Broken bar alarm device of extruder
The extruder breakage alarm device, which combines a grating transmitter and a grating receiver with a temperature sensing component, solves the problem of false alarms in existing devices, and achieves more accurate material breakage identification and rapid production recovery.
Patent Information
- Application Number
- CN202511662431.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-13
- Publication Date
- 2026-01-16
AI Technical Summary
Existing extruder material breakage detection alarm devices are prone to false alarms due to obstruction of the infrared transmitter and receiver light path, affecting normal production.
The system uses a combination of a grating transmitter and a grating receiver with a temperature sensing component to determine the material shortage situation by combining the light path obstruction and the water temperature change in the tank. The alarm component will issue an alarm when the light path is obstructed and the water temperature reaches a preset value.
It effectively prevents false alarms, improves the accuracy and sensitivity of material breakage identification, restores working conditions quickly, and has a simple structure.
Smart Images
Figure CN121340592A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of auxiliary equipment of extruders, and particularly relates to an extruder broken strip alarm device. BACKGROUND
[0002] An extruder is a core device for material plasticizing, mixing and forming in the plastic, rubber and food industries. Its core function is to convert solid materials (such as particles and powders) into a uniform molten state through mechanical force (screw rotation) and heat energy (external heating), and then extrude them into a specific shape (such as pipe, plate, cable sheath, etc.) through a die. During the operation of the extruder, the stability of the production process may be disturbed by various factors (such as the uniformity of raw materials, the content of impurities, the stability of head pressure, etc.), resulting in the disconnection of the extruded material strip. At this time, the produced material strip cannot be pulled to the rear-end processing procedure by a pelletizer, and will directly fall below the extruder outlet, thus unable to carry out normal production. Therefore, a broken material identification alarm device needs to be arranged at the head of the extruder to remind the staff to handle the broken strip anomaly in a timely manner.
[0003] At present, in the existing broken material identification alarm device, only an infrared emitter and an infrared receiver are used to identify whether the extruder has broken material. As long as the light path between the infrared emitter and the infrared receiver is blocked, an alarm will be issued, which is easy to cause false triggering and affect the normal production of the extruder. SUMMARY
[0004] In view of the above problems, the present application discloses an extruder broken strip alarm device to overcome the above problems or at least partially solve the above problems.
[0005] In order to achieve the above purpose, the present application adopts the following technical scheme: The present application discloses an extruder broken strip alarm device, which comprises: A support assembly comprises a support frame, the support frame extends in a horizontal direction and has two parallel and spaced first support arms and second support arms; A light sensing assembly comprises a grating emitter and a grating receiver, the grating emitter is arranged on the inner side of the first support arm, and the grating receiver is arranged on the inner side of the second support arm and corresponds to the grating emitter; A temperature sensing assembly comprises a water tank and a temperature measuring element, the water tank is arranged below the light sensing assembly, and the temperature measuring element is arranged in the water tank to detect the water temperature change in the water tank; An alarm assembly is electrically connected to the grating receiver and the temperature measuring element respectively, and is used to issue an alarm when the light path between the grating emitter and the grating receiver is blocked and the water temperature in the water tank reaches a preset value.
[0006] Further, the temperature sensing assembly further comprises a partition plate and an elastic member; The partition plate is provided with a plurality of holes, and is located in the water tank. The elastic member is supported between the bottom of the water tank and the partition plate, so that the partition plate is suspended in the water tank. The temperature sensing element is arranged on the partition plate.
[0007] Further, the temperature sensing assembly further comprises a partition plate and an elastic member; The air cooling assembly comprises an air cooling pipeline and an air cooling source. The air cooling source is connected with the air inlet of the air cooling pipeline, and is used for providing compressed air into the air cooling pipeline. The air outlets of the air cooling pipeline respectively face the grating emitter and the grating receiver.
[0008] Further, the support frame is made of a hollow pipe. The air cooling pipeline and the circuit of the light sensing assembly are located in the hollow pipe.
[0009] Further, the inner side of the first support arm and the inner side of the second support arm are respectively provided with a receiving groove. The grating emitter is located in the receiving groove on the first support arm, and the grating receiver is located in the receiving groove on the second support arm. The receiving groove is provided with a baffle made of transparent material at the opening.
[0010] Further, the light sensing assembly comprises a plurality of grating emitters and a plurality of grating receivers. The plurality of grating emitters are arranged in a row along the horizontal direction, and the plurality of grating receivers are arranged in a row along the horizontal direction.
[0011] Further, the light sensing assembly comprises a plurality of grating emitters and a plurality of grating receivers. The plurality of grating emitters are arranged in at least two rows along the horizontal direction. The grating emitters in each row are arranged at intervals, and the grating emitters in each row are arranged at intervals along the vertical direction. The plurality of grating receivers are arranged in at least two rows along the horizontal direction. The grating receivers in each row are arranged at intervals, and the grating receivers in each row are arranged at intervals along the vertical direction.
[0012] Further, the support frame further comprises a first support leg, a second support leg, a first vertical rod, a second vertical rod and a horizontal rod. The first support leg and the second support leg are arranged in parallel along a horizontal direction, and the distance between the first support leg and the second support leg is greater than the width of the extruder base, the front end of the first support leg is fixedly connected with the lower end of the first vertical rod and one end of the horizontal rod respectively, the upper end of the first vertical rod is fixedly connected with the rear end of the first support arm, the front end of the second support leg is fixedly connected with the lower end of the second vertical rod and the other end of the horizontal rod respectively, and the upper end of the second vertical rod is fixedly connected with the rear end of the second support arm.
[0013] Further, the support assembly further comprises a support base; The support base comprises a first vertical support rod, a second vertical support rod, a first horizontal support rod, a second horizontal support rod, a first bearing and a second bearing; the first vertical support rod and the second vertical support rod are respectively arranged on the left side and the right side of the extruder base, the middle part of the first horizontal support rod is rotatably connected with the upper end of the first vertical support rod through the first bearing, and the middle part of the second horizontal support rod is rotatably connected with the upper end of the second vertical support rod through the second bearing. The support frame further comprises a first support leg, a second support leg and a horizontal rod; the front end of the first support leg is fixedly connected with one end of the horizontal rod, the front end of the second support leg is fixedly connected with the other end of the horizontal rod, the rear end of the first support arm and the rear end of the second support arm are both fixedly connected with the horizontal rod, the first support leg is detachably connected with the first horizontal support rod, and the second support leg is detachably connected with the second horizontal support rod.
[0014] Further, the alarm assembly comprises an audible and visual alarm; The audible and visual alarm is electrically connected with the grating receiver and the temperature measuring element respectively.
[0015] The advantages and beneficial effects of the present application are as follows: In the broken bar alarm device, the grating transmitter and the grating receiver are arranged to realize the light sensing identification of the broken material, the water tank and the temperature measuring element are arranged to identify the temperature of the broken material, the light path between the grating transmitter and the grating receiver is blocked, and the alarm is issued when the water temperature in the water tank reaches the preset value, so that the false triggering of the alarm can be effectively prevented; and the broken bar alarm device has the advantages of simple structure, high sensitivity and fast recovery of working conditions. BRIEF DESCRIPTION OF DRAWINGS
[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to be limiting in any respect. Wherever possible, like reference numerals have been used throughout the drawings to refer to like parts and elements. In the drawings: Figure 1 is a top view of the extruder broken strand alarm device in embodiment 1 of the present application; Figure 2 is a left view of the extruder broken strand alarm device in embodiment 1 of the present application; Figure 3 is a front view of the support base in embodiment 1 of the present application; Figure 4 is a left view of the extruder broken strand alarm device in embodiment 2 of the present application; Figure 5 is a perspective view of the support assembly in embodiment 2 of the present application; Figure 6 is a perspective view of the support frame in embodiment 2 of the present application; Figure 7 is a perspective view of the support base in embodiment 2 of the present application; Figure 8 is a perspective view of the support frame in embodiment 3 of the present application.
[0017] In the drawings: 1, support assembly; 11, support frame; 111, first support arm; 112, second support arm; 113, accommodating groove; 114, first support leg; 1141, first hook; 115, second support leg; 116, first vertical rod; 117, second vertical rod; 118, horizontal rod; 119, roller; 12, support base; 121, first vertical support rod; 122, second vertical support rod; 123, first horizontal support rod; 124, second horizontal support rod; 125, first bearing; 126, second bearing; 127, first limiting block; 128, first limiting post; 129, second limiting post; 2, light sensing assembly; 21, grating emitter; 22, grating receiver; 23, aviation plug; 3, temperature sensing assembly; 31, water tank; 32, temperature measuring element; 4, alarm assembly; 41, audible and visual alarm; 5, air cooling assembly; 51, air cooling pipeline; 52, air cooling source; 6, extruder base; 7, extruder head. DETAILED DESCRIPTION
[0018] In order to make the objects, technical solutions and advantages of the present application clearer, the following will be combined with the drawings in the present application to make a clear and complete description of the technical solutions in the present application. Obviously, the described embodiments are a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.
[0019] The terms "first", "second" in the description and claims of the present application can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally means that the front and rear associated objects are in an "or" relationship.
[0020] In the description of the present application, 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" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0021] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0022] In order to facilitate the understanding and description of the technical solutions of the present application, it is specified that Figure 2 The right side of Figure 2 is the front side, and the left side of is the rear side.
[0023] The following will be combined with the drawings to specifically describe the technical solutions provided by the embodiments of the present application.
[0024] Embodiment 1 An extruder broken bar alarm device is provided in this embodiment, such as Figure 1 and Figure 2As shown, the extruder broken strip alarm device comprises a support assembly 1, a light sensing assembly 2, a temperature sensing assembly 3 and an alarm assembly 4.
[0025] The support assembly 1 comprises a support frame 11; the support frame 11 extends in a horizontal direction and has two parallel and spaced first and second support arms 111 and 112; the width between the first and second support arms 111 and 112 is greater than the width of the extruder head 7.
[0026] It should be noted that when the extruder broken strip alarm device is applied to the extruder, the support frame 11 is arranged below the extruder head 7, and the first and second support arms 111 and 112 are located on the left and right sides of the extruder head 7.
[0027] The light sensing assembly 2 comprises a grating transmitter 21, a grating receiver 22 and an aviation plug 23; the grating transmitter 21 and the grating receiver 22 are connected with an external power source through the aviation plug 23, and the aviation plug 23 has the advantages of high reliability, strong environmental adaptability, convenient maintenance and the like. The reaction time of the inductive grating is in the order of milliseconds, which can greatly reduce the time waste caused by reaction judgment. Specifically, the grating transmitter 21 is arranged on the inner side of the first support arm 111 (the side of the first support arm 111 close to the second support arm 112), the grating receiver 22 is arranged on the inner side of the second support arm 112 (the side of the second support arm 112 close to the first support arm 111), and the grating receiver 22 corresponds to the grating transmitter 21, of course, the positions of the grating transmitter 21 and the grating receiver 22 can also be transposed. Since the support assembly 1 is arranged below the extruder head 7, and the grating transmitter 21 and the grating receiver 22 are arranged on the first and second support arms 111 and 112 respectively, the light path formed between the grating transmitter 21 and the grating receiver 22 is just located below the extruder head 7, and when the strip extruded by the extruder head 7 is broken and falls, it can just touch the light beam between the grating transmitter 21 and the grating receiver 22.
[0028] Specifically, the light sensing assembly 2 is based on the principle of light beam induction, and is a set of devices containing the grating transmitter 21 and the grating receiver 22. The grating transmitter 21 will emit multiple infrared or laser beams, and when any one or more beams are blocked by an object, the grating receiver 22 does not receive the corresponding beam, the light sensing assembly 2 will give a signal.
[0029] The temperature sensing assembly 3 comprises a water tank 31 and a temperature measuring element 32; the water tank 31 is arranged below the light sensing assembly 2, i.e. in use, the water tank 31 is located below the extruder head 7, and the water tank 31 contains an appropriate amount of water, and the broken material falls directly into the water tank 31, so that the broken material is collected by the water tank 31 to prevent additional pollution of the broken material; the temperature measuring element 32 is arranged in the water tank 31 and used to detect the water temperature change in the water tank 31; in this embodiment, the water tank 31 is a square structure made of metal, which facilitates the cleaning of the material strip in the water tank 31; the size of the water tank 31 is larger than the extrusion end of the extruder head 7, and a certain amount of water is stored in the water tank 31; the amount of water should not be too much, otherwise the water temperature rise is limited, and the temperature measuring element 32 cannot identify the occurrence of the broken material condition through the water temperature change. Of course, in other embodiments, the water tank 31 can also be made of other materials and shapes.
[0030] It can be understood that the water in the water tank 31 not only provides a transmission space for the temperature of the material strip, but also cools the falling material strip to prevent the material strip from sticking to the water tank 31, thereby facilitating the cleaning of the material strip. In addition, the temperature measuring element 32 is preferably a temperature measuring thermocouple; the hot end (working end) of the temperature measuring thermocouple can directly contact the measured object, and the core sensing element is a thin metal wire (usually 0.5 mm ~ 2 mm in diameter), which has small heat capacity, high heat conduction efficiency, short response time, and can quickly capture temperature changes. When the material strip falls into the water tank 31, the water temperature will rise due to the temperature of the material strip, and when the temperature rises to the preset temperature within the designed preset time (which can be set), a signal is sent.
[0031] The alarm assembly 4 is electrically connected with the grating receiver 22 and the temperature measuring element 32, respectively, for sending an alarm when the light path between the grating transmitter 21 and the grating receiver 22 is blocked and the water temperature in the water tank 31 reaches the preset value, which can be set according to the specific environment. The alarm assembly 4 comprises an audible and visual alarm 41; the audible and visual alarm 41 is electrically connected with the grating receiver 22 and the temperature measuring element 32, respectively, and when the audible and visual alarm 41 receives a signal, it will send a sound and a light to remind, so that the alarm is more eye-catching.
[0032] It can be understood that the alarm assembly 4 will only send an alarm when both conditions (condition one: the light path between the grating transmitter 21 and the grating receiver 22 is blocked; condition two: the water temperature in the water tank 31 reaches the preset value) are met, which can effectively prevent the occurrence of false alarms caused by false triggering.
[0033] The working principle of the extruder broken strip alarm device in this embodiment is as follows: When the extruder head 7 is running normally, the material strip is pulled by the pelletizer to the rear-end process. At this time, the material strip passes above the light sensing assembly 2 due to the pulling effect of the pelletizer, and does not block the light path between the grating emitter 21 and the grating receiver 22. When the material strip breaks, the material strip falls due to gravity, enters between the grating emitter 21 and the grating receiver 22, and blocks the light beam. After the grating receiver 22 does not receive the light beam, the light sensing assembly 2 sends a signal to the alarm assembly 4. At the same time, the broken material strip falls into the water tank 31. Due to the high temperature of the material strip, the water temperature in the water tank 31 rises. The temperature change is detected by the temperature measuring thermocouple, and another signal is sent to the alarm assembly 4 under the set condition (for example, the temperature rises by 2°C within 10 seconds). When the two signals are triggered at the same time, the system judges that the material strip breaks, the alarm assembly 4 sends an alarm to remind the operator that the material breaks.
[0034] When the operator gets the alarm, he or she rushes to the extruder head 7 to connect the broken material strip to the pelletizer, so that the broken material strip anomaly is restored, and does not block the light path between the grating emitter 21 and the grating receiver 22. The grating receiver 22 can receive all the light beams. The light sensing assembly 2 stops sending signals to the alarm assembly 4. The alarm assembly 4 stops the alarm, and the production line returns to normal. There is no need to immediately process the cleaning step due to the material strip falling on the device, and the recovery condition is faster.
[0035] In the embodiment, as shown in Figure 1 The extruder broken material strip alarm device further comprises a forced air cooling assembly 5.
[0036] Specifically, the forced air cooling assembly 5 comprises a forced air cooling pipeline 51 and a forced air cooling source 52. The forced air cooling source 52 is connected with the air inlet of the forced air cooling pipeline 51, and is used to provide compressed air into the forced air cooling pipeline 51. The air outlets of the forced air cooling pipeline 51 respectively face the grating emitter 21 and the grating receiver 22, so as to realize forced air cooling and heat dissipation of the grating emitter 21 and the grating receiver 22, and make them at a suitable working temperature. The forced air cooling source 52 can be a compressed air cylinder or a fan, and can provide a pressure of 6 bar ~ 8 bar, so as to stably output air, take away the hot air on the inductive grating, and ensure the working condition requirements of the inductive grating.
[0037] In addition, the support frame 11 is made of a hollow pipe, as shown in Figure 1As shown, the air cooling pipeline 51 and the lines of the light sensing assembly 2 are located in the hollow tube, which not only protects the air cooling pipeline 51 and the lines of the light sensing assembly 2, but also makes the appearance of the extruder broken strand alarm device more regular. Specifically, the support frame 11 is made of a square tube, and of course can also be made of a round tube. In addition, the first support arm 111 and the second support arm 112 can be hollowed out according to the size of the grating emitter 21 and the grating receiver 22, and the grating emitter 21 and the grating receiver 22 are installed in the hollowed-out part to achieve the installation and placement of the grating emitter 21 and the grating receiver 22, so that they are more hidden and avoid damage during work.
[0038] In addition, the light sensing assembly 2 includes a plurality of grating emitters 21 and a plurality of grating receivers 22.
[0039] Specifically, as shown in Figure 1 and Figure 2 , the plurality of grating emitters 21 are arranged at intervals and form a row in the horizontal direction, and the plurality of grating receivers 22 are arranged at intervals and form a row in the horizontal direction, that is, a row of grating emitters 21 is arranged on the first support arm 111, and a row of grating receivers 22 is arranged on the second support arm 112, so that a plurality of light beams are formed between the first support arm 111 and the second support arm 112. This structure can not only enable the light sensing assembly 2 to work normally after individual grating receivers 22 are damaged, but also enable the extruder broken strand alarm device to be applicable to different models of extruder heads 7.
[0040] In addition, as shown in Figures 1 to 3 , the support assembly 1 further includes a support base 12.
[0041] Specifically, the support base 12 comprises a first vertical support rod 121, a second vertical support rod 122, a first horizontal support rod 123, a second horizontal support rod 124, a first bearing 125 and a second bearing 126; wherein the first vertical support rod 121 and the second vertical support rod 122 can be metal square tubes, channel steels or square steels, etc. and are high-strength materials capable of supporting a certain mass. The first vertical support rod 121 and the second vertical support rod 122 are respectively used for being fixed on the left and right sides of the extruder base 6 and can be connected and fixed with the extruder base 6 through welding or bolts. The middle part of the first horizontal support rod 123 is rotatably connected with the upper end of the first vertical support rod 121 through the first bearing 125, that is, the outer ring of the first bearing 125 is interference-fitted with the bearing seat on the first vertical support rod 121, and the inner ring of the first bearing 125 is interference-fitted with the rotating shaft on the first horizontal support rod 123, so that the first horizontal support rod 123 can rotate by a certain angle along the vertical plane, and the plane formed by the rotation of the first horizontal support rod 123 is parallel to the extrusion direction of the extruder head 7. The middle part of the second horizontal support rod 124 is rotatably connected with the upper end of the second vertical support rod 122 through the second bearing 126, that is, the outer ring of the second bearing 126 is interference-fitted with the bearing seat on the second vertical support rod 122, and the inner ring of the second bearing 126 is interference-fitted with the rotating shaft on the second horizontal support rod 124, so that the second horizontal support rod 124 can rotate by a certain angle along the vertical plane, and the plane formed by the rotation of the second horizontal support rod 124 is parallel to the extrusion direction of the extruder head 7. The front lower end of the first horizontal support rod 123 is provided with a first limiting block 127, so that when the first limiting block 127 abuts against the first vertical support rod 121, the first horizontal support rod 123 is in the horizontal direction. The front lower end of the second horizontal support rod 124 is provided with a second limiting block, so that when the second limiting block abuts against the second vertical support rod 122, the second horizontal support rod 124 is in the horizontal direction. The first horizontal support rod 123 and the second horizontal support rod 124 are both hollow tubes, and the first horizontal support rod 123 and the second horizontal support rod 124 can be a length of square tube.
[0042] The support frame 11 in this embodiment not only includes the first support arm 111 and the second support arm 112, but also includes the first support leg 114, the second support leg 115, the first vertical rod 116, the second vertical rod (not shown in the figure) and the cross rod 118; the front end of the first support leg 114 is fixedly connected with one end of the cross rod 118, the rear end of the first support leg 114 is formed with the first hook 1141, the front end of the second support leg 115 is fixedly connected with the other end of the cross rod 118, the rear end of the second support leg 115 is formed with the second hook (not shown in the figure), the lower end of the first vertical rod 116 is fixedly connected with the cross rod 118, the upper end of the first vertical rod 116 is fixedly connected with the rear end of the first support arm 111, the lower end of the second vertical rod is fixedly connected with the cross rod 118, the upper end of the second vertical rod is fixedly connected with the rear end of the second support arm 112, the first support leg 114 can be inserted into the first horizontal support rod 123 from the front end of the first horizontal support rod 123, and the second support leg 115 can be inserted into the second horizontal support rod 124 from the front end of the second horizontal support rod 124.
[0043] The support frame 11 and the support base 12 adopt a detachable structure design, when the broken strip alarm is needed to be used, the support frame 11 is inserted into the support base 12, the aviation plug 23 is connected with the power supply, the air cooling pipeline 51 is connected with the air cooling source 52, and then the broken strip alarm can be directly used; when the support frame 11 needs to be removed, the support frame 11 can be directly removed from the support base 12.
[0044] It should be noted that when the first support leg 114 can be inserted into the first horizontal support rod 123 from the front end of the first horizontal support rod 123, and the second support leg 115 can be inserted into the second horizontal support rod 124 from the front end of the second horizontal support rod 124, the first hook 1141 can be hooked on the rear end of the first horizontal support rod 123, and the second hook can be hooked on the rear end of the second horizontal support rod 124, so as to prevent the support frame 11 from being separated from the support base 12, and due to the action of gravity, the front end of the first horizontal support rod 123 and the front end of the second horizontal support rod 124 will be downwardly rotated, so that the first limiting block 127 abuts against the first vertical support rod 121, the second limiting block abuts against the second vertical support rod 122, and then the first support arm 111 and the second support arm 112 are in the horizontal direction. And the first horizontal support rod 123 and the second horizontal support rod 124 are installed in a rotating mode, which is convenient for the support frame 11 to be inserted into the first horizontal support rod 123 and the second horizontal support rod 124.
[0045] Of course, in other embodiments, the support frame 11 does not include the first vertical rod 116 and the second vertical rod 117, and the rear end of the first support arm 111 and the rear end of the second support arm 112 are directly fixedly connected with the cross rod 118. At this time, the first vertical support rod 121 and the second vertical support rod 122 need to be arranged to have a higher horizontal height, so as to ensure that the light sensing assembly 2 is close to the extruder head 7.
[0046] Embodiment 2 The difference between this embodiment and embodiment 1 is that, as shown in Figures 4 to 7 the first horizontal support rod 123 and the second horizontal support rod 124 are U-shaped along the cross section perpendicular to the length, the first support leg 114 is capable of being inserted into the first horizontal support rod 123, the second support leg 115 is capable of being inserted into the second horizontal support rod 124, the first support leg 114 and the second support leg 115 are both provided with first pin holes, the first horizontal support rod 123 and the second horizontal support rod 124 are both provided with second pin holes corresponding to the first pin holes, when the first support leg 114 is located in the first horizontal support rod 123 and the second support leg 115 is located in the second horizontal support rod 124, the first support leg 114 and the first horizontal support rod 123 are detachably connected by inserting the pin into the second pin hole and the first pin hole in sequence, and the second support leg 115 and the second horizontal support rod 124 are detachably connected.
[0047] Furthermore, the front side of the first vertical support rod 121 is fixed with a first limiting column 128, so that when the upper end of the first limiting column 128 abuts against the first horizontal support rod 123, the first horizontal support rod 123 is in the horizontal direction; the front side of the second vertical support rod 122 is fixed with a second limiting column 129, so that when the upper end of the second limiting column 129 abuts against the second horizontal support rod 124, the second horizontal support rod 124 is in the horizontal direction. The first limiting column 128 and the second limiting column 129 have the same function as the first limiting block and the second limiting block in embodiment 1, and are both used for limiting the rotation of the first horizontal support rod 123 and the second horizontal support rod 124.
[0048] In addition, as shown in Figure 5 and Figure 6 the inner side of the first support arm 111 and the inner side of the second support arm 112 are both provided with accommodating grooves 113, the grating emitter 21 is located in the accommodating groove 113 on the first support arm 111, the grating receiver 22 is located in the accommodating groove 113 on the second support arm 112, and the groove opening of each accommodating groove 113 is provided with a baffle (not shown in the figure) made of transparent material, which can protect the grating emitter 21 and the grating receiver 22 without blocking the light beam, so as to enable the grating emitter 21 and the grating receiver 22.
[0049] The grating emitter 21 and the grating receiver 22 can be fixed by inserting pins or bolts after being inserted into the accommodating grooves 113, which facilitates the disassembly of the grating emitter 21 and the grating receiver 22, and further facilitates the maintenance or replacement of the grating emitter 21 and the grating receiver 22.
[0050] Embodiment 3 The difference between this embodiment and embodiment 1 is that, as shown in Figure 8 the support frame 11 includes a first support leg 114, a second support leg 115, a first vertical rod 116, a second vertical rod 117 and a horizontal rod 118.
[0051] Specifically, the first support leg 114 and the second support leg 115 are arranged in parallel along the horizontal direction, and the distance between the first support leg 114 and the second support leg 115 is greater than the width of the extruder base 6, the front end of the first support leg 114 is fixedly connected with the lower end of the first vertical rod 116 and one end of the horizontal rod 118 respectively, the upper end of the first vertical rod 116 is fixedly connected with the rear end of the first support arm 111, the front end of the second support leg 115 is fixedly connected with the lower end of the second vertical rod 117 and the other end of the horizontal rod 118 respectively, the upper end of the second vertical rod 117 is fixedly connected with the rear end of the second support arm 112, and the bottom of the first support leg 114 and the bottom of the second support leg 115 are both provided with a roller 119. The structure of the support frame 11 is arranged, when the broken strip alarm is needed to be used, the support frame 11 is pushed into the extruder head 7, and when the broken strip alarm is needed to be moved out, the support frame 11 is pushed away, which is more convenient to use.
[0052] In addition, the light sensing assembly includes a plurality of grating emitters and a plurality of grating receivers.
[0053] The plurality of grating emitters are arranged into at least two rows along the horizontal direction, the grating emitters in each row are arranged at intervals, and the grating emitters in each row are arranged at intervals along the vertical direction, the plurality of grating receivers are arranged into at least two rows along the horizontal direction, the grating receivers in each row are arranged at intervals, and the grating receivers in each row are arranged at intervals along the vertical direction, that is, one grating emitter in the lower row is located between two grating emitters in the upper row, and one grating receiver in the lower row is located between two grating receivers in the upper row. The structure arrangement can make the grating emitters and grating receivers more densely arranged, thereby making the light beams between the first support arm and the second support arm more densely arranged, preventing the broken material from passing between the adjacent two light beams. Moreover, the arrangement of the multiple rows can also enable the extruder broken strip alarm device to still work normally when some grating receivers are damaged.
[0054] Embodiment 4 The difference between this embodiment and embodiment 1 is that the temperature sensing assembly further includes a partition plate and an elastic member.
[0055] Specifically, a plurality of holes are formed in the partition plate, and the partition plate is located in the water tank, the elastic member is supported between the tank bottom of the water tank and the partition plate, so that the partition plate is suspended in the water tank, and the temperature measuring element is arranged on the partition plate. When water is injected into the water tank, the water level needs to overflow the partition plate. The elastic member is a spring, and preferably four springs are arranged at the four corners of the partition plate.
[0056] When a small amount of broken material falls on the partition, the broken material can warm the water above the partition, and the temperature change is sensed by the temperature sensing element, and the broken material condition is identified, at this time, the amount of broken material on the partition is limited, and the water above the partition can still effectively cool the broken material, as the amount of broken material on the partition increases, the broken material presses the partition downward due to gravity, the partition moves downward to overcome the elastic force of the elastic element, and more water enters the upper part of the partition to cool the broken material, so that the broken material does not stick to the partition, at this time, the amount of broken material is large, and the water on the partition can still be warmed significantly, which can be sensed by the temperature sensing element.
[0057] In summary, in the broken strip alarm device, the grating transmitter and the grating receiver are used to realize the light sensing identification of the broken material, and the water tank and the temperature sensing element are used to identify the temperature of the broken material, so that the alarm component is blocked in the light path between the grating transmitter and the grating receiver, and the water in the water tank reaches the preset value to issue an alarm, which can effectively prevent the false triggering of the alarm; and the broken strip alarm device has the advantages of simple structure, high sensitivity, fast recovery and the like.
[0058] The above is only a specific embodiment of the present application, and those skilled in the art can make other improvements or modifications on the basis of the above embodiment under the above teaching of the present application. Those skilled in the art should understand that the above specific description is only to better explain the purpose of the present application, and the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. An extruder broken strand alarm apparatus characterized by, include: A support assembly includes a support frame; the support frame extends horizontally with two parallel and spaced-apart first and second support arms. A light-sensing component includes a grating emitter and a grating receiver; the grating emitter is disposed on the inner side of the first support arm, and the grating receiver is disposed on the inner side of the second support arm and corresponds to the grating emitter; A temperature sensing component includes a water tank and a temperature measuring element; the water tank is disposed below the light sensing component, and the temperature measuring element is disposed inside the water tank for detecting changes in the water temperature inside the water tank; An alarm component is electrically connected to the grating receiver and the temperature measuring element, respectively, and is used to issue an alarm when the optical path between the grating transmitter and the grating receiver is blocked and the water temperature in the tank reaches a preset value.
2. The extruder broken bar alarm apparatus of claim 1 wherein, The temperature sensing component also includes a partition and an elastic element; The partition has multiple holes and is located inside the water tank. The elastic element is supported between the bottom of the water tank and the partition, so that the partition is suspended inside the water tank. The temperature measuring element is disposed on the partition.
3. The extruder broken bar alarm of claim 1 wherein, Also includes: An air-cooled assembly includes an air-cooled pipeline and an air-cooled source; the air-cooled source is connected to the air inlet of the air-cooled pipeline and is used to supply compressed air into the air-cooled pipeline, and the air outlet of the air-cooled pipeline is respectively facing the grating transmitter and the grating receiver.
4. The extruder broken bar alarm of claim 3 wherein, The support frame is made of hollow tube, and the air-cooling pipeline and the wiring of the light-sensing component are both located inside the hollow tube.
5. The extruder broken bar alarm apparatus of claim 1 wherein, Both the inner sides of the first support arm and the inner sides of the second support arm have receiving slots. The grating emitter is located in the receiving slot on the first support arm, and the grating receiver is located in the receiving slot on the second support arm. Each receiving slot has a transparent baffle at its opening.
6. The extruder broken bar alarm apparatus of claim 1 wherein, The light-sensing component includes a plurality of grating emitters and a plurality of grating receivers; The plurality of grating emitters are spaced apart and arranged in a row along the horizontal direction, and the plurality of grating receivers are spaced apart and arranged in a row along the horizontal direction.
7. The extruder broken bar alarm apparatus of claim 1 wherein, The light-sensing component includes a plurality of grating emitters and a plurality of grating receivers; The plurality of grating emitters are arranged in at least two rows along the horizontal direction, with the grating emitters in each row spaced apart and staggered in the vertical direction. The plurality of grating receivers are arranged in at least two rows along the horizontal direction, with the grating receivers in each row spaced apart and staggered in the vertical direction.
8. The extruder broken bar alarm apparatus of claim 1 wherein, The support frame also includes a first support leg, a second support leg, a first upright, a second upright, and a crossbar; The first support leg and the second support leg are arranged in parallel along a horizontal direction, and a distance between the first support leg and the second support leg is greater than a width of the extruder base, a front end of the first support leg is fixedly connected with a lower end of the first vertical rod and one end of the horizontal rod respectively, an upper end of the first vertical rod is fixedly connected with a rear end of the first support arm, a front end of the second support leg is fixedly connected with a lower end of the second vertical rod and the other end of the horizontal rod respectively, an upper end of the second vertical rod is fixedly connected with a rear end of the second support arm, and a bottom of the first support leg and a bottom of the second support leg are both provided with a roller.
9. The extruder broken bar alarm apparatus of claim 1 wherein, The support assembly further comprises a support base; The support base comprises a first vertical support rod, a second vertical support rod, a first horizontal support rod, a second horizontal support rod, a first bearing and a second bearing; the first vertical support rod and the second vertical support rod are respectively arranged on left and right sides of the extruder base, a middle part of the first horizontal support rod is rotatably connected with an upper end of the first vertical support rod through the first bearing, and a middle part of the second horizontal support rod is rotatably connected with an upper end of the second vertical support rod through the second bearing; The support frame further comprises a first support leg, a second support leg and a horizontal rod; a front end of the first support leg is fixedly connected with one end of the horizontal rod, a front end of the second support leg is fixedly connected with the other end of the horizontal rod, rear ends of the first support arm and the second support arm are both fixedly connected with the horizontal rod, the first support leg is detachably connected with the first horizontal support rod, and the second support leg is detachably connected with the second horizontal support rod.
10. The extruder broken bar alarm apparatus of any one of claims 1-9, wherein, The alarm assembly comprises an audible and visual alarm; The audible and visual alarm is electrically connected with the grating receiver and the temperature measuring element respectively.