CN212400215U

CN212400215U - Bumper mold

Info

Publication number: CN212400215U
Application number: CN202020393501.1U
Authority: CN
Inventors: 刘尚峰; 江余粮; 段志平
Original assignee: Shenzhen Silver Basis Technology Co Ltd
Current assignee: Shenzhen Silver Basis Technology Co Ltd
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2021-01-26
Anticipated expiration: 2030-03-24

Abstract

The utility model provides a bumper mould, bumper mould includes: a base; the rear mold core, the large jacking block and the large inclined jack are all arranged on the base; the inclined ejection component is arranged on the base and at least comprises an inclined ejection block, and the inclined ejection block, the rear mold core, the large ejection block and the large inclined ejection block surround to form an injection molding cavity; the die comprises an inclined ejector block, a feed chute, a die cavity and a die cavity, wherein the inclined ejector block is provided with the feed chute, the feed chute is provided with an inclined side wall, the inclined side wall and the chute bottom of the feed chute form an obtuse angle, and the die drawing angle of the inclined ejector block is larger than or equal to the obtuse angle. The utility model discloses in, can not take place to interfere with runner or runner during the oblique kicking block drawing of patterns, can guarantee that runner or runner break away from the blown down tank smoothly to can protect the oblique kicking block to avoid the scraping, prolong life, and avoid runner deformation card to be difficult to the phenomenon of demolding in the blown down tank.

Description

Bumper mold

Technical Field

The utility model relates to an injection mold field, in particular to bumper mould.

Background

In the injection molding process, liquid plastic flows into a cavity from a feeding channel of a mold and then is cooled in the cavity to form a product, the liquid plastic is often reserved in the feeding channel and is condensed and formed together with the product to form a sprue and a runner which need to be removed after demolding, and for the product needing oblique demolding, the runner or the sprue is often easily scraped with the feeding channel during demolding, so that the runner or the sprue is easily deformed in the feeding channel to cause difficulty in demolding or damage to the mold.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bumper mould, during aiming at solving prior art, product demolding, runner or runner on the product often easy and feedstock channel scraping lead to runner or runner to take place deformation in feedstock channel easily, cause the problem of demolding difficulty.

In order to achieve the above object, the utility model provides a bumper mould, bumper mould includes:

a base;

the rear mold core, the large jacking block and the large inclined jack are all arranged on the base;

the inclined ejection component is arranged on the base and at least comprises an inclined ejection block, and the inclined ejection block, the rear mold core, the large ejection block and the large inclined ejection block surround to form an injection molding cavity;

the die comprises an inclined ejector block, a feed chute, a die cavity and a die cavity, wherein the inclined ejector block is provided with the feed chute, the feed chute is provided with an inclined side wall, the inclined side wall and the chute bottom of the feed chute form an obtuse angle, and the die drawing angle of the inclined ejector block is larger than or equal to the obtuse angle.

Optionally, the lifter assembly further includes a link rod and a sliding block, the lifter block and the sliding block are oppositely disposed at two ends of the link rod, the sliding block is inclined and slidably connected with the base, and an inclination angle of the sliding block is equal to the die-drawing angle, so as to push the link rod to drive the lifter block to draw the die at the die-drawing angle.

Optionally, the obtuse angle formed by the inclined side wall and the bottom of the feed chute is greater than or equal to 135 °.

Optionally, the base includes thimble bottom plate and thimble panel, thimble panel sets up on the thimble bottom plate, the holding hole has been seted up on the thimble panel, sliding block sliding connection be in the holding hole.

Optionally, the lifter assembly further comprises a guide plate, the guide plate is fixed in the accommodating hole, a sliding rail is arranged on the guide plate, and the sliding block is matched with the sliding rail to form sliding connection.

Optionally, the two guide plates are fixed in the accommodating hole, the two guide plates are arranged oppositely, the sliding block is connected between the two guide plates in a sliding manner, the lifter assembly further comprises a pulling plate, and two ends of the pulling plate are fixed on the two guide plates.

Optionally, the lifter assembly further comprises a guide rod, the guide rod is obliquely fixed on the ejector pin base plate, the inclination angle of the guide rod is equal to the mold stripping angle of the lifter block, and the sliding block is sleeved on the guide rod.

Optionally, the lifter assembly further comprises a fixing block, the fixing block is fixed on the guide rod, a mounting groove is formed in the ejector base plate, and the fixing block is mounted in the mounting groove.

Optionally, the link rod is sleeved with a link rod sleeve.

The utility model discloses technical scheme is through all setting up back mold core, oblique top subassembly, big kicking block and big oblique top on the base, and wherein, the top subassembly includes oblique kicking block at least to one side, and oblique kicking block encloses the formation die cavity of moulding plastics with back mold core, big kicking block and big oblique top to one side, has seted up the feed chute on the kicking block to one side, and the feed chute has a slope lateral wall, and the slope lateral wall forms the obtuse angle with the tank bottom of feed chute, and the lift die angle of kicking block to one side is greater than or equal to the obtuse angle. Because the inclined ejecting block is separated towards an inclined direction during mold stripping, the angle formed by the inclined direction and the horizontal plane is the mold stripping angle of the inclined ejecting block, the mold stripping angle is equal to or slightly larger than the obtuse angle formed by the inclined side wall of the feeding chute and the chute bottom, the inclined ejecting block cannot interfere with the runner or the sprue during mold stripping, the sprue or the runner can be ensured to be separated from the discharging chute smoothly, the inclined ejecting block can be protected from being scraped, the service life is prolonged, and the phenomenon that the runner is deformed and clamped in the discharging chute and is difficult to strip is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a partial schematic structural view of an embodiment of a bumper mold according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at B;

FIG. 3 is a schematic structural view of the lifter assembly, the runner and the gate of the bumper mold according to the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

fig. 5 is a schematic structural view of the angle ejector block of the bumper mold of the present invention;

fig. 6 is a schematic structural view of a runner and a gate.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				11	Base plate	25	Guide rod
12	Thimble bottom plate	26	Sliding block
				13	Thimble panel	27	Guide plate
14	B board	271	Sliding rail
				15	Square iron	28	Fixed block
2	Pitched roof assembly	3	Rear mold core
				21	Inclined ejector block	4	Large top block
211	Feed chute	5	Hot nozzle
				212	Inclined side wall	6	Large inclined top
22	Link rod	71	Flow passage
				23	Connecting rod sleeve	711	Runner inclined plane
24	Pulling plate	72	Pouring gate

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1 to 3, to achieve the above object, the present invention provides a bumper mold, which includes: a base; the rear mold core 3, the large jacking block 4 and the large inclined roof 6 are arranged on the base; the inclined top component 2 is arranged on the base, the inclined top component 2 at least comprises an inclined top block 21, and the inclined top block 21, the rear mold core 3, the large top block 4 and the large inclined top 6 surround to form an injection molding cavity (not marked in the figure); the inclined top block 21 is provided with a feeding groove 211 (as shown in fig. 4), the feeding groove 211 has an inclined side wall 212, the inclined side wall 212 and the groove bottom of the feeding groove 211 form an obtuse angle (as shown in fig. 5), and the mold drawing angle a) of the inclined top block 21 is greater than or equal to the obtuse angle.

As shown in fig. 1, the injection mold cavity is formed by enclosing an inclined top assembly 2, a rear mold core 3, a large top block 4 and a large inclined top 6 which are arranged on a base, a hot nozzle 5 is used for pouring injection liquid, the base specifically comprises a bottom plate 11, and an ejector pin bottom plate 12 and an ejector pin panel 13 which are sequentially arranged on the bottom plate 11, square irons 15 and a B plate 14 which play a supporting role are installed on the ejector pin panel 13, and the inclined top block 21, the rear mold core 3, the large top block 4 and the large inclined top 6 are all installed on the B plate 14. In a specific implementation, as shown in fig. 3 and 4, a part of the lifter assembly 2 participating in forming the injection molding cavity is a lifter block 21, a feeding groove 211 is formed in the lifter block 21 and used for feeding a plastic liquid, the feeding groove 211 is communicated with the injection molding cavity, the plastic liquid enters the injection molding cavity from the feeding groove 211 and is cooled and molded in the injection molding cavity to form a product, the injection liquid remains in the feeding groove 211, and a gate 72 or a runner 71 (shown in fig. 6) integrated with the product is formed after cooling.

In this embodiment, the opening of the feeding channel 211 is upward and has two opposite sidewalls and a bottom, wherein one sidewall 212 is disposed obliquely and forms an obtuse angle with the bottom, so that the gate 72 or the runner 71 formed in the feeding channel 211 by cooling will also change from the original right angle to an obtuse angle, and the surface has a runner inclined plane 711. When the inclined ejecting block 21 is ejected, the inclined ejecting block is separated towards an inclined direction, an angle formed by the inclined direction and a horizontal plane is a mold ejection angle a (shown by an arrow in fig. 5) of the inclined ejecting block 21, the mold ejection angle a is equal to or slightly larger than an obtuse angle formed by the inclined side wall 212 of the feeding groove 211 and a groove bottom, for example, when the obtuse angle formed by the inclined side wall 212 and the groove bottom is 135 degrees, the mold ejection angle a of the inclined ejecting block 21 is 140 degrees or 145 degrees, the inclined ejecting block 21 is not interfered with the runner 71 or the sprue 72 when being ejected, the sprue 72 or the runner 71 can be ensured to be smoothly separated from the discharging groove 211, so that the inclined ejecting block 21 can be protected from being scratched, the service life is prolonged, and the phenomenon that the runner 71 is deformed and clamped in the discharging groove 211 and is difficult to.

As shown in fig. 5, the lifter block 21 is moved in a direction indicated by an arrow in the figure (forming a mold-off angle a with the horizontal plane), and the mold-off angle a is larger than or equal to the inclination angle of the inclined surface 611 of the runner 71 in the figure, so that the runner 71 or the gate 72 can be prevented from interfering with the lifter block 21.

In a further implementation, the lifter assembly 2 further includes a link 22 and a slide block 26, the lifter block 21 and the slide block 26 are disposed at two ends of the link 22 opposite to each other, the slide block 26 is inclined to form a sliding connection with the base, and an inclination angle of the slide block 26 is equal to the mold-drawing angle a, so as to push the link 22 to drive the lifter block 21 to draw the mold toward the mold-drawing angle a.

The link 22 is fixed on the sliding block 26, the sliding block 26 drives the link 22 to move, and the fixing of the link 22 and the sliding block 26 can be realized by screws. The inclined ejecting block 21 and the sliding block 26 are respectively and oppositely fixed at two ends of the connecting rod 22, the inclined ejecting block 21 is positioned at the upper end, the sliding block 26 is positioned at the lower end, the inclined ejecting block 21, the rear mold core 3, the large ejecting block 4 and the large inclined ejector 6 surround to form an injection molding cavity, the sliding block 26 and the base are in slidable connection, and the sliding direction of the sliding block 26 is consistent with the mold stripping direction, so that the inclined ejecting block 21 is driven by the connecting rod 22 to strip a mold along the mold stripping angle a, and the purpose of avoiding the interference between the runner 71 or the sprue 72 and the inclined ejecting block 21 is achieved.

In an alternative embodiment, the obtuse angle formed by the inclined sidewall 212 and the bottom of the feeding groove 211 is greater than or equal to 135 °, so that the inclined angle of the runner inclined plane 711 formed after the injection liquid remaining in the feeding groove 211 is cooled is large enough to avoid the interference of the inclined ejecting block 21 with the runner during the demolding process.

In an embodiment, the base includes a thimble base plate 12 and a thimble panel 13, the thimble panel 13 is disposed on the thimble base plate 12, a receiving hole (not labeled) is formed on the thimble panel 13, and the sliding block 26 is slidably connected in the receiving hole.

The receiving hole is used for receiving the sliding block 26, and the sliding block 26 can slide in the receiving hole, so that the sliding connection of the sliding block 26 and the base is formed. In a specific implementation, a slide rail 271 can be opened on the side wall of the accommodating hole, the inclination angle of the slide rail 271 is consistent with the mold stripping angle a of the pitched roof block 21, and the slide block 26 is matched with the slide rail 271 to form a sliding connection, so that the link 22 pushes the pitched roof block 21 to demould in the mold stripping direction under the driving of the slide block 26. Or, a guide plate 27 may be arranged in the accommodating hole, the guide plate 27 is fixed in the accommodating hole, a slide rail 271 is arranged on the guide plate 27, the inclination angle of the slide rail 271 is consistent with the mold stripping angle a of the lifter block 21, the slide block 26 is matched with the slide rail 271 to form a sliding connection, and the slide block 26 is matched with the slide rail 271 to form a sliding connection, so that the link 22 pushes the lifter block 21 to be demolded in the mold stripping direction under the driving of the slide block 26.

The two guide plates 27 are fixed in the accommodating hole, the two guide plates are arranged oppositely, the sliding block 26 is connected between the two guide plates 27 in a sliding mode, the lifter assembly 2 further comprises a pulling plate 26, and two ends of the pulling plate 26 are fixed on the two guide plates 27.

The two guide plates 27 are both provided with a slide rail 271, the slide block 26 is matched with the slide rail 271 on the two guide plates 27 to form a sliding connection, a pulling plate 26 is arranged between the two guide plates 27, and two ends of the pulling plate 26 are respectively fixed on the two guide plates 27, so that the two guide plates 27 can be taken out from the thimble panel 13 during mold stripping.

In an embodiment, the lifter assembly 2 further includes a guide rod 25, the guide rod 25 is fixed on the ejector pin base plate 12 in an inclined manner, an inclination angle of the guide rod 25 is equal to a mold-drawing angle a of the lifter block 21, and the slide block 26 is sleeved on the guide rod 25.

The sliding block 26 is provided with a through hole (not shown), the guide rod 25 is arranged in the through hole in a penetrating manner, the guide rod 25 is arranged in an inclined manner, the guide rod 25 has a guiding effect on the sliding block 26, the inclined angle of the guide rod 25 is equal to the stripping angle a of the inclined ejecting block 21, therefore, the sliding block 26 sleeved on the guide rod 25 can be stripped according to the set stripping angle a strictly, the interference with the runner 71 or the sprue 72 is avoided, meanwhile, the thrust of the sliding block 26 acts on the connecting rod 22 and the guide rod 25 simultaneously, but not all the thrust acts on the connecting rod 22, therefore, the guide rod 25 can share part of the stress of the connecting rod 22, and the risk of fracture of the.

The lifter assembly 2 further comprises a fixing block 28, the fixing block 28 is fixed on the guide rod 25, a mounting groove (not marked in the figure) is formed in the ejector pin base plate 12, and the fixing block 28 is mounted in the mounting groove.

In this embodiment, the guide rod 25 is fixed in a mounting groove through a fixing block 28, and the mounting groove is formed on the thimble base plate 12 and is used for accommodating the fixing block 28. The fixing block 28 may be fixed with screws.

The link rod 22 is sleeved with a link rod sleeve 23 to prevent abrasion, and it is understood that the link rod 22 may be further sleeved with a wear-resistant block (not shown) to prevent abrasion.

The above is only the optional embodiment of the present invention, and not therefore the limit to the patent scope of the present invention, all the concepts of the present invention utilize the equivalent structure transformation of the content of the specification and the attached drawings, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A bumper mold, comprising:

a base;

2. The bumper mold according to claim 1, wherein the lifter assembly further comprises a link rod and a slide block, the lifter block and the slide block are disposed at two ends of the link rod opposite to each other, the slide block is inclined to form a sliding connection with the base, and the inclination angle of the slide block is equal to the mold-stripping angle, so as to push the link rod to drive the lifter block to strip the mold towards the mold-stripping angle.

3. The bumper mold of claim 2, wherein the angled sidewall forms an obtuse angle with the floor of the feed channel that is greater than or equal to 135 °.

4. The bumper mold according to claim 2, wherein the base includes an ejector pin base plate and an ejector pin panel, the ejector pin panel is disposed on the ejector pin base plate, a receiving hole is formed in the ejector pin panel, and the sliding block is slidably connected in the receiving hole.

5. The bumper mold according to claim 4, wherein the lifter assembly further includes a guide plate fixed in the receiving hole, the guide plate defines a slide rail thereon, and the slide block cooperates with the slide rail to form a sliding connection.

6. The bumper mold of claim 5, wherein two guide plates are fixed in the receiving hole, the two guide plates are disposed opposite to each other, the sliding block is slidably connected between the two guide plates, the lifter assembly further includes a pulling plate, and two ends of the pulling plate are fixed on the two guide plates.

7. The bumper mold according to claim 4, wherein the lifter assembly further comprises a guide rod, the guide rod is fixed on the ejector base plate in an inclined manner, the inclined angle of the guide rod is equal to the mold stripping angle of the lifter block, and the sliding block is sleeved on the guide rod.

8. The bumper mold according to claim 7, wherein the lifter assembly further includes a fixing block fixed to the guide rod, the ejector retainer plate has a mounting groove formed therein, and the fixing block is mounted in the mounting groove.

9. The bumper mold of claim 2, wherein the tie bars are sleeved with tie bar sleeves.