Universal axle housing core clamp

Abstract

The utility model relates to bridge housing lower core frock technical field, concretely relates to a general type bridge housing lower core clamp, general type bridge housing lower core clamp includes installation frame and installs on the distance adjusting mechanism, clamping mechanism and pressure mechanism of installation frame, is provided with a pair of can along the transverse opposite shift support arm on the distance adjusting mechanism, is provided with a pair of can along the longitudinal opposite shift clamping block on the clamping mechanism, is provided with the pressure block that can along the vertical movement on the pressure mechanism. The distance adjusting mechanism, clamping mechanism and pressure mechanism of general type bridge housing lower core clamp are driven in coordination, and the stability of workpiece transportation process is greatly promoted, and the adaptability to the workpiece of different length, width, thickness is strong, reduces the frequency of replacing component corresponding model, ensures transportation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bridge housing lower core tooling technology, specifically to a general-purpose bridge housing lower core clamp. Background Technology

[0002] Sand casting uses inexpensive and readily available molding materials, making it the preferred choice for casting blanks. Therefore, bridge shells are generally obtained through casting. However, casting requires a molding line process, which involves placing the bridge shell sand core into a molding sand box, pouring molten iron into the sand box, and allowing it to solidify to form the bridge shell. Since the quality of the cast bridge shell is directly related to the accuracy of the core placement, the quality requirements for the core are currently quite high.

[0003] Currently, core placement is mostly done by robots or manually. However, for bridge housings, most sand cores weigh over 100 kg, making manual handling inconvenient and requiring manual clamps or lifting devices for transport. This results in low core placement efficiency and safety hazards. Robotic core placement involves using a core placement clamp on the robot to hold the bridge housing, and then the robot moves the housing to the designated location. Existing core placement clamps generally only perform simple clamping actions and have poor adaptability to transporting different types of bridge housings. This necessitates frequent changes to the core placement clamp on the robot, leading to low core placement efficiency. Utility Model Content

[0004] (a) Technical problems to be solved In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a universal axle housing lower core clamp, which solves the technical problem that the existing lower core clamp has poor adaptability to clamping different models of axle housings.

[0005] (II) Technical Solution To achieve the above objectives, the general-purpose bridge housing lower core clamp of this utility model includes a mounting frame and an adjustment mechanism, a clamping mechanism and a pressing mechanism mounted on the mounting frame; The adjusting mechanism is provided with a pair of support arms that can move relative to each other in the lateral direction; the support arms are provided with insertion holes that pass through in the lateral direction. The clamping mechanism is provided with a pair of clamping blocks that can move relative to each other in the longitudinal direction; The clamping mechanism is equipped with a pressure block that can move vertically.

[0006] Optionally, the adjusting mechanism further includes a rotary drive, a gear, a pair of racks, and a pair of slides; The rotary drive is mounted on the mounting bracket; the rotating shaft of the rotary drive is connected to the gear; Both of the aforementioned slide plates are slidably connected to the mounting bracket in a lateral direction; one end of each slide plate is connected to the rack and pinion, and the other end is connected to the support arm; The two sides of the gear mesh with a pair of racks, so that the pair of support arms can move synchronously in opposite directions.

[0007] Optionally, the skateboard includes a connecting plate and a strip plate; The connecting plate and the mounting bracket are slidably connected laterally; the support arm is disposed at the bottom end of the connecting plate; The strip plate is connected to the connecting plate; the rack is installed at the top of the strip plate.

[0008] Optionally, the support arm includes a support plate and a connecting plate; The top end of the tray is connected to the slide plate, and the bottom end is detachably connected to the connecting plate; The connecting plate has a transverse through-hole; the axes of the through-holes of the pair of support arms are collinear.

[0009] Optionally, the support arm further includes a buffer component disposed on the inner side of the support plate; the buffer component includes a sliding block, a connecting seat, a connecting rod, and an abutment seat; The tray has a vertically oriented sliding groove inside; one end of the sliding block slides and is elastically connected to the sliding groove, and the other end is connected to the connecting seat; The abutment is located below the connecting seat, and the two are connected by the connecting rod; The bottom surface of the abutment is not lower than the lowest point of the socket.

[0010] Optionally, the connecting rod is detachably connected to the connecting seat.

[0011] Optionally, the clamping mechanism includes a drive cylinder, a clamping cylinder, and a pair of clamping blocks; The drive cylinder is mounted on the mounting bracket; the telescopic rod of the drive cylinder is connected to the clamping cylinder; both ends of the clamping cylinder are connected to a pair of clamping blocks in a corresponding manner; the clamping cylinder can drive the clamping blocks to move longitudinally.

[0012] Optionally, the clamping mechanism further includes a clamping cylinder, a guide plate, and a guide rod; The clamping cylinder and the guide plate are mounted on the mounting plate; The telescopic rod of the clamping cylinder and the guide rod are both arranged vertically and are connected to the pressure block.

[0013] (III) Beneficial Effects The beneficial effects of this utility model are: When the insertion holes on the pair of support arms move laterally, they can be inserted into the metal rods pre-drilled at both ends of the workpiece. The metal rods are pressed against the support arms by the weight of the workpiece itself, so that the adjusting mechanism can drive the workpiece to move vertically up and down. The adjusting mechanism can adapt to workpieces of different lengths for transfer, improving the adaptability of the universal bridge housing lower core fixture to clamping different types of workpieces.

[0014] The clamping blocks can hold the front and rear sides of the workpiece longitudinally, effectively preventing the workpiece from shaking during transportation. The clamping blocks can also adapt to workpieces of different widths, further improving the adaptability of the universal bridge housing lower core clamp to clamp different types of workpieces.

[0015] The pressure block can press vertically against the top surface of the workpiece, and cooperate with the insertion hole to achieve vertical positioning of the workpiece. It can adapt to workpieces of different thicknesses, further improving the adaptability of the universal bridge housing lower core fixture to clamp different types of workpieces. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the universal bridge housing lower core clamp for holding the workpiece according to this utility model; Figure 2 This is a top view of the universal bridge housing lower core clamp of this utility model; Figure 3 This is a schematic diagram of the adjusting mechanism of this utility model; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 for Figure 3 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram of the clamping mechanism of this utility model; Figure 7 This is a schematic diagram of the pressing mechanism of this utility model.

[0017] [Explanation of Labels in the Attached Image] 1: Mounting bracket; 2: Adjustment mechanism; 21: Support arm; 211: Support plate; 2111: Sliding hole; 212: Connecting plate; 2121: Insertion hole; 22: Rotary drive; 23: Gear; 24: Rack; 25: Slide plate; 251: Connecting plate; 252: Strip plate; 26: Buffer; 261: Sliding block; 262: Connecting seat; 263: Connecting rod; 264: Abutment seat; 3: Clamping mechanism; 31: Clamping block; 32: Drive cylinder; 33: Clamping cylinder; 4: Clamping mechanism; 41: Clamping block; 42: Clamping cylinder; 43: Guide plate; 44: Guide rod; 5: Workpiece. Detailed Implementation

[0018] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0020] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] See Figure 1 and Figure 2 This utility model provides a universal bridge housing lower core clamp, which includes a mounting frame 1 and an adjusting mechanism 2, a clamping mechanism 3, and a pressing mechanism 4 mounted on the mounting frame 1. The adjusting mechanism 2 is provided with a pair of support arms 21 that can move relative to each other in the lateral direction. The support arms 21 have through holes 2121 in the lateral direction. The clamping mechanism 3 is provided with a pair of clamping blocks 31 that can move relative to each other in the longitudinal direction. The pressing mechanism 4 is provided with a pressing block 41 that can move in the vertical direction. The lateral direction is the moving direction of the adjusting mechanism 2, the longitudinal direction is the clamping direction of the clamping mechanism 3, and the vertical direction is the extension and retraction direction of the pressing mechanism 4. The mounting frame 1 is connected to an external six-axis robot. The six-axis robot drives the mounting frame 1 to move, and together with the adjusting mechanism 2, the clamping mechanism 3, and the pressing mechanism 4, transports the workpiece 5 to the designated station to complete the lower core of the workpiece 5.

[0023] When the insertion holes 2121 on the pair of support arms 21 move laterally, they can be inserted into the metal rods reserved at both ends of the workpiece 5. The metal rods are pressed against the support arms 21 by the weight of the workpiece 5 itself, so that the adjusting mechanism 2 can drive the workpiece 5 to move vertically up and down. The adjusting mechanism 2 can adapt to workpieces 5 of different lengths for transfer, improving the adaptability of the universal bridge housing lower core fixture to clamp different types of workpieces 5.

[0024] The clamping block 31 can clamp the front and rear sides of the workpiece 5 along the longitudinal direction, effectively preventing the workpiece 5 from shaking or moving during transportation. In addition, the clamping block 31 can adapt to workpieces 5 of different widths, further improving the adaptability of the universal bridge housing lower core fixture to clamp different types of workpieces 5.

[0025] The pressure block 41 can press vertically against the top surface of the workpiece 5, cooperating with the insertion hole 2121 to achieve vertical positioning of the workpiece 5. This allows it to accommodate workpieces 5 of different thicknesses, further improving the adaptability of the universal bridge housing lower core clamp to clamp different types of workpieces 5. Optionally, the diameter or height of the insertion hole 2121 is larger than the outer diameter of the metal rod, making it easier for the metal rod to connect with the insertion hole 2121 and reducing the difficulty of connection. Workpieces 5 of different weights are equipped with metal rods of different outer diameters, allowing the insertion hole 2121 to accommodate metal rods of different outer diameters, enabling the insertion of workpieces 5 of different weights. During core setting, the bottom surface of the workpiece 5 contacts the mold. If the diameter of the insertion hole 2121 matches the outer diameter of the metal rod, the mold will apply pressure to the workpiece 5, i.e., the universal bridge housing lower core clamp. The large impact force reduces the service life of the universal bridge housing lower core fixture. Based on this, by enlarging the diameter of the insertion hole 2121, the clamping mechanism 3 and the pressing mechanism 4 are reset before the workpiece 5 approaches the mold unloading station. After the workpiece 5 touches the mold, the insertion hole 2121 has enough space to ensure that the universal bridge housing lower core fixture can descend a certain distance vertically to ensure that the workpiece 5 is completely placed in place. At the same time, the impact force of the mold on the universal bridge housing lower core fixture is eliminated, which greatly improves the service life of the universal bridge housing lower core fixture.

[0026] By replacing manual labor with an industrial robot equipped with this universal bridge housing core-setting fixture, core-setting of bridge housings of various specifications can be achieved. This eliminates the need for manual switching of tooling on the core-setting machine or robot, reducing labor intensity, improving the quality of bridge housing core-setting, and ultimately enhancing the quality of bridge housings produced on the molding line. Simultaneously, the universal bridge housing core-setting fixture reduces the difficulty of manual operation, decreases the number of workers required, significantly lowers production costs, and reduces safety hazards associated with manual operation. The overall structure is compact, simple, easy to operate, aesthetically pleasing, and delivers excellent results.

[0027] like Figure 3 and Figure 4As shown, the adjusting mechanism 2 also includes a rotary driver 22, a gear 23, a pair of racks 24, and a pair of sliding plates 25. The rotary driver 22 is mounted on the mounting frame 1. The shaft of the rotary driver 22 is connected to the gear 23. Both sliding plates 25 are laterally slidably connected to the mounting frame 1. One end of each sliding plate 25 is connected to the rack 24, and the other end is connected to the support arm 21. The two sides of the gear 23 mesh with the pair of racks 24, enabling the pair of support arms 21 to move synchronously in opposite directions. Specifically, the rotary driver 22 can be a motor or a gearbox, which can be used in conjunction with a reducer. The gear 23 meshes with the pair of racks 24 on both sides, enabling the racks 24 to move synchronously in opposite directions, thereby achieving synchronous reverse movement of the pair of support arms 21. Compared to the movement of a single support arm 21, synchronous movement improves the docking efficiency of the adjusting mechanism 2. The high transmission accuracy of the gear and rack effectively improves the adjusting accuracy of the adjusting mechanism 2. Optionally, the mounting bracket 1 has a built-in slide rail, and the slide plate 25 is slidably connected to the slide rail in a lateral direction, which improves the transmission stability and transmission accuracy.

[0028] Furthermore, the sliding plate 25 includes a connecting plate 251 and a strip plate 252; the connecting plate 251 is slidably connected to the mounting frame 1 in the lateral direction; the support arm 21 is disposed at the bottom end of the connecting plate 251; one side of the strip plate 252 is connected to the side of the connecting plate 251, and the top surface of the other end is connected to the bottom surface of the rack 24. In this embodiment, the sliding plate 25 has a figure-9 shaped structure, the connecting plate 251 is hollow to reduce weight, and the bottom end of the strip plate 252 is connected to the rack 24, which occupies little space. Moreover, this structure effectively improves the lateral sliding path of a pair of sliding plates 25, and improves the adaptability of the adjusting mechanism 2 to docking or inserting workpieces 5 of different lengths.

[0029] See Figure 5 The support arm 21 includes a support plate 211 and a connecting plate 212. The top end of the support plate 211 is connected to the connecting plate 251, and the bottom end is detachably connected to the connecting plate 212. The connecting plate 212 has a transverse through-hole 2121. The axes of the through-holes 2121 of the pair of support arms 21 are collinear. Specifically, the connecting plate 212 may have a reinforcing rib to ensure the support strength for the workpiece 5. The through-holes 2121 of the pair of support arms 21 are set at the same vertical height to ensure stable support for the workpiece 5. The support plate 211 and the connecting plate 212 are detachably connected. By replacing the connecting plate 212 with different models, the adaptability to inserting different models of workpieces 5 can be further improved.

[0030] Secondly, the support arm 21 also includes a buffer 26 disposed on the inner side of the support plate 211; the buffer 26 includes a sliding block 261, a connecting seat 262, a connecting rod 263, and an abutment seat 264; the support plate 211 has a vertically arranged sliding groove 2111 inside; one end of the sliding block 261 slides and is elastically connected to the sliding groove 2111, and the other end is connected to the connecting seat 262; the abutment seat 264 is disposed below the connecting seat 262, and the two are connected by the connecting rod 263; the bottom surface height of the abutment seat 264 is not lower than the lowest point height of the insertion hole 2121. Specifically, the bottom shape and size of the abutment seat 264 are adapted to the shape and size of the end of the workpiece 5. When workpiece 5 contacts the mold, the universal bridge housing lower core fixture will descend a certain distance to ensure that workpiece 5 is fully positioned. Therefore, it is necessary to avoid collisions between the metal rod and the top of the inner wall of the insertion hole 2121 as much as possible. For metal rods with different outer diameters, the corresponding working conditions are different. If the connecting plate 212 is frequently changed, i.e., the insertion hole 2121 with different diameters is changed, it will affect the transportation efficiency. Based on this, a buffer 26 is added. For metal rods with different outer diameters, even if some metal rods with larger outer diameters collide with the top of the inner wall of the insertion hole 2121, the buffer 26 can elastically buffer the collision force, thereby reducing the collision force on the universal bridge housing lower core fixture and extending the service life of the universal bridge housing lower core fixture. Among them, the bottom height of the abutment seat 264 is not lower than the lowest point height of the insertion hole 2121, ensuring that the abutment seat 264 will not interfere with the process of the metal rod being inserted laterally into the insertion hole 2121.

[0031] Optionally, the connecting rod 263 and the connecting seat 262 are detachably connected. In this embodiment, the connecting seat 262 is provided with a set screw, and the connecting rod 263 passes through the connecting seat 262 vertically. By adjusting the position of the connecting rod 263 vertically, the bottom height of the abutment seat 264 can be adjusted. Then, the set screw is tightened so that the set screw abuts against the connecting rod 263, thereby fixing the abutment seat 264.

[0032] See Figure 6 The clamping mechanism 3 also includes a drive cylinder 32 and a clamping cylinder 33. The drive cylinder 32 is mounted on the mounting bracket 1. The telescopic rod of the drive cylinder 32 is connected to the clamping cylinder 33. Both ends of the clamping cylinder 33 are connected to a pair of clamping blocks 31. The clamping cylinder 33 can drive the clamping blocks 31 to move longitudinally. Specifically, the drive cylinder 32 can be an electric push rod, a pneumatic cylinder, or a hydraulic cylinder, and the clamping cylinder 33 can be a single push rod or a double push rod hydraulic cylinder. The clamping block 31 is constructed as a hook, in an L-shape, which can hook the edge of the workpiece 5 to prevent the workpiece 5 from shaking on the universal bridge housing lower core clamp during transportation, thus providing reliability for the universal bridge housing lower core clamp.

[0033] like Figure 7As shown, the clamping mechanism 4 also includes a clamping cylinder 42, a guide plate 43, and a guide rod 44; the clamping cylinder 42 and the guide plate 43 are mounted on the mounting plate; the telescopic rod of the clamping cylinder 42 and the guide rod 44 are both arranged vertically and are both connected to the pressure block 41. Specifically, the clamping cylinder 42 can be an electric push rod, a pneumatic cylinder, or a hydraulic cylinder. By setting a guide plate 43, the guide rod 44 can be integrated into the pressure block 41, which optimizes the space occupied by the clamping mechanism 4 and ensures that the two support points on the top surface of the pressure block 41 are correspondingly distributed on both sides, making the force on the pressure block 41 more stable.

[0034] First, the adjusting mechanism 2 adapts to the length of the workpiece 5, holding the two metal rods of the workpiece 5 to achieve lateral limitation of the workpiece 5; then, the clamping mechanism 4 presses the workpiece 5 tightly against a pair of support arms 21 to achieve vertical limitation of the workpiece 5; finally, the clamping mechanism 3 clamps the front and rear side walls of the workpiece 5 to achieve longitudinal limitation of the workpiece 5. The adjusting mechanism 2, clamping mechanism 3, and clamping mechanism 4 of the general-purpose bridge housing lower core fixture work together to significantly improve the stability of the workpiece 5 during transportation, and are highly adaptable to workpieces 5 of different lengths, widths, and thicknesses, reducing the frequency of changing the corresponding model of components and ensuring transportation efficiency. It is particularly suitable for mixed-model production mode with multiple models or single-workpiece production mode that requires frequent model switching.

[0035] It should be understood that the above description of the specific embodiments of this utility model is only for illustrating the technical route and features of this utility model, and its purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. However, this utility model is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of this utility model should be covered by the protection scope of this utility model.

Claims

1. A universal axle housing core fixture, comprising: The universal bridge housing lower core clamp includes a mounting frame (1) and an adjustment mechanism (2), a clamping mechanism (3) and a pressing mechanism (4) mounted on the mounting frame (1). The adjusting mechanism (2) is provided with a pair of support arms (21) that can move relative to each other in the lateral direction; the support arms (21) are provided with insertion holes (2121) that pass through in the lateral direction. The clamping mechanism (3) is provided with a pair of clamping blocks (31) that can move relative to each other in the longitudinal direction. The pressing mechanism (4) is provided with a pressing block (41) that can move vertically.

2. The universal axle housing core fixture of claim 1, wherein, The adjusting mechanism (2) also includes a rotary drive (22), a gear (23), a pair of racks (24) and a pair of slides (25); The rotary drive (22) is mounted on the mounting bracket (1); the shaft of the rotary drive (22) is connected to the gear (23); Both of the aforementioned sliding plates (25) are slidably connected to the mounting bracket (1) in a transverse direction; one end of the sliding plate (25) is connected to the rack (24), and the other end is connected to the support arm (21); The two sides of the gear (23) mesh with a pair of racks (24) to enable the pair of support arms (21) to move synchronously in opposite directions.

3. The universal axle housing core fixture of claim 2, wherein, The skateboard (25) includes a connecting plate (251) and a strip plate (252); The connecting plate (251) and the mounting bracket (1) are slidably connected in the lateral direction; the support arm (21) is disposed at the bottom end of the connecting plate (251); The strip plate (252) is connected to the connecting plate (251); the rack (24) is installed at the top of the strip plate (252).

4. The universal axle core jig of claim 2, wherein, The support arm (21) includes a support plate (211) and a connecting plate (212); The top end of the tray (211) is connected to the slide plate (25), and the bottom end is detachably connected to the connecting plate (212); The connecting plate (212) has a transverse through-hole (2121); the axes of the through-holes (2121) of the pair of support arms (21) are collinear.

5. The universal axle core jig of claim 4, wherein, The support arm (21) also includes a buffer (26) disposed on the inner side of the tray (211); the buffer (26) includes a sliding block (261), a connecting seat (262), a connecting rod (263) and an abutment seat (264). The tray (211) has a vertically arranged sliding groove (2111) inside; one end of the sliding block (261) is slidably and elastically connected to the sliding groove (2111), and the other end is connected to the connecting seat (262); The abutment (264) is disposed below the connecting seat (262), and the two are connected by the connecting rod (263); The bottom surface height of the abutment (264) is not lower than the lowest point height of the socket (2121).

6. The universal axle core jig of claim 5, wherein, The connecting rod (263) is detachably connected to the connecting seat (262).

7. The universal axle core jig of any of claims 1-4, wherein, The clamping mechanism (3) also includes a drive cylinder (32) and a clamping cylinder (33); The drive cylinder (32) is mounted on the mounting bracket (1); the telescopic rod of the drive cylinder (32) is connected to the clamping cylinder (33); the two ends of the clamping cylinder (33) are connected to a pair of clamping blocks (31) in a corresponding manner; the clamping cylinder (33) can drive the clamping blocks (31) to move longitudinally.

8. The universal axle core jig of any of claims 1-4, wherein, The clamping mechanism (4) also includes a clamping cylinder (42), a guide plate (43), and a guide rod (44). The clamping cylinder (42) and the guide plate (43) are mounted on the mounting bracket (1); The telescopic rod of the clamping cylinder (42) and the guide rod (44) are both arranged vertically and are connected to the pressure block (41).

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