Mold locking mechanism of injection molding machine
By designing a mold locking mechanism for injection molding machines, and using components such as locking plates and torsion springs to limit the position of the locking blocks, the problem of material overflow caused by gaps after mold closing is solved, thus improving the practicality of the mold.
Patent Information
- Application Number
- CN202520128190.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-01-20
AI Technical Summary
After the mold of a powder metallurgy injection molding machine is closed, gaps are easily formed, causing raw materials to overflow and reducing the practicality of the mold.
A mold locking mechanism for injection molding machines was designed, including a mold locking structure and a hydraulic cylinder. The locking plate restricts the position of the locking block to prevent gaps between the fixed mold and the moving mold. Components such as torsion springs and stop bars are used to ensure the normal rotation of the locking plate and prevent excessive rotation.
It effectively prevents gaps between the fixed mold and the moving mold during injection molding, avoids material overflow, and improves the practicality of the mold.
Smart Images
Figure CN223946804U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to injection molding machine mould technical field especially relates to a injection molding machine mould locking mechanism. BACKGROUND
[0002] Powder metallurgy injection molding machine is a kind of modern plastic injection forming technology is introduced into the field of powder metallurgy and the new forming equipment formed, it is mainly used for the injection molding of metal, ceramic and other powder materials, when using, first solid powder and organic binder are evenly mixed, after granulation, in the heating plastic state, injection molding machine is injected into mold cavity and solidified forming, then the binder in the formed blank is removed by chemical or thermal decomposition method, finally, the final product is obtained by sintering densification.
[0003] The above and prior art have the following defects: the mould of powder metallurgy injection molding machine is mainly composed of a fixed mould and a movable mould, during powder metallurgy injection molding processing, when the fixed mould and the movable mould of the injection molding machine are combined, the fixed mould and the movable mould are prone to generate gaps due to the impact during injection molding, which causes the overflow of raw materials, thereby reducing the practicability of using the injection molding machine mould.
[0004] Therefore, an injection molding machine mould locking mechanism is proposed. UTILITY MODEL CONTENTS
[0005] The utility model aims at solving the problem that when the fixed mould and the movable mould of the injection molding machine are combined, the fixed mould and the movable mould are prone to generate gaps due to the impact during injection molding, which causes the overflow of raw materials, and proposes an injection molding machine mould locking mechanism.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an injection molding machine mould locking mechanism, comprising a frame, the upper end of the frame is fixedly connected with a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with a movable mould, the surface of the movable mould is provided with an injection port, the surface of the frame is fixedly connected with a fixed mould, the surface of the fixed mould is fixedly connected with a guide column, the guide column is slidably connected with the movable mould, the surface of the fixed mould is provided with a mould locking structure, the mould locking structure comprises two fixed frames, the two fixed frames are fixedly installed on the two sides of the fixed mould respectively, a rotating rod is rotatably connected in the fixed frame, the upper end of the rotating rod is fixedly connected with a lock plate, the surface of the movable mould is fixedly connected with a rectangular plate, the surface of the rectangular plate is fixedly connected with a lock block, and the upper surface of the lock block is provided with an inclined surface.
[0007] The effect of the above-mentioned components is that by setting the mould locking structure, the position of the lock block is limited by the lock plate during metallurgical powder injection operation, so as to limit the position of the fixed mould, prevent the generation of gaps between the fixed mould and the movable mould during subsequent injection operation, and prevent the overflow of raw materials, thereby improving the practicability of using the injection molding machine mould.
[0008] Preferably, the lower end of the rotating rod is fixedly connected with an extension plate, and the arc surface of the rotating rod is sleeved with a torsion spring, and the two ends of the torsion spring are fixedly connected with the extension plate and the fixed frame respectively.
[0009] The effect achieved by the above components is that when the lock block is out of contact with the inclined surface of the lock plate, the torsion spring will rotate due to its torsion force, and the extension plate will drive the rotating rod to rotate and reset.
[0010] Preferably, the upper surface of the fixed frame is fixedly connected with a blocking rod.
[0011] The effect achieved by the above components is that the rotation of the lock plate will be in contact with the blocking rod, the blocking rod limits the rotation range of the lock plate, and prevents the lock plate from rotating excessively to cause the inclined surface to be unable to align with the lock block.
[0012] Preferably, the lower surface of the fixed frame is fixedly connected with a protective cover, the protective cover abuts against the surface of the extension plate, and the spring is located in the protective cover.
[0013] The effect achieved by the above components is that the protective cover can shield and protect the torsion spring, so that the torsion spring is prevented from being deformed and damaged by being touched, and the normal cooperation of the structure is affected.
[0014] Preferably, the lower surface of the fixed frame is fixedly connected with an electric push rod, the output end of the electric push rod is fixedly connected with a top rod, the surface of the fixed frame is fixedly connected with a protruding block, and the top rod penetrates through the protruding block.
[0015] The effect achieved by the above components is that the top rod drives the extension plate to rotate the rotating rod, and when the lock plate is out of contact with the lock block, the output end of the hydraulic cylinder can be controlled to retract to lift the fixed mold.
[0016] Preferably, one end of the top rod is rotatably connected with a ball.
[0017] The effect achieved by the above components is that the top rod slides along the protruding block to make the ball abut against the surface of the extension plate, and the ball can reduce the friction between the extension plate and the top rod.
[0018] Compared with the prior art, the advantages and positive effects of the utility model lie in that,
[0019] In the utility model, the mold locking structure is arranged, the position of the lock block is limited by the lock plate during the metallurgical powder injection molding operation, so that the position of the fixed mold is limited, and the gap between the fixed mold and the movable mold is prevented from being generated during the subsequent injection molding operation, the raw material is prevented from overflowing due to the gap, and the practicability of the injection molding machine mold is improved. DRAWINGS
[0020] Figure 1 It is a whole structure schematic view of the utility model;
[0021] Figure 2The structure schematic view of the fixed frame of the utility model is shown in the figure.
[0022] Figure 3 The structure schematic view of the rectangular plate of the utility model is shown in the figure.
[0023] Figure 4 The structure schematic view of the fixed frame of the utility model is shown in the figure.
[0024] Legend: 1, frame; 2, hydraulic cylinder; 3, moving die; 4, injection port; 5, fixed die; 6, guide column; 7, locking structure; 701, fixed frame; 702, rotating rod; 703, locking plate; 704, rectangular plate; 705, locking block; 706, extension plate; 707, torsional spring; 708, inclined surface; 709, blocking rod; 710, protective cover; 711, electric push rod; 712, protruding block; 713, ejector rod; 714, ball. DETAILED DESCRIPTION
[0025] In order to more clearly understand the above purpose, features and advantages of the utility model, the utility model is further described below in combination with the drawings and examples.
[0026] In the following description, a lot of specific details are set forth in order to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from the description herein, therefore, the utility model is not limited to the specific examples disclosed in the following disclosure.
[0027] As Figures 1-4The utility model provides a kind of injection molding machine mould locking mechanism, including frame 1, the upper end of frame 1 is fixedly connected with hydraulic cylinder 2, the output end of hydraulic cylinder 2 is fixedly connected with movable mould 3, the surface of movable mould 3 is equipped with injection port 4, the surface of frame 1 is fixedly connected with fixed mould 5, the surface of fixed mould 5 is fixedly connected with guide column 6, guide column 6 is slidably connected with movable mould 3, the surface of fixed mould 5 is equipped with locking structure 7, locking structure 7 includes two fixed frames 701, two fixed frames 701 are fixedly installed on the both sides of fixed mould 5, rotatingly connected with rotating rod 702 in fixed frame 701, the upper end of rotating rod 702 is fixedly connected with lock plate 703, the surface of movable mould 3 is fixedly connected with rectangular plate 704, the surface of rectangular plate 704 is fixedly connected with lock block 705, the upper surface of lock block 705 is equipped with inclined surface 708, the lower end of rotating rod 702 is fixedly connected with extension plate 706, the camber surface of rotating rod 702 is equipped with torsional spring 707, the both ends of torsional spring 707 are fixedly connected with extension plate 706 and fixed frame 701 respectively, when lock block 705 and the inclined surface 708 of lock plate 703 are in contact, torsional spring 707 will rotate due to its torsional force, and extension plate 706 will drive rotating rod 702 to rotate and reset, the upper surface of fixed frame 701 is fixedly connected with stop rod 709, lock plate 703 rotates and is in contact with stop rod 709, stop rod 709 reaches the rotation range of lock plate 703, prevents lock plate 703 from rotating excessively and causes the effect that inclined surface 708 cannot be aligned with lock block 705.
[0028] As Figures 2-4 The lower surface of fixed frame 701 is fixedly connected with protective cover 710, protective cover 710 is against the surface of extension plate 706, spring is located in protective cover 710, protective cover 710 can shield and protect torsional spring 707, avoid torsional spring 707 from being deformed and damaged after being touched, affect the normal cooperation of structure, the lower surface of fixed mould 5 is fixedly connected with electric push rod 711, the output end of electric push rod 711 is fixedly connected with top rod 713, the surface of fixed mould 5 is fixedly connected with boss 712, top rod 713 penetrates boss 712, top rod 713 will make extension plate 706 drive rotating rod 702 to rotate, when lock plate 703 and lock block 705 are in contact, the output end of hydraulic cylinder 2 can be controlled to retract and lift fixed mould 5, one end of top rod 713 is rotatably connected with ball 714, top rod 713 slides along boss 712 and makes ball 714 abut against the surface of extension plate 706, ball 714 can reduce the friction between extension plate 706 and top rod 713.
[0029] The working principle of the whole is that when the metallurgical powder injection molding operation is needed, the output end of the hydraulic cylinder 2 is stretched, the movable mold 3 moves downward along the arc surface of the guide column 6, in the process, the rectangular plate 704 moves with the movable mold 3, the movable mold 3 drives the lock block 705 to move, when the lock block 705 contacts with the inclined surface 708 of the lock plate 703, the lock plate 703 is driven to rotate by the extrusion of the lock block 705, the extension plate 706 rotates with the rotating rod 702 and twists the torsion spring 707, when the lock block 705 is separated from the inclined surface 708 of the lock plate 703, the torsion spring 707 rotates due to the torsion force, the extension plate 706 drives the rotating rod 702 to rotate in the opposite direction, the lower surface of the lock plate 703 contacts with the arc surface of the lock block 705, the lock plate 703 limits the position of the lock block 705, thereby limiting the position of the fixed mold 5, preventing the gap between the fixed mold 5 and the movable mold 3 from causing the overflow of the raw material during the subsequent injection molding operation, the lock plate 703 rotates and contacts with the blocking rod 709, the blocking rod 709 limits the rotation range of the lock plate 703, preventing the lock plate 703 from rotating excessively and causing the inclined surface 708 to be misaligned with the lock block 705, at this time, the fixed mold 5 and the movable mold 3 are closed, and the heated and plasticized raw material is injected into the fixed mold 5 and the movable mold 3 through the injection port 4, when the mold is needed to be opened, the output end of the electric push rod 711 is stretched, the top rod 713 slides in the protrusion 712 and makes the ball 714 abut against the surface of the extension plate 706, the ball 714 can reduce the friction between the extension plate 706 and the top rod 713, the top rod 713 drives the extension plate 706 to rotate the rotating rod 702, when the lock plate 703 is separated from the lock block 705, the output end of the hydraulic cylinder 2 is controlled to be retracted to lift the fixed mold 5, thereby completing the mold opening operation, then the output end of the electric push rod 711 is controlled to be retracted to reset the top rod 713, the protective cover 710 can shield and protect the torsion spring 707, avoiding the deformation and damage of the torsion spring 707 after being touched, and preventing the structure from being affected by the normal cooperation.
[0030] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above embodiments still belongs to the protection scope of the technical scheme of the present application.
Claims
1. A mold locking mechanism for an injection molding machine, comprising a frame (1), characterized in that: A hydraulic cylinder (2) is fixedly connected to the upper end of the frame (1). A moving mold (3) is fixedly connected to the output end of the hydraulic cylinder (2). An injection port (4) is opened on the surface of the moving mold (3). A fixed mold (5) is fixedly connected to the surface of the frame (1). A guide post (6) is fixedly connected to the surface of the fixed mold (5). The guide post (6) is slidably connected to the moving mold (3). A locking structure (7) is provided on the surface of the fixed mold (5). The locking structure (7) includes two fixed frames (701). The two fixed frames (701) are respectively fixedly installed on both sides of the fixed mold (5). A rotating rod (702) is rotatably connected inside the fixed frame (701). A locking plate (703) is fixedly connected to the upper end of the rotating rod (702). A rectangular plate (704) is fixedly connected to the surface of the moving mold (3). A locking block (705) is fixedly connected to the surface of the rectangular plate (704). An inclined surface (708) is opened on the upper surface of the locking block (705).
2. The mold locking mechanism for an injection molding machine according to claim 1, characterized in that: The lower end of the rotating rod (702) is fixedly connected to an extension plate (706), and a torsion spring (707) is sleeved on the arc surface of the rotating rod (702). The two ends of the torsion spring (707) are fixedly connected to the extension plate (706) and the fixed frame (701) respectively.
3. The mold locking mechanism for an injection molding machine according to claim 1, characterized in that: A stop bar (709) is fixedly connected to the upper surface of the fixed frame (701).
4. The mold locking mechanism for an injection molding machine according to claim 2, characterized in that: A protective cover (710) is fixedly connected to the lower surface of the fixed frame (701), the protective cover (710) abuts against the surface of the extension plate (706), and the torsion spring is located inside the protective cover (710).
5. The mold locking mechanism for an injection molding machine according to claim 2, characterized in that: An electric push rod (711) is fixedly connected to the lower surface of the fixed mold (5), and a push rod (713) is fixedly connected to the output end of the electric push rod (711). A protrusion (712) is fixedly connected to the surface of the fixed mold (5), and the push rod (713) passes through the protrusion (712).
6. The mold locking mechanism for an injection molding machine according to claim 5, characterized in that: One end of the top rod (713) is rotatably connected to a ball bearing (714).