Sand core clamping mechanism and sand box assembling system

Abstract

The utility model belongs to the technical field of sand box assembling, and discloses a sand core clamping mechanism and a sand box assembling system.The sand core clamping mechanism is characterized in that a movable assembly comprises two movable parts, and the two movable parts are arranged on a mounting base in a sliding mode in the first direction; the clamping jaw assembly comprises two clamping jaws, one clamping jaw is arranged on one movable part in a sliding mode in the second direction, the other clamping jaw is arranged on the other movable part in a sliding mode in the second direction, and the first direction, the second direction and the vertical direction are perpendicular in pairs; the first driving piece is used for driving the two movable pieces to get close to each other or get away from each other in the first direction, and when the two movable pieces get close to each other, the two clamping jaws of the clamping jaw assembly can clamp the sand core in the first direction; and the second driving part is used for driving the two clamping jaws of the clamping jaw assemblies to slide in the second direction at the same time, and the sand core clamping mechanism can drive the two clamping jaw assemblies to slide through the second driving part before clamping the sand core, so that the clamping positions of the clamping jaws on the sand core are changed.

Description

Technical Field

[0001] The utility model relates to the technical field of sand box assembly, in particular to a sand core clamping mechanism and a sand box assembly system. Background Art

[0002] In the casting process, sand boxes and sand cores are usually required. The sand box is a kind of casting process equipment, which is mainly used for transporting sand cores, pouring molten metal and castings during the molding and assembly operations in the foundry workshop. The sand core is a solid structure with a special shape made by mixing casting sand, resin and some additives in a certain proportion. It is used to form the inner cavity, holes and outer shape of the casting and other parts where sand cannot be produced.

[0003] During the assembly process of the sand box, the sand core needs to be placed in the mold cavity of the sand box. In this regard, the prior art provides an automatic core setting robot, which is provided with two left clamping claws and a right clamping claw. The two left clamping claws can move in the front-to-back direction to clamp the front and rear sides of the sand core, and the right clamping claw can move in the left-to-right direction to clamp the right side of the sand core, thereby completing the clamping of the sand core. However, the left clamping claw cannot move in the left-to-right direction, and the right clamping claw cannot move in the front-to-back direction, that is, the clamping positions of the two left clamping claws and the right clamping claw for the sand core are fixed, and neither of them can adjust the clamping position of the sand core, and it is difficult to adapt to the changes in the placement position of the sand core on the roller. Utility Model Content

[0004] According to one aspect of the utility model, the utility model provides a sand core clamping mechanism to solve the problem that the prior art cannot adjust the clamping position of the sand core and is difficult to adapt to the change of the placement position of the sand core on the roller.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sand core clamping mechanism, used for clamping the sand core; comprising:

[0007] Mounting seat;

[0008] A movable assembly, comprising two movable parts, both of which are slidably disposed on the mounting seat along a first direction;

[0009] The clamping jaw assembly comprises two clamping jaws, wherein one of the clamping jaws is slidably disposed on one of the movable members along the second direction, and the other clamping jaw is slidably disposed on the other movable member along the second direction, and the first direction, the second direction and the vertical direction are perpendicular to each other;

[0010] A first driving member, used for driving the two movable members to approach each other or to move away from each other along a first direction, and when the two movable members approach each other, the two clamping jaws of the clamping jaw assembly can clamp the sand core along the first direction;

[0011] The second driving member is used for simultaneously driving the two clamping jaws of the clamping jaw assembly to slide along the second direction.

[0012] As a preferred solution of the sand core clamping mechanism, the first driving member includes a first motor, a first screw rod and a second screw rod, the output end of the first motor is connected to the first screw rod, the first screw rod and the second screw rod are both rotatably arranged on the mounting seat, and the thread rotation directions are opposite, the first screw rod and the second screw rod are synchronously rotatably connected, the first screw rod is threadedly connected to one of the movable parts, and the second screw rod is threadedly connected to the other movable part.

[0013] As a preferred solution of the sand core clamping mechanism, the movable components and the first driving members are provided in plurality, the plurality of the movable components are connected to the plurality of the first driving members in a one-to-one correspondence, any two adjacent movable components are spaced apart along the second direction, and the plurality of the movable components are provided with the clamping jaw assembly.

[0014] As a preferred solution of the sand core clamping mechanism, the clamping jaw assembly also includes a guide rod and a transmission block. The guide rod is slidably arranged in a first direction through the two clamping jaws. The guide rod is fixedly connected to the transmission block. The second driving member is used to drive the transmission block to move in a second direction to simultaneously drive the two clamping jaws to move.

[0015] As a preferred solution of the sand core clamping mechanism, the plurality of movable components are connected to a plurality of clamping jaw components, and the plurality of clamping jaw components located in the same movable component are sequentially spaced apart along the second direction.

[0016] As a preferred solution of the sand core clamping mechanism, the movable component and the second driving component are each provided with two, and the two movable components are each connected to the two clamping jaw assemblies. Among the four clamping jaw assemblies, along the second direction, the two clamping jaw assemblies located in the middle are middle clamping jaw assemblies, and the two clamping jaw assemblies located at both ends are end clamping jaw assemblies; the second driving component comprises a second motor, a third screw rod and a fourth screw rod, the output end of the second motor is connected to the third screw rod, the third screw rod and the fourth screw rod are both rotatably arranged on the mounting seat, and the thread rotation directions are opposite, the third screw rod and the fourth screw rod are synchronously rotatably connected, the third screw rod and the fourth screw rod of one of the second driving components are respectively threadedly connected to the transmission blocks of the two middle clamping jaw assemblies, and the third screw rod and the fourth screw rod of the other second driving component are respectively threadedly connected to the transmission blocks of the two end clamping jaw assemblies.

[0017] As a preferred solution of the sand core clamping mechanism, the clamp includes a clamp body slidably arranged on the movable part and a supporting part arranged on the clamp body, the two clamp bodies of the clamp assembly are used to clamp the sand core along a first direction, and the supporting part is used to support the bottom wall of the sand core.

[0018] As a preferred solution of the sand core clamping mechanism, the mounting seat is provided with a first slide rail extending along a first direction, the movable part is slidably matched with the first slide rail, the first slide rail has a first groove, and the side wall of the first groove supports the movable part in the vertical direction; and / or, the movable part is provided with a second slide rail extending along a second direction, the clamping jaw is slidably matched with the second slide rail, the second slide rail has a second groove, and the side wall of the second groove supports the clamping jaw in the vertical direction.

[0019] According to another aspect of the utility model, a sand box assembly system is provided, comprising a sand core conveying device for conveying sand cores and a sand box conveying device for conveying a sand box, wherein the sand box has a mold cavity;

[0020] The sand box assembly system also includes a core setting robot and the above-mentioned sand core clamping mechanism, the sand core clamping mechanism is installed on the core setting robot, the core setting robot is used to drive the sand core clamping mechanism to rise and fall in the vertical direction or move in the horizontal direction, the sand core clamping mechanism is used to clamp the sand core and place the clamped sand core in the mold cavity.

[0021] As a preferred solution of the sand core clamping mechanism, the core setting robot and the sand core clamping mechanism are both provided in plurality, and the plurality of core setting robots are connected to the plurality of sand core clamping mechanisms in a one-to-one correspondence.

[0022] The beneficial effects of the utility model are:

[0023] The utility model provides a sand core clamping mechanism, which is used for clamping sand cores and comprises a mounting seat, a movable assembly, a clamping jaw assembly, a first driving member and a second driving member, wherein the movable assembly comprises two movable members, and the two movable members are both slidably arranged on the mounting seat along a first direction; the clamping jaw assembly comprises two clamping jaws, wherein one clamping jaw is slidably arranged on one of the movable members along a second direction, and the other clamping jaw is slidably arranged on the other movable member along the second direction, and the first direction, the second direction and the vertical direction are perpendicular to each other; the first driving member is used for driving the two movable members to approach or move away from each other along the first direction, and when the two movable members approach each other, the two clamping jaws of the clamping jaw assembly can clamp the sand core along the first direction, thereby realizing automatic clamping and placement of the sand core; the second driving member is used for simultaneously driving the two clamping jaws of the clamping jaw assembly to slide along the second direction. The sand core clamping mechanism can drive two movable parts to approach each other along a first direction through a first driving member, so that the clamping jaws can clamp the sand core along the first direction. In addition, before clamping the sand core, the two clamping jaw assemblies can be driven to slide along a second direction through a second driving member, thereby changing the clamping position of the clamping jaws on the sand core, and can adapt to changes in the placement position of the sand core on the roller.

[0024] The utility model also provides a sand box assembly system, including a sand core conveying device for conveying sand cores and a sand box conveying device for conveying sand boxes, the sand box having a mold cavity, the sand box assembly system also includes a core setting robot and the above-mentioned sand core clamping mechanism, the sand core clamping mechanism is installed on the core setting robot, the core setting robot is used to drive the sand core clamping mechanism to rise and fall in the vertical direction or move in the horizontal direction, the sand core clamping mechanism is used to clamp the sand core and place the clamped sand core in the mold cavity, so that the sand core can be conveyed by the sand core conveying roller, the sand box can be conveyed by the sand box conveying roller, and the sand core clamping mechanism is driven by the core setting robot to rise and fall in the vertical direction or move in the horizontal direction to complete the clamping, transportation and lowering of the sand core, so that the sand core is placed in the mold cavity. In addition, the sand core clamping mechanism can drive the two movable parts to approach each other in a first direction through a first driving member so that the clamping jaws clamp the sand core along the first direction. In addition, before clamping the sand core, the two clamping jaw assemblies can be driven to slide in a second direction through a second driving member, thereby changing the clamping position of the clamping jaws on the sand core, which can adapt to changes in the placement position of the sand core on the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The structure diagram of the sand core clamping mechanism in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0026] Figure 2 The structure diagram of the sand core clamping mechanism in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0027] Figure 3 It is a structural schematic diagram of the sand core in the embodiment of the utility model;

[0028] Figure 4 It is a structural schematic diagram of a sand box assembly system in an embodiment of the utility model.

[0029] In the figure:

[0030] 100, sand core; 101, clamping groove; 110, sand box;

[0031] 200. Core loading robot;

[0032] 300, sand core conveying roller;

[0033] 400, sand box conveyor roller;

[0034] 1. Mounting seat; 11. First slide rail;

[0035] 2. movable assembly; 21. movable part; 211. second slide rail;

[0036] 3. Clamping jaw assembly; 31. Clamping jaw; 311. Clamping jaw body; 312. Supporting portion; 32. Guide rod; 33. Transmission block;

[0037] 4. First driving member; 41. First motor; 42. First screw rod; 43. First coupling; 44. Second screw rod;

[0038] 5. Second driving member; 51. Second motor; 52. Third screw rod; 53. Second coupling; 54. Fourth screw rod. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] During the assembly process of the sand box, the sand core needs to be placed in the mold cavity of the sand box. In this regard, the prior art provides an automatic core setting robot, which is provided with two left clamping claws and a right clamping claw. The two left clamping claws can move in the front-to-back direction to clamp the front and rear sides of the sand core, and the right clamping claw can move in the left-to-right direction to clamp the right side of the sand core, thereby completing the clamping of the sand core. However, the left clamping claw cannot move in the left-to-right direction, and the right clamping claw cannot move in the front-to-back direction, that is, the clamping positions of the two left clamping claws and the right clamping claw for the sand core are fixed, and neither of them can adjust the clamping position of the sand core, and it is difficult to adapt to the changes in the placement position of the sand core on the roller.

[0044] In view of the above problems, this embodiment provides a sand core clamping mechanism to solve the problem that the prior art cannot adjust the clamping position of the sand core and is difficult to adapt to changes in the placement position of the sand core on the roller table. It can be used in the field of sand box assembly technology.

[0045] Reference Figure 1-Figure 2The sand core clamping mechanism is used to clamp the sand core 100, and includes a mounting seat 1, a movable assembly 2, a clamping jaw assembly 3, a first driving member 4 and a second driving member 5. The movable assembly 2 includes two movable members 21, and the two movable members 21 are both slidably arranged on the mounting seat 1 along the first direction; the clamping jaw assembly 3 includes two clamping jaws 31, one of which is slidably arranged on one of the movable members 21 along the second direction, and the other clamping jaw 31 is slidably arranged on the other movable member 21 along the second direction, and the first direction, the second direction and the vertical direction are perpendicular to each other; the first driving member 4 is used to drive the two movable members 21 to approach or move away from each other along the first direction. When the two movable members 21 approach each other, the two clamping jaws 31 of the clamping jaw assembly 3 can clamp the sand core 100 along the first direction, thereby realizing the automatic clamping and placement of the sand core 100. The second driving member 5 is used to simultaneously drive the two clamping jaws 31 of the clamping jaw assembly 3 to slide along the second direction. The sand core clamping mechanism can drive the two movable parts 21 to approach each other along the first direction through the first driving part 4, so that the clamping jaws 31 clamp the sand core 100 along the first direction. In addition, before clamping the sand core 100, the two clamping jaw assemblies 3 can be driven to slide along the second direction through the second driving part 5, thereby changing the clamping position of the clamping jaws 31 on the sand core 100, which can adapt to the changes in the placement position of the sand core 100 on the roller.

[0046] Continue to refer to Figure 1-Figure 2 The first driving member 4 includes a first motor 41, a first screw rod 42 and a second screw rod 44. The output end of the first motor 41 is connected to the first screw rod 42. The first screw rod 42 and the second screw rod 44 are both rotatably arranged on the mounting seat 1, and the thread rotation directions are opposite. The first screw rod 42 and the second screw rod 44 are synchronously rotatably connected. The first screw rod 42 is threadedly connected to one of the movable members 21, and the second screw rod 44 is threadedly connected to the other movable member 21. With such a configuration, the first motor 41 can simultaneously drive the first screw rod 42 and the second screw rod 44 to rotate, and because the first screw rod 42 and the second screw rod 44 rotate synchronously, and the two screw threads rotate in opposite directions, the first screw rod 42 is threadedly connected to one of the movable parts 21, and the second screw rod 44 is threadedly connected to the other movable part 21. When the first motor 41 drives the first screw rod 42 and the second screw rod 44 to rotate synchronously, the two movable parts 21 can be driven to move in the first direction at the same time, and the two move closer to or away from each other, so that the clamping jaw 31 can clamp the sand core 100 or release the sand core 100 in the first direction. In this embodiment, the first screw rod 42 and the second screw rod 44 are connected to rotate synchronously through the first coupling 43. In other embodiments, the two can also be directly connected.

[0047] Continue to refer to Figure 1-Figure 2, multiple movable components 2 and first driving members 4 are provided, multiple movable components 2 are connected to two first driving members 4 one by one, multiple movable components 2 are provided with clamping jaw components 3, and two groups of movable components 2 are provided, so that the sand core clamping mechanism can grasp two sand cores 100 at the same time, or grasp a larger sand core 100 through two groups of clamping jaw components 3. Any two adjacent movable components 2 are spaced apart along the second direction, so that the movable members 21 of the multiple movable components 2 do not interfere with each other when moving along the first direction.

[0048] Continue to refer to Figure 1-Figure 2 The clamping jaw assembly 3 further includes a guide rod 32 and a transmission block 33. The guide rod 32 is slidably disposed in the two clamping jaws 31 along the first direction. The guide rod 32 is fixedly connected to the transmission block 33. The second driving member 5 is used to drive the transmission block 33 to move along the second direction, so as to simultaneously drive the two clamping jaws 31 to move. The transmission block 33 can play a role in driving the clamping jaws 31 to move, and the guide rod 32 can play a role in guiding and positioning.

[0049] Continue to refer to Figure 1-Figure 2 , multiple movable components 2 are connected to multiple jaw assemblies 3, and the multiple jaw assemblies 3 located in the same movable component 2 are arranged in sequence along the second direction at intervals, so that one movable component 2 can simultaneously drive the jaws 31 of multiple jaw assemblies 3 to approach each other to complete the clamping of the sand core 100, and the clamping is relatively stable.

[0050] Continue to refer to Figure 1-Figure 2, the movable assembly 2 and the second driving member 5 are both provided with two, and the two movable assemblies 2 are both connected with two clamping jaw assemblies 3. Among the four clamping jaw assemblies 3, along the second direction, the two clamping jaw assemblies 3 located in the middle are middle clamping jaw assemblies, and the two clamping jaw assemblies 3 located at both ends are end clamping jaw assemblies; the second driving member 5 includes a second motor 51, a third screw rod 52 and a fourth screw rod 54. The output end of the second motor 51 is connected to the third screw rod 52. The third screw rod 52 and the fourth screw rod 54 are both rotatably arranged on the mounting seat 1, and the thread rotation direction is opposite. The third screw rod 52 and the fourth screw rod 54 are synchronously rotated and connected. Specifically, the third screw rod 52 and the fourth screw rod 54 can be connected through a second coupling 53 to achieve synchronous rotation connection, or they can be directly connected. The third screw rod 52 and the fourth screw rod 54 of one of the second driving members 5 are respectively threadedly connected to the transmission blocks 33 of the two middle clamping jaw assemblies, and the third screw rod 52 and the fourth screw rod 54 of the other second driving member 5 are respectively threadedly connected to the transmission blocks 33 of the two end clamping jaw assemblies. Among them, one sand core 100 can be grasped by two clamping jaw assemblies 3 arranged on one of the movable assemblies 2, and another sand core 100 can be grasped by two clamping jaw assemblies 3 arranged on the other movable assemblies 2, and the grasping is stable, which can prevent the sand core 100 from falling off. In addition, the sand core 100 can also be grasped by a clamping jaw assembly 3 arranged on one of the movable assemblies 2 and a clamping jaw assembly 3 arranged on the other movable assemblies 2. For example, the sand core 100 can be grasped by two middle clamping jaw assemblies, or by two end clamping jaw assemblies. However, it should be noted that the two middle clamping jaw assemblies may interfere with the sand core 100. At this time, the two middle clamping jaw assemblies can be removed, and only the two end clamping jaw assemblies are retained.

[0051] Continue to refer to Figure 1-Figure 2 The clamping jaw 31 includes a clamping jaw body 311 slidably disposed on the movable part 21 and a supporting portion 312 disposed on the clamping jaw body 311. The two clamping jaw bodies 311 of the clamping jaw assembly 3 are used to clamp the sand core 100 along a first direction, and the supporting portion 312 is used to support the bottom wall of the sand core 100. Therefore, while the clamping jaw body 311 clamps the sand core 100, it is supported on the bottom wall of the sand core 100 by the supporting portion 312, which can further prevent the sand core 100 from falling and improve the stability of clamping. In this embodiment, the clamping of the sand core 100 can be completed by two clamping jaw assemblies 3, that is, four clamping jaws 31. Optionally, the sand core 100 can be provided with a plurality of clamping grooves 101 for the clamping jaws 31 to extend into, such as Figure 3 As shown, the four vertices of the sand core 100 are all provided with clamping grooves 101, and the supporting portion 312 of the clamping jaw 31 can extend into the clamping groove 101 and abut against the bottom wall of the clamping groove 101, thereby supporting the sand core 100 and completing the clamping.

[0052] Continue to refer to Figure 1-Figure 2, the mounting seat 1 is provided with a first slide rail 11 extending along a first direction, the movable member 21 is slidably matched with the first slide rail 11, the first slide rail 11 has a first groove, and the side wall of the first groove supports the movable member 21 in the vertical direction, thereby preventing the movable member 21 from falling out of the first groove. And / or, the movable member 21 is provided with a second slide rail 211 extending along a second direction, the clamping jaw 31 is slidably matched with the second slide rail 211, the second slide rail 211 has a second groove, and the side wall of the second groove supports the clamping jaw 31 in the vertical direction, thereby preventing the clamping jaw 31 from falling out of the second groove. This embodiment exemplarily provides a solution of simultaneously providing the first slide rail 11 and the second slide rail 211.

[0053] The present embodiment also provides a sand box assembly system, including a sand core conveying device 300 for conveying sand cores 100 and a sand box conveying device 400 for conveying sand boxes 110, wherein the sand box 110 has a mold cavity, and the sand box assembly system also includes a core setting robot 200 and the above-mentioned sand core clamping mechanism, wherein the sand core clamping mechanism is installed on the core setting robot 200, wherein the sand core clamping mechanism can be detachably connected to the core setting robot 200 via a quick-change disk, and the quick-change disk is a relatively common structure in the art, and its specific structure and disassembly and assembly principle will not be repeated here. The core setting robot 200 is used to drive the sand core clamping mechanism to rise and fall in the vertical direction or move in the horizontal direction. The sand core clamping mechanism is used to clamp the sand core 100 and place the clamped sand core 100 in the mold cavity, so that the sand core 100 can be transported through the sand core conveying roller 300, and the sand box 110 can be transported through the sand box conveying roller 400. The core setting robot 200 drives the sand core clamping mechanism to rise and fall in the vertical direction or move in the horizontal direction to complete the clamping, transportation and lowering of the sand core 100, so that the sand core 100 is placed in the mold cavity. In addition, the sand core clamping mechanism can drive the two movable members 21 to approach each other in the first direction through the first driving member 4, so that the clamping jaws 31 clamp the sand core 100 in the first direction. In addition, before clamping the sand core 100, the two clamping jaw assemblies 3 can also be driven to slide in the second direction through the second driving member 5, so as to change the clamping position of the clamping jaws 31 on the sand core 100, and can adapt to the change of the placement position of the sand core 100 on the roller.

[0054] Reference Figure 4 There are multiple core setting robots 200 and sand core clamping mechanisms, and the multiple core setting robots 200 are connected to the multiple sand core clamping mechanisms in a one-to-one correspondence, so that the multiple sand core clamping mechanisms are respectively driven to rise and fall in the vertical direction or move in the horizontal direction by the multiple core setting robots 200. For the assembly of the same group of sand cores 100 and sand boxes 110, the multiple sand core clamping mechanisms can be controlled to work simultaneously or alternately to improve work efficiency.

[0055] In this embodiment, the values ​​of m and n are both 2, that is, the number of the third screw rods 52 of the movable component 2 and the second driving member 5 is two, and the two movable components 2 are connected to two clamping jaw components 3, the second driving member 5 is provided with two, and the two third screw rods 52 of the two second driving members 5 are connected to different clamping jaw components 3. In addition, the core setting robot 200 and the sand core clamping mechanism are provided with two, and multiple sand cores 100 need to be placed in the same cavity. Figure 1-Figure 4 The process of assembling the sand box in this embodiment is introduced as follows:

[0056] First, the sand core 100 is transported to the first preset position by the sand core conveying roller 300. At this time, the photoelectric sensing position system located on the sand core conveying roller 300 sends a position signal to confirm that the sand core 100 is in place. The sand box 110 is transported to the second preset position by the sand box conveying roller 400, and then both stop moving to wait for the sand core 100 to be grabbed and placed. At the same time, the position of the sand box 110 can be locked by a locking mechanism, for example, positioning pins can be set around the sand box 110, and the positioning pins are driven by a hydraulic system.

[0057] Subsequently, one of the core setting robots 200 drives the sand core clamping mechanism to move above the first preset position. Specifically, the position of the sand core 100 can be identified by the visual system, and the core setting robot 200 can be controlled to drive the sand core clamping mechanism to move according to the identified visual signal. The second driving member 5 drives the clamping jaw assembly 3 to move in the second direction to change the clamping position of the clamping jaw assembly 3 in the second direction, and then the core setting robot 200 drives the sand core clamping mechanism to move downward, and the first driving member 4 drives the two movable members 21 to approach each other in the first direction, so as to drive the two clamping jaws 31 of the same clamping jaw assembly 3 to approach each other to clamp the sand core 100. At this time, one sand core 100 can be grasped by two clamping jaw assemblies 3 arranged on one of the movable components 2, and another sand core 100 can be grasped by two clamping jaw assemblies 3 arranged on the other movable component 2. The sand core 100 can also be grasped by a clamping jaw assembly 3 arranged on one of the movable components 2 cooperating with a clamping jaw assembly 3 arranged on the other movable component 2. For example, the sand core 100 can be grasped by two middle clamping jaw assemblies, or by two end clamping jaw assemblies.

[0058] After the sand core 100 is captured, the core lowering robot 20 is controlled to drive the sand core clamping mechanism to rise in the vertical direction, from above the first preset position to above the second preset position. Specifically, the position of the sand box 110 can be identified by the visual system, and the core lowering robot 200 can be controlled to drive the sand core clamping mechanism to move according to the identified visual signal, or the position of the positioning pins set on the sand box 110 can be identified to complete the positioning of the sand box 110. Then the core lowering robot 20 is controlled to drive the sand core clamping mechanism to descend in the vertical direction. After descending to a suitable position, the first driving member 4 drives the two movable members 21 to move away from each other in the first direction to release the clamping of the sand core 100 and place the sand core 100 in the mold cavity. Then repeat the above operation to complete the capture and placement of other sand cores 100.

[0059] In addition, when one group of core setting robots 200 and sand core clamping mechanisms are located above the second preset position and are performing the placement operation of the sand core 100, another group of core setting robots 200 and sand core clamping mechanisms can be simultaneously controlled to move to above the first preset position and grab other sand cores 100, so that the two groups of core setting robots 200 and sand core clamping mechanisms can work simultaneously, thereby improving work efficiency.

[0060] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A sand core clamping mechanism, used for clamping a sand core (100); characterized in that: include: Mounting seat (1); A movable assembly (2) comprising two movable parts (21), wherein the two movable parts (21) are both slidably disposed on the mounting seat (1) along a first direction; The clamping jaw assembly (3) comprises two clamping jaws (31), wherein one of the clamping jaws (31) is slidably disposed on one of the movable members (21) along the second direction, and the other clamping jaw (31) is slidably disposed on the other movable member (21) along the second direction, and the first direction, the second direction and the vertical direction are perpendicular to each other; A first driving member (4) is used to drive the two movable members (21) to move closer to each other or farther away from each other along a first direction, and when the two movable members (21) move closer to each other, the two clamping jaws (31) of the clamping jaw assembly (3) can clamp the sand core (100) along the first direction; The second driving member (5) is used for simultaneously driving the two clamping jaws (31) of the clamping jaw assembly (3) to slide along a second direction.

2. The sand core clamping mechanism according to claim 1, characterized in that: The first driving member (4) comprises a first motor (41), a first screw rod (42) and a second screw rod (44); the output end of the first motor (41) is connected to the first screw rod (42); the first screw rod (42) and the second screw rod (44) are both rotatably arranged on the mounting seat (1) and have opposite thread rotation directions; the first screw rod (42) and the second screw rod (44) are synchronously rotatably connected; the first screw rod (42) is threadedly connected to one of the movable members (21) and the second screw rod (44) is threadedly connected to the other movable member (21).

3. The sand core clamping mechanism according to claim 1, characterized in that: The movable components (2) and the first driving members (4) are provided in plurality, the plurality of movable components (2) are connected to the plurality of first driving members (4) in a one-to-one correspondence, any two adjacent movable components (2) are spaced apart along the second direction, and the plurality of movable components (2) are provided with the clamping jaw components (3).

4. The sand core clamping mechanism according to claim 3, characterized in that: The clamping jaw assembly (3) further comprises a guide rod (32) and a transmission block (33); the guide rod (32) is slidably arranged in a first direction and penetrates through the two clamping jaws (31); the guide rod (32) is fixedly connected to the transmission block (33); and the second driving member (5) is used to drive the transmission block (33) to move in a second direction so as to simultaneously drive the two clamping jaws (31) to move.

5. The sand core clamping mechanism according to claim 4, characterized in that: The plurality of movable components (2) are all connected to the plurality of clamping jaw components (3), and the plurality of clamping jaw components (3) located on the same movable component (2) are sequentially spaced apart along the second direction.

6. The sand core clamping mechanism according to claim 5, characterized in that: The movable components (2) and the second driving member (5) are both provided with two, and the two movable components (2) are both connected to the two clamping jaw components (3). Among the four clamping jaw components (3), along the second direction, the two clamping jaw components (3) located in the middle are middle clamping jaw components, and the two clamping jaw components (3) located at the two ends are end clamping jaw components; the second driving member (5) comprises a second motor (51), a third screw rod (52) and a fourth screw rod (54), the output end of the second motor (51) is connected to the third screw rod (52), and the third screw rod (54) is connected to the output end of the second motor (51). The third screw rod (52) and the fourth screw rod (54) are both rotatably arranged on the mounting seat (1), and the thread rotation directions are opposite, the third screw rod (52) and the fourth screw rod (54) are synchronously rotatably connected, the third screw rod (52) and the fourth screw rod (54) of one of the second driving members (5) are respectively threadedly connected to the transmission blocks (33) of the two middle clamping jaw assemblies, and the third screw rod (52) and the fourth screw rod (54) of the other second driving member (5) are respectively threadedly connected to the transmission blocks (33) of the two end clamping jaw assemblies.

7. The sand core clamping mechanism according to any one of claims 1 to 6, characterized in that: The clamping jaw (31) comprises a clamping jaw body (311) slidably arranged on the movable part (21) and a supporting portion (312) arranged on the clamping jaw body (311); the two clamping jaw bodies (311) of the clamping jaw assembly (3) are used to clamp the sand core (100) along a first direction, and the supporting portion (312) is used to support the bottom wall of the sand core (100).

8. The sand core clamping mechanism according to any one of claims 1 to 6, characterized in that: The mounting seat (1) is provided with a first slide rail (11) extending along a first direction, the movable member (21) is slidably matched with the first slide rail (11), the first slide rail (11) has a first groove, and the side wall of the first groove supports the movable member (21) along the vertical direction; and / or the movable member (21) is provided with a second slide rail (211) extending along a second direction, the clamping jaw (31) is slidably matched with the second slide rail (211), the second slide rail (211) has a second groove, and the side wall of the second groove supports the clamping jaw (31) along the vertical direction.

9. A sand box assembly system, comprising a sand core conveying device (300) for conveying a sand core (100) and a sand box conveying device (400) for conveying a sand box (110), wherein the sand box (110) has a mold cavity; It is characterized in that The sand box assembly system also includes a core setting robot (200) and a sand core clamping mechanism as described in any one of claims 1 to 8, wherein the sand core clamping mechanism is installed on the core setting robot (200), and the core setting robot (200) is used to drive the sand core clamping mechanism to rise and fall in a vertical direction or move in a horizontal direction, and the sand core clamping mechanism is used to clamp the sand core (100) and place the clamped sand core (100) in the mold cavity.

10. The flask assembly system according to claim 9, characterized in that: The core setting robot (200) and the sand core clamping mechanism are both provided in plurality, and the plurality of core setting robots (200) are connected to the plurality of sand core clamping mechanisms in a one-to-one correspondence.

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