Scram protection device for PVC open mill

Abstract

The utility model relates to a PVC open mill sudden stop protection device which comprises a base, supporting columns are fixedly installed on the tops of the two sides of the base, stop levers are installed at the top ends of the supporting columns, the two ends of the stop levers are movably connected with the supporting columns through rotating shafts, and limiting devices used for limiting the stop levers are further installed on the rotating shafts. A limiting device is fixedly installed on the top of the supporting column and pressed and fixed through a locking nut, a sensor support is further fixedly installed on the outer wall of the top of the supporting column, an infrared sensor is fixedly installed at the end of the sensor support, and the infrared sensor is electrically connected with the controller. According to the sudden stop protection device for the PVC open mill, the movable stop lever and the infrared sensor are installed at the top end of the supporting column, when the infrared sensor detects that the stop lever falls, an electric signal is transmitted to the controller, and the controller controls the device to stop running, so that personnel are prevented from being drawn into the device; and the running safety of the open mill is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of film production equipment, in particular to an emergency stop protection device for a PVC mixing mill. Background Art

[0002] PVC film is a film material made of polyvinyl chloride. This material is widely used in many industries due to its excellent properties such as high transparency, good chemical resistance, waterproofness, and flame retardancy.

[0003] The open mill is one of the main production equipment for PVC film. Its working principle is to shear, mix and plasticize the material through two rotating rollers. The material is fed between the two rollers. As the rollers rotate, the material is mixed and plasticized under the action of shear force.

[0004] When the open mill is refining the material, it needs to heat the material. Therefore, the temperature of the roller of the open mill is very high. People who get close to it are easily burned by the high temperature and easily dragged into the equipment, posing a major safety hazard. The existing treatment method is generally to set up fences and guardrails outside the open mill, but it is still difficult to reduce the risks brought by people getting close to it.

[0005] Therefore, there is a urgent need for a safe PVC mixing mill emergency stop protection device. Summary of the Invention

[0006] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a PVC mixing mill emergency stop protection device with strong safety.

[0007] The purpose of this utility model is achieved in this way:

[0008] A PVC mixing mill emergency stop protection device includes a base, pillars are fixedly installed on the top of both sides of the base, a baffle is installed on the top of the pillar, and the two ends of the baffle are movably connected to the pillar through a rotating shaft, a limiting device for limiting the baffle is also installed on the rotating shaft, and the limiting device is tightened and fixed by a locking nut, a sensor bracket is also fixedly installed on the outer wall of the top of the pillar, an infrared sensor is fixedly installed on the end of the sensor bracket, and the infrared sensor is electrically connected to a controller, and a supporting device for supporting the baffle is also installed on the pillar.

[0009] Preferably, the pillar is a columnar structure with a "U"-shaped cross-section, the baffle rod is an inverted "U"-shaped in the main view, and the two ends of the baffle rod are inserted into the grooves of the pillar, and the rotating shaft is movably connected to the pillar and the baffle rod by a through-hole manner.

[0010] Preferably, the limiting device includes a limiting rod, connecting plates are fixedly provided at both ends of the limiting rod, and the other end of the connecting plate is sleeved and installed on the rotating shaft, and the connecting plate is tightened and fixed by a locking nut, and a support plate is also installed between the two connecting plates, one end of the support plate is movably connected to the connecting plate, and a plurality of evenly distributed limiting plates are fixed on the outer wall on the back side of the pillar groove, and the other end of the support plate is in contact with the limiting plate.

[0011] Preferably, sliding grooves are provided on the outer walls on both sides of the pillar, and the supporting device is movably connected to the sliding grooves.

[0012] Preferably, the supporting device includes a support plate, which is installed in the groove of the pillar, and a sliding rod is installed at each end of the support plate, and the two ends of the sliding rod pass through the slide groove and are slidably connected thereto, and a bottom rod is also installed at the bottom of the slide groove, and guide columns are installed at both ends of the slide rod, and the guide columns are connected with the slide rod and the bottom rod, and the two ends of the guide columns are limited by nuts, and a spring is installed on the guide column, and the two ends of the spring are respectively in contact with the slide rod and the bottom rod.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model provides an emergency stop protection device for a PVC mixing mill. A movable barrier rod is installed at the top of a pillar and an infrared sensor is installed on the pillar. When the barrier rod is hit by a human collision, it rotates and falls. The infrared sensor is used to sense the falling process. The infrared sensor is electrically connected to a controller. When the infrared sensor detects that the barrier rod has fallen, it transmits an electrical signal to the controller, and the controller controls the device to stop running, thereby avoiding people being drawn into the equipment and greatly improving the safety of the mixing mill during operation.

[0015] 2. The utility model provides an emergency stop protection device for a PVC mixing mill. A limit device is installed on the top of a pillar. The limit rod limits the stop rod to prevent the stop rod from falling in the opposite direction. The limit angle can be adjusted by rotating the connecting plate to meet different usage requirements. A support plate is provided on the limit device to support the limit rod, thereby improving the firmness and stability during limiting.

[0016] 3. The utility model provides an emergency stop protection device for a PVC mixing mill. A supporting device for supporting the barrier rod is installed on the pillar. When the barrier rod falls, the support plate plays a role of limiting and supporting the barrier rod to prevent the barrier rod from falling further, and the barrier rod plays a blocking role to prevent people from getting closer, and the spring plays a buffering role on the support of the support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1The utility model is a three-dimensional structural diagram of an emergency stop protection device for a PVC mixing mill.

[0018] Figure 2 The utility model is a side view of the structure of an emergency stop protection device for a PVC mixing mill.

[0019] Figure 3 The utility model is a structural schematic diagram of the limit device of the emergency stop protection device of a PVC mixing mill.

[0020] Figure 4 The utility model is a structural schematic diagram of the supporting device of the emergency stop protection device of a PVC mixing mill.

[0021] Among them: base 1, pillar 2, stop rod 3, rotating shaft 4, limit device 5, limit rod 5.1, connecting plate 5.2, support plate 5.3, limit plate 5.4, locking nut 6, sensor bracket 7, infrared sensor 8, controller 9, supporting device 10, support plate 10.1, sliding rod 10.2, bottom rod 10.3, guide column 10.4, spring 10.5. DETAILED DESCRIPTION

[0022] See also Figures 1 to 4 The utility model relates to an emergency stop protection device for a PVC mixing mill, comprising a base 1, with pillars 2 fixedly mounted on the tops of both sides of the base 1, and the pillars 2 are columnar structures with a "U"-shaped cross section, and the main view of the baffle rod 3 is an inverted "U" shape, and a baffle rod 3 is mounted on the top of the pillar 2, and the two ends of the baffle rod 3 are plugged into the grooves of the pillar 2, and the rotating shaft 4 is movably connected to the pillar 2 and the baffle rod 3 in a through-connection manner, thereby realizing the rotation of the baffle rod 3. When the baffle rod 3 is subjected to a human collision, it will rotate and fall, thereby triggering the emergency stop protection.

[0023] A limiting device 5 for limiting the blocking rod 3 is also installed on the rotating shaft 4, and the limiting device 5 is tightened and fixed by a locking nut 6. The limiting device 5 includes a limiting rod 5.1, and connecting plates 5.2 are fixed at both ends of the limiting rod 5.1. Under the support of the connecting plate 5.2, the limiting rod 5.1 limits the blocking rod 3 to prevent the blocking rod 3 from falling in the opposite direction. The other end of the connecting plate 5.2 is sleeved and installed on the rotating shaft 4, realizing the rotation of the connecting plate 5.2. The limiting angle can be adjusted by rotating the connecting plate 5.2 to meet different usage requirements, and the connecting plate 5.2 is tightened and fixed by the locking nut 6.

[0024] Furthermore, a support plate 5.3 is installed between the two connecting plates 5.2, one end of the support plate 5.3 is movably connected to the connecting plate 5.2, and a plurality of evenly distributed limit plates 5.4 are fixedly provided on the outer wall on the back side of the groove of the pillar 2, and the other end of the support plate 5.3 abuts against the limit plate 5.4, thereby supporting the limit rod 5.1 and improving the firmness and stability during the limit.

[0025] In order to achieve emergency stop protection, a sensor bracket 7 is fixedly installed on the outer wall of the top of the pillar 2, and an infrared sensor 8 is fixedly installed on the end of the sensor bracket 7. The infrared sensor 8 is electrically connected to the controller 9 of the mixing mill. When the baffle 3 is hit by a human collision, it will rotate and fall, and the infrared sensor 8 is used to sense the falling process. When the infrared sensor 8 detects that the baffle 3 falls, it will transmit an electrical signal to the controller 9, and the controller 9 will control the mixing mill to stop running, avoiding people being drawn into the equipment, greatly improving the safety of the mixing mill during operation, and the detection structure and principle of the infrared sensor 8 and the control principle of the controller 9 are existing technologies.

[0026] A supporting device 10 for supporting the barrier rod 3 is also installed on the pillar 2. A slide groove 11 is provided on the outer walls on both sides of the pillar 2, and the supporting device 10 is movably connected to the slide groove 11. The supporting device 10 includes a support plate 10.1, which is installed in the groove of the pillar 2. When the barrier rod 3 falls, the support plate 10.1 plays a role of limiting and supporting the barrier rod 3, preventing the barrier rod 3 from continuing to fall, and making the barrier rod 3 play a blocking role to prevent people from continuing to approach.

[0027] Furthermore, a slide bar 10.2 is installed at each end of the support plate 10.1, and the two ends of the slide bar 10.2 pass through the slide groove 11 and are slidably connected thereto. A bottom rod 10.3 is also installed at the bottom of the slide groove 11, and a guide column 10.4 is installed at both ends of the slide bar 10.2. The guide column 10.4 is connected to the slide bar 10.2 and the bottom rod 10.3, and the two ends of the guide column 10.4 are limited by nuts. A spring 10.5 is sleeved on the guide column 10.4, and the two ends of the spring 10.5 are respectively in contact with the slide bar 10.2 and the bottom rod 10.3. The spring 10.5 plays a buffering role in the support of the support plate 10.1.

[0028] The utility model relates to an emergency stop protection device for a PVC mixing mill. The working principle of the device is as follows: the device is placed in front of the mixing mill. When the mixing mill is running, when a person approaches the mixing mill and collides with the barrier rod 3, the barrier rod 3 rotates and falls under the action of the collision. When the infrared sensor 8 detects that the barrier rod 3 has fallen, the electric signal is transmitted to the controller 9, and the controller 9 controls the mixing mill to stop running, so as to avoid that the person is drawn into the equipment. The support plate 10.1 is used to support the falling barrier rod 3 to prevent the barrier rod 3 from continuing to fall, and to make the barrier rod 3 horizontal in front of the mixing mill to play a blocking role and prevent the person from continuing to approach.

[0029] In addition: It should be noted that the above specific implementation is only an optimization scheme of this patent. Any changes or improvements made by technicians in this field based on the above concept are within the scope of protection of this patent.

Claims

1. A PVC mixing mill emergency stop protection device, characterized by: The invention comprises a base (1), pillars (2) are fixedly installed on the top of both sides of the base (1), a blocking rod (3) is installed on the top of the pillar (2), and the two ends of the blocking rod (3) are movably connected to the pillar (2) through a rotating shaft (4), a limiting device (5) for limiting the blocking rod (3) is also installed on the rotating shaft (4), and the limiting device (5) is tightened and fixed by a locking nut (6), a sensor bracket (7) is also fixed on the outer wall of the top of the pillar (2), an infrared sensor (8) is fixedly installed on the end of the sensor bracket (7), and the infrared sensor (8) is electrically connected to the controller (9), and a supporting device (10) for supporting the blocking rod (3) is also installed on the pillar (2).

2. A PVC mixing mill emergency stop protection device according to claim 1, characterized in that: The support (2) is a columnar structure with a "U"-shaped cross section, the blocking rod (3) is in an inverted "U" shape in a main view, and both ends of the blocking rod (3) are plugged into the grooves of the support (2), and the rotating shaft (4) is movably connected to the support (2) and the blocking rod (3) in a through-hole manner.

3. A PVC mixing mill emergency stop protection device according to claim 2, characterized in that: The limiting device (5) comprises a limiting rod (5.1), connecting plates (5.2) are fixedly provided at both ends of the limiting rod (5.1), and the other end of the connecting plate (5.2) is sleeved and installed on the rotating shaft (4), and the connecting plate (5.2) is pressed and fixed by a locking nut (6), and a support plate (5.3) is also installed between the two connecting plates (5.2), one end of the support plate (5.3) is movably connected to the connecting plate (5.2), and a plurality of evenly distributed limiting plates (5.4) are fixedly provided on the outer wall of the back side of the groove of the pillar (2), and the other end of the support plate (5.3) is in contact with the limiting plate (5.4).

4. A PVC mixing mill emergency stop protection device according to claim 1, characterized in that: Slide grooves (11) are provided on the outer walls of both sides of the pillar (2), and the supporting device (10) is movably connected to the slide grooves (11).

5. A PVC mixing mill emergency stop protection device according to claim 4, characterized in that: The supporting device (10) includes a support plate (10.1), which is installed in the groove of the pillar (2), and a sliding rod (10.2) is respectively installed at both ends of the support plate (10.1), and the two ends of the sliding rod (10.2) pass through the sliding groove (11) and are slidably connected thereto, and a bottom rod (10.3) is also installed at the bottom of the sliding groove (11), and a guide column (10.4) is installed at both ends of the sliding rod (10.2), and the guide column (10.4) is connected to the sliding rod (10.2) and the bottom rod (10.3), and the two ends of the guide column (10.4) are limited by nuts, and a spring (10.5) is installed on the guide column (10.4), and the two ends of the spring (10.5) are respectively in contact with the sliding rod (10.2) and the bottom rod (10.3).

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