CN214000414U - Die sinking insurance - Google Patents

Die sinking insurance Download PDF

Info

Publication number
CN214000414U
CN214000414U CN202022197525.2U CN202022197525U CN214000414U CN 214000414 U CN214000414 U CN 214000414U CN 202022197525 U CN202022197525 U CN 202022197525U CN 214000414 U CN214000414 U CN 214000414U
Authority
CN
China
Prior art keywords
locking
die
top plate
block
upper die
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.)
Active
Application number
CN202022197525.2U
Other languages
Chinese (zh)
Inventor
朱灵勇
俞周艳
周航愉
李龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Huazhong Moulding Co ltd
Original Assignee
Ningbo Huazhong Moulding Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ningbo Huazhong Moulding Co ltd filed Critical Ningbo Huazhong Moulding Co ltd
Priority to CN202022197525.2U priority Critical patent/CN214000414U/en
Application granted granted Critical
Publication of CN214000414U publication Critical patent/CN214000414U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The application discloses a die sinking safety device, which comprises an upper die, a lower die, a locking rod and a locking block, wherein the outer side wall of the upper die is provided with a containing hole, and the locking block is arranged in the containing hole in a sliding manner; the locking rod is arranged on the lower die, and a locking groove is formed in the surface, close to the accommodating hole, of the locking rod; and when the outer end of the locking block slides into the locking groove, the upper die and the lower die are limited to be separated. The locking between the upper die and the lower die can be realized by sliding the locking block outwards to enable the outer end of the locking block to slide into the locking groove; the locking block slides inwards to separate the outer end of the locking block from the locking groove, so that the locking between the upper die and the lower die can be released; and the structure is simple, the layout is reasonable, the cost is low, the installation is convenient, and the operation and the control are easy.

Description

Die sinking insurance
Technical Field
The application relates to the field of dies, in particular to a double-insurance die.
Background
At present, an injection mold is widely applied to the fields of aviation, electronics, machinery, ships, automobiles and the like, and mainly comprises an upper mold and a lower mold, wherein a mold cavity is formed between the upper mold and the lower mold, a pouring channel communicated with the mold cavity is arranged on the upper mold or the lower mold, liquid raw materials are injected into the mold cavity through the pouring channel, and products with specific shapes and sizes can be formed after the liquid raw materials are cooled and molded.
However, for some products with complicated shape structures, it is often difficult to achieve the requirements by using the conventional upper die and lower die. As shown in fig. 1, in an oil cover lid (the oil cover lid is denoted by reference numeral 100) on a yacht engine, during injection molding, a relief hole (the relief hole is denoted by reference numeral 101) and a plurality of screw mounting holes (the screw mounting holes are denoted by reference numeral 102) need to be formed on a side surface, so that a plurality of side core pulling mechanisms need to be arranged, and before mold opening, the side core pulling mechanisms are firstly pulled out, and then demolding is completed.
In the prior art, each side core needs to be driven by an air cylinder, the core pulling directions of the side core are different, the assembly difficulty between the air cylinder and the side core is high, the control on the air cylinder is complex, the operation is complex, and the investment cost in the early stage and the maintenance cost in the later stage are higher.
SUMMERY OF THE UTILITY MODEL
An aim at of this application provides a simple structure, and is rationally distributed, with low costs, and the installation of being convenient for is easily controlled, and to the few dual fail-safe mould of cylinder demand.
Another object of this application lies in a simple structure, rationally distributed, with low costs, the die sinking insurance of being convenient for installation, and easily controlling.
Another object of the present application is to provide a mold clamping safety device that is simple in structure, reasonable in layout, low in cost, easy to install, and easy to operate and control.
In order to achieve the above purposes, the technical scheme adopted by the application is as follows: a double-safety die comprises an upper die, a lower die, a die opening safety, a die closing safety, a top plate, a plurality of side drawing blocks and a plurality of drawing rods, wherein the upper ends of the drawing rods are arranged on the top plate, and the lower ends of the drawing rods are provided with limit slide rails which are obliquely arranged; the side pumping block is arranged in the upper die in a sliding manner, a forming cavity is defined among the side pumping block, the upper die and the lower die, and one end of the side pumping block, which is far away from the forming cavity, is arranged in the limiting slide rail in a sliding manner; the top plate is movably arranged above the upper die along the up-down direction, and the side pumping block can be forced to slide in and out of the molding cavity by moving the top plate up and down; the die opening fuse is arranged between the upper die and the lower die, and the upper die and the lower die are limited to be separated before the side pulling block slides out of the forming cavity; the mold closing fuse is arranged between the top plate and the upper mold, and can limit the side pumping block from sliding into the molding cavity before the upper mold and the lower mold are closed.
Preferably, a first elastic piece is arranged between the top plate and the upper die and used for forcing the top plate to be separated from the upper die. The advantages are that: under the action of the first elastic piece, downward pressure needs to be applied to the top plate to balance the elastic force of the first elastic piece, so that the top plate is ensured to be in a static state; therefore, before the mold opening, when the pressure applied to the top plate is removed or the top plate is moved upwards, the first elastic piece can limit the upper mold to move upwards along with the top plate, so that the mold opening operation is carried out after the core pulling operation is finished.
Preferably, the first elastic member is a nitrogen spring. The advantages are that: the nitrogen spring has the advantages of small volume, large elasticity, long stroke, stable work, long service life, gentle elasticity curve, no need of pre-tightening and the like, and has the advantages of difficult work of conventional elastic components such as metal springs, rubber, air cushions and the like, so that the design and manufacture of the die are simplified, the die is convenient to mount and adjust, the service life of the die is prolonged, and the stability of the product quality is ensured.
Preferably, a positioning slide rod is arranged on the lower end face of the top plate, a positioning slide hole is formed in the upper surface of the upper die, and the positioning slide rod is connected in the positioning slide hole in a vertical sliding mode. The advantages are that: the location slide bar with sliding fit between the location slide opening can avoid because of installation error appears in first elastic component or first elastic component takes place horizontal hunting and reduces the precision and the stability that the roof removed, thereby improve the roof with go up the precision and the stability that take place relative movement between the mould.
Preferably, the top plate is provided with a positioning rod, the upper die and the lower die are provided with positioning holes, and the positioning rod is vertically connected with the positioning holes in a sliding manner. The positioning device has the advantages that the precision of relative movement among the top plate, the upper die and the lower die is improved through the sliding limit fit between the positioning rod and the positioning hole.
Preferably, the top plate is provided with a hanging part, and the outer wall of the upper die is provided with a fixing part; when the top plate moves upwards to force the side pulling block to slide out of the forming cavity, the hanging part is contacted with the fixed part and drives the upper die to move upwards. The advantages are that: when the top plate moves upwards and forces the side pulling block to slide out of the forming cavity, the hanging part starts to contact with the fixed part, so that the upper die can be driven to move upwards, and the die opening is completed. Its simple structure, and whole in-process, only need set up the drive the cylinder that the roof reciprocated need not to set up the drive the side is taken out the piece and is realized loosing core the operation and go up the cylinder that the mould sinking operation was accomplished to the mould to greatly reduced is to the needs of cylinder, and then has reduced the input cost in earlier stage and the maintenance cost in later stage.
Preferably, the mold opening safety device comprises a locking rod and a locking block, an accommodating hole is formed in the outer side wall of the upper mold, the locking rod is arranged on the lower mold, and a locking groove is formed in the surface, close to the accommodating hole, of the locking rod; the locking block is arranged in the accommodating hole in a sliding mode, and when the outer end of the locking block slides into the locking groove, the upper die is limited to be separated from the lower die. The advantages are that: before the mold is opened, core-pulling operation is required to be carried out firstly, so that damage to a product and a mold due to direct opening of the upper mold is avoided, and therefore, through the mold opening safety, mold opening operation of the upper mold before the core-pulling operation of the side pulling block is completed can be avoided (namely, before the core-pulling operation of the side pulling block is completed, the locking block is slid outwards, the outer end of the locking block is always kept to slide into the locking groove, the locking rod can limit separation of the upper mold and the lower mold, after the core-pulling operation of the side pulling block is completed, the locking block is slid inwards, the outer end of the locking block is separated from the locking groove, the locking rod can lose locking of the upper mold, and therefore the mold opening operation of the upper mold can be completed by opening the upper mold).
Preferably, the outer side wall of the upper die is provided with a limiting block, and the limiting block is used for limiting the locking block to be separated from the accommodating hole. The advantages are that: under the limiting of the limiting block, the locking block is prevented from sliding and is separated from the accommodating hole in the process, and therefore the stability of sliding connection between the locking block and the accommodating hole is ensured.
Preferably, the inner bottom of the accommodating hole is provided with a second elastic member for forcing the locking block to slide outwards. The advantages are that: under the action of the second elastic piece, after the locking block slides inwards each time, the locking block can automatically slide outwards under the action of the elastic restoring force of the second elastic piece, so that the locking block can automatically slide into the locking groove to realize locking, and the difficulty in operating the locking block is greatly reduced; and, the outer end of latch segment slides in under the circumstances of the locking inslot, the second elastic component is right all the time the latch segment has the elastic support effect, can avoid the latch segment spontaneous to slide in the accommodation hole, thereby improve the locking lever is right go up the locking effect of mould.
Preferably, the second elastic member is a spring. The advantages are that: the elastic rubber belt has the advantages of simple structure, easy deformation, high elasticity and good stability, and the service life of the elastic rubber belt is prolonged.
Preferably, a pull rod is arranged on the top plate, a first inclined plane is arranged at the lower end of the pull rod, and a second inclined plane is arranged on the locking block; when the top plate moves upwards to force the side pulling block to slide out of the forming cavity, the first inclined surface starts to act on the second inclined surface to force the locking block to slide towards the accommodating hole until the locking block is separated from the locking groove. The advantages are that: when the top plate moves upwards, the side pulling block is firstly forced to slide out of the forming cavity, so that after core pulling operation is completed, the locking is forced to automatically slide into the accommodating hole by acting on the second inclined surface through the first inclined surface, and the top plate drives the upper die to integrally move upwards until the locking block is separated from the locking groove, so that die opening operation is automatically completed.
Preferably, the lower edge of the first inclined surface extends downwards to form a limiting surface, and when the first inclined surface slides to the upper side of the locking block, the limiting surface can limit the locking block to slide outwards. The advantages are that: through first inclined plane is used in on the second inclined plane, force locking automatic to the in-process that the accommodation hole slided, if once first inclined plane slided to behind the top of latch segment, under the effect of the elasticity restoring force of second elastic component, the latch segment is automatic outwards slided, and the restriction first inclined plane again with the latch segment contact, then when the compound die, the latch segment can restrict the pull rod moves down to can't accomplish the compound die operation. Under the effect of the limiting surface, when the first inclined surface slides to the upper part of the locking block, the limiting surface can limit the locking block to slide outwards.
Preferably, the outer side wall of the upper die is provided with a limiting frame, and the pull rod is connected to the limiting frame in a vertically sliding manner. The advantages are that: the limiting frame can improve the precision and the stability of the vertical movement of the pull rod, so that the precision and the stability of the interaction between the first inclined plane and the second inclined plane are ensured.
Preferably, the upper end of the locking rod is provided with a chamfer, and the chamfer faces the second inclined plane. The advantages are that: during die assembly, the chamfer can interact with the second inclined surface, so that the locking block is forced to slide towards the accommodating hole, and the phenomenon that the die assembly operation cannot be completed because the locking block clamps the locking rod is avoided.
Preferably, the mold closing fuse comprises a slide block, and the upper end of the slide block is arranged on the lower surface of the top plate in a sliding manner; when the sliding block slides towards the upper die direction until the lower end of the sliding block is contacted with the upper end of the upper die, the top plate is limited to move downwards relative to the upper die; when the sliding block slides towards the direction far away from the upper die until the lower end of the sliding block is separated from the upper end of the upper die, the top plate can move downwards relative to the upper die. The advantages are that: the side-pulling block is simple in structure and convenient to install, and only needs to control sliding of the sliding block during operation, so that the lower end of the sliding block is in contact with or separated from the upper end of the upper die, namely the sliding block is controlled to slide to the lower end of the sliding block to be in contact with the upper end of the upper die before die assembly is completed, locking between the top plate and the upper die is achieved, and the side-pulling block slides into the forming cavity before die assembly is completed. Since the side draw block slides into the molding cavity before the mold closing operation is completed, the side draw block and the lower mold are likely to collide with each other at the mold closing moment, and the mold is damaged.
Preferably, a third elastic piece is arranged on the top plate and used for forcing the sliding block to slide towards the upper die. The advantages are that: after the top plate is moved upwards and core pulling operation is completed, and when the hanging part is in contact with the fixed part, namely the distance between the top plate and the upper die is the largest, the sliding block automatically slides towards the upper die under the action of the third elastic piece, so that relative displacement between the upper die and the top plate is limited.
Preferably, the third elastic member is a spring. The advantages are that: the elastic rubber belt has the advantages of simple structure, easy deformation, high elasticity and good stability, and the service life of the elastic rubber belt is prolonged.
Preferably, a limiting part is arranged on the top plate and used for limiting the whole sliding block to slide between the upper die and the top plate. The advantages are that: can be through spacing portion is right the slip range of slider carries on spacingly, ensures the lower extreme of slider slide to with go up the die head back, can stop sliding, can avoid because of the whole part of slider all slides go up the die with between the roof to increase the degree of difficulty of outside slip the slider.
Preferably, the lower die is provided with an insert rod, and the upper end of the insert rod is provided with a third inclined plane; the sliding block is provided with a jack in a vertically penetrating manner, the jack is positioned on the outer side of the upper die, and a fourth inclined plane is arranged on the inner side wall of the jack; when the top plate is moved downwards to enable the upper die and the lower die to be assembled, the inserted rod is inserted into the inserted hole, the third inclined surface acts on the fourth inclined surface to force the sliding block to slide towards the direction far away from the upper die, the lower end of the sliding block is separated from the upper end of the upper die, and the top plate can move downwards relative to the upper die and force the side pulling block to automatically slide into the forming cavity. The advantages are that: when the top plate is moved downwards, the upper die and the lower die are closed, the top plate acts on the fourth inclined surface through the third inclined surface, so that the sliding block is forced to automatically slide in the direction away from the upper die, the top plate is continuously moved downwards after the lower end of the sliding block is separated from the upper end of the upper die, and the side pulling block is further forced to automatically slide into the forming cavity.
Preferably, an oil storage groove is formed in the third inclined surface. The advantages are that: the oil sump may be used to store a solid or semi-solid lubricant, thereby increasing the sensitivity of the interaction between the third and fourth ramps.
Compared with the prior art, the beneficial effect of this application lies in:
(1) the upper end of the drawing rod is arranged on the top plate, and the lower end of the drawing rod is provided with a limiting slide rail which is obliquely arranged; the side pulling block is arranged in the upper die in a sliding mode, and one end, far away from the forming cavity, of the side pulling block is arranged in the limiting sliding rail in a sliding mode; when the top plate is moved in the up-and-down direction, the side pulling block is forced to slide only in the upper die under the action of the inclination angle of the limit slide rail and the sliding limit of the upper die on the side pulling core, so that the side pulling block can slidably enter and exit the forming cavity, the core pulling operation can be realized, and the core pulling operation is simple and convenient;
(2) the core pulling operation can be carried out along different directions when the top plate moves up and down by arranging the limiting slide rails in different directions and/or different inclination angles;
(3) the plurality of the drawing rods are respectively provided with the limiting slide rails with different directions and/or different inclination angles, so that a plurality of core drawing operations can be simultaneously carried out along different directions when the top plate moves up and down, the operation is simple, the control is easy, and cylinders for driving the side drawing blocks to slide do not need to be respectively arranged, so that the early investment cost and the later maintenance cost are reduced;
(4) the die opening safety is arranged between the upper die and the lower die, so that the upper die and the lower die are limited from being separated before the side pulling block slides out of the forming cavity, the die opening operation can be performed after the side pulling block finishes the core pulling operation, and the phenomenon that a formed product is scrapped because the die opening is performed before the side pulling block is pulled out is avoided;
(5) because the die assembly safety is arranged between the top plate and the upper die, before the upper die and the lower die are assembled, the side pumping block is limited from sliding into the forming cavity, so that the core feeding operation can be ensured after the upper die and the lower die are assembled, otherwise, once the side pumping block slides into the forming cavity before the die assembly, the side pumping block is easy to jack the lower die at the moment of assembling the upper die and the lower die.
Drawings
FIG. 1 is a perspective view of a prior art yacht engine oil cover;
FIG. 2 is a perspective view of a dual safety mold;
FIG. 3 is an enlarged view of a portion of FIG. 2 at I;
FIG. 4 is a view showing the top plate separated from the upper mold;
FIG. 5 is a top plate perspective view;
FIGS. 6 to 7 are schematic diagrams of the operation of the side pulling block;
FIG. 8 is a front view of the dual safety mold;
FIGS. 9 to 10 are schematic diagrams of the operation of the mold opening fuse;
FIGS. 11 to 13 are schematic diagrams of the operation of the mold clamping fuse;
fig. 14 is a schematic view of the structure of the oil sump.
In the figure: 1. an upper die; 10. positioning holes; 11. positioning a slide hole; 12. a fixed part; 13. an accommodation hole; 14. a limiting block; 15. a limiting frame; 16. a limiting part; 17. a limiting chute; 18. a vertical chute; 19. mounting grooves; 2. a lower die; 3. a side drawing block; 4. a top plate; 41. positioning the slide bar; 42. a hanging part; 43. positioning a rod; 5. drawing a rod; 51. a limiting slide rail; 6. a molding cavity; 7. a first elastic member; 8. opening the mould for insurance; 81. a locking lever; 811. a locking groove; 812. chamfering; 813. accommodating grooves; 82. a locking block; 821. a second inclined plane; 83. a second elastic member; 84. a pull rod; 841. a first inclined plane; 842. a limiting surface; 9. the safety of mold closing; 91. a slider; 911. a jack; 912. a fourth slope; 92. a third elastic member; 93. inserting a rod; 931. a third inclined plane; 932. an oil storage tank; 100. an oil cover cap; 101. a hole of abdication; 102. and (4) mounting a screw.
Detailed Description
The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.
In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.
It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1-14, a double-safety mold comprises an upper mold 1, a lower mold 2, a side pulling block 3, a top plate 4, a pulling rod 5, a molding cavity 6, a first elastic piece 7, a mold opening safety 8 and a mold closing safety 9; the top plate 4 is movably arranged above the upper die 1 along the up-down direction, the upper end of the drawing rod 5 is arranged on the top plate 4 through a screw, and the lower end of the drawing rod 5 is provided with a limiting slide rail 51 which is obliquely arranged. The side pumping block 3 is arranged in the upper die 1 in a sliding manner, a limiting sliding groove 17 is formed in the side wall of the upper die 1, the side pumping block 3 is arranged in the limiting sliding groove 17 in a sliding manner, and a forming cavity 6 is defined among the side pumping block 3, the upper die 1 and the lower die 2; after the upper die 1 and the lower die 2 are closed, the side pumping block 3 is controlled to slide into the molding cavity 6, so that molten raw materials can be injected through a pouring channel on the lower die 2, and the oil cover cap 100 is formed after cooling. One end of the side pulling block 3, which is far away from the molding cavity 6, is slidably arranged in a limiting slide rail 51, and under the limiting action of the limiting slide groove 17 on the side pulling block 3 and the oblique pulling action of the limiting slide rail 51 on the side pulling block 3, when the top plate 4 is moved upwards, the side pulling block 3 can be forced to slide out of the molding cavity 6, so that the core pulling operation is realized (as shown in fig. 7); when the top plate 4 is moved downwards, the side draw block 3 can be forced to slide into the forming cavity 6, so that the core entering operation is realized (as shown in fig. 6). Under the action of the top plate 4, the pulling rod 5 and the limiting slide rail 51, the side pulling block 3 can slide along the side direction of the upper die 1 by moving the top plate 4 up and down, so that the core pulling operation is greatly simplified. In addition, the core pulling operation can be performed along different directions when the top plate 4 moves up and down due to the fact that the limiting slide rails 51 with different directions and/or different inclination angles are arranged; in addition, the angle of the limiting slide rail 51 is different, and the distance between the displacement of the up-down moving top plate 4 and the sliding of the side pulling block 3 is also different (for example, in the embodiment, since the thickness of the oil cover cap 100 is about 4mm and a safety distance of about 6mm is reserved, the top plate 4 can be displaced upwards by 30mm, and the side pulling block 3 can be forced to slide outwards by 10 mm). Therefore, can be through setting up not equidirectional and/or different inclination's spacing slide rail 51 on a plurality of pole 5 of taking out respectively, thereby when reciprocating roof 4, can carry out a plurality of operations of loosing core along the direction of difference simultaneously, thereby simplify operation and control process, and only need set up the cylinder that the drive roof 4 removed, and need not to set up respectively and drive the gliding cylinder of each side extraction piece 3, thereby reduce the needs to the cylinder, the input cost of greatly reduced early stage and the maintenance cost in later stage. In this embodiment, the number of the side pulling blocks 3 is four, one of the side pulling blocks is used for forming the abdicating hole 101, and the other three side pulling blocks are respectively used for forming the three screw mounting holes 102; the four side pulling blocks 3 are respectively connected with the four limiting sliding grooves 17 arranged on the four pulling rods 5 in a sliding manner, so that when the top plate 4 moves up and down, the four side pulling blocks 3 can be simultaneously forced to respectively slide in the four limiting sliding grooves 17 in the upper die 1. In order to reduce the whole volume of the die, a vertical sliding groove 18 is arranged on the upper end face of the upper die 1, the lower end of the vertical sliding groove 18 is communicated with a limiting sliding groove 17, so that the drawing rod 5 can be vertically and slidably mounted in the vertical sliding groove 18, the whole volume of the die can be greatly reduced, and the vertical movement precision of the drawing rod 5 can be improved. In addition, can set up oil storage groove 932 on the spacing slide rail 51, can store solid-state or half solid-state lubricating oil in the oil storage groove 932, can improve the smooth and easy degree of sliding match between piece 3 and the spacing slide rail 51 is taken out to the side, avoids the side to take out piece 3 and appears the card phenomenon of dying on spacing slide rail 51. A wear-resistant sleeve (an oil storage groove 932 for storing solid or semi-solid lubricating oil is arranged on the outer wall of the wear-resistant sleeve) or a wear-resistant piece (the surface of the wear-resistant piece is provided with the oil storage groove 932 for storing solid or semi-solid lubricating oil) can be sleeved on a sliding contact surface between the side pumping block 3 and the limiting sliding groove 17, so that the sliding smoothness of the side pumping block 3 in the limiting sliding groove 17 is improved, and the phenomenon that the side pumping block 3 is blocked in the limiting sliding groove 17 is avoided; and wear-resisting piece or wear-resisting cover can avoid the side to take out piece 3 and limit sliding groove 17 direct contact, can improve the life of side piece 3 and limit sliding groove 17 of taking out.
In order to reduce the difficulty of separating the top plate 4 from the upper die 1 and prevent the upper die 1 from moving upwards along with the top plate 4, the first elastic piece 7 is arranged between the top plate 4 and the upper die 1; after the die is closed, the top plate 4 is moved downwards and the first elastic piece 7 is compressed, so that after the core feeding operation of the side drawing block 3 is completed, downward pressure needs to be applied to the top plate 4 to balance the elastic force of the first elastic piece 7, and the top plate 4 is ensured to be in a static state; before the mold opening, when the pressure applied to the top plate 4 is removed or the top plate 4 moves upwards, the first elastic piece 7 can generate downward pressure on the upper mold 1, so that the upper mold 1 is limited to move upwards along with the top plate 4, and the mold opening operation is performed after the core pulling operation is finished; moreover, the elastic force of the first elastic element 7 can force the top plate 4 to separate from the upper die 1, so that the top plate 4 is prevented from being difficult to move upwards due to negative pressure generated between the top plate 4 and the upper die 1 or large adhesive force generated between the side pumping block 3 and a product in the forming cavity 6 in the injection molding process. As shown in fig. 5, the first elastic member 7 is preferably four nitrogen springs, and is mounted and fixed on the top plate 4 at equal intervals by screws, respectively, and has the advantages of small volume, large elastic force, long stroke, smooth operation, long service life, gentle elastic curve, no need of pre-tightening, and the like.
As shown in fig. 4 and 5, in order to improve the stability of the top plate 4 in the up-and-down movement process and the positioning accuracy between the top plate and the upper die 1, a positioning slide rod 41 is arranged on the lower end surface of the top plate 4, a positioning slide hole 11 is arranged on the upper surface of the upper die 1, and the positioning slide rod 41 is connected into the positioning slide hole 11 in a vertical sliding manner. Through the sliding limit fit between the positioning slide rod 41 and the positioning slide hole 11, the reduction of the moving precision and stability of the top plate 4 due to the installation error of the first elastic piece 7 or the horizontal swing of the first elastic piece 7 can be avoided, so that the precision and stability of the relative movement between the top plate 4 and the upper die 1 are improved. In order to improve the positioning accuracy and the stability in the moving process between the top plate 4 and the upper and lower dies 1 and 2, four positioning rods 43 are arranged on the top plate 4, four positioning holes 10 are arranged on the upper and lower dies 1 and 2, and the positioning rods 43 are arranged in the positioning holes 10 in a sliding manner, so that the positioning accuracy and the stability in the moving process between the top plate 4 and the upper and lower dies 1 and 2 are improved in the process of moving the top plate 4 up and down and opening the upper die 1. It should be noted that, if the positioning slide rod 41 or the positioning rod 43 is cylindrical, the number of the positioning slide rod 41 or the positioning rod 43 should be at least two, so as to avoid the relative rotation between the positioning slide rod 41 and the positioning slide hole 11 or between the positioning rod 43 and the positioning hole 10 in the process of limiting sliding fit; if the positioning slide rod 41 or the positioning rod 43 is of a polygon prism structure, the number of the positioning slide rod or the positioning rod is not limited, and relative rotation can be avoided in the process of limiting by sliding up and down. However, in order to improve the stability of the sliding matching between the top plate and the upper die 1 and avoid the sliding locking phenomenon caused by uneven stress, the number of the positioning slide rods 41 and the positioning rods 43 is preferably four, and the positioning slide rods and the positioning rods are symmetrically arranged, so that the stability of the top plate 4 and the upper die 1 in the up-and-down moving process is improved.
As shown in fig. 3, in order to avoid the need to separately provide a cylinder for driving the upper mold 1, a hanging part 42 is provided on the top plate 4, the hanging part 42 is preferably of an L-shaped structure (or J-shaped structure), and the fixing part 12 is mounted on the outer wall of the upper mold 1 by a screw; before the core pulling operation is performed, the lower end of the hanging part 42 is positioned below the fixing part 12; along with the upward movement of the top plate 4, the side pulling block 3 is forced to slide out of the forming cavity 6 (namely after the core pulling operation is finished), the lower end of the hanging part 42 is in contact with the fixed part 12, and when the top plate 4 is moved upward again, the hanging part 42 can hang the fixed part 12 so as to drive the upper die 1 to move upward along with the top plate 4, so that the die opening operation can be completed. Through the hanging part 42 and the fixing part 12 which are simple in structure, the air cylinder which drives the top plate 4 to move up and down can be arranged without arranging the air cylinder which drives the upper die 1, so that the requirement of the air cylinder on the air cylinder is greatly reduced, and the investment cost in the early stage and the maintenance cost in the later stage are reduced. In order to enhance the installation strength of the fixing portion 12, as shown in fig. 9 or 10, an installation groove 19 for accommodating one end of the fixing portion 12 may be disposed on an outer wall of the upper die 1, one end of the fixing portion 12 is slidably matched in the installation groove 19, and the fixing portion 12 is installed and fixed inside the installation groove 19 by a screw, so that the installation strength between the fixing portion 12 and the upper die 1 is greatly improved, and the fixing portion 12 is prevented from falling off from the upper die 1. It should be noted that the number of the hanging parts 42 and the fixing parts 12 is not limited, but in order to improve the stability of the hanging parts 42 moving the upper die 1 by hanging the fixing parts 12, a plurality of fixing parts 12 may be symmetrically disposed on the upper die 1, and the same number of hanging parts 42 may be mounted at corresponding positions on the top plate 4, so as to greatly improve the stability of the movement of the upper die 1.
As shown in fig. 3 and fig. 9-10, the mold opening fuse 8 includes a locking rod 81, a locking block 82, a second elastic member 83 and a pull rod 84, the outer sidewall of the upper mold 1 is provided with a receiving hole 13, and the locking block 82 is slidably disposed in the receiving hole 13; the locking rod 81 is arranged on the lower die 2, and a locking groove 811 is arranged on the surface of the locking rod 81 close to the accommodating hole 13; when the outer end of the locking block 82 slides into the locking groove 811, the separation of the upper die 1 and the lower die 2 is limited, so that the locking between the upper die 1 and the lower die 2 is realized, and the upper die 1 is prevented from moving upwards along with the top plate 4 during core pulling operation. If the first elastic member 7 is not arranged between the top plate 4 and the upper die 1, or the elastic force of the arranged first elastic member 7 is insufficient, or the maximum deformation amount of the arranged first elastic member 7 is short, or the arranged first elastic member 7 fails, when the top plate 4 is moved upwards, the upper die 1 may be driven to move upwards along with the top plate 4 before the core pulling operation is not completed, at this time, because the side pulling block 3 is not completely separated from the forming cavity 6, the formed oil cover cap 100 cannot be completely taken out of the forming cavity 6, and the die is extremely easily damaged, or the oil cover cap 100 is easily torn/torn. Therefore, before the core pulling operation is completed, the locking rod 81 can limit the separation of the upper die 1 and the lower die 2 by sliding the locking block 82 outwards and always keeping the outer end of the locking block 82 to slide into the locking groove 811, so that the locking between the upper die 1 and the lower die 2 is realized; after the core pulling operation is completed, the locking block 82 slides inwards to separate the outer end of the locking block 82 from the locking groove 811, and the locking rod 81 loses the locking of the upper die 1, so that the upper die 1 and the lower die 2 can be separated from each other, and the upper die 1 is opened to complete the die opening operation. A limiting block 14 is arranged on the outer side wall of the upper die 1 through a screw, and the limiting block 14 is used for limiting the locking block 82 to be separated from the accommodating hole 13; the stopper 14 may be installed in an embedded manner, so as to avoid interference with the locking rod 81 or the locking groove 811; under the limit of the limit block 14, the locking block 82 is prevented from being separated from the accommodating hole 13 in the process of sliding the locking block 82, so that the stability of the sliding connection between the locking block 82 and the accommodating hole 13 is ensured. The second elastic member 83 is fitted to the inner bottom of the receiving hole 13 to force the locking piece 82 to slide outward. Under the action of the second elastic member 83, after the locking block 82 slides inwards each time, the locking block 82 can automatically slide outwards under the action of the elastic restoring force of the second elastic member 83, so that the locking block can automatically slide into the locking groove 811 to realize locking, and the difficulty in operating the locking block 82 is greatly reduced; moreover, under the condition that the outer end of the locking block 82 slides into the locking groove 811, the second elastic member 83 always has an elastic supporting function on the locking block 82, so that the locking block 82 is prevented from spontaneously sliding into the accommodating hole 13, and the locking effect of the locking rod 81 on the upper die 1 is improved. The upper end of the pull rod 84 is fixed on the top plate 4 by a screw, the lower end of the pull rod 84 is provided with a first inclined surface 841, the lower side of the first inclined surface 841 extends downwards to form a limiting surface 842, and the locking block 82 is provided with a second inclined surface 821. When the top plate 4 is moved upwards, the side pulling block 3 is forced to slide outwards and simultaneously the pull rod 84 is driven to move upwards, after the core pulling operation of the side pulling block 3 is completed, the first inclined surface 841 starts to act on the second inclined surface 821 to automatically force the locking block 82 to slide towards the accommodating hole 13 until the locking block 82 is separated from the locking groove 811, at this time, the locking rod 81 can lose the locking of the upper die 1, and then the hanging part 42 is contacted with the fixing part 12, so that the top plate 4 can drive the upper die 1 to move upwards together, and the die opening operation is completed. When the first inclined surface 841 slides over the locking block 82, the limiting surface 842 limits the locking block 82 to slide out. If the limiting surface 842 is not used, once the first inclined surface 841 slides to the upper side of the locking block 82, the locking block 82 automatically slides outwards under the elastic restoring force of the second elastic member 83, and the first inclined surface 841 is limited to be contacted with the locking block 82 again, when the mold is closed, the locking block 82 limits the pull rod 84 to move downwards, so that the mold closing operation cannot be completed. The upper end of the locking lever 81 is provided with a chamfer 812, and the chamfer 812 is arranged facing the second inclined surface 821; during mold closing, the chamfer 812 may interact with the second inclined surface 821 to force the locking block 82 to slide into the receiving hole 13, thereby preventing the locking block 82 from seizing the locking bar 81 and preventing the mold closing operation from being completed. In addition, in order to improve the accuracy and stability of the vertical movement of the pull rod 84, a limit frame 15 is provided on the outer side wall of the upper die 1, the pull rod 84 is connected to the limit frame 15 in a vertically sliding manner, and the accuracy and stability of the vertical movement of the pull rod 84 can be improved by the limit frame 15, thereby ensuring the accuracy and stability of the interaction between the first inclined surface 841 and the second inclined surface 821. It should be noted that, in order to reduce the overall volume of the mold opening fuse 8, the upper end of the locking rod 81 is provided with a receiving groove 813 downward, and the receiving groove 813 can be used for receiving the pull rod 84 (as shown in fig. 3, 9, or 10), so as to greatly reduce the overall volume of the mold opening fuse 8. In addition, a plurality of die sinking fuses 8 can be symmetrically arranged, so that the locking stability of the die sinking fuses 8 can be improved, and the locking effect on the upper die 1 is improved.
As shown in fig. 11 to 14, the mold clamping fuse 9 includes a slider 91, a third elastic member 92, and an insert pin 93; the upper end of the slide block 91 is slidably disposed on the lower surface of the top plate 4, and when the slide block 91 slides towards the upper die 1 until the lower end of the slide block 91 contacts the upper end of the upper die 1, the relative displacement between the top plate 4 and the upper die 1 is limited, so as to avoid that the top plate 4 moves downward relative to the upper die 1 to force the side draw block 3 to complete the core feeding operation before the die closing operation between the upper die 1 and the lower die 2 is completed. Otherwise, if the side block 3 slides into the molding cavity 6 before the mold closing operation is completed, the side block 3 and the lower mold 2 are likely to collide with each other at the mold closing moment, thereby damaging the mold. After the upper die 1 and the lower die 2 complete the die closing operation, when the slide block 91 slides away from the upper die 1 until the lower end of the slide block 91 is separated from the upper end of the upper die 1, the top plate 4 moves downward relative to the upper die 1, thereby realizing the core feeding operation of the side pulling block 3. The third elastic element 92 is arranged on the top plate 4 and used for forcing the sliding block 91 to slide towards the upper die 1; after the top plate 4 is moved upward and the core pulling operation is completed, and when the hanging part 42 contacts the fixed part 12, the distance between the top plate 4 and the upper die 1 is the largest, and the slider 91 automatically slides toward the upper die 1 by the third elastic member 92, so that the relative displacement between the upper die 1 and the top plate 4 is restricted. Be equipped with spacing portion 16 on roof 4, spacing 16 position slot structures carry on spacingly through spacing portion 16 to the slip range of slider 91, ensure that the lower extreme of slider 91 slides to the back of last mould 1's upper end, can stop sliding, can avoid because of the whole partial whole of slider 91 slides between last mould 1 and roof 4 to increase the degree of difficulty of outside slip slider 91. The lower end of the insert rod 93 is fixed on the lower die 2 through a screw, and the upper end of the insert rod 93 is provided with a third inclined surface 931; the slider 91 is provided with a jack 911 extending through the upper and lower portions, the jack is located on the outer side of the upper die 1, and a fourth inclined plane 912 is arranged on the inner side wall of the jack 911. When the top plate 4 is moved downwards to match the upper die 1 and the lower die 2, the insert rod 93 is inserted into the insert hole 911, and the third inclined surface 931 acts on the fourth inclined surface 912 to force the slider 91 to slide in a direction away from the upper die 1, so that the lower end of the slider 91 is separated from the upper end of the upper die 1, the top plate 4 is continuously moved downwards relative to the upper die 1, and the side draw block 3 is forced to automatically slide into the molding cavity 6. In order to improve the smoothness and sensitivity of the interaction between the third inclined surface 931 and the fourth inclined surface 912, the oil storage groove 932 is disposed on the third inclined surface 931, and the solid or semi-solid lubricating oil can be stored in the oil storage groove 932, so that the smoothness and sensitivity of the interaction between the third inclined surface 931 and the fourth inclined surface 912 can be greatly improved. It should be noted that, by symmetrically arranging a plurality of mold clamping fuses 9, the locking effect between the top plate 4 and the upper mold 1 can be enhanced before the mold clamping operation is completed, and the core feeding operation can be performed after the mold clamping operation is completed.
The second elastic element 83 and the third elastic element 92 are preferably springs, which are easily deformed, have high elasticity and good stability, and thus the service life of the first elastic element 7 and the second elastic element 83 can be prolonged.
The working principle is as follows: after the molten raw material in the molding cavity 6 is cooled to form the oil cover cap 100, the top plate 4 is driven to move upwards through the air cylinder, and the first elastic piece 7 arranged between the top plate 4 and the upper die 1 can promote the separation of the top plate 4 and the upper die 1, so that the upper die 1 is prevented from moving upwards along with the top plate 4; in addition to the locking of the locking mechanism 9 (i.e., the locking action between the locking groove 811 and the locking block 82, as shown in fig. 9), the separation of the upper mold 1 and the lower mold 2 is prevented. During the upward movement of the top plate 4, the side pulling block 3 can be forced to slide outwards by the inclined limiting slide rail 51, so that the core pulling operation is completed (as shown in fig. 6-7). Since the top plate 4 slides upwards and simultaneously drives the pull rod 84 to move upwards, after the side pulling block 3 completes the core pulling operation, the first inclined surface 841 at the lower end of the pull rod 84 starts to act on the second inclined surface 821, so that the locking block 82 is forced to slide towards the accommodating hole 13, and is separated from the locking groove 811; at this time, the lower end of the hanging portion 42 contacts the fixing portion 12, and the top plate 4 continues to move upward, so that the upper die 1 is driven to move upward along with the top plate 4, thereby completing the die opening operation (as shown in fig. 10), and after the die opening operation is completed, the limiting surface 842 can limit the locking block 82 to pop out, thereby avoiding the influence on the die closing operation caused by the locking block 82 limiting the pull rod 84 to move downward. During the mold opening operation, the upper end of the insertion rod 93 is disengaged from the insertion hole 911, and the slider 91 automatically slides toward the upper mold 1 by the elastic force of the third elastic member 92 until the stopper portion 16 stops the slider 91, and at this time, one end of the slider 91 just slides between the upper mold 1 and the top plate 4, so that the slider 91 can restrict the downward displacement of the top plate 4 relative to the upper mold 1 (as shown in fig. 11). When the top plate 4 is driven to move downwards during mold closing, the top plate 4 drives the upper mold 1 to move downwards, and no relative displacement occurs between the top plate 4 and the upper mold 1 (i.e. the side pulling block 3 does not move in the limiting sliding groove 17), until the upper mold 1 and the lower mold 2 complete mold closing, the upper end of the insertion rod 93 is inserted into the insertion hole 911 and acts on the fourth inclined surface 912 through the third inclined surface 931, so that the sliding block 91 is forced to automatically slide towards the outer side direction of the upper mold 1, thereby losing locking between the top plate 4 and the upper mold 1 (as shown in fig. 12), so that the top plate 4 continues to move downwards relative to the upper mold 1, until the top plate 4 and the lower mold 2 contact, the side pulling block 3 just completes core entering operation, and the first inclined surface 841 moves downwards along with the top plate 4 to below the locking block 82, the locking block 82 automatically slides outwards into the locking groove 811 under the elastic action of the second elastic element 83, the upper die 1 is re-locked. In the whole process, core pulling operation, core feeding operation, mold opening operation and mold closing operation can be realized only by controlling the up-and-down movement of the top plate 4, and the control of the mold opening fuse 8 and the control of the mold closing fuse 9 can be realized, so that the core pulling operation is completed between the mold opening operation, and the core feeding operation is completed after the mold closing operation.
The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims (10)

1. The die opening safety device comprises an upper die, a lower die, a locking rod and a locking block, wherein the outer side wall of the upper die is provided with a containing hole, and the locking block is arranged in the containing hole in a sliding manner; the locking rod is arranged on the lower die, and a locking groove is formed in the surface, close to the accommodating hole, of the locking rod; and when the outer end of the locking block slides into the locking groove, the upper die and the lower die are limited to be separated.
2. A mold opening safety as claimed in claim 1, wherein the outer sidewall of the upper mold is provided with a stopper for limiting the locking piece from being disengaged from the receiving hole.
3. The mold break fuse as claimed in claim 2, wherein the receiving hole is provided at an inner bottom thereof with a second resilient member for urging the locking block to slide outwardly.
4. The mold break fuse as recited in claim 3 wherein said second resilient member is a spring.
5. A die sinking safety as claimed in claim 3, further comprising a pull rod, wherein a first inclined surface is provided at a lower end of the pull rod, and a second inclined surface is provided on the locking block; when the pull rod moves upwards, the first inclined surface acts on the second inclined surface to force the locking block to slide towards the accommodating hole until the locking block is separated from the locking groove.
6. An open die safety as claimed in claim 5, wherein the lower edge of said first ramp extends downwardly to define a stop surface for limiting outward sliding of said lock block when said first ramp slides over said lock block.
7. A die sinking safety as claimed in claim 5, wherein the outer side wall of the upper die is provided with a limiting frame, and the pull rod is connected to the limiting frame in a vertically sliding manner.
8. An open die safety according to claim 5, wherein the upper end of the locking lever is provided with a chamfer disposed facing the second ramp.
9. A mold open fuse as claimed in claim 5, further comprising a top plate movably disposed above said upper mold in an up-down direction, said upper end of said pull rod being disposed on a lower surface of said top plate.
10. A die sinking safety as claimed in claim 9, wherein the top plate is provided with a hanging part, and the outer wall of the upper die is provided with a fixing part; when the top plate is moved upwards and the locking block is forced to be separated from the locking groove, the hanging part is contacted with the fixing part and drives the upper die to move upwards.
CN202022197525.2U 2020-09-29 2020-09-29 Die sinking insurance Active CN214000414U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022197525.2U CN214000414U (en) 2020-09-29 2020-09-29 Die sinking insurance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022197525.2U CN214000414U (en) 2020-09-29 2020-09-29 Die sinking insurance

Publications (1)

Publication Number Publication Date
CN214000414U true CN214000414U (en) 2021-08-20

Family

ID=77298511

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022197525.2U Active CN214000414U (en) 2020-09-29 2020-09-29 Die sinking insurance

Country Status (1)

Country Link
CN (1) CN214000414U (en)

Similar Documents

Publication Publication Date Title
CN1972793B (en) Device for the production of molded parts and structural unit for use in such a device
US8926316B2 (en) Undercut processing mechanism
US11273586B2 (en) Undercut processing mechanism, mold for molding, and molded article
CN214000414U (en) Die sinking insurance
CN212979113U (en) Double-safety die
CN214056282U (en) Die assembly safety
CN112060499A (en) Double-safety die
CN112440448B (en) Three-plate die drawing mechanism
US2850766A (en) Injection mold assembly
CN111070594B (en) Injection mold
CN214056281U (en) Side core-pulling mechanism
JP7128558B2 (en) Undercut processing mechanism, mold for molding
CN110281479B (en) Core-pulling mechanism for automobile filter shell
CN209207948U (en) The sliding block T-slot guiding mechanism of injection mold
CN212554859U (en) Injection mold with delay slider
CN210791943U (en) Inclined core-pulling device and slide core-pulling die
CN216400358U (en) Mold equipment with slide block delay structure and slide block of mold equipment
CN213860418U (en) Plastic product injection mold
CN214000188U (en) Fixed die high-thrust reverse ejection die
CN209832486U (en) Front mould core-pulling automatic separation structure
CN217495079U (en) Slide delay mechanism and injection mold with same
CN216683211U (en) Oblique ejection mechanism of injection mold
CN211763110U (en) B plate ejection driving rear mold large tunnel core pulling mechanism
CN213675294U (en) Secondary core-pulling slide structure and die
CN217704544U (en) Ejector mechanism for ejector sleeve of sliding block

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant