Sports water bottle cap injection mold servo motor thread core pulling mechanism

Abstract

The utility model provides a servo motor thread core-pulling mechanism for a sports water bottle bottle cap injection mold, which belongs to the field of mold technology. It includes an upper mold group and a lower mold group, two groups of bottle cap molding cavities are symmetrically arranged between the upper mold group and the lower mold group, and the two groups of bottle cap molding cavities are composed of six bottle cap molding cavities distributed in a straight line, and a rotary core-pulling type internal molding component is arranged in the lower mold group, and a drinking spout molding structure and an upper cover body mounting block molding structure are also arranged between the upper mold group and the lower mold group. Two groups of six bottle cap molding cavities in each group can injection mold twelve bottle cap products at one time, and the rotary core-pulling type internal molding component can mold an internal structure including an internal thread on the inner side of the bottle cap during the injection molding of the bottle cap, and can perform rotary core-pulling before the product is demoulded so that the internal thread of the bottle cap can be detached, without the need for post-processing, thereby improving the injection molding efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a servo motor thread core pulling mechanism for a sports water bottle cap injection mold. Background Art

[0002] The bottle cap of a sports water bottle is generally formed by injection molding. In the prior art, when the bottle cap is formed by injection molding, it is not possible to directly form an internal thread on the inner side of the bottle cap. Therefore, the internal thread needs to be formed on the inner side of the bottle cap through subsequent processing, which has low production efficiency.

[0003] For example, a Chinese patent discloses a one-mold multi-cavity mold for a plastic water bottle cap [application number: 202321583179.9], which includes a lower mold base and an upper mold base, wherein the side wall on the upper side of the lower mold base is symmetrically fixedly connected to two mold frames, and the side walls on the upper sides of the two mold frames are fixedly connected to the same lower mold plate, and the side wall on the lower side of the upper mold base is fixedly connected to the upper mold plate, and pouring holes are provided on the upper mold base and the upper mold plate, and a core plate is fixedly connected between the lower mold plate and the upper mold plate, and a plurality of cavity inserts are embedded in the side wall on the lower side of the upper mold plate, and a plurality of push tubes are movably sleeved in the lower mold plate and the core plate, and the plurality of push tubes are respectively located below the plurality of cavity inserts, and a mold core is sleeved in the push tube. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a servo motor thread core pulling mechanism for a sports bottle cap injection mould.

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

[0006] A servo motor threaded core-pulling mechanism for a sports water bottle bottle cap injection mold comprises an upper mold group and a lower mold group, two groups of bottle cap molding cavities are symmetrically arranged between the upper mold group and the lower mold group, the two groups of bottle cap molding cavities are composed of six bottle cap molding cavities distributed in a straight line, a rotary core-pulling type inner molding component is arranged in the lower mold group, and a drinking spout molding structure and an upper cover body mounting block molding structure are also arranged between the upper mold group and the lower mold group.

[0007] In the above-mentioned servo motor threaded core-pulling mechanism of the sports water bottle cap injection mold, the rotary core-pulling type inner molding component includes a cylindrical inner insert vertically arranged in the lower mold group and an annular outer insert sleeved on the cylindrical inner insert, the annular outer insert and the cylindrical inner insert are rotatably matched, the top ends of the annular outer insert and the cylindrical inner insert are inserted into the bottom of the bottle cap molding cavity, and the top of the outer circumferential surface of the annular outer insert is provided with an external thread.

[0008] In the above-mentioned servo motor thread core pulling mechanism of the sports water bottle cap injection mold, a sealing member is provided on the upper side of the connection between the annular outer insert and the cylindrical inner insert.

[0009] In the above-mentioned servo motor thread core pulling mechanism of the sports water bottle cap injection mold, a rotating component connected to the annular outer insert is also provided in the lower mold assembly.

[0010] In the above-mentioned sports water bottle cap injection mold servo motor threaded core pulling mechanism, the rotating component includes a No. 1 gear arranged on an annular outer insert, the No. 1 gears on two adjacent annular outer inserts transmit power through a No. 2 gear, the No. 2 gear is meshed with the No. 1 gear, and the lower mold assembly is also provided with a power seat, and the power seat is provided with a power gear driven by a servo motor, and the power gear transmits power to the No. 1 gear through a number of No. 3 gears.

[0011] In the above-mentioned servo motor thread core pulling mechanism of the sports water bottle cap injection mold, a plurality of bearings are arranged between the annular outer insert and the lower mold assembly.

[0012] In the above-mentioned sports water bottle bottle cap injection mold servo motor threaded core pulling mechanism, the drinking spout molding structure includes a drinking spout molding hole arranged in the upper mold group and a lower drinking spout molding rod protruding from the top of the cylindrical inner insert, the lower drinking spout molding rod is inserted into the drinking spout molding hole and there is a gap between the outer circumferential surface of the lower drinking spout molding rod and the inner wall of the drinking spout molding hole, an upper drinking spout molding rod is also provided at the top of the drinking spout molding hole, the bottom end of the upper drinking spout molding rod and the top end of the lower drinking spout molding rod are against each other, and the bottom of the upper drinking spout molding rod has an expanded diameter section, and the outer diameter of the expanded diameter section gradually increases from bottom to top.

[0013] In the above-mentioned sports water bottle cap injection mold servo motor thread core pulling mechanism, the upper cover body mounting block molding structure includes an upper cover body mounting block molding groove arranged in the upper mold assembly and an upper cover body mounting block molding block protruding from the top of the cylindrical inner insert, and an upper cover body mounting block molding cavity is provided between the upper cover body mounting block molding groove and the upper cover body mounting block molding block.

[0014] In the above-mentioned sports water bottle bottle cap injection mold servo motor threaded core pulling mechanism, the upper mold group is also provided with a core rod horizontally inserted into the molding groove of the upper cover body mounting block and a side core pulling assembly connected to the core rod, the core rod horizontally penetrates both sides of the molding groove of the upper cover body mounting block and the core rod is located on the upper side of the molding block of the upper cover body mounting block.

[0015] In the above-mentioned servo motor threaded core pulling mechanism of the sports water bottle cap injection mold, the side core pulling assembly includes a core pulling seat that slides with the upper mold group, the outer end of the core rod is connected to the core pulling seat and three core rods are fixed on the core pulling seat, a top plate is provided on the top of the upper mold group, a driving rod is obliquely fixed on the top plate, and the driving rod is inserted into the core pulling seat and slides with the core pulling seat.

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

[0017] 1. Two groups of six bottle cap molding cavities each can form twelve bottle cap products at one time. The rotary core-pulling inner molding component can form the internal structure including the inner thread on the inner side of the bottle cap during the injection molding of the bottle cap, and can perform rotary core-pulling before the product is demoulded so that the inner thread of the bottle cap can be detached, without the need for post-processing, thereby improving the injection molding efficiency.

[0018] 2. The external thread set on the top of the annular outer insert can form an internal thread on the inner side of the bottle cap during the injection molding of the bottle cap. When the annular outer insert that rotates with the cylindrical inner insert rotates, the external thread can be rotated and disengaged from the internal thread on the bottle cap, thereby realizing the integral injection molding of the bottle cap and the internal thread without the need for post-processing, which can effectively improve the injection molding efficiency.

[0019] 3. The servo motor can drive the power gear to rotate. The rotation of the power gear can drive the No. 3 gear to rotate and drive the No. 1 gear meshing with the No. 3 gear to rotate. The rotation of the No. 1 gear meshing with the No. 3 gear can drive the remaining No. 1 gears to rotate through the No. 2 gear. The rotation of the No. 1 gear can drive the annular outer insert to rotate. During demoulding, after the bottle cap on the lower mold is limited by the external bottle cap fixing plate, the rotation of the annular outer insert can disengage the internal thread of the bottle cap from the external thread on the annular outer insert.

[0020] Other advantages, objectives and features of the present invention will be embodied 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

[0021] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0022] Figure 2 It is a cross-sectional view of the utility model;

[0023] Figure 3 It is a schematic diagram of the internal structure of the upper module;

[0024] Figure 4 This is a schematic diagram of the internal structure of the lower module.

[0025] In the figure, the upper mold group 1, the lower mold group 2, the bottle cap molding cavity 3, the rotary core-pulling type inner molding component 4, the cylindrical inner insert 5, the annular outer insert 6, the external thread 7, the seal 8, the No. 1 gear 9, the No. 2 gear 10, the power seat 11, the power gear 12, the No. 3 gear 13, the bearing 14, the drinking spout molding hole 15, the lower drinking spout molding rod 16, the upper drinking spout molding rod 17, the expanded diameter section 18, the upper cover body mounting block molding groove 19, the upper cover body mounting block molding block 20, the core rod 21, the core-pulling seat 22, the top plate 23, and the driving rod 24. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 4 As shown, a servo motor threaded core-pulling mechanism of a sports water bottle bottle cap injection mold comprises an upper mold group 1 and a lower mold group 2, two groups of bottle cap molding cavities 3 are symmetrically arranged between the upper mold group 1 and the lower mold group 2, and the two groups of bottle cap molding cavities 3 are composed of six bottle cap molding cavities 3 distributed in a straight line, a rotary core-pulling type inner molding component 4 is arranged in the lower mold group 2, and a drinking spout molding structure and an upper cover body mounting block molding structure are also arranged between the upper mold group 1 and the lower mold group 2.

[0027] In the utility model, two groups of six bottle cap molding cavities 3 in each group can injection mold twelve bottle cap products at one time, the rotary core-pulling inner molding component 4 can mold an internal structure including an internal thread on the inner side of the bottle cap during the injection molding of the bottle cap, and can perform rotary core-pulling before the product is demoulded so that the internal thread part of the bottle cap can be detached, without the need for post-processing, thereby improving the injection molding efficiency, the drinking spout molding structure can directly mold a drinking spout on the bottle cap during the injection molding, and the upper cover body mounting block molding structure can directly mold an upper cover body mounting block for rotating the upper cover body on the bottle cap during the injection molding, and the upper cover body can be used to cover the drinking spout.

[0028] Specifically, the rotary core-pulling inner molding component 4 includes a cylindrical inner insert 5 vertically arranged in the lower mold 2 and an annular outer insert 6 sleeved on the cylindrical inner insert 5, the annular outer insert 6 and the cylindrical inner insert 5 are rotationally matched, the top ends of the annular outer insert 6 and the cylindrical inner insert 5 are inserted into the bottom of the bottle cap molding cavity 3, and the top of the outer circumferential surface of the annular outer insert 6 is provided with an external thread 7. The external thread 7 provided on the top of the annular outer insert 6 can form an internal thread on the inner side of the bottle cap during the injection molding of the bottle cap, and the annular outer insert 6 that is rotationally matched with the cylindrical inner insert 5 can rotate when the external thread 7 is rotated and disengaged from the internal thread on the bottle cap, thereby realizing the integral injection molding of the bottle cap and the internal thread, without the need for post-processing, and effectively improving the injection molding efficiency.

[0029] Preferably, a sealing member 8 is provided on the upper side of the connection between the annular outer insert 6 and the cylindrical inner insert 5. The sealing member can improve the sealing performance of the connection between the annular outer insert 6 and the cylindrical inner insert 5.

[0030] Specifically, the lower mold 2 is further provided with a rotating assembly connected to the annular outer insert 6, the rotating assembly includes a No. 1 gear 9 arranged on the annular outer insert 6, the No. 1 gears 9 on two adjacent annular outer inserts 6 are powered by the No. 2 gear 10, the No. 2 gear 10 is meshed with the No. 1 gear 9, the lower mold 2 is further provided with a power seat 11, the power seat 11 is provided with a power gear 12 driven by a servo motor, the power gear 12 is powered by the No. 1 gear 9 through a plurality of No. 3 gears 13. The servo motor can drive the power gear 12 to rotate, the power gear 12 can drive the No. 3 gear 13 to rotate and drive the No. 1 gear meshed with the No. 3 gear to rotate through the No. 3 gear, the No. 1 gear meshed with the No. 3 gear to rotate can drive the remaining No. 1 gears to rotate through the No. 2 gear, the No. 1 gear can drive the annular outer insert to rotate, during demoulding, after the bottle cap on the lower mold is limited by the external bottle cap fixing plate, the annular outer insert can rotate to disengage the internal thread of the bottle cap from the external thread on the annular outer insert.

[0031] Preferably, a plurality of bearings 14 are provided between the annular outer insert 6 and the lower die set 2. The provision of the bearings can reduce the friction resistance between the annular outer insert and the lower die set.

[0032] Specifically, the drinking spout forming structure includes a drinking spout forming hole 15 provided in the upper mold assembly 1 and a lower drinking spout forming rod 16 protruding from the top of the cylindrical inner insert 5, wherein the lower drinking spout forming rod 16 is inserted into the drinking spout forming hole 15 and there is a gap between the outer circumferential surface of the lower drinking spout forming rod 16 and the inner wall of the drinking spout forming hole 15, and an upper drinking spout forming rod 17 is also provided at the top of the drinking spout forming hole 15, wherein the bottom end of the upper drinking spout forming rod 17 abuts against the top end of the lower drinking spout forming rod 16, and the bottom of the upper drinking spout forming rod 17 has an enlarged diameter section 18, and the outer diameter of the enlarged diameter section 18 gradually increases from bottom to top. The gap between the outer circumferential surface of the lower drinking spout forming rod 16 and the inner wall of the drinking spout forming hole 15 can form a water spray nozzle with a circular cross section at the top of the bottle cap, and the enlarged diameter section at the bottom of the upper drinking spout forming rod 17 can gradually increase the inner diameter of the top opening of the water spray nozzle from bottom to top.

[0033] Specifically, the upper cover body mounting block forming structure includes an upper cover body mounting block forming groove 19 provided in the upper mold assembly 1 and an upper cover body mounting block forming block 20 protruding from the top of the cylindrical inner insert 5, and an upper cover body mounting block forming cavity is provided between the upper cover body mounting block forming groove 19 and the upper cover body mounting block forming block 20. The upper cover body mounting block forming cavity can form an upper cover body mounting block for rotating the upper cover body at the top of the bottle cap; the upper mold assembly 1 is also provided with a core rod 21 horizontally inserted into the upper cover body mounting block forming groove 19 and a side core pulling assembly connected to the core rod 21, the core rod 21 horizontally passes through both sides of the upper cover body mounting block forming groove 19 and the core rod 21 is located on the upper side of the upper cover body mounting block forming block 20. The core rod 21 is horizontally inserted into the molding groove 19 of the upper cover body mounting block to form a horizontally arranged upper cover body connecting shaft mounting hole on the upper cover body mounting block of the bottle cap. After the product is injection molded, the core rod can be driven to move horizontally outward through the side core pulling assembly to separate the core rod and the product.

[0034] Specifically, the side core pulling assembly includes a core pulling seat 22 that is slidably matched with the upper mold assembly 1, the outer end of the core rod 21 is connected to the core pulling seat 22, and three core rods 21 are fixed on the core pulling seat 22. A top plate 23 is provided on the top of the upper mold assembly 1, and a driving rod 24 is obliquely fixed on the top plate 23. The driving rod 24 is inserted into the core pulling seat 22 and slidably matched with the core pulling seat 22. When the top plate moves upward, it can drive the driving rod to move vertically upward. The vertical upward movement of the driving rod can drive the core pulling seat to move horizontally away from the molding cavity, thereby driving the core rod to move horizontally outward to separate the core rod from the product.

[0035] The working principle of the utility model is as follows: two groups of six bottle cap molding cavities 3 in each group can form twelve bottle cap products at one time, the rotary core-pulling inner molding component 4 can form an internal structure including an internal thread on the inner side of the bottle cap during the injection molding of the bottle cap, and can perform a rotary core-pulling before the product is demoulded so that the internal thread of the bottle cap can be detached, the drinking spout molding structure can directly form a drinking spout on the bottle cap during the injection molding, and the upper cover body mounting block molding structure can directly form an upper cover body mounting block for rotating the upper cover body on the bottle cap during the injection molding, and the upper cover body can be used to cover the drinking spout;

[0036] The external thread 7 arranged on the top of the annular outer insert 6 can form an internal thread on the inner side of the bottle cap during the injection molding of the bottle cap. When the annular outer insert 6 that is rotatably matched with the cylindrical inner insert 5 rotates, the external thread 7 can be rotated and disengaged from the internal thread on the bottle cap, thereby realizing the integral injection molding of the bottle cap and the internal thread, without the need for post-processing, and effectively improving the injection molding efficiency. The servo motor can drive the power gear 12 to rotate. The rotation of the power gear 12 can drive the No. 3 gear 13 to rotate and drive the No. 1 gear meshing with the No. 3 gear to rotate through the No. 3 gear. The rotation of the No. 1 gear meshing with the No. 3 gear can drive the remaining No. 1 gears to rotate through the No. 2 gear. The rotation of the No. 1 gear can drive the annular outer insert to rotate. During demoulding, after the bottle cap on the lower mold set is limited by the external bottle cap fixing plate, the rotation of the annular outer insert can cause the internal thread of the bottle cap to disengage from the external thread on the annular outer insert.

[0037] The gap between the outer circumferential surface of the lower drinking nozzle forming rod 16 and the inner wall of the drinking nozzle forming hole 15 can form a water nozzle with a ring-shaped cross-section at the top of the bottle cap. The expanded diameter section at the bottom of the upper drinking nozzle forming rod 17 can make the inner diameter of the top opening of the water nozzle gradually increase from bottom to top. The upper cover body mounting block molding cavity can form an upper cover body mounting block for rotating the upper cover body at the top of the bottle cap. The core rod 21 is horizontally inserted into the upper cover body mounting block molding groove 19 to form a horizontally arranged upper cover body connecting shaft mounting hole on the upper cover body mounting block of the bottle cap. After the product is injection molded, the core rod can be driven to move horizontally outward through the side core pulling assembly to separate the core rod and the product. When the top plate moves upward, it can drive the driving rod to move vertically upward. The vertical upward movement of the driving rod can drive the core pulling seat to move horizontally away from the molding cavity, thereby driving the core rod to move horizontally outward to separate the core rod and the product.

[0038] 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 in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0039] Although this article uses the upper mold group 1, the lower mold group 2, the bottle cap molding cavity 3, the rotary core-pulling inner molding component 4, the cylindrical inner insert 5, the annular outer insert 6, the external thread 7, the seal 8, the first gear 9, the second gear 10, the power seat 11, the power gear 12, the third gear 13, the bearing 14, the drinking spout molding hole 15, the lower drinking spout molding rod 16, the upper drinking spout molding rod 17, the expanded diameter section 18, the upper cover body mounting block molding groove 19, the upper cover body mounting block molding block 20, the core rod 21, the core-pulling seat 22, the top plate 23, the driving rod 24, etc. more frequently, these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A servo motor thread core pulling mechanism for a sports bottle cap injection mold, comprising an upper mold assembly (1) and a lower mold assembly (2), characterized in that: Two groups of bottle cap molding cavities (3) are symmetrically arranged between the upper mold group (1) and the lower mold group (2), and the two groups of bottle cap molding cavities (3) each consist of six bottle cap molding cavities (3) distributed in a straight line. A rotating core-pulling type inner molding component (4) is arranged in the lower mold group (2), and a drinking spout molding structure and an upper cover body mounting block molding structure are also arranged between the upper mold group (1) and the lower mold group (2).

2. The servo motor thread core pulling mechanism for the sports water bottle cap injection mold according to claim 1, characterized in that: The rotary core-pulling inner molding component (4) comprises a cylindrical inner insert (5) vertically arranged in the lower mold assembly (2) and an annular outer insert (6) sleeved on the cylindrical inner insert (5), the annular outer insert (6) and the cylindrical inner insert (5) are rotatably matched, the top ends of the annular outer insert (6) and the cylindrical inner insert (5) are both inserted into the bottom of the bottle cap molding cavity (3), and the top of the outer circumferential surface of the annular outer insert (6) is provided with an external thread (7).

3. The servo motor thread core pulling mechanism of the sports water bottle cap injection mold according to claim 2, characterized in that: A sealing member (8) is provided on the upper side of the connection between the annular outer insert (6) and the cylindrical inner insert (5).

4. The servo motor thread core pulling mechanism for the sports water bottle cap injection mold according to claim 3, characterized in that: The lower die set (2) is also provided with a rotating assembly connected to the annular outer insert (6).

5. The servo motor thread core pulling mechanism for the sports water bottle cap injection mold according to claim 4, characterized in that: The rotating assembly comprises a first gear (9) arranged on an annular outer insert (6), the first gears (9) on two adjacent annular outer inserts (6) transmit power through a second gear (10), the second gear (10) meshes with the first gear (9), the lower die set (2) is also provided with a power seat (11), the power seat (11) is provided with a power gear (12) driven by a servo motor, and the power gear (12) transmits power to the first gear (9) through a plurality of third gears (13).

6. The servo motor thread core pulling mechanism of the sports water bottle cap injection mold according to claim 2, characterized in that: A plurality of bearings (14) are arranged between the annular outer insert (6) and the lower die set (2).

7. The servo motor thread core pulling mechanism for the sports water bottle cap injection mold according to claim 2, characterized in that: The drinking spout forming structure comprises a drinking spout forming hole (15) arranged in the upper mold group (1) and a lower drinking spout forming rod (16) protruding from the top of the cylindrical inner insert (5); the lower drinking spout forming rod (16) is inserted into the drinking spout forming hole (15) and a gap is provided between the outer circumferential surface of the lower drinking spout forming rod (16) and the inner wall of the drinking spout forming hole (15); an upper drinking spout forming rod (17) is further provided at the top of the drinking spout forming hole (15); the bottom end of the upper drinking spout forming rod (17) abuts against the top end of the lower drinking spout forming rod (16); the bottom of the upper drinking spout forming rod (17) has an expanded diameter section (18), and the outer diameter of the expanded diameter section (18) gradually increases from bottom to top.

8. The servo motor thread core pulling mechanism for the sports water bottle cap injection mold according to claim 7, characterized in that: The upper cover body mounting block forming structure comprises an upper cover body mounting block forming groove (19) arranged in the upper mold assembly (1) and an upper cover body mounting block forming block (20) protruding from the top of the cylindrical inner insert (5), and an upper cover body mounting block forming cavity is provided between the upper cover body mounting block forming groove (19) and the upper cover body mounting block forming block (20).

9. The servo motor thread core pulling mechanism for the sports water bottle cap injection mold according to claim 8, characterized in that: The upper mold assembly (1) is also provided with a core rod (21) horizontally inserted into the upper cover body mounting block forming groove (19) and a side core pulling assembly connected to the core rod (21); the core rod (21) horizontally penetrates both sides of the upper cover body mounting block forming groove (19) and the core rod (21) is located on the upper side of the upper cover body mounting block forming block (20).

10. The servo motor thread core pulling mechanism of the sports water bottle cap injection mold according to claim 9, characterized in that: The side core pulling assembly includes a core pulling seat (22) that is slidably matched with the upper mold assembly (1), the outer end of the core rod (21) is connected to the core pulling seat (22) and three core rods (21) are fixed on the core pulling seat (22), a top plate (23) is arranged on the top of the upper mold assembly (1), a driving rod (24) is obliquely fixed on the top plate (23), and the driving rod (24) is inserted into the core pulling seat (22) and slidably matched with the core pulling seat (22).

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