Discharge door structure for internal mixer production line

Abstract

The utility model discloses a discharge door structure for an internal mixer production line, which comprises an internal mixer discharge port, a wheel rolling machine feed port and a rack, a cabin door device is mounted in the rack, the internal mixer discharge port is arranged above the cabin door device, and the wheel rolling machine feed port is arranged below the cabin door device; the cabin door device comprises a discharging door, a driving assembly, a sliding cabin door and a crank connecting rod assembly, the discharging door is rotationally installed on the inner wall of the rack, the driving end of the driving assembly is connected with the discharging door, the sliding cabin door is located above a feeding port of the wheel rolling machine, and the crank connecting rod assembly is connected with the discharging door and the sliding cabin door. When the discharging door is closed, the crank connecting rod assembly drives the sliding cabin door to synchronously close the feeding port, synchronism and coordination of the discharging process and the feeding process are guaranteed, the problem of material leakage or blockage caused by asynchronous actions of the discharging process and the feeding process is solved, the operation stability and reliability of equipment are remarkably improved, and the problems that a feeding port of a traditional wheel rolling machine is normally open and cannot be closed are solved. And the problem that materials are polluted is solved.

Description

Technical Field

[0001] This utility model relates to the field of internal mixer technology, specifically a discharge gate structure for an internal mixer production line. Background Technology

[0002] In traditional industrial production processes, internal mixers and rolling mills are often used together in material processing production lines. Specifically, the discharge port of the internal mixer is positioned opposite the feed port of the rolling mill. The discharge port of the internal mixer is equipped with a discharge gate, which is opened and closed by rotating to control the discharge of material from the internal mixer. Since the feed port of the rolling mill needs to continuously receive material from the internal mixer during production, it is usually designed to be open to allow material to flow smoothly into the rolling mill for subsequent processing. However, this open design makes the feed port of the rolling mill an unprotected passage, allowing dust, particulate matter, and other impurities from the external environment to easily enter the rolling mill.

[0003] Once dust, powder, and other impurities enter the rolling mill, they mix with the material, severely impacting product quality. On one hand, the presence of impurities can lead to appearance quality issues such as crystal impurities, black spots, bubbles, and perforations, as well as affecting uniformity and causing a decline in product performance. On the other hand, impurities can also cause wear and corrosion to the internal structure of the rolling mill, shortening the equipment's service life and increasing maintenance costs. Utility Model Content

[0004] To address the aforementioned shortcomings, this utility model proposes a discharge gate structure for a mixing mill production line. When the discharge gate is closed, the crank connecting rod assembly drives the sliding door to simultaneously close the feed inlet, effectively ensuring the synchronicity and coordination of the discharge and feed processes. This not only avoids material leakage or blockage caused by asynchronous actions of the two processes, but also significantly improves the operational stability and reliability of the equipment. Furthermore, it solves the problem of material contamination caused by the normally open feed inlet of traditional rolling mills.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A discharge gate structure for an internal mixer production line includes an internal mixer discharge port, a rolling mill inlet, and a frame. The internal mixer discharge port and the rolling mill inlet are both vertically arranged inside the frame. A hatch device is installed inside the frame. The internal mixer discharge port is located above the hatch device, and the rolling mill inlet is located below the hatch device.

[0007] The door device includes a discharge door, a drive assembly, a sliding door, and a crank-connecting rod assembly. The discharge door is rotatably mounted on the inner wall of the frame, with its mounting end positioned near the front opening of the frame. The drive end of the drive assembly is connected to the discharge door, and the drive assembly is used to drive the discharge door to rotate and open or close the internal mixer discharge port. The sliding door is horizontally positioned on the frame and located above the mill feed port. The sliding door slides in the front-rear direction of the frame. When the sliding door opens the mill feed port, it extends through the front opening of the frame. The crank-connecting rod assembly connects the discharge door and the sliding door, and the crank-connecting rod assembly is used to drive the sliding door to slide open or close the mill feed port.

[0008] The drive assembly is located near the front opening of the frame. The drive assembly includes a rotating shaft, a first sprocket, a second sprocket, a chain, and a power component. The rotating shaft is rotatably mounted on the side wall of the frame and horizontally passes through the left and right ends of the frame. The mounting end of the discharge gate is fixedly sleeved on the rotating shaft, and the discharge gate rotates axially.

[0009] The rotating shaft passes through the left and right ends of the frame and is fixedly fitted with first sprockets. Power components are installed at both ends of the frame. The output end of the power component is fixedly fitted with a second sprocket. The chain meshes with the first sprocket and the second sprocket respectively. The chain is fitted on the first sprocket and the second sprocket.

[0010] The frame is provided with slide rails on both the left and right sides, and the length direction of the slide rails is the front-to-back direction. The left and right sides of the sliding door are slidably connected to the slide rails respectively.

[0011] The crank-connecting rod assembly includes a crank-connecting rod, the first end of which is hinged to the discharge gate, and the last end of which is hinged to the sliding door.

[0012] The rear side wall of the frame is provided with a locking component and a sensing device. The locking end of the locking component extends movably into the inner wall of the discharge gate. The locking component is used to lock the discharge gate in a closed discharge port state.

[0013] The sensing device is used to sense whether the locking component is in a locked state.

[0014] The locking assembly includes a drive member and a bolt. The bolt is located inside the frame and slides in the front-rear direction of the frame. The drive end of the drive member is connected to the bolt. The front end of the bolt is provided with multiple locking blocks, which are arranged side by side.

[0015] The end of the discharge gate away from the rotating shaft is provided with a plurality of locking grooves. The locking grooves are arranged opposite to the locking blocks and correspond one-to-one. The locking blocks extend movably into the locking grooves.

[0016] The sensing device includes a first sensing trigger rod, a second sensing trigger rod, a first limit switch, and a second limit switch;

[0017] The first sensing trigger rod is horizontally mounted at the rear end of the plug. A trigger block is provided on the first sensing trigger rod. The length direction of the first sensing trigger rod is the front-to-back direction. The first limit switch is mounted on the frame and is arranged opposite to the first sensing trigger rod. The first limit switch is provided with a front detection point and a rear detection point from front to back. The trigger block is located between the front detection point and the rear detection point. The trigger block moves to abut against the front detection point or the rear detection point. Both the front detection point and the rear detection point are used to stop the plug insertion and removal activities.

[0018] A second inductive trigger rod is provided at one end of the rotating shaft that extends out of the first sprocket. The second limit switch is installed on the frame and is arranged opposite to the rotating shaft. The end of the second limit switch is provided with a locking detection point and an unlocking detection point from top to bottom. The second inductive trigger rod is located between the locking detection point and the unlocking detection point. The second inductive trigger rod moves against the locking detection point or the unlocking detection point. The locking detection point is used to identify that the discharge gate is closed and the internal mixer discharge port is opened.

[0019] The first limit switch is electrically connected to the control module, the second limit switch is electrically connected to the control module, and the control module is electrically connected to the drive component. The first limit switch is used to limit the driving range of the drive component; the second limit switch is used to limit the rotation range of the rotating shaft.

[0020] The top of the plug is provided with a dovetail groove, and the rear end of the frame is provided with a dovetail slider. The dovetail slider and the dovetail groove are arranged opposite to each other and are engaged with each other. The length direction of both the dovetail groove and the dovetail slider is the front-to-back direction.

[0021] The technical solution of this utility model can include the following beneficial effects:

[0022] 1. When the discharge gate is closed, the crank connecting rod assembly drives the sliding door to close the feed inlet synchronously, effectively ensuring the synchronization and coordination of the discharge and feed processes. This not only avoids material leakage or blockage caused by asynchronous actions of the two, but also significantly improves the operational stability and reliability of the equipment. It also solves the problem of material contamination caused by the normally open feed inlet setting of traditional rolling mill feed inlets.

[0023] 2. Because the discharge gate is located near the front opening of the frame, when the discharge gate rotates and opens the discharge port of the internal mixer under the drive of the drive assembly, and the discharge gate and the sliding door are set perpendicular to each other, the discharge gate covers the lateral space of the front opening of the frame, thereby preventing dust from outside the frame from entering the front opening of the frame. At this time, the dust generated during the unloading process inside the frame is blocked by the discharge gate and falls back into the discharge port of the internal mixer along the surface of the discharge gate, reducing the diffusion path to the front opening of the frame and reducing the risk of dust leakage. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the discharge gate structure of one embodiment of this utility model;

[0025] Figure 2 This is a cross-sectional view of the discharge gate structure according to one embodiment of this utility model. Figure 1 ;

[0026] Figure 3 This is a cross-sectional view of the discharge gate structure according to one embodiment of this utility model. Figure 2 ;

[0027] Figure 4 yes Figure 1 Enlarged view of point A in the middle;

[0028] Figure 5 yes Figure 3 Enlarged view of point B in the middle;

[0029] Figure 6 yes Figure 3 Enlarged view of point C in the middle;

[0030] Figure 7 This is a schematic diagram of a discharge gate, a rotating shaft, and a second induction trigger rod according to one embodiment of the present invention;

[0031] Among them, 1. Internal mixer discharge port; 2. Rolling mill feed port; 3. Frame; 31. Dovetail slide block; 4. Door device; 41. Discharge door; 42. Drive assembly; 421. Rotating shaft; 422. First sprocket; 423. Chain; 424. Power component; 43. Sliding door; 431. Slide rail; 44. Crank connecting rod assembly; 5. Locking assembly; 51. Drive component; 52. Bolt; 53. Locking block; 54. Locking groove; 6. Sensing device; 61. First sensing trigger rod; 62. First limit switch; 63. Trigger block; 64. Front detection point; 65. Rear detection point; 66. Second sensing trigger rod; 67. Second limit switch; 68. Unlock detection point; 69. Lock detection point. Detailed Implementation

[0032] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] In the description of this utility model, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "assembly," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The following is combined Figures 1 to 5 This describes a discharge gate structure for a mixing mill production line according to an embodiment of the present invention.

[0037] A discharge gate structure for an internal mixer production line includes an internal mixer discharge port 1, a rolling mill inlet 2, and a frame 3. The internal mixer discharge port 1 and the rolling mill inlet 2 are both vertically arranged inside the frame 3. A hatch device 4 is installed inside the frame 3. The hatch device 4 horizontally separates the top and bottom of the frame 3. The internal mixer discharge port 1 is located above the hatch device 4, and the rolling mill inlet 2 is located below the discharge gate 41.

[0038] The door device 4 includes a discharge door 41, a drive assembly 42, a sliding door 43, and a crank-connecting rod assembly 44. The discharge door 41 is rotatably mounted on the inner wall of the frame 3, with its mounting end positioned near the front opening of the frame 3. The drive end of the drive assembly 42 is connected to the discharge door 41, and the drive assembly 42 is used to drive the discharge door 41 to rotate and open or close the internal mixer discharge port 1. The sliding door 43 is horizontally positioned on the frame 3 and can slide in the front-rear direction of the frame 3. When the sliding door 43 opens the mill feed port, the sliding door 43 extends through the front opening of the frame 3. The crank-connecting rod assembly 44 rotatably connects the discharge door 41 and the sliding door 43, and the crank-connecting rod assembly 44 is used to drive the sliding door 43 to slide open or close the mill feed port 2.

[0039] Both the internal mixer discharge port 1 and the rolling mill feed port 2 are vertically installed inside the frame 3. This effectively prevents external dust from entering the material transport channel through the left, right, and rear side walls of the frame 3, significantly reducing the risk of material contamination due to dust intrusion. The hatch device 4 horizontally divides the internal space of the frame 3, making full use of its three-dimensional space and significantly reducing the floor space required for the production line.

[0040] Because the discharge gate 41 is located near the front opening of the frame 3, when the discharge gate 41 is driven by the drive assembly 42 to open the internal mixer discharge port 1, and the discharge gate 41 and the sliding door 43 are perpendicular to each other, the discharge gate 41 covers the lateral space of the front opening of the frame 3, thereby preventing dust from outside the frame 3 from entering the front opening of the frame 3. At this time, the dust generated during the unloading process inside the frame 3 is blocked by the discharge gate 41 and falls back into the internal mixer discharge port 1 along the surface of the discharge gate 41, reducing the diffusion path to the front opening of the frame 3 and reducing the risk of dust leakage.

[0041] Meanwhile, the sliding door 43 is linked to the discharge door 41 via the crank-connecting rod assembly 44. When the discharge door 41 is opened, it automatically slides open the mill feed inlet 2, creating a continuous material flow channel between the discharge inlet and the feed inlet. This linkage mechanism not only improves discharge efficiency but also ensures precise matching of the feed amount, reduces the need for manual intervention, and significantly improves overall production efficiency.

[0042] When the discharge gate 41 is closed, the crank connecting rod assembly 44 drives the sliding door 43 to close the feed inlet simultaneously, effectively ensuring the synchronicity and coordination of the discharge and feed processes. This not only avoids material leakage or blockage caused by asynchronous actions of the two, but also significantly improves the operational stability and reliability of the equipment. Furthermore, it solves the problem of material contamination caused by the normally open feed inlet setting of traditional rolling mills.

[0043] The drive assembly 42 is located near the front opening of the frame 3. The drive assembly 42 includes a rotating shaft 421, a first sprocket 422, a second sprocket, a chain 423, and a power component 424. The rotating shaft 421 is rotatably mounted on the side wall of the frame 3 and horizontally passes through the left and right ends of the frame 3. The mounting end of the discharge gate 41 is fixedly sleeved on the rotating shaft 421, and the discharge gate 41 rotates axially.

[0044] The rotating shaft 421 extends through the left and right ends of the frame 3 and is fixedly fitted with first sprockets 422. The left and right ends of the frame 3 are equipped with power components 424. The output end of the power component 424 is fixedly fitted with a second sprocket. The chain 423 meshes with the first sprocket 422 and the second sprocket respectively. The chain 423 is fitted on the first sprocket 422 and the second sprocket.

[0045] The rotating shaft 421 runs horizontally through both ends of the frame 3, ensuring that the discharge gate 41 has two states when it rotates axially: parallel or perpendicular to the sliding door 43.

[0046] Both ends of the rotating shaft 421 are equipped with a first sprocket 422, a second sprocket, a power component 424, and a chain 423. The power components 424 at both ends are activated simultaneously, driving the second sprocket to rotate. The second sprocket, in turn, drives the chain 423 and the first sprocket 422 to rotate, thus ensuring that both ends of the rotating shaft 421 rotate at the same speed and in the same direction. This ensures uniform force distribution on both ends of the rotating shaft 421 and the discharge gate 41, effectively avoiding uneven load problems caused by single-end drive, extending the service life of the equipment, and reducing the risk of failure due to concentrated mechanical stress.

[0047] It is worth noting that in this solution, the power component 424 is a torque motor. The first sprocket 422 and the second sprocket are tightly meshed through the chain 423 to form a stable power transmission link, which avoids the situation where the oil cylinder leaks oil and contaminates the material when the traditional discharge gate 41 is driven by the oil cylinder.

[0048] The frame 3 is provided with slide rails 431 on both the left and right sides. The length direction of the slide rails 431 is the front-to-back direction. The left and right sides of the sliding door 43 are slidably connected to the slide rails 431 respectively.

[0049] The crank-connecting rod assembly 44 includes a crank-connecting rod, the first end of which is hinged to the discharge gate 41, and the end of which is hinged to the sliding door 43.

[0050] The frame 3 is equipped with front-to-back sliding rails 431 on both the left and right sides, which provide a linear guide path for the sliding door 43, ensuring that the sliding door 43 always moves in the preset front-to-back direction during opening or closing, effectively reducing the risk of the sliding door 43 deviating or getting stuck, and extending the service life of the sliding door 43.

[0051] The axial rotation of the discharge gate 41 is converted into linear motion in the front-back direction of the sliding door 43, ensuring that when the discharge gate 41 is opened, the sliding door 43 slides backward synchronously to expand the discharge port, and vice versa, the discharge port is closed to avoid dust contamination of materials, thus achieving efficient linkage under complex working conditions.

[0052] The rear side wall of the frame 3 is provided with a locking component 5 and a sensing device 6. The locking end of the locking component 5 extends movably into the inner wall of the discharge gate 41. The locking component 5 is used to lock the discharge gate 41 in the closed discharge port state.

[0053] The sensing device 6 is used to sense whether the locking component 5 is in a locked state.

[0054] When the discharge gate 41 closes the discharge port, the plane of the discharge gate 41 is parallel to the sliding door 43. At this time, the locking end of the locking component 5 can be inserted into the inner wall of the discharge gate 41 through the mechanical structure to form a physical lock, and the discharge gate 41 is locked, effectively preventing the power component 424 from malfunctioning due to current fluctuations.

[0055] Since the feeding components are located inside the frame 3, workers cannot visually determine whether the discharge gate 41 is locked. Therefore, this embodiment includes a sensing device 6, which is linked to the locking component 5 to provide real-time feedback on the locking status, thus preventing safety accidents caused by human negligence.

[0056] The locking component 5 includes a driving member 51 and a bolt 52. The bolt 52 is slidably connected to the inner wall of the frame 3 in the front-back direction. The driving end of the driving member 51 is connected to the bolt 52. The front end of the bolt 52 is provided with a plurality of locking blocks 53, and the plurality of locking blocks 53 are arranged side by side.

[0057] The end of the discharge gate 41 away from the rotating shaft 421 is provided with a plurality of locking grooves 54. The locking grooves 54 are arranged opposite to the locking blocks 53 and correspond one-to-one. The locking blocks 53 extend into the locking grooves 54.

[0058] In this embodiment, the drive component 51 is an electric push rod, which can further avoid the situation where material contamination occurs due to oil leakage from traditional hydraulic cylinders. Activating the drive component 51 causes the bolt 52 to move forward, ensuring that the multiple locking blocks 53 on the bolt 52 extend into their corresponding locking slots 54, thereby forming a multi-point mechanical lock. Compared to single-point locking, the multi-point mechanical locking method effectively disperses the stress borne by the discharge gate 41, improves the discharge gate 41's impact and vibration resistance during equipment operation, and reduces the risk of deformation or loosening of the discharge gate 41.

[0059] In addition, the bolt 52 is slidably connected to the inner wall of the frame 3 in the front-to-back direction, ensuring that the locking block 53 is accurately inserted into the locking groove 54 along a straight trajectory, avoiding jamming or wear caused by offset.

[0060] The sensing device includes a first sensing trigger rod 61, a second sensing trigger rod 66, a first limit switch 62, and a second limit switch 67;

[0061] The first sensing trigger rod 61 is horizontally mounted at the rear end of the plug 52. A trigger block 63 is provided on the first sensing trigger rod 61. The length direction of the first sensing trigger rod 61 is the front-to-back direction. The first limit switch 62 is mounted on the frame 3 and is arranged opposite to the first sensing trigger rod 61. The first limit switch 62 is provided with a front detection point 64 and a rear detection point 65. The trigger block 63 is located between the front detection point 64 and the rear detection point 65. The trigger block 63 movably abuts against the front detection point 64 or the rear detection point 65. Both the front detection point 64 and the rear detection point 65 are used to stop the plug 52 from being inserted or removed.

[0062] A second inductive trigger rod 66 is provided at one end of the rotating shaft 421 that extends out of the first sprocket 422. A second limit switch 67 is installed on the frame 3 and is arranged opposite to the rotating shaft 421. The end of the second limit switch 67 is provided with a locking detection point 69 and an unlocking detection point 68. The second inductive trigger rod 66 is located between the locking detection point 69 and the unlocking detection point 68. The second inductive trigger rod 66 movably abuts against the unlocking detection point 68 or the locking detection point 69. The unlocking detection point 68 is used to identify that the discharge gate 41 opens the internal mixer discharge port 1, and the locking detection point 69 is used to identify that the discharge gate 41 closes the internal mixer discharge port 1.

[0063] The first limit switch 62 is electrically connected to the control module, the second limit switch 67 is electrically connected to the control module, and the control module is electrically connected to the drive component 51. The first limit switch 62 is used to limit the driving range of the drive component; the second limit switch 67 is used to limit the rotation range of the rotating shaft 421.

[0064] It is worth noting that the position of the trigger block 63 can be adjusted by moving it back and forth on the trigger rod 61 according to the wear condition of the plug 52.

[0065] Drive assembly 5 drives the discharge gate 41 to close the internal mixer discharge port 1. When the second induction trigger rod 66 on the rotating shaft 421 presses against the locking detection point 69, the second limit switch 67 can immediately identify that the discharge gate 41 is completely closed to the internal mixer discharge port 1 and transmit the signal to the control module. The control module controls drive assembly 5 to stop operating to prevent the discharge gate 41 from colliding with the internal mixer discharge port 1, and starts drive assembly 51.

[0066] When the drive unit 51 pushes the plug 52 forward, the sensing trigger rod 61 moves forward synchronously and then abuts against the front detection point 64 on the first limit switch 62. At this time, the first limit switch 62 can accurately identify that the locking block 53 on the plug 52 is completely located in the locking groove 54, and the discharge gate 41 is in a fully locked state. At the same time, the first limit switch 62 sends a signal to the control module, and the control module stops the output end of the drive unit 51 from continuing to move forward, so as to avoid the plug 52 colliding with the discharge gate 41 and causing a malfunction.

[0067] Next, when the discharge port 1 of the internal mixer is opened, the control module starts the drive component 51 to drive the bolt 52 to move backward, and the sensing trigger rod 61 moves backward in sync, and then abuts against the rear detection point 65 on the first limit switch 62. At this time, the first limit switch 62 can accurately identify that the locking block 53 on the bolt 52 has completely left the locking groove 54, and the discharge gate 41 is in a fully unlocked state.

[0068] The first limit switch 62 transmits the signal to the control module, which then starts the drive assembly 5 to rotate the discharge gate 41, thereby opening the discharge port 1 of the internal mixer.

[0069] At this time, since the rotating shaft 421, the discharge gate 41, and the second induction trigger rod 66 are coaxially arranged, the rotating shaft 421, the discharge gate 41, and the second induction trigger rod 66 rotate in the same direction and at the same speed. Figures 1 to 3 as well as Figure 7 It can be observed that the second limit switch 67 and the second induction trigger rod 66 are both located on the left side of the frame. Therefore, when the discharge gate 41 is viewed from the left, the discharge gate 41 opens the discharge port 1 of the internal mixer, and the discharge gate 41, the rotating shaft 421 and the second induction trigger rod 66 rotate clockwise together; when the discharge gate 41 closes the discharge port 1 of the internal mixer, the discharge gate 41, the rotating shaft 421 and the second induction trigger rod 66 rotate counterclockwise together.

[0070] The rotating shaft 421 drives the second sensing trigger rod 66 to rotate, causing the second sensing trigger rod 66 to rotate clockwise and separate from the locking detection point 69, and abut against the unlocking detection point 68. The second limit switch 67 can immediately recognize that the discharge gate 41 is fully open.

[0071] Next, when the internal mixer discharge port 1 is closed, the rotating shaft 421 rotates counterclockwise, and the second sensor trigger rod 66 rotates, causing the second sensor trigger rod 66 to move away from the unlock detection point 68 and abut against the locking detection point 69. The second limit switch 67 can immediately recognize that the discharge gate 41 has completely closed the internal mixer discharge port 1, and transmits this signal to the control module. The control module stops starting the drive assembly 42 to prevent the discharge gate 41 from colliding with the internal mixer discharge port 1.

[0072] The top of the plug 52 is provided with a dovetail groove, and the rear end of the frame 3 is provided with a dovetail slider 31. The dovetail slider 31 and the dovetail groove are arranged opposite to each other and are engaged with each other. The length direction of both the dovetail groove and the dovetail slider 31 is the front-to-back direction.

[0073] In this embodiment, the length direction of the dovetail groove and the dovetail slider 31 is defined, which can further restrict the movement of the bolt 52 to the front and back directions, and prevent the bolt 52 from shifting position, which would lead to locking failure.

[0074] It is worth noting that both the dovetail groove and the dovetail slider 31 have a cross-section that is narrower at the top and wider at the bottom. This structure can restrict the position of the plug 52 in the vertical direction, preventing the plug 52 from separating from the frame 3 in the vertical direction. In addition, when the plug 52 receives a vertical impact force, the wedge-shaped inclined surface structure on the dovetail slider 31 and the dovetail groove can decompose the impact force into a horizontal separation, thereby suppressing the vertical jump of the plug 52.

[0075] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A kick door structure for an internal mixer line, characterized by, It includes an internal mixer discharge port, a rolling mill feed port, and a frame. The internal mixer discharge port and the rolling mill feed port are both vertically arranged inside the frame. A hatch device is installed inside the frame. The internal mixer discharge port is located above the hatch device, and the rolling mill feed port is located below the hatch device. The door device includes a discharge door, a drive assembly, a sliding door, and a crank-connecting rod assembly. The discharge door is rotatably mounted on the inner wall of the frame, with its mounting end positioned near the front opening of the frame. The drive end of the drive assembly is connected to the discharge door, and the drive assembly is used to drive the discharge door to rotate and open or close the internal mixer discharge port. The sliding door is horizontally positioned on the frame and located above the mill feed port. The sliding door slides in the front-rear direction of the frame. When the sliding door opens the mill feed port, it extends through the front opening of the frame. The crank-connecting rod assembly connects the discharge door and the sliding door, and the crank-connecting rod assembly is used to drive the sliding door to slide open or close the mill feed port.

2. A kick door structure for an internal mixer line according to claim 1, characterized in that, The drive assembly is located near the front opening of the frame. The drive assembly includes a rotating shaft, a first sprocket, a second sprocket, a chain, and a power component. The rotating shaft is rotatably mounted on the side wall of the frame and horizontally passes through the left and right ends of the frame. The mounting end of the discharge gate is fixedly sleeved on the rotating shaft, and the discharge gate rotates axially. The rotating shaft passes through the left and right ends of the frame and is fixedly fitted with first sprockets. Power components are installed at both ends of the frame. The output end of the power component is fixedly fitted with a second sprocket. The chain meshes with the first sprocket and the second sprocket respectively. The chain is fitted on the first sprocket and the second sprocket.

3. A kick door structure for an internal mixer line according to claim 1, characterized in that, The frame is provided with slide rails on both the left and right sides, and the length direction of the slide rails is the front-to-back direction. The left and right sides of the sliding door are slidably connected to the slide rails respectively. The crank-connecting rod assembly includes a crank-connecting rod, the first end of which is hinged to the discharge gate, and the last end of which is hinged to the sliding door.

4. A kick door structure for an internal mixer line according to claim 2, characterized in that The rear side wall of the frame is provided with a locking component and a sensing device. The locking end of the locking component extends movably into the inner wall of the discharge gate. The locking component is used to lock the discharge gate in a closed discharge port state. The sensing device is used to sense whether the locking component is in a locked state.

5. A kick door structure for an internal mixer line according to claim 4, characterized in that The locking assembly includes a drive member and a bolt. The bolt is located inside the frame and slides in the front-rear direction of the frame. The drive end of the drive member is connected to the bolt. The front end of the bolt is provided with multiple locking blocks, which are arranged side by side. The end of the discharge gate away from the rotating shaft is provided with a plurality of locking grooves. The locking grooves are arranged opposite to the locking blocks and correspond one-to-one. The locking blocks extend movably into the locking grooves.

6. A kick door structure for an internal mixer line according to claim 5, wherein The sensing device includes a first sensing trigger rod, a second sensing trigger rod, a first limit switch, and a second limit switch; The first sensing trigger rod is horizontally mounted at the rear end of the plug. A trigger block is provided on the first sensing trigger rod. The length direction of the first sensing trigger rod is the front-to-back direction. The first limit switch is mounted on the frame and is arranged opposite to the first sensing trigger rod. The first limit switch is provided with a front detection point and a rear detection point from front to back. The trigger block is located between the front detection point and the rear detection point. The trigger block moves to abut against the front detection point or the rear detection point. Both the front detection point and the rear detection point are used to stop the plug insertion and removal activities. A second inductive trigger rod is provided at one end of the rotating shaft that extends out of the first sprocket. The second limit switch is installed on the frame and is arranged opposite to the rotating shaft. The end of the second limit switch is provided with a locking detection point and an unlocking detection point from top to bottom. The second inductive trigger rod is located between the locking detection point and the unlocking detection point. The second inductive trigger rod moves against the locking detection point or the unlocking detection point. The locking detection point is used to identify that the discharge gate is closed and the internal mixer discharge port is opened. The first limit switch is electrically connected to the control module, the second limit switch is electrically connected to the control module, and the control module is electrically connected to the drive component. The first limit switch is used to limit the driving range of the drive component; the second limit switch is used to limit the rotation range of the rotating shaft.

7. A kick door structure for an internal mixer line according to claim 5, wherein The top of the plug is provided with a dovetail groove, and the rear end of the frame is provided with a dovetail slider. The dovetail slider and the dovetail groove are arranged opposite to each other and are engaged with each other. The length direction of both the dovetail groove and the dovetail slider is the front-to-back direction.

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