A sand core transfer fixture
By designing a clamping plate structure driven by an electric telescopic rod, the problem of insufficient contact area between the clamping plate and the sand core during sand core transportation is solved, uniform clamping is achieved, the risk of clamping damage is reduced, and the integrity of the sand core and the casting quality are ensured.
Patent Information
- Application Number
- CN202311094397.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-29
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2043-08-29
AI Technical Summary
During the sand core transportation process, when sand cores of different widths are clamped, the contact area between the clamping plate and the sand core is reduced, resulting in increased pressure on the clamping plate, increasing the possibility of clamping damage and affecting the subsequent pouring quality.
A sand core transfer fixture was designed, which adopted a clamping plate structure driven by an electric telescopic rod. Through the cooperation of the folding rod and the hinge block, it can achieve uniform clamping of sand cores of different widths, increase the contact area between the clamping plate and the sand core, and reduce the friction resistance through the ball bearing to ensure uniform distribution of the clamping force.
It effectively reduces the pressure of the splint on the sand core, reduces the risk of clamping damage, ensures the integrity of the sand core during transportation, and improves the quality of subsequent pouring.
Smart Images
Figure CN117358886B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of sand core transfer, in particular to a sand core transfer fixture. Background Art
[0002] Sand cores are materials used to create cores in foundry production. They are generally composed of a mixture of foundry sand, sand binder, and additives, among other molding materials, in a specific ratio. The majority of the core is surrounded by hot liquid metal in the mold, while the supporting and positioning portions are generally smaller. Therefore, in addition to possessing the properties of standard sand, core sand must also exhibit high strength, air permeability, yieldability, and collapsibility. Core sands are categorized by the binder used, including clay core sand, water glass core sand, oil core sand, synthetic resin core sand, and resin core sand. Simple cores are generally made from clay core sand. Complex cores with thin, fine cross-sections requiring high dry strength and good collapsibility are typically made from oil core sand, synthetic resin core sand, or resin core sand. Vegetable oil core sands can produce very smooth castings, but the materials used, such as tung oil, linseed oil, and modified rice bran oil, are scarce and expensive. Therefore, since 1963, China has widely adopted the residue from synthetic fatty acids produced by the soap industry as a binder. This type of core sand has dry strength, yield, and collapsibility similar to oil-core sand. When using oil-core sand and resin-coated core sand to manufacture sand cores, there are problems such as relatively low core strength before hardening, easy deformation, slow hardening speed, long production cycle, and the need for drying, which affect the dimensional accuracy and production efficiency of the castings. Core sands using resin as a binder include: self-hardening resin core sand, ester-hardened water glass core sand, coated sand core sand, hot core box core sand, and cold core box core sand. Self-hardening binder core sand can be used for small-batch casting production, while hot core box core sand and cold core box core sand should be used for large-batch casting production. Coated sand core sand can be used for castings with special requirements.
[0003] After the sand core is manufactured, the subsequent casting of parts can be carried out. Some sand cores are regular rectangles, but due to the different shapes of the parts to be cast, some parts are not uniform in width or have a large difference in width. In order to save the raw materials for the manufacture of sand cores, some manufacturers will produce sand cores that match the width of the parts, that is, sand cores of varying widths. During the sand core transportation process, the splints of some transfer fixtures are horizontal. When such fixtures clamp and transport sand cores of varying widths, the horizontal splints cannot contact the surface of the sand core in the depression, thereby reducing the contact area between the horizontal splints and the sand core. The clamping force required for the sand core transportation remains unchanged, thereby increasing the pressure of the splints on the sand core, increasing the possibility of the splints damaging the sand core, which is not conducive to the subsequent casting of the sand core and may also affect the quality of subsequent parts.
[0004] In view of this situation, the purpose of the present invention is to provide a sand core transfer clamp that can clamp the narrower and wider parts of the sand core, thereby increasing the contact area between the clamp and the sand core, reducing the pressure of the clamp on the sand core, and reducing the possibility of the internal structure of the sand core being damaged by the clamp. Summary of the Invention
[0005] In response to the above problems, the present application provides a sand core transfer fixture to solve the problem of sand cores of different widths. During the sand core transfer process, the clamps of some transfer fixtures are horizontal. When such clamps clamp and transfer sand cores of different widths, the horizontal clamps cannot contact the surface of the sand core at the recessed part, thereby reducing the contact area between the horizontal clamps and the sand core. The clamping force required for sand core transfer remains unchanged, thereby increasing the pressure of the clamps on the sand core, increasing the possibility of the clamps damaging the sand core:
[0006] A sand core transfer fixture comprises a crane and a transfer mechanism, wherein the transfer mechanism is installed on the lower side of the top of the crane;
[0007] The transfer mechanism includes an electric telescopic rod, a lower fixed plate is fixedly installed on the output end of the electric telescopic rod, a plurality of inner movable columns are evenly installed on the bottom of the lower fixed plate, an arch frame is slidably installed on the outside of the inner movable column, and a folding rod is slidably installed through the arch frame near both ends, and the two folding rods are staggered and rotated away from each other to one side to install a first storage rod, a first plug-in block is slidably installed inside the first storage rod, a third spring is fixedly connected between the first plug-in block and the inner side of the first storage rod, and a hinge block is installed on the bottom ends of the two first plug-in blocks for common rotation, a second storage rod is slidably installed on the outside of the folding rod near the bottom end, and a splint is fixedly installed on the bottom of the second storage rod.
[0008] Furthermore, a card column is symmetrically and slidingly installed on the outer side of the folding rod near the bottom, an electromagnet is fixedly installed on one end of the card column located inside the folding rod, and a friction plate is fixedly installed on one end of the card column located outside the folding rod. The side where the friction plate and the second storage rod are close to each other are frosted, and a card slot is symmetrically opened on the outer side of the second storage rod near the top, and the card column is slidably installed in the card slot.
[0009] Furthermore, a plurality of second sliding grooves are provided at the bottom of the lower fixed plate, a second slider is slidably installed in the middle of the second sliding groove, a second spring is symmetrically fixedly installed between the second slider and the inner side of the second sliding groove, a second limiting column is fixedly installed on both symmetrical sides of the second slider, and the second limiting column is slidably installed in the lower fixed plate.
[0010] Furthermore, an upper fixed plate is fixedly installed on the outside of the electric telescopic rod, and a plurality of first sliding grooves are symmetrically opened at the bottom of the upper fixed plate. A first slider is slidably installed inside the first sliding groove, and a first spring is symmetrically fixedly installed between the first slider and the inner side of the first sliding groove. First limiting columns are fixedly installed on both symmetrical sides of the first slider, and the first limiting column away from the upper fixed plate is slidably installed in the upper fixed plate, and the first limiting column close to the upper fixed plate is slidably installed in the upper fixed plate.
[0011] Furthermore, outer movable columns are symmetrically fixedly installed on the top of the arch frame, and the top of the outer movable column is fixedly installed on the bottom of the first sliding block.
[0012] Furthermore, the second sliding block and the second sliding groove are both in an inverted trapezoidal shape, and the first sliding block and the first sliding groove are both in an inverted trapezoidal shape.
[0013] Furthermore, a plurality of balls are rotatably inlaid on the bottom of the splint, a base plate is installed below the splint, the bottom of the base plate is fixedly installed on the ground, and a sand core is slidably installed on the top of the base plate.
[0014] Furthermore, the second spring is slidably sleeved on the periphery of the second limiting column, and the first spring is slidably sleeved on the periphery of the first limiting column.
[0015] Furthermore, the distance between the two clamping plates is greater than the width of the sand core.
[0016] Furthermore, the crane includes a lift, the lift is fixedly installed on the top of the electric telescopic rod, a translation machine is slidably installed on the top of the lift, a fixed frame is slidably installed on the bottom of the translation machine, and the bottom of the fixed frame is fixedly installed on the ground.
[0017] The beneficial effects of the present invention are as follows:
[0018] (1) The present invention relates to a sand core transfer fixture. The telescopic end of the electric telescopic rod is extended, and the splints move toward each other. The splints first contact and clamp the wide part of the sand core, and then the hinge block directly above it continues to move downward, driving the first plug-in block directly above it to gradually slide out of the first receiving rod, thereby making the folding rod directly above it no longer move, that is, the splint at the wide part of the sand core no longer move, and the third spring is stretched; the telescopic end of the electric telescopic rod continues to extend, and the splints at the narrow part of the sand core continue to move toward each other, and the splint contacts and clamps the narrow part of the sand core, and then the hinge block directly above it continues to move downward, driving the first plug-in block directly above it to gradually slide out of the first receiving rod, thereby making the folding rod directly above it no longer move, that is, the splint at the narrow part of the sand core no longer move, and the telescopic end of the electric telescopic rod stops extending, so that both the wide part and the narrow part of the sand core can contact the splint, thereby increasing the contact area between the splint and the sand core, thereby reducing the pressure of the splint on the sand core, thereby reducing the possibility of the sand core being clamped and damaged.
[0019] (2) The present invention describes a clamp for transferring sand cores. The telescopic end of the electric telescopic rod is extended, and the clamps move toward each other. The clamps contact and clamp the sand core, and the hinge block continues to move downward, driving the first plug block to gradually slide out of the first storage rod, thereby making the folding rod no longer move, that is, the clamps no longer move, and the third spring is stretched to ensure that the clamping force on the sand core is not too large, thereby reducing the possibility of the sand core being damaged by clamping.
[0020] (3) The present invention relates to a sand core transfer fixture, in which a plurality of balls are mounted on the bottom of a rotatable splint. When the splint moves downward and contacts the base plate, the sliding friction between the splint and the base plate is converted into rolling friction, thereby reducing frictional resistance and making the splint move more smoothly.
[0021] (4) The sand core transfer fixture described in the present invention, when the sand core is placed with a horizontal deviation or the narrow part and the wide part of the sand core are not coaxial, causes one side of the sand core to contact the clamp first, and the clamp is subjected to a reaction force, thereby causing the inner movable column directly above it to drive the second slider to slide inside the second slide groove, and at the same time, the two outer movable columns directly above it drive the first slider to slide inside the first slide groove, ensuring that the two clamps in the same group can contact and clamp the sand core. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The present invention will be further described below with reference to the accompanying drawings and examples.
[0023] Figure 1 A schematic diagram of the overall structure of a sand core transfer fixture provided by the present invention;
[0024] Figure 2 A schematic diagram of the transfer mechanism structure of a sand core transfer fixture provided by the present invention;
[0025] Figure 3 A schematic diagram of the internal structure of a transfer mechanism of a sand core transfer fixture provided by the present invention;
[0026] Figure 4 for Figure 3 A magnified view of point A;
[0027] Figure 5 for Figure 3 Enlarged view of point B;
[0028] Figure 6 for Figure 3 Enlarged view of point C;
[0029] Figure 7 for Figure 3 Enlarged view of point D;
[0030] Figure 8 A schematic diagram of the internal structure of a folding rod of a sand core transfer fixture provided by the present invention.
[0031] In the figure: 1. crane; 11. fixed frame; 12. translation machine; 13. elevator; 2. transfer mechanism; 21. electric telescopic rod; 22. upper fixed plate; 23. outer moving column; 24. lower fixed plate; 25. inner moving column; 26. arch frame; 27. first slide; 28. first slider; 29. first spring; 210. first limiting column; 211. second slide; 212. second slider; 213. second spring; 214. second limiting column; 215. folding rod; 216. hinge block; 217. first plug block; 218. first receiving rod; 219. third spring; 220. second receiving rod; 221. slot; 222. clamping column; 223. splint; 224. ball; 225. sand core; 226. bottom plate; 227. friction plate; 228. electromagnet. DETAILED DESCRIPTION
[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly introduced below in conjunction with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.
[0033] Example 1:
[0034] like Figure 1-8 As shown, an embodiment of the present invention provides a sand core transfer fixture, comprising a crane 1 and a transfer mechanism 2. The transfer mechanism 2 is installed on the lower side of the top of the crane 1, and the crane 1 is used to adjust the level and height of the transfer mechanism 2;
[0035] The transfer mechanism 2 includes an electric telescopic rod 21, and a lower fixed plate 24 is fixedly installed at the output end of the electric telescopic rod 21. The electric telescopic rod 21 is used to drive the lower fixed plate 24 to move up and down. A plurality of inner moving columns 25 are evenly installed at the bottom of the lower fixed plate 24. An arch frame 26 is slidably installed on the outer side of the inner moving column 25. A folding rod 215 is slidably installed near both ends of the arch frame 26. The two folding rods 215 are staggered and rotated away from each other to one side to install a first receiving rod 218. The first receiving rod 218 is slidably installed inside. An insert block 217, a third spring 219 is fixedly connected between the first insert block 217 and the inner side of the first storage rod 218, which is used to extend the length between the first storage rod 218 and the first insert block 217, and is also used to reset the first insert block 217. The bottom ends of the two first insert blocks 217 are jointly rotated and installed with a hinge block 216, which is used to link the inner movable column 25 and the first insert block 217. The second storage rod 220 is slidably installed on the outside near the bottom end of the folding rod 215, and a splint 223 is fixedly installed on the bottom of the second storage rod 220.
[0036] Specifically, a plurality of balls 224 are rotatably inlaid on the bottom of the splint 223. When the splint 223 moves down and contacts the bottom plate 226, the sliding friction between the splint 223 and the bottom plate 226 is changed to rolling friction, thereby reducing the friction resistance and making the movement of the splint 223 smoother. A bottom plate 226 is installed under the splint 223. The bottom of the bottom plate 226 is fixedly installed on the ground, and a sand core 225 is slidably installed on the top of the bottom plate 226.
[0037] Specifically, the outer side of the folding rod 215 near the bottom is symmetrically slidably installed with a card column 222, and one end of the card column 222 located inside the folding rod 215 is fixedly installed with an electromagnet 228, and the end of the card column 222 located outside the folding rod 215 is fixedly installed with a friction plate 227. The side of the friction plate 227 and the second storage rod 220 close to each other are both frosted. The outer side of the second storage rod 220 near the top is symmetrically penetrated with a card slot 221, and the card column 222 is slidably installed in the card slot 221. When the splint 223 is restricted and cannot move downward, that is, the second storage rod 2 20 is restricted and cannot move downward, the folding rod 215 can continue to move downward into the second storage rod 220. When the folding rod 215 moves upward, the two electromagnets 228 are energized to attract each other, so that the two friction plates 227 approach each other, fit and squeeze the outside of the second storage rod 220, and the friction between the friction plates 227 and the outside of the second storage rod 220 is greatly increased, so that the second storage rod 220 and the folding rod 215 move upward synchronously, and the friction between all friction plates 227 and the second storage rod 220 is greater than the sum of the gravity of the second storage rod 220, the splint 223 and the sand core 225.
[0038] Specifically, the distance between the two clamping plates 223 is greater than the width of the sand core 225 .
[0039] In this embodiment, the staff activates the electric telescopic rod 21, and the telescopic end of the electric telescopic rod 21 extends, driving the lower fixed plate 24 to move downward, thereby driving the inner movable column 25 and the hinge block 216 to move downward. The hinge block 216 drives the two folding rods 215 to move closer to each other and downward through the first insert block 217 and the first storage rod 218. The folding rod 215 drives the second storage rod 220 and the clamping plate 223 to move synchronously. When the ball 224 at the bottom of the clamping plate 223 contacts the bottom plate 226, the folding rod 215 continues to move downward and enters the interior of the second storage rod 220.
[0040] The telescopic end of the electric telescopic rod 21 continues to extend, and the clamping plates 223 continue to move toward each other. The clamping plates 223 first contact and clamp the wide part of the sand core 225, and then the hinge block 216 directly above it continues to move downward, driving the first plug block 217 directly above it to gradually slide out of the first storage rod 218, thereby making the folding rod 215 directly above it no longer move, that is, the clamping plates 223 at the wide part of the sand core 225 no longer move, and the third spring 219 is stretched, ensuring that the clamping force on the wide part of the sand core 225 is not too large, thereby reducing the possibility of the sand core 225 being clamped and damaged;
[0041] The telescopic end of the electric telescopic rod 21 continues to extend, and the splint 223 at the narrow part of the sand core 225 continues to move closer to each other. The splint 223 contacts and clamps the narrow part of the sand core 225, and then the hinge block 216 directly above it continues to move downward, driving the first plug block 217 directly above it to gradually slide out of the first storage rod 218, thereby making the folding rod 215 directly above it no longer move, that is, the splint 223 at the narrow part of the sand core 225 no longer move, and the third spring 219 is stretched to ensure that the clamping force on the narrow part of the sand core 225 is not too large, thereby reducing the possibility of the sand core 225 being clamped and damaged. The telescopic end of the electric telescopic rod 21 stops extending, so that the wide and narrow parts of the sand core 225 can both contact the splint 223, increasing the contact area between the splint 223 and the sand core 225, thereby reducing the pressure of the splint 223 on the sand core 225, thereby reducing the possibility of the sand core 225 being clamped and damaged.
[0042] Example 2:
[0043] like Figure 1-8 As shown, an embodiment of the present invention provides a sand core transfer fixture, comprising a crane 1 and a transfer mechanism 2. The transfer mechanism 2 is installed on the lower side of the top of the crane 1, and the crane 1 is used to adjust the level and height of the transfer mechanism 2;
[0044] The transfer mechanism 2 includes an electric telescopic rod 21, and a lower fixed plate 24 is fixedly installed at the output end of the electric telescopic rod 21. The electric telescopic rod 21 is used to drive the lower fixed plate 24 to move up and down. A plurality of inner moving columns 25 are evenly installed at the bottom of the lower fixed plate 24. An arch frame 26 is slidably installed on the outer side of the inner moving column 25. A folding rod 215 is slidably installed near both ends of the arch frame 26. The two folding rods 215 are staggered and rotated away from each other to one side to install a first receiving rod 218. The first receiving rod 218 is slidably installed inside. An insert block 217, a third spring 219 is fixedly connected between the first insert block 217 and the inner side of the first storage rod 218, which is used to extend the length between the first storage rod 218 and the first insert block 217, and is also used to reset the first insert block 217. The bottom ends of the two first insert blocks 217 are jointly rotated and installed with a hinge block 216, which is used to link the inner movable column 25 and the first insert block 217. The second storage rod 220 is slidably installed on the outside near the bottom end of the folding rod 215, and a splint 223 is fixedly installed on the bottom of the second storage rod 220.
[0045] Specifically, a plurality of balls 224 are rotatably inlaid on the bottom of the splint 223. When the splint 223 moves down and contacts the bottom plate 226, the sliding friction between the splint 223 and the bottom plate 226 is changed to rolling friction, thereby reducing the friction resistance and making the movement of the splint 223 smoother. A bottom plate 226 is installed under the splint 223. The bottom of the bottom plate 226 is fixedly installed on the ground, and a sand core 225 is slidably installed on the top of the bottom plate 226.
[0046] Specifically, a plurality of second sliding grooves 211 are provided at the bottom of the lower fixed plate 24, a second slider 212 is slidably installed in the middle of the second sliding groove 211, a second spring 213 is symmetrically fixedly installed between the second slider 212 and the inner side of the second sliding groove 211, for resetting the second slider 212, and second limiting columns 214 are fixedly installed on both symmetrical sides of the second slider 212, for limiting the deformation direction of the second spring 213, and the second limiting columns 214 are slidably installed in the lower fixed plate 24.
[0047] Specifically, an upper fixed plate 22 is fixedly installed on the outside of the electric telescopic rod 21, and a plurality of first sliding grooves 27 are symmetrically opened at the bottom of the upper fixed plate 22. A first slider 28 is slidably installed inside the first sliding groove 27, and a first spring 29 is symmetrically fixedly installed between the first slider 28 and the inner side of the first sliding groove 27 for resetting the first slider 28. First limiting columns 210 are fixedly installed on both symmetrical sides of the first slider 28 for limiting the deformation direction of the first spring 29. The first limiting column 210 away from the upper fixed plate 22 is slidably installed in the upper fixed plate 22, and the first limiting column 210 close to the upper fixed plate 22 is slidably installed in the upper fixed plate 22.
[0048] Specifically, the second sliding block 212 and the second sliding groove 211 are both in the shape of an inverted trapezoid, and the first sliding block 28 and the first sliding groove 27 are both in the shape of an inverted trapezoid.
[0049] Specifically, the outer movable columns 23 are symmetrically fixedly installed on the top of the arch frame 26 , and the top of the outer movable columns 23 is fixedly installed on the bottom of the first sliding block 28 .
[0050] Specifically, the second spring 213 is slidably sleeved on the periphery of the second limiting column 214 , and the first spring 29 is slidably sleeved on the periphery of the first limiting column 210 .
[0051] In this embodiment, when the sand core 225 is placed with a horizontal deviation or the narrow part and the wide part of the sand core 225 are not coaxial, one side of the sand core 225 will first contact the clamping plate 223, and the clamping plate 223 will be subjected to a reaction force, so that the inner movable column 25 directly above it drives the second slider 212 to slide inside the second slide groove 211, and at the same time, the two outer movable columns 23 directly above it drive the first slider 28 to slide inside the first slide groove 27, ensuring that the two clamping plates 223 in the same group can contact and clamp the sand core 225.
[0052] Example 3:
[0053] like Figure 1-8 As shown, an embodiment of the present invention provides a sand core transfer fixture, comprising a crane 1 and a transfer mechanism 2. The transfer mechanism 2 is installed on the lower side of the top of the crane 1, and the crane 1 is used to adjust the level and height of the transfer mechanism 2;
[0054] The transfer mechanism 2 includes an electric telescopic rod 21, and a lower fixed plate 24 is fixedly installed at the output end of the electric telescopic rod 21. The electric telescopic rod 21 is used to drive the lower fixed plate 24 to move up and down. A plurality of inner moving columns 25 are evenly installed at the bottom of the lower fixed plate 24. An arch frame 26 is slidably installed on the outer side of the inner moving column 25. A folding rod 215 is slidably installed near both ends of the arch frame 26. The two folding rods 215 are staggered and rotated away from each other to one side to install a first receiving rod 218. The first receiving rod 218 is slidably installed inside. An insert block 217, a third spring 219 is fixedly connected between the first insert block 217 and the inner side of the first storage rod 218, which is used to extend the length between the first storage rod 218 and the first insert block 217, and is also used to reset the first insert block 217. The bottom ends of the two first insert blocks 217 are jointly rotated and installed with a hinge block 216, which is used to link the inner movable column 25 and the first insert block 217. The second storage rod 220 is slidably installed on the outside near the bottom end of the folding rod 215, and a splint 223 is fixedly installed on the bottom of the second storage rod 220.
[0055] Specifically, a plurality of balls 224 are rotatably inlaid on the bottom of the splint 223. When the splint 223 moves down and contacts the bottom plate 226, the sliding friction between the splint 223 and the bottom plate 226 is changed to rolling friction, thereby reducing the friction resistance and making the movement of the splint 223 smoother. A bottom plate 226 is installed under the splint 223. The bottom of the bottom plate 226 is fixedly installed on the ground, and a sand core 225 is slidably installed on the top of the bottom plate 226.
[0056] Specifically, the traveling crane 1 includes a lift 13, and the lift 13 is fixedly installed on the top of the electric telescopic rod 21 for driving the transfer mechanism 2 to move up and down. A translation machine 12 is slidably installed on the top of the lift 13 for driving the transfer mechanism 2 to move horizontally. A fixed frame 11 is slidably installed on the bottom of the translation machine 12, and the bottom of the fixed frame 11 is fixedly installed on the ground.
[0057] In this embodiment, the processed sand core 225 is placed on the base plate 226. The staff starts the translation machine 12, and the translation machine 12 moves on the slide rail at the top of the fixed frame 11, thereby driving the transfer mechanism 2 to move directly above the sand core 225. The staff starts the elevator 13, and the elevator 13 drives the transfer mechanism 2 down to a suitable distance, and the elevator 13 stops working.
[0058] The staff starts the elevator 13 in reverse, and the elevator 13 drives the transfer mechanism 2 to move upward, and then drives the folding rod 215 and the clamping column 222 to move upward and reset, and then drives the splint 223 and the sand core 225 to move upward. The elevator 13 drives the transfer mechanism 2 to move up to a suitable height, the elevator 13 stops working, and then starts the translation machine 12 to move the elevator 13 and the transfer mechanism 2 to the required position.
[0059] The staff starts the elevator 13, and the elevator 13 drives the transfer mechanism 2 to move downward, so that the bottom of the sand core 225 contacts the receiving platform. The staff starts the electric telescopic rod 21 in reverse, and the telescopic end of the electric telescopic rod 21 shortens, driving the lower fixed plate 24 to move upward, and then driving the inner movable column 25 and the hinge block 216 to move upward. The first plug block 217 is reset under the action of the third spring 219, and partially enters the first receiving rod 218. The hinge block 216 drives the folding rod 215 to move obliquely upward through the first plug block 217 and the first receiving rod 218, and then drives the splints 223 to move away from each other, contacting the clamping action of the sand core 225.
[0060] How it works:
[0061] Adjustment of the position of the transfer mechanism 2: The processed sand core 225 is placed on the base plate 226. The staff starts the translation machine 12, and the translation machine 12 moves on the slide rail at the top of the fixed frame 11, thereby driving the transfer mechanism 2 to move directly above the sand core 225. The staff starts the elevator 13, and the elevator 13 drives the transfer mechanism 2 down to the appropriate distance, and the elevator 13 stops working.
[0062] The clamping process of the transfer mechanism 2: The staff activates the electric telescopic rod 21, and the telescopic end of the electric telescopic rod 21 extends, driving the lower fixed plate 24 to move downward, and then driving the inner movable column 25 and the hinge block 216 to move downward. The hinge block 216 drives the two folding rods 215 to move closer to each other and downward through the first insertion block 217 and the first storage rod 218. The folding rod 215 drives the second storage rod 220 and the clamping plate 223 to move synchronously. When the ball 224 at the bottom of the clamping plate 223 contacts the bottom plate 226, the folding rod 215 continues to move downward and enters the interior of the second storage rod 220.
[0063] The telescopic end of the electric telescopic rod 21 continues to extend, and the clamping plates 223 continue to move toward each other. The clamping plates 223 first contact and clamp the wide part of the sand core 225, and then the hinge block 216 directly above it continues to move downward, driving the first plug block 217 directly above it to gradually slide out of the first storage rod 218, thereby making the folding rod 215 directly above it no longer move, that is, the clamping plates 223 at the wide part of the sand core 225 no longer move, and the third spring 219 is stretched, ensuring that the clamping force on the wide part of the sand core 225 is not too large, thereby reducing the possibility of the sand core 225 being clamped and damaged;
[0064] The telescopic end of the electric telescopic rod 21 continues to extend, and the splint 223 at the narrow part of the sand core 225 continues to move closer to each other. The splint 223 contacts and clamps the narrow part of the sand core 225, and then the hinge block 216 directly above it continues to move downward, driving the first plug block 217 directly above it to gradually slide out of the first storage rod 218, thereby making the folding rod 215 directly above it no longer move, that is, the splint 223 at the narrow part of the sand core 225 no longer move, and the third spring 219 is stretched to ensure that the clamping force on the narrow part of the sand core 225 is not too large, thereby reducing the possibility of the sand core 225 being clamped and damaged. The telescopic end of the electric telescopic rod 21 stops extending, so that the wide and narrow parts of the sand core 225 can both contact the splint 223, increasing the contact area between the splint 223 and the sand core 225, thereby reducing the pressure of the splint 223 on the sand core 225, thereby reducing the possibility of the sand core 225 being clamped and damaged.
[0065] The staff starts the electromagnet 228, and the two electromagnets 228 are energized to attract each other, so that the two friction plates 227 approach each other, fit and squeeze the outer side of the second storage rod 220, and the friction between the friction plates 227 and the outer side of the second storage rod 220 is greatly increased, so that the second storage rod 220 and the folding rod 215 move up synchronously, and the elevator 13 is started in the reverse direction. The elevator 13 drives the transfer mechanism 2 to move up, and then drives the folding rod 215 and the clamping column 222 to move up and reset, and then drives the splint 223 and the sand core 225 to move up. The elevator 13 drives the transfer mechanism 2 to move up to a suitable height, the elevator 13 stops working, and then starts the translation machine 12 to move the elevator 13 and the transfer mechanism 2 to the required position.
[0066] The process of releasing the clamping of the sand core 225: the staff starts the elevator 13, and the elevator 13 drives the transfer mechanism 2 to move downward, so that the bottom of the sand core 225 contacts the receiving platform, and the two electromagnets 228 are energized in reverse to repel each other, so that the two friction plates 227 move away from each other, and the staff reversely starts the electric telescopic rod 21, and the telescopic end of the electric telescopic rod 21 shortens, driving the lower fixed plate 24 to move upward, and then driving the inner movable column 25 and the hinge block 216 to move upward, and the first plug block 217 is reset under the action of the third spring 219, and partially enters the first receiving rod 218. The hinge block 216 drives the folding rod 215 to move obliquely upward through the first plug block 217 and the first receiving rod 218, and then drives the splints 223 to move away from each other, contacting the clamping action of the sand core 225, and the second spring 213 drives the second slider 212 to reset, and the first spring 29 drives the first slider 28 to reset.
[0067] When the sand core 225 is placed with a horizontal deviation or the narrow part and the wide part of the sand core 225 are not coaxial, one side of the sand core 225 will first contact the clamping plate 223, and the clamping plate 223 will be subjected to a reaction force, so that the inner movable column 25 directly above it drives the second slider 212 to slide inside the second slide groove 211, and at the same time, the two outer movable columns 23 directly above it drive the first slider 28 to slide inside the first slide groove 27, ensuring that the two clamping plates 223 in the same group can contact and clamp the sand core 225.
[0068] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.
Claims
1. A sand core transfer fixture, comprising a crane (1) and a transfer mechanism (2), characterized in that: A transfer mechanism (2) is installed on the lower side of the top of the crane (1); The transfer mechanism (2) includes an electric telescopic rod (21), a lower fixed plate (24) is fixedly installed at the output end of the electric telescopic rod (21), a plurality of inner movable columns (25) are evenly installed at the bottom of the lower fixed plate (24), an arch frame (26) is slidably installed on the outer side of the inner movable column (25), a folding rod (215) is slidably installed near both ends of the arch frame (26), two folding rods (215) are staggered and rotated away from each other on one side and a first receiving rod (218) is installed, a first plug block (217) is slidably installed inside the first receiving rod (218), a third spring (219) is fixedly connected between the first plug block (217) and the inner side of the first receiving rod (218), a hinge block (216) is rotatably installed at the bottom ends of the two first plug blocks (217), a second receiving rod (220) is slidably installed on the outer side of the folding rod (215) near the bottom end, and a clamping plate (223) is fixedly installed at the bottom of the second receiving rod (220); A clamping column (222) is symmetrically and slidably mounted on the outer side of the folding rod (215) near the bottom, an electromagnet (228) is fixedly mounted on one end of the clamping column (222) located inside the folding rod (215), a friction plate (227) is fixedly mounted on one end of the clamping column (222) located outside the folding rod (215), and the side of the friction plate (227) and the second receiving rod (220) close to each other are both frosted, and a clamping groove (221) is symmetrically opened and penetrated on the outer side of the second receiving rod (220) near the top, and the clamping column (222) is slidably mounted in the clamping groove (221); A plurality of second slide grooves (211) are provided at the bottom of the lower fixed plate (24), a second slider (212) is slidably installed in the middle of the second slide groove (211), a second spring (213) is symmetrically fixedly installed between the second slider (212) and the inner side of the second slide groove (211), and a second limiting column (214) is fixedly installed on both symmetrical sides of the second slider (212), and the second limiting column (214) is slidably installed in the lower fixed plate (24).
2. A sand core transfer fixture according to claim 1, characterized in that: An upper fixed plate (22) is fixedly installed on the outer side of the electric telescopic rod (21), and a plurality of first sliding grooves (27) are symmetrically opened at the bottom of the upper fixed plate (22). A first slider (28) is slidably installed inside the first sliding groove (27), and a first spring (29) is symmetrically fixedly installed between the first slider (28) and the inner side of the first sliding groove (27). First limiting columns (210) are fixedly installed on both symmetrical sides of the first slider (28), and the first limiting column (210) away from the upper fixed plate (22) is slidably installed in the upper fixed plate (22), and the first limiting column (210) close to the upper fixed plate (22) is slidably installed in the upper fixed plate (22).
3. A sand core transfer fixture as claimed in claim 2, characterized in that: An outer movable column (23) is symmetrically fixedly mounted on the top of the arch frame (26), and the top of the outer movable column (23) is fixedly mounted on the bottom of the first sliding block (28).
4. A sand core transfer fixture as claimed in claim 3, characterized in that: The second sliding block (212) and the second sliding groove (211) are both in the shape of an inverted trapezoid, and the first sliding block (28) and the first sliding groove (27) are both in the shape of an inverted trapezoid.
5. The sand core transfer fixture according to claim 4, characterized in that: A plurality of balls (224) are rotatably mounted on the bottom of the splint (223), a bottom plate (226) is mounted below the splint (223), the bottom of the bottom plate (226) is fixedly mounted on the ground, and a sand core (225) is slidably mounted on the top of the bottom plate (226).
6. The sand core transfer fixture according to claim 5, characterized in that: The second spring (213) is slidably sleeved on the periphery of the second limiting column (214), and the first spring (29) is slidably sleeved on the periphery of the first limiting column (210).
7. A sand core transfer fixture as claimed in claim 6, characterized in that: The distance between the two clamping plates (223) is greater than the width of the sand core (225).
8. The sand core transfer fixture according to claim 7, characterized in that: The traveling crane (1) includes a lift (13), the lift (13) is fixedly mounted on the top of the electric telescopic rod (21), a translation machine (12) is slidably mounted on the top of the lift (13), a fixed frame (11) is slidably mounted on the bottom of the translation machine (12), and the bottom of the fixed frame (11) is fixedly mounted on the ground.