Adjustable positioning clamp for mold frame machining

Abstract

This application belongs to the field of positioning fixture technology and discloses an adjustable positioning fixture for mold frame processing. It includes a positioning platform with an internally hollow structure. The top of the positioning platform has four sliding grooves communicating with the interior of the platform. The four sliding grooves are arranged in a circular array. Sliding blocks are slidably disposed within each sliding groove. Positioning clamping blocks are fixed to the top of each sliding block. The number of sliding blocks, sliding grooves, and positioning clamping blocks are all equal and their positions correspond one-to-one. A displacement mechanism is provided on the positioning platform to drive the multiple sliding blocks to move closer or further apart. The displacement mechanism includes an adjustment component, a rotation component, and an auxiliary component. The adjustment component includes a connecting plate, an adjustment column, and a turntable. This application, through improvements to the prior art, allows for the clamping or loosening of mold frames of multiple sizes simply by operating the displacement mechanism, making it convenient and easy for operators to use.

Description

Technical Field

[0001] This utility model relates to the field of positioning fixture technology, and in particular to an adjustable positioning fixture for mold frame processing. Background Technology

[0002] A mold frame is a complete mold support structure for producing specific powder products. It is a semi-finished product of the mold and consists of components such as an ejection mechanism, a guiding mechanism, and mold foot pads. As a mold skeleton, it is widely used in the automotive, electronics, medical equipment, and powder metallurgy fields, and can be standardized or customized to meet different precision requirements.

[0003] Chinese utility model patent CN223353556U discloses an adjustable positioning fixture for mold frame processing, including a platform. Two crossbeams are slidably connected to the platform and are arranged parallel to each other. A first bidirectional screw is rotatably connected to the bottom of the platform. Both crossbeams are threaded onto the outer side of the first bidirectional screw. A second bidirectional screw is rotatably connected to the inner wall of a groove in the upper part of the crossbeams. Both the first and second bidirectional screws have two mirror-symmetrical external threads on their outer sides. The two crossbeams are threaded onto the two external threads of the first bidirectional screw. Two upper clamping mechanisms are threaded onto the outer side of the second bidirectional screw and are slidably connected to the inner wall of the groove. A lower abutment plate is provided at the center of the upper part of the platform, and a lifting mechanism that drives the lower abutment plate to rise and fall is provided on the platform. The two upper clamping mechanisms are threaded onto the two external threads of the second bidirectional screw. The first and second bidirectional screws are arranged perpendicular to each other, and a rocker plate is fixedly connected to one end of both the first and second bidirectional screws. The rocker plate is located on the outer side of the platform.

[0004] An existing adjustable positioning fixture for mold frame processing requires the separate operation of two upper clamping mechanisms to adjust the distance between the two crossbeams during use, thereby clamping or releasing the mold frame. This operation is cumbersome and inconvenient. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides an adjustable positioning fixture for mold frame processing.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an adjustable positioning fixture for mold frame processing, comprising a positioning platform with an internal hollow structure, four sliding grooves communicating with the interior of the positioning platform are provided on the top of the positioning platform, the four sliding grooves are distributed in a circular array, a sliding block is slidably disposed in the sliding groove, and a positioning clamping block is fixed on the top of the sliding block, the number of sliding blocks, the number of sliding grooves and the number of positioning clamping blocks are all equal and their positions correspond one-to-one, and a displacement mechanism for driving multiple sliding blocks to move closer or further away from each other is provided on the positioning platform.

[0007] By adopting the above technical solution, the mold frame is first placed on top of the positioning platform, positioned between the four positioning clamps. Then, the displacement mechanism drives the four sliding blocks closer together, which in turn moves the four positioning clamps closer together until the four positioning clamps are in contact with the corresponding surfaces of the mold frame, thus completing the clamping operation. Similarly, the displacement mechanism drives the four sliding blocks further apart, which in turn moves the four positioning clamps further apart, thus completing the release operation of the mold frame. Adjusting the distance between the four positioning clamps allows for clamping mold frames of various diameters. The entire operation is relatively simple and convenient for operators.

[0008] Furthermore, the displacement mechanism includes an adjustment component, which includes a connecting plate connected to the sliding block and located within the positioning platform, an adjustment column disposed on the connecting plate, and a turntable rotatably disposed within the positioning platform. The turntable has an adjustment through hole that slides with the adjustment column. The adjustment through hole is eccentrically disposed with the turntable. The number of adjustment components, the number of adjustment through holes, and the number of sliding blocks are all equal and their positions correspond one-to-one. The displacement mechanism also includes a rotation component for driving the turntable to rotate.

[0009] By adopting the above technical solution, the rotating component first drives the turntable to rotate. Due to the sliding fit between the adjusting through hole and the adjusting column, and the eccentric setting between the adjusting through hole and the turntable, the adjusting column, the connecting plate connected to the adjusting column, and the sliding block connected to the connecting plate all move towards or away from the axis of the turntable, thereby achieving the purpose of clamping or releasing the mold frame by the four positioning clamps.

[0010] Furthermore, the rotating assembly includes a rotating column that penetrates the bottom wall of the positioning platform and is rotatably connected to the positioning platform, a protective shell fixed to the bottom of the positioning platform, a worm gear that penetrates the protective shell and is rotatably connected to the protective shell, and a worm wheel that is fixedly sleeved on the rotating column and meshes with the worm gear. The turntable is fixedly sleeved on the rotating column, and the displacement mechanism also includes auxiliary components for facilitating the rotation of the worm gear.

[0011] By adopting the above technical solution, the worm gear is rotated, which in turn drives the worm wheel meshing with the worm gear, the rotating column fixed to the worm wheel, and the turntable connected to the rotating column to rotate, thereby ensuring the operation of the device to clamp or release the mold frame.

[0012] Furthermore, one end of the worm gear is provided with a insertion groove, and the auxiliary component includes a insertion post that is inserted into the insertion groove, a rotating wheel fixedly sleeved on the insertion post, and a limiting block fixed on the inner wall of the insertion groove. A limiting groove is provided on the side wall of the insertion post, and an annular connecting groove that slides with the limiting block is provided on the side wall of the insertion post. The limiting groove and the annular connecting groove are connected.

[0013] By adopting the above technical solution, the plug-in pin is manually pulled away from the plug-in slot until the limiting block engages with the limiting slot. At this point, the rotating wheel can be rotated to drive the plug-in pin to rotate. Due to the limiting effect of the limiting slot on the limiting block, the limiting block drives the worm gear to rotate, thus ensuring the normal rotation operation of the turntable. After use, the plug-in pin is pushed closer to the plug-in slot until the limiting block is located in the annular connecting groove. At this point, rotating the rotating wheel cannot drive the worm gear to rotate, thereby reducing the probability of the turntable rotating due to accidental contact with the rotating wheel when it is not needed.

[0014] Furthermore, an adjusting rod is rotatably mounted on the sliding block. The sliding block passes through the corresponding connecting plate and slides in cooperation with it. An adjusting groove is opened on the inner wall on both sides of each sliding groove to slide in cooperation with the corresponding adjusting rod. The adjusting groove consists of an inclined section and a horizontal section. The distance between the inclined section of the adjusting groove and the bottom wall of the positioning platform gradually decreases from the turntable to the adjusting column. A placement groove is opened on the top of the positioning platform. The four positioning clamps are all located in the placement groove. The tops of the four positioning clamps are all flush with the top of the positioning platform.

[0015] By adopting the above technical solution, during the process of the positioning clamping block moving towards the axis of the turntable and clamping the mold frame, the sliding block connected to the positioning clamping block and the adjusting rod connected to the sliding block are driven to move. The adjusting rod first moves from the inclined section of the adjusting groove to the horizontal section of the adjusting groove, and then slides in the horizontal section of the adjusting groove. Since the distance between the inclined section of the adjusting groove and the bottom wall of the positioning table gradually decreases from the turntable to the adjusting column, during this process, the adjusting rod, the sliding block connected to the adjusting rod, and the positioning clamping block connected to the sliding block gradually rise and move horizontally. Finally, the adjusting rod, the sliding block connected to the adjusting rod, and the positioning clamping block connected to the sliding block maintain horizontal movement until the positioning clamping block clamps the mold frame. Similarly, as the positioning clamp moves away from the turntable axis and releases the mold frame, the adjusting rod first slides from the horizontal section of the adjusting groove to the inclined section of the adjusting groove, and then slides along the inclined section of the adjusting groove. During this process, the sliding block connected to the adjusting rod and the positioning clamp connected to the sliding block first maintain horizontal movement, and finally the sliding block connected to the adjusting rod and the positioning clamp connected to the sliding block gradually descend and move horizontally until the bottom of the positioning clamp is in contact with the bottom of the placement groove. Since the top of the positioning clamp is flush with the top of the positioning platform at this time, it is convenient to move the mold frame off the positioning platform or move other mold frames to the top of the positioning platform.

[0016] Furthermore, a limiting rod is fixed inside the positioning platform, and the limiting rod passes through the connecting plate and slides with the connecting plate.

[0017] By adopting the above technical solution, the limiting rod effectively limits movement, thus improving the stability of the connecting plate during sliding.

[0018] Furthermore, a wavy groove is provided on the side wall of the positioning clamp block near the axis of rotation column.

[0019] By adopting the above technical solution, the wavy groove design improves the friction when the positioning clamping block is in contact with the mold frame surface.

[0020] Furthermore, the adjusting column passes through the connecting plate and is rotatably connected to the connecting plate.

[0021] By adopting the above technical solution, the rotation setting between the adjusting column and the connecting plate reduces the friction between the adjusting column and the turntable when the adjusting column moves.

[0022] In summary, the present invention has the following beneficial effects: In this application, by improving the prior art, the displacement mechanism can realize the clamping or loosening of mold frames of multiple sizes, which is more convenient to use and easier for staff to operate. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a cross-sectional schematic diagram of an embodiment of the present invention to highlight the internal structure of the positioning platform; Figure 3 This is a cross-sectional schematic diagram of an embodiment of the present invention to highlight the connection structure between the adjusting rod and the positioning platform; Figure 4 This is a cross-sectional schematic diagram of an embodiment of the present invention used to highlight the connection structure between the plug and the worm gear.

[0024] In the diagram: 1. Positioning platform; 2. Sliding groove; 3. Sliding block; 4. Positioning clamp; 5. Displacement mechanism; 51. Adjustment assembly; 511. Connecting plate; 512. Adjustment column; 513. Turntable; 514. Adjustment through hole; 52. Rotation assembly; 521. Rotation column; 522. Protective shell; 523. Worm gear; 524. Worm wheel; 53. Auxiliary assembly; 531. Insertion column; 532. Rotary wheel; 533. Limiting block; 6. Insertion groove; 7. Limiting groove; 8. Annular connecting groove; 9. Adjustment rod; 10. Adjustment groove; 11. Placement groove; 12. Limiting rod. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] like Figure 1-4 As shown in the illustration, this application discloses an adjustable positioning fixture for mold frame processing, including a positioning platform 1, sliding blocks 3, positioning clamping blocks 4, and a displacement mechanism 5. The positioning platform 1 has a hollow internal structure. Four sliding grooves 2 communicating with the interior of the positioning platform 1 are provided on the top of the positioning platform 1. The four sliding grooves 2 are arranged in a circular array. The number of sliding blocks 3, the number of sliding grooves 2, and the number of positioning clamping blocks 4 are all equal and their positions correspond one-to-one. The sliding blocks 3 are slidably disposed within their corresponding sliding grooves 2, and the positioning clamping blocks 4 are fixed to the top of their corresponding sliding blocks 3. First, the mold frame is placed on the top of the positioning platform 1, positioned between the four positioning clamping blocks 4. Then, the displacement mechanism 5 drives the four sliding blocks 3 to move closer together, thereby driving the four positioning clamping blocks 4 to move closer together until the four positioning clamping blocks 4 are in contact with the corresponding surfaces of the mold frame, thus completing the clamping operation of the mold frame. Similarly, the displacement mechanism 5 drives the four sliding blocks 3 to move away from each other, thereby driving the four positioning clamping blocks 4 to move away from each other, thus completing the release operation of the mold frame. By adjusting the distance between the four positioning clamping blocks 4, it is possible to clamp mold frames of various diameters. The whole operation is relatively simple and convenient for operators to use.

[0027] A displacement mechanism 5 is mounted on the positioning platform 1. The displacement mechanism 5 drives multiple sliding blocks 3 to move closer to or further apart from each other. The displacement mechanism 5 includes an adjustment component 51, a rotation component 52, and an auxiliary component 53. The adjustment component 51 includes a connecting plate 511, an adjustment column 512, and a turntable 513. The connecting plate 511 is connected to the sliding blocks 3 and located within the positioning platform 1. The adjustment column 512 is mounted on the connecting plate 511, and the turntable 513 is rotatably mounted inside the positioning platform 1. An adjustment through hole 514 is provided through the turntable 513, which slides in cooperation with the adjustment column 512. The adjustment through hole 514 and the turntable 513 are eccentrically positioned. The number of adjustment components 51, the number of adjustment through holes 514, and the number of sliding blocks 3 are all equal and their positions correspond one-to-one. First, the rotating assembly 52 drives the turntable 513 to rotate. Since the adjusting through hole 514 and the adjusting column 512 are in sliding fit, and the adjusting through hole 514 and the turntable 513 are eccentrically set, the adjusting column 512, the connecting plate 511 connected to the adjusting column 512 and the sliding block 3 connected to the connecting plate 511 all move toward the axis of the turntable 513 or away from it, thereby achieving the purpose of the four positioning clamps 4 clamping or releasing the mold frame.

[0028] The rotating assembly 52 drives the turntable 513 to rotate. The rotating assembly 52 includes a rotating column 521, a protective shell 522, a worm gear 523, and a worm wheel 524. The rotating column 521 is inserted through the bottom wall of the positioning platform 1 and rotatably connected to the positioning platform 1. The turntable 513 is fixedly sleeved on the rotating column 521, and the protective shell 522 is fixed to the bottom of the positioning platform 1. The worm gear 523 is inserted through the protective shell 522 and rotatably connected to it. One end of the worm gear 523 has an insertion groove 6. The worm wheel 524 is fixedly sleeved on the rotating column 521 and meshes with the worm gear 523. Rotating the worm gear 523 causes the worm wheel 524 meshing with the worm gear 523, the rotating column 521 fixed to the worm wheel 524, and the turntable 513 connected to the rotating column 521 to all rotate, thereby ensuring the device can clamp or release the mold frame.

[0029] Auxiliary component 53 facilitates the rotation of worm gear 523. Auxiliary component 53 includes a plug-in post 531, a rotating wheel 532, and a limiting block 533. The plug-in post 531 is plugged into the plug-in slot 6. A limiting groove 7 is formed on the side wall of the plug-in post 531, and an annular connecting groove 8 is formed on the side wall of the plug-in post 531, which slides with the limiting block 533. The limiting groove 7 communicates with the annular connecting groove 8. The rotating wheel 532 is fixedly sleeved on the plug-in post 531, and the limiting block 533 is fixed to the inner wall of the plug-in slot 6. The plug-in post 531 is manually pulled away from the plug-in slot 6 until the limiting block 533 engages with the limiting groove 7. At this point, the rotating wheel 532 can be rotated to drive the plug-in post 531 to rotate. Due to the limiting effect of the limiting groove 7 on the limiting block 533, the limiting block 533 drives the worm gear 523 to rotate, thus ensuring the normal rotation operation of the turntable 513. After use, push the plug 531 toward the direction of the plug slot 6 until the limit block 533 is in the annular connecting groove 8. At this time, the rotating wheel 532 can no longer drive the worm gear 523 to rotate, thereby reducing the probability that the turntable 513 will rotate due to accidental contact with the rotating wheel 532 when there is no need to rotate the turntable 513.

[0030] An adjusting rod 9 is rotatably mounted on the sliding block 3, and the sliding block 3 passes through the corresponding connecting plate 511 and slides in engagement. Each sliding groove 2 has an adjusting groove 10 on its inner walls on both sides, which slides in engagement with the corresponding adjusting rod 9. The adjusting groove 10 consists of an inclined section and a horizontal section. The distance between the inclined section of the adjusting groove 10 and the inner bottom wall of the positioning platform 1 gradually decreases from the turntable 513 to the adjusting column 512. A placement groove 11 is provided on the top of the positioning platform 1. Four positioning clamps 4 are all located within the placement groove 11, and the tops of the four positioning clamps 4 are flush with the top of the positioning platform 1. During the process of the positioning clamping block 4 moving towards the axis of the turntable 513 and clamping the mold frame, the sliding block 3 connected to the positioning clamping block 4 and the adjusting rod 9 connected to the sliding block 3 are driven to move. The adjusting rod 9 first moves from the inclined section of the adjusting groove 10 to the horizontal section of the adjusting groove 10, and then slides in the horizontal section of the adjusting groove 10. Since the distance between the inclined section of the adjusting groove 10 and the inner bottom wall of the positioning table 1 gradually decreases from the turntable 513 to the adjusting column 512, during this process, the adjusting rod 9, the sliding block 3 connected to the adjusting rod 9 and the positioning clamping block 4 connected to the sliding block 3 gradually rise and move horizontally. Finally, the adjusting rod 9, the sliding block 3 connected to the adjusting rod 9 and the positioning clamping block 4 connected to the sliding block 3 maintain horizontal movement until the positioning clamping block 4 clamps the mold frame. Similarly, as the positioning clamping block 4 moves away from the axis of the turntable 513 and releases the mold frame, the adjusting rod 9 first slides from the horizontal section of the adjusting groove 10 to the inclined section of the adjusting groove 10, and then slides along the inclined section of the adjusting groove 10. During this process, the sliding block 3 connected to the adjusting rod 9 and the positioning clamping block 4 connected to the sliding block 3 first maintain horizontal movement. Finally, the sliding block 3 connected to the adjusting rod 9 and the positioning clamping block 4 connected to the sliding block 3 gradually descend and move horizontally until the bottom of the positioning clamping block 4 is in contact with the bottom of the placement groove 11. Since the top of the positioning clamping block 4 is flush with the top of the positioning platform 1 at this time, it is convenient for the mold frame to be moved off the positioning platform 1 or for other mold frames to be moved to the top of the positioning platform 1.

[0031] A limiting rod 12 is fixed inside the positioning platform 1. The limiting rod 12 passes through the connecting plate 511 and slides with the connecting plate 511. The limiting rod 12 has a good limiting effect, which improves the stability of the connecting plate 511 when sliding.

[0032] The positioning clamp 4 has a wavy groove on the side wall near the axis of the rotating column 521. The wavy groove increases the friction between the positioning clamp 4 and the mold frame surface.

[0033] The adjusting column 512 passes through the connecting plate 511 and is rotatably connected to the connecting plate 511. The rotatable arrangement between the adjusting column 512 and the connecting plate 511 reduces the friction between the adjusting column 512 and the turntable 513 when the adjusting column 512 moves.

[0034] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An adjustable positioning fixture for mould frame machining, comprising a positioning table (1) in the form of an internal hollow structure, characterised in that: The top of the positioning platform (1) is provided with four sliding grooves (2) that communicate with the interior of the positioning platform (1). The four sliding grooves (2) are arranged in a circular array. Sliding blocks (3) are slidably arranged in the sliding grooves (2). A positioning clamp (4) is fixed on the top of the sliding block (3). The number of sliding blocks (3), the number of sliding grooves (2), and the number of positioning clamps (4) are all equal and their positions correspond one-to-one. The positioning platform (1) is provided with a displacement mechanism (5) for driving multiple sliding blocks (3) to move closer or further away from each other.

2. The adjustable positioning fixture for moulding frame machining according to claim 1, characterized in that: The displacement mechanism (5) includes an adjustment component (51), which includes a connecting plate (511) connected to the sliding block (3) and located in the positioning platform (1), an adjustment column (512) set on the connecting plate (511), and a turntable (513) rotatably set inside the positioning platform (1). The turntable (513) is provided with an adjustment through hole (514) that slides with the adjustment column (512). The adjustment through hole (514) is eccentrically set with the turntable (513). The number of adjustment components (51), the number of adjustment through holes (514), and the number of sliding blocks (3) are all equal and their positions correspond one-to-one. The displacement mechanism (5) also includes a rotation component (52) for driving the turntable (513) to rotate.

3. An adjustable positioning fixture for die frame machining according to claim 2, characterized in that: The rotating assembly (52) includes a rotating column (521) that passes through the bottom wall of the positioning platform (1) and is rotatably connected to the positioning platform (1), a protective shell (522) fixed to the bottom of the positioning platform (1), a worm (523) that passes through the protective shell (522) and is rotatably connected to the protective shell (522), and a worm wheel (524) that is fixedly sleeved on the rotating column (521) and meshes with the worm (523). The turntable (513) is fixedly sleeved on the rotating column (521). The displacement mechanism (5) also includes an auxiliary assembly (53) for facilitating the rotation of the worm (523).

4. An adjustable positioning fixture for mold frame processing according to claim 3, characterized in that: One end of the worm gear (523) is provided with a plug groove (6). The auxiliary component (53) includes a plug post (531) that is plugged into the plug groove (6), a rotating wheel (532) fixedly sleeved on the plug post (531), and a limiting block (533) fixed on the inner wall of the plug groove (6). A limiting groove (7) is provided on the side wall of the plug post (531). An annular connecting groove (8) is provided on the side wall of the plug post (531) that slides with the limiting block (533). The limiting groove (7) and the annular connecting groove (8) are connected.

5. An adjustable positioning fixture for mold frame processing according to claim 2, characterized in that: An adjusting rod (9) is rotatably mounted on the sliding block (3). The sliding block (3) passes through the corresponding connecting plate (511) and slides in cooperation. An adjusting groove (10) is opened on the inner wall on both sides of each sliding groove (2) to slide in cooperation with the corresponding adjusting rod (9). The adjusting groove (10) is composed of an inclined section and a horizontal section. The distance between the inclined section of the adjusting groove (10) and the bottom wall of the positioning platform (1) gradually decreases from the turntable (513) to the adjusting column (512). A placement groove (11) is opened on the top of the positioning platform (1). The four positioning clamps (4) are all located in the placement groove (11). The tops of the four positioning clamps (4) are all flush with the top of the positioning platform (1).

6. An adjustable positioning fixture for mold frame processing according to claim 2, characterized in that: The positioning platform (1) is fixed with a limiting rod (12), which passes through the connecting plate (511) and slides with the connecting plate (511).

7. An adjustable positioning fixture for mold base processing according to claim 1, characterized in that: The positioning clamp (4) has a wavy groove on the side wall near the axis of the rotating column (521).

8. An adjustable positioning fixture for mold base processing according to claim 2, characterized in that: The adjusting column (512) passes through the connecting plate (511) and is rotatably connected to the connecting plate (511).

Images