Coiled material pressing device
By designing a hydraulically driven pressure bar mechanism on a cold heading machine, the safety hazards of cutting the binding tape on the roll material were solved, and a safe and reliable roll material clamping effect was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SIJIN INTELLIGENT FORMING EQUIP CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-08
AI Technical Summary
On cold heading machines, the rolled material is prone to rebound when the binding straps or wire ropes are cut, posing a safety hazard and potentially causing injury to operators.
Design a roll material clamping device that uses a hydraulic transmission unit to drive a pressure rod, and uses a linkage mechanism to clamp the roll material to prevent it from popping out.
This effectively prevents the roll material from popping out after the binding straps are untied, avoiding injury to operators and improving operational safety.
Smart Images
Figure CN224208825U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of manufacturing technology of cold heading forming machines, and in particular to a coil pressing device. Background Technology
[0002] A cold heading machine is a forging and forming device that thickens the top of bars or coils at room temperature. It is a specialized piece of equipment primarily used for the mass production of fasteners such as nuts and bolts. Specifically, the cold heading machine feeds coiled steel into the machine body via a feeding mechanism, cuts it into several segments by a shearing mechanism, and then upsets these segments by an upsetting mechanism. The steel segments undergo forming, chamfering, thread rolling, diameter reduction, and edge trimming to produce screws, bolts, and other products.
[0003] On cold heading machines, coiled metal wire is typically used, secured by steel wire rope or binding straps. However, when these binding straps or wire ropes are cut, the coil can rebound and spring open instantly, posing a significant danger. This is especially dangerous in large-scale applications, potentially causing serious injury to operators. For safer operation, the market urgently needs a coil clamping device. Summary of the Invention
[0004] The purpose of this invention is to provide a roll pressing device to solve the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical measures: a roll material pressing device, applied to a cold heading machine, characterized in that: it includes a bottom beam of the cold heading machine, on which a first base, a second base and a third base are provided; a hydraulic transmission unit is rotatably fixed on the first base; a first connecting rod is hinged on the second base; a connecting rod sleeve with an inner cavity is hinged to the other end of the first connecting rod; a pressure rod is hinged on the third base; the pressure rod passes through the inner cavity of the connecting rod sleeve; and a connector is provided at the front end of the piston rod of the hydraulic transmission unit, the connector being hinged to the first connecting rod.
[0006] Compared with the prior art, the advantages of this utility model are: by pulling the hydraulic transmission unit, the pressure bar can press down on the bundled roll material. When the roll material pops out after the binding strap is untied, it will be blocked by the pressure bar and will not cause injury to the operator.
[0007] As an improvement to this utility model, the position of the hinge point between the connector and the first connecting rod is at least within half of the length of the first connecting rod near the second base. The purpose of this design is that the connector on the piston rod of the hydraulic transmission unit pulls the first connecting rod; although its power arm is smaller than its resistance arm, the connecting rod sleeve of the first connecting rod can drive the pressure rod, increasing the swing amplitude of the pressure rod.
[0008] As an improvement of this utility model, the hydraulic transmission unit is a swing-tail type cylinder. The purpose of this design is that this swing-tail type cylinder achieves a certain degree of rotation through the hinge device at the tail, thereby allowing the piston rod to swing slightly, so that the connecting rod mechanism can operate smoothly.
[0009] As an improvement to this utility model, a linear bearing is provided inside the connecting rod sleeve. The purpose of this design is that the linear bearing provides point-to-point friction, resulting in lower frictional force and smoother movement of the pressure rod within the connecting rod sleeve.
[0010] As an improvement of this utility model, the first base and the second base are disposed on the side of the bottom beam, and the third base is disposed on the front of the bottom beam. The purpose of this design is that the planes on which the first base, the second base, and the third base are located are offset from each other, so that these parts will not interfere with each other. Attached Figure Description
[0011] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.
[0012] In the attached diagram:
[0013] Figure 1 This is a schematic diagram of the roll pressing device described in this utility model.
[0014] Figure 2 This is a schematic diagram of the roll clamping device described in this utility model when the roll material is bundled.
[0015] Figure 3 This is a schematic diagram of the hydraulic transmission unit of the roll pressing device described in this utility model being pulled.
[0016] Figure 4 This is a schematic diagram of the roll clamping device after the roll material is released according to this utility model.
[0017] Figure 5 This is a schematic diagram of the hydraulic transmission unit of the roll pressing device described in this utility model when it is released.
[0018] Explanation of reference numerals in the attached drawings: 1. Bottom beam; 2. First base; 3. Second base; 4. Third base; 5. Hydraulic transmission unit; 6. First connecting rod; 7. Connecting rod sleeve; 8. Pressure rod; 9. Connector; 10. Cold heading machine body; 11. Roll material; 12. Binding strap. Detailed Implementation
[0019] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0020] Example 1
[0021] Please refer to Figure 1 -5.
[0022] This embodiment provides a roll clamping device applied to a cold heading machine. Specifically, it clamps the roll 11 installed on the body 10 of the cold heading machine to prevent the roll 11 from popping out and injuring the operator when the binding strap 12 is untied.
[0023] In the embodiments of this utility model application, please refer to Figure 1 The roll forming device is installed on the bottom beam 1 of the cold heading machine. A first base 2, a second base 3 and a third base 4 are provided on the bottom beam 1. A hydraulic transmission unit 5 is rotatably fixed on the first base 2. In this embodiment, it is a pneumatic cylinder, but a hydraulic cylinder can also be selected.
[0024] One end of the first connecting rod 6 is hinged to the second base 3, and the head region of the other end of the first connecting rod 6 is hinged to a connecting rod sleeve 7 with an inner cavity.
[0025] A pressure rod 8 is hinged to the third base 4. The pressure rod 8 passes through the inner cavity of the connecting rod sleeve 7 and can slide freely within the inner cavity of the connecting rod sleeve 7.
[0026] The piston rod of the hydraulic transmission unit 5 is provided with a connector 9 at its front end. The connector 9 is hinged to the first connecting rod 6. The connector 9 can be a Y-type connector or an I-type connector for the hydraulic transmission unit 5, both of which are standard parts.
[0027] Furthermore, the hinge point between the connector 9 and the first connecting rod 6 is located at least within half the length of the first connecting rod 6 near the second base 3. In this embodiment, the hinge point is located approximately one-fifth of the way away from the second base 3. This lever structure allows the connector 9 on the piston rod of the hydraulic transmission unit 5 to pull the first connecting rod 6. Although its power arm is smaller than its resistance arm, it can cause the connecting sleeve 7 of the first connecting rod 6 to drive the pressure rod 8, greatly increasing the swing amplitude of the pressure rod 8.
[0028] Furthermore, the hydraulic transmission unit 5 is a swing-tail type cylinder. This type of cylinder achieves a certain degree of rotation through a hinge device at the tail, thereby causing the piston rod to swing slightly, allowing the linkage mechanism to operate smoothly.
[0029] Furthermore, a linear bearing is provided inside the connecting rod sleeve 7. The linear bearing provides point-to-point friction, resulting in lower frictional force and smoother movement of the pressure rod 8 within the connecting rod sleeve 7.
[0030] Furthermore, the first base 2 and the second base 3 are disposed on the side of the bottom beam 1, and the third base 4 is disposed on the front of the bottom beam 1. This structure ensures that the planes on which the first base 2, the second base 3, and the third base 4 are located are offset from each other, preventing these components from interfering with each other.
[0031] The first base 2 and the second base 3 can be selected from the inclined lug base of the hydraulic transmission unit 5. The third base 4 can be selected from the double lug base or the single lug base of the hydraulic transmission unit 5. These are all common industrial components, with low cost and convenient material selection.
[0032] Figure 2 This is a schematic diagram showing the roll material being bundled before the roll material clamping device starts working.
[0033] Figure 3 This is a schematic diagram showing the pressure bar rising to block the roll material when the hydraulic transmission unit of the roll material clamping device is pulled.
[0034] Figure 4 This is a schematic diagram showing the pressure bar of the roll clamping device tightly adhering to the roll after it has been released.
[0035] Figure 5 This is a schematic diagram showing the decompressed roll material releasing its elastic potential energy after the hydraulic transmission unit of the roll material clamping device is released.
[0036] The beneficial effect of this utility model is that: by pulling the hydraulic transmission unit 5, the pressure rod 8 can press down the bundled roll 11. After the binding strap 12 is untied, when the roll 11 pops out, it will be blocked by the pressure rod 8 and will not cause injury to the operator.
[0037] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0038] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.
Claims
1. A roll forming device, applied to a cold heading machine, characterized in that: The machine includes a base beam (1) of a cold heading forming machine, on which a first base (2), a second base (3) and a third base (4) are provided. A hydraulic transmission unit (5) is rotatably fixed on the first base (2). A first connecting rod (6) is hinged on the second base (3). A connecting rod sleeve (7) with an inner cavity is hinged to the other end of the first connecting rod (6). A pressure rod (8) is hinged on the third base (4). The pressure rod (8) passes through the inner cavity of the connecting rod sleeve (7). A connector (9) is provided at the front end of the piston rod of the hydraulic transmission unit (5). The connector (9) is hinged to the first connecting rod (6).
2. The roll pressing device according to claim 1, characterized in that: The position of the hinge point between the connector (9) and the first link (6) is at least within half of the length of the first link (6) on the side closest to the second base (3).
3. The roll pressing device according to claim 1, characterized in that: The hydraulic transmission unit (5) is a swing-tail type cylinder.
4. The roll pressing device according to claim 1, characterized in that: A linear bearing is provided inside the connecting rod sleeve (7).
5. The roll pressing device according to claim 1, characterized in that: The first base (2) and the second base (3) are disposed on the side of the bottom beam (1), and the third base (4) is disposed on the front of the bottom beam (1).