Device for quickly changing feeding wheels

Abstract

The utility model relates to a quick change feeding wheel device which comprises a feeding wheel frame, a feeding wheel fixing seat used for rotating a feeding wheel is fixed on the feeding wheel frame, a positioning shaft used for pre-positioning the whole quick change feeding wheel device is installed on the feeding wheel fixing seat, a first guide key is arranged on the feeding wheel fixing seat, and a second guide key is arranged on the first guide key. A positioning hole is formed in the feeding wheel fixing seat, and a first positioning pin for preventing the feeding wheel from shifting is inserted into the positioning hole; and a second guide key parallel to the first guide key is arranged on the cold header body. When the feeding wheel needs to be replaced, the positioning shaft is inserted into the cold header, then the first guide key and the second guide key are aligned side by side, the old feeding wheel is pushed out and fixed through the first positioning pin, and then the whole device is moved to the ground. When the feeding wheel is used, a new feeding wheel is pushed in and fixed through the first positioning pin, then the positioning shaft and the first guide key are aligned to the corresponding position, the first positioning pin is taken off, and the new feeding wheel is pushed in. The whole device is efficient in disassembly and assembly, and safe and guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of cold heading machine manufacturing technology, and in particular to a quick-change feed wheel device. Background Technology

[0002] A cold heading machine is a forging and forming device that thickens the top of bars or wires 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, where it is sheared into several segments by a shearing mechanism. These segments are then upset by an upsetting mechanism, undergoing processes such as forming, chamfering, thread rolling, diameter reduction, and edge trimming to produce screws, bolts, and other products.

[0003] In the feeding mechanism, steel of different wire diameters requires feeding rollers of different sizes for hard extrusion. For steel with thicker wire diameters, larger feeding rollers are needed for crushing, and these feeding rollers are quite heavy. Loading and unloading the feeding rollers requires lifting the heavy rollers to a high position, which becomes very laborious and cumbersome, especially on large machines. Furthermore, if the feeding rollers slip during loading and unloading, it can cause injury to the operator. The quick-change feeding roller device was developed to prevent the feeding rollers from falling while facilitating loading and unloading. Summary of the Invention

[0004] The purpose of this invention is to provide a device for quickly changing the feed wheel, so as 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 quick-change feeding wheel device, applied on a cold heading machine, including a crane hook, characterized in that: a feeding wheel frame is suspended under the crane hook, a feeding wheel fixing seat for rotating the feeding wheel is fixed on the feeding wheel frame, a positioning shaft for pre-positioning the entire quick-change feeding wheel device is installed on the feeding wheel fixing seat, a first guide key is provided on the feeding wheel fixing seat, a positioning hole is provided on the feeding wheel fixing seat, the positioning hole is used to insert a first positioning pin to prevent the feeding wheel from shifting; a second guide key is provided on the cold heading machine body, parallel to the first guide key.

[0006] Compared with the prior art, the advantages of this utility model are as follows: When replacing the feeding wheel, use a crane hook to insert the positioning shaft of the entire quick-change feeding wheel device into the cold heading machine body, and then align the first guide key and the second guide key side by side. At this time, the old feeding wheel can be pushed from the cold heading machine body to the quick-change feeding wheel device, and then the first positioning pin is inserted into the positioning hole to fix it. Then, move the entire device to the ground. Remove the first positioning pin, push out the old feeding wheel, and then push in the new feeding wheel, fixing it with the first positioning pin. Use a crane hook to lift the entire device onto the cold heading machine, align the positioning shaft and the first guide key in the corresponding positions, remove the first positioning pin, and push in the new feeding wheel.

[0007] This new structure is efficient to assemble and disassemble, and safe to use.

[0008] As an improvement of this utility model, the length of the first guide key is less than the width of the feeding wheel. The purpose of this design is that, due to the arrangement of the first and second guide keys, the inner ring of the feeding wheel must be provided with a keyway extending through the entire wheel thickness to facilitate the insertion of the guide keys. Since the old feeding wheel needs to be connected to the feeding wheel fixing seat of the quick-change feeding wheel device when it is replaced, this invention uses a longer second guide key to smoothly guide the old feeding wheel to the feeding wheel fixing seat, where the feeding wheel fixing seat is also provided with a keyway for placing the first and second guide keys.

[0009] As an improvement of this utility model, the feeding wheel frame is fixed to the feeding wheel fixing seat by a second positioning pin. The purpose of this design is to securely fix the feeding wheel fixing seat and the feeding wheel frame together.

[0010] As an improvement to this utility model, the positioning shaft passes through the center of the feed wheel fixing seat and the feed wheel frame, and is then fixed with a fixing nut. The purpose of this design is that the positioning shaft allows the entire quick-change feed wheel device to be inserted into the cold heading machine body, achieving initial pre-fixation. Furthermore, this structure, which passes through the feed wheel fixing seat and the feed wheel frame, also makes the two parts more securely fixed, in addition to being secured by the second positioning pin. 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 quick-change feed wheel device described in this utility model on a cold heading machine.

[0014] Figure 2 This is a cross-sectional schematic diagram of the quick-change feed wheel device described in this utility model.

[0015] Figure 3 This is a schematic diagram of the quick-change feed wheel device of this utility model during the loading of the feed wheel.

[0016] Figure 4 This is a schematic diagram of the quick-change feed wheel device of this utility model during the unloading of the feed wheel.

[0017] Figure 5 This is a schematic diagram of the device for quickly changing the feed wheel using a crane, as described in this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Crane hook; 2. Feeding wheel frame; 3. Feeding wheel; 4. Feeding wheel fixing seat; 5. Positioning shaft; 6. First guide key; 7. Positioning hole; 8. First positioning pin; 9. Fixing nut; 10. Second positioning pin; 11. Cold heading machine body; 12. Large cavity; 13. Wire; 14. Second guide key; 15. Crane. 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 quick-change feed roller device, applied to the feeding mechanism of a cold heading machine. Different sizes of feed rollers are required to match different diameter wires 13, necessitating replacement. The function of the feed rollers is to extrude the bent wire 13 into a straight shape through the rolling action of the feed rollers, facilitating processing in the next step.

[0023] This embodiment provides a quick-change feed wheel device, including a crane hook 1, with a feed wheel frame 2 hanging below the crane hook 1. A feed wheel fixing seat 4 for rotating and transporting feed wheels 3 is fixed on the feed wheel frame 2. A positioning shaft 5 is installed on the feed wheel fixing seat 4 to pre-position the entire quick-change feed wheel device. The function of the positioning shaft 5 is to insert the entire quick-change feed wheel device into the mounting hole of the cold heading machine for initial fixation.

[0024] In the embodiments of this utility model application, please refer to Figure 2The feeding wheel fixing seat 4 is provided with a first guide key 6 and a positioning hole 7, which is used to insert a first positioning pin 8 to prevent the feeding wheel 3 from shifting. A second guide key 14 is provided on the cold heading machine body 11, which is parallel to the first guide key 6. The length of the second guide key 14 is larger than the width of the feeding wheel 3.

[0025] Furthermore, in an embodiment of this utility model application, the length of the first guide key 6 is half the width of the feed wheel 3. Due to the arrangement of the first guide key 6 and the second guide key 14, the inner ring of the feed wheel 3 must be provided with a keyway that extends through the entire wheel thickness to facilitate the insertion of the guide key. Since the old feed wheel 3 needs to be connected to the feed wheel fixing seat 4 of the quick-change feed wheel device when it is replaced, in this invention, the old feed wheel 3 is smoothly guided to the feed wheel fixing seat 4 by using a longer second guide key 14 (in this embodiment, the length of the second guide key 14 is 1.5 times the width of the feed wheel 3). The feed wheel fixing seat 4 is also provided with a keyway for placing the first guide key 6 and the second guide key 14.

[0026] Furthermore, the feeding wheel frame 2 is fixed to the feeding wheel fixing seat 4 by the second positioning pin 10. In the embodiment of this utility model application, there are two second positioning pins 10, arranged in the upper and lower regions, to securely fix the two parts, the feeding wheel fixing seat 4 and the feeding wheel frame 2.

[0027] Furthermore, the positioning shaft 5 passes through the center of the feed wheel fixing seat 4 and the feed wheel frame 2, and is then fixed with the fixing nut 9. The function of the positioning shaft 5 is to insert the entire quick-change feed wheel device into the cold heading machine body 11, achieving preliminary pre-fixation. In addition, this structure that passes through the feed wheel fixing seat 4 and the feed wheel frame 2 also makes the two parts more secure on the basis of being fixed by the second positioning pin 10.

[0028] Furthermore, the feed wheel fixing seat 4 is provided with a large cavity 12, which is used to achieve the weight reduction of the parts while ensuring strength.

[0029] This embodiment provides a quick-change feeding wheel device, which is connected as follows: the two parts, feeding wheel fixing seat 4 and feeding wheel frame 2, are fixed by the second positioning pin 10, the positioning shaft 5 passes through the two parts, feeding wheel fixing seat 4 and feeding wheel frame 2, and is then firmly fixed by the fixing nut 9. The first guide key 6 and the feeding wheel fixing seat 4 are interference fit, and the keyway on the feeding wheel 3 is clearance fit with the first guide key 6 and the second guide key 14.

[0030] This embodiment provides a quick-change feed wheel device; please refer to [reference needed]. Figure 3 and Figure 4(For ease of understanding, the feed roller before movement is shown with blurred lines.) When replacing feed roller 3, the crane hook 1 is lowered from the gantry crane 15. The positioning shaft 5 of the entire quick-change feed roller device is inserted into the cold heading machine body 11 using the crane hook 1. Then, the first guide key 6 and the second guide key 14 are aligned side by side. At this time, the old feed roller 3 can be pushed from the cold heading machine body 11 along the direction of the two guide keys to the feed roller fixing seat 4 of the quick-change feed roller device (the keyway on the feed roller 3 and the first guide key 6 and the second guide key 14 are clearance fit, so they cannot be rotated circumferentially, but they can be translated axially). The first positioning pin 8 is then inserted into the positioning hole 7 for fixation. The entire device is then moved to the ground. The first positioning pin 8 is removed, and the old feed roller 3 is pushed out. Since the first guide key 6 and the feed roller fixing seat 4 are interference fit, the first guide key 6 will never move. The new feed roller 3 is then pushed in and fixed with the first positioning pin 8. Use the crane hook 1 to lift the entire device onto the cold heading machine. After the positioning shaft 5 and the first guide key 6 are aligned in the corresponding positions, remove the first positioning pin 8 and push in the new feeding wheel 3.

[0031] The advantages of this utility model are: efficient assembly and disassembly, and guaranteed safety.

[0032] 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.

[0033] 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.

[0034] 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 quick-change feed wheel device, comprising a crane hook (1), characterized in that: The crane hook (1) has a feeding wheel frame (2) hanging below it. The feeding wheel frame (2) has a feeding wheel fixing seat (4) for rotating the feeding wheel (3). The feeding wheel fixing seat (4) has a positioning shaft (5) for pre-positioning the entire quick-change feeding wheel device. The feeding wheel fixing seat (4) has a first guide key (6) and a positioning hole (7). The positioning hole (7) is used to insert a first positioning pin (8) to prevent the feeding wheel (3) from shifting. A second guide key (14) is provided on the cold heading machine body (11) alongside the first guide key (6).

2. The quick-change feed wheel device according to claim 1, characterized in that: The length of the first guide key (6) is less than the width of the feed wheel (3).

3. The quick-change feed wheel device according to claim 1, characterized in that: The positioning shaft (5) passes through the center of the feed wheel fixing seat (4) and the feed wheel frame (2) and is then fixed with a fixing nut (9).

4. The quick-change feed wheel device according to claim 1, characterized in that: The feeding wheel frame (2) is fixed to the feeding wheel fixing seat (4) by the second positioning pin (10).

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