CN217777607U - Injection mold - Google Patents

Abstract

The utility model belongs to the technical field of the technique of shell fragment processing and specifically relates to an injection mold is related to, it is including the mould of moulding plastics and the lower mould of moulding plastics, mould plastics and be formed with the processing passageway that the confession shell fragment stretched into between the lower mould of moulding plastics, during the compound die mould plastics and be formed with the die cavity that is used for the shaping plastic block between the extension of mould plastics, mould plastics and open the passageway of moulding plastics that communicates with the die cavity in the mould, molten plastics can get into in the die cavity through the passageway of moulding plastics. This application has the effect that can improve the stability of plastic pellet in the shell fragment.

Description

Injection mold

Technical Field

The application relates to the technical field of shell fragment processing, especially, relate to an injection mold.

Background

The audio socket is a socket which can be inserted into a network cable to be communicated with equipment such as audio equipment, and is internally connected with a spring sheet for conducting a circuit.

A spring plate disclosed in the related art includes a fixing portion, an extending portion integrally formed on the fixing portion, and a plastic block provided at an end of the extending portion. When the elastic sheet is produced and processed, the plastic block is usually firstly subjected to injection molding and then assembled on the extension part in the later period in a clamping manner, and the plastic block has poor stability and needs to be improved.

SUMMERY OF THE UTILITY MODEL

In order to improve the stability of the plastic block in the shell fragment, this application provides an injection mold.

The application provides an injection mold adopts following technical scheme:

the utility model provides an injection mold, includes mould plastics and mould plastics lower mould, mould plastics and be formed with the processing passageway that the confession shell fragment stretched into between the lower mould of moulding plastics, during the compound die mould plastics and be formed with the die cavity that is used for the shaping plastic block between the extension of mould plastics upper mould, mould plastics lower mould and shell fragment, open the passageway of moulding plastics that is equipped with the die cavity intercommunication in the mould plastics upper mould, molten plastics can get into in the die cavity through the passageway of moulding plastics.

By adopting the technical scheme, when the elastic sheet is processed, the extending part of the elastic sheet firstly extends into the processing channel, a cavity can be formed between the injection upper die, the injection lower die and the extending part of the elastic sheet after die assembly, and then molten plastic is injected into the cavity through the injection channel, so that a plastic block is formed by injection molding in the cavity. The fixed cladding of plastic block after the shaping is in the outside of shell fragment extension, and its and the joint strength of extension are high, and the plastic block is difficult for separating with the extension when the shell fragment is used, and the stability of plastic block is good, the finished product quality of shell fragment is high.

Optionally, the injection molding upper die comprises an upper die base and an upper die core arranged right below the upper die base, the upper die base is connected with a sprue bushing for outputting molten plastics, the injection molding channel comprises a transition channel arranged in the upper die base and communicated with the sprue bushing, a main channel arranged in the upper die core, a plurality of branch channels communicated with the main channel, and liquid outlet channels communicated with the branch channels, the bottoms of the liquid outlet channels are communicated and respectively located right above the die cavities, and the main channel is communicated with the transition channel during die assembly.

By adopting the technical scheme, when the die is closed, the molten plastic is injected into the upper die base through the sprue bushing and then flows downwards under the action of the gravity of the molten plastic, and then enters the die cavity through the transition flow channel, the main flow channel, the branch flow channel and the liquid outlet flow channel in sequence, so that the molten plastic is cooled in the die cavity to form the plastic block. When the mold is processed, a manufacturer can set a plurality of runners in the upper mold core in advance to correspond to the mold cavities at different positions respectively, so that the mold can synchronously mold a plurality of plastic blocks in the one-time mold opening and closing process, and the production efficiency of the elastic sheet is improved.

Optionally, go up the mould benevolence and include the upper die frame, set up in the inboard upper padding plate of upper die frame and set up the clamp plate under the upper padding plate, go out the liquid runner including from top to bottom set gradually and the first liquid hole, second that communicate each other goes out liquid hole and third, first liquid hole and second go out liquid hole and set up on the upper padding plate, the third goes out liquid hole and sets up on the clamp plate, the second goes out the aperture in liquid hole and is greater than the aperture in first liquid hole and third liquid hole.

By adopting the technical scheme, the molten plastic flowing down from the sub-runner flows to the cavity through the first liquid outlet hole, the second liquid outlet hole and the third liquid outlet hole in sequence, and waste materials are formed in the first liquid outlet hole, the second liquid outlet hole and the third liquid outlet hole after cooling. The aperture that the second goes out the liquid hole sets up to be greater than the aperture that first liquid hole and third go out the liquid hole for the waste material can form one section bellying in the second goes out liquid hole, and above-mentioned bellying can the butt go out the upside pore wall in liquid hole at the second during branch mould, moves up with the plastic block after the relative shaping of drive waste material, helps moulding plastics the going on of accomplishing back drawing of patterns process.

Optionally, the liquid outlet channel further includes a flow guide hole and a fourth liquid outlet hole sequentially communicated with the lower portion of the third liquid outlet hole, the aperture of the fourth liquid outlet hole is smaller than that of the third liquid outlet hole, and the aperture of the flow guide hole is gradually reduced from the third liquid outlet hole to the fourth liquid outlet hole.

Through adopting above-mentioned technical scheme, the setting of fourth play liquid hole can be concentrated the fused plastics that follow liquid outlet flow way output and converge to the die cavity in, and its opening sets up to be less than third play liquid hole for fused plastics is difficult for oozing to the die cavity outside when going out the liquid, helps improving the shaping quality of plastic block. The water conservancy diversion hole plays the effect of direction when the third goes out liquid hole flow direction fourth play liquid hole at molten plastics, and its lateral wall is difficult for the hydrops because of the slope sets up, has not only improved molten plastics's utilization ratio, still is favorable to the drawing of patterns of waste material.

Optionally, the injection molding lower die comprises a lower die base, a lower die core arranged right above the lower die base and a plurality of molding blocks detachably arranged in the lower die core, the upper end face of each molding block is provided with a molding groove for forming a cavity, and the molding grooves are distributed one by one right below the liquid outlet flow channel.

Through adopting above-mentioned technical scheme, the shaping piece can be dismantled and set up on lower mould benevolence, and the shaping piece is torn open and is changed to the operating personnel accessible during the use to the adaptation is processed the plastic block of different shapes and size, and the mode replacement cost of comparing in the whole mould of replacement is lower, and the practicality of mould is strong.

Optionally, the forming block includes a shaping column and a limiting column inserted in the lower mold core, the forming groove is formed by enclosing the top ends of the shaping column and the limiting column, and an installation groove for embedding the shaping column and the limiting column is formed in the upper end face of the lower mold core.

Through adopting above-mentioned technical scheme, when assembling into the type piece, operating personnel only need with type post and spacing post embedding mounting groove can, easy and simple to handle, installation effectiveness are high.

Optionally, one side of the limiting column close to the shaping column is integrally formed with a limiting convex edge, and a limiting groove for the limiting convex edge to slide and extend into is formed in the side wall of the shaping column close to the limiting column.

Through adopting above-mentioned technical scheme, the back that targets in place is assembled to the shaping piece, and spacing bead is inserted and is established in the spacing groove, and the horizontal lateral wall butt of spacing bead this moment can effectively block spacing post and design post along the horizontal open-ended direction of perpendicular to spacing groove in horizontal side relative movement, has improved the relative stability of spacing post and design post, is favorable to the formation in shaping groove.

Optionally, the lower die core includes die frame, sets up at the inboard lower bolster of die frame down and inserts the mounting panel of establishing in the lower bolster, the mounting groove is seted up on the mounting panel, the lateral wall bottom of shaping post and spacing post is provided with the fixed block respectively, be fixed with the butt arris of laminating in the fixed block top on the cell wall of mounting groove.

Through adopting above-mentioned technical scheme, when assembling into the type piece, place each shaping piece on the lower bolster earlier, place the mounting panel in lower bolster top from top to bottom again for each shaping piece stretches into in the mounting groove respectively. The butt arris laminating plays the effect that blocks the relative mounting panel of shaping piece and shift up at the upside of fixed block this moment, has further improved the stability of shaping piece.

Optionally, the upper side of the limiting column is integrally formed with a stop strip, the bottom surface of the upper mold core is provided with a yielding groove for the stop strip to extend into, and the elastic sheet is provided with a stop hole for the stop strip to penetrate out.

Through adopting above-mentioned technical scheme, when the process passage was arranged in to the shell fragment, the locking strip was worn to establish in the locking hole, can block the shell fragment along the one side horizontal migration of perpendicular to self direction of transmission, has improved the stability of shell fragment. When the mold is closed, the receding groove can be used for the stop strip to stretch into, so that the stop strip is prevented from interfering the joint contact of the injection upper mold and the injection lower mold.

Optionally, the top surface of the stop bar is a convex arc surface.

Through adopting above-mentioned technical scheme, protruding cambered surface plays the effect of direction when the locking strip stretches into the locking hole and lets the groove, has improved the smooth and easy degree of grafting of locking strip.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the die is closed, a cavity can be formed among the injection upper die, the injection lower die and the extension part of the elastic sheet, molten plastic can enter the cavity through the injection channel so as to form a plastic block in the cavity, the plastic block is fixedly coated on the outer side of the extension part of the elastic sheet after being processed by the injection die, the stability of the plastic block is high, and the quality of a finished product of the elastic sheet is good;

2. the molten plastic is injected through the squirt nozzle and then flows into the cavity through the transition flow channel, the main flow channel, the sub-flow channel and the liquid outlet flow channel in sequence, and waste materials are formed in the liquid outlet flow channel; the second liquid outlet hole can enable the waste to move along with the injection upper die when the die is opened, so that the subsequent demolding process is facilitated;

3. the forming block is inserted in the lower die core, so that the assembly and disassembly are convenient; the butt piece laminating plays the effect that blocks the shaping piece and shift up at the upside of fixed block.

Drawings

Fig. 1 is a schematic structural diagram of the elastic sheet after being processed and molded according to the embodiment of the present application.

Fig. 2 is a schematic structural diagram of the mold splitting according to the embodiment of the present application.

FIG. 3 is a schematic partial cross-sectional view of an upper mold and a lower mold core during mold closing according to an embodiment of the present application.

Fig. 4 is an enlarged schematic view at a in fig. 3.

Fig. 5 is an exploded view of the upper and lower cores in the present embodiment.

Fig. 6 is an exploded view of a shaped block in an embodiment of the present application.

Description of reference numerals:

1. a spring plate; 11. a fixed part; 12. an extension portion; 13. a plastic block; 14. a stop hole; 2. injection molding an upper die; 21. an upper die holder; 211. a squirt nozzle; 22. an upper die core; 221. putting a mold frame; 222. an upper base plate; 223. pressing a plate; 224. a yielding groove; 3. injection molding a lower die; 31. a lower die holder; 32. a lower die core; 321. a lower mold frame; 322. a lower base plate; 323. mounting a plate; 324. mounting grooves; 325. abutting edges; 33. forming a block; 331. a sizing column; 332. a limiting column; 333. forming a groove; 334. a fixed block; 335. a limiting convex rib; 336. a limiting groove; 337. a stopper bar; 338. a convex arc surface; 4. a guide post; 5. processing a channel; 6. a material belt; 7. a cavity; 8. injection molding a channel; 81. a transition flow channel; 82. a main flow channel; 83. a shunt channel; 84. a liquid outlet flow passage; 841. a first liquid outlet hole; 842. a second liquid outlet hole; 843. a third liquid outlet hole; 844. a flow guide hole; 845. and a fourth liquid outlet hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses an injection mold for processing the elastic sheet 1 shown in figure 1, wherein the elastic sheet 1 can be used in audio accessories such as a sound socket, a microphone socket and the like.

Referring to fig. 1, the elastic sheet 1 includes a fixing portion 11, an extending portion 12 integrally formed on one side of the fixing portion 11, and a plastic block 13 fixedly disposed on the extending portion 12, where the fixing portion 11 and the extending portion 12 are both made of a conductive metal sheet, such as an aluminum sheet, and the plastic block 13 is located at one end of the extending portion 12 away from the fixing portion 11.

Referring to fig. 2, the injection mold comprises an injection upper mold 2, an injection lower mold 3 and a guide pillar 4, the injection upper mold 2 is located right above the injection lower mold 3, and the guide pillar 4 is arranged in the injection upper mold 2 and the injection lower mold 3 in a penetrating manner. When the injection mold is used, the injection mold is assembled in an injection molding machine, and feeding of molten plastic and mold opening or mold closing of the mold are realized through the injection molding machine. A processing channel 5 is formed between the injection upper die 2 and the injection lower die 3, and a material belt 6 of the elastic sheet 1 before being processed with the plastic block 13 can extend into the processing channel 5. The material belt 6 in this embodiment includes a plurality of sets of elastic pieces 1, and after the plastic block 13 is formed on the material belt 6, the independent elastic pieces 1 can be formed through a cutting process.

Referring to fig. 3 and 4, when the mold is closed, a cavity 7 is formed between the upper injection mold 2, the lower injection mold 3 and the extension portion 12 of the spring plate 1, and the shape and size of the cavity 7 are the same as those of the plastic block 13. An injection molding channel 8 communicated with the cavity 7 is formed in the injection molding upper die 2, molten plastic output by an injection molding machine can enter the cavity 7 from the injection molding channel 8 so as to be injection molded into a plastic block 13 on the extension part 12 of the elastic sheet 1, the molded plastic block 13 is fixedly coated on the outer side of the extension part 12, the stability of the plastic block 13 is high, and the quality of a finished product of the elastic sheet 1 is good.

Referring to fig. 3, the injection upper mold 2 includes an upper mold base 21 and an upper mold core 22 disposed right below the upper mold base 21, a sprue 211 is fixedly disposed on the upper mold base 21, and the sprue 211 is connected to an outlet of the injection molding machine for outputting molten plastic. The upper mold core 22 includes an upper mold frame 221, an upper pad 222 fixedly connected to an inner side of the upper mold frame 221, and a press plate 223 positioned right below the upper pad 222, wherein the press plate 223 is embedded in the upper mold frame 221.

Referring to fig. 3 and 5, the injection channel 8 includes a transition channel 81 disposed in the upper mold base 21, a main channel 82 and a plurality of branch channels 83 disposed on the top surface of the upper pad 222, and a liquid outlet channel 84 connected to the lower portion of the guide channel, the transition channel 81 is connected to the outlet of the sprue 211, and the molten plastic flows into the transition channel 81 after being output by the sprue 211. When the mold is closed, the main flow passage 82 is communicated with the transition flow passage 81 to transfer the molten plastic flowing out of the transition flow passage 81 to the branch flow passage 83. The plurality of sub-runners 83 in this embodiment are provided, and each sub-runner 83 is communicated with two liquid outlet runners 84, and the bottom of each liquid outlet runner 84 is correspondingly arranged right above each cavity 7.

Referring to fig. 3 and 4, the liquid outlet flow channel 84 includes a first liquid outlet hole 841, a second liquid outlet hole 842, a third liquid outlet hole 843, a flow guide hole 844 and a fourth liquid outlet hole 845 which are sequentially arranged from top to bottom, wherein the first liquid outlet hole 841 and the second liquid outlet hole 842 are arranged on the upper backing plate 222, the third liquid outlet hole 843, the flow guide hole 844 and the fourth liquid outlet hole 845 are arranged in the pressing plate 223, the aperture of the second liquid outlet hole 842 is larger than the apertures of the first liquid outlet hole 841 and the third liquid outlet hole 843, the aperture of the fourth liquid outlet hole 845 is smaller than the aperture of the third liquid outlet hole 843, and the aperture of the flow guide hole 844 is gradually reduced from the third liquid outlet hole 843 to the fourth liquid outlet hole 845.

Referring to fig. 3 and 4, when the mold is closed, the second liquid outlet 842 and the third liquid outlet 843 are communicated, the molten plastic flowing out of the runner 83 flows to the cavity 7 through the first liquid outlet 841, the second liquid outlet 842, the third liquid outlet 843, the flow guide hole 844 and the fourth liquid outlet 845 in sequence, and waste materials are formed in the liquid outlet runner 84 after the injection molding is completed. The second liquid outlet 842 has a larger aperture, so that the waste can form a protrusion in the second liquid outlet 842, and when the injection molding machine drives the injection mold to separate the mold, the protrusion abuts against the upper side wall of the second liquid outlet 842, thereby facilitating the separation of the waste from the plastic block 13.

Referring to fig. 3 and 5, the injection lower mold 3 includes a lower mold base 31, a lower mold core 32 fixedly disposed above the lower mold base 31, and a plurality of forming blocks 33 detachably disposed in the lower mold core 32, and the number of the forming blocks 33 is equal to the number of the liquid outlet runners 84. The lower mold core 32 comprises a lower mold frame 321, a lower cushion plate 322 fixedly arranged on the inner side of the lower mold frame 321 and a mounting plate 323 inserted in the lower cushion plate 322, wherein the upper end surface of the mounting plate 323 is provided with mounting grooves 324 for the molding blocks 33 to be respectively inserted, and the molding blocks 33 are connected with the mounting plate 323 in an inserting manner, so that the lower mold core is convenient to disassemble and assemble.

Referring to fig. 5 and 6, the forming block 33 includes a shaping column 331 and a limiting column 332, and the shaping column 331 and the limiting column 332 are distributed in a direction parallel to the direction of the material tape 6. The shaping column 331 and the top end of the limiting column 332 enclose to form a shaping groove 333 with an opening at the upper side, the cavity 7 is enclosed by the groove wall of the shaping groove 333, the bottom wall of the pressing plate 223 and the extension part 12, and each shaping groove 333 is respectively positioned right below each liquid outlet flow passage 84.

Referring to fig. 3 and 6, in order to improve the stability of the forming block 33 inserted into the mounting groove 324, the fixing blocks 334 are respectively integrally formed at the bottom ends of the opposite side walls of the forming column 331 and the limiting column 332, and the abutting edges 325 are integrally formed on the opposite side wall of the mounting groove 324. When the forming block 33 is assembled in place, the abutting edge 325 is attached to the upper side of the fixing block 334 to block the forming block 33 from moving upward relative to the lower die core 32. In order to improve the relative stability of the shaping column 331 and the limiting column 332, a limiting protruding edge 335 is integrally formed on one side of the limiting column 332 close to the shaping column 331, a limiting groove 336 is formed on the side wall of the shaping column 331 close to the limiting column 332, and the upper side and the lower side of the limiting groove 336 are communicated and can be used for the limiting protruding edge 335 to slide and extend into so as to block the limiting column 332 from horizontally moving relative to the shaping column 331 along the direction perpendicular to the transmission direction of the material belt 6.

Referring to fig. 4 and 6, two stop strips 337 are integrally formed on the upper side of the limiting column 332, the top surfaces of the stop strips 337 are convex arc surfaces 338, and the bottom surface of the pressing plate 223 is provided with a yielding groove 224 into which each stop strip 337 extends, so as to ensure the pressing of the pressing plate 223 and the material tape 6.

Referring to fig. 1 and 6, each set of elastic sheet 1 is provided with two stop holes 14, and each stop hole 14 can penetrate out of the stop strip 337 close to the stop hole 14 to prevent the elastic sheet 1 from moving horizontally relative to the forming block 33 along the direction perpendicular to the transmission direction of the material belt 6.

The embodiment of the application adopts the following implementation principle: when the elastic sheet 1 is processed, the injection mold is separated by using the injection molding machine, and then the material belt 6 for forming the elastic sheet 1 is extended into the processing channel 5, and the extending parts 12 of the elastic sheets 1 on the material belt 6 are respectively aligned with the forming grooves 333. Then, an injection molding machine is used for closing the injection mold, so that a cavity 7 is formed among the upper injection mold 2, the lower injection mold 3 and the extension part 12 of the elastic sheet 1, then molten plastic is injected into the sprue 211, and the molten plastic enters the cavity 7 through the transition flow channel 81, the main flow channel 82, the branch flow channel 83 and the liquid outlet flow channel 84 in sequence, so that the plastic block 13 is formed in the cavity 7 through injection molding. The plastic block 13 after molding is fixedly wrapped on the outer side of the extension part 12, the plastic block 13 is high in stability and not easy to separate from the extension part 12 when in use, and the finished product quality of the elastic sheet 1 is good.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. An injection mold is characterized in that: mould (2) and mould plastics lower mould (3) including moulding plastics, mould plastics and be formed with processing passageway (5) that feed spring plate (1) stretched into between mould (2) and the lower mould (3) of moulding plastics, during the compound die mould plastics and be formed with die cavity (7) that are used for shaping plastic block (13) between extension (12) of mould (2), lower mould (3) and the shell spring (1) of moulding plastics, mould plastics and set up the passageway (8) of moulding plastics with die cavity (7) intercommunication in last mould (2), molten plastics can get into in die cavity (7) through moulding plastics passageway (8).

2. An injection mold according to claim 1, wherein: the injection upper die (2) comprises an upper die base (21) and an upper die core (22) arranged right below the upper die base (21), a sprue pump (211) used for outputting molten plastics is connected to the upper die base (21), a plurality of transition flow channels (81) communicated with the sprue pump (211) are arranged in the upper die base (21), a main flow channel (82) communicated below the transition flow channels (81) and a plurality of branch flow channels (83) communicated with the main flow channel (82) are arranged on the upper die core (22), and a liquid outlet flow channel (84) communicated with the bottom is communicated to the branch flow channels (83).

3. An injection mould according to claim 2, characterized in that: go up mould benevolence (22) including last framed (221), set up in last backing plate (222) of last framed (221) inboard and set up clamp plate (223) under last backing plate (222), go out liquid runner (84) including from top to bottom set gradually and first play liquid hole (841), second play liquid hole (842) and third play liquid hole (843) that communicate each other, first play liquid hole (841) and second play liquid hole (842) are seted up on last backing plate (222), third is gone out liquid hole (843) and is seted up on clamp plate (223), the aperture that second was gone out liquid hole (842) is greater than the aperture that first was gone out liquid hole (841) and third was gone out liquid hole (843).

4. An injection mould according to claim 3, characterized in that: the liquid outlet flow channel (84) further comprises a flow guide hole (844) and a fourth liquid outlet hole (845) which are sequentially communicated below the third liquid outlet hole (843), the aperture of the fourth liquid outlet hole (845) is smaller than that of the third liquid outlet hole (843), and the aperture of the flow guide hole (844) is gradually reduced from the third liquid outlet hole (843) to the fourth liquid outlet hole (845).

5. An injection mould according to claim 2, characterized in that: the injection molding lower die (3) comprises a lower die base (31), a lower die core (32) arranged right above the lower die base (31) and a plurality of molding blocks (33) detachably arranged in the lower die core (32), molding grooves (333) with the same shape as the plastic blocks (13) are formed in the upper end face of each molding block (33), and the molding grooves (333) are distributed right below the liquid outlet flow channel (84) one by one.

6. An injection mold according to claim 5, wherein: the shaping piece (33) is including design post (331) and spacing post (332) of cartridge in lower mould benevolence (32), shaping groove (333) are enclosed to close by the top of design post (331) and spacing post (332) and are formed, the mounting groove (324) that supply design post (331) and spacing post (332) embedding are seted up to the up end of lower mould benevolence (32).

7. An injection mold according to claim 6, wherein: spacing post (332) are close to one side integrated into one piece of shaping post (331) and have spacing bead (335), set up on shaping post (331) is close to the lateral wall of spacing post (332) and supply spacing bead (335) to slide spacing groove (336) that stretches into.

8. An injection mold according to claim 6, wherein: lower mould benevolence (32) include lower die frame (321), set up at lower bolster (322) of lower die frame (321) inboard and insert mounting panel (323) of establishing in lower bolster (322), mounting groove (324) are seted up on mounting panel (323), the lateral wall bottom of shaping post (331) and spacing post (332) is provided with fixed block (334) respectively, be fixed with butt arris (325) of laminating above fixed block (334) on the cell wall of mounting groove (324).

9. An injection mold according to claim 6, wherein: the upper side integrated into one piece of spacing post (332) has stopper strip (337), the groove of stepping down (224) that supplies stopper strip (337) to stretch into is seted up to the bottom surface of last mould benevolence (22), sets up on shell fragment (1) and supplies stopper hole (14) that stopper strip (337) worn out.

10. An injection mold according to claim 9, wherein: the top surface of the stop strip (337) is a convex arc surface (338).

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