A type of lifting and closing cold heading machine mold
By designing a lifting and closing cold heading machine mold, the problem of mold displacement and detachment after closing is solved, achieving stable mold fixation and sealing, and ensuring molding quality and equipment safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAICANG CHENHAN PRECISION MOLD CO LTD
- Filing Date
- 2025-07-27
- Publication Date
- 2026-07-03
AI Technical Summary
If the cold heading machine cannot be effectively fixed after closing, it may cause the mold to shift or detach, affecting the molding quality and wasting raw materials.
A lifting and closing cold heading machine mold was designed. Through the cooperation of fixing components, inserts and slots, the design of sealing rings and sealing grooves, and the cooperation of limit rods and drive motors, the upper and lower molds are accurately aligned and sealed to prevent shaking and leakage.
It effectively prevents mold displacement and leakage, ensures molding accuracy, reduces raw material waste, and improves equipment stability and safety.
Smart Images
Figure CN224444467U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of highway bridge maintenance technology, and in particular to a lifting and closing type cold heading machine mold. Background Technology
[0002] Cold heading machines are specialized equipment primarily used for the mass production of fasteners such as bolts, screws, rivets, pins, and nuts. Cold heading is a new type of non-cutting metal pressure processing technology. It is a processing method that uses a mold to redistribute and transfer the volume of metal, resulting in plastic deformation to form the desired parts or blanks.
[0003] However, in the existing technology, cold heading machines cannot be effectively fixed after closing. When the device is subjected to external force and shakes, the mold may shift or detach, which will cause changes during subsequent mold forming, thus wasting raw materials, making the formed mold unusable, and may also cause raw material leakage, causing unnecessary damage. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a lifting and closing cold heading machine mold, which aims to improve the problem that the cold heading machine cannot be effectively fixed after closing, and the mold may shift or detach when the device shakes due to external force.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] A lifting and closing cold heading machine mold includes a lower mold, an upper mold on the upper surface of the lower mold, mounting rods on both the left and right sides of the lower mold, and grooves matching the mounting rods on both the left and right sides of the upper mold. The upper mold is installed between two sets of mounting rods. Adjustment frames are fixedly installed at both the front and rear ends of the lower mold, and sliding frames are fixedly installed at both the front and rear ends of the upper mold. The two sets of sliding frames are respectively movably sleeved on the outside of the two sets of adjustment frames. Fixing components are provided on the opposite sides of the two sets of mounting rods.
[0007] Preferably, the two sets of fixing components include a plug rod, which is movably inserted into the lower end of the mounting rod, and the upper mold has insertion holes on both the left and right sides that match the plug rod. An adjusting plate is installed on the left end of the plug rod, and a fixing spring is sleeved on the outside of the plug rod, with the left and right ends of the fixing spring connected to the mounting rod and the adjusting plate, respectively.
[0008] Preferably, a stabilizing seat is installed at each of the four corners of the lower surface of the lower mold, and a rubber block is provided at the lower end of each of the four stabilizing seats.
[0009] Preferably, cooling fans are provided on both the left and right sides of the upper surface of the upper mold.
[0010] Preferably, the upper mold has inserts at all four corners of its lower surface and slots at all four corners of its upper surface.
[0011] Preferably, a sealing ring is provided on the outer side of the lower surface of the upper mold, and a matching sealing groove is provided on the outer side of the upper surface of the lower mold.
[0012] Preferably, a limiting rod is rotatably inserted at the middle position of the two sets of sliding frames, and a rotating groove is provided on the upper surface of the upper mold. The limiting rod is installed inside the rotating groove. Limiting grooves matching the limiting rod are opened on both the front and rear sides of the two sets of adjusting frames, and the limiting rod is inserted into the limiting groove.
[0013] Preferably, gears are fitted at both ends of the limiting rod, and the right side of the two sets of adjusting frames is provided with meshing tooth grooves. A drive motor is installed at the front end of the limiting rod, and the drive motor is fixedly installed on the front surface of the front sliding frame.
[0014] This utility model has the following beneficial effects:
[0015] 1. In this utility model, by setting a fixing component, after the upper mold and the lower mold are tightly fitted, the elastic force of the fixing spring drives the adjusting plate to move, and then the adjusting plate drives the insert rod to be inserted into the insertion hole opened in the upper mold to fix the upper mold, thereby preventing the upper mold from shifting or leaking during use, which would affect the subsequent mold forming.
[0016] 2. In this utility model, by providing a plug, a slot, a sealing ring and a sealing groove, the tight fit between the plug and the slot can effectively prevent the upper mold from horizontally shifting or tilting during the cold heading process, and the fit between the sealing ring and the sealing groove can effectively seal the gap between the upper mold and the lower mold.
[0017] 3. In this utility model, by setting an adjustment frame, a sliding frame, a limit rod, a gear and a drive motor, the upper mold moves stably during operation without any deviation, thereby ensuring precise alignment of the upper and lower molds. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of a lifting and closing type cold heading machine mold proposed in this utility model;
[0019] Figure 2 This is a partial structural diagram of the upper mold of a lifting and closing type cold heading machine mold proposed in this utility model;
[0020] Figure 3 This is a partial structural diagram of the insertion rod of a lifting and closing cold heading machine mold proposed in this utility model;
[0021] Figure 4This is a partial disassembly diagram of the upper mold of a lifting and closing cold heading machine mold proposed in this utility model;
[0022] Figure 5 This is a partial schematic diagram of the lower mold of a lifting and closing type cold heading machine mold proposed in this utility model;
[0023] Figure 6 This is a cross-sectional view of the internal structure of the adjustment frame of a lifting and closing cold heading machine mold proposed in this utility model.
[0024] Legend:
[0025] 1. Lower mold; 2. Upper mold; 3. Mounting rod; 4. Stabilizing seat; 5. Insert rod; 6. Adjusting plate; 7. Fixing spring; 8. Cooling fan; 9. Insert block; 10. Slot; 11. Sealing ring; 12. Sealing groove; 13. Adjusting frame; 14. Sliding frame; 15. Limiting rod; 16. Rotating groove; 17. Gear; 18. Drive motor. Detailed Implementation
[0026] 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.
[0027] Reference Figure 1 and Figure 2 The present invention provides an embodiment of a lifting and closing cold heading machine mold, comprising a lower mold 1, an upper mold 2 disposed on the upper surface of the lower mold 1, mounting rods 3 disposed on both the left and right sides of the lower mold 1, and grooves matching the mounting rods 3 opened on both the left and right sides of the upper mold 2, and the upper mold 2 is installed between the two sets of mounting rods 3, adjusting frames 13 are fixedly installed at both the front and rear ends of the lower mold 1, and sliding frames 14 are fixedly installed at both the front and rear ends of the upper mold 2, and the two sets of sliding frames 14 are respectively movably sleeved on the outside of the two sets of adjusting frames 13, and fixing components are respectively disposed on the opposite sides of the two sets of mounting rods 3.
[0028] Specifically, the upper mold 2 is moved to fit with the lower mold 1 by the cooperation of the sliding groove and the adjusting frame 13. Then, the upper mold 2 is closed more precisely by the cooperation of the mounting rod 3 with the slot opened in the upper mold 2, and there will be no deviation. After the upper mold 2 fits, the upper mold 2 is fixed by the fixing component, which can achieve sealing molding.
[0029] Reference Figure 3The two sets of fixing components include a plug rod 5, which is movably inserted into the lower end of the mounting rod 3. The upper mold 2 has insertion holes on both the left and right sides that match the plug rod 5. An adjusting piece 6 is installed on the left end of the plug rod 5. A fixing spring 7 is sleeved on the outside of the plug rod 5, and the left and right ends of the fixing spring 7 are respectively connected to the mounting rod 3 and the adjusting piece 6.
[0030] Specifically, after the upper mold 2 moves to fit against the lower mold 1, the adjusting plate 6 is moved by the fixing spring 7, which in turn moves the insert rod 5. The insert rod 5 is then inserted into the insertion holes on the left and right sides of the upper mold 2 to fix the upper mold 2. When it is necessary to remove the upper mold 2, the adjusting plate 6 is pulled to disengage the insert rod 5 from the insertion holes of the upper mold 2, thereby releasing the fixation of the upper mold 2 and allowing the upper mold 2 to be removed.
[0031] Reference Figure 1 and Figure 2 The lower mold 1 has four corners of the lower mold with stabilizing seats 4, and the lower ends of the four sets of stabilizing seats 4 are all equipped with rubber blocks. The upper mold 2 has cooling fans 8 on the left and right sides of the upper surface.
[0032] Specifically, the stabilizing base 4 is installed at the four corners of the lower surface of the lower mold 1, a layout that conforms to mechanical principles. The four corner supports can evenly bear the weight of the mold, effectively preventing the lower mold 1 from tilting or shaking during use. The rubber block is located at the lower end of the stabilizing base 4, possessing good elasticity and cushioning performance. When the mold is subjected to impact or vibration, the rubber block can undergo a certain degree of elastic deformation, absorbing and dispersing energy. During cold heading, the mold's contact with the metal billet generates a large amount of heat, especially since the upper mold 2 directly bears the heading pressure, causing its temperature to rise rapidly. The cooling fan 8, through forced convection cooling, can effectively reduce the temperature of the mold surface, preventing the mold from deforming or wearing due to overheating.
[0033] Reference Figure 4 and Figure 5 The upper mold 2 has four corners of the lower surface with insert blocks 9, and the lower mold 1 has four corners of the upper surface with matching slots 10. The upper mold 2 has a sealing ring 11 on the outer side of the lower surface, and the lower mold 1 has a sealing groove 12 on the outer side of the upper surface.
[0034] Specifically, the tight fit between the insert 9 and the slot 10 can effectively prevent the upper mold 2 from shifting horizontally or tilting during the cold forging process. Especially under high pressure, it can ensure the stability of the mold. The fit between the sealing ring 11 and the sealing groove 12 can effectively seal the gap between the upper mold 2 and the lower mold 1, preventing metal chips or lubricant generated during the cold forging process from leaking to the outside of the mold, polluting the working environment or affecting the operation of the equipment.
[0035] Reference Figure 6A limiting rod 15 is rotatably inserted in the middle of the two sets of sliding frames 14, and a rotating groove 16 is provided on the upper surface of the upper mold 2. The limiting rod 15 is installed inside the rotating groove 16. Limiting grooves matching the limiting rod 15 are opened on both the front and rear sides of the two sets of adjusting frames 13, and the limiting rod 15 is inserted in the limiting groove. Gears 17 are sleeved on both the front and rear ends of the limiting rod 15, and a toothed groove that meshes with it is opened on the right side inside the two sets of adjusting frames 13. A drive motor 18 is installed at the front end of the limiting rod 15, and the drive motor 18 is fixedly installed on the front surface of the front sliding frame 14.
[0036] Specifically, when the position of the upper mold 2 needs to be moved, the drive motor 18 is turned on, causing the limiting rod 15 to rotate within the sliding frame 14 and the rotating groove 16. Then, the gears 17 at both ends of the limiting rod 15 engage with the toothed groove on the right side of the adjusting frame 13, causing the gears 17 to move on the toothed groove during rotation. This causes the limiting rod 15 to move within the limiting groove of the adjusting frame 13, which in turn causes the moving frame to move outside the adjusting frame 13, thereby moving the upper mold 2. This ensures that the upper mold 2 fits tightly against the lower mold 1, guaranteeing the stability of the movement and preventing deviations during movement that could lead to molding failure.
[0037] Working principle: The raw material to be formed is placed in the upper mold 2 and the lower mold 1. Then, the two sets of fixing components are adjusted so that the fixing components do not block the upper mold 2. Then, the drive motor 18 is turned on, which drives the limit rod 15 to rotate. This causes the gear 17 and the inner tooth groove of the adjusting frame 13 to engage, which drives the upper mold 2 to move and fit against the lower mold 1. Then, the position of the upper mold 2 is fixed by the fixing components. The tight fit between the insert block 9 and the slot 10 can effectively prevent the upper mold 2 from horizontally displacing or tilting during the cold heading process. The fit between the sealing ring 11 and the sealing groove 12 can effectively seal the gap between the upper mold 2 and the lower mold 1. Then, the cooling fan 8 is turned on to prevent the temperature of the mold from getting too high.
[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 lift-on-close cold header die comprising a lower die (1), characterised in that: The upper surface of the lower mold (1) is provided with an upper mold (2). The lower mold (1) is provided with mounting rods (3) on both the left and right sides. The upper mold (2) has slots on both the left and right sides that match the mounting rods (3). The upper mold (2) is installed between the two sets of mounting rods (3). The lower mold (1) is fixedly installed with adjustment frames (13) at both the front and rear ends. The upper mold (2) is fixedly installed with sliding frames (14) at both the front and rear ends. The two sets of sliding frames (14) are respectively movably sleeved on the outside of the two sets of adjustment frames (13). The two sets of mounting rods (3) are respectively provided with fixing components on the opposite sides.
2. A lift-on-close cold header die as defined in claim 1 wherein: The two sets of fixing components include a plug rod (5), which is movably inserted into the lower end of the mounting rod (3). The upper mold (2) has insertion holes on both the left and right sides that match the plug rod (5). An adjusting piece (6) is installed on the left end of the plug rod (5). A fixing spring (7) is sleeved on the outside of the plug rod (5), and the left and right ends of the fixing spring (7) are respectively connected to the mounting rod (3) and the adjusting piece (6).
3. A lift-on close cold header die as set forth in claim 1, wherein: The lower mold (1) is equipped with stabilizing seats (4) at the four corners of its lower surface, and each of the four stabilizing seats (4) has a rubber block at its lower end.
4. A lift-on close cold header die as set forth in claim 1, wherein: Cooling fans (8) are provided on both the left and right sides of the upper surface of the upper mold (2).
5. A lift-on close cold header die as defined in claim 1 wherein: The upper mold (2) has inserts (9) at the four corners of its lower surface, and the lower mold (1) has slots (10) at the four corners of its upper surface.
6. A lift-on close cold header die as defined in claim 1 wherein: A sealing ring (11) is provided on the outer side of the lower surface of the upper mold (2), and a matching sealing groove (12) is opened on the outer side of the upper surface of the lower mold (1).
7. A lift-on close cold header die as defined in claim 1 wherein: A limiting rod (15) is rotatably inserted in the middle position of the two sets of sliding frames (14), and a rotating groove (16) is provided on the upper surface of the upper mold (2), and the limiting rod (15) is installed inside the rotating groove (16). The front and rear sides of the two sets of adjusting frames (13) are provided with limiting grooves that match the limiting rod (15), and the limiting rod (15) is inserted in the limiting groove.
8. A lift-on close cold header die as defined in claim 7 wherein: The limiting rod (15) is fitted with gears (17) at both ends, and the two sets of adjusting frames (13) have meshing tooth grooves on the right side inside. The limiting rod (15) is equipped with a drive motor (18) at the front end, and the drive motor (18) is fixedly installed on the front surface of the front sliding frame (14).