Natural rubber calender feed mechanism

Abstract

This invention discloses a feeding mechanism for a natural rubber pressing machine. By setting an auxiliary lifting device on the main lifting device, the main lifting device drives the auxiliary lifting device to move linearly up and down along the support. The auxiliary lifting device drives the clot hook to retract and lower, thereby feeding and pressing the rubber clot. This achieves a high degree of automation, eliminating the need for manual pushing of the clot, significantly reducing the labor intensity of feeding the pressing machine, improving feeding efficiency, effectively reducing labor costs, and ensuring the personal safety of workers. At the same time, by setting two sets of auxiliary lifting devices on the support, the main lifting motor drives the gear set to drive the main screw to rotate synchronously in opposite directions. This allows the auxiliary lifting devices on the two main screws to drive the clot hook to feed in an alternating and continuous manner, effectively improving the continuity of production, further increasing feeding efficiency, improving production efficiency, and reducing consumption.

Description

Technical Field

[0001] This invention relates to the field of feeding technology for thinning machines, and more specifically to a feeding mechanism for a natural rubber thinning machine. Background Technology

[0002] Currently, the pressing machines and pressing processes in the primary processing industry of natural rubber in China and major natural rubber producing countries in Southeast Asia have the following objective shortcomings.

[0003] (1) The thinning machine has a simple design and incomplete feeding and automatic safety protection mechanisms.

[0004] (2) Since there is no feeding machinery, the operators stand on the thinning machine, next to the thinning machine, or inside the solidification tank to feed the material by manually hooking and dragging the solidified blocks or by pushing the solidified blocks by hand. There is not much space to stand next to the thinning machine, the back wall of the solidification tank, or the partition. The surface of the solidification tank, the back wall of the solidification tank, and the partition is smooth, and it is easy to slip when wet, and it is easy to fall into the thinning machine with one's body, hands, or feet.

[0005] (3) Operators feed thick lumps by manually hooking and dragging them (the thickness of the lumps solidified in the deep tank is 40cm to 50cm) or by pushing the lumps by hand. This consumes a lot of physical energy and is easy to cause fatigue. In a state of fatigue, operators are prone to misoperation and production safety accidents.

[0006] (4) Although some thinning machines are equipped with feeding wire rope traction machines, they are inconvenient to operate and easy to disengage, which also poses the aforementioned dangers and brings the danger of "flying hook" after disengagement due to the elastic force of rubber.

[0007] (5) During the continuous pressing process of the thinning machine, due to the large thickness of the lumps (although they shrink during the ripening and pressing process, they still have about 90% of the volume when they are just solidified), the varying hardness and thickness, the lumps cannot enter the thinning machine smoothly. It is often necessary to manually pull and push the lumps, which consumes a lot of physical energy and makes it easy to fall. Summary of the Invention

[0008] The purpose of this invention is to address the shortcomings of the aforementioned technologies by proposing a feeding mechanism for a natural rubber thinning machine, which aims to solve the problems of low feeding efficiency and easy safety accidents in the aforementioned thinning machines.

[0009] This invention provides a feeding mechanism for a natural rubber thinning machine, including a base plate, a support, a support lifting device, a moving platform, a clumping hook, a main lifting device, and a secondary lifting device. The base plate is connected to the thinning machine, the support is rotatably connected to the base plate, the support lifting device is disposed on the base plate, and the output end of the support lifting device is hinged to the support. The main lifting device is disposed on the support, the moving platform is connected to the main lifting device, the secondary lifting device is hinged to the moving platform, and the clumping hook is hinged to the moving platform and the secondary lifting device.

[0010] Furthermore, the main lifting device includes a main lifting motor, a main screw, and a gear set. The main lifting motor is located at the end of the bracket, and the main screw is rotatably mounted on the bracket. The main screw is connected to the main lifting motor via the gear set. The moving platform is threadedly connected to the main screw.

[0011] Furthermore, the auxiliary lifting device includes an auxiliary lifting motor and an auxiliary screw. The auxiliary lifting motor is hinged to the moving platform via a base, and the auxiliary screw is connected to the output end of the auxiliary lifting motor for transmission. A slider is threaded onto the auxiliary screw, and the end of the clot hook is hinged to the slider.

[0012] Furthermore, the support lifting device is an electric push rod or a hydraulic push rod.

[0013] Furthermore, it also includes a rotating device, which includes a slewing bearing, a rotary motor, and a transmission gear. The slewing bearing and the transmission gear are mounted on the base plate, and the bracket is connected to the slewing bearing. The rotary motor is located at the end of the bracket and is connected to the transmission gear for transmission.

[0014] Furthermore, the auxiliary lifting device consists of two sets, and the main screw consists of two main screws, which are linked together by the gear set.

[0015] Furthermore, the main screw includes a first main screw and a second main screw, and the moving platform is threadedly connected to the first main screw and the second main screw at a front-to-back position respectively. The first main screw and the second main screw are driven to rotate synchronously in opposite directions by the gear set, so as to drive the moving platform on the first main screw and the second main screw to perform linear interlaced motion.

[0016] Furthermore, the gear set includes a driving bevel gear, a driven bevel gear, and a driven gear. The driven gear is connected to the ends of the first main screw and the second main screw, respectively. The driven bevel gear is connected to the end of the first main screw. The driving bevel gear is connected to the output end of the main lifting motor. The driving bevel gear and the driven bevel gear mesh and transmit power.

[0017] Furthermore, it also includes a slide bar, which is mounted on the bracket, and the mobile platform is slidably fitted onto the slide bar.

[0018] Furthermore, it also includes support feet, which are hinged to both sides of one end of the support.

[0019] Compared with existing technologies, it has the following beneficial effects:

[0020] 1. By setting an auxiliary lifting device on the main lifting device, the active lifting device drives the auxiliary lifting device to move linearly up and down along the support. The auxiliary lifting device drives the block hook to retract and lower, so as to feed and compress the rubber block. The automation level is high, eliminating the need for manual pushing of the block for feeding. This greatly reduces the labor intensity of feeding the compression machine, improves feeding efficiency, effectively reduces labor costs, and ensures the personal safety of the staff.

[0021] 2. By setting two sets of auxiliary lifting devices on the support, the main lifting motor drives the gear set to drive the main screw to rotate synchronously in opposite directions. This allows the auxiliary lifting devices on the two main screws to drive the clot hooks to feed continuously in an alternating manner, which effectively improves the continuity of production, further improves feeding efficiency, and also increases production efficiency and reduces consumption.

[0022] 3. By setting up a rotating device and a support lifting device, the horizontal and vertical angles of the support can be adjusted, thereby improving the flexibility of the support to match the feeding of rubber lumps floating in multiple coagulation tanks, and to coordinate with the movement and positioning of the thinning machine. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only preferred embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a front view of the feeding mechanism of a natural rubber thinning machine according to the present invention;

[0025] Figure 2 This is a schematic diagram of the feeding mechanism of a natural rubber thinning machine according to the present invention;

[0026] Figure 3 This is a top view of the feeding mechanism of a natural rubber thinning machine according to the present invention;

[0027] Figure 4 This is a schematic diagram of the working state of the clumping hook of the feeding mechanism of a natural rubber thinning machine according to the present invention;

[0028] Figure 5 This is a schematic diagram of the main lifting device and the auxiliary lifting device of the feeding mechanism of a natural rubber thinning machine according to the present invention;

[0029] Figure 6 This is a schematic diagram of the solidification tank and transition pool layout of the feeding mechanism of a natural rubber thinning machine according to the present invention;

[0030] Figure 7 This is a schematic diagram of embodiment 3 of the feeding mechanism of a natural rubber thinning machine according to the present invention.

[0031] In the diagram, 1-base plate; 2-support; 3-support lifting device; 4-moving platform; 5-block hook; 6-slide rod; 7-support foot; 8-support base; 9-rotating shaft; 10-thinning machine; 21-main lifting motor; 22-main screw; 23-gear set; 30-machine base; 31-auxiliary lifting motor; 32-auxiliary screw; 33-slider; 41-slewing bearing; 42-rotary motor; 43-transmission gear; 51-driving bevel gear; 52-driven bevel gear; 53-driven gear; 221-first main screw; 222-second main screw. Detailed Implementation

[0032] To better understand the structure, functional features, and advantages of the present invention, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings:

[0033] Example 1:

[0034] like Figures 1 to 7As shown, the present invention provides a feeding mechanism for a natural rubber pressing machine. The feeding mechanism includes a base plate 1, a support 2, a support lifting device 3, a moving platform 4, a clumping hook 5, a main lifting device, and an auxiliary lifting device. The base plate 1 of the feeding mechanism of the thinning machine 10 supports the entire mechanism and is fixed to the thinning machine 10 by screws through screw holes. The bracket 2 is rotatably connected to the base plate 1. The bracket 2 is a rectangular frame structure made of angle steel or other high-strength steel. Furthermore, the bracket 2 is connected to the bracket seat 8 through the rotating shaft 9. The bracket seat 8 is connected to the base plate 1 through bearings, which improves the adjustability and adaptability of the mechanism. One end of the bracket lifting device 3 is located on the base plate 1. The output end of the bracket lifting device 3 is hinged to the bracket 2. The lifting and lowering control of the bracket 2 is achieved by connecting the two ends of the bracket lifting device 3 to the bracket 2 and the base plate 1 respectively. The main lifting device is located on the bracket 2. The moving platform 4 is connected to the main lifting device to drive the moving platform 4 to move linearly along the bracket 2. The auxiliary lifting device is hinged to the moving platform 4. The clot hook 5 is hinged to the moving platform 4 and the auxiliary lifting device to control the movement and lifting of the clot hook 5 through the main lifting device and the auxiliary lifting device.

[0035] By setting an auxiliary lifting device on the main lifting device, the active lifting device drives the auxiliary lifting device to move linearly up and down along the support 2. The auxiliary lifting device drives the block hook 5 to retract and lower, so as to feed and compress the rubber block. The automation level is high, and there is no need for manual pushing of the block for feeding. This greatly reduces the labor intensity of feeding the compression machine 10, improves feeding efficiency, effectively reduces labor costs, and ensures the personal safety of the staff.

[0036] Specifically, the main lifting device includes a main lifting motor 21, a main screw 22, and a gear set 23. The main lifting motor 21 is located at the end of the support 2, and the main screw 22 is rotatably mounted on the support 2. The main screw 22 is connected to the main lifting motor 21 through the gear set 23. The moving platform 4 is threadedly connected to the main screw 22 through a connecting block, so that the main screw 22 rotates under the drive of the main lifting motor 21, thereby driving the moving platform 4 to perform linear motion on the main screw 22. The main lifting device is the main power mechanism of the feeding mechanism of the thinning machine 10, bearing the main feeding loads in the horizontal and vertical directions.

[0037] Specifically, the auxiliary lifting device includes an auxiliary lifting motor 31 and an auxiliary screw 32. The auxiliary lifting motor 31 is hinged to the moving platform 4 via a base 30, and the auxiliary screw 32 is connected to the output end of the auxiliary lifting motor 31 for transmission. A slider 33 is threaded onto the auxiliary screw 32, and the end of the gel hook 5 is hinged to the slider 33. The auxiliary lifting motor 31 drives the auxiliary screw 32 to rotate, thereby causing the slider 33 threaded onto the auxiliary screw 32 to move linearly along the axial direction of the auxiliary screw 32. When the slider 33 moves linearly on the auxiliary screw 32, it drives the entire auxiliary lifting device to rotate on the moving platform 4 via the hinged base, thereby raising and lowering the hook of the gel hook.

[0038] Specifically, in addition to using a motor to drive the screw rotation, the main lifting device and the auxiliary lifting device can also use other methods such as screw pulling, chain pulling, gear rotation, etc. to drive the mobile platform 4 to perform linear motion.

[0039] Specifically, the rotation of the main screw 22 of the mobile platform 4, combined with the auxiliary lifting device, effectively controls the lowering and unhooking of the clumping hook 5, and can adjust the feeding and conveying stroke according to different situations. When stopping, the mobile platform 4 stops close to the thinning machine 10, which can greatly reduce the torque required for the lifting and rotating of the support 2. The main screw 22 can effectively control the movement direction of the mobile platform 4 and the clumping hook 5, ensuring that the feeding direction is the same as or similar to the direction of the tension generated by the thinning machine 10 during thinning, and the combined force conveys the clumping to the thinning machine 10, ensuring the continuity of production.

[0040] Specifically, the support lifting device 3 is an electric push rod or a hydraulic push rod, which lifts one end of the support 2 by means of the extension and retraction of the electric push rod or hydraulic push rod hinged at both ends to the support 2 and the base plate 1, and makes the support 2 rotate around the support seat 8 to achieve the lifting and retraction of the other end of the support 2.

[0041] Specifically, the clot hook 5 has a V-shaped obtuse angle structure; the front and rear arms of the clot hook 5 are manufactured as a single piece, which can withstand sufficient load; the clot hook 5 is made of thick steel plate, has a long forearm, adopts double hooks, and the double hooks are connected by a cylinder; even when the hardness of the clots varies greatly, it is not easy for them to disengage or break, ensuring the continuity of production; the axes of the forearm and rear arm of the clot hook 5 are offset by 45°, and it can turn at a 90° angle under the linear movement of the auxiliary lifting device, which reasonably solves the problems of hooking down and disengaging; the long forearm of the clot hook 5 can reach deep into the bottom of the clot to prevent disengagement; by utilizing the characteristic that the static load of the screw lifting mechanism is greater than the rotational load, a lifting machine with smaller power and weight can be selected to reduce the overall weight of the mechanism.

[0042] Specifically, the two force-bearing ends of the main lifting device, auxiliary lifting device, support lifting device 3, and block hook 5 are all hinged by rotating shaft 9, ensuring the flexibility of hooking, pulling, and lifting rubber blocks and meeting the work requirements.

[0043] Specifically, the base plate 1 of the feeding mechanism of the thinning machine 10 is installed on the original thinning machine 10. It has a compact structure, occupies little space, has a large load capacity, and is widely applicable, so it can be promoted and applied quickly. At the same time, the feeding mechanism of the thinning machine 10 can work independently by installing a base and a walking mechanism.

[0044] Working principle of the feeding mechanism:

[0045] The feeding mechanism of the thinning machine 10 travels along the thinning machine 10 via the thinning machine 10 traveling wheels on the thinning machine 10 traveling track. When it reaches the predetermined solidification tank position, the support lifting device 3 is activated to retract, the front end of the support 2 descends, and one end of the support 2 is stuck on the solidification tank partition.

[0046] Start the thinning machine 10, and then start the feeding mechanism of the thinning machine 10.

[0047] The mobile platform 4 moves forward under the push of the main lifting device. After reaching or approaching the front plate of the support 2, the main lifting device stops rising using its own self-locking device. Previously, the forearm of the clot hook 5 was in a position parallel to the support 2.

[0048] The auxiliary lifting device rises, pushing the rear arm of the block hook 5 to rotate 90° around the front arm axis of the block hook 5. The auxiliary lifting device stops rising using its own self-locking device, and the front arm of the block hook 5 rotates 90° downwards to hook into the block.

[0049] The main lifting device descends, and the mobile platform 4 and support 2 move toward the thinning machine 10, driving the clumping hook 5 to pull the clumping upwards and toward the thinning machine 10, and send it into the space between the front rollers of the thinning machine 10 for thinning.

[0050] After the mobile platform 4 and the clot hook 5 reach or approach the thinning machine 10, the main lifting device stops descending using its own self-locking device.

[0051] The auxiliary lifting device descends, and the lumpy hook 5 rotates 90° to be parallel to the support 2.

[0052] Repeat the above steps to achieve continuous feeding of the agglomerates and continuous pulling of the agglomerates to the thinning machine 10. Start the extension of the support lifting device 3, lift the support 2, and one end of the support 2 leaves the solidification tank partition. The feeding mechanism of the thinning machine 10 moves with the thinning machine 10 to the position of the next solidification tank and thins the agglomerates in another solidification tank.

[0053] Example 2:

[0054] like Figures 1 to 4As shown, in conjunction with the technical solution of Embodiment 1, this embodiment also includes a rotating device, which includes a rotary bearing 41, a rotary motor 42, and a transmission gear 43. The rotary bearing 41 and the transmission gear 43 are mounted on the base plate 1, and the bracket 2 is connected to the rotary bearing 41. The rotary motor 42 is mounted at the end of the bracket 2, and the rotary motor 42 is connected to the transmission gear 43 for transmission.

[0055] When the thinning machine 10 needs to move to another workshop for operation, the rotating device is activated so that the longitudinal direction of the support 2 is parallel to the travel track of the thinning machine 10, and they move together to the next workshop.

[0056] By setting up a rotating device and a support lifting device 3, the horizontal and vertical angles of the support 2 can be adjusted, thereby improving the flexibility of the support 2 to match the feeding of rubber lumps floating in multiple coagulation tanks, and to coordinate with the movement and positioning of the thinning machine.

[0057] Example 3:

[0058] like Figure 7 As shown, in conjunction with the technical solution of Embodiment 2, in this embodiment, there are two sets of auxiliary lifting devices and two main screws 22, which are linked together by a gear set 23.

[0059] By setting two sets of auxiliary lifting devices on the support 2, the main lifting motor 21 drives the gear set 23 to drive the main screw 22 to rotate synchronously in opposite directions. This allows the auxiliary lifting devices on the two main screws 22 to drive the clot hooks 5 to feed in an alternating and continuous manner, which effectively improves the continuity of production, further improves the feeding efficiency, and also improves the production efficiency and reduces consumption.

[0060] Specifically, the main screw 22 includes a first main screw 221 and a second main screw 222. The first main screw 221 and the second main screw 222 are respectively threaded with moving platforms 4 at front and rear positions. The first main screw 221 and the second main screw 222 are driven to rotate synchronously in opposite directions by a gear set 23, so as to drive the moving platforms 4 on the first main screw 221 and the second main screw 222 to perform linear interlacing motion, so that the clot hooks 5 hinged to them can perform linear interlacing motion, thereby realizing uninterrupted feeding of rubber clots and greatly improving the feeding efficiency of the feeding mechanism.

[0061] Specifically, the gear set 23 includes a driving bevel gear 51, a driven bevel gear 52, and a driven gear 53. The driven gear 53 is connected to the ends of the first main screw 221 and the second main screw 222, respectively. The driven bevel gear 52 is connected to the end of the first main screw 221. The driving bevel gear 51 is connected to the output end of the main lifting motor 21. The driving bevel gear 51 and the driven bevel gear 52 mesh and drive each other to rotate, thereby driving the first main screw 221 to rotate. The driven gear 53 meshes with the second main screw 222 on the first main screw 221 to rotate synchronously in opposite directions, thereby enabling the moving platform 4 on the first main screw 221 and the second main screw 222 to perform linear interlacing motion.

[0062] Example 4:

[0063] like Figures 1 to 4 As shown, in conjunction with the technical solution of Embodiment 3, this embodiment also includes a slide rod 6, which is mounted on the bracket 2. The moving platform 4 is slidably sleeved on the slide rod 6 so as to limit and support the moving platform 4 through the slide rod 6, so as to prevent the moving platform 4 from rotating during the rotation of the main screw 22, thereby effectively ensuring the linear motion of the moving platform 4.

[0064] Specifically, it also includes support feet 7, which are hinged to both sides of one end of the support 2. The support feet 7 are used to lock one end of the support 2 onto the solidification tank partition, thereby increasing the support strength of the other end of the support 2 and significantly reducing the stress on the support 2, the lifting device 3 and the hinge stress on the rotating shaft 9.

[0065] Specifically, the main lifting motor 21, the auxiliary lifting motor 31, and the rotary motor 42 may be driven entirely or partially, or in combination, by electric, hydraulic, or pneumatic drives.

[0066] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of the present invention without departing from the scope of the present invention are within the protection scope of the present invention.

Claims

1. A natural rubber calender feed mechanism characterized by, The system includes a base plate (1), a support (2), a support lifting device (3), a moving platform (4), a clot hook (5), a main lifting device, and a secondary lifting device. The base plate (1) is connected to a thinning machine (10). The support (2) is rotatably connected to the base plate (1). The support lifting device (3) is located on the base plate (1), and the output end of the support lifting device (3) is hinged to the support (2). The main lifting device is located on the support (2). The moving platform (4) is connected to the main lifting device. The secondary lifting device is hinged to the moving platform (4). The clot hook (5) is hinged to the moving platform (4) and the secondary lifting device. The main lifting device includes a main lifting motor (21), a main screw (22), and a gear set (23). The main lifting motor (21) is located at the end of the bracket (2). The main screw (22) is rotatably mounted on the bracket (2). The main screw (22) is connected to the main lifting motor (21) through the gear set (23). The moving platform (4) is threadedly connected to the main screw (22). The auxiliary lifting device includes an auxiliary lifting motor (31) and an auxiliary screw (32). The auxiliary lifting motor (31) is hinged to the moving platform (4) via a base (30). The auxiliary screw (32) is connected to the output end of the auxiliary lifting motor (31) for transmission. A slider (33) is threaded onto the auxiliary screw (32). The end of the block hook (5) is hinged to the slider (33). The main screw (22) includes a first main screw (221) and a second main screw (222). The first main screw (221) and the second main screw (222) are threaded to the moving platform (4) at a front-to-back position. The first main screw (221) and the second main screw (222) are driven to rotate synchronously in opposite directions by the gear set (23) to drive the moving platform (4) on the first main screw (221) and the second main screw (222) to perform linear interlaced motion. The support lifting device (3) is an electric push rod or a hydraulic push rod; It also includes a rotating device, which includes a slewing bearing (41), a rotary motor (42), and a transmission gear (43). The slewing bearing (41) and the transmission gear (43) are mounted on the base plate (1), and the bracket (2) is connected to the slewing bearing (41). The rotary motor (42) is located at the end of the bracket (2), and the rotary motor (42) is connected to the transmission gear (43) for transmission.

2. The feeding mechanism of the natural rubber thinning machine according to claim 1, characterized in that, The auxiliary lifting device consists of two sets, and the main screw (22) consists of two rods. The two main screws (22) are linked together through the gear set (23).

3. The feeding mechanism of the natural rubber thinning machine according to claim 2, characterized in that, The gear set (23) includes a driving bevel gear (51), a driven bevel gear (52), and a driven gear (53). The driven gear (53) is connected to the ends of the first main screw (221) and the second main screw (222), respectively. The driven bevel gear (52) is connected to the end of the first main screw (221). The driving bevel gear (51) is connected to the output end of the main lifting motor (21). The driving bevel gear (51) and the driven bevel gear (52) mesh and drive each other.

4. The feeding mechanism of the natural rubber thinning machine according to any one of claims 1 to 3, characterized in that, It also includes a slide bar (6), which is mounted on the bracket (2), and the moving platform (4) is slidably mounted on the slide bar (6).

5. The feeding mechanism of the natural rubber thinning machine according to claim 1, characterized in that, It also includes a support foot (7), which is hinged to both sides of one end of the support (2).

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