Hydraulic ejection structure of plastic mold
By designing a complex hydraulic ejection structure, including hydraulic push rod, ejection shell, ejection rod, return spring, grid plate, locking member and drive member, the hydraulic ejection structure adaptation in the prior art is solved. The problem of insufficient performance, versatility and flexibility has achieved flexible adaptation to plastic molds of different shapes.
Patent Information
- Application Number
- CN202421007463.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-10
AI Technical Summary
The hydraulic ejection structure of existing plastic molds has poor adaptability, versatility and flexibility, and it is impossible to adapt to plastic molds of different shapes.
A hydraulic ejection structure including hydraulic push rod, ejection shell, ejection rod, return spring, grid plate, locking member and drive member is designed. The ejection is achieved through the synergy between the complex mechanical structure and the drive member. Locking and unlocking of the outlet rod, adapting to plastic molds of different shapes.
The applicability, versatility and flexibility of the hydraulic ejection structure are improved, allowing it to be adapted to plastic molds of different shapes, enhancing practicality.
Smart Images
Figure CN222431314U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of plastic molds, and in particular to a hydraulic ejection structure of a plastic mold. Background Art
[0002] A plastic mold is the abbreviation of a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding. The coordinated changes of the mold convex and concave molds and the auxiliary molding system can process a series of plastic parts of different shapes and sizes. In the production process of plastic products, the ejection and demolding of the plastic mold is one of the important links. In this link, a hydraulic ejection structure is required. In the prior art, each set of plastic molds needs to be used with a corresponding hydraulic ejection structure, that is, a hydraulic ejection structure can only be adapted to one shape of plastic mold, and its applicability, versatility and flexibility are poor. Therefore, a hydraulic ejection structure for a plastic mold is proposed. Utility Model Content
[0003] The purpose of the present application is to solve the technical problem that a hydraulic ejection structure can only adapt to a plastic mold of one shape and has poor applicability, versatility and flexibility. The present application provides a hydraulic ejection structure for a plastic mold.
[0004] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:
[0005] A hydraulic ejection structure for a plastic mold, comprising:
[0006] A hydraulic push rod, wherein an ejection shell is arranged at a movable end thereof, a plurality of ejection rods are slidably arranged on the ejection shell, a return spring is arranged between the ejection rod and the ejection shell, a grid plate is arranged inside the ejection shell, a locking member having the same number as the ejection rods and corresponding to each other is arranged on the grid plate, and the locking members are used to lock or unlock the ejection rods, a driving member is slidably arranged inside the ejection shell, and the driving member is used to drive the plurality of locking members to operate synchronously, and a locking member acting on the driving member is arranged on the ejection shell, and the locking member is used to lock or unlock the driving member.
[0007] Furthermore, the ejection shell is provided with fixed tubes having the same number as the ejection rods and corresponding to each other, the free ends of the ejection rods are stepped and slidably matched with the fixed tubes, and the plurality of return springs are respectively located in the plurality of fixed tubes.
[0008] Furthermore, the ejection shell is provided with countersunk holes whose number is equal to and corresponds to the ejection rods, and sealing rings are arranged in the countersunk holes.
[0009] Furthermore, the free end of the ejector rod is hemispherical.
[0010] Furthermore, the locking member includes a plurality of spring sheets which are all arranged on the grid plate and overlap with the ejection rod, and the driving member is used to drive the plurality of spring sheets to deform and be in a retracted state.
[0011] Furthermore, the driving member comprises a grille plate slidably arranged in the ejection shell, and the grille plate is provided with ring plates having the same number as the locking members and correspondingly abutting and overlapping each other.
[0012] Furthermore, the spring sheet and the ring plate are both configured with guiding inclined surfaces and the two surfaces face in opposite directions.
[0013] Furthermore, the locking member includes a limit rod and a sliding rod both of which are slidably arranged on the ejection shell, one end of the limit rod is provided with a hemispherical block, and the other end is connected to the grid plate, a tension spring is provided between the limit rod and the ejection shell, a wedge block that overlaps the hemispherical block is provided at the free end of the sliding rod, and an extrusion spring sleeved on the sliding rod is provided between the wedge block and the ejection shell.
[0014] The beneficial effects of the present application are as follows: the present application can be adapted for use with plastic molds of different shapes, thereby improving applicability, versatility and flexibility, and is therefore more practical. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional diagram of the structure of this application;
[0016] Figure 2 It is a three-dimensional diagram of the structure of part of this application;
[0017] Figure 3 It is a three-dimensional diagram of the structure of part of this application;
[0018] Figure 4 This application Figure 3 A three-dimensional cross-sectional view of
[0019] Figure 5 This application Figure 4 The enlarged view of point A in the middle;
[0020] Figure 6 It is a partial structural stereogram of this application.
[0021] Figure numerals: 1, hydraulic push rod; 2, ejector shell; 3, ejector rod; 4, return spring; 5, grid plate; 6, fixing cylinder; 7, countersunk hole; 8, sealing ring; 9, spring piece; 10, grid plate; 11, ring plate; 12, limit rod; 13, sliding rod; 14, hemispherical block; 15, tension spring; 16, wedge block; 17, extrusion spring. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.
[0023] like Figure 1-Figure 5 As shown, a hydraulic ejection structure of a plastic mold proposed in one embodiment of the present application includes:
[0024] A hydraulic push rod 1, a movable end of which is provided with an ejection shell 2, the ejection shell 2 is fixedly connected to the movable end of the hydraulic push rod 1, a plurality of ejection rods 3 are slidably provided on the ejection shell 2, the plurality of ejection rods 3 are distributed in a rectangular array, a return spring 4 is provided between the ejection rod 3 and the ejection shell 2, a mesh plate 5 is provided in the ejection shell 2, the mesh plate 5 is constructed with through holes of the same number and one-to-one correspondence as the ejection rods 3, the aperture of the through holes is larger than the diameter of the ejection rods 3, the mesh plate 5 is fixed in the ejection shell 2, the mesh plate 5 is provided with locking members of the same number and one-to-one correspondence as the ejection rods 3, which are used to lock or unlock the ejection rods 3, a driving member is slidably provided in the ejection shell 2, which is used to drive the plurality of locking members to operate synchronously, and a locking member acting on the driving member is provided on the ejection shell 2, which is used to lock or unlock the driving member;
[0025] When the cam 4 is in the state of being pressed, the cam 4 is in the state of being pressed, and the cam 4 is in the state of being pressed.
[0026] In summary, the present application can be adapted for use with plastic molds of different shapes, thereby improving applicability, versatility and flexibility, and is therefore more practical.
[0027] like Figure 3-Figure 4 As shown, in some embodiments, the ejection housing 2 is provided with fixed cylinders 6 having the same number as the ejection rods 3 and corresponding to each other, the fixed cylinders 6 are fixedly arranged in the ejection housing 2, the free ends of the ejection rods 3 are stepped and slidably matched with the fixed cylinders 6, a plurality of return springs 4 are respectively located in the plurality of fixed cylinders 6, and the two ends of the return springs 4 are respectively fixedly connected with the fixed cylinders 6 and the ejection rods 3;
[0028] Referring to the above, when the ejector rod 3 slides, the ejector rod 3 is limited by the cooperation between the step shape and the fixed tube 6. At the same time, the fixed tube 6 can also guide and limit the return spring 4 to avoid movement interference of multiple return springs 4.
[0029] like Figure 2-Figure 5 As shown, in some embodiments, the ejector housing 2 is provided with countersunk holes 7 of the same number and one-to-one corresponding to the ejector rods 3, and the plurality of countersunk holes 7 are distributed in a rectangular array, and sealing rings 8 are arranged in the countersunk holes 7, and the sealing rings 8 are fixed in the countersunk holes 7 and overlap with the ejector rods 3;
[0030] Referring to the above, when in use, the sealing ring 8 can be provided to improve the sealing performance of the ejector shell 2 to prevent plastic from entering the ejector shell 2, and the countersunk hole 7 can be provided to accommodate and hide the sealing ring 8.
[0031] like Figure 1-Figure 4 As shown, in some embodiments, the free end of the ejector rod 3 is hemispherical;
[0032] Referring to the above, when the ejector rod 3 contacts and overlaps the plastic mold, the hemispherical design can avoid damage to the plastic mold due to sharp edges.
[0033] like Figure 5 As shown, in some embodiments, the locking member includes a plurality of spring pieces 9 which are all arranged on the grid plate 5 and overlap with the ejection rod 3, the plurality of spring pieces 9 are distributed in a circular array with the through hole as the center, and the driving member is used to drive the plurality of spring pieces 9 to deform and be in a retracted state;
[0034] Referring to the above, in the initial state, the multiple spring sheets 9 are in a natural state and are away from the axis of the through hole. When in use, the multiple spring sheets 9 are driven by the driving member to deform and be in a retracted state. The multiple spring sheets 9 are close to the axis of the through hole and are in contact with and overlap the ejector rod 3 to lock the ejector rod 3. Conversely, when the driving member slides to the initial position, the multiple spring sheets 9 are reset to the natural state, thereby unlocking the ejector rod 3.
[0035] like Figure 5-Figure 6 As shown, in some embodiments, the driving member includes a grid plate 10 slidably disposed in the ejection housing 2, and the grid plate 10 is provided with ring plates 11 having the same number as the locking members and corresponding to each other and overlapping each other, and the plurality of ring plates 11 are distributed in a rectangular array and are fixed on the grid plate 10, and the ring plates 11 are coaxially distributed with the through holes;
[0036] Referring to the above, in the initial state, the grille plate 10 is away from the mesh plate 5, and the ring plate 11 is away from the multiple spring plates 9. When in use, the grille plate 10 is slid close to the mesh plate 5, driving the multiple ring plates 11 to move together, and the ring plates 11 are in contact and overlap with the multiple spring plates 9, forcing the multiple spring plates 9 to deform and be in a retracted state, and the grille plate 10 is locked by the locking member. Conversely, the grille plate 10 is unlocked by the locking member, and the grille plate 10 slides to the initial position, the ring plate 11 is away from the multiple spring plates 9, and the multiple spring plates 9 are all restored to a natural state.
[0037] like Figure 5 As shown, in some embodiments, both the spring sheet 9 and the ring plate 11 are configured with guiding inclined surfaces and the two are oriented in opposite directions, the guiding inclined surface on the spring sheet 9 shrinks inwards, and the guiding inclined surface on the ring plate 11 expands outwards;
[0038] With reference to the above, when the ring plate 11 and the plurality of spring sheets 9 are in contact and overlapped, motion interference is avoided by the transition effect of the guiding inclined surfaces on the two.
[0039] like Figure 6 As shown, in some embodiments, the locking member includes a limit rod 12 and a slide rod 13 both slidably arranged on the ejection shell 2, the sliding direction of the limit rod 12 is the same as the sliding direction of the grid plate 10, the sliding direction of the slide rod 13 is perpendicular to the sliding direction of the limit rod 12, one end of the limit rod 12 is provided with a hemispherical block 14, and the other end is connected to the grid plate 10, the grid plate 10, the limit rod 12 and the hemispherical block 14 are fixedly connected in sequence and form a step-like structure, a tension spring 15 is arranged between the limit rod 12 and the ejection shell 2, and the two ends of the tension spring 15 are respectively fixedly connected to the limit rod 12 and the ejection shell 2, a wedge block 16 that contacts and overlaps the hemispherical block 14 is arranged at the free end of the slide rod 13, the wedge block 16 is fixedly connected to the slide rod 13 and forms a step-like structure, and an extrusion spring 17 sleeved on the slide rod 13 is arranged between the wedge block 16 and the ejection shell 2, and the two ends of the extrusion spring 17 are respectively fixedly connected to the wedge block 16 and the ejection shell 2;
[0040] Referring to the above, in the initial state, the grid plate 10 is in the initial position, the tension spring 15 and the extrusion spring 17 are both in the natural state, when the grid plate 10 slides close to the grid plate 5, the limit rod 12 and the hemispherical block 14 are driven to move together, the tension spring 15 is stretched, the hemispherical surface of the hemispherical block 14 and the wedge surface of the wedge block 16 are in contact and overlap and force the wedge block 16 to slide, the extrusion spring 17 is squeezed, and then the extrusion spring 17 is reset to the natural state, the wedge block 16 slides in the opposite direction and its plane is aligned with the plane of the hemispherical block 14. The surfaces are in contact with each other and overlapped. At this time, due to the obstruction of the wedge block 16, the grille plate 10, the limit rod 12 and the hemispherical block 14 cannot move in the reverse direction to lock the grille plate 10. On the contrary, the slide bar 13 slides in the reverse direction, driving the wedge block 16 to move away from the hemispherical block 14, and the extrusion spring 17 is squeezed. At this time, due to the loss of the obstruction of the wedge block 16, the tension spring 15 returns to the natural state, and the grille plate 10, the limit rod 12 and the hemispherical block 14 all slide to the initial position, thereby unlocking the grille plate 10.
[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A hydraulic ejection structure for a plastic mold, characterized in that: include: A hydraulic push rod (1) has an ejection housing (2) disposed at its movable end, a plurality of ejection rods (3) being slidably disposed on the ejection housing (2), a return spring (4) being disposed between the ejection rods (3) and the ejection housing (2), a grid plate (5) being disposed in the ejection housing (2), the grid plate (5) being provided with locking members having the same number as the ejection rods (3) and corresponding to each other, and being used to lock or unlock the ejection rods (3), a driving member being slidably disposed in the ejection housing (2), and being used to drive the plurality of locking members to operate synchronously, and a locking member acting on the driving member being disposed on the ejection housing (2), and being used to lock or unlock the driving member.
2. The hydraulic ejection structure of a plastic mold according to claim 1, characterized in that: The ejection shell (2) is provided with fixed cylinders (6) in the same number as the ejection rods (3) and in one-to-one correspondence, the free ends of the ejection rods (3) are structured in a step shape and are slidably matched with the fixed cylinders (6), and the plurality of return springs (4) are respectively located in the plurality of fixed cylinders (6).
3. The hydraulic ejection structure of a plastic mold according to claim 1, characterized in that: The ejection shell (2) is provided with countersunk holes (7) whose number is equal to and corresponds to the ejection rods (3), and sealing rings (8) are arranged in the countersunk holes (7).
4. The hydraulic ejection structure of a plastic mold according to claim 1, characterized in that: The free end of the ejection rod (3) is hemispherical in shape.
5. The hydraulic ejection structure of a plastic mold according to claim 1, characterized in that: The locking member comprises a plurality of spring sheets (9) which are all arranged on the grid plate (5) and are in contact with and overlap the ejection rod (3); the driving member is used to drive the plurality of spring sheets (9) to deform and be in a retracted state.
6. The hydraulic ejection structure of a plastic mold according to claim 5, characterized in that: The driving member comprises a grid plate (10) slidably arranged in the ejection shell (2), and the grid plate (10) is provided with ring plates (11) which are the same in number as the locking members and which are in one-to-one contact and overlap.
7. The hydraulic ejection structure of a plastic mold according to claim 6, characterized in that: The spring sheet (9) and the ring plate (11) are both provided with guiding inclined surfaces, and the two surfaces face in opposite directions.
8. The hydraulic ejection structure of a plastic mold according to claim 5, characterized in that: The locking member comprises a limit rod (12) and a slide rod (13) both of which are slidably arranged on the ejection shell (2); one end of the limit rod (12) is provided with a hemispherical block (14), and the other end is connected to the grid plate (10); a tension spring (15) is provided between the limit rod (12) and the ejection shell (2); a wedge block (16) that abuts and overlaps the hemispherical block (14) is provided at the free end of the slide rod (13); and a compression spring (17) sleeved on the slide rod (13) is provided between the wedge block (16) and the ejection shell (2).