Shared type mechanical arm sand core setting clamp

Abstract

The utility model provides a shared mechanical arm sand core setting clamp which comprises a top plate, an adjustable end clamping mechanism, an expansion mechanism and a fixed end clamping mechanism, and a clamp translation plate of the adjustable end clamping mechanism is mounted on a clamp guide rail at the left end of the top plate in a translation manner; a front clamping plate of the fixed end clamping mechanism is provided with a first front clamping jaw position and a second front clamping jaw position which are used for installing a front clamping jaw, and a rear clamping plate is provided with a first rear clamping jaw position and a second rear clamping jaw position which are used for installing a rear clamping jaw. By the adoption of the technical scheme, the left side of the core setting clamp is of an adjustable structure, the right end of the core setting clamp is of a clamping jaw quick changing mode, the structure is simple and stable, quick position changing can be conveniently achieved, and accurate transferring and core setting of a first mechanical arm sand core and a second mechanical arm sand core can be achieved. The core setting clamp for the first mechanical arm sand core and the second mechanical arm sand core can be shared, the occupied space of a jig warehouse is reduced, online switching on production lines can be achieved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sand casting, in particular to a common mechanical arm sand core lowering clamp. Background Art

[0002] The robotic arm is an important part of an industrial robot. To ensure that it has a high structural strength, the robotic arm is usually cast. Industrial robots usually include multiple types of robotic arms, and the same robot may have robotic arms of different specifications and sizes. Since the robotic arms of industrial robots are relatively long, some are about 2 meters long. Figure 1-2 A first manipulator sand core having a length of about 1.6 meters is shown, as shown in the attached Figure 3-4 A second robot arm sand core with a length of about 1.8 meters is shown. The two sand cores are of different lengths but similar in structure. At present, the two sand cores are generally configured with lower core fixtures for moving the sand cores to the sand box, which results in a large amount of fixture warehouse space being occupied. When switching products on the casting production line, the corresponding fixture needs to be replaced, and line change takes a long time. Utility Model Content

[0003] In order to overcome the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a common type mechanical arm sand core lowering clamp.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model to solve the technical problem is: a common type mechanical arm sand core lower core clamp, including a top plate, an adjustable end clamping mechanism, a tightening mechanism and a fixed end clamping mechanism, the adjustable end clamping mechanism is installed at the left end of the top plate, the tightening mechanism is installed at the middle of the top plate, and the fixed end clamping mechanism is installed at the right end of the top plate;

[0005] The adjustable end clamping mechanism includes a clamp translation plate, a clamp positioning pin and a clamp locking bolt. A clamp guide rail arranged in the length direction is installed at the left end of the top plate. The clamp translation plate can be translationally installed on the slider of the clamp guide rail. The clamp translation plate is provided with a clamp positioning hole, a clamp threaded hole, a left-end clamping claw mechanism and a left-end positioning shaft. The top plate is provided with a clamp first position limit block, a clamp second position limit block, a clamp first position positioning hole, a clamp second position positioning hole, a clamp first position bolt through hole and a clamp second position bolt through hole;

[0006] The expansion mechanism includes an intermediate cylinder and an inflatable shaft, wherein the intermediate cylinder is vertically installed downwardly at the middle of the top plate, and the inflatable shaft is connected to the telescopic rod of the intermediate cylinder;

[0007] The fixed end clamping mechanism includes a right end clamping jaw mechanism and a right end positioning shaft, the right end clamping jaw mechanism includes a front clamping jaw, a front clamping plate, a rear clamping jaw, a rear clamping plate and a forward and backward driving mechanism, the front clamping plate is provided with a first front clamping jaw position and a second front clamping jaw position for installing the front clamping jaw, the rear clamping plate is provided with a first rear clamping jaw position and a second rear clamping jaw position for installing the rear clamping jaw, and the forward and backward driving mechanism is used to drive the front clamping plate and the rear clamping plate to synchronously perform opening and closing actions along the forward and backward directions.

[0008] With the technical solution of the utility model, the core clamp adopts an adjustable structure on the left side and a quick-change clamp on the right side. The structure is simple and stable, which is convenient for rapid replacement and can realize accurate transfer of the first mechanical arm sand core and the second mechanical arm sand core. The first mechanical arm sand core and the second mechanical arm sand core clamp can be shared, which reduces the space occupied by the fixture warehouse, can realize online switching on the production line, and improve production efficiency.

[0009] Furthermore, the left-end clamping mechanism includes a left guide shaft assembly, a left clamping plate, a left clamping jaw and a left cylinder. The left guide shaft assemblies arranged along the left and right directions are respectively installed on the front and rear sides of the lower surface of the clamp translation plate. The front and rear parts of the left clamping plate are respectively slidably installed on the guide shafts of the left guide shaft assembly. The left clamping plate is connected to the telescopic shaft of the left cylinder, and a left clamping jaw is respectively installed on the front and rear sides of the lower part of the left clamping plate.

[0010] By adopting the above preferred solution, the block part at the left end of the sand core of the robot arm can be stably clamped.

[0011] Furthermore, the two left clamping jaws are respectively located in front and at the rear of the left side of the left end positioning shaft.

[0012] By adopting the above preferred solution, the position accuracy of the sand core clamping by the robot arm is improved.

[0013] Furthermore, the forward and backward driving mechanism of the right-end clamping mechanism includes a right cylinder, a spacer connecting sleeve and a right guide shaft assembly. A front makeshift groove for the front clamping plate to pass through is opened at the front of the right end of the top plate, and a rear makeshift groove for the rear clamping plate to pass through is opened at the rear. The right guide shaft assemblies arranged along the front and rear directions are respectively installed at the left and right ends of the front makeshift groove and the rear makeshift groove on the top plate. The upper left and right ends of the front clamping plate and the rear clamping plate are respectively slidably installed on the guide shaft of the right guide shaft assembly. The spacer connecting sleeve is connected to the telescopic rod of the right cylinder, the cylinder body of the right cylinder is connected to the rear clamping plate, and the end of the spacer connecting sleeve is connected to the front clamping plate.

[0014] By adopting the above preferred solution, the block part at the right end of the sand core of the robot arm can be stably clamped. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the upper surface of the sand core of the first robot arm.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the lower surface of the sand core of the first robot arm.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper surface of the sand core of the second robot arm.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the lower surface of the sand core of the second robot arm.

[0020] Figure 5 It is a structural schematic diagram of a first mechanical arm sand core clamped under a core lowering clamp of the utility model.

[0021] Figure 6 It is a structural schematic diagram of the core lowering clamp of the utility model.

[0022] Figure 7 It is a structural schematic diagram of the bottom surface of the lower core clamp of the utility model.

[0023] Figure 8 It is a structural schematic diagram of the translation plate of the clamp of the utility model.

[0024] Fig. 9 It is a structural schematic diagram of the bottom surface of the translation plate of the clamp of the utility model.

[0025] The numbers and letters in the figure represent the names of the corresponding parts:

[0026] 10-first mechanical arm sand core; 11-ring body; 12-left end block body; 13-right end block body; 14-inflated shaft hole; 15-right positioning shaft hole; 16-left positioning shaft hole; 20-second mechanical arm sand core; 21-ring body; 22-left end block body; 23-right end block body; 24-inflated shaft hole; 25-right positioning shaft hole; 26-left positioning shaft hole; 61-top plate; 611-first position positioning hole of the fixture; 612-second position positioning hole of the fixture; 613-first position bolt through hole of the fixture; 614-second position bolt through hole of the fixture; 70-adjustable end clamping mechanism; 71-clamp translation plate; 711-clamp positioning hole; 712-clamp threaded hole; 72-clamp positioning pin; 73-clamp locking bolt; 74-clamp guide rail; 75-left end clamping jaw mechanism; 751-left guide shaft assembly; 752-left clamping plate; 753-left clamping jaw; 754-left cylinder; 76-left end positioning shaft; 77-clamp first position limit block; 78-clamp second position limit block; 80-expansion mechanism; 81-middle cylinder; 82-inflatable shaft; 90-fixed end clamping mechanism; 91-right end clamping jaw mechanism; 911-front clamping jaw; 912-front clamping plate; 9121-first front clamping jaw position; 9122-second front clamping jaw position; 913-rear clamping jaw; 914-rear clamping plate; 9141-first rear clamping jaw position; 9142-second rear clamping jaw position; 915-forward and backward driving mechanism; 9151-right cylinder; 9152-interval connecting sleeve; 9153-right guide shaft assembly; 92-right end positioning shaft. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1-4As shown, the length of the first robotic arm sand core 10 is smaller than that of the second robotic arm sand core 20, the annular body 11 at the bottom surface of the right end of the first robotic arm sand core 10 and the annular body 21 at the bottom surface of the right end of the second robotic arm sand core 20 have the same outer diameter, the left end of the first robotic arm sand core 10 has a left end block portion 12, and the left end of the second robotic arm sand core 20 has a left end block portion 22; the right end of the first robotic arm sand core 10 has a right end block portion 13, and the right end of the second robotic arm sand core 20 has a right end block portion 23. An inflatable shaft hole 14 is provided in the middle of the first robot arm sand core 10, and an inflatable shaft hole 24 is provided in the middle of the second robot arm sand core 20; a right positioning shaft hole 15 is provided on the right end block part 13 of the first robot arm sand core, and a right positioning shaft hole 25 is provided on the right end block part 23 of the second robot arm sand core; a left positioning shaft hole 16 is provided on the left end block part 12 of the first robot arm sand core, and a left positioning shaft hole 26 is provided on the left end block part 22 of the second robot arm sand core.

[0029] like Figure 5-9 As shown, in one embodiment of the utility model, a common type mechanical arm sand core lower core clamp is provided, comprising a top plate 61, an adjustable end clamping mechanism 70, an expansion mechanism 80 and a fixed end clamping mechanism 90, wherein the adjustable end clamping mechanism 70 is mounted on the left end of the top plate 61, the expansion mechanism 80 is mounted on the middle part of the top plate 61, and the fixed end clamping mechanism 90 is mounted on the right end of the top plate 61;

[0030] The adjustable end clamping mechanism 70 includes a clamp translation plate 71, a clamp positioning pin 72 and a clamp locking bolt 73. A clamp guide rail 74 arranged along the length direction is installed at the left end of the top plate 61. The clamp translation plate 71 can be translationally installed on the slider of the clamp guide rail 74. The clamp translation plate 71 is provided with a clamp positioning hole 711, a clamp threaded hole 712, a left end clamping claw mechanism 75 and a left end positioning shaft 76. The top plate 61 is provided with a clamp first position limit block 77, a clamp second position limit block 78, a clamp first position positioning hole 611, a clamp second position positioning hole 612, a clamp first position bolt through hole 613 and a clamp second position bolt through hole 614;

[0031] The expansion mechanism 80 includes an intermediate cylinder 81 and an inflatable shaft 82. The intermediate cylinder 81 is vertically installed downwardly in the middle of the top plate 61. The inflatable shaft 82 is connected to the telescopic rod of the intermediate cylinder 81. The inflatable shaft 82 matches the inflatable shaft hole 14 of the first robot arm sand core 10 or the inflatable shaft hole 24 of the second robot arm sand core 20.

[0032] The fixed end clamping mechanism 90 includes a right-end clamping jaw mechanism 91 and a right-end positioning shaft 92. The right-end positioning shaft 92 matches the right positioning shaft hole 15 of the first robotic arm sand core 10 or the right positioning shaft hole 25 of the second robotic arm sand core 20. The right-end clamping jaw mechanism 91 includes a front clamping jaw 911, a front clamping plate 912, a rear clamping jaw 913, a rear clamping plate 914 and a forward and backward driving mechanism 915. The front clamping plate 912 is provided with a first front clamping jaw position 9121 and a second front clamping jaw position 9122 for installing the front clamping jaw 911. The rear clamping plate 914 is provided with a first rear clamping jaw position 9141 and a second rear clamping jaw position 9142 for installing the rear clamping jaw 913. The forward and backward driving mechanism 915 is used to drive the front clamping plate 912 and the rear clamping plate 913 to synchronously open and close along the forward and backward directions.

[0033] The beneficial effects of adopting the above technical solution are: accurately grasping the similarities and differences of the main parts of the sand core of the first robot arm and the sand core of the second robot arm, taking the torus of the same size of the two as the reference, the sand core mold adopts a fixed type on the right side and an adjustable structure on the left side, and the transposition structure is simple and stable, ensuring that it can be used for the precise positioning of the sand cores of the two robot arms. The lower core fixture adopts an adjustable structure on the left side and a quick-change clamp on the right end. The structure is simple and stable, which is convenient for rapid transposition and can realize the precise transfer of the sand core of the first robot arm and the sand core of the second robot arm. The molds and fixtures used for the lower cores of the sand cores of the first robot arm and the second robot arm can be shared, which reduces the space occupied by the fixture warehouse, can realize online switching on the production line, and improve production efficiency.

[0034] In other embodiments of the present invention, when it is necessary to clamp and lift the first mechanical arm sand core 10, the clamp translation plate 71 abuts against the clamp first position limit block 77, the clamp positioning pin 72 can be inserted into the clamp first position positioning hole 611 and the clamp positioning hole 711, the clamp locking bolt 73 can pass through the clamp first position bolt through-hole 613 and be connected to the clamp threaded hole 712, the left end clamping jaw mechanism 75 is snap-fitted with the left end block body 12 of the first mechanical arm sand core 10, and the left end positioning shaft 76 is snap-fitted with the left positioning shaft hole 16 of the first mechanical arm sand core; the front clamping jaw 911 is installed in the first front clamping jaw position 9121 of the front clamping plate 912, and the rear clamping jaw 913 is installed in the first rear clamping jaw position 9141 of the rear clamping plate 914, and the front clamping jaw 911 and the rear clamping jaw 913 are snap-fitted with the right end block body 13 of the first mechanical arm sand core;

[0035] When it is necessary to clamp and lift the second mechanical arm sand core 20, the clamp translation plate 71 abuts against the clamp second position limit block 78, the clamp positioning pin 72 can be inserted into the clamp second position positioning hole 612 and the clamp positioning hole 711, the clamp locking bolt 73 can pass through the clamp second position bolt through-hole 614 and be connected to the clamp threaded hole 712, the left end clamping jaw mechanism 75 is snap-fitted with the left end block body 22 of the second mechanical arm sand core, and the left end positioning shaft 76 is snap-fitted with the left positioning shaft hole 26 of the second mechanical arm sand core; the front clamping jaw 911 is installed in the second front clamping jaw position 9122 of the front clamping plate 912, and the rear clamping jaw 913 is installed in the second rear clamping jaw position 9142 of the rear clamping plate 914, the front clamping jaw 911 and the rear clamping jaw 913 are snap-fitted with the right end block body 23 of the second mechanical arm sand core;

[0036] The beneficial effect of adopting the above technical solution is to ensure the convenience of the clamp translation plate and the front and rear clamping jaws in the replacement and the positioning reliability after the replacement.

[0037] like Fig. 9 As shown, in some other embodiments of the utility model, the left end clamp mechanism 75 includes a left guide shaft assembly 751, a left clamp plate 752, a left clamp 753 and a left cylinder 754. The left guide shaft assembly 751 arranged along the left and right directions is respectively installed on the front side and the rear side of the lower surface of the clamp translation plate 71. The front and rear parts of the left clamp plate 752 are respectively slidably installed on the guide shaft of the left guide shaft assembly 751. The left clamp plate 752 is connected to the telescopic shaft of the left cylinder 754. A left clamp 753 is respectively installed on the front side and the rear side of the lower part of the left clamp plate 752. The two left clamps 753 are respectively located in front of and behind the left side of the left end positioning shaft 76. The beneficial effect of adopting the above technical solution is that the left end block of the manipulator sand core can be stably clamped.

[0038] like Figure 6 , 7 As shown, in some other embodiments of the utility model, the front-to-back driving mechanism of the right end clamp mechanism 91 includes a right cylinder 9151, an interval connecting sleeve 9152 and a right guide shaft assembly 9153. A front clearance groove for the front clamp plate 912 to pass through is provided at the front of the right end of the top plate 61, and a rear clearance groove for the rear clamp plate 914 to pass through is provided at the rear. The right guide shaft assembly 9153 arranged along the front-to-back direction is respectively installed at the left and right ends of the front clearance groove and the rear clearance groove on the top plate. The upper left and right ends of the front clamp plate 912 and the rear clamp plate 914 are respectively slidably installed on the guide shaft of the right guide shaft assembly 9153. The interval connecting sleeve 9152 is connected to the telescopic rod of the right cylinder 9151, the cylinder body of the right cylinder 9151 is connected to the rear clamp plate 914, and the end of the interval connecting sleeve 9152 is connected to the front clamp plate 912. The beneficial effect of adopting the above technical solution is that the right end block of the manipulator sand core can be stably clamped.

[0039] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable ordinary technicians in the field to understand the content of the utility model and implement it. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A common type manipulator sand core clamp, characterized in that: It includes a top plate, an adjustable end clamping mechanism, an expansion mechanism and a fixed end clamping mechanism, wherein the adjustable end clamping mechanism is installed at the left end of the top plate, the expansion mechanism is installed at the middle of the top plate, and the fixed end clamping mechanism is installed at the right end of the top plate; The adjustable end clamping mechanism includes a clamp translation plate, a clamp positioning pin and a clamp locking bolt. A clamp guide rail arranged in the length direction is installed at the left end of the top plate. The clamp translation plate can be translationally installed on the slider of the clamp guide rail. The clamp translation plate is provided with a clamp positioning hole, a clamp threaded hole, a left-end clamping claw mechanism and a left-end positioning shaft. The top plate is provided with a clamp first position limit block, a clamp second position limit block, a clamp first position positioning hole, a clamp second position positioning hole, a clamp first position bolt through hole and a clamp second position bolt through hole; The expansion mechanism includes an intermediate cylinder and an inflatable shaft, wherein the intermediate cylinder is vertically installed downwardly at the middle of the top plate, and the inflatable shaft is connected to the telescopic rod of the intermediate cylinder; The fixed end clamping mechanism includes a right end clamping jaw mechanism and a right end positioning shaft, the right end clamping jaw mechanism includes a front clamping jaw, a front clamping plate, a rear clamping jaw, a rear clamping plate and a forward and backward driving mechanism, the front clamping plate is provided with a first front clamping jaw position and a second front clamping jaw position for installing the front clamping jaw, the rear clamping plate is provided with a first rear clamping jaw position and a second rear clamping jaw position for installing the rear clamping jaw, and the forward and backward driving mechanism is used to drive the front clamping plate and the rear clamping plate to synchronously perform opening and closing actions along the forward and backward directions.

2. The common type robot arm sand core lowering fixture according to claim 1 is characterized in that: The left-end clamping jaw mechanism includes a left guide shaft assembly, a left clamping plate, a left clamping jaw and a left cylinder. The left guide shaft assembly arranged along the left and right directions is respectively installed on the front and rear sides of the lower surface of the clamp translation plate. The front and rear parts of the left clamping plate are respectively slidably installed on the guide shaft of the left guide shaft assembly. The left clamping plate is connected to the telescopic shaft of the left cylinder, and a left clamping jaw is respectively installed on the front and rear sides of the lower part of the left clamping plate.

3. The common type mechanical arm sand core lowering fixture according to claim 2 is characterized in that: The two left clamping jaws are respectively located in front of and behind the left side of the left end positioning shaft.

4. The common type manipulator sand core lowering fixture according to claim 1, characterized in that: The forward and backward driving mechanism of the right-end clamping jaw mechanism includes a right cylinder, a spacer connecting sleeve and a right guide shaft assembly. A front makeshift groove for the front clamping plate to pass through is opened at the front of the right end of the top plate, and a rear makeshift groove for the rear clamping plate to pass through is opened at the rear. The right guide shaft assemblies arranged along the front and rear directions are respectively installed at the left and right ends of the front makeshift groove and the rear makeshift groove on the top plate. The upper left and right ends of the front clamping plate and the rear clamping plate are respectively slidably installed on the guide shaft of the right guide shaft assembly. The spacer connecting sleeve is connected to the telescopic rod of the right cylinder, the cylinder body of the right cylinder is connected to the rear clamping plate, and the end of the spacer connecting sleeve is connected to the front clamping plate.

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