Mold for injection molding of special-shaped button

Abstract

The mold comprises an upper mold, a lower mold and a plurality of mold splitting mechanisms, a plurality of injection molding areas are arranged on the upper mold, a plurality of first mold cavities are formed in the injection molding areas, runners are formed in the injection molding areas, a plurality of groove positions are formed in the lower mold, and limiting seats are connected in the groove positions in a sliding mode; the die splitting mechanism comprises a connecting seat and two symmetrical die splitting blocks, the connecting seat is in sliding connection with the limiting seat, a spring is arranged between the connecting seat and the limiting seat, the die splitting blocks are in sliding connection with the connecting seat, and the two first inclined planes are arranged on the connecting seat. Elastic pieces are fixedly connected to the two sides of the connecting base, a plurality of second mold cavities and a plurality of third mold cavities are formed in the sub-mold block, and a second inclined face is arranged on the sub-mold block. According to the mold for injection molding of the special-shaped button, the two sub-mold blocks are pushed to be separated through the spring and the elastic piece, so that automatic demolding of the special-shaped button is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold field especially relates to a mould for injection molding special-shaped button. BACKGROUND

[0002] In the processing of clothing accessories, special-shaped buttons (such as circular buckle body, bottom extension threading ring structure) usually adopt insert injection molding process to form, and the prior art generally adopts multi-cavity mold to synchronously injection mold multiple buttons to improve production efficiency, and the process is as follows: metal inserts are pre-inserted into the threading ring reserved hole and fixed in the mold cavity, and the mold is demolded after injection molding and cooling;

[0003] However, the process has the following defects: when demolding, the threading ring of the button and the insert form a tight covering structure, and the worker needs to manually disassemble the insert from the threading ring one by one, and the disassembled insert needs to be re-cleaned and accurately reset in the mold for the next round of injection molding; in the operation, the steps to be taken for demolding are complicated, resulting in low production efficiency and inconvenience for large-scale batch production. UTILITY MODEL CONTENTS

[0004] The utility model discloses a mould for injection molding special-shaped button, and two split modules are separated through spring and elastic piece to realize the automatic demolding of special-shaped button.

[0005] The utility model discloses a mould for injection molding special-shaped button adopts the technical scheme that:

[0006] Including upper die, lower die and multiple split module mechanism, be equipped with multiple injection molding area on the upper die, be equipped with multiple first mold cavity in the injection molding area, be equipped with runner in the injection molding area, the runner is communicated with first mold cavity, be equipped with multiple slot position on the lower die, the limit seat is slidably connected in the slot position, two first inclined surfaces are opened on the limit seat, a plurality of bolts are connected with cooperation on the lower die, the bolt is rotated and is connected with the limit seat in the slot position, the split module mechanism includes connecting seat and two symmetrical split modules, the connecting seat is slidably connected with the limit seat, and the spring is arranged between the connecting seat and the limit seat, two split modules are slidably connected with the two sides of the connecting seat respectively, the elastic piece is fixedly connected on the two sides of the connecting seat, the elastic piece is fixedly connected with the split module, multiple second mold cavities and multiple third mold cavities are opened on the split module, the third mold cavity is communicated with second mold cavity, the second inclined surface is opened on the split module, the upper die cover is arranged on the lower die, the injection molding area top touches the split module, and the first inclined surface top touches the second inclined surface.

[0007] As a preferred scheme, multiple exhaust channels are opened on the split module, the exhaust channel is communicated with the third mold cavity, multiple through holes are penetrated in the connecting seat, and the through hole is located below the exhaust channel.

[0008] As a preferred scheme, a plurality of first sliding rods are fixedly connected to the connecting seat, the first sliding rods penetrate the connecting seat, and two ends of the first sliding rods are respectively connected to the two split modules in a sliding mode.

[0009] As a preferred scheme, the split module is provided with an open slot, and the connecting seat is located in the open slot.

[0010] As a preferred scheme, the elastic member is an elliptical spring piece, mounting grooves are formed in both sides of the connecting seat and in the open slot, connecting columns extend in the mounting grooves, a plurality of connecting holes penetrate the elastic member, the elastic member is clamped into the mounting grooves, and the connecting columns are clamped into the connecting holes and fixedly connected.

[0011] As a preferred scheme, a plurality of guide rails extend from both sides of the inner wall of the slot, and a plurality of sliding grooves are formed in both sides of the limiting seat, and the guide rails are connected to the sliding grooves in a sliding mode.

[0012] As a preferred scheme, a plurality of positioning holes penetrate the upper die, a plurality of positioning columns extend from the lower die, and the positioning columns are slidably inserted into the positioning holes.

[0013] The mold for injection molding of the special-shaped buckle has the following beneficial effects:

[0014] When the upper die and the lower die are closed, the injection molding area drives the split module mechanism to reset, so that the first mold cavity and the second mold cavity are communicated, the first mold cavity and the second mold cavity form a circular buckle body of the buckle, and the third mold cavity forms a threading ring of the buckle; the external injection molding equipment injects melt into the first mold cavity, the second mold cavity and the third mold cavity through the flow channel, the melt is solidified into a support in the flow channel, the melt forms the buckle in the first mold cavity, the second mold cavity and the third mold cavity, and the support is integrally formed with the plurality of buckles;

[0015] When the upper die is opened, the split module mechanism is released from the constraint state, the spring automatically jacks up the connecting seat to slide a certain distance, so that the split modules are separated from the slot constraint; the two split modules separated from the constraint are pushed by the two elastic members to symmetrically slide a certain distance on the connecting seat, so that the buckle is demolded from the two split modules; since the support is hung on one of the split modules, the support can avoid the buckle from falling into the lower die, and it is convenient for workers to take the buckle, so that the convenience of taking the buckle and the rapid demolding are improved;

[0016] When the mold parting mechanism resets, the two first inclined surfaces of the limiting seat respectively top the second inclined surfaces of the two mold parts to form a wedge-shaped pressing structure, the two mold parts are pushed to be more closely attached, the melt overflow of the finished button parting line position is reduced; the limiting seat is pushed to slide up through the rotating bolt, the two mold parts are synchronously pushed to be more closely attached to the upper mold, the melt overflow of the finished button parting line position is further reduced, and the surface quality of the finished button is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structure schematic view of a mold for injection molding a special-shaped button.

[0018] Figure 2 is a combined installation structure schematic view of a mold for injection molding a special-shaped button.

[0019] Figure 3 is a lower mold sectional view of a mold for injection molding a special-shaped button.

[0020] Figure 4 is a mounting schematic view of a lower mold and a limiting seat of a mold for injection molding a special-shaped button.

[0021] Figure 5 is a limiting seat sectional view of a mold for injection molding a special-shaped button.

[0022] Figure 6 is a mold part installation schematic view of a mold for injection molding a special-shaped button.

[0023] Figure 7 is a structure schematic view of a second mold cavity, a third mold cavity and an exhaust passage of a mold for injection molding a special-shaped button.

[0024] Figure 8 is a connecting seat sectional view of a mold for injection molding a special-shaped button.

[0025] Figure 9 is a connecting seat sectional view of a mold for injection molding a special-shaped button.

[0026] Figure 10 is an upper mold sectional view of a mold for injection molding a special-shaped button.

[0027] Figure 11 is a structure schematic view of a mold for injection molding a special-shaped button in injection molding work.

[0028] Figure 12 is a structure schematic view of a mold for injection molding a special-shaped button in demolding work. DETAILED DESCRIPTION

[0029] The utility model makes further elaboration and illustration to the utility model below combining specific embodiment and the drawing of specification:

[0030] Please refer to Figure 1 and Figure 2 .

[0031] The utility model discloses a mould for injection molding special-shaped buckle, including upper die 1, lower die 2 and a plurality of parting mechanism 3.

[0032] A plurality of positioning holes 11 are penetrated on the upper die 1, and the embodiment preferably four positioning holes 11, four positioning holes 11 are close to four corners of the upper die 1 respectively;

[0033] Further, the bottom of the upper die 1 is provided with a plurality of injection molding areas, and the embodiment preferably three injection molding areas, according to the width of the upper die 1 and the lower die 2, a reasonable number of injection molding areas are planned at the bottom of the upper die 1, a flow channel 12 is provided in the injection molding area, one end of the flow channel 12 extends to the end face of one end of the upper die 1, a plurality of first mold cavities 13 are provided in the injection molding area, the plurality of first mold cavities 13 are arranged in a linear interval, and the middle part of the flow channel 12 is communicated with the first mold cavity 13.

[0034] Please refer to Figures 1-4 .

[0035] A plurality of positioning columns 21 extend on the lower die 2, and the embodiment preferably four positioning columns 21, four positioning columns 21 correspond to four positioning holes 11, the positioning column 21 is perpendicular to the top of the lower die 2, and four positioning columns 21 are close to four corners of the lower die 2 respectively, a plurality of slot positions 22 are provided on the lower die 2, and the embodiment preferably three slot positions 22, three slot positions 22 correspond to three injection molding areas, and both ends of the slot position 22 pass through both ends of the lower die 2, a plurality of guide rails 221 extend on both sides of the inner wall of the slot position 22, and the guide rail 221 is parallel to the positioning column 21.

[0036] Further, two through grooves 222 are provided in the groove bottom of the slot position 22, and the through groove 222 penetrates the lower die 2, a threaded hole 223 is provided in the groove bottom of the slot position 22, and the threaded hole 223 penetrates the lower die 2, a plurality of bolts 23 are connected in cooperation on the lower die 2, and the embodiment preferably three bolts 23, three bolts 23 correspond to three slot positions 22, and the bolt 23 is connected in cooperation with the threaded hole 223, and the edge of both sides of the slot position 22 is provided with a third inclined surface.

[0037] Please refer to Figures 3-5 and Figure 11 、 Figure 12 .

[0038] A limiting seat 24 is slidably connected in the slot 22, two first inclined surfaces are formed on the top of the limiting seat 24, the two first inclined surfaces are opposite to each other and form a wedge-shaped depression on the top of the limiting seat 24, and a plurality of sliding grooves 241 are formed on the two sides of the limiting seat 24, and the guide rail 221 is slidably connected with the sliding grooves 241;

[0039] Further, one end of the bolt 23 penetrates into the slot 22 and is rotationally connected with the limiting seat 24, a bearing is embedded on the limiting seat 24, a screw is sleeved in the inner ring of the bearing, and the screw is connected with the one end of the bolt 23 penetrating through the limiting seat 24, so as to constrain the rotation of the bolt 23 on the limiting seat 24, the bearing can reduce the friction between the screw and the limiting seat 24, and avoid that the screw is loosened from the bolt 23 when the bolt 23 is rotated without the screw rotating synchronously with the bolt 23, and the bolt 23 is rotated in the forward direction or the reverse direction to push or pull the limiting seat 24 to slide upward or downward in the slot 22.

[0040] Please refer to Figures 4-12 .

[0041] In the embodiment, the three mold separating mechanisms 3 correspond to the three slots 22, the mold separating mechanism 3 comprises a connecting seat 31 and two symmetrical mold separating blocks 32.

[0042] A plurality of first sliding rods 311 are fixedly connected on the connecting seat 31, and four first sliding rods 311 are preferred in the embodiment, the length of the first sliding rod 311 is smaller than the width of the slot 22, the first sliding rod 311 penetrates through the connecting seat 31, four first machine screws 312 are connected with the connecting seat 31 in a matched mode, the first machine screws 312 abut against the middle part of the first sliding rod 311, and the first sliding rod 311 is fixed on the connecting seat 31.

[0043] Further, a plurality of second sliding rods 313 are fixedly connected on the connecting seat 31, and four second sliding rods 313 are preferred in the embodiment, one end of the second sliding rod 313 penetrates into the connecting seat 31, four second machine screws 314 are connected with the connecting seat 31 in a matched mode, the second machine screws 314 abut against the outer side of the second sliding rod 313, and the second sliding rod 313 is fixed on the connecting seat 31, and the first sliding rod 311 and the second sliding rod 313 are perpendicular to each other.

[0044] Further, a plurality of through holes 315 are formed in the connecting seat 31.

[0045] A plurality of second mold cavities 321 and a plurality of third mold cavities 322 are formed in the mold separating block 32, the two ends of the third mold cavity 322 are communicated with the bottom of the second mold cavity 321, and the second mold cavity 321 and the third mold cavity 322 are close to the edge of the mold separating block 32.

[0046] Further, a plurality of exhaust channels 323 are formed on the sub-module 32, and the exhaust channels 323 are communicated with the third mold cavity 322; during injection molding, the exhaust channels 323 can open the originally closed space of the third mold cavity 322, so that the melt enters the third mold cavity 322, and the air is discharged from the exhaust channels 323; since the diameter of the exhaust channels 323 is small, the melt cannot enter the exhaust channels 323, thereby avoiding overflow of the melt;

[0047] Further, the sub-module 32 is provided with an open slot 324, and two open slots 324 are close to each other; the sub-module 32 is provided with a second inclined surface, and the second inclined surface is located at the edge of the bottom of the sub-module 32.

[0048] The two sub-modules 32 are arranged on the two sides of the connecting seat 31, the connecting seat 31 is arranged in the open slot 324, the two ends of the first sliding rod 311 respectively penetrate the two sub-modules 32, and the two ends of the first sliding rod 311 are respectively connected with the two sub-modules 32 in a sliding mode; the two sides of the connecting seat 31 are fixedly connected with elastic members 33, and the elastic members 33 are fixedly connected with the sub-modules 32;

[0049] Further, the elastic member 33 is preferably an elliptical spring 34, the two sides of the connecting seat 31 and the open slot 324 are both provided with mounting grooves 325, two connecting columns extend in the mounting grooves 325, four connecting holes are formed in the elastic member 33, the two sides of the elastic member 33 are clamped into the two adjacent mounting grooves 325, and the connecting columns are clamped into the connecting holes and fixedly connected; when the elastic member 33 pushes the sub-module 32 to slide on the first sliding rod 311 away from the connecting seat 31, the elastic member 33 also restricts the sub-module 32 on the first sliding rod 311, thereby avoiding that the sub-module 32 is separated from the first sliding rod 311.

[0050] The connecting seat 31 is connected with the limiting seat 24 in a sliding mode through a second sliding rod 313, the other end of the second sliding rod 313 penetrates the limiting seat 24, the second sliding rod 313 is connected with the limiting seat 24 in a sliding mode, the second sliding rod 313 is parallel to the guide rail 221, the four second sliding rods 313 are respectively arranged in the two through grooves 222, and the second inclined surface is located above the first inclined surface;

[0051] Further, the connecting seat 31 and the limiting seat 24 are provided with springs 34, and the springs 34 are preferably four in number; the four springs 34 correspond to the four second sliding rods 313, the springs 34 are arranged on the outer sides of the second sliding rods 313, the two ends of the springs 34 respectively abut against the top of the limiting seat 24 and the bottom of the connecting seat 31, the springs 34 push the second sliding rod 313 of the connecting seat 31 to slide and ascend on the limiting seat 24; since the pushing stroke of the springs 34 is smaller than the height of the sub-module 32, the springs 34 can avoid pushing the sub-module mechanism 3 out of the groove 22;

[0052] Two sub-modules 32 slide on the first slide rod 311 to close and fit, the through hole 315 is below the exhaust channel 323, the sub-modules 32 compress the elastic member 33; push the two sub-modules 32 into the slot position 22, the second slide rod 313 of the connecting seat 31 slides on the limiting seat 24 and compresses the spring 34, so that the first inclined surface touches the second inclined surface, there is a gap between the wedge-shaped depression of the sub-module 32 and the limiting block, so that the air in the third mold cavity 322 is discharged outside the mold through the exhaust channel 323, the through hole 315 and the gap.

[0053] Please refer to Figures 1-12 .

[0054] When performing injection molding work:

[0055] Put the bottom cover of the upper mold 1 on the top of the lower mold 2, the positioning column 21 passes through the positioning hole 11, which plays a role in cooperation of the upper mold 1 and the lower mold 2 in place;

[0056] When the injection area pushes the sub-mold mechanism 3 to reset, the two sub-modules 32 have two strokes; the first stroke, the second inclined surface of the two sub-modules 32 respectively touches the two third inclined surfaces, the two third inclined surfaces push the two sub-modules 32 to slide on the connecting seat 31 to close and fit, while compressing the elastic member 33; the second stroke, the two sub-modules 32 are pushed into the slot position 22 by the injection area, the connecting seat 31 slides down on the limiting seat 24, while compressing the spring 34;

[0057] The two sub-modules 32 fit, so that the third mold cavity 322 of the two sub-modules 32 forms a threading ring of the buckle, the exhaust channel 323 of the two sub-modules 32 forms an air exhaust passage, the top of the two sub-modules 32 fits with the injection area of the upper mold 1, and the end face of one end of the sub-module 32 is flush with the end face of one end of the upper mold 1, so that the second mold cavity 321 of the two sub-modules 32 and the first mold cavity 13 form a circular buckle body of the buckle;

[0058] Through the external injection equipment, melt is injected into the first mold cavity 13, the second mold cavity 321 and the third mold cavity 322 through the runner 12, the melt is solidified in the runner 12 to form a support, the melt is formed into a buckle in the first mold cavity 13, the second mold cavity 321 and the third mold cavity 322, and the support is integrally formed with the plurality of buckles.

[0059] The two first inclined surfaces of the limiting seat 24 respectively touch the second inclined surfaces of the two sub-modules 32 to form a wedge-shaped compression structure, which pushes the two sub-modules 32 to fit more closely, reducing the overflow of melt at the mold line position of the finished buckle; by rotating the bolt 23 to push the limiting seat 24 to slide upward, the two sub-modules 32 are pushed to fit more closely with the upper mold 1, further reducing the overflow of melt at the mold line position of the finished buckle.

[0060] When performing demolding work:

[0061] The upper die 1 is separated from the lower die 2, the mold opening mechanism 3 is in the unbound state, and the two mold opening blocks 32 have two strokes; in the first stroke, the spring 34 automatically lifts the connecting seat 31 to slide on the limiting seat 24 by a certain distance, so that the two mold opening blocks 32 are separated from the groove position 22; in the second stroke, the two mold opening blocks 32 that are separated from the constraint are pushed by the two elastic members 33 to symmetrically slide on the connecting seat 31 by a certain distance, so that the button is automatically demolded from the two mold opening blocks 32.

[0062] The utility model provides a mould for injection molding special-shaped button, when the upper die and lower die are closed, injection molding area promotes mold opening mechanism reset, makes first mold cavity and second mold cavity intercommunication, first mold cavity and second mold cavity form the round button body of button, third mold cavity forms the threading ring of button, through external injection equipment injects melt material in first mold cavity, second mold cavity and third mold cavity through runner, melt material solidifies into support in runner, melt material forms button in first mold cavity, second mold cavity and third mold cavity, support and multiple buttons are integrally formed;

[0063] When the upper die is opened, the mold opening mechanism is in the unbound state, the spring automatically lifts the connecting seat to slide by a certain distance, so that the mold opening blocks are separated from the groove position; the two mold opening blocks that are separated from the constraint are pushed by the two elastic members to symmetrically slide on the connecting seat by a certain distance, so that the button is demolded from the two mold opening blocks; since the support is hung on one of the mold opening blocks, the support can avoid the button from falling into the lower die, and it is convenient for workers to take the parts, so that the convenience of taking the parts and the rapid demolding are improved;

[0064] When the mold opening mechanism is reset, the two first inclined surfaces of the limiting seat respectively abut against the second inclined surfaces of the two mold opening blocks to form a wedge-shaped pressing structure, the two mold opening blocks are pushed to be more closely attached, so that the overflow of the melt material at the mold closing line position of the finished button is reduced; the limiting seat is pushed to slide and rise by rotating the bolt, the two mold opening blocks and the upper die are synchronously pushed to be more closely attached, so that the overflow of the melt material at the mold closing line position of the finished button is further reduced, and the surface quality of the finished button is improved.

[0065] Finally, it should be noted that the above examples are used to illustrate the technical solutions of the utility model, and are not intended to limit the scope of protection of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the essence and scope of the technical solutions of the utility model.

Claims

1. A mold for injection molding a shaped button, characterized by, Comprising An upper mold, a plurality of injection zones are arranged on the upper mold, a plurality of first mold cavities are arranged in the injection zones, a flow channel is arranged in the injection zone, and the flow channel is communicated with the first mold cavity; A lower mold, a plurality of slot positions are arranged on the lower mold, a limiting seat is slidably connected in the slot position, two first inclined surfaces are arranged on the limiting seat, and a plurality of bolts are connected with the lower mold in a matched mode, and the bolts are rotatably connected with the limiting seat in the slot position; A plurality of mold splitting mechanisms, the mold splitting mechanism comprises a connecting seat and two symmetrical mold splitting modules, the connecting seat is slidably connected with the limiting seat, a spring is arranged between the connecting seat and the limiting seat, two mold splitting modules are slidably connected with the two sides of the connecting seat respectively, an elastic member is fixedly connected with the two sides of the connecting seat, the elastic member is fixedly connected with the mold splitting module, a plurality of second mold cavities and a plurality of third mold cavities are arranged on the mold splitting module, the third mold cavities are communicated with the second mold cavities, and a second inclined surface is arranged on the mold splitting module; The upper mold cover is arranged on the lower mold, the injection zone is in contact with the mold splitting module, and the first inclined surface is in contact with the second inclined surface.

2. A mold for injection molding a shaped button as defined in claim 1, wherein, A plurality of exhaust channels are arranged on the mold splitting module, the exhaust channels are communicated with the third mold cavities, a plurality of through holes are arranged on the connecting seat, and the through holes are located below the exhaust channels.

3. A mold for injection molding a shaped button as defined in claim 2, wherein, A plurality of first sliding rods are fixedly connected with the connecting seat, the first sliding rods penetrate through the connecting seat, two ends of the first sliding rods are slidably connected with the two mold splitting modules respectively, a plurality of second sliding rods are fixedly connected with the connecting seat, the second sliding rods penetrate through the limiting seat, the second sliding rods are slidably connected with the limiting seat, and the springs are a plurality of springs.

4. A mold for injection molding a shaped button as defined in claim 3, wherein, An open slot is arranged on the mold splitting module, and the connecting seat is located in the open slot.

5. A mold for injection molding a shaped button as defined in claim 4, wherein, The elastic member is an oval spring sheet, mounting grooves are arranged on the two sides of the connecting seat and in the open slot, connecting columns extend in the mounting grooves, a plurality of connecting holes penetrate through the elastic member, the elastic member is clamped into the mounting groove, and the connecting columns are clamped into the connecting holes and fixedly connected.

6. A mold for injection molding a shaped button as defined in claim 5, wherein, A plurality of guide rails extend on the two sides of the inner wall of the slot position, a plurality of sliding grooves are arranged on the two sides of the limiting seat, and the guide rails are slidably connected with the sliding grooves.

7. A mould for injection moulding a shaped button according to any one of claims 1 or 6, wherein, A plurality of positioning holes penetrate through the upper mold, and a plurality of positioning columns extend on the lower mold and are slidably inserted into the positioning holes.

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