CN118181668A - Miniature core-pulling injection mold for plastic car lamp bracket - Google Patents

Abstract

The invention relates to a miniature core-pulling injection mold for a plastic car lamp bracket, which comprises an upper mold body and a lower mold body, wherein the upper mold body comprises an upper fixed plate and a fixed mold plate, the lower mold body comprises a lower fixed plate, a plurality of mold legs, a movable mold plate and an ejection mechanism, a molding insert is arranged on the movable mold plate, a first molding groove is formed in the molding insert, a first chute is formed in the bottom wall of the first molding groove, a first molding block is slidably connected in the first chute, two first chutes are formed in the side wall of the first molding block, first sliding blocks are slidably connected in the two first chutes, second molding blocks for molding clamping grooves are arranged on the surfaces, away from each other, of the two first sliding blocks, two second chutes are formed in the side wall of the first chute, limiting blocks are arranged at the bottoms of the two first sliding blocks, the two limiting blocks are slidably connected in the two second sliding grooves respectively, and a first driving part is also arranged on the movable mold plate. The invention ensures the clamping groove forming and solves the problem of demolding of the lamp bead mounting seat.

Description

Miniature core-pulling injection mold for plastic car lamp bracket

Technical Field

The invention relates to the field of molds, in particular to a miniature core-pulling injection mold for a plastic car lamp bracket.

Background

The utility model provides a plastics car light support, includes support body 10, and support body 10's back is equipped with fixed muscle 101 and a lamp pearl mount pad 102, is equipped with a plurality of assembly groove 103 on the fixed muscle 101, has seted up two draw-in grooves 104 on the lamp pearl mount pad 102, and two draw-in grooves 104 set up relatively. After the injection molding of the bracket body 10, the two clamping grooves 104 and the molding piece on the mold for molding the clamping grooves 104 form a back-off structure to affect the demolding of the bracket body 10, so that the problem of how to release the back-off structure between the two clamping grooves 104 and the molding piece while molding the two clamping grooves 104 is ensured.

Disclosure of Invention

The application provides a miniature core-pulling injection mold for a plastic car lamp bracket, which ensures the molding of a clamping groove and solves the problem of demolding of a lamp bead mounting seat.

The application provides a miniature core-pulling injection mold for a plastic car lamp bracket, which adopts the following technical scheme:

The utility model provides a miniature loose core injection mold of plastics car light support, includes upper die body and lower die body, the upper die body includes fixed plate and fixed die plate, the lower die body includes lower fixed plate, a plurality of mould foot, template and ejection mechanism, be equipped with the shaping insert that is used for shaping the support body on the template, first shaping groove has been seted up on the shaping insert, first spout has been seted up on the diapire of first shaping groove, sliding connection has first shaping piece in the first spout, two first chute have been seted up on the lateral wall of first shaping piece, two distance between the first chute from the top of two to the bottom of two gradually increases, two the diameter of first chute all reduces gradually from the tank bottom to the notch, two all sliding connection has first slider in the first chute, two all be equipped with the second shaping piece that is used for shaping draw-in groove on the lateral wall of first spout, two the bottom of first slider all is equipped with the stopper and slides respectively and connect in two shaping piece, two shaping piece and two shaping piece are used for in the first shaping mould die carrier, two shaping piece are equipped with two shaping piece and two mould seat die carrier, two shaping piece are used for in the first shaping mould.

Through adopting above-mentioned technical scheme, after the support body is moulded plastics and is accomplished, first drive division control first shaping piece motion gets into first spout, under the cooperation of two stopper and two second spouts, can drive two first sliders through two first chute when first shaping piece motion gets into first spout and move near each other, two draw-in grooves can also be kept away from to two second shaping pieces when two first sliders move near each other, two last second shaping pieces can break away from two draw-in grooves completely, release draw-in groove and second shaping piece's back-off structure.

Preferably, the first driving part comprises a pull rod, a pull block and an oil cylinder, wherein the pull block and the oil cylinder are arranged on the pull rod, a third chute communicated with the first chute is formed in the forming insert, the pull rod is connected in the third chute in a sliding mode, the oil cylinder is arranged on the movable mould plate and moves by driving the pull rod, the distance from one end, close to the oil cylinder, of the pull block to the lower fixing plate is gradually reduced from one end, far away from the oil cylinder, of the pull block, the bottom end of the first forming block extends into the third chute, a second chute is formed in the bottom end of the first forming block, the pull block is connected in the second chute in a sliding mode, and one end, close to the oil cylinder, of the pull block is positioned in the second chute in a mould closing mode.

Through adopting above-mentioned technical scheme, after the support body is moulded plastics and is accomplished, hydro-cylinder pulling pull rod moves and keeps away from the third spout, can drive first shaping piece motion entering first spout through the cooperation of pull piece and second chute when the pull rod moves. After the bracket body is taken down from the die, the oil cylinder pushes the pull rod to move into the third chute, and the pull rod can drive the first forming block to move away from the first chute through the cooperation of the pull block and the second chute, so that the first forming block stretches into the first forming groove.

Preferably, a fourth sliding groove communicated with a third sliding groove is formed in the forming insert, a second sliding block is connected in the fourth sliding groove in a sliding manner, the first forming groove, the first sliding groove and the two second sliding grooves are all formed in the second sliding block, a first plane, a guide inclined plane and a second plane are formed in the pull rod, the guide inclined plane is communicated with the first plane and the second plane, the inclination angle of the guide inclined plane is identical to that of the pull block, the first plane is located between the second plane and the oil cylinder, and the bottom end of the second sliding block is in contact with the first plane in a die closing state.

By adopting the technical scheme, after the die is opened after injection molding, the second sliding block is in a static state under the limit of the first plane when the oil cylinder pulls the pull rod to move away from the third sliding groove, and the pull block can drive the first forming movement to enter the first sliding groove. Along with the continuous motion of pull rod, the second slider can contact with the guide inclined plane, under the combined action of guide inclined plane and pull block, second slider and first shaping piece can move jointly and keep away from the lamp pearl mount pad that has been formed for thereby the second slider keeps away from the lamp pearl mount pad and releases the back-off structure between second slider and the lamp pearl mount pad, and this in-process second slider and first shaping piece can keep relatively static, and finally second slider can move to on the second plane, and the second slider breaks away from the lamp pearl mount pad completely this moment. After the injection molding support body is taken down from the die, the oil cylinder pushes the pull rod to move and reset, in the pull rod resetting process, the second sliding block moves and resets together with the first molding block, the second sliding block moves to the first plane at first, and at the moment, the second sliding block moves to the initial position and also lifts, but the first molding block does not move to the initial position yet. Then, with the continuous resetting of the pull rod, the first forming block moves into the first forming groove through the cooperation of the pull block and the second chute, and finally moves to reset.

Preferably, the both sides of the bottom of second slider are equipped with first wear-resisting piece and second wear-resisting piece respectively, first wear-resisting piece is used for being inconsistent with first plane, second plane and guide slope, still seted up the mounting groove on the lateral wall of third spout, the mounting groove is located the below of fourth spout and communicates the fourth spout, be equipped with the gag lever post in the mounting groove, the gag lever post is located the motion route of second slider, the top surface and the second plane parallel and level of gag lever post.

By adopting the technical scheme, the abrasion-resistant block can be arranged to effectively avoid abrasion in the movement process of the second sliding block. The limiting rod is arranged to limit the second sliding block, so that the second sliding block is prevented from moving downwards after moving to the second plane.

Preferably, the second slider includes first assembly piece and second assembly piece, two the second spout is located first assembly piece and second assembly piece respectively, all seted up the cavity on interconnect's the one side on first assembly piece and the second assembly piece, when first assembly piece and second assembly piece interconnect, two cavities intercommunication each other form the exhaust chamber, set up the exhaust groove of intercommunication first shaping chamber on the diapire of exhaust chamber.

Through adopting above-mentioned technical scheme, make things convenient for the processing of second slider, make simultaneously that hot melt plastics fill the air in the first shaping chamber can get into the exhaust chamber through the exhaust groove when first shaping chamber to the phenomenon of stranded gas appears in the prevention first shaping intracavity, makes guarantee lamp pearl mount pad shaping complete.

Preferably, the exhaust cavity is communicated with the first chute, a rubber air bag is fixedly connected to the bottom wall of the exhaust cavity, an air outlet of the rubber air bag is communicated with the exhaust groove, a pressing plate is arranged on the first forming block, the pressing plate is connected with the top of the rubber air bag, and in a die closing state, the pressing plate is in contact with the top wall of the exhaust cavity.

Through adopting above-mentioned technical scheme, when first shaping piece motion got into first spout, first shaping piece can drive rubber gasbag compression through the briquetting, can be with air during the rubber gasbag compression through exhaust duct impress between lamp pearl mount pad and the second slider to remove the adhesion of lamp pearl mount pad and second slider, be difficult to the draw when making the second slider motion and hinder the lamp pearl mount pad. And the movement of the first molding block can be limited through the cooperation of the pressing block and the exhaust cavity, so that the first molding block is prevented from excessively extending into the first molding groove when the movement of the first molding block is reset.

Preferably, the fixed die plate is provided with a limiting column, the movable die plate is provided with a first slot for inserting the limiting column, when the die is assembled, the limiting column is inserted into the first slot, the bottom end of the limiting column is positioned at one side of the pull rod, which is close to the oil cylinder, and the bottom end of the limiting column is propped against the pull rod.

Through adopting above-mentioned technical scheme, when the mould compound die, the motion of pull rod can be restricted to spacing post to second slider and first shaping piece can not be because of the pressure of moulding plastics retreating when making the mould plastics, prevent appearing the section difference between lamp pearl mount pad and the support body.

Preferably, the second molding cavity for molding the fixing rib is formed in the molding insert, a plurality of fifth sliding grooves are formed in the molding insert, a plurality of communication grooves for communicating the plurality of fifth sliding grooves with the second molding cavity are formed in the molding insert, a plurality of third sliding blocks are connected in the fifth sliding grooves in a sliding mode, core pulling blocks for molding the assembly grooves are arranged on the third sliding blocks, a plurality of core pulling blocks are connected in the plurality of communication grooves in a sliding mode respectively, and a plurality of second driving parts for controlling the movement of the third sliding blocks are further arranged on the fixed die plate.

Through adopting above-mentioned technical scheme, when the mould compound die, a plurality of second drive portions drive a plurality of third sliders towards the motion of second molding die cavity for a plurality of loose core blocks stretch into in the second molding die cavity. After the die is opened, the second driving parts drive the third sliding blocks to move away from the second molding cavity, so that the core pulling blocks move away from the second molding cavity and the back-off structure of the assembly grooves is relieved.

Preferably, the second driving part comprises a plug rod and inclined plug blocks arranged at the bottom of the plug rod, a plurality of third inclined slots for the inclined plug blocks to insert are formed in the third sliding blocks, the distance from the third inclined slots to the lower fixing plate is gradually reduced from one end close to the second molding cavity to one end far away from the second molding cavity, the third inclined slots are in one-to-one correspondence with the inclined plug blocks, the inclined angles of the inclined plug blocks are respectively identical with those of the corresponding third inclined slots, a plurality of second slots are formed in the side walls of the fifth sliding slots along the die opening direction of the die, the top ends of the plug rods are fixed on the fixed die plate, a plurality of second slots are inserted into the plug rods during die assembly, a plurality of third inclined slots are respectively inserted into the inclined plug blocks, and one end of each core-pulling block, which corresponds to the third sliding blocks, extends into the second molding cavity.

Through adopting above-mentioned technical scheme, the injection molding opportunity is pushed down the die body and is moved towards last die body when the mould compound die, and a plurality of slope inserts can insert a plurality of third chute respectively in this in-process at first, later along with the continuation motion of movable mould board, a plurality of slope inserts can further insert the third chute and promote a plurality of third slider motion for a plurality of loose core piece motions get into the second die cavity, then the injection molding machine begins to inject the plastics molded product into the mould. After the product is molded, the injection molding machine controls the lower die body to move away from the upper die body, in the process, if the rod inclined inserting block is separated from the third inclined grooves, the third sliding blocks move away from the second molding cavity, and the third sliding blocks can drive the core pulling blocks to move away from the second molding cavity when moving away from the second molding cavity.

Preferably, a plurality of the third sliding blocks are all sleeved with mounting blocks, a plurality of springs are arranged in the fifth sliding grooves, one ends of the springs are respectively propped against the side walls of the fifth sliding grooves close to the second molding cavity, the other ends of the springs are propped against the mounting blocks, the springs are always in a compressed state, and when the mold is opened, the springs respectively prop and press the third sliding blocks on the side walls of the fifth sliding grooves far away from the corresponding communication grooves, and one ends of the inclined inserting blocks close to the movable mold plates are respectively located on the movement paths of the third inclined grooves.

Through adopting above-mentioned technical scheme, set up a plurality of springs and make a plurality of slope inserts can insert in a plurality of third chute smoothly when the mould compound die.

The technical effects of the invention are mainly as follows:

1. The invention realizes the interval core pulling of the first molding block and the second sliding block through the movement of the pull rod;

2. the first molding cavity is not easy to trap air, and the lamp bead mounting seat is full in molding during injection molding;

3. The invention utilizes the action of opening and closing the die to control whether the core-pulling blocks move into the second molding cavity.

Drawings

Fig. 1 is a schematic structural view of a stent body.

Fig. 2 is a schematic view of the structure of the mold in the mold closed state of the present application.

Fig. 3 is a schematic view of the lower mold part and two insert pins of fig. 2 inserted into corresponding second slots.

Fig. 4 is a schematic view of the structure of the molding insert, the second slider, the first molding block, the first driving portion, the third slider, the second driving portion, and the stopper post of fig. 2 in a mold closing state.

Fig. 5 is a partial cross-sectional view of the molding insert of fig. 4.

Fig. 6 is a schematic structural view of the second slider and the first molding block in fig. 5.

FIG. 7 is a cross-sectional view of the second slider and the first molding block of FIG. 6 taken along line A-A.

Fig. 8 is a partial enlarged view at B in fig. 7.

Fig. 9 is a schematic view of the structure of the first fitting block, the first molding block, the pressing plate, and the rubber bladder of fig. 6.

Fig. 10 is a schematic view of the structure of the first fitting block in fig. 6.

Fig. 11 is a schematic view of the first molding block of fig. 6.

Fig. 12 is a schematic structural view of the first driving part in fig. 5.

Fig. 13 is a partial cross-sectional view of the molding insert of fig. 4.

Fig. 14 is a partial enlarged view at C in fig. 13.

Fig. 15 is a schematic structural view of the third slider, the core-pulling block, and the third chute in fig. 13.

Fig. 16 is a schematic view of the structure of the insert rod and the inclined insert block of fig. 13.

Reference numerals: 1. an upper die body; 11. an upper fixing plate; 12. a stationary mold plate; 121. a limit column; 2. a lower die body; 21. a lower fixing plate; 22. a mold foot; 23. a movable template; 231. a first slot; 3. forming an insert; 31. a third chute; 32. a fourth chute; 33. a mounting groove; 34. a second molding cavity; 35. a fifth chute; 36. a communication groove; 37. a second slot; 4. a second slider; 41. a first molding groove; 42. a first chute; 43. a second chute; 44. a first assembly block; 45. a second assembly block; 46. a cavity; 47. an exhaust chamber; 48. an exhaust groove; 49. a rubber air bag; 5. a first molding block; 51. a first chute; 52. a first slider; 53. a second molding block; 54. a limiting block; 55. a second chute; 56. a pressing plate; 6. a first driving section; 61. a pull rod; 62. pulling blocks; 63. an oil cylinder; 7. a third slider; 71. a core pulling block; 72. a third chute; 73. a mounting block; 8. a second driving section; 81. a rod; 82. an inclined insert; 9. a spring; 10. a bracket body; 101. fixing ribs; 102. a lamp bead mounting seat; 103. an assembly groove; 104. a clamping groove; 131. a first molding cavity; 132. a first plane; 133. a guide slope; 134. a second plane; 135. a first wear block; 136. a second wear block; 137. a limit rod; 138. and (5) connecting a block.

Detailed Description

The present application will be further described in detail below with reference to the accompanying drawings, so that the technical solution of the present application can be more easily understood and grasped.

Referring to fig. 2, a plastic car lamp bracket micro core-pulling injection mold of the present embodiment comprises an upper mold body 1 and a lower mold body 2, wherein the upper mold body 1 comprises an upper fixing plate 11 and a fixed mold plate 12, the lower mold body 2 comprises a lower fixing plate 21, a plurality of mold legs 22 fixed on the lower fixing plate 21, a movable mold plate 23 fixed on the plurality of mold legs 22 and an ejection mechanism, and the ejection mechanism comprises two top plates and a plurality of ejector pins (not shown in the ejection mechanism diagram) fixed on the top plates.

Referring to fig. 2 to 6 and 9 to 11, two molding inserts 3 for molding the holder body 10 are provided on the movable die plate 23. The forming insert 3 is provided with a fourth chute 32, a second sliding block 4 for forming the lamp bead mounting seat 102 is slidably connected in the fourth chute 32, a first forming groove 41 is formed in the top end of the second sliding block 4, a first chute 42 is formed in the bottom wall of the first forming groove 41, and a first forming block 5 is slidably connected in the first chute 42. Two first chute 51 are arranged on the side wall of the first forming block 5, the distance between the two first chute 51 is gradually increased from the top end of the two first chute to the bottom end of the two first chute, and the diameters of the two first chute 51 are gradually reduced from the bottom of the groove to the notch.

Referring to fig. 6 to 11, the first slide blocks 52 are slidably connected in the two first chute 51, and the second molding blocks 53 for molding the card slots 104 are provided on the surfaces of the two first slide blocks 52 away from each other. Two second sliding grooves 43 are formed in the side wall of the first sliding groove 42 along the direction perpendicular to the length of the first sliding groove 42, limiting blocks 54 are arranged at the bottoms of the two first sliding blocks 52, and the two limiting blocks 54 are respectively connected in the two second sliding grooves 43 in a sliding mode. In the mold closing state, the first molding block 5 extends into the first molding groove 41, a first molding cavity 131 for molding the lamp bead mounting seat 102 is formed between the first molding block 5 and the first molding groove 41, and the two second molding blocks 53 are positioned in the first molding cavity 131.

Referring to fig. 6 and 10, the second slider 4 includes a first fitting block 44 and a second fitting block 45, and the first fitting block 44 and the second fitting block 45 are combined together by bolts to become the second slider 4. The two second runners 43 are located on the first and second mounting blocks 44, 45, respectively, the first molding slot 41 and the first runner 42 being half on the first mounting block 44 and the other half on the second mounting block 45. One side of the first assembling block 44 and the second assembling block 45, which are connected with each other, are provided with a cavity 46, when the first assembling block 44 and the second assembling block 45 are connected with each other, the two cavities 46 are mutually communicated to form an exhaust cavity 47, and the bottom wall of the exhaust cavity 47 is provided with an exhaust groove 48 communicated with the first molding cavity 131.

Referring to fig. 6, 9 and 10, the exhaust cavity 47 is communicated with the first chute 42, a rubber air bag 49 is fixedly connected to the bottom wall of the exhaust cavity 47, air outlets of the rubber air bag 49 are all located at the lower end of the rubber air bag 49 and are communicated with the exhaust groove 48, a pressing plate 56 is arranged on the first molding block 5, the pressing plate 56 stretches into the exhaust cavity 47 and is connected with the top of the rubber air bag 49, and in a mold closing state, the two pressing plates 56 respectively collide with top walls of the two exhaust cavities 47.

Referring to fig. 2-5 and 12, the movable mold plate 23 is further provided with a first driving part 6 for driving the first molding block 5 to move, the first driving part 6 comprises a pull rod 61, a pull block 62 arranged on the pull rod 61, and an oil cylinder 63, the molding insert 3 is provided with a third chute 31 communicated with the fourth chute 32, and the first chute 42 is also communicated with the third chute 31. The pull rod 61 is slidingly connected in the third chute 31, the oil cylinder 63 is fixed on the movable template 23 and drives the pull rod 61 to move, and an output shaft of the oil cylinder 63 is fixedly connected with the pull rod 61. The distance from the pull block 62 to the lower fixing plate 21 is gradually reduced from one end close to the oil cylinder 63 to one end far away from the oil cylinder 63, the bottom end of the first forming block 5 stretches into the third chute 31, the bottom end of the first forming block 5 is provided with the second chute 55, the inclination angle of the second chute 55 is the same as that of the pull block 62, the pull block 62 is connected in the second chute 55 in a sliding manner, and one end, close to the oil cylinder 63, of the pull block 62 is positioned in the second chute 55 in a die closing state.

Referring to fig. 12, the pull rod 61 is provided with a first plane 132, a guiding inclined plane 133 and a second plane 134, the guiding inclined plane 133 is communicated with the first plane 132 and the second plane 134, the inclination angle of the guiding inclined plane 133 is the same as that of the pull block 62, the first plane 132 is located between the second plane 134 and the oil cylinder 63, and the bottom end of the second slide block 4 is abutted against the first plane 132 in the mold closing state.

Referring to fig. 5, 6 and 13, a first wear-resistant block 135 and a second wear-resistant block 136 are respectively mounted on two sides of the bottom of the second slider 4, two ends of the first wear-resistant block 135 are respectively connected to the first assembly block 44 and the second assembly block 45, and two ends of the second wear-resistant block 136 are respectively connected to the first assembly block 44 and the second assembly block 45. The first wear-resisting block 135 is used for propping against the first plane 132, the second plane 134 and the guiding inclined plane 133, the side wall of the third sliding groove 31 is also provided with a mounting groove 33, the mounting groove 33 is positioned below the fourth sliding groove 32 and communicated with the fourth sliding groove 32, a connecting block 138 is fixed in the mounting groove 33, a limiting rod 137 is fixed on the connecting block 138, the limiting rod 137 is positioned on the moving path of the second sliding block 4, and the top surface of the limiting rod 137 is flush with the second plane 134. The first wear-resistant block 135 is made of graphite copper material and has excellent self-lubricating performance.

Referring to fig. 3, 4 and 12, two limiting posts 121 are fixedly connected to the fixed mold plate 12, two first slots 231 for inserting the limiting posts 121 are formed in the movable mold plate 23, when the mold is closed, the two limiting posts 121 are inserted into the two first slots 231, the bottom ends of the limiting posts 121 are located on one side of the pull rod 61 close to the oil cylinder 63, and the bottom ends of the limiting posts 121 are abutted against the pull rod 61.

Referring to fig. 13 and 14, the forming insert 3 is provided with a second forming cavity 34 for forming the fixing rib 101, the forming insert 3 is provided with a plurality of fifth sliding grooves 35, the forming insert 3 is also provided with a plurality of communication grooves 36 for communicating the plurality of fifth sliding grooves 35 with the second forming cavity 34, the plurality of fifth sliding grooves 35 are respectively connected with a third sliding block 7 in a sliding manner, the plurality of third sliding blocks 7 are respectively provided with a core pulling block 71 for forming the assembly groove 103, and the plurality of core pulling blocks 71 are respectively connected in the plurality of communication grooves 36 in a sliding manner.

Referring to fig. 13 to 16, the fixed platen 12 is further provided with a plurality of second driving parts 8 for controlling the movement of the third sliders 7. The second driving part 8 comprises an inserting rod 81 fixedly connected to the fixed die plate 12 and an inclined inserting block 82 fixed at the bottom of the inserting rod 81, a plurality of third sliding blocks 7 are respectively provided with a third inclined groove 72 for inserting the inclined inserting block 82, the distance from the third inclined groove 72 to the lower fixed plate 21 gradually decreases from one end close to the second forming cavity 34 to one end far away from the second forming cavity 34, the plurality of third inclined grooves 72 are in one-to-one correspondence with the plurality of inclined inserting blocks 82, the inclined angles of the plurality of inclined inserting blocks 82 are the same as the inclined angles of the corresponding third inclined grooves 72, second inserting grooves 37 are formed in the side walls of the plurality of fifth sliding grooves 35 along the die opening direction of the die, during die assembly, the plurality of inserting rods 81 are inserted into the plurality of second inserting grooves 37, the plurality of inclined inserting blocks 82 are respectively inserted into the plurality of third inclined grooves 72, and one ends of the plurality of core-pulling blocks 71 far away from the corresponding third sliding blocks 7 are stretched into the second forming cavity 34.

Referring to fig. 13-16, the outer parts of the third sliding blocks 7 are all sleeved with mounting blocks 73, springs 9 are arranged in the fifth sliding grooves 35, one ends of the springs 9 respectively lean against the side walls of the fifth sliding grooves 35 close to the second molding cavities 34, the other ends of the springs 9 lean against the mounting blocks 73, the springs 9 are always in a compressed state, when the mold is opened, the springs 9 respectively lean against the third sliding blocks 7 on the side walls of the fifth sliding grooves 35 far away from the corresponding communication grooves 36, and one ends of the inclined inserting blocks 82 close to the movable mold plates 23 are respectively located on the movement paths of the third inclined grooves 72.

Referring to fig. 2-16, the specific injection molding of the mold of this embodiment is as follows:

the mold is fixed on the injection molding machine by using a gantry crane, the injection molding machine controls the upper mold body 1 and the lower mold body 2 to be separated, whether the molded parts such as the second sliding block 4 can normally move or not is checked, and then the injection molding machine controls the lower mold body 2 to move towards the upper mold body 1.

During the mold closing process, the plurality of inclined insert blocks 82 are respectively inserted into the plurality of third inclined grooves 72, then along with the continuous movement of the movable mold plate 23, the plurality of inclined insert blocks 82 are further inserted into the third inclined grooves 72 and push the plurality of third slide blocks 7 to move towards the second molding cavity 34, and during the movement process of the plurality of third slide blocks 7, the plurality of springs 9 are compressed under stress, and the plurality of core pulling blocks 71 move into the second molding cavity 34.

In the synchronous mould closing process, two spacing posts 121 are inserted into two first slots 231, and the movement of the pull rod 61 can be limited by the spacing posts 121, so that the second sliding block 4 and the first forming block 5 can not retreat due to injection molding pressure during injection molding of the mould, and the step difference between the lamp bead mounting seat 102 and the bracket body 10 is prevented. After the mold is completely closed, the injection molding machine can start to inject hot melt plastic into the mold to mold the product.

After the product is molded, the injection molding machine controls the lower die body 2 to move away from the upper die body 1 to open the die, in the process, the plurality of inclined inserting blocks 82 are separated from the plurality of third inclined grooves 72 to enable the plurality of third sliding blocks 7 to move away from the second molding cavity 34, and the plurality of core pulling blocks 71 are driven to move away from the second molding cavity 34 when the plurality of third sliding blocks 7 move away from the second molding cavity 34, so that the back-off structure of the plurality of core pulling blocks 71 and the plurality of assembly grooves 103 is relieved. After the mold is completely opened, the springs 9 press the third sliding blocks 7 against the side walls of the fifth sliding grooves 35 away from the corresponding communication grooves 36, so that the inclined inserting blocks 82 can be smoothly inserted into the third inclined grooves 72 when the mold is closed next time. The two limiting posts 121 are also disengaged from the two first slots 231 during the mold opening process.

After the mold is completely opened, the oil cylinder 63 pulls the pull rod 61 to move away from the third sliding groove 31, the second sliding block 4 is in a static state under the limit of the first plane 132, and the pull block 62 drives the first molding block 5 to move into the first sliding groove 42. Under the cooperation of the two limiting blocks 54 and the two second sliding grooves 43, when the first forming block 5 moves into the first sliding groove 42, the two first sliding blocks 52 are driven to move close to each other through the two first sliding grooves 51, when the two first sliding blocks 52 move close to each other, the two second forming blocks 53 are also far away from the two clamping grooves 104, and finally the two second forming blocks 53 are completely separated from the two clamping grooves 104, so that the back-off structure of the clamping grooves 104 and the second forming blocks 53 is released.

Synchronous when first shaping piece 5 moves into first spout 42, first shaping piece 5 can drive two rubber air bags 49 through two clamp plates 56 and compress, can push in the air between lamp pearl mount pad 102 and the second slider 4 through two exhaust grooves 48 when two rubber air bags 49 compress to relieve the adhesion of lamp pearl mount pad 102 and second slider 4, make the second slider 4 be difficult to the damage lamp pearl mount pad 102 that pulls when moving.

When the second molding block 53 is separated from the two clamping grooves 104, the second slider 4 contacts the guiding inclined surface 133. With the continuous movement of the pull rod 61, under the combined action of the guide inclined plane 133 and the pull block 62, the second slider 4 and the first molding block 5 can relatively remain stationary, but the second slider 4 can move into the fourth chute 32, so that the second slider 4 is far away from the lamp bead mounting seat 102, finally the first wear-resistant block 135 can move onto the second plane 134, the second wear-resistant block 136 can contact with the limiting rod 137, at this time, the second slider 4 is completely separated from the lamp bead mounting seat 102, the back-off structure between the second slider 4 and the lamp bead mounting seat 102 is completely released, and the lamp bead mounting seat 102 can be smoothly demolded.

The ejector mechanism is then activated to eject the injection molded carrier body 10 from the molding insert 3, and the injection molded carrier body 10 is then removed from the mold by the injection operator. After the bracket body 10 is taken off from the die, the oil cylinder 63 pushes the pull rod 61 to move and reset, in the process of resetting the pull rod 61, the second sliding block 4 moves and resets together with the first forming block 5, the second sliding block 4 moves onto the first plane 132 first, at this time, the second sliding block 4 moves to the initial position, but the first forming block 5 does not move to the initial position yet. Then, with continued resetting of the pull rod 61, the first molding block 5 moves into the first molding groove 41 by the cooperation of the pull block 62 and the second chute 55, and finally moves to reset. The two first sliders 52 and the two rubber bladders 49 are also moved back during the movement back of the first molding block 5. After the reset of all the parts is completed, the injection molding machine can control the mold to be closed again to perform the injection molding of the next group of bracket bodies 10.

Of course, the above is only a typical example of the application, and other embodiments of the application are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the application claimed.

Claims (10)

1. The utility model provides a miniature injection mold of loosing core of plastics car light support, includes last die body (1) and lower die body (2), go up die body (1) including last fixed plate (11) and fixed die plate (12), lower die body (2) are including fixed plate (21), a plurality of mould foot (22), movable mould board (23) and ejection mechanism down, be equipped with on movable mould board (23) and be used for shaping insert (3) of support body (10), its characterized in that: a first molding groove (41) is formed in the molding insert (3), a first sliding groove (42) is formed in the bottom wall of the first molding groove (41), a first molding block (5) is slidably connected in the first sliding groove (42), two first sliding grooves (51) are formed in the side wall of the first molding block (5), the distance between the two first sliding grooves (51) is gradually increased from the top end of the two first sliding grooves to the bottom end of the two first sliding grooves (51), the diameters of the first sliding grooves (51) are gradually reduced from the groove bottom to the groove opening, first sliding blocks (52) are slidably connected in the two first sliding grooves (51), second molding blocks (53) for molding clamping grooves (104) are formed in the surfaces, away from each other, of the first sliding blocks (52), two second sliding grooves (43) are formed in the side wall of the first sliding groove (42), limiting blocks (54) are respectively slidably connected to the bottom ends of the two first sliding blocks (52), and the first sliding blocks (43) are further provided with first molding blocks (5) which are driven by a first molding die (5), a first molding cavity (131) for molding the lamp bead mounting seat (102) is formed between the first molding block (5) and the first molding groove (41), and the two second molding blocks (53) are positioned in the first molding cavity (131).

2. The plastic vehicle lamp bracket micro core-pulling injection mold according to claim 1, wherein: the first driving part (6) comprises a pull rod (61), a pull block (62) arranged on the pull rod (61) and an oil cylinder (63), a third chute (31) communicated with the first chute (42) is formed in the forming insert (3), the pull rod (61) is connected in the third chute (31) in a sliding mode, the oil cylinder (63) is arranged on the movable mould plate (23) and moves by driving the pull rod (61), the distance from one end, close to the oil cylinder (63), of the pull block (62) to the lower fixed plate (21) is gradually reduced to one end far away from the oil cylinder (63), the bottom end of the first forming block (5) stretches into the third chute (31), a second chute (55) is formed in the bottom end of the first forming block (5), the pull block (62) is connected in the second chute (55) in a sliding mode, and one end, close to the oil cylinder (63), of the pull block (62) is located in the second chute (55) in a mould closing mode.

3. The plastic lamp holder micro core-pulling injection mold according to claim 2, wherein: the forming insert is characterized in that a fourth sliding groove (32) communicated with a third sliding groove (31) is formed in the forming insert (3), a second sliding block (4) is connected in the fourth sliding groove (32) in a sliding manner, the first forming groove (41), the first sliding groove (42) and the two second sliding grooves (43) are all formed in the second sliding block (4), a first plane (132), a guide inclined plane (133) and a second plane (134) are formed in the pull rod (61), the guide inclined plane (133) is communicated with the first plane (132) and the second plane (134), the inclination angle of the guide inclined plane (133) is the same as that of the pull block (62), the first plane (132) is located between the second plane (134) and the oil cylinder (63), and the bottom end of the second sliding block (4) is in a die closing state and is in contact with the first plane (132).

4. A plastic vehicle lamp bracket micro core-pulling injection mold according to claim 3, wherein: the both sides of the bottom of second slider (4) are equipped with first wear-resisting piece (135) and second wear-resisting piece (136) respectively, first wear-resisting piece (135) are used for inconsistent with first plane (132), second plane (134) and guide inclined plane (133), mounting groove (33) have still been seted up on the lateral wall of third spout (31), mounting groove (33) are located the below of fourth spout (32) and communicate fourth spout (32), be equipped with gag lever post (137) in mounting groove (33), gag lever post (137) are located the motion path of second slider (4), the top surface and the second plane (134) parallel and level of gag lever post (137).

5. A plastic vehicle lamp bracket micro core-pulling injection mold according to claim 3, wherein: the second sliding block (4) comprises a first assembling block (44) and a second assembling block (45), the two second sliding grooves (43) are respectively arranged on the first assembling block (44) and the second assembling block (45), cavities (46) are respectively formed in one surface of the first assembling block (44) and one surface of the second assembling block (45) which are mutually connected, when the first assembling block (44) and the second assembling block (45) are mutually connected, the two cavities (46) are mutually communicated to form an exhaust cavity (47), and an exhaust groove (48) communicated with the first forming cavity (131) is formed in the bottom wall of the exhaust cavity (47).

6. The plastic lamp holder micro core-pulling injection mold according to claim 5, wherein: the air exhaust cavity (47) is communicated with the first sliding groove (42), a rubber air bag (49) is fixedly connected to the bottom wall of the air exhaust cavity (47), an air outlet of the rubber air bag (49) is communicated with the air exhaust groove (48), a pressing plate (56) is arranged on the first forming block (5), the pressing plate (56) is connected with the top of the rubber air bag (49), and in a die closing state, the pressing plate (56) is in contact with the top wall of the air exhaust cavity (47).

7. The plastic lamp holder micro core-pulling injection mold according to claim 2, wherein: the fixed die plate (12) is provided with a limiting column (121), the movable die plate (23) is provided with a first slot (231) for the limiting column (121) to be inserted into, when the die is closed, the limiting column (121) is inserted into the first slot (231), the bottom end of the limiting column (121) is located at one side, close to the oil cylinder (63), of the pull rod (61), and the bottom end of the limiting column (121) abuts against the pull rod (61).

8. The plastic vehicle lamp bracket micro core-pulling injection mold according to claim 1, wherein: the novel plastic molding die comprises a molding insert (3), a second molding cavity (34) for molding a fixing rib (101) is formed in the molding insert (3), a plurality of fifth sliding grooves (35) are formed in the molding insert (3), a plurality of communication grooves (36) for communicating the plurality of fifth sliding grooves (35) with the second molding cavity (34) are formed in the molding insert (3), a plurality of third sliding blocks (7) are slidably connected in the fifth sliding grooves (35), core pulling blocks (71) for molding assembly grooves (103) are arranged on the third sliding blocks (7), the core pulling blocks (71) are slidably connected in the communication grooves (36) respectively, and a plurality of second driving parts (8) for controlling the movement of the third sliding blocks (7) are further arranged on a fixed die plate (12).

9. The plastic lamp holder micro core-pulling injection mold of claim 8, wherein: the second drive part (8) includes inserted link (81) and locates slope inserted block (82) of inserted link (81) bottom, a plurality of all offer on third slider (7) and supply slope inserted block (82) male third chute (72), the distance of third chute (72) to lower fixed plate (21) is from being close to one end of second shaping chamber (34) to keeping away from one end of second shaping chamber (34) dwindle gradually, a plurality of third chute (72) and a plurality of slope inserted block (82) one-to-one, a plurality of slope inserted block (82) inclination is the same with the inclination of corresponding third chute (72) respectively, a plurality of second slot (37) have all been seted up along the die sinking direction of mould on fifth chute (35) lateral wall, the top of inserted link (81) is fixed on fixed template (12), and during the die assembly, a plurality of inserts a plurality of second slots (37) of inserted link (81), a plurality of slope inserted block (82) insert a plurality of third chute (72) respectively, a plurality of core-pulling blocks (71) correspond in a plurality of second shaping chamber (34) are gone into in a plurality of stretching away from the third slider (7).

10. The plastic lamp holder micro core-pulling injection mold according to claim 9, wherein: a plurality of outside cover of third slider (7) is equipped with installation piece (73), and a plurality of all be equipped with spring (9) in fifth spout (35), a plurality of on the lateral wall that a plurality of fifth spouts (35) are close to second molding die cavity (34) is supported respectively to the one end of spring (9), a plurality of the other end of spring (9) offsets with a plurality of installation piece (73), a plurality of spring (9) are in compression throughout, and during the mould die sinking, a plurality of spring (9) are supported a plurality of third slider (7) respectively and are pressed on the lateral wall that a plurality of fifth spouts (35) keep away from corresponding intercommunication groove (36), a plurality of one end that inclined insert block (82) are close to movable mould board (23) is located the motion route of a plurality of third inclined groove (72) respectively.