding the lateral wall setting of guide pillar body 1, guide block 4 is outstanding the lateral wall setting of keeping away dead slot 10, antifriction plate 3 with guide block 4 contact cooperation and guide pillar body 1 slides. The material of guide block 4 is brass and graphite, and antifriction plate 3's material is Cr12, and Cr12 wearability is than higher, and brass and graphite material, the self-lubricating is better, is difficult for producing the oxidation, influences the precision, and antifriction plate 3 passes through screw 6 to be fixed in the both sides of guide pillar body 1.
As shown in fig. 3 to 6, an installation groove 12 is formed on a side wall of the clearance groove 10, and the guide block 4 is installed in the installation groove 12. The guide block 4 is provided with a mounting hole 7, a screw 6 penetrates through the mounting hole 7 to be fixedly connected with the positioning pin 5, the positioning pin 5 is provided with a fixing hole 11, and the screw penetrates through the fixing hole 11 to fix the positioning pin 5 in the mounting groove 12. The number of the mounting holes 7 is two, and the length direction of the mounting holes 7 is perpendicular to the length direction of the positioning pins 5. Guide block 4 sets up in the both sides of keeping away empty groove 10, and when the compound die of fixed mould 9 and movable mould 8, guide block 4 and antifriction plate 3 contact guide pillar body 1 slides to improve the stationarity of mould motion. Guide block 4 passes mounting hole 7 and locating pin 5 fixed connection through hexagon socket head cap screw 6, and locating pin 5 is all installed at the both ends of guide block 4, the length direction of mounting hole 7 with the length direction of locating pin 5 is perpendicular, prevents that locating pin 5 from rotating or hexagon socket head cap screw 6 from taking place to rotate, leads to guide block 4 to take place the skew to influence overall structure's precision.
As shown in fig. 1, 2 and 6, a placing groove 13 corresponding to the shape and size of the guide pillar body 1 is formed on the movable die 8, a plurality of threaded holes 2 are formed on the guide pillar body 1, the guide pillar body 1 is fixed on the movable die 8 through the threaded holes 2 in a matching manner with bolts, and the threaded holes 2 are arranged in a staggered manner. This dislocation mounting means compares and arranges in traditional horizontal symmetry and has the advantage more, and guide pillar body 1 bears very big effort at the in-process that the compound die collided for a long time, and the design form of 2 horizontal symmetries of screw hole can make the bolt concentrate the setting relatively, can't go out stress transmission, the circumstances such as bolt looseness, guide pillar body 1 fracture appear, influence the holistic precision of mould. But the mounting means of bolt dislocation prevents to appear local stress concentration, can effectively transmit away the stress in the guide pillar body 1, reduces the not hard up possibility of bolt, has effectively reduced guide pillar body 1 and has appeared cracked risk under the long-term working condition, lets guide pillar body 1 operation more stable. Lifting holes which are convenient to mount and dismount and are arranged at the center and the bottom of the guide pillar body 1.
In order to enable the wear-resistant plate 3 and the guide block 4 to be in contact independently and prevent the clearance groove 10 from being in contact with the guide column body 1 to generate friction, the size of the guide block 4 protruding out of the side wall of the clearance groove 10 is 1mm, the size of the wear-resistant plate 3 protruding out of the side wall of the guide column body 1 is 1mm, and the size of the side wall of the placing groove 13 is 2mm smaller than that of the side wall of the clearance groove 10. Set up 2 mm's the space of stepping down on the lateral wall of clearance groove 10, if do not set up 2 mm's the space of stepping down, guide pillar body 1 is pushing down the in-process, can take place to interfere with the lateral wall of clearance groove 10, produces a large amount of iron fillings, influences the precision of whole mould, also can block simultaneously and die on guide block 4, and the power when the mould compound die is very big, if do not set up 2 mm's the space of stepping down, still can cause dangerous accident. Offer the space of stepping down of 2mm on the lateral wall of clearance groove 10, can make guide pillar body 1 move to the direction of clearance groove 10 smoothly, finally make guide block 4 and antifriction plate 3 contact, guide block 4 guides guide pillar body 1 to move, prevents to produce and rocks.
As shown in fig. 7, both ends of one side of the guide block 4 protruding the side wall of the clearance groove 10 are provided with chamfered angles 15, and both ends of one side of the wear plate 3 protruding the side wall of the guide pillar body 1 are provided with chamfered angles 16. When the fixed die 9 and the movable die 8 are assembled, the wear-resisting plates 3 possibly abut against two end faces of the guide plate to cause the clamping phenomenon, and even if the clamping phenomenon does not occur, the guide block 4 can be damaged for a long time, so that the precision of the whole die is influenced. Now, the method of chamfering 15 and chamfering 16 is adopted, the wear-resisting plate 3 is guided downwards, the smooth operation of the mechanism is guaranteed, and the opening and closing process of the die is stable.
As shown in fig. 6, the empty avoiding groove 10 is vertically arranged on the fixed mold 9. The empty avoiding groove 10 is formed in the fixed die 9, when the die is closed, the guide pillar body 1 moves downwards into the empty avoiding groove 10, the side wall of the empty avoiding groove 10 is parallel to the moving direction of the guide pillar body 1, and smooth operation of the mechanism is guaranteed.
And a chamfer 14 is arranged at one end of the guide pillar body 1, which is far away from the movable die 8. When the movable mold 8 and the fixed mold 9 are closed, the distance between one end of the guide pillar body 1, far away from the movable mold 8, and the bottom of the clearance groove 10 is 5-10 mm. 5-10mm clearance is left in clearance groove 10, is used for storing the iron fillings that wear-resisting plate 3 and guide block 4 produced because of the friction on the one hand, prevents that the head end of guide pillar body 1 and clearance groove 10 bottom from taking place the striking on the one hand, and the one end that movable mould 8 was kept away from to guide pillar body 1 sets up chamfer 14, has prevented effectively that guide pillar body 1 and clearance groove 10's up end from taking place the striking.
The working principle is as follows: when the fixed die 9 and the movable die 8 are closed, the movable die 8 drives the guide pillar body 1 to move towards the direction of the empty avoiding groove 10, the size of the side wall of the empty avoiding groove 10 is smaller than that of the side wall of the placing groove 13 and is 2mm, the wear-resisting plate 3 protrudes out of the guide pillar body 11mm, and the guide block 4 protrudes out of the side wall of the empty avoiding groove 10 and is 1mm, so that the side wall of the guide pillar body 1 cannot contact with the side wall of the empty avoiding groove 10 in the downward movement process of the guide pillar body 1, the wear-resisting plate 3 on the guide pillar body 1 can contact with the guide block 4, the guide pillar body 1 slides downward, the guide pillar body 1 is limited to move only in the vertical direction and cannot move left and right. Be provided with radius angle 16 and chamfer angle 15 respectively at the upper and lower both ends of antifriction plate 3 and guide block 4, at the in-process of guide pillar body 1 downstream, antifriction plate 3 has the probability card in the upper end of guide block 4, sets up chamfer angle 15 and chamfer angle 16, conveniently guides antifriction plate 3 downstream, the smooth and easy operation of guarantee mechanism. A chamfer 14 is arranged at one end, far away from the movable die 8, of the guide pillar body 1, after the die assembly of the movable die 8 and the fixed die 9 is completed, the distance between one end, far away from the movable die 8, of the guide pillar body 1 and the bottom of the empty avoiding groove 10 is 5-10mm, in the die assembly process, the phenomenon that the wear-resisting plate 3 collides with the guide block 4 or the fixed die 9 can occur, a gap of 5-10mm is reserved at the bottom of the empty avoiding groove 10, on one hand, scrap iron generated by collision is stored, on the other hand, the head end of the guide pillar body 1 is prevented from colliding with the empty avoiding groove 10, and the precision is prevented from being influenced. Because guide pillar body 1 plays the guide effect when the compound die, it is smooth and easy to guarantee to open and shut between movable mould 8 and the cover half 9, there is not the card pause phenomenon, so need repair guide pillar body 1, among the prior art, guide pillar body 1 is whole face and keeps away the lateral wall of dead slot 10 and carries out the contact slip, if need repair guide pillar body 1, need repair whole guide pillar body 1, and this application only need dismantle antifriction plate 3 then repair, time saving and labor saving, a large amount of time has been saved, simultaneously this application guarantees guide pillar body 1's toughness simultaneously, can carry out diversified selection of materials, the mould cost is reduced.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the term does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The utility model provides a mould guide pillar structure which characterized in that: the anti-abrasion guide device is characterized by comprising a fixed die (9) and a movable die (8) matched with the fixed die (9), wherein an empty avoiding groove (10) is formed in the fixed die (9), a guide block (4) is installed in the empty avoiding groove (10), a guide pillar body (1) is fixedly arranged on the movable die (8), the guide pillar body (1) is arranged in the empty avoiding groove (10) in a sliding mode, abrasion-resistant plates (3) corresponding to the guide block (4) in position are arranged on two sides of the guide pillar body (1), the abrasion-resistant plates (3) protrude out of the side wall of the guide pillar body (1), the guide block (4) protrudes out of the side wall of the empty avoiding groove (10), and the abrasion-resistant plates (3) are in contact fit with the guide block (4) and guide the guide pillar body (1) to slide.
2. The die guide post structure according to claim 1, wherein: an installation groove (12) is formed in the side wall of the empty avoiding groove (10), and the guide block (4) is installed in the installation groove (12).
3. The die guide post structure according to claim 2, wherein: the guide block (4) is provided with a mounting hole (7), a screw (6) penetrates through the mounting hole (7) and the positioning pin (5) to be fixedly connected, the positioning pin (5) is provided with a fixing hole (11), and the screw penetrates through the fixing hole (11) to fix the positioning pin (5) in the mounting groove (12).
4. The die guide post structure according to claim 3, wherein: the number of the mounting holes (7) is two, and the length direction of the mounting holes (7) is perpendicular to the length direction of the positioning pins (5).
5. The die guide post structure according to claim 1, wherein: the movable die (8) is provided with a placing groove (13) corresponding to the guide pillar body (1) in shape and size, the guide pillar body (1) is provided with a plurality of threaded holes (2), the guide pillar body (1) is fixed on the movable die (8) through the threaded holes (2) and a bolt in a matched mode, and the threaded holes (2) are arranged in a staggered mode.
6. The die guide post structure according to claim 5, wherein: the size that guide block (4) are outstanding keep away empty groove (10) lateral wall is 1mm, the size that antifriction plate (3) are outstanding guide pillar body (1) lateral wall is 1mm, the size of standing groove (13) lateral wall is less than keep away empty groove (10) lateral wall size is 2 mm.
7. The die guide post structure according to claim 1 or 6, wherein: two ends of one side, protruding out of the side wall of the clearance groove (10), of the guide block (4) are provided with chamfered angles (15), and two ends, protruding out of the side wall of the guide column body (1), of the wear-resisting plate (3) are provided with chamfered angles (16).
8. The die guide post structure according to claim 1, wherein: the empty avoiding groove (10) is vertically arranged on the fixed die (9).
9. The die guide post structure according to claim 1, wherein: and a chamfer (14) is arranged at one end of the guide pillar body (1) far away from the movable die (8).
10. The die guide post structure according to claim 1, wherein: when the movable mold (8) and the fixed mold (9) are assembled, the distance between one end of the guide pillar body (1) far away from the movable mold (8) and the bottom of the clearance groove (10) is 5-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010210587.4A CN113442376A (en) | 2020-03-24 | 2020-03-24 | Die guide pillar structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010210587.4A CN113442376A (en) | 2020-03-24 | 2020-03-24 | Die guide pillar structure |
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| Publication Number | Publication Date |
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| CN113442376A true CN113442376A (en) | 2021-09-28 |
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| CN202010210587.4A Pending CN113442376A (en) | 2020-03-24 | 2020-03-24 | Die guide pillar structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115107229A (en) * | 2022-06-29 | 2022-09-27 | 宁波富信模胚有限公司 | Die square guide pillar and processing method thereof |
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2020
- 2020-03-24 CN CN202010210587.4A patent/CN113442376A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115107229A (en) * | 2022-06-29 | 2022-09-27 | 宁波富信模胚有限公司 | Die square guide pillar and processing method thereof |
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