A material clamping device for a hot header

Abstract

The utility model relates to a kind of hot upsetting machine material clamping devices, including rack, fixed clamp fixing seat, fixed clamp, movable clamp guide seat and movable clamp are equipped on the rack, movable clamp guide seat is correspondingly set in fixed clamp fixing seat left side, movable clamp guide seat and fixed clamp fixing seat are fixed on the rack, fixed clamp is fixed on fixed clamp fixing seat, sliding mounting seat is slidably arranged on movable clamp guide seat, movable clamp is fixedly installed on sliding mounting seat, clamping drive mechanism for driving sliding mounting seat to be close to and away from fixed clamp is equipped on the rack, a plurality of air blow holes towards fixed clamp are set on movable clamp, air pump is fixedly installed with air blow hole connection on sliding mounting seat, the utility model organically combines cleaning function and clamping action, improves the reliability and stability of clamping, guarantees subsequent cutting processing stability.

Description

Technical Field

[0001] This utility model relates to the field of hot upsetting machine technology, and in particular to a hot upsetting machine clamping device. Background Technology

[0002] A hot upsetting machine is a widely used piece of equipment in the field of metal parts forming and processing. It manufactures workpieces of desired shapes by upsetting and extruding metal bars at high temperatures. During hot upsetting, the metal bar is typically fed into the equipment for cutting, and then processed segment by segment. To ensure processing accuracy and stability, during the feeding stage, the bar must first pass through a clamping device located at the feed inlet. This clamping device reliably holds the bar, fixing its position and providing stable support for subsequent cutting.

[0003] Existing hot upsetting machine clamping devices generally include an openable clamping mechanism, such as a pneumatically or hydraulically driven clamping structure, which can clamp the workpiece after it is in place. However, in actual production, dust or other particulate matter easily adheres to the surface of the workpiece during storage, transportation, and loading. When a workpiece carrying these contaminants enters the clamping device and is clamped, the contaminants remain between the clamping surface and the workpiece surface, resulting in a significant decrease in the effective friction of the clamping contact surface, thus causing clamping slippage. This application addresses the above-mentioned technical problems by making improvements. Utility Model Content

[0004] This invention proposes a clamping device for a hot upsetting machine that provides stable clamping, thus solving the aforementioned problems existing in the prior art.

[0005] The technical solution of this utility model is implemented as follows: A hot forging machine clamping device includes a frame, on which a fixed clamp fixing seat, a fixed clamp, a movable clamp guide seat, and a movable clamp are provided. The movable clamp guide seat is correspondingly arranged on the left side of the fixed clamp fixing seat. Both the movable clamp guide seat and the fixed clamp fixing seat are fixed on the frame. The fixed clamp is fixed on the fixed clamp fixing seat. A sliding mounting seat is slidably arranged on the movable clamp guide seat. The movable clamp is fixedly mounted on the sliding mounting seat. The frame is provided with a clamping drive mechanism for driving the sliding mounting seat to approach and move away from the fixed clamp. The movable clamp has several air blowing holes facing the fixed clamp. An air pump connected to the air blowing holes is fixedly mounted on the sliding mounting seat.

[0006] Preferably, the movable clamp has an internal air passage for connecting to the air blowing hole, and the sliding mounting base has an air inlet passage connecting the air pump and the air passage.

[0007] Preferably, the fixed clamp has a V-shaped groove on the side facing the movable clamp, and the movable clamp has an arc-shaped groove corresponding to the V-shaped groove on the side facing the fixed clamp, with the air blowing hole located in the arc-shaped groove.

[0008] Preferably, the clamping drive mechanism includes a swing arm assembly and a power assembly, wherein the swing arm assembly is connected between the power assembly and the sliding mounting base.

[0009] Preferably, the swing arm assembly includes a drive arm, a first pull rod, a pull rod arm, a second pull rod, and a power connecting arm. One end of the drive arm is hinged to the upper side of the sliding mounting seat, and the other end of the drive arm is hinged to one end of the first pull rod. The other end of the first pull rod is hinged to one end of the pull rod arm. The middle part of the pull rod arm is hinged to the frame on the upper side of the movable clamp guide seat. The other end of the pull rod arm is hinged to one end of the second pull rod, and the other end of the second pull rod is hinged to the power connecting arm. The power connecting arm is rotatably mounted on the frame and is connected to a power assembly.

[0010] Preferably, the power component is a cylinder, the piston rod of the cylinder is hinged to the power connecting arm, and the cylinder body is rotatably connected to the frame.

[0011] Preferably, a proximity sensor is fixedly connected to the frame on the upper side of the movable clamp guide seat, a support arm is fixedly connected to the lower side of the pull rod arm, and a detection block for the proximity sensor to detect the distance is fixedly connected to the support arm.

[0012] In summary, the beneficial effects of this utility model are as follows: 1. This application incorporates several air-blowing holes on the movable fixture facing the fixed fixture, and integrates an air pump on the sliding mounting base. Before the clamping action is performed, the air pump drives high-pressure gas to be ejected through the air-blowing holes, directionally blowing the surface of the workpiece to be clamped. This effectively removes attached dust and particulate matter, preventing contaminants from causing slippage between the clamping surfaces. This structure organically combines cleaning functionality with clamping action, improving the reliability and stability of clamping, ensuring the stability of subsequent cutting processes. Furthermore, its compact structure and rapid response make it suitable for automated continuous production environments.

[0013] 2. A clamping position detection and feedback system is constructed by installing proximity sensors on the frame and placing detection blocks on the support arms of the tie rods. This system can pre-set the clamping endpoint position according to the diameter of the processed rods of different specifications. When the detection block enters the sensing range of the proximity sensor, it is determined that the clamping is in place, and the control system can promptly stop the cylinder operation to prevent over-pressure clamping from causing rod deformation or fixture damage. This design achieves intelligent control of the clamping process, improving the adaptability and safety of the equipment, and is especially suitable for multi-variety, variable-batch production modes. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partially enlarged schematic diagram of the movable clamp part in this utility model.

[0016] In the diagram: 1. Frame; 2. Fixed clamp fixing seat; 3. Fixed clamp; 31. V-groove; 4. Moving clamp guide seat; 5. Moving clamp; 51. Air blowing hole; 52. Connecting air passage; 53. Arc groove; 6. Sliding mounting seat; 61. Air inlet; 7. Air pump; 81. Drive arm; 82. First pull rod; 83. Pull rod arm; 84. Second pull rod; 85. Power connection arm; 86. Cylinder; 87. Support arm; 91. Detection block; 92. Proximity sensor. Detailed Implementation

[0017] The following will refer to the appendix in the embodiments of this utility model. Figure 1-2 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] Example: like Figure 1 and Figure 2 As shown, this utility model discloses a clamping device for a hot upsetting machine, aiming to solve the problem of slippage during clamping of processed bars by dust or particulate foreign matter adhering to the surface of the bars, which affects processing accuracy and equipment operation stability. This clamping device is integrally installed on the hot upsetting machine and serves as a key clamping unit at the feeding end, used to position and clamp the metal bars entering the processing area.

[0019] This application includes a frame 1 installed on a hot forging machine. The frame 1 is provided with a fixed clamp fixing seat 2, a fixed clamp 3, a movable clamp guide seat 4, and a movable clamp 5. The movable clamp guide seat 4 is correspondingly arranged on the left side of the fixed clamp fixing seat 2. Both the movable clamp guide seat 4 and the fixed clamp fixing seat 2 are fixed on the frame 1. The fixed clamp 3 is fixed on the fixed clamp fixing seat 2. A sliding mounting seat 6 is slidably arranged on the movable clamp guide seat 4. The movable clamp 5 is fixedly installed on the sliding mounting seat 6. The frame 1 is provided with a clamping drive mechanism for driving the sliding mounting seat 6 to approach and move away from the fixed clamp 3. In addition, a plurality of air blowing holes 51 facing the fixed clamp 3 are opened on the movable clamp 5. An air pump 7 connected to the air blowing holes 51 is fixedly installed on the sliding mounting seat 6.

[0020] The movable clamp 5 has a connecting air passage 52 for connecting to the air blowing hole 51, and the sliding mounting base 6 has an air inlet 61 connecting the air pump 7 and the connecting air passage 52. Furthermore, the fixed clamp 3 has a V-shaped groove 31 on the side facing the movable clamp 5. This V-shaped groove 31 not only facilitates the centering and positioning of the bar stock, but also adapts to changes in bar stock diameter within a certain range, achieving self-centering clamping. The movable clamp 5 has an arc-shaped groove 53 corresponding to the V-shaped groove 31 on the side facing the fixed clamp 3. When closed, the two form a clamping hole, suitable for clamping most round cross-section metal bars. The air blowing hole 51 is located within the arc-shaped groove 53 to ensure that the airflow can directly act on the surface of the bar.

[0021] Air pump 7 is connected to the control system via a power cord, and its outlet is connected to the inlet duct 61. Before the device is ready to clamp, the control system first starts air pump 7. High-pressure gas enters the blowing hole 51 through the inlet duct 61 and the connecting air duct 52 and is ejected at high speed to blow the side of the processed rod that passes through the feed port and is located in the clamping area facing the arc groove 53. This effectively removes attached dust, debris and other contaminants, ensuring that the clamping surface of the moving clamp 5 and the rod maintain clean contact, thereby significantly improving the clamping friction and preventing slippage. It should also be noted that when the metal rod passes between the fixed clamp 3 and the moving clamp 5, it is in contact with the fixed clamp 3. Therefore, a brush can also be installed on the side of the fixed clamp 3 facing the metal rod's entry direction to brush off any dust, debris and other contaminants that may be present on the side of the metal rod facing the V-groove 31.

[0022] The clamping drive mechanism includes a swing arm assembly and a power assembly. The swing arm assembly is connected between the power assembly and the sliding mounting base 6. The swing arm assembly includes a drive arm 81, a first pull rod 82, a pull rod arm 83, a second pull rod 84, and a power connecting arm 85. One end of the drive arm 81 is hinged to the upper side of the sliding mounting base 6, and the other end of the drive arm 81 is hinged to one end of the first pull rod 82. The other end of the first pull rod 82 is hinged to one end of the pull rod arm 83. The middle part of the pull rod arm 83 is hinged to the frame 1 on the upper side of the movable clamp guide seat 4. The other end of the pull rod arm 83 is hinged to one end of the second pull rod 84, and the other end of the second pull rod 84 is hinged to the power connecting arm 85. The power connecting arm 85 is rotatably mounted on the frame 1 and is connected to the power assembly. The power assembly is a cylinder 86. The piston rod of the cylinder 86 is hinged to the power connecting arm 85, and the cylinder body of the cylinder 86 is rotatably connected to the frame 1. When cylinder 86 actuates, the piston rod extends and retracts, causing the power connecting arm 85 to swing around its axis. This, in turn, drives the tie rod arm 83 to swing via the second tie rod 84. Finally, the first tie rod 82 and the drive arm 81 push the sliding mounting seat 6 to slide along the guide seat, thus achieving the clamping or releasing action of the moving clamp 5. This multi-link structure has the advantages of smooth force transmission, large clamping force, and good self-locking performance, and can adapt to high-intensity hot forging conditions.

[0023] To further enhance the intelligence and safety of the clamping process, a proximity sensor 92 is installed on the frame 1 above the moving fixture guide seat 4. This sensor is an inductive or photoelectric non-contact sensor used to detect the endpoint of the clamping action. An arm 87 is fixedly connected to the lower side of the pull rod arm 83, and a metal detection block 91 is installed at the end of the arm 87. When the clamping action is performed, the pull rod arm 83 swings with the linkage mechanism, causing the detection block 91 to gradually approach the proximity sensor 92. Depending on the diameter of the processed bar, the trigger distance of the proximity sensor 92 can be preset in the control system. Once the detection block 91 enters the sensing range, the sensor sends a signal to the control system, controlling the cylinder 86 to stop supplying air and the piston rod to stop advancing, thereby precisely controlling the clamping stroke of the moving fixture 5 and avoiding bar deformation or fixture wear due to over-clamping. This structure achieves adjustable and controllable clamping force, improving the adaptability and operational safety of the equipment.

[0024] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A clamping device for a hot heading machine, comprising a frame, characterized in that: The frame is provided with a fixed clamp fixing seat, a fixed clamp, a movable clamp guide seat, and a movable clamp. The movable clamp guide seat is correspondingly arranged on the left side of the fixed clamp fixing seat. Both the movable clamp guide seat and the fixed clamp fixing seat are fixed on the frame. The fixed clamp is fixed on the fixed clamp fixing seat. A sliding mounting seat is slidably arranged on the movable clamp guide seat. The movable clamp is fixedly mounted on the sliding mounting seat. The frame is provided with a clamping drive mechanism for driving the sliding mounting seat to approach and move away from the fixed clamp. The movable clamp has several air blowing holes facing the fixed clamp. An air pump connected to the air blowing holes is fixedly mounted on the sliding mounting seat.

2. The hot heading machine clamping device according to claim 1, characterized in that: The movable clamp has an internal air passage for connecting to the air blowing hole, and the sliding mounting base has an air inlet passage connecting the air pump and the air passage.

3. A hot heading machine clamping device according to claim 1 or 2, characterized in that: The fixed clamp has a V-shaped groove on the side facing the movable clamp, and the movable clamp has an arc-shaped groove on the side facing the fixed clamp that corresponds to the V-shaped groove. The air blowing hole is located in the arc-shaped groove.

4. The clamping device for a hot heading machine according to claim 1, characterized in that: The clamping drive mechanism includes a swing arm assembly and a power assembly, wherein the swing arm assembly is connected between the power assembly and the sliding mounting base.

5. A hot heading machine clamping device according to claim 4, characterized in that: The swing arm assembly includes a drive arm, a first pull rod, a pull rod arm, a second pull rod, and a power connecting arm. One end of the drive arm is hinged to the upper side of the sliding mounting seat, and the other end of the drive arm is hinged to one end of the first pull rod. The other end of the first pull rod is hinged to one end of the pull rod arm. The middle part of the pull rod arm is hinged to the frame on the upper side of the movable clamp guide seat. The other end of the pull rod arm is hinged to one end of the second pull rod, and the other end of the second pull rod is hinged to the power connecting arm. The power connecting arm is rotatably mounted on the frame and is connected to a power assembly.

6. A hot heading machine clamping device according to claim 5, characterized in that: The power component is a cylinder, the piston rod of the cylinder is hinged to the power connecting arm, and the cylinder body is rotatably connected to the frame.

7. A hot heading machine clamping device according to claim 5, characterized in that: A proximity sensor is fixedly connected to the frame on the upper side of the movable clamp guide seat, and a support arm is fixedly connected to the lower side of the pull rod arm. A detection block for the proximity sensor to detect distance is fixedly connected to the support arm.

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