Large-space beer barrel preform injection mold

Abstract

The utility model belongs to the technical field of molds, and relates to a large-space beer barrel preform injection mold. The large-size beer barrel blank forming die comprises a fixed upper die and a fixed lower die, and four groups of large-size beer barrel blank forming structures are arranged between the fixed upper die and the fixed lower die. In the injection molding process, molten materials are synchronously injected into the four cavities through the injection molding flow dividing piece, the clamping type threaded opening forming piece is of a clamping structure, on one hand, a threaded structure of a beer barrel bottle blank can be synchronously formed in the injection molding process, on the other hand, after injection molding is completed, the clamping type threaded opening forming piece is laterally moved and opened, and the clamping type threaded opening forming piece is opened. The clamping type threaded opening forming part is arranged on the clamping type threaded opening forming part to prevent a threaded structure of a beer barrel bottle blank from being damaged during up-down demolding, the anti-sinking supporting part can achieve an anti-sinking effect on the bottom of the clamping type threaded opening forming part, the clamping type threaded opening forming part is prevented from sliding up and down in the injection molding process, and the fastening sleeve part can prevent the clamping type threaded opening forming part from sliding horizontally in the injection molding process. The stability and the injection molding precision are high.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a large-space beer barrel bottle preform injection mold. Background Art

[0002] Bottle preforms are formed by injection molding, where raw materials are filled into a mold's gun die under specific temperature and pressure. The mold is then formed under the operating conditions of the injection molding machine. After injection molding, the preforms become intermediate semi-finished products, which are then blow-molded into the final product. Plastic beer kegs also require preforms to be formed and then blow-molded into the final product. Currently, most plastic beer keg preform molds, after forming the threaded structure, inevitably come into contact with the threaded structure during the mold opening and demolding process due to their upper and lower mold opening structure, which can easily damage the threads of the beer keg preform. Furthermore, when molding large preforms, the molded structure is prone to slipping, resulting in limited stability and injection precision. Therefore, there is an urgent need to design a large-capacity beer keg preform injection mold that can overcome these drawbacks.

[0003] In order to overcome the shortcomings of the existing technology, people have proposed various solutions through continuous exploration. For example, a Chinese patent discloses an injection mold for an infusion bottle preform [application number: 201822228328.5], which includes a left mold, a right mold and an intermediate mold. The left mold includes a left support mold and a sleeve mold. A rectangular block flange support plate is installed at one end of the left support mold, and a cylindrical mold rod is coaxially connected to the other end. The right mold includes a right support mold, an end mold, a right mold and a connecting mold. A semi-spherical groove is provided at the axis of the connecting mold, and a through hole is provided at the bottom of the semi-spherical groove. The end face of the other side of the connecting mold cooperates with the cylindrical barrel cavity of the right support mold. A continuous concentric annular groove is provided on one end face of the right mold. The end face of the concentric annular groove of the right mold abuts against the through hole end at the bottom of the semi-spherical groove of the connecting mold. The frustum interfaces on both sides of the intermediate mold cooperate with the sleeve mold of the left mold and the end mold of the right mold respectively. The left mold, the right mold and the intermediate mold are combined into one to form the outer structural cavity of the infusion bottle preform. Summary of the Invention

[0004] The purpose of the utility model is to provide a large-space beer barrel preform injection mold in view of the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A large-space beer barrel bottle blank injection mold comprises a fixed upper mold and a fixed lower mold, four groups of large-size beer barrel blank molding structures are arranged between the fixed upper mold and the fixed lower mold, an injection diverter connected to the large-size beer barrel blank molding structure is provided above the fixed upper mold, the large-size beer barrel blank molding structure comprises a large-size molding inner cylinder, a clamping type threaded mouth molding part and a top molding injection cylinder, the large-size molding inner cylinder passes through the clamping type threaded mouth molding part and the top of the clamping type threaded mouth molding part extends into the top molding injection cylinder, the top molding injection cylinder is connected to the injection diverter, an anti-sinking support part is provided between the fixed lower mold and the clamping type threaded mouth molding part, and a fastening kit for fixing the clamping type threaded mouth molding part is provided between the top molding injection cylinder and the clamping type threaded mouth molding part.

[0007] In the above-mentioned large-space beer barrel bottle blank injection mold, the clamping type threaded mouth molding part includes a first threaded mouth molding splint and a second threaded mouth molding splint, and the first threaded mouth molding splint and the second threaded mouth molding splint both have semicircular cavity grooves, and the semicircular cavity grooves have thread grooves. When the first threaded mouth molding splint and the second threaded mouth molding splint are tightly attached to each other, the two thread grooves form an annular thread groove.

[0008] In the above-mentioned large-space beer barrel bottle blank injection mold, the fastening kit includes a fastening ring arranged below the top molding injection cylinder, and the tops of the first threaded mouth molding splint and the second threaded mouth molding splint both have a sleeve connection portion. When the first threaded mouth molding splint and the second threaded mouth molding splint are tightly attached to each other, the outer wall of the sleeve connection portion is snap-fitted with the inner wall of the fastening ring.

[0009] In the above-mentioned large-space beer barrel bottle blank injection mold, the anti-sinking support part includes a first support frame plate and a second support frame plate arranged on the fixed lower mold. The first support frame plate and the second support frame plate are tightly attached to each other and fit the outer wall of the large-size molding inner cylinder.

[0010] In the above-mentioned large-space beer barrel bottle preform injection mold, the bottoms of the first support frame plate and the second support frame plate are against the fixed lower mold, and the tops are against the bottoms of the first threaded mouth molding splint and the second threaded mouth molding splint.

[0011] In the above-mentioned large-space beer barrel bottle blank injection mold, a frame plate sliding connector that can reciprocate linearly in the horizontal direction is provided in the fixed lower mold, and the first support frame plate and the second support frame plate are respectively connected to the frame plate sliding connector.

[0012] In the above-mentioned large-space beer barrel bottle blank injection mold, the frame plate sliding connector includes a first bottom side slide and a second bottom side slide arranged in the fixed lower mold, the first bottom side slide is fixed to the first support frame plate by bolts, and the second bottom side slide is fixed to the second support frame plate by bolts.

[0013] In the above-mentioned large-space beer barrel bottle blank injection mold, an anti-deflection limit track bar is provided in the fixed lower mold, and the anti-deflection limit track bar is fixed to the fixed lower mold by bolts. The anti-deflection limit track bar is located between the first bottom side slide bar and the second bottom side slide bar and slides with each other.

[0014] In the above-mentioned large-space beer barrel preform injection mold, the injection diverter includes an injection main plate and an injection diverter plate arranged above the fixed upper mold.

[0015] In the above-mentioned large-space beer barrel preform injection mold, four injection tubes extending into the large-sized molding inner cylinder are provided at the bottom of the injection diverter plate.

[0016] Compared with the existing technology, the advantages of this utility model are:

[0017] 1. During the injection molding process of the utility model, the fixed upper mold and the fixed lower mold are close to each other, and the large-size molding inner cylinder, the clamping type threaded mouth molding part and the top molding injection cylinder are combined and coordinated to form a complete mold cavity for molding thick-walled and large-diameter beer keg bottle blanks. The molten material is synchronously injected into the four mold cavities through the injection molding diverter. The clamping type threaded mouth molding part adopts a clamping structure. On the one hand, the thread structure of the beer keg bottle blank can be synchronously molded during the injection molding process. On the other hand, after the injection molding is completed, the clamping type threaded mouth molding part is shifted sideways and opened to avoid damage to the thread structure of the beer keg bottle blank during upper and lower demolding. The anti-sinking support part can prevent the bottom of the clamping type threaded mouth molding part from sinking, preventing the clamping type threaded mouth molding part from sliding up and down during the injection molding process. The fastening kit can prevent the clamping type threaded mouth molding part from sliding horizontally during the injection molding process, and has high stability and injection molding accuracy.

[0018] 2. During the movement of the first support frame plate and the second support frame plate, the utility model can limit the movement of the first support frame plate and the second support frame plate through the anti-deflection limiting track bar, thereby avoiding angular deviation between the first support frame plate and the second support frame plate during the movement and improving the accuracy of displacement.

[0019] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the present utility model.

[0021] Figure 2 It is a partial structural diagram of the utility model.

[0022] Figure 3It is a partial structural diagram of the utility model in another direction.

[0023] Figure 4 It is a structural diagram of a clamping type threaded mouth forming part.

[0024] In the figure: fixed upper mold 1, fixed lower mold 2, large-size beer barrel blank molding structure 3, injection molding diverter 4, large-size molding inner cylinder 5, clamping type threaded mouth molding part 6, top molding injection molding cylinder 7, anti-sinking support part 8, fastening kit 9, first threaded mouth molding splint 10, second threaded mouth molding splint 11, semicircular cavity groove 12, thread groove 122, fastening ring 13, socket part 14, first support frame plate 15, second support frame plate 16, frame plate sliding connector 17, first bottom side slide 18, second bottom side slide 19, anti-deflection limit track bar 20, injection molding main board 21, injection molding diverter plate 22, injection molding tube 23. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figure 1-4 As shown, a large-space beer barrel bottle blank injection mold includes a fixed upper mold 1 and a fixed lower mold 2, four groups of large-size beer barrel blank molding structures 3 are arranged between the fixed upper mold 1 and the fixed lower mold 2, and an injection diverter 4 connected to the large-size beer barrel blank molding structure 3 is provided above the fixed upper mold 1, and the large-size beer barrel blank molding structure 3 includes a large-size molding inner cylinder 5, a clamping type threaded mouth molding part 6 and a top molding injection cylinder 7, the large-size molding inner cylinder 5 passes through the clamping type threaded mouth molding part 6 and the top of the clamping type threaded mouth molding part 6 extends into the top molding injection cylinder 7, the top molding injection cylinder 7 is connected to the injection diverter 4, an anti-sinking support part 8 is provided between the fixed lower mold 2 and the clamping type threaded mouth molding part 6, and a fastening kit 9 ​​for fixing the clamping type threaded mouth molding part 6 is provided between the top molding injection cylinder 7 and the clamping type threaded mouth molding part 6.

[0027] In this embodiment, during the injection molding process, the fixed upper mold 1 and the fixed lower mold 2 are close to each other, and the large-size molding inner cylinder 5, the clamping type threaded mouth molding part 6 and the top molding injection molding cylinder 7 are combined and cooperated with each other to form a complete cavity for molding thick-walled and large-diameter beer barrel bottle blanks. The molten material is synchronously injected into the four cavities through the injection molding diverter 4. The clamping type threaded mouth molding part 6 adopts a clamping structure. On the one hand, the thread structure of the beer barrel bottle blank can be synchronously molded during the injection molding process. On the other hand, after the injection molding is completed, the clamping type threaded mouth molding part 6 is shifted sideways and opened to avoid damage to the thread structure of the beer barrel bottle blank during the upper and lower demolding. The anti-sinking support part 8 can play an anti-sinking role on the bottom of the clamping type threaded mouth molding part 6 to prevent the clamping type threaded mouth molding part 6 from sliding up and down during the injection molding process. The fastening kit 9 ​​can prevent the clamping type threaded mouth molding part 6 from sliding horizontally during the injection molding process, and the stability and injection molding accuracy are high.

[0028] Combine Figure 1-4 As shown, the clamping type threaded mouth forming part 6 includes a first threaded mouth forming splint 10 and a second threaded mouth forming splint 11. The first threaded mouth forming splint 10 and the second threaded mouth forming splint 11 both have a semicircular cavity 12, and the semicircular cavity 12 has a thread groove 122. When the first threaded mouth forming splint 10 and the second threaded mouth forming splint 11 are tightly attached to each other, the two thread grooves 122 form an annular thread groove.

[0029] Specifically, during the injection molding process, the first threaded mouth molding splint 10 and the second threaded mouth molding splint 11 are tightly attached to each other, and the two thread grooves 122 form an annular thread groove, which can synchronously mold the thread structure of the beer barrel bottle blank during the injection molding process. After the injection molding is completed, the first threaded mouth molding splint 10 and the second threaded mouth molding splint 11 are separated from each other to avoid damaging the thread structure of the beer barrel bottle blank during the upper and lower demolding.

[0030] Combine Figure 2 、 Figure 4 As shown, the fastening kit 9 ​​includes a fastening ring 13 arranged below the top molding injection cylinder 7, and the tops of the first threaded mouth molding splint 10 and the second threaded mouth molding splint 11 both have a sleeve connection portion 14. When the first threaded mouth molding splint 10 and the second threaded mouth molding splint 11 are tightly attached to each other, the outer wall of the sleeve connection portion 14 is snap-fitted with the inner wall of the fastening ring 13.

[0031] In this embodiment, during the injection molding process, when the first threaded port molding splint 10 and the second threaded port molding splint 11 are tightly attached to each other, the outer wall of the sleeve 14 is snap-fitted with the inner wall of the fastening ring 13. The fixation of the fastening ring 13 can prevent the first threaded port molding splint 10 and the second threaded port molding splint 11 from sliding horizontally during the injection molding process.

[0032] The anti-sinking support part 8 includes a first support frame plate 15 and a second support frame plate 16 arranged on the fixed lower mold 2. The first support frame plate 15 and the second support frame plate 16 are tightly attached to each other and then fit into the outer wall of the large-size forming inner cylinder 5. The bottom of the first support frame plate 15 and the second support frame plate 16 are against the fixed lower mold 2, and the top is against the bottom of the first threaded mouth forming splint 10 and the second threaded mouth forming splint 11.

[0033] In this embodiment, during injection molding, the first support frame plate 15 and the second support frame plate 16 are tightly attached to each other and then fit against the outer wall of the large-size molding inner tube 5. The bottoms of the first support frame plate 15 and the second support frame plate 16 are against the fixed lower mold 2, and the tops are against the bottoms of the first threaded port molding splint 10 and the second threaded port molding splint 11, which can prevent the bottoms of the first threaded port molding splint 10 and the second threaded port molding splint 11 from sinking, and prevent the first threaded port molding splint 10 and the second threaded port molding splint 11 from sliding up and down during the injection molding process.

[0034] A frame plate sliding connector 17 capable of reciprocating linear motion in a horizontal direction is provided in the fixed lower mold 2 , and the first supporting frame plate 15 and the second supporting frame plate 16 are respectively connected to the frame plate sliding connector 17 .

[0035] In this embodiment, the first support frame plate 15 and the second support frame plate 16 can be driven to move horizontally by the frame plate sliding connector 17, so as to facilitate subsequent mold opening and ejection.

[0036] The frame plate sliding connection 17 includes a first bottom side slide 18 and a second bottom side slide 19 arranged in the fixed lower mold 2. The first bottom side slide 18 is fixed to the first support frame plate 15 by bolts, and the second bottom side slide 19 is fixed to the second support frame plate 16 by bolts.

[0037] In this embodiment, when the first support frame plate 15 needs to be moved, the first bottom side slide bar 18 only needs to be moved; when the second support frame plate 16 needs to be moved, the second bottom side slide bar 19 only needs to be moved.

[0038] Combine Figure 2-3 As shown, an anti-deflection limiting track bar 20 is provided in the fixed lower mold 2, and the anti-deflection limiting track bar 20 is fixed to the fixed lower mold 2 by bolts. The anti-deflection limiting track bar 20 is located between the first bottom side slide bar 18 and the second bottom side slide bar 19 and slides with each other.

[0039] In this embodiment, during the movement of the first support frame plate 15 and the second support frame plate 16, the anti-deflection limiting track bar 20 can limit the movement of the first support frame plate 15 and the second support frame plate 16, thereby avoiding angular deviation between the first support frame plate 15 and the second support frame plate 16 during the movement and improving the accuracy of the displacement.

[0040] Combine Figure 1 、 Figure 2 As shown, the injection molding diverter 4 includes an injection molding main board 21 and an injection molding diverter plate 22 arranged above the fixed upper mold 1. The bottom of the injection molding diverter plate 22 is provided with four injection molding tubes 23 extending into the large-size molding inner cylinder 5.

[0041] In this embodiment, during the injection molding process, the molten material is injected into the injection molding main board 21, and the molten material is simultaneously fed into the four mold cavities through the injection molding diverter plate 22 and the injection molding tube 23 to form four beer barrel bottle blanks at one time.

[0042] The working principle of this utility model is:

[0043] During the injection molding process, the fixed upper mold 1 and the fixed lower mold 2 are close to each other, and the large-size molding inner cylinder 5, the clamping type threaded mouth molding part 6 and the top molding injection molding cylinder 7 are combined and coordinated to form a complete cavity for molding thick-walled and large-diameter beer barrel bottle blanks. The molten material is injected into the injection molding main board 21, and the molten material is synchronously fed into the four cavities through the injection molding diverter plate 22 and the injection molding tube 23 to mold four beer barrel bottle blanks at one time. The first threaded mouth molding splint 10 and the second threaded mouth molding splint 11 are tightly attached to each other, and the two thread grooves 122 form an annular thread groove. The thread structure of the beer barrel bottle blank can be synchronously molded during the injection molding process. After the injection molding is completed, the first threaded mouth molding splint 10 and the second threaded mouth molding splint 11 are separated from each other to avoid damaging the thread structure of the beer barrel bottle blank during the upper and lower demolding. When the threaded port molding splint 10 and the second threaded port molding splint 11 are tightly attached to each other, the outer wall of the sleeve joint 14 is snap-fitted with the inner wall of the fastening collar 13, and the fixation of the fastening collar 13 can prevent the first threaded port molding splint 10 and the second threaded port molding splint 11 from sliding horizontally during the injection molding process. After the first support frame plate 15 and the second support frame plate 16 are tightly attached, they fit the outer wall of the large-size molding inner cylinder 5. The bottom of the first support frame plate 15 and the second support frame plate 16 are against the fixed lower mold 2, and the top is against the bottom of the first threaded port molding splint 10 and the second threaded port molding splint 11, which can prevent the bottom of the first threaded port molding splint 10 and the second threaded port molding splint 11 from sinking, and prevent the first threaded port molding splint 10 and the second threaded port molding splint 11 from sliding up and down during the injection molding process.

[0044] When the first support frame plate 15 needs to be moved, the first bottom side slide bar 18 can be moved. When the second support frame plate 16 needs to be moved, the second bottom side slide bar 19 can be moved. During the movement of the first support frame plate 15 and the second support frame plate 16, the anti-deflection limiting track bar 20 can limit the movement of the first support frame plate 15 and the second support frame plate 16, thereby avoiding angular deviation of the first support frame plate 15 and the second support frame plate 16 during the movement, thereby improving the accuracy of displacement.

[0045] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described, or replace them with similar methods, without departing from the spirit of the present invention.

[0046] Although the terms such as fixed upper mold 1, fixed lower mold 2, large-size beer barrel blank forming structure 3, injection molding diverter 4, large-size molding inner cylinder 5, clamping type threaded port molding part 6, top molding injection molding cylinder 7, anti-sinking support part 8, fastening kit 9, first threaded port molding splint 10, second threaded port molding splint 11, semicircular cavity 12, thread groove 122, fastening collar 13, sleeve 14, first support frame plate 15, second support frame plate 16, frame plate sliding connector 17, first bottom side slide 18, second bottom side slide 19, anti-deflection limit track bar 20, injection molding main board 21, injection molding diverter plate 22, injection molding tube 23 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the utility model. Interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A large-space beer barrel preform injection mold, comprising a fixed upper mold (1) and a fixed lower mold (2), characterized in that: Four groups of large-sized beer barrel blank forming structures (3) are provided between the fixed upper mold (1) and the fixed lower mold (2); an injection diverter (4) connected to the large-sized beer barrel blank forming structure (3) is provided above the fixed upper mold (1); the large-sized beer barrel blank forming structure (3) comprises a large-sized forming inner cylinder (5), a clamping type threaded mouth forming part (6) and a top forming injection cylinder (7); the large-sized forming inner cylinder (5) passes through the clamping type threaded mouth forming part (6) and the top of the clamping type threaded mouth forming part (6) extends into the top forming injection cylinder (7); the top forming injection cylinder (7) is connected to the injection diverter (4); an anti-sinking support portion (8) is provided between the fixed lower mold (2) and the clamping type threaded mouth forming part (6); a fastening kit (9) for fixing the clamping type threaded mouth forming part (6) is provided between the top forming injection cylinder (7) and the clamping type threaded mouth forming part (6).

2. The large-space beer barrel preform injection mold according to claim 1 is characterized in that: The clamping type threaded mouth forming part (6) includes a first threaded mouth forming splint (10) and a second threaded mouth forming splint (11), and the first threaded mouth forming splint (10) and the second threaded mouth forming splint (11) both have a semicircular cavity (12), and the semicircular cavity (12) has a thread groove (122). When the first threaded mouth forming splint (10) and the second threaded mouth forming splint (11) are in close contact with each other, the two thread grooves (122) enclose an annular thread groove.

3. The large-space beer barrel preform injection mold according to claim 2 is characterized in that: The fastening kit (9) includes a fastening collar (13) arranged below the top molding injection cylinder (7), and the tops of the first threaded molding splint (10) and the second threaded molding splint (11) are both provided with a sleeve portion (14). When the first threaded molding splint (10) and the second threaded molding splint (11) are in close contact with each other, the outer wall of the sleeve portion (14) is snap-fitted with the inner wall of the fastening collar (13).

4. The large-space beer barrel preform injection mold according to claim 3 is characterized in that: The anti-sinking support portion (8) comprises a first support frame plate (15) and a second support frame plate (16) arranged on the fixed lower mold (2); the first support frame plate (15) and the second support frame plate (16) are tightly attached to each other and then fit against the outer wall of the large-sized forming inner cylinder (5).

5. The large-space beer barrel preform injection mold according to claim 4 is characterized in that: The bottoms of the first support frame plate (15) and the second support frame plate (16) are against the fixed lower mold (2), and the tops are against the bottoms of the first threaded port forming clamping plate (10) and the second threaded port forming clamping plate (11).

6. The large-space beer barrel preform injection mold according to claim 5, characterized in that: A frame plate sliding connector (17) capable of reciprocating linear motion in a horizontal direction is provided in the fixed lower mold (2), and the first supporting frame plate (15) and the second supporting frame plate (16) are respectively connected to the frame plate sliding connector (17).

7. The large-space beer barrel preform injection mold according to claim 6, characterized in that: The frame plate sliding connection member (17) includes a first bottom side slide (18) and a second bottom side slide (19) arranged in the fixed lower mold (2), the first bottom side slide (18) and the first support frame plate (15) are fixed by bolts, and the second bottom side slide (19) and the second support frame plate (16) are fixed by bolts.

8. The large-space beer barrel preform injection mold according to claim 7, characterized in that: An anti-deflection limiting track bar (20) is provided in the fixed lower mold (2), and the anti-deflection limiting track bar (20) is fixed to the fixed lower mold (2) by bolts. The anti-deflection limiting track bar (20) is located between the first bottom side slide bar (18) and the second bottom side slide bar (19) and is slidably matched with each other.

9. The large-space beer barrel preform injection mold according to claim 8, characterized in that: The injection molding diverter (4) comprises an injection molding main plate (21) and an injection molding diverter plate (22) arranged above the fixed upper mold (1).

10. The large-space beer barrel preform injection mold according to claim 9, characterized in that: The bottom of the injection molding diverter plate (22) is provided with four injection molding tubes (23) extending into the large-sized molding inner cylinder (5).

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