CN214982791U - Injection mold device for discharge port base - Google Patents

Abstract

The utility model discloses a discharge gate base injection mold device, including last mould, lower mould, go up and decide the mold core down, the lower mould can be dismantled and connect in the bottom of last mould, has seted up first product shaping chamber on the lower mould, and two slider jacks have been seted up to the symmetry on the lower mould lateral wall, all slides in every slider jack and is provided with a set of sliding block set spare. The upper fixed die core is embedded in the inner cavity at the bottom of the upper die, and the upper fixed die core is matched with the first product forming cavity for use. The sliding block assembly comprises a large sliding block and a small sliding block, the large sliding block is connected with a sliding block jack in a sliding mode, a second product forming cavity is formed in the large sliding block, the small sliding block is embedded and installed in the inserting groove, and a third forming step matched with the second forming step is formed in the small sliding block. The utility model discloses can effectively reduce the frictional force between finished product and the slider, the product surface does not have the mar after the drawing of patterns, guarantees the quality of product, reduces the defective percentage.

Description

Injection mold device for discharge port base

Technical Field

The utility model relates to an injection mold equipment technical field especially relates to a discharge gate base injection mold device.

Background

In the liquid storage and transportation industry, disposable liquid bags are widely used for packaging in order to better save cost and facilitate storage and transportation. The using method of the liquid packaging bag comprises the steps of filling liquid from the feeding hole, sealing, transporting to a client site for storage, and discharging to a split charging production line through the discharging hole. When liquid is filled into the liquid packaging bag, a plastic nozzle device is required to be arranged at the feed inlet so as to conveniently inject liquid into the bag, the bag is transported to a client site for storage after being sealed, and then the plastic nozzle device at the discharge outlet is unloaded to a subpackage production line.

In the prior art, a discharge port plastic nozzle device is integrally formed by using an injection mold. The Chinese patent with the patent publication number of CN211891772U provides a die structure without a joint line on a welding surface of a product, which comprises an upper die, a lower die, a sliding block and a die core, wherein two sliding block jacks are symmetrically arranged on the side wall of each die core jack, a sliding block which is in sliding connection with each sliding block jack is arranged in each sliding block jack, the sliding blocks are symmetrically arranged, and the inner side surfaces of the sliding blocks are matched with the side walls of the die core jacks which are connected.

This technical scheme need the drawing of patterns to take out the product after the completion of moulding plastics, because slider formula structure as an organic whole among this technical scheme leads to moulding plastics the completion back, and the flange of product and the frictional force between the slider recess are great, and the drawing of patterns of force may fish tail product surface, forms the mar, influences the quality of product.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a discharge gate base injection mold device effectively reduces the frictional force between finished product and the slider, and the product surface does not have the mar after the drawing of patterns, guarantees the quality of product, reduces the defective percentage.

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

an injection mold device for a discharge port base comprises an upper mold, a lower mold, an upper fixed mold core and a lower fixed mold core, and is characterized in that the lower mold is detachably connected to the bottom of the upper mold, a first product forming cavity is formed in the lower mold, the first product forming cavity sequentially comprises a first positioning groove, a first forming step, an upper mold core jack and a lower mold core jack which are coaxially arranged from top to bottom, two slide block jacks are symmetrically formed in the side wall of the lower mold, and a group of slide block assemblies are arranged in each slide block jack in a sliding mode; the upper fixed die core is embedded in an inner cavity at the bottom of the upper die and is matched with the first product forming cavity for use; the sliding block assembly comprises a large sliding block and a small sliding block, the large sliding block is connected with a sliding block jack in a sliding mode, a second product forming cavity is arranged on the large sliding block, the second product forming cavity sequentially comprises a second positioning groove, an inserting groove, a second forming step and an internal thread groove from top to bottom, the small sliding block is embedded and installed in the inserting groove, and a third forming step matched with the second forming step is formed in the small sliding block; the top of the lower fixed mold core extends into the lower mold core jack and abuts against the bottom of the upper fixed mold core, and the lower fixed mold core is matched with the second product forming cavity for use.

Further setting the following steps: a first lug is fixedly arranged at the bottom of the upper fixed mold core integrally, the diameter of the first lug is smaller than that of the upper mold core jack, and a gap is formed between the lower end face of the first lug and the upper end face of the large slide block; and a second bump is fixedly arranged on the lower end face of the first bump integrally, and the circumference of the second bump is smaller than that of the second positioning groove.

Further setting the following steps: a positioning ring is fixedly arranged at the bottom of the upper die in an integrated mode, and the outer wall of the positioning ring abuts against the first positioning groove.

Further setting the following steps: the mould is seted up the hole of moulding plastics on the mould, go up the cover half core and seted up the runner, the both ends of runner communicate the hole of moulding plastics and first product shaping chamber respectively.

Further setting the following steps: the lower fixed die core comprises a central support, three large die core bodies and three small die core bodies, wherein the large die core bodies and the small die core bodies are arranged on the periphery of the central support in a surrounding mode at intervals.

Further setting the following steps: the top of center pillar is hexagonal prism, and its six sides interval in proper order is provided with first spout and first fin, the second spout with fin sliding connection is seted up towards one side of center pillar to the large mold core body, one side towards center pillar of the small mold core body has set firmly the second fin with first spout sliding connection.

Further setting the following steps: and external threads are arranged on the top ends of the large die core body and the small die core body, which are back to one side of the central pillar.

Further setting the following steps: the large die core body and the small die core body are arranged below the external thread to form wedge-shaped sections, and the side walls of the wedge-shaped sections are abutted to the lower die core insertion holes.

Further setting the following steps: the big slider is provided with a forming lug at the lower end of the internal thread groove.

Further setting the following steps: the upper die and the lower die are fixedly connected through a first bolt, and the upper die and the upper fixed die core are fixedly connected through a second bolt.

Compared with the prior art, the beneficial technical effects of the utility model are that:

(1) the utility model discloses set up traditional integral type slider into the form of big slider and the mutual gomphosis of little slider, effectively reduced the flange of accomplishing back discharge gate base of moulding plastics and the frictional force between the slider, through successively taking out little slider and big slider from the slider jack, can the drawing of patterns smoothly to guarantee the quality of product, reduce the defective percentage.

(2) The injection molding pressure, the injection molding time, the pressure maintaining time and the mold locking pressure can be reduced through the exhaust groove, so that the production efficiency is improved, the production cost is reduced, and the energy consumption of equipment is reduced.

Drawings

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

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is an exploded schematic view of the present invention;

FIG. 3 is a schematic structural view of the slider assembly of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 5 is an enlarged view of portion B of FIG. 4;

fig. 6 is a schematic structural view of the middle combined lower mold core of the present invention;

fig. 7 is a usage state diagram of the present invention.

Reference numerals:

1. upper die 11, positioning ring 12 and injection molding hole

13. First bolt 14, second bolt 2, lower mould

21. First positioning groove 22, first forming step 23 and upper die core insertion hole

24. Lower die core jack 25, slider jack 3 and upper fixed die core

31. First bump 32, second bump 33, flow channel

4. Lower fixed mold core 41, center pillar 411 and first sliding groove

412. First convex rib 42, large die core body 421 and second sliding groove

422. External thread 423, wedge-shaped section 43 and small die core body

431. Second convex rib 5, slide block component 51 and large slide block

511. Second positioning groove 512, inserting groove 513 and second forming step

514. Internal thread groove 515, forming projection 516 and exhaust groove

52. Small slide block 521, third forming step 6 and slide block seat

7. Oblique pressing block 8 and oblique guide pillar

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Referring to fig. 1 and 2, for the utility model discloses a discharge gate base injection mold device, including last mould 1, lower mould 2, go up cover half core 3 and lower cover half core 4, lower mould 2 can dismantle through first bolt 13 and connect in the bottom of last mould 1, has seted up first product shaping chamber along vertical direction on lower mould 2, and first product shaping chamber is provided with two. The first product forming cavity sequentially comprises a first positioning groove 21, a first forming step 22, an upper die core jack 23 and a lower die core jack 24 (shown in figure 4) which are coaxially arranged from top to bottom, the first positioning groove 21 and the first forming step 22 are annular, and the circumference of the lower die core jack is gradually increased from top to bottom. Two slider jacks 25 have been seted up along the horizontal direction symmetry to 2 lateral walls of lower mould, go up die core jack 23 and lower die core jack 24 and all be linked together with slider jack 25, all slide in every slider jack 25 and be provided with a set of sliding block set 5.

Go up cover half core 3 and inlay the bottom inner chamber of installing in last mould 1, go up cover half core 3 and go up through second bolt 14 fixed connection between the mould 1, go up cover half core 3 and first product shaping chamber and cooperate and use.

Referring to fig. 3, the slide block assembly 5 includes a large slide block 51 and a small slide block 52, the large slide block 51 is slidably connected with the slide block insertion hole 25, a second product forming cavity coaxially arranged with the first product forming cavity is formed in the large slide block 51, the second product forming cavity sequentially includes a second positioning groove 511, a slot 512, a second forming step 513 and an internal thread groove 514 from top to bottom, and the slot 512 penetrates through the side wall of the large slide block 51 along the horizontal direction. The big sliding block 51 is provided with a molding lug 515 at the lower end of the internal thread groove 514, so as to form an anti-theft hole on the discharge port base. The small sliding block 52 is embedded in the insertion groove 512 (shown in fig. 2), and the small sliding block 52 is provided with a third forming step 521 matching with the second forming step 513, and the second forming step 513 and the third forming step 521 are both annular and have the same diameter.

The upper end surface of the large slider 51 is provided with an exhaust groove 516, the melt enters the first product molding cavity and the second product molding cavity, and the gas existing in the cavities and the gas generated by the decomposition of the plastic at high temperature are exhausted outwards through the exhaust groove 516. The exhaust groove 516 greatly reduces the injection molding pressure, the injection molding time, the pressure maintaining time and the mold locking pressure, thereby improving the production efficiency, reducing the production cost and reducing the energy consumption of the equipment.

Referring to fig. 4 and 5, the lower end surface of the upper fixed mold core 3 abuts against the bottom end surface of the first positioning groove 21, a first bump 31 is fixedly arranged at the bottom of the upper fixed mold core 3 integrally, the diameter of the first bump 31 is smaller than that of the core insertion hole of the upper mold 1, and a gap is formed between the lower end surface of the first bump 31 and the upper end surface of the large slide block 51. The lower end face of the first bump 31 is integrally and fixedly provided with a second bump 32, and the circumference of the second bump 32 is smaller than the circumference of the second positioning groove 511.

Referring to fig. 4, a positioning ring 11 is fixedly arranged at the bottom of the upper die 1, and the outer wall of the positioning ring 11 abuts against the first positioning groove 21, so that the upper die 1 and the lower die 2 can be conveniently embedded with each other for positioning.

Referring to fig. 2, the upper die 1 is provided with an injection hole 12, the upper fixed die core 3 is provided with a runner 33, and two ends of the runner 33 are respectively communicated with the injection hole 12 and the first product forming cavity. Melt flows from injection orifice 12 through flow passage 33 into the first product-forming cavity.

Referring to fig. 4 and 6, the top of the lower fixed die core 4 extends into the core insertion hole 14 of the lower die 2 and abuts against the bottom of the upper fixed die core 3, and the lower fixed die core 4 is matched with the second product forming cavity for use. The lower fixed die core 4 comprises a central pillar 41, three large die core bodies 42 and three small die core bodies 43, wherein the large die core bodies 42 and the small die core bodies 43 are arranged around the peripheral side of the central pillar 41 at intervals. The top of the center pillar 41 is a hexagonal prism, six sides of the center pillar are sequentially provided with a first sliding groove 411 and a first protruding rib 412 at intervals, one side of the large mold core body 42 facing the center pillar 41 is provided with a second sliding groove 421 connected with the protruding rib in a sliding manner, and one side of the small mold core body 43 facing the center pillar 41 is fixedly provided with a second protruding rib 431 connected with the first sliding groove 411 in a sliding manner. The sides of the large die core body 42 and the small die core body 43, which face away from the central pillar 41, are provided with external threads 422 at the top ends thereof.

The large die core body 42 and the small die core body 43 are arranged into a wedge-shaped section 423 below the external thread 422, and the side wall of the wedge-shaped section 423 is abutted with the core insertion hole 14 of the lower die 2.

Referring to fig. 7, a specific embodiment of the abutment structure of the present application comprises: a slider seat 6, an inclined pressing block 7, an inclined guide post 8 and the like. The large slide block 51 and the slide block seat 6 are positioned through a positioning groove and fixed through screws; the slide block seat 6 is fixed on the movable mould plate, and the inclined pressing block 7 and the inclined guide post 8 are fixed on the fixed mould plate. When the die is closed, the inclined pressing block 7 presses the slider seat 6, and the two groups of slider assemblies 5 are pressed by the slider seat 6 to abut against each other.

The utility model discloses a theory of operation and beneficial effect do:

after the upper die 1 and the lower die 2 are tightly closed, the small slide block 52 is embedded into the slot 512 of the large slide block 51, then the large slide block 51 is embedded into the slide block jack 25 of the lower die 2, and the large slide blocks 51 at two sides are butted and attached under the extrusion of the slide block seat 6. The molten material enters the first product molding cavity and the second product molding cavity from the injection molding hole 12 through the flow passage 33 in sequence, and is solidified and molded. When the mold is opened, the upper mold 1 and the lower mold 2 are separated, the inclined guide post 8 pulls the slide block seat 6 open, the small slide block 52 is pulled out from the slot 512, then the large slide block 51 is pulled out from the slide block jack 25, the product is taken out, and the surface of the product has no scratch, so that the quality of the product is ensured, and the defective rate is reduced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A discharge port base injection mold device comprises an upper mold (1), a lower mold (2), an upper fixed mold core (3) and a lower fixed mold core (4), and is characterized in that the lower mold (2) is detachably connected to the bottom of the upper mold (1), a first product molding cavity is formed in the lower mold (2), the first product molding cavity sequentially comprises a first positioning groove (21), a first molding step (22), an upper mold core jack (23) and a lower mold core jack (24) which are coaxially arranged from top to bottom, two slider jacks (25) are symmetrically formed in the side wall of the lower mold (2), and a group of slider assemblies (5) is slidably arranged in each slider jack (25);

the upper fixed mold core (3) is embedded in an inner cavity at the bottom of the upper mold (1), and the upper fixed mold core (3) is matched with the first product forming cavity for use;

the sliding block assembly (5) comprises a large sliding block (51) and a small sliding block (52), the large sliding block (51) is connected with a sliding block jack (25) in a sliding mode, a second product forming cavity is formed in the large sliding block (51), the second product forming cavity sequentially comprises a second positioning groove (511), an insertion groove (512), a second forming step (513) and an internal thread groove (514) from top to bottom, the small sliding block (52) is embedded in the insertion groove (512), and a third forming step (521) matched with the second forming step (513) is formed in the small sliding block (52);

the top of the lower fixed mold core (4) extends into the lower mold core jack and abuts against the bottom of the upper fixed mold core (3), and the lower fixed mold core (4) is matched with the second product forming cavity for use.

2. A discharge port base injection mold device according to claim 1, wherein a first protrusion (31) is fixedly arranged at the bottom of the upper fixed mold core (3) integrally, the diameter of the first protrusion (31) is smaller than that of the upper mold core insertion hole (23), and a gap is formed between the lower end surface of the first protrusion (31) and the upper end surface of the large slide block (51); and a second bump (32) is fixedly arranged on the lower end face of the first bump (31) in an integrated manner, and the circumference of the second bump (32) is smaller than that of the second positioning groove (511).

3. A discharge gate base injection mold device according to claim 2, characterized in that a positioning ring (11) is integrally and fixedly arranged at the bottom of the upper mold (1), and the outer wall of the positioning ring (11) abuts against the first positioning groove (21).

4. A discharge gate base injection mold device according to claim 1, characterized in that, the upper mold (1) is provided with an injection molding hole (12), the upper fixed mold core (3) is provided with a flow channel (33), and two ends of the flow channel (33) are respectively communicated with the injection molding hole (12) and the first product molding cavity.

5. A discharge outlet base injection mold device according to claim 1, wherein the lower fixed mold core (4) comprises a central pillar (41), three large mold cores (42) and three small mold cores (43), and the large mold cores (42) and the small mold cores (43) are arranged around the central pillar (41) at intervals.

6. A discharge outlet base injection mold device according to claim 5, wherein the top of the central pillar (41) is a hexagonal prism, six sides of the central pillar are sequentially provided with a first sliding groove (411) and a first rib (412) at intervals, one side of the large mold core (42) facing the central pillar (41) is provided with a second sliding groove (421) in sliding connection with the rib, and one side of the small mold core (43) facing the central pillar (41) is fixedly provided with a second rib (431) in sliding connection with the first sliding groove (411).

7. A discharge gate base injection mold device as claimed in claim 6, characterized in that the sides of the large mold core body (42) and the small mold core body (43) facing away from the center pillar (41) are provided with external threads (422) at the top ends thereof.

8. A discharge gate base injection mold device according to claim 7, characterized in that the large die core body (42) and the small die core body (43) are arranged as a wedge-shaped section (423) below the external thread (422), and the side wall of the wedge-shaped section (423) abuts against the lower die core insertion hole (24).

9. A discharge gate base injection mold device as claimed in claim 1, wherein the large slide block (51) is provided with a molding projection (515) at the lower end of the internal thread groove (514).

10. A discharge gate base injection mold device as claimed in claim 1, wherein the upper mold (1) and the lower mold (2) are fixedly connected through a first bolt (13), and the upper mold (1) and the upper fixed mold core (3) are fixedly connected through a second bolt (14).

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