Novel error-proofing device for thread guide pad of thread rolling machine
By installing a copper plate circuit connected to an alarm on the wire rolling machine guide rail, the problem of existing devices being unable to identify over- or under-threaded pads is solved, achieving automatic alarm and improving product yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN ZHONGHANG FASTENING SYST CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-05-29
AI Technical Summary
Existing thread rolling machines cannot effectively identify and prevent bolts from having too many or too few spring washers, resulting in a high product defect rate. Furthermore, they cannot simultaneously identify and prevent combinations of spring washers and flat washers.
First and second copper plates are installed on the guide rail of the thread rolling machine. An alarm is connected to the circuit to ensure that bolts with properly threaded washers can pass smoothly. Bolts with too few or too many washers will trigger the alarm and remind the staff to handle the situation.
It enables automatic alarms for bolts with too many or too few washers, improving product yield, reducing the need for manual monitoring, and ensuring product quality.
Smart Images
Figure CN224294594U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bolt processing, and in particular to a novel anti-misoperation device for thread rolling machines. Background Technology
[0002] Thread rolling machines are specialized equipment for producing screws, and are mainly used in the fields of machinery manufacturing, automobiles, aerospace and mold processing.
[0003] There is a type of bolt product with a spring washer and a flat washer threaded through it. The outer diameter of the spring washer is smaller than that of the nut, while the outer diameter of the flat washer is larger than that of the nut. Additionally, the thickness of the spring washer is greater than that of the flat washer. This type of bolt, when processed using the thread rolling technique, may have issues such as insufficient or excessive washer threading, or even no washer at all, resulting in a high defect rate.
[0004] Chinese patent application CN201020547343.7, filed on September 26, 2010, discloses a thread rolling machine anti-error device for thread rolling. This device, by setting an error detection device on the guide rail, automatically separates screws without a washer from the error detection device on the guide rail before thread rolling, effectively reducing the scrap rate of the product. However, this device has the following drawbacks:
[0005] 1. This device can separate bolts without washers, and claims to "also squeeze out bolts with two or three washers, causing them to automatically fall off the guide rail." The applicant believes that the device cannot achieve this effect because: if two washers are used, the upper surface of the nut should be higher than the pressure plate. Since the bolt slides down the inclined guide rail by its own weight, subsequent bolts cannot squeeze out bolts with two or three washers from the guide rail. Therefore, this device is only suitable for preventing errors in products with a single bolt that has fewer (i.e., none) or more bolts. Furthermore, bolts with more than one bolt will get stuck on the guide rail, requiring constant monitoring of the guide rail status due to the lack of warning measures.
[0006] 2. If this device is used to prevent errors in bolt products that have both spring washers and flat washers, products with only fewer spring washers can pass through the error prevention device smoothly. Therefore, this device cannot identify products with only fewer spring washers.
[0007] Based on this, this application provides a novel pad-feeding error prevention device for a wire rolling machine to solve the above problems. Utility Model Content
[0008] This utility model aims to solve the technical problems existing in the prior art. To this end, this utility model provides a novel washer-insertion prevention device for thread rolling machines, which can effectively identify bolts with insufficient or excessive washer insertion.
[0009] The technical solution adopted by this utility model to solve its technical problem is:
[0010] A novel anti-error device for thread rolling machines is provided, comprising a guide rail disposed between an automatic thread rolling device and a thread rolling device for guiding the workpiece; a first copper plate and a second copper plate are insulatedly mounted above and below the guide rail via a first bracket and a second bracket, respectively; the distance between the lower surface of the first copper plate and the upper surface of the nut of a workpiece normally fitted with a spring washer and a flat washer is less than or equal to the thickness of the flat washer; the distance between the upper surface of the second copper plate and the lower surface of the rod of a workpiece normally fitted with a spring washer and a flat washer is less than or equal to the thickness of the flat washer; the first copper plate and the second copper plate are connected in series and connected to the positive terminal of a power module via a wire; the guide rail is connected to the negative terminal of the power module via a wire, and an alarm is connected in series on the wire.
[0011] In some alternative implementations, the alarm is an audible and visual alarm, which is fixedly mounted on the side of the guide rail by a mounting bracket.
[0012] In some alternative embodiments, copper studs are fixedly installed on both the first copper plate and the second copper plate for fixing to the first bracket and the second bracket, respectively.
[0013] In some optional embodiments, the first bracket includes a first adjusting block, a first screw, and a first insulating block. The first adjusting block is fixedly installed on the side of the guide rail by the first screw, and the first adjusting block is provided with a longitudinal waist-shaped groove for adjusting the height of the first copper plate. One end of the first insulating block is fixedly installed on the top of the first adjusting block by a fastener for mounting on the first copper plate.
[0014] In some optional embodiments, the second bracket includes a second adjusting block, a second screw, and a second insulating block. The second adjusting block is fixedly installed on the side of the guide rail by the second screw, and the second adjusting block is provided with a longitudinal waist-shaped groove for adjusting the height of the second copper plate. One end of the second insulating block is fixedly installed on the bottom of the second adjusting block by a fastener for mounting on the second copper plate.
[0015] In some optional embodiments, a rubber pad is also provided between the first adjusting block and the second adjusting block and the guide rail.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] This invention enables workpieces with properly fitted spring washers and flat washers to smoothly enter the thread rolling device for thread rolling. For workpieces with insufficient or no washers, the workpiece connects the second copper plate and the guide rail, forming a circuit consisting of the second copper plate, the guide rail, an alarm, and a power module. For workpieces with excessive washers, the workpiece connects the first copper plate and the guide rail, forming a circuit consisting of the first copper plate, the guide rail, an alarm, and a power module. Therefore, regardless of whether a workpiece has insufficient or excessive washers, the circuit will be connected, the alarm will sound, and the operator will be alerted to remove the defective workpiece in a timely manner, thereby improving the product yield. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:
[0019] Figure 1 This is a side view of the novel pad-feeding and error-prevention device for a wire rolling machine provided by this utility model;
[0020] Figure 2 This is a diagram showing the installation structure of the first copper plate and the second copper plate on the guide rail, as provided by this utility model.
[0021] The attached diagram lists the components represented by each number as follows:
[0022] 1—Guide rail, 2—First copper plate, 3—Second copper plate, 4—First bracket, 4.1—First adjusting block, 4.2—First screw, 4.3—First insulating block, 5—Second bracket, 5.1—Second adjusting block, 5.2—Second screw, 5.3—Second insulating block, 6—Power module, 7—Alarm, 8—Rubber pad. Detailed Implementation
[0023] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
[0024] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0025] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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.
[0026] Furthermore, the terms "first," "second," etc., used in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. The terms "installed," "connected," and "joined" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may 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 based on the specific circumstances.
[0027] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0028] Example 1
[0029] As attached Figure 1 As shown, this embodiment provides a novel anti-error device for thread rolling machines, including a guide rail 1 disposed between an automatic thread rolling device and a thread rolling device for workpiece movement; a first copper plate 2 and a second copper plate 3 are insulatedly mounted above and below the guide rail 1 via a first bracket 4 and a second bracket 5, respectively, wherein: the distance between the lower surface of the first copper plate 2 and the upper surface of the nut of a workpiece normally fitted with a spring washer and a flat washer is less than or equal to the thickness of the flat washer. This design allows workpieces normally fitted with spring washers and flat washers, as well as workpieces with fewer washers, to pass smoothly, while workpieces with more washers... The workpiece with the shim is blocked by the first copper plate and cannot pass through; the distance between the upper surface of the second copper plate 2 and the lower surface of the rod of the workpiece with a normal spring washer and flat washer is less than or equal to the thickness of the flat washer. This design allows workpieces with a normal spring washer, flat washer and multiple shims to pass through smoothly, while workpieces with fewer shims are blocked by the second copper plate and cannot pass through. The combination of the two enables workpieces with a normal spring washer and flat washer to pass through the guide rail smoothly into the thread rolling device, while workpieces with fewer or more shims cannot slide down into the thread rolling device.
[0030] To ensure timely detection and handling of workpieces with insufficient or excessive pads, this embodiment connects the first copper plate 2 and the second copper plate 3 in series and connects them to the positive terminal of the power module 6 via a wire. The guide rail 1 is connected to the negative terminal of the power module 6 via a wire, and an alarm 7 is connected in series on the wire. In this embodiment, the alarm 7 is preferably an audible and visual alarm, which is fixedly installed on the side of the guide rail 1 using a mounting bracket. This design enables the following: when a workpiece with excessive pads appears on the guide rail, the workpiece conducts through the first copper plate and the guide rail, forming a circuit consisting of the first copper plate, the guide rail, the alarm, and the power module, at which point the alarm emits an audible and visual alarm; when a workpiece with insufficient or no pads appears on the guide rail, the workpiece conducts through the second copper plate and the guide rail, forming a circuit consisting of the second copper plate, the guide rail, the alarm, and the power module, at which point the alarm emits an audible and visual alarm. Therefore, this embodiment does not require staff to monitor the status of the guide rail in real time; timely handling is only necessary when the alarm emits an audible and visual alarm.
[0031] Preferred options are listed below. Figure 2 As shown, copper studs are fixedly installed on both the first copper plate 2 and the second copper plate 3 in this embodiment, for fixing to the first bracket 4 and the second bracket 5 respectively. The copper studs can also serve as terminals for the copper plates.
[0032] The first bracket 4 includes a first adjusting block 4.1, a first screw 4.2, and a first insulating block 4.3. The first adjusting block is fixedly mounted to the side of the guide rail by the first screw, and the first adjusting block has a longitudinal slot for adjusting the height of the first copper plate. One end of the first insulating block is fixedly mounted to the top of the first adjusting block by a fastener for mounting the first copper plate. Specifically, the copper stud of the first copper plate is fixedly mounted on the first insulating block by a nut.
[0033] The second bracket 5 includes a second adjusting block 5.1, a second screw 5.2, and a second insulating block 5.3. The second adjusting block is fixedly installed on the side of the guide rail by the second screw, and the second adjusting block has a longitudinal slot for adjusting the height of the second copper plate. One end of the second insulating block is fixedly installed to the bottom of the second adjusting block by a fastener for mounting the second copper plate. Specifically, the copper stud of the second copper plate is fixedly installed on the second insulating block by a nut.
[0034] Preferably, in this embodiment, a rubber pad 8 is provided between the first adjusting block 4.1 and the second adjusting block 5.1 and the guide rail 1. The elasticity of the rubber pad can fix the adjusting block well on the guide rail, preventing the adjusting block from moving and affecting the position of the copper plate.
[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A novel anti-error device for thread rolling machines, comprising a guide rail disposed between an automatic thread rolling device and a thread rolling device for guiding the workpiece movement; characterized in that: A first copper plate and a second copper plate are insulatedly mounted above and below the guide rail via a first bracket and a second bracket, respectively. The distance between the lower surface of the first copper plate and the upper surface of the nut of the workpiece normally fitted with a spring washer and a flat washer is less than or equal to the thickness of the flat washer. The distance between the upper surface of the second copper plate and the lower surface of the rod of the workpiece normally fitted with a spring washer and a flat washer is less than or equal to the thickness of the flat washer. The first copper plate and the second copper plate are connected in series and connected to the positive terminal of the power module through a wire. The guide rail is connected to the negative terminal of the power module through a wire, and an alarm is connected in series on the wire.
2. The novel anti-misoperation device for thread rolling machines according to claim 1, characterized in that: The alarm is an audible and visual alarm, which is fixedly installed on the side of the guide rail by a mounting bracket.
3. The novel anti-misoperation device for thread rolling machines according to claim 1, characterized in that: Copper studs are fixedly installed on both the first copper plate and the second copper plate for fixing to the first bracket and the second bracket respectively.
4. The novel anti-misoperation device for thread rolling machines according to claim 3, characterized in that: The first bracket includes a first adjusting block, a first screw, and a first insulating block. The first adjusting block is fixedly installed on the side of the guide rail by the first screw, and the first adjusting block is provided with a longitudinal waist-shaped groove for adjusting the height of the first copper plate. One end of the first insulating block is fixedly installed on the top of the first adjusting block by a fastener for mounting on the first copper plate.
5. The novel anti-misoperation device for thread rolling machines according to claim 4, characterized in that: The second bracket includes a second adjusting block, a second screw, and a second insulating block. The second adjusting block is fixedly installed on the side of the guide rail by the second screw, and the second adjusting block is provided with a longitudinal waist-shaped groove for adjusting the height of the second copper plate. One end of the second insulating block is fixedly installed on the bottom of the second adjusting block by fasteners for mounting on the second copper plate.
6. The novel anti-misoperation device for thread rolling machines according to claim 5, characterized in that: Both the first and second adjusting blocks are provided with rubber pads between themselves and the guide rail.