CN214926574U

CN214926574U - Light guide strip mold structure with patterns

Info

Publication number: CN214926574U
Application number: CN202023339412.8U
Authority: CN
Inventors: 冯建毅
Original assignee: Shanghai Lingtian Precision Molding Co ltd
Current assignee: Shanghai Lingtian Precision Molding Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-11-30
Anticipated expiration: 2030-12-31

Abstract

The utility model provides a leaded light strip mould structure with decorative pattern, at least a pair of front mould benevolence has been inlayed to the front mould board bottom symmetry of mould, and open front mould benevolence bottom has first arc elongated slot, inlays on the back template of every first arc elongated slot below and is equipped with back mould benevolence, and the side of going up of back mould benevolence is equipped with the tooth groove, inlays respectively on the back template of back mould benevolence both sides and is equipped with first kicking block and second kicking block, the bottom of first kicking block and second kicking block is first ejector pin and the second ejector pin of fixedly connected with respectively, and the bottom of first ejector pin and second ejector pin is respectively with last thimble board and lower thimble board fixed connection, and open respectively on the top of the relative one side of first kicking block and second kicking block has second arc elongated slot and third arc elongated slot, and the upside face of first arc elongated slot, second arc elongated slot, third arc elongated slot and back mould benevolence encloses the die cavity that forms leaded light strip. The mould can smoothly demould the light guide strip with the patterns, and the parts forming the cavity are convenient to replace.

Description

Light guide strip mold structure with patterns

Technical Field

The utility model belongs to the technical field of injection mold, concretely relates to leaded light strip mould structure with decorative pattern.

Background

The light guide strip is a part combined by optical design and precision machining, one side of the common car lamp light guide strip is provided with pattern teeth for gathering light, and the light guide strip has the structural characteristics of being thin and long and having patterns on one side, so that the light guide strip has higher requirement on the precision of a mould when the mould is injected. When a conventional thimble structure is adopted for ejecting a product, the thimble is very easy to damage the patterns of the light guide strip or leave obvious ejector pin traces; when the injection molding mode that the rear mold core with the pattern teeth is embedded in the rear mold plate and the ejector pin is not used for ejection is adopted, certain difficulty is brought to the demolding of the light guide strip and the replacement of a product cavity part, so that the mold structure which is convenient to replace and enables the patterns of the light guide strip to be smoothly demolded needs to be provided.

SUMMERY OF THE UTILITY MODEL

In order to mould plastics the preparation and have the leaded light strip of decorative pattern to make leaded light strip can smooth drawing of patterns and decorative pattern not destroyed, the utility model provides a leaded light strip mould structure with decorative pattern.

The technical scheme of the utility model as follows: a light guide strip die structure with patterns comprises a panel, a front template, a rear template, an upper thimble plate, a lower thimble plate and a bottom plate which are sequentially arranged from top to bottom, wherein die feet are fixedly connected between the outer edges of two sides of the rear template and the bottom plate; the rear mould comprises a rear mould core and is characterized in that a first ejector block and a second ejector block are further embedded in the top of the rear mould plate on two sides of the rear mould core respectively, a first ejector rod and a second ejector rod are fixedly connected to the bottoms of the first ejector rod and the second ejector block respectively, the bottom of the first ejector rod is fixedly connected with an upper ejector plate, the bottom of the second ejector rod is fixedly connected with a lower ejector plate, a second arc-shaped long groove and a third arc-shaped long groove are formed in the top end of one side, opposite to the first ejector block and the second ejector block, of the first ejector block, the top end of the other side of the second ejector block are provided with a second arc-shaped long groove and a third arc-shaped long groove respectively, and a light guide strip cavity with patterns is formed by surrounding the upper side of the first arc-shaped long groove, the second arc-shaped long groove, the third arc-shaped long groove and the rear mould core.

Furthermore, the rear die core comprises a fixing block at the bottom and a convex block extending towards the direction of the first arc-shaped long groove on the fixing block, the tooth groove is arranged on the upper side surface of the convex block, and one side of the first ejector block, which is opposite to the second ejector block, is respectively contacted with the two side surfaces of the convex block.

Furthermore, the outer walls of the first ejector rod and the second ejector rod in the rear template are respectively sleeved with ejector rod sleeves, and the ejector rod sleeves are fixedly connected with the rear template.

Further, go up the thimble board and be equipped with stop device on the thimble board down, stop device includes that at least a pair of locating go up the thimble board and fix on the relative both sides lateral wall of thimble board down be used for injecing on the thimble version down the locating part of thimble board removal stroke, the top and the bottom of separable connecting piece respectively with go up thimble board and thimble board fixed connection down.

Furthermore, a through hole for the limiting piece to pass through is formed in the upper ejector plate, and the limiting piece passes through the through hole and extends towards the rear template.

Further, separable connecting piece includes fixed connection the lower mounting of thimble board down, and connection on the lower mounting go up the last mounting of thimble board, it has the ascending fixed recess of opening to open on the lower mounting, fixed recess internal fixation has a pair of elastic component, the bottom of going up the mounting is fixed with a connector, the connector inserts in the fixed recess, and the lock is in between the elastic component.

Further preferably, the opening at the top of the fixing groove forms an inclined angle towards two sides, and the width of the top of the fixing groove is greater than that of the bottom of the fixing groove; the elastic piece is an elastic clamp, and the bottom of the elastic clamp is fixed at the bottom of the fixing groove; the connector is the tapered connector that the width reduces gradually from the top down, the medial surface of elasticity clamp with the connector looks lock will the connector presss from both sides tightly.

Further, the bottom of the elastic clamp is fixed to the bottom of the fixing groove, and the top of the elastic clamp extends to the outer side of the upper opening of the fixing groove.

The utility model discloses following beneficial effect has: (1) the utility model uses the front mold core, the rear mold core with the tooth groove, the first ejector block and the second ejector block to jointly form the product cavity of the light guide strip with patterns, the shapes of the parts are designed according to the shape of the light guide strip, the volume is small, and the replacement is convenient; (2) the first top block and the second top block are used as parts forming a product cavity, smooth demolding of the light guide strip is realized through secondary ejection, and the pattern of the light guide strip is protected; (3) the multiple groups of parts forming the product cavity are symmetrically arranged in the mold, multiple groups of light guide strips with patterns can be simultaneously injected, and the production efficiency is improved.

Drawings

Fig. 1 is a top view of the rear mold core and the rear mold plate of the mold of the present invention;

FIG. 2 is a cross-sectional view of the mold taken along line A-A of FIG. 1;

FIG. 3 is an enlarged view of the location B in FIG. 2;

FIG. 4 is a structural view of the rear mold insert of the present invention;

fig. 5 is a cross-sectional view of the separable connector of fig. 2.

Wherein: 1. a panel; 2. a front template; 3. a rear template; 4. an upper ejector plate; 5. a lower ejector plate; 6. a base plate; 7. a mould leg; 8. an upper groove; 9. a front mold core; 10. a first arc-shaped long slot; 11. a rear mold core; 111. a fixed block; 112. a bump; 12. a tooth pattern groove; 13. a first top block; 14. a second top block; 15. a first through hole; 16. a second through hole; 17. a first ejector rod; 18. a second ejector rod; 19. a second arc-shaped long slot; 20. a third arc-shaped long slot; 21. a separable connector; 22. a limiting member; 23. a lower fixing member; 24. an upper fixing member; 25. fixing the groove; 26. an elastic member; 27. a connector; 28. a through hole; 29. a light guide strip; 30. a fixing hole; 31. and (4) a ejector rod sleeve.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 2 to 4, the utility model provides a leaded light strip mould structure with decorative pattern, include panel 1, front forms 2, back template 3, go up thimble board 4, thimble board 5 and bottom plate 6 that from the top down set gradually, panel 1 and front forms 2 fixed connection, fixedly connected with mould foot 7 between the both sides outer fringe of back template 3 and bottom plate 6, thimble board 5 and last thimble board 4 place in proper order on the bottom plate 6 down.

The bottom of the front template 2 is symmetrically provided with at least one pair of upper grooves 8 with downward openings, a front mold core 9 is embedded in the upper grooves 8, and the front mold core 9 and the front template 2 are fixedly connected through bolts. The bottom of the front mold core 9 is provided with first arc-shaped long grooves 10, the top of the rear mold plate 3 below each first arc-shaped long groove 10 is embedded with a rear mold core 11, the bottom of the rear mold core 11 is fixedly connected with the rear mold plate 3 through screws, and the upper side surface of the rear mold core 11 is provided with a insection groove 12 for forming patterns of the light guide strips 29.

The rear die plate 3 top of back mould benevolence 11 both sides still inlays respectively and is equipped with first kicking block 13 and second kicking block 14, first kicking block 13 and second kicking block 14 bottom open respectively on the back die plate 3 have first through-hole 15 and second through-hole 16, be provided with first ejector pin 17 and second ejector pin 18 in first through-hole 15 and the second through-hole 16 respectively, the top and the bottom of first ejector pin 17 pass through the bolt respectively with first kicking block 13 and last thimble board 4 fixed connection, the top and the bottom of second ejector pin 18 pass through the bolt respectively with second kicking block 14 with thimble board 5 fixed connection down, along with the motion of last thimble board 4 and thimble board 5 down, first ejector pin 17 and second ejector pin 18 can be followed respectively first through-hole 15 and second through-hole 16 slide. The top ends of the opposite sides of the first top block 13 and the second top block 14 are respectively provided with a second arc-shaped long groove 19 and a third arc-shaped long groove 20 which are opposite, the first arc-shaped long groove 10 of the front mold core 9, the second arc-shaped long groove 19 of the first top block 13, the third arc-shaped long groove 20 of the second top block 14, and the upper side surface of the rear mold core 11 are surrounded to form a cavity of a light guide strip 29 with patterns.

It should be noted that, according to the above mold structure for forming the cavity of the light guide strip 29, the number of the front mold core 9, the rear mold core 11, the first top block 13, and the second top block 14 can be increased simultaneously, so that multiple sets of light guide strips can be formed by injection molding simultaneously. As shown in fig. 1, in the embodiment, two sets of the front mold core 9, the rear mold core 11, the first top block 13 and the second top block 14 for forming the cavity of the light guide strip 29 are symmetrically disposed in the mold structure, and the mold structure can simultaneously form two sets of symmetrical light guide strips 29 by injection molding.

Further, the rear mold core 11 includes a fixing block 111 at the bottom and a protrusion 112 extending toward the first arc-shaped long groove 10 on the fixing block 111, the width of the protrusion 112 is smaller than the width of the fixing block 111, and the tooth groove 12 is disposed on the upper side surface of the protrusion 112; the opposite sides of the first top block 13 and the second top block 14 are respectively contacted with the two side faces of the convex block 112, so that the first top block 13 and the convex block 112, and the side faces of the second top block 14 and the convex block 112 are mutually attached, and the occupied volume of a part for forming a product cavity is reduced.

Further, the outer walls of the first ejector rod 17 and the second ejector rod 18 in the rear template 3 are respectively sleeved with ejector rod sleeves 31, the ejector rod sleeves 31 are fixedly connected with the rear template 3 through screws, the first ejector rod 17 and the second ejector rod 18 respectively penetrate through the ejector rod sleeves 31 to slide in the first through hole 15 and the second through hole 16, and the ejector rod sleeves 31 can reduce mutual friction between the ejector rods and the corresponding through holes, so that the service life of the ejector rods is prolonged.

Further, as shown in fig. 2 and 5, the upper ejector plate 4 and the lower ejector plate 5 are provided with a limiting device, the limiting device includes at least one pair of separable connectors 21 arranged on the side walls of two opposite sides of the upper ejector plate 4 and the lower ejector plate 5, and a limiting member 22 fixed on the lower ejector plate 5 and used for limiting the moving stroke of the lower ejector plate 5, and the top and the bottom of the separable connectors 21 are respectively and fixedly connected with the upper ejector plate 4 and the lower ejector plate 5.

Further, a through hole 28 is formed in the upper thimble plate 4 for the limiting member 22 to pass through, and the limiting member 22 passes through the through hole 28 and extends toward the rear mold plate 3, in this embodiment, preferably, the limiting member 22 has a cylindrical configuration.

Further, the separable connector 21 includes a lower fixing member 23 and an upper fixing member 24 on the lower fixing member 23, fixing holes 30 are respectively opened on the upper fixing member 24 and the lower fixing member 23, and bolts are used to pass through the fixing holes 30 and respectively insert into the upper ejector plate 4 and the lower ejector plate 5, thereby fixedly connecting the upper fixing member 24 and the lower fixing member 23 with the upper ejector plate 4 and the lower ejector plate 5, respectively. Open on the lower mounting 23 and have the ascending fixed recess 25 of opening, fixed recess 25 internal fixation has a pair of elastic component 26, the bottom of going up mounting 24 is fixed with a connector 27, connector 27 inserts in the fixed recess 25 to the lock is in between the elastic component 26, at connector 27 insert the in-process between the elastic component 26, the top of elastic component 26 is opened to both sides under the pressure of connector 27. The separable connector 21 is separated by an external force, and the upper fixing member 24 and the connector 27 fixed at the bottom thereof are separated from the lower fixing member 23, thereby releasing the fixed connection between the upper ejector plate 4 and the lower ejector plate 5.

It should be noted that, in the actual work of the mold, an injection molding machine is arranged outside the bottom plate 6 of the mold, and the injection molding machine pushes the ejector plate to move through the ejector roller. In this embodiment, the lower ejector plate 5 is provided with an ejector through hole (not shown) through which an ejector of the injection molding machine passes, when the separable connector 21 is not separated, the upper ejector plate 4 and the lower ejector plate 5 are connected by the separable connector 21, and when the ejector of the injection molding machine passes through the ejector through hole to push the upper ejector plate 4, the limiting member 22 and the lower ejector plate 5 fixedly connected to the bottom thereof move together with the upper ejector plate 4 toward the rear mold plate 3. When the top of the limiting part 22 is abutted to the bottom of the rear template 3, the limiting part 22 and the lower ejector plate 5 stop moving, at this time, the ejector rod of the injection molding machine continues to give upward thrust to the upper ejector plate 4, and under the action of the thrust, the separable connecting part 21 is separated, that is, the connector 27 moves upward to prop the top of the elastic part 26 to two sides, so that the separation from the elastic part 26 is realized, and the connection relation between the upper ejector plate 4 and the lower ejector plate 5 is released. In addition, since the length of the stopper 22 restricts the movement stroke of the lower ejector plate 5, the length of the stopper 22 needs to be designed in advance according to the required movement stroke of the lower ejector plate 5.

Preferably, in this embodiment, the fixing groove 25 is opened on the side of the lower fixing piece 23 close to the lower ejector plate 5, which can reduce the volume of the lower fixing piece 23; the opening at the top of the fixing groove 25 is inclined towards both sides, so that the width of the top of the fixing groove 25 is greater than that of the bottom. The pair of elastic members 26 are elastic clips, the bottoms of the elastic clips are fixed to the bottom of the fixing groove 25 and can be fixedly connected through welding, screw fixing and the like, and the tops of the elastic clips extend out of the opening of the top of the fixing groove 25. Connector 27 is the tapered connector that the from top to bottom width reduces gradually, the medial surface of elasticity clamp with connector 27 looks lock, thereby will connector 27's top is pressed from both sides tightly, works as when connector 27 receives outside pulling force, connector 27's top is outwards strutted through the elasticity clamp with both sides, realizes connector 27 and elasticity clamp's separation.

After the injection molding of the mold of the utility model is completed, the mold opening is performed between the front mold plate 2 and the rear mold plate 3, after the mold opening, the ejector rod of the injection molding machine outside the mold bottom plate 6 pushes the upper ejector plate 4 and the lower ejector plate 5 to the rear mold plate 3 direction by pushing the upper ejector plate 4, and at the moment, the first ejector block 13 and the second ejector block 14 eject the light guide strip 29 from the rear mold core 11; when the top of the limiting part 22 abuts against the rear template 3, the lower ejector plate 5 stops moving, at this time, the ejector rod of the injection molding machine continues to provide thrust for the upper ejector plate 4, the separable connecting part 21 separates the elastic part 26 from the elastic part 26 after being propped open by the connector 27 under the action of the thrust, the upper ejector plate 4 moves towards the rear template 3 relative to the lower ejector plate 5, the light guide strip 29 is ejected by the first ejector block 13, demolding is realized, and patterns of the light guide strip 29 can be well protected from being damaged by the demolding mode.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A light guide strip die structure with patterns comprises a panel, a front die plate, a rear die plate, an upper ejector plate, a lower ejector plate and a bottom plate which are sequentially arranged from top to bottom, wherein die feet are fixedly connected between the outer edges of two sides of the rear die plate and the bottom plate, the light guide strip die structure is characterized in that at least one pair of front die cores are symmetrically embedded in the bottom of the front die plate, first arc-shaped long grooves are formed in the bottoms of the front die cores, a rear die core is embedded in the top of the rear die plate below each first arc-shaped long groove, a tooth pattern groove matched with the patterns of a light guide strip is formed in the upper side surface of each rear die core, a first ejector block and a second ejector block are further embedded in the tops of the rear die plates on two sides of each rear die core respectively, the bottoms of the first ejector block and the second ejector block are fixedly connected with a first ejector rod and a second ejector rod respectively, the bottoms of the first ejector rod are fixedly connected with the upper ejector plate, and the bottoms of the second ejector rod are fixedly connected with the lower ejector plate, the top end of one side, opposite to the first ejecting block and the second ejecting block, of the first ejecting block is provided with a second arc-shaped long groove and a third arc-shaped long groove respectively, and the upper side surfaces of the first arc-shaped long groove, the second arc-shaped long groove, the third arc-shaped long groove and the rear die core are surrounded to form a light guide strip cavity with patterns.

2. The patterned light guide strip mold structure of claim 1, wherein the rear mold core comprises a bottom fixing block and a protrusion extending toward the first arc-shaped elongated slot on the fixing block, the tooth groove is formed on the upper side of the protrusion, and the opposite sides of the first and second top blocks are in contact with the two side surfaces of the protrusion respectively.

3. The patterned light guide strip mold structure according to claim 1, wherein ejector rod sleeves are respectively sleeved on outer walls of the first ejector rods and the second ejector rods in the rear mold plate, and the ejector rod sleeves are fixedly connected with the rear mold plate.

4. The patterned light guide bar mold structure of claim 1, wherein the upper and lower ejector plates are provided with a spacing device, the spacing device comprises at least one pair of separable connectors provided on opposite side walls of the upper and lower ejector plates, and a limiting member fixed on the lower ejector plate for limiting the moving stroke of the lower ejector plate, and the top and bottom of the separable connectors are respectively fixedly connected with the upper and lower ejector plates.

5. The patterned light guide bar mold structure of claim 4, wherein said upper ejector plate has a through hole for said retainer to pass through, and said retainer passes through said through hole and extends toward said rear mold plate.

6. The patterned light guide strip mold structure of claim 4, wherein the separable connectors comprise a lower fixing member fixedly connected to the lower ejector plate and an upper fixing member connected to the upper ejector plate, the lower fixing member has a fixing groove with an upward opening, a pair of elastic members is fixed in the fixing groove, a connector is fixed at the bottom of the upper fixing member, and the connector is inserted into the fixing groove and fastened between the elastic members.

7. The patterned light guide strip mold structure of claim 6, wherein the opening of the top of the fixing groove is inclined to both sides, and the width of the top of the fixing groove is greater than the width of the bottom of the fixing groove; the pair of elastic pieces are elastic clamps, and the bottoms of the elastic clamps are fixed at the bottoms of the fixing grooves; the connector is the tapered connector that the width reduces gradually from the top down, the medial surface of elasticity clamp with the connector looks lock will the connector presss from both sides tightly.

8. A patterned light guide strip mold structure according to claim 7, wherein the top of the elastic clip extends to the outside of the opening on the upper side of the fixing groove.