CN203031954U

CN203031954U - Device for continuously detecting melting depth of plastic surface

Info

Publication number: CN203031954U
Application number: CN 201320072865
Authority: CN
Inventors: 李鹏; 陈斌
Original assignee: Huachuang Tianyuan Industrial Developing Co Ltd
Current assignee: Huachuang Tianyuan Industrial Developing Co Ltd
Priority date: 2013-02-05
Filing date: 2013-02-05
Publication date: 2013-07-03
Anticipated expiration: 2023-02-05

Abstract

The utility model relates to a device for continuously detecting melting depth of a plastic surface, and is mainly used for solving the problems that continuous detection and the direct measurement and control of the melting depth can not be realized in the existing melting depth detection of the plastic surface. The device is characterized in that a scratch awl or a pinch roller (5) is contacted with the surface of a basement layer (1), an information collection system (4) is connected with a data processing system (2), and the data processing system (2) is connected with a forming machine (6). The device provided by the utility model has the characteristics that the structure is simple, a controlling target is accurate, the operation is convenient, the continuity is good, and the continuous detection and automatic feedback control in a productive process are realized.

Description

The device of continuous detecting frosting depth of fusion

Technical field

The utility model relates to technical field of plastic, specifically a kind of apparatus and method of the continuous detecting frosting heat fused degree of depth.

Background technology

In plastic products (for example plastic tube or plastic composite pipe, section bar or sheet material) processing and using, be extensive use of welding (welding) technology, different workpieces (or different surfaces of same workpiece) is welded.For example, when using winding shaping process to make plastic tube (or its multiple tube), band (or sheet material) spiral twines and forms tube wall, and the edge of adjacent turn is close to each other or overlaps.Adopt mode of heatings such as hot gas, radiation or roll-in, surface temperature to be welded is brought up in the setting range, and welding surface is compressed mutually, namely obtain continuous weld seam after the typing.As the case may be, can apply the scolder that adds fusion to solder side (weld seam), also can not add scolder, utilize the melt of face of weld fully.At present, carat pipe, steel are moulded composite screw bellows, plastic-steel spirally-wound pipe etc., have all adopted above-mentioned winding welding procedure.

For guaranteeing weld seam welding quality, must reliable temperature and the state of controlling solder side.At present, the equipment of above-mentioned welding (welding) process and employing thereof all is that the temperature by direct or indirect control face of weld guarantees welding quality.For example, detect the temperature of thermal source (hot gas, hot-rolling or radiation source), control the temperature of face of weld indirectly.This method is subjected to factor affecting such as environmental condition, face of weld size, translational speed, can not obtain the true temperature of face of weld, and is lower to the control degree of target.And for example, by measuring the temperature (for example adopting noncontact infrared measurement of temperature instrument) of face of weld, thereby realize the direct measurement to target component, the control degree is higher relatively.But surface temperature just influences a single index of welding quality, and in influencing the factor of welding quality, the molten state of face of weld---particularly depth of fusion---is only the pacing factor of welding quality.In aforementioned control technology, no matter directly or indirectly control the temperature of face of weld, true molten state that all can not the exosyndrome material surface.Particularly in continuous flow procedure, because the plastics poor thermal conductivity, even reach same surface temperature, because the heat transfer asynchronism(-nization), the depth of fusion that can realize can there were significant differences.If surperficial fusion penetration shallow excessively (even not having fusion penetration) is easy to cause dry joint.This weld seam peels off that to detect the plasticity that shows in the test very poor tearing, and long-term use may show brittle break under live load, for the safety in the product application life is buried huge hidden danger.So the temperature of only controlling face of weld indirectly or directly can not guarantee final welding quality.

Guarantee final welding quality, must detect and control the depth of fusion of face of weld simultaneously.In discontinuous production process, can observe or measure the depth of fusion of face of weld by manual type, perhaps the process conditions of determining by test (temperature, heat time heating time etc.) guarantee depth of fusion indirectly.But the former can't satisfy the requirement of continuous detecting control, and the latter then can not realize direct measurement and the control to depth of fusion.

Summary of the invention

In order to overcome the above-mentioned deficiency of prior art, the utility model provides a kind of apparatus and method of continuous detecting frosting depth of fusion, this apparatus structure is simple, the control target is accurate, easy to operate, has the advantages that continuity is good, can realize production process continuous detecting and automatic feedback control.

The technical solution of the utility model is: a kind of device of continuous detecting frosting depth of fusion, comprise basic unit, scriber, Information Collection System, make-up machine, scriber is fixed on the basic unit outside, and the scriber front end is provided with heat source system, described scriber contacts with substrate surface, Information Collection System links to each other with data handling system, and data handling system connects make-up machine.

Described scriber is replaced by pinch roller.

Described Information Collection System is a kind of of displacement transducer, load cell or imageing sensor.

The utlity model has following beneficial effect: owing to take such scheme, on material-to-be-heated surface, can directly obtain the degree of depth (degree) information of surface melting according to bar number or its corresponding most advanced and sophisticated height value of cut (or impression).Above-mentioned information can be used as feedback signal, with thermal source or motion interlock, realizes the on-line continuous Detection ﹠ Controling of face of weld molten state, thereby guarantees final welding quality.This apparatus structure is simple, and is easy to operate, is not only applicable to continuous production and the moulding of goods such as plastic tube (or multiple tube of plastics and other material), section bar, also is applicable to adopt pipe fitting, flange or other goods that twine melting welding, single-piece making.

Description of drawings

Fig. 1 is schematic diagram of the present utility model;

Fig. 2 is the structural representation of scriber;

Fig. 3 is the structural representation of pinch roller;

Fig. 4 is that information of the present utility model is collected and analysis principle figure;

Fig. 5 utilizes the utility model method to detect the surface melting degree of depth, is applied to the schematic diagram of on-line continuous control.

1-basic unit among the figure, 2-data handling system, 3-heat source system, 4-Information Collection System, 5-scriber, 6-make-up machine, 7-winding layer.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing:

Extremely shown in Figure 5 by Fig. 1, a kind of device of continuous detecting frosting depth of fusion, comprise section bar basic unit 1, scriber 5, Information Collection System 4, make-up machine 6, scriber 5 is fixed on basic unit 1 outside, and scriber 5 front ends are provided with heat source system 3, namely with respect to the tubing rotation direction, heat source system 3 is aimed at the place ahead of scriber 5.Heat source system 3 can be hot gas, radiation source or hot-rolling, with section bar surface heating to be wound.There is the needle point of different length on scriber 5 surfaces, and its needle point height requires to be designed to different height according to frosting shape and depth of fusion, and as a1, b1 among Fig. 2, scriber 5 stitch quantity and density are determined according to the width range of meter face.Scriber 5 and basic unit's 1 surperficial contact, Information Collection System 4 links to each other with data handling system 2, and data handling system 2 connects make-up machines 6, and make-up machine 6 is wrapped in winding layer 7 on the section bar.Information Collection System 4 can or be imageing sensor for displacement transducer, load cell.

Fig. 4, schematic diagram when Fig. 5 installs work for this, after treating heat source system 3 heating, scriber 5 is pressed into basic unit 1 by load, Information Collection System 4 carries out signal to be adopted, and pass to data handling system 2 after the signal of gathering identified, 2 pairs of data of data handling system are handled, judge whether fusion penetration meets the requirements, if meet the requirements, then make-up machine 6 drives winding layer 7 continuation windings, if undesirable, then controlling 6 pairs of parameters of make-up machine adjusts, its method can be to adjust power of heat source, temperature, or adjust the tubing velocity of rotation, thus make the surface melting degree of depth reach requirement.

Above-mentioned scriber 5 also can be replaced by pinch roller, pinch roller is cylindrical structural, its periphery distribution sharp-pointed flange (or detent projection) more than 2, flange (projection) requires design that the discrepancy in elevation is arranged according to measuring surface configuration and depth of fusion, as a2, b2, c2 among Fig. 3, projection quantity and density are determined according to face width and arts demand.Its operation principle and process are identical with scriber.

A kind of method of continuous detecting frosting depth of fusion,

A, with hot gas, radiation source or hot-rolling with pure moulding or overlap joint (or butt joint) the surface heating of composite steel-plastic belt material (section bar, sheet material) to be wound, and enter Wiring apparatus continuously;

B, the scriber 5 that will apply certain load are placed on the heating back and prepare on the surface of welding;

C, determine the degree of depth of frostings fusing by Information Collection System 4, its method has following several:

1., displacement method: scriber 5 is connected with displacement transducer, puts (or being pressed into) degree of depth under by measuring displacement signal calculating, obtain the surface melting degree of depth;

2., load method; Scriber 5 is connected with load sensor, measures scriber and be pressed into the needed load size of frosting certain depth, judge whether the surface melting degree of depth reaches requirement;

3., image method: gather the cut of scriber 5, the needle point height number of quantity, continuity and each bar vestige correspondence by vestige is determined width and the depth bounds of frosting melting zone;

D, the data of being collected by Information Collection System among 2 couples of step c of data handling system 4 are put in order, above-mentioned signal is handled by special algorithm (as pid algorithm), and form the close loop control circuit of " measuring-feedback-control-measure again " jointly with control module, control make-up machine 6, by adjusting the mode of power of heat source, temperature or area of heating surface translational speed, make the surface melting degree of depth reach the control target.

Claims

1. the device of a continuous detecting frosting depth of fusion, comprise basic unit (1), scriber (5), Information Collection System (4), make-up machine (6), scriber (5) is fixed on basic unit (1) outside, and scriber (5) front end is provided with heat source system (3), it is characterized in that: described scriber (5) contacts with basic unit (1) is surperficial, Information Collection System (4) links to each other with data handling system (2), and data handling system (2) connects make-up machine (6).

2. the device of continuous detecting frosting depth of fusion according to claim 1, it is characterized in that: described scriber (5) is replaced by pinch roller.

3. the device of continuous detecting frosting depth of fusion according to claim 1 and 2 is characterized in that: described Information Collection System (4) is a kind of for displacement transducer, load cell or imageing sensor.