CN220574508U - Die locating pin fixing structure and thermal forming die - Google Patents
Die locating pin fixing structure and thermal forming die Download PDFInfo
- Publication number
- CN220574508U CN220574508U CN202321892529.XU CN202321892529U CN220574508U CN 220574508 U CN220574508 U CN 220574508U CN 202321892529 U CN202321892529 U CN 202321892529U CN 220574508 U CN220574508 U CN 220574508U
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- locating pin
- lower die
- pin
- pin fixing
- locating
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- 238000003856 thermoforming Methods 0.000 claims abstract description 14
- 238000004512 die casting Methods 0.000 claims description 25
- 238000009434 installation Methods 0.000 claims description 11
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000002788 crimping Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model provides a die locating pin fixing structure and a thermoforming die, comprising a fourth lower die insert, a third locating pin and a locating pin fixing piece; a positioning pin mounting groove corresponding to a positioning structure of a product to be produced is formed in the fourth lower die insert; the inserting part of the third locating pin is in inserting fit limit setting with the locating pin mounting groove; the part of the third locating pin protruding out of the fourth lower die insert is correspondingly arranged with a locating structure of a product to be produced; the outer side surface of the plug-in part of the third locating pin is provided with a clamping groove; the locating pin fixing piece is in plug-in fit with the clamping groove to limit, and the locating pin fixing piece is in locking fit with the fourth lower die insert. The utility model has the advantages that the broken locating pin is easy to take out, the replacement is simpler, the workload is reduced, the influence on the use of the thermoforming mould is reduced, and the supply influence of the part products is reduced.
Description
Technical Field
The utility model relates to the technical field of mold manufacturing, in particular to a mold locating pin fixing structure and a thermoforming mold, and particularly relates to a mold locating pin fixing structure for thermoforming.
Background
When the thermal forming die is used for manufacturing products, some products have the design of a positioning structure, and the positioning structure which is closer to the products is finished by positioning pins arranged on the thermal forming die, so that the design requirements of the products are met.
At present, referring to fig. 1, a die locating pin fixing structure includes a first locating pin 1 and a first lower die insert 2, wherein an external thread is provided on an outer circumferential surface of the bottom of the first locating pin 1 by using an external thread fixing manner, then a threaded hole matched with the external thread is provided at a position corresponding to the first lower die insert 2, and finally the bottom of the first locating pin 1 is directly screwed into the first lower die insert 2.
With respect to the above-mentioned related art, the inventors considered that when a feeding piece is put into a mold in a production process of a thermoforming mold and a feeding piece put position is deviated to possibly break the first positioning pin 1, a broken portion is blocked in a screw hole and is difficult to be pulled out, and replacement is troublesome, and the workload is increased and the influence on the use of the thermoforming mold is large, and the supply influence of parts is large.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide a die locating pin fixing structure and a thermal forming die.
The utility model provides a die locating pin fixing structure, which comprises a fourth lower die insert, a third locating pin and a locating pin fixing piece;
a locating pin mounting groove corresponding to a locating structure of a product to be produced is formed in the fourth lower die insert;
the inserting part of the third positioning pin is in inserting fit limit setting with the positioning pin mounting groove;
the part of the third locating pin protruding out of the fourth lower die insert is correspondingly arranged with a locating structure of a product to be produced;
a clamping groove is formed in the outer side face of the plug-in part of the third positioning pin;
the locating pin fixing piece is in plug-in fit with the clamping groove to be limited, and the locating pin fixing piece is in locking fit with the fourth lower die insert.
Preferably, the fixing structure further comprises a lower die casting body;
the fourth lower die insert is arranged on the lower die casting body;
the lower die casting body is arranged corresponding to the upper die casting body of the die.
Preferably, the fourth lower die insert is arranged corresponding to the upper die insert of the die, and the upper die insert is arranged on the upper die casting body of the die.
Preferably, the fixing structure further comprises a locating pin fixing clamping plate;
the positioning pin fixing clamping plate is arranged on the positioning pin fixing piece, and the positioning pin fixing piece is spliced and matched with the limiting clamping groove through the positioning pin fixing clamping plate;
and a moving hole for the locating pin fixing clamping plate to move along the direction of the inserting and pulling clamping groove is formed in the fourth lower die insert.
Preferably, the locating pin fixing member comprises a locating pin side locking screw;
and the locating pin side locking screw is locked and fixed with the fourth lower die insert through threaded connection.
Preferably, a relief groove is formed in the fourth lower die insert;
the positioning pin fixing piece is embedded into the fourth lower die insert;
the head of the positioning pin fixing piece is in plug-in fit with the clamping groove;
the tail of the locating pin fixing piece is arranged in the abdication groove.
Preferably, the third locating pin is a locating pin made of SKD61 material.
Preferably, the third positioning pin is a positioning pin subjected to quenching treatment.
Preferably, the plugging part of the third positioning pin is in transition fit with the positioning pin mounting groove.
The utility model provides a thermal forming die which comprises a die locating pin fixing structure.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, the third positioning pin is inserted and limited with the positioning pin mounting groove, the clamping groove is inserted and limited with the positioning pin fixing piece, and the positioning pin fixing piece and the fourth lower die insert are matched and locked, if the third positioning pin is broken due to deviation of a feeding material sheet, the positioning pin fixing piece is detached from the fourth lower die insert, and then the positioning pin fixing piece leaves the clamping groove, so that the broken third positioning pin can be taken out from the positioning pin mounting groove for replacement, the broken positioning pin is easy to take out, the replacement is simpler, the workload is reduced, the influence on the use of a die is reduced, and the supply influence of a part product is reduced;
2. according to the utility model, the locating pin mounting groove and the inserting part of the third locating pin are in transition fit, no gap exists between the locating pin mounting groove and the product, no trace is generated due to the notch of the locating pin mounting groove, the molded surface of the product is protected, and the forming and quality of the part product are not influenced; the third positioning pin can be conveniently inserted into the positioning pin mounting groove by adopting the structure, so that the mounting efficiency of the forming fixing structure is effectively improved;
3. the third locating pin adopts the locating pin subjected to quenching treatment for increasing the hardness and the heat resistance, and if the temperature of the material sheet entering the die is higher after heating, the position where the third locating pin is in contact with the material sheet is required to have higher hardness and heat resistance.
Drawings
Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a cross-sectional view of a prior art first type of thermoforming mold dowel pin securing structure;
FIG. 2 is a cross-sectional view of a prior art second type of thermoforming mold pin fixture;
FIG. 3 is a cross-sectional view of a third prior art thermoforming mold pin fixture;
FIG. 4 is a schematic view of the structure of the positioning pin and the positioning pin side lock of the present utility model after being engaged;
FIG. 5 is a schematic view of the mounting orientation of the dowel pin of the present utility model prior to mating with a dowel pin side lock;
FIG. 6 is a cross-sectional view of the mold pin securing structure of the present utility model;
fig. 7 is a schematic view of the alignment pin of the present utility model mated with a side lock screw.
The figure shows:
first locating pin 1 second locating pin 6 locating pin side lock screw 100
First lower die insert 2 third lower die insert 7 fourth lower die insert 200
Third locating pin 300 of lower die casting 8 of hole flanging locating pin 3
First screw 4 second screw 9
Second lower die insert 5 locating pin mounting plate 10
Detailed Description
The present utility model will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present utility model.
The embodiment of the utility model discloses a positioning pin fixing structure for a thermoforming mold, which comprises a lower die casting body, a fourth lower die insert 200, a third positioning pin 300 and a positioning pin fixing piece as shown in fig. 4 and 5.
As shown in fig. 6, a locating pin installation groove (also called a locating pin installation hole) corresponding to a locating structure of a product to be produced is formed on the fourth lower die insert 200; the dowel mounting groove may be provided on the profile of the fourth lower die insert 200. The plugging part of the third locating pin 300 is plugged with the locating pin mounting groove in a matched and limiting manner; the portion of the third positioning pin 300 protruding from the fourth lower die insert 200 is provided corresponding to the positioning structure of the product to be produced; the third positioning pin 300 is used to form a positioning structure for a product to be produced.
As shown in fig. 6 and 7, a clamping groove is formed on the outer side surface of the plugging portion of the third positioning pin 300; that is, the depth direction of the clamping groove is not in the same straight line with the length direction of the positioning pin. The locating pin fixing piece is in plug-in fit limit setting with the clamping groove, and the locating pin fixing piece is in locking fit setting with the fourth lower die insert 200.
The fourth lower die insert 200 is mounted on the lower die casting body; the lower die casting body is arranged corresponding to the upper die casting body of the die. The fourth lower die insert 200 is disposed in correspondence with the upper die insert of the die, and the upper die insert is mounted on the upper die casting body of the die.
The positioning pin fixing structure for the thermoforming die comprises a lower die casting body corresponding to an upper die casting body of the thermoforming die, a lower die insert corresponding to an upper die insert of the thermoforming die, a positioning pin (of a positioning structure) used for being matched with a pin hole formed in the upper die insert to be pressed to form a product to be produced, and a positioning pin fixing clamping plate used for positioning the positioning pin inserted in a positioning pin mounting hole.
The lower die insert is arranged on the lower die casting body, and a positioning pin mounting hole is formed in a position of the lower die insert corresponding to a positioning (pin) structure of a product to be produced; the locating pin is inserted into the locating pin mounting hole, and a clamping groove is formed in the peripheral surface of the lower part or the middle part of the locating pin; and screw mounting bottom holes for fixing the side locks of the positioning pins are formed in positions of the lower die inserts corresponding to the clamping grooves. The locating pin fixing clamping plate is used for locating the hole flanging locating pin spliced in the hole flanging locating pin installation hole, and a yielding groove for yielding the locating pin fixing clamping plate is formed in the position, corresponding to the clamping groove, of the lower die casting body. The locating pin set screw sets up in the groove of stepping down, and the locating pin card is in the inserted, has seted up the screw hole in the position that the draw-in groove corresponds, and during fixed mounting, the side lock of selecting the screw is fixed. And installing the locating pin on the lower die insert body. The positioning pin side lock screw 100 is disposed in the relief groove such that one end thereof is inserted into the insert, and the positioning pin is fixed in the mounting hole.
The dowel pin fixture includes a dowel pin side lock screw 100; the dowel side lock screw 100 is locked and fixed to the fourth lower die insert 200 by threaded connection. Namely, the dowel-side lock screw 100 is screwed with a threaded bottom hole in the fourth lower die insert 200. The locating pin side locking screw adopts a standard component. That is, the locating pin side lock screw 100 is a standard component, the material cost is low, and the length thereof can be adjusted according to the installation space of the die.
The fourth lower die insert 200 is provided with a moving hole for moving the positioning pin fixing clamping plate along the direction of the inserting and pulling clamping groove. The moving hole is a threaded bottom hole. The moving hole is communicated with the clamping groove.
A relief groove is formed in the fourth lower die insert 200; the locating pin fixture is embedded in the fourth lower die insert 200; the head of the locating pin fixing piece is spliced and matched with the clamping groove; the tail of the locating pin fixing piece is arranged in the abdication groove.
The third positioning pin 300 is manufactured by using SKD61 material and is subjected to quenching treatment. The positioning pin is made of SKD61 material and is used for increasing the hardness and heat resistance through quenching treatment, and because the temperature of the heated material sheet entering the hot forming die is higher, the position where the positioning pin is in contact with the plate is required to have higher hardness and heat resistance.
The plugging part of the third positioning pin 300 is in transition fit with the positioning pin mounting groove. The locating pin is in clearance fit with the locating pin fixing screw. The locating pin is in transition fit with the locating pin mounting hole, and the locating pin can be conveniently inserted into the locating pin mounting hole by adopting the structure, so that the mounting efficiency of the forming fixing structure is effectively improved.
In addition, the fixing structure further comprises a locating pin fixing clamping plate; the positioning pin fixing clamping plate is arranged on the positioning pin fixing piece, and the positioning pin fixing piece is spliced and matched with the limiting clamping groove through the positioning pin fixing clamping plate; for example, the locating fixing clamping plate is arranged at the head part of the locating pin fixing piece.
The embodiment of the utility model also discloses a thermal forming die, which comprises a die locating pin fixing structure.
The die locating pin fixing structure in fig. 1: the material of the first lower die insert 2 of the thermal forming die is good, the hardness of the first lower die insert 2 after heat treatment is high, an assembler possibly leaks out of the threaded hole on the first lower die insert 2 before the heat treatment of the first lower die insert 2, the hardness of the die after heat treatment is too hard to make the threaded hole, and therefore the die cannot be used due to incapability of positioning, and resources are wasted.
Referring to fig. 2, the mold locating pin fixing structure includes a hole flanging locating pin 3, a first screw 4 and a second lower mold insert 5, wherein a threaded bottom hole (also called a threaded bottom groove) and a mounting hole (also called a mounting groove) are formed according to a numerical control given point before the second lower mold insert 5 is heat treated in such a manner that the side surface of the hole flanging locating pin 3 is fixed by using the first screw 4 of one M6, then the hole flanging locating pin 3 is mounted in the mounting hole of the second lower mold insert 5, and then the first screw 4 is connected with the threaded bottom hole of the second lower mold insert 5 by using the first screw 4 of one M6, and the first screw 4 is pressed on a part of the side body of the hole flanging locating pin 3, namely, the hole flanging locating pin 3 is pressed by using the first screw 4, so that the hole flanging locating pin 3 is fixed in the second lower mold insert 5.
The die locating pin fixing structure in fig. 2: the second lower die insert 5 is easy for an assembler to leak out the threaded bottom hole of M6 before the heat treatment, and the threaded bottom hole is not machined after the heat treatment of the second lower die insert 5. Only the fixing mode of the hole flanging locating pin 3 can be changed, so that the production of parts is influenced by the later-stage die processing period; although the prior installation is simpler and easier to operate, the first screw 2 is easy to slide in the threaded bottom hole because the threaded bottom hole is closer to the installation hole of the hole flanging locating pin 3, so that the first screw 2 is easy to be unstable in crimping when crimping the side body of the hole flanging locating pin 3, even the hole flanging locating pin 3 is easy to break in the production process, the replacement of the hole flanging locating pin is relatively troublesome, and the supply period of parts is affected; in addition, the above fixing manner has a limitation that a mounting hole with a diameter of 11mm needs to be dug on the molded surface of the second lower die insert 5, when a product is produced, a gap exists between the mounting hole and the product, and the molded surface of the product may be marked because of the orifice of the mounting hole, so that the molded surface of the product may be damaged, the formability of the part is affected, and the quality of the product of the part is further affected.
The utility model adopts the locating pin fixing piece to insert the clamping groove for limiting, and the locating pin fixing piece and the fourth lower die insert 200 are locked, so that the side body of the third locating pin 300 is not influenced, and further, if the third locating pin 300 is easy to replace, and the locating pin mounting groove and the locating pin are matched, no gap exists between the locating pin mounting groove and a product, no trace is generated due to the notch of the locating pin mounting groove, the molded surface of the product is protected, and the forming and quality of the part product are not influenced.
Referring to fig. 3, the mold locating pin fixing structure includes a second locating pin 6, a third lower mold insert 7, a lower mold casting 8, a second screw 9, and a locating pin mounting plate 10; the second locating pin 6 is arranged on the bottom surface of the lower die base (lower die casting 8) in a mode of installing plate bottom locking screws. The third lower die insert 7 and the lower die casting 8 are correspondingly arranged, after the third lower die insert 7 is mounted on the lower die casting 8, the second positioning pin 6 is fixed on the positioning pin mounting plate 10 by using a part of the second screw 9 of the M8, namely, the part of the second screw 9 of the M8 is in threaded connection with the second positioning pin 6 through the positioning pin mounting plate 10, the second positioning pin 6 and the positioning pin mounting plate 10 are combined together, the lower die holder is turned over, the second positioning pin 6 is passed through the lower die holder (the lower die casting 8) and the third lower die insert 7 from the bottom, and the positioning pin mounting plate 10 is fixed on the lower die holder (the lower die casting 8) by using the other part of the second screw 9 of the M8, namely, the other part of the second screw 9 of the M8 is in threaded connection with the lower die casting 8 through the positioning pin mounting plate 10.
The die locating pin fixing structure in fig. 3: in view of the design of the front-stage die, the mounting space of the fixing mode in the front-stage design and the mounting space in the later stage are relatively narrow, the mounting surface of the positioning pin mounting plate 10 is higher than the bottom surface of the lower die seat by a cutter with the diameter of 63mm in the later-stage die processing, and the space is insufficient and the processing is difficult. If the locating pin produces the fracture in production process, need come out the mould from the lathe earlier, then need overturn the mould and dismantle and reinstallate the locating pin from the bottom, increased assembly workman's maintenance time, reduced work efficiency to supply the influence to the part is great.
If the third locating pin 300 breaks in the production process, the die is convenient to detach and replace, the die does not need to be overturned to be detached and installed, the maintenance time of assembly workers is shortened, the working efficiency is improved, and the influence on the supply of parts is reduced.
The utility model has simple and convenient installation, can replace the complicated installation mode in the existing mould structure, can greatly improve the mould installation and maintenance efficiency of operators no matter in the initial stage or the later stage of mould assembly, shortens the project period and improves the production efficiency. The utility model can avoid the problems of die structure change or reprocessing and manufacturing of the lower die insert caused by thread bottom hole sliding wire, and solves a series of problems of difficult replacement in the later die production process. The fixing mode of the locating pin has the advantages of convenience in installation, simple structure, high reliability, accurate location and the like. The utility model is simple and clear, and can directly avoid the problem that the threaded bottom hole is omitted by the lower die insert in the earlier stage and the later stage is difficult to add.
In the description of the present application, it should 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 the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.
The foregoing describes specific embodiments of the present utility model. It is to be understood that the utility model is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the utility model. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. The die positioning pin fixing structure is characterized by comprising a fourth lower die insert (200), a third positioning pin (300) and a positioning pin fixing piece;
a locating pin mounting groove corresponding to a locating structure of a product to be produced is formed in the fourth lower die insert (200);
the inserting part of the third locating pin (300) is in inserting fit limit setting with the locating pin mounting groove;
the part of the third locating pin (300) protruding out of the fourth lower die insert (200) is correspondingly arranged with a locating structure of a product to be produced;
a clamping groove is formed in the outer side face of the plug-in part of the third positioning pin (300);
the locating pin fixing piece is in plug-in fit limit setting with the clamping groove, and the locating pin fixing piece is in locking fit setting with the fourth lower die insert (200).
2. The mold pin securing structure according to claim 1, further comprising a lower mold casting body;
the fourth lower die insert (200) is arranged on the lower die casting body;
the lower die casting body is arranged corresponding to the upper die casting body of the die.
3. The mold locating pin fixing structure according to claim 1, wherein the fourth lower die insert (200) is provided corresponding to an upper die insert of the mold, and the upper die insert is mounted on an upper die casting body of the mold.
4. The mold pin securing structure according to claim 1, further comprising a pin securing clip;
the positioning pin fixing clamping plate is arranged on the positioning pin fixing piece, and the positioning pin fixing piece is spliced and matched with the limiting clamping groove through the positioning pin fixing clamping plate;
and a moving hole for moving the locating pin fixing clamping plate along the direction of the inserting and pulling clamping groove is formed in the fourth lower die insert (200).
5. The mold pin fixing structure according to claim 1, wherein the pin fixing member includes a pin side lock screw (100);
the locating pin side locking screw (100) and the fourth lower die insert (200) are locked and fixed through threaded connection.
6. The mold locating pin fixing structure according to claim 1, wherein a relief groove is provided on the fourth lower mold insert (200);
the locating pin fixing piece is embedded into the fourth lower die insert (200);
the head of the positioning pin fixing piece is in plug-in fit with the clamping groove;
the tail of the locating pin fixing piece is arranged in the abdication groove.
7. The mold pin fixing structure according to claim 1, wherein the third positioning pin (300) is a positioning pin manufactured using SKD61 material.
8. The mold pin fixing structure according to claim 1, wherein the third positioning pin (300) is a positioning pin subjected to quenching treatment.
9. The mold pin fixing structure according to claim 1, wherein the insertion portion of the third positioning pin (300) is in transition fit with the positioning pin installation groove.
10. A thermoforming mold comprising the mold pin securing structure of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321892529.XU CN220574508U (en) | 2023-07-18 | 2023-07-18 | Die locating pin fixing structure and thermal forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321892529.XU CN220574508U (en) | 2023-07-18 | 2023-07-18 | Die locating pin fixing structure and thermal forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220574508U true CN220574508U (en) | 2024-03-12 |
Family
ID=90122006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321892529.XU Active CN220574508U (en) | 2023-07-18 | 2023-07-18 | Die locating pin fixing structure and thermal forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220574508U (en) |
-
2023
- 2023-07-18 CN CN202321892529.XU patent/CN220574508U/en active Active
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