Multipurpose sand core box assembling clamp

Abstract

The invention relates to a multipurpose sand core box assembling clamp. The multipurpose sand core box assembling clamp comprises a support, a movable supporting arm and a fixed supporting arm. The support is provided with a movable supporting arm and a fixed supporting arm, the movable supporting arm and the fixed supporting arm are each provided with a clamping mechanism used for clamping a sand core, and the movable supporting arm is used for moving towards the fixed supporting arm so that the clamping mechanisms can clamp the sand core. Swing carrying mechanisms are arranged at the ends, away from the support, of the movable supporting arm and the fixed supporting arm correspondingly and comprise carrying hooks rotationally arranged, and the carrying hooks are used for rotating to be parallel to the side wall of the sand core after box closing so that the carrying hooks can stretch into grooves in the side wall of the sand core. When the sand cores after box closing are carried, the carrying hooks are used for bearing the weight of the bottom plate core and the cover plate core, the stability is improved, and the sand cores with different lengths and sizes can be carried as long as it is guaranteed that the carrying hooks stretch into the grooves formed in the surfaces of the bottom plate core and the cover plate core at the same time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foundry, tooling fixture, in particular to a multipurpose sand core clamping fixture. BACKGROUND

[0002] In the process of casting forming, the sand core is divided into bottom plate core and cover plate core, and the sand core clamping refers to the bottom plate core and the cover plate core being buckled together, the fixture needs to clamp the bottom plate core and the cover plate core respectively to clamp together, and the clamped sand core needs to be transported to the conveying roller, the existing fixture usually adopts a clamping mechanism to clamp the two sides of the sand core to complete the above operation, but when the clamped sand core is transported, the types of sand core are various, the weight of the buckled sand core is heavy, generally more than 100 kg, and the clamping operation of the sand core with large shape and size is not convenient, which causes production safety hazard and low clamping efficiency. SUMMARY

[0003] (I) Technical problem to be solved The present application provides a multipurpose sand core clamping fixture, which aims to solve the problem of low clamping efficiency of the existing fixture when clamping and transporting the sand core of different lengths and sizes after clamping.

[0004] (II) Technical scheme In order to solve the above problems, the present application provides a multipurpose sand core clamping fixture, which comprises a support, a movable support arm and a fixed support arm. The movable support arm and the fixed support arm are provided on the support, and the movable support arm and the fixed support arm are provided with clamping mechanisms for clamping the sand core, the movable support arm is used to move towards the fixed support arm, so that the clamping mechanism clamps the sand core. The movable support arm and the fixed support arm are provided with a swing transporting mechanism at one end away from the support, the swing transporting mechanism comprises a transporting hook rotatably provided, the transporting hook is used to rotate to be parallel to the side wall of the clamped sand core, so that the transporting hook extends into the groove on the side wall of the sand core.

[0005] Preferably, the swing transporting mechanism further comprises a flange seat, a swing shaft and a fixed seat. The second end of the movable support arm and the fixed support arm is fixedly provided with the flange seat, the swing shaft is rotatably provided on the flange seat, the fixed seat is connected with the first end of the swing shaft, and the transporting hook is fixedly provided on the fixed seat.

[0006] Preferably, the swing transporting mechanism further comprises a swing cylinder; the swing cylinder is fixedly installed on the flange seat, and the output shaft of the swing cylinder is fixedly connected with the second end of the swing shaft.

[0007] Preferably, the swing cylinder's output shaft's rotation range is 0°-90°.

[0008] Preferably, the clamping mechanism comprises a fixed clamping plate, a moving clamping plate, a guide shaft and a driving device. The moving support arm and the fixed support arm are both provided with the guide shaft, the fixed clamping plate and the driving device, the moving clamping plate is slidingly arranged on the guide shaft, and the fixed clamping plate and the moving clamping plate are arranged in pairs. The driving device is used to drive the moving clamping plate to move along the guide shaft, so that the fixed clamping plate and the moving clamping plate clamp one side of the sand core.

[0009] Preferably, the fixed clamping plate and the moving clamping plate are both provided with a buffer pad for abutting against the sand core.

[0010] Preferably, the fixed clamping plate and the moving clamping plate are both provided with a floating assembly, the floating assembly comprising a limiting plate, a floating plate and a floating rotating shaft. The fixed clamping plate and the moving clamping plate are both provided with the limiting plate, the floating clamping plate is rotationally connected with the limiting plate through the floating rotating shaft, the limiting plate is used to limit the rotation angle of the floating plate, and the buffer pad is installed on the floating plate.

[0011] Preferably, the bracket is provided with a linear guide rail, and the moving support arm is provided with a sliding groove matched with the linear guide rail.

[0012] (Three) beneficial effects The sand core before the box closing and the sand core after the box closing are clamped and carried by the clamping mechanism and the carrying hook respectively, the carrying hook is rotated to avoid interference, the weight of the bottom plate core and the cover plate core is borne by the carrying hook, the stability is improved, and the carrying efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic view of the overall structure of the multipurpose box closing clamp of the application. Figure 2 It is a schematic view of the overall structure of the multipurpose box closing clamp of the application. Figure 1 It is an enlarged view at A. Figure 3 It is an enlarged view at A. Figure 1 It is an enlarged view at B. Figure 4 It is a sectional view of the swing carrying mechanism in the application. Figure 5 It is a schematic view of the structure of the floating assembly in the application. Figure 6 It is a schematic view of the structure of the multipurpose box closing clamp of the application when carrying the sand core after the box closing. Figure 7 For Figure 6 Enlarged view at C.

[0014]

BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to better explain the present application, so as to be understood, the following specific embodiments are described in detail in combination with the drawings.

[0016] It should be noted that all directional directions (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional directions also change accordingly.

[0017] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0018] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood broadly, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium; can be internal communication of two elements or interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0019] As Figures 1 to 7As shown, this invention provides a multi-purpose sand core assembly clamp, comprising: a bracket 1, a movable support arm 2, and a fixed support arm 3. The bracket 1 is provided with the movable support arm 2 and the fixed support arm 3. Both the movable support arm 2 and the fixed support arm 3 are provided with clamping mechanisms 4 for clamping sand cores 6. The movable support arm 2 moves toward the fixed support arm 3 so that the clamping mechanisms 4 clamp the side wall of the sand core 6 (the sand core before assembly). Both the movable support arm 2 and the fixed support arm 3 have a swing conveying mechanism 5 at the end away from the bracket 1. The swing conveying mechanism 5 is rotatably equipped with a conveying hook 51, which is used to rotate until it is parallel to the side wall of the sand core 6 after assembly, so that the conveying hook 51 extends into a groove 61 on the side wall of the sand core 6.

[0020] In the technical solution of this invention, during the box closing process, the transport hook 51 rotates to the avoidance position, such as... Figure 1 As shown, at this time, the transport hook 51 on the movable support arm 2 and the transport hook 51 on the fixed support arm 3 are on the same straight line to prevent the transport hook 51 from interfering with the clamping mechanism 4 (because the bracket 1 is connected to the robot, the robot needs to drive the bracket from...). Figure 1 The vertical arm swings to a horizontal position to clamp the bottom plate core or cover plate core on the feeding line. (At this time, the handling hook 51 will not interfere with the workstation on the feeding line). The bracket 1 is connected to the end of the robot arm. After the clamping mechanism 4 on the movable support arm 2 and fixed support arm 3 on the bracket 1 clamps the bottom plate core, the robot arm drives the bracket 1 to flip and fasten the bottom plate core onto the cover plate core, completing the box assembly. After the sand core 6 is assembled, the screw is inserted. After the screw is inserted, the assembled sand core 6 is transported. Figure 6 As shown, Figure 6 The sand core in the middle is the sand core after it has been assembled. When handling the assembled sand core 6, the handling hook 51 rotates to the handling position, as shown... Figure 6 As shown, at this time, the length directions of the transport hooks 51 on the movable support arm 2 and the fixed support arm 3 are both perpendicular to the vertical plane. The transport hooks 51 on the movable support arm 2 and the fixed support arm 3 are parallel to each other. At this time, the transport hooks 51 are also parallel to the bottom surface of the groove 61 on the side wall of the sand core 6 after the box is closed. The transport hooks 51 are extended into the groove 61 on the side wall of the sand core 6 after the box is closed under the drive of the robot (corresponding grooves 61 are provided on the bottom plate core and the cover plate core. After the box is closed, the corresponding grooves 61 on the bottom plate core and the cover plate core will be connected), thereby completing the transport of the sand core 6 after the box is closed.

[0021] In the above scheme, before the sand core is closed, the clamping mechanism 4 on the movable support arm 2 and the fixed support arm 3 is used to clamp the sand core for closure. At this time, the transport hook 51 can avoid the clamping mechanism 4. After the sand core is closed, when transporting the closed sand core 6, the transport hook 51 simultaneously extends into the groove 61 provided on the side wall of the bottom plate core and the cover plate core to realize the transport of the closed sand core 6. This application uses the clamping mechanism and the transport hook to clamp and transport the sand core before and after closure, respectively. Rotating the transport hook avoids interference, and the transport hook 51 supports the weight of the bottom plate core and the cover plate core, which improves stability and transport efficiency. As long as the transport hook 51 is simultaneously extended into the groove 61 provided on the side wall of the bottom plate core and the cover plate core, sand cores 6 of different lengths and sizes can be transported. In addition, since the transport hook 51 does not need to clamp the sand core 6, but only needs to extend into the groove 61 on the side wall of the sand core 6, this application can also adapt to sand cores 6 of different shapes.

[0022] Furthermore, the swing conveying mechanism 5 also includes: a flange seat 52, a swing shaft 53, and a fixed seat 54. The second ends of both the movable support arm 2 and the fixed support arm 3 are fixedly provided with flange seats 52. The swing shaft 53 is rotatably mounted on the flange seat 52. The fixed seat 54 is connected to the first end of the swing shaft 53, and the conveying hook 51 is fixedly mounted on the fixed seat 54. In this design, both the movable support arm 2 and the fixed support arm 3 are fixedly connected to the flange seat 52 by bolts, making the connection method simple and reliable.

[0023] In a preferred embodiment, the swing conveying mechanism 5 further includes a swing cylinder 55; the swing cylinder 55 is fixedly mounted on the flange seat 52, and the output shaft of the swing cylinder 55 is fixedly connected to the second end of the swing shaft 53. The rotation range of the output shaft of the swing cylinder 55 is 0° to 90°. That is, when the swing cylinder 55 is not rotating, the conveying hook 51 corresponds to the avoidance station or the conveying station; when the swing cylinder 55 rotates 90°, the conveying hook 51 corresponds to the conveying station or the avoidance station.

[0024] Furthermore, the clamping mechanism 4 includes: a fixed clamping plate 41, a movable clamping plate 42, a guide shaft 43, and a driving device; both the movable support arm 2 and the fixed support arm 3 are equipped with a guide shaft 43, a fixed clamping plate 41, and a driving device. The movable clamping plate 42 is slidably mounted on the guide shaft 43, and the fixed clamping plate 41 and the movable clamping plate 42 are arranged in pairs. The driving device is used to drive the movable clamping plate 42 to move along the guide shaft 43, so that the fixed clamping plate 41 and the movable clamping plate 42 clamp one side of the sand core 6. The movement of the movable clamping plate 42 can be driven by a hydraulic cylinder, a pneumatic cylinder, or a servo motor as a power source.

[0025] In the present application, the clamping mechanisms 4 are arranged on the movable supporting arm 2 and the fixed supporting wall, the clamping mechanisms 4 on the movable supporting arm 2 are used to clamp one side of the sand core 6, and the clamping mechanisms 4 on the fixed supporting arm 3 are used to clamp the other side of the sand core 6, since the movable supporting arm 2 can move on the support 1, the multipurpose sand core 6 closing clamp of the present application can clamp sand cores 6 of different lengths. For the convenience of description, the clamping mechanisms 4 on the fixed supporting arm 3 are taken as an example for description (the clamping mechanisms 4 on the movable supporting arm 2 are the same), in order to tightly clamp, the guide shaft 43 is provided with two movable clamping plates 42 and one corresponding fixed clamping plate 41, the movable clamping plate 42 approaches the fixed clamping plate 41 to realize clamping of the sand core 6.

[0026] In the preferred embodiment, the fixed clamping plate 41 and the movable clamping plate 42 are both provided with a buffer pad 44 for abutting against the sand core 6. The arrangement of the buffer pad 44 makes the fixed clamping plate 41 and the movable clamping plate 42 contact the sand core 6 in a soft manner, solving the problem of clamping damage to the sand core 6 caused by the large force of the fixed clamping plate 41 and the movable clamping plate 42.

[0027] In addition, the fixed clamping plate 41 and the movable clamping plate 42 are both provided with a floating assembly, which comprises a limiting plate 45, a floating plate 46 and a floating rotating shaft 47; the fixed clamping plate 41 and the movable clamping plate 42 are both provided with the limiting plate 45, the floating clamping plate is rotationally connected with the limiting plate 45 through the floating rotating shaft 47, the limiting plate 45 is used to limit the rotation angle of the floating plate 46, that is, the floating plate 46 will contact the limiting plate 45 after rotating a certain angle, thereby realizing the function of limiting the rotation of the floating plate 46 by the limiting plate 45, and the buffer pad 44 is installed on the floating plate 46. When the fixed clamping plate 41 and the movable clamping plate 42 clamp the sand core 6, since the shape of the sand core 6 is irregular, after the buffer pad 44 contacts the surface of the sand core 6, the buffer pad 44 will rotate according to the shape of the sand core 6 to realize the fitting of the shape of the sand core 6, changing the traditional point contact into surface contact, reducing the generation of gap, clamping more firmly, so that the present application can clamp the sand core without using a large force. Avoiding the existence of a certain tolerance gap between the clamp and the clamped object in the prior art, so the clamp is often not clamped tightly when clamping force is applied on the two-box molding sand box, and the clamp is not clamped tightly, and a larger force has to be applied during the clamping process, which seriously reduces the production efficiency, and the excessive force often causes damage to the clamp and damage to the sand core.

[0028] Finally, the support 1 is provided with a linear guide rail 11, and the movable supporting arm 2 is provided with a sliding groove matched with the linear guide rail 11. The movable supporting arm 2 is driven by the mutual cooperation of the servo motor, the screw rod and the nut when moving, and the servo motor is used as a power source to drive the movable supporting arm 2 on one side to move towards the fixed supporting arm 3 on the other side, thereby realizing the clamping and transfer of sand cores 6 of different lengths.

[0029] It is to be understood that the above description is only a description of specific embodiments of the application and is not intended to limit the scope of the application, which is defined by the claims. Various changes or modifications can be made to the embodiments described above without departing from the scope of the application.

Claims

1. A multi-purpose sand core assembly clamp, characterized in that, The multipurpose sand core box clamp includes: a bracket (1), a movable support arm (2), and a fixed support arm (3). The bracket (1) is provided with the movable support arm (2) and the fixed support arm (3). Both the movable support arm (2) and the fixed support arm (3) are provided with a clamping mechanism (4) for clamping the sand core (6). The movable support arm (2) is used to move toward the fixed support arm (3) so that the clamping mechanism (4) clamps the sand core (6). Both the movable support arm (2) and the fixed support arm (3) are provided with a swing transport mechanism (5) at one end away from the bracket (1). The swing transport mechanism (5) includes a transport hook (51) rotatably provided. The transport hook (51) is used to rotate to be parallel to the side wall of the sand core (6) after the box is closed, so that the transport hook (51) extends into the groove (61) on the side wall of the sand core (6).

2. The multi-purpose sand core assembly clamp as described in claim 1, characterized in that, The swing conveying mechanism (5) further includes: a flange seat (52), a swing shaft (53), and a fixed seat (54); The second ends of the movable support arm (2) and the fixed support arm (3) are both fixedly provided with the flange seat (52), the swing shaft (53) is rotatably provided on the flange seat (52), the fixed seat (54) is connected to the first end of the swing shaft (53), and the transport hook (51) is fixedly provided on the fixed seat (54).

3. The multi-purpose sand core assembly clamp as described in claim 2, characterized in that, The swing conveying mechanism (5) further includes a swing cylinder (55); the swing cylinder (55) is fixedly installed on the flange seat (52), and the output shaft of the swing cylinder (55) is fixedly connected to the second end of the swing shaft (53).

4. The multi-purpose sand core assembly clamp as described in claim 3, characterized in that, The rotation range of the output shaft of the swing cylinder (55) is 0° to 90°.

5. The multi-purpose sand core assembly clamp as described in any one of claims 1-4, characterized in that, The clamping mechanism (4) includes: a fixed clamping plate (41), a movable clamping plate (42), a guide shaft (43), and a driving device; The movable support arm (2) and the fixed support arm (3) are each provided with the guide shaft (43), the fixed clamping plate (41) and the driving device. The movable clamping plate (42) is slidably disposed on the guide shaft (43). The fixed clamping plate (41) and the movable clamping plate (42) are arranged in pairs. The driving device is used to drive the movable clamping plate (42) to move along the guide shaft (43) so that the fixed clamping plate (41) and the movable clamping plate (42) clamp one side of the sand core (6).

6. The multi-purpose sand core assembly clamp as described in claim 5, characterized in that, Both the fixed clamping plate (41) and the movable clamping plate (42) are provided with buffer pads (44) for contacting the sand core (6).

7. The multi-purpose sand core assembly clamp as described in claim 6, characterized in that, Both the fixed clamping plate (41) and the movable clamping plate (42) are provided with floating components, which include a limiting plate (45), a floating plate (46) and a floating rotating shaft (47). The fixed clamp (41) and the movable clamp (42) are both provided with the limiting plate (45). The floating plate (46) is rotatably connected to the limiting plate (45) through the floating shaft (47). The limiting plate (45) is used to limit the rotation angle of the floating plate (46). The buffer pad (44) is installed on the floating plate (46).

8. The multi-purpose sand core assembly clamp as described in any one of claims 1-4, characterized in that, The bracket (1) is provided with a linear guide rail (11), and the movable support arm (2) is provided with a sliding groove that cooperates with the linear guide rail (11).

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