CN113294680B

CN113294680B - Novel glass fiber reinforced plastic grating and processing device thereof

Info

Publication number: CN113294680B
Application number: CN202110601128.3A
Authority: CN
Inventors: 俞天祯
Original assignee: Shanghai Seg Composite Material Co ltd
Current assignee: Shanghai Seg Composite Material Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2022-04-26
Anticipated expiration: 2041-05-31
Also published as: CN113294680A

Abstract

The invention belongs to the technical field of glass fiber reinforced plastic grating production and processing, and particularly relates to a novel glass fiber reinforced plastic grating and a processing device thereof. On the basis of the traditional glass fiber reinforced plastic grating, the anti-skid composite layer is additionally arranged on the surface layer, so that the anti-skid performance of the glass fiber reinforced plastic grating is improved, and the surface wear resistance is improved, so that the service life is prolonged.

Description

Novel glass fiber reinforced plastic grating and processing device thereof

Technical Field

The invention belongs to the technical field of production and processing of glass fiber reinforced plastic gratings, and particularly relates to a novel glass fiber reinforced plastic grating and a processing device thereof.

Background

The glass fiber reinforced plastic grating is a latticed plate made of glass fiber reinforced plastic, has the characteristics of light weight, high strength, wear resistance, corrosion resistance and the like, and is widely applied to the fields of construction of working platforms, paving of sewer cover plates and the like. However, the glass fiber reinforced plastic grid in the prior art is single in material and poor in surface anti-skid effect.

Disclosure of Invention

The invention aims to provide a novel glass fiber reinforced plastic grating which can improve the surface anti-skid performance of the existing glass fiber reinforced plastic grating.

The technical scheme adopted by the invention is as follows:

the utility model provides a novel glass steel grating, includes the latticed body that glass steel made, be equipped with the skid resistant course on the top surface of latticed body, be close to the skid resistant course on each grid wall of latticed body and be provided with the through-hole that runs through the grid wall, the skid resistant course extends to each grid wall both sides, and the skid resistant course of each grid wall both sides extends to in the through-hole and as an organic whole in the through-hole interconnection.

The anti-slip layer is prepared by the following method: firstly, the latticed body is processed and molded separately, then the latticed body is used as an insert to be placed in an anti-skid layer injection mold, and the anti-skid layer is attached to the surface of the latticed body by an injection molding method.

The forming method of the grid-shaped body comprises the following steps: firstly, injecting thermosetting plastic resin into a cavity of a glass fiber reinforced plastic grid mold, filling at least one layer of glass fiber at the bottom of the cavity, then placing a core-pulling block for molding the through hole into the cavity above the filled glass fiber, continuously filling the glass fiber upwards until the cavity is filled, then heating the plastic resin by the mold, pulling out the core-pulling block from the cavity after the plastic resin is cured, and finally demolding to form a latticed body directly provided with the through hole.

The glass fiber reinforced plastic grid die comprises a die plate internally provided with a heating element, the die plate is fixedly connected with a rack, a latticed cavity is formed in the die plate, a latticed unloading frame is arranged at the bottom of the latticed cavity and movably arranged in the latticed cavity along the vertical direction, the latticed cavity separates the die plate into a plurality of die cores arranged in an array mode, and core-pulling blocks which are respectively arranged along the normal direction of the two side walls in a telescopic mode are arranged on at least two opposite or adjacent side walls of the die cores.

The core-pulling blocks are arranged on two opposite side walls of the mold cores, and the axial directions of the core-pulling blocks on any two adjacent mold cores are mutually vertical.

The core pulling block comprises a cylindrical core rod and a sliding block fixedly connected with the core rod, the sliding block is arranged inside the mold core in a sliding mode along the horizontal direction, the driving block is movably arranged inside the mold core along the vertical direction, the driving block and the sliding block form wedge transmission fit, the driving block and the sliding block are assembled to be capable of driving the core rod to stretch into the latticed cavity in a protruding mode and abut against the side wall of the adjacent mold core when the driving block goes upwards, and the driving block can be driven to be pulled out from the latticed cavity when the driving block goes downwards and enable the end portion of the core rod to be flush with the side wall of the mold core where the core rod is located.

The glass fiber reinforced plastic grille mould also comprises a first driving plate, a second driving plate and a third driving plate which are positioned below the mould plate, wherein the second driving plate is positioned above the first driving plate, the third driving plate is positioned below the first driving plate, the first driving plate is fixedly connected with a driving element vertically arranged on the rack, the second driving plate is fixedly connected with the discharging frame, and the third driving plate is fixedly connected with a driving block in each mould core; the first driving plate is sequentially provided with a first station, a second station and a third station from bottom to top along the moving direction, a linkage mechanism is arranged between the first driving plate and the third driving plate, the linkage mechanism is assembled to be capable of driving the core bar to protrude into the latticed cavity when the first driving plate moves from the first station to the second station, and the first driving plate can drive the core bar to be pulled out from the latticed cavity when the first driving plate moves from the second station to the third station.

The linkage mechanism comprises a sliding seat which is connected with the rack in a sliding mode along the horizontal direction, a vertical transmission member is arranged between the sliding seat and the third driving plate, and the vertical transmission member is assembled to be capable of converting the horizontal motion of the sliding seat into the vertical motion of the third driving plate; the link gear still includes the guide pin with the relative rigid coupling of first drive plate, be equipped with the guide slot with guide pin matched with on the slide, the guide slot has first rake, vertical portion and the second rake that from bottom to top communicates in proper order, the incline direction of first rake and second rake is opposite, can drive the translation of slide to a direction when the guide pin passes through first rake from bottom to top, this translation direction can drive the third drive plate and go upward, the slide keeps static when the guide pin passes through vertical portion, can drive the translation of slide to another direction when the guide pin passes through the second rake from bottom to top, this translation direction can drive the third drive plate and go downward.

The driving element is a piston cylinder, a cylinder body of the piston cylinder is fixedly connected with the rack, a piston rod of the piston cylinder is fixedly connected with the first driving plate, and the guide pin is fixed on the piston rod.

The utility model provides a novel glass steel grating's processingequipment for the integral type shaping of latticed body and through-hole, including glass steel grating mould, glass steel grating mould is including the template that embeds there is heating element, template and frame rigid coupling, latticed die cavity has been seted up on the template, and latticed die cavity bottom is equipped with latticed discharge frame, and latticed discharge frame sets up at latticed die cavity along vertical direction activity, and latticed die cavity separates the template for the mold core that a plurality of arrays were arranged, is equipped with the core piece of taking out that the normal direction that follows this both sides wall respectively on two at least relative or adjacent lateral walls of mold core stretches out and draws back the setting.

The invention has the technical effects that: on the basis of the traditional glass fiber reinforced plastic grating, the anti-skid composite layer is additionally arranged on the surface layer, so that the anti-skid performance of the glass fiber reinforced plastic grating is improved, and the surface wear resistance is improved, so that the service life is prolonged.

Drawings

FIG. 1 is a partial perspective view of a novel fiberglass reinforced plastic grid provided by an embodiment of the present invention;

FIG. 2 is an exploded view of a novel fiberglass grid provided by an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a novel fiberglass grid provided by an embodiment of the present invention;

FIG. 4 is a schematic diagram of the formation of a novel glass fiber reinforced plastic grid provided by an embodiment of the present invention;

FIG. 5 is a schematic partial perspective view of a GRP grid mold provided in accordance with an embodiment of the present invention;

FIG. 6 is a top view of a template provided by an embodiment of the present invention;

FIG. 7 is a cross-sectional view of the upper half of a GRP mold provided by an embodiment of the present invention;

FIG. 8 is a cross-sectional view of the lower half of a GRP grid mold provided in accordance with an embodiment of the present invention;

FIG. 9 is a bottom perspective view of a template provided by an embodiment of the present invention;

FIG. 10 is a schematic view of a driving block mounting structure provided in an embodiment of the present invention;

FIG. 11 is a schematic view of a discharge frame mounting structure provided in accordance with an embodiment of the present invention;

FIG. 12 is a schematic view of a three-dimensional cutting structure of a mold core provided by an embodiment of the invention;

FIG. 13 is an exploded view of a portion of the components of a linkage mechanism provided by an embodiment of the present invention.

Detailed Description

In order that the objects and advantages of the invention will be more clearly understood, the following description is given in conjunction with the accompanying examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed. It should be noted that, in the present invention, the "top surface" refers to a surface of the glass fiber reinforced plastic grid which faces upward when actually laid.

As shown in fig. 1-3, a novel glass fiber reinforced plastic grid comprises a grid body 10 made of glass fiber reinforced plastic, an anti-slip layer 11 is arranged on the top surface of the grid body 10, through holes 12 penetrating through the grid walls are arranged on each grid wall of the grid body 10 near the anti-slip layer 11, the anti-slip layer 11 extends to both sides of each grid wall, and the anti-slip layers 11 on both sides of each grid wall extend into the through holes 12 and are connected into a whole in the through holes 12. On the basis of the traditional glass fiber reinforced plastic grating, the anti-skid composite layer is additionally arranged on the surface layer, so that the anti-skid performance of the glass fiber reinforced plastic grating is improved, and the surface wear resistance is improved, so that the service life is prolonged, and the material of the anti-skid layer 11 can be selected in the prior art and is generally rubber.

Preferably, as shown in fig. 4, the anti-slip layer 11 is prepared by the following method: firstly, the grid-shaped body 10 is processed and molded separately, then the grid-shaped body 10 is used as an insert to be placed in an injection mold 30 of the anti-slip layer 11, and the anti-slip layer 11 is attached to the surface of the grid-shaped body 10 by adopting an injection molding method. In the embodiment, in order to facilitate parting and demolding of the injection mold 30 and to facilitate the anti-slip layer 11 to fully fill the through holes 12, the stepped portion is provided at the upper end of the grid-shaped body 10, and the side wall of the anti-slip layer 11 is just flush with the side wall of the grid-shaped body 10 after injection molding, as shown in fig. 3.

Preferably, as shown in fig. 7, the method for forming the grid-shaped body 10 includes: firstly, injecting thermosetting plastic resin into a cavity 211 of a glass fiber reinforced plastic grid mold, filling at least one layer of glass fiber at the bottom of the cavity 211, then placing a core-pulling block 22 for molding the through hole 12 in the cavity 211 above the filled glass fiber, then continuously filling the glass fiber upwards until the cavity 211 is filled, then heating the plastic resin by the mold, pulling out the core-pulling block 22 from the cavity 211 after the plastic resin is cured, and finally demolding to form the latticed body 10 directly provided with the through hole 12. When the through holes 12 are machined, a machining mode of forming before drilling is not adopted, the reason is that the through holes 12 on the latticed body 10 are distributed densely, the later-stage drilling mode is not convenient to machine, and the internal glass fibers are broken during drilling, so that the overall structural strength of the glass fiber reinforced plastic grid is influenced.

Specifically, as shown in fig. 5, the glass fiber reinforced plastic grid mold includes a mold plate 21 with a built-in heating element, the mold plate 21 is fixedly connected to a frame 20, a grid-shaped cavity 211 is formed in the mold plate 21, a grid-shaped discharging frame 23 is arranged at the bottom of the grid-shaped cavity 211, the grid-shaped discharging frame 23 is movably arranged in the grid-shaped cavity 211 along the vertical direction, the grid-shaped cavity 211 divides the mold plate 21 into a plurality of mold cores 212 arranged in an array, and core pulling blocks 22 respectively arranged in a telescopic manner along the normal direction of the two side walls are arranged on at least two opposite or adjacent side walls of the mold cores 212. In the embodiment shown in the drawings, the core-pulling blocks 22 are arranged on two opposite side walls of the mold core 212, and the axial directions of the core-pulling blocks 22 on any two adjacent mold cores 212 are perpendicular to each other, as shown in fig. 6, so that the number of the core-pulling blocks 22 can be reduced to the maximum extent while ensuring that the through holes 12 are formed on each grid side wall, thereby simplifying the equipment structure, but the technical scheme of the present invention is not limited to the above embodiment, for example, the core-pulling blocks 22 may be arranged on two adjacent side walls of the mold core 212, and then the mold cores 212 are arranged in a fish scale arrangement manner, so that the through holes 12 are formed on each grid side wall.

Preferably, as shown in fig. 7 and 12, the core block 22 includes a cylindrical core bar 221 and a slider 222 fixedly connected to the core bar 221, the slider 222 is slidably disposed inside the mold core 212 in the horizontal direction, a driving block 223 movably disposed inside the mold core 212 in the vertical direction is further disposed inside the mold core 212, the driving block 223 and the slider 222 form a wedge transmission fit, and the driving block 223 and the slider 222 are assembled to drive the core bar 221 to protrude into the grid-shaped cavity 211 and abut against the side wall of the adjacent mold core 212 when the driving block 223 moves upward, and drive the core bar 221 to withdraw from the grid-shaped cavity 211 and make the end of the core bar 221 flush with the side wall of the mold core 212 where the core bar 221 is located when the driving block 223 moves downward.

Further, as shown in fig. 8-11, the glass fiber reinforced plastic grille mold further includes a first driving plate 24, a second driving plate 25 and a third driving plate 26 located below the mold plate 21, the second driving plate 25 is located above the first driving plate 24, the third driving plate 26 is located below the first driving plate 24, wherein the first driving plate 24 is fixedly connected to a driving element 28 vertically arranged on the frame 20, the second driving plate 25 is fixedly connected to the discharging frame 23, and the third driving plate 26 is fixedly connected to a driving block 223 in each mold core 212; a pressure spring 251 for driving the second drive plate 25 and the first drive plate 24 to be separated from each other and a limiting rod 252 for limiting the maximum separation distance between the second drive plate 25 and the first drive plate 24 are arranged between the second drive plate 25 and the first drive plate 24, the first drive plate 24 sequentially comprises a first station, a second station and a third station from bottom to top along the moving direction, a linkage mechanism is arranged between the first drive plate 24 and the third drive plate 26, and the linkage mechanism is assembled to be capable of driving the core rod 221 to protrude into the latticed cavity 211 when the first drive plate 24 moves from the first station to the second station and capable of driving the core rod 221 to be pulled out from the latticed cavity 211 when the first drive plate 24 moves from the second station to the third station.

Specifically, as shown in fig. 8 and 13, the linkage mechanism includes a sliding seat 27 slidably connected to the frame 20 along a horizontal direction, a vertical transmission member 272 is disposed between the sliding seat 27 and the third driving plate 26, the vertical transmission member 272 is configured to convert a horizontal motion of the sliding seat 27 into a vertical motion of the third driving plate 26, in the embodiment shown in the drawings, the vertical transmission member 272 includes an inclined kidney-shaped slot disposed on the third driving plate 26 and a pin disposed on the sliding seat 27, and other vertical transmission structures such as a wedge may be adopted besides this embodiment; the linkage mechanism further comprises a guide pin 241 fixedly connected with the first driving plate 24, a guide groove 271 matched with the guide pin 241 is arranged on the slide seat 27, the guide groove 271 is provided with a first inclined part, a vertical part and a second inclined part which are sequentially communicated from bottom to top, the inclination directions of the first inclined part and the second inclined part are opposite, the slide seat 27 can be driven to translate towards one direction when the guide pin 241 passes through the first inclined part from bottom to top, the translation direction can drive the third driving plate 26 to move upwards, the slide seat 27 is kept static when the guide pin 241 passes through the vertical part, the slide seat 27 can be driven to translate towards the other direction when the guide pin 241 passes through the second inclined part from bottom to top, and the translation direction can drive the third driving plate 26 to move downwards.

Preferably, the driving element 28 is a piston cylinder, a cylinder body of the piston cylinder is fixedly connected with the frame 20, a piston rod of the piston cylinder is fixedly connected with the first driving plate 24, and the guide pin 241 is fixed on the piston rod.

The specific working process and working principle of the glass fiber reinforced plastic grating mold are as follows: firstly, adjusting the mold to an initial state, as shown in fig. 7, injecting plastic grease into the cavity 211, then laying a layer of glass fibers at the bottom of the cavity 211 in a criss-cross manner, wherein the core rod 221 is in a shrinkage state, so that the laying of the glass fibers is not interfered, and at the same time, the discharging frame 23 is located at the lowest position, the height of the bottom glass fibers is lower than that of the core rod 221, after the laying of the bottom glass fibers is finished, controlling the first driving plate 24 to move from the first station to the second station, so that the core rod 221 protrudes into the cavity 211, at the same time, the discharging frame 23 moves upwards for a certain distance, pressing the glass fibers between the core rod 221 and the discharging frame 23, then laying the subsequent glass fibers, after the laying of the glass fibers is finished, the mold heats the plastic grease to be solidified and molded, the first driving plate 24 moves upwards again after molding, at this time, the latticed body 10 is blocked by the core rod 221, therefore, the discharging frame 23 does not move upwards for the first time but compresses the compression spring 251, after the first driving plate 24 moves to the third station, the core bar 221 is pulled out from the through hole 12, at this time, the latticed body 10 moves upwards under the extrusion pushing action of the discharging frame 23 to realize demoulding, and the processing of the latticed body 10 is completed. The invention realizes the linkage design of the core pulling mechanism and the demoulding mechanism, can sequentially realize the ejection and the contraction of the core bar 221 in the ascending process of the discharging frame 23, simplifies the equipment structure to the maximum extent and reduces the equipment cost.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.

Claims

1. A glass fiber reinforced plastic grid is characterized in that: the anti-skid net comprises a latticed body (10) made of glass fiber reinforced plastic, wherein an anti-skid layer (11) is arranged on the top surface of the latticed body (10), through holes (12) penetrating through the latticed walls are formed in each latticed wall of the latticed body (10) close to the anti-skid layer (11), the anti-skid layer (11) extends to two sides of each latticed wall, and the anti-skid layers (11) on the two sides of each latticed wall extend into the through holes (12) and are connected into a whole in the through holes (12); the anti-slip layer (11) is prepared by the following method: firstly, independently processing and molding the latticed body (10), then placing the latticed body (10) as an insert in an injection mold (30) of an anti-slip layer (11), and attaching the anti-slip layer (11) to the surface of the latticed body (10) by adopting an injection molding method; the forming method of the grid-shaped body (10) comprises the following steps: firstly, injecting thermosetting plastic resin into a cavity (211) of a glass fiber reinforced plastic grid die, filling at least one layer of glass fiber at the bottom of the cavity (211), then putting a core-pulling block (22) for forming the through hole (12) into the cavity (211) above the filled glass fiber, continuously filling the glass fiber upwards until the cavity (211) is filled, then heating the plastic resin by the die, pulling the core-pulling block (22) out of the cavity (211) after the plastic resin is cured, and finally demoulding to form the latticed body (10) directly provided with the through hole (12).

2. A glass reinforced plastic grid according to claim 1, wherein: the glass fiber reinforced plastic grid die comprises a die plate (21) internally provided with a heating element, the die plate (21) is fixedly connected with a rack (20), a latticed cavity (211) is formed in the die plate (21), a latticed discharging frame (23) is arranged at the bottom of the latticed cavity (211), the latticed discharging frame (23) is movably arranged in the latticed cavity (211) along the vertical direction, the latticed cavity (211) separates the die plate (21) into a plurality of die cores (212) arranged in an array mode, and at least two opposite or adjacent side walls of the die cores (212) are provided with core-pulling blocks (22) which are respectively arranged in a telescopic mode along the normal direction of the two side walls.

3. A glass reinforced plastic grid according to claim 2, wherein: the core-pulling blocks (22) are arranged on two opposite side walls of the mold cores (212), and the axial directions of the core-pulling blocks (22) on any two adjacent mold cores (212) are mutually vertical.

4. A glass reinforced plastic grid according to claim 3, wherein: the core-pulling block (22) comprises a cylindrical core rod (221) and a sliding block (222) fixedly connected with the core rod (221), the sliding block (222) is arranged inside the mold core (212) in a sliding mode along the horizontal direction, a driving block (223) is movably arranged inside the mold core (212) along the vertical direction, the driving block (223) and the sliding block (222) form wedge transmission fit, the driving block (223) and the sliding block (222) are assembled in a mode that the core rod (221) can be driven to protrude into the latticed cavity (211) and abut against the side wall of the adjacent mold core (212) when the driving block (223) moves upwards, and the core rod (221) can be driven to be pulled out of the latticed cavity (211) when the driving block (223) moves downwards to enable the end portion of the core rod (221) to be flush with the side wall of the mold core (212) where the core rod is located.

5. A glass reinforced plastic grid according to claim 4, wherein: the glass fiber reinforced plastic grating mold further comprises a first driving plate (24), a second driving plate (25) and a third driving plate (26), wherein the first driving plate (24), the second driving plate (25) and the third driving plate (26) are located below the template (21), the second driving plate (25) is located above the first driving plate (24), the third driving plate (26) is located below the first driving plate (24), the first driving plate (24) is fixedly connected with a driving element (28) vertically arranged on the rack (20), the second driving plate (25) is fixedly connected with the discharging frame (23), and the third driving plate (26) is fixedly connected with driving blocks (223) in the mold cores (212); a pressure spring (251) used for driving the second driving plate (25) and the first driving plate (24) to be separated from each other and a limiting rod (252) used for limiting the maximum separation distance between the second driving plate and the first driving plate are arranged between the second driving plate (25) and the first driving plate (24), the first driving plate (24) is sequentially provided with a first station, a second station and a third station from bottom to top along the moving direction, a linkage mechanism is arranged between the first driving plate (24) and the third driving plate (26), the linkage mechanism is assembled to be capable of driving the core rod (221) to protrude into the latticed cavity (211) when the first driving plate (24) moves from the first station to the second station, and the core rod (221) can be driven to be pulled out of the latticed cavity (211) when the first driving plate (24) moves from the second station to the third station.

6. A glass reinforced plastic grid according to claim 5, wherein: the linkage mechanism comprises a sliding seat (27) which is connected with the rack (20) in a sliding mode in the horizontal direction, a vertical transmission member (272) is arranged between the sliding seat (27) and the third driving plate (26), and the vertical transmission member (272) is assembled to be capable of converting the horizontal motion of the sliding seat (27) into the vertical motion of the third driving plate (26); the linkage mechanism further comprises a guide pin (241) fixedly connected with the first driving plate (24) relatively, a guide groove (271) matched with the guide pin (241) is arranged on the sliding seat (27), the guide groove (271) is provided with a first inclined part, a vertical part and a second inclined part which are sequentially communicated from bottom to top, the inclined directions of the first inclined part and the second inclined part are opposite, when the guide pin (241) passes through the first inclined part from bottom to top, the sliding seat (27) can be driven to translate towards one direction, the translating direction can drive the third driving plate (26) to move upwards, when the guide pin (241) passes through the vertical part, the sliding seat (27) is kept static, when the guide pin (241) passes through the second inclined part from bottom to top, the sliding seat (27) can be driven to translate towards the other direction, and the translating direction can drive the third driving plate (26) to move downwards.

7. A glass reinforced plastic grid according to claim 6, wherein: the driving element (28) is a piston cylinder, a cylinder body of the piston cylinder is fixedly connected with the rack (20), a piston rod of the piston cylinder is fixedly connected with the first driving plate (24), and the guide pin (241) is fixed on the piston rod.

8. A processing device for a glass fiber reinforced plastic grid as claimed in claim 1, which is used for integrally forming the grid-shaped body (10) and the through holes (12), and is characterized in that: including glass steel grating mould, glass steel grating mould is including built-in template (21) that has heating element, template (21) and frame (20) rigid coupling, latticed die cavity (211) have been seted up on template (21), latticed die cavity (211) bottom is equipped with latticed discharge frame (23), and latticed discharge frame (23) set up in latticed die cavity (211) along vertical direction activity, and latticed die cavity (211) are separated template (21) for mold core (212) that a plurality of arrays were arranged, are equipped with respectively on two at least relative or adjacent lateral walls of mold core (212) and follow the flexible core pulling block (22) that set up of normal direction of this both sides wall.