Hydraulic machine for glass fiber reinforced plastic pultrusion

Abstract

This invention discloses a hydraulic press for fiberglass pultrusion molding, comprising a support base, a worktable, and a lower pressure block. The support base has four sets of columns, and the worktable is positioned between these four sets of columns. A grid mold is located at the center of the worktable, and a collection trough is provided on the outer side of the grid mold. The collection trough contains four symmetrically arranged collection ports. A connecting pipe is connected to the bottom of each collection port, and a recycling box is connected to the end of the connecting pipe furthest from the collection port. Connecting beams are connected to the four sets of columns, and hydraulic cylinders are connected to the top of each connecting beam. A connecting pressure block is connected to the bottom of the connecting beam, and a stamping die is connected to the bottom of the lower pressure block. This allows for the recycling of overflowing material and the separation of the overflowing portion from the fiberglass grating, saving work steps and reducing production costs.

Description

Technical Field

[0001] This invention relates to the field of fiberglass grating production technology, specifically to a hydraulic press for fiberglass pultrusion molding. Background Technology

[0002] Fiberglass grating, also known as fiberglass grating, is a plate-like material with many open spaces, made of glass fiber as reinforcement and unsaturated polyester resin as matrix, through special processing and composite. The production of fiberglass grating requires molding.

[0003] The application number CN201921334309.9 was found, which is a fiberglass molded grating production equipment that facilitates grating production, thereby reducing the need for manual operation and improving the work efficiency of grating production.

[0004] Similar to the aforementioned fiberglass molded grating production equipment, although it facilitates grating production, thereby reducing manual operation and improving grating production efficiency, it lacks a device for cutting the holes of the fiberglass grating. Because excess material overflows onto the mold during pultrusion and stamping, the excess adhesive portion of the fiberglass grating needs to be cut off in time. Otherwise, additional trimming steps will be required later. Furthermore, it lacks a device for recycling the overflowing material, which may increase workload and cause material waste during subsequent cleanup.

[0005] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and proposed a hydraulic press for fiberglass pultrusion molding to achieve a more practical purpose. Summary of the Invention

[0006] The purpose of this invention is to provide a hydraulic press for fiberglass pultrusion molding, to solve the problem mentioned in the background art that the aforementioned fiberglass molding grating production equipment does not have a device for cutting the holes of the fiberglass grating. Because excess material of the fiberglass grating overflows onto the mold during pultrusion, it is necessary to cut off the excess part of the fiberglass grating in time. Otherwise, a trimming step will be required later. Moreover, it does not have a device for recycling the overflowing material, which may increase the workload and cause material waste in the subsequent cleaning.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic press for fiberglass pultrusion molding, comprising a support base, a worktable, and a lower pressure block. The support base is provided with four sets of columns, and the worktable is positioned between the four sets of columns. A grid mold is located at the center of the worktable. A collection trough is provided on the outer side of the grid mold, and four sets of symmetrically arranged collection ports are provided within the collection trough. A connecting pipe is connected to the bottom of each collection port, and a recycling box is connected to the end of the connecting pipe furthest from the collection port. Connecting beams are connected to the four sets of columns, and hydraulic cylinders are connected to the top of the connecting beams. A connecting pressure block is connected to the bottom of the connecting beams, and a lower pressure block is connected to the bottom of the connecting pressure block. A stamping die is connected to the bottom of the lower pressure block.

[0008] Preferably, the workbench is connected to the support base frame, and the highest point of the workbench grid mold is higher than the highest point of the collection trough. Multiple sets of mold protrusions are evenly arranged inside the grid mold, and mold grooves are provided between the grid mold and the mold protrusions.

[0009] Preferably, the stamping die is located directly above the grid die, the bottom of the stamping die is provided with multiple sets of stamping grooves, and there is a stamping protrusion between the stamping die and the stamping grooves. The stamping grooves and the die protrusions are interlocked, and the stamping protrusions and the die grooves are interlocked.

[0010] Preferably, a connecting groove is provided at the connection between the stamping groove and the stamping protrusion, and a cutting blade is provided in the connecting groove, with a connecting spring post provided on the side of the cutting blade near the stamping groove.

[0011] Preferably, two sets of adjusting slide grooves are provided on both sides of the lower pressing block, and a fixing knob is connected in the adjusting slide groove. A connecting bolt is connected in the fixing knob, and the connecting bolt is connected to the stamping die.

[0012] Compared with the prior art, the beneficial effects of the present invention are: it can recycle spilled material and separate the spilled part from the fiberglass grating, saving working steps and reducing production costs. The specific details are as follows:

[0013] The hydraulic cylinder drives the connecting beam to move up and down along the column direction, thereby causing the connecting pressure block connected to the connecting beam and the stamping die connected to its bottom to descend. This causes the stamping die to stamp and pull the grid die on the worktable. When the stamping die is stamping and pulling the grid die on the worktable, the stamping groove and the die protrusion, as well as the stamping protrusion and the die groove, interlock and extrude to form the grid. During the extrusion process, the cutting blade descends with the stamping die, and during the descent, it separates the excess material overflowing on the die protrusion from the fiberglass grating formed at the die groove. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the side cross-section of the main body of a hydraulic press for fiberglass pultrusion molding according to the present invention;

[0015] Figure 2 This is a top view of the worktable of a hydraulic press for fiberglass pultrusion molding according to the present invention.

[0016] Figure 3 This is a bottom view of the structure of a stamping die for a hydraulic press used in fiberglass pultrusion molding according to the present invention;

[0017] Figure 4 This invention relates to a hydraulic press for fiberglass pultrusion molding. Figure 3 Enlarged view of point A in the middle;

[0018] Figure 5 This is a schematic diagram of the structure of a cutting blade for a hydraulic press used in fiberglass pultrusion molding according to the present invention;

[0019] Figure 6 This is a schematic diagram of the structure for adjusting the lower pressure block of a hydraulic press for fiberglass pultrusion molding according to the present invention;

[0020] Figure 7 This is a schematic diagram of the structure for fixing the lower pressure block of a hydraulic press for fiberglass pultrusion molding according to the present invention.

[0021] In the diagram: 1. Support frame; 2. Column; 3. Workbench; 31. Grille mold; 311. Mold groove; 312. Mold protrusion; 32. Collection trough; 321. Collection port; 322. Connecting pipe; 323. Recycling box; 4. Connecting beam; 5. Hydraulic cylinder; 6. Connecting pressure block; 7. Lower pressure block; 71. Stamping mold; 711. Stamping protrusion; 712. Stamping groove; 713. Cutting blade; 714. Connecting groove; 715. Connecting spring column; 72. Adjusting slide; 73. Fixing knob; 74. Connecting bolt. Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1 to 7This invention provides a technical solution: a hydraulic press for fiberglass pultrusion molding, comprising a support base 1, a worktable 3, and a lower pressure block 7. Four sets of columns 2 are mounted on the support base 1, and the worktable 3 is positioned between the four sets of columns 2. A grid mold 31 is located at the center of the worktable 3. A collection trough 32 is located on the outer side of the grid mold 31, and four symmetrical collection ports 321 are located within the collection trough 32. A connecting pipe 322 is connected to the bottom of each collection port 321, and a recycling box 323 is connected to the end of the connecting pipe 322 furthest from the collection port 321. A connecting beam 4 is connected to the four sets of columns 2, and a hydraulic cylinder 5 is connected to the top of the connecting beam 4. A connecting pressure block 7 is connected to the bottom of the connecting beam 4. Block 6, and the lower pressing block 7 is connected to the bottom of the connecting pressing block 6. The bottom of the lower pressing block 7 is connected to the stamping die 71. The hydraulic cylinder 5 drives the connecting beam 4 to move up and down along the column 2, thereby driving the connecting pressing block 6 connected to the connecting beam 4 and the stamping die 71 connected to its bottom to descend, so that the stamping die 71 stamps and pulls the grid die 31 on the worktable 3, so that the resin and glass fiber fused raw material in the grid die 31 is formed. During the stamping and pulling process, the overflowing raw material will flow into the collection tank 32 and into the collection port 321 along the collection tank 32. Then, it flows into the recycling box 323 through the connecting pipe 322 at the bottom of the collection port 321, and then the raw material is recycled through the recycling box 323.

[0024] The workbench 3 is connected to the support base 1, and the highest point of the grid mold 31 on the workbench 3 is higher than the highest point of the collection tank 32. Multiple sets of mold protrusions 312 are evenly arranged inside the grid mold 31, and mold grooves 311 are provided between the grid mold 31 and the mold protrusions 312. The stamping mold 71 is located directly above the grid mold 31. Multiple sets of stamping grooves 712 are provided at the bottom of the stamping mold 71, and stamping protrusions 711 are provided between the stamping mold 71 and the stamping grooves 712. The stamping grooves 712 and mold protrusions 312 fit together, and the stamping protrusions 711 and mold grooves 311 fit together. A connecting groove 714 is provided at the connection point between the stamping grooves 712 and the stamping protrusions 711, and the connecting groove 714 contains… A cutting blade 713 is provided, and a connecting spring post 715 is provided on the side of the cutting blade 713 near the stamping groove 712. When the stamping die 71 stamps and pulls the grid die 31 on the worktable 3, the stamping groove 712 and the die protrusion 312 and the stamping protrusion 711 and the die groove 311 interlock and are extruded. During the extrusion process, the cutting blade 713 descends with the stamping die 71, and during the descent, the excess material overflowing on the die protrusion 312 is separated from the fiberglass grid plate formed at the die groove 311. When cutting, the cutting blade 713 retracts into the connecting groove 714 by pressing the connecting spring post 715 to prevent the impact force from damaging the blade.

[0025] Two sets of adjusting slides 72 are provided on both sides of the lower pressure block 7, and a fixing knob 73 is connected in the adjusting slide 72. A connecting bolt 74 is connected in the fixing knob 73, and the connecting bolt 74 is connected to the stamping die 71. The thickness of the produced fiberglass grating can be adjusted by adjusting the height of the lowering of the stamping die 71. By rotating the fixing knob 73, the fixing knob 73 moves on the connecting bolt 74 and away from the lower pressure block 7, thereby loosening the stamping die 71 in the lower pressure block 7. By moving the stamping die 71, the vertical distance between the stamping die 71 and the grating die 31 can be changed. When the appropriate height is adjusted, the fixing knob 73 can be rotated again to make the fixing knob 73 close to the lower pressure block 7, thus completing the fixation of the stamping die 71.

[0026] Working Principle: When using a hydraulic press for fiberglass pultrusion molding, firstly, the height of the stamping die 71 is adjusted according to the thickness of the fiberglass grating to be produced. By rotating the fixing knob 73, the fixing knob 73 moves on the connecting bolt 74 and away from the lower pressure block 7, thereby loosening the stamping die 71 within the lower pressure block 7. By moving the stamping die 71, the vertical distance between the stamping die 71 and the grating mold 31 is changed. When the appropriate height is reached, the fixing knob 73 can be rotated again to make the fixing knob 73 tightly adhere to the lower pressure block 7, thus fixing the stamping die 71. Then, the raw material, which is a fusion of resin and glass fiber, is poured into the grating mold 31. When the raw material flows into the mold groove 311, the hydraulic press is started to perform the stamping pultrusion molding process.

[0027] The hydraulic cylinder 5 drives the connecting beam 4 to move up and down along the column 2, thereby causing the connecting pressure block 6 connected to the connecting beam 4 and the stamping die 71 connected to its bottom to descend. The stamping die 71 stamps and pulls the grid die 31 on the worktable 3. When the stamping die 71 stamps and pulls the grid die 31 on the worktable 3, the stamping groove 712 and the die protrusion 312 and the stamping protrusion 711 and the die groove 311 interlock and extrude to form the shape. During the extrusion process, the cutting blade 713 descends with the stamping die 71. During the descent, the excess material overflowing on the die protrusion 312 is separated from the fiberglass grating formed at the die groove 311. During the stamping and pulling process, the overflowing raw material flows into the collection trough 32 and into the collection port 321. It then flows into the recycling box 323 through the connecting pipe 322 at the bottom of the collection port 321, and is then recycled through the recycling box 323.

Claims

1. A hydraulic press for fiberglass pultrusion molding, comprising a support base (1), a worktable (3), and a lower pressure block (7), characterized in that: The support frame (1) is provided with four sets of columns (2), and the workbench (3) is located between the four sets of columns (2). A grid mold (31) is provided at the center of the workbench (3). A collection trough (32) is provided on the outside of the grid mold (31). Four sets of symmetrical collection ports (321) are provided in the collection trough (32). A connecting pipe (322) is connected to the bottom of the collection port (321). A recycling box (323) is connected to the end of the connecting pipe (322) away from the collection port (321). A connecting beam (4) is connected to the four sets of columns (2). A hydraulic cylinder (5) is connected to the top of the connecting beam (4). A connecting pressure block (6) is connected to the bottom of the connecting beam (4). A lower pressure block (7) is connected to the bottom of the connecting pressure block (6). A stamping mold (71) is connected to the bottom of the lower pressure block (7). The workbench (3) is connected to the support base frame (1), and the highest point of the grid mold (31) of the workbench (3) is higher than the highest point of the collection tank (32). Multiple sets of mold protrusions (312) are evenly arranged in the grid mold (31), and a mold groove (311) is provided between the grid mold (31) and the mold protrusions (312). The stamping die (71) is located directly above the grid die (31). The bottom of the stamping die (71) is provided with multiple sets of stamping grooves (712), and a stamping protrusion (711) is provided between the stamping die (71) and the stamping grooves (712). The stamping grooves (712) and the die protrusions (312) are fitted together. The stamping protrusions (711) and the die grooves (311) are fitted together. A connecting groove (714) is provided at the connection between the stamping grooves (712) and the stamping protrusions (711). A cutting blade (713) is provided in the connecting groove (714). A connecting spring post (715) is provided on the side of the cutting blade (713) near the stamping groove (712). Two sets of adjusting slides (72) are provided on both sides of the lower pressing block (7), and a fixed knob (73) is connected in the adjusting slide (72). A connecting bolt (74) is connected in the fixed knob (73), and the connecting bolt (74) is connected to the stamping die (71).

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