Auxiliary clamping assembly for electric upsetting machine and electric upsetting machine

Abstract

This application provides an auxiliary clamping assembly for an electric upsetting machine and an electric upsetting machine, belonging to the field of bar upsetting technology. It includes two movable seats and two clamping members. The two movable seats are horizontally spaced on the electric upsetting machine, and each movable seat is slidably connected to the electric upsetting machine in the horizontal direction. Both movable seats are driven by a linear drive member, which drives the two movable seats to move towards or away from each other. The two clamping members are respectively hinged to the two movable seats, and each clamping member has a first state parallel to the horizontal direction and a second state of upward swing. Each clamping member is driven by a reset member, which drives the clamping member to switch from the second state to the first state. The auxiliary clamping assembly and electric upsetting machine provided by this application fundamentally eliminate the risk of collision between unreset clamping members and the push rod, significantly reducing equipment failure rate and maintenance costs.

Description

Technical Field

[0001] This application belongs to the field of bar stock upsetting technology, and more specifically, relates to an auxiliary clamping assembly for an electric upsetting machine and an electric upsetting machine. Background Technology

[0002] Electric upsetting machines are important forming equipment in the field of metal hot working, mainly used for local upsetting of bar stock. They are widely used in the manufacturing process of key components such as automobile engines and internal combustion engines, and are especially suitable for the precision forming of slender rods such as valve stems. As a core component of the engine's valve train system, the transition area between the valve stem and the valve head needs to be upset to achieve local material accumulation and plastic deformation to meet the requirements of mechanical properties and dimensional accuracy in subsequent processing. Electric upsetting machines, with their efficient and controllable heating and pressurization capabilities, have become key equipment for processing such parts.

[0003] Currently, the upsetting system of an electric upsetting machine typically consists of core components such as an anvil, clamps, auxiliary clamps, and a push rod. The push rod is positioned at the lower end of the bar stock to provide axial support and move the bar stock upwards according to preset upsetting process parameters. The clamps are located below the upsetting area, clamping and positioning the non-upsetting section of the bar stock to ensure the stability of the upsetting portion during heating and pressurization. The auxiliary clamps are positioned at the shank of the bar stock (the end furthest from the upsetting area), applying radial clamping force to restrict lateral displacement, effectively preventing bending deformation due to imbalance between axial and radial forces in the softened state at high temperatures. This avoids quality problems such as eccentricity and dimensional deviations in the upset product.

[0004] The inventors discovered that in the actual operation of existing electric upsetting machines, the reset action of the auxiliary clamp is a crucial link in ensuring the safe operation of the equipment. When the auxiliary clamp fails to reset in time (i.e., fails to withdraw from the clamping position of the bar stock to the safe area) due to mechanical jamming, drive component failure, or control system malfunction, if the push rod continues to move upward according to the preset program, its upper end face will directly and rigidly impact the lower end of the unreset auxiliary clamp. This impact may not only cause structural deformation and wear of the push rod or auxiliary clamp, but may also cause overload damage to the transmission system. In severe cases, it may even affect the overall operating accuracy and service life of the electric upsetting machine, increasing equipment maintenance costs and production downtime. Utility Model Content

[0005] The purpose of this application is to provide an auxiliary clamping assembly for an electric upsetting machine and an electric upsetting machine, so as to solve the technical problem that when the auxiliary clamp fails to reset in time, the push rod will collide with the lower end of the unreset auxiliary clamp.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: An auxiliary clamping assembly for an electric upsetting machine is provided. The electric upsetting machine has a push rod and a clamp for supporting and clamping bar stock, respectively. The auxiliary clamping assembly is disposed between the push rod and the clamp for auxiliary clamping of the bar stock. The auxiliary clamping assembly comprises: Two movable seats are horizontally spaced on the electric upsetting machine, each movable seat being slidably connected to the electric upsetting machine in the horizontal direction; both movable seats are driven by a linear drive component, the linear drive component being used to drive the two movable seats to move towards or away from each other; and Two clamping members are respectively hinged to the two movable seats, and each clamping member has a first state parallel to the horizontal direction and a second state swinging upward; each clamping member is drivenly connected to a reset member, which is used to drive the clamping member to switch from the second state to the first state; When the push rod moves the bar upward, the clamping member is adapted to engage with the push rod, and the clamping member is adapted to switch from the first state to the second state.

[0007] In one possible implementation, the clamping element includes: A swing seat, hinged to the movable seat, wherein the hinge axis of the swing seat is perpendicular to the moving direction of the movable seat; and A roller is rotatably connected to the swing seat, and the rotation axis of the roller is parallel to the hinge axis of the swing seat; When the linear drive member drives the movable seat to move toward the bar, the roller is adapted to engage with the bar.

[0008] In one possible implementation, the outer peripheral wall of the roller has a groove, and when the roller contacts the bar stock, the bar stock is adapted to be embedded in the groove.

[0009] In one possible implementation, the reset component includes: Two fixed posts are respectively installed on the movable seat and the swing seat; and A tension spring, with its two ends connected to the two fixed posts respectively, is in an elastic tension state; When the swing seat switches from the first state to the second state, the tension spring is adapted to extend to generate a force that drives the swing seat to switch from the second state to the first state.

[0010] In one possible implementation, the linear drive component includes: Mounting base, provided on the electric upsetting machine; A cylinder, mounted on the mounting base, has its power output rod connected to the movable base to drive the movable base to move toward or away from the bar stock; and A stroke adjustment mechanism is provided between the mounting base and the movable base, which is used to adjust the maximum distance that the movable base moves toward the bar stock.

[0011] In one possible implementation, the stroke adjustment mechanism includes: A screw is located on the side of the movable seat facing away from the bar stock, with one end fixedly connected to the movable seat, and the axial direction of the screw is parallel to the moving direction of the movable seat; and An adjusting nut is fitted onto the screw rod, the adjusting nut is located on the side of the mounting base opposite to the movable base, and the adjusting nut is threadedly connected to the screw rod; When the cylinder drives the movable seat to move toward the bar stock, the adjusting nut is adapted to engage with the mounting base to prevent the movable seat from moving further; by rotating the adjusting nut, the distance between the adjusting nut and the mounting base can be adjusted to adjust the distance the movable seat moves toward the bar stock.

[0012] In one possible implementation, the mounting base has a guide hole through which the screw passes.

[0013] In one possible implementation, the stroke adjustment mechanism further includes: A fixing component is provided on the screw and is located on the side of the adjusting nut facing away from the mounting base, for fixing the position of the adjusting nut.

[0014] In one possible implementation, the outer peripheral wall of the adjusting nut has a plurality of slots spaced circumferentially, and the fixing member includes: A fixing seat, fixedly sleeved on the screw, and located on the side of the adjusting nut facing away from the mounting seat; and A torsion spring is mounted on the fixed base and has an extension rod thereon; The torsion spring is used to drive the extension rod to swing toward the outer peripheral wall of the adjusting nut. The extension rod is adapted to be embedded in one of the slots to restrict the rotation of the adjusting nut so as to fix the position of the adjusting nut.

[0015] In this embodiment, the auxiliary clamping assembly, through the coordinated action of the moving seat, clamping member, linear drive member, and reset member, achieves auxiliary clamping of the bar stock and safe avoidance during the upward movement of the push rod, as detailed below: A linear drive component drives two moving seats to move towards each other in the horizontal direction, causing two clamping members hinged to the moving seats to move closer together. At this time, the clamping members are in the first state, and the clamping surfaces of the two clamping members together form a radial wrap around the bar section between the top rod and the clamp, applying a stable clamping force. This clamping position is located below the upsetting area and between the support end, which can effectively limit the lateral swing of the bar during the high-temperature upsetting process, prevent bending deformation caused by the slender bar and high-temperature softening, and ensure the coaxiality and dimensional accuracy of the upsetting section.

[0016] When the upsetting process enters the feeding stage, the ejector rod moves the bar stock upward according to a preset program. As the ejector rod rises, its upper end gradually contacts the lower end of the clamping member, which is in the first state. Since the clamping member and the moving seat are hinged, the upward thrust of the ejector rod drives the clamping member to swing upward around the hinge point, switching the clamping member from the first state to the second state. At this time, the swing direction of the clamping member is consistent with the upward direction of the ejector rod, and its lower end avoids the movement path of the ejector rod, ensuring that the ejector rod can continue to move upward without obstruction, completing the axial feed required for upsetting.

[0017] After upsetting, the push rod moves downward to reset, separating from the clamping member, and the upward thrust on the clamping member disappears. At this time, the reset component releases the preload, causing the clamping member to swing downward around the hinge point, returning from the second state to the first state. If it is necessary to change the bar stock or enter the next machining cycle, the linear drive component can drive the two moving seats to move in opposite directions, releasing the clamping of the bar stock. After the new bar stock is positioned, the above steps are repeated for continuous machining.

[0018] Compared with the prior art, the auxiliary clamping assembly for electric upsetting machines provided in this application embodiment has a clamping member linked with the push rod through a hinge structure: when the push rod moves upward, it can directly push the clamping member to swing upward. Even if the reset member cannot actively reset due to a fault, the clamping member can still passively avoid the impact through the push rod's thrust, fundamentally eliminating the risk of the unreset clamping member colliding with the push rod, and significantly reducing the equipment failure rate and maintenance costs.

[0019] The technical solution adopted in this application also provides an electric upsetting machine, including the auxiliary clamping component for the electric upsetting machine proposed in any of the foregoing claims.

[0020] The beneficial effects of the electric upsetting machine provided in this embodiment are the same as those of the aforementioned auxiliary clamping components for electric upsetting machines, and will not be repeated here. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A three-dimensional structural diagram of the auxiliary clamping assembly for an electric upsetting machine provided in the embodiments of this application. Figure 1 ; Figure 2 A three-dimensional structural diagram of the auxiliary clamping assembly for an electric upsetting machine provided in the embodiments of this application. Figure 2 ; Figure 3 A front view of the auxiliary clamping assembly for an electric upsetting machine provided in the embodiments of this application. Figure 1 ; Figure 4 A three-dimensional structural diagram of the auxiliary clamping assembly for an electric upsetting machine provided in the embodiments of this application. Figure 3 ; Figure 5 for Figure 4 Enlarged structural diagram of region A in the middle; Figure 6 A front view of the auxiliary clamping assembly for an electric upsetting machine provided in the embodiments of this application. Figure 2 ; The following are the labeling elements in the figure: 1. Moving seat; 2. Clamping component; 21. Swinging seat; 22. Roller; 221. Groove; 3. Linear drive component; 31. Mounting seat; 311. Guide hole; 32. Cylinder; 4. Reset component; 41. Fixed column; 42. Tension spring; 5. Stroke adjustment mechanism; 51. Screw; 52. Adjusting nut; 521. Slot; 6. Fixing component; 61. Fixed seat; 62. Torsion spring; 621. Extension rod; 7. Electric upsetting machine; 71. Clamp; 72. Push rod; 8. Bar stock. Detailed Implementation

[0023] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0025] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 application 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 limitations on this application.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0027] Please refer to the following: Figures 1 to 6 The auxiliary clamping assembly for an electric upsetting machine and the electric upsetting machine provided in this application will now be described. The auxiliary clamping assembly for the electric upsetting machine includes a push rod 72 and a clamp 71 on the electric upsetting machine 7, which are used to support and clamp the bar stock 8, respectively; the auxiliary clamping assembly is used to be disposed between the push rod 72 and the clamp 71 to assist in clamping the bar stock 8; the auxiliary clamping assembly includes two movable seats 1 and two clamping members 2.

[0028] Two movable seats 1 are arranged horizontally at intervals on the electric upsetting machine 7, and each movable seat 1 is slidably connected to the electric upsetting machine 7 in the horizontal direction; both movable seats 1 are driven by linear drive components 3, which are used to drive the two movable seats 1 to move towards each other or away from each other.

[0029] Two clamping members 2 are respectively hinged to two movable seats 1, and each clamping member 2 has a first state parallel to the horizontal direction and a second state swinging upward; each clamping member 2 is driven to be connected to a reset member 4, which is used to drive the clamping member 2 to switch from the second state to the first state.

[0030] When the push rod 72 drives the bar stock 8 to move upward, the clamping member 2 is adapted to connect with the push rod 72, and the clamping member 2 is adapted to switch from the first state to the second state.

[0031] Two horizontally sliding movable seats 1 are driven by linear drive members 3 to move towards or away from each other, so that the clamping member 2, which is hinged on the movable seats 1, assists in clamping the bar 8 between the push rod 72 and the clamp 71. The clamping member 2 is initially in a first state parallel to the horizontal direction. When the push rod 72 drives the bar 8 to move upward, the clamping member 2 contacts the push rod 72 and swings upward to the second state. After the push rod 72 moves downward, the reset member 4 drives the clamping member 2 to return to the first state.

[0032] The clamping component 2 can be replaced with an arc-shaped clamping block, which fits the bar material 8 through the inner arc surface of the clamping block; the reset component 4 can be a torsion spring 62 (installed at the hinge shaft), which is torn and reset through the torsion spring 62; the linear drive component 3 can be a motor screw mechanism to achieve more precise movement control.

[0033] In this embodiment, the auxiliary clamping assembly, through the coordinated action of the movable seat 1, the clamping member 2, the linear drive member 3, and the reset member 4, achieves auxiliary clamping of the bar stock 8 and safe avoidance of the push rod 72 during upward movement, as detailed below: The linear drive component 3 drives the two moving seats 1 to move towards each other in the horizontal direction, causing the two clamping members 2 hinged to the moving seats 1 to move closer to each other. At this time, the clamping members 2 are in the first state, and the clamping surfaces of the two clamping members 2 together form a radial wrap around the bar segment between the top rod 72 and the clamp 71 of the bar stock 8, applying a stable clamping force. This clamping position is located below the upsetting area and between the support end, which can effectively limit the lateral swing of the bar stock 8 during the high-temperature upsetting process, prevent bending deformation caused by the slender bar and high-temperature softening, and ensure the coaxiality and dimensional accuracy of the upsetting part.

[0034] When the upsetting process enters the feeding stage, the push rod 72 moves the bar stock 8 upward according to a preset program. As the push rod 72 moves upward, its upper end gradually contacts the lower end of the clamping member 2, which is in the first state. Since the clamping member 2 and the moving seat 1 are hinged, the upward thrust of the push rod 72 will drive the clamping member 2 to swing upward around the hinge point, switching the clamping member 2 from the first state to the second state. At this time, the swing direction of the clamping member 2 is consistent with the upward direction of the push rod 72, and its lower end avoids the movement path of the push rod 72, ensuring that the push rod 72 can continue to move upward without obstruction, completing the axial feed required for upsetting.

[0035] After upsetting is completed, the push rod 72 moves downward to reset, separating from the clamping member 2, and the upward pushing force on the clamping member 2 disappears. At this time, the reset member 4 releases the preload, causing the clamping member 2 to swing downward around the hinge point, returning from the second state to the first state. If it is necessary to change the bar stock 8 or enter the next machining cycle, the linear drive member 3 can drive the two moving seats 1 to move in opposite directions, releasing the clamping of the bar stock 8. After the new bar stock 8 is positioned, the above steps are repeated for continuous machining.

[0036] Compared with the prior art, the auxiliary clamping assembly for the electric upsetting machine provided in this application embodiment has a clamping member 2 linked with the push rod 72 through a hinge structure. When the push rod 72 moves upward, it can directly push the clamping member 2 to swing upward. Even if the reset member 4 cannot actively reset due to a fault, the clamping member 2 can still passively avoid the impact through the thrust of the push rod 72, which fundamentally eliminates the risk of the unreset clamping member 2 colliding with the push rod 72 and significantly reduces the equipment failure rate and maintenance cost.

[0037] In some embodiments, the clamping member 2 may be adopted as follows: Figures 1 to 6 The structure shown is described in the following document. Figures 1 to 6 The clamping element 2 includes a swing seat 21 and a roller 22.

[0038] The swing seat 21 is hinged to the movable seat 1, and the hinge axis of the swing seat 21 is perpendicular to the moving direction of the movable seat 1.

[0039] The roller 22 is rotatably connected to the swing seat 21, and the rotation axis of the roller 22 is parallel to the hinge axis of the swing seat 21.

[0040] When the linear drive component 3 drives the movable seat 1 to move toward the bar stock 8, the roller 22 is adapted to engage with the bar stock 8.

[0041] The clamping member 2 consists of a swing seat 21 hinged to the moving seat 1 (the hinge axis is perpendicular to the moving direction of the moving seat 1) and a roller 22 rotatably connected to the swing seat 21 (the rotation axis is parallel to the hinge axis); when the linear drive member 3 drives the moving seat 1 to approach the bar 8, the roller 22 contacts the bar 8 by rotation, reducing friction and achieving flexible clamping.

[0042] Work steps: 1. Movement of movable seat 1: The linear drive component 3 pushes the movable seat 1 toward the bar stock 8; 2. Contact of roller 22: The roller 22 first contacts the outer peripheral wall of the bar stock 8. Since the roller 22 can rotate around its own axis, it rolls when clamping or when the bar stock 8 moves slightly; 3. Auxiliary positioning: The roller 22 continuously contacts the bar stock 8, and auxiliary clamping is achieved through rolling support.

[0043] The roller 22 can be designed as a double-wheel structure (two coaxial rollers 22 are spaced apart) or multiple rollers 22 are spaced apart in the vertical direction to enhance the lateral limiting of the bar stock 8; a bearing can be installed at the hinge of the swing seat 21 and the moving seat 1 to reduce the swing resistance; the surface of the roller 22 can be covered with a rubber layer to increase the friction with the bar stock 8.

[0044] By adopting the above technical solution, the rolling contact of the roller 22 replaces the rigid sliding contact, which significantly reduces the risk of scratches on the surface of the bar stock 8; reduces the frictional resistance during the clamping process, and avoids stress deformation of the bar stock 8 caused by friction; extends the service life of the clamping component 2 and reduces the maintenance frequency.

[0045] In some embodiments, the roller 22 may be as follows: Figures 1 to 6 The structure shown is described in the following document. Figures 1 to 6 The outer peripheral wall of the roller 22 has a groove 221, and when the roller 22 is in contact with the bar 8, the bar 8 is adapted to be embedded in the groove 221.

[0046] The outer peripheral wall of the roller 22 has a groove 221. The shape of the groove 221 matches the outer peripheral wall of the bar 8. When the roller 22 contacts the bar 8, the bar 8 is embedded in the groove 221. The radial displacement of the bar 8 is restricted by the circumferential constraint of the groove 221.

[0047] The cross-section of the groove 221 can be designed as V-shaped (suitable for round bars 8 of multiple diameters), U-shaped (suitable for round bars 8 of a specific diameter), or square (suitable for square bars 8) according to the shape of the bar stock 8; anti-slip textures or elastic pads (such as silicone) can be processed inside the groove 221 to further enhance the anti-slip effect.

[0048] By adopting the above technical solution, the interlocking structure of the groove 221 and the bar stock 8 significantly improves the stability of the auxiliary clamping and effectively prevents the bar stock 8 from radially sliding or shifting during processing. When adapting to bar stock 8 of different diameters, the groove 221 can provide an adaptive positioning effect and improve processing accuracy.

[0049] In some embodiments, the reset member 4 may be adopted as follows: Figure 3 and Figure 6 The structure shown is described in the following document. Figure 3 and Figure 6 The reset component 4 includes two fixing posts 41 and a tension spring 42.

[0050] Two fixed columns 41 are respectively installed on the movable seat 1 and the swing seat 21.

[0051] The tension spring 42 is connected to two fixed posts 41 at both ends and is in an elastic tension state.

[0052] When the swing seat 21 switches from the first state to the second state, the tension spring 42 is adapted to extend to generate a force that drives the swing seat 21 to switch from the second state to the first state.

[0053] Work steps: 1. Initial state: The tension spring 42 is in a slightly stretched state, and the swing seat 21 remains in the first state; 2. Swing extension: When the push rod 72 pushes the swing seat 21 to swing upward, the tension spring 42 is stretched as the swing seat 21 rotates, and the elastic force increases; 3. Reset and retraction: The push rod 72 moves downward and disengages from the swing seat 21, the tension spring 42 releases its elastic force, and pulls the swing seat 21 to rotate downward around the hinge axis, returning to the first state.

[0054] The tension spring 42 can be replaced by a gas spring (damped reset to avoid impact) or a magnet assembly (the movable seat 1 is equipped with a permanent magnet, and the swing seat 21 is equipped with magnets of the same pole, which reset by repulsion) and other reset mechanisms; the position of the fixed column 41 can be adjusted to change the initial tension of the tension spring 42 to adapt to swing seats 21 of different weights.

[0055] By adopting the above technical solution, the structure is simple and low-cost. The tension spring 42 has stable and reliable elasticity, ensuring accurate resetting of the clamping part 2. The elastic tension design can buffer the contact impact between the top rod 72 and the clamping part 2, avoiding rigid collision damage to the components. The resetting response is rapid and does not affect the processing cycle.

[0056] In some embodiments, the linear drive member 3 described above may be as follows: Figures 1 to 6 The structure shown is described in the following document. Figures 1 to 6 The linear drive component 3 includes a mounting base 31 and a cylinder 32.

[0057] Mounting base 31 is mounted on the electric upsetting machine 7, and mounting base 31 is located on the side of the movable base 1 facing away from the bar stock 8.

[0058] The cylinder 32 is mounted on the mounting base 31, and its power output rod is connected to the movable base 1 to drive the movable base 1 to move toward or away from the bar stock 8.

[0059] Among them, a stroke adjustment mechanism 5 is provided between the mounting base 31 and the movable base 1. The stroke adjustment mechanism 5 is used to adjust the maximum distance that the movable base 1 moves toward the bar stock 8.

[0060] The linear drive component 3 consists of a mounting base 31 on the electric upsetting machine 7, a cylinder 32 on the mounting base 31 (the power output rod is connected to the moving base 1), and a stroke adjustment mechanism 5. The cylinder 32 drives the moving base 1 to move toward / away from the bar stock 8, and the stroke adjustment mechanism 5 limits the maximum distance that the moving base 1 can approach the bar stock 8 to adapt to bars stock 8 of different diameters.

[0061] Working steps: 1. Adjust stroke: Based on the diameter of the bar stock 8, the maximum moving distance of the moving seat 1 is preset through the stroke adjustment mechanism 5; 2. Drive movement: The cylinder 32 is vented, the power output rod extends, and the moving seat 1 moves towards the bar stock 8; 3. Limit stop: When the moving seat 1 moves to the preset maximum distance, it is blocked by the stroke adjustment mechanism 5, stops moving, and remains in a clamped state; 4. Reverse reset: After processing is completed, the cylinder 32 is vented, the power output rod retracts, and the moving seat 1 moves away from the bar stock 8.

[0062] Cylinder 32 can be replaced with a hydraulic cylinder (to provide greater clamping force) or a servo electric cylinder (to achieve closed-loop displacement control); the stroke adjustment mechanism 5 can integrate a position sensor (such as a proximity switch) and link with the control system of the electric upsetting machine 7 to achieve automatic stroke adjustment.

[0063] By adopting the above technical solutions, the stroke adjustment mechanism 5 can flexibly adapt to bars 8 of different diameters, improving the equipment's versatility; the cylinder 32 has a fast drive response and stable clamping force, ensuring reliable auxiliary clamping; and it avoids the moving seat 1 from getting too close, causing the bar 8 to be deformed by pressure or clamped too loosely, thus improving processing safety.

[0064] In some embodiments, the stroke adjustment mechanism 5 described above may employ, for example... Figures 2 to 6 The structure shown is described in the following document. Figures 2 to 6 The stroke adjustment mechanism 5 includes a screw 51 and an adjusting nut 52.

[0065] The screw 51 is located on the side of the movable seat 1 facing away from the bar stock 8, with one end fixedly connected to the movable seat 1, and the axial direction of the screw 51 is parallel to the moving direction of the movable seat 1.

[0066] The adjusting nut 52 is fitted onto the screw 51. The adjusting nut 52 is located on the side of the mounting base 31 facing away from the movable base 1, and the adjusting nut 52 is threadedly connected to the screw 51.

[0067] When the cylinder 32 drives the moving seat 1 to move toward the bar stock 8, the adjusting nut 52 is adapted to connect with the mounting base 31 to prevent the moving seat 1 from moving further; by rotating the adjusting nut 52, the distance between the adjusting nut 52 and the mounting base 31 can be adjusted to adjust the distance the moving seat 1 moves toward the bar stock 8.

[0068] Rotating the adjusting nut 52 changes its distance from the mounting base 31. When the cylinder 32 pushes the movable seat 1, the adjusting nut 52 contacts the mounting base 31, thus limiting the movable seat 1 from continuing to move, thereby adjusting the maximum moving distance.

[0069] Working steps: 1. Loosen the adjusting nut 52: Release the fixing of the adjusting nut 52 (e.g., loosen the locking device); 2. Adjust the distance: Rotate the adjusting nut 52 to move it axially along the screw 51, changing the distance between it and the mounting base 31 (the smaller the distance, the smaller the maximum movement distance of the moving base 1); 3. Fix the adjusting nut 52: Fix the position of the adjusting nut 52 after adjustment; 4. Drive limit: The cylinder 32 pushes the moving base 1, and when the adjusting nut 52 contacts the mounting base 31, the moving base 1 stops moving.

[0070] The screw 51 can be engraved with scales, which, together with the indicator lines of the adjusting nut 52, enable visual adjustment; the adjusting nut 52 can be designed as a wing nut for easy manual adjustment; a scale can be set on the mounting base 31 to intuitively display the current maximum movement distance.

[0071] By adopting the above technical solution, the adjustment accuracy is high, and fine adjustment is achieved through the threaded pair, which is suitable for bars with small diameter differences; the structure is compact, no complex control system is required, and the operation is convenient; the mechanical limit is stable and reliable, avoiding stroke changes caused by air pressure fluctuations.

[0072] In some embodiments, the mounting base 31 may be as follows: Figure 2 and Figure 4 The structure shown is described in the following document. Figure 2 and Figure 4 The mounting base 31 has a guide hole 311 through which the screw 51 passes.

[0073] By adopting the above technical solution, the guide hole 311 ensures that the moving seat 1 moves smoothly in the preset direction, avoiding misalignment between the clamping part 2 and the bar stock 8 due to movement deviation; reducing the shaking of the moving seat 1, improving the stability of the auxiliary clamping, and indirectly improving the processing accuracy.

[0074] In some embodiments, the stroke adjustment mechanism 5 described above may employ, for example... Figures 2 to 6 The structure shown is described in the following document. Figures 2 to 6 The stroke adjustment mechanism 5 also includes a fixing component 6.

[0075] The fixing component 6 is mounted on the screw 51 and is located on the side of the adjusting nut 52 facing away from the mounting base 31, and is used to fix the position of the adjusting nut 52.

[0076] The fixing component 6 can be locked with double nuts (the adjusting nut 52 and the locking nut cooperate and lock each other after tightening); or it can be fixed by rotating the eccentric wheel to press the adjusting nut 52; or it can be designed as an elastic buckle that is locked into the annular groove of the screw 51.

[0077] By adopting the above technical solution, the adjusting nut 52 is prevented from loosening due to vibration, ensuring the long-term stability of the stroke adjustment and avoiding fluctuations in clamping force during processing; the fixing operation is simple and requires no additional tools (such as hand-tightening lock nuts), thus improving operating efficiency.

[0078] In some embodiments, the fixing member 6 described above may be as follows: Figures 2 to 6 The structure shown is described in the following document. Figures 2 to 6 The adjusting nut 52 has multiple slots 521 spaced circumferentially on its outer peripheral wall, and the fixing member 6 includes a fixing seat 61 and a torsion spring 62.

[0079] The fixing seat 61 is fixedly sleeved on the screw 51, and it is located on the side of the adjusting nut 52 facing away from the mounting seat 31.

[0080] The torsion spring 62 is mounted on the fixed base 61 and has an extension rod 621 thereon.

[0081] The torsion spring 62 is used to drive the extension rod 621 to swing toward the outer peripheral wall of the adjusting nut 52. The extension rod 621 is adapted to be embedded in one of the slots 521 to limit the rotation of the adjusting nut 52 so as to fix the position of the adjusting nut 52.

[0082] Working steps: 1. Unlock the adjusting nut 52: Manually move the extension rod 621 of the torsion spring 62 to disengage it from the slot 521 of the adjusting nut 52; 2. Rotate the nut: Rotate the adjusting nut 52 to the target position, and the slot 521 will rotate synchronously with the nut; 3. Automatic locking: Release the extension rod 621, and the spring force of the torsion spring 62 will cause it to spring back and engage with the corresponding slot 521, restricting the rotation of the adjusting nut 52.

[0083] By adopting the above technical solution, adjustment and locking can be completed without tools, making the operation convenient and efficient; the torsion spring 62 automatically resets to ensure reliable locking and prevent the adjusting nut 52 from loosening due to vibration; the slot 521 is spaced to achieve gear adjustment and improve adjustment efficiency.

[0084] The technical solution adopted in this application also provides an electric upsetting machine 7, including the auxiliary clamping component for the electric upsetting machine proposed in any of the preceding claims.

[0085] The working steps of the electric upsetting machine 7 are as follows: 1. Clamping the bar stock 8: Clamping clamp 71 holds one end of the bar stock 8, and push rod 72 supports the other end. The auxiliary clamping component is located between the two. 2. Auxiliary clamping: The auxiliary clamping component is activated. The linear drive component 3 drives the moving seat 1 to approach the bar stock 8, and the clamping component 2 assists in clamping. 3. Electric upsetting: The electric upsetting machine 7 heats and upsets the bar stock 8. The push rod 72 moves up and down according to the processing requirements. The clamping component 2 swings and resets adaptively with the movement of the push rod 72. 4. Completion of material removal: After processing is completed, the auxiliary clamping component is released, clamping clamp 71 and push rod 72 are reset, and the processed bar stock 8 is removed.

[0086] The auxiliary clamping component for the electric upsetting machine provided in this application can significantly improve the stability of the electric upsetting machine 7 when processing long bars 8 or small-diameter bars 8, reduce defects such as bending and offset of the bars 8; adapt to bars 8 of different specifications, improve the versatility and applicability of the electric upsetting machine 7; reduce the clamping accuracy requirements of the operator, and improve processing efficiency and product qualification rate.

[0087] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An auxiliary clamping assembly for an electric upset machine, the electric upset machine having a ejector rod and a clamp jaw for supporting and clamping a bar respectively; the auxiliary clamping assembly is arranged between the ejector rod and the clamp jaw to clamp the bar; characterized in that, The auxiliary clamping component includes: Two movable seats are horizontally spaced on the electric upsetting machine, each movable seat being slidably connected to the electric upsetting machine in the horizontal direction; both movable seats are driven by a linear drive component, the linear drive component being used to drive the two movable seats to move towards or away from each other; and Two clamping members are respectively hinged to the two movable seats, and each clamping member has a first state parallel to the horizontal direction and a second state swinging upward; each clamping member is drivenly connected to a reset member, which is used to drive the clamping member to switch from the second state to the first state; When the push rod moves the bar upward, the clamping member is adapted to engage with the push rod, and the clamping member is adapted to switch from the first state to the second state.

2. The auxiliary clamping assembly for an electric mandrel mill as set forth in claim 1, wherein The clamping element includes: A swing seat, hinged to the movable seat, wherein the hinge axis of the swing seat is perpendicular to the moving direction of the movable seat; and A roller is rotatably connected to the swing seat, and the rotation axis of the roller is parallel to the hinge axis of the swing seat; When the linear drive member drives the movable seat to move toward the bar, the roller is adapted to engage with the bar.

3. The auxiliary clamping assembly for an electric mandrel mill as set forth in claim 2, wherein The outer peripheral wall of the roller has a groove, and when the roller is in contact with the bar, the bar is adapted to be embedded in the groove.

4. The auxiliary clamping assembly for an electric mandrel mill as set forth in claim 2, wherein The reset component includes: Two fixed posts are respectively installed on the movable seat and the swing seat; and A tension spring, with its two ends connected to the two fixed posts respectively, is in an elastic tension state; When the swing seat switches from the first state to the second state, the tension spring is adapted to extend to generate a force that drives the swing seat to switch from the second state to the first state.

5. The auxiliary clamping assembly for an electric mandrel mill as set forth in claim 1, wherein The linear drive component includes: Mounting base, provided on the electric upsetting machine; A cylinder, mounted on the mounting base, has its power output rod connected to the movable base to drive the movable base to move toward or away from the bar stock; and A stroke adjustment mechanism is provided between the mounting base and the movable base, which is used to adjust the maximum distance that the movable base moves toward the bar stock.

6. The auxiliary clamping assembly for an electric mandrel mill as set forth in claim 5, wherein The stroke adjustment mechanism includes: A screw is located on the side of the movable seat facing away from the bar stock, with one end fixedly connected to the movable seat, and the axial direction of the screw is parallel to the moving direction of the movable seat; and An adjusting nut is fitted onto the screw rod, the adjusting nut is located on the side of the mounting base opposite to the movable base, and the adjusting nut is threadedly connected to the screw rod; When the cylinder drives the movable seat to move toward the bar stock, the adjusting nut is adapted to engage with the mounting base to prevent the movable seat from moving further; by rotating the adjusting nut, the distance between the adjusting nut and the mounting base can be adjusted to adjust the distance the movable seat moves toward the bar stock.

7. The auxiliary clamping assembly for an electric mandrel mill as set forth in claim 6, wherein The mounting base has a guide hole through which the screw passes.

8. The auxiliary clamping assembly for an electric mandrel mill as set forth in claim 6, wherein The stroke adjustment mechanism also includes: A fixing component is provided on the screw and is located on the side of the adjusting nut facing away from the mounting base, for fixing the position of the adjusting nut.

9. The auxiliary clamping assembly for an electric mandrel mill as set forth in claim 8, wherein The adjusting nut has multiple slots spaced circumferentially on its outer peripheral wall, and the fixing component includes: A fixing seat, fixedly sleeved on the screw, and located on the side of the adjusting nut facing away from the mounting seat; and A torsion spring is mounted on the fixed base and has an extension rod thereon; The torsion spring is used to drive the extension rod to swing toward the outer peripheral wall of the adjusting nut. The extension rod is adapted to be embedded in one of the slots to restrict the rotation of the adjusting nut so as to fix the position of the adjusting nut.

10. A wire-upsetting machine, characterized in that The auxiliary clamping assembly for an electric upsetting machine includes any one of the preceding claims 1-9.

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