An adjustable load-bearing plastic mold frame and its adjusting method

Abstract

The application discloses an adjustable bearing type plastic mold frame and an adjusting method thereof, relates to the technical field of mold frames, and improves the problems of local overload, uneven wear and stability reduction of the existing fixed mold frame caused by the inability to adapt to different mold gravity centers, and the adjustable bearing type plastic mold frame comprises a mold frame body and a supporting structure, the supporting structure comprises at least two bearing beams arranged at intervals and a plurality of adjusting assemblies on each bearing beam; the bearing beam is fixedly connected with the bottom of the mold frame body; the adjusting assembly comprises a mounting seat, an adjusting screw and a supporting pad, the mounting seat is slidably connected with the bearing beam, the adjusting screw is threadedly connected with the mounting seat, and the supporting pad is rotatably connected to the end of the adjusting screw; the bearing position and the supporting height are changed by adjusting the position of the mounting seat and the extension length of the adjusting screw. The application has the effects of adjusting the supporting state according to the mold gravity center position and the load distribution, making the heavy load area obtain targeted support, improving the bearing stability, the mold frame reliability and the service life.

Description

Technical Field

[0001] This application relates to the field of mold frame technology, and in particular to an adjustable load-bearing plastic mold frame and its adjustment method. Background Technology

[0002] Plastic mold frames are crucial load-bearing components of injection molds, primarily used for mounting, positioning, and supporting the mold, and bearing the mold's own weight, clamping forces, and various loads generated during the injection molding process. To improve equipment utilization and production efficiency, the same plastic mold frame typically needs to be compatible with molds of different specifications and structures. In actual production, due to differences in mold size, weight, and center of gravity, the load distribution borne by the mold frame will also change. Therefore, the load-bearing stability of the mold frame support structure has a significant impact on the mold installation accuracy and service life.

[0003] Existing plastic mold frames typically consist of a mold frame body and a support structure located beneath it. This support structure transfers the mold load to the equipment foundation or mounting platform. To ensure structural strength, most existing support structures employ a fixed design, with their support positions and ranges remaining largely unchanged after manufacturing. When installing a mold with a shifted center of gravity, the mold load concentrates on a localized area of ​​the mold frame, causing significant differences in the load borne by different areas of the support structure. Because it is difficult to adjust the load-bearing area of ​​the support structure according to the mold's center of gravity, some support areas tend to be under high load for extended periods, while other areas experience low loads.

[0004] During long-term use, the aforementioned uneven stress will not only increase the wear of local support components, but also reduce the overall stress balance of the mold frame, thereby affecting the load-bearing stability and service life of the mold frame. Summary of the Invention

[0005] In order to improve the problems of local overload, uneven wear and decreased stability caused by the inability of existing fixed mold frames to adapt to different mold centers of gravity, this application provides an adjustable load-bearing plastic mold frame and its adjustment method.

[0006] This application provides an adjustable load-bearing plastic mold frame and its adjustment method, adopting the following technical solution: An adjustable load-bearing plastic mold frame includes a mold frame body and a support structure disposed below the mold frame body, characterized in that: the support structure includes two spaced load-bearing beams arranged horizontally and an adjustment component spaced on the load-bearing beams; The load-bearing beam is fixedly connected to the bottom of the formwork body; The adjustment assembly includes a mounting base, an adjusting screw, and a support pad. The mounting base is slidably connected to the corresponding load-bearing beam and can move along the length of the load-bearing beam. The adjusting screw passes through the mounting base and is threadedly connected to the mounting base. The support pad is rotatably connected to the end of the adjusting screw away from the mounting base. By adjusting the position of the mounting base on the load-bearing beam and the extension length of the adjusting screw, the load-bearing position and support height of the corresponding area of ​​the support structure can be changed.

[0007] Preferably, the adjustment assembly further includes a locking member, which is disposed between the mounting base and the load-bearing beam, and the mounting base is fixed to a preset position on the load-bearing beam by the locking member.

[0008] Preferably, the adjusting assembly further includes a locking nut, which is sleeved and threaded onto the adjusting screw, and abuts against the mounting base to limit the axial position of the adjusting screw.

[0009] Preferably, the load-bearing beam includes an upper wing plate, a lower wing plate, and a web plate connecting the upper wing plate and the lower wing plate. The upper wing plate is fixedly connected to the bottom of the mold frame body, the mounting seat is slidably connected to the lower wing plate, and a fixing member is provided between the mounting seat and the lower wing plate.

[0010] Preferably, the support structure further includes a connecting beam, which is disposed between two adjacent load-bearing beams. The two ends of the connecting beam are detachably connected to the corresponding load-bearing beams, and the extension direction of the connecting beam is arranged perpendicular to the length direction of the load-bearing beam.

[0011] Preferably, an elastic buffer layer is fixedly connected to the lower surface of the support pad, and the elastic buffer layer is sandwiched between the support pad and the mounting base.

[0012] Preferably, the adjustment assembly further includes a pressure sensor, which is disposed between the mounting base and the support pad, with both ends of the pressure sensor abutting against the mounting base and the support pad, respectively.

[0013] An adjustment method for an adjustable load-bearing plastic mold frame includes the following steps: S1. Install the mold onto the mold frame body; S2. Determine the center of gravity of the mold and obtain the corresponding load distribution information of the mold; S3. Adjust the screw depth of each adjusting screw relative to the corresponding mounting base so that each support pad contacts the mounting foundation and forms the support height of the corresponding load-bearing beam; S4. Based on the load values ​​fed back by each pressure sensor, continue to adjust the corresponding adjusting screws to match the force distribution of each support point with the load distribution of the mold. S5. Tighten and fix each adjusting screw to complete the adjustment of the load-bearing state of the support structure.

[0014] In summary, this application includes at least one of the following beneficial effects: 1. This application provides a support structure including a load-bearing beam and an adjustment component under the mold frame body, and enables the mounting base to move along the load-bearing beam and the adjusting screw to adjust the support height of the support pad. This allows for flexible adjustment of the support position and load-bearing area according to the center of gravity position and load distribution of different molds, making the support point closer to the high load area, reducing the long-term overload of local support, and improving the overall stress balance and load-bearing stability of the mold frame. 2. In addition, by independently adjusting the support position and support height of each adjustment component, and by combining the load information fed back by the pressure sensor to optimize the configuration of each support point, the support structure can adapt to the installation requirements of molds of different specifications and weights, reduce local wear and structural fatigue caused by concentrated loads, which is conducive to extending the service life of plastic mold frames and improving the installation accuracy and reliability of molds. Attached Figure Description

[0015] Figure 1 This is an overall schematic diagram of the mold frame body and support structure of this embodiment of the application; Figure 2 This is a schematic diagram of the structure of the adjustment component in this embodiment of the application.

[0016] Explanation of reference numerals in the attached drawings: 1. Mold frame body; 2. Support structure; 21. Bearing beam; 211. Upper flange; 212. Lower flange; 213. Web plate; 22. Adjustment assembly; 221. Mounting base; 222. Adjusting screw; 223. Support pad; 224. Locking nut; 3. Connecting crossbeam; 4. Locking element; 5. Elastic buffer layer. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0018] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0019] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0020] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0021] In addition, the term "multiple" should mean two or more.

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments. Example

[0023] This application discloses an adjustable load-bearing plastic mold frame, including a mold frame body 1 and a support structure 2 disposed below the mold frame body 1. The mold frame body 1 is used to install and fix the mold, and the support structure 2 is used to transfer the load of the mold frame body 1 and the mold to the equipment foundation or installation platform, and can adjust the load-bearing position and support height according to the center of gravity position and load distribution of the mold, thereby achieving balanced load bearing.

[0024] The support structure 2 includes two spaced, horizontally arranged load-bearing beams 21 and four adjustment components 22 mounted on each load-bearing beam 21. The two load-bearing beams 21 extend along the length or width of the mold frame body 1 (in this embodiment, they extend along the width of the mold frame body 1) and are fixedly connected to the bottom of the mold frame body 1. The adjustment components 22 can move along the length of the load-bearing beams 21 and can independently adjust the support height, thereby achieving flexible adjustment of the load-bearing state under different mold load conditions.

[0025] Specifically, the load-bearing beam 21 has a portal frame-like structure, including an upper flange 211, a lower flange 212, and a web 213 connecting the upper flange 211 and the lower flange 212. The top of the upper flange 211 abuts against the bottom of the formwork body 1, and the lower flange 212 serves as the mounting base for the adjusting assembly 22. This structure can reduce material usage while ensuring overall load-bearing strength and improving the bending resistance of the load-bearing beam 21.

[0026] To facilitate the sliding of the adjustment component 22 along the load-bearing beam 21, a guide rail extending along the length of the load-bearing beam 21 is provided on the lower flange 212. The guide rail can be T-shaped, dovetail-shaped, or rectangular, etc., to ensure the accuracy and stability of the sliding fit. Furthermore, a connecting beam 3 is provided between two adjacent load-bearing beams 21. The connecting beam 3 can be connected to the load-bearing beam 21 by bolts or by a detachable connection method such as a pin connection. The extension direction of the connecting beam 3 is perpendicular to the length of the load-bearing beam 21. The connecting beam 3 improves the overall rigidity and torsional resistance of the support structure 2, and the number and location of the beams can be selected as needed to adapt to different load-bearing requirements.

[0027] The adjustment assembly 22 includes a mounting base 221, an adjusting screw 222, and a support pad 223. The mounting base 221 is mounted on the lower wing plate 212 and cooperates with the guide rail. The lower wing plate 212 has a groove along its length for the adjusting screw to slide. The mounting base 221 is slidably connected to the guide rail, allowing it to move along the length of the supporting beam 21. When the support position needs to be changed, the mounting base 221 can slide to the target position within the guide rail and be fixed in the corresponding position by the locking member 4. The locking member 4 can be a locking bolt, a pressure plate locking mechanism, an eccentric locking mechanism, or other structures capable of positioning and locking the mounting base 221. This embodiment uses a locking bolt for ease of use.

[0028] An adjusting screw 222 passes through and is threadedly connected to the mounting base 221. By rotating the adjusting screw 222, it can move axially relative to the mounting base 221, thereby changing the height position of the support pad 223 relative to the mold frame body 1. A handle is provided at the upper end of the adjusting screw 222, allowing the operator to adjust the height of the adjusting screw 222 by rotating the handle; the handle is always located below the connecting beam 3. By adjusting the position of the mounting base 221 on the bearing beam 21 and the extension length of the adjusting screw 222, the support pad 223 forms a support point with adjustable position and height, so as to adjust the bearing area of ​​the support structure 2 according to the center of gravity position and load distribution of the mold, so that each support point supports different load areas.

[0029] A support pad 223 is located at the end of the adjusting screw 222 furthest from the mounting base 221 and is rotatably connected to the adjusting screw 222. Because the support pad 223 can rotate relative to the adjusting screw 222, it can automatically adjust the contact angle when in contact with the mounting base, resulting in a larger contact area between the bottom surface of the support pad 223 and the mounting base, thereby improving support stability. The support pad 223 can have a disc-shaped structure.

[0030] To prevent the adjusting screw 222 from loosening due to vibration after adjustment, the adjusting assembly 22 also includes a locking nut 224. The locking nut 224 is sleeved on the outside of the adjusting screw 222 and threadedly connected to it. The locking nut 224 is located between the mounting base 221 and the support pad 223. When the adjusting screw 222 is adjusted to the target position, the locking nut 224 rotates along the adjusting screw 222 and abuts against the mounting base 221. The clamping action between the locking nut 224 and the mounting base 221 restricts the rotation of the adjusting screw 222 relative to the mounting base 221, thereby maintaining a stable support height.

[0031] Furthermore, an elastic buffer layer 5 is fixedly connected to the upper surface of the support pad 223. The elastic buffer layer 5 is sandwiched between the support pad 223 and the mounting base. The elastic buffer layer 5 can be made of rubber, polyurethane, or other materials with elastic buffering properties. When the mold frame is subjected to vibration load or impact load during injection molding, the elastic buffer layer 5 can generate elastic deformation, thereby reducing the transmission of vibration to the mold frame body 1 and reducing the impact of vibration on the support structure 2 and the mold frame body 1.

[0032] In this embodiment, the adjustment component 22 also includes a pressure sensor. The pressure sensor is disposed between the mounting base 221 and the support pad 223, with its upper end abutting against the mounting base 221 and its lower end abutting against the support pad 223. The pressure sensor can detect the load borne by the corresponding support point in real time and transmit the detection result to a display device or control device for operator reference. By setting multiple pressure sensors, the force condition of each support point can be obtained, thereby providing a basis for adjusting the support state. Example

[0033] This application embodiment also provides an adjustment method for the above-mentioned adjustable load-bearing plastic mold frame, including the following steps: S1. Install the mold onto the mold frame body 1.

[0034] S2. Based on the mold's structural parameters, installation location, or information obtained from testing, determine the mold's center of gravity and obtain the corresponding load distribution.

[0035] S3. Adjust the screw depth of each adjusting screw 222 relative to the corresponding mounting base 221 so that each support pad 223 contacts the mounting foundation and forms the support height of the corresponding load-bearing beam 21. This step is a preliminary adjustment, the purpose of which is to make all support points contact the mounting foundation and avoid the occurrence of suspended support points.

[0036] S4. Based on the load values ​​fed back by each pressure sensor, continue to adjust the corresponding adjusting screw 222 to match the force distribution of each support point with the load distribution of the mold. Specifically, for areas with larger loads, the extension length of the corresponding adjusting screw 222 can be appropriately increased to allow the support point to bear more load; for areas with smaller loads, the extension length of the corresponding adjusting screw 222 can be appropriately decreased to allow the support point to unload appropriately. Through repeated fine-tuning, the force on each support point is made more balanced.

[0037] S5. Tighten and fix each adjusting screw 222 to complete the adjustment of the load-bearing state of the support structure 2. Specifically, tighten each locking nut 224 so that the upper end face of the locking nut 224 is in close contact with the lower end face of the mounting base 221, thereby preventing the adjusting screw 222 from loosening during use.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An adjustable load-bearing plastic mold frame, comprising a mold frame body (1) and a support structure (2) disposed below the mold frame body (1), characterized in that: The support structure (2) includes two spaced-apart load-bearing beams (21) arranged in the horizontal direction and adjustment components (22) spaced-apart on the load-bearing beams (21). The supporting beam (21) is fixedly connected to the bottom of the formwork body (1); The adjustment assembly (22) includes a mounting base (221), an adjustment screw (222), and a support pad (223). The mounting base (221) is slidably connected to the corresponding bearing beam (21) and can move along the length of the bearing beam (21). The adjustment screw (222) passes through the mounting base (221) and is threadedly connected to the mounting base (221). The support pad (223) is rotatably connected to the end of the adjustment screw (222) away from the mounting base (221). By adjusting the position of the mounting base (221) on the bearing beam (21) and the extension length of the adjustment screw (222), the bearing position and support height of the corresponding area of ​​the support structure (2) can be changed.

2. The adjustable load-bearing plastic mold frame according to claim 1, characterized in that: The adjustment component (22) also includes a locking element (4), which is disposed between the mounting base (221) and the bearing beam (21). The mounting base (221) is fixed to the bearing beam (21) at a preset position by the locking element (4).

3. The adjustable load-bearing plastic mold frame according to claim 1, characterized in that: The adjustment assembly (22) also includes a locking nut (224), which is sleeved and threaded onto the adjustment screw (222). The locking nut (224) abuts against the mounting base (221) to limit the axial position of the adjustment screw (222).

4. The adjustable load-bearing plastic mold frame according to claim 1, characterized in that: The load-bearing beam (21) includes an upper wing plate (211), a lower wing plate (212), and a web plate (213) connecting the upper wing plate (211) and the lower wing plate (212). The upper wing plate (211) is fixedly connected to the bottom of the mold frame body (1), and the mounting seat (221) is slidably connected to the lower wing plate (212). A fixing member is provided between the mounting seat (221) and the lower wing plate (212).

5. An adjustable load-bearing plastic mold frame according to claim 4, characterized in that: The support structure (2) also includes a connecting beam (3), which is disposed between two load-bearing beams (21). The two ends of the connecting beam (3) are detachably connected to the corresponding load-bearing beams (21), and the extension direction of the connecting beam (3) is arranged perpendicular to the length direction of the load-bearing beams (21).

6. The adjustable load-bearing plastic mold frame according to claim 5, characterized in that: An elastic buffer layer (5) is fixedly connected to the lower surface of the support pad (223), and the elastic buffer layer (5) is sandwiched between the support pad (223) and the installation base.

7. The adjustable load-bearing plastic mold frame according to claim 1, characterized in that: The adjustment assembly (22) also includes a pressure sensor, which is disposed between the mounting base (221) and the support pad (223), with both ends of the pressure sensor abutting against the mounting base (221) and the support pad (223) respectively.

8. A method for adjusting an adjustable load-bearing plastic mold frame according to any one of claims 1 to 7, characterized in that, Includes the following steps: S1. Install the mold onto the mold frame body (1); S2. Determine the center of gravity of the mold and obtain the corresponding load distribution information of the mold; S3. Adjust the screw depth of each adjusting screw (222) relative to the corresponding mounting base (221) so that each support pad (223) contacts the mounting base and forms the support height of the corresponding load-bearing beam (21); S4. Based on the load values ​​fed back by each pressure sensor, continue to adjust the corresponding adjusting screw (222) to match the force distribution of each support point with the load distribution of the mold. S5. Tighten and fix each adjusting screw (222) to complete the load-bearing state adjustment of the support structure (2).

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