Bottle cap mold
By introducing a forced return component into the bottle cap mold, the problem of insufficient return accuracy of the threaded core was solved, achieving precise return of the threaded core, improving the quality of bottle cap molding and reducing wear on mold components.
Patent Information
- Application Number
- CN202520391995.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-07
AI Technical Summary
In bottle cap molds, the poor return accuracy of the threaded core causes it to collide with the lower mold during mold closing, affecting the quality of bottle cap molding. Furthermore, excessive spring force can lead to wear on mold components.
A forced return assembly is set between the threaded core and the anti-theft ring core, including a base, an elastic element and a top ball assembly. The threaded core is accurately returned to its original position by the compression and restoring force of the elastic element, and the forced return is achieved by the top ball assembly sliding into the ball socket.
It improves the return accuracy of the threaded core, avoids wear on mold components, and ensures the normal forming quality of the bottle cap.
Smart Images
Figure CN223948352U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a mould technical field especially relates to a bottle cap mould. BACKGROUND
[0002] In the bottle cap mould, the spring is installed between the threaded core fixing rod and the anti-theft ring core fixing rod. When the bottle cap mould is demoulded, the demoulding sleeve of the bottle cap mould is forced to reset by the piston rod connected from the outside, and the threaded core is reset upward (i.e. returns to the initial position when the bottle cap mould is closed) by the elastic force of the spring, so as to perform the next time closing.
[0003] In the production process of the bottle cap, when the threaded core is reset upward by the elastic force of the spring after demoulding, the rebound is often not completely in place, resulting in poor reset accuracy of the threaded core. Because the gap between the upper die and the lower die is very small, the threaded core that is not completely reset will collide with the bottom plate of the lower die when the die is closed, affecting the normal extrusion forming of the bottle cap. And limited by the use environment, the elastic force of the spring cannot be too large, otherwise the threaded core will violently collide with the gasket and the head of the anti-theft ring core in the bottle cap mould when resetting, which is easy to cause wear of the anti-theft ring core and the gasket, the distance between the head of the threaded core and the anti-theft ring core changes, and the normal forming of the fin of the bottle cap is affected. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at providing a bottle cap mould to improve the reset accuracy of the threaded core after the upper die and the lower die are demoulded.
[0005] To achieve this purpose, the utility model adopts the following technical scheme:
[0006] The bottle cap mould comprises an upper die and a lower die, the upper die comprises a threaded core, an anti-theft ring core and an anti-theft ring core fixing rod, the threaded core is away from the initial position when the upper die and the lower die are demoulded, a spherical recess is formed in the circumferential side surface of the threaded core, the anti-theft ring core is provided with a first hole in the radial direction, and the anti-theft ring core fixing rod is provided with a second hole coaxially communicated with the first hole in the radial direction; the bottle cap mould further comprises a forced reset assembly, and the forced reset assembly comprises:
[0007] A base is arranged on the anti-theft ring core fixing rod.
[0008] An elastic member is arranged in the first hole and the second hole.
[0009] A top bead assembly is arranged between the base and the top bead assembly, and the top bead assembly is configured to compress the elastic member and slide out of the spherical recess when the threaded core is away from the initial position, or slide into the spherical recess and abut against the spherical recess when the threaded core returns to the initial position.
[0010] As an alternative to the bottle cap mold, the top bead assembly comprises:
[0011] A retainer, one end of the elastic member abutting against the retainer away from one end of the threaded core;
[0012] A top bead, provided on the other end of the retainer towards the threaded core, the top bead can compress the elastic member and slide out of the ball socket or slide into and abut against the ball socket under the action of the elastic member.
[0013] As an alternative to the bottle cap mold, a receiving groove is formed on the other end of the retainer towards the threaded core, and the top bead is rollingly arranged in the receiving groove and protrudes from the retainer.
[0014] As an alternative to the bottle cap mold, a liquid storage groove is formed in the retainer, and the liquid storage groove is used for storing lubricating oil and is in communication with the receiving groove.
[0015] As an alternative to the bottle cap mold, a first limiting groove is formed on the end of the retainer away from the threaded core, and one end of the elastic member is arranged in the first limiting groove.
[0016] As an alternative to the bottle cap mold, the base comprises:
[0017] A main body seat, an installation groove is formed on the circumferential side of the anti-theft ring core fixing rod, the installation groove is in communication with the second hole, and the main body seat is arranged in the installation groove;
[0018] A boss, the boss is integrally arranged in the main body seat and extends into the second hole, and one end of the elastic member away from the top bead assembly abuts against the boss.
[0019] As an alternative to the bottle cap mold, the boss is provided with a second limiting groove, and the other end of the elastic member away from the top bead assembly is arranged in the second limiting groove.
[0020] As an alternative to the bottle cap mold, the main body seat is locked in the installation groove through a fastener.
[0021] As an alternative to the bottle cap mold, the distance between the end of the main body seat away from the boss and the inner bottom wall of the installation groove is less than the groove depth of the installation groove.
[0022] As an alternative to the bottle cap mold, the bottle cap mold is provided with at least two forced return assemblies which are equally spaced in the circumferential direction.
[0023] The beneficial effects of the utility model are:
[0024] The bottle cap mold provided by the utility model, when the upper die and the lower die are demolded, the threaded core leaves the initial position and extrudes the top bead assembly, so that the top bead assembly compresses the elastic piece and slides out of the ball socket. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 is the sectional view of the bottle cap mold when the utility model embodiment provides clamping;
[0026] Figure 2 is the sectional view of the bottle cap mold when the utility model embodiment provides demolding;
[0027] Figure 3 is the partial structure sectional view of the bottle cap mold when the utility model embodiment provides clamping;
[0028] Figure 4 is Figure 1 is the partial structure enlarged view of A in the middle.
[0029] The component names and labels in the drawing are as follows:
[0030] 100, bottle cap; 101, wing piece;
[0031] 1, threaded core; 10, ball socket; 2, anti-theft ring core; 21, first hole; 3, anti-theft ring core fixing rod; 31, second hole; 32, mounting groove; 4, threaded core fixing rod; 5, core rod; 6, demolding sleeve; 7, spring; 8, gasket; 9, lower die; 91, lower die cavity; 92, bottom plate;
[0032] 11, base; 111, main body seat; 112, boss; 12, elastic piece; 13, top bead assembly; 131, retainer; 1311, containing groove; 132, top bead. DETAILED DESCRIPTION
[0033] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the utility model is further illustrated below by combining with the drawings and through specific implementation manners. It can be understood that the specific embodiments described here are only used for explaining the utility model, not limiting the utility model. In addition, it needs to be explained that, in order to facilitate the description, only the parts related to the utility model are shown in the drawings, not all.
[0034] In the description of the utility model, unless another definite provision and limitation, the term "link", "connect", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can pass through the indirect connection of intermediate medium, can be two element internal communication or two element mutual action relation.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.
[0035] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the direct contact of the first and second features, also can include the contact of the first and second features not direct contact but through the contact between other features between them.Moreover, the first feature "on", "above" and "on" the second feature includes the first feature directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature.The first feature "under", "below" and "under" the second feature includes the first feature directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.
[0036] In the description of the embodiment, the orientation or position relationship of the terms "on", "under", "right", "left" and the like is based on the orientation or position relationship shown in the drawing, only for the convenience of description and simplification operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.
[0037] The technical scheme of the utility model is further illustrated by specific embodiments in combination with the drawings.
[0038] As Figure 1 And Figure 2As shown, the present embodiment proposes a bottle cap mold, which comprises an upper mold and a lower mold 9. The upper mold comprises a thread core 1, a theft-proof ring core 2, a theft-proof ring core fixing rod 3, a thread core fixing rod 4, a core rod 5, a demolding sleeve 6, a spring 7 and a gasket 8. Among them, the thread core 1 is sleeved on the core rod 5, and the thread core fixing rod 4 is sleeved on the thread core 1 and is threadedly connected with the thread core 1. The theft-proof ring core 2 is sleeved on the thread core 1, and the gasket 8 is installed between the theft-proof ring core 2 and the thread core 1. The theft-proof ring core fixing rod 3 is fixedly connected with the theft-proof ring core 2 through screws and pins. The demolding sleeve 6 is sleeved on the theft-proof ring core 2. The spring 7 is installed between the thread core fixing rod 4 and the theft-proof ring core fixing rod 3. The lower mold 9 comprises a lower mold cavity 91 and a bottom plate 92. The lower mold cavity 91 is arranged on the bottom plate 92 to form the lower mold 9. Since the bottle cap mold is prior art, the specific structure of the bottle cap mold will not be described here.
[0039] When the bottle cap mold is closed, as shown in Figure 1 , the material pill enters the lower mold cavity 91, and the upper mold and the lower mold 9 are pressed tightly and extrude the material pill to form a bottle cap 100 with a required shape. When the bottle cap mold is demolded, as shown in Figure 2 , first, the upper mold is separated from the lower mold 9, and the bottle cap 100 remains in the upper mold. Then, the demolding sleeve 6 pushes the bottle cap 100 from top to bottom along the up-down direction in the figure. In the initial stage of pushing the bottle cap 100 downward, the inside of the bottle cap 100 is tightly attached to the core rod 5, so there is no deformation space, and the bottle cap 100 moves downward, which drives the thread core 1 to move downward, so that the thread core fixing rod 4 moves downward synchronously with the thread core 1 and compresses the spring 7. As the inside of the bottle cap 100 completely separates from the core rod 5, the reverse buckle structure on the inside of the bottle cap 100 has a deformation space and deforms under the action of the demolding force, and finally the bottle cap 100 separates from the upper mold. After the bottle cap 100 is completely demolded, the demolding sleeve 6 is forced to return to the original position by the piston rod (not shown in the figure) connected from the outside, and the thread core 1 returns to the original position by the elastic restoring force of the spring 7 to realize the return. When the material pill falls into the lower mold cavity 91 again, the upper mold and the lower mold 9 are closed again to process and form the bottle cap 100.
[0040] In the production process of the bottle cap 100, when the thread core 1 returns to the original position upward after demolding under the elastic force of the spring 7, the return accuracy of the thread core 1 is poor due to the incomplete return. Since the gap between the upper mold and the lower mold 9 is very small, the thread core 1 that is not completely returned will collide with the bottom plate 92 of the lower mold 9 when the mold is closed, which affects the normal extrusion forming of the bottle cap 100. However, due to the limitation of the use environment, the elastic force of the spring 7 cannot be too large, otherwise the thread core 1 will collide violently with the gasket 8 and the head of the theft-proof ring core 2 in the bottle cap mold when it returns, which is easy to cause wear of the theft-proof ring core 2 and the gasket 8, and the distance between the head of the thread core 1 and the theft-proof ring core 2 changes, which affects the normal forming of the wing 101 of the bottle cap 100.
[0041] To solve the above problems, as shown in Figure 3 and Figure 4 , the threaded core 1 leaves the initial position when the upper die and the lower die 9 are demolded. The threaded core 1 is provided with a spherical hole 10 on the circumferential side, the anti-theft ring core 2 is provided with a first hole 21 in the radial direction, and the anti-theft ring core fixing rod 3 is provided with a second hole 31 coaxially communicated with the first hole 21. The bottle cap mold further comprises a forced return assembly, which comprises a base 11, an elastic member 12 and a top bead assembly 13, and the base 11 is arranged on the anti-theft ring core fixing rod 3. The elastic member 12 is arranged through the first hole 21 and the second hole 31. The elastic member 12 is compressed and arranged between the base 11 and the top bead assembly 13, and the top bead assembly 13 compresses the elastic member 12 and slides out of the spherical hole 10 after the threaded core 1 leaves the initial position; or, the top bead assembly 13 slides into and abuts against the spherical hole 10 when the threaded core 1 returns to the initial position. When the upper die and the lower die 9 are demolded, the threaded core 1 leaves the initial position and extrudes the top bead assembly 13, so that the top bead assembly 13 compresses the elastic member 12 and slides out of the spherical hole 10. When the upper die and the lower die 9 are completely demolded, the threaded core 1 returns to the initial position, and the top bead assembly 13 slides into and abuts against the spherical hole 10 under the action of the elastic member 12, so as to push the threaded core 1 which is not completely returned to accurately return and stop at the initial position, thereby realizing the forced return effect of the threaded core 1 and improving the return accuracy of the threaded core 1 after the upper die and the lower die 9 are demolded, so as to ensure the quality of the bottle cap 100 processed by the bottle cap mold.
[0042] It should be noted that when the bottle cap mold is closed, the threaded core 1 is located at the initial position, and at this time the top bead assembly 13 is tightly clamped in the spherical hole 10 under the action of the elastic member 12. When the bottle cap mold is demolded, the threaded core 1 leaves the initial position from top to bottom and extrudes the top bead assembly 13 out of the spherical hole 10, and the top bead assembly 13 compresses the elastic member 12 and relatively slides along the outer circumferential surface of the threaded core 1. As shown in Figure 3 , when the bottle cap 100 is demolded, the threaded core 1 moves towards the initial position under the action of the spring 7, and the threaded core 1 may not be completely returned, i.e. the threaded core 1 does not completely return to the initial position (at this time the actual position of the threaded core 1 is slightly different from the initial position), and the top bead assembly 13 is located at the edge of the spherical hole 10 (or not completely slides into the spherical hole 10). Under the guidance of the inner side surface of the spherical hole 10, the top bead assembly 13 completely slides into the spherical hole 10 and pushes the threaded core 1 to continue moving from bottom to top to the initial position, thereby realizing the forced return of the threaded core 1.
[0043] As shown in Figure 3 and Figure 4As shown, the top bead assembly 13 includes a holder 131 and a top bead 132, one end of the elastic member 12 abuts against the holder 131 away from one end of the threaded core 1. The top bead 132 is arranged at the other end of the holder 131 towards the threaded core 1, and the top bead 132 can compress the elastic member 12 and slide out of the ball socket 10 or slide into and abut against the ball socket 10 under the action of the elastic member 12. By arranging the holder 131, the stable connection of the holder 131 and the elastic member 12 is facilitated. At the same time, the top bead 132 is a ball body matched with the ball socket 10, so that the top bead 132 can smoothly slide into or out of the ball socket 10, avoiding jamming. The above-mentioned elastic member 12 can be a spring member, a compression spring or the like, which is not limited here.
[0044] Further, the other end of the holder 131 towards the threaded core 1 is provided with a containing groove 1311, and the top bead 132 is arranged in the containing groove 1311 and protrudes from the holder 131. Since the top bead 132 is arranged in the containing groove 1311 of the holder 131, the top bead 132 can rotate in the containing groove 1311 when sliding into or out of the ball socket 10, that is, the containing groove 1311 and the ball socket 10 are in rolling friction, reducing the friction between the top bead 132 and the threaded core 1, and reducing the wear of the threaded core 1 and the top bead 132.
[0045] Further, the holder 131 is provided with a liquid storage groove (not shown in the figure), which is used for storing lubricating oil and is in communication with the containing groove 1311. Through the above arrangement, the lubricating oil in the liquid storage groove can enter the containing groove 1311 to lubricate the top bead 132, so that the top bead 132 can smoothly roll in the holder 131, further reducing the wear of the holder 131 and the top bead 132, and improving the protection of the top bead 132.
[0046] In the embodiment, the one end of the holder 131 away from the threaded core 1 is provided with a first limiting groove (not shown in the figure), and the one end of the elastic member 12 is arranged in the first limiting groove. By arranging the first limiting groove, the limiting installation of the elastic member 12 is realized, and the stability of the installation of the elastic member 12 is improved.
[0047] As shown in Figure 3 and Figure 4 As shown, the base 11 includes a main body seat 111 and a boss 112, and the circumferential side of the anti-theft ring core fixing rod 3 is provided with an installation groove 32 in communication with the second hole 31, and the main body seat 111 is arranged in the installation groove 32. The boss 112 is integrally arranged in the main body seat 111 and extends into the second hole 31, and the one end of the elastic member 12 away from the top bead assembly 13 abuts against the boss 112. Through the cooperation of the boss 112 and the second hole 31, the positioning installation of the base 11 is realized, so as to ensure that the base 11 is quickly installed on the anti-theft ring core fixing rod 3.
[0048] Further, the boss 112 is provided with a second limiting groove (not shown in the figure), and the other end of the elastic member 12 away from the top bead assembly 13 is arranged in the second limiting groove. One end of the elastic member 12 is arranged in the first limiting groove, and the other end of the elastic member 12 is arranged in the second limiting groove, so that the elastic member 12 is limited and installed, and the stability of the installation of the elastic member 12 is improved.
[0049] Specifically, the main body seat 111 is locked in the installation groove 32 by a fastener. The fastener is a screw, the anti-theft ring type core fixing rod 3 is provided with an installation hole in the radial direction, the installation hole is communicated with the installation groove 32, and the screw is screwed with the installation hole after passing through the main body seat 111, so that the main body seat 111 is locked in the installation groove 32, and the stability of the installation of the base 11 is improved.
[0050] It should be noted that the distance h between the other end of the main body seat 111 away from the boss 112 and the inner bottom wall of the installation groove 32 is less than the groove depth H of the installation groove 32. Through the above setting, the main body seat 111 is completely arranged in the installation groove 32, so that the main body seat 111 is prevented from being exposed outside the anti-theft ring type core fixing rod 3 and interfering with the demolding sleeve 6.
[0051] Further, the bottle cap mold is provided with at least two forced return assemblies at equal intervals in the circumferential direction. When the forced return assembly is provided with two, the two forced return assemblies are symmetrically arranged along the circumferential direction of the anti-theft ring type core fixing rod 3, so that the threaded core 1 is balanced under the extrusion force of the top bead 132, and eccentricity caused by unbalanced radial force of the threaded core 1 is avoided. In the embodiment, three forced return assemblies are arranged at equal intervals in the circumferential direction of the anti-theft ring type core fixing rod 3, the three forced return assemblies are distributed at intervals of 120° along the circumferential direction of the threaded core 1, and the ball socket 10, the first hole 21 and the second hole 31 are adaptively provided with three. In other embodiments, the forced return assembly can also be provided with more than four at equal intervals, as long as the threaded core 1 is balanced in radial force, which is not limited here.
[0052] The above embodiments only illustrate the basic principles and characteristics of the present application, and the present application is not limited by the above embodiments. Without departing from the spirit and scope of the present application, various changes and changes are made to the present application, and these changes and changes fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. A bottle cap mold, comprising an upper mold and a lower mold (9), wherein the upper mold comprises a threaded core (1), an anti-theft ring core (2), and an anti-theft ring core fixing rod (3), wherein the threaded core (1) leaves its initial position when the upper mold and the lower mold (9) are demolded, characterized in that, The threaded core (1) has a ball socket (10) on its circumferential side, the anti-theft ring core (2) has a first hole (21) in the radial direction, and the anti-theft ring core fixing rod (3) has a second hole (31) in the radial direction that is coaxially connected to the first hole (21); the bottle cap mold also includes a forced return assembly, which includes: The base (11) is set on the anti-theft ring core fixing rod (3); An elastic element (12) is inserted through the first hole (21) and the second hole (31); A top ball assembly (13) is provided, wherein the elastic element (12) is compressed and installed between the base (11) and the top ball assembly (13), and the top ball assembly (13) is configured to compress the elastic element (12) and slide out of the ball socket (10) after the threaded core (1) leaves the initial position; or, slide into and abut against the ball socket (10) when the threaded core returns to the initial position.
2. The bottle cap mold according to claim 1, characterized in that, The top bead assembly (13) includes: A retainer (131) is provided, with one end of the elastic element (12) abutting against the end of the retainer (131) away from the threaded core (1); A top ball (132) is disposed at the other end of the retainer (131) facing the threaded core (1). The top ball (132) can compress the elastic element (12) and slide out of the ball socket (10) or slide into and abut against the ball socket (10) under the action of the elastic element (12).
3. The bottle cap mold according to claim 2, characterized in that, The retainer (131) has a receiving groove (1311) at the other end facing the threaded core (1), and the top ball (132) is rolled in the receiving groove (1311) and protrudes from the retainer (131).
4. The bottle cap mold according to claim 3, characterized in that, The retainer (131) has a liquid storage tank inside, which is used to store lubricating oil and is connected to the receiving tank (1311).
5. The bottle cap mold according to claim 3, characterized in that, The retainer (131) has a first limiting groove at one end away from the threaded core (1), and one end of the elastic element (12) is disposed in the first limiting groove.
6. The bottle cap mold according to claim 1, characterized in that, The base (11) includes: The main body (111) has an installation groove (32) on the circumferential side of the anti-theft ring core fixing rod (3), the installation groove (32) is connected to the second hole (31), and the main body (111) is disposed in the installation groove (32); A boss (112) is integrally disposed on the main body seat (111) and extends into the second hole (31). The end of the elastic member (12) away from the top bead assembly (13) abuts against the boss (112).
7. The bottle cap mold according to claim 6, characterized in that, The boss (112) has a second limiting groove, and the other end of the elastic member (12) away from the top bead assembly (13) is disposed in the second limiting groove.
8. The bottle cap mold according to claim 6, characterized in that, The main body (111) is locked in the mounting groove (32) by fasteners.
9. The bottle cap mold according to claim 6, characterized in that, The distance between the end of the main body (111) away from the boss (112) and the inner bottom wall of the mounting groove (32) is less than the groove depth of the mounting groove (32).
10. The bottle cap mold according to any one of claims 1 to 9, characterized in that, The bottle cap mold is provided with at least two forced return components at equal intervals along the circumference.