CN213563997U - Rubber coating piece forming die - Google Patents

Abstract

The application relates to the field of injection molds, in particular to a rubber coating piece forming mold. The key points of the technical scheme are as follows: comprises a fixed die and a movable die, wherein the fixed die is provided with a concave die, the movable die is provided with a core, the core and the concave die are mutually opened and closed, when core and die compound die, form the shaping chamber that shape and plastic layer are unanimous between core and the die, the die joint of core has first step and second step, the height of second step is higher than first step, be equipped with first location boss and second location boss on the core respectively, be equipped with on the first location boss and be used for supplying projection and strengthening rib to inlay the positioning groove who establishes the location, the outer fringe profile of first location boss and the outer fringe profile looks adaptation of stereoplasm bearing shell, the outer fringe of first location boss is used for the outer fringe of lock stereoplasm bearing shell, first step is used for with first side fender portion looks butt, second location boss is used for with second side fender portion looks butt, this application has the effect of the stability when promoting stereoplasm bearing shell and putting.

Description

Rubber coating piece forming die

Technical Field

The application relates to the field of injection molds, in particular to a rubber coating piece forming mold.

Background

The rubber coating part is a workpiece formed by injection molding of a layer of elastic plastic on the surface of a hard base material, the related process is a secondary injection molding process, the secondary injection molding technology thoroughly changes the aesthetic standard, design thought and functional requirements of consumer goods, and the functions of noise reduction, shock absorption, water resistance, collision prevention and the like of a product can be increased by utilizing the secondary injection molding technology, so that the functionality of the product is improved.

At present, a shell-shaped double-color injection molding rubber-coated workpiece is available, which is used for shells of electric equipment, such as electric wrenches, electric drills and the like, the shell is provided with an inner surface and an outer surface, the rubber-coated piece is divided into a plastic layer close to the outer surface and a hard bearing shell close to the inner surface, the hard bearing shell mainly comprises a body part, a first side blocking part and a second side blocking part, the first side blocking part and the second side blocking part are fixed with the body part, the length directions of the first side blocking part and the second side blocking part are respectively arranged along the peripheral outline of the body part, the two ends of the first side blocking part and the second side blocking part are connected, the first side blocking part and the second side blocking part extend towards the outside of the same side of the body part, the extension length of the first side blocking part is greater than that of the second side blocking part, and at the moment, a plastic layer can be injected on one side surface of the body part and one side surface of the first side blocking part to form the outer surface of the encapsulation workpiece; in addition, the main body part is fixed with the equipment, usually, a convex column is installed on the inner surface of the main body part, a plurality of reinforcing ribs are arranged between the convex column and the main body part, internal threads are arranged on the convex column, the convex column and the equipment can be fixed with each other through screws, and the first side blocking part, the second side blocking part and the main body part of the workpiece respectively protect the front face and the side face of the equipment.

In view of the above-mentioned related art, when the injection layer of the rigid bearing shell is injection molded, the rigid bearing shell needs to be placed in the mold core of the mold, but in the actual use operation, there is a defect that the rigid bearing shell is unstable in placement and positioning.

SUMMERY OF THE UTILITY MODEL

In order to promote the stability of stereoplasm bearing shell when putting, this application provides a rubber coating piece forming die.

The application provides a rubber coating piece forming die adopts following technical scheme:

a rubber coating piece forming die comprises a fixed die and a movable die, wherein a female die is arranged on the fixed die, a core is arranged on the movable die, the core and the female die are mutually opened and closed, when the core and the female die are closed, a forming cavity with the shape consistent with that of a plastic layer is formed between the core and the female die, a first step and a second step are arranged on a parting surface of the core, the height of the second step is higher than that of the first step, a first positioning boss and a second positioning boss are respectively arranged on the core, a positioning groove for embedding and positioning a convex column and a reinforcing rib is arranged on the first positioning boss, the outer edge profile of the first positioning boss is matched with the outer edge profile of a hard bearing shell, the outer edge of the first positioning boss is used for buckling the outer edge of the hard bearing shell, and the first step is used for abutting against a first side blocking part, the second positioning boss is used for abutting against the second side blocking part.

Through adopting above-mentioned technical scheme, first location boss carries out the lock with stereoplasm bearing shell outer fringe, inlay projection and strengthening rib simultaneously and establish to positioning groove in, it is spacing to realize moving the circumference of stereoplasm bearing shell, reduce the stereoplasm bearing shell and produce the possibility towards the skew of circumferential direction, and simultaneously, first step and first side fender portion looks butt, it is spacing to realize moving first side fender portion, second location boss and second side fender portion butt, it is spacing to realize moving second side fender portion, realize carrying out the bearing location to one side of stereoplasm bearing shell, the stereoplasm bearing shell is under the effect that obtains bearing location and skew location, the stability when the stereoplasm bearing shell was put finally obtains promoting.

Preferably, the core comprises an insert, a mounting hole is formed in the core in a penetrating manner, the insert is fixedly embedded in the core through the mounting hole, and the positioning groove is formed in the insert.

Through adopting above-mentioned technical scheme, the structure of projection and strengthening rib is comparatively complicated, and the shape of positioning groove is unanimous with the shape of projection and strengthening rib respectively this moment, consequently causes positioning groove's structure comparatively complicated, sets up positioning groove on inserting, can process alone inserting, reduces the degree of difficulty of core processing, reduces simultaneously and causes the condemned possibility of monoblock core because of positioning groove processing error.

Preferably, a first cooling system is arranged in the female die and comprises a plurality of first runners which are arranged at intervals along the width direction and/or the length direction of the female die, and two ends of each first runner penetrate through the female die respectively.

Through adopting above-mentioned technical scheme, first runner can supply cooling water to flow into to the die in, a plurality of runners that are the interval setting at this moment can cool off the heat dissipation to a plurality of positions of die, and the cooling is even, reduces plastics because of shrink inequality and the perk that the cooling inequality caused, and the finished piece quality obtains promoting.

Preferably, the first runner includes first introduction section, first cooling section, first introduction section and first extension section, first cooling section is along the length and/or the width direction setting of die, the one end of first introduction section is in the die upper shed, the other end of first introduction section with the one end intercommunication of first cooling section, the one end of first introduction section is in the die upper shed, the other end of first introduction section with the other end intercommunication of first cooling section, first extension section is along the thickness direction setting of die, first cooling section with first extension section intercommunication.

Through adopting above-mentioned technical scheme, first introduction section can supply the cooling water to introduce, the cooling water flows immediately to first cooling section in, first cooling section absorbs the heat along the length and/or the width direction of die, the cooling water flows outside the die from first induction section department finally, realizes cooling cycle, in this process, the cooling water flows to first extension section in for the cooling water can flow to a plurality of position points on the die thickness direction and carry out the heat absorption, the cooling effect obtains further promotion.

Preferably, a second cooling system is arranged in the mold core, the second cooling system comprises a plurality of second flow channels which are arranged at intervals along the width direction and/or the length direction of the mold core, and two ends of each second flow channel penetrate through the mold core respectively.

Through adopting above-mentioned technical scheme, the second runner can supply in cooling water flows into the core, and a plurality of second runners that are the interval setting this moment can cool off the heat dissipation to a plurality of positions of core, and the cooling is even, reduces plastics because of shrink inequality and perk that the cooling inequality caused, and the finished piece quality obtains promoting.

Preferably, the second flow channel includes a second introduction section, a second cooling section, a second extraction section and a second extension section, the second cooling section is disposed along the length and/or width direction of the core, one end of the second introduction section is open on the core, the other end of the second introduction section is communicated with one end of the second cooling section, one end of the second extraction section is open on the core, the other end of the second extraction section is communicated with the other end of the second cooling section, the second extension section is disposed along the thickness direction of the core, the second cooling section is communicated with the second extension section, and the second extension section extends into the first positioning boss.

Through adopting above-mentioned technical scheme, the second is introduced the section and can be supplied the cooling water to introduce, the cooling water flows to the second cooling section immediately, the second cooling section absorbs the heat along the length and/or the width direction of core, the cooling water is finally drawn forth the section from the second and is flowed outside the core, realize cooling cycle, in this process, the cooling water flows to in the second extension section, make the cooling water can flow to a plurality of position points on the core thickness direction and absorb heat, and make the cooling water can flow to in the first location boss, be closer to the stereoplasm bearing shell of putting to on the location boss this moment during the cooling, the heat dissipation of stereoplasm bearing shell is strengthened, make the cooling effect obtain further promotion.

Preferably, a hanging table is fixedly connected to one side of the insert, and a hanging groove for abutting and positioning the hanging table is formed in the hole wall of the mounting hole.

Through adopting above-mentioned technical scheme, hang the butt location between platform and the hanging groove and can make the locating position when installing of inserting get the location, play the effect of preventing slow-witted installation.

Preferably, the corner of the mold core is provided with a positioning block, the corner of the female mold is provided with a splicing groove, and the positioning block and the splicing groove are spliced and positioned.

Through adopting above-mentioned technical scheme, at the in-process that core and die opened and shut each other, the locating piece can make the corner of core and die obtain the location with the splice groove, and the precision of opening and shutting obtains promoting, and the structure is practical.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the outer edge of the hard bearing shell is buckled by the first positioning boss, the hard bearing shell is subjected to offset positioning, meanwhile, the first step is abutted against the first side blocking part, the second positioning boss is abutted against the second side blocking part, so that one side of the hard bearing shell is subjected to bearing positioning, and under the action of bearing positioning and offset positioning, the stability of the hard bearing shell during placement is improved;

2. the positioning groove can be independently processed on the insert, so that the difficulty in processing the core is reduced, and the possibility of scrapping the whole core due to the processing error of the positioning groove is reduced;

3. in the process that the mold core and the female mold are mutually opened and closed, the positioning block and the splicing groove can position the corners of the mold core and the female mold, and the opening and closing precision between the mold core and the female mold is improved.

Drawings

Fig. 1 is a schematic structural diagram of an encapsulating member.

Figure 2 is a schematic view of another perspective of the overmold.

Fig. 3 is a schematic structural view of the molding die of the present application.

FIG. 4 is a schematic diagram of the structure of the stationary mold in the present application.

Fig. 5 is a schematic structural diagram of a moving mold in the present application.

FIG. 6 is a cross-sectional view of the female mold and core of the present application.

FIG. 7 is a schematic view of the assembly of the female mold and the core of the present application.

FIG. 8 is a schematic view of the construction of the core and overmold of the present application.

Fig. 9 is an enlarged view at a in fig. 8.

FIG. 10 is a schematic view of the assembled relationship between the core and insert of the present application.

Fig. 11 is a schematic structural diagram of the plate a, the first flow channel, and the die of the present application.

FIG. 12 is a schematic view of the structure of the plate B, the second flow channel and the core of the present application.

Description of reference numerals:

1. a plastic layer;

2. a hard bearing shell; 21. a body portion; 211. a convex column; 212. reinforcing ribs; 22. a first side stop; 23. a second side stop;

3. fixing a mold; 31. a fixed die base plate; 32. a water gap plate; 33. a, a plate; 331. a first through hole; 34. a female die; 341. forming a groove; 342. splicing grooves;

4. moving the mold; 41. a movable mould seat plate; 42. cushion blocks; 43. b, plate; 431. a second through hole; 44. a push rod fixing plate; 45. pushing the plate; 46. a thimble;

47. a core; 471. a first positioning boss; 472. a second positioning boss; 473. positioning blocks; 474. a first step; 475. a second step; 476. an insert; 4761. a positioning groove; 47611. a first receptacle portion; 47612. a second receptacle portion; 4762. hanging a table; 477. mounting holes; 4771. a hanging groove;

5. a molding cavity;

6. a first flow passage; 61. a first introduction section; 62. a first lead-out section; 63. a first cooling section; 64. a first extension section;

7. a second flow passage; 71. a second introduction section; 72. a second cooling section; 73. a second lead-out section; 74. a second extension.

Detailed Description

The present application is described in further detail below with reference to figures 1-12.

Referring to fig. 1 and 2, a shell-shaped rubber-covered member mainly includes a plastic layer 1 near an outer surface and a hard bearing shell 2 near an inner surface, where the hard bearing shell 2 may be metal, such as aluminum, copper, or the like, or may be hard plastic, such as ABS or PP, or the like. The hard bearing shell 2 mainly comprises a body part 21, a first side blocking part 22 and a second side blocking part 23, in this embodiment, the body part 21 is in a shape of a plate similar to a T, the first side blocking part 22 and the second side blocking part 23 are integrally connected with the body part 21, the length directions of the first side blocking part 22 and the second side blocking part 23 are respectively arranged along the peripheral outline of the body part 21, and two ends of the first side blocking part 22 and the second side blocking part 23 are connected, the first side blocking part 22 and the second side blocking part 23 extend towards the outside of the same side of the body part 21, the extension length of the first side blocking part 22 is greater than that of the second side blocking part 23, one side edge of the body part 21 close to the first side blocking part 22 is arranged in an arc shape, so that the first side blocking part 22 is arranged in an arc shape in this embodiment, at this time, a plastic layer 1 is injected on one side surface of the body part 21 and one side surface of the first side blocking, and defining the surface of one side of the hard bearing shell 2 opposite to the plastic layer 1 as an inner surface, wherein the plastic layer 1 can be made of TPU or TPR and the like.

In addition, the body part 21 is fixed with the electric equipment, so as to realize the fixed installation of the rubber-coated piece, wherein, the inner surface of the body part 21 is provided with a convex column 211, the convex column 211 is arranged in a cylinder shape, one end of the convex column 211 is integrally connected with the hard bearing shell 2, a plurality of reinforcing ribs 212 are arranged between the convex column 211 and the body part 21, the reinforcing ribs 212 are respectively and integrally connected with the body part 21 and the convex column 211, the reinforcing ribs 212 are a plurality of reinforcing ribs, the plurality of reinforcing ribs 212 are arranged in a criss-cross manner, the convex column 211 is provided with an internal thread in a concave manner, and the hard bearing shell 2 and the electric equipment can be fixed with each other by driving screws into the convex.

The embodiment of the application discloses rubber coating piece forming die. Referring to fig. 3, the mold for molding the rubber-coated part comprises a fixed mold 3 and a movable mold 4, wherein the fixed mold 3 and the movable mold 4 are respectively installed on an injection molding machine, and the fixed mold 3 and the movable mold 4 are opened and closed mutually under the action of the injection molding machine, so that the mold opening and the mold closing of the mold are realized.

Referring to fig. 4, the fixed mold 3 mainly comprises a fixed mold seat plate 31, a nozzle plate 32, an a plate 33 and a concave mold 34, the fixed mold seat plate 31, the nozzle plate 32 and the a plate 33 are fixedly connected in sequence, the concave mold 34 is fixedly installed on the a plate 33, and the fixed mold seat plate 31 is fixedly installed on an injection molding machine, so that the fixed mold 3 and the injection molding machine are fixedly installed with each other. The concave die 34 is provided with a molding groove 341 in a concave manner, the shape of the molding groove 341 is consistent with the shape of the outer surface of the rubber-coated part, the fixed die 3 is provided with a pouring runner which sequentially penetrates through the fixed die seat plate 31, the water gap plate 32, the A plate 33 and the concave die 34, the pouring runner is communicated with the molding groove 341, and the pouring runner is used for plastic to flow in.

Referring to fig. 5, the movable mold 4 includes a movable mold base plate 41, two cushion blocks 42, a B plate 43, a push rod fixing plate 44, a push plate 45, an ejector pin 46, a mold core 47, and the like, the number of the cushion blocks 42 is two, the movable mold base plate 41, the two cushion blocks 42, and the B plate 43 are sequentially and fixedly connected, the mold core 47 is installed on the B plate 43, the mold core 47 is provided with a first positioning boss 471 and a second positioning boss 472, the first positioning boss 471 and the second positioning boss 472 are used for buckling and positioning a rigid connection shell, an installation cavity is formed between the two cushion blocks 42, the push plate 45 and the push rod fixing plate 44 are located in the installation cavity, the push plate 45 is fixed to the push rod fixing plate 44, the ejector pin 46 is fixedly installed on the push rod fixing plate 44, the ejector pin 46 sequentially penetrates through the B plate 43 and the mold core 47, the push plate 45 is connected with a machine table of the injection molding machine, and the machine table of the injection molding machine pushes the push plate 45 to move, so that the ejector pins 46 extend out relative to the mold cores 47, and the stripping action of the workpiece is realized.

Referring to fig. 6 and 7, when the fixed mold 3 and the movable mold 4 are closed to each other, the mold core 47 and the female mold 34 are abutted to each other, at this time, a cavity 5 is formed between the surface of the hard connecting shell fastened to the first positioning boss 471 and the second positioning boss 472 and the wall of the molding groove 341, the shape of the molding cavity 5 is consistent with the shape of the plastic layer 1, that is, the molding cavity 5 having the shape consistent with the shape of the plastic layer 1 is formed between the mold core 47 and the female mold 34, and the plastic is injected into the pouring runner, so that the molding of the plastic layer 1 can be realized.

Furthermore, a positioning block 473 is arranged at the corner of the mold core 47, the positioning block 473 is arranged in a square shape, the positioning block 473 is integrally connected with the mold core 47, a splicing groove 342 is formed in the corner of the female mold 34 in a recessed manner, the shape of the splicing groove 342 is consistent with that of the positioning block 473, when the mold core 47 and the female mold 34 are combined, the positioning block 473 and the splicing groove 342 are inserted and positioned, the corners of the mold core 47 and the female mold 34 can be positioned by the positioning block 473 and the splicing groove 342, and the opening and closing precision of the female mold 34 and the mold core 47 is improved.

Referring to fig. 8, to realize the positioning of the hard bearing shell 2, specifically, the mold core 47 is arranged in a rectangular plate shape, the parting surface of the mold core 47 has a first step 474 and a second step 475, the height of the second step 475 is higher than that of the first step 474, it should be noted that the parting surface of the mold core 47 is a side surface of the mold core 47 facing the female die 34, in addition, a first positioning boss 471 and a second positioning boss 472 are respectively connected with the mold core 47 integrally, the first positioning boss 471 and the second positioning boss 472 protrude towards one side of the female die 34 relative to the mold core 47, the first positioning boss 471 extends to the first step 474 and the second step 475 respectively, the outer edge contour of the first positioning boss 471 is matched with the outer edge contour of the hard bearing shell 2, that is, the outer edge contour of the first positioning boss 471 is arranged in a T-like shape, and the outer edge contour of the first positioning boss 471 on the first step is the same as the outer edge contour of the first side blocking part 22, namely, the side surface of the first positioning boss 471 close to the first step 474 is arc-shaped; meanwhile, the radian of one side surface of the first positioning boss 471 facing the female die 34 is matched with the radian of the inner surface of the body part 21 so as to be matched with the arc shape of the first side baffle part 22; in addition, the outer edge profile of the first positioning projection 471 on the second step 475 is the same as the outer edge profile of the second side stop 23.

The second positioning boss 472 is located on the second step 475, the second positioning boss 472 is close to the first positioning boss 471, one side of the second positioning boss 472 is integrally connected with one side of the first positioning boss 471, and the second positioning boss 472 extends along the side contour of the first positioning boss 471 on the second step 475, so that the contour of the second positioning boss 472 is consistent with the contour of the second side barrier portion 23.

When the hard bearing shell 2 is buckled and positioned, the hard bearing shell 2 is placed on the mold core 47, at the moment, the first step 474 is abutted against one side, away from the body part 21, of the first side blocking part 22, the surface, facing the female die 34, of one side of the first step 474 is attached to the inner surface of the body part 21, the second positioning boss 472 is abutted against one side, away from the body part 21, of the second side blocking part 23, and the hard bearing shell 2 is supported by the first step 474 and the second step 475, so that the hard bearing shell 2 can be placed at a proper injection molding angle, and positioning is further realized; meanwhile, the side wall of the first positioning boss 471, which is close to the first step 474, is attached to the inner surface of the first side blocking portion 22, the side wall of the first positioning boss 471, which is close to the second step 475, is attached to the inner surface of the second side blocking portion 23, at the moment, the first positioning boss 471 limits the freedom of movement of the hard bearing shell 2, which slides on the surface of the mold core 47, the outer edge of the first positioning boss 471 buckles the outer edge of the hard bearing shell 2, the hard bearing shell 2 realizes offset positioning, and finally the hard bearing shell 2 is positioned, so that the stability of the hard bearing shell 2 when being placed is finally improved.

Referring to fig. 9 and 10, the first positioning boss 471 is provided with a positioning groove 4761 for fitting and positioning the convex pillar 211 and the reinforcing rib 212, wherein the core 47 includes an insert 476, a mounting hole 477 is penetratingly provided on the core 47, the insert 476 is fitted and fixed on the core 47 through the mounting hole 477, the insert 476 is usually mounted on the core 47 in a transition fit manner, in addition, a hanging table 4762 is fixedly connected to one side of the insert 476, the hanging table 4762 is usually integrally connected with the insert 476, a hanging groove 4771 for abutting and positioning the hanging table 4762 is concavely provided on a hole wall of the mounting hole 477 from outside to inside, the shape of the hanging groove 4771 is consistent with the shape of the hanging table 4762, and the hanging table 4762 plays a fool-proof role when the insert 476 is mounted.

In addition, the positioning groove 4761 is arranged on one side surface of the insert 476 facing the die 34 from outside to inside, the positioning groove 4761 comprises a first accommodating portion 47611 and a second accommodating portion 47612 which are communicated with each other, the opening shape of the first accommodating portion 47611 is consistent with the shape of the convex column 211, the opening shape of the second accommodating portion 47612 is matched with the shapes of a plurality of reinforcing ribs 212, the convex column 211 can be embedded into the first accommodating portion 47611, and the reinforcing ribs 212 can be embedded into the second accommodating portion 47612, so that the convex column 211 and the reinforcing ribs 212 are partially accommodated and positioned, here, the shapes of the convex column 211 and the reinforcing ribs 212 are complicated, the positioning groove 4761 is arranged on the insert 476, the insert 476 can be separately machined, and the difficulty in machining the core 47 is reduced.

Referring to fig. 11, in order to realize carrying out even cooling to plastic layer 1, in order to promote the shaping quality of plastic layer 1, be provided with first cooling system in the die 34, wherein, first cooling system includes that a plurality of first runners 6 that are the interval setting along the width and/or the length direction of die 34, in this embodiment, a plurality of first runners 6 are the interval setting along the width direction of die 34, the specific quantity that sets up of first runner 6 can be according to actual need corresponding setting, for example can set up three, four or five etc. this place does not restrict the specific quantity that sets up of first runner 6.

Specifically, the first flow channel 6 includes a first introduction section 61, a first cooling section 63, a first extraction section 62, and a first extension section 64, the first introduction section 61, the first cooling section 63, the first extraction section 62, and the first extension section 64 are all formed by drilling in the die 34, and the first introduction section 61, the first cooling section 63, the first extraction section 62, and the first extension section 64 are all embedded in the die 34. The first cooling section 63 is arranged along the length and/or width direction of the die 34, in this embodiment, the first cooling section 63 is arranged along the length direction of the die 34, the first introducing section 61 and the first leading-out section 62 are arranged along the width direction of the die 34, the first introducing section 61 and the first leading-out section 62 are parallel to each other, one end of the first introducing section 61 and one end of the first leading-out section 62 are both opened at one side surface of the die 34 close to the a plate 33, the other end of the first introducing section 61 is communicated with one end of the first cooling section 63, the other end of the first leading-out section 62 is communicated with the other end of the first cooling section 63, and at this time, two ends of the first flow channel 6 respectively penetrate through the die 34.

When the plastic is cooled, cooling water is usually adopted for cooling, in order to introduce the cooling water, a first through hole 331 respectively communicated with the first leading-in section 61 and the first leading-out section 62 is arranged on the A plate 33 in a penetrating way, a water inlet pipe is externally connected at the first through hole 331 close to the first leading-in section 61, a water outlet pipe is externally connected at the first through hole 331 close to the first leading-out section 62, the cooling water can flow into the first leading-in section 61 from the A plate 33 through the water inlet pipe, the cooling water immediately flows into the first cooling section 63, the cooling water then flows from one end to the other end of the first cooling section 63, finally the cooling water flows through the first leading-out section 62 and flows out of the A plate 33 from the water outlet pipe, the cooling water takes away heat in the female die 34 to realize cooling, the plastic layer 1 is cooled, meanwhile, a plurality of first flow channels 6 arranged at intervals can cool and radiate a plurality of positions of the female die 34, the cooling effect is uniform.

Further, the first extension section 64 is arranged along the thickness direction of the die 34, the first cooling section 63 is communicated with one end of the first extension section 64, the first extension section 64 may be multiple, for example, two or three, the multiple first extension sections 64 are arranged at intervals along the length direction of the first cooling section 63, and here, the cooling water may simultaneously flow into the first extension section 64 when flowing in the first cooling section 63, so that the cooling water may flow to multiple position points in the thickness direction of the die 34 to absorb heat, and the cooling effect is further improved.

Referring to fig. 12, correspondingly, a second cooling system is arranged in the mold core 47, and the second cooling system is used for cooling one side of the plastic layer close to the hard bearing shell 2, so that the plastic layer 1 is cooled more uniformly.

Specifically, the second cooling system includes a plurality of second flow channels 7 arranged at intervals along the width and/or length direction of the core 47, in this embodiment, the plurality of second flow channels 7 are arranged at intervals along the length direction of the core 47, and the specific number of the second flow channels 7 may be correspondingly arranged according to actual needs, for example, three, four, or five second flow channels may be arranged, where the specific number of the second flow channels 7 is not limited.

The second flow channel 7 includes a second introduction section 71, a second cooling section 72, a second extraction section 73, and a second extension section 74, the second introduction section 71, the second cooling section 72, the second extraction section 73, and the second extension section 74 are all formed by drilling in the core 47, and the second introduction section 71, the second cooling section 72, the second extraction section 73, and the second extension section 74 are all embedded in the core 47. The second cooling section 72 is disposed along the length and/or width direction of the core 47, in the present embodiment, the second cooling section 72 is disposed to extend along the width direction of the core 47, and the second introduction section 71 are disposed to extend along the width direction of the core 47, and the second introduction section 71 and the second introduction section 73 are parallel to each other, one end of the second introduction section 71 and one end of the second introduction section 73 are respectively opened at one side surface of the core 47 near the B plate 43, the other end of the second introduction section 71 is communicated with one end of the second cooling section 72, and the other end of the second introduction section 73 is communicated with the other end of the second cooling section 72, when both ends of the second flow passage 7 respectively penetrate through the core 47.

During cooling, cooling water is adopted for cooling, in order to introduce the cooling water, a second through hole 431 which is respectively communicated with the second leading-in section 71 and the second leading-out section 73 is arranged on the B plate 43 in a penetrating way, a water inlet pipe is externally connected at the position of the second through hole 431 which is close to the second leading-in section 71, a water outlet pipe is externally connected at the position of the second through hole 431 which is close to the second leading-out section 73, the cooling water can flow into the second leading-in section 71 from the B plate 43 through the water inlet pipe, the cooling water immediately flows into the second cooling section 72, the cooling water then flows from one end to the other end of the second cooling section 72, finally the cooling water flows through the second leading-out section 73 and flows out of the B plate 43 from the water outlet pipe, the cooling water removes heat in the mold core 47 to realize cooling circulation, the cooling of the hard bearing shell 2 is realized, the cooling of the plastic layer 1 is further realized, meanwhile, a plurality of second flow channels 7 which are arranged, the cooling effect is uniform.

Further, a second extension 74 is disposed along the thickness direction of the female die 34, the second cooling section 72 is communicated with one end of the second extension 74, and the second extension 74 extends into the first positioning boss 471; in addition, the second extending section 74 may have a plurality of channels, such as two channels or three channels, and the plurality of second extending sections 74 are disposed at intervals along the length direction of the second cooling section 72.

Here, the cooling water can flow to in the second extension section 74 simultaneously when flowing in second cooling section 72 for the cooling water can flow to the mould core 47 thickness direction on a plurality of position points carry out the heat absorption, and the cooling effect obtains further promotion, makes the cooling water more be close to and puts the stereoplasm bearing shell 2 to first location boss 471, and the reinforcing dispels the heat to stereoplasm bearing shell 2, makes the cooling effect obtain further promotion.

The implementation principle of a rubber coating piece forming die of the embodiment of the application is as follows: first location boss 471 carries out the lock with 2 outer edges of stereoplasm bearing shell, inlay projection 211 and strengthening rib 212 simultaneously and establish to positioning groove 4761 in, it is spacing to realize moving the circumference of stereoplasm bearing shell 2, it produces towards the skew of circumferential direction to reduce stereoplasm bearing shell 2, and simultaneously, first step 474 and first side fender portion 22 looks butt, it is spacing to realize moving first side fender portion 22, second location boss 472 and second side fender portion 23 butt, it is spacing to realize moving second side fender portion 23, realize carrying out the bearing location to one side of stereoplasm bearing shell 2, stereoplasm bearing shell 2 is under the effect that obtains bearing location and skew location, the stability when stereoplasm bearing shell 2 puts finally obtains promoting.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a rubber coating spare forming die, includes cover half (3) and movable mould (4), be provided with die (34) on cover half (3), be provided with core (47) on movable mould (4), open and shut each other between core (47) and die (34), when core (47) with die (34) compound die, form between core (47) and die (34) shape and plastic layer (1) unanimous one-tenth die cavity (5), its characterized in that: the parting surface of the mold core (47) is provided with a first step (474) and a second step (475), the height of the second step (475) is higher than that of the first step (474), the mold core (47) is respectively provided with a first positioning boss (471) and a second positioning boss (472), the first positioning boss (471) is provided with a positioning groove (4761) for embedding and positioning a convex column (211) and a reinforcing rib (212), the outer edge profile of the first positioning boss (471) is matched with the outer edge profile of the hard bearing shell (2), the outer edge of the first positioning boss (471) is used for buckling the outer edge of the hard bearing shell (2), the first step (474) is used for abutting against the first side blocking part (22), and the second positioning boss (472) is used for abutting against the second side blocking part (23).

2. The molding die for the rubber-covered piece according to claim 1, wherein: the core (47) comprises an insert (476), a mounting hole (477) is arranged on the core (47) in a penetrating way, the insert (476) is embedded and fixed on the core (47) through the mounting hole (477), and the positioning groove (4761) is arranged on the insert (476).

3. The molding die for the rubber-covered piece according to claim 1, wherein: be provided with first cooling system in die (34), first cooling system includes a plurality of ways along the width and/or the length direction of die (34) are first runner (6) that the interval set up, the both ends of first runner (6) run through respectively die (34).

4. The molding die for the rubber-covered piece according to claim 3, wherein: first runner (6) include first introduction section (61), first cooling section (63), first lead out section (62) and first extension section (64), first cooling section (63) are along the length and/or the width direction setting of die (34), the one end of first introduction section (61) is in open on die (34), the other end of first introduction section (61) with the one end intercommunication of first cooling section (63), the one end of first introduction section (62) is in open on die (34), the other end of first introduction section (62) with the other end intercommunication of first cooling section (63), first extension section (64) are along the thickness direction setting of die (34), first cooling section (63) with first extension section (64) intercommunication.

5. The molding die for the rubber-covered piece according to claim 1, wherein: a second cooling system is arranged in the mold core (47), the second cooling system comprises a plurality of second flow passages (7) which are arranged at intervals along the width direction and/or the length direction of the mold core (47), and two ends of each second flow passage (7) penetrate through the mold core (47) respectively.

6. The molding die for the rubber-covered piece according to claim 5, wherein: the second flow channel (7) comprises a second inlet section (71), a second cooling section (72), a second outlet section (73) and a second extension section (74), the second cooling section (72) is arranged along the length and/or width direction of the core (47), one end of the second introduction section (71) is opened on the core (47), the other end of the second introduction section (71) is communicated with one end of the second cooling section (72), one end of the second lead-out section (73) opens onto the core (47), the other end of the second leading-out section (73) is communicated with the other end of the second cooling section (72), the second extension (74) is provided along the thickness direction of the core (47), the second cooling section (72) is communicated with the second extension section (74), and the second extension section (74) extends into the first positioning boss (471).

7. The molding die for the rubber-covered piece according to claim 2, wherein: one side of the insert (476) is fixedly connected with a hanging table (4762), and the hole wall of the mounting hole (477) is provided with a hanging and holding groove (4771) for abutting and positioning the hanging table (4762).

8. The molding die for the rubber-covered piece according to claim 1, wherein: the die is characterized in that a positioning block (473) is arranged at the corner of the mold core (47), a splicing groove (342) is formed in the corner of the female die (34), and the positioning block (473) is spliced and positioned with the splicing groove (342).

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