Automatic starting device and thread rolling machine suitable for metal conductive workpieces

Abstract

The utility model discloses a kind of automatic starting device and thread rolling machine suitable for metal conductive workpiece, device includes first electrically conductive part, second electrically conductive part and relay, relay is connected with the starting switch of equipment, first electrically conductive part is connected with the ground terminal of relay, second electrically conductive part is grounded, first electrically conductive part and second electrically conductive part are insulated between arrangement, when metal conductive workpiece is contacted with first electrically conductive part and second electrically conductive part, the contact of relay is closed, to make the electric signal of starting switch on to equipment, make equipment run. The utility model completely avoids the processing error and equipment loss caused by workpiece not in place or idling under continuous thread rolling mode, improves thread rolling precision, reduces scrap rate.

Description

Technical Field

[0001] This utility model relates to the field of metal processing equipment technology, and in particular to an automatic starting device and a thread rolling machine suitable for conductive metal workpieces. Background Technology

[0002] In the current field of thread rolling machining technology, traditional machining methods have significant limitations: First, manual thread rolling mode relies on repeated manual pressing of the start switch, which not only results in low production efficiency, but also increases the risk of accidental activation due to frequent operation, increasing the potential for equipment failure; Second, although continuous thread rolling mode increases machining speed, due to the lack of a precise positioning and detection mechanism, machining often starts before the workpiece is fully in place, or the machine idles without a workpiece, leading to decreased machining accuracy, increased equipment wear and tear, and energy waste. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automatic starting device and a thread rolling machine suitable for conductive metal workpieces.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] On the one hand, this utility model provides an automatic starting device suitable for conductive metal workpieces, including a first conductive element, a second conductive element, and a relay. The relay is connected to the start switch of the equipment. The first conductive element is connected to the grounding terminal of the relay. The second conductive element is grounded. The first conductive element and the second conductive element are insulated from each other. When the conductive metal workpiece comes into contact with the first conductive element and the second conductive element, the contacts of the relay close to conduct the electrical signal of the start switch to the equipment, so that the equipment runs.

[0006] Furthermore, the first conductive element has a rod-shaped structure, and one end of the first conductive element serves as a conductive contact end that contacts the metal conductive workpiece.

[0007] Furthermore, the conductive contact end has a flat surface.

[0008] Furthermore, the second conductive element includes a support plate, the top surface of which forms a support surface for placing the metal conductive workpiece.

[0009] Furthermore, the first conductive element is disposed on the support surface.

[0010] Furthermore, the length direction of the first conductive element is the same as the length direction of the support plate.

[0011] Furthermore, the second conductive element also includes a base plate, which is disposed at the bottom of the support plate, and the width of the base plate is greater than the width of the support plate.

[0012] Furthermore, it also includes an insulating fastener, through which the first conductive element is fixed to the second conductive element.

[0013] Furthermore, the insulating fastener is provided with a connection hole, and the first conductive element passes through the connection hole.

[0014] On the other hand, this utility model also provides a thread rolling machine, including the above-mentioned automatic start device suitable for conductive metal workpieces.

[0015] The advantages of this invention compared to existing technologies are as follows: An automatic starting device for conductive metal workpieces includes a first conductive element, a second conductive element, and a relay. The relay is connected to the equipment's start switch, the first conductive element is connected to the relay's grounding terminal, the second conductive element is grounded, and the first and second conductive elements are insulated from each other. When the conductive metal workpiece contacts the first and second conductive elements, the relay contacts close, transmitting the start switch's electrical signal to the equipment, thus enabling the equipment to operate. This invention achieves precise linkage between equipment start-up and workpiece positioning through the insulation between the first and second conductive elements and the conductive triggering mechanism of the conductive metal workpiece. The relay contacts close to transmit the start signal only when the conductive metal workpiece fully contacts the first and second conductive elements and forms a conductive circuit. This completely avoids processing errors and equipment wear caused by workpiece not being in place or idling in continuous thread rolling mode, improving thread rolling accuracy and reducing scrap rate. Simultaneously, it avoids the frequent manual pressing of the start switch in manual thread rolling mode; the operator only needs to place the workpiece to trigger automatic equipment operation, reducing non-processing time and significantly shortening the production cycle.

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objectives, features and advantages of this utility model more obvious and easy to understand, the following are preferred embodiments, which are described in detail below. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of a thread rolling machine provided for a specific embodiment of this utility model;

[0019] Figure 2 A schematic diagram of the structure of an automatic starting device for a metal conductive workpiece provided for a specific embodiment of this utility model (with a metal conductive workpiece placed on it);

[0020] Figure 3 This is a schematic diagram of the structure of an automatic starting device for a metal conductive workpiece, provided for a specific embodiment of the present invention (in a state where no metal conductive workpiece is placed).

[0021] Figure Labels

[0022] 1. Automatic starting device for conductive metal workpieces; 11. First conductive component; 111. Conductive contact end; 12. Second conductive component; 121. Support plate; 1211. Support surface; 122. Base plate; 13. Insulating fastener; 100. Thread rolling machine; 200. Conductive metal workpiece. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," 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 communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0029] like Figures 1 to 3 As shown, this embodiment of the utility model provides a thread rolling machine 100, including an automatic starting device 1 suitable for conductive metal workpieces. The device includes a first conductive element 11, a second conductive element 12, and a relay. The relay is connected to the machine's start switch. The first conductive element 11 is connected to the grounding terminal of the relay, which is grounded via a ground wire. The second conductive element 12 is grounded via a ground wire. The first conductive element 11 and the second conductive element 12 are insulated from each other. When the conductive metal workpiece 200 contacts the first conductive element 11 and the second conductive element 12, the relay contacts close, thereby transmitting the electrical signal from the start switch to the machine, causing the machine to operate.

[0030] The relay has electromagnetic induction and contact switching functions. A small intermediate relay, model JZC-32F, can be used. Its coil is connected to the control circuit of the start switch of the thread rolling machine 100. When the coil is energized, it generates electromagnetic force, which actuates the internal contacts. A set of normally closed contacts of the relay is connected in series between the start switch and the equipment's power circuit. Normally, they are in an open state; only when the relay coil is energized will the contacts close, thus transmitting the electrical signal from the start switch to the thread rolling machine 100, causing the machine to run.

[0031] By insulating the first conductive element 11 and the second conductive element 12 and using the conductive triggering mechanism of the metal conductive workpiece 200, precise linkage between the start-up of the thread rolling machine 100 and the workpiece positioning is achieved. The relay contacts close to activate the start signal only when the metal conductive workpiece 200 is fully in contact with the first conductive element 11 and the second conductive element 12, forming a conductive circuit. This completely avoids processing errors and equipment wear caused by workpiece not being in place or idling in continuous thread rolling mode, improving thread rolling accuracy and reducing scrap rate. Simultaneously, it avoids the frequent manual pressing of the start switch in manual thread rolling mode; the operator only needs to place the workpiece to trigger automatic operation, reducing non-processing time and significantly shortening the production cycle.

[0032] In one embodiment, the first conductive element 11 has a rod-shaped structure, and one end of the first conductive element 11 serves as a conductive contact end 111 that contacts the metal conductive workpiece 200.

[0033] The first conductive component 11 is made of a material with excellent electrical conductivity and a certain mechanical strength, such as copper, brass (e.g., H65 brass, copper-zinc alloy), or aluminum-magnesium alloy. The dimensions of the first conductive component 11 need to be determined based on the working space of the thread hobbing machine 100 and the size of the workpiece being processed.

[0034] In one embodiment, the conductive contact end 111 is a flat surface, which can be ground using a surface grinder. The flat surface can also be silver-plated, with a silver plating thickness of approximately 0.01mm-0.03mm, to further reduce contact resistance and enhance conductivity and oxidation resistance.

[0035] When the rod-shaped first conductive element 11 contacts the conductive metal workpiece 200, it forms a linear or planar contact. Compared to point contact, this contact area is larger and more stable, effectively reducing contact resistance, ensuring reliable conduction of the conductive circuit, and reducing the possibility of equipment malfunction or failure to start due to poor contact. Simultaneously, the rod-shaped first conductive element 11 provides a clear positioning reference for the placement of the conductive metal workpiece 200. When placing the workpiece, the operator can intuitively judge whether the workpiece is in place by the position of the first conductive element 11, which helps improve the accuracy and consistency of workpiece positioning, thereby enhancing processing precision.

[0036] like Figure 3 As shown, the second conductive element 12 includes a support plate 121, the top surface of which forms a support surface 1211 for placing the metal conductive workpiece 200.

[0037] The support plate 121 must possess both conductivity and structural strength, and is made of materials such as stainless steel (e.g., 304 stainless steel, to meet grounding requirements) or aluminum alloy (e.g., 6061-T6, with conductive anodizing treatment). A V-groove or stepped surface is machined on the top surface of the support plate 121 to fit the workpiece shape. By using the top surface of the support plate 121 as the workpiece support surface 1211, and through this structural design, the stability of the conductive metal workpiece 200 during placement is ensured, preventing poor conductive contact due to shaking.

[0038] like Figure 3 As shown, the first conductive element 11 is located on the support surface 1211. This design reduces the space occupied inside the gear hobbing machine 100.

[0039] like Figure 3 As shown, the length direction of the first conductive element 11 is the same as the length direction of the support plate 121. This design provides greater tolerance for the placement of the metal conductive workpiece 200 on the support plate 121. Compared to vertical or staggered arrangements, this design increases the effective contact range. Furthermore, since the length direction of the first conductive element 11 is aligned with that of the support plate 121, operators only need to push the metal conductive workpiece 200 along the length direction of the support plate 121 when placing it, eliminating the need for complex multi-angle positioning and reducing the operator's workload and operational difficulty.

[0040] like Figure 3 As shown, the second conductive component 12 also includes a base plate 122, which is disposed at the bottom of the support plate 121 and fixed on the gear hobbing machine 100. The width of the base plate 122 is greater than the width of the support plate 121.

[0041] The base plate 122 also needs to consider both conductivity and structural strength, and is usually made of metal, such as stainless steel. The base plate 122 and the support plate 121 can be integrally formed or they can be separate structures. If a separate structure is used, to enhance the electrical connection between the base plate 122 and the support plate 121, conductive silver paste is evenly applied to the contact surfaces of the two. After curing, a reliable conductive layer is formed to ensure that the current is smoothly conducted to the ground.

[0042] In one embodiment, the width of the base plate 122 is greater than the width of the support plate 121. This design increases the bottom contact area and lowers the center of gravity, thereby enhancing stability.

[0043] like Figure 3As shown, the automatic starting device 1 for metal conductive workpieces also includes an insulating fastener 13, which has a block-shaped structure. The first conductive element 11 is fixed to the second conductive element 12 through the insulating fastener 13.

[0044] The insulating fastener 13 must possess excellent insulation and mechanical strength. The insulating fastener 13 can be made of acetal (nylon) or bakelite. Bakelite is a thermosetting plastic based on phenolic resin, which is made by the condensation polymerization of phenol and formaldehyde under the action of a catalyst. It has excellent insulation, heat resistance and mechanical strength.

[0045] The insulating fastener 13 effectively isolates the first conductive element 11 from the second conductive element 12, preventing short-circuit mis-triggering caused by direct contact between the two. The insulating fastener 13 provides precise positioning for the first conductive element 11, ensuring that its conductive contact end 111 is fixed in position, so that the metal conductive workpiece 200 can be reliably triggered and started every time it is placed. At the same time, the mechanical strength of the insulating fastener 13 ensures that the first conductive element 11 will not shift or loosen under operating conditions such as equipment vibration.

[0046] In one embodiment, the insulating fastener 13 has a connecting hole, through which the first conductive element 11 passes. The size of the connecting hole must precisely match the first conductive element 11 to ensure both the fixing effect and the insulation performance. After the first conductive element 11 is inserted into the connecting hole, it can be sealed and reinforced. Silicone insulating sealant is applied to both ends of the connecting hole, with a thickness of approximately 0.5 mm, to prevent external dust and oil from entering and affecting the insulation performance. The insulating fastener 13 is also fixedly connected to the second conductive element 12 by insulating screws.

[0047] Overall working principle:

[0048] When the metal conductive workpiece 200 is not placed, the first conductive element 11 and the second conductive element 12 are in an insulated state, and no conductive path is formed between them. The relay coil is not energized, its contacts are in an open state, and the electrical signal to start the switch cannot be transmitted to the thread rolling machine 100, so the equipment is in a standby state. At this time, the first conductive element 11 is connected to the grounding terminal of the relay through a wire, and the second conductive element 12 is directly grounded. Since the two are insulated, no current flows in the circuit.

[0049] When the operator places the conductive metal workpiece 200 on the support plate 121 of the second conductive element 12, since the first conductive element 11 is located on the support surface 1211 and its length direction is the same as that of the support plate 121, as long as the workpiece is placed correctly, it will simultaneously contact the conductive contact end 111 of the first conductive element 11 and the support surface 1211 of the second conductive element 12. The conductive metal workpiece 200 itself is conductive, which is equivalent to building a bridge between the first conductive element 11 and the second conductive element 12, forming a complete conductive circuit between the relay grounding terminal, the first conductive element 11, the conductive metal workpiece 200, the second conductive element 12, and the ground.

[0050] After the conductive circuit is formed, the current flows from the grounding terminal of the relay through the first conductive element 11, the metal conductive workpiece 200, and the second conductive element 12 to the ground, and current flows through the coil of the relay. According to the principle of electromagnetic induction, the relay coil generates an electromagnetic force after being energized. This electromagnetic force attracts the armature inside the relay, causing the contacts to move and close the originally open contacts.

[0051] After the relay contacts close, the electrical signal from the start switch of the thread rolling machine 100 is successfully transmitted to the power circuit of the machine. The control system of the thread rolling machine receives the electrical signal and triggers the corresponding drive mechanism to start working, such as starting the motor, which drives the thread rolling components to process the conductive metal workpiece 200. Throughout the processing, as long as the conductive metal workpiece 200 remains in contact with the first conductive element 11 and the second conductive element 12, the conductive circuit remains intact, the relay contacts remain closed, and the machine continues to operate.

[0052] When the processing is completed, the operator removes the metal conductive workpiece 200 from the support plate 121 of the second conductive element 12, the conductive path between the first conductive element 11 and the second conductive element 12 is broken, and the current in the relay coil disappears.

[0053] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An automatic starting device suitable for conductive metal workpieces, characterized in that, The device includes a first conductive component, a second conductive component, and a relay. The relay is connected to the device's start switch. The first conductive component is connected to the ground terminal of the relay. The second conductive component is grounded. The first conductive component and the second conductive component are insulated from each other. When the metal conductive workpiece comes into contact with the first conductive component and the second conductive component, the relay contacts close to conduct the electrical signal from the start switch to the device, thereby enabling the device to operate.

2. The automatic starting device for conductive metal workpieces according to claim 1, characterized in that, The first conductive element has a rod-shaped structure, and one end of the first conductive element serves as a conductive contact end that contacts the metal conductive workpiece.

3. The automatic starting device for conductive metal workpieces according to claim 2, characterized in that, The conductive contact end has a flat surface.

4. The automatic starting device for conductive metal workpieces according to claim 1, characterized in that, The second conductive element includes a support plate, the top surface of which forms a support surface for placing the metal conductive workpiece.

5. An automatic starting device suitable for conductive metal workpieces according to claim 4, characterized in that, The first conductive element is disposed on the support surface.

6. An automatic starting device suitable for conductive metal workpieces according to claim 4, characterized in that, The length direction of the first conductive element is the same as the length direction of the support plate.

7. An automatic starting device suitable for conductive metal workpieces according to claim 4, characterized in that, The second conductive element further includes a base plate, which is disposed at the bottom of the support plate, and the width of the base plate is greater than the width of the support plate.

8. An automatic starting device for conductive metal workpieces according to any one of claims 1-7, characterized in that, It also includes an insulating fastener, through which the first conductive element is fixed to the second conductive element.

9. An automatic starting device suitable for conductive metal workpieces according to claim 8, characterized in that, The insulating fastener is provided with a connection hole, and the first conductive element passes through the connection hole.

10. A tooth rolling machine, characterized in that, The automatic start-up device for conductive metal workpieces as described in any one of claims 1-9.

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