TW396105B - Process and apparatus for controlling the degree of attrition of a sealing screw conveying a plasticized material - Google Patents

Abstract

The invention relates to a process for controlling the degree of attrition or wear of a sealing screw(8) conveying a plasticized material, in particular synthetic plastic material, against a resistance. The sealing screw (8) is bearingly supported within a screw housing (4). For this, the pressures of the conveyed material is measured at two locations spaced apart from each other, when seen in direction of conveyance. These two locations are disposed on both sides of a resistance body (12) towards which the sealing screw(8) conveys. The difference of the two measured values is used for indicating the degree of wear of the screw (5) or its housing, respectively. An apparatus suitable for performing this process is provided with an opening (18) which intersects the wall (20) of the housing (4) of the screw (5) in the region of its screw threads or in a region immediately neighboring thereto. A further opening (19) intersects the wall of the housing (4), the two openings (18, 19) being axially spaced apart from each other. To each one of the two openings (18, 19) a pressure sensor (22, 23) is connected.

Description

Ying V. Description of the invention (The present invention relates to a method of screw loss, specifically to control the conveyer of the sealed body that transports the plasticized material. The spaced-apart pitch in the -screw housing is located between the pattern and the second screw region: section. The connection channel of the material is connected to the internal channel of the screw channel carried by r, and the internal flow passes through it, which is used to deal with the connection channel connected to the connection channel, and the processing station, especially a filter station, if The screw and the connection channel are self-made = the impedance body is a screw segment shell that is set at the positions F and Λ that diverge from the sealed body I and can be used to perform the method. In addition, the present invention also relates to a kind of: ::;! R "supported in the screw housing, and-in 丨 they are provided with the best" two subject to wear, even the material of the screw of the material family, for example = two t have more or less grinding The main impurity is the kind of material in education. In the direction of the screw, This kind of wear situation of synthetic plastic material "will cause her to return the pressure in the following way: = 11 '' 'a' 3 in an uncontrolled way through the peripheral gap between the 蛘 浐, 颇, and 颇, And σ 由 螺 # and Xu Tizu are particularly undesirable; :: born through loss.; 磨 本 磨 知 疋 occurs as described earlier L ___ 3 1

Ying V. Description of the invention (The present invention relates to a method of screw loss, specifically to control the conveyer of the sealed body that transports the plasticized material. The spaced-apart pitch in the -screw housing is located between the pattern and the second screw region: section. The connection channel of the material is connected to the internal channel of the screw channel carried by r, and the internal flow passes through it, which is used to deal with the connection channel connected to the connection channel, and the processing station, especially a filter station, if The screw and the connection channel are self-made = the impedance body is a screw segment shell that is set at the positions F and Λ that diverge from the sealed body I and can be used to perform the method. In addition, the present invention also relates to a kind of: ::;! R "supported in the screw housing, and-in 丨 they are provided with the best" two subject to wear, even the material of the screw of the material family, for example = two t have more or less grinding The main impurity is the kind of material in education. In the direction of the screw, This kind of wear situation of synthetic plastic material "will cause her to return the pressure in the following way: = 11 '' 'a' 3 in an uncontrolled way through the peripheral gap between the 蛘 浐, 颇, and 颇, And σ 由 螺 # and Xu Tizu are particularly undesirable; :: It is a loss caused by the loss of life;; This grinding knows that 疋 occurs as described at the beginning L ___ 3 1 Material repair:

V. Description of the invention (,-, 7 and the sealing screw 8 are arranged in the same-the opening 3 material can be transported by the two steering 'for example. Yes / 1 y- ^ The mountain and the tired cup 8 have the same outer diameter of the thread, and: The advantage lies in the inner ridge used to support this -j. The worm body can have continuous and fixed 丨 ^ 5 is adjacent to the entrance opening At the end of the ring, the inside 1 has a right thread seal 14 and it has a lead of 5 and 椁 ^ 5. Compared with the running, it has a smaller pitch and a smaller diameter.

W order the dense rod: 'It is provided with-connecting channels, which are related to the screw sections 枓 ΓΓΓ parent in the shell at 6 and 7, respectively, and are transported by the screw sections 6, 7; , =? Flows in the direction of arrow 15. In the connection channel η == 二 = connection; the place where the material flowing through in the channel 13 is Jingcheng ’s 啦啦 16 & Τ㈣ 遽 Station 17:::! Filter can be used to remove impurities, especially Various types of consumer cooperation between employees of the Intellectual Property Bureau of the Ministry of Economic Affairs, Du printed = removed from the plasticized plastic material, u 'month / flood synthetic plastic material will be connected to the concentric body

= Within the section following the screw. However, it can be seen that 22 = J depends on the sealing function of the sealing screw 8. If the sealing function is not enough, for example, because of the wear of the sealing screw 8 or its housing, there will no longer be a good sealing effect between the two screw sections 6, 7 The materials contained in the shipment will not need to pass I Π This paper size applies Chinese National Standard (CNS) A4 specifications A7

A7 __ The pressure of the material is less than that in another measurement. The molten material that is considered may move along the extrusion head or toward the ^ 2nd exit. The seal through the sealing screw formed by the sealing screw is more burdened. ΛΛ & I, I, I. · ▲ 151 ^ I V. Description of the invention () The pressure of the material transported by the square f f and the material of the sealing screw is in front of the impedance 压力, and the pressure is the difference between the two pressures 値Can be used to show the loss of privacy. In this regard, the present invention is self-aware that as long as the screw guard works well, the pressure applied to the material transported by the force along the transport direction of the screw along the transport direction, that is, toward the impedance body, will gradually increase and begin. ^ If the pressure at the measurement position where the purely transported material first arrives is expressed by Pi, and the pressure measured at another position is expressed by p3 ', then if P2 is greater than P1, the function of the screw is Good. If these two pressures 値 Pi and P2 are equal, it can be understood that their losses have increased, and in general this represents a critical limit. If the change is smaller than Pi, the function of the screw will no longer be sufficient. Under normal operating conditions, that is, a well-sealed screw, the ~ j, part of the material in the screw section through the connecting channel will always be transported back in the direction toward the first two '. If the function of the sealing screw is good, the material pressure at the measuring position close to the sealing screw will always be equal to the pressure of the lining at another measuring position. If the second pressure Πΐ indicates that the sealing screw is running in a neutral manner, that is, no melt of synthetic plastic material will be transported by the sealing screw toward the first 'dry section'. If the right sound is desired. Hemorrhoid, Α Α + " 田 ',, MB ,, ^ The sealing function of the fused core seal screw # at the position close to the measurement position of the screw will no longer be sufficient, and (Please read the precautions on the back first (Save this page) 0

, 1T This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 male thin) Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs A7 B7 _____ 5. Description of the invention () will cause the unfinished materials in the final product, especially It is an unfiltered part 'because the sealing screw will form an undesired bypass path by which the material to be transported through the guide is passed to the processing station, especially to the filter. "Screw thread" can be understood at this point as the volute on the screw (Volution). ○ As a comparative measurement of synthetic plastic materials, it is known to have a smaller diameter behind the screw section. The pressure of the material is measured at two open positions in the tubular section. Since the diameter of this tubular section is fixed, the pressure at the position where the synthetic plastic material first reaches is greater than at other positions, which is determined by the Plastic Materials Division Caused by wall friction on the inner wall of the tubular section. These two measurements are not measured in the area of the screw thread or the screw housing, and these measurements are only used to determine the synthetic plastic materials The characteristics of the screw are not used to control the degree of wear of the screw. The device of the present invention for performing the method of the present invention is characterized in that two screw segments separated in the axial direction and preferably having the same diameter are formed by one Sealing screws, preferably also of the same diameter, are connected to each other for common rotation, the openings are in the threaded area of the screw section through which the material first passes or in the immediate vicinity of In the area, the opening of the screw body and the twisted body of the screw section t 'another opening is intersected with the shell of the wall of the casing ring rod, the two openings are measured in the axial direction from the screw section. The time series are separated from each other, where the impedance system is set here to separate

If——rj——. 丨 install ------- order ------ line (please read the note on the back before filling out this page). This paper size applies to Chinese national standards (CNS > A4 Specifications (210X297 male thin) A7

V. Description of the invention () A pressure sensor is connected to each of the two openings. The results shown by these pressure sensors m have been used to determine the degree of wear of the screw or its housing in the manner explained above. However, ㈣ 明 ㈣ 神 内 'It is better to be able to connect converters to these ink sensors, and they will send electrical signal comparison circuits to their output terminals, and their output terminals are connected to -Class instrument. The comparison circuit can continuously control the pressure difference between the cardiac muscles and display it with the instrument. In a manner known per se, the instrument can be made to be able to reduce the pressure difference to-predetermined 値 ::: issue-warning signal. This warning signal can be audible or visual = ’and can be used to immediately stop the operation of the plant if needed. According to another embodiment of the present invention, it is particularly advantageous if at least one of the two holes provided in the wall portion of the screw housing is provided near the shaft of the screw guard or sealed screw. The annular channel ^ diverged. The disadvantage is that the measurement result or the pressure sensor connected to each opening is not affected by the pulse. According to another embodiment of the present invention, the impedance body may be provided between the two openings of the child and can block the supplied material and be arranged on a screw connecting the screw section to the sealing screw. ^ Body on the axis. This can result in a simple structure, but this blocking ceremony can have multiple structures. The simplest embodiment includes that the child blocker is a dish-like object whose surrounding and the shell of the sealed screw are in accordance with the Chinese National Standard (CNS) M specification (21 × '297 mm). Printed by the Consumers Cooperative of the Central Standards Bureau of the Ministry A7 B7 V. Description of the invention () A narrow annular gap is defined between the wall sections. According to the present invention, another embodiment of the structure includes an annular groove provided on the periphery of the dish. This annular groove will cause disturbances on the plasticized material passing through the dish, which will increase the resistance of the material. Alternatively, in the spirit of the present invention, the obstruction may be a thread section, the thread of which has the same conveying direction as the thread of the sealing screw, but is finer. These fine threads cannot carry all the material supplied by the sealing screw ^ heavier than 2 threads. Therefore, the portion that is poor by the amount of sealing screw will "move, through this fine thread, which is 1¾, it will be squeezed through these fine threads, and the pressure at the end of the screw is increased. {这 成 雄 封In order to make your reviewing committee understand the purpose and characteristics of the present invention, the following specific examples are used, and the following descriptions will be made in detail-the detailed description is as follows: The illustration of the drawings of the present invention: A longitudinal sectional view of the first embodiment provided with a sealing screw; Figure 2 shows the first variation of the figure-the embodiment · Figure 2 shows another embodiment, and Figure 4 shows a comparison The large scale category shows the details in Figure 3. Explanation of Symbols: (Please read the notes on the back before filling in this page) β) ---- Order ----- J line ί! _ ^ 7 ^ 7 ^^ (21GX297 public epidemic A7 B7 V. Description of the invention (1 3 5 8 10 12 14 16 18, 19 21 24 > 25 31 > 32 34 36 38 Motor resistance body sealed thread processing station opening pressure pipeline ring channel converter display device soil groove rotation Circle 2 4 6 '7 9 11 13 15 17 20 22 ^ 23 26 33 35 37 Arrow screw housing Screw section shaft Arrow connection channel Arrow over the sensor wall pressure sensor blockage comparison circuit Annular clearance thread HI II ——- H ΙΊΊΙ II 1— Order I! I. [(Please read the precautions on the back before filling this page) The Consumer Cooperative of the Central Standards Bureau of the Ministry of Economy is printed on the device in Figure 1. The materials to be treated, especially the thermoplastic synthetic plastic materials containing impurities from waste sources, are first pulverized if necessary, and then sent into ^ 1 in the direction of arrow 2. Therefore, it will reach the inside of the screw housing 4 through the entrance opening 3 ... Inside it, a screw 5 is supported by a bearing. The screws 5 and 7, are separated from each other along the axial direction, and in its _; " _Sealing screw 8, the pitch of the thread is the same as that of the two sections 6 = the paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) Material repair:

V. Description of the invention (,-, 7 and the sealing screw 8 are arranged in the same-the opening 3 material can be transported by the two steering 'for example. Yes / 1 y- ^ The mountain and the tired cup 8 have the same outer diameter of the thread, and: The advantage lies in the inner ridge used to support this -j. The worm body can have continuous and fixed 丨 ^ 5 is adjacent to the entrance opening At the end of the ring, the inside 1 has a right thread seal 14 and it has a lead of 5 and 椁 ^ 5. Compared with the running, it has a smaller pitch and a smaller diameter.

W order the dense rod: 'It is provided with-connecting channels, which are related to the screw sections 枓 ΓΓΓ parent in the shell at 6 and 7, respectively, and are transported by the screw sections 6, 7; , =? Flows in the direction of arrow 15. In the connection channel η == 二 = connection; the place where the material flowing through in the channel 13 is Jingcheng ’s 啦啦 16 & Τ㈣ 遽 Station 17:::! Filter can be used to remove impurities, especially Various types of consumer cooperation between employees of the Intellectual Property Bureau of the Ministry of Economic Affairs, Du printed = removed from the plasticized plastic material, u 'month / flood synthetic plastic material will be connected to the concentric body

= Within the section following the screw. However, it can be seen that 22 = J depends on the sealing function of the sealing screw 8. If the sealing function is not enough, for example, because of the wear of the sealing screw 8 or its housing, there will no longer be a good sealing effect between the two screw sections 6, 7 Materials containing impurities contained in the shipment will not need to pass I Π This paper size is applicable to China National Standard (CNS) A4 specifications. The Ministry of Economic Affairs, Central Bureau of Standards, Staff Consumption Cooperation, Social Printing 5. Inventory (Passed Material Section ( (In the direction opposite to arrow 11) is returned to the housing of the screw guard section 6. If the function of the sealing screw 8 is good, the impedance body ^ 2 will make the material measured by the pressure sensor 23 The pressure p2 is always greater than the material pressure P1 measured by the pressure sensor 22. Therefore, its difference is a number from which the sealing condition of the sealing screw 8 can be known. If one pressure P2 and Pi are equal, then It means that the sealing screw moves in a neutral state, that is, no synthetic plastic material will be transported by the sealing rod 8 in the direction opposite to the arrow ^. If Pl is less than Pl, this means that Unfiltered synthetic plastic The object will pass through the sealing section formed by the sealing screw 8 in the direction of extrusion (arrow 11). In this way, it will be enamel-free to ensure its sealing function, and the final product will be contaminated in a necessary way. W 、 图The first one also shows the curve of the pressure ρ in the axial direction relative to the length of the screw 5 in the form of a graph. The solid line shows the pressure curve of the seal under ideal conditions, and the dashed line shows the pressure ： The plasticized synthetic plastic 过 is passed along the direction of the arrow ribs, and the situation when it is 2 rods. It can be seen that for-a good sealing screw ^ and ~, the sealing screw defends 8 of the resistance body U The conveying action will cause a pressure 値 at the upstream end of the sealing screw 浐 1 and the opening ls. The pressure is much larger than this, and the pressure at all other positions in the 厫, especially from the direction of the number U in the device. Those located in front of the opening 19. If the sealing screw 8 or the shell section around it is quite damaged, the pressure at the opening 19 will be reduced, and this pressure K will be 12 (please read the back first (Please fill in this ear for the matters needing attention) ^. The paper size applies the Chinese National Standard (CNS) A4 specification (210X2.97 mm printed by the Consumer Standards Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs and printed by A7 B7. V. Description of the invention) The pressure is greater than the pressure at the 18 holes, but less than. It is' an annular channel 24 or 25 is respectively provided in the area of the first opening and I9, and there is no thread at these channels, so that the measurement results of the two pressure sensors 22 and 23 Will not be affected by the pulsation caused by the screw thread. The two pressure sensors 22, 23 can be connected to the converters 31, 32 (Figure 1), these converters can be the pressure sensor 22, The measured pressure 値 is converted into an electric number 値. The outputs of these two converters W, 32 are connected to a comparison circuit 3 3 ', which in a known manner outputs the voltages output by converters 31, 32. The electrical signals are compared and the difference between the two signals 値 is displayed optically or acoustically on the display device 34. The signal obtained by the comparison circuit 33 can also be used to automatically stop the operation of the device when the loss degree is found to exceed a predetermined threshold. The embodiment in FIG. 2 differs from that in FIG. 1 only in that two ring-shaped grooves 36 are provided on the periphery of the impedance body ^ formed by a dish-shaped blocker =, and these grooves can flow into the gap. The material in π causes disturbances, and the flow resistance in the gap 35 increases. Otherwise, the devices in Figure 2 are the same as those in Figure 1. For simplicity, the components connected to the two pressure sensors 22, 23 are not shown in Fig. 2, and the processing station 16 is also not shown. Figure 1 also shows the pressure in the device in the form of a graph. It is the same. It shows the pressure of a good sealing screw 8 in a solid line, ·, 7, and the sealing screw is shown in a dotted line. 8 Condition under bad function 13 Paper size suitable for iiii ^ [cNS > ---:-(Please read the notes on the back before filling in this j, _ding. -Line. Description of the invention (A7 B7 status The embodiment of the plug == differs from the figure in that the obstruction is provided with a fine thread 37 on its periphery. The K or rotary circle of these life-sealing screws 8 have the same pitch square. ^^ 在 由 * In the opposite direction of No.5 and No.11, the whole material is sent along the direction of the screw Γ 中 / ΛΛ_ ^ 8. Therefore, the material in this material will be transported along the turning circle 38 (Figure 4) of the thin thread 37 to the left (Figure 3) Through the annular gap 35, one can say so that it passes through the fine thread π. This can cause resistance to the material sent by the sealing screw 8, so-if the sealing screw 8 works well, one will cause The pressure curve shown by the solid line in the graph, and if the compact sealing screw 8 or its housing section If there is a large abrasion situation, the pressure curve will become as indicated by the dotted line. The present invention has been described in detail above, but the above is only a preferred embodiment of the present invention, and should not be limited The fan garden for the implementation of the present invention, that is, all equal changes and modifications made according to the application of the fan garden of the present invention shall still be within the patent park covered by the patent of the present invention. House rules

Claims (1)

Scope of patent application 1. What is the surname? A method to control the loss of the sealing screw of the Plastic Material Delivery Department 'is to direct the synthetic plastic material toward the-resistance body carrier, and the loose sealing screw system peaks are supported in the screw housing and located on two shafts. Between the screw sections separated from each other, the thread advancement of the sealing screw is opposite to that of the two screw sections, wherein the exhaust system of the two screw sections is provided by a guide for the two screw sections. The connection channels of the material being transported are connected to each other, a place for processing the material flowing in the connection channel, in particular, a kind of filter #, which is connected to the connection channel of the child, and the impedance body It is arranged between the position where the sealing screw and the connection channel diverge from the screw section housing into which the material first flows, and is characterized in that it is respectively in front of the impedance body. The measurement is made by the last mentioned screw. Sample | & The pressure of the material being transported and the pressure of the material being transported by the sealing screw, and the difference between the two pressures can be used to indicate the degree of wear. 2 · —A device for performing the method according to item i of the patent application park, characterized in that two screw sections (6, 7) axially separated from each other are connected to each other by a sealing screw (8) Connected for common rotation, an opening Us) material first intersects through the wall () of the housing (4) of the screw section inside, the opening (18) is located in this screw section In the screw thread area or in the immediate area, another opening (19) intersects the wall (20) of the housing U) or the housing of the sealed screw (S). These two The openings (18, I9) are separated from each other when viewed from the axial direction of the screw section (6, 7). The impedance body (12) is set at 15 for this separation. The paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) *-\, ---; ---: ------------------ order --- line (please read the mouth first (Please fill in this page again, please fill out this page) Printed by tK Industrial Consumer Cooperatives, Central Bureau of Standards, Ministry of Economic Affairs Scope of patent application 1. What is the surname? A method to control the loss of the sealing screw of the Plastic Material Delivery Department 'is to direct the synthetic plastic material toward the-resistance body carrier, and the loose sealing screw system peaks are supported in the screw housing and located on two shafts. Between the screw sections separated from each other, the thread advancement of the sealing screw is opposite to that of the two screw sections, wherein the exhaust system of the two screw sections is provided by a guide for the two screw sections. The connection channels of the material being transported are connected to each other, a place for processing the material flowing in the connection channel, in particular, a kind of filter #, which is connected to the connection channel of the child, and the impedance body It is arranged between the position where the sealing screw and the connection channel diverge from the screw section housing into which the material first flows, and is characterized in that it is respectively in front of the impedance body. The measurement is made by the last mentioned screw. Sample | & The pressure of the material being transported and the pressure of the material being transported by the sealing screw, and the difference between the two pressures can be used to indicate the degree of wear. 2 · —A device for performing the method according to item i of the patent application park, characterized in that two screw sections (6, 7) axially separated from each other are connected to each other by a sealing screw (8) Connected for common rotation, an opening Us) material first intersects through the wall () of the housing (4) of the screw section inside, the opening (18) is located in this screw section In the screw thread area or in the immediate area, another opening (19) intersects the wall (20) of the housing U) or the housing of the sealed screw (S). These two The openings (18, I9) are separated from each other when viewed from the axial direction of the screw section (6, 7). The impedance body (12) is set at 15 for this separation. The paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) *-\, ---; ---: ------------------ order --- line (please read the mouth first Please fill in this page again, please fill in this page) Printed by the Central Standards Bureau of the Ministry of Economic Affairs tK Industrial Consumer Cooperatives S96105 A8 Βδ C8 D8 Printed by the Employees ’Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A force sensor (22, 23) is connected to each of the two openings (18, 1S). 3. The device according to item 2 of the patent application park, characterized in that converters (W, M) are connected to the pressure sensors (22, 23), and these converters can be on their output ends Send an electric signal to a comparison circuit (33>), and its output end is connected with a display device (34). 4 · According to the second or third item of the patent application park, it is characterized by being located in the screw housing At least one of the two openings (18, 19: in the wall portion (20) of the body (4) is a ring formed near the thread of the screw section (6) or the sealing screw (8) 5. The device diverging on the channel (24, 2S) according to item 2 of the patent application park, characterized in that the obstruction body (I2) is composed of an obstruction located between the two openings (18, (2 6), the obstruction is arranged on a shaft (9) that connects the screw sections (6, 7) to the sealing screw (8) 6 _ According to the scope of patent application No. 5 The device of item, characterized in that the obstruction (26) is a dish, and has a space between the dish and the wall portion (20) of the housing of the sealing screw (8). A narrow channel annular gap (35). 7. The device according to item 6 of the patent application park is characterized in that at least one annular groove (36) is provided on the periphery of the dish. 8. According to The device of the patent application Fanyuan No. 5 is characterized in that a block (37) is provided on the obstruction (26), and the thread has the same conveying direction as the thread of the sealing screw (8), but compared with 9. The device according to item 2 or item 5 of the patent application park, its characteristics ______ 16 This paper size is applicable to Chinese national standards < CNS) A4 size (210X297 mm) Please read I fee pack_ Printed by the Consumer Property Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs · B96105 cs 6. The scope of the patent application is that the two screw sections (6, 7) have the same diameter. 10. According to the second, third, and third patent scope The device of any one of item 5, item 6, characterized in that the sealing screw (8) has the same diameter as the two screw section (6, 7). (Please read the precautions on the back before filling this page ) This paper size applies to China National Standard (CNS) A4 (210X297 mm)