CN109016364B - Loudspeaker box shell injection molding blanking die - Google Patents
Loudspeaker box shell injection molding blanking die Download PDFInfo
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- CN109016364B CN109016364B CN201810632084.9A CN201810632084A CN109016364B CN 109016364 B CN109016364 B CN 109016364B CN 201810632084 A CN201810632084 A CN 201810632084A CN 109016364 B CN109016364 B CN 109016364B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0046—Details relating to the filling pattern or flow paths or flow characteristics of moulding material in the mould cavity
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses an injection molding blanking die for a sound box shell, which has the technical scheme that the injection molding blanking die comprises a sound box shell, a female die arranged above the sound box shell, an upper die holder arranged on the female die and a fixed plate arranged on the upper die holder, wherein an uneven blanking device communicated with an upper die plate and the female die is arranged in the fixed plate, and the uneven blanking device comprises a blanking shell, an uneven blanking device arranged at the bottom of the inner side of the blanking shell and a plurality of blanking pipes arranged at the bottom of the blanking shell; the rotating blade is provided with a driving circuit for driving the driving assembly to rotate, and the driving circuit comprises a first resistor, a first time relay connected with the first resistor and a second time relay connected with the first resistor in parallel. The invention solves the technical problem of how to achieve relatively similar filling speed to reduce the internal stress when the components of different parts of the sound box shell are not uniform.
Description
Technical Field
The invention relates to the field of workpiece injection molding, in particular to an injection molding and blanking die for a sound box shell.
Background
An injection mold is a tool for producing plastic products; and is also a tool for giving the plastic product complete structure and accurate dimension. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.
In the prior art, the chinese patent with the reference number CN202895568U, which is a grant, discloses a plastic product molding machine, which includes a worktable, a frame and a rack, the frame is installed on the worktable, a bone injection mold is installed on the frame, the bone-shooting injection mold comprises a lower mold base and an upper mold base which is fixed on a frame, is linked with an air cylinder and moves up and down along the frame, the lower mold base is horizontally and vertically moved relative to the vertical direction of the upper mold base through a mold moving air cylinder, the bone-shooting injection mold is connected with a mold adjusting device and a blanking glue-shooting device, the blanking glue-shooting device is connected with the upper mold base, the blanking glue-shooting device comprises a blanking hopper, a glue-shooting device, an injection oil cylinder and a heating device, the blanking glue-shooting device is also provided with a filtering device, the filtering device can filter the plastic poured into the discharging hopper, and the filtered plastic is heated and hot-melted by the heating device and then is injected onto the blades of the lower die holder by the glue injection device. The utility model provides the high purity of plastic behind the hot melt reduces the pollution of impurity, has improved the quality of the product of production.
When the loudspeaker box shell is manufactured by injecting molten plastic into the male die and the female die, because the amount of the plastic between different parts of the loudspeaker box shell is not uniform, when the loudspeaker box shell is processed, if the molten plastic is injected according to the same speed, the filling speeds of the plastic to different parts of the die cavity are not equal, so that the internal stress of the loudspeaker box shell after injection molding can be generated due to uneven density in the loudspeaker box shell processing process, and the quality of a product is reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an injection molding and blanking die for a sound box shell, which ensures that parts with different densities have relatively similar filling speeds by non-uniform blanking when components of different parts of the sound box shell are non-uniform, so as to reduce internal stress of the sound box shell after processing is finished and improve the technical effect of processing quality.
In order to achieve the purpose, the invention provides the following technical scheme: an injection molding blanking die for a sound box shell comprises a sound box shell, a female die, an upper die base and a fixed plate, wherein the female die is arranged above the sound box shell, the upper die base is arranged on the female die, the fixed plate is arranged on the upper die base, an uneven blanking device communicated with an upper die plate and the female die is arranged in the fixed plate, the uneven blanking device comprises a blanking shell, an uneven blanking device and a plurality of blanking pipes, the uneven blanking device is arranged at the inner bottom of the blanking shell, the plurality of blanking pipes are arranged at the bottom of the blanking shell, the uneven blanking device comprises a driving assembly, a transmission assembly connected with the driving assembly, a rotating rod and a plurality of rotating blades, the rotating blades are arranged on the transmission assembly and; the rotating blade is provided with a driving circuit for driving the driving assembly to rotate, the driving circuit comprises a first resistor, a first time relay connected with the first resistor and a second time relay connected with the first resistor in parallel, the first time relay comprises a first relay coil, a first normally open contact and a first normally closed contact, the second time relay comprises a second relay coil, a second normally open contact and a second normally closed contact, two ends of the second relay coil are coupled with the first resistor in parallel, the first relay coil is coupled with the first resistor in series, the first normally closed contact is coupled in series, the second normally open contact is coupled with the first normally closed contact in series, the second normally closed contact is coupled with the second relay coil in series, the first normally open contact is coupled with the second normally closed contact in series, one end of the first resistor is coupled with a power supply, one end of the second normally open contact is grounded, the first relay coil is connected with a second electromagnetic relay, the second electromagnetic coil is connected with a third electromagnetic relay, the second electromagnetic relay comprises a second electromagnetic coil and a second normally open contact, the third electromagnetic relay comprises a third electromagnetic coil and a third electromagnetic normally open contact, and two ends of the second electromagnetic normally open contact are coupled with the second normally open contact in parallel; the second electromagnetic coil is coupled with the first relay coil in series, the third electromagnetic coil is coupled with the second relay coil in series, two ends of the third electromagnetic normally-open contact are coupled with the first normally-open contact in parallel, the driving circuit is electrically connected with a control circuit, and the control circuit comprises a first button, a first electromagnetic relay and a fourth time relay; the first electromagnetic relay comprises a first electromagnetic normally-open contact and a first electromagnetic coil, and the fourth time relay comprises a fourth relay coil, two fourth normally-closed contacts and a fourth normally-open contact; the first electromagnetic coil is coupled with the first button in series, one fourth normally-closed contact is coupled with the first electromagnetic coil in series, the other end of the fourth normally-closed contact is grounded, and one end of the first button is connected with a power supply; first normally open contact and first button parallel arrangement, fourth relay coil and first normally open contact series coupling, another fourth normally closed contact and fourth relay coil series coupling, the power is connected to the one end of first normally open contact, the one end ground connection setting of another fourth normally closed contact, fourth normally open contact and second electromagnetism normally open contact parallel coupling.
By adopting the technical scheme, when the loudspeaker box shell is subjected to injection molding, the injection molded plastic is discharged through the discharging shell, after a first button is pressed, the first electromagnetic coil is electrified to control the first electromagnetic normally-open contact to be disconnected, the fourth electromagnetic coil is electrified and starts to time, the time is counted, after the time is counted, the two fourth normally-closed contacts are disconnected, the first normally-open contact is closed, the second electromagnetic coil controls the third electromagnetic normally-open contact to be closed, the driving assembly works to drive the driving assembly to move, the driving assembly moves and drives the rotating rod to rotate, the rotating rod drives the rotating blade to rotate, meanwhile, the first relay coil starts to time, after the time is counted, the first normally-closed contact is disconnected, the first normally-open contact is closed, self-locking is realized through the third coil and the third normally-open contact, the second relay coil is electrified and starts to time, and at the moment, the driving assembly is in a high-speed running state, the second normally closed contact disconnection is controlled after the timely end of second relay coil, and second normally open contact is closed, and second solenoid gets electric and control second electromagnetism normally open contact closed, and drive assembly is in low-speed running state, so moves repeatedly, drives the inhomogeneous unloading of rotor blade through drive assembly like this and guarantees that the position of different density has more similar filling speed to this reduces the inside internal stress after the processing of audio amplifier shell is accomplished.
The invention is further configured to: the position department that the unloading shell corresponds drive assembly and drive assembly has set firmly the connecting block, and drive assembly locates in the connecting block, drive assembly includes vertical setting and rotates the transfer line of connection in the connecting block, sets firmly first bevel gear in the transfer line bottom and sets firmly the second bevel gear that is close to first bevel gear one side at the dwang, first bevel gear and second bevel gear intermeshing.
Through adopting above-mentioned technical scheme, the connecting block plays the effect of protection to drive assembly, and the drive transfer line of drive assembly work rotates, and the transfer line drives second bevel gear through first bevel gear and rotates to realize the rotation of dwang, drive assembly and drive assembly all are located one side of rotating vane, can not influence the unloading of plastics.
The invention is further configured to: the drive assembly is arranged in the connecting block and comprises a drive motor, a first gear and a second gear, wherein the drive motor is arranged on the inner side wall of the discharging shell, the first gear is fixedly arranged on a rotating shaft of the drive motor, the second gear is fixedly arranged on the transmission rod, and the first gear is meshed with the second gear.
Through adopting above-mentioned technical scheme, driving motor drives the transfer line through the cooperation of first gear and second gear and rotates, and is stable high-efficient, and driving motor can locate the bottom assurance driving motor's of unloading shell stability.
The invention is further configured to: the cross section of the rotating blade is arc-shaped.
By adopting the technical scheme, the cross section of the rotating blade is arc-shaped, so that the rotating blade can stir plastics more conveniently and stably in the rotating process.
The invention is further configured to: the rotating blade is provided with a plurality of vent holes.
Through adopting above-mentioned technical scheme, prevent plastics bubble appearance in the unloading through setting up a plurality of air vents.
The invention is further configured to: and the inner side wall of the connecting block is fixedly provided with a heat insulation block.
Through adopting above-mentioned technical scheme, prevent through the heat insulating block that driving motor receives the heat too much and influence driving motor's operation.
The invention is further configured to: the loudspeaker box comprises a loudspeaker box shell, a loudspeaker box shell and a blanking pipe, wherein the loudspeaker box shell is provided with a sound box shell, the loudspeaker box shell is provided with a sound box shell.
By adopting the technical scheme, the three blanking pipes are used for blanking the middle part of the loudspeaker box shell, the rest one blanking pipe is used for blanking one side of the loudspeaker box shell, and the inner diameter of the blanking pipe right above the middle part of the loudspeaker box shell is slightly larger than the inner diameter of the blanking pipe above one side of the loudspeaker box shell so as to ensure that the blanking of each part of the loudspeaker box shell is uniform.
The invention is further configured to: two horizontally arranged support rods are fixedly arranged on two sides of the blanking shell, the support rods are inserted into the fixed plate and are attached to the inner side wall of the fixed plate, and the two support rods are parallel to each other and are not located at the same transverse position.
Through adopting above-mentioned technical scheme, support the unloading shell through two bracing pieces, prevent that the unloading shell from taking place to rock through setting up the bracing piece in the lateral position of difference.
The invention is further configured to: a plurality of supporting columns are fixedly arranged between the upper die base and the fixed plate, and sleeves are fixedly arranged at the positions of the fixed plate and the upper die base, which correspond to the supporting columns.
Through adopting above-mentioned technical scheme, support upper die base and fixed the supporting through the support column, the sleeve pipe can make fixed plate and upper die base and support column hug closely to make fixed stable.
The invention is further configured to: the drive circuit still includes third time relay, third time relay includes third relay coil and third normally closed contact, and third relay coil is connected with driving motor series coupling, the normally closed contact is connected with third relay coil series coupling for the third time.
By adopting the technical scheme, the blanking time is timed by arranging the third time relay, and when the blanking is finished after the timing is finished, the waste of the electric energy of the driving assembly is reduced.
In summary, compared with the prior art, the invention has the following beneficial effects: according to the invention, when the components of different parts of the sound box shell are not uniform, the parts with different densities have relatively similar filling speeds through non-uniform blanking, so that the internal stress of the processed sound box shell is reduced, and the technical effect of processing quality is improved.
Drawings
FIG. 1 is a schematic diagram of background art;
FIG. 2 is a schematic view of the overall structure of the embodiment;
FIG. 3 is an exploded view of the overall structure of the embodiment;
FIG. 4 is a schematic structural view of the uneven blanking device in the embodiment;
FIG. 5 is a schematic view showing the structure of the driving assembly and the transmission assembly in the embodiment;
FIG. 6 is a schematic diagram of a control circuit according to an embodiment;
FIG. 7 is a diagram illustrating a structure of a driving circuit according to an embodiment.
In the figure: 1. a female die; 2. an upper die holder; 21. a support pillar; 22. a sleeve; 3. a fixing plate; 31. a support plate; 4. an uneven blanking device; 41. blanking shell; 411. a heat insulation block; 42. a drive assembly; 421. a drive motor; 422. a first gear; 423. a second gear; 43. a transmission assembly; 431. a transmission rod; 432. a first bevel gear; 433. a second bevel gear; 44. rotating the rod; 45. a rotor blade; 451. a vent hole; 46. a discharging pipe; 47. connecting blocks; 48. a support bar; 5. a drive circuit; r1, a first resistor; KT1, first relay coil; KT1, a first normally closed contact; KT2, second normally open contact; KA2 and a second electromagnetic normally open contact; KT4, fourth normally open contact; KA2, a second electromagnetic coil; KT2, second relay coil; KT2, a second normally closed contact; KT1, first normally open contact; KA3 and a third electromagnetic normally open contact; KA3, a third electromagnetic coil; KT3, third relay coil; KT3, third normally closed contact; 51. a control circuit; k1, first button; KA1, a first electromagnetic coil; KT4, fourth normally closed contact; KA1, a first electromagnetic normally open contact; KT4, fourth relay coil; 6. a male die; 61. a sound box shell.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Example (b):
an injection molding and blanking die for a sound box shell is shown in figures 2 and 3 and comprises a female die 1, an upper die base 2, a fixing plate 3, an uneven blanking device 4 and a driving circuit 5. Upper die base 2 is located directly over die 1 and die 1 passes through a plurality of bolted connection with the middle part of upper die base 2, and fixed plate 3 sets up directly over upper die base 2, through bolted connection between fixed plate 3 and the upper die base 2, and the upper portion of fixed plate 3 has set firmly backup pad 31, and backup pad 31 level is located directly over fixed plate 3 and fixed plate 3 bolted connection. The four corners position department of backup pad 31, fixed plate 3 and upper die base 2 all inserts and is equipped with support column 21, and the position department that fixed plate 3 and upper die base 2 correspond support column 21 has all set firmly sleeve pipe 22, and sleeve pipe 22 can make fixed plate 3 and upper die base 2 hug closely with support column 21 to make fixed stable.
As shown in fig. 4 and 5, the uneven discharging device 4 includes a discharging shell 41, a driving assembly 42 disposed at the bottom of the inner side of the discharging shell 41, a transmission assembly 43 connected to the driving assembly 42, a rotating rod 44 disposed on the transmission assembly 43 and disposed in a discharging pipe 46, a plurality of rotating blades 45 disposed on the rotating rod 44, and a plurality of discharging pipes 46 disposed at the bottom of the discharging shell 41. The blanking shell 41 is embedded in the fixing plate 3, the upper part of the blanking shell 41 is fixedly provided with a cylindrical blanking pipe 46 communicated with the upper part of the blanking shell, the outer side of the rotating blade 45 is attached to the inner side wall of the blanking pipe 46, and the driving circuit 5 is arranged on the driving assembly 42. The blanking shell 41 is fixedly provided with a connecting block 47 at the position corresponding to the driving component 42 and the transmission component 43, and the transmission component 43 is arranged in the connecting block 47, so that the connecting block 47 plays a role in protecting the driving component 42 and the transmission component 43.
Two horizontally arranged support rods 48 are fixedly arranged on two sides of the blanking shell 41, the support rods 48 are inserted on the fixed plate 3 and are adhered to the inner side wall of the fixed plate 3, and the two support rods 48 are arranged at different transverse positions. The feeding shell 41 is supported by the two support rods 48, and the feeding shell 41 is prevented from shaking by arranging the support rods 48 at different transverse positions.
The transmission assembly 43 comprises a transmission rod 431, a first bevel gear 432 and a second bevel gear 433, the transmission rod 431 is vertically arranged and is connected in the connecting block 47, the first bevel gear 432 is horizontally and fixedly arranged at the bottom of the transmission rod 431, the second bevel gear 433 is fixedly arranged at one side of the rotating rod 44 close to the transmission rod 431, and the first bevel gear 432 and the second bevel gear 433 are meshed with each other. Therefore, the driving transmission rod 431 is driven by the driving component 42 to rotate, the transmission rod 431 drives the second bevel gear 433 to rotate through the first bevel gear 432, so that the rotating rod 44 rotates, the driving component 43 and the driving component 42 are both positioned on one side of the rotating blade 45, and the blanking of plastics cannot be influenced.
The driving assembly 42 includes a driving motor 421, a first gear 422, and a second gear 423. The driving motor 421 is vertically arranged and fixedly arranged on the side wall of the connecting block 47, the first gear 422 is horizontally arranged and fixedly arranged on the rotating shaft of the driving motor 421, the second gear 423 is horizontally arranged and fixedly arranged on the top of the transmission rod 431, and the first gear 422 and the second gear 423 are mutually meshed. Like this driving motor 421 drives the transfer line 431 through the cooperation of first gear 422 and second gear 423 and rotates, and is stable high-efficient, and driving motor 421 can locate the bottom of unloading shell 41 in order to guarantee driving motor 421's stability.
The cross section of each rotor blade 45 is circular arc-shaped and the side wall of the rotor blade 45 is provided with a plurality of vent holes 451. The rotating blades 45 arranged in the circular arc ensure that plastic is stirred more conveniently and stably, and a plurality of vent holes 451 are arranged to prevent the plastic from generating bubbles during blanking.
The heat insulation block 411 is fixedly arranged on the inner side wall of the connecting block 47, and the heat insulation block 411 can protect the driving motor 421 to prevent the driving motor 421 from being affected by heat.
The four blanking pipes 46 are divided into two groups, the three blanking pipes 46 are uniformly arranged and arranged right above the middle part of the sound box shell, the rest blanking pipes 46 are positioned right above one side of the upper part of the sound box shell, and the inner diameter of the blanking pipe 46 positioned right above the middle part of the sound box shell is larger than that of the blanking pipe 46 positioned above one side of the sound box shell. The three blanking pipes 46 are used for blanking the middle part of the loudspeaker box shell, the rest blanking pipe 46 is used for blanking one side of the loudspeaker box shell, and the inner diameter of the blanking pipe 46 positioned right above the middle part of the loudspeaker box shell is slightly larger than the inner diameter of the blanking pipe 46 positioned above one side of the loudspeaker box shell so as to ensure that blanking of each part of the loudspeaker box shell is uniform.
As shown in fig. 6 and 7, the driving circuit 5 includes a first resistor R1, a first time relay connected to the first resistor R1, and a second time relay connected in parallel to the first resistor R1, the first time relay includes a first relay coil KT1, a first normally-open contact KT1, and a first normally-closed contact KT1, the second time relay includes a second relay coil KT2, a second normally-open contact KT2, and a second normally-closed contact KT2, both ends of the second relay coil KT2 are coupled in parallel to the first resistor R1, the first relay coil KT1 is coupled in series to the first resistor R1, the first normally-closed contact KT1 is coupled in series, the second normally-open contact KT2 is coupled in series to the first normally-closed contact KT1, the second normally-closed contact KT2 is coupled in series to the second relay coil KT2, the first normally-open contact KT1 is coupled in series to the normally-closed contact 2, one end of the first resistor R1 is coupled to the ground, one end of the second normally-open contact KT2 is provided, be connected with second electromagnetic relay on the first relay coil KT1, be connected with third electromagnetic relay on the second solenoid KA2, second electromagnetic relay includes second solenoid KA2 and second normally open contact KT2, and third electromagnetic relay includes third solenoid KA3 and third electromagnetism normally open contact KA3, and the both ends and the second normally closed contact KT2 of second electromagnetism normally open contact KA2 are coupled in parallel. The second electromagnetic coil KA2 is coupled with the first relay coil KT1 in series, the third electromagnetic coil KA3 is coupled with the second relay coil KT2 in series, two ends of the third electromagnetic normally-open contact KA3 are coupled with the first normally-open contact KT1 in parallel, a third time relay is connected to the driving motor 421, the third time relay comprises a third relay coil KT3 and a third normally-closed contact KT3, the third relay coil KT3 is coupled with the driving motor 421 in series, and the third normally-closed contact is coupled with the third relay coil KT3 in series. In this way, the third time relay is arranged to time the blanking time, and when the blanking is finished after the timing is finished, the waste of the electric energy of the driving assembly 42 is reduced.
The driving circuit 5 is electrically connected with a control circuit 51, and the control circuit 51 comprises a first button K1, a first electromagnetic relay and a fourth time relay; the first electromagnetic relay comprises a first electromagnetic normally-open contact KA1 and a first electromagnetic coil KA1, and the fourth time relay comprises a fourth relay coil KT4, two fourth normally-closed contacts KT4 and a fourth normally-open contact KT 4; the first electromagnetic coil KA1 is coupled with the first button K1 in series, wherein a fourth normally closed contact KT4 is coupled with the first electromagnetic coil KA1 in series, the other end of the fourth normally closed contact KT 3526 is grounded, and one end of the first button K1 is connected with a power supply; first normally open contact KT1 and first button K1 parallel arrangement, fourth relaying coil KT4 and first normally open contact KT1 series coupling, another fourth normally closed contact KT4 and fourth relaying coil KT4 series coupling, the power is connected to first normally open contact KT 1's one end, another fourth normally closed contact KT 4's one end ground connection setting, fourth normally open contact KT4 and second electromagnetism normally open contact KA2 parallel coupling.
Thus, when the sound box shell is subjected to injection molding, injection-molded plastic is blanked through the blanking shell 41, after a first button K1 is pressed, the first electromagnetic coil KA1 is electrified to control the first electromagnetic normally-open contact KA1 to be disconnected, the fourth relay coil KT4 is electrified and starts to time, after the time is counted, the two fourth normally-closed contacts KT4 are disconnected, the first normally-open contact KT1 is closed, the second electromagnetic coil KA2 controls the third electromagnetic normally-open contact KA3 to be closed, the driving assembly 42 works to drive the transmission assembly 43 to move, the transmission assembly 43 moves and drives the rotating rod 44 to rotate, the rotating rod 44 drives the rotating blade 45 to rotate, meanwhile, the first relay coil KT1 starts to time, after the time is counted, the first normally-open contact KT1 is disconnected, the first normally-closed contact KT1 is closed, self-locking is realized through the third electromagnetic coil KA3 and the third electromagnetic normally-open contact KA3, the second relay coil KT2 is electrified and starts to time, at this moment, the driving assembly 42 is in a high-speed operation state, the second relay coil KT2 controls the disconnection of the second normally closed contact KT2 after timely finishing, the second normally open contact KT2 is closed, the second electromagnetic coil KA2 is electrified and controls the second electromagnetic normally open contact KA2 to be closed, the driving assembly 42 is in a low-speed operation state, so the repeated operation is realized, the parts with different densities are ensured by driving the uneven blanking of the rotating blades 45 through the driving assembly 42, the filling speed is similar, and the internal stress inside the sound box shell after the processing is finished is reduced.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (7)
1. The utility model provides a sound box shell unloading mould of moulding plastics for make sound box shell, sound box shell unloading mould of moulding plastics is including die (1) of locating sound box shell top, upper die base (2) on locating die (1) and fixed plate (3) on locating upper die base (2), its characterized in that: the upper die holder (2) is arranged above the female die (1) and the female die (1) is connected with the middle part of the upper die holder (2), the fixed plate (3) is arranged above the upper die holder (2), the fixed plate (3) is connected with the upper die holder (2) through bolts, the upper part of the fixed plate (3) is fixedly provided with the supporting plate (31), the supporting plate (31) is horizontally arranged above the fixed plate (3) and is connected with the fixed plate (3) through bolts, the supporting plate (31), the supporting columns (21) are respectively inserted at the four corners of the fixed plate (3) and the upper die holder (2), the sleeves (22) are respectively fixedly arranged at the positions of the fixed plate (3) and the upper die holder (2) corresponding to the supporting columns (21), and the sleeves (22) can enable the fixed plate (3) and the upper die holder (2) to be tightly attached to the supporting columns (21), an uneven blanking device (4) communicated with the upper die holder (2) and the female die (1) is arranged in the fixed plate (3);
the uneven blanking device (4) comprises a blanking shell (41), a driving component (42) arranged at the inner bottom of the blanking shell (41), a transmission component (43) connected with the driving component (42), a rotating rod (44) arranged on the transmission component (43) and arranged in a first blanking tube (46), a plurality of rotating blades (45) arranged on the rotating rod (44) and a plurality of first blanking tubes (46) arranged at the bottom of the blanking shell (41), wherein the blanking shell (41) is embedded in a fixed plate (3), a second blanking tube communicated with the upper part of the blanking shell (41) is fixedly arranged on the upper part of the blanking shell, the outer side of the rotating blade (45) is attached to the inner side wall of the first blanking tube (46), a driving circuit (5) is connected onto the driving component (42), a connecting block (47) is fixedly arranged at the position of the blanking shell (41) corresponding to the driving component (42) and the transmission component (43), and the transmission component (43) is arranged in the connecting block (47), the driving component (42) is arranged in the connecting block (47) and is positioned in a compartment different from the transmission component (43), and the connecting block (47) protects the driving component (42) and the transmission component (43);
a horizontally arranged support rod is fixedly arranged on the side surface of the blanking shell (41), the support rod is inserted into the fixed plate (3) and is attached to the inner side wall of the fixed plate (3), and the support rod is arranged at a transverse position to support the blanking shell (41) and prevent the blanking shell (41) from shaking;
when the loudspeaker box shell is subjected to injection molding, injection-molded plastic is subjected to blanking through the blanking shell (41), and the driving assembly (42) drives the blades (45) to rotate for uneven blanking so as to ensure that parts with different densities have relatively similar filling speeds, so that internal stress of the loudspeaker box shell after processing is reduced;
the transmission assembly (43) comprises a transmission rod (431) which is vertically arranged and is rotatably connected in the connecting block (47), a first bevel gear (432) fixedly arranged at the bottom of the transmission rod (431), and a second bevel gear (433) fixedly arranged on one side, close to the first bevel gear (432), of the rotation rod (44), wherein the first bevel gear (432) and the second bevel gear (433) are meshed with each other;
the driving assembly (42) comprises a driving motor (421) which is vertically arranged and fixedly arranged on the inner side wall of the connecting block (47), a first gear (422) which is horizontally arranged and fixedly arranged on a rotating shaft of the driving motor (421) and a second gear (423) which is horizontally arranged and fixedly arranged on the top of the transmission rod (431), the first gear (422) and the second gear (423) are meshed with each other, the driving motor (421) drives the transmission rod (431), a first bevel gear (432) at the bottom of the transmission rod (431), a second bevel gear (433) meshed with the first bevel gear (432) and a rotating blade (45) laterally connected with the second bevel gear (433) to rotate through the matching of the first gear (422) and the second gear (423) which are meshed with each other above, and the driving motor (421) can be arranged at the bottom of the blanking shell (41) to ensure the stability of the driving motor (421), the transmission assembly (43) and the driving assembly (42) are both positioned on one side of the rotating blade (45), and the blanking of plastics cannot be influenced.
2. The loudspeaker box shell injection molding blanking die of claim 1, characterized in that: the drive circuit (5) comprises a first resistor (R1), a first time relay connected with the first resistor (R1) and a second time relay arranged in parallel with the first resistor (R1), wherein the first time relay comprises a first relay coil, a first normally open contact and a first normally closed contact, the second time relay comprises a second relay coil, a second normally open contact and a second normally closed contact, two ends of the second relay coil are coupled in parallel with the first resistor (R1), the first relay coil is coupled in series with the first resistor (R1), the second normally open contact is coupled in series with the first normally closed contact, the second normally closed contact is coupled in series with the second relay coil, the first normally open contact is coupled in series with the second normally closed contact, one end of the first resistor (R1) is coupled with a power supply, one end of the second normally open contact is grounded, the first relay coil is connected with a second electromagnetic relay, the second electromagnetic relay comprises a second electromagnetic coil and a second normally open contact, the second electromagnetic coil is connected with a third electromagnetic relay, the third electromagnetic relay comprises a third electromagnetic coil and a third electromagnetic normally open contact, and two ends of the second electromagnetic normally open contact are coupled with the second normally open contact in parallel; the second electromagnetic coil is coupled with the first relay coil in series, the third electromagnetic coil is coupled with the second relay coil in series, two ends of the third electromagnetic normally-open contact are coupled with the first normally-open contact in parallel, the driving circuit (5) is electrically connected with a control circuit (51), and the control circuit (51) comprises a first button, a first electromagnetic relay and a fourth time relay; the first electromagnetic relay comprises a first electromagnetic normally-open contact and a first electromagnetic coil, and the fourth time relay comprises a fourth relay coil, two fourth normally-closed contacts and a fourth normally-open contact; the first electromagnetic coil is coupled with the first button in series, a fourth normally-closed contact is coupled with the first electromagnetic coil in series, the other end of the fourth normally-closed contact is grounded, and one end of the first button is connected with a power supply; first normally open contact with the parallel arrangement of first button, fourth relay coil with first normally open contact series coupling, another fourth normally closed contact with fourth relay coil series coupling, the power is connected to the one end of first normally open contact, the one end ground connection setting of another fourth normally closed contact, fourth normally open contact with second electromagnetism normally open contact parallel coupling.
3. The loudspeaker box shell injection molding blanking die of claim 1, characterized in that: the cross section of the rotating blade (45) is arc-shaped.
4. The loudspeaker box shell injection molding blanking die of claim 3, characterized in that: the rotating blade (45) is provided with a plurality of vent holes (451).
5. The loudspeaker box shell injection molding blanking die of claim 1, characterized in that: and a heat insulation block (411) is fixedly arranged on the inner side wall of the connecting block (47).
6. The loudspeaker box shell injection molding blanking die of claim 1, characterized in that: the number of the first discharging pipes (46) is four, three first discharging pipes (46) are uniformly arranged and arranged right above the middle part of the sound box shell, the rest first discharging pipes (46) are positioned right above one side of the upper part of the sound box shell, and the inner diameter of the first discharging pipes (46) positioned right above the middle part of the sound box shell is larger than that of the first discharging pipes (46) positioned above one side of the sound box shell.
7. The loudspeaker box shell injection molding blanking die of claim 2, characterized in that: drive circuit (5) still includes third time relay, third time relay includes third relay coil and third normally closed contact, third relay coil with driving motor (421) series coupling, third normally closed contact with third relay coil series coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810632084.9A CN109016364B (en) | 2018-06-19 | 2018-06-19 | Loudspeaker box shell injection molding blanking die |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810632084.9A CN109016364B (en) | 2018-06-19 | 2018-06-19 | Loudspeaker box shell injection molding blanking die |
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| Publication Number | Publication Date |
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| CN109016364A CN109016364A (en) | 2018-12-18 |
| CN109016364B true CN109016364B (en) | 2021-07-20 |
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| CN203594823U (en) * | 2013-05-30 | 2014-05-14 | 邓远明 | Impeller type flow control valve |
| CN203650864U (en) * | 2013-11-26 | 2014-06-18 | 深圳Tcl新技术有限公司 | Injection mold |
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