CN110014673B - Demolding treatment process for glass fiber reinforced plastic product - Google Patents
Demolding treatment process for glass fiber reinforced plastic product Download PDFInfo
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- CN110014673B CN110014673B CN201910317085.9A CN201910317085A CN110014673B CN 110014673 B CN110014673 B CN 110014673B CN 201910317085 A CN201910317085 A CN 201910317085A CN 110014673 B CN110014673 B CN 110014673B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0003—Discharging moulded articles from the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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Abstract
The invention provides a demoulding treatment process for a glass fiber reinforced plastic product, which is characterized by comprising the following steps of: firstly, mounting; secondly, stripping; thirdly, injecting water; fourthly, unloading; fifthly, demolding for one time; sixthly, secondary demoulding; the demolding device can solve the problems that the glass fiber reinforced plastic product is damaged and the demolding efficiency is low due to the fact that the conventional demolding device for the glass fiber reinforced plastic product does not strip the space between the glass fiber reinforced plastic product and the mold core and the fact that the glass fiber reinforced plastic product is pulled and demolded by adopting a forced external force, and the demolding device can greatly reduce the damage probability of the glass fiber reinforced plastic product when the glass fiber reinforced plastic product is pulled and demolded by the external force and improve the demolding efficiency of the glass fiber reinforced plastic product through a demolding mode guaranteed by stripping water.
Description
Technical Field
The invention relates to the technical field of glass fiber reinforced plastic processing technology, in particular to a demolding treatment technology for a glass fiber reinforced plastic product.
Background
Glass fiber reinforced plastic is also called fiber reinforced plastic, generally refers to unsaturated polyester reinforced by glass fiber, epoxy resin and phenolic resin matrix, because the used resin varieties are different, the glass fiber reinforced plastic has the advantages of polyester glass fiber reinforced plastic, epoxy glass fiber reinforced plastic and phenolic resin, light weight, hardness, non-conductivity, stable performance, high mechanical strength, less recycling and corrosion resistance, glass fiber reinforced plastic products are widely used in the building industry, the chemical industry, the highway construction industry, the transportation industry, the electrical industry, the communication engineering and the like, wherein the glass fiber reinforced plastic products which are most widely applied in our life are the glass fiber reinforced plastic pipelines in the chemical industry and are mainly used for discharging various sewage corrosion-resistant pipelines.
The FRP pipe is mainly cylindrical, and the production of the cylindrical FRP pipe needs to be carried out a parting agent coating process, a gel coat coating process, a pasting process, a demolding process, an edge cutting and grinding process, a mold maintenance and repair process, a glass fiber cutting process, a resin batching process, a paint process and the like, and the demolding process plays a crucial key step in the production of the FRP pipe, the existing FRP pipe generally needs to manually unload a mold core with a FRP product from a mold before demolding, and then manual demolding operation is carried out, so that the working efficiency is low, but at present, some automatic demolding equipment for the FRP product is provided, for example, the Chinese patent No. CN 2018115339, the patent name of the invention patent of the FRP pipe demolding device is the invention patent of the FRP pipe demolding device, although the purpose of demolding is realized, the demolding device is forced external force drawing and demolding, the high adhesion degree between the glass fiber reinforced plastic product and the mold core during demolding is not considered, and the glass fiber reinforced plastic product is damaged or damaged due to the fact that the glass fiber reinforced plastic product is pulled and demolded by adopting a forced external force before the glass fiber reinforced plastic product is not stripped from the mold core.
In order to enable the glass fiber reinforced plastic product to be better demoulded, improve the demoulding efficiency and reduce the damage degree of the glass fiber reinforced plastic product in the demoulding process, the invention provides a demoulding treatment process of the glass fiber reinforced plastic product.
Disclosure of Invention
In order to solve the problems, the invention provides a demoulding treatment process for a glass fiber reinforced plastic product, which can solve the problems that the glass fiber reinforced plastic product is damaged and the demoulding efficiency is low because the prior demoulding equipment for the glass fiber reinforced plastic product adopts forced external force to pull and demould without peeling the glass fiber reinforced plastic product from a mould core.
In order to achieve the purpose, the invention adopts the following technical scheme that the demolding treatment process for the glass fiber reinforced plastic product comprises the following steps:
firstly, installation: installing the bottom end of a mold core with a glass fiber reinforced plastic product on a demolding base, manually installing a stripping mechanism on the top end of the mold core, and then manually and positively adjusting the distance between four jaws of a four-jaw self-centering chuck on the stripping mechanism to enable the bottom of a stripping part of a stripping sheet on each jaw to be tightly attached to the side wall of the top end of the mold core;
secondly, stripping: after the stripping mechanism in the first mounting process is mounted, manually holding a rubber hammer to tap a stress platform on the stripping mechanism gradually, transmitting the tapping force to four stripping plates of four jaws of a four-jaw self-centering chuck by the stress platform through four force transmission supporting columns respectively, and after the stripping mechanism moves downwards gradually along with the tapping force, clamping a stripping part on each stripping plate between the surface of a mold core and a glass fiber reinforced plastic product through the downward tapping force so as to form a stripping opening;
thirdly, water injection: after the second stripping process is finished, manually injecting water into the stripping opening by using the conventional water injector, and meanwhile manually lightly knocking by using a rubber hammer from top to bottom along a circle of the side surface of the glass fiber reinforced plastic product, so that the water is continuously expanded between the surface of the whole mold core and the glass fiber reinforced plastic product under vibration;
fourthly, unloading: after the water injection process in the third step is completed, manually using a rubber hammer to sequentially and circularly knock four unloading sheets on the stripping mechanism from bottom to top, so that a stripping part on the stripping sheet is pulled out between the surface of the mold core and the glass fiber reinforced plastic product by virtue of upward hammering force, then manually and reversely adjusting the distance between four clamping jaws of a four-jaw self-centering chuck on the stripping mechanism, so that the bottom of the stripping part of the stripping sheet on the clamping jaws is gradually far away from the glass fiber reinforced plastic product and the side wall of the top end of the mold core, and finally manually unloading the stripping mechanism;
fifthly, primary demoulding: after the unloading process of the fourth step is completed, the two demolding mechanisms are driven to move to two sides of the surface of the glass fiber reinforced plastic product through the tension ring and the telescopic support column on the demolding mechanism under the action of the existing tension equipment, then the hand wheel is manually screwed and rotated to drive the moving screw rod to move inwards, the moving screw rod is screwed and pushed to push the support column to move gradually inwards until the adhesion force adsorption panel on the inner side of the support column is pushed to be tightly attached to the surface of the glass fiber reinforced plastic product, and after the two demolding mechanisms are adjusted, the existing tension equipment drives the two demolding mechanisms to drive the glass fiber reinforced plastic product to be pulled upwards for demolding through tension until the glass fiber reinforced plastic product is taken out from;
sixthly, secondary demolding: if the situation that the adhesion force adsorption panel slides with the surface of the glass fiber reinforced plastic product occurs during the upward drawing and demolding of the existing pulling device in the five-step demolding process, the adsorption force between the adhesion force adsorption panel and the surface of the glass fiber reinforced plastic product is insufficient, at the moment, the existing air pump starts to pump air to the adhesion force sucker on the adhesion force adsorption panel through the air suction pipe, the negative pressure adsorption force between the adhesion force adsorption panel and the surface of the glass fiber reinforced plastic product is increased, the air pump stops working after the air pumping operation is carried out for 1-5 minutes, then the existing pulling device drives the two demolding mechanisms to drive the glass fiber reinforced plastic product to be upward drawn and demolded by means of pulling force, and demolding is completed until the glass fiber.
The stripping mechanism comprises a four-jaw self-centering chuck, stripping pieces are arranged on four jaws at the lower end of the four-jaw self-centering chuck through positioning screws, four force transmission supporting columns are symmetrically arranged at the upper end of the four-jaw self-centering chuck through fixing screws, a stress platform is welded at the top ends of the four force transmission supporting columns, four unloading pieces are symmetrically arranged on the side wall of the stress platform, the four-jaw self-centering chuck is a very mature technology in the prior art, the four-jaw self-centering chuck has the working principle that the four-jaw self-centering chuck consists of a wire coil, four small umbrella teeth and a pair of jaws, the four small umbrella teeth are meshed with the wire coil, the back surface of the wire coil is of a planar thread structure, the jaws are symmetrically and equally arranged on a planar thread, the wire coil can rotate when the small umbrella teeth are pulled by a spanner, the planar thread on the back surface of the wire coil enables the jaws to simultaneously approach to the, the self-centering fixture has the function of automatic centering, and the bottom of the stripping part of the stripping sheet on the jaw is tightly attached to the surface of the top end of the mold core by utilizing the equidistant self-centering adjusting performance of the four-jaw self-centering chuck in the first-step mounting process.
The stripping sheet comprises an installation part and a stripping part, the installation part and the stripping part are integrally machined and formed, the installation part is installed on a four-jaw self-centering chuck through a positioning screw, the stripping part is an inclined trapezoidal structure with a cross section area which is reduced from top to bottom in sequence, the stripping part adopts the structure, the stripping part on the stripping sheet is clamped into a mold core surface and a glass fiber reinforced plastic product by means of downward hammering force to form a stripping opening when the step two stripping process is performed, after the stripping opening is formed, the step three water injection process enables water to continuously expand to the position between the whole mold core surface and the glass fiber reinforced plastic product under vibration, and the bonding degree between the glass fiber reinforced plastic product and the mold core surface is greatly reduced due to the water contained between the mold core surface and the glass fiber reinforced plastic product, so that the step five-time stripping process or the step six-time stripping.
The force transmission support columns are in one-to-one correspondence with the unloading pieces, the unloading pieces and the force transmission support columns are distributed correspondingly, so that the stress direction of the unloading pieces which are circularly knocked in the fourth unloading process is just opposite to the stress direction of the force transmission support columns which are knocked on the stress platform in the second stripping process, and the stripping mechanism can be unloaded quickly.
The demolding mechanism comprises a demolding support frame and a pushing support column, the interior of the demolding support frame is of a hollow structure, the hollow structure penetrates through the inner end of the demolding support frame all the time, limiting sliding grooves are formed in the upper end and the lower end of the inner wall of the hollow structure of the demolding support frame, the pushing support column is installed on the limiting sliding grooves of the hollow structure of the demolding support frame in a sliding fit mode, a threaded hole is formed in the middle of the outer end of the demolding support frame, a moving screw is installed in the threaded hole of the demolding support frame, the inner end of the moving screw abuts against the outer end of the pushing support column, a rotating hand wheel is fixedly installed on the outer end of the moving screw, a tension ring is installed in the middle of the top end of the demolding support frame and is connected with existing tension equipment, a telescopic support column is; promote the inner fixed mounting of pillar and paste power adsorption panel, promote the upper end of pillar and install the exhaust tube, the exhaust tube links to each other with current aspiration pump, and the exhaust tube runs through and links to each other with pasting power adsorption panel through promoting the pillar is inside.
Be located the pulling force ring inboard bilateral symmetry about the drawing of patterns carriage is provided with the locking post, is provided with spacing hole on the locking post, bilateral symmetry is provided with spacing post about promoting the pillar, and spacing post outer end passes the spacing hole of locking post and installs and block the piece, and the mode that adopts the screw installation to block the piece mainly is the spacing installation between spacing post of being convenient for and the locking post, mainly is in order to prevent to remove the screw rod to twist the situation that transition motion leads to promoting pillar roll-off drawing of patterns carriage hollow structure when pushing away the promotion pillar toward inboard gradual movement, has increased the limited function.
The adhesive force adsorption panel is of a cambered surface structure, the central axis of the adhesive force adsorption panel is coincident with the central axis of a glass fiber reinforced plastic product, a hollow cavity is arranged inside the adhesive force adsorption panel, an airflow connecting pipe is arranged in the middle of the outer wall of the adhesive force adsorption panel, one end of the airflow connecting pipe is communicated with the hollow cavity, the other end of the airflow connecting pipe is communicated with an exhaust pipe, the exhaust pipe is connected with an existing exhaust pump, rubber blocks are uniformly arranged in the middle of the inner wall of the adhesive force adsorption panel, the inner ends of the rubber blocks are in a sawtooth shape, the sawtooth-shaped rubber blocks can increase the friction force with the surface of the glass fiber reinforced plastic product, the probability of successful demolding in the one-step demolding process in the fifth step is increased, horn-shaped adhesive force suckers are uniformly arranged on two sides of the inner wall of the adhesive force adsorption panel and are communicated with the hollow cavity, and the heavy adhesive, the adhesion force adsorption panel on the inner side of the push pillar is tightly attached to the surface of the glass fiber reinforced plastic product to form a heavy adsorption force, if the adhesion force adsorption panel slides along the surface of the glass fiber reinforced plastic product when the existing tension device is used for pulling and demolding (namely, the primary demolding process of the step five), the situation that the adhesion force adsorption panel slides along the surface of the glass fiber reinforced plastic product is described, the adsorption force between the adhesion force adsorption panel and the surface of the glass fiber reinforced plastic product is insufficient, then the adhesion force sucker on the adhesion force adsorption panel is pumped through the exhaust pipe through the existing exhaust pump, the negative pressure adsorption force on the adhesion force adsorption panel and the surface of the glass fiber reinforced plastic product is increased, the double-adsorption force guarantee is used as the double-guarantee of the application, and then secondary double-guarantee demolding is performed (.
The invention has the beneficial effects that:
the invention has stripping and water injection processes, the stripping process makes the stripping part on the stripping sheet clamped between the mold core surface and the glass fiber reinforced plastic product by means of downward hammering force to form a stripping opening, and the water injection process can continuously expand to the position between the whole mold core surface and the glass fiber reinforced plastic product by injecting water into the stripping opening and vibrating and knocking the water along the side circle of the glass fiber reinforced plastic product from top to bottom along the rubber hammer, thereby greatly reducing the bonding degree between the glass fiber reinforced plastic product and the mold core surface and greatly reducing the probability of demolding damage when a primary demolding process or a secondary demolding process is carried out;
according to the invention, the demoulding mechanism moves the screw rod to screw and push the pushing support to move, so that the adsorption force formed by the adhesion force adsorption panel on the inner side of the pushing support clinging to the surface of the glass fiber reinforced plastic product is taken as a double adsorption force guarantee, and the adhesion force sucker is exhausted through the exhaust pipe to form a secondary negative pressure adsorption force as a double adsorption force guarantee through the existing air exhaust, so that the demoulding efficiency of the glass fiber reinforced plastic product is improved through the demoulding mode of the double demoulding negative pressure adsorption force guarantee.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a state diagram of the installation process of the present invention;
FIG. 3 is a state diagram of the stripping process of the present invention;
FIG. 4 is a state diagram of the water flooding process of the present invention;
FIG. 5 is a state diagram of the unloading process of the present invention;
FIG. 6 is a state diagram of the primary and secondary demolding process of the present invention;
FIG. 7 is a schematic sectional view of the stripping mechanism of the present invention;
FIG. 8 is an enlarged view of a portion of the invention at A in FIG. 3;
FIG. 9 is a schematic sectional view of the ejection mechanism of the present invention;
fig. 10 is a cross-sectional view taken along line B-B of the cling force absorbing panel of fig. 9 in accordance with the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
As shown in fig. 1, a demolding treatment process for a glass fiber reinforced plastic product, specifically, the demolding treatment process comprises the following steps:
firstly, installation: installing the bottom end of a mold core 1 with a glass fiber reinforced plastic product 2 on a demolding base 3, manually installing a stripping mechanism 4 on the top end of the mold core 1, and manually and positively adjusting the distance between four jaws 41a of a four-jaw self-centering chuck 41 on the stripping mechanism 4, so that the bottoms of stripping parts 42b of stripping sheets 42 on the jaws 41a are tightly attached to the side wall of the top end of the mold core 1, as shown in fig. 2;
secondly, stripping: after the stripping mechanism 4 in the first mounting process is mounted, manually holding a rubber hammer to tap a stressed platform 44 on the stripping mechanism 4 gradually, transmitting a hammering force to four stripping sheets 42 of four jaws 41a of a four-jaw self-centering chuck 41 by the stressed platform 44 through four force transmission supporting columns 43 respectively, and after the stripping mechanism 4 moves downwards gradually along with the hammering force, clamping a stripping part 42b on the stripping sheet 42 between the surface of the mold core 1 and the glass fiber reinforced plastic product 2 through a downward hammering force so as to form a stripping opening, as shown in fig. 3;
thirdly, water injection: after the second stripping process is finished, manually injecting water into the stripping opening by using the existing water injector, and meanwhile manually lightly knocking by using a rubber hammer from top to bottom along a circle of the side surface of the glass fiber reinforced plastic product 2, so that the water is continuously expanded between the surface of the whole mold core 1 and the glass fiber reinforced plastic product 2 under vibration, as shown in fig. 4;
fourthly, unloading: after the water injection process in the third step is completed, manually using a rubber hammer to circularly knock four unloading sheets 45 on the stripping mechanism 4 from bottom to top in sequence, so that a stripping part 42b on the stripping sheet 42 is pulled out between the surface of the mold core 1 and the glass fiber reinforced plastic product 2 by means of upward hammering force, then manually and reversely adjusting the distance between four claws 41a of a four-claw self-centering chuck 41 on the stripping mechanism 4, so that the bottoms of stripping parts 42b of the stripping sheets 42 on the claws 41a are gradually far away from the glass fiber reinforced plastic product 2 and the side wall of the top end of the mold core 1, and finally manually unloading the stripping mechanism 4, as shown in fig. 5;
fifthly, primary demoulding: after the unloading process of the fourth step is completed, under the action of the existing pulling device, the pulling ring 55 and the telescopic support 56 on the demolding mechanism 5 drive the two demolding mechanisms 5 to move to two sides of the surface of the glass fiber reinforced plastic product 2, then the hand wheel 54 is manually screwed and rotated to drive the moving screw 53 to move inwards, the moving screw 53 screws and pushes the pushing support 52 to move inwards step by step until the adhesion force adsorption panel 57 on the inner side of the pushing support 52 is tightly attached to the surface of the glass fiber reinforced plastic product 2, after the two demolding mechanisms 5 are adjusted, the existing pulling device drives the two demolding mechanisms 5 to pull up the glass fiber reinforced plastic product 2 by means of pulling force to perform demolding until the glass fiber reinforced plastic product 2 is taken out from the mold core 1, and demolding is completed, as shown in fig;
sixthly, secondary demolding: if the sliding condition between the adhesion force adsorption panel 57 and the surface of the glass fiber reinforced plastic product 2 occurs during the upward drawing and demolding of the existing pulling device in the five-step demolding process, which indicates that the adsorption force between the adhesion force adsorption panel 57 and the surface of the glass fiber reinforced plastic product 2 is insufficient, at this time, the existing air pump starts to pump air to the adhesion force suction cup 574 on the adhesion force adsorption panel 57 through the air suction pipe 58, so that the negative pressure adsorption force between the adhesion force adsorption panel 57 and the surface of the glass fiber reinforced plastic product 2 is increased, the air pump stops working after the air pumping operation is carried out for 1-5 minutes, and then the existing pulling device drives the two demolding mechanisms 5 to drive the glass fiber reinforced plastic product 2 to be upward drawn and demolded by virtue of pulling force until the glass; as shown in fig. 6.
As shown in fig. 7 and 8, the peeling mechanism 4 includes a four-jaw self-centering chuck 41, a peeling sheet 42 is mounted on four jaws 41a at the lower end of the four-jaw self-centering chuck 41 through positioning screws, the peeling sheet 42 includes a mounting portion 42a and a peeling portion 42b, the mounting portion 42a and the peeling portion 42b are integrally formed, the mounting portion 42a is mounted on the four-jaw self-centering chuck 41 through the positioning screws, the peeling portion 42b is an inclined trapezoidal structure whose cross-sectional area is gradually reduced from top to bottom, and the peeling portion 42b is configured to facilitate the peeling portion 42b on the peeling sheet 42 to be clamped between the surface of the mold core 1 and the glass fiber reinforced plastic product 2 by a downward hammering force during the second peeling process to form a peeling opening, after the peeling opening is formed, the third water injection process makes water continuously expand between the surface of the entire mold core 1 and the glass fiber reinforced plastic product 2 under vibration, because water is contained between the surface of the, the bonding degree between the glass fiber reinforced plastic product 2 and the surface of the mold core 1 is greatly reduced, and the demolding damage probability is greatly reduced when the five-time demolding process or the six-time demolding process is carried out; four force transmission supporting columns 43 are symmetrically installed at the upper end of the four-jaw self-centering chuck 41 through fixing screws, stress platforms 44 are welded at the top ends of the four force transmission supporting columns 43, four unloading pieces 45 are symmetrically installed on the side walls of the stress platforms 44, the positions of the force transmission supporting columns 43 correspond to the positions of the unloading pieces 45 one by one, and the unloading pieces 45 and the force transmission supporting columns 43 are distributed correspondingly, so that the stress direction of the circular knocking unloading pieces 45 in the fourth unloading process is exactly opposite to the stress direction of the force transmission supporting columns 43 in the second stripping process when the stress platforms 44 are knocked, and the stripping mechanism 4 can be unloaded quickly; the four-jaw self-centering chuck 41 is a very mature technology in the prior art, and has the working principle that the four-jaw self-centering chuck 41 consists of a wire coil, four small bevel gears and a pair of jaws 41a, wherein the four small bevel gears are meshed with the wire coil, the back surface of the wire coil is of a planar thread structure, the jaws 41a are symmetrically and equally arranged on the planar thread, when a spanner is used for pulling the small bevel gears, the wire coil rotates, the planar thread on the back surface of the wire coil enables the jaws 41a to simultaneously approach to the center or withdraw from the center, and the four jaws 41a have equal moving distances and have an automatic centering function because the thread pitches of planar rectangular threads on the wire coil are equal, so that the bottoms of stripping parts 42b of stripping sheets 42 on the jaws 41a are tightly attached to the surface of the top end of a mold core 1 when the four-jaw self-centering chuck 41 is used for performing equidistant self.
As shown in fig. 9 and 10, the demolding mechanism 5 includes a demolding support frame 51 and a pushing pillar 52, the interior of the demolding support frame 51 is a hollow structure, the hollow structure extends all the way to the inner end of the demolding support frame 51, the upper and lower ends of the inner wall of the hollow structure of the demolding support frame 51 are provided with limiting sliding grooves, the pushing pillar 52 is installed on the limiting sliding groove of the hollow structure of the demolding support frame 51 in a sliding fit manner, the middle part of the outer end of the demolding support frame 51 is provided with a threaded hole, a moving screw 53 is installed in the threaded hole of the demolding support frame 51, the inner end of the moving screw 53 abuts against the outer end of the pushing pillar 52, the outer end of the moving screw 53 is fixedly provided with a rotating hand wheel 54, the upper and lower sides of the demolding support frame 51 located inside the tension ring 55 are symmetrically provided with locking pillars 51a, the locking pillars 51a are provided, the stop block 52b is arranged at the outer end of the limit column 52a through the limit hole of the locking column 51a, the stop block 52b is arranged by adopting a screw, the limit installation between the limit column 52a and the locking column 51a is mainly facilitated, the condition that the transition motion causes the push column 52 to slide out of the hollow structure of the demoulding support frame 51 when the moving screw 53 screws and pushes the push column 52 to move inwards step by step is mainly prevented, and the limiting function is increased; a tension ring 55 is arranged in the middle of the top end of the demoulding support frame 51, the tension ring 55 is connected with the existing tension equipment, a telescopic strut 56 is arranged on the top end surface of the demoulding support frame 51 positioned outside the tension ring 55, and the telescopic strut 56 is connected with the existing tension equipment; the inner end of the pushing support column 52 is fixedly provided with a force-attaching adsorption panel 57, the upper end of the pushing support column 52 is provided with an air extraction pipe 58, the air extraction pipe 58 is connected with the existing air extraction pump, and the air extraction pipe 58 penetrates through the pushing support column 52 and is connected with the force-attaching adsorption panel 57; the adhesion force adsorption panel 57 is of an arc surface structure, the central axis of the adhesion force adsorption panel 57 coincides with the central axis of the glass fiber reinforced plastic product 2, a hollow cavity 571 is arranged inside the adhesion force adsorption panel 57, an airflow connecting pipe 572 is arranged in the middle of the outer wall of the adhesion force adsorption panel 57, one end of the airflow connecting pipe 572 is communicated with the hollow cavity 571, the other end of the airflow connecting pipe 572 is communicated with an air exhaust pipe 58, the air exhaust pipe 58 is connected with an existing air exhaust pump, rubber blocks 573 are uniformly arranged in the middle of the inner wall of the adhesion force adsorption panel 57, the inner ends of the rubber blocks 573 are in a sawtooth shape, the sawtooth-shaped rubber blocks 573 can increase the friction force with the surface of the glass fiber reinforced plastic product 2, the probability of successful demoulding in the one-step demoulding process is increased, horn-shaped adhesion force suckers 574 are uniformly arranged on two sides of the inner wall of the, the application of a heavy adsorption force ensures that the support column 52 is pushed to move by screwing and pushing the screw 53 on the demoulding mechanism 5, so that the adhesion force adsorption panel 57 on the inner side of the push pillar 52 is tightly attached to the surface of the glass fiber reinforced plastic product 2 to form a heavy adsorption force, if the adhesion force adsorption panel slides on the surface of the glass fiber reinforced plastic product 2 when the existing pulling device is used for pulling demoulding (i.e. the one-time demoulding process in the step five), which indicates that the adsorption force between the adhesion force adsorption panel 57 and the surface of the glass fiber reinforced plastic product 2 is insufficient, the adhesion force suction cup 574 on the adhesion force adsorption panel 57 is sucked by the existing suction pump through the suction pipe 58 at the moment, so as to increase the negative pressure adsorption force between the adhesion force adsorption panel 57 and the surface of the glass fiber reinforced plastic product 2, which serves as the dual adsorption force guarantee of the present application, and then carrying out secondary double-guarantee demoulding (namely the secondary demoulding process in the step six), thereby greatly increasing the demoulding efficiency.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A demolding treatment process for glass fiber reinforced plastic products is characterized by comprising the following steps:
firstly, installation: installing the bottom end of a mold core with a glass fiber reinforced plastic product on a demolding base, manually installing a stripping mechanism on the top end of the mold core, and then manually and positively adjusting the distance between four jaws of a four-jaw self-centering chuck on the stripping mechanism to enable the bottom of a stripping part of a stripping sheet on each jaw to be tightly attached to the side wall of the top end of the mold core;
secondly, stripping: after the stripping mechanism in the first mounting process is mounted, manually holding a rubber hammer to tap a stress platform on the stripping mechanism gradually, transmitting the tapping force to four stripping plates of four jaws of a four-jaw self-centering chuck by the stress platform through four force transmission supporting columns respectively, and after the stripping mechanism moves downwards gradually along with the tapping force, clamping a stripping part on each stripping plate between the surface of a mold core and a glass fiber reinforced plastic product through the downward tapping force so as to form a stripping opening;
thirdly, water injection: after the second stripping process is finished, manually injecting water into the stripping opening by using the conventional water injector, and meanwhile manually lightly knocking by using a rubber hammer from top to bottom along a circle of the side surface of the glass fiber reinforced plastic product, so that the water is continuously expanded between the surface of the whole mold core and the glass fiber reinforced plastic product under vibration;
fourthly, unloading: after the water injection process in the third step is completed, manually using a rubber hammer to sequentially and circularly knock four unloading sheets on the stripping mechanism from bottom to top, so that a stripping part on the stripping sheet is pulled out between the surface of the mold core and the glass fiber reinforced plastic product by virtue of upward hammering force, then manually and reversely adjusting the distance between four clamping jaws of a four-jaw self-centering chuck on the stripping mechanism, so that the bottom of the stripping part of the stripping sheet on the clamping jaws is gradually far away from the glass fiber reinforced plastic product and the side wall of the top end of the mold core, and finally manually unloading the stripping mechanism;
fifthly, primary demoulding: after the unloading process of the fourth step is completed, the two demolding mechanisms are driven to move to two sides of the surface of the glass fiber reinforced plastic product through the tension ring and the telescopic support column on the demolding mechanism under the action of the existing tension equipment, then the hand wheel is manually screwed and rotated to drive the moving screw rod to move inwards, the moving screw rod is screwed and pushed to push the support column to move gradually inwards until the adhesion force adsorption panel on the inner side of the support column is pushed to be tightly attached to the surface of the glass fiber reinforced plastic product, and after the two demolding mechanisms are adjusted, the existing tension equipment drives the two demolding mechanisms to drive the glass fiber reinforced plastic product to be pulled upwards for demolding through tension until the glass fiber reinforced plastic product is taken out from;
sixthly, secondary demolding: if the situation that the adhesion force adsorption panel slides with the surface of the glass fiber reinforced plastic product occurs during the upward drawing and demolding of the existing pulling device in the five-step demolding process, the adsorption force between the adhesion force adsorption panel and the surface of the glass fiber reinforced plastic product is insufficient, at the moment, the existing air pump starts to pump air to the adhesion force sucker on the adhesion force adsorption panel through the air suction pipe, the negative pressure adsorption force between the adhesion force adsorption panel and the surface of the glass fiber reinforced plastic product is increased, the air pump stops working after the air pumping operation is carried out for 1-5 minutes, then the existing pulling device drives the two demolding mechanisms to drive the glass fiber reinforced plastic product to be upward drawn and demolded by means of pulling force until the glass fiber reinforced plastic product is taken;
the stripping mechanism comprises a four-jaw self-centering chuck, stripping pieces are mounted on four jaws at the lower end of the four-jaw self-centering chuck through positioning screws, four force transmission supporting columns are symmetrically mounted at the upper end of the four-jaw self-centering chuck through fixing screws, a stress platform is welded at the top ends of the four force transmission supporting columns, and four unloading pieces are symmetrically mounted on the side wall of the stress platform;
the stripping sheet comprises an installation part and a stripping part, the installation part and the stripping part are integrally machined and formed, the installation part is installed on the four-jaw self-centering chuck through a positioning screw, and the stripping part is an inclined trapezoidal structure with the cross-sectional area gradually reduced from top to bottom.
2. The process of claim 1, wherein the force-transmitting strut is positioned in one-to-one correspondence with the load-unloading sheet.
3. The glass fiber reinforced plastic product demolding treatment process as claimed in claim 1, wherein the demolding mechanism comprises a demolding support frame and a pushing support column, the demolding support frame is internally of a hollow structure, the hollow structure penetrates all the way to the inner end of the demolding support frame, limiting sliding grooves are formed in the upper end and the lower end of the inner wall of the hollow structure of the demolding support frame, the pushing support column is installed on the limiting sliding grooves of the hollow structure of the demolding support frame in a sliding fit mode, a threaded hole is formed in the middle of the outer end of the demolding support frame, a moving screw is installed in the threaded hole of the demolding support frame, the inner end of the moving screw abuts against the outer end of the pushing support column, a rotating hand wheel is fixedly installed on the outer end of the moving screw, a tension ring is installed in the middle of the top end of the demolding support frame; the inner fixed mounting of promotion pillar has the power of pasting to adsorb the panel, and the exhaust tube is installed to the upper end of promotion pillar, and the exhaust tube runs through and links to each other with the power of pasting adsorbs the panel through promoting the pillar is inside.
4. The process of claim 3, wherein the demolding support frame is provided with locking posts symmetrically disposed at upper and lower sides thereof, the locking posts are provided with limiting holes, the pushing support post is provided with limiting posts symmetrically disposed at upper and lower sides thereof, and the outer ends of the limiting posts are provided with stop blocks through the limiting holes of the locking posts.
5. The glass fiber reinforced plastic product demolding treatment process as claimed in claim 3, wherein the adhesion force adsorption panel is of a cambered surface structure, a central axis of the adhesion force adsorption panel coincides with a central axis of the glass fiber reinforced plastic product, a hollow cavity is arranged inside the adhesion force adsorption panel, an airflow connecting pipe is arranged in the middle of the outer wall of the adhesion force adsorption panel, one end of the airflow connecting pipe is communicated with the hollow cavity, the other end of the airflow connecting pipe is communicated with the exhaust pipe, a rubber block is uniformly arranged in the middle of the inner wall of the adhesion force adsorption panel, horn-shaped adhesion force suction cups are uniformly arranged on two sides of the inner wall of the adhesion force adsorption panel, and the adhesion force suction cups are communicated with the hollow cavity.
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| CN201910317085.9A CN110014673B (en) | 2019-04-19 | 2019-04-19 | Demolding treatment process for glass fiber reinforced plastic product |
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| CN201910317085.9A CN110014673B (en) | 2019-04-19 | 2019-04-19 | Demolding treatment process for glass fiber reinforced plastic product |
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| CN114889018A (en) * | 2022-05-11 | 2022-08-12 | 天津爱思达新材料科技有限公司 | Stripper for composite products |
| CN118636459B (en) * | 2024-08-13 | 2024-10-15 | 山东欧森管道科技有限公司 | Production line of epoxy glass fiber reinforced plastic pipeline |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6219438A (en) * | 1985-07-19 | 1987-01-28 | Hitachi Zosen Corp | Forming of fiber-reinforced resin pipe |
| CN201380568Y (en) * | 2009-03-26 | 2010-01-13 | 大庆汉维长垣高压玻璃钢管道有限公司 | Hydraulic pressure stripping device for large bore fiberglass reinforced plastic pipes |
| CN201989268U (en) * | 2010-12-23 | 2011-09-28 | 连云港中复连众复合材料集团有限公司 | Demoulding machine for high-pressure glass steel pipe annular mould |
| CN103240820B (en) * | 2012-02-02 | 2017-12-15 | 上海杰事杰新材料(集团)股份有限公司 | A kind of hydraulic pressure stripping device and its applied in Resin Wound shaping pipe is prepared |
| CN204172375U (en) * | 2014-09-19 | 2015-02-25 | 安徽高科管业有限公司 | A kind of stripper apparatus produced for glass reinforced plastic pipe |
| CN206999681U (en) * | 2017-07-29 | 2018-02-13 | 嘉兴神洲玻璃钢管道有限公司 | A kind of glass reinforced plastic pipe ingot stripper |
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