CN111230053A - Surface treatment method for resin sand core after manufacturing and molding - Google Patents
Surface treatment method for resin sand core after manufacturing and molding Download PDFInfo
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- CN111230053A CN111230053A CN202010161703.8A CN202010161703A CN111230053A CN 111230053 A CN111230053 A CN 111230053A CN 202010161703 A CN202010161703 A CN 202010161703A CN 111230053 A CN111230053 A CN 111230053A
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- sand core
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C23/00—Tools; Devices not mentioned before for moulding
- B22C23/02—Devices for coating moulds or cores
Abstract
The invention belongs to the technical field of mold manufacturing, and particularly relates to a surface treatment method after manufacturing and molding of a resin sand core, which is used for spraying a release agent on the surface of a cylindrical resin sand core and is completed by matching a surface treatment machine after manufacturing and molding of the resin sand core, and comprises the following steps: step one, installing a mold core: vertically and fixedly placing the core on a base and fixing the core through a fixing mechanism; step two, spraying a release agent: the reciprocating motor drives the spraying mechanism to spray; step three, filling gaps: pressurizing by an air pump, and enabling the release agent to permeate into gaps on the surface of the mold core; step four, leveling the release agent: the reciprocating motor drives the spraying mechanism to trowel the release agent; step five, rotating the mold core: the guide groove and the rotation adjusting mechanism are matched to drive the mold core to rotate. The invention improves the uniformity of the thickness of the mold release agent on the surface of the mold core, increases the smoothness of the surface of the mold release agent on the outermost layer and improves the dimensional precision of the casting.
Description
Technical Field
The invention belongs to the technical field of mold manufacturing, and particularly relates to a surface treatment method for a resin sand core after manufacturing and molding.
Background
The core is used to form the internal structure of the casting during casting, and is usually made by hand or machine in a core box by using raw sand and a binder. The core is arranged in a casting mould before casting, and after the metal liquid is poured and condensed, the core is removed during sand discharging, so that a cavity can be formed in the casting. The resin sand core is a core which takes artificial synthetic resin as sand binder; after the core is formed from the resin sand, the resin undergoes an irreversible crosslinking reaction by the action of the curing agent and is cured, thereby imparting the necessary strength to the core. After the resin sand core is manufactured, a layer of release agent needs to be sprayed on the surface of the resin sand core, so that the solidified and formed product can be smoothly separated from the core, and a smooth and flat casting is obtained. At present, the mold core surface spraying release agent is mainly carried out manually, namely, an operator holds a sprayer to spray the mold core surface, and in the actual production process, the mode has low processing efficiency and the following problems: (1) when a sprayer is manually held by hands to spray a release agent on the surface of a core, the constant distance between the outlet of the sprayer and the surface of the core is difficult to ensure, the thickness of the release agent on the surface of the core is easy to cause uneven thickness, the core and a casting are bonded during demoulding, and even the dimensional precision of the casting is reduced; (2) when the sprayer is manually held to spray the release agent on the surface of the core, the relative movement speed of the sprayer and the surface of the core is difficult to keep constant, and the thickness of the release agent on the surface of the core is also uneven.
Disclosure of Invention
Technical problem to be solved
The invention provides a surface treatment method for a resin sand core after manufacturing and molding, which aims to solve the following problems existing in the prior spraying of the surface of a core: (1) when a sprayer is manually held by hands to spray a release agent on the surface of a core, the constant distance between the outlet of the sprayer and the surface of the core is difficult to ensure, the thickness of the release agent on the surface of the core is easy to cause uneven thickness, the core and a casting are bonded during demoulding, and even the dimensional precision of the casting is reduced; (2) when the sprayer is manually held to spray the release agent on the surface of the core, the relative movement speed of the sprayer and the surface of the core is difficult to keep constant, and the thickness of the release agent on the surface of the core is also uneven.
(II) technical scheme
In order to solve the technical problems, the invention adopts the following technical scheme:
a surface treatment method after manufacturing and molding of a resin sand core is used for spraying a mold release agent on the surface of a cylindrical resin sand core, and is completed by matching a surface treatment machine after manufacturing and molding of the resin sand core, wherein the surface treatment machine after manufacturing and molding of the resin sand core comprises a horizontal bottom plate, a seal box is fixedly installed on the bottom plate, and a storage box for storing the mold release agent is fixedly installed on the outer side surface of the seal box. The sealing box top plate opening is hinged with a sealing plate which is matched with the opening, and an air pump is fixedly arranged on the sealing plate.
A reciprocating motor is vertically and fixedly installed at the top of the sealing box through a motor base, the output end of the reciprocating motor is fixedly connected with a lead screw which vertically penetrates through a bottom plate, and a guide rod parallel to the lead screw is fixedly installed on the bottom plate. And a sliding block which is in running fit with the lead screw is arranged on the guide rod in a sliding way. The end part of the sliding block is fixedly connected with an installation block, a spraying mechanism and a floating mechanism are horizontally and rotatably installed on the installation block, and the spraying mechanism is communicated with the storage box through a hose. The bottom plate is horizontally and rotatably provided with a gear disc and a gear ring which are mutually meshed, the gear disc is fixedly provided with a cylindrical base which is coaxial with the gear disc, and the upper surface of the base is in a horizontal state and is provided with a fixing mechanism. The bottom plate is provided with a rotation adjusting mechanism. The bottom of the mounting block is provided with a guide groove matched with the rotation adjusting mechanism.
The surface treatment method for the resin sand core after manufacturing and molding comprises the following steps:
step one, installing a mold core: the cylindrical mold core is vertically and fixedly placed on the base, so that the axes of the mold core and the base are overlapped, the mold core is fixed through the fixing mechanism, and then the sealing plate is closed.
Step two, spraying a release agent: the demolding agent is conveyed to the spraying mechanism through the storage box, and the installation block and the spraying mechanism are driven to spray the surface of the mold core from bottom to top through forward rotation of the reciprocating motor.
Step three, filling gaps: after the spraying mechanism reaches the top of the mold core, the air pump is used for pressurizing air delivered to the sealing box, and the air pressure enables the mold release agent attached to the surface of the mold core to penetrate into gaps of the surface of the mold core.
Step four, leveling the release agent: the reciprocating motor rotates reversely to drive the mounting block and the trowelling mechanism to trowel the release agent attached to the surface of the mold core from top to bottom, so that the thickness of the release agent on the surface of the mold core is uniform.
Step five, rotating the mold core: in the process of the top-down movement of the mounting block and the floating mechanism, the gear disc, the base and the mold core are driven to rotate by a fixed angle after the guide groove and the rotation adjusting mechanism enter a matching state. And continuously processing the surface of the other part of the core according to the steps.
As a preferred technical scheme of the invention, a cylindrical cavity is vertically formed in the mounting block, a mounting column coaxial with the mounting block is rotatably mounted in the cavity, a first supporting plate is fixedly mounted on the inner side of the cavity along the radial direction of the mounting column, and a sleeve is fixedly mounted on the outer side of the mounting column along the radial direction of the mounting column. A first return spring is connected between the first supporting plate and the sleeve. A limiting rod is in sliding fit in the sleeve, a second supporting plate is fixedly mounted on the limiting rod, and a second reset spring is connected between the end portion of the sleeve and the second supporting plate. The first slot that communicates the cavity and mutually support with the second backup pad is seted up to the installation piece bottom, and the arc second slot that communicates the cavity and mutually support with the gag lever post is seted up at installation piece top. When the erection column rotates clockwise, the first reset spring of sleeve compression, second reset spring passes through the second backup pad simultaneously and contradicts the gag lever post on the cavity lateral wall. When the limiting rod moves to the first slot position, the limiting rod and the second supporting plate are pushed into the first slot under the action of the elastic force of the second return spring.
As a preferred technical scheme of the present invention, the bottom plate is fixedly provided with a mounting frame, and the top of the mounting frame is fixedly provided with a first guide block corresponding to the first slot. And a second guide block corresponding to the second slot is fixedly arranged below the top plate of the seal box. When the sliding block drives the mounting block to move downwards under the driving of the reciprocating motor until the first guide block is inserted into the first slot, the limiting rod and the second support plate move towards the outer side of the first slot under the pushing of the first guide block until the limiting rod and the second support plate are completely separated from the first slot; meanwhile, the sleeve drives the mounting column to rotate anticlockwise under the thrust action of the first return spring until the mounting column rotates to the initial position. When the slider drives the mounting block to move upwards under the driving of the reciprocating motor until the second guide block is inserted into the second slot, the sleeve drives the mounting column to rotate clockwise under the pushing of the second guide block until the limiting rod and the second support plate are pushed into the first slot under the elastic action of the second reset spring, and the mounting column reaches the maximum rotation angle in the clockwise direction.
As a preferable technical scheme of the invention, the end part of the limiting rod is rotatably provided with a ball to reduce the friction force between the limiting rod and the side wall of the cavity.
As a preferable technical solution of the present invention, the spray mechanism includes an internal threaded pipe, an external threaded pipe, and a spray head. The internal thread pipe is horizontally and fixedly installed on the mounting column along the radial direction of the mounting column, the external thread pipe is rotatably installed in the internal thread pipe, and the spray head is fixedly installed at the end part of the external thread pipe. The internal thread pipe is communicated with the storage box through a hose. When the mounting post is in an initial state, the spray head faces the surface of the core, and the distance between the spray head and the surface of the core is adjusted by rotating the external threaded pipe, thereby adjusting the thickness of the release agent layer. When the spraying mechanism moves upwards to spray the surface of the mold core, the distance between the spray head and the surface of the mold core is kept constant, so that the thickness uniformity of the release agent layer is ensured.
As a preferred technical scheme of the invention, the floating mechanism comprises a limiting sleeve, a connecting rod, a bracket, a sponge roller and a supporting spring. The stop collar is along the radial horizontal fixed mounting of erection column on the erection column, and sliding fit has the connecting rod in the stop collar, and the tip fixed mounting of connecting rod has the support, rotates on the support and installs the sponge roller, is connected with coil spring between support and the stop collar tip. When the erection column clockwise rotation was arrived the biggest angle, the sponge roller just is to the core surface to contradict on the core surface under supporting spring's elasticity effect, when floating mechanism downstream smears the core surface, the pressure that the sponge roller applyed to the core surface keeps invariable, thereby has improved the outer smoothness of release agent when having guaranteed release agent thickness is even.
As a preferred technical scheme of the invention, the fixing mechanism comprises a plurality of guide sleeves, a support rod, a support block and a support spring. The guide sleeve is evenly distributed along the circumferential direction of the base, a support rod is horizontally and slidably arranged in the guide sleeve, and supporting blocks matched with the outer surface of the mold core are fixedly arranged at the end parts of the support rod. And a supporting spring is connected between the supporting block and the end part of the guide sleeve. After the mold core is placed on the base, the supporting block props against the surface of the mold core under the elastic force action of the supporting spring, and the mold core is ensured to be in a vertical state and a coaxial state with the base.
As a preferable technical scheme of the invention, the rotation adjusting mechanism comprises a first rotating shaft, a baffle, a limiting block, a torsion spring, a second rotating shaft, a push rod and a rolling ball. The first rotating shaft is coaxial with the gear ring and is rotatably arranged in the gear ring. The outer side surface of the first rotating shaft and the inner side surface of the gear ring are hinged with a plurality of groups of baffles corresponding to the positions, and a limiting block is fixedly mounted on the inner wall of the gear ring on one side of each baffle. The bottom surface of the bottom plate is rotatably provided with a second rotating shaft coaxial with the first rotating shaft through a torsion spring, and the top of the second rotating shaft is vertically and fixedly provided with a push rod positioned between the gear ring and the first rotating shaft. The guide groove is an arc-shaped guide groove and corresponds to the push rod in position. The depth of the guide groove is gradually increased, and the rolling ball which is in rolling fit with the top surface of the guide groove is installed at the top end of the push rod. The installation piece drives floating mechanism downstream and paints the in-process to the core surface, and the spin at push rod top is contradicted to the guide way top surface, and along with the installation piece continues downstream, the guide way promotes the axis that the push rod used first pivot and rotates as the axle. The push rod drives the second rotating shaft to rotate, and meanwhile, torsional force is applied to the torsion spring. The push rod rotates the in-process and contradicts the baffle, and the baffle keeps off the push rod under the limiting action of stopper, and the push rod passes through the first pivot of baffle promotion and the ring gear rotates, and the ring gear drives toothed disc, base and core and rotates, contradicts the upper surface of ring gear until installation piece bottom surface to the rotation of completion shaping core. The installation piece drives spraying mechanism upward movement and carries out the spraying in-process to the core surface, and torsion spring's reaction force drives second pivot and push rod antiport, and the push rod rotates the in-process and pushes away the baffle, and until the push rod rotates to initial position.
(III) advantageous effects
The invention has at least the following beneficial effects:
(1) when the surface treatment method after the resin sand core is manufactured and molded is adopted to spray the surface of the cylindrical core, the reciprocating motor drives the spraying mechanism to move up and down, and the distance and the relative movement speed between the spray head and the surface of the core are kept constant in the process of moving up and down of the spraying mechanism, so that the thickness uniformity of the release agent attached to the surface of the core is ensured.
(2) In the invention, after the mold release agent is sprayed on the surface of the mold core, the mold release agent attached to the surface of the mold core permeates into the gap on the surface of the mold core by increasing the air pressure in the sealing cavity, and the mold release agent is smoothed, so that the thickness uniformity of the mold release agent is further improved, the smoothness of the surface of the mold release agent on the outermost layer is also increased, and the dimensional accuracy of a casting is improved.
(3) According to the invention, the mold release agent is covered on the surface of the mold core in a vertical strip shape through the spraying mechanism and the troweling mechanism, and after each treatment is completed, the mold core is driven to rotate by a fixed angle through the cooperation of the rotation adjusting mechanism and the guide groove, so that the thickness uniformity of the mold release agent at each position on the surface of the mold core is further increased.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic representation showing the steps of a surface treatment method after the resin sand core is molded in accordance with an embodiment of the present invention;
FIG. 2 is a schematic external perspective view of a surface treatment machine after a resin sand core is molded according to an embodiment of the present invention;
FIG. 3 is a schematic view of a first three-dimensional structure inside a surface treatment machine after a resin sand core is manufactured and molded according to an embodiment of the present invention;
FIG. 4 is a schematic view of a second three-dimensional structure inside the surface treatment machine after the resin sand core is manufactured and molded according to the embodiment of the invention;
FIG. 5 is a schematic view of a third three-dimensional structure inside the surface treatment machine after the resin sand core is manufactured and molded according to the embodiment of the invention;
FIG. 6 is an enlarged view of the surface treating machine A after the resin sand core is molded according to the embodiment of the present invention;
FIG. 7 is an enlarged view of the surface treating machine B after the resin sand core is molded according to the embodiment of the present invention;
FIG. 8 is an enlarged view of the surface treating machine C after the resin sand core is molded according to the embodiment of the present invention;
FIG. 9 is an enlarged view of the surface treating machine D after the resin sand core is molded according to the embodiment of the present invention;
FIG. 10 is a schematic view showing the internal structure of the surface treating machine mounting block after the resin sand core is molded in accordance with the embodiment of the present invention;
FIG. 11 is an enlarged view of the surface treating machine E after the resin sand core is molded according to the embodiment of the present invention.
In the figure: 1-bottom plate, 2-seal box, 3-material storage box, 4-seal plate, 5-air pump, 6-reciprocating motor, 7-lead screw, 8-guide rod, 9-slide block, 10-mounting block, 101-cavity, 102-mounting column, 103-first supporting plate, 104-sleeve, 105-first reset spring, 106-spacing rod, 107-second supporting plate, 108-second reset spring, 109-first slot, 1010-second slot, 1011-ball, 11-spraying mechanism, 111-internal threaded pipe, 112-external threaded pipe, 113-spray head, 12-floating mechanism, 121-spacing sleeve, 122-connecting rod, 123-bracket, 124-sponge roller, 125-spiral spring, 13-gear disc, 14-gear ring, 15-base, 16-fixing mechanism, 161-guide sleeve, 162-support rod, 163-support block, 164-support spring, 17-rotation adjusting mechanism, 171-first rotating shaft, 172-baffle, 173-limit block, 174-torsion spring, 175-second rotating shaft, 176-push rod, 177-rolling ball, 18-guide groove, 19-mounting rack, 20-first guide block and 21-second guide block.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 2 to 11, the surface treatment machine provided in this embodiment after the resin sand core is manufactured and molded includes a horizontal bottom plate 1, a seal box 2 is fixedly installed on the bottom plate 1, and a storage box 3 for storing a mold release agent is fixedly installed on an outer side surface of the seal box 2. The top plate of the sealing box 2 is provided with an opening and is hinged with a sealing plate 4 which is matched with the opening, and an air pump 5 is fixedly arranged on the sealing plate 4.
The top of the sealing box 2 is provided with a reciprocating motor 6 through a motor base, the output end of the reciprocating motor 6 is fixedly connected with a lead screw 7 which vertically penetrates through the bottom plate 1, and the bottom plate 1 is fixedly provided with a guide rod 8 which is parallel to the lead screw 7. A slide block 9 which is in running fit with the lead screw 7 is arranged on the guide rod 8 in a sliding way. The end part of the sliding block 9 is fixedly connected with an installation block 10, a spraying mechanism 11 and a floating mechanism 12 are horizontally and rotatably installed on the installation block 10, and the spraying mechanism 11 is communicated with the material storage box 3 through a hose. A gear disc 13 and a gear ring 14 which are mutually meshed are horizontally and rotatably arranged on the bottom plate 1, a cylindrical base 15 which is coaxial with the gear disc 13 is fixedly arranged on the gear disc 13, and the upper surface of the base 15 is in a horizontal state and is provided with a fixing mechanism 16. The base plate 1 is provided with a rotation adjusting mechanism 17. The bottom of the mounting block 10 is provided with a guide groove 18 which is matched with the rotation adjusting mechanism 17.
In this embodiment, a cylindrical cavity 101 is vertically formed in the mounting block 10, a mounting post 102 coaxial with the cavity 101 is rotatably mounted in the cavity 101, a first support plate 103 is fixedly mounted on the inner side of the cavity 101 along the radial direction thereof, and a sleeve 104 is fixedly mounted on the outer side of the mounting post 102 along the radial direction thereof. A first return spring 105 is connected between the first support plate 103 and the sleeve 104. A limiting rod 106 is in sliding fit in the sleeve 104, a second supporting plate 107 is fixedly installed on the limiting rod 106, and a second return spring 108 is connected between the end of the sleeve 104 and the second supporting plate 107. The bottom of the mounting block 10 is provided with a first slot 109 which is communicated with the cavity 101 and is matched with the second support plate 107, and the top of the mounting block 10 is provided with an arc-shaped second slot 1010 which is communicated with the cavity 101 and is matched with the limiting rod 106. When the mounting post 102 is rotated clockwise, the sleeve 104 compresses the first return spring 105, and the second return spring 108 pushes the stopper rod 106 against the sidewall of the cavity 101 through the second support plate 107. When the stopper rod 106 moves to the position of the first slot 109, the stopper rod 106 and the second support plate 107 are pushed into the first slot 109 by the elastic force of the second return spring 108.
In this embodiment, a mounting bracket 19 is fixedly disposed on the base plate 1, and a first guide block 20 corresponding to the first slot 109 is fixedly mounted on the top of the mounting bracket 19. A second guide block 21 corresponding to the second slot 1010 is fixedly installed below the top plate of the seal box 2. When the slide block 9 drives the mounting block 10 to move downwards under the driving of the reciprocating motor 6 until the first guide block 20 is inserted into the first slot 109, the limiting rod 106 and the second support plate 107 move outwards of the first slot 109 under the pushing of the first guide block 20 until completely separating from the first slot 109; meanwhile, the sleeve 104 drives the mounting post 102 to rotate counterclockwise under the pushing force of the first return spring 105 until the mounting post 102 rotates to the initial position. When the slider 9 drives the mounting block 10 to move upward under the driving of the reciprocating motor 6 until the second guide block 21 is inserted into the second slot 1010, the sleeve 104 drives the mounting post 102 to rotate clockwise under the pushing of the second guide block 21 until the limiting rod 106 and the second support plate 107 are pushed into the first slot 109 under the elastic force of the second return spring 108, and the mounting post 102 reaches the maximum rotation angle in the clockwise direction.
In this embodiment, the end of the stop rod 106 is rotatably mounted with a ball 1011 to reduce the friction between the stop rod 106 and the side wall of the cavity 101.
In the present embodiment, the spray mechanism 11 includes an internally threaded tube 111, an externally threaded tube 112, and a spray head 113. The internal threaded pipe 111 is horizontally and fixedly installed on the mounting column 102 along the radial direction of the mounting column 102, the external threaded pipe 112 is rotatably installed in the internal threaded pipe 111, and the spray head 113 is fixedly installed at the end part of the external threaded pipe 112. The inner threaded pipe 111 is communicated with the storage tank 3 through a hose. When the mounting post 102 is in the initial state, the head 113 is opposed to the core surface, and the distance between the head 113 and the core surface is adjusted by rotating the male screw pipe 112, thereby adjusting the thickness of the release agent layer. When the spraying mechanism 11 moves upwards to spray the surface of the core, the distance between the spray head 113 and the surface of the core is kept constant, so that the thickness of the release agent layer is ensured to be uniform.
In this embodiment, the floating mechanism 12 includes a position-limiting sleeve 121, a connecting rod 122, a bracket 123, a sponge roller 124 and a supporting spring 125. Stop collar 121 is along the radial level fixed mounting of erection column 102 on erection column 102, and sliding fit has connecting rod 122 in stop collar 121, and the tip fixed mounting of connecting rod 122 has support 123, rotates on the support 123 and installs sponge roller 124, is connected with coil spring 125 between support 123 and the stop collar 121 tip. When the mounting post 102 rotates clockwise to the maximum angle, the sponge roller 124 is opposite to the surface of the mold core and is abutted against the surface of the mold core under the action of the elastic force of the supporting spring 125, and when the troweling mechanism 12 moves downwards to smear the surface of the mold core, the pressure applied to the surface of the mold core by the sponge roller 124 is kept constant, so that the smoothness of the outer layer of the mold release agent is improved while the thickness of the mold release agent is uniform.
In this embodiment, the fixing mechanism 16 includes a plurality of guide sleeves 161, a support rod 162, a support block 163, and a support spring 164. The guide sleeve 161 is uniformly distributed along the circumferential direction of the base 15, a support rod 162 is horizontally and movably arranged in the guide sleeve 161, and a support block 163 matched with the outer surface of the mold core is fixedly arranged at the end part of the support rod 162. A supporting spring 164 is connected between the supporting block 163 and the end of the guide sleeve 161. After the core is placed on the base 15, the supporting block 163 abuts against the surface of the core under the elastic force of the supporting spring 164, so as to ensure that the core is in a vertical state and coaxial with the base 15.
In this embodiment, the rotation adjusting mechanism 17 includes a first rotating shaft 171, a stopper 172, a stopper 173, a torsion spring 174, a second rotating shaft 175, a push rod 176, and a ball 177. The first shaft 171 is coaxial with the ring gear 14 and is rotatably mounted within the ring gear 14. The outer side of the first rotating shaft 171 and the inner side of the gear ring 14 are hinged with a plurality of groups of baffles 172 corresponding to the positions, and the inner wall of the gear ring 14 on one side of the baffles 172 is fixedly provided with a limiting block 173. A second rotating shaft 175 coaxial with the first rotating shaft 171 is rotatably mounted on the bottom surface of the base plate 1 through a torsion spring 174, and a push rod 176 between the ring gear 14 and the first rotating shaft 171 is vertically and fixedly mounted on the top of the second rotating shaft 175. The guide slot 18 is an arc-shaped guide slot and corresponds to the position of the push rod 176. The depth of the guide groove 18 is gradually increased, and the top end of the push rod 176 is provided with a rolling ball 177 which is in rolling fit with the top surface of the guide groove 18. In the process that the installation block 10 drives the troweling mechanism 12 to move downwards to paint the surface of the mold core, the rolling ball 177 at the top of the push rod 176 abuts against the top surface of the guide groove 18, and as the installation block 10 continues to move downwards, the guide groove 18 pushes the push rod 176 to rotate by taking the axis of the first rotating shaft 171 as a shaft. The push rod 176 rotates the second shaft 175 and applies a torsion force to the torsion spring 174. The push rod 176 collides with the baffle 172 in the rotating process, the baffle 172 blocks the push rod 176 under the limiting action of the limiting block 173, the push rod 176 pushes the first rotating shaft 171 and the gear ring 14 to rotate through the baffle 172, and the gear ring 14 drives the gear disc 13, the base 15 and the mold core to rotate until the bottom surface of the mounting block 10 collides with the upper surface of the gear ring 14, so that the rotation of the mold core is completed. During the process of spraying the surface of the core by the upward movement of the spraying mechanism 11 driven by the mounting block 10, the reaction force of the torsion spring 174 drives the second rotating shaft 175 and the push rod 176 to rotate in the opposite direction, and the push rod 176 pushes the baffle 172 open during the rotation process until the push rod 176 rotates to the initial position.
As shown in fig. 1, the embodiment provides a surface treatment method after manufacturing and molding of a resin sand core, which is used for spraying a release agent on the surface of a cylindrical resin sand core, and the surface treatment is completed by matching the resin sand core manufactured and molded by using a surface treatment machine, and specifically includes the following steps:
step one, installing a mold core: the cylindrical core is vertically and fixedly placed on the base 15, so that the axes of the core and the base 15 are overlapped, the supporting block 163 abuts against the surface of the core under the action of the elastic force of the supporting spring 164, the core is ensured to be in a vertical state and be coaxial with the base 15, and then the sealing plate 4 is closed.
Step two, spraying a release agent: and starting the reciprocating motor 6, conveying the release agent to the spraying mechanism 11 through the material storage box 3, and driving the mounting block 10 and the spraying mechanism 11 to spray the surface of the mold core from bottom to top by forward rotation of the reciprocating motor 6.
Step three, filling gaps: after the spraying mechanism 11 reaches the top of the core, the second guide block 21 is inserted into the second slot 1010, the sleeve 104 is pushed by the second guide block 21 to drive the mounting post 102 to rotate clockwise until the limiting rod 106 and the second support plate 107 are pushed into the first slot 109 under the action of the elastic force of the second return spring 108, and at this time, the sponge roller 124 of the floating mechanism 12 is opposite to the surface of the core. The air pump 5 pressurizes the air supplied to the seal box 2, and the air pressure causes the release agent attached to the core surface to penetrate into the gaps of the core surface.
Step four, leveling the release agent: the reciprocating motor 6 rotates reversely to drive the mounting block 10 and the trowelling mechanism 12 to trowel the release agent attached to the surface of the mold core from top to bottom, so that the thickness of the release agent on the surface of the mold core is uniform.
Step five, rotating the mold core: in the process that the mounting block 10 and the floating mechanism 12 move from top to bottom, the gear disc 13, the base 15 and the mold core are driven to rotate by a fixed angle after the guide groove 18 and the rotation adjusting mechanism 17 enter a matching state. And continuously processing the surface of the other part of the core according to the steps.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The surface treatment method after the resin sand core is manufactured and molded is used for spraying a release agent on the surface of a cylindrical resin sand core, and the surface treatment is completed by matching a surface treatment machine after the resin sand core is manufactured and molded, and is characterized in that: the surface treatment machine comprises a horizontal bottom plate (1), a sealing box (2) is fixedly arranged on the bottom plate (1), and a storage box (3) for storing a release agent is fixedly arranged on the outer side surface of the sealing box (2); a top plate of the sealing box (2) is provided with an opening and is hinged with a sealing plate (4) which is matched with the opening, and an air pump (5) is fixedly arranged on the sealing plate (4);
a reciprocating motor (6) is vertically and fixedly installed at the top of the sealing box (2) through a motor base, the output end of the reciprocating motor (6) is fixedly connected with a lead screw (7) which vertically penetrates through the bottom plate (1), and a guide rod (8) parallel to the lead screw (7) is fixedly installed on the bottom plate (1); a slide block (9) which is rotationally matched with the screw rod (7) is arranged on the guide rod (8) in a sliding way; the end part of the sliding block (9) is fixedly connected with an installation block (10), a spraying mechanism (11) and a floating mechanism (12) are horizontally and rotatably installed on the installation block (10), and the spraying mechanism (11) is communicated with the storage box (3) through a hose; a gear disc (13) and a gear ring (14) which are mutually meshed are horizontally and rotatably arranged on the bottom plate (1), a cylindrical base (15) which is coaxial with the gear disc (13) is fixedly arranged on the gear disc (13), and the upper surface of the base (15) is in a horizontal state and is provided with a fixing mechanism (16); a rotation adjusting mechanism (17) is arranged on the bottom plate (1); the bottom of the mounting block (10) is provided with a guide groove (18) matched with the rotation adjusting mechanism (17);
the surface treatment method for the resin sand core after manufacturing and molding comprises the following steps:
step one, installing a mold core: vertically and fixedly placing the cylindrical mold core on a base (15) so that the axes of the mold core and the base (15) are superposed, fixing the mold core through a fixing mechanism (16), and then closing the sealing plate (4);
step two, spraying a release agent: a demolding agent is conveyed to the spraying mechanism (11) through the material storage box (3), and the reciprocating motor (6) positively rotates to drive the mounting block (10) and the spraying mechanism (11) to spray the surface of the core from bottom to top;
step three, filling gaps: after the spraying mechanism (11) reaches the top of the core, the air pump (5) is used for conveying air to the sealing box (2) for pressurization, and the air pressure enables the release agent attached to the surface of the core to permeate into the gap of the surface of the core;
step four, leveling the release agent: the reciprocating motor (6) rotates reversely to drive the mounting block (10) and the trowelling mechanism (12) to trowel the release agent attached to the surface of the mold core from top to bottom, so that the thickness of the release agent on the surface of the mold core is uniform;
step five, rotating the mold core: in the process that the mounting block (10) and the floating mechanism (12) move from top to bottom, the guide groove (18) and the rotation adjusting mechanism (17) are in a matched state, and then the gear disc (13), the base (15) and the mold core are driven to rotate by a fixed angle; and continuously processing the surface of the other part of the core according to the steps.
2. The surface treatment method for the resin sand core after manufacturing and molding as claimed in claim 1, wherein the surface treatment method comprises the following steps: in the surface treatment machine after the resin sand core is manufactured and molded, a cylindrical cavity (101) is vertically formed in the mounting block (10), a mounting column (102) coaxial with the cavity (101) is rotatably mounted in the cavity (101), a first supporting plate (103) is fixedly mounted on the inner side of the cavity (101) along the radial direction of the cavity, and a sleeve (104) is fixedly mounted on the outer side of the mounting column (102) along the radial direction of the mounting column; a first return spring (105) is connected between the first support plate (103) and the sleeve (104); a limiting rod (106) is in sliding fit in the sleeve (104), a second supporting plate (107) is fixedly mounted on the limiting rod (106), and a second return spring (108) is connected between the end of the sleeve (104) and the second supporting plate (107); first slot (109) that intercommunication cavity (101) and mutually support with second backup pad (107) are seted up to installation piece (10) bottom, and arc second slot (1010) that intercommunication cavity (101) and mutually support with gag lever post (106) are seted up at installation piece (10) top.
3. The surface treatment method for the resin sand core after manufacturing and molding as claimed in claim 2, wherein the surface treatment method comprises the following steps: in the surface treatment machine after the resin sand core is manufactured and molded, a mounting frame (19) is fixedly arranged on a bottom plate (1), and a first guide block (20) corresponding to the position of a first slot (109) is fixedly arranged at the top of the mounting frame (19); a second guide block (21) corresponding to the position of the second slot (1010) is fixedly arranged below the top plate of the seal box (2).
4. The surface treatment method for the resin sand core after manufacturing and molding as claimed in claim 2, wherein the surface treatment method comprises the following steps: in the surface treatment machine after the resin sand core is manufactured and molded, the end part of the limiting rod (106) is rotatably provided with a ball (1011).
5. The surface treatment method for the resin sand core after manufacturing and molding as claimed in claim 2, wherein the surface treatment method comprises the following steps: in the surface treatment machine after the resin sand core is manufactured and molded, the spraying mechanism (11) comprises an internal threaded pipe (111), an external threaded pipe (112) and a spray head (113); the internal threaded pipe (111) is horizontally and fixedly arranged on the mounting column (102) along the radial direction of the mounting column (102), the external threaded pipe (112) is rotatably arranged in the internal threaded pipe (111), and the end part of the external threaded pipe (112) is fixedly provided with the spray head (113); the internal thread pipe (111) is communicated with the storage box (3) through a hose.
6. The surface treatment method for the resin sand core after manufacturing and molding as claimed in claim 2, wherein the surface treatment method comprises the following steps: in the surface treatment machine after the resin sand core is manufactured and molded, the floating mechanism (12) comprises a limiting sleeve (121), a connecting rod (122), a bracket (123), a sponge roller (124) and a spiral spring (125); stop collar (121) are along the radial horizontal fixed mounting of erection column (102) on erection column (102), and sliding fit has connecting rod (122) in stop collar (121), and the tip fixed mounting of connecting rod (122) has support (123), rotates on support (123) and installs sponge roller (124), is connected with coil spring (125) between support (123) and stop collar (121) tip.
7. The surface treatment method for the resin sand core after manufacturing and molding as claimed in claim 1, wherein the surface treatment method comprises the following steps: in the surface treatment machine after the resin sand core is manufactured and molded, the fixing mechanism (16) comprises a plurality of guide sleeves (161), a support rod (162), a support block (163) and a support spring (164); the guide sleeve (161) is uniformly distributed along the circumferential direction of the base (15), a support rod (162) is horizontally and movably arranged in the guide sleeve (161), and a support block (163) matched with the outer surface of the mold core is fixedly arranged at the end part of the support rod (162); and a supporting spring (164) is connected between the supporting block (163) and the end part of the guide sleeve (161).
8. The surface treatment method for the resin sand core after manufacturing and molding as claimed in claim 1, wherein the surface treatment method comprises the following steps: in the surface treatment machine after the resin sand core is manufactured and molded, the rotation adjusting mechanism (17) comprises a first rotating shaft (171), a baffle (172), a limiting block (173), a torsion spring (174), a second rotating shaft (175), a push rod (176) and a rolling ball (177); the first rotating shaft (171) is coaxial with the gear ring (14) and is rotatably arranged in the gear ring (14); a plurality of groups of baffles (172) corresponding to the positions are hinged to the outer side face of the first rotating shaft (171) and the inner side face of the gear ring (14), and a limiting block (173) is fixedly arranged on the inner wall of the gear ring (14) on one side of each baffle (172); a second rotating shaft (175) coaxial with the first rotating shaft (171) is rotatably mounted on the bottom surface of the bottom plate (1) through a torsion spring (174), and a push rod (176) positioned between the gear ring (14) and the first rotating shaft (171) is vertically and fixedly mounted at the top of the second rotating shaft (175); the guide groove (18) is an arc-shaped guide groove and corresponds to the push rod (176) in position; the depth of the guide groove (18) is gradually increased, and the top end of the push rod (176) is provided with a rolling ball (177) which is in rolling fit with the top surface of the guide groove (18).
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| CN111230053B (en) | 2021-03-30 |
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Effective date of registration: 20210309 Address after: 362500 Chengdong Development Area, Dehua County, Quanzhou, Fujian Applicant after: FUJIAN RUIFAN LIGHT INDUSTRY Co.,Ltd. Address before: University of Electronic Science and technology, no.2006, Xiyuan Avenue, high tech Zone (West District), Chengdu, Sichuan 610000 Applicant before: Huang Leji |
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Denomination of invention: A surface treatment method after making and forming resin sand core Effective date of registration: 20210827 Granted publication date: 20210330 Pledgee: Agricultural Bank of China Limited by Share Ltd. Dehua branch Pledgor: FUJIAN RUIFAN LIGHT INDUSTRY Co.,Ltd. Registration number: Y2021980008453 |