Fastening clamp for CNC (computer numerical control) machining of mold frame

Abstract

The utility model discloses a fastening clamp for CNC (computer numerical control) machining of a mold frame, and provides the following scheme that the fastening clamp for CNC machining of the mold frame comprises a rack, a workbench is mounted on the rack, a pressing mechanism is mounted on the rack, and a locking mechanism is mounted at the rear end of the pressing mechanism; the pressing mechanism comprises a transmission block and a supporting frame, a sliding rail is installed below the transmission block, the sliding rail is fixedly connected with the rack, a clamping head is installed on the transmission block, an air pressure shaft is installed at the rear end of the transmission block, a tightening spring is installed on the outer side of the air pressure shaft, a pushing block is installed at the rear end of the air pressure shaft, and the pushing block is fixedly connected with the locking mechanism; a transmission frame is arranged at the central axis of the connecting frame, an abutting block is arranged on a transmission block, and a pressing head is installed at the top end of the connecting frame and used for pressing the mold downwards. The utility model aims to provide the fastening clamp for CNC (computer numerical control) machining of the mold frame, so that the effect of preventing the mold frame from deviating and inclining up and down during machining is achieved.

Description

Technical Field

[0001] The utility model discloses a fastening fixture for CNC processing of a mold frame, and relates to the technical field of CNC processing of the mold frame. Background Art

[0002] The mold frame (or mold frame) is a structural component used to support and fix the mold. The mold frame plays an important role in mold manufacturing and processing. Its main function is to provide a stable platform to accurately align and fix the mold during injection molding, stamping or other molding processes. The design and manufacture of mold frames require a high degree of precision and reliability to ensure the quality of the products produced and the production efficiency.

[0003] When performing CNC processing on a mold frame, the sides of the mold frame are usually pressed and held. However, during processing, the mold frame may tilt up and down, affecting the processing accuracy and processing safety. Therefore, it is necessary to provide a fastening fixture for CNC processing of the mold frame to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a fastening fixture for CNC machining of a mold frame, so as to prevent the mold frame from being tilted up and down during machining.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fastening fixture for CNC machining of a mold frame, comprising a frame, characterized in that: a workbench is installed on the frame for placing a workpiece, a holding mechanism is installed on the frame for holding the mold frame, and a locking mechanism is installed at the rear end of the holding mechanism for providing a transmission force to the holding mechanism; the holding mechanism comprises a transmission block and a support frame, characterized in that: a slide rail is installed under the transmission block, the slide rail is fixedly connected to the frame, a clamping head is installed on the transmission block for clamping the side of the mold frame, and a locking mechanism is installed at the rear end of the transmission block. A pneumatic shaft, a tightening spring is installed on the outside of the pneumatic shaft, a push block is installed on the rear end of the pneumatic shaft, the push block is fixedly connected to the locking mechanism for transmitting the thrust from the locking mechanism, a connecting frame is slidably installed in the support frame, a transmission frame is arranged at the central axis of the connecting frame, a resistance block is arranged on the transmission block, and a pressing head is installed on the top of the connecting frame for pressing the mold downward; the pressing head includes a telescopic shaft for controlling contraction, and is characterized in that: a pressure spring is installed on the outside of the telescopic shaft, a pressing block is installed under the telescopic shaft for pressing the surface of the mold frame, and the pressure spring is fixedly connected to the upper surface of the pressing block.

[0006] Preferably, two groups of pressing mechanisms are provided, the pressing mechanisms are distributed on both sides of the workbench, and two groups of locking mechanisms are provided.

[0007] Preferably, the tension spring is fixedly connected to the push block, and the tension spring is fixedly connected to the transmission block.

[0008] Preferably, two groups of support frames are provided, and the support frames are fixedly connected to the frame.

[0009] Preferably, the transmission frame is in the shape of an inclined "L" shape, the upper end surface of the transmission frame is an inclined surface, and the upper end of the transmission frame is installed at the lower end surface of the abutment block.

[0010] Preferably, a universal spring is provided at the connection between the connecting frame and the supporting frame for returning the connecting frame and increasing stability. A shell is installed on the supporting frame, and the universal spring is installed below the shell.

[0011] Preferably, two groups of pressing heads are provided and distributed on both sides of the connecting frame.

[0012] Compared with the prior art, the beneficial effect of the utility model is that the device provides a thrust to the holding mechanism through the operator controlling the locking mechanism so that the clamping head on the driving block contacts the mold frame and then slides backward along the slide rail, and the contact block pulls the connecting frame downward by moving on the inclined surface on the driving frame, so that the holding head presses the mold frame downward, completing the downward pressing of the mold frame to prevent the mold frame from shifting up and down during processing, and the holding mechanism and the locking mechanism are symmetrically arranged in two groups, which move simultaneously during operation and move simultaneously toward the center of the workbench until the clamping head completes the lateral clamping of the mold frame from both sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an overall schematic diagram of a fastening fixture used for CNC machining of mold frames;

[0014] Figure 2 for Figure 1 A schematic diagram of a holding mechanism of a fastening fixture used for CNC machining of a mold frame;

[0015] Among them, the reference numerals in the figure are:

[0016] 1. Frame; 2. Workbench; 3. Locking mechanism; 31. Push block; 32. Pneumatic shaft; 33. Tension spring; 4. Holding mechanism; 41. Transmission block; 411. Resistance block; 42. Slide rail; 43. Clamping head; 44. Support frame; 441. Housing; 45. Connecting frame; 46. Holding head; 461. Telescopic shaft; 462. Pressing block; 463. Pressure spring; 47. Transmission frame. DETAILED DESCRIPTION

[0017] 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 in 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.

[0018] Specific implementation case:

[0019] As Figure 1 shown, a fastening fixture for CNC machining of a die carrier includes a frame 1, on which a workbench 2 is installed for placing workpieces, and a pressing mechanism 4 is installed on the frame 1 for pressing the die carrier. There are two groups of the pressing mechanisms 4, which are distributed on both sides of the workbench 2. A locking mechanism 3 is installed at the rear end of the pressing mechanism 4 to provide driving force for the pressing mechanism 4, and there are two groups of the locking mechanisms 3;

[0020] When the device is working, the die carrier is placed on the workbench 2, and then the operator controls the locking mechanism 3 to provide a thrust for the pressing mechanism 4, so that the pressing mechanism 4 clamps the die carrier;

[0021] The locking mechanism 3 is a prior art. For details, refer to the arc-shaped contraction pressing mechanism of Chinese Patent No. CN220145339U, which will not be elaborated here;

[0022] As Figure 2 shown, the pressing mechanism 4 includes a transmission block 41 and a support frame 44. A slide rail 42 is installed below the transmission block 41, and the slide rail 42 is fixedly connected to the frame 1. A clamping head 43 is installed on the transmission block 41 for clamping the side of the die carrier. A pneumatic shaft 32 is installed at the rear end of the transmission block 41, a tension spring 33 is installed outside the pneumatic shaft 32, a push block 31 is installed at the rear end of the pneumatic shaft 32, and the push block 31 is fixedly connected to the locking mechanism 3 for transmitting the thrust from the locking mechanism 3. The tension spring 33 is fixedly connected to the push block 31 and the transmission block 41. There are two groups of the support frames 44, and the support frames 44 are fixedly connected to the frame 1. A connecting frame 45 is slidably installed in the support frame 44. A transmission frame 47 is arranged at the central axis of the connecting frame 45. The shape of the transmission frame 47 is an inclined "L" shape. A contact block 411 is arranged on the transmission block 41. The upper end surface of the transmission frame 47 is an inclined surface, and the upper end of the transmission frame 47 is installed at the lower end surface of the contact block 411;

[0023] When the pressing mechanism 4 is working, first, the locking mechanism 3 provides a thrust to push the push block 31 closer to the workbench 2 until the clamping head 43 abuts against the side of the die carrier. The push block 31 continues to advance. Subject to the extrusion force from the die carrier, the clamping head 43 pushes the transmission block 41 to slide backward along the slide rail 42, the pneumatic shaft 32 contracts, the tension spring 33 contracts, and the contact block 411 installed on the transmission block 41 also moves backward. At the same time, the contact block 411 pulls the whole connecting frame 45 to slide downward along the support frame 44 through the inclined surface on the transmission frame 47;

[0024] A universal spring (not marked in the figure) is provided at the connection between the connecting frame 45 and the support frame 44 for the return of the connecting frame 45 and to increase stability. An outer shell 441 is installed on the support frame 44, and the universal spring is installed below the outer shell 441;

[0025] The setting of the universal spring enables the connecting frame 45 to provide a tightening force after sliding downward, making the structure more stable. After the pressing is completed, the universal spring contracts and the connecting frame 45 quickly returns to its original position. At the same time, the outer shell 441 can limit the maximum movement range of the connecting frame 45 during its return;

[0026] A pressing head 46 is installed at the top of the connecting frame 45 for pressing the mold downward. Two groups of the pressing heads 46 are arranged on both sides of the connecting frame 45;

[0027] The pressing head 46 includes a telescopic shaft 461 for controlling contraction. A pressure spring 463 is installed outside the telescopic shaft 461. A pressing block 462 is installed below the telescopic shaft 461 for pressing the surface of the mold base. The pressure spring 463 is fixedly connected to the upper surface of the pressing block 462;

[0028] After the connecting frame 45 moves downward, the pressing head 46 can press the mold base. After the connecting frame 45 continues to move downward, the pressing block 462 touches the upper surface of the mold base, causing the telescopic shaft 461 and the pressure spring 463 to expand and contract to provide an elastic force for pressing the surface of the mold base, so as to clamp the mold base downward;

[0029] In summary, the device enables an operator to control the locking mechanism 3 to provide a thrust for the pressing mechanism 4, so that the clamping head 43 on the driving block 41 touches the mold base and then slides backward along the slide rail 42. The contact block 411 pulls the connecting frame 45 to move downward through the inclined plane movement on the transmission frame 47, so that the pressing head 46 presses the mold base downward, completing the downward pressing of the mold base to prevent the mold base from shifting up and down during processing. Two groups of the pressing mechanism 4 and the locking mechanism 3 are symmetrically arranged and move simultaneously during operation, moving simultaneously towards the center of the workbench 2 until the clamping heads 43 complete the lateral clamping of the mold base from both sides.

[0030] The above are only the preferred embodiments of the present application. The protection scope of the present application is not limited to the above embodiments. All technical solutions falling within this concept belong to the protection scope of the present application. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present application should also be regarded as within the protection scope of the present application.

Claims

1. A fastening fixture for CNC machining of a mold base, comprising a frame (1), characterized in that: A workbench (2) is installed on the frame (1) for placing workpieces, a holding mechanism (4) is installed on the frame (1) for holding the mold frame, and a locking mechanism (3) is installed at the rear end of the holding mechanism (4) for providing transmission force to the holding mechanism (4); The holding mechanism (4) comprises a transmission block (41) and a support frame (44), and is characterized in that: a slide rail (42) is installed below the transmission block (41), and the slide rail (42) is fixedly connected to the frame (1); a clamping head (43) is installed on the transmission block (41) for clamping the side of the mold frame; a pneumatic shaft (32) is installed at the rear end of the transmission block (41), and a tightening spring (33) is installed outside the pneumatic shaft (32); 32) A push block (31) is installed at the rear end, and the push block (31) is fixedly connected to the locking mechanism (3) for transmitting the thrust from the locking mechanism (3); a connecting frame (45) is slidably installed in the support frame (44); a transmission frame (47) is arranged at the central axis of the connecting frame (45); a resistance block (411) is arranged on the transmission block (41); and a pressing head (46) is installed at the top end of the connecting frame (45) for pressing the mold downward; The holding head (46) includes a telescopic shaft (461) for controlling contraction, and is characterized in that a pressure spring (463) is installed on the outside of the telescopic shaft (461), and a pressure block (462) is installed below the telescopic shaft (461) for holding the surface of the mold frame, and the pressure spring (463) is fixedly connected to the upper surface of the pressure block (462).

2. The fastening fixture for CNC machining of a mold base according to claim 1, characterized in that: The pressing mechanism (4) is provided in two groups, and the pressing mechanism (4) is distributed on both sides of the workbench (2). The locking mechanism (3) is provided in two groups.

3. A fastening fixture for CNC machining of a mold base according to claim 1, characterized in that: The tightening spring (33) is fixedly connected to the push block (31), and the tightening spring (33) is fixedly connected to the transmission block (41).

4. A fastening fixture for CNC machining of a mold base according to claim 1, characterized in that: The support frames (44) are provided in two groups, and the support frames (44) are fixedly connected to the frame (1).

5. A fastening fixture for CNC machining of a die set according to claim 1, characterized in that: The transmission frame (47) is in the shape of an inclined "L" shape, the upper end surface of the transmission frame (47) is an inclined surface, and the upper end of the transmission frame (47) is mounted on the lower end surface of the abutment block (411).

6. A fastening fixture for CNC machining of a mold base according to claim 1, characterized in that: A universal spring is provided at the connection between the connecting frame (45) and the supporting frame (44) for returning the connecting frame (45) and increasing stability. A housing (441) is installed on the supporting frame (44), and the universal spring is installed below the housing (441).

7. A fastening fixture for CNC machining of a mold base according to claim 1, characterized in that: The pressing heads (46) are provided in two groups and are distributed on both sides of the connecting frame (45).

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