CN113146887A

CN113146887A - Cover body forming die and quick-change structure

Info

Publication number: CN113146887A
Application number: CN202110320980.3A
Authority: CN
Inventors: 孙恺; 李米希; 何善赟; 任嘉军
Original assignee: Zhejiang Otor Container Technology Co ltd
Current assignee: Zhejiang Otor Container Technology Co ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-07-23

Abstract

The invention discloses a cover body forming die and a quick-change structure, the cover body forming die comprises an upper die, a die cavity unit and a quick-change structure, wherein the die cavity unit is arranged on the upper die, the die cavity unit forms a molded surface and is used for forming a cover body corresponding to the molded surface in a hot forming mode, the die cavity unit is arranged on the upper die in a manner of at least partially replacing through the quick-change structure, the die cavity unit comprises a peripheral die and a middle core part, and the peripheral die is used for forming the peripheral part of the cover body; the middle core part is used for molding the central part of the cover body, and the middle core part is arranged on the inner side of the peripheral die in a replaceable manner through the quick-change structure so as to be convenient for replacing the middle core part quickly and conveniently.

Description

Cover body forming die and quick-change structure

Technical Field

The invention relates to the field of forming dies, in particular to a cover body forming die and a quick-change structure.

Background

Along with the convenience of outgoing consumption of people, various beverage shops such as coffee shops, milky tea shops, juice shops stand. These commercial stores are dominated by the provision of a variety of ready-to-serve beverages, including hot and cold beverages, and are typically provided in disposable plastic cups or cups that are closed over their mouths for convenient packaging and carrying.

For different types of beverages, it may be necessary to fit different lids to suit different needs. For example, for a milk tea cup, the cup cover needs to be provided with interfaces in different sizes and shapes, or for cups of different brands, the cup cover needs to be provided with different identification patterns or patterns, and the interfaces or the identifications are mainly arranged in the central area of the cup cover, that is, the peripheral structures of various types of cup covers are consistent, but the central areas are different.

Referring to fig. 1, for the requirement of such differentiation, one of the existing manufacturing methods is to divide the manufacturing mold of the cup cover into two parts, i.e. a method of sleeve mold production. One of the parts of the mould is an outer part 1P and the other part is a central part 2P, the central part 2P being fixed in the outer part by screws 3P. When different types of products need to be produced, the central parts 2P need to be disassembled one by one. Because central part 2P is fixed through a plurality of screws 3P, consequently the benevolence process needs the quick-witted dismouting cope match-plate pattern of removing, the fixed screw 3P of elasticity middle benevolence in the dismouting. The whole replacing process has more working procedures, long die replacing time and low die replacing efficiency, and frequent disassembly and assembly affect the service life of the die.

Disclosure of Invention

An object of the present invention is to provide a cover forming mold and a quick-change structure that can quickly change a middle core part without disassembling and assembling screws, compared to a method of changing a middle core part fixed by screws.

An object of the present invention is to provide a cover forming mold and a quick-change structure which do not require disassembly of a main body portion of an upper mold to replace a center core part, that is, which can be replaced on-line, thereby reducing frequent disassembly and assembly processes of a mold plate main body.

Another object of the present invention is to provide a cover molding die and a quick-change structure, which can change the middle core part by simple operations of inserting, pulling and moving, without requiring a complicated tool operation process, and with simple and convenient operation.

Another object of the present invention is to provide a cover forming mold and a quick-change structure, which can continuously and quickly change the middle core parts of a plurality of cavity units, thereby shortening the mold changing time and improving the working efficiency.

Another object of the present invention is to provide a cover forming mold and a quick-change structure, which control the fixing or releasing of the core parts by moving the insert, and when releasing, the core parts can be automatically released one by one.

Another object of the present invention is to provide a cover forming mold and quick-change structure, which can be fixed or separated by the engagement of the slip and the dislocation structure of the middle core part.

Another object of the present invention is to provide a cover forming mold and a quick-change structure, which provides an auxiliary fixture, through which the middle core component is preloaded, so as to load the middle core component quickly and in batch.

Another object of the present invention is to provide a cover forming mold and a quick-change structure, which can accommodate the interchange of different types of products, and meet the customized requirements.

Another object of the present invention is to provide a cover forming mold and a quick-change structure, wherein the forming mold is provided with a plurality of exhaust passages, and one of the exhaust passages communicates the outer peripheral mold and the center of the center-dividing part to the outer space.

Another object of the present invention is to provide a cover forming mold and a quick-change structure, wherein the forming mold is provided with a plurality of air discharge channels, and one air discharge channel is located at the periphery of the middle core part and is communicated from the center to the outside.

Another object of the present invention is to provide a cover forming mold and a quick-change structure, wherein the forming mold is provided with multiple cooling water paths, and the multiple cooling water paths are respectively arranged around the upper portion of the cavity of the forming mold, so as to cool different positions of the cavity as a whole, and thus the cooling is more uniform.

One aspect of the present invention provides a cover forming mold, which includes:

an upper die;

a cavity unit provided with the upper mold, the cavity unit forming a mold surface for forming a cap body corresponding to the mold surface by means of thermoforming, and

a quick-change arrangement by which the mould cavity unit is at least partly replaceably arranged to the upper mould, wherein the mould cavity unit comprises:

an outer peripheral die for molding an outer peripheral portion of the lid body; and

and the middle core part is used for forming the central part of the cover body, and the middle core part is replaceably arranged inside the outer peripheral die through the quick-change structure.

The cover forming mold according to an embodiment, wherein the quick-change structure is selectively provided to the upper mold and the center core part so as to quickly replace the center core part by the quick-change structure.

The cover forming mold according to an embodiment, wherein the quick-change structure has a snap-fit state in which the center core member is fixed to the outer peripheral mold and a misalignment state in which the center core member is adapted to be detached from the outer peripheral mold.

The cover molding die according to one embodiment, wherein the quick-change structure includes a movable plunger movably provided to the upper die and a snap assembly selectively provided to the movable plunger and the center core member.

The cover forming mold according to one embodiment, wherein the snap members have a snap state and a separated state, the snap members snap to each other when the quick-change structure is in the snap-fit state, and the snap members are separated from each other when the quick-change structure is in the dislocated state.

The cover molding die according to one embodiment, wherein the buckle assembly includes a hook provided to the middle core member and a catch provided to the movable insert.

The cover forming die according to one embodiment, wherein the upper die is provided with a moving slot in which the movable insert is movably disposed and an offset slot into which the latch assembly extends.

According to an embodiment, the cover body forming mold is characterized in that the hook protruding out of the middle core part extends to the dislocation groove, two sides of the hook and the side wall of the dislocation groove form two dislocation spaces, and when the movable inserting strip moves leftwards or rightwards, the buckle moves into the dislocation space on the left side or the right side.

The cover forming mold according to one embodiment, wherein the movable insert includes an operating member detachably connected to the moving member and a moving member located inside the upper mold, the operating member extending outside the upper mold.

A cover forming mold according to an embodiment, wherein the operating member has a stopper protrusion and an operating head, the operating head is located at an end portion of the operating member, the stopper protrusion is located inside the operating head, and the stopper protrusion restricts movement of the operating member to the inside of the upper mold.

According to an embodiment, when the operating member is inwardly moved and limited by the limiting protrusion, the fastener is moved into the hook.

According to an embodiment, when the operating member moves outward and the moving member is restricted by the moving groove, the latch moves to disengage from the hook.

The cover body forming mold according to an embodiment, wherein the quick-change structure includes a plurality of the fasteners and the hooks, the plurality of the fasteners are respectively disposed at intervals on the movable insert, and the plurality of the hooks are respectively disposed on the plurality of the middle core components.

The cover forming mold according to an embodiment, wherein the cover forming mold includes a plurality of the cavity units, and the cavity units are arranged on the upper mold in an array arrangement.

According to an embodiment, the cover forming mold is provided with a first air path and a second air path, the first air path communicates with the outer peripheral mold and the middle core component, and exhaust positions of the first air path and the second air path respectively correspond to an outer peripheral portion and a central portion of the cover.

According to an embodiment, the cover forming mold is provided with a first water channel and a second water channel, and the first water channel and the second water channel respectively surround the inner part of the outer peripheral mold.

Another aspect of the present invention provides a quick-change structure adapted to be applied to a cap body molding die including an upper die including a plurality of cavity units, the outer peripheral die being for molding an outer peripheral portion of the cap body, the center core part being for molding a central portion of the cap body, the center core part being replaceably disposed inside the outer peripheral die by the quick-change structure, characterized in that the quick-change structure includes a movable insert strip movably disposed on the upper die and a buckle assembly selectively disposed on the movable insert strip and the center core part, the movable insert strip being movable to control the buckle and the release of the buckle assembly.

The quick-change structure according to an embodiment, wherein the buckle assembly includes a hook and a catch, the hook is disposed on the middle core part, and the catch is disposed on the movable slip.

The quick-change structure according to one embodiment, wherein the upper die is provided with a moving slot in which the movable insert is movably disposed and an offset slot into which the buckle assembly extends.

According to an embodiment, the quick-change structure comprises a clamping hook, a clamping groove and a clamping buckle, wherein the clamping hook protrudes out of the middle core part, the clamping hook extends to the dislocation groove, two sides of the clamping hook and the side wall of the dislocation groove form two dislocation spaces, and when the movable inserting strip moves leftwards or rightwards, the clamping buckle moves into the dislocation space on the left side or the right side.

The quick-change structure according to one embodiment, wherein the movable plunger comprises an operating part detachably connected to the moving part and a moving part inside the upper die, the operating part extending outside the upper die.

The quick-change structure according to an embodiment, wherein the operating member has a limiting projection and an operating head, the operating head is located at an end of the operating member, the limiting projection is located inside the operating head, and the limiting projection limits movement of the operating member to the inside of the upper die.

According to an embodiment, when the operating part is limited by the limiting protrusion, the buckle moves into the hook.

According to an embodiment, when the operating member moves outward and the moving member is stopped by the moving groove, the snap is moved to be disengaged from the snap hook.

The quick-change structure according to an embodiment comprises a plurality of buckles and the hooks, the buckles are respectively arranged on the movable insert at intervals, and the hooks are respectively arranged on the middle core parts.

Drawings

Fig. 1 is a partial schematic view of a prior art forming die.

Fig. 2A is a schematic view of a cover molding die in a clamped state according to an embodiment of the present invention.

Fig. 2B is a schematic diagram illustrating an opened state of the cover forming mold according to the above embodiment of the invention.

Fig. 2C is a partially enlarged view of the inside of the position a of fig. 2A for explaining the internal structure of the cavity and the cavity unit.

Fig. 3 is a schematic view of the lid manufactured by using the lid forming mold of the above embodiment.

Fig. 4 is a schematic view of the cavity unit of the cover forming mold according to the above embodiment of the present invention in a fastened state, wherein the core member is in a fixed state.

Fig. 5 is a cross-sectional view showing a state where the cavity unit of the cap forming mold is displaced according to the above embodiment of the present invention, and the core member is in a detachable state.

Fig. 6 is a schematic view showing the center core part of the cover forming mold according to the above embodiment of the present invention detached.

Fig. 7A to 7C are schematic diagrams illustrating a detachment process of a cavity unit of the cap forming module according to the above embodiment of the present invention.

Fig. 8A and 8B are partial schematic views of the cover forming mold according to the above embodiment of the present invention, illustrating the air vent passage.

Fig. 8C is a partially enlarged schematic view of fig. 8B.

Fig. 9 is an overall cross-sectional view of the cover molding die according to the above embodiment of the present invention, illustrating a cooling water path.

Fig. 10 is a partial sectional view of the upper mold of the cover molding mold according to the above embodiment of the present invention, illustrating the cooling water path.

Fig. 11 is a cross-sectional view of the cavity unit of the cap forming mold according to the above embodiment of the present invention, illustrating the cooling water path.

Fig. 12 is a schematic plan view of the cavity unit of the cap molding die according to the above embodiment of the present invention, illustrating the cooling water path.

Fig. 13 is a schematic view of an auxiliary fixture of the cover forming mold according to the above embodiment of the invention.

Fig. 14 is a schematic view of another auxiliary fixture of the cover forming mold according to the above embodiment of the invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

References to "one embodiment," "an embodiment," "example embodiment," "various embodiments," "some embodiments," etc., indicate that the embodiment described herein may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the feature, structure, or characteristic. In addition, some embodiments may have some, all, or none of the features described for other embodiments.

Fig. 2A is a schematic view of a cover molding die in a clamped state according to an embodiment of the present invention. Fig. 2B is a schematic diagram illustrating an opened state of the cover forming mold according to the above embodiment of the invention. Fig. 2C is a partially enlarged view of the inside of the position a of fig. 2A for explaining the internal structure of the cavity and the cavity unit. Fig. 3 is a schematic view of the lid manufactured by using the lid forming mold of the above embodiment. Fig. 4 is a schematic view of the cavity unit of the cover forming mold according to the above embodiment of the present invention in a fastened state, wherein the core member is in a fixed state. Fig. 5 is a cross-sectional view showing a state where the cavity unit of the cap forming mold is displaced according to the above embodiment of the present invention, and the core member is in a detachable state. Fig. 6 is a schematic view showing the center core part of the cover forming mold according to the above embodiment of the present invention detached. Fig. 7A to 7C are schematic diagrams illustrating a detachment process of a cavity unit of the cap forming module according to the above embodiment of the present invention. Fig. 8A and 8B are partial schematic views of the cover forming mold according to the above embodiment of the present invention, illustrating the air vent passage. Fig. 8C is a partially enlarged schematic view of fig. 8B. Fig. 9 is an overall cross-sectional view of the cover molding die according to the above embodiment of the present invention, illustrating a cooling water path. Fig. 10 is a partial sectional view of the cover molding die according to the above embodiment of the present invention, illustrating the cooling water path. Fig. 11 is a schematic sectional side view of the cavity of the cover forming mold according to the above embodiment of the present invention, illustrating the cooling water path. Fig. 12 is a schematic sectional top view of the cavity of the cover molding die according to the above embodiment of the present invention, illustrating the cooling water path. Fig. 13 is a schematic view of an auxiliary fixture of the cover forming mold according to the above embodiment of the invention. Fig. 14 is a schematic view of another auxiliary fixture of the cover forming mold according to the above embodiment of the invention.

Referring to fig. 2 to 14, the present invention provides a cover forming mold 100, wherein the cover forming mold 100 is used for manufacturing a cover 200 by thermoforming, and the cover 200 is not limited to a cup cover, a bowl cover, and other covers capable of covering various container bodies. The cover 200 includes a central portion 201 and a peripheral side portion 202, the peripheral side portion 202 surrounding the central portion 201, the peripheral side portion 202 being adapted to be connected to the cover to the container body.

The cover forming mold 100 includes an upper mold 11 and a lower mold 12, and the upper mold 11 and the lower mold 12 cooperate with each other to thermally form the cover 200. The lid body forming mold 100 has an open state in which the upper mold 11 and the lower mold 12 are separated from each other and adapted to place a work sheet between the upper mold 11 and the lower mold 12 to form the lid body 200 from the sheet, and a closed state in which the upper mold 11 and the lower mold 12 are combined close to each other and the sheet is thermoformed by the upper mold 11 and/or the lower mold 12 to form the lid body 200 in a predetermined shape during the closing. In the mold-closed state, at least one cavity 101 is formed between the upper mold 11 and the lower mold 12, and the cavity 101 is used for molding the lid body 200 having a predetermined shape.

The cover forming mold 100 includes at least one mold cavity unit 14, the mold cavity unit 14 has a mold surface 140 for forming the cover 200, and the mold cavity unit 14 is disposed on the upper mold 11 to drive the mold cavity unit 14 and the lower mold 12 to be closed by the movement of the upper mold 11. Further, the cap forming mold 100 includes a plurality of cavity units 14, and the cavity units 14 are arranged on the upper mold 11 in an array manner, so as to form a plurality of caps 200 at a time. That is, one of the cavity units 14 is formed to correspond to one of the caps 200. In other embodiments of the present invention, the cavity unit 14 may also be disposed on the lower mold 12, and the present invention is not limited in this respect.

For example, in the molding process, the thermoplastic sheet is heated to a softened state, and is tightly adhered to the molding surface of the cavity unit 14 by the external force of the upper mold 11 and the lower mold 12 to obtain a shape similar to the shape 140 of the cavity unit 14, and after cooling and shaping, the lid body 200 with a predetermined shape is obtained by correction. That is, the mold surface formed by the cavity unit forms a cover body corresponding to the mold surface by means of thermoforming.

The lower mold 12 is provided with a plurality of lower mold cavities 1201, and the lower mold cavities 1201 are matched with the mold cavity unit 14 to form the mold cavity 101. Further, in the mold clamping state, the cavity unit 14 extends into the lower mold cavity 1201 to form the cavity 101.

Referring to FIG. 4, for example, but not limiting, the cavity units 14 are arranged in an array of M rows and N columns, i.e., M N arrays, M and N may be the same or different, M ≧ 1, and N ≧ 1. For example, M can be 1-10 and N can be 1-10. That is, a set of the cover body forming molds 100 can form 1 to 100 cover bodies 200 in a one-step forming process, i.e., one-step mass manufacturing and forming can be realized. Of course, in other embodiments of the present invention, the number of the caps 200 formed by the cap forming mold 100 at one time may be more, such as more than 100. The arrangement of the cavity units 14 may be other arrangements, such as a predetermined position layout, and is not limited to a line-to-line arrangement. Preferably, the cavity units 14 of the cap forming mold 100 are arranged in a row-column array, M is preferably 5 or 6, and N is preferably 5 or 6, in combination with the influence factors of production efficiency, convenience in operation of the cap forming mold 100, easiness in manufacturing the forming mold 100, and forming accuracy.

Referring to fig. 2A and 2B, the cover forming mold 100 includes a movement control mechanism 13, and the upper mold 11 is movably connected to the lower mold 12 through the movement control mechanism 13, that is, when the cover 200 is formed, the movement control mechanism 13 is controlled to drive the upper mold 11 to move, so as to form the cover 200. The movement control mechanism 13 is exemplified by, but not limited to, a hydraulic drive control mechanism, an electric control mechanism, or a mechanical control mechanism.

At the time of molding, the work sheet is disposed between the upper mold 11 and the lower mold 12, the upper mold 11 is moved in a direction to approach the lower mold 12, and a predetermined position of the work sheet is thermoformed, thereby forming the lid body 200. That is, the upper mold 11 is driven to move, and the lower mold 12 is in a relatively stationary state. Of course, the upper mold 11 and the lower mold 12 may also be moved in other manners, for example, the upper mold 11 and the lower mold 12 are moved toward each other, and the invention is not limited in this respect.

The cavity unit 14 includes an outer peripheral mold 141 for molding the outer peripheral portion 202 of the cap 200 and a middle core member 142 for molding the central portion 201 of the cap 200. The middle core part 142 is positioned inside the outer circumferential mold 141. That is, the core part 142 and the outer circumferential mold 141 cooperatively form the cap body 200.

The core part 142 is detachably disposed inside the outer circumferential mold 141 so as to be easily exchanged with a different core part 142, i.e., a different structure, shape or pattern is formed at the central portion 201 of the cover body 200 at the time of molding. In one embodiment of the present invention, the cavity unit 14 includes a plurality of the middle core parts 142, and the plurality of the middle core parts 142 respectively correspond to different types of cap 200 products. In other words, when different types of products of the cap body 200 are required to be produced, only the central core part 142 needs to be replaced, and the outer peripheral mold 141 does not need to be replaced.

The cover forming mold 100 includes a quick-change structure 15, and the quick-change structure 15 is selectively disposed on the upper mold 11 and the middle core part 142, so as to rapidly replace the middle core part 142 by the quick-change structure 15.

It is worth noting that, according to the embodiment of the present invention, the center core part 142 is replaceably connected to the outer peripheral mold 141 through the quick-change structure 15, and by the connection manner of the quick-change structure 15, the center core part 142 is fixed to the outer peripheral mold 141 without screws, that is, the center core part 142 can be mounted or dismounted without separating the outer peripheral mold 141 from the upper mold 11, that is, online replacement mounting is realized. In other words, the upper mold 11 and the lower mold 12 can be continuously located in the working line or working position, and when the middle core part 142 needs to be replaced, the upper mold 11 and the lower mold 12 are opened, i.e. separated from each other, and the quick-change structure 15 is operated, so that the middle core part 142 can be detached and installed. In the conventional screw fixing mode, the whole die cavity unit 14 needs to be separated from the upper die 11, so that the upper die 11 needs to be moved to a position convenient for operation, then the whole die cavity unit 14 is separated from the upper die 11, then the middle core is separated for replacement, and after the replacement is finished, the upper die 11 is moved to the original production line or the forming position, so that the whole operation process is relatively complicated and the time consumption is relatively long.

The quick-change structure 15 has a snap-fit state 1502 and a misalignment state 1501, in the snap-fit state 1502, the middle core part 142 is fixed to the outer peripheral mold 141, that is, in the snap-fit state 1502, the relative positions of the middle core part 142 and the outer peripheral mold 141 are determined. The cover 200 can be cooperatively molded. In the dislocated state 1501, the center core part 142 is adapted to automatically disengage from the outer peripheral mold 141, i.e., in the dislocated state 1501, the center core part 142 can be replaced.

The quick-change structure 15 includes a movable insert 151 and a snap assembly 152, the movable insert 151 is movably disposed on the upper mold 11, and the snap assembly 152 is selectively disposed on the movable insert 151 and the middle core part 142. The snap assemblies 152 have a snap state and a disengaged state, the snap assemblies 152 snap together when the quick-change mechanism 15 is in the snap-fit state, and the snap assemblies 152 disengage when the quick-change mechanism 15 is in the misaligned state 1501.

Further, the movable insert 151 controls the latching or releasing of the latch assembly 152.

The buckle assembly 152 includes a hook 1522 and a buckle 1521. in one embodiment of the invention, the hook 1522 is disposed on the middle core component 142, and the buckle 1521 is disposed on the movable plug strip 151. When the movable insert 151 is moved horizontally, the engagement or disengagement of the hook 1522 and the buckle 1521 is controlled.

It should also be noted that, in the embodiment of the present invention, the quick-change structure 15 is disposed on the back side of the middle core part 142, so that the forming surface of the middle core part 142 is not affected, and the quick-change structure can adapt to the interchange of different types of products to meet the customized requirements.

In one embodiment of the present invention, the hook 1522 is fixedly connected to the middle core component 142, for example, but not limited to, the buckle 1521 is integrally connected to the middle core component 142, i.e., the hook 1522 is an integral part of the middle core component 142, and in another embodiment of the present invention, the hook 1522 is detachably connected to the middle core component 142, for example, by being fixed to the middle core component 142 by a screw, which is not limited in this respect.

In one embodiment of the present invention, the clip 1521 is fixedly connected to the movable slip 151, for example, but not limited to, the clip 1521 is integrally connected to the movable slip 151. In another embodiment of the present invention, the buckle 1521 is detachably connected to the movable insert 151, for example, detachably fixed to the movable insert 151 by a screw. The invention is not limited in this respect.

The upper mold 11 is provided with a moving slot 1102 and a displacement slot 1101, the movable insert 151 is movably disposed in the moving slot 1102, and the hook 1522 and the buckle 1521 extend into the displacement slot 1101. The hook 1522 protruding out of the middle core part 142 extends to the offset groove 1101, two offset spaces 1103 are formed on two sides of the hook and the side wall of the offset groove of the upper die, and when the movable insert 151 moves leftwards or rightwards, the buckle 1521 protruding out of the movable insert 151 moves into the offset space 1103 on the left side or the right side.

The quick-change structure 15 includes a fixing seat 153, the hook 1522 is disposed on the fixing seat 153, and the fixing seat 153 is connected to the middle core part 142, that is, the hook 1522 is connected to the middle core part 142 through the fixing seat 153. In one embodiment of the present invention, the fixing base 153 may be screwed to the middle core part 142, and in another embodiment of the present invention, the fixing base 153 is integrally fixed to the middle core part 142.

The movable insert 151 includes an operating member 1511 and a moving member 1512, the operating member 1511 is detachably connected to the moving member 1512, the moving member is located in the upper mold 11, the operating member 1511 extends outside the upper mold 11, and the moving member 1512 is generally operated and moved outside the upper mold 11. By way of example but not limitation, the operating member 1511 is threadably connected to the moving member 1512. For example, in one embodiment of the present invention, the end of the moving member 1512 has a transversely extending internally threaded hole, the outer surface of one end of the moving member 1512 has external threads, and the threaded end of the moving member 1512 is threadedly connected to the threaded hole of the moving member 1512. The operating part 1511 extends and protrudes out of the upper die 11.

In one embodiment of the present invention, the quick-change structure 15 comprises two movable inserts 151, and the two movable inserts 151 are respectively disposed in the upper mold 11, that is, can be moved by operation on either side of the two ends of the upper mold 11. In other words, the moving operation or the replacement of the core part 142 can be performed at both end positions of the cover forming mold 100.

Further, the operation member 1511 has an operation head 15111, and the operation head 15111 is provided at an end portion of the operation member 1511 to facilitate a holding operation. The operation member 1511 has a limit protrusion 15112, the limit protrusion 15112 limits the movement of the operation member 1511 to the inner side of the upper mold 11, the limit protrusion 15112 is located at a predetermined distance position inside the operation head 15111, the limit protrusion 15112 is located at the outer side of the upper mold, that is, when the operation member 1511 is operated to push the moving member 1512 inward, the limit protrusion 15112 limits the moving range of the movable insert 151.

The limit position of the limit protrusion 15112 is matched with the dislocation position of the dislocation groove 1101. For example, in one embodiment, when the operation member 1511 moves inward and moves to the limiting protrusion 15112, that is, the operation member 1511 is blocked by the limiting protrusion 15112 and cannot move further, the buckle 1521 is moved into the hook 1522, that is, the buckle 1521 and the hook 1522 are combined with each other, the middle core member 142 is limited by the hook 1522 in the vertical direction, and the quick-change structure 15 is in the buckling state 1502, so that the middle core member 142 is held in the outer peripheral mold 141. When the operation member 1511 is pulled out, and the moving member 1512 of the movable insert 151 is limited at the end of the moving groove 1102, the buckle 1521 is moved to the misalignment space, that is, the hook 1522 and the buckle 1521 are disengaged from each other, and at this time, the middle core member 142 can be disengaged from the outer peripheral mold 141. In an embodiment of the present invention, when the quick-change mechanism 15 is in the dislocated state 1501, the center core part 142 is automatically separated from the outer peripheral mold 141 under the action of gravity, that is, the center core part 142 can be separated without any pulling operation.

When the operation member 1511 moves inwards and is limited by the limiting protrusion 15112, the buckle 1521 moves into the hook 1522; when the operation member 1511 moves outward, and the moving member 1512 inside is limited by the moving groove 1102, the buckle 1521 moves to disengage from the hook 1522.

It should be noted that in the conventional screw fixing mode, the middle core part 142 must be separated by a screwdriver or other tools, but in the embodiment of the present invention, the middle core part can be replaced by a simple insertion or pushing, pulling or pulling operation, without a complicated operation process of the tools, so that the operation is simple and convenient, and the working efficiency is greatly improved.

Further, in an embodiment of the present invention, the quick-change structure 15 includes a plurality of buckles 1521 and hooks 1522, the plurality of buckles 1521 are respectively disposed at intervals on the moving part 1512 of the movable plug strip 151, and a plurality of hooks 1522 are respectively disposed on the plurality of middle core parts 142, so that the combination or the separation of the middle core parts 142 and the outer circumferential mold 141 is controlled by the cooperation of the plurality of buckles 1521 and the plurality of hooks 1522.

Referring to fig. 6, in the process of gradually moving the movable insert 151 outward, when the movable insert 151 is moved to be drawn out to the bottom, that is, when the quick-change structure 15 is in the misaligned state 1501, the core members 142 in the same row drop downward one by one to be separated from the outer peripheral mold 141, that is, from the upper mold 11. When it is required to install the center core parts 142, a plurality of center core parts 142 are respectively inserted into the outer peripheral molds 141 of the cavity unit 14, and then the movable insert 151 is moved inward to a position where the position-limiting protrusion 15112 is limited, at this time, the quick-change structure 15 is in the snap-fit state 1502, and a plurality of center core parts 142 are simultaneously fixed in a plurality of outer peripheral molds 141, thereby achieving a plurality of replacement work of the center core parts 142. That is, in the embodiment of the present invention, the core parts 142 of the plurality of cavity units 14 can be replaced continuously and rapidly, so that the mold replacing time is shortened, and the working efficiency is improved.

Further, a plurality of the buckles 1521 are disposed on the movable insert in a non-equidistant manner. For example, the indirect distance between the adjacent buckles 1521 gradually increases from the inner end to the outer end of the movable insert 151, so that the plurality of middle core parts 142 gradually separate from the outer circumferential mold in sequence during the outward gradual movement of the movable insert 151. In other words, the number of the middle core parts 142 that need to be disengaged can be controlled by controlling the withdrawn position of the movable insert 151 during the replacement process.

Referring to fig. 8A-8C, the molding die is provided with a plurality of air passage channels 1103 including a first air passage 11031 and a second air passage 11032, wherein the first air passage 11031 communicates the centers of the outer peripheral die 141 and the center core part 142 to the outside, so that when the dies are closed, the internal air is discharged from the outside of the outer peripheral die 141 to the center core part 142 through the first air passage 11031 and is discharged from the center position of the center core part 142.

The outer peripheral mold 141 has an outer hole 14101, the outer hole 14101 communicates with the inner and outer spaces of the outer peripheral mold 141, the outer peripheral mold 141 has a communication passage 14102, and the communication passage 14102 communicates with the outer hole 14101. The middle core part 142 has a central hole 14201, and the central hole 14201 is communicated with the communication channel 14102 of the outer peripheral die 141. The outer hole 14101, the communication passage 14102, and the center hole 14201 communicate to form the first gas path 11031.

An exhaust gap 1401 is arranged between the outer side surface of the middle core part 142 and the outer peripheral die 141, and the exhaust gap 1401 is communicated with the central hole 14201 to form the second air passage 11032.

The second air path 11032 and the second air path 11032 are exhausted at positions corresponding to the outer peripheral portion 202 and the central portion 201 of the cap 200, respectively.

It is worth mentioning that, during the molding process of the lid body 200, the gas enclosed inside the molding die needs to be exhausted, and the deformed positions, such as the outer edge corner position of the outer peripheral portion 202 and the connecting deformed position of the central member and the outer peripheral portion 202, are the corner positions of the die, so that the gas is easy to concentrate and remain, and if the gas remains too much, the molded shape is affected, such as uneven deformation, therefore, in the embodiment of the present invention, the exhaust channel is provided at the position where deformation is needed, so that the gas at the gas concentration position can be exhausted rapidly, thereby ensuring the integrally molded shape of the lid body 200.

Referring to fig. 9-12, the cover forming mold 100 is provided with a plurality of water channels 1104, and the water channels 1104 are used for introducing cooling liquid to facilitate cooling forming, such as cooling water, during the forming process.

Further, the upper mold 11 of the cover forming mold 100 is provided with two water passages 1104, including a first water passage 11041 and a second water passage 11042, wherein the first water passage 11041 and the second water passage 11042 are respectively located inside the peripheral mold 141, and the first water passage 11041 and the second water passage 11042 respectively surround the inside of the peripheral mold 141. Further, the second waterway 11042 is located at a position outside the second waterway 11042.

The top surface of the outer peripheral die 141 is provided with a water inlet and a water outlet, a first inner channel 14103 and a second inner channel 14104 are respectively arranged inside the outer peripheral die 141, and the first inner channel 14103 is communicated with the water inlet 14105 and the water outlet 14106 to form a first waterway 11041. The second inner channel 14104 is communicated with the water inlet 14105 and the water outlet 14106 to form the second waterway 11042. The first inner channel 14103 surrounds the second inner channel 14104.

During the molding process, cooling liquid, such as cooling water, enters from the water inlet, and enters into the first inner channel 14103 and the second outer channel respectively, and then flows out from the water outlet respectively, so as to cool the whole cavity 101 of the molding die at different positions.

The multiple cooling water paths are respectively arranged on the upper portion of the cavity 101 of the upper die in a surrounding mode, so that the different positions of the cavity 101 are integrally cooled, and cooling is more uniform.

Fig. 13 is a schematic view of an auxiliary fixture of the cover forming mold 100 according to the first embodiment of the invention.

Fig. 14 is a schematic view of mass replacement of the cover forming mold 100 according to the first embodiment of the present invention.

According to this embodiment of the present invention, the present invention provides an auxiliary fixture 300, wherein the auxiliary fixture 300 is used for presetting a plurality of the middle core parts 142. The auxiliary fixture 300 includes a fixture body and has a plurality of receiving grooves 301, and the positions of the receiving grooves 301 are matched with the positions of the cavity units 14. For example, the receiving grooves 301 are located on the same straight line, that is, the receiving grooves 301 are matched with the cavity units 14 located in the same row.

The fixing seat 153 and the hook 1522 protrude out of the jig main body, so that when the auxiliary jig is close to the upper die, the fixing seat 153 and the hook 1522 are inserted into the outer peripheral die 141. After a plurality of the middle core parts 142 are inserted into a plurality of the outer circumferential molds 141, the movable insertion pieces 151 are moved inward, thereby locking a plurality of the middle core parts 142, further. The auxiliary fixture 300 is separated from the plurality of middle core parts 142.

In an embodiment of the present invention, the auxiliary fixture 300 has a positioning mark, and the positioning mark is used for determining a position of the middle core part 142, so as to arrange the middle core part 142 in the auxiliary fixture according to a predetermined orientation, that is, to enable the orientation of the buckle 1521 and the orientation of the buckle 1521 to be matched, so as to facilitate combination.

It should be noted that, in the actual operation process, the middle core part 142 to be replaced may be preset in the auxiliary fixture 300, and then the plurality of middle core parts 142 are installed in the plurality of outer peripheral molds 141 at one time, so that the waiting time for the middle replacement may be reduced. That is, the middle core part 142 is preloaded by the auxiliary jig 300, so that the middle core part 142 is loaded in a rapid and batch manner.

In another embodiment of the present invention, the plurality of receiving grooves 301 of the auxiliary fixture 300, the receiving grooves 301 correspond to an array layout of the cavity unit 14 of the upper mold 11, that is, the plurality of receiving grooves 301 are arranged in an array, for example, but not limited to, the array layout is arranged in M rows and N columns, that is, M × N arrays, M and N may be the same or different, M is greater than or equal to 1, and N is greater than or equal to 1, so that the replacement of the whole version of the middle core component 142 can be realized. In other embodiments of the present invention, the plurality of accommodating grooves 301 may be arranged in other manners, which is not limited in this respect.

Similarly, when the middle core part 142 is disassembled, the auxiliary fixture 301 may be disposed below the upper mold 11, and the position of the receiving groove 301 corresponds to the position of the cavity unit 14, and the movable insert 151 is further operated, so that the middle core parts 142 are separated from the outer peripheral mold 141 and enter the receiving groove 301 of the auxiliary fixture 300, and the middle core part 142 may be separated from the auxiliary fixture 300, or may be placed in the auxiliary fixture for the next replacement.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. A lid forming die, comprising:

an upper die;

2. A cover forming mold according to claim 1, wherein the quick-change structure is selectively provided to the upper mold and the center core part so as to facilitate quick replacement of the center core part by the quick-change structure.

3. The cover forming mold according to claim 1, wherein the quick-change structure has a snap-fit state in which the center core member is fixed to the outer peripheral mold and a displaced state in which the center core member is adapted to be released from the outer peripheral mold.

4. A cover forming mold according to claim 3, wherein said quick-change structure includes a movable plunger movably provided to said upper mold, and a snap assembly selectively provided to said movable plunger and said center core member.

5. The cover forming mold of claim 4, wherein the snap assemblies have a snap state and a separated state, the snap assemblies snap to each other when the quick-change structure is in the snap state, and the snap assemblies are separated from each other when the quick-change structure is in the misaligned state.

6. The cover molding mold as claimed in claim 5, wherein the buckle assembly includes a hook provided to the center core member and a catch provided to the movable plug strip.

7. The cover forming mold of claim 6 wherein said upper mold is provided with a moving slot in which said movable insert is movably disposed and an indexing slot into which said fastener assembly extends.

8. The cover forming mold as claimed in claim 7, wherein the hook protruding from the middle core part extends to the offset groove, and two sides of the hook and a sidewall of the offset groove form two offset spaces, and when the movable slip moves left or right, the hook moves into the offset space on the left or right.

9. The cover molding die of claim 4 wherein said movable plunger includes an operating member and a moving member, said operating member being detachably connected to said moving member, said moving member being located inside said upper die, said operating member extending outside said upper die.

10. A cover molding die according to claim 9, wherein said operating member has a stopper protrusion and an operating head, said operating head being located at an end portion of said operating member, said stopper protrusion being located inside said operating head, said stopper protrusion restricting movement of said operating member to inside of said upper die.

11. The cover molding die of claim 10, wherein the catch moves into the catch when the inward movement of the operating member is stopped by the stopper protrusion.

12. The cover molding die according to claim 10, wherein the catch is moved to disengage from the catch when the operating member is moved outward and the moving member is caught by the moving groove.

13. A cover forming mold according to any one of claims 7 to 12, wherein the quick-change structure includes a plurality of the hooks and the hooks, the plurality of the hooks are respectively provided at intervals to the movable plunger, and the hooks are respectively provided to the plurality of the center core members.

14. The cover forming mold according to any one of claims 1-12, wherein the cover forming mold comprises a plurality of the cavity units, and the cavity units are arranged on the upper mold in an array arrangement.

15. The cover forming mold according to any one of claims 1 to 12, wherein the cover forming mold is provided with a first air passage and a second air passage, the first air passage communicates with the outer peripheral mold and the center core member, and exhaust positions of the first air passage and the second air passage correspond to an outer peripheral portion and a center portion of the cover, respectively.

16. The cover forming mold of any one of claims 1-12, wherein the cover forming mold is provided with a first waterway and a second waterway, the first waterway and the second waterway respectively surrounding the inside of the outer peripheral mold.

17. A quick-change structure adapted to be applied to a cap forming mold including an upper mold including a plurality of cavity units, the outer peripheral mold for forming a peripheral portion of the cap, the center core member for forming a central portion of the cap, the center core member being replaceably disposed inside the outer peripheral mold by the quick-change structure, characterized in that the quick-change structure includes a movable insert movably disposed on the upper mold, and a hook member selectively disposed on the movable insert and the center core member, the movable insert being movably controlled to hook and release the hook member.

18. The quick-change structure according to claim 17, wherein the buckle assembly includes a hook provided to the center core member and a catch provided to the movable slip.

19. The quick-change structure according to claim 18, wherein the upper die is provided with a moving slot in which the movable insert is movably disposed and an indexing slot into which the buckle assembly extends.

20. The quick-change structure according to claim 19, wherein the hook protruding from the middle core part extends to the offset groove, and two sides of the hook and the side wall of the offset groove form two offset spaces, and when the movable slip moves to the left or to the right, the buckle moves into the offset space on the left or right.

21. The quick-change structure according to claim 20, wherein the movable plunger includes an operating member detachably connected to the moving member and a moving member located inside the upper die, the operating member extending outside the upper die.

22. The quick-change structure according to claim 21, wherein the operating member has a stopper projection and an operating head, the operating head being located at an end of the operating member, the stopper projection being located inside the operating head, the stopper projection restricting movement of the operating member to inside of the upper die.

23. The quick-change structure according to claim 22, wherein the catch moves into the catch when the inward movement of the operating member is stopped by the stopper projection.

24. The quick-change structure according to claim 22, wherein the catch is moved to disengage from the catch when the moving member is stopped by the moving groove when the operating member is moved outward.

25. The quick-change structure according to any one of claims 17 to 24, wherein the quick-change structure comprises a plurality of the buckles and the hooks, the plurality of the buckles are respectively arranged at intervals on the movable slip, and the hooks are respectively arranged on the plurality of the middle core parts.