Automatic die changing device for cold heading machine

Abstract

The utility model relates to cold header die changing technical field and disclose a kind of cold header automatic die changing equipment, including support and support plate, support plate is located in the side of support, screw rod is provided in the support, motor is installed at the top of support, the support arm is sleeved on the screw rod, snap ring is installed at the end of support arm, the upside of support plate is equipped with annular clamping slot, and hydraulic rod is installed in the upside middle part of support plate.The utility model cold header automatic die changing equipment is composed of support, support arm and support plate, when hydraulic rod is contracted, mounting plate is pulled up and moves, V-shaped clamping arm is driven by slider driving connecting piece to be retracted synchronously, the clamping action of mould is formed, the upper end connecting part of V-shaped clamping arm and lower end connecting piece can be adjusted position horizontally, so that the distance between clamping arm adapts to different length or special-shaped mould, and the clamping contact surface is expanded.

Description

Technical Field

[0001] This utility model relates to the field of mold changing technology for cold heading machines, specifically to an automatic mold changing device for cold heading machines. Background Technology

[0002] In the field of cold heading machine processing, automatic mold changing equipment is a key device for improving production efficiency. Its core function is to achieve rapid mold replacement and precise positioning through mechanical structure. Traditional cold heading machine mold changing equipment usually adopts a single clamping arm structure, relying on hydraulic or manual drive to fix and release the mold. Such equipment needs to be adapted to specific mold specifications, and the clamping stability is significantly affected by the mold shape and weight distribution. Especially in high-speed continuous stamping operations, the risk of mold falling off or shifting is high, directly affecting processing accuracy and equipment safety.

[0003] Traditional single-arm clamping structures fix the mold through a single contact point. When dealing with irregularly shaped or offset molds, vibration or inertia can easily cause the clamps to loosen, requiring frequent machine stops for adjustment. Furthermore, the fixed clamping arm spacing cannot accommodate non-standard sized molds, making it difficult to meet the demands of flexible production. Therefore, those skilled in the art have provided an automatic mold-changing device for cold heading machines to solve the problems mentioned in the background section. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an automatic mold changing device for cold heading machines. This device solves the problems of traditional single-arm clamping structures, which fix molds through a single contact point. When faced with irregularly shaped or offset molds, the clamping is prone to loosening due to vibration or inertia, requiring frequent machine stops for adjustment. Furthermore, the fixed clamping arm spacing cannot adapt to non-standard mold sizes, making it difficult to meet the needs of flexible production.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an automatic mold changing device for a cold heading machine, comprising a bracket and a support plate, the support plate being located on one side of the bracket, a screw rod being installed inside the bracket, a motor being installed on the top of the bracket, a support arm being sleeved on the screw rod, a retaining ring being installed at the end of the support arm, an annular groove being formed on the upper side of the support plate, a hydraulic rod being installed in the middle of the upper side of the support plate, limit rods being installed at both ends of the support plate, V-shaped clamping arms being connected to the limit rods, an mounting plate being provided below the support plate, sliding grooves being formed on both sides of the mounting plate, a slider being provided in the sliding groove, and a connecting piece being rotatably connected to one end of the slider.

[0008] Preferably, the motor is connected to the screw drive, and the support arm is threadedly sleeved with the screw, so that the rotation of the screw drives the support arm to automatically lift and lower.

[0009] Preferably, the retaining ring is rotatably engaged with the annular groove above the support plate, thereby facilitating the rotational adjustment of the angle of the support plate.

[0010] Preferably, the hydraulic rod is fixedly installed with the support plate, and the output end of the hydraulic rod passes through the support plate and is connected to the mounting plate.

[0011] Preferably, the upper end of the V-shaped clamping arm is rotatably sleeved with the limiting rod, and the lower end of the V-shaped clamping arm is rotatably connected with the connecting piece. When the hydraulic rod retracts, it drives the mounting plate to rise towards the support plate. When the mounting plate rises, it drives the connecting piece to retract through the slider. The connecting piece then drives the corresponding connected V-shaped clamping arm to retract relatively, thereby clamping the mold that needs to be replaced.

[0012] Preferably, the slider is slidably engaged with the groove, and the upper end of the V-shaped clamping arm and the lower end connected by the connector can be adjusted laterally, so that the position of the V-shaped clamping arm can be adjusted when clamping molds of different lengths or shapes.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides an automatic mold changing device for a cold heading machine, which has the following beneficial effects:

[0015] Through design, the automatic mold changing device for the cold heading machine in this utility model consists of a bracket, a support arm, and a support plate. The bracket has a built-in screw, and a top motor drives the screw to rotate to achieve automatic lifting and lowering of the support arm. The end of the support arm is rotatably connected to the annular groove on the top of the support plate through a snap ring. A limiting rod is set below the support plate, and three pairs of laterally movable V-shaped clamping arms are sleeved on it. The lower end of each pair of clamping arms is rotatably connected to a slider through a connector. The slider is embedded in the sliding grooves on both sides of the mounting plate. A hydraulic rod is installed in the middle of the support plate, and its output end passes through the support plate and is fixedly connected to the mounting plate.

[0016] When the hydraulic rod retracts, the mounting plate is lifted upwards, and the slider-driven connector simultaneously drives the V-shaped clamping arms to retract, forming a clamping action on the mold. The upper and lower connecting parts of the V-shaped clamping arms can be adjusted laterally to adapt the clamping arm spacing to molds of different lengths or irregular shapes, thus expanding the clamping contact surface. Compared to the traditional single-arm structure, this design significantly improves stability through multi-point synchronous clamping, and the independent adjustment mechanism of the three sets of clamping arms can cover a variety of mold specifications. Its applicability extends to the rapid changeover scenarios of non-standard size and irregularly shaped molds, effectively shortening mold changeover time and reducing operational difficulty. Compared to traditional single-arm clamping, it offers higher clamping stability and wider applicability. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an automatic mold changing device for a cold heading machine provided in an embodiment of this application.

[0018] Figure 2 This is a schematic diagram of the annular groove in an automatic mold changing device for a cold heading machine provided in an embodiment of this application.

[0019] Figure 3 This is a structural cross-sectional view of the support plate in an automatic mold changing device for a cold heading machine provided in an embodiment of this application.

[0020] Figure 4 This is a structural cross-sectional view of the mounting plate in an automatic mold changing device for a cold heading machine provided in an embodiment of this application.

[0021] In the diagram: 1. Bracket; 2. Screw; 3. Motor; 4. Support arm; 5. Snap ring; 6. Support plate; 7. Hydraulic rod; 8. Annular groove; 9. Limiting rod; 10. V-shaped clamping arm; 11. Mounting plate; 12. Slide groove; 13. Slider; 14. Connecting piece. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides a technical solution: an automatic mold changing device for a cold heading machine. Please refer to [link / reference needed]. Figure 1 , Figure 2 , Figure 3 , Figure 4 The system includes a bracket 1 and a support plate 6. The support plate 6 is located on one side of the bracket 1. A screw 2 is installed inside the bracket 1. A motor 3 is installed on the top of the bracket 1. A support arm 4 is sleeved on the screw 2. The motor 3 is connected to the screw 2 for driving. The support arm 4 is threadedly sleeved with the screw 2. The rotation of the screw 2 drives the support arm 4 to automatically lift and lower. A retaining ring 5 is installed at the end of the support arm 4. An annular groove 8 is opened on the upper side of the support plate 6. The retaining ring 5 is rotatably engaged with the annular groove 8 on the upper side of the support plate 6, so as to facilitate the rotation adjustment of the angle of the support plate 6. A hydraulic rod 7 is installed in the middle of the upper side of the support plate 6. Limit rods 9 are installed at both ends of the support plate 6. A V-shaped clamping arm 10 is connected to the limit rod 9. An installation plate 11 is provided below the support plate 6. Slide grooves 12 are opened on both sides of the installation plate 11. A slider 13 is installed in the slide groove 12. A connector 14 is rotatably connected to one end of the slider 13.

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4The hydraulic rod 7 is fixedly installed on the support plate 6. The output end of the hydraulic rod 7 passes through the support plate 6 and is connected to the mounting plate 11. The upper end of the V-shaped clamping arm 10 is rotatably sleeved with the limit rod 9, and the lower end of the V-shaped clamping arm 10 is rotatably connected to the connecting piece 14. When the hydraulic rod 7 retracts, it drives the mounting plate 11 to rise towards the support plate 6. When the mounting plate 11 rises, it drives the connecting piece 14 to retract through the slider 13. The connecting piece 14 then drives the corresponding connected V-shaped clamping arm 10 to retract relatively, thereby clamping the mold that needs to be replaced. The slider 13 is slidably engaged with the slide groove 12. The upper end of the V-shaped clamping arm 10 and the lower end connected through the connecting piece 14 can be adjusted laterally, so that the position of the V-shaped clamping arm 10 can be adjusted when clamping molds of different lengths or shapes.

[0025] The automatic mold changing device for the cold heading machine in this utility model consists of a bracket 1, a support arm 4, and a support plate 6. A screw 2 is installed inside the bracket 1, and a motor 3 is installed on the top of the bracket 1. The motor 3 is connected to the screw 2 for driving. The support arm 4 is threadedly connected to the screw 2. The rotation of the screw 2 drives the support arm 4 to automatically lift and lower. A retaining ring 5 is installed at the end of the support arm 4. The retaining ring 5 is rotatably engaged with the annular groove 8 on the top of the support plate 6, thereby facilitating the rotational adjustment of the angle of the support plate 6.

[0026] Limiting rods 9 are installed on the lower sides of both ends of the support plate 6. V-shaped clamping arms 10 are rotatably sleeved on the limiting rods 9. A connecting piece 14 is rotatably connected to the lower end of the V-shaped clamping arms 10. A slider 13 is rotatably connected to the other end of the connecting piece 14. An mounting plate 11 is provided below the support plate 6. A hydraulic rod 7 is installed on the upper side of the middle part of the support plate 6. The output end of the hydraulic rod 7 passes through the support plate 6 and is fixedly connected to the mounting plate 11. Slide grooves 12 are provided on both sides of the mounting plate 11 facing the limiting rods 9. The slider 13 is slidably engaged with the slide grooves 12.

[0027] When the hydraulic rod 7 retracts, it drives the mounting plate 11 to rise towards the support plate 6. When the mounting plate 11 rises, it drives the connecting piece 14 to retract through the slider 13. The connecting piece 14 then drives the corresponding connected V-shaped clamping arm 10 to retract, thereby clamping the mold that needs to be replaced.

[0028] Furthermore, the V-shaped clamping arms 10 are provided in three pairs. The upper end of the V-shaped clamping arms 10 and the lower end connected by the connector 14 can be adjusted laterally, so that the position of the V-shaped clamping arms 10 can be adjusted when clamping molds of different lengths or shapes. This increases the clamping area and improves stability when the V-shaped clamping arms 10 clamp the mold. Compared with traditional single clamping arms, the clamping stability is higher and the applicability is wider.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0030] In this document, unless otherwise expressly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic mold changing device for a cold heading machine, comprising a bracket (1) and a support plate (6), wherein the support plate (6) is located on one side of the bracket (1), characterized in that: The bracket (1) is provided with a screw (2), and a motor (3) is installed on the top of the bracket (1). A support arm (4) is sleeved on the screw (2), and a retaining ring (5) is installed at the end of the support arm (4). An annular groove (8) is opened on the upper side of the support plate (6). A hydraulic rod (7) is installed in the middle of the upper side of the support plate (6). Limit rods (9) are installed at both ends of the support plate (6). A V-shaped clamping arm (10) is connected to the limit rod (9). An installation plate (11) is provided below the support plate (6). Slide grooves (12) are opened on both sides of the installation plate (11). A slider (13) is provided in the slide groove (12). A connector (14) is rotatably connected to one end of the slider (13).

2. The automatic mold changing device for a cold heading machine according to claim 1, characterized in that: The motor (3) is driven by the screw (2), and the support arm (4) is threadedly connected to the screw (2).

3. The automatic mold changing device for a cold heading machine according to claim 1, characterized in that: The retaining ring (5) is rotatably engaged with the annular groove (8) above the support plate (6).

4. The automatic mold changing device for a cold heading machine according to claim 1, characterized in that: The hydraulic rod (7) is fixedly installed on the support plate (6), and the output end of the hydraulic rod (7) passes through the support plate (6) and is connected to the mounting plate (11).

5. The automatic mold changing device for a cold heading machine according to claim 1, characterized in that: The upper end of the V-shaped clamping arm (10) is rotatably sleeved with the limiting rod (9), and the lower end of the V-shaped clamping arm (10) is rotatably connected with the connector (14).

6. The automatic mold changing device for a cold heading machine according to claim 1, characterized in that: The slider (13) is slidably engaged with the groove (12).

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