Plastic strip traction broken strip alarm device

Abstract

The utility model relates to the technical field of extruders, in particular to a plastic strip traction broken strip alarm device, which comprises an alarm device arranged at the upstream of a traction roller group, the alarm device comprises a support frame, the support frame is rotatably connected with lapping rods corresponding to the plastic strips in number, each plastic strip is lapped with one lapping rod, and the lapping rods are arranged on the support frame. A second contact is installed on the lapping rod, a supporting plate is fixedly connected to the position, below the lapping rod, of the supporting frame, first contacts corresponding to the second contact in a one-to-one mode are installed on the supporting plate, and an alarm assembly is connected between the first contacts and the second contacts in series. Once one plastic strip is broken, deviated or separated from the original position and loses the supporting effect on the corresponding lapping rod, the lapping rod rotates around the supporting shaft to swing downwards under the action of the gravity of the lapping rod, so that the second contact is in contact with the first contact to form a closed circuit, and the alarm assembly is immediately started to prompt an operator to handle the abnormity in time.

Description

TECHNICAL FIELD

[0001] The utility model relates to extruder technical field especially relates to a kind of plastic strip traction broken strip alarm device. BACKGROUND

[0002] Plastic masterbatch is usually through extrusion, cooling, air drying, traction and pelletizing and other multiple links in extrusion molding process, wherein the traction process is the important process link connecting cooling section and pelletizing section. Plastic strip formed after extrusion needs to be continuously and stably pulled to pelletizing mechanism by traction device after water tank cooling and air drying.

[0003] However, in actual production, due to unstable extrusion, insufficient cooling, traction fluctuation, strip material quality defects and other factors, plastic strip is prone to break in cooling section or traction section, causing "broken strip" phenomenon. Broken strip not only affects subsequent pelletizing process, but also may cause plastic strip to accumulate in the equipment, which needs manual processing and cleaning of the equipment in serious cases, increases downtime and reduces production efficiency.

[0004] When broken strip occurs, it is often found by manual observation, and system automatic alarm cannot be realized, which affects the corresponding speed of worker processing when broken strip problem occurs. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the shortcomings that, in the prior art, when broken strip occurs, it is often found by manual observation, and system automatic alarm cannot be realized, which affects the corresponding speed of worker processing when broken strip problem occurs, and provides a kind of plastic strip traction broken strip alarm device.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] A kind of plastic strip traction broken strip alarm device, the alarm device is arranged on the upstream of traction roller group, the alarm device includes support frame, the support frame is rotatably connected with the corresponding bar of one of the plastic strip quantity, one of the bar is lapped on each plastic strip, second contact is installed on the bar, support plate is fixedly connected on the support frame below the bar, first contact corresponding to second contact is installed on the support plate, alarm assembly is connected in series between first contact and second contact.

[0008] The support frame includes support shaft, fixed frame located at both ends of support shaft, the support shaft is fixed with ground through support frame or the rack of traction roller group, the support plate and bar are installed on support shaft.

[0009] The bar includes fixedly connected or integrally formed rotating connection part, bar part, the rotating connection part is rotatably connected with the support shaft, the bar part is lapped on plastic strip, and the second contact is fixed on the bar part.

[0010] The rotating connecting part is a cylinder, which is sleeved on the supporting shaft and rotatingly connected with the supporting shaft.

[0011] The rotating connecting part is a C-shaped rod, which is buckled on the supporting shaft and rotatingly connected with the supporting shaft.

[0012] The end of the supporting rod is rotatingly connected with a roller, and the supporting rod is supported on the plastic strip through the roller.

[0013] The alarm component comprises an alarm, a battery, a first contact and a second contact, which are connected in series.

[0014] The alarm is a buzzer or an audible and light alarm.

[0015] The plastic strip traction broken strip alarm device has the advantages that when the device is initially operated, the plastic strip normally enters from the traction roller group, the roller of the supporting rod is supported above each plastic strip, the supporting rod maintains a certain angle under the support of the plastic strip, the second contact is in a separated state with the first contact below, and at this time, the alarm component is in an open circuit non-working state. Once a certain plastic strip is broken, deviated or separated from the original position, loses the supporting effect on the corresponding supporting rod, the supporting rod rotates around the supporting shaft and swings down under the action of its own gravity, the second contact contacts the first contact and forms a closed circuit, the alarm component is immediately started, and the operator is prompted to handle the abnormality in time. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0017] Figure 2 It is a plastic strip normal traction state structure schematic view of the utility model;

[0018] Figure 3 It is an alarm component electric connection structure schematic view of the utility model;

[0019] Figure 4 It is a plastic strip broken strip state structure schematic view of the utility model.

[0020] In the figure: traction roller group 1, supporting shaft 2, fixed frame 3, rotating connecting part 4, supporting rod part 5, roller 6, supporting plate 7, first contact 8, second contact 9, alarm 10, battery 11, supporting rod 12, supporting frame 13. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0022] Referring to Figures 1-4 A plastic strip traction broken strip alarm device, the alarm device is arranged on the upstream of the traction roller group 1, the alarm device comprises a support frame 13, the support frame 13 is rotatably connected with a plurality of corresponding lugs 12, each plastic strip is connected with a lug 12, the support frame 13 is rotatably connected with a plurality of corresponding lugs 12, each plastic strip is connected with a lug 12, thereby realizing independent monitoring of each plastic strip, the lug 12 is provided with a second contact 9, the support frame 13 is fixedly connected with a support plate 7 below the lug 12, the support plate 7 is provided with a first contact 8 corresponding to the second contact 9, the first contact 8 and the second contact 9 are connected in series with an alarm assembly, the first contact 8 and the second contact 9 form an electrical on-off structure, when the lug 12 is lifted by the strip in the normal lapping plastic strip state, the second contact 9 and the first contact 8 are in the disconnected state; once the plastic strip is broken or falls off, the lug 12 is lowered under the action of gravity, the second contact 9 is lowered and contacts the first contact 8, forming a closed circuit.

[0023] When the device is initially operated, the plastic strip normally enters from the traction roller group 1, the roller 6 of the lug 12 supports above each plastic strip, the lug 12 is kept at a certain angle under the support of the plastic strip, the second contact 9 is separated from the first contact 8 below, at this time the alarm assembly is in the open circuit non-working state.

[0024] Once a certain plastic strip is broken, deviated or separated from the original position, loses the support effect on the corresponding lug 12, the lug 12 is lowered around the support shaft 2 under the action of its own gravity, so that the second contact 9 contacts the first contact 8 and forms a closed circuit, the alarm assembly is immediately started, prompting the operator to handle the exception in time.

[0025] The support frame 13 comprises a support shaft 2 and a fixed frame 3 at both ends of the support shaft 2, the support shaft 2 is fixed to the ground through the support frame 13 or fixed to the rack of the traction roller group, the support plate 7 and the lug 12 are installed on the support shaft 2.

[0026] The lug 12 comprises a rotating connection part 4 and a lug part 5, the rotating connection part 4 is rotatably connected with the support shaft 2, the lug part 5 is lapped on the plastic strip, and the second contact 9 is fixed on the lug part 5.

[0027] The rotating connection part 4 is a cylinder, the cylinder is sleeved on the support shaft 2 and rotatably connected with the support shaft 2, the cylinder structure is sleeved on the support shaft 2, which can realize stable rotation and is suitable for high-frequency operation scene.

[0028] The rotating connection part 4 is a C-shaped rod, the C-shaped rod is buckled on the support shaft 2 and rotatably connected with the support shaft 2, the C-shaped rod structure can realize convenient buckling, and the disassembly and maintenance are more convenient, and users can select different structure forms according to specific needs.

[0029] The end of the clamping rod 12 is rotationally connected with a roller 6, the clamping rod 12 is supported on the plastic strip through the roller 6, the roller 6 can roll along with the plastic strip during movement, effectively reducing the friction between the plastic strip and the roller 6, preventing damage to the plastic strip, and maintaining the stable clamping state of the clamping rod part 5.

[0030] Reference Figure 3 The alarm assembly comprises an alarm 10 and a battery 11, the alarm 10 and the battery 11, the first contact 8 and the second contact 9 are connected in series to form a circuit.

[0031] The alarm 10 is a buzzer or an audible and visual alarm, which is used to issue a prompt when the circuit is closed.

[0032] During the whole operation, the plastic strip runs through the traction roller set 1: the clamping rod 12 is clamped on each plastic strip through the roller 6 to realize individual monitoring; the first contact 8 on the supporting palm plate 7 corresponds to the second contact 9 on the clamping rod part 5; the plastic strip supports the clamping rod during operation, the contacts remain disconnected, and the alarm is in a non-working state; when any plastic strip is broken or falls off, the clamping rod 12 is lowered, the second contact 9 contacts the first contact 8; the circuit is closed, the alarm 10 is activated, and an alarm is issued; the operator stops the machine in time according to the alarm information, checks and handles the fault.

[0033] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can obtain technical solutions, concepts and designs according to the technical scheme and the concept of the present application within the technical range disclosed by the present application, by equivalent replacement or change, which should be covered within the protection scope of the present application.

Claims

1. A plastic strip breakage alarm device, characterised in that, The alarm device is arranged upstream of the traction roller group (1), and comprises a support frame (13), a clamping rod (12) corresponding to the number of plastic strips is rotatably connected to the support frame (13), one clamping rod (12) is clamped on each plastic strip, a second contact (9) is installed on the clamping rod (12), a support plate (7) is fixed below the clamping rod (12), a first contact (8) corresponding to the second contact (9) is installed on the support plate (7), and an alarm assembly is connected in series between the first contact (8) and the second contact (9).

2. A plastic strip pull-breakage alarm device according to claim 1, characterized in that The support frame (13) comprises a support shaft (2) and fixed frames (3) located at both ends of the support shaft (2), the support shaft (2) is fixed to the ground through the support frame (13) or fixed to the rack of the traction roller group, and the support plate (7) and the clamping rod (12) are installed on the support shaft (2).

3. A plastic strip pull-breakage alarm device according to claim 2, wherein The clamping rod (12) comprises a fixed or integrally formed rotating connecting portion (4) and a clamping rod portion (5), the rotating connecting portion (4) is rotatably connected to the support shaft (2), and the clamping rod portion (5) is clamped on the plastic strip, and the second contact (9) is fixed on the clamping rod portion (5).

4. A plastic strip pull-breakage alarm device according to claim 3, wherein The rotating connecting portion (4) is a cylinder, the cylinder is sleeved on the support shaft (2) and rotatably connected to the support shaft (2).

5. A plastic strip pull-breakage alarm device according to claim 3, wherein The rotating connecting portion (4) is a C-shaped rod, the C-shaped rod is buckled on the support shaft (2) and rotatably connected to the support shaft (2).

6. A plastic strip pull-breakage alarm device according to any one of claims 1-5, characterized in that The clamping rod (12) is rotatably connected with a roller (6) at the end, and the clamping rod (12) is supported on the plastic strip through the roller (6).

7. A plastic strip pull-breakage alarm device according to any one of claims 1-5, characterized in that The alarm assembly comprises an alarm (10) and a battery (11), and the alarm (10), the battery (11), the first contact (8) and the second contact (9) are connected in series.

8. A plastic strip pull-breakage alarm device according to claim 7, characterised in that The alarm (10) is a buzzer or an audible and light alarm.

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