A tooling for changing straightening molds

Abstract

This straightening mold replacement fixture relates to the field of mold assembly and disassembly fixture technology. It includes a mold installation platform and a mold replacement assembly. The mold installation platform has a T-shaped through slot. The two lead screws of the mold replacement assembly achieve synchronous transmission through sprockets and chains. Anchor-type hooks are connected to the straightening mold via detachable lifting rings and plug-in columns. Linear slide rails ensure smooth extension and retraction. The positioning plate on the bracket connects to the T-shaped through slot. A brake lock and positioning pin achieve dual positioning. This utility model can be operated by a single person using a handwheel, achieving synchronous and stable traction, rapid and accurate positioning, and safe assembly and disassembly of the straightening mold. It solves the problems of poor positioning, low efficiency, high labor intensity, and high safety hazards associated with traditional methods. It features a simple structure, stable operation, strong versatility, and efficient assembly and disassembly, and is suitable for mold replacement operations in various metal profile and bar straightening equipment.

Description

Technical Field

[0001] This utility model relates to the field of mold assembly and disassembly tooling technology, and in particular to a tooling for replacing a straightening mold. Background Technology

[0002] Straightening dies are frequently replaced components in metal profile and bar processing production lines, requiring frequent replacement based on processing specifications and wear levels. Traditional straightening die replacement methods often rely on manual handling, simple lifting tools, or unguided push-pull techniques, which have numerous drawbacks in actual operation. Without a dedicated guiding structure, the straightening mold is prone to bumps and scratches during disassembly and assembly, damaging the mating surfaces between the straightening mold and the equipment. Without a synchronous drive mechanism, the forces on both sides are uneven, making it easy to get stuck during disassembly and assembly. This results in low work efficiency, high labor intensity for workers, and the lack of reliable locking and anti-reverse devices. There is also a risk of the straightening mold slipping or tipping over during handling and disassembly, posing significant safety hazards.

[0003] Therefore, it is essential to provide a straightening mold replacement tooling to address the shortcomings of existing technologies. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a straightening mold replacement fixture. This fixture has smoother synchronous transmission, more accurate guiding and positioning, more reliable operation safety, higher disassembly and assembly efficiency, stronger versatility, and a wider range of applications.

[0005] The above-mentioned objectives of this utility model are achieved through the following technical means.

[0006] A straightening mold replacement fixture is provided, including a mold mounting platform, on which a straightening mold body is mounted, and a mold replacement component is provided on one side of the straightening mold body.

[0007] The mold changing assembly includes a bracket, with linear slide rails installed on both sides of the top of the bracket. A lead screw seat is slidably installed on each linear slide rail, and a lead screw is installed in each lead screw seat. The two lead screws are movably installed on both sides of the bracket via bearings. A sprocket is fixedly installed on the same side end of the two lead screws, and a chain is meshed on the outer side of the two sprockets to achieve synchronous rotation of the two lead screws.

[0008] One of the lead screws has a handwheel fixedly installed at its extended end, which drives the entire transmission mechanism. A vertical support plate is installed above each lead screw nut, and a horizontal support plate is installed on the top of the vertical support plate. An anchor-type hook is installed at the outer end of the horizontal support plate, and a detachable lifting ring is hung on the anchor-type hook. A plug-in post is fixedly installed on the detachable lifting ring. The plug-in post is inserted into the circular positioning holes reserved on both sides of the straightening mold body to achieve a stable connection between the tooling and the straightening mold.

[0009] The detachable lifting ring features a split-locking design. During operation, the detachable lifting ring can be disassembled and fitted onto the outside of the anchor-type hook. Then, the detachable lifting ring can be locked and fixed to achieve a reliable connection. After the mold disassembly is completed, the locking state can be released to disassemble and remove the detachable lifting ring. The operation is simple and the disassembly and assembly efficiency is high.

[0010] The support frame has horizontally arranged roller conveyor belts to support and smoothly transport the straightening mold. Universal casters are installed at the four corners of the bottom of the support frame to facilitate the overall movement of the tooling. Movable positioning pins are provided on both sides of the bottom of the support frame. The positioning pins can be inserted into preset holes in the ground to fix the tooling during operation.

[0011] The upper surface of the mold mounting platform has two T-shaped through slots. Two positioning plates are installed on the bracket corresponding to the T-shaped through slots. The positioning plates are inserted into the T-shaped through slots to achieve precise docking between the tooling and the mold mounting platform, ensuring that the straightening mold disassembly process is accurate and reliable.

[0012] The straightening mold body slides and engages on the mold mounting platform, and the straightening mold body is fixedly mounted on the upper surface of the mold mounting platform by threaded fasteners.

[0013] The idler conveyor belt consists of two sets of rollers symmetrically arranged on the horizontal center line of the support. The rollers of the roller sets are made of stainless steel with rubber sleeves on the outside. The surface is smooth and wear-resistant, reducing friction and scratches during the conveying of the straightening mold.

[0014] Each swivel caster is equipped with a brake lock, allowing for flexible steering during movement and locking for secure fixation during operation, thus improving the stability of the tooling.

[0015] This invention employs a double lead screw combined with a sprocket and chain structure to achieve synchronous movement of the anchor-type hooks on both sides to the detachable lifting ring position and complete the engagement. The straightening mold is subjected to uniform force, without jamming or skewing. The linear slide rail ensures the straightness of the extension and retraction. The T-shaped through groove combined with the positioning plate achieves precise docking with the platform with minimal positioning error. The brake locking device and positioning pin provide double locking. The anchor-type hooks, detachable lifting rings, and insertion columns form a triple connection, reducing the risk of the straightening mold slipping. The handwheel drive and roller support allow for operation by a single person, significantly improving efficiency compared to traditional methods. Attached Figure Description

[0016] The present invention will be further described with reference to the accompanying drawings, but the content of the drawings does not constitute any limitation on the present invention.

[0017] Figure 1 This is a schematic diagram of the overall structure of a straightening mold replacement fixture according to the present invention.

[0018] Figure 2 This is a three-dimensional structural view of a mold changing component of a straightening mold changing fixture according to this utility model.

[0019] Figure 3 This is a top view of a mold changing component of a straightening mold changing fixture according to this utility model.

[0020] Figure 4 This is a side view of a mold changing component of a straightening mold changing fixture according to this utility model.

[0021] from Figures 1 to 4 Including: 1. Mold installation platform; 2. Straightening mold body; 3. Mold replacement components; 4. Bracket; 5. Linear guide rail; 6. Wire female seat; 7. Lead screw; 8. Sprockets; 9. Chain; 10. Handwheel; 11. Vertical support plate; 12. Anchor-type hook; 13. Detachable lifting rings; 14. Insertion pin; 15. Idler roller conveyor belt; 16. Swivel casters; 17. Positioning pin; 18. T-slot; 19. Positioning plate; 20. Roller assembly; 21. Brake locking device; 22. Horizontal support plate. Detailed Implementation

[0022] The present invention will be further described in conjunction with the following embodiments.

[0023] Example 1.

[0024] like Figure 1-4 As shown, this embodiment provides a straightening mold replacement fixture, which consists of three main parts: a mold installation platform 1, a straightening mold body 2, and a mold replacement component 3. The straightening mold body 2 is slidably installed on the upper surface of the mold installation platform 1 and is locked and fixed by multiple sets of bolts, nuts and other threaded fasteners. The mold replacement component 3 is arranged on the outside of the straightening mold body 2 and serves as a special auxiliary mechanism for mold disassembly, assembly and transportation.

[0025] The main body of the mold changing component 3 is the bracket 4. The bracket adopts a frame-type welded structure with high structural strength and strong load-bearing capacity. Two sets of linear slide rails 5 are symmetrically fixed on the left and right sides of the top of the bracket 4 by bolts. The linear slide rails 5 are arranged horizontally along the mold assembly and disassembly direction. Each set of linear slide rails 5 is slidably mounted with a screw nut 6. The screw nut 6 can make linear reciprocating motion along the linear slide rail 5. Two lead screws 7 are rotatably mounted on the left and right side walls of the bracket 4 through bearing seats. The lead screws 7 and the corresponding side screw nuts 6 form a threaded transmission pair. When the lead screws rotate, they can drive the screw nuts 6 to move back and forth.

[0026] Two lead screws 7 extend out of the bracket at the same end, and a sprocket 8 is fixedly installed at each end. The two sprockets 8 are exactly the same size and are meshed with a chain 9 on their outer sides, so as to realize that the two lead screws 7 rotate synchronously, at the same speed and in the same direction. A handwheel 10 is fixedly installed at the outer end of one of the lead screws 7. The surface of the handwheel is provided with anti-slip texture to facilitate the operator to hold and rotate it.

[0027] Each wire nut 6 has a vertical support plate 11 welded and fixed on its upper surface. A horizontal support plate 22 is installed on the top of the vertical support plate 11. An anchor-type hook 12 is installed on the outer end of the horizontal support plate 22. A detachable lifting ring 13 is hung on the anchor-type hook 12. A plug-in post 14 is fixedly installed on the detachable lifting ring 13. During operation, the plug-in post 14 can be pre-inserted into the circular positioning holes reserved on both sides of the straightening mold body 2 to achieve a reliable connection between the tooling and the straightening mold body 2.

[0028] The idler conveyor belt 15 is horizontally installed in the middle area of ​​the support 4. The idler conveyor belt 15 consists of two sets of symmetrically arranged roller groups 20. The two sets of roller groups 20 are arranged along the horizontal center line of the support 4. All roller groups 20 are made of stainless steel rollers with rubber sleeves on the outside to prevent the bottom surface of the straightening mold body 2 from being scratched.

[0029] All four corners of the bottom of the bracket 4 are equipped with swivel casters 16. Each swivel caster 16 integrates a brake lock 21. The swivel casters 16 rotate flexibly and turn easily. Stepping on the brake lock 21 can lock the swivel casters 16 to prevent the tooling from sliding. Vertical through holes are opened on the left and right sides of the bottom of the bracket 4. Positioning pins 17 are inserted into the vertical through holes. The positioning pins 17 can be pulled up and down, and the lower end can be inserted into the preset hole in the ground to form a double fixation with the brake lock 21.

[0030] The upper surface of the mold mounting platform 1 has two parallel T-shaped through slots 18 along the mold moving direction. The bracket 4 faces the mold mounting platform 1 and two positioning plates 19 are welded and fixed at the positions corresponding to the T-shaped through slots 18. The shape of the positioning plates 19 matches the T-shaped through slots 18 and can be directly inserted into the slots to realize the quick and accurate docking of the mold replacement component 3 and the mold mounting platform 1, and ensure the tooling alignment accuracy.

[0031] In actual use, the bracket 4 is first pushed, and the mold replacement assembly 3 is moved to the working position with the help of the universal casters 16. The positioning plate 19 is inserted into the T-shaped through groove 18 to complete the alignment. The brake locking device 21 is pressed to lock the universal casters 16. Then, the positioning pin 17 is inserted into the ground positioning hole to complete the tooling fixation. Then, all threaded fasteners between the straightening mold body 2 and the mold installation platform 1 are removed. The two plug-in pins 14 are inserted into the pre-reserved circular positioning holes on both sides of the straightening mold body 2. Then, the detachable lifting ring 13 is put on the outside of the anchor hook 12 and the detachable lifting ring 13 is locked and fixed. The anchor hook 12 is then hooked up.

[0032] The operator turns the handwheel 10 clockwise, and the sprocket 8 and chain 9 drive the two lead screws 7 to rotate synchronously. The lead screw seat 6 moves forward along the linear slide rail 5, smoothly pulling the straightening mold body 2 outward. The bottom of the mold is supported by the roller conveyor belt 15 throughout the process. After the mold is completely moved out, the positioning pin 17 is pulled out and the brake lock 21 is released, and the mold can be transferred to the designated area. When installing a new mold, the operator turns the handwheel 10 in the opposite direction, and the new mold can be smoothly pushed onto the mold installation platform 1. After tightening the threaded fasteners, the assembly is completed.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A straightening die changing tool comprising a die mounting platform on which a straightening die body is fitted and mounted, characterized by: A mold replacement assembly is provided on one side of the straightening mold body; The mold changing assembly includes a bracket, with linear slide rails mounted on both sides of the top of the bracket. A lead screw nut is slidably mounted on each linear slide rail, and a lead screw is fitted onto each lead screw nut. Two lead screws are movably mounted on both sides of the bracket via bearings. A sprocket is fixedly mounted on the same side end of each of the two lead screws, and a chain is fitted onto the outer sides of the two sprockets. A handwheel is fixedly mounted on the extended end of one of the lead screws. A vertical support plate is vertically mounted above each lead screw nut. A horizontal support plate is installed on the top of the straightening mold. An anchor-type hook is installed on the outer end of the horizontal support plate. A detachable lifting ring is hung on the anchor-type hook. A plug-in post is fixedly installed on the detachable lifting ring. The plug-in post is inserted into the circular positioning holes reserved on both sides of the straightening mold body. A roller conveyor belt is horizontally arranged on the support. Universal casters are installed at the four corners of the bottom of the support. Positioning pins are movably installed on both sides of the bottom of the support. The positioning pins are movably inserted into the preset holes on the ground on one side of the mold mounting platform.

2. The straightening die changing tool according to claim 1, characterized by: The upper surface of the mold mounting platform has two T-shaped through slots. The bracket has two positioning plates installed on the T-shaped through slots. The positioning plates are inserted into the T-shaped through slots. The straightening mold body is slidably engaged on the mold mounting platform. The straightening mold body is fixedly installed on the upper surface of the mold mounting platform by threaded fasteners.

3. A straightening die changing tool according to claim 2, characterized in that: The idler conveyor belt consists of two sets of rollers symmetrically installed on the horizontal centerline of the support. The rollers of the roller sets are made of stainless steel and have rubber sleeves installed on the outside.

4. A straightening die changing tool according to claim 3, characterized in that: Each of the aforementioned swivel casters is equipped with a brake lock.

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