A fixing device for powder metallurgical gears

Abstract

The utility model discloses a kind of fixing devices of powder metallurgy gear, including base, fixedly arranged with fixing frame on the base top surface, fixedly arranged with hydraulic cylinder in the fixing frame, the piston end of the hydraulic cylinder is rotatably connected with connecting rod, the connecting rod is provided with multiple groups and bottom end is rotatably connected with mounting block, multiple groups are inserted with plug-in groove on the mounting block, plug-in groove is inserted with plugboard, clamping block is fixedly arranged on the outer wall of plug-in rod, multiple groups are provided with fixed mechanism on the mounting block, the fixed mechanism includes plug-in rod and fixed sleeve, plug-in rod is inserted in mounting block and plugboard, fixed sleeve is inserted in the bottom end of plug-in rod, the outer wall of plug-in rod is provided with clamping groove, the inner wall of fixed sleeve is provided with movable slot, the movable slot is provided with multiple groups and inside is slidably provided with clamping block, plugboard is inserted into plug-in groove and plug-in rod is inserted in place, it can be automatically locked, without using spanner to disassemble multiple fixed bolts or disassemble entire clamping mechanism one by one.

Description

Technical Field

[0001] This utility model relates to the field of powder metallurgy gear production and processing technology, and more specifically, it relates to a fixing device for powder metallurgy gears. Background Technology

[0002] In powder metallurgy gear production workshops, where multiple varieties are produced in small batches and product specifications are frequently changed, the fixing device needs to quickly adapt to gears with different modules, number of teeth, and outer diameters for clamping and fixing to meet processing or inspection requirements.

[0003] Existing powder metallurgy gear fixing devices mostly adopt a fixed clamping block structure. The tooth profile and size parameters of the clamping block are designed and manufactured according to specific gear specifications. When the production line needs to switch to process different gear specifications, the corresponding clamping block must be replaced. The replacement operation of the clamping block usually requires the use of a wrench to remove multiple fixing bolts one by one or to disassemble the entire clamping mechanism to remove the old clamping block and install the new clamping block. The disassembly and assembly process is cumbersome and time-consuming, and the operators need to accurately remember and manage multiple sets of clamping blocks of different specifications and their corresponding installation positions. Repeated disassembly and assembly of bolts can easily lead to thread wear or stripping, affecting the reliability of the connection. The replacement efficiency is low and cannot meet the production requirements of flexible manufacturing and rapid changeover, which restricts the utilization rate of powder metallurgy gear processing equipment and the overall efficiency of the production line. Utility Model Content

[0004] In view of the problems existing in the prior art, the present invention provides a fixing device for powder metallurgy gears to solve the technical problems mentioned in the background art. Technical solution

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fixing device for powder metallurgy gears, comprising a base, a fixing frame fixedly mounted on the top surface of the base, a hydraulic cylinder fixedly mounted inside the fixing frame, a connecting rod rotatably connected to the piston end of the hydraulic cylinder, multiple sets of the connecting rod, each with a mounting block rotatably connected to its bottom end, slots formed on each set of mounting blocks, insert plates inserted into the slots, clamping blocks fixedly mounted on the outer wall of the insert rod, and fixing mechanisms provided on each set of mounting blocks, each fixing mechanism comprising an insert rod and a fixing sleeve, the insert rod being inserted into the mounting block and the insert plate, the fixing sleeve being inserted into the bottom end of the insert rod, a slot formed on the outer wall of the insert rod, and a movable groove formed on the inner wall of the fixing sleeve, multiple sets of the movable groove, each with a slidable clamping block on its inner side.

[0006] The present invention is further configured such that push springs are connected between the outer walls of the multiple sets of card blocks and the movable grooves, and an abutment block is fixedly provided at the top of the insertion rod. The multiple sets of push springs provide radial thrust to the card blocks to achieve automatic locking, and the abutment block provides a mounting base for the sliding sleeve and the unlocking mechanism.

[0007] The present invention is further configured such that each of the multiple sets of mounting blocks is fixedly provided with a limiting block at its bottom end, and a limiting groove is provided on the top surface of the base. The limiting groove is provided in multiple sets and is slidably connected to the multiple sets of limiting blocks. The cooperation between the limiting block and the limiting groove provides sliding guidance for the mounting block, ensuring that the clamping block moves smoothly in the radial direction to achieve clamping and adjustment of gears with different outer diameters.

[0008] The present invention is further configured such that each of the multiple sets of mounting blocks is provided with an insertion hole, and each of the multiple sets of insert plates is provided with a fixing hole. The insertion rod is inserted into the insertion hole and the fixing hole. The cooperation between the insertion hole and the fixing hole provides a precise insertion position and guide for the insertion rod, thereby achieving accurate alignment between the clamping block and the mounting block. The standardized interface design allows for quick interchange of clamping blocks of different specifications.

[0009] The present invention is further configured such that an unlocking sleeve is slidably provided on the outer wall of the card slot, and a sliding groove is provided on the outer wall of the insertion rod. The unlocking sleeve slides in the sliding groove, and the sliding groove provides guidance for the unlocking sleeve, ensuring that the unlocking sleeve moves smoothly along the axial direction and accurately pushes the card block out of the card slot.

[0010] The present invention is further configured such that the outer wall of the abutment block is provided with a sliding groove, the sliding groove is provided in multiple sets and a sliding sleeve is slidably connected thereto, a sliding rod is connected between the sliding sleeve and the unlocking sleeve, and the sliding rod is slidably connected to the insertion rod. The multiple sets of sliding grooves provide stable sliding guidance for the sliding sleeve, and the sliding rod accurately transmits the pushing force to the unlocking sleeve to achieve reliable transmission.

[0011] The present invention is further provided that a compression spring is provided between the sliding sleeve and the abutment block, and the compression spring automatically pushes the sliding sleeve to reset so that the unlocking mechanism returns to its initial state, which facilitates quick installation next time.

[0012] The present invention is further configured such that the inner side of each of the multiple sets of clamping blocks is provided with a groove adapted to the gear, and the precise positioning and stable clamping are achieved by the cooperation between the groove and the gear tooth shape. The groove can be customized in shape according to different specifications of gears to achieve universal adaptation. Beneficial effects

[0013] Compared with the prior art, this utility model provides a fixing device for powder metallurgy gears, which has the following beneficial effects: 1. By setting a fixing mechanism on multiple sets of mounting blocks, after inserting the insert plate into the slot, insert the insert rod into the insertion hole and fixing hole. The bottom end of the insert rod pushes multiple sets of locking blocks to slide into the movable groove and squeezes multiple sets of push springs. Then, the multiple sets of push springs reset and push the locking blocks into the slot to complete the locking of the insert rod and achieve quick fixing of the clamping block. The entire installation process only requires inserting the insert plate into the slot and inserting the insert rod into place to automatically lock it. There is no need to use a wrench to remove multiple fixing bolts one by one or disassemble the entire clamping mechanism.

[0014] 2. By pushing the sliding sleeve to drive the sliding rod to slide and compress the compression spring, the sliding rod pushes the unlocking sleeve to slide along the sliding groove and pushes multiple sets of locking blocks to disengage from the locking slot and slide into the movable slot to make way for the insertion rod. Then, the insertion rod is pulled out of the fixing hole and the insertion hole, and the insertion plate is pulled out of the slot to complete the disassembly of the clamping block. The entire disassembly process can be completed quickly by simply pushing the sliding sleeve to unlock and then pulling out the insertion rod and the insertion plate. There is no need to use tools to loosen the bolts one by one or to align the installation hole and tighten the bolts one by one to ensure the accurate position of the clamping block.

[0015] 3. The standardized connection interface design, through the insertion plate into the slot and the insertion rod into the insertion hole and fixing hole, enables universal installation of clamping blocks for different specifications of gears. The inner side of multiple clamping blocks is provided with grooves that are compatible with the gears. The groove shape can be customized according to different modules, number of teeth and outer diameter of gears. The connection between the clamping block and the fixing device adopts a unified insertion plate and insertion rod interface structure. When changing clamping blocks, operators do not need to prepare special installation interfaces for each specification of gear or carefully check the installation method to avoid misinstallation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a fixing device for powder metallurgy gears according to this utility model; Figure 2 This is a schematic diagram of the disassembly structure of the clamping block in this utility model; Figure 3 This is a cross-sectional view of the fixing sleeve and the mounting block in this utility model; Figure 4 This is a cross-sectional view of the insertion rod in this utility model; Figure 5 This is a schematic diagram of the mounting block in this utility model.

[0017] In the diagram: 1. Base; 2. Fixing frame; 3. Hydraulic cylinder; 4. Connecting rod; 5. Mounting block; 6. Slot; 7. Insert plate; 8. Clamping block; 9. Inserting rod; 10. Fixing sleeve; 11. Slot; 12. Movable slot; 13. Locking block; 14. Push spring; 15. Abutment block; 16. Limiting block; 17. Limiting slot; 18. Insertion hole; 19. Fixing hole; 20. Unlocking sleeve; 21. Sliding groove; 22. Sliding groove; 23. Sliding sleeve; 24. Sliding rod; 25. Compression spring. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0020] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0021] Please see Figures 1-5 A fixing device for powder metallurgy gears includes a base 1, a fixing frame 2 fixedly mounted on the top surface of the base 1, a hydraulic cylinder 3 fixedly mounted inside the fixing frame 2, a connecting rod 4 rotatably connected to the piston end of the hydraulic cylinder 3, multiple sets of connecting rods 4, each with a mounting block 5 rotatably connected to its bottom end, slots 6 formed on each set of mounting blocks 5, insert plates 7 inserted into the slots 6, clamping blocks 8 fixedly mounted on the outer wall of a rod 9, and a fixing mechanism on each set of mounting blocks 5, the fixing mechanism including a rod 9 and a fixing sleeve 10, the rod 9 being inserted into the mounting block 5 and the insert plate 7, the fixing sleeve 10 being inserted into the bottom end of the rod 9, a slot 11 formed on the outer wall of the rod 9, and a movable groove 12 formed on the inner wall of the fixing sleeve 10, multiple sets of movable grooves 12, each with a sliding clamping block 13 on its inner side.

[0022] Push springs 14 are connected between the outer walls of multiple sets of locking blocks 13 and the movable grooves 12, and abutment blocks 15 are fixedly provided at the top of the insertion rod 9.

[0023] Each of the multiple sets of mounting blocks 5 is fixedly provided with a limiting block 16 at its bottom end. The top surface of the base 1 is provided with a limiting groove 17. The limiting groove 17 is provided in multiple sets and is slidably connected to the multiple sets of limiting blocks 16.

[0024] Each of the multiple mounting blocks 5 has a socket 18, and each of the multiple insert plates 7 has a fixing hole 19. The insert rod 9 is inserted into the socket 18 and the fixing hole 19.

[0025] The outer wall of the card slot 11 is provided with an unlocking sleeve 20, and the outer wall of the insertion rod 9 is provided with a sliding groove 21, in which the unlocking sleeve 20 slides.

[0026] The outer wall of the abutment block 15 is provided with a sliding groove 22. Multiple sets of sliding grooves 22 are provided and a sliding sleeve 23 is slidably connected. A sliding rod 24 is connected between the sliding sleeve 23 and the unlocking sleeve 20. The sliding rod 24 is slidably connected to the insertion rod 9.

[0027] A compression spring 25 is provided between the sliding sleeve 23 and the abutment block 15.

[0028] The inner sides of multiple clamping blocks 8 are provided with grooves that are compatible with gears.

[0029] In this embodiment, during use, the clamping block 8 that adapts to the gear is first installed, the insert plate 7 is inserted into the slot 6, the insert rod 9 is inserted into the insertion hole 18 and the fixing hole 19 and then inserted into the fixing sleeve 10. The bottom end of the insert rod 9 pushes multiple sets of locking blocks 13 to slide into the movable groove 12 and squeezes multiple sets of push springs 14. Then, the multiple sets of push springs 14 reset and push the locking blocks 13 to engage in the slot 11 to complete the engagement of the insert rod 9 and complete the fixing of the clamping block 8. The piston end of the hydraulic cylinder 3 pushes the top end of multiple sets of connecting rods 4 to move, and the bottom end of multiple sets of connecting rods 4 drives the mounting block 5 to slide along the limiting groove 17 through the limiting block 16, thereby driving the clamping block 8 to clamp on the outer wall of the gear.

[0030] More specifically, when it is necessary to disassemble the clamping block 8, push the sliding sleeve 23 to drive the sliding rod 24 to slide and squeeze the compression spring 25. The sliding rod 24 pushes the unlocking sleeve 20 to slide along the sliding groove 21 and pushes multiple sets of clamping blocks 13 to disengage from the slot 11 and slide into the movable groove 12 to make way for the insertion rod 9. Then, pull the insertion rod 9 out of the fixing hole 19 and the insertion hole 18, and then pull the insertion plate 7 out of the slot 6 to complete the disassembly of the clamping block 8.

[0031] In summary, when using or operating the overall equipment: First, install the clamping block 8 that matches the gear. Insert the insert plate 7 into the slot 6. Insert the insert rod 9 into the insertion hole 18 and the fixing hole 19, and then insert it into the fixing sleeve 10. The bottom end of the insert rod 9 pushes multiple sets of locking blocks 13 to slide into the movable groove 12 and squeezes multiple sets of push springs 14. Then, the multiple sets of push springs 14 reset and push the locking blocks 13 to engage in the slot 11 to complete the engagement of the insert rod 9 and fix the clamping block 8. The piston end of the hydraulic cylinder 3 pushes the top end of multiple sets of connecting rods 4 to move. The bottom end of the multiple sets of connecting rods 4 drives the mounting block 5 to slide along the limiting groove 17 through the limiting block 16, thereby causing the clamping block 8 to clamp on the outer wall of the gear.

[0032] When it is necessary to disassemble the clamping block 8, push the sliding sleeve 23 to drive the sliding rod 24 to slide and squeeze the compression spring 25. The sliding rod 24 pushes the unlocking sleeve 20 to slide along the sliding groove 21 and pushes multiple sets of clamping blocks 13 to disengage from the slot 11 and slide into the movable groove 12 to make way for the insertion rod 9. Then, pull the insertion rod 9 out of the fixing hole 19 and the insertion hole 18, and then pull the insertion plate 7 out of the slot 6 to complete the disassembly of the clamping block 8.

[0033] Of all the solutions mentioned above, those involving connections between two components can be selected based on the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other well-known connection methods. These will not be elaborated on here. For all the fixed connections mentioned above, welding is the preferred option. In all the solutions mentioned above, the operation of electrical components, unless otherwise specified, is controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and wiring connections are existing, well-known, and mature technologies, and their specific circuit structures will not be described in detail here. The specific models and specifications of the electrical components involved in this solution need to be selected and determined according to the actual specifications of the device. The specific selection and calculation methods adopt existing technologies in this field, and therefore will not be described in detail. Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies and will not be described in detail in this utility model. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixing device for powder metallurgy gears, comprising a base (1), characterized in that: The base (1) is fixedly provided with a fixed frame (2) on the top surface. A hydraulic cylinder (3) is fixedly provided inside the fixed frame (2). A connecting rod (4) is rotatably connected to the piston end of the hydraulic cylinder (3). The connecting rod (4) is provided with multiple sets, and each of the bottom ends is rotatably connected with an installation block (5). Each of the multiple sets of installation blocks (5) is provided with a slot (6). An insert plate (7) is inserted into the slot (6). A clamping block (8) is fixedly provided on the outer wall of the insert rod (9). Each of the multiple sets of installation blocks (5) is provided with a fixing mechanism. The fixing mechanism includes an insert rod (9) and a fixing sleeve (10). The insert rod (9) is inserted into the installation block (5) and the insert plate (7). The fixing sleeve (10) is inserted into the bottom end of the insert rod (9). A slot (11) is provided on the outer wall of the insert rod (9). A movable groove (12) is provided on the inner wall of the fixing sleeve (10). Multiple sets of movable grooves (12) are provided, and each of the inner sides is slidably provided with a clamping block (13).

2. The fixing device for powder metallurgy gears according to claim 1, characterized in that: multiple sets Push springs (14) are connected between the outer wall of the card block (13) and the movable groove (12), and an abutment block (15) is fixedly provided at the top of the insertion rod (9).

3. The fixing device for powder metallurgy gears according to claim 2, characterized in that: multiple sets Each mounting block (5) is fixedly provided with a limiting block (16) at its bottom end. The top surface of the base (1) is provided with a limiting groove (17). The limiting groove (17) is provided with multiple sets and is slidably connected to multiple sets of limiting blocks (16).

4. The fixing device for powder metallurgy gears according to claim 3, characterized in that: multiple sets Each mounting block (5) has an insertion hole (18), and each set of insertion plates (7) has a fixing hole (19). The insertion rod (9) is inserted into the insertion hole (18) and the fixing hole (19).

5. The fixing device for powder metallurgy gears according to claim 4, characterized in that: The outer wall of the slot (11) is provided with an unlocking sleeve (20), and the outer wall of the insert rod (9) is provided with a sliding groove (21). The unlocking sleeve (20) slides in the sliding groove (21).

6. The fixing device for powder metallurgy gears according to claim 5, characterized in that: The outer wall of the abutment block (15) is provided with a sliding groove (22), the sliding groove (22) is provided with multiple sets and is slidably connected with a sliding sleeve (23), the sliding sleeve (23) is connected to the unlocking sleeve (20) with a sliding rod (24), and the sliding rod (24) is slidably connected to the insertion rod (9).

7. The fixing device for powder metallurgy gears according to claim 6, characterized in that: A compression spring (25) is provided between the sliding sleeve (23) and the abutment block (15).

8. The fixing device for powder metallurgy gears according to claim 7, characterized in that: The inner side of each of the multiple clamping blocks (8) is provided with a groove that is compatible with the gear.

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