A double-station rapid demoulding device for glass fiber reinforced plastic production and its implementation method

Abstract

The present invention discloses a double-station rapid demoulding device for glass fiber reinforced plastic production and an implementation method thereof. The double-station rapid demoulding device includes a glass fiber reinforced plastic pipe and a forming roller mold. A bracket is provided below the glass fiber reinforced plastic pipe to provide support for the same. The bottom end of the bracket is provided with a rail wheel that can be displaced along the length direction of a rail groove provided in a base. The two ends of the forming roller mold protrude outward relative to the glass fiber reinforced plastic pipe, and a sling is provided on the outer side of the protruding portion. The forming roller mold is composed of a split roller portion, a connecting seat, a wedge plate, and a positioning screw. The split roller portion includes a roller body, the outer side of the roller body is provided with a first arc surface, the inner side is provided with a second arc surface, and the first and second arc surfaces are symmetrically connected on both sides with a first straight edge portion, a second straight edge portion, and a beveled edge portion. The present invention designs the forming roller mold as a combined structure. The demoulding is based on a double-station operation. This can avoid friction between the glass fiber reinforced plastic pipe and the forming roller mold during demoulding, effectively ensuring the forming quality of the glass fiber reinforced plastic pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of glass fiber reinforced plastic production and processing, and in particular to a double-station rapid demoulding device for glass fiber reinforced plastic production and an implementation method thereof. Background Art

[0002] FRP pipe, also known as fiberglass-wound sand-filled pipe, is primarily reinforced with glass fiber and its products, based on polymeric unsaturated polyester resins and epoxy resins, and filled with inorganic non-metallic particulate materials such as quartz sand and calcium carbonate. After manufacturing, the FRP pipe needs to be formed in a mold. After forming, the FRP pipe needs to be removed from the mold to complete the molding and release process, facilitating subsequent cutting and polishing. Existing demoulding machines require a push ring to be attached to the end of the mold. Due to the length of the mold, the push ring attachment is slow and inefficient.

[0003] The patent specification with publication number CN206855846U discloses a glass fiber reinforced plastic pipe demoulding machine, which includes a bracket for supporting the mold and a transmission device for demoulding, and also includes a driving device for driving the transmission device. The driving device is a motor sprocket group. The bracket is provided with a support frame for positioning and supporting the mold. The support frame includes a positioning plate and a pushing component for pushing the glass fiber reinforced plastic pipe off the mold. The pushing component includes a pushing plate and a pushing ring. The pushing ring abuts against the pushing plate, and the pushing plate is fixedly connected to the chain. After the glass fiber reinforced plastic pipe is formed on the mold, the mold is clamped on the support frame. After the mold is positioned, the motor sprocket group drives the chain to move, thereby driving the pushing plate. At this time, the mold is fixed by the positioning plate, and the pushing plate drives the pushing ring to push the glass fiber reinforced plastic pipe to be removed from the mold.

[0004] However, this FRP pipe demoulding machine has some shortcomings. It uses a push plate to drive a push ring to push the FRP pipe to remove it from the mold. The friction resistance of demoulding is large, the demoulding takes a long time, and the FRP pipe is easily damaged. Therefore, it needs to be optimized and improved. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned problems existing in the conventional technology and to provide a double-station rapid demoulding device for glass fiber reinforced plastic production and an implementation method thereof.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0007] A double-station rapid demoulding device for glass fiber reinforced plastic production, comprising a glass fiber reinforced plastic pipe and a forming roller mold for forming the glass fiber reinforced plastic pipe. A bracket is provided below the glass fiber reinforced plastic pipe to provide support for the same. A rail wheel is provided at the bottom end of the bracket. The rail wheel can move along the length direction of a rail groove provided in a base. Both ends of the forming roller mold protrude outwardly relative to the glass fiber reinforced plastic pipe, and a sling is provided on the outer side of the protruding portion.

[0008] The forming roller mold is composed of a split roller part, a connecting seat, a wedge plate and a positioning screw. There are four split roller parts in total. The split roller part includes a roller body. The outer side of the roller body is provided with a first arc surface, and the inner side is provided with a second arc surface. The axes of the cylindrical surface where the first arc surface and the second arc surface are located coincide with each other. The first arc surface and the second arc surface are symmetrically connected on both sides with a first straight side part, a second straight side part and a bevel side part. The extension surfaces of the first straight side parts on both sides are perpendicular to each other. One end of the second straight side part is perpendicularly connected to the first straight side part, and the other end is perpendicularly connected to the first straight side part. One end is connected to the bevel portion, and the first straight side portion and the second straight side portion of the two adjacent split roller portions together form an inner installation area for installing the connecting seat, and an outer installation area for installing the wedge plate is formed between the bevel portions of the two adjacent split roller portions. The first straight side portion is provided with positioning screw holes inward near both ends, and the connecting seat is a groove-type plate. The web portion of the connecting seat can be abutted against the wedge plate located in the outer installation area, and the two side plates of the connecting seat are each provided with positioning through holes near both ends, and the positioning screws can be screwed into the positioning screw holes through the positioning through holes.

[0009] Furthermore, in the above-mentioned double-station rapid demoulding device for glass fiber reinforced plastic production, the positioning screw hole is located at the portion of the forming roller mold that protrudes relative to the glass fiber reinforced plastic pipe.

[0010] Furthermore, in the above-mentioned double-station rapid demoulding device for glass fiber reinforced plastic production, the cross section of the wedge plate is an isosceles triangle, and its sharp angle is 20-30 degrees.

[0011] Furthermore, in the above-mentioned double-station rapid demoulding device for glass fiber reinforced plastic production, threaded pulling holes are provided inwardly at both ends of the bottom end surface of the wedge plate opposite to the sharp corner.

[0012] Furthermore, in the above-mentioned double-station rapid demoulding device for glass fiber reinforced plastic production, the central angle corresponding to the first arc surface is 90 degrees, and the central angle corresponding to the second arc surface is 45 degrees.

[0013] Furthermore, in the above-mentioned double-station rapid demoulding device for glass fiber reinforced plastic production, the side end of the roller body of the split roller portion is also provided with a support through-hole along the length direction, and a support tube is passed through the support through-hole.

[0014] Furthermore, in the above-mentioned double-station rapid demoulding device for glass fiber reinforced plastic production, each component of the forming roller mold is made of stainless steel.

[0015] A method for implementing a dual-station rapid demoulding device for glass fiber reinforced plastic production comprises the following steps:

[0016] 1) When demoulding, first use the sling to lift the forming roller mold and the FRP pipe to the top of the base, and slowly lower them so that the FRP pipe contacts the bracket. The bracket is pre-adjusted to its position on the base according to the length of the FRP pipe;

[0017] 2) Remove the fastening screws from both ends of the forming roller mold. There is a worker standing at each end of the forming roller mold. First, the two workers use the hook at one end of the pull hook to hook the positioning through-holes at both ends of the connecting seat, and remove the connecting seat in turn; then the two workers screw the screw at the other end of the pull hook into the threaded pulling holes at both ends of the wedge plate, and remove the wedge plate in turn; finally, the two workers remove the split roller parts from the fiberglass pipe in turn to complete the demolding operation.

[0018] The beneficial effects of the present invention are:

[0019] The structural design of the present invention is reasonable. The forming roller mold is designed as a combined structure consisting of a split roller part, a connecting seat, a wedge plate and a positioning screw. The demolding is based on a double-station operation. When demolding is required, two workers cooperate to sequentially realize the disengagement of the positioning screw, the connecting seat, the wedge plate and the split roller part. In this way, friction between the glass fiber reinforced plastic pipe and the forming roller mold can be avoided during demolding, thereby effectively ensuring the molding quality of the glass fiber reinforced plastic pipe.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic diagram of the state of the present invention during demoulding;

[0023] Figure 2 Schematic diagram of the side structure of the forming roller mold in the present invention;

[0024] Figure 3 Schematic diagram of the side structure of the split roller portion of the present invention;

[0025] Figure 4 Schematic diagram of the structure of the split roller part and the wedge plate in the present invention;

[0026] Figure 5It is a structural schematic diagram of the connecting seat in the present invention;

[0027] Figure 6 Schematic diagram of the structure of the draw hook in the present invention;

[0028] In the accompanying drawings, the reference numerals of the various components are as follows:

[0029] 1-forming roller mold, 11-split roller part, 111-roller body, 112-first arc surface, 113-second arc surface, 114-first straight edge, 115-second straight edge, 116-bevel edge, 117-positioning screw hole, 118-support through hole, 12-connecting seat, 13-wedge plate, 14-positioning screw, 2-glass fiber reinforced plastic pipe, 3-bracket, 4-rail wheel, 5-sling, 6-support pipe, 7-hook. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] See also Figure 1-6 As shown, this embodiment is a dual-station rapid demolding device for FRP production, comprising a FRP tube 2 and a forming roller mold 1 for forming the FRP tube 2. A bracket 3 is provided below the FRP tube 2 to provide support for it. The bottom end of the bracket 3 is equipped with a rail wheel 4, which can move along the length of the rail groove defined in the base 1. Both ends of the forming roller mold 1 protrude outward from the FRP tube 2, and a sling 5 is provided on the outside of the protruding portion. The sling 5 is moved by the crane's hook.

[0032] In this embodiment, the forming roller mold 1 is composed of a split roller portion 11, a connecting seat 12, a wedge plate 13, and a positioning screw 14. There are four split roller portions 11, each comprising a roller body 111. The roller body 111 has a first arcuate surface 112 on its outer side and a second arcuate surface 113 on its inner side. The axes of the cylindrical surfaces on which the first and second arcuate surfaces 112 and 113 lie coincident. A first straight edge 114, a second straight edge 115, and a beveled edge 116 are symmetrically connected between the first and second arcuate surfaces 112 and 113. The extensions of the first straight edge 114 on either side are perpendicular to each other. One end of the second straight edge 115 is perpendicularly connected to the first straight edge 114, and the other end is connected to the beveled edge 116. The first straight sides 114 and second straight sides 115 of two adjacent split roller sections 11 together form an inner mounting area for mounting the connecting seat 12. An outer mounting area for mounting the wedge plate 13 is formed between the oblique sides 116 of the two adjacent split roller sections 11. Positioning screw holes 117 are provided inwardly near both ends of the first straight sides 114. The connecting seat 12 is a grooved plate, and its web is adapted to abut against the wedge plate 13 located in the outer mounting area. Positioning holes are provided near both ends of the two side plates of the connecting seat 12, through which positioning screws 14 can be screwed into the positioning screw holes 117. The positioning screw holes 117 are located in the portion of the forming roller mold 1 that protrudes relative to the fiberglass reinforced plastic tube 2.

[0033] In this embodiment, the cross section of the wedge plate 13 is an isosceles triangle with a sharp angle of 20-30 degrees. Threaded holes are provided inwardly at both ends of the bottom end surface of the wedge plate 13 opposite to the sharp angle.

[0034] In this embodiment, the central angle corresponding to the first arc surface 112 is 90 degrees, and the central angle corresponding to the second arc surface 113 is 45 degrees.

[0035] In this embodiment, a support through-hole 118 is further provided at the side end of the roller body 111 of the split roller portion 11 along the length direction, and a support tube 6 is passed through the support through-hole 118. When the diameter of the FRP tube 1 is small, the split roller portion 11 is directly taken out manually using the support tube 6; when the diameter of the FRP tube 1 is large, a circulating chain with a guide wheel is passed through the support tube 6, and the guide wheel is rotatably fixed on the sling, so that the split roller portion 11 can be horizontally moved out of the FRP tube 1 along with the circulating chain, and then the circulating chain can be disassembled.

[0036] In this embodiment, each component of the forming roller mold 1 is made of stainless steel.

[0037] This embodiment also provides an implementation method of a dual-station rapid demoulding device for glass fiber reinforced plastic production, comprising the following steps:

[0038] 1) When demoulding, first use the sling to lift the forming roller mold 1 and the FRP tube 2 to the top of the base, and slowly lower them so that the FRP tube 2 contacts the bracket 3. The position of the bracket 3 on the base 4 is pre-adjusted according to the length of the FRP tube 2;

[0039] 2) Remove the fastening screws from both ends of the forming roller mold. With a worker stationed at each end of the forming roller mold 1, they first use the hooks on one end of the retractor 7 to hook the positioning holes at both ends of the connecting seat 12, removing the connecting seat 12 one by one. Then, they screw the screws on the other end of the retractor 7 into the threaded holes at both ends of the wedge plate 13, removing the wedge plates 13 one by one. Finally, the two workers remove the split roller parts 11 from the fiberglass reinforced plastic tube, completing the demolding operation. The retractor 7 is an L-shaped structure with a rubber sleeve covering the center for easy grip.

[0040] A specific application of this embodiment is: the structural design of this embodiment is reasonable, and the forming roller mold 1 is designed as a combined structure consisting of a split roller part 11, a connecting seat 12, a wedge plate 13 and a positioning screw 14. The demolding is based on a double-station operation. When demolding is required, two workers cooperate to realize the disengagement of the positioning screw 14, the connecting seat 12, the wedge plate 13 and the split roller part 11 in turn. In this way, friction between the glass fiber reinforced plastic pipe 2 and the forming roller mold 1 can be avoided during demolding, thereby effectively ensuring the molding quality of the glass fiber reinforced plastic pipe 2.

[0041] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A double-station rapid demoulding device for glass fiber reinforced plastic production, characterized by: The present invention relates to a method for manufacturing a plurality of glass fiber reinforced plastic (GFRP) pipes, wherein the plurality of rollers are connected to each other through the roller body to form a plurality of glass fiber reinforced plastic (GFRP) pipes. The plurality of rollers are connected to each other through the roller body to form a plurality of glass fiber reinforced plastic (GFRP) pipes. The plurality of rollers are connected to each other through the roller body to form a plurality of glass fiber reinforced plastic (GFRP) pipes. One end of the second straight side portion is perpendicularly connected to the first straight side portion, and the other end is connected to the oblique side portion. The first straight side portions and the second straight side portions of the two adjacent split roller portions together form an inner mounting area for mounting the connecting seat. An outer mounting area for mounting the wedge plate is formed between the oblique side portions of the two adjacent split roller portions. Positioning screw holes are opened inwardly near both ends of the first straight side portion. The connecting seat is a groove-shaped plate. The web portion of the connecting seat can abut against the wedge plate located in the outer mounting area. The two side plates of the connecting seat are each provided with a positioning through-hole near both ends. The positioning screws can be screwed into the positioning screw holes through the positioning through-holes. The positioning screw hole is located in the protruding part of the forming roller mold relative to the glass fiber reinforced plastic tube; the cross section of the wedge plate is an isosceles triangle with a sharp angle of 20-30 degrees; the wedge plate has threaded pull holes at both ends of the bottom end surface opposite to the sharp angle.

2. The double-station rapid demoulding device for glass fiber reinforced plastic production according to claim 1, characterized in that: The central angle corresponding to the first arc surface is 90 degrees, and the central angle corresponding to the second arc surface is 45 degrees.

3. The double-station rapid demoulding device for glass fiber reinforced plastic production according to claim 1, characterized in that: The roller body side end of the split roller portion is further provided with a support through-hole along the length direction, and a support tube is passed through the support through-hole.

4. The double-station rapid demoulding device for glass fiber reinforced plastic production according to claim 1, characterized in that: Each component of the forming roller mold is made of stainless steel.

5. The double-station rapid demoulding device for glass fiber reinforced plastic production according to claim 1, characterized in that: The implementation method includes the following steps: 1) When demoulding, first use the sling to lift the forming roller mold and the FRP pipe to the top of the base, and slowly lower them so that the FRP pipe contacts the bracket. The bracket is pre-adjusted to its position on the base according to the length of the FRP pipe; 2) Remove the fastening screws from both ends of the forming roller mold. There is a worker standing at each end of the forming roller mold. First, the two workers use the hook at one end of the pull hook to hook the positioning through-holes at both ends of the connecting seat, and remove the connecting seat in turn; then the two workers screw the screw at the other end of the pull hook into the threaded pulling holes at both ends of the wedge plate, and remove the wedge plate in turn; finally, the two workers remove the split roller parts from the fiberglass pipe in turn to complete the demolding operation.

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