CN213082230U

CN213082230U - Large-size automobile back door precise injection mold based on back glue feeding technology

Info

Publication number: CN213082230U
Application number: CN202021316914.6U
Authority: CN
Inventors: 朱海兵
Original assignee: Taizhou Sanpu Mould Co ltd
Current assignee: Taizhou Sanpu Mould Co ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-04-30
Anticipated expiration: 2030-07-07

Abstract

The utility model provides a jumbo size car back door precision injection mold based on technique is glued to back advance belongs to mould technical field. The lower die plate comprises a lower die plate, wherein a forming surface used for being combined to form a forming cavity is arranged at the top of the lower die plate, a convex block structure is arranged on the front side of the forming surface, arc-shaped surfaces are arranged on the tops of the other side walls of the forming surface, the left side and the right side of the forming surface are symmetrically arranged, and a first ejection structure is arranged in the middle of the forming surface. The back on the lower bolster advances gluey subassembly and can advance gluey from the die cavity bottom, advances gluey efficiency that can increase to advance to compare side among the prior art and advance gluey, and can improve the fashioned integrality of product, prevents that the local omission that appears after the product shaping, also can prevent to appear weld line or melting point on the product surface, improves product surface quality.

Description

Large-size automobile back door precise injection mold based on back glue feeding technology

Technical Field

The utility model belongs to the technical field of the mould, a accurate injection mold of jumbo size car back door based on back advances gluey technique is related to.

Background

Automobile back door is generally through the mould casting shaping, along with constantly improving automobile back door accuracy requirement, advance gluey among the prior art when advancing gluey, generally advance gluey through the lateral part to there can not be weld line or weld point on making the product surface after the completion moulds plastics, lead to the surface quality of product unqualified, nevertheless because the shaping area of automobile back door is great, the side advances to glue at first advances to glue efficiency lower, secondly the product advances to glue the time can not effectively guarantee the wholeness of product.

In order to overcome the defects of the prior art, people continuously explore and propose various solutions, for example, chinese patent discloses a large-area ultrathin plastic part injection mold [ application number: 201010033859.4], comprises a static die consisting of a static die fixing plate, a static die plate and a static die core, and a movable die consisting of a movable die fixing plate, a cushion block, a movable die plate and a movable die core, wherein the static die plate is a thickened static die plate, the cushion block is a whole square thick steel block, the ejection device is a push plate ejection device, the exhaust system comprises a group of exhaust sheets arranged at the bottom of the die cavity, exhaust grooves arranged at the periphery of the die cavity and an exhaust channel connected with the exhaust sheets and the exhaust grooves, and the exhaust channel is provided with a compressed air blowpipe for enabling the exhaust channel to generate negative pressure. The die has high strength and the service life of the die reaches 200 ten thousand times; the air exhaust is smooth, and the bad phenomena of insufficient filling, scorching, air trapping, heavy melting line and the like can not be generated, thereby achieving the purpose of molding the 1429mm2 ultrathin 0.18mm in large area; the push plate ejection device effectively avoids the phenomenon of product package ejection or deformation, but has the defects.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, a jumbo size car back door precision injection mold based on technique is advanced to the back is provided.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model provides a jumbo size car back door precision injection mold based on back advances gluey technique, includes the lower bolster, the lower bolster top be equipped with the shaping face that is used for the combination to form the die cavity, shaping face front side be equipped with the lug structure and all the other lateral walls tops of shaping face all are equipped with the arcwall face, shaping face left and right sides symmetry set up, shaping face middle part be equipped with ejecting structure No. one, the shaping face left and right sides be equipped with ejecting structure No. two, the shaping face left and right sides still is equipped with ejecting structure of a large tracts of land No. two, shaping face keep away from lug structure one side and still be equipped with ejecting structure of a large tracts of land No. two, the lower bolster on still be equipped with the back and advance gluey.

In the large-size automobile back door precise injection mold based on the back glue inlet technology, the back glue inlet assembly comprises a glue inlet plate arranged on the lower side of a lower template, a pouring gate is arranged at the bottom of the glue inlet plate, and a plurality of glue inlet pipes vertically penetrating through the lower template from the bottom of the lower template upwards and connected with a forming cavity are arranged at the top of the glue inlet plate.

In the above-mentioned precision injection mold for a large-size automobile back door based on the back glue feeding technology, the glue feeding pipes have a plurality of groups and are arranged in parallel, and each group of glue feeding pipes comprises three glue feeding pipes which are uniformly arranged at intervals and are parallel to each other.

In the above-mentioned precision injection mold for large-size automobile back doors based on the back glue feeding technology, the bump structure includes two bumps with semicircular cross sections arranged on the front side wall of the molding surface, and the two bumps are symmetrically arranged along the center line of the molding surface.

In foretell advance gluey technique based on the back accurate injection mold of jumbo size car back door, ejecting structure include that two sets of levels vertically set up and a kicking block groove that is parallel to each other, every kicking block inslot of group is equipped with a kicking block groove that a plurality of intervals evenly set up, a kicking block groove of two sets of kicking block inslots crisscross the setting, the cross-section in kicking block groove be rectangular shape, and every kicking block tank bottom be equipped with the cross-section be circular and along a kicking block groove that vertical direction runs through the lower bolster.

In the accurate injection mold of jumbo size car back door based on the technique of gluing is advanced at the back in foretell, No. two ejecting structures include that a plurality of groups level transversely sets up and No. two kicking block grooves that are parallel to each other, No. two kicking block grooves of every group be equipped with two in No. two kicking block grooves, the cross-section of No. two kicking block grooves be rectangular shape, and every No. two kicking block groove bottoms portion be equipped with two cross-sections and be circular and run through No. two thimble grooves of lower bolster along vertical direction.

In the back glue feeding technology-based large-size automobile back door precise injection mold, the large-area ejection structure comprises a large ejector block groove which is arranged at the side wall of the forming surface and is recessed downwards, two ejector block grooves with long-strip-shaped sections are arranged at the bottom of the large ejector block groove, and each ejector block groove with a round section penetrates through the lower template along the vertical direction.

In the above-mentioned accurate injection mold of jumbo size car back door based on back advances gluey technique, No. two large tracts of land ejecting structures including setting up No. two big kicking block grooves that keep away from lug structure one side and inwards cave in at the shaping face, the cross-section in No. two big kicking block grooves be rectangular shape and have the radian, No. two big kicking block groove bottom be equipped with a plurality of cross-sections and be circular and run through No. four thimble grooves of lower bolster along vertical direction.

In the large-size automobile back door precise injection mold based on the back glue feeding technology, two flash ejection structures are respectively arranged on two parts, located on the forming surface, of the top of the lower template, and the two flash ejection structures are symmetrically arranged along the central line of the lower template.

In the above-mentioned accurate injection mold of jumbo size car back door based on back advances gluey technique, overlap ejecting structure include two inside sunken and the cross-section is No. four kicking block grooves of rectangular shape, No. four kicking block groove bottom be equipped with two cross-sections and be circular and run through No. five thimble grooves of lower bolster along vertical direction.

Compared with the prior art, the utility model has the advantages of:

1. the back on the lower bolster advances gluey subassembly and can advance gluey from the die cavity bottom, advances gluey efficiency that can increase to advance to compare side among the prior art and advance gluey, and can improve the fashioned integrality of product, prevents that the local omission that appears after the product shaping, also can prevent to appear weld line or melting point on the product surface, improves product surface quality.

2. The lug structure can form a thin-wall structure on the front side of a product, the first ejection structure and the second ejection structure can be matched with the ejector pin and the ejector block to eject out the product during demolding, the first large-area ejection structure and the second large-area ejection structure are matched with the large-area ejector block and the ejector pin to improve the contact area with the product during ejection, and the outer surface of the product is prevented from being damaged during ejection.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic diagram of the overall structure provided by the present invention;

fig. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic structural view of the top of the lower template;

fig. 4 is a schematic structural diagram of the glue inlet plate.

Detailed Description

As shown in fig. 1-4, a large-size automobile back door precise injection mold based on a back glue feeding technology comprises a lower template 1, wherein a forming surface 2 used for being combined to form a forming cavity is arranged at the top of the lower template 1, a bump structure 3 is arranged on the front side of the forming surface 2, arc surfaces 4 are arranged at the tops of the rest side walls of the forming surface 2, the left side and the right side of the forming surface 2 are symmetrically arranged, a first ejection structure 5 is arranged in the middle of the forming surface 2, two second ejection structures 6 are arranged on the left side and the right side of the forming surface 2, two first large-area ejection structures 7 are further arranged on the left side and the right side of the forming surface 2, a second large-area ejection structure 8 is further arranged on one side, away from the bump structure 3, of the forming surface 2, and a back glue feeding assembly 9 is further.

In this embodiment, the back on the lower bolster 1 advances gluey subassembly 9 can advance gluey from the die cavity bottom, advances gluey efficiency that can increase to advance to compare the side among the prior art and advance gluey, and can improve the fashioned integrality of product, prevents that the product from appearing the hourglass in the part after the shaping, also can prevent to appear weld line or splice point on the product surface, improves product surface quality.

The convex block structure 3 can assist product forming, the ejection structure 5 in the first size and the ejection structure 6 in the second size can be matched with the ejector pins and the ejector blocks to eject out a product during demoulding, the ejection structure 7 in the first size and the ejection structure 8 in the second size are matched with the ejector blocks in the first size and the ejector pins in the second size to improve the contact area with the product during ejection, and the outer surface of the product is prevented from being damaged during ejection.

Specifically, as shown in fig. 1 and 4, the back glue inlet assembly 9 includes a glue inlet plate 10 disposed on the lower side of the lower mold plate 1, a pouring gate 11 is disposed at the bottom of the glue inlet plate 10, and a plurality of glue inlet pipes 12 vertically penetrating through the lower mold plate 1 from the bottom of the lower mold plate 1 and connected to the molding cavity are disposed at the top of the glue inlet plate 10.

The molten casting liquid flows in through the pouring gate 11 at the bottom of the rubber inlet plate 10 and is introduced into the forming cavity from the bottom of the lower template through the plurality of rubber inlet pipes 12, the rubber is fed from the bottom of the forming cavity, the integrity of product forming can be improved, partial leakage after the product is formed can be prevented, welding lines or welding points on the outer surface of the product can be prevented, and the surface quality of the product can be improved; the rubber inlet pipes 12 are arranged and input simultaneously, so that the rubber inlet efficiency can be greatly improved, and the phenomenon that the quality of a formed product is poor due to the fact that liquid input into a forming cavity is cooled firstly is prevented.

Specifically, as shown in fig. 1, 2 and 4, the rubber inlet pipes 12 are arranged in parallel in several groups, and each group of rubber inlet pipes 12 includes three rubber inlet pipes 12 that are uniformly arranged at intervals and are parallel to each other. The multiple groups of uniformly arranged rubber inlet pipes 12 can keep the inflow speed and the cooling speed of each part of the product consistent, thereby improving the overall quality of the product.

Specifically, as shown in fig. 3, the bump structure 3 includes two bumps 13 having a semicircular cross section and disposed on the front side wall of the molding surface 2, and the two bumps 13 are symmetrically disposed along the center line of the molding surface 2. The semicircular projections 13 in the projection structure 3 can assist in product molding.

Specifically, as shown in fig. 3, the ejection structure 5 includes two sets of ejector block grooves 14 that are horizontally and longitudinally arranged and are parallel to each other, a plurality of ejector block grooves 14 that are evenly arranged at intervals are arranged in each set of ejector block groove 14, the ejector block grooves 14 in the two sets of ejector block grooves 14 are arranged in a staggered manner, the cross section of the ejector block groove 14 is in a long strip shape, and the bottom of each ejector block groove 14 is provided with an ejector pin groove 15 that is circular in cross section and penetrates through the lower template 1 along the vertical direction. The first ejector block groove 14 and the first ejector pin groove 15 are matched with the ejector block and the ejector pins to apply upward pressure to the middle of a product during demolding, so that the product can be ejected.

Specifically, as shown in fig. 3, the second ejection structure 6 includes a plurality of groups of second ejection block grooves 16 that are horizontally and horizontally arranged and are parallel to each other, two second ejection block grooves 16 are provided in each group of second ejection block grooves 16, the cross section of each second ejection block groove 16 is in a long strip shape, and two second ejection pin grooves 17 that are circular in cross section and penetrate through the lower template 1 along the vertical direction are provided at the bottom of each second ejection block groove 16. The second ejector block groove 16 and the second ejector pin groove 17 are matched with the ejector block and the ejector pins, upward pressure can be applied to the left side and the right side of the product during demolding, and therefore the product can be ejected out.

Specifically, as shown in fig. 3, the first large-area ejection structure 7 includes a first large ejector block groove 18 that is disposed at the side wall of the molding surface 2 and is recessed downward, two third ejector block grooves 19 having long-strip-shaped cross sections are disposed at the bottom of the first large ejector block groove 18, and a third ejector pin groove 20 having a circular cross section and penetrating through the lower template 1 along the vertical direction is disposed at the bottom of each third ejector block groove 19. The first large ejector block groove 18 is matched with the large-area ejector block to improve the contact area between the ejector block and the left side and the right side of a product during ejection, the outer surface of the product is prevented from being damaged during ejection, an ejector block detachably connected with the large-area ejector block improvement bolt is arranged in the third ejector block groove 19, and the ejector block is matched with the ejector pin in the third ejector block groove 20 to push the large-area ejector block to move upwards during demolding so as to eject the product.

Specifically, as shown in fig. 3, the second large-area ejection structure 8 includes a second large ejection block groove 21 which is arranged on one side of the molding surface 2 away from the bump structure 3 and is recessed inwards, the cross section of the second large ejection block groove 21 is long-strip-shaped and has a radian, and a fourth ejection pin groove 22 which is circular in cross section and penetrates through the lower template 1 along the vertical direction is arranged at the bottom of the second large ejection block groove 21. The second large ejector block groove 21 is matched with the large-area ejector block to improve the contact area of one side of the product far away from the lug structure 3 during ejection, the outer surface of the product is prevented from being damaged during ejection, and the fourth ejector pin groove 22 is matched with the ejector pin to push the large-area ejector block to move upwards during demolding so as to eject the product.

Preferably, as shown in fig. 3, two of the top portions of the lower die plate 1 on the molding surface 2 are further provided with a flash ejection structure 23, and the two flash ejection structures 23 are symmetrically arranged along the center line of the lower die plate 1. The flash ejection structure 23 comprises two inwards-recessed ejector block grooves 24 with cross sections in long strips, and two ejector pin grooves 25 with cross sections in circular shape and penetrating through the lower template 1 along the vertical direction are arranged at the bottoms of the ejector block grooves 24. The flash ejecting structure 23 can eject the flash generated during molding during demolding, so as to reduce the workload of cleaning the flash, and when the flash ejecting structure is used, the fourth ejector block groove 24 and the fifth ejector pin groove 25 are matched with the ejector block and the ejector pin to move upwards during demolding of a product and eject the flash formed on two sides of the product.

The utility model discloses a theory of operation is: the back on the lower bolster 1 advances gluey subassembly 9 can advance gluey from the die cavity bottom, advances gluey efficiency that can increase to advance to compare the side among the prior art and advance gluey, and can improve the fashioned integrality of product, prevents that the local omission that appears after the product shaping, also can prevent to appear weld line or splice point on the product surface, improves product surface quality. The projection structure 3 can assist product forming, the first ejection structure 5 and the second ejection structure 6 can be matched with an ejector pin and an ejector block to eject a product during demoulding, the first large-area ejection structure 7 and the second large-area ejection structure 8 are matched with a large-area ejector block and an ejector pin to improve the contact area with the product during ejection, the outer surface of the product is prevented from being damaged during ejection, molten casting liquid flows in through a pouring gate 11 at the bottom of a glue inlet plate 10 and is introduced into a forming cavity from the bottom of a lower template through a plurality of glue inlet pipes 12, glue is fed from the bottom of the forming cavity to improve the integrity of product forming, local leakage after product forming is prevented, fusion welding lines or fusion welding points on the outer surface of the product can also be prevented, and the surface quality of the product is improved; the rubber inlet pipes 12 are arranged and input simultaneously, so that the rubber inlet efficiency can be greatly improved, the problem that the quality of a formed product is poor due to the fact that liquid input into a forming cavity is cooled firstly is avoided, and the inflow speed and the cooling speed of each part of the product can be kept consistent by the aid of the plurality of groups of uniformly arranged rubber inlet pipes 12, so that the overall quality of the product is improved; the semicircular lug 13 in the lug structure 3 can assist the product molding; the first ejector block groove 14 and the first ejector pin groove 15 are matched with the ejector block and the ejector pins, so that upward pressure can be applied to the middle of a product during demolding, and the product can be ejected; the second ejector block groove 16 and the second ejector pin groove 17 are matched with the ejector block and the ejector pins, so that upward pressure can be applied to the left side and the right side of the product during demolding, and the product can be ejected; the first large ejector block groove 18 is matched with a large-area ejector block to improve the contact area between the first large ejector block groove and the left side and the right side of a product during ejection, the outer surface of the product is prevented from being damaged during ejection, an ejector block detachably connected with a large-area ejector block lifting bolt is arranged in the third ejector block groove 19, and the ejector block is matched with an ejector pin in the third ejector block groove 20 to push the large-area ejector block to move upwards during demolding so as to eject the product; the second large ejector block groove 21 is matched with the large-area ejector block to improve the contact area with one side of the product far away from the lug structure 3 during ejection, so that the outer surface of the product is prevented from being damaged during ejection, and the fourth ejector pin groove 22 is matched with the ejector pins to push the large-area ejector block to move upwards during demolding so as to eject the product; the flash ejecting structure 23 can eject the flash generated during molding during demolding, so as to reduce the workload of cleaning the flash, and when the flash ejecting structure is used, the fourth ejector block groove 24 and the fifth ejector pin groove 25 are matched with the ejector block and the ejector pin to move upwards during demolding of a product and eject the flash formed on two sides of the product.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A large-size automobile back door precise injection mold based on a back glue feeding technology comprises a lower template (1), it is characterized in that the top of the lower template (1) is provided with a molding surface (2) used for combining and forming a molding cavity, the front side of the molding surface (2) is provided with a convex block structure (3), the tops of the other side walls of the molding surface (2) are provided with arc surfaces (4), the left side and the right side of the molding surface (2) are symmetrically arranged, the middle part of the molding surface (2) is provided with a first ejection structure (5), two second ejection structures (6) are arranged on the left side and the right side of the molding surface (2), two first large-area ejection structures (7) are also arranged on the left side and the right side of the molding surface (2), the side, far away from the convex block structure (3), of the forming surface (2) is further provided with a second large-area ejection structure (8), and the lower template (1) is further provided with a back glue inlet assembly (9).

2. The large-size automobile back door precise injection mold based on the back glue feeding technology as claimed in claim 1, wherein the back glue feeding assembly (9) comprises a glue feeding plate (10) arranged on the lower side of the lower template (1), a glue feeding gate (11) is arranged at the bottom of the glue feeding plate (10), and a plurality of glue feeding pipes (12) vertically penetrating through the lower template (1) from the bottom of the lower template (1) upwards and connected with the molding cavity are arranged at the top of the glue feeding plate (10).

3. The precision injection mold for the back door of the large-size automobile based on the back glue feeding technology as claimed in claim 2, wherein the glue feeding pipes (12) are arranged in a plurality of groups and are parallel to each other, and each group of glue feeding pipes (12) comprises three glue feeding pipes (12) which are uniformly arranged at intervals and are parallel to each other.

4. The precision injection mold for the back door of the large-size automobile based on the back glue feeding technology as claimed in claim 1, wherein the bump structure (3) comprises two bumps (13) with a semicircular cross section, which are arranged on the front side wall of the molding surface (2), and the two bumps (13) are symmetrically arranged along the center line of the molding surface (2).

5. The large-size automobile back door precise injection mold based on the back glue feeding technology as claimed in claim 1, wherein the first ejection structure (5) comprises two groups of first ejection block grooves (14) which are horizontally and longitudinally arranged and are parallel to each other, a plurality of first ejection block grooves (14) which are uniformly arranged at intervals are arranged in each group of first ejection block grooves (14), the first ejection block grooves (14) in the two groups of first ejection block grooves (14) are staggered, the cross section of each first ejection block groove (14) is long-strip-shaped, and a first thimble groove (15) which is circular in cross section and penetrates through the lower template (1) in the vertical direction is arranged at the bottom of each first ejection block groove (14).

6. The large-size automobile back door precise injection mold based on the back glue feeding technology as claimed in claim 1, wherein the second ejection structure (6) comprises a plurality of groups of second ejection block grooves (16) which are horizontally and transversely arranged and are parallel to each other, two second ejection block grooves (16) are arranged in each group of second ejection block grooves (16), the cross section of each second ejection block groove (16) is long-strip-shaped, and two second thimble grooves (17) which are circular in cross section and penetrate through the lower template (1) in the vertical direction are arranged at the bottom of each second ejection block groove (16).

7. The large-size automobile back door precise injection mold based on the back glue feeding technology as claimed in claim 1, wherein the first large-area ejection structure (7) comprises a first large ejection block groove (18) which is arranged at the side wall of the forming surface (2) and is recessed downwards, two third ejection block grooves (19) with long-strip-shaped cross sections are arranged at the bottom of the first large ejection block groove (18), and a third thimble groove (20) with a round cross section and penetrating through the lower template (1) along the vertical direction is arranged at the bottom of each third ejection block groove (19).

8. The precise injection mold for the back door of the large-size automobile based on the back glue feeding technology as claimed in claim 1, wherein the second large-area ejection structure (8) comprises a second large ejection block groove (21) which is arranged on one side of the forming surface (2) far away from the bump structure (3) and is recessed inwards, the section of the second large ejection block groove (21) is long-strip-shaped and has a radian, and a plurality of fourth ejector pin grooves (22) which are circular in section and penetrate through the lower template (1) in the vertical direction are arranged at the bottom of the second large ejection block groove (21).

9. The large-size automobile back door precise injection mold based on the back glue feeding technology as claimed in claim 1, wherein two flash ejection structures (23) are respectively arranged on two sides of the top of the lower template (1) on the molding surface (2), and the two flash ejection structures (23) are symmetrically arranged along the center line of the lower template (1).

10. The precision injection mold for the back door of the large-size automobile based on the back glue feeding technology as claimed in claim 9, wherein the flash ejection structure (23) comprises two inward-recessed four-gauge ejector block grooves (24) with long-strip-shaped cross sections, and two five-gauge ejector pin grooves (25) with circular cross sections and penetrating through the lower template (1) in the vertical direction are arranged at the bottom of the four-gauge ejector block grooves (24).