CN210679541U - Cutting sprue mechanism in mold - Google Patents
Cutting sprue mechanism in mold Download PDFInfo
- Publication number
- CN210679541U CN210679541U CN201920979141.0U CN201920979141U CN210679541U CN 210679541 U CN210679541 U CN 210679541U CN 201920979141 U CN201920979141 U CN 201920979141U CN 210679541 U CN210679541 U CN 210679541U
- Authority
- CN
- China
- Prior art keywords
- driving block
- cutter
- block
- inclined surface
- mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 25
- 238000005520 cutting process Methods 0.000 title claims abstract description 22
- 230000004323 axial length Effects 0.000 claims description 5
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model provides an in-mold gate cutting mechanism, which relates to the technical field of injection molds and comprises a cutter, wherein the cutter is coaxially fixed on a cutter holder, a driving block is vertically inserted on the cutter holder in a sliding manner, and a first inclined plane matched with the inclined plane of the cutter holder is arranged on the side surface of one end of the driving block; a push rod is vertically inserted into the driving block in a sliding manner, and a second inclined surface matched with the inclined surface of the driving block is arranged on the side surface of one end of the push rod; the one end that the blade holder was kept away from to the driving block is provided with reset spring, and reset spring keeps away from the one end of driving block and is fixed in on the apron. The problem of current injection mold course of working break off runner need artifical the completion to cause workman intensity of labour big, inefficiency is solved.
Description
Technical Field
The utility model relates to an injection mold technical field especially relates to a cut runner mechanism in mould.
Background
The injection mold can be used for processing plastic parts with complex structure, precise size and good internal quality in one step, and is widely applied to the production of plastic products, specifically, the plastic parts are injected into a mold cavity of the injection mold from an injection molding machine at high pressure and cooled and solidified to obtain a formed product. The pouring gate is an indispensable structure on the injection mold, and is an inlet and a channel for molten plastic to enter a mold cavity, after cooling and solidification, the pouring gate is firstly solidified and sealed, so that the functions of preventing feeding backflow and avoiding the phenomenon that the pressure of the mold cavity is reduced too fast to enable a formed product to shrink and dent can be realized, but the pouring gate is an unnecessary part on the product and needs to be separated from the product.
In the prior art, the mode of separating the pouring gate is usually to manually remove the product after the product is separated from the die cavity, a large amount of manual work is needed for subsequent processing, the labor intensity is increased, and the smoothness and the attractiveness of the appearance of the product cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned problem among the prior art, the utility model provides a cut runner mechanism in mould has solved current injection mold course of working and has interrupted the runner and need artifical the completion to cause the problem that workman intensity of labour is big, inefficiency.
In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows:
the in-mold cutting sprue mechanism comprises a cutter, wherein the cutter is coaxially fixed on a cutter holder, a driving block is vertically inserted on the cutter holder in a sliding manner, and a first inclined surface matched with the inclined surface of the cutter holder is arranged on the side surface of one end of the driving block; a push rod is vertically inserted into the driving block in a sliding manner, and a second inclined surface matched with the inclined surface of the driving block is arranged on the side surface of one end of the push rod; the one end that the blade holder was kept away from to the driving block is provided with reset spring, and reset spring keeps away from the one end of driving block and is fixed in on the apron.
Further, the first inclined surface is equal to the thickness of the gate along the axial length of the holder. The distance of the cutter holder moving axially under the driving of the inclined plane of the driving block is just equal to the thickness of the sprue, the sprue cutting accuracy is improved, and the appearance quality of a product is improved.
Further, the clearance between the cover plate and the driving block is larger than the length of the second inclined surface along the axial direction of the driving block. Therefore, the moving distance of the driving block in the axial direction can be completely converted into the deformation of the reset spring, and the accuracy of resetting of the driving block can be guaranteed.
Furthermore, a through chute is arranged on the tool apron, an inclined block axially inserted into the chute is arranged on the driving block, two opposite side surfaces on the inclined block are respectively matched with two side surface inclined surfaces of the chute, and the first inclined surface is one side surface of the inclined block.
Further, one end of the cutter holder adjacent to the cutter is provided with a stop part. The stop part can restrict the displacement of cutter when the cutter cuts the runner, prevents that the cutter displacement from excessively cutting the product excessively, and the stop part can also avoid the cutter excessively atress and damage as main load portion at cutter cutting runner in-process simultaneously, improves the life of cutter.
Furthermore, the second inclined plane is connected with the end face of the ejector rod through a circular arc surface in a smooth mode. Through smooth transition of the arc surface, the sliding process of the ejector rod in the driving block is more stable, the shaking of the mechanism is reduced, and the stability and the reliability are improved.
Furthermore, an annular boss is arranged in the middle of the driving block, and one end, far away from the cover plate, of the return spring abuts against the end face of the annular boss. The spring is extruded through the annular boss, so that the driving block can automatically recover to the initial position under the elastic force driving of the reset spring after losing the matching limitation of the second inclined plane, and the mechanism is convenient to reuse.
Furthermore, one end of the annular boss, which is adjacent to the return spring, is integrally formed with a cylindrical part, and the cylindrical part is inserted into the inner cavity of the return spring. During the cylinder portion inserted reset spring, can restrict the relative movement of drive block and reset spring in footpath, guarantee reset spring and drive block's the stability of practising the level, be convenient for exert the extrusion force to reset spring with cylinder portion integrated into one piece's annular boss, improve the reliability.
Further, the cover plate is provided with a mounting hole. The cover plate can be fixed through the mounting hole, resistance to the reset spring is convenient to apply, and the reset spring can deform when being extruded by the driving block.
The utility model has the advantages that: this mechanism simple structure, can the direct mount in the ejection system of current injection molding machine, the ejecting power with the help of ejection system drives ejector pin vertical direction and removes, the ejector pin passes through the removal of second inclined plane drive block horizontal direction, the drive block drives the blade holder vertical displacement again through first inclined plane, thereby the drive cutter cuts off the runner, through adding this mechanism, make the product accomplish the work of getting rid of runner promptly in drawing of patterns in-process, do not need to spend the manpower in addition, the manpower has been saved, the efficiency is improved, be favorable to realizing automation and large-scale production.
Because the cutter passes through the blade holder fixedly, and the blade holder need not let in the space at runner place, so the blade holder need not make into long and thin structure, and the locking part on the blade holder can also become the main load-carrying part of cutter, improves the load-carrying capacity of cutter, prolongs the life of cutter.
The moving distance of the ejector rod driving block in the horizontal direction can be controlled by controlling the axial length of the second inclined surface along the driving block, the moving distance of the cutter in the vertical direction can be controlled by controlling the axial length of the first inclined surface along the cutter holder, the control of the action process and the action precision is realized by the mechanical structure of the first inclined surface and the second inclined surface, the development, manufacture and maintenance cost can be reduced, and the linkage is high; the mechanism can be automatically and repeatedly used under the action of the return spring, and the automation is improved.
Drawings
Fig. 1 is a perspective view of an in-mold cutting gate mechanism.
Fig. 2 is an exploded view of an in-mold cutting gate mechanism.
FIG. 3 is a top view of the in-mold cutting gate mechanism.
Fig. 4 is a sectional view taken along a-a in fig. 3.
Wherein, 1, a cutter; 2. a tool apron; 21. a chute; 22. a stopper portion; 3. a drive block; 31. a first inclined plane; 32. an annular boss; 33. a cylindrical portion; 34. a sloping block; 4. a top rod; 41. a second inclined plane; 5. a return spring; 6. a cover plate; 61. and (7) installing holes.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes will be apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all inventions contemplated by the present invention are protected.
As shown in fig. 1 to 4, the in-mold cutting gate mechanism comprises a cutter 1, wherein the edge part of the cutter 1 is positioned at the top end of the cutter 1, and the blade of the cutter 1 is inserted into a cutter holder 2 and fixed through a pin. The tool apron 2 is a rectangular strip-shaped block, and a central axis parallel to the length direction is the axis of the tool apron 2. The end, close to the cutter 1, of the cutter holder 2 is provided with a stopping part 22, the stopping part 22 is integrally formed and is corresponding to the end face of the cutter holder 2, the shape of the end face corresponds to the shape of a product around the sprue, so that the end face of the cutter 1 just props against the bottom face of the product after the sprue is cut, and the cutter 1 is prevented from cutting other parts of the product.
The bottom end of the tool apron 2 is vertically inserted with a driving block 3 in a sliding and inserting manner, and a first inclined plane 31 matched with the inclined plane of the tool apron 2 is arranged on the side surface of one end of the driving block 3. The tool holder 2 on the opposite side of the cutter 1 is provided with a through chute 21, the driving block 3 is provided with an inclined block 34 inserted into the chute 21 along the axial direction, two opposite side surfaces of the inclined block 34 are respectively matched with two side surface inclined surfaces of the chute 21, and the first inclined surface 31 is one side surface of the inclined block 34. The first inclined surface 31 is equal to the thickness of the gate along the axial length of the holder 2.
The driving block 3 is vertically inserted with a mandril 4 in a sliding way, and the side surface of one end of the mandril 4 is provided with a second inclined surface 41 matched with the inclined surface of the driving block 3. The second inclined surface 41 is smoothly connected with the end surface of the ejector rod 4 through a circular arc surface.
The one end that blade holder 2 was kept away from to drive block 3 is provided with reset spring 5, and reset spring 5 keeps away from the one end of drive block 3 and is fixed in apron 6 on, is provided with mounting hole 61 on apron 6, and mounting hole 61 sets up one respectively in reset spring 5's both sides. The clearance between the cover plate 6 and the drive block 3 is greater than the length of the second inclined surface 41 in the axial direction of the drive block 3. The middle part of the driving block 3 is provided with an annular boss 32, and one end of the return spring 5 far away from the cover plate 6 is abutted against the end face of the annular boss 32. One end of the annular boss 32 adjacent to the return spring 5 is integrally formed with a cylindrical portion 33, and the cylindrical portion 33 is inserted into the inner cavity of the return spring 5.
As shown in fig. 3, the ejector rod 4 is fixed on an ejection system of the injection molding machine, when the ejector rod 4 is in an initial position, the ejector rod 4 and the through hole on the driving block 3 are eccentrically arranged, when the ejection system drives the ejector rod 4 to move upwards, firstly, the upper end surface of the ejector rod 4 contacts with the bottom surface of the driving block 3, the ejector rod 4 continues to move upwards, the inclined surface of the inner wall of the through hole on the driving block 3 is closely matched with the second inclined surface 41, and as the ejector rod 4 continues to move upwards, the driving block 3 can horizontally move towards the side where the cover plate 6 is located and extrude the reset spring 5 to deform under the extrusion action of the second inclined surface.
Along with the horizontal left movement of the driving block 3, the first inclined surface 31 extrudes the cutter holder 2 to move upwards, so that the cutter 1 is cut into from the bottom end of the sprue, the stroke of the first inclined surface 31 is finished, the sprue is just cut off, the stroke of the second inclined surface 41 is also finished, the cylindrical part on the ejector rod 4 enters the through hole on the driving block 3, the ejector rod 4 does not horizontally move the driving block 3 any more, other parts in the mechanism cannot be driven to move continuously in the process of continuously moving the ejector rod 4 upwards, and the ejection frequency and the ejection stroke of the cutter 1 are reduced. When the ejection system of the injection molding machine is reset, the ejector rod 4 moves to the initial position, and the reset spring 5 loses the extrusion reset of the driving block 3, so that the driving block 3 is driven to return to the initial position to wait for the next use.
Claims (9)
1. The in-mold gate cutting mechanism is characterized by comprising a cutter (1), wherein the cutter (1) is coaxially fixed on a cutter holder (2), a driving block (3) is vertically inserted on the cutter holder (2) in a sliding and inserting mode, and a first inclined plane (31) matched with the inclined plane of the cutter holder (2) is arranged on the side face of one end of the driving block (3);
a push rod (4) is vertically inserted into the driving block (3) in a sliding and inserting mode, and a second inclined surface (41) matched with the inclined surface of the driving block (3) is arranged on the side surface of one end of the push rod (4);
one end, far away from the cutter holder (2), of the driving block (3) is provided with a return spring (5), and one end, far away from the driving block (3), of the return spring (5) is fixed on the cover plate (6).
2. The in-mold cutting gate mechanism of claim 1, wherein the first ramp (31) has an axial length along the seat (2) equal to a gate thickness.
3. The in-mold cutting gate mechanism according to claim 1, wherein a clearance between the cover plate (6) and the drive block (3) is greater than a length of the second inclined surface (41) in an axial direction of the drive block (3).
4. The in-mold cutting gate mechanism according to claim 1, wherein a chute (21) is formed through the tool holder (2), a swash block (34) axially inserted into the chute (21) is formed on the driving block (3), two opposite side surfaces of the swash block (34) are respectively matched with two side surface inclined surfaces of the chute (21), and the first inclined surface (31) is one side surface of the swash block (34).
5. The in-mold cutting gate mechanism according to claim 1, wherein an end of the blade holder (2) adjacent to the cutting blade (1) is provided with a stopper (22).
6. The in-mold cutting gate mechanism according to claim 1, wherein the second inclined surface (41) is smoothly connected with the end surface of the ejector pin (4) through a circular arc surface.
7. The in-mold cutting gate mechanism according to claim 1, characterized in that an annular boss (32) is provided in the middle of the driving block (3), and one end of the return spring (5) far away from the cover plate (6) abuts on the end surface of the annular boss (32).
8. The in-mold cutting gate mechanism according to claim 7, wherein a cylindrical portion (33) is integrally formed at an end of the annular boss (32) adjacent to the return spring (5), the cylindrical portion (33) being inserted into an inner cavity of the return spring (5).
9. The in-mold cutting gate mechanism according to claim 1, wherein the cover plate (6) is provided with a mounting hole (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920979141.0U CN210679541U (en) | 2019-06-27 | 2019-06-27 | Cutting sprue mechanism in mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920979141.0U CN210679541U (en) | 2019-06-27 | 2019-06-27 | Cutting sprue mechanism in mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210679541U true CN210679541U (en) | 2020-06-05 |
Family
ID=70893903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920979141.0U Expired - Fee Related CN210679541U (en) | 2019-06-27 | 2019-06-27 | Cutting sprue mechanism in mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210679541U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116551942A (en) * | 2023-04-11 | 2023-08-08 | 台州市黄岩炜大塑料机械有限公司 | A mold gate and product automatic separation structure |
| CN117464937A (en) * | 2023-12-27 | 2024-01-30 | 宁波兴利汽车模具有限公司 | Pouring gate in-mold cutting mechanism and injection mold using same |
-
2019
- 2019-06-27 CN CN201920979141.0U patent/CN210679541U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116551942A (en) * | 2023-04-11 | 2023-08-08 | 台州市黄岩炜大塑料机械有限公司 | A mold gate and product automatic separation structure |
| CN117464937A (en) * | 2023-12-27 | 2024-01-30 | 宁波兴利汽车模具有限公司 | Pouring gate in-mold cutting mechanism and injection mold using same |
| CN117464937B (en) * | 2023-12-27 | 2024-04-05 | 宁波兴利汽车模具有限公司 | Pouring gate in-mold cutting mechanism and injection mold using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210679541U (en) | Cutting sprue mechanism in mold | |
| CN102248644A (en) | Automatic gate cutting mechanism in multi-cavity mould | |
| CN211994023U (en) | Sprue cutting device based on injection mold | |
| CN219360184U (en) | Automatic water gap cutting structure in mold | |
| CN217073167U (en) | Forming die and sealing ring injection molding equipment with same | |
| CN105751436A (en) | Injection-molding mould for television plastic housing | |
| CN220562074U (en) | Mobile phone outer frame forming die convenient for demolding | |
| CN218519086U (en) | Circular shell injection mold | |
| CN111113819A (en) | Mould ingate shearing device | |
| CN216263288U (en) | Rivet type electrical contact activity forming die subassembly | |
| CN105415608A (en) | Automatic sprue cut-off device | |
| CN221475351U (en) | Automatic gate shearing mechanism | |
| CN215550597U (en) | Mould forming structure of automobile shell part | |
| CN2540272Y (en) | Side sprue automatic cutting-off injection mould | |
| CN221518653U (en) | Side gate injection mold capable of cutting off and separating in mold | |
| CN221049103U (en) | A brake pad processing mold | |
| CN215320411U (en) | Automatic change filling device that moulds plastics | |
| CN222448587U (en) | Wedge hank tooth is from reset mould | |
| CN218314962U (en) | Mould structure of automatic cutout mouth of a river in mould | |
| CN222448149U (en) | A new type of die steel for shearing tools | |
| CN222844633U (en) | Cavity structure of runner-free injection mold | |
| CN219522937U (en) | Injection mold ejection mechanism | |
| CN213440909U (en) | Intelligent portable dust collector mold | |
| CN220242279U (en) | Automatic separating mechanism for pipe fitting mold gate and product | |
| CN216139347U (en) | Gate internally-cutting structure and injection mold with same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200605 |