Ultrahigh molecular weight polyethylene powder compression molding flatness adjusting equipment

Abstract

The utility model discloses compression molding flatness adjusting equipment for ultra-high molecular weight polyethylene powder. The compression molding flatness adjusting equipment comprises a sliding shaft frame, movable supporting legs, a parallel ruler and a graduated scale, the sliding shaft frame is erected on the upper surface of the compression molding mold, and a rectangular moving area is arranged in the middle of the sliding shaft frame; the movable supporting leg is erected on the rectangular moving area, and the two ends of the movable supporting leg are in sliding connection with the corresponding sides of the sliding shaft frame respectively; the parallel ruler is parallel to the movable supporting leg and arranged below the sliding shaft frame, the graduated scale is vertically arranged perpendicular to the parallel ruler, the lower end of the graduated scale is connected to the middle of the parallel ruler, a mounting hole penetrating through the upper side and the lower side of the movable supporting leg is formed in the middle of the movable supporting leg, and the upper end of the graduated scale penetrates through the mounting hole. The device has the advantages that the leveling problem before compression molding of the macromolecular polyethylene powder is solved, the working efficiency and precision are improved, the human input is reduced, and the condition that the quality of manual operation is not controlled is avoided.

Description

Technical Field

[0001] This utility model relates to the field of powder compression molding flatness adjustment technology, and in particular to a device for adjusting the flatness of ultra-high molecular weight polyethylene powder compression molding. Background Technology

[0002] In ultra-high molecular weight polyethylene (UHMWPE) production facilities, quality control at the molecular level is paramount. One crucial quality control method is the compression molding of powder into a single sheet followed by a simple beam impact test. The flatness of the powder before compression molding directly impacts the thickness of the resulting plastic sheet; uneven thickness leads to inaccurate results in the subsequent simple beam test, affecting product quality and factory release. Compression molding, also known as press molding or compression molding, involves directly adding powdered or loose granular solid plastic into a mold, gradually softening and melting it through heating and pressure, then shaping it according to the mold cavity and curing it into a plastic part. It is primarily used for molding thermosetting plastics. Its disadvantages include a long molding cycle, low production efficiency, high labor intensity, and difficulty in controlling the precision of the plastic parts. During molding, powdered, granular, fragmented, or fibrous thermosetting plastic raw materials are first added directly into the open mold feeding chamber. Then, the mold is closed and heated to melt the plastic. Under the pressure of mold closing, the molten plastic fills all parts of the cavity. The plastic in the cavity undergoes a chemical cross-linking reaction, which gradually transforms the molten plastic into a non-melting, hardened, and shaped plastic part. Finally, the plastic part is demolded and removed from the mold.

[0003] The most difficult part is controlling the subsequent processing and flatness of the powder, especially since ultra-high polyethylene powder is very fine. Therefore, ensuring the flatness of the powder while maintaining its thickness becomes an important issue before compression molding. Utility Model Content

[0004] The purpose of this invention is to provide a device for adjusting the flatness of ultra-high molecular weight polyethylene powder during compression molding, thereby solving the aforementioned problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A device for adjusting the flatness of ultra-high molecular weight polyethylene powder during molding includes a sliding frame, movable support feet, a parallel ruler, and a scale. The sliding frame is erected on the upper surface of the molding die along the length direction perpendicular to the molding die, and a rectangular moving area penetrating its upper and lower sides is provided in the middle of the sliding frame. The movable support feet are erected on the rectangular moving area along the length direction parallel to the molding die, and both ends of the movable support feet are slidably connected to the corresponding sides of the sliding frame, so that the movable support feet can reciprocate on the sliding frame along the width direction of the molding die. The parallel ruler is arranged parallel to the movable support feet below the sliding frame, and the scale is vertically arranged perpendicular to the parallel ruler with its lower end connected to the middle of the parallel ruler. The movable support feet have mounting holes penetrating their upper and lower sides in the middle, and the upper end of the scale passes through the mounting holes.

[0007] Preferably, the sliding shaft frame includes two parallel and spaced sliding shafts, the two ends of which are respectively connected to the corresponding side of the compression mold via corresponding sliding bearings; the two ends of the movable support foot are respectively slidably connected to the two sliding shafts.

[0008] Preferably, the sliding shaft frame further includes a connecting beam, which is arranged perpendicular to the sliding shaft, and both ends of the connecting beam are fixedly connected to the same end of the two sliding shafts respectively.

[0009] Preferably, a mounting sleeve is provided at the middle of the movable support foot corresponding to the mounting hole, and the mounting sleeve is coaxially arranged with the mounting hole; the upper end of the scale passes through the mounting hole and the mounting sleeve in sequence.

[0010] Preferably, the device further includes a fastening screw, and the mounting sleeve has a fastening hole communicating with its interior on its side wall. The fastening hole has an internal thread, and one end of the fastening screw extends into the fastening hole and engages with the internal thread, and the end of the fastening screw abuts against the outer wall of the scale.

[0011] Preferably, the compression mold has a rectangular compression area extending through its upper and lower sides in the middle, and the sliding shaft frame is erected above the rectangular compression area along the length direction perpendicular to the compression mold.

[0012] Preferably, the compression mold is provided with handles for handling on both sides.

[0013] Preferably, the entire equipment is made of 316 stainless steel.

[0014] The beneficial effects of this utility model are as follows: 1. By using a combination of a sliding shaft and a parallel ruler, this utility model solves the problem of leveling high-molecular-weight polyethylene powder before compression molding. The accuracy of the subsequent compression-molded, flat plastic sheet is effectively improved during the simple-supported beam impact test, thus ensuring the quality of the finished product. 2. This utility model improves work efficiency and precision, reduces manpower input, and avoids the uncontrolled quality issues associated with manual operation. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the adjustment device in an embodiment of this utility model.

[0016] In the diagram: 1. Compression mold; 2. Sliding bearing; 3. Movable support foot; 4. Parallel ruler; 5. Scale; 6. Fastening screw; 7. Sliding shaft frame. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0018] like Figure 1 As shown in this embodiment, a device for adjusting the flatness of ultra-high molecular weight polyethylene powder compression molding is provided, including a sliding frame 7, movable support feet 3, a parallel ruler 4, and a scale 5. The sliding frame 7 is erected on the upper surface of the compression mold 1 along the length direction perpendicular to the compression mold 1, and a rectangular moving area penetrating its upper and lower sides is provided in the middle of the sliding frame 7. The movable support feet 3 are erected on the rectangular moving area along the length direction parallel to the compression mold 1, and the two ends of the movable support feet 3 are respectively slidably connected to the corresponding sides of the sliding frame 7, so that the movable support feet 3 can reciprocate on the sliding frame 7 along the width direction of the compression mold 1. The parallel ruler 4 is arranged parallel to the movable support feet 3 below the sliding frame 7, and the scale 5 is vertically arranged perpendicular to the parallel ruler 4 with its lower end connected to the middle of the parallel ruler 4. The middle of the movable support feet 3 is provided with mounting holes penetrating its upper and lower sides, and the upper end of the scale 5 passes through the mounting holes.

[0019] In this embodiment, the compression mold 1 has a rectangular compression area extending through its upper and lower sides in the middle, and the sliding frame 7 is erected above the rectangular compression area along a length direction perpendicular to the compression mold 1. Handles for handling are provided on corresponding sides of the compression mold 1.

[0020] The equipment operation process is as follows: Before use, clean the inside of the polyethylene powder compression mold 1. The operator holds the handle and moves the compression mold 1 to the corresponding operating position. Place the powder to be compressed into the compression mold 1, and then install the equipment on top of the compression mold 1. If the powder thickness needs to be controlled at 10mm, adjust the scale 5 to 10mm. Then, push the movable support foot 3 back and forth to move it along the sliding shaft frame 7, thereby driving the parallel ruler 4 on the lower side to move and level the powder. Remove excess powder, and add more powder to fill in any insufficient powder to achieve the purpose of leveling.

[0021] In this embodiment, the sliding shaft frame 7 includes two parallel and spaced-apart sliding shafts. The two ends of each sliding shaft are connected to the corresponding side of the compression mold 1 via corresponding sliding bearings 2. The two ends of the movable support foot 3 are slidably connected to the two sliding shafts. The sliding bearings 2 allow the sliding shaft frame 7 to be conveniently installed on compression molds 1 of different sizes.

[0022] Specifically: Each end of the movable support leg 3 can have a sliding hole, through which two sliding shafts pass. Pushing the movable support leg 3 causes its ends to move along the corresponding sliding shafts. Alternatively, the inner sides of the two sliding shafts can each have a groove extending along their length, with each end of the movable support leg 3 extending into the corresponding groove. Pushing the movable support leg 3 causes its ends to move along the corresponding sliding shafts. Or, each of the two sliding shafts can have a slide rail extending along its length, with each end of the movable support leg 3 having a slider or pulley that engages with the slide rail. Pushing the movable support leg 3 causes the slider or pulley at each end to move along the corresponding slide rail. In practical use, the appropriate structural configuration can be selected based on the actual situation to better meet the specific needs.

[0023] The sliding shaft frame 7 also includes a connecting beam, which is perpendicular to the sliding shaft, and both ends of the connecting beam are fixedly connected to the same end of the two sliding shafts. The function of the connecting beam is to ensure that the two sliding shafts do not move relative to each other, and to avoid deviation in the parallelism between the two sliding shafts, thereby affecting the movement effect of the movable support leg 3.

[0024] In this embodiment, a mounting sleeve is provided at the middle of the movable support leg 3 corresponding to the mounting hole, and the mounting sleeve is coaxially arranged with the mounting hole. The upper end of the scale 5 passes through the mounting hole and the mounting sleeve in sequence. The device also includes a fastening screw 6. A fastening hole communicating with the inside of the mounting sleeve is provided on the side wall of the mounting sleeve. An internal thread is provided in the fastening hole. One end of the fastening screw 6 extends into the fastening hole and engages with the internal thread, and the end of the fastening screw 6 abuts against the outer wall of the scale 5. When it is necessary to change the thickness of the powder, the scale 5 is moved up and down in the mounting sleeve to a suitable position, and then the scale 5 is fixed in that position using the fastening screw 6.

[0025] In this embodiment, the equipment can control the flatness of polyethylene powder to within 0.02mm, and is suitable for powders with a thickness range of 1mm-15mm. The entire equipment is made of 316 stainless steel, which improves the cleanliness during use and prevents material contamination due to rust or other reasons.

[0026] By adopting the above-disclosed technical solution of this utility model, the following beneficial effects are obtained:

[0027] This invention provides a flatness adjustment device for ultra-high analytical polyethylene powder compression molding. By using a combination of a sliding shaft and a parallel ruler, this invention solves the problem of leveling the polyethylene powder before compression molding. The resulting flattened plastic sheet is then subjected to a simple-supported beam impact test, effectively improving the accuracy of the process and ensuring the quality of the finished product. This invention improves work efficiency and precision, reduces manpower input, and avoids the uncontrolled quality issues associated with manual operation.

[0028] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An ultra-high molecular weight polyethylene powder compression molding flatness adjustment apparatus, characterized by: The device comprises a sliding axle frame, a moving support foot, a parallel ruler and a scale ruler; the sliding axle frame is arranged on the upper surface of the compression molding mold along the direction perpendicular to the length of the compression molding mold; the middle part of the sliding axle frame is provided with a rectangular moving area penetrating through the upper and lower sides thereof; the moving support foot is arranged on the rectangular moving area along the direction parallel to the length of the compression molding mold; the two ends of the moving support foot are respectively connected with the corresponding sides of the sliding axle frame in a sliding mode, so that the moving support foot can reciprocate on the sliding axle frame along the width direction of the compression molding mold; the parallel ruler is arranged below the sliding axle frame in parallel to the moving support foot; the scale ruler is arranged vertically in perpendicular to the parallel ruler, and the lower end of the scale ruler is connected with the middle part of the parallel ruler; the middle part of the moving support foot is provided with a mounting hole penetrating through the upper and lower sides thereof; and the upper end of the scale ruler penetrates through the mounting hole.

2. The UHMW PE powder compression molding flatness adjustment apparatus according to claim 1, characterized in that: The sliding axle frame comprises two sliding axles arranged in parallel and at intervals; the two ends of the sliding axles are respectively connected with the corresponding sides of the compression molding mold through corresponding sliding bearings; and the two ends of the moving support foot are respectively connected with the two sliding axles in a sliding mode.

3. The UHMW PE powder compression molding flatness adjustment apparatus according to claim 2, characterized in that: The sliding axle frame further comprises a connecting beam arranged in perpendicular to the sliding axles; and the two ends of the connecting beam are respectively fixedly connected with the same ends of the two sliding axles.

4. The UHMW PE powder compression molding flatness adjustment apparatus according to claim 1, characterized in that: The middle part of the moving support foot is provided with a mounting sleeve corresponding to the mounting hole; the mounting sleeve is coaxially arranged with the mounting hole in an up-down mode; and the upper end of the scale ruler penetrates through the mounting hole and the mounting sleeve in sequence.

5. The UHMW PE powder compression molding flatness adjustment apparatus according to claim 4, characterized in that: The device further comprises a fastening screw; the side wall of the mounting sleeve is provided with a fastening hole in communication with the inside of the mounting sleeve; the fastening hole is provided with an internal thread; one end of the fastening screw is inserted into the fastening hole and engaged with the internal thread; and the end of the fastening screw abuts against the outer wall of the scale ruler.

6. The UHMW PE powder compression molding flatness adjustment apparatus according to claim 1, characterized in that: The middle part of the compression molding mold is provided with a rectangular compression molding area penetrating through the upper and lower sides thereof; and the sliding axle frame is arranged above the rectangular compression molding area along the direction perpendicular to the length of the compression molding mold.

7. The UHMW PE powder compression molding flatness adjustment apparatus according to claim 6, characterized in that: The corresponding two sides of the compression molding mold are provided with handles for carrying.

8. The UHMW PE powder compression molding flatness adjustment apparatus according to claim 1, characterized in that: The whole device is made of 316 stainless steel.

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