CN112339197A - Mould pressing system lid machine and system lid mould thereof - Google Patents

Abstract

The invention provides a mould pressing cap making machine and a cap making mould thereof, wherein the cap making mould comprises an upper mould and a lower mould, the upper mould is provided with a first water transporting component and a second water transporting component at the axis of a cylindrical pipe sleeve, the first water transporting component comprises a spiral water transporting core and an upper mould water-isolating sleeve sleeved on the outer side of the spiral water transporting core, the spiral water transporting core is connected with an inner sleeve to form a first liquid inlet flow channel, the upper mould water-isolating sleeve is communicated with the outer sleeve to form a first liquid return flow channel, the second water transporting component comprises a threaded core sleeved outside the upper mould water-isolating sleeve, and a core cooling flow channel coiled in a snake shape is formed at the lower end in the core wall of the threaded core column, so that the service life of parts in the mould is prolonged, the speed and the cooling effect are improved, and the production efficiency is further improved. The mould pressing cap making machine adopts the cap making mould, so that the fault rate caused by the cap making mould in the production process of the machine is effectively reduced, and the efficiency and the quality of producing the bottle cap by the whole mould pressing cap making machine are improved.

Description

Mould pressing system lid machine and system lid mould thereof

Technical Field

The invention relates to the field of cover making machine equipment, in particular to a mould pressing cover making machine and a cover making mould thereof.

Background

China is a world packaging manufacturing and consuming nation, the proportion of plastic packages in the total output value of the packaging industry exceeds 30 percent, the plastic packages become a vitality army in the packaging industry, and play an irreplaceable role in various fields of food, beverage, daily necessities and industrial and agricultural production. In recent years, the packaging products and packaging materials in the plastic packaging industry are steadily increasing, and new materials, new processes, new technologies and new products for packaging are continuously emerging. Nowadays, plastic packages are mostly adopted for various beverages, cosmetics, medicines and the like, plastic bottle caps are not available in plastic bottle-containing structures, and the plastic bottle caps are often produced separately.

Machines and apparatuses for manufacturing plastic closures are various, among which the mould-making machines are most commonly used. The existing mould pressing and cap making machines are all provided with a pressing module group, the pressing module group comprises a rotating main body, an upper mould and a bottom mould which are arranged on the rotating main body, the upper mould is provided with a cooling device, the structural design of the cooling device in the prior art is relatively unreasonable, the cooling effect is poor, as shown in figure 1, the cooling structure for the upper mould adopts a combination of two parts (such as A1 and A2 combination in figure 1), the cooling water is conveyed by utilizing the gap (such as D position in figure 1) of the two parts for cooling, in order to achieve the forming of the thread side wall of the bottle cap, the structural design finally causes the thickness of the structural wall of the forming part of the thread side wall (such as B position in figure 1), the stress concentration points are relatively more (such as C position in figure 1), the two parts are separated to cause the strength weakening, and are easy to deform, lose efficacy and the like in the processes of mould closing and demoulding, and the service, make whole mould life shorten, the maintenance cost increases, and production efficiency reduces, and the shunting cooling structure who adopts among the prior art simultaneously leads to the cooling water rivers of transporting inhomogeneous, and the cooling is insufficient, finally influences product quality.

Disclosure of Invention

In view of the above situation, the invention provides a cover making mold, which has the advantages of long service life, good cooling effect and high product forming quality.

The invention also provides a mould pressing cap making machine, and the cap making mould is adopted, so that the failure rate is reduced, the maintenance cost is reduced, and the production efficiency is improved.

To achieve the above object, the present invention provides a cap-making mold for use in the preparation of a bottle cap, the bottle cap including an inner side and an outer side opposite to the inner side, the inner side including a bottom portion and a threaded sidewall formed around the bottom portion in a circumferential direction thereof, the cap-making mold comprising: an go up mould and lower mould, go up the mould profile of mould and the cooperation of the lower model face of lower mould forms a die cavity that is used for the shaping bottle lid, go up the mould and still include: the upper die body comprises a cylindrical pipe sleeve and a fixed mounting piece, and the fixed mounting piece is mounted at the upper end of the cylindrical pipe sleeve; the cooling module is used for cooling and shaping the bottle cap in the mold cavity and comprises a first water conveying component and a second water conveying component; the first water transporting component is arranged at the axis of the cylindrical pipe sleeve and comprises a water guiding core, a spiral water transporting core, an upper die water separating sleeve and a joint, the water guiding core comprises an inner sleeve and an outer sleeve, the outer sleeve is coaxially sleeved outside the inner sleeve, the lower end part of the inner sleeve is hermetically connected with the upper end part of the spiral water conveying core, a first liquid inlet flow channel is formed by penetrating the upper end surface of the inner sleeve to the lower end surface of the spiral water conveying core, the upper die water-proof sleeve is sleeved outside the spiral water conveying core and is in sealing installation with the outer sleeve, a cooling cavity is formed between the inner wall of the upper die water-proof sleeve and the lower end face of the spiral water conveying core, a first liquid return flow channel is formed between the inner wall of the upper die water-isolating sleeve and the outer wall of the spiral water conveying core and between the inner wall of the outer sleeve and the outer wall of the inner sleeve; the joint comprises a first liquid inlet and a first liquid return port, the first liquid inlet is communicated with the first liquid inlet flow channel, and the first liquid return port is communicated with the first liquid return flow channel; the second water conveying assembly comprises a liquid inlet pipe, a liquid return pipe and a thread core, the thread core is sleeved outside the upper die water-separation sleeve, the thread core comprises a cylindrical wall body, a thread groove is concavely arranged on the outer side of the lower end of the cylindrical wall body and used for forming a thread side wall of the bottle cap, a second liquid inlet and a second liquid return port are formed in the upper end face of the cylindrical wall body, the second liquid inlet and the second liquid return port respectively extend downwards along the cylindrical wall body to form a second liquid inlet flow channel and a second liquid return flow channel, a core cooling flow channel coiled in a snake shape along the circumferential direction of the cylindrical wall body is formed at the lower end in the cylindrical wall body, and the core cooling flow channel is respectively communicated with the second liquid inlet flow channel and the second liquid return flow channel; the liquid inlet pipe and the liquid return pipe penetrate through the joint and extend downwards into the cylindrical pipe sleeve, and are respectively communicated with the second liquid inlet and the second liquid return port; and the ejection module comprises an airflow auxiliary ejection structure, the airflow auxiliary ejection structure comprises an air inlet nozzle and an airflow channel, and the airflow channel extends to the mold cavity and is used for assisting in blowing out the bottle cap.

Preferably, the lower die comprises a die holder and a third water transporting assembly, the third water transporting assembly is arranged in the die holder and comprises a lower die water-isolating sleeve, a third liquid inlet is formed in the middle of the bottom surface, close to the die holder, of the lower die water-isolating sleeve, the third liquid inlet extends into the lower die water-isolating sleeve to form a lower die cooling flow channel, a third liquid return port is formed at the tail end of the lower die cooling flow channel of the lower die water-isolating sleeve, and the lower die water-isolating sleeve is installed in the die holder and matched with the die holder to form a lower die profile which is used for being matched with the outer side of the bottle cap; run through on the die holder respectively and be provided with a third feed liquor runner and a third return liquid runner, the third feed liquor runner with third feed liquor mouth intercommunication, third return liquid runner and third return liquid mouth intercommunication are consequently equipped with in the lower mould third fortune water subassembly with go up the mould first fortune water subassembly with the cooperation of second fortune water subassembly is common right the die cavity cools off, greatly shortens the time that the bottle lid cools off the design, and then improves production efficiency.

Furthermore, the lower die cooling flow channel is in a vortex shape in the bottom of the lower die water-separating sleeve, and is in a serpentine coiled shape in the side wall of the lower die water-separating sleeve, wherein the vortex-shaped lower die cooling flow channel in the bottom of the lower die water-separating sleeve is used for realizing cooling forming of the bottom of the outer side of the bottle cap, the serpentine coiled lower die cooling flow channel in the side wall of the lower die water-separating sleeve is used for realizing cooling forming of the side wall of the bottle cap, and the lower die cooling flow channel adopts a cooling flow channel structure in a single direction of the vortex shape and the serpentine coiled shape, so that the problems of uneven flow rate and flow, poor cooling effect and the like existing in the traditional split-flow cooling are avoided, the cooling effect is further.

Preferably, the spiral water conveying core comprises a convex ring part and a spiral convex part, the convex ring part is positioned on the outer side of the lower end of the spiral water conveying core, the peripheral side surface of the convex ring part is uniformly provided with a predetermined number of diversion grooves formed in a concave mode, the spiral convex part is formed on the outer side of the spiral water conveying core and positioned above the convex ring part, and the spiral convex part is tangent to the inner wall of the upper die water separating sleeve.

Preferably, the upper ends of the inner sleeve and the outer sleeve extend into the joint and are connected with the joint in a sealing manner.

Preferably, the joint is provided with a through hole in clearance fit with the liquid inlet pipe and the liquid return pipe respectively in a penetrating way.

Preferably, a pair of first springs are provided between the joint and the fixed mounting member to support and cushion the joint.

Preferably, a second spring is arranged between the fixed mounting part and the cylindrical pipe sleeve and used for providing forming pressure and restoring the upper die after the die is opened.

Preferably, a third spring is sleeved on the outer side of the upper end of the threaded core to realize the resetting of the threaded core.

The invention also provides a mould pressing cover making machine, which comprises a frame, and a feeding module, an extruding module and a pressing module which are arranged on the frame, wherein the pressing module comprises a rotating main body and a preset number of compression moulds arranged on the rotating main body, and the mould pressing mould is characterized by being the above mould for making the cover.

The invention has the beneficial effects that:

the invention provides a cap making die, which comprises an upper die and a lower die, wherein the upper die is provided with a first water transporting assembly and a second water transporting assembly at the axis of a cylindrical pipe sleeve, the first water transporting assembly comprises a water guiding core, a spiral water transporting core, an upper die water-isolating sleeve and a connector, the water guiding core comprises an outer sleeve and an inner sleeve which are coaxially arranged, the lower end part of the inner sleeve and the upper end part of the spiral water transporting core are connected, the upper end surface of the inner sleeve penetrates through the lower end surface of the spiral water transporting core to form a first liquid inlet flow channel, the upper die water-isolating sleeve is sleeved outside the spiral water transporting core and is hermetically mounted with the outer sleeve, a cooling cavity is formed between the inner wall of the upper die water-isolating sleeve and the lower end surface of the spiral water transporting core and is used for realizing the cooling and shaping of the bottom inside of a bottle cap and simultaneously providing cooling for the side wall of a thread of the bottle cap, a first liquid return flow channel is formed between the inner wall of the upper die water-isolating sleeve and the outer wall of the spiral water conveying core and between the inner wall of the outer sleeve and the outer wall of the inner sleeve, the first liquid return flow channel passes through the spiral water conveying core with a spiral structure, one-way spiral water return is unified, and the problems that the conveyed cooling water flow is uneven and the cooling is insufficient due to the fact that a flow-dividing type cooling structure is adopted in the traditional method are solved; the first water conveying assembly conveys cooling water through a pipe-in-pipe manner, the design structurally forms convection of low-temperature cooling water in the first liquid inlet flow channel and warming cooling water in the first liquid return flow channel, so that a mutual heat exchange function is realized, the warming cooling water circulating back along the first liquid return flow channel is properly cooled, the first water conveying assembly reduces the work of external equipment on cooling the warming cooling water while ensuring the cooling effect, reduces energy consumption and further reduces the production cost; meanwhile, the second water conveying assembly comprises a threaded core sleeved outside the upper die water-separation sleeve, a thread groove for forming a threaded side wall of the bottle cap is formed in the outer side of the lower end of the threaded core, the threaded core comprises a cylindrical wall body, a core cooling flow channel coiled in a snake shape is formed in the lower end of the cylindrical wall body along the circumferential direction of the cylindrical wall body and used for cooling and shaping the threaded side wall of the bottle cap, so that the threaded core is independently designed for cooling and shaping the threaded side wall of the bottle cap, the core cooling flow channel coiled in the snake shape adopts a one-way flow design to ensure uniform cooling water flow, the cooling effect is improved, the time for cooling and shaping the bottle cap is further shortened by matching with the first water conveying assembly, and the production efficiency is; further, the independent design enough space design can be reserved to the threaded core go up the mould water-proof cover, guarantee go up the structural design of mould water-proof cover more reasonable, and the thickness of mechanism wall thickness is even promptly, reduces stress concentration point, has strengthened wholly go up mould water-proof cover's mechanical strength, its life obtains very big improvement, and the life of whole mould also can improve, and then reduces the maintenance cost, improves production efficiency.

Moreover, the lower die comprises a third water conveying assembly which is matched with the first water conveying assembly and the second water conveying assembly of the upper die to cool the die cavity together, so that the time for cooling and shaping the bottle cap is greatly shortened, and the production efficiency is improved; meanwhile, a vortex-shaped cooling flow channel structure in a single direction is arranged in the lower die water-resisting sleeve in the third water conveying assembly, so that the problems of non-uniform flow velocity and flow, poor cooling effect and the like in the traditional split-flow cooling are solved, the cooling effect is improved, and the product quality is improved.

The mould pressing cap making machine provided by the invention adopts the cap making mould, so that the failure rate caused by the cap making mould in the production process of the machine is reduced to the minimum, and the efficiency and the quality of the whole mould pressing cap making machine for producing the bottle cap are further improved due to the reduction of the cooling and shaping time of the bottle cap and the improvement of the cooling effect of the cap making mould.

Drawings

Fig. 1 is a partial structural schematic view of a cooling module in the prior art provided by the present invention;

fig. 2 is a schematic three-dimensional structure diagram of a cap making mold according to an embodiment of the present invention;

FIG. 3 is a front view of the lid forming mold of the view of FIG. 2;

FIG. 4 is an enlarged partial schematic view of FIG. 3 at A;

FIG. 5 is a schematic view of a portion of the structure of FIG. 3;

fig. 6 is a schematic view of a threaded core provided in this embodiment in a perspective state.

In the figure: 1-gas source joint, 2 a-liquid inlet joint, 2 b-liquid return joint, 3-joint, 4-first spring, 10-upper mold, 20-lower mold, 30-bottle cap, 20 a-liquid inlet pipe, 20 b-liquid return pipe, 100-fixed mounting piece, 101-outer sleeve, 102-inner sleeve, 103-first liquid inlet flow channel, 104-second liquid inlet flow channel, 104 a-second liquid inlet, 105-spiral water conveying core, 105 a-spiral convex part, 105 b-convex ring part, 106-threaded core, 106 a-spiral thread groove, 107-upper mold water-isolating sleeve, 108-third spring, 109-second liquid return flow channel, 109 a-second liquid return port, 110-second spring, 111-cylindrical pipe sleeve, 111 a-outer sleeve piece, 111 b-retaining ring, 112-gas flow channel, 113-first liquid return flow channel, 114-core cooling flow channel, 115-cooling cavity, 200-die holder, 201-lower die water-isolating sleeve, 202-lower die cooling flow channel, 203-third liquid inlet flow channel, 204-third liquid inlet, 205-third liquid return flow channel, 206-lower die pressing sleeve, 301-first liquid inlet, 302-first liquid return port, 303-through hole.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the embodiments.

Example 1

Referring to fig. 2 and 5, the present embodiment provides a cap making mold for preparing a bottle cap 30, the bottle cap 30 including an inner side and an outer side opposite to the inner side, the inner side including a bottom portion and a threaded sidewall formed around the bottom portion in a circumferential direction thereof, the cap making mold comprising: an upper die 10 and a lower die 20, wherein an upper die surface of the upper die 10 and a lower die surface of the lower die 20 cooperate to form a mold cavity (not shown) for molding the bottle cap 30.

Referring to fig. 2, 3, 4, 5 and 6, the upper mold 10 includes an upper mold body, a cooling module and an ejection module. The upper die 10 body comprises a cylindrical sleeve 111 and a fixing and mounting piece 100, wherein the fixing and mounting piece 100 is mounted at the upper end of the cylindrical sleeve and extends into the cylindrical sleeve; the cooling module is used for cooling and shaping the bottle cap 30 in the mold cavity (not shown), and comprises a first water transporting component and a second water transporting component; the first water transporting assembly is arranged at the axis of the cylindrical pipe sleeve 111, and comprises a water guiding core, a spiral water transporting core 105, an upper mold water separating sleeve 107 and a joint 3, wherein the water guiding core comprises an inner sleeve 102 and an outer sleeve 101, the outer sleeve 101 is coaxially sleeved outside the inner sleeve 102, a lower end of the inner sleeve 102 is hermetically connected with an upper end of the spiral water transporting core 105, an upper end surface of the inner sleeve 102 penetrates through to a lower end surface of the spiral water transporting core 105 to form a first liquid inlet flow channel 103, the upper mold water separating sleeve 107 is sleeved outside the spiral water transporting core 105 and is hermetically mounted with the outer sleeve 101, a cooling cavity 115 is formed on an inner wall of the upper mold water separating sleeve 107 and a lower end surface of the spiral water transporting core 105, a first liquid return flow channel 113 is formed between an inner wall of the upper mold water separating sleeve 107 and an outer wall of the spiral water transporting core 105 and an inner wall of the outer sleeve 101 and an outer wall of the inner sleeve 102, the upper ends of the inner sleeve 102 and the outer sleeve 101 extend into the joint 3 and are connected with the joint 3 in a sealing way; the joint 3 comprises a first liquid inlet 301 and a first liquid return port 302, the first liquid inlet 301 is communicated with the first liquid inlet channel 103, and the first liquid return port 302 is communicated with the first liquid return channel 113; the second water transporting assembly comprises a liquid inlet pipe 20a, a liquid return pipe 20b and a thread core 106, the thread core 106 is sleeved outside the upper die water-separating sleeve 107, the thread core 106 comprises a cylindrical wall body, the cylindrical wall body has a certain wall thickness and comprises an inner side and an outer side, the inner side of the cylindrical wall body is the region between the inner side and the outer side, the outer side of the lower end of the cylindrical wall body is concavely provided with a thread groove 106a for forming the thread side wall of the bottle cap 30, the upper end surface of the cylindrical wall body is provided with a second liquid inlet 104a and a second liquid return port 109a, the second liquid inlet 104a and the second liquid return port 109a respectively extend downwards along the cylindrical wall body to form a second liquid inlet flow channel 104 and a second liquid return flow channel 109, the lower end in the cylindrical wall body is provided with a snake-shaped core cooling flow channel 114 coiled along the circumferential direction of the cylindrical wall body, as shown in fig. 6, the core cooling channel 114 is respectively communicated with the second liquid inlet channel 104 and the second liquid return channel 109; one end of the liquid inlet pipe 20a and one end of the liquid return pipe 20b are respectively externally connected with a liquid inlet joint 2a and a liquid return joint 2b, the other end of the liquid inlet pipe 20a and the other end of the liquid return pipe 20b penetrate through the joint 3 and extend downwards into the cylindrical pipe sleeve 111 and are respectively communicated with the second liquid inlet 104a and the second liquid return port 109a, and the joint 3 penetrates through a through hole 303 which is respectively in clearance fit with the liquid inlet pipe 20a and the liquid return pipe 20 b; an ejection module comprises an airflow-assisted ejection structure, which comprises an air inlet nozzle (not shown), a casing 111a, a fixing ring 111b and an air flow channel 112, the outer sleeve member 111a is sleeved outside the threaded core 106, the fixing ring 111b is sleeved outside the outer sleeve member 111a, the air inlet nozzle (not shown) is opened on the fixing and mounting member 100, an air supply connector 1 is mounted on the air inlet nozzle (not shown), the air inlet nozzle (not shown) is communicated with the air flow channel 112, the air flow channel 112 extends to the mold cavity (not shown) along a first gap between the threaded core 106 and the outer sleeve 111a and a second gap formed between the outer sleeve 111a and the fixing ring 111b, respectively, for assisting in blowing out the bottle cap 30 to realize ejection of the liquid inlet tube 20a of the bottle cap 30.

Further, the spiral conveying water core 105 further comprises a convex ring part 105b and a spiral protrusion 105a, the convex ring part 105b is located at the outer side of the lower end of the spiral conveying water core 105, a predetermined number of diversion channels (not shown) formed in a concave manner are uniformly distributed on the peripheral side surface of the convex ring part 105b, the spiral protrusion 105a is formed at the outer side of the spiral conveying water core 105 and located above the convex ring part 105b, the spiral protrusion 105a is tangent to the inner wall of the upper water jacket 107, wherein the convex ring part 105b and the spiral protrusion 105a and the spiral conveying water core 105 are of an integral structure.

Further, a pair of first springs 4 are provided between the joint 3 and the fixing mount 100, and the pair of first springs 4 support and cushion the joint 3. A second spring 110 is disposed between the fixing member 100 and the cylindrical sleeve 111 to provide a molding pressure of the mold, and is used to reset the upper mold 10 after the mold is opened, so as to prevent the threaded core 106 from colliding with the lower mold 20. A third spring 108 is sleeved outside the upper end of the threaded core 106 to realize the resetting of the threaded core 106.

Referring to fig. 5, the lower mold 20 includes a mold base 200, a third water transporting assembly, and a lower mold press sleeve 206 disposed outside the mold base 200. The third water conveying assembly is arranged in the die holder 200 and comprises a lower die water-separating jacket 201, a third liquid inlet 204 is formed in the middle of the lower die water-separating jacket 201 close to the bottom surface of the die holder 200, the third liquid inlet 204 extends into the lower die water-separating jacket 201 to form a lower die cooling flow channel 202, the lower die cooling flow channel 202 is formed in a spiral shape in the bottom of the lower die water-separating jacket 201 and is formed in a serpentine winding shape in the side wall of the lower die water-separating jacket 201, wherein the spiral lower die cooling flow channel 202 designed in the bottom of the lower die water-separating jacket 201 is used for cooling and forming the bottom of the outer side of the bottle cap 30, the serpentine winding lower die cooling flow channel 202 designed in the side wall of the lower die water-separating jacket 201 is used for cooling and forming the side wall of the bottle cap 30, and the lower die water-separating jacket 201 is provided with a third liquid return opening (not shown) at the tail end, the lower die water-isolating sleeve 201 is installed in the die holder 200 and forms the lower die profile (not shown) in cooperation with the die holder 200 so as to be adapted to the outer side of the bottle cap 30; run through respectively on the die holder 200 and be provided with a third feed liquor runner 203 and a third return liquid runner 205, third feed liquor runner 203 with third inlet port 204 intercommunication, liquid runner 205 and third return liquid port (not shown) intercommunication are returned to the third, lower mould cooling runner 202 designs into the cooling runner structure of the single direction of vortex form and snakelike coiled form, has avoided adopting traditional shunting cooling to have velocity of flow, flow inhomogeneous, and the cooling effect subalternation problem, and then improves cooling effect, improves product quality.

The principle of the present embodiment for conveying cooling water and ejecting the caps 30 is as follows, with reference to the accompanying drawings:

the first water transporting assembly works, low-temperature cooling water → the first liquid inlet 301 → the first liquid inlet channel 103 → the cooling cavity 115 → the first liquid return channel 113 → the first liquid return port 302 → the heating cooling water; wherein the low-temperature cooling water cools and shapes the inner side of the bottle cap 30 at the cooling cavity 115, and the temperature-rising cooling water and the low-temperature cooling water exchange heat at the inner sleeve 102 and the outer sleeve 101.

The second water transport assembly works, and the low-temperature cooling water → the liquid inlet pipe 20a → the second liquid inlet 104a → the second liquid inlet channel 104 → the core cooling channel 114 → the second liquid return channel 109 → the second liquid return port 109a → the liquid return pipe 20b → the temperature-raised cooling water; wherein the low temperature cooling water cools and sets the threaded sidewall of the bottle cap 30 at the core cooling flow passage 114.

The third water transport component works, low-temperature cooling water → the third liquid inlet channel 203 → the third liquid inlet 204 → the lower die cooling channel 202 → the third liquid return port → the third liquid return channel 205 → the heating cooling water; the low-temperature cooling water cools and shapes the outer side of the bottle cap 30 at the lower mold cooling flow passage 202, and the temperature-rising cooling water cools and shapes the outer side of the bottle cap 30 at the third liquid return flow passage 205.

Ejecting the bottle cap 30, wherein an external air source is connected to the air source connector 1, air flow enters the air flow channel 112 along an air inlet nozzle (not shown) and enters the cavity along the air flow channel 112, and ejection of the bottle cap 30 is realized.

Example 2

This embodiment provides a cap press comprising a frame (not shown), a feeding module (not shown) disposed on the frame (not shown), an extruding module (not shown), and a pressing module (not shown), the pressing module comprising a rotating body and a predetermined number of compression molds disposed on the rotating body, the compression molds being the cap making molds provided in embodiment 1. The feeding module extrudes prepared raw materials to the pressing module through the extrusion module, and the extrusion module extrudes the raw materials to the pressing module and then the cover is manufactured through the cover manufacturing die.

The foregoing description is only of particular embodiments of the present invention, but it will be understood by those skilled in the art that the present invention is by way of illustration only, the scope of the present invention being defined by the appended claims. Accordingly, all equivalent changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (10)

1. A closure forming die for use in the preparation of a closure for a bottle, said closure comprising an inner side and an outer side opposite said inner side, said inner side comprising a base and a threaded sidewall formed circumferentially around said base, said closure forming die comprising: an go up mould and lower mould, go up the mould profile of mould and the cooperation of the model face down of lower mould forms and is used for the shaping a die cavity of bottle lid, its characterized in that, go up the mould and still include:

the upper die body comprises a cylindrical pipe sleeve and a fixed mounting piece, and the fixed mounting piece is mounted at the upper end of the cylindrical pipe sleeve;

the cooling module is used for cooling and shaping the bottle cap in the mold cavity and comprises a first water conveying component and a second water conveying component; the first water transporting component is arranged at the axis of the cylindrical pipe sleeve and comprises a water guiding core, a spiral water transporting core, an upper die water separating sleeve and a joint, the water guiding core comprises an inner sleeve and an outer sleeve, the outer sleeve is coaxially sleeved outside the inner sleeve, the lower end part of the inner sleeve is hermetically connected with the upper end part of the spiral water conveying core, a first liquid inlet flow channel is formed by penetrating the upper end surface of the inner sleeve to the lower end surface of the spiral water conveying core, the upper die water-proof sleeve is sleeved outside the spiral water conveying core and is in sealing installation with the outer sleeve, a cooling cavity is formed between the inner wall of the upper die water-proof sleeve and the lower end face of the spiral water conveying core, a first liquid return flow channel is formed between the inner wall of the upper die water-isolating sleeve and the outer wall of the spiral water conveying core and between the inner wall of the outer sleeve and the outer wall of the inner sleeve; the joint comprises a first liquid inlet and a first liquid return port, the first liquid inlet is communicated with the first liquid inlet flow channel, and the first liquid return port is communicated with the first liquid return flow channel; the second water conveying assembly comprises a liquid inlet pipe, a liquid return pipe and a thread core, the thread core is sleeved outside the upper die water-separation sleeve, the thread core comprises a cylindrical wall body, a thread groove is concavely arranged on the outer side of the lower end of the cylindrical wall body and used for forming a thread side wall of the bottle cap, a second liquid inlet and a second liquid return port are formed in the upper end face of the cylindrical wall body, the second liquid inlet and the second liquid return port respectively extend downwards along the inside of the cylindrical wall body to form a second liquid inlet flow channel and a second liquid return flow channel, a core cooling flow channel coiled in a snake-shaped mode along the circumferential direction of the cylindrical wall body is formed at the lower end of the cylindrical wall body, and the core cooling flow channel is respectively communicated with the second liquid inlet flow channel and the second liquid return flow channel; the liquid inlet pipe and the liquid return pipe penetrate through the joint and extend downwards into the cylindrical pipe sleeve, and are respectively communicated with the second liquid inlet and the second liquid return port; and

the ejection module comprises an airflow auxiliary ejection structure, the airflow auxiliary ejection structure comprises an air inlet nozzle and an airflow channel, and the airflow channel extends to the mold cavity and is used for assisting in blowing out the bottle cap.

2. The cap making mold according to claim 1, wherein the lower mold comprises a mold base and a third water transporting assembly, the third water transporting assembly is arranged in the mold base and comprises a lower mold water isolating sleeve, a third liquid inlet is formed in the lower mold water isolating sleeve and close to the middle of the bottom surface of the mold base, the third liquid inlet extends into the lower mold water isolating sleeve to form a lower mold cooling flow passage, a third liquid return port is formed at the tail end of the lower mold cooling flow passage, and the lower mold water isolating sleeve is arranged in the mold base and matched with the mold base to form the lower mold surface to be matched with the outer side of the bottle cap; and a third liquid inlet flow channel and a third liquid return flow channel are respectively arranged on the die holder in a penetrating manner, the third liquid inlet flow channel is communicated with the third liquid inlet, and the third liquid return flow channel is communicated with the third liquid return port.

3. A lid making mold as set forth in claim 2 wherein said lower mold cooling flow passage swirls in the bottom of said lower mold water jacket and snakes in the sidewall of said lower mold water jacket.

4. A cap making mold according to claim 1, wherein the spiral conveying core further comprises a convex ring part and a spiral convex part, the convex ring part is positioned outside the lower end of the spiral conveying core, the peripheral side surface of the convex ring part is uniformly provided with a predetermined number of concave diversion grooves, the spiral convex part is formed outside the spiral conveying core and positioned above the convex ring part, and the spiral convex part is tangent to the inner wall of the upper water-separating jacket.

5. A closure forming die as claimed in claim 1, wherein the upper ends of the inner sleeve and the outer sleeve each extend into and are sealingly connected to the adaptor.

6. A lid-making mould according to claim 5, wherein the joint is provided with a through hole through which the liquid inlet pipe and the liquid return pipe are in clearance fit, respectively.

7. A lid making mould according to claim 1, characterised in that a pair of first springs are provided between the joint and the fixed mounting.

8. A lid-making mould according to claim 1, wherein a second spring is provided between the fixing mount and the cylindrical sleeve.

9. A cap-making mould according to claim 1, wherein a third spring is sleeved outside the upper end of the threaded core.

10. A press-moulding lid-making machine comprising a frame, a feeding module, an extrusion module and a pressing module arranged on said frame, said pressing module comprising a rotating body and a predetermined number of press-moulding tools arranged on said rotating body, characterized in that said press-moulding tools are the lid-making tools according to any one of claims 1-9.

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