CN116587545A

CN116587545A - Automatic hot punching device for in-mold water gap

Info

Publication number: CN116587545A
Application number: CN202310399271.8A
Authority: CN
Inventors: 吕祉愉
Original assignee: Chongqing Xinmeng Precise Mould Co ltd
Current assignee: Chongqing Xinmeng Precise Mould Co ltd
Priority date: 2023-04-14
Filing date: 2023-04-14
Publication date: 2023-08-15

Abstract

The invention relates to the technical field of hot cutting devices of water gaps, in particular to an automatic hot cutting device of an in-mold water gap, which comprises a main machine box, wherein a transmission module is arranged above the main machine box, a punching module is arranged above the transmission module, and a clamping module is arranged above the punching module.

Description

Automatic hot punching device for in-mold water gap

Technical Field

The invention relates to the technical field of hot cutting devices of water gaps, in particular to an automatic hot cutting device of an in-mold water gap.

Background

In the plastic electronic products commonly used in life, a mold is generally adopted for injection molding, and when the plastic electronic products are processed and molded, a sprue on the products, namely a sprue gate in the industry, can generate redundant molding materials, and in order to ensure the integrity and good appearance of the products, the residual sprue gate is required to be cut off after molding;

however, after the injection molding process of plastic spare and accessory parts, the material head is connected with the product through the pouring gate, a worker needs to trim the pouring gate, the labor intensity is high, the trimming of the pouring gate is not attractive, plastic is evaporated and refrigerated, the cut pouring gate surface is not clean, the quality of the product is not improved, and the pouring gate is still required to be cut by manual operation for multiple times, so that the pouring gate is flattened and the labor is wasted; after the part of the plastic part is molded, the part of the plastic part still adheres to the inside of the mold groove, and then the molded plastic part is peeled off manually, so that time and labor are wasted; when the plastic part is cooled, because the cooling water in the existing injection mold cannot circulate, the heat absorbed by the cooling water is not easy to dissipate, the cooling time length is increased, and the production period is increased, so that the production cost of enterprises is also improved, and the development of the enterprises is not facilitated.

Disclosure of Invention

The invention aims to provide an automatic hot punching device for an in-mold water gap so as to solve the problems in the background technology.

The technical scheme of the invention is as follows: the automatic hot stamping device for the in-mold water gap comprises a main machine box, a transmission module is arranged above the main machine box, a stamping module is arranged above the transmission module, a clamping module is arranged above the stamping module, the stamping module comprises an upper die holder, a lower die holder, a male die, hydraulic guide rods and a cylinder, the lower die holder is fixedly arranged on the inner wall of one side of the main machine box, two groups of hydraulic guide rods are fixedly arranged on the inner wall of the other side of the main machine box, the same upper die holder is fixedly arranged on one side, opposite to the lower die holder, of the two groups of hydraulic guide rods, the end key of the upper die holder is fixedly connected with the output end of the cylinder, the male die is arranged in the middle position of the upper die holder through welding, a die groove matched with the diameter of the male die is formed in one side, opposite to the lower die holder, a pouring opening is formed in a penetrating manner, the pouring opening is communicated with the die groove, and the hot stamping module, the ejection module and the cooling module are arranged in the lower die holder.

Preferably, the hot cutting module comprises an oil cylinder, a cutter, a spring sleeve and a guide block, wherein the oil cylinder is fixedly arranged on the inner wall of the lower die holder, the output end of the oil cylinder is fixedly connected with an end key of the cutter, the spring sleeve is sleeved on the outer side of the cutter, which is close to the oil cylinder, a damper is arranged in the spring sleeve, the cutter is arranged on the outer side of the die groove, the guide block is arranged on one side, which is far away from the die groove, of the cutter, a through groove for hot cutting is formed between the die groove and the guide block, and a rubber cushion block is fixedly arranged at the end position of the through groove, which extends to the upper die holder.

Preferably, the cooling module comprises a flow guide pipe, a water tank and a bidirectional pump, wherein the mold groove is far away from three outer side surfaces of the pouring opening, a flow guide pipe is communicated with one side of the pouring opening, one end of the flow guide pipe is communicated with one end of the bidirectional pump, one end of the bidirectional pump is communicated with the water tank, the water tank is arranged on the side of the main machine box through a bracket, and the bidirectional pump is arranged above the water tank.

Preferably, the clamping module comprises a screw rod sliding table, an electric push rod, a mechanical arm and an electric clamping jaw, wherein the screw rod sliding table is installed on the inner wall of the main machine box, the electric push rod is fixedly connected to the moving end of the screw rod sliding table, the mechanical arm is rotatably connected to the bottom position of the electric push rod, and one end, far away from the electric clamping jaw, of the mechanical arm is rotatably connected with the electric clamping jaw.

Preferably, the transmission module comprises a driving roller, a servo motor, a conveyor belt, a chain wheel set and a plurality of driven rollers, wherein the driving roller and the driven rollers are arranged above the main case through bearings, the same conveyor belt is covered on the driving roller and the driven rollers, two adjacent groups of rollers are in transmission connection through the chain wheel set, and the output end of the servo motor is fixedly connected with one end of the driving roller.

Preferably, the liftout module includes thimble, electric putter and kicking block, two electric putter is equal fixed mounting on the inner wall of mainframe box, two the equal fixedly connected with thimble of one end that the mainframe box was kept away from to electric putter, the blown down tank that a set of symmetry set up has been run through to the side that the die holder is relative with the thimble, two the blown down tank all is linked together with the mould groove, two the thimble extends to the one end in two blown down tanks respectively fixedly connected with kicking block.

Preferably, a control system is arranged on the outer side of the main case, the control system comprises a touch screen, a controller is arranged in the touch screen, sensors are arranged in the transmission module, the stamping module, the hot cutting module, the material ejection module and the cooling module, and the touch screen is electrically connected with the transmission module, the stamping module, the hot cutting module, the material ejection module and the cooling module respectively.

Preferably, the first material collecting box and the second material collecting box are respectively arranged at the discharge end of the transmission module and the side of the main machine box.

Compared with the prior art, the automatic hot punching device for the in-mold water gap provided by the invention has the following improvement and advantages:

the method comprises the following steps: compared with the traditional cold cutting process that the water gap is cut after the plastic part is cold cut, the water gap cutting action and the cooling process are synchronously performed, the water gap cutting device has the advantages that the cut part is whitened and the appearance of the plastic part is affected, and the water gap cutting device is still in a hot melting state after the plastic part is cut, so that the cut opening of a plastic part product is always consistent with the appearance, and the production quality of the plastic part is improved.

And two,: according to the invention, the water gap of the plastic part is cut off in the hot melting state, so that the subsequent water gap reprocessing procedure is replaced, the production period of the plastic part is shortened, and the production efficiency of the plastic part is improved.

And thirdly,: according to the invention, the cooling module is arranged, the bidirectional pump pumps the cooling water source in the water tank into the cooling cavity, the bidirectional pump can realize bidirectional adjustment, and the water pumping and water delivery actions are synchronously realized, so that the cooling water source in the cooling cavity is quickly replaced, the cooling efficiency is further improved, the plastic part is effectively ensured to be uniformly cooled, and the production quality of the plastic part is improved.

Fourth, it is: according to the invention, the ejector module is arranged, the electric push rod drives the ejector pin, and the ejector block enables the plastic part in the die groove to be ejected upwards, so that the plastic part adhered in the die groove falls off on the conveying belt below, the manual stripping of the plastic part is avoided, and the stripping efficiency of the plastic part is improved.

Fifth, it is: according to the invention, the clamping module is arranged, the electric clamping jaw clamps the water gap on the pouring port to the second collecting box, so that the phenomenon that the residual water gap falls into the main machine box 1 to cause water gap accumulation and influence other processing procedures is avoided, and the main machine box can be kept in a cleaner state by arranging the clamping mechanism, so that the residual water gap is convenient to collect in a concentrated manner, and the time and the labor are saved.

Drawings

The invention is further explained below with reference to the drawings and examples:

FIG. 1 is a schematic diagram of the front structure of the present invention;

FIG. 2 is a schematic diagram of a front mold closing structure of the present invention;

FIG. 3 is a schematic perspective view of the present invention;

FIG. 4 is a schematic diagram of the upper and lower die holders of the present invention;

FIG. 5 is a schematic diagram of a die assembly structure of an upper die holder and a lower die holder according to the present invention;

FIG. 6 is a schematic diagram of a lower die holder die slot according to the present invention;

FIG. 7 is a top view of the present invention;

fig. 8 is a schematic perspective view of a clamping module according to the present invention.

Reference numerals illustrate: 1. a main chassis; 2. an upper die holder; 3. a lower die holder; 4. a male die; 5. a hydraulic guide rod; 6. a cylinder; 8. a mold groove; 9. pouring the port; 10. an oil cylinder; 11. a cutter; 12. a spring sleeve; 13. a guide block; 14. a rubber cushion block; 15. a flow guiding pipe; 16. a water tank; 17. a bi-directional pump; 18. a screw rod sliding table; 19. an electric push rod; 20. a mechanical arm; 21. an electric clamping jaw; 22. a drive roll; 23. a servo motor; 24. a conveyor belt; 25. driven roller; 26. a touch screen; 27. a first material collecting box; 28. a second material collecting box; 29. a thimble; 30. a top block; 31. a discharge chute; 32. a cooling chamber; 33. and (3) a bracket.

Detailed Description

The following detailed description of the present invention will provide clear and complete description of the technical solutions of the embodiments of the present invention, with reference to fig. 1 to 8, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The invention provides an automatic hot punching device for an in-mold water gap through improvement, as shown in fig. 1-8, the automatic hot punching device comprises a main machine box 1, a transmission module is arranged above the main machine box 1, a punching module is arranged above the transmission module, a clamping module is arranged above the punching module, the punching module comprises an upper mold base 2, a lower mold base 3, a punch 4, hydraulic guide rods 5 and an air cylinder 6, the inner wall of one side of the main machine box 1 is fixedly provided with the lower mold base 3, the inner wall of the other side is fixedly provided with two groups of hydraulic guide rods 5, one side of the two groups of hydraulic guide rods 5 opposite to the lower mold base 3 is fixedly provided with the same upper mold base 2, an end key of the upper mold base 2 is fixedly connected with the output end of the air cylinder 6, a punch 4 is arranged at the middle position of the upper mold base 2 through welding, a mold groove 8 matched with the ruler diameter of the punch 4 is formed in the upper position of the lower mold base 3, a pouring opening 9 is formed through the upper position of the lower mold base 3, the pouring opening 9 is communicated with the mold groove 8, and the upper mold base 3 is internally provided with a hot cutting module and a cooling module.

When the device is used, the air cylinder 6 drives the upper die holder 2 to be forwards attached to the lower die holder 3 to finish the closing of the die, then the material is injected into the die groove 8 through the pouring opening 9, then the pressure maintaining process is carried out, the material of the pouring opening 9 is separated from a finished product of a plastic part in the die groove 8 by the cutter when the pressure maintaining is finished, then the cooling stage of the plastic part is carried out, after the pouring opening 9 and the plastic part in the die groove 8 are subjected to cutting gate interface shaping, the control system controls the cutter 11 to start the rollback action, the water cutting opening action and the cooling process are synchronously carried out, and compared with the water opening in the traditional cold cutting process, the water opening is required to be cut after the plastic part is subjected to cold cutting, the cut part is whitened, the appearance of the plastic part is influenced, and the invention is still in a hot melting state after the plastic part is cut, so that the cut opening of the plastic part is always consistent with the appearance, and the production quality of the plastic part is improved.

As a preferred scheme, still further, the hot-cut module includes hydro-cylinder 10, cutter 11, spring housing 12 and guide block 13, the inner wall fixed mounting of die holder 3 has hydro-cylinder 10, the output of hydro-cylinder 10 and the tip key fixed connection of cutter 11, the outside cover that cutter 11 is close to with hydro-cylinder 10 is equipped with spring housing 12, be equipped with the attenuator in the spring housing 12, cutter 11 sets up in the outside of mould groove 8, the one side that cutter 11 kept away from mould groove 8 is equipped with guide block 13, form the logical groove that is used for the hot-cut between mould groove 8 and the guide block 13, lead to the groove to extend to the end position fixed mounting of upper die holder 2 has rubber cushion 14.

It should be noted that, after the plastic part is subjected to pressure maintaining, the oil cylinder 10 drives the cutter 11 to move the cutter 11 to the plastic part of the pouring opening 9 and the die groove 8 through the guide block 13, the guide block 13 is in contact with the spring sleeve 12, after the gate cut surface is formed, the cutter 11 rebounds to the original position, and the top position of the cutter 11 can be protected by the arrangement of the rubber cushion block 14.

As a preferred scheme, still further, the cooling module includes honeycomb duct 15, water tank 16 and bi-directional pump 17, the cooling chamber 32 of intercommunication has been seted up to three lateral surface that pouring mouth 9 was kept away from to mould groove 8, cooling chamber 32 keeps away from the one side intercommunication of pouring mouth 9 has honeycomb duct 15, the one end of honeycomb duct 15 is linked together with the one end of bi-directional pump 17, the one end of bi-directional pump 17 is linked together with water tank 16, water tank 16 passes through support 33 and installs the side at mainframe box 1, bi-directional pump 17 installs the top at water tank 16.

It should be noted that, the cooling cavity 32 covers three sides of the mold groove 8, the two-way pump 17 pumps the cooling water source in the water tank 16 into the cooling cavity 32 through the flow guide pipe 15, the two-way pump 17 can realize two-way adjustment, and synchronously realize water pumping and water delivery actions, so that the cooling water source in the cooling cavity 32 is quickly replaced, the cooling efficiency is further improved, the cooling uniformity of the plastic part is effectively ensured, and the production quality of the plastic part is improved.

As a preferred scheme, still further, the centre gripping module includes lead screw slip table 18, electric putter 19, arm 20 and electronic clamping jaw 21, lead screw slip table 18 is installed to the inner wall of mainframe box 1, fixedly connected with electric putter 19 on the mobile end of lead screw slip table 18, the bottom position rotation of electric putter 19 is connected with arm 20, the one end that arm 20 kept away from electronic clamping jaw 21 rotates and is connected with electronic clamping jaw 21.

It should be noted that, the motor of lead screw slip table 18 drives its mobile terminal lateral shifting, and electric putter 19 drive electric clamping jaw 21 is close to mould groove 8, and electric clamping jaw 21 will pour the mouth of a river on the mouth of a river 9 centre gripping to collection case two 28, avoids remaining mouth of a river to fall to mainframe box 1 in, causes the mouth of a river to pile up, influences other processing procedures, through setting up fixture, can make mainframe box 1 keep in cleaner state, also be convenient for the concentrated collection of remaining mouth of a river, labour saving and time saving.

As a preferred scheme, still further, the transmission module includes drive roll 22, servo motor 23, conveyer 24, chain wheelset and a plurality of driven voller 25, drive roll 22 and a plurality of driven voller 25 are installed through the bearing to the top of mainframe box 1, drive roll 22 and a plurality of driven voller 25 are covered and are had same conveyer 24, pass through between two adjacent roller sets chain wheelset transmission connection, the output of servo motor 23 and the one end fixed connection of drive roll 22.

It should be noted that, the servo motor 23 drives the driving roller 22 to rotate, and the driven rollers 25 synchronously rotate under the transmission of the chain wheel set, so as to drive the conveying belt 24 to convey the molded plastic part, and the molded plastic part is conveyed into the first material collecting box 27, so that the manual collection of the finished plastic part is avoided, and the working efficiency is improved.

As a preferred scheme, still further, the liftout module includes thimble 29, electric putter 19 and kicking block 30, two electric putter 19 is all fixed mounting on the inner wall of mainframe box 1, two electric putter 19 keeps away from the equal fixedly connected with thimble 29 of one end of mainframe box 1, the blown down tank 31 that a set of symmetry set up has been run through to the side that die holder 3 is opposite with thimble 29, two blown down tank 31 all is linked together with mould groove 8, two the one end that thimble 29 extended to in two blown down tanks 31 is fixedly connected with kicking block 30 respectively.

It should be noted that, after the plastic part is cooled and formed, the electric push rod 19 drives the ejector pin 29, and the ejector block 30 makes the plastic part in the mold groove 8 be lifted upwards, so that the plastic part adhered in the mold groove 8 falls off on the lower conveyor belt 24, thereby avoiding manual material removal and improving the material removal efficiency of the plastic part.

As a preferred scheme, still further, the outside of mainframe box 1 is equipped with control system, control system includes touch-sensitive screen 26, be equipped with the controller in the touch-sensitive screen 26, all be equipped with the sensor in transmission module, punching press module, hot cut module, liftout module and the cooling module, touch-sensitive screen 26 respectively with transmission module, punching press module, hot cut module, liftout module and cooling module electric connection.

The control system controls the closing of the stamping module, the fusing time of the hot cutting module, the transmission speed of the transmission module, the clamping process of the clamping module and the cooling efficiency of the cooling module, and all module units are mutually matched, so that the molding period of the plastic part is effectively shortened, and the production efficiency of the plastic part is improved.

As a preferable scheme, a first collecting box 27 and a second collecting box 28 are respectively arranged at the discharge end of the transmission module and at the side of the main case 1.

The first collecting box 27 is used for collecting the molding plastic parts, and the second collecting box 28 is used for collecting the water gap.

Working principle: when the device is used, the air cylinder 6 drives the upper die holder 2 to be forwards attached to the lower die holder 3 to finish the closing of a die, then the material is injected into the die groove 8 through the pouring opening 9, then the pressure maintaining process is carried out, the cutter separates the material of the pouring opening 9 from a finished product of a plastic part in the die groove 8 when the pressure maintaining is finished, then the cooling stage of the plastic part is carried out, the cooling cavity 32 covers three side surfaces of the die groove 8, the two-way pump 17 pumps a cooling water source in the water tank 16 into the cooling cavity 32 through the flow guide pipe 15, the two-way pump 17 can realize two-way regulation, and the water pumping and water supplying actions are synchronously realized, so that the cooling water source in the cooling cavity 32 is quickly replaced, the cooling efficiency is further improved, the cooling uniformity of the plastic part is effectively ensured, and the production quality of the plastic part is improved;

after the pouring opening 9 and the plastic part cutting gate interface in the mold groove 8 are shaped, the control system controls the cutter 11 to start the backspacing action, and the water gap cutting action and the cooling process are synchronously carried out;

after the plastic part is cooled and molded, the electric push rod 19 drives the ejector pin 29, the ejector block 30 enables the plastic part in the mold groove 8 to be ejected upwards, so that the plastic part adhered in the mold groove 8 falls off on the lower conveying belt 24, manual stripping is avoided, and the stripping efficiency of the plastic part is improved;

the motor of the screw rod sliding table 18 drives the movable end of the screw rod sliding table to transversely move, the electric push rod 19 drives the electric clamping jaw 21 to be close to the die groove 8, the electric clamping jaw 21 clamps the water gap on the pouring port 9 to the second collecting box 28, the phenomenon that the residual water gap falls into the main machine box 1 to cause water gap accumulation and affect other processing procedures is avoided, the main machine box 1 can be kept in a cleaner state by arranging the clamping mechanism, the centralized collection of the residual water gap is also facilitated, and time and labor are saved;

simultaneously, servo motor 23 drive roll 22 rotates, and under the transmission of chain wheelset, a plurality of driven voller 25 synchronous rotation to drive conveyer 24 carries out the material work of conveying to the shaping and moulds the piece, and the shaping is moulded the piece and is passed through the transmission and is got in material collection case one 27, avoids the manual work to collect the finished product of moulding, has improved work efficiency.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention; various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Automatic hot punching device of in-mould mouth of a river, its characterized in that: including mainframe box (1), the top of mainframe box (1) is equipped with transmission module, transmission module top is equipped with punching press module, punching press module's top is equipped with the centre gripping module, wherein punching press module includes upper die base (2), die holder (3), terrace die (4), hydraulic guide bar (5) and cylinder (6), one side inner wall fixed mounting of mainframe box (1) has die holder (3), and the inner wall fixed mounting of opposite side has two sets of hydraulic guide bars (5), and one side fixed mounting that two sets of hydraulic guide bars (5) are relative with die holder (3) has same upper die base (2), the tip key of upper die base (2) is with the output fixed connection of cylinder (6), punch (4) are installed through the welding in the middle part position of upper die base (2), die groove (8) with terrace die (4) footpath looks adaptation have been seted up to one side that die holder (3) are relative, pouring mouth (9) are run through to be seted up with die groove (8), die holder (3) and cooling module.

2. The in-mold nozzle automatic hot stamping device according to claim 1, wherein: the hot cutting module comprises an oil cylinder (10), a cutter (11), a spring sleeve (12) and a guide block (13), wherein the oil cylinder (10) is fixedly arranged on the inner wall of the lower die holder (3), the output end of the oil cylinder (10) is fixedly connected with the end key of the cutter (11), the spring sleeve (12) is sleeved on the outer side, close to the oil cylinder (10), of the cutter (11), a damper is arranged in the spring sleeve (12), the cutter (11) is arranged on the outer side of the die groove (8), the guide block (13) is arranged on one side, far away from the die groove (8), of the cutter (11), a through groove for hot cutting is formed between the die groove (8) and the guide block (13), and the through groove extends to the end position of the upper die holder (2) to be fixedly provided with a rubber cushion block (14).

3. The in-mold nozzle automatic hot stamping device according to claim 1, wherein: the cooling module comprises a flow guide pipe (15), a water tank (16) and a two-way pump (17), wherein the mold groove (8) is far away from the three outer side surfaces of the pouring opening (9) and is provided with a cooling cavity (32), one side of the cooling cavity (32) far away from the pouring opening (9) is communicated with the flow guide pipe (15), one end of the flow guide pipe (15) is communicated with one end of the two-way pump (17), one end of the two-way pump (17) is communicated with the water tank (16), the water tank (16) is arranged at the side of the main case (1) through a bracket (33), and the two-way pump (17) is arranged above the water tank (16).

4. The in-mold nozzle automatic hot stamping device according to claim 1, wherein: the clamping module comprises a screw rod sliding table (18), an electric push rod (19), a mechanical arm (20) and an electric clamping jaw (21), wherein the screw rod sliding table (18) is installed on the inner wall of the main machine box (1), the electric push rod (19) is fixedly connected to the moving end of the screw rod sliding table (18), the mechanical arm (20) is rotationally connected to the bottom position of the electric push rod (19), and one end, far away from the electric clamping jaw (21), of the mechanical arm (20) is rotationally connected with the electric clamping jaw (21).

5. The in-mold nozzle automatic hot stamping device of claim 4, wherein: the transmission module comprises a driving roller (22), a servo motor (23), a conveying belt (24), a chain wheel set and a plurality of driven rollers (25), wherein the driving roller (22) and the driven rollers (25) are arranged above the main case (1) through bearings, the driving roller (22) and the driven rollers (25) are covered with the same conveying belt (24), two adjacent groups of rollers are in transmission connection through the chain wheel set, and the output end of the servo motor (23) is fixedly connected with one end of the driving roller (22).

6. The in-mold nozzle automatic hot stamping device of claim 5, wherein: the ejector module comprises ejector pins (29), electric push rods (19) and ejector blocks (30), wherein the electric push rods (19) are fixedly installed on the inner wall of a main machine box (1), the ejector pins (29) are fixedly connected to one ends, far away from the main machine box (1), of the electric push rods (19), a group of symmetrically arranged discharge grooves (31) are formed in one side, opposite to the ejector pins (29), of the lower die holder (3), the two discharge grooves are communicated with the die grooves (8), and the ejector pins (29) extend to one ends, in the two discharge grooves (31), of the ejector blocks (30) are fixedly connected to one ends, respectively.

7. The in-mold nozzle automatic hot stamping device of claim 6, wherein: the outside of mainframe (1) is equipped with control system, control system includes touch-sensitive screen (26), be equipped with the controller in touch-sensitive screen (26), all be equipped with the sensor in movable module, punching press module, hot cutting module, liftout module and the cooling module, touch-sensitive screen (26) respectively with transmission module, punching press module, hot cutting module, liftout module and cooling module electric connection.

8. The in-mold nozzle automatic hot stamping device of claim 7, wherein: and a first collecting box (27) and a second collecting box (28) are respectively arranged at the discharge end of the transmission module and the side of the main box (1).