Sand core coating equipment

Abstract

The present invention belongs to the field of casting modeling technology, and in particular, relates to a sand core coating device, including a dipping box and a carrier assembly, wherein supports are respectively arranged on both sides of the dipping box, and mounting seats are symmetrically arranged on both sides of the driving shaft; a plurality of carrier assemblies are evenly distributed on the mounting seats, and the rotating shafts of the carrier assemblies are respectively rotatably connected with the mounting seats on both sides; a plurality of triangular oblique ribs are evenly distributed on the outer side of the mounting seats, and the number of the triangular oblique ribs is the same as the number of the carrier assemblies; a first positioning mechanism is arranged on the support, and the first positioning mechanism includes a trapezoidal clamping block, and an inclined slot is provided on the upper end inclined surface of the clamping block, and the clamping block can rise and make one of the triangular oblique ribs cooperate and be arranged in the slot. The device can synchronously perform the work of sand core installation, dipping and unloading after dipping, and can realize simultaneous dipping of multiple sand cores with high dipping efficiency; the stability of the sand core during dipping, installation and unloading is ensured by the positioning mechanism.

Description

Technical Field

[0001] The invention belongs to the technical field of casting modeling, and in particular relates to a sand core coating device. Background Art

[0002] In the field of casting, various equipment is needed to coat the mold or core. Dip coating is an important part of casting production. A layer of functional coating is applied on the surface of the casting sand core, so that a special isolation layer is formed on the surface of the sand mold during pouring, which is conducive to obtaining good quality of the casting.

[0003] Such as: key automotive components - engines, especially turbocharger housings and bearing housing products. In the production process of turbocharger housings and bearing housings, core making is particularly critical. Because the sand cores obtained by core making involve the quality of the internal flow channel of the product, including surface finish and dimensional stability. For this reason, it is necessary to use paint to treat the working surface of the sand core. Since many sand cores need to be dipped in paint on the surface of the sand core according to the casting process requirements, the current dip coating process is to manually put the sand core into the paint bucket. The dip coating area is not easy to control, and it is labor-intensive, the quality is not easy to guarantee, and the production efficiency is low. In addition, for a large number of sand cores, the dip coating method of a single sand core is currently used, and the dip coating efficiency is low. Summary of the invention

[0004] In view of the technical problems existing in the background technology, the present invention provides a sand core coating device.

[0005] To achieve the above purpose, the technical solution provided by the present invention is:

[0006] A sand core coating device comprises a dipping box, a support and a carrier assembly, wherein supports are respectively arranged on both sides of the dipping box, drive shafts are rotatably arranged on the two supports, and mounting seats are symmetrically arranged on both sides of the drive shaft; a plurality of carrier assemblies are evenly distributed on the mounting seats, and the rotating shafts of the carrier assemblies are respectively rotatably connected with the mounting seats on both sides, and the drive shaft can rotate to drive a plurality of carrier assemblies to descend into the dipping box in sequence; a plurality of triangular oblique ribs are evenly distributed on the outer side of the mounting seat, and a plurality of the triangular oblique ribs are all arranged on a fixed cylinder, and the fixed cylinder is connected to the outer wall of the drive shaft; the number of the triangular oblique ribs is the same as the number of the carrier assemblies, and the triangular oblique ribs are respectively arranged corresponding to the rotating shaft; a first positioning mechanism is arranged on the support, and the first positioning mechanism comprises a trapezoidal clamping block, and an inclined slot is provided on the upper end inclined surface of the clamping block, and the clamping block can rise and make one of the triangular oblique ribs cooperate and be arranged in the slot.

[0007] Optionally, a base is integrally extended from the bottom end of the support, and a slide groove is vertically arranged on the support and the base; the first positioning mechanism also includes a first cylinder, a first piston rod, a slider and a slide plate, the first cylinder is vertically fixed to the outer wall of the base, the first piston rod is arranged in an L shape, the end of the first piston rod is connected to the slider, the slider is slidably arranged in the slide groove, a slide plate is arranged at the end of the slider, and the slide plate slides close to the inner wall of the support and the base; the clamping block is fixedly connected to the slide plate.

[0008] Optionally, the loading assembly includes a tripod bracket and a loading plate, both ends of the loading plate are respectively connected to the tripod bracket, and a sleeve is provided at the upper end of the tripod bracket, and the sleeve is provided on the rotating shaft.

[0009] Optionally, a second positioning mechanism is provided on the support, and the second positioning mechanism includes a second cylinder, a second piston rod and a cross bar, and four pins are provided on the cross bar; four carrier components are provided, and fixing blocks are respectively provided on both sides of the bottom end of the triangular bracket, and pin holes are provided on the fixing blocks; when two of the carrier components are rotated to parallel positions, the four pins are respectively docked with the pin holes of the two carrier components rotated to parallel positions; the second cylinder can drive the cross bar to move, so that the pins are inserted into the pin holes to fix the two parallel carrier components.

[0010] Optionally, the slide plate is vertically provided with an avoidance groove, and the second piston rod is slidably arranged on the inner wall of the avoidance groove; the second cylinder is fixed on the outer wall of the support, the second cylinder is arranged directly above the first piston rod, and the second piston rod is inserted into the slide groove; the cross bar is slidably arranged close to the slide plate; a limiting groove is arranged at the bottom end of the clamping block; when the first cylinder and the second cylinder contract, the clamping block descends away from the triangular oblique rib, and the cross bar is clamped in the limiting groove; when the first cylinder and the second cylinder extend, the clamping block rises and engages with the triangular oblique rib, and the cross bar disengages from the limiting groove and extends toward the direction of the loading assembly, so that the pin is clamped in the pin hole.

[0011] Optionally, when the latch pin is inserted into the pin hole, the cross bar is tightly arranged against the outer wall of the mounting seat.

[0012] Optionally, guide holes are respectively provided on both sides of the support, and a guide rod is provided on the cross bar, and the guide rod is slidably arranged in the guide hole.

[0013] Optionally, an oblique opening is provided at the upper end of the dipping box, and the oblique opening is provided on the rotation path of the carrier assembly.

[0014] The present invention has the following advantages and beneficial effects:

[0015] In the present invention, the driving shaft can rotate to drive several carrier components to descend into the dipping box in sequence, so that the sand cores to be dipped can be installed on the carrier components, the sand cores installed on the carrier components can be dipped, and the dipped sand cores can be unloaded from the carrier components in accordance with the process sequence. In this structure, the carrier components always face vertically downward by gravity, and the sand cores can be stably installed for dipping; in this way, the sand cores can be dipped in batches, and the installation, dipping, and unloading of the sand cores can be carried out simultaneously, so that multiple sand cores can be dipped at the same time with high dipping efficiency. In addition, through the first positioning mechanism, the driving shaft can be fixed or contact-fixed by utilizing the coordinated arrangement of the clamping block and the triangular oblique ribs to ensure the stability of the sand cores during dipping, installation, and unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the sand core coating equipment in the present invention;

[0017] Figure 2 for Figure 1 Front view of

[0018] Figure 3 for Figure 2 Right view of;

[0019] Figure 4 for Figure 1 A partial enlarged view of point a in the middle;

[0020] Figure 5 for Figure 2 Sectional view along the AA direction;

[0021] Figure 6 is a structural diagram of the object-carrying assembly in the present invention;

[0022] Figure 7 for Figure 6 Right view of;

[0023] Figure 8 for Figure 6 A magnified view of the structure in the middle;

[0024] Fig. 9 for Figure 2 A magnified view of the structure in the middle;

[0025] Fig.10 for Fig. 9 A schematic diagram of the first positioning mechanism and the second positioning mechanism being released from the object-carrying assembly;

[0026] Fig.11 It is a structural diagram of the connection between the object-carrying assembly, the driving shaft and the mounting seat in the present invention;

[0027] Fig.12One of the structural diagrams of the first positioning mechanism and the second positioning mechanism in the present invention;

[0028] Fig.13 This is the second structural diagram of the first positioning mechanism and the second positioning mechanism in the present invention;

[0029] Fig.14 It is a front view of the first positioning mechanism and the second positioning mechanism in the present invention;

[0030] Fig.15 is a structural diagram of the first positioning mechanism in the present invention;

[0031] Fig.16 is a structural diagram of the second positioning mechanism in the present invention;

[0032] Fig.17 This is a structural diagram of the connection between the drive shaft and the mounting seat in the present invention;

[0033] Fig.18 It is a structural diagram of the support in the present invention.

[0034] Figure markings: 1-base, 11-support, 12-axial hole one, 13-slide groove, 14-guide hole, 2-drive shaft, 21-mounting seat, 22-axial hole two, 23-fixing cylinder, 24-triangular oblique rib, 3-loading plate, 31-loading groove, 32-overflow groove, 4-triangular bracket, 41-sleeve, 411-rotating shaft, 42-mounting groove, 43-threaded hole, 44-fixing block, 45-pin hole, 5-dip coating box, 51-oblique mouth, 6-first cylinder, 61-first piston rod, 62-slider, 63-slide plate, 631-avoidance groove, 64-clamping block, 641-limiting groove, 642-card groove, 7-second cylinder, 71-fixing flange, 72-second piston rod, 73-cross bar, 74-pin, 75-guide rod. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1

[0038] like Figure 1As shown, a sand core coating device includes a dipping box 5, a support 11, a carrier assembly and other components.

[0039] like Figures 1 to 18 As shown, the two sides of the dipping box 5 are provided with supports 11, and the two supports 11 are rotatably provided with the driving shaft 2. Specifically, the support 11 is provided with an axial hole 12, and the two sides of the driving shaft 2 are provided in the axial hole 12 through bearings. The two sides of the driving shaft 2 are symmetrically provided with mounting seats 21, and the two mounting seats 21 are provided at a fixed distance. The mounting seats 21 are provided in a square shape, and a plurality of axial holes 22 are provided at the four corners of the mounting seats 21. A plurality of carrier components are evenly distributed on the mounting seats 21, and the carrier components include a rotating shaft 411. The rotating shaft 411 of the carrier component is respectively connected to the mounting seats 21 on both sides, that is, the rotating shaft 411 is provided in the axial hole 22 through bearings, so that the entire carrier component can rotate relative to the mounting seat 21. In the process of the driving shaft 2 and the mounting seat 21 rotating, the carrier component always vertically downwards by its own weight, ensuring that the sand core can be loaded for transportation and dipping operations. The support 11 is provided with a driving mechanism, such as a driving motor (not shown in the figure), which is connected to the driving shaft 2 for transmission. The driving shaft 2 can rotate to drive a plurality of carrier components to descend into the dipping box 5 in sequence.

[0040] In the present invention, the drive shaft 2 can rotate to drive several carrier components to descend into the dipping box 5 in sequence, so that the sand cores to be dipped can be installed on the carrier components, the sand cores installed on the carrier components can be dipped, and the dipped sand cores can be unloaded from the carrier components according to the process sequence. In this structure, the carrier components always point vertically downward by gravity, and the sand cores can be stably installed for dipping; in this way, the sand cores can be dipped in batches, and the installation, dipping and unloading of the sand cores can be carried out simultaneously, so that multiple sand cores can be dipped at the same time with high dipping efficiency.

[0041] like Figures 1 to 18 As shown, the outer side of the mounting seat 21 is evenly distributed with a plurality of triangular oblique ribs 24, and the plurality of triangular oblique ribs 24 are all arranged on the fixing cylinder 23, and the fixing cylinder 23 is connected to the outer wall of the driving shaft 2. Through the fixing cylinder 23 and the triangular oblique ribs 24, the driving shaft 2 and the mounting seat 21 can be stably connected. The number of the triangular oblique ribs 24 is the same as the number of the object-carrying components, and the triangular oblique ribs 24 are arranged correspondingly to the rotating shaft 411. Fig.17, the triangular oblique rib 24 has an axial hole 22 in the extension direction, that is, the triangular oblique rib 24 and the axial hole 22 are located on the same axis passing through the center of the drive shaft 2. The purpose of this is that when one of the carrier components is rotated to the bottom, that is, in the dipping state, the triangular oblique rib 24 can be rotated to a vertical state to facilitate subsequent fixing operations. A first positioning mechanism is provided on the support 11, and the first positioning mechanism includes a trapezoidal clamping block 64, and an inclined slot 642 is provided on the upper inclined surface of the clamping block 64. The clamping block 64 can rise and make one of the triangular oblique ribs 24 cooperate in the slot 642. As described above, when the carrier component at the bottom is rotated into the dipping box 5, one of the triangular oblique ribs 24 can be rotated to a vertical state at this time, and then the clamping block 64 can be raised to make the clamping block 64 engage with the triangular oblique rib 24, that is, the fixing of the drive shaft 2 is completed to prevent the drive shaft 2 from rotating. Through the first positioning mechanism, the driving shaft 2 can be fixed or contact-fixed by utilizing the matching arrangement of the clamping block 64 and the triangular oblique rib 24, thereby ensuring the stability during sand core dipping, sand core installation and sand core unloading.

[0042] Example 2

[0043] Reference Figure 5 In the present invention, preferably, four loading components are provided. Figure 5 The carrier assembly on the left side is an empty tray without sand cores; the carrier assembly on the bottom side has been loaded with sand cores for dipping; the carrier assembly on the right side has been loaded with sand cores and dipping has been completed. It can be seen that the functions of sand core installation, sand core dipping and sand core unloading can be performed simultaneously in the present invention, but even with the first positioning mechanism to fix the drive shaft 2, it is difficult to avoid the carrier assembly from shaking around the rotating shaft 411 when installing and unloading the sand core. This will cause instability during installation and unloading of the sand core, difficulty in disassembly, and even worse, damage to the sand core during disassembly and assembly, affecting the efficiency and quality of sand core disassembly and assembly. Therefore, this embodiment is further optimized and improved.

[0044] like Figures 1 to 18 As shown, the bottom end of the support 11 is integrally extended with a base 1, and a slide groove 13 is vertically arranged on the support 11 and the base 1; the first positioning mechanism also includes a first cylinder 6, a first piston rod 61, a slider 62 and a slide plate 63, the first cylinder 6 is vertically fixed on the outer wall of the base 1, the first piston rod 61 is set in an L shape, the end of the first piston rod 61 is connected to the slider 62, the slider 62 is slidably arranged in the slide groove 13, the end of the slider 62 is provided with a slide plate 63, the slide plate 63 slides closely against the inner wall of the support 11 and the base 1; the clamping block 64 is fixedly connected to the slide plate 63. In this way, the lifting and lowering of the clamping block 64 can be controlled by the first cylinder 6 to cooperate with the triangular oblique rib 24.

[0045] like Figures 1 to 18 As shown, the loading assembly includes a triangular bracket 4 and a loading plate 3, the two ends of the loading plate 3 are respectively connected to the triangular bracket 4, and a sleeve 41 is provided at the upper end of the triangular bracket 4, and the sleeve 41 is provided on the rotating shaft 411. Specifically, a mounting groove 42 is provided at the bottom end of the triangular bracket 4, and the two ends of the loading plate 3 are arranged in the mounting groove 42; threaded holes 43 communicating with the mounting groove 42 are respectively provided on both sides of the bottom end of the triangular bracket 4, and the detachable connection between the triangular bracket 4 and the loading plate 3 can be achieved by screwing locking screws into the threaded holes 43. In addition, a loading groove 31 is provided in the loading plate 3 for limiting and fixing the sand core, and a plurality of overflow grooves 32 are provided in the loading groove 31 for overflow of the dipping liquid.

[0046] like Figures 1 to 18 As shown, further, the support 11 is provided with a second positioning mechanism, which includes a second cylinder 7, a fixing flange 71, a second piston rod 72 and a cross bar 73, and four latch pins 74 are provided on the cross bar 73; four object-carrying components are provided, and fixing blocks 44 are respectively provided on both sides of the bottom end of the triangular bracket 4, and pin holes 45 are provided on the fixing blocks 44. Figure 5 As shown, when two of the carrier assemblies rotate to a parallel position, the four pins 74 are respectively connected to the pin holes 45 of the two carrier assemblies rotated to a parallel position; the second cylinder 7 can drive the cross bar 73 to move, so that the pins 74 are inserted into the pin holes 45 to fix the two parallel carrier assemblies. Figure 5 As shown, it is in the dipping state at this time, the middle carrier assembly rotates into the dipping box 5 for dipping operation, and the carrier assemblies on both sides rotate to the horizontal state, respectively loading the un-dipping sand core and unloading the dipped sand core. Therefore, after designing the second positioning mechanism, the second positioning mechanism can be used to drive the latch 74 and the pin hole 45 of the carrier assembly to engage and completely fix the carrier assembly. While the sand core installation, sand core dipping and sand core unloading are carried out simultaneously, it is ensured that when the sand core is installed and unloaded, the carrier assembly will not shake with the rotating shaft 411 as the axis. In this way, the stability of the sand core during installation and unloading can be ensured, the sand core can be prevented from being damaged during disassembly and assembly, and the efficiency and quality of the sand core disassembly and assembly can be ensured.

[0047] Example 3

[0048] This embodiment further optimizes the design based on the embodiment 2.

[0049] like Figures 1 to 18As shown, the slide plate 63 is vertically provided with an avoidance groove 631, and the second piston rod 72 is slidably arranged on the inner wall of the avoidance groove 631; the second cylinder 7 is fixed to the outer wall of the support 11 through the fixing flange 71, the second cylinder 7 is arranged just above the first piston rod 61, and the second piston rod 72 is inserted into the slide groove 13, and the cross bar 73 is slidably arranged close to the slide plate 63. A limiting groove 641 is provided at the bottom end of the clamping block 64, and the cross bar 73 can be matched and arranged in the limiting groove 641.

[0050] like Fig.10 As shown, when the first cylinder 6 and the second cylinder 7 are contracted, the clamping block 64 is moved down away from the triangular oblique rib 24, and the cross bar 73 is clamped in the limiting groove 641. In this case, the clamping block 64 can limit the cross bar 73 to prevent the cross bar 73 from extending out and hindering the normal rotation of the drive shaft 2. The clamping block 64 is away from the triangular oblique rib 24, and the entire drive shaft 2, the object-carrying assembly, etc. can rotate.

[0051] like Figure 4 and Fig. 9 As shown, when the first cylinder 6 and the second cylinder 7 extend, the clamping block 64 rises and engages with the triangular oblique rib 24, and the cross bar 73 disengages from the limiting groove 641 and extends toward the object-carrying assembly, so that the latch 74 is locked into the pin hole 45. In this case, the clamping block 64 rises to limit and fix the triangular oblique rib 24, completing the fixation of the drive shaft 2; on this basis, the cross bar 73 extends to limit the two horizontally arranged object-carrying assemblies through the latch 74, preventing the object-carrying assemblies from shaking when the sand core is disassembled and assembled.

[0052] Such a design integrates the first clamping mechanism and the second clamping mechanism into an integrated design, and can realize their respective positioning and clamping functions without affecting each other's movements, and will not occupy a large space.

[0053] Furthermore, when the latch pin 74 is inserted into the pin hole 45 , the cross bar 73 is tightly arranged against the outer wall of the mounting seat 21 , so that the maximum travel limit of the cross bar 73 is achieved.

[0054] Furthermore, guide holes 14 are respectively provided on both sides of the support 11 , and the guide holes 14 are provided on both sides of the slide groove 13 . A guide rod 75 is provided on the cross bar 73 , and the guide rod 75 is slidably provided in the guide holes 14 to achieve sliding limitation of the cross bar 73 .

[0055] Furthermore, the upper end of the dipping box 5 is provided with an oblique opening 51, which is arranged on the rotation path of the carrier assembly. The existence of the oblique opening 51 can avoid the carrier assembly and reduce the width of the dipping box 5, ensuring that when the two carrier assemblies rotate to a horizontal state, they are located above or outside the two sides of the dipping box 5, so as to facilitate the disassembly and assembly of the sand core; secondly, the oblique opening 51 can drain and recover the overflowing dipping liquid.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sand core coating device, characterized in that: Includes dip box, support and carrier components, Supports are respectively arranged on both sides of the dipping box, drive shafts are rotatably arranged on the two supports, and mounting seats are symmetrically arranged on both sides of the drive shaft; A plurality of loading components are evenly distributed on the mounting seat, and the rotating shafts of the loading components are respectively rotatably connected to the mounting seats on both sides, and the driving shaft can rotate to drive the plurality of loading components to descend into the dipping box in sequence; A plurality of triangular oblique ribs are evenly distributed on the outer side of the mounting seat, and the plurality of triangular oblique ribs are all arranged on a fixed cylinder, and the fixed cylinder is connected to the outer wall of the driving shaft; the number of the triangular oblique ribs is the same as the number of the object-carrying components, and the triangular oblique ribs are respectively arranged corresponding to the rotating shaft; The support is provided with a first positioning mechanism, which includes a trapezoidal clamping block, an upper inclined surface of which is provided with an inclined slot, and the clamping block can rise and allow one of the triangular oblique ribs to be matched and arranged in the slot.

2. The sand core coating equipment according to claim 1, characterized in that: A base is integrally extended from the bottom end of the support, and a slide groove is vertically arranged on the support and the base; the first positioning mechanism also includes a first cylinder, a first piston rod, a slider and a slide plate, the first cylinder is vertically fixed on the outer wall of the base, the first piston rod is arranged in an L shape, the end of the first piston rod is connected to the slider, the slider is slidably arranged in the slide groove, and a slide plate is arranged at the end of the slider, and the slide plate slides close to the inner wall of the support and the base; the clamping block is fixedly connected to the slide plate.

3. The sand core coating device according to claim 2, characterized in that: The object-carrying assembly comprises a tripod bracket and an object-carrying plate, two ends of the object-carrying plate are respectively connected to the tripod bracket, and a sleeve is arranged at the upper end of the tripod bracket, and the sleeve is arranged on a rotating shaft.

4. The sand core coating device according to claim 3, characterized in that: The support is provided with a second positioning mechanism, the second positioning mechanism comprises a second cylinder, a second piston rod and a cross bar, and the cross bar is provided with four latches; There are four carrier components, and fixed blocks are respectively provided on both sides of the bottom end of the triangular bracket, and pin holes are provided on the fixed blocks; when two of the carrier components are rotated to parallel positions, four pins are respectively docked with the pin holes of the two carrier components rotated to parallel positions; the second cylinder can drive the cross bar to move, so that the pins are inserted into the pin holes to fix the two parallel carrier components.

5. The sand core coating device according to claim 4, characterized in that: The slide plate is vertically provided with an avoidance groove, and the second piston rod is slidably arranged on the inner wall of the avoidance groove; the second cylinder is fixed on the outer wall of the support, the second cylinder is arranged directly above the first piston rod, and the second piston rod is inserted into the slide groove; The cross bar is slidably arranged close to the skateboard; a limiting groove is arranged at the bottom end of the clamping block; when the first cylinder and the second cylinder contract, the clamping block descends away from the triangular oblique rib, and the cross bar is clamped in the limiting groove; when the first cylinder and the second cylinder extend, the clamping block rises and engages with the triangular oblique rib, and the cross bar is disengaged from the limiting groove and extends toward the direction of the loading assembly, so that the pin is clamped in the pin hole.

6. The sand core coating device according to claim 5, characterized in that: When the latch pin is inserted into the pin hole, the cross bar is tightly arranged against the outer wall of the mounting seat.

7. The sand core coating device according to claim 5, characterized in that: Guide holes are respectively arranged on both sides of the support, and a guide rod is arranged on the cross bar, and the guide rod is slidably arranged in the guide hole.

8. The sand core coating device according to claim 1, characterized in that: The upper end of the dipping box is provided with an oblique opening, and the oblique opening is arranged on the rotation path of the object-carrying component.

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