CN115195038A - Leather bag injection mould and leather bag forming method - Google Patents
Leather bag injection mould and leather bag forming method Download PDFInfo
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- CN115195038A CN115195038A CN202210796121.6A CN202210796121A CN115195038A CN 115195038 A CN115195038 A CN 115195038A CN 202210796121 A CN202210796121 A CN 202210796121A CN 115195038 A CN115195038 A CN 115195038A
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- 238000002347 injection Methods 0.000 title claims abstract description 69
- 239000007924 injection Substances 0.000 title claims abstract description 69
- 239000010985 leather Substances 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 238000007493 shaping process Methods 0.000 claims abstract description 19
- 239000011550 stock solution Substances 0.000 claims description 40
- 238000004891 communication Methods 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 description 13
- 239000000243 solution Substances 0.000 description 9
- 239000002699 waste material Substances 0.000 description 9
- 238000007789 sealing Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 230000008719 thickening Effects 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2669—Moulds with means for removing excess material, e.g. with overflow cavities
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The application relates to a leather bag injection mold and a leather bag forming method, which comprise the following steps: the die box is internally provided with a die cavity; the mold core is fixed on the mold box and positioned in the mold cavity, and a liquid cavity is formed between the mold cavity and the mold core; the injection hole is arranged at one end of the die box and communicated with the cavity; and the overflow hole is arranged in the die box and communicated with one end of the cavity, which is far away from the injection hole. This application has the effect of the shaping quality of assurance rubber leather bag.
Description
Technical Field
The application relates to the field of leather bag processing, in particular to a leather bag injection mold and a leather bag forming method.
Background
The leather bag is simply a bag-shaped structure with a soft outer skin, which generally has at least one opening, and can be divided into an elastic leather bag and a non-elastic leather bag according to the material of the outer skin, and when the leather bag is used, the selection needs to be made according to the different using environments. The rubber has the advantages of good expansion resistance, elasticity, flexibility and the like, and is generally used as a main raw material of the elastic leather bag.
However, the forming of the rubber bag, especially the forming of the rod-shaped bag, has been a relatively difficult problem to solve in the art, mainly because the length of the rod-shaped bag is long, the thickness of each part of the wall of the bag and the uniformity of the material directly affect the straightness of the formed rod-shaped bag, and once the thickness or uniformity of the wall of the bag is not uniform, the rod-shaped bag is bent after being formed, or the expansion degree of each part is not uniform during inflation, so that the forming quality of the bag is low and the requirements are difficult to meet.
Disclosure of Invention
In order to ensure the forming quality of the rubber bag, the application provides a rubber bag injection mold and a rubber bag forming method.
The invention aims to provide a leather bag injection mold, which adopts the following technical scheme:
a bladder injection mold comprising:
the die box is internally provided with a die cavity; the mold core is fixed on the mold box and positioned in the mold cavity, and a liquid cavity is formed between the mold cavity and the mold core; the injection hole is arranged at one end of the die box and communicated with the cavity; and the overflow hole is arranged in the die box and communicated with one end of the cavity, which is far away from the injection hole.
Through adopting above-mentioned technical scheme, when the gasbag shaping, push the die cavity with rubber stoste through the injection hole in, then, rubber stoste will flow along the die cavity between core and the die cavity gradually, abundant whole liquid cavity of filling, at continuous rubber stoste filling in-process, the rubber stoste of squeezing into in the die cavity at first will be extruded from the overflow hole, thereby realize on the one hand can discharging the air in the liquid cavity, guarantee that abundant the filling of rubber stoste is in whole liquid cavity, guarantee that the skin bag wall thickness is the same, on the other hand, can extrude the not enough even rubber stoste of consistency in the liquid cavity at first, extrude through the overflow hole, thereby guarantee the degree of consistency of the rubber stoste in the liquid cavity, and then make the skin bag product quality after the shaping higher.
Optionally, a closing part is arranged at a position of the mold box corresponding to the overflow hole, and the closing part can open or close the overflow hole.
Through adopting above-mentioned technical scheme, the closure piece of adoption can seal the overflow hole after certain rubber stoste flows in the overflow hole to the injection of subsequent rubber stoste of being convenient for guarantees the inside pressure of liquid chamber, guarantees the shaping of gasbag, avoids extravagant more rubber stoste.
Optionally, a rotary plug is rotatably arranged at a position of the die box corresponding to the overflow hole, and a communication hole is formed at an eccentric position of the rotary plug; the rotary plug can seal the overflow hole or enable the communication hole to be communicated with the overflow hole when rotating.
Through adopting above-mentioned technical scheme, when needs realize overflowing of rubber stoste through the overflow hole, rotate rotatory stopper to make the intercommunicating pore and the overflow hole intercommunication of rotatory stopper, can realize that the rubber stoste is discharged from the overflow hole, when needs seal the overflow hole, rotate rotatory stopper, realize the dislocation of overflow hole and intercommunicating pore, can realize the closure of overflow hole, thereby avoid the rubber stoste to spill over from the overflow hole.
Optionally, a containing groove is formed in the mold box corresponding to the position of the overflow hole; the rotating plug is rotatably arranged in the accommodating groove; the outside detachable of storage tank is provided with the clamping ring, the rotatory stopper can be pressed to the clamping ring, the clamping ring corresponds the position shaping discharge gate in overflow hole.
Through adopting above-mentioned technical scheme, through the cooperation of rotatory stopper and clamping ring, can realize rotatory stopper in holding the inslot internal rotation on the one hand, on the other hand can avoid rotatory stopper to break away from and hold the groove, and when the remaining waste material in the clean appearance groove of needs, can directly dismantle the clamping ring, then take off rotatory stopper and clean.
Optionally, the rotary plug is in a frustum shape, and the communication hole extends to the peripheral surface of the rotary plug; the diameter of one end, far away from the overflow hole, of the rotary plug is smaller than that of the other end of the rotary plug.
Through adopting above-mentioned technical scheme, the rotatory stopper that sets up is the frustum form, and its one end diameter of keeping away from the overflow hole is less, and the waste material that the rubber stoste produced deposits up behind the clearance between rotatory stopper and the appearance groove, even the rubber stoste produces and solidifies, also can be convenient take out the waste material from the container tank, be convenient for it clean.
Optionally, the mold box includes: bottom die; the cover die is detachably arranged on the upper side of the bottom die; the cavity is formed on the joint surface of the bottom die and the cover die.
By adopting the technical scheme, after the leather bag is formed, the cover die can be taken down from the upper side of the bottom die, so that the cavity can be opened, and then the leather bag can be taken out.
Optionally, a support is arranged at one end of the mold core, and the support closes one end of the mold cavity far away from the injection hole; the supporting piece is detachably arranged between the cover die and the bottom die.
Through adopting above-mentioned technical scheme, set up in support piece on the one hand can support the fixed of core in the position of die cavity, on the other hand, after opening die block and cover mould, can take out the core from the die cavity through support piece, then directly peel off the leather bag from the core can, easy operation.
Optionally, a slot is formed at one end of the mold box away from the injection hole; the supporting piece is rotatably arranged in the slot, and the core can be driven to rotate in the cavity by rotating the supporting piece.
Through adopting above-mentioned technical scheme, in the injection process that carries out the leather bag, drive the core through support piece and rotate in the die cavity is continuous, can strengthen the mobility of rubber stoste in the sap cavity, make the quick abundant packing of rubber stoste, avoid the transition thickening of rubber stoste, guarantee the degree of consistency of the rubber stoste of rubber injection in-process, furthermore, in the rubber solidification, the leather bag shaping back, rotate support piece, drive the core and rotate, thereby it rotates in the leather bag on support piece surface to drive the shaping in step, thereby be convenient for break away from between leather bag and the die cavity.
In a second aspect, the present application provides a method for forming a leather bag, which adopts the following technical scheme:
a leather bag forming method comprises the following steps:
opening an overflow hole of the die box, and injecting the heated and melted rubber stock solution into the liquid cavity through an injection hole of the die box;
after the rubber stock solution flows out of the overflow hole and the consistency of the rubber stock solution flowing out of the overflow hole is uniform, closing the overflow hole;
and opening the mould box and taking out the leather bag after the stock solution in the liquid cavity is solidified.
Through adopting above-mentioned technical scheme, when the gasbag shaping, push the intracavity with rubber stoste through the injection hole, then, rubber stoste will flow along the sap cavity gradually, abundant whole sap cavity of filling, at the continuous injection in-process of rubber stoste, the rubber stoste of initial injection sap cavity will be extruded from the overflow hole, thereby realize on the one hand can be with the air escape in the sap cavity, guarantee that abundant the filling of rubber stoste is in whole sap cavity, guarantee that the skin bag wall thickness is the same, on the other hand, can be with the not enough even rubber stoste of initial crowded income sap cavity internal consistency from the overflow hole discharge, thereby guarantee the consistency of the rubber stoste of sap cavity even, make the skin bag product quality after the shaping higher.
Optionally, in the process of injecting the rubber stock solution into the liquid cavity, rotating the mold core to fully fill the rubber stock solution into the liquid cavity;
and after the rubber bag is solidified and formed, rotating the mold core to separate the rubber bag from the mold cavity.
Through adopting above-mentioned technical scheme, at the injection in-process of rubber stoste, continuous rotation core can increase the mobility of stoste in the sap cavity, avoids stoste transition thickening, and support piece is rotated to the skin pocket shaping back, drives the core and rotates to drive the shaping in the skin pocket rotation on support piece surface in step, thereby be convenient for break away from between skin pocket and the die cavity.
In summary, the present application includes at least one of the following beneficial technical effects:
when the gasbag shaping, push the die cavity with rubber stoste through the injection hole, then, rubber stoste will flow along the die cavity between core and the die cavity gradually, abundant whole liquid cavity of filling, at continuous rubber stoste filling in-process, the rubber stoste of squeezing into in the die cavity at first will be extruded from the overflow hole, thereby realize can be with the air escape in the liquid cavity on the one hand, guarantee that abundant the filling of rubber stoste is in whole liquid cavity, guarantee that the leather bag wall thickness is the same, on the other hand, can extrude the not enough even rubber stoste of the thickness of liquid cavity at first, extrude through the overflow hole, thereby guarantee the degree of consistency of the rubber stoste of liquid cavity, and then make the leather bag product quality after the shaping higher.
The adopted closing piece can close the overflow hole after certain rubber stock solution flows out of the overflow hole, so that the subsequent injection of the rubber stock solution is facilitated, the pressure in the liquid cavity is ensured, the forming of the air bag is ensured, and more rubber stock solution is prevented from being wasted.
Through adopting above-mentioned technical scheme, set up in support piece on the one hand can support the fixed of core in the position of die cavity, on the other hand, after opening die block and cover mould, can take out the core from the die cavity through support piece, then directly peel off the leather bag from the core can, easy operation.
Drawings
FIG. 1 is a schematic sectional view of a bladder injection mold according to an embodiment of the present application;
FIG. 2 is an exploded schematic view of a bladder injection mold in another embodiment of the present application;
FIG. 3 is a schematic view of a bottom mold of the bladder injection mold in another embodiment of the present application;
FIG. 4 is a schematic illustration of a core structure of a bladder injection mold in another embodiment of the present application;
FIG. 5 is a schematic view of a closure arrangement for a bladder injection mold in another embodiment of the present application;
FIG. 6 is a schematic cross-sectional view of a tapered groove structure of a bladder injection mold in another embodiment of the present application;
FIG. 7 is an enlarged view of section A of FIG. 6;
FIG. 8 is an exploded schematic view of a support member structure of a bladder injection mold in another embodiment of the present application;
FIG. 9 is an exploded schematic view of a core structure of a bladder injection mold in another embodiment of the present application;
fig. 10 is a schematic view of a pressing bolt of a core structure of a bladder injection mold according to another embodiment of the present application.
Description of reference numerals: 1. a mold box; 11. an injection hole; 111. a flow channel; 12. an overflow aperture; 121. a containing groove; 122. pressing a ring; 123. a discharge port; 13. bottom die; 131. a convex plate; 132. a concave arc; 14. covering the mold; 141. a yielding groove; 15. positioning holes; 151. positioning pins; 16. inserting slots; 17. a conical groove; 2. a core; 21. a convex column; 22. a limiting block; 3. a cavity; 4. a support member; 41. a support pillar; 42. a support disc; 43. a groove; 44. a limiting groove; 45. a pull ring; 451. a first annular portion; 452. a second annular portion; 5. a rotating plug; 51. a communicating hole; 52. rotating the groove; 6. a conical ring; 61. circularly cutting a hole; 62. a limiting ring; 7. and pressing the bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, belong to the scope of protection of the embodiments of the present invention.
It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions such as references to "first", "second", and the like in the embodiments of the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the embodiments of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "fixed", and the like are to be understood broadly, for example, "fixed" may be a fixed connection, a detachable connection, or an integral body; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or indirectly through intervening components, or may be in the form of a member or elements that are in a relationship to one another unless expressly specified otherwise. Specific meanings of the above terms in the embodiments of the present invention may be understood by those of ordinary skill in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination of the technical solutions should not be considered to exist, and is not within the protection scope claimed by the embodiments of the present invention.
The embodiment of the application discloses leather bag injection mold, it is uneven that mainly used produces the thickness easily among the solution rubber leather bag injection moulding process, and material density is different, leads to the relatively poor problem of quality, for this reason, this application mainly adopts following thinking:
referring to fig. 1, the leather bag injection mold comprises a mold box 1 and a mold core 2, wherein a mold cavity 3 is formed in the mold box 1; the mold core 2 is fixed on the mold box 1 and positioned in the mold cavity 3, and a liquid cavity is formed between the mold cavity 3 and the mold core 2; an injection hole 11 is formed at one end of the die box 1, the injection hole 11 is communicated with the die cavity 3, an overflow hole 12 is formed at one end of the die box 1 far away from the injection hole 11, and the overflow hole 12 is communicated with one end of the die cavity 3 far away from the injection hole 11.
The following effects are achieved:
in the injection process of the leather bag, push into the die cavity 3 through the injection hole 11 with the rubber stoste, then, the rubber stoste will flow along the sap cavity between 2 and the die cavity 3 of core gradually, the whole sap cavity of abundant packing, in continuous rubber stoste filling process, the rubber stoste of squeezing into in the die cavity 3 at first will be extruded from overflow hole 12, thereby realize on the one hand can with the air escape in the sap cavity, guarantee that the abundant packing of rubber stoste is in whole sap cavity, guarantee that the leather bag wall thickness is the same, on the other hand, can extrude the not enough even rubber stoste of consistency of squeezing into the sap cavity at first, extrude through overflow hole 12, thereby guarantee the degree of consistency of the rubber stoste in the sap cavity, and then make the leather bag product quality after the shaping higher.
In order to facilitate the formed leather bag to be taken out from the mold box 1, the mold box 1 can be formed into a split structure, which is described in detail in another embodiment of the present application:
referring to fig. 2 and 3, the mold box 1 is a rectangular parallelepiped structure, the mold box 1 is divided into a bottom mold 13 and a cover mold 14 along the height of the mold box 1, the length of the bottom mold 13 is greater than the length of the cover mold 14, a protruding plate 131 is formed on the upper side of one end of the bottom mold 13 in a protruding manner, the height of the protruding plate 131 is the same as the height of the cover mold 14, and after the cover mold 14 is placed on the upper side of the bottom mold 13, one end of the cover mold 14 can abut against the protruding plate 131.
Referring to fig. 2 and 3, the contact surface between the bottom mold 13 and the cover mold 14 is a mold clamping surface, a plurality of positioning holes 15 are symmetrically formed on both sides of the mold clamping surface between the bottom mold 13 and the cover mold 14 along the longitudinal direction of the mold clamping surface, and positioning pins 151 can be inserted into the corresponding positioning holes 15 of the bottom mold 13 and the cover mold 14, so that the relative positions of the bottom mold 13 and the cover mold 14 can be limited. In order to fix the cover mold 14 and the bottom mold 13, bolts are vertically penetrated through two sides of the upper surface of the cover mold 14, and the lower ends of the bolts penetrate through the cover mold 14 and are connected to the bottom mold 13 in a threaded manner. When the cover mold 14 and the bottom mold 13 are disassembled, the cover mold 14 can be detached from the bottom mold 13 by removing the bolts.
Referring to fig. 2 and 3, the cavity 3 is formed on the mating surfaces of the bottom mold 13 and the cover mold 14 for forming the outer peripheral surface of the rubber bellows, the cavity 3 is integrally arranged in a long rod shape along the length direction of the mold box 1, the cavity 3 includes a lower cavity formed in the bottom mold 13 and an upper cavity formed in the cover mold 14, the upper cavity and the lower cavity are symmetrically arranged, the injection hole 11 is formed in the axial position of the protruding plate 131 corresponding to the cavity 3, the injection hole 11 penetrates through the protruding plate 131 and forms a flow channel 111 communicating with the cavity 3 on the mating surfaces of the cover mold 14 and the bottom mold 13, and the flow channel 111 communicates with the cavity 3. To facilitate the injection of the syringe, the outer surface of the convex plate 131 is formed with a concave arc 132 corresponding to the position of the injection hole 11, and the injection hole 11 is located at the center of the concave arc 132.
When injecting the rubber stock solution, the injector is abutted against the center of the concave arc 132 of the convex plate 131 to inject the rubber stock solution, and the rubber stock solution enters the flow passage 111 along the injection hole 11 and is refilled into the cavity 3.
Referring to fig. 2 and 3, one end of the cavity 3 close to the convex plate 131 is round, one end of the cavity 3 far from the convex plate 131 is in a reduced circular truncated cone shape with a smaller end diameter, the mold core 2 is coaxially arranged in the cavity 3, the diameter of the mold core 2 is smaller than that of the mold cavity 3, the mold core 2 is mainly used for forming the inner surface shape of a rubber bag, different shapes can be designed according to different requirements, in the embodiment of the application, the shape of the mold core 2 is basically the same as that of the mold cavity 3, a circular groove is formed in the peripheral surface of the reduced end of the mold core 2, and a liquid cavity is formed in a support of the mold core 2 and the mold cavity 3.
Referring to fig. 2 and 3, after the rubber stock solution enters the cavity 3, the rubber stock solution completely fills the liquid cavity when flowing along the space between the cavity 3 and the mold core 2, after the rubber stock solution is solidified, the cover mold 14 is taken down, the rubber bladder wraps the outer peripheral surface of the mold core 2, and then the bladder is taken down from the outer peripheral surface of the mold core 2.
Referring to fig. 2, in order to facilitate the removal of the cover mold 14 from the bottom mold 13, relief grooves 141 are formed on both sides of the lower surface of the cover mold 14, and a user can lift the cover mold 14 from the bottom mold 13 to the upper side of the bottom mold through the relief grooves 141.
Referring to fig. 2 and 3, the overflow holes 12 are located at one end of the mold box 1 corresponding to the necking of the mold cavity 3, one overflow hole 12 may be located in one of the cover mold 14 or the cover mold 14, and the two overflow holes 12 may also be formed, that is, the two overflow holes 12 are located on the side of the bottom mold 13 away from the cover mold 14. Thereby the liquid cavity can be fully filled with the rubber stock solution, the initial rubber stock solution can be extruded from the overflow hole 12, and the molding quality of the rubber bag is ensured.
Referring to fig. 3, in order to support the core 2 in the cavity 3, a support member 4 may be further disposed at one end of the core 2, and the support member 4 may be a stud capable of being in threaded connection with one end of the cavity 3, or a bolt capable of connecting the core 2 with the cavity 3, so that the core 2 can complete a detachable fixing structure in the cavity 3.
In another embodiment of the present application, a further detailed description is given of a support structure:
referring to fig. 4, the support member 4 includes a support pillar 41 and a support plate 42, the support plate 42 is coaxially and integrally formed at one end of the support pillar 41, the diameter of the support plate 42 is larger than that of the support pillar 41, the support member 4 is integrally in a stepped column shape, and the reduced end of the core 2 is coaxially fixed at one end of the support pillar 41 far away from the support plate 42.
Referring to fig. 3 and 4, a slot 16 is formed at a position where the mating surfaces of the bottom mold 13 and the cover mold 14 correspond to the support 4, the shape of the slot 16 is the same as that of the support 4, one end of the slot 16 communicates with the cavity 3, and the other end of the slot 16 extends to an end of the mold box 1 away from the injection hole 11. After the support member 4 is placed in the slot 16, the supporting pillars 41 of the support member 4 can close the connection portion between the mold cavity 3 and the slot 16, and the support member 4 can keep the core 2 coaxially fixed in the mold cavity 3.
Referring to fig. 3 and 4, when the rubber stock solution is injected into the liquid cavity, the supporting piece 4 keeps the position of the mold core 2 in the liquid cavity, the connecting part of the mold cavity 3 and the slot 16 is closed, after the rubber stock solution is solidified, the cover die 14 is detached, the supporting piece 4 is directly taken out from the slot 16, the mold core 2 wrapped with the rubber leather bag can be taken out from the mold cavity 3, and then the rubber leather bag is peeled from the mold core 2.
In addition, because support piece 4 sets up to the solid of revolution of ladder column, therefore place support piece 4 in slot 16 back, support column 41 can be in the internal rotation of slot 16, and rotation support column 41 can drive core 2 and rotate, therefore, in the injection process of carrying out the leather bag, drive core 2 in continuous rotation in die cavity 3 through support piece 4, can strengthen the mobility of rubber stoste in the sap cavity, make the quick abundant packing of rubber stoste, avoid rubber stoste transition thickening, guarantee the degree of consistency of the rubber stoste of rubber injection in-process, furthermore, at the rubber solidification, leather bag shaping back, rotation support piece 4, drive core 2 and rotate, thereby drive the leather bag rotation of shaping in support piece 4 surface in step, thereby be convenient for break away from between leather bag and the die cavity 3.
In addition, in order to close the overflow hole 12 and facilitate the formation of the leather bag, in another embodiment of the present application, a sealing element may be further disposed at the position of the overflow hole 12, the overflow hole 12 can be opened or closed by the sealing element, the sealing element may be a part capable of closing the overflow hole 12, such as a plug, a cover plate, and the like, and the sealing element may be connected to the mold box 1 by bolts, or by threads, or by directly adopting a manner of rotation connection or insertion, and in short, the part capable of opening or closing the overflow hole 12 may be referred to as the sealing element.
In another embodiment of the present application, a detailed description of the structure of the mold box 1 for the overflow hole 12 and the closing member is given:
referring to fig. 5, a containing groove 121 is formed at a position corresponding to the overflow hole 12 outside the mold box 1, the overflow hole 12 is located at an eccentric position of the containing groove 121, the closure includes a rotary plug 5, the whole rotary plug 5 is in a circular truncated cone shape, and the larger end of the rotary plug 5 is the same as the diameter of the containing groove 121, a communication hole 51 is formed at the eccentric position of the rotary plug 5, the communication hole 51 penetrates through the rotary plug 5 along the axial direction of the rotary plug 5, the communication hole 51 extends to the circumferential surface of the rotary plug 5, the rotary plug 5 is disposed in the containing groove 121, and the larger end of the rotary plug abuts against the bottom surface of the containing groove 121, the communication hole 51 is communicated with the overflow hole 12 by rotating the rotary plug 5, so that the raw rubber liquid flowing out of the overflow hole 12 can flow out of the communication hole 51, and the communication hole 51 and the overflow hole 12 are dislocated by rotating the rotary plug 5, and the overflow hole 12 can be sealed by the rotary plug 5.
Referring to fig. 5, a pressing ring 122 is screwed to the outside of the accommodating groove 121, and the inside of the pressing ring 122 can abut against the smaller diameter end of the rotary plug 5. The pressing ring 122 is formed with a discharge port 123 at a position corresponding to the overflow hole 12 so that the rotary plug 5 can be discharged when the communication hole 51 is communicated with the overflow hole 12 and the discharge port 123.
Referring to fig. 5, in order to facilitate the rotation of the rotary plug 5, a non-circular spiral groove 52, such as a cross groove, a straight groove, etc., is formed at an axial position of the outer end of the rotary plug 5. The user can use a tool to pass through the inner hole of the pressing ring 122 and insert into the rotary groove 52, so as to drive the rotary plug 5 to rotate, thereby realizing the opening and closing of the overflow hole 12.
Referring to fig. 5, the rotating plug 5 is in a frustum shape, and the diameter of one end of the rotating plug, which is far away from the overflow hole 12, is smaller, so that waste generated by the rubber stock solution is accumulated in a gap between the rotating plug 5 and the accommodating groove, even if the rubber stock solution is solidified, after the pressing ring 122 is detached, the waste can be conveniently taken out of the accommodating groove 121, and the cleaning is facilitated.
In order to facilitate the separation of the waste material remaining in the overflow hole 12 after the rubber has solidified from the leather bag, a separating member may be provided in the molding box 1 in another embodiment of the present application for separating the waste material from the leather bag, as described in further detail below:
referring to fig. 6 and 7, a conical groove 17 is formed in the position of the mold box 1 corresponding to the necking part of the cavity 3, the separating part is a conical ring 6, the conical ring 6 is rotatably arranged in the conical groove 17, more specifically, the outer peripheral surface of the conical ring 6 abuts against the surface of the conical groove 17, the inner peripheral surface of the conical ring 6 is the same as the outer peripheral surface of the necking part of the leather bag to be manufactured, an annular cutting hole 61 is formed in the position of the conical ring 6 corresponding to the overflow hole 12, the diameter of the annular cutting hole 61 is the same as that of the overflow hole 12, and the conical ring 6 is rotated to drive the annular cutting hole 61 to separate the connecting part of the rubber leather bag in the liquid cavity and the waste in the overflow hole 12, so that the rubber leather bag can be taken out conveniently.
Referring to fig. 8 and 9, in order to realize the rotation that can drive the conical ring 6, in this embodiment, the core 2 and the stepped support 4 adopt a split type movable connection matching structure, that is, a convex column 21 is formed at an axis position of one end of the core 2 close to the support 4, a non-circular limiting block 22 is formed at an outer end of the convex column 21, such as a polygon, an ellipse, and the like, a groove 43 is formed at a position of one end of the support 4 close to the core 2 corresponding to the convex column 21, the convex column 21 can rotate relative to the groove 43, a limiting groove 44 is formed at a bottom surface of the groove 43 corresponding to a position of the limiting block 22, when the limiting block 22 is inserted into the limiting groove 44, the support 4 can drive the core 2 to rotate synchronously, when the support 4 moves in a direction away from the core 2 to separate from the limiting block 22 and the limiting groove 44, the support 4 can rotate relative to the core 2.
Referring to fig. 8 and 9, a limiting ring 62 is formed by protruding one end of the outer peripheral surface of the conical ring 6 close to the supporting member 4, a pull ring 45 capable of being matched with the limiting ring 62 is formed on the outer side of one end of the supporting member 4 close to the core 2 corresponding to the limiting ring 62, a recess convenient for the pull ring 45 to move is formed on the position of the mold box 1 corresponding to the pull ring 45, when the mold box tends to move away from the core 2 to the pull ring 45 abutting against the limiting ring 62, the limiting block 22 is separated from the limiting recess 44, at this time, the supporting member 4 can rotate relative to the core 2, and the limiting ring 62 rotates along with the supporting member 4. In this state, the rotating support member 4 drives the conical ring 6 to rotate through the limiting ring 62, so that the connecting part of the leather bag and the waste material can be cut off.
Referring to fig. 7, specifically, the pull ring 45 includes a first annular portion 451 and a second annular portion 452 that are integrally formed, the first annular portion 451 is coaxially fixed to the supporting member 4, an inner diameter of the first annular portion 451 is not smaller than an outer diameter of the stop collar 62, an axial length of the first annular portion 451 is greater than an axial length of the stop collar 62, and an inner diameter of the second annular portion 452 is smaller than the outer diameter of the stop collar 62, so that when the supporting member 4 moves in a direction away from the mold core 2, the supporting member 4 drives the first annular portion 451 and the second annular portion 452 to move synchronously, and the second annular portion 452 abuts against a side of the stop collar 62 away from the supporting member 4 can be realized.
Further, when being convenient for second annular portion 452 and spacing ring 62 butt, spacing ring 62 can be along with second annular portion 452 synchronous revolution, and a plurality of draw-in grooves and the card is protruding to the side of spacing ring 62 and second annular portion 452 that is close can be along its two axis homogeneous moulding to when spacing ring 62 and second annular portion 452 butt, draw-in groove and the cooperation of card protruding will guarantee spacing ring 62 and the synchronous revolution of second annular portion 452.
In addition, in order to facilitate the installation and the disassembly of the conical ring 6, the annular part formed by the conical ring 6 and the pull ring 45 can be formed by splicing two half rings, so as to facilitate the installation and the disassembly.
Referring to fig. 10, in addition, in order to ensure that the rubber is injected, the limiting groove 44 of the supporting element 4 is inserted into the limiting block 22 of the mold core 2, namely, the supporting element 4 is tightly abutted to the mold core 2, one side of the end of the mold box 1, which corresponds to the insertion hole, is in threaded connection with a pressing bolt 7, the pressing bolt 7 can be arranged in any one of the bottom mold 13 or the cover mold 14, the supporting element 4 is arranged in the insertion groove 16, the head of the pressing bolt 7 can be pressed on the outer end of the supporting element 4 by rotating the pressing bolt 7, further, the movement of the axis direction of the supporting element 4 is limited, the quality of the rubber bladder during injection molding is ensured, after the bladder is molded, the pressing bolt 7 is rotated, the supporting element 4 can be pulled along the axis direction of the supporting element 4, and the conical ring 6 can be driven by the supporting element 4 to synchronously rotate.
The application further provides a leather bag forming method, the leather bag injection mold in the embodiment is adopted, and the method comprises the following steps:
s1, opening an overflow hole of a die box, and injecting heated and melted rubber stock solution into a liquid cavity through an injection hole of the die box;
s2, in the process of injecting the rubber stock solution into the liquid cavity, rotating the mold core to fully fill the rubber stock solution into the liquid cavity;
s3, after the rubber stock solution flows out of the overflow hole and the consistency of the rubber stock solution flowing out of the overflow hole is uniform, closing the overflow hole;
s4, after the stock solution in the liquid cavity is solidified, rotating the mold core to separate the rubber leather bag from the cavity, and opening the mold box to take out the leather bag.
The method of the embodiment achieves the following effects:
when the air bag is formed, the rubber stock solution is pushed into the cavity through the injection hole, then the rubber stock solution gradually flows along the liquid cavity to fully fill the whole liquid cavity, and in the continuous injection process of the rubber stock solution, the rubber stock solution initially injected into the liquid cavity is extruded from the overflow hole, so that on one hand, air in the liquid cavity can be discharged, the rubber stock solution is fully filled in the whole liquid cavity, the wall thickness of the leather bag is ensured to be the same, on the other hand, the rubber stock solution initially extruded into the liquid cavity and with uneven consistency can be discharged from the overflow hole, the consistency of the rubber stock solution in the liquid cavity is ensured to be even, and the formed leather bag product has high quality,
in addition, in the injection process of rubber stoste, continuous rotation core can increase the mobility of stoste in the sap cavity, avoids stoste transition thickening, and the support piece is rotated to the leather bag shaping back, drives the core and rotates to drive the leather bag of shaping in the support piece surface in step and rotate, thereby be convenient for break away from between leather bag and the die cavity.
The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, 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. In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the embodiments of the present invention.
Claims (10)
1. A bladder injection mold, comprising:
the die box comprises a die box (1), wherein a die cavity (3) is formed in the die box (1);
the mold core (2) is fixed on the mold box (1) and positioned in the mold cavity (3), and a liquid cavity is formed between the mold cavity (3) and the mold core (2);
the injection hole (11) is arranged at one end of the die box (1) and is communicated with the die cavity (3); and (c) a second step of,
and the overflow hole (12) is arranged in the die box (1) and is communicated with one end, far away from the injection hole (11), of the die cavity (3).
2. The bladder injection mold of claim 1, wherein: the mould box (1) is provided with a closing piece at the position corresponding to the overflow hole (12), and the closing piece can open or close the overflow hole (12).
3. The bladder injection mold of claim 1, wherein:
a rotary plug (5) is rotatably arranged at the position of the die box (1) corresponding to the overflow hole (12), and a communication hole (51) is formed at the eccentric position of the rotary plug (5);
the rotary plug (5) can close the overflow hole (12) or make the communication hole (51) communicate with the overflow hole (12) by rotating.
4. The bladder injection mold of claim 3, wherein: a containing groove (121) is formed in the position, corresponding to the overflow hole (12), of the die box (1);
the rotating plug (5) is rotatably arranged in the accommodating groove (121);
the outside detachable of storage tank (121) is provided with clamping ring (122), rotatory stopper (5) can be pressed to clamping ring (122), position shaping discharge gate (123) that clamping ring (122) correspond overflow hole (12).
5. The bladder injection mold of claim 4, wherein: the rotary plug (5) is in a frustum shape, and the communication holes extend to the peripheral surface of the rotary plug (5);
the diameter of one end of the rotary plug (5) far away from the overflow hole (12) is smaller than that of the other end.
6. The bladder injection mold of claim 1, wherein: the mold box (1) comprises:
a bottom die (13);
the cover die (14) is detachably arranged on the upper side of the bottom die (13);
the die cavity (3) is formed on the joint surface of the bottom die (13) and the cover die (14).
7. The bladder injection mold of claim 6, wherein: a supporting piece (4) is arranged at one end of the mold core (2), and the supporting piece (4) seals one end, far away from the injection hole (11), of the mold cavity (3);
the supporting piece (4) is detachably arranged between the cover die (14) and the bottom die (13).
8. The bladder injection mold of claim 7, wherein: a slot (16) is formed at one end of the die box (1) far away from the injection hole (11);
the supporting piece (4) is rotatably arranged in the slot (16), and the core (2) can be driven to rotate in the cavity (3) by rotating the supporting piece (4).
9. A method for forming a leather bag is characterized by comprising the following steps:
opening an overflow hole (12) of the die box (1), and injecting the heated and melted rubber stock solution into the liquid cavity through an injection hole (11) of the die box (1);
after the rubber stock solution flows out of the overflow hole (12) and the consistency of the rubber stock solution flowing out of the overflow hole (12) is uniform, the overflow hole (12) is closed;
after the stock solution in the liquid cavity is solidified, the mould box (1) is opened and the leather bag is taken out.
10. The method of forming a bladder of claim 9 wherein:
in the process of injecting the rubber stock solution into the liquid cavity, the mold core (2) is rotated to fully fill the rubber stock solution into the liquid cavity;
after the rubber bag is solidified and formed, the mold core (2) is rotated to separate the rubber bag from the mold cavity (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210796121.6A CN115195038A (en) | 2022-07-07 | 2022-07-07 | Leather bag injection mould and leather bag forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210796121.6A CN115195038A (en) | 2022-07-07 | 2022-07-07 | Leather bag injection mould and leather bag forming method |
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| Publication Number | Publication Date |
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| CN115195038A true CN115195038A (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210796121.6A Pending CN115195038A (en) | 2022-07-07 | 2022-07-07 | Leather bag injection mould and leather bag forming method |
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| US20210260810A1 (en) * | 2018-06-27 | 2021-08-26 | Resilux N.V. | Preform and container adapted for accommodating an insert piece, with methods and apparatus for their production |
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| CN102802917A (en) * | 2009-06-27 | 2012-11-28 | 内兹塔尔机械公司 | Method and device for producing preforms with special geometries |
| CN103118852A (en) * | 2010-07-16 | 2013-05-22 | Sio2医药产品公司 | Injection molding process and product produced using the same |
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