CN218615280U

CN218615280U - Injection mould secondary ejection mechanism

Info

Publication number: CN218615280U
Application number: CN202222537780.6U
Authority: CN
Inventors: 钟杰; 杜玄宏
Original assignee: Shanghai Zhengpei Molding Technology Co ltd
Current assignee: Shanghai Zhengpei Molding Technology Co ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-03-14
Anticipated expiration: 2032-09-23

Abstract

The utility model relates to an injection mould secondary ejection mechanism relates to the field of injection mould drawing of patterns technique, and it is including setting up the top to one side of mould and a plurality of thimble that runs through the mould, still including the location knock-out pin, and the location knock-out pin runs through the mould and is parallel with the thimble, location knock-out pin and mould sliding fit, and the location knock-out pin is close to the one end of product and offers the constant head tank that is used for the shaping product strengthening rib, and the one end that the mould was kept away from to the location knock-out pin is provided with spacing step. This application is through setting up location ejector pin on the mould, and the constant head tank through location ejector pin tip is fixed a position the product, and driving piece drive thimble on the rethread injection moulding device, push up and location ejector pin push up to product one side to one side, and the product can only produce the removal that breaks away from the mould direction and the horizontal migration moves, pushes up to one side and can take place horizontal migration at ejecting in-process to the realization pushes up the mesh that breaks away from in the product to one side, has simple structure practical's effect.

Description

Injection mould secondary ejection mechanism

Technical Field

The application relates to the field of injection mould drawing of patterns technique, especially relates to an injection mould quadratic term ejection mechanism.

Background

Injection molding is a method for producing and molding industrial products, and is divided into injection molding and die casting. An injection molding machine is a main molding device for making thermoplastic plastics or thermosetting materials into plastic products with various shapes by using a plastic molding die, and the injection molding is realized by an injection molding machine and the die.

In the related art, referring to fig. 1, a bent portion 61 that is bent downward is provided at an end of a product 6, in order to mold the bent portion 61, an inclined top 4 that is inclined and corresponding to the bent portion 61 needs to be provided on a mold 2, and after the bent portion 61 is molded, the ejector pin 32 and the inclined top 4 are driven by a driving mechanism on an injection molding machine to simultaneously move upward to eject the product 6 out of a mold.

In view of the above-mentioned related art, in practical use, it is found that in the process of demolding the product 6, because the holding force of the bending portion 61 to the lifter 4 is large, the product 6 may obliquely slide along with the lifter 4, so that the product 6 cannot be smoothly demolded.

SUMMERY OF THE UTILITY MODEL

In order to facilitate the drawing of patterns of product, the application provides an injection mould secondary ejection mechanism, has simple structure practical effect.

The application provides a pair of injection mould secondary ejection mechanism adopts following technical scheme:

the utility model provides an injection mould secondary ejection mechanism, is including setting up the top to one side at mould and a plurality of thimble that runs through the mould, still includes location knock-out pin, location knock-out pin run through the mould and with the thimble is parallel, location knock-out pin and mould sliding fit, the constant head tank that is used for the shaping product strengthening rib is offered to the one end that location knock-out pin is close to the product, the one end that the mould was kept away from to location knock-out pin is provided with spacing step.

By adopting the technical scheme, the end part of the positioning ejector rod is provided with the positioning groove, the reinforcing ribs of the product are formed through the positioning groove, when the product is demoulded, the ejector pin, the inclined ejector and the ejector rod are pushed to one side of the product through injection molding equipment, and the reinforcing ribs of the product are inserted into the positioning groove, so that the product cannot horizontally move along with the inclined ejector, and the inclined ejector can be smoothly separated from the product; after the product is separated from the inclined top, the limiting step of the positioning ejection rod is abutted against the mold and cannot be ejected upwards continuously, and the ejector pin is ejected upwards continuously under the driving of the injection molding equipment, so that the product is ejected from the limiting groove to complete demolding, and the device is simple in integral structure and convenient to use.

Optionally, the ejector pin further comprises a top plate, the top plate is located below the mold, one end, far away from the mold, of the ejector pin is fixed on the top plate, the positioning ejector rod penetrates through the top plate and is in sliding fit with the top plate, one end, close to the top plate, of the positioning ejector rod is provided with a limiting ring protrusion, and the limiting ring protrusion abuts against one side, far away from the mold, of the top plate.

By adopting the technical scheme, in the demolding process, the ejector pin and the inclined ejector pin are ejected out to one side of a product by driving the top plate through the injection molding equipment, the limiting groove is used for forming the reinforcing rib of the product, the formed reinforcing rib is adhered to the groove wall of the limiting groove, the positioning ejector rod moves along with the product in the product ejecting process, after the inclined ejector is separated from the product, the limiting step is abutted to the mold, the positioning ejector rod stops moving, the top plate continues to move, and the ejector pin ejects the product out of the limiting groove; when injection moulding device drive roof resets, the protruding butt of spacing ring on the roof, the roof drives spacing knockout pin and resets, and overall structure is simple and practical.

Optionally, the location knock-out pin is close to the protruding one end of spacing ring has seted up spacing annular, correspond on the roof spacing annular has seted up the spacing hole, the axis perpendicular to in spacing hole the axis of location knock-out pin, spacing downthehole slip is inserted there is the gag lever post, the gag lever post is close to the one end of spacing annular is provided with toper butt face, spacing downthehole in the gag lever post is kept away from the one end of location knock-out pin is provided with the elastic component, the gag lever post quilt the elastic component butt in on the location knock-out pin.

By adopting the technical scheme, the limiting rod and the elastic piece are arranged, the limiting rod is tightly abutted in the limiting ring groove through the elastic piece, the positioning ejection rod is positioned through the limiting rod, and when the injection molding equipment drives the top plate to move towards one side of the mold, the limiting rod can drive the positioning ejection rod to move towards one side of the mold, so that the reinforcing rib of a product is prevented from being released from the limiting ring groove; when the limiting step is abutted to the die, the conical abutting surface of the limiting rod slides out of the limiting groove, and the top plate continues to move to demold the product.

Optionally, the installation structure further comprises an installation block, the limiting hole is formed in the installation block, the limiting rod and the elastic piece are installed on the installation block, an installation groove is formed in one side of the positioning ejection rod on the top plate, and the installation block is fixed in the installation groove.

Through adopting above-mentioned technical scheme, install gag lever post and elastic component on the installation piece, fix the mounting hole in the mounting groove again, made things convenient for the assembly of elastic component and gag lever post.

Optionally, an adjusting screw is installed at one end, far away from the limiting rod, of the limiting hole.

Through adopting above-mentioned technical scheme, set up adjusting screw, in the assembling process, can adjust the supporting power of elastic component through adjusting screw, facilitate the use.

Optionally, the die further comprises a lower die holder for fixing the die, an avoiding hole is formed in the position, corresponding to the inclined top, of the lower die holder, a positioning block is fixed at the avoiding hole on the lower die holder, an inclined sliding hole is formed in the positioning block, and the inclined top is slidably inserted into the sliding hole.

By adopting the technical scheme, the avoidance hole is formed in the lower die base, and the positioning block provided with the sliding hole is fixedly arranged at the avoidance hole, so that the lower die base can be conveniently machined.

Optionally, a sliding groove is formed in the top plate along the horizontal sliding direction of the inclined top, and one end, close to the top plate, of the inclined top is slidably inserted into the sliding groove.

Through adopting above-mentioned technical scheme, set up the groove that slides on the roof, insert the tip of pitched roof and locate the inslot that slides, in the drawing of patterns in-process, the tip of pitched roof moves along the groove that slides, can effectively prevent that pitched roof from taking place to buckle or squint.

Optionally, a fixing plate for connecting injection molding equipment is fixed on one side of the lower die holder close to the top plate, and the fixing plate is provided with two sides respectively located on the top plate.

Through adopting above-mentioned technical scheme, set up the fixed plate, can be connected with injection moulding device through the fixed plate.

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

1. the positioning groove is formed in the end part of the positioning ejector rod, the reinforcing ribs of the product are formed by the positioning groove, when the product is demoulded, the ejector pin, the inclined ejector and the ejector rod are pushed to one side of the product through injection molding equipment, the reinforcing ribs of the product are inserted into the positioning groove, so that the product cannot horizontally move along with the inclined ejector, the inclined ejector can be smoothly separated from the product, after the inclined ejector is separated from the product, the limiting step of the positioning ejector rod is abutted against the mold and cannot be continuously ejected upwards, the ejector pin is continuously ejected upwards under the driving of the injection molding equipment, the product is separated from the limiting groove, and the demoulding is completed, so that the integral structure is simple and convenient to use;

2. through set up gag lever post and elastic component on the roof, set up spacing annular on the ejector pin of location, support the gag lever post tightly in spacing annular through the elastic component, fix a position the ejector pin through the gag lever post, when injection moulding device drive roof moves to mould one side, the gag lever post can drive the ejector pin of location and move to mould one side, the strengthening rib of prevention product is deviate from the spacing inslot, when spacing step butt is on the mould, the toper butt face of gag lever post is followed the spacing inslot roll-off, the roof continues to remove the product drawing of patterns.

Drawings

FIG. 1 is a drawing of a product release structure in the context of an embodiment of the present application;

FIG. 2 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 3 is a cross-sectional view of the overall structure of an embodiment of the present application;

FIG. 4 is an enlarged view of area A of FIG. 3;

fig. 5 is an enlarged view of the region B in fig. 3.

Reference numerals are as follows: 1. a lower die holder; 11. avoiding holes; 12. positioning blocks; 121. a sliding hole; 2. a mold; 3. ejecting the assembly; 31. positioning the ejector rod; 311. positioning a groove; 312. the limiting ring is convex; 313. a limiting step; 314. a limiting ring groove; 32. a thimble; 33. a top plate; 331. mounting grooves; 34. mounting blocks; 341. a limiting hole; 342. an anti-drop part; 35. a limiting rod; 351. an abutting portion; 352. a tapered abutment surface; 36. an elastic member; 37. an adjusting screw; 38. a support block; 381. a sliding groove; 4. obliquely ejecting; 41. a slider; 5. a fixing plate; 6. a product; 61. a bending section; 62. and (5) reinforcing ribs.

Detailed Description

The present application is described in further detail below with reference to figures 2-5.

The embodiment of the application discloses a secondary ejection mechanism of an injection mold, and with reference to fig. 2 and 3, the secondary ejection mechanism comprises a lower die holder 1, a mold 2 fixed on the upper side of the lower die holder 1 and an ejection assembly 3 used for demolding a product 6, wherein an inclined top 4 used for forming a bent part 61 of the product 6 is obliquely arranged on one side of the mold 2, the upper end of the inclined top 4 inclines towards one side of the mold 2, an avoidance hole 11 is formed in the position, corresponding to the inclined top 4, on the lower die holder 1, the inclined top 4 penetrates through the avoidance hole 11, a positioning block 12 is fixed on the position, corresponding to the avoidance hole 11, on the lower side of the lower die holder 1 through a bolt, a sliding hole 121 matched with the inclined top 4 in a sliding manner is formed in the positioning block 12, and the inclined top 4 is slidably inserted into the sliding hole 121; two fixing plates 5 used for connecting the injection mold 2 are further fixed on the lower side surface of the lower mold base 1, and the fixing plates 5 are respectively located at two ends of the lower mold base 1.

Referring to fig. 3-5, the ejection assembly 3 includes a positioning ejection rod 31, a plurality of ejector pins 32 and a top plate 33, the ejector pins 32 are uniformly distributed and vertically penetrate through the mold 2, and the ejector pins 32 are in sliding fit with the mold 2; the top plate 33 is a horizontally disposed plate body, the top plate 33 is located between the two fixing plates 5, and the lower ends of the ejector pins 32 are fixed on the top plate 33. The positioning ejector rod 31 is a rod body parallel to the ejector pin 32, the upper end of the positioning ejector rod 31 is provided with a positioning groove 311 for forming the reinforcing ribs 62 of the product 6, one end of the positioning rod, which is far away from the positioning groove 311, penetrates through the top plate 33 and is in sliding fit with the top plate 33, the lower end of the positioning ejector rod 31 is integrally provided with a limiting ring bulge 312, and the limiting ring bulge 312 abuts against the lower side of the top plate 33; a limiting step 313 with the diameter larger than that of the positioning ejection rod 31 is coaxially and integrally arranged on the positioning ejection rod 31 below the mold 2, when the injection molding equipment drives the top plate 33 to move upwards to eject the product 6, after the inclined top 4 is separated from the product 6, the limiting step 313 is abutted to the lower end of the mold 2, so that the positioning ejection rod 31 stops moving, the ejector pin 32 continues to move upwards, and the reinforcing ribs 62 of the product 6 are ejected from the positioning grooves 311.

The ejection assembly 3 further includes an installation block 34, a limiting rod 35 and an elastic member 36, wherein an installation groove 331 is formed in the lower side surface of the top plate 33 on one side where the ejection rod 31 is located, and the installation block 34 is fixed in the installation groove 331 through a bolt. A limiting ring groove 314 with a semicircular cross-sectional profile is coaxially formed in the position, corresponding to the mounting block 34, of the positioning ejector rod 31, a limiting hole 341 penetrates through the mounting block 34, and the axis of the limiting hole 341 is perpendicular to the axis of the positioning ejector rod 31. The limiting rod 35 is slidably inserted into the limiting hole 341, an anti-falling part 342 is coaxially and integrally arranged at one end, close to the positioning ejector rod 31, of the limiting hole 341 on the mounting block 34, the anti-falling part 342 is a circular platform with the diameter smaller than that of the limiting hole 341, and the anti-falling part 342 is in sliding fit with the limiting rod 35; an abutting portion 351 slidably engaged with the stopper hole 341 is coaxially and integrally provided at an end of the stopper rod 35 remote from the positioning ejector rod 31, and the abutting portion 351 is an annular projection. The elastic element 36 is a compression spring, the elastic element 36 is installed in the limiting hole 341, an adjusting screw 37 is screwed at one end of the limiting block far away from the positioning ejector rod 31, and the abutting force of the elastic element 36 on the limiting rod 35 can be adjusted by screwing or unscrewing the screw. One end of the limiting rod 35 close to the positioning ejection rod 31 is provided with a conical abutting surface 352 matched with the limiting ring groove 314, and the limiting rod 35 is tightly abutted in the limiting ring groove 314 under the action of the elastic piece 36.

Referring to fig. 2 and 3, a support block 38 is fixed to the top plate 33 at a position corresponding to an end of the slanted ejecting portion 4, and one end of the slanted ejecting portion 4 near the top plate 33 abuts against the support block 38, so that when the top plate 33 is driven by the injection molding apparatus to move toward the lower die holder 1, the slanted ejecting portion 4 slides along the slide hole 121, and one end of the slanted ejecting portion 4 abutting against the support block 38 moves horizontally. The supporting block 38 is provided with a sliding groove 381 along the horizontal moving direction of the lifter 4, and the end of the lifter 4 is slidably inserted into the sliding groove 381, so that the lifter 4 can be prevented from being displaced in the ejecting process. The sliding groove 381 is a T-shaped groove, the sliding block 41 is rotatably fixed on two side surfaces of one end of the inclined top 4 close to the sliding groove 381, the sliding block 41 is slidably inserted into the sliding groove 381, and when the top plate 33 is reset, the supporting block 38 drives the sliding block 41 to move downwards, so that the inclined top 4 is driven to reset.

The embodiment of the application discloses an injection mould quadratic term ejection mechanism's implementation principle does: by arranging the ejection assembly 3, when the product 6 is demoulded, the ejector pin 32, the inclined ejector 4 and the positioning ejection rod 31 are ejected out to one side of the product 6 through the top plate 33, and the positioning ejection rod 31 can move along with the top plate 33 because the limiting rod 35 is abutted and connected in the limiting ring groove 314 under the abutting of the elastic piece 36; in the process that the top plate 33 moves upwards, the pitched roof 4 slides in the sliding hole 121, one end, close to the product 6, of the pitched roof 4 moves horizontally towards the inner side of the product 6, and as the reinforcing ribs 62 of the product 6 are inserted into the positioning grooves 311, the product 6 cannot move along with the product when the pitched roof 4 moves horizontally, so that the pitched roof 4 is separated from the product 6; after the limiting step 313 of the positioning ejector rod 31 is abutted against the lower die 2, the top plate 33 continues to move upwards, the limiting rod 35 can slide out of the limiting ring groove 314, the positioning ejector rod 31 stops moving, the ejector pin 32 continues to move upwards to eject the reinforcing rib 62 of the product 6 out of the positioning ejector rod 31, the product 6 is demoulded, and the whole structure is simple and practical.

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

Claims

1. The utility model provides an injection mould secondary ejection mechanism, includes that set up in lifter (4) and a plurality of thimble (32) that run through the mould of mould one side, its characterized in that: still including location knock-out pin (31), location knock-out pin (31) run through the mould and with thimble (32) are parallel, location knock-out pin (31) and mould sliding fit, location knock-out pin (31) are close to the one end of product and offer constant head tank (311) that are used for the shaping product strengthening rib, the one end that the mould was kept away from in location knock-out pin (31) is provided with spacing step (313).

2. The injection mold double ejection mechanism of claim 1, wherein: still include roof (33), roof (33) are located the mould below, the one end that the mould was kept away from in thimble (32) is fixed in on roof (33), location knock-out lever (31) run through roof (33) and with roof (33) sliding fit, location knock-out lever (31) are close to the one end of roof (33) is provided with spacing collar protruding (312), spacing collar protruding (312) butt in the one side of mould is kept away from in roof (33).

3. The injection mold double ejection mechanism of claim 2, wherein: spacing annular (314) have been seted up to the one end that location knock-out pole (31) were close to spacing protruding (312), correspond on roof (33) spacing hole (341) have been seted up in spacing annular (314), the axis perpendicular to of spacing hole (341) the axis of location knock-out pole (31), spacing hole (341) internal slipping has gag lever post (35), gag lever post (35) are close to the one end of spacing annular (314) is provided with toper butt face (352), in spacing hole (341) in gag lever post (35) are kept away from the one end of location knock-out pole (31) is provided with elastic component (36), gag lever post (35) quilt elastic component (36) butt in on location knock-out pole (31).

4. The injection mold double ejection mechanism of claim 3, wherein: still including installation piece (34), spacing hole (341) are seted up on installation piece (34), gag lever post (35) with elastic component (36) all install in on installation piece (34), roof (33) go up in mounting groove (331) have been seted up to one side of location knock-out lever (31), installation piece (34) are fixed in mounting groove (331).

5. The injection mold double ejection mechanism of claim 4, wherein: and an adjusting screw (37) is arranged at one end of the limiting hole (341) far away from the limiting rod (35).

6. The injection mold double ejection mechanism of claim 2, wherein: still including lower bolster (1) that is used for fixed die utensil, correspond on lower bolster (1) dodge hole (11) have been seted up to the position of oblique top (4), on lower bolster (1) in dodge hole (11) department and be fixed with locating piece (12), set up the hole of sliding (121) of slope on locating piece (12), oblique top (4) sliding insert in slide hole (121).

7. The injection mold double ejection mechanism of claim 2, wherein: follow on roof (33) oblique top (4) horizontal slip's direction has been seted up and has been slided groove (381), oblique top (4) are close to the one end of roof (33) is slided and is inserted in slide groove (381).

8. The injection mold double ejection mechanism of claim 6, wherein: one side of the lower die holder (1) close to the top plate (33) is fixedly provided with a fixing plate (5) used for being connected with injection molding equipment, and the fixing plate (5) is provided with two sides which are respectively located on the top plate (33).