Forming equipment for ultra-high molecular weight polyethylene profile

Abstract

The utility model discloses forming equipment for an ultra-high molecular weight polyethylene profile, and relates to the technical field of production equipment for the ultra-high molecular weight polyethylene profile. The device comprises a rectangular bottom plate, wherein a balance mechanism and a buffer mechanism are arranged on the rectangular bottom plate; a forming mold is fixedly connected to the top of the rectangular bottom plate, an L-shaped supporting frame is fixedly connected to the top of the rectangular bottom plate, a hydraulic cylinder is fixedly connected to the top of the L-shaped supporting frame, and an output shaft of the hydraulic cylinder penetrates through the L-shaped supporting frame. Through the arrangement of the balance mechanism, the problems that in the using process of existing ultra-high molecular weight polyethylene profile forming equipment, pressure borne by different parts of a profile is different, in the area with small pressure, material particles are not tightly combined, the density is relatively low, in the area with large pressure, materials are excessively compacted, the density is too high, and the forming efficiency is high are solved. Therefore, the overall mechanical property and the use reliability of the profile are influenced.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultra-high molecular polyethylene profile production equipment, in particular to ultra-high molecular polyethylene profile molding equipment. Background Art

[0002] Ultra-high molecular weight polyethylene has been widely used in many fields due to its excellent properties such as wear resistance, self-lubrication, corrosion resistance and high impact resistance. In the field of mechanical manufacturing, it is often used to manufacture wear-resistant parts, which can significantly extend the service life of equipment. In the chemical industry, due to its excellent chemical corrosion resistance, it has become an ideal material for making pipelines, reactor linings, etc. In the medical field, it has good biocompatibility and is used to manufacture medical devices such as artificial joints. With the continuous expansion of the application scope of ultra-high molecular weight polyethylene profiles, higher requirements are placed on its molding quality and production efficiency.

[0003] During the use of existing ultra-high molecular weight polyethylene profile molding equipment, different parts of the profile are subjected to different pressures. In areas with lower pressure, the material particles are not tightly bonded and the density is relatively low, while in areas with higher pressure, the material is over-compacted and the density is too high, which affects the overall mechanical properties and reliability of the profile. Utility Model Content

[0004] The utility model aims to provide a molding device for ultra-high molecular polyethylene profiles. By setting a balancing mechanism, the utility model solves the problem that in the use of the existing ultra-high molecular polyethylene profile molding device, different parts of the profile are subjected to different pressures. In the area with lower pressure, the combination between material particles is not tight enough and the density is relatively low, while in the area with higher pressure, the material is over-compacted and the density is too high, thereby affecting the overall mechanical properties and reliability of the profile.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a molding device for ultra-high molecular polyethylene profiles, comprising a rectangular bottom plate, on which a balancing mechanism and a buffer mechanism are arranged;

[0007] The top of the rectangular base plate is fixedly connected to a forming mold, the top of the rectangular base plate is fixedly connected to an L-shaped support frame, the top of the L-shaped support frame is fixedly connected to a hydraulic cylinder, the output shaft of the hydraulic cylinder passes through the L-shaped support frame, the output shaft of the hydraulic cylinder is fixedly connected to a connecting plate, the balancing mechanism comprises a hot pressing plate arranged above the rectangular base plate, the top of the hot pressing plate is slidably connected to two balancing plates, a plurality of trapezoidal slide grooves 1 are provided on the top of the rectangular base plate, a plurality of trapezoidal slide blocks 1 are slidably connected to the inner walls of the plurality of trapezoidal slide grooves 1, the tops of the plurality of trapezoidal slide blocks 1 are fixedly connected to the two balancing plates, and the tops of the two balancing plates are fixedly connected to two connecting blocks 1.

[0008] Furthermore, two connecting blocks 2 are fixedly connected to the left and right sides of the connecting plate, and connecting rods are hingedly provided on the side of several connecting blocks 2 away from the connecting plate, and the bottoms of several connecting rods are respectively hinged to several connecting blocks 1.

[0009] Furthermore, the buffer mechanism comprises a trapezoidal slide groove 2 opened on the top of the hot pressing plate, and two trapezoidal sliding blocks 2 are slidably connected to the inner wall of the trapezoidal slide groove 2.

[0010] Furthermore, the tops of the two trapezoidal sliding blocks are fixedly connected to L-shaped sliding blocks, the tops of the two L-shaped sliding blocks are fixedly connected to arc-shaped spring sheets, and the tops of the arc-shaped spring sheets are in contact with the connecting plate.

[0011] Furthermore, two U-shaped connecting plates are fixedly connected to the top of the hot pressing plate, and the two L-shaped sliding plates are fixedly connected to the sides away from each other with sliding rods, and the two sliding rods pass through the two U-shaped connecting plates respectively on the sides away from each other, and the two sliding rods are slidably connected to the two U-shaped connecting plates respectively.

[0012] Furthermore, a spring 1 is sleeved on the outer wall of the two sliding rods, and the sides of the two springs 1 that are away from each other are fixedly connected to the two U-shaped connecting plates respectively, and the sides of the two springs 1 that are close to each other are fixedly connected to the two L-shaped slide plates respectively.

[0013] Furthermore, a plurality of dampers are fixedly connected to the top of the hot pressing plate, the tops of the plurality of dampers are fixedly connected to the connecting plate, a spring 2 is sleeved on the outer wall of the plurality of dampers, the tops of the plurality of springs 2 are fixedly connected to the connecting plate, and the bottoms of the plurality of springs 2 are fixedly connected to the hot pressing plate.

[0014] The utility model has the following beneficial effects:

[0015] 1. By setting a balancing mechanism, when the raw material of the high molecular polyethylene profile needs to be hot-pressed, it can be placed in the forming mold, and the hot pressing plate is heated, and then the hydraulic cylinder is started to extend it, thereby driving the hot pressing plate to move downward through the connecting plate. When the hot pressing plate moves into the forming mold and contacts the raw material, the connecting plate continues to descend, and the two balancing plates will move away from each other at the connection between the connecting block 1, the connecting block 2 and the connecting rod until they move to the end of the trapezoidal slide groove 1, thereby balancing the pressure of the hydraulic cylinder on the hot pressing plate, so that the pressure on the entire surface of the hot pressing plate in contact with the raw material can be ensured to be consistent, so that each part of the ultra-high molecular polyethylene raw material is subjected to the same pressure during the hot pressing process, avoiding the situation where the local pressure is too large or too small, thereby preventing the profile from having problems such as uneven density and inconsistent thickness, and improving the dimensional accuracy and appearance quality of the profile;

[0016] 2. By setting a buffer mechanism, when the connecting plate contacts the raw material, the descending speed of the hot pressing plate will decrease, but the descending speed of the connecting plate is unchanged, so the distance between the connecting plate and the hot pressing plate will gradually decrease. At this time, the hydraulic cylinder will continue to apply pressure to the hot pressing plate through the connecting plate, and this pressure will be buffered under the action of the damper and the second spring. At the same time, the arc-shaped spring sheet will also drive the two L-shaped slides away from each other under the action of the connecting plate and the hot pressing plate, and make them close to the U-shaped connecting plate. In this process, the spring one on the slide rod will also be compressed, thereby further increasing the buffering effect of the device while reducing the fatigue of the damper and the second spring, so that the pressure of the hydraulic cylinder can be avoided from being completely applied to the raw material instantly, and the ultra-high molecular polyethylene material can be avoided from being locally over-extruded, deformed or even ruptured when it is not fully adapted to the pressure, which helps to ensure the integrity and quality stability of the final profile;

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0021] Figure 3It is a partial cross-sectional structural schematic diagram of the buffer mechanism of the utility model;

[0022] Figure 4 For this utility model Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0023] Figure 5 For this utility model Figure 3 Schematic diagram of the enlarged structure of B.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Rectangular base plate; 101. Forming mold; 102. L-shaped support frame; 103. Hydraulic cylinder; 104. Connecting plate; 2. Balancing mechanism; 211. Hot pressing plate; 212. Balancing plate; 213. Trapezoidal slide chute 1; 214. Trapezoidal slider 1; 215. Connecting block 1; 216. Connecting block 2; 217. Connecting rod; 3. Buffer mechanism; 311. Trapezoidal slide chute 2; 312. Trapezoidal slider 2; 313. L-shaped slider; 314. Arc-shaped spring piece; 315. U-shaped connecting plate; 316. Slide rod; 317. Spring 1; 318. Damper; 319. Spring 2. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-5As shown, the utility model is a forming device for ultra-high molecular polyethylene profiles, comprising a rectangular bottom plate 1, a balancing mechanism 2 and a buffer mechanism 3 are arranged on the rectangular bottom plate 1, a forming mold 101 is fixedly connected to the top of the rectangular bottom plate 1, an L-shaped support frame 102 is fixedly connected to the top of the rectangular bottom plate 1, a hydraulic cylinder 103 is fixedly connected to the top of the L-shaped support frame 102, an output shaft of the hydraulic cylinder 103 passes through the L-shaped support frame 102, a connecting plate 104 is fixedly connected to the output shaft of the hydraulic cylinder 103, the balancing mechanism 2 comprises a hot pressing plate 211 arranged above the rectangular bottom plate 1, two balancing plates 212 are slidably connected to the top of the hot pressing plate 211, a plurality of trapezoidal slide grooves 213 are opened on the top of the rectangular bottom plate 1, a plurality of trapezoidal slide blocks 214 are slidably connected to the inner walls of the plurality of trapezoidal slide grooves 213, and a plurality of The top of the trapezoidal slider 214 is fixedly connected to the two balance plates 212, the tops of the two balance plates 212 are fixedly connected to two connection blocks 1 215, the left and right sides of the connection plate 104 are fixedly connected to two connection blocks 216, and a plurality of connection blocks 216 are hingedly provided with connection rods 217 on the side away from the connection plate 104, and the bottoms of the plurality of connection rods 217 are respectively hinged to a plurality of connection blocks 1 215. By setting the balancing mechanism 2, it is possible to ensure that the pressure on the entire surface of the hot pressing plate 211 in contact with the raw material is consistent, so that each part of the ultra-high molecular weight polyethylene raw material is subjected to the same pressure during the hot pressing molding process, thereby avoiding the situation where the local pressure is too large or too small, thereby preventing the profile from having problems such as uneven density and inconsistent thickness, and improving the dimensional accuracy and appearance quality of the profile.

[0028] The buffer mechanism 3 includes a trapezoidal slide groove 211 311 provided on the top of the hot pressing plate 211, and two trapezoidal sliders 312 are slidably connected to the inner wall of the trapezoidal slide groove 211, and the tops of the two trapezoidal sliders 312 are fixedly connected with L-shaped slide plates 313, and the tops of the two L-shaped slide plates 313 are fixedly connected with arc-shaped spring pieces 314, and the tops of the arc-shaped spring pieces 314 are in contact with the connecting plate 104. The top of the hot pressing plate 211 is fixedly connected with two U-shaped connecting plates 315, and the two L-shaped slide plates 313 are fixedly connected with sliding rods 316 on the sides away from each other. The two sliding rods 316 pass through the two U-shaped connecting plates 315 on the sides away from each other, and the two sliding rods 316 are slidably connected to the two U-shaped connecting plates 315 respectively. The outer walls of the two sliding rods 316 are sleeved with springs 317, and the two springs 317 are away from each other. One side is fixedly connected to two U-shaped connecting plates 315, and the sides of the two springs 1 317 close to each other are fixedly connected to two L-shaped slide plates 313. A plurality of dampers 318 are fixedly connected to the top of the hot pressing plate 211, and the tops of the plurality of dampers 318 are fixedly connected to the connecting plate 104. The outer walls of the plurality of dampers 318 are sleeved with springs 2 319, and the tops of the plurality of springs 2 319 are fixedly connected to the connecting plate 104, and the bottoms of the plurality of springs 2 319 are fixedly connected to the hot pressing plate 211. By setting up the buffer mechanism 3, it is possible to avoid the pressure of the hydraulic cylinder 103 being instantly and completely applied to the raw material, and to avoid problems such as local excessive extrusion, deformation or even rupture of the ultra-high molecular polyethylene material when it is not fully adapted to the pressure, which helps to ensure the integrity and quality stability of the final profile.

[0029] A specific application of this embodiment is as follows: when in use, first place the device at the corresponding position, place the raw material of the high molecular polyethylene profile in the forming mold 101, heat the hot pressing plate 211, and then start the hydraulic cylinder 103 to extend it, thereby driving the hot pressing plate 211 to move downward through the connecting plate 104. When the hot pressing plate 211 moves into the forming mold 101 and contacts the raw material, the connecting plate 104 continues to descend, and the two balancing plates 212 move away from each other at the connection between the connecting block 1 215, the connecting block 216 and the connecting rod 217 until they move to the end of the trapezoidal slide groove 1 213, thereby balancing the pressure of the hydraulic cylinder 103 on the hot pressing plate 211. When the connecting plate 104 contacts the raw material, , the descending speed of the hot pressing plate 211 will decrease, but the descending speed of the connecting plate 104 will remain unchanged, so the distance between the connecting plate 104 and the hot pressing plate 211 will gradually decrease. At this time, the hydraulic cylinder 103 will continue to apply pressure to the hot pressing plate 211 through the connecting plate 104, and this pressure will be buffered under the action of the damper 318 and the spring 2 319. At the same time, the arc-shaped spring piece 314 will also drive the two L-shaped slide plates 313 away from each other under the action of the connecting plate 104 and the hot pressing plate 211, and then make them close to the U-shaped connecting plate 315. In this process, the spring 1 317 on the slide bar 316 will also be compressed, thereby further increasing the buffering effect of the device while reducing the fatigue of the damper 318 and the spring 2 319.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A molding device for ultra-high molecular weight polyethylene profiles, characterized in that: It comprises a rectangular bottom plate (1), on which a balancing mechanism (2) and a buffer mechanism (3) are arranged; The top of the rectangular bottom plate (1) is fixedly connected to a forming mold (101), the top of the rectangular bottom plate (1) is fixedly connected to an L-shaped support frame (102), the top of the L-shaped support frame (102) is fixedly connected to a hydraulic cylinder (103), the output shaft of the hydraulic cylinder (103) passes through the L-shaped support frame (102), the output shaft of the hydraulic cylinder (103) is fixedly connected to a connecting plate (104), and the balancing mechanism (2) comprises a hot pressing plate arranged above the rectangular bottom plate (1). (211), the top of the hot pressing plate (211) is slidably connected to two balancing plates (212), the top of the rectangular bottom plate (1) is provided with a plurality of trapezoidal slide grooves (213), the inner walls of the plurality of trapezoidal slide grooves (213) are slidably connected to trapezoidal sliders (214), the tops of the plurality of trapezoidal sliders (214) are fixedly connected to the two balancing plates (212), and the tops of the two balancing plates (212) are fixedly connected to two connecting blocks (215).

2. The ultra-high molecular weight polyethylene profile molding equipment according to claim 1, characterized in that: Two connecting blocks 2 (216) are fixedly connected to the left and right sides of the connecting plate (104); a plurality of connecting blocks 2 (216) are hingedly provided with connecting rods (217) on one side away from the connecting plate (104); and the bottoms of the plurality of connecting rods (217) are respectively hingedly connected to a plurality of connecting blocks 1 (215).

3. The ultra-high molecular weight polyethylene profile molding equipment according to claim 2, characterized in that: The buffer mechanism (3) comprises a second trapezoidal slide groove (311) provided on the top of the hot pressing plate (211), and two second trapezoidal sliding blocks (312) are slidably connected to the inner wall of the second trapezoidal slide groove (311).

4. The ultra-high molecular weight polyethylene profile molding equipment according to claim 3, characterized in that: The tops of the two trapezoidal sliding blocks (312) are fixedly connected to an L-shaped sliding block (313), the tops of the two L-shaped sliding blocks (313) are fixedly connected to an arc-shaped spring sheet (314), and the tops of the arc-shaped spring sheets (314) are in contact with the connecting plate (104).

5. The ultra-high molecular weight polyethylene profile molding equipment according to claim 4, characterized in that: Two U-shaped connecting plates (315) are fixedly connected to the top of the hot pressing plate (211); the two L-shaped sliding plates (313) are fixedly connected to the sides away from each other with sliding rods (316); the two sides away from each other of the two sliding rods (316) respectively penetrate the two U-shaped connecting plates (315); and the two sliding rods (316) are slidably connected to the two U-shaped connecting plates (315) respectively.

6. The ultra-high molecular weight polyethylene profile molding equipment according to claim 5, characterized in that: A spring 1 (317) is sleeved on the outer walls of the two sliding rods (316); the sides of the two springs 1 (317) that are away from each other are fixedly connected to the two U-shaped connecting plates (315) respectively, and the sides of the two springs 1 (317) that are close to each other are fixedly connected to the two L-shaped sliding plates (313) respectively.

7. The ultra-high molecular weight polyethylene profile molding equipment according to claim 6, characterized in that: A plurality of dampers (318) are fixedly connected to the top of the hot pressing plate (211), the tops of the plurality of dampers (318) are fixedly connected to the connecting plate (104), a spring 2 (319) is sleeved on the outer wall of the plurality of dampers (318), the tops of the plurality of spring 2 (319) are fixedly connected to the connecting plate (104), and the bottoms of the plurality of spring 2 (319) are fixedly connected to the hot pressing plate (211).

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